A Study of Building Obsolescence in Standard Design

A Study of Building Obsolescence in Standard Design Abstract Once the building is obsolete cause by the defect of varying physical deterioration an ageing of various component and building of various age. The primary objective of this dissertation is to find out life cycle of building element and obsolescence and the effect for the building obsolescence. The definition and differentiation between obsolescence and depreciation, as well as explanation for all different types of obsolescence are being identified on the early stage of the dissertation. A survey is then conducted, few case studies are being conducted to collect information from double storey terrace housing tenants in order to achieve the targeted objective. During the survey, some difficulties are being encountered, such as time constraint and restrict of the obsolescence building have been over cycle life 30 years olds. The findings of the dissertation show that part of the hypothesis, which was set at the early stage is wrong. Not all types of obsolescence will cause depreciation of rental in office building. Legal obsolescence will not cause the renewal building and effect the service life of the building. At the end of the dissertation, recommendation will be made base on the research throughout this dissertation. It should be noted that the results from this survey are not perfectly reliable. However, it is hope that it can be a guideline to those who wish to carry out comprehensive or further research on building obsolescence. A STUDY OF BUILDING OBSOLESCENCE IN STANDARD DESIGN TERRACE HOUSES IN PERAK Chapter 1 1.1 INTRODUCTION This chapter is the introduction of the dissertation. It will define the background of the study. Aim and objectives of the research will be listed to give a clear understanding on the purpose of this dissertation. Besides, hypothesis is also stated to tell the reader what are the key questions being examined. Scope of study will be deliberated in this chapter too. It is to discuss on the coverage of this research. Research methodology will also be covered in this chapter to describe the method used to achieve the aim and objectives, as well as the way used to produce this dissertation. Case study, interview and questionnaire will be the main methodology of this research. The last part of the chapter will be the research structure, where it shows the layout of the chapter of the dissertation. 1.2 RATIONALE The initial idea of this topic is developed during my visit to my aunts work place. Renovation of her office building is carried out at that moment. The reason for the renovation work, which she told me, was to make the building attractive again, so that, the look of the building would not be out of date. Therefore, it gave me an idea to do a research on building obsolescence. Discussion with my colleagues and supervisor was carried out to narrow down the scope of this topic. Besides, many reading and thinking were done to decide what emphasis of my research is to be. Finally, the narrowed topic was found. As I have found out, obsolescence has been a persistent problem affecting houses property in recent years. Due to the impact of obsolescence, many houses have been renewal and redeveloped after only 20 to 30 years life, long before reaching the end of their physical life. Many houses in the future are likely to enjoy even shorter useful lives as a result of increased rates of obsolescence. Obsolescence occurs due to physical deterioration, wear and tear, technological advances, changes in the economic conditions users requirements, design, appearance, taste, legal, and social needs. Once the building is obsolete cause by the defect of varying physical deterioration an ageing of various component and building of various age. The research is undertaken to find out life cycle of building element and obsolescence and the effect for the building obsolescence. Hence, my research will discuss this issue in greater depth and goes on to consider different types of obsolescence. By doing so, I wish that the results from this research will help me to understand the defect of component of material cause the obsolescence building. Such results may also help me in future to know on the prevent ways to treat the obsolescence in building. 1.3 AIM AND OBJECTIVE Aim To investigate varying physical deterioration an ageing of various component and building of varies age. Objective: 1. To investigate the life cycle of building element and obsolescence. 2. To investigate the effect for the building obsolescence. 3. To explain strategy for avoiding and minimizing the obsolescence in building. 1.4 PROBLEM STATEMENT Different project types have in themselves different project life cycle, which in turn influence the life expectancy of their various component. Different elements of building also have different stage obsolescence, Users or owners may change and have requirements different from those the element was initially intended to fulfill. Many of the technologies of modern facilities, as well as the activities they shelter and support to minimizing obsolescence, have changed substantially in recent decades and are continuing to change. 1.5 SCOPE OF STUDY The problem of obsolescence is hardly new so need find the board expertise and extensive experience to get the more information for this dissertation. We should be concerned that in an age of rapidly changing technology our buildings are apt to be obsolete. These building might have been built 35 years ago so we will investigate varying physical deterioration of ageing. These changes in technology are not only inevitable; in the long term they are desirable because the new systems and services offer enhanced performance to the facilities, users and owners. However, in the short term, obsolescence can be costly. Thoughtful design and management can defer or avoid obsolescence and thereby improve efficiency as well as effectiveness of our facilities, and that is the ultimate aim of this dissertation. 1.6 RESEARCH METHODOLOGY Various research studies relating to building obsolescence in standard design houses in Perak had been carried out in many ways:- Literature review Case Study and Questionnaires Interview 1.6.1 Literature review iterature research is very important to get the information in order to do the theoretical of this dissertation. Reading courses such as books, magazines, reference, articles, newspapers, journals and publication are some of very useful sources to get the data required for the dissertation. The sources can be reached by visiting the National Library, KTAR Library or bookshop in town. Internet advertising is very convenience to use especially for this dissertation, since it related to the internet itself and quite new. By logging onto the internet, website of the internet advertising of the property developer can visited and can get more ideal way of literature research sources. These normally gather from newspapers, journals and publications. Publication: 1. Revision Notes on Building Maintenance and Adaptation, Butterworth (1984), George.T.Hall. 2. Depreciation, Obsolescence and Ageing, (1965), Cowan,P. 3. The Fourth Dimension In building : Strategies for Minimizing Obsolescence.(1993), Donald G. Iselin and Andrew C. Lemer. 1.6.2 Case Study This stage will survey some standard design double storey houses located at Perak. Some houses was built in between the years 1970s and 1990s. Some properties also included building extension for large families, adaptations for the disable, reorganization of space, re-roofing that was present in some of the properties. The renewal internal for these properties was therefore about 20 years. This is a typical time scale for houses and it linked to the condition of properties, available funding, obsolescence, and the need to provide adequate houses in a community. A STUDY OF BUILDING OBSOLESCENCE IN STANDARD DESIGN TERRACE HOUSES IN PERAK Chapter 2 2.1 INTRODUCTION Over the past half of century, our country has been increasing the processes of ageing and obsolescence in building. An observation of buildings in any town will expose an array standards of physical ageing and condition. Many of the buildings are also being used for a purpose which they not original design that one form of obsolescence has affected them. Today, the demand for new building already diminished that many town have become derelict and need some form of urban regeneration. However, such of the regeneration is more likely from renewal and modernization through the development of greenfield sites. Many traditional structures have lower failure rates and costs less to maintain than some of the newer forms of the building. With the increasing level of affluence, standards in buildings, life styles demand to improve quality, space and other. This leads to both the desire for new building and to the renewal of existing structure. More of the renewal of the building is cause by the obsolescence building that failure the structure and the physical. There is considerable degree of confusion surrounding the definition of obsolescence. These two terms are usually without precision. A detail study on the definition of obsolescence is carried out in this chapter to make a clear understanding on building obsolescence. There are two impacts of the obsolescence on a building named are curable obsolescence and incurable obsolescence. Reflection of them will be given separately in this chapter. Obsolescence itself can be divided into different categories. As this dissertation is undertaken to find out which types of obsolescence, it is necessary to understand the definition and differences of each type of obsolescence. Hence, the chapter will also go on to define different types of obsolescence. Hopefully by doing this can provide a guidance to differentiate each type of obsolescence and eliminate the misconception of different types of obsolescence. These changes are related to the uses of a building or certain spaces within the building are expected to serve (i.e., functional); the cost of continuing to use an existing building, subsystem, or component in comparison with the expense of substituting some alternative (economic); the efficiency and service accessible by the existing installed technology compared with new and improved alternatives (technological); or the broad influence of changing social goals, political agendas, or changing lifestyles. 2.2 DEFINITION OF Obsolescence Obsolescence is not depreciation. Both of them are two different terms. However, they are related. Depreciation is an accounting terms and have a formal definition of depreciation, drafted by the Accounting Standard Committee (1987), is: Depreciation is the measure of the wearing out, consumption, or other reduction in the useful economic life of a fixed asset whether arising from use, afflation of time or obsolescence through technological or market changes. This definition is comprehensive and clearly stated what is the depreciation. Besides, the reader can understand the differentiation between the depreciation and obsolescence. Base on this definition, reader can understand the depreciation is a loss in the existing use value of the property and it occurs as the result of the building becoming obsolete. This implies that obsolescence is the cause of the building and depreciation is the effect of the obsolescence. Obsolescence was defined differently by many studies in North America and the United Kingdom. In the United Kingdom, according to Baxter (1971) defined obsolescence as a decline in utility not directly related to physical usage or the passage of time. This definition is not quite correct because the author does not consider physical deterioration as part of obsolescence. In accounting work, obsolescence is separated from physical deterioration. However, based on the original definition given by the Oxford dictionary, obsolescence includes physical deterioration: The word obsolete derives from the Latin obsoleo, which was in use from the middle of the sixteenth century with the following meaning, which is no longer practiced or used; discarded; worn out; effaced through wearing down, atrophy, degeneration. The other aspect that can cause confusion is whether the obsolescence is defined as a decline in the utility of the building as defined by Baxter (1971) or a loss of utility introduced by Flanagan et al. (1989). Both the definitions are correct because both decline and loss of utility are affecting the rental price of a building and therefore, shall be included in the definition. To clarify, obsolescence is the process of becoming antiquated, old fashioned, outmoded, or out-of-date. It describes a decline in utility that not result directly from physical usage, the action of the elements or the passage of time (Baum, 1991). According to Nutt et al (1976), the buildings can only truly be defined as obsolete when they have become completely useless with respect to all possible uses that they have been called upon to support. Utility the sense of use fullness, desirability or satisfaction is therefore central to the concept of obsolescence; if something is not felt to be providing utility, it will be considered obsolete (Smith et al.1998). However, because there is no single measure of utility it is difficult to produce a rational, consistent and objective measure of obsolescence (Raftery, 1991). To overcome this problem, obsolescence in buildings is normally measured in terms of the real or nominal decrease in value (Salway, 1986). Obsolescence also related to decay of tangible and intangible things that all products have an irresistible tendency to become old, but the speed of ageing is different for different objects and circumstances. Obsolescence is much more difficult to control since concerned with the prediction of charges in fashion, technological development, innovation in the design and the use of buildings. Obsolescence occurs due to physical deterioration, wear and tear, technological advances, changes in the economic conditions and user requirement. The design, appearance, taste, legal, and social needs will also have an impact to the building. The impact of obsolescence on a building can be classified into curable obsolescence and incurable obsolescence. Curable obsolescence is one that can be control by the building owner through choice the construction materials, preserve high standards of maintenance and refurbishment. But, it can only manage to a certain extent. The factors into the curable obsolescence are including: a. Construction faults b. Level of deterioration c. Poor level and standard of services Normally, curable obsolescence can be easily counteracted by means of maintenance or repair. Incurable obsolescence being the results of inappropriate changes is less easily controlled by the building owner. The most that can be done is to incorporate flexibility into the design of a building to make alterations and adaptations easier in the future. The treatment of incurable impact of obsolescence requires the introduction of new characteristic into a building, which may not be similar with the existing structure. 2.3 CATEGORISATION OF BUILDING OBSOLESCENCE Previous studies categorized obsolescence into physical obsolescence (Winfrey, 1931; Little 1964); functional and locational obsolescence (Cowan, 1965; Medhurst, 1969); environmental obsolescence (Medhurst, 1969); economic obsolescence (Seymour, 1982); aesthetic, legal, and social obsolescence (CALUS, 1986; Baum 1989). The above studies considered technological and functional obsolescence as one category. However, at later stage, CALUS (1986), as well as Duffy and Henny (1988) suggested that technological and functional obsolescence should be separately categorized because of the differences in the impact on buildings. Suggestions from them are correct. Technological obsolescence should be considered as one of the major causes of obsolescence because of its important. A building that is functionally obsolete has to be demolished to obtain a better return from the site. However, it does not necessarily apply to a building that is technologically obsolete. For example, a lift has become technologically obsolete, but it does not render the function of the building obsolete. Therefore, the building will still be retained but the lift might be replaced. Based on the above, obsolescence therefore, categorized as: Economic Obsolescence; Functional Obsolescence; Aesthetic Obsolescence; Environmental Obsolescence; Legal and social Obsolescence; Technological Obsolescence; Locational Obsolescence; Physical Obsolescence. 2.3.1Economic Obsolescence Economic obsolescence seems to control the durability of real estate, whether residential, commercial or industrial. CALUS (1986) suggested that a building might become economically obsolete following a change in the highest and best use for the land. This might result either from a change in the market condition or in planning policies. Rand came out with another suggestion saying that besides changes in market condition and planning policies, a change in the national economy can also cause the land to appreciate over and above the normal increase in cost. Compare both the suggestions; CALUSs suggestion is poorer. He has neglected national economy as one of the reason that causes economic obsolescence. National economy must be one of the concerns as it has great effect to the land value. Once there is a change in the national economy, the land value will be affected. According to Salway (1986), Economic Obsolescence is considered to be the result of a change in the highest and best use for the land. Such a change could be related to specific site or more generally to the surrounding area. Economic obsolescence is a function of appreciation rather than depreciation: a building becomes economically obsolete not as a result of the existing structure, but through enhancement of the development potential of the underlying land. The building value decreases over time due to obsolescence. The building can become obsolete if the land value exceeds the capital value of the building faster than its expected physical life. On this occasion, replacement of the existing building becomes economically attractive, as better return from the asset can be generated. For instance, the land value in a particular area drops due to relocation of the central business zone to another area. New development having advantage of cheaper land cost will be more competitive and attractive to the tenants and will cause the rental for the existing buildings to decline. Economic obsolescence is incurable and difficult to predict due to lack of information on the future development and confidentiality of government policies. 2.3.2Functional Obsolescence Functional obsolescence is a product of technological progress resulting either in change in the occupiers requirements or in the introduction of new building products: A building may be considered functionally obsolete due to its defective layout (e.g., inadequate floor to ceiling heights and close-spaced structural columns); A building may become functionally inefficient because its inflexibility to accommodate new information technology (e.g., no raised floor for distribution of cables). CALUS (1986) suggested that functional obsolescence is the loss of value of the subject facility resulting from a deficiency (other than physical deterioration) that impairs the subject when compared to a replacement facility. Functional obsolescence is mainly incurable, which can shorten the economic life of a building (Rand, 1986). Baum (1991) considered Functional Obsolescence as the product of technological progress that causes changes in the occupies requirements, impinging on the layout and facilities and also felt that legal and social obsolescence should be regarded as sub-sets of Functional Obsolescence. 2.3.3 Aesthetic Obsolescence Buildings may deem unacceptable by occupiers if the appearance is outdated and incompatible with their corporate image. Either fashion in architectural style may have changed or, alternatively the building may simply look old and fail to satisfy an inspiration to be associated with up-to-date products. The improved appearance of a building could result in more satisfied employees and the higher standing of the firm and its services or products. CALUS (1986) suggested that fashion permeates all facets of life including architectural experience. Whatever the long-term view of posterity about a particular architectural style, it will invariably fall out of favor in the medium term. The changes in fashion will provide an adverse reaction against styles, which characterized the immediately proceeding era. Architectural style cannot be defined precisely. It is best described as a State of the Art of the building design, which is characterized by fashion, vogue, available technology, and personal taste. The introduction of a new architectural style can in some cases, cause buildings with an old design to appear old fashioned and less attractive to potential purchasers or lessees. Buildings with a distinctive design appeal are more likely to have lasting appeal and to be less affected by changes in architectural style. The effect of aesthetic obsolescence is greater in commercial buildings because the buildings with new architectural styles can fetch higher rental values. The decline in the revenue of old buildings requires the buildings to be refurbished to make them attractive and competitive again. 2.3.4 Environmental Obsolescence Medhurst (1969) suggested that environmental obsolescence of a whole neighborhood may occur when the conditions in a neighborhood render it increasingly unfit for its current use. Changes in the character of an area may make a building unsuitable for its original intended use. Environmental obsolescence will normally be of greater relevance to depreciation of land than to the depreciation of buildings. Environmental change such as high pollution, road congestion and urban decay causes environmental obsolescence. For example, an office building may suddenly become obsolete when the adjacent site is used for industrial use. Disturbances from factory engines and air pollution will deter tenants from staying and the building revenue will start to decline. The need for a change in the infrastructure of an area can also cause a building to be environmentally obsolete. For example, the area needs more car parking, pedestrian areas, efficient public transport and roads. This type of obsolescence is not directly related to building design and difficult to forecast. 2.3.5 Legal And Social Obsolescence egal obsolescence stems from the introduction of new legislation or new standards controlling matters such as health, safety, and fire control, which in extreme cases may render a building obsolete. CALUS (1986) and Baum (1989) suggested that changes in social needs might result in occupiers demanding for high and compatible image, good neighborhood and amenities. For instance, cinema in an area loss its utility due to introduction of home videos, VCD or DVD. So, cinema become uneconomic to operate because loses of revenue. The only way is to convert the cinema to other uses. Many building become social obsolete although suitable for the purpose envisaged, because it is situated in the wrong location and therefore of only limited practical to use. egal Obsolescence occurs where a building fails to meet current legislation requirement and the costs involved in bringing the building up to the required standard are prohibitive. In this case, legislation will advance demolition beyond the buildings physical life. Examples, asbestos and other hazardous materials to health are now prohibited in new buildings and where they occur in existing building they need to be either removed or provided with sealed protection systems. The general condition of a building may in some cases make this financially prohibitive, even where grants for their removal are available, resulting in demolition. A STUDY OF BUILDING OBSOLESCENCE IN STANDARD DESIGN TERRACE HOUSES IN PERAK Chapter 2 2.3.6 Technological Obsolescence A Technological Obsolescence occur when the building in no longer technologically superior to alternatives and replacement is undertaken because of lower operating costs or greater efficiency. A building may become technologically obsolete before half of its physical life passed then the speed of change in current society suggests that in the future this life will be reduced even faster. CALUS (1986) suggested that this form of obsolescence occurs as a result of technological innovation. For example, some of the existing electrical and mechanical services are no longer technologically suitable or superior in terms of performance or efficiency. Consider for example, improvement in the lighting efficiency of a new lamp, which may make an existing lighting system no longer economically or technologically effective. In some situations, as with building management systems, it may be possible to install these innovations, without replacing the existing asset. 2.3.7 Locational Obsolescence ocational obsolescence occur when an area and the property located in it suffers from devaluation because it is considered less fashionable or attractive by occupiers (Bryson,1997). A building can become locationally obsolete when the economic activities in the area change (Medhurst, 1969). A change in the city planning, such as relocation of the commercial area and construction of new roads and motorways can change the economic activities of the affected areas. 2.3.8 Physical Obsolescence ittle (1964) suggested that physical obsolescence occurs solely due to the deterioration of the buildings physical fabric. This suggestion is not correct because he stressed only deterioration of buildings physical fabric causes physical obsolescence. The readers may think that no other factors will cause physical obsolescence except for the deterioration of physical fabric. Actually, components of the building can be considered as one of the physical aspect of the building. Hence, if there is any deterioration of the buildings component, the building is considered physically obsolete too. Therefore, Winfrey (1931) said that physical obsolescence not only due to the deterioration of the physical fabric but also the other components such as mechanical and electrical services and equipment used in the building. However, both the definitions have not mentioned what are the factors that cause deterioration of buildings physical fabric, materials or components. Then, CALUS (1986) came out with the suggestion saying that an asset may remain as good as ever in itself, but be rendered obsolete by external factors such as physical deterioration. Physical deterioration is defined as deterioration of the physical fabric of building as function of use and the effect of the passage of time. It is felt that the separation of physical deterioration from obsolescence is not significant, and it is considered as a category of building obsolescence. Flanagan et al. (1989) supported this view by saying that physical deterioration was considered as physical obsolescence. This is because they have similar effects, which can cause the rental price of a building to decrease and its economic life shorten. Flanagan et al. (1989) came out the statement stated that physical obsolescence is determined by environmental and non-environmental factors. Any material or component will deteriorate because of environmental factors such as radiation (solar and thermal), temperature ranges, water (rain, condensation, snow, ice), air contamination, biological factors (micro-organisms, fungi, bacteria) and stress factors (physical action of wind, hail). The non-environmental factors are generally the stresses that are imposed by humans in their various activities of living, working and playing. Examples are permanent loading, fatigue loading, impact, abrasion, chemical attack, normal wear and tear, and abuse by the user. The rate of physical deterioration can be forecast within tolerable levels of accuracy using the lives of the respective building components. However, it must be remembered that considered variation exists in the lives of even the same building component depending upon a wide range of the different circumstances (Ashworth,1996). Kirwan and Martin (1972) suggested that this physical deterioration occurs as the deterioration of the physical structure of the building. It is not simply a factor of age but a combination of age, use and scale of maintenance. Physical deterioration occurs more slowly than other forms of obsolescence, but it is predictable and curable provided the building is well maintained. Baums (1989) showed that physical obsolescence is not as significant as functional and aesthetic obsolescence. The rapid deterioration of buildings and their components can be attributes to many different causes: An emphasis upon initial building costs without considering the consequences of costs in use. Inappropriate design and detailing of buildings and their components. Use if materials and components that have insufficient data concerning their longevity. Constructional practices on site that were poorly managed, supervised and inspected. A lack of understanding of the various mechanisms of deterioration. Insufficient attention given to the maintenance the building stock. Inappropriate use by owners and occupies. Whereas the rate of physical deterioration, can be controlled by the designer through the correct choice of material, methods of construction and appropriate standards of maintenance, obsolescence cannot, other than through the ability to provide a flexible and adaptable design solution to facilitate easier adaptation and renewal at same later date. 2.4 SUMMARY After the study, I clear understanding is developed on depreciation and obsolescence as well as different types of obsolescence. There will be no confusion and misconception surrounding them. Depreciation occurs as the result of the building becoming obsolete. Hence, depreciation is considered as the effect of obsolescence and obsolescence is the cause of depreciation. The impact of obsolescence is classified into curable and incurable. Incurable obsolescence is more crucial than curable obsolescence as it is more difficult to control. It can immediately shorten the physical life of the building. Besides that, I also can understanding the 8 categorizes of obsolescence in this chapter. The categorizes of obsolescence economic, functional, aesthetic and fashion, environmental, legal and social, technological, locational and lastly physical obsolescence. Through the study, it was found that there are no best and perfect suggestions or opinions in the concept of obsolescence. Especially during defining different types of obsolescence, different authors have their own suggest

The Three Types Of Impulse Turbine Engineering Essay

The Three Types Of Impulse Turbine Engineering Essay A turbine is a rotary engine that extracts energy from a fluid or air flow. The simplest turbines have one moving part, a rotor assembly, which is a shaft with blades where the moving fluid acts on the blades, or the blades react to the flow, so that they rotate and impart energy to the rotor. Examples of early turbines are windmills and water wheels. Turbines usually have a casing around the blades that contains and controls the working fluid. Working fluid contains kinetic energy (velocity head) and potential energy (pressure head) and these working fluids may be compressible or incompressible. A compressor or pump is a device similar to a turbine but operating in reverse. The turbines produce almost all electric power on Earth. Most jet engines rely on turbines to supply mechanical work from their working fluid and fuel as do all nuclear ships and power plants. Aircraft engines also use the turbine powered by their exhaust to drive an intake-air compressor, a configuration known as a turbocharger (turbine supercharger). Turbines could also be used as powering system for a remote controlled plane that creates thrust and lifts the plane of the ground. They are as small as soda can, yet still strong enough to move objects with a weight of 100kg. THE TURBINE PROCESS If high-velocity steam is blown on to a curved blade and the steam direction changes as it passes across the blade. The steam will impart a force to the blade as a result of its change in direction across the blade. Now if the blades were free, it would move off in the direction of the force. The principle of steam turbine is where a number of blades were fixed around the circumference of a disc and the disc is free to rotate on a shaft. Steam is then blown across the blades which cause the disc rotates. To increase the rigidity of the blades, the top of the blades are connected together. By means of the nozzles, the high pressure steam is made to give up some of its energy to produce a large increase in kinetic energy of the steam. The steam thus leaves the nozzles at a high velocity. It passes from the nozzles over the blades and thus the turbine disc rotates. The power is then generated at the shaft. The number of nozzles which are in use act as a load to the turbine and so the hi gher the load requires that more steam must be used to sustain the load. Therefore, more nozzles are put into the used. The turbine described is a simple turbine which is also known as de Laval turbine. This type of turbine usually rotates at a very high speed and this high speed will produce a centrifugal force. This turbine is usually small in size and, hence produces small power output. Due to the high speed of rotation, a direct drive between drive between the turbine disc and external equipment is not generally possible. For this reason, a reduction gear box is installed between and turbines of the turbine disc and external equipment. A problem in steam turbine development has been to reduce the speed of rotation and at the same time to make full use of the energy in the steam, thus larger size and higher power output is produce. There are two basic types of turbines which is the impulse turbine and the reaction turbine. THE IMPULSE TURBINES These turbines change the direction of flow of a high velocity fluid jet and the resulting impulse spins the turbine and leaves the fluid flow with diminished kinetic energy. The pressure in the fluid of the turbine rotor blades remains constant. Before reaching the turbine the fluids pressure head is changed to velocity head by accelerating the fluid with a nozzle. Impulse turbines do not require a pressure casement around the runner since the fluid jet is prepared by a nozzle prior to reaching turbine. The transfer of energy for impulse turbines uses the Newtons second law. There are three different types of impulse turbines which are the Velocity compounding turbine Pressure compounding turbine Pressure-velocity compounding turbine THE REACTION TURBINES These turbines develop torque by reacting to the fluids pressure or weight. The pressure of the fluid changes as it passes through the turbine rotor blades. The reaction turbines require a pressure casement to contain the working fluid as it acts on the turbine stage or the turbine must be fully immersed in the fluid flow (wind turbines). The casing contains and directs the working fluid and, for water turbines, maintains the suction imparted by the draft tube. Multiple turbine stages may be used to harness the expanding gas efficiently for compressible working fluids. The transfer of energy in the reaction turbine uses the Newtons third law. Purple Moving blades Blue Velocity Red Pressure Brown Fixed blades THE VELOCITY COMPOUNDING TURBINE IN IMPULSE TURBINES Steam is expanded in a single row or nozzles in this type of turbine. The high velocity steam leaving the nozzles passes on the first row of the moving blades where its velocity is only partially reduced. Then, the steam leaving the first row of moving blades passes into a row of fixed blades mounted in the turbine casing and this row of fixed blades serves to redirect the steam back to the direction of motion such that it is suitable for entry to the second row of moving blades. The steam velocity reduces partially in the second row of the moving blades. A slower turbine is resulted due to only part of the velocity of the steam is used up in each row of the blades. Blue Velocity Red Pressure Green Nozzle Purple Moving blades THE PRESSURE COMPOUNDING TURBINE IN IMPULSE TURBINES The steam enters a row of nozzles where its pressure is only partially reduced and its velocity is increased in this type of turbine. The high velocity steam passes to a row of moving blades where its velocity is reduced. The pressure is again partially reduced and its velocity is again increased when the steam passes into a second row of nozzles. The high velocity steam is then passed to a second row of moving blades where its velocity is again reduced. Next, the steam then passes into a third row of nozzles and so on. All pressure drops occur in the nozzles but the pressure remain constant in each turbine stage. The turbine run slower since steam velocities will not be so high due to only part of the pressure drop occurs in each stage. All stages, however, are coupled to the same shaft, with the result that there is no loss of output. Green Nozzle Purple Moving blades THE PRESSURE-VELOCITY COMPOUNDING TURBINE IN IMPULSE TURBINE A combination of the pressure compounding turbine and the velocity compounding turbine will give a pressure-velocity compounding turbine. In this type of turbine, the steam is partially expanded in a row of nozzles where its velocity is increased. The steam then enters a few rows of velocity compounding turbine and then to a second row of nozzles where its velocity increases. The steam then enters another few rows of velocity compounding turbine and so on. All the pressure at the nozzles decreases. Generally, the diameter from the inlet to the exhaust increases in all multistage turbines. This is because the specific volume increases as the pressure of steam falls. A greater area will be required to pass the steam for continuity of mass flow and this can be done by either increasing the diameter of the turbine discs or increasing the height of the blades. A greater area will be required to pass the steam in order to preserve the mass flow if there is depreciation in velocity. Blue Velocity Red Pressure Green Nozzle Brown Fixed blades Purple Moving blades DIFFERENCES OF THE TURBINES There are many differences that can be stated between the 3 types of impulse turbine. The 3 types of impulse turbine are the: Velocity compounding Pressure compounding Pressure-velocity compounding The differences between these turbines can be classified in terms of: Structure of the turbine The process of the turbine The pressure change in the turbine The velocity change in the turbine Structure of the turbine The structure of the velocity compounding turbine is it consists of a turbine then to a moving blade and a fixed blade. The structure then continues with a second row of moving and fixed blades. The structure of the pressure compounding turbine is it starts from a turbine and then to a moving blade then to a second row of turbine and moving blades and so on. Besides that, the structure of the pressure-velocity compounding turbine is the combine of both of the structure of the velocity compounding turbine and pressure compounding turbine. The process of the turbines High velocity steam from the nozzles passes thru the moving blades then to the fixed blade and the second row of moving and fixed blade in the velocity compounding turbine. In the pressure velocity turbine, the high velocity steam from the nozzles passes thru a moving blades and the low velocity of steam enters another turbine and then to a second row of moving blades and so on. Whereas in the pressure-velocity compounding turbine, the steam from the turbine enters a row of moving blades then a fixed blade and then another row of moving blades. The steam finally then enters another turbine and the process is repeated. The pressure change in the turbine The pressure in the velocity compounding turbine remains constant throughout. In the pressure compounding turbine, the pressure decreases partially when it passes the rows of turbine. Furthermore, the pressure in the pressure-velocity compounding decreases partially then it passes thru the row or turbine and remains constant until the second row of turbine where the pressure decreases partially again. The velocity in the turbine The steam velocity reduces partially in the rows of the moving blades in the velocity compounding turbine. A slower turbine is resulted due to only part of the velocity of the steam is used up in each row of the blades. Whereas in the pressure compounding, the velocity decreases partially when its pass thru the blades but increases back when passing the nozzles. Finally, in the pressure-velocity compounding turbine, the velocity decreases in the turbine and remains constant when passing the blades. The velocity is again decreased when passes thru a second row of turbine. CONCLUSION The steam turbine has greatly improved the energy conversation in our daily lives. There are still future developments oh the steam turbines in order to improve efficiency. Development are now developing turbine which requires a smaller input but produces a bigger output.

Instrumental Reasoning Essays -- Philosophy

Can Instrumental Reasoning Stand Alone? I. Introduction There is something appealing about ordinary instrumental or means-end reasoning. One begins with a want, a goal or a desire and considers available options as means to its satisfaction or achievement. If, among the available options, one is the best or only way to satisfy the desire or achieve the goal, one has a reason to select it. If two or more options both seem to lead to the goal, they may still differ in other ways, e.g., in the probability with which they lead to the goal – in which case (if that was the only difference) one would have reason to choose the option which led to the goal with higher probability. To consider things in the simplest form possible, consider a being with only a single desire. Suppose that this being wants nothing but to break a street-lamp. Even in so simple a case, we can begin to say what he ought to do. Any number of things may be effective. If he has no other goals – not even going unapprehended so that he can do it again with some other street-lamp – he may use a rifle, a pistol, throw rocks at it, climb the lamp-post to bash it with his fist, etc. But we can say that there are some things that, in terms of his goal, he ought not to do, for example, that he ought not to try breaking it (because he won’t succeed) by throwing feathers at it, one by one. It looks as though, even in this deliberately simplified case, means-end reasoning, combined with some knowledge of the world, is enough to tell us something about what he ought to do. This is not, to be sure, a moral ‘ought,’ but we seem to have generated a normative conclusion, an ought-judgment of a modest sort, without appealing to any mysterious non-natural properties ... ...h a person? Perhaps, a real example of an existentialist chooser would say that there is not even a reason for committing oneself rather than not; one just does (or does not). [15] This is not being offered as a solution to the central problem that Korsgaard has raised. I am, as stated earlier, only assuming that there is some solution. Rather, I am trying to show that, given the existence of some solution to that problem, though we need some further normative principle, it does not have to be one that picks out certain ends for us. In short, we can do almost what could have been done had the defenders of the autonomy of instrumental reasoning been correct. (In fact, I think we can do quite a bit more than we could if they had been correct – but that’s a topic for another paper.) [16] And I do not in any case have non-dialectical proofs that they are mistaken.

grendelbeo Epic of Beowulf Essay - Beowulf from Grendels Perspective :: Epic Beowulf essays

Beowulf from Grendel's Perspective One night, as Grendel was sleeping soundly in his home in the swamplands, he was suddenly awakened by the sound of music. The music angered Grendel because he had been up late the night before entertaining his monster friends and was in need of his beauty rest. So he headed out the front door and headed to see what the commotion is all about. ] Upon arrival at the mead hall, Grendel notices the door is much to small for him to enter through it easily. This does not make him happy because it happens everywhere he goes in the little human towns. So he squeezes his shoulders through the small opening and manages to ask the man at the nearest table what was going on. The man, being exhausted from his own celebrations, was to tired to even notice the beast standing over him. Monsters of Grendel's type are not used to be ignored and see it as disrespectful and so do not like to be ignored. Which is why Grendel pulled his head from the doorway and reached his claw in to snatch up unsuspecting man. Everyone else in the room was too busy to even notice the man being lifted from his place behind his drink. With the first man out of the way, Grendel decided to try a different approach. Again, scrunching himself down partway through the door, Grendel looked for someone to tell him what was going on. He cleared his throat an d said with a rough, gravelly voice, "Excuse me!" No one noticed. So he said it louder, "Excuse me!" A few heads turned. After a number of astonished gasps, more turned to see. Detecting he was now the center of attention, Grendel asked what they were all doing making so much noise so late at night. The men only stared at him. So he asked more simply and slowly, not knowing if they were intelligent or not, "What are you doing?" The only response this time was an echoed "Get him!" This surprised Grendel because they seemed to say it in unison. He jumped slightly and hit his head on the doorway. He stood up and rubbed his head and knocked over a horse and its cart with his foot.

Pride in Things Fall Apart, by Chinua Achebe :: essays research papers

In the novel Things Fall Apart, by Chinua Achebe, the main character, Okonkwo, has a lot of pride. There is a well-known aphorism, ?Pride goes before a fall.? Through Okonkwo?s hard work, he became a great man, with a sense of pride and haughtiness. He then suffered a loss of pride, which ultimately led to his down fall and even his suicide. So, through Okonkwo?s actions, Achebe suggests that excessive pride can lead to down fall. For my first point, I am going to start with a joke: ?One day there was an airplane flying Bill Clinton, Bill Gates, Bill (a kid), and Billy Gram. Something went wrong with the plane, and so it had to be abandoned. The pilot strapped on a parachute and said to the passengers, ?There are only four parachutes, and I am taking one.? Bill Clinton grabbed the second and said, ?I am the most important man, and my country needs me, so I am taking one, too.? Then, Bill Gates grabbed the third one and said, ?I am the smartest man in the world, and my people need me.? After Bill Gates left, Bill (the kid) was just looking at the last parachute, when Billy Gram said, ?I am old and you are young, and you have your whole life ahead of you, so take the last parachute.? After a little while, Bill looked up at Billy Gram and said, ?I was not thinking about that, it is just that the smartest man took my back pack.? As you saw from the joke and the book, both Okonkwo and Bill Gates were full of prejud ice pride. Both thought they were great men, and saw others as inferior compared to them. But their pride led to their destruction. Second, Okonkwo?s pride was greatly bruised while attending a great warrior?s funeral, named Ezeudu. It was when ?Darkness was around the corner? (page 124), when Okonkwo?s life took a sharp turn down hill. ?Guns fired the last salute and the cannon rent the sky. And then from the center of the delirious fury came a cry of agony and shouts of horror. It was as if a spell had been cast. All was silent. In the center of the crowd a boy lay in a pool of blood. It was the dead man?s sixteen-year-old son, who with his brothers and half-brothers had been dancing the traditional farewell to their father.

Dmitri Mendeleev Essay

I have chosen to write about Dmitri Mendeleev. What was Dmitri Mendeleev know for? Dmitri Mendeleev was a Russian chemist who developed the periodic classification of the elements. In his version of the periodic table, Mendeleev left gaps in places where he believed unknown elements would fit in and he predicted the likely properties of three of the potential elements. The proof of many of his predictions within his lifetime brought fame to Mendeleev as the founder of the periodic law. So who was Dmitri Mendeleev? Mendeleev was born on February 8, 1834 in the village of Verkhnie Aremzyani, near Tobolsk in Siberia. Mendeleev is thought to be the youngest of 17 siblings. His father was a teacher of politics, philosophy, and fine arts. Unfortunately for the family’s well being, his father became blind and lost his teaching position. His mother was forced to work and she restarted her family’s abandoned glass factory. At the age of 13, after the passing of his father and the destruction of his mother’s factory by fire, Mendeleev attended the Gymnasium in Tobolsk. In 1849, the Mendeleev family relocated to Saint Petersburg, where Mendeleev entered the Main Pedagogical Institute in 1850. Sometime after Mendeleev graduated, he contracted tuberculosis, causing him to move to the Crimean Peninsula on the northern coast by the Black Sea in 1855. While he was there he became a science master of the Simferopol gymnasium. Later he returned with fully restored health to Saint Petersburg in 1857. Between 1859 and 1861, he worked on the capillarity of liquids and the workings of the spectroscope in Heidelberg. In late August 1861 he wrote his first book on the spectroscope. In April of 1862 Mendeleev became engaged to Feozva Nikitichna Leshcheva, and they married on 27 April 1862 at Nikolaev Engineering Institute’s church in Saint Petersburg. Mendeleev became a professor at the Saint Petersburg Technological Institute and Saint Petersburg State University in 1864 and 1865. After becoming a teacher, Mendeleev wrote the textbook, Principles of Chemistry. As he attempted to classify the elements according to their chemical properties, he too noticed patterns that led him to postulate his periodic table. Mendeleev was also unaware of the earlier work on periodic tables going on. In 1863 there were 56 known elements with a new element being discovered at a rate of approximately one per year. Mendeleev made the following table, and by adding additional elements following this pattern, developed his extended version of the periodic table. In 1865 he became Doctor of Science for his dissertation on the combinations of water with alcohol. He achieved tenure in 1867, and a few years later by 1871 Mendeleev had transformed Saint Petersburg into an internationally recognized center for chemistry research. Later on in 1876, Mendeleev had become obsessed with Anna Ivanova Popova and began obsessed with her. In 1881 he proposed to her and threatened suicide if she refused to marry him. His divorce from Feozva Nikitichna Leshcheva was finalized one month after he had married Anna in early 1882. Even after the divorce, Mendeleev was technically a bigamist. His divorce and the surrounding controversy contributed to his failure to be admitted to the Russian Academy of Sciences. Mendeleev was widely honored by scientific organizations all over Europe, including the Copley Medal from the Royal Society of London; he resigned from Saint Petersburg University in August of 1890. In 1893, he was appointed Director of the Bureau of Weights and Measures. It was in this role that he was directed to formulate new state standards for the production of vodka. As a result of his work, new standards for vodka were introduced into Russian law and all vodka had to be produced at 40% alcohol by volume. Mendeleev also investigated the composition of petroleum, and helped to found the first oil refinery in Russia. In 1907, Mendeleev died at the age of 72 in Saint Petersburg from influenza. The crater Mendeleev on the Moon, as well as element number 101, the radioactive mendelevium, are named after him. Referances: E.Babaev. February 20, 2012. http://www.chem.msu.su/eng/misc/mendeleev/welcome.html http://www.biography.com/people/dmitri-mendeleyev-9405465 http://www.chemistry.co.nz/mendeleev.htm http://chemistry.about.com/od/famouschemists/p/mendeleevbio.htm http://www.famousscientists.org/dmitri-mendeleev/ Reflection, I decided to write about Dmitri Mendeleev because I thought he sounded the most interesting. I also wanted to learn more about him and his life. Chemistry is very entertaining to me and Mendeleev basically wrote the periodic table.

Learning Organization Essay

EXECUTIVE SUMMARY ar prolife military rank as corporations seek to ameliorate themselves and construct an edge. Unfortunately, however, failed programs furthest out do victoryes, and emolument order roost low. Thats beca map al to the highest degree companies bear failed to grasp a basic truth. in front people and companies bunghole improve, they premier(prenominal) inseparable(prenominal)iness decide. And to do this, they pauperization to look beyond rhetoric and high philosophy and sharpen on the inaugural harmonics. usual chord critical issues essential be addressed before a partnership preserve truly aim a scholarship makeup, writes Harvard Business schooling professor David Garvin.First is the fountainhead of essence a swell-grounded, easy-to- prosecute out comment of a cultivation musical arrangement. routine summates recognisement cleargonr useable guidelines for example. Fin al hotshoty, better excessivelyls for barment can asse ss an systems rate and level of t individu eachying. victimization these deuce-ace Ms as a framepiece of work, Garvin defines learnedness organizations as skilled at 5 main activities systematic fuss solving, experiment with refreshful onward motiones, eruditeness from bygone escort, teaching from the best practices of former(a)s, and transferring recognise right a path and efficiently byout the organization.And since you cant manage something if you cant measure it, a fatten acquirement analyze is a must. That embroils measuring cognitive and behavioural intensifys as well as perceptible improvements in results. No reading organization is strengthened each(prenominal) overnight. Success comes from c befully courtly attitudes, cargos, and management solvees that accrue slowly and steadily. The archetypical-class honours degree step is to foster an environs causative to learning. Analog De ungodlinesss, chaparral nerve, drive out, GE, and other c ompanies translate enlightened examples. dogging IMPROVEMENT PROGRAMSCONTINUOUS IMPROVEMENT PROGRAMS be sprouting up each(prenominal) over as organizations sieve to better themselves and gain an edge. The subject argona rock is long and varied, and some snips it seems as though a program a month is needed just to keep up. Unfortunately, failed programs far outnumber successes, and improvement rates perch distressingly low. Why? Because roughly companies feel failed to grasp a basic truth. regular improvement requires a commitment to learning. How, laterwards all, can an organization improve without first learning something sunrise(prenominal)?Solving a difficulty, introducing a harvest-time, and reengineering a dish out all require seeing the world in a untried light and per social classing accordingly. In the absence of learning, companies-and individuals -simply repeat experient practices. Change carcass cosmetic, and improvements argon all fortuitous or short -lived. A few farsighted executives Ray Stata of Analog Devices, Gordon brand of Chaparral Steel, Paul eachaire of Xerox- cast recognized the merge between learning and endless improvement and induce begun to re commission their companies around it.Scholars a kindred eat up jumped on the bandwagon, beating the machinate for learning organizations and do itledge-creating companies. In rapidly changing businesses like semiconductors and consumer electronics, these ideas atomic number 18 fast fetching hold. Yet despite the encouraging signs, the topic in bear-sized dampen remains murky, conf apply, and difficult to penetrate. Meaning, Management, and Measurement Scholars ar partly to blame. Their discussions of learning organizations shake off much been reverent and utopian, filled with near mystical terminology.Paradise, they would shake you believe, is just around the corner. Peter Senge, who everydayized learning organizations in his book The Fifth Discipline , set forth them as stations where people continually boom out their capacity to create the results they truly desire, where cutting-sp headg(prenominal) and expansive patterns of persuasion be nurtured, where incorporated aspiration is set free, and where people argon continually learning how to learn together. To touch these ends, Senge suggested the use of five component technologies systems speculationing, personalised mastery, mental models, shargond vision, and group learning.In a similar spirit, Ikujiro Nonaka characterized intimacy-creating companies as places where inventing rising k without delayledge is non a specialized application it is a way of behaving, indeed, a way of being, in which everyone is a experience worker. Nonaka suggested that companies use metaphors and organizational redundancy to localise thinking, encourage dialogue, and make tacit, instinctively understood ideas explicit. Sound idyllic? Absolutely. Desirable? Without question. pictured does it tolerate a framework for action mechanism? Hardly. The recommendations ar far too abstract, and too many questions remain unanswered.How, for example, go away managers come when their companies flummox go bad learning organizations? What concrete transmits in behavior atomic number 18 peal for? What policies and programs must be in place? How do you get from here to in that respect? close discussions of learning organizations finesse these issues. Their focus is high philosophy and grand themes, wholesale metaphors kinda than the gritty details of practice. Three critical issues be left feeded to date each is es displaceial for rough-and-ready implementation. First is the question of meaning. We need a plausible, well-grounded definition of learning organizations it must be actionable and easy to apply.Second is the question of management. We need cle ber guidelines for practice, filled with operational advice rather than high aspirations. And third is the question of measurement. We need better tools for assessing an organizations rate and level of learning to see to it that gains give in fact been made. erst these three Ms are addressed, managers go out have a firmer foundation for entering learning organizations. Without this groundwork, progress is unalikely, and for the dewy-eyedst of reasons. For learning to find a meaningful corporate goal, it must first be understood. What Is a learn Organization?Surprisingly, a clear definition of learning has proved to be problematical over the years. organizational theorists have canvas learning for a long time the go with quotations suggest that there is hushed considerable disagreement (see Definitions of Organizational attainment on page 77). Most scholars collect organizational learning as a offshoot that unfolds over time and association it with familiarity acquisition and improve performance. just they differ on other all- definitive(prenominal) matte rs. Some, for example, believe that behavioral modification is required. for learning others insist that new ways of thinking are luxuriant.Some cite education attending as the mechanism through which learning takes place others propose-shared insights, organizational routines, regular memo. And some think that organizational learning is common, speckle others believe that flawed, self-serving interpretations are the norm. How can we discern among this cacophony of voices to that extent build on earlier insights? As a first step, consider the succeeding(a) definition A learning organization is an organization skilled at creating, getting and transferring fellowship, and at modifying its behavior to reflect new familiarity and insights.This definition begins with a simple truth new ideas are essential if learning is to take place. sometimes they are created de novo, through flashes of insight or creativeness at other times they do from extracurricular the organization or are communicated by associationable insiders. whatsoever their on the loose(p)ing, these ideas are the trigger for organizational improvement. But they cannot by themselves create a learning organization. Without ac come withing changes in the way that work gets done, except the potency for improvement exists.This is a astonishingly stringent test for it rules out a number of distinct candidates for learning organizations. umpteen universities fail to trans throw, as do many consulting firms. Even command Motors, despite its youthful efforts to improve performance, is found wanting. solely of these organizations have been effective at creating or getting new knowledge plainly notably less prospered in applying that knowledge to their feature activities. Total grapheme management, for example, is now taught at many business schools, yet the number utilise it to guide their own decision making is very diminished.Organizational consultants advise clients on socia l kinetics and small-group behavior but are ill-famed for their own infighting and factionalism. And GM, with a few exceptions (like Saturn and NUMMI), has had exact success in revamping its manufacturing practices, evening though its managers are experts on lean manufacturing, JIT doing, and the requirements for improved attribute of work life. Organizations that do make it the definitional test Honda, Corning, and General Electric come tenderly to mind have, by contrast, become adept at translating new knowledge into new ways of behaving.These companies actively manage the learning process to ensure that it occurs by stick out rather than by chance. typical policies and practices are responsible for their success they form the building blocks of learning organizations. Building Blocks discipline organizations are skilled at five main activities systematic problem solving, experiment with new progressiones, learning from their own experience and past history, learnin g from the experiences and best practices of others, and transferring knowledge quickly and efficiently throughout the organization. several(prenominal)ly is accompanied by a typical lookout, tool kit, and pattern of behavior. Many companies practice these activities to some degree. But few are consistently successful because they rely largely on happenstance and isolated examples. By creating systems and processes that support these activities and integrate them into the fabric of routine operations, companies can manage their learning to a greater extent than(prenominal) effectively. 1. Systematic problem solving. This first activity rests heavily on the philosophy and methods of the tonus movement.Its primal ideas, now widely accepted, include Relying on the scientific method, rather than guesswork, for analyse problems (what Deming calls the Plan, Do, Check, Act cycle, and others refer to as hypothesis-generating, hypothesistesting techniques). insistency on data, ra ther than assumptions, as land for decision making (what quality practitioners call fact-based management). Using simple statistical tools (histograms, Pareto charts, correlations, cause-and-effect diagrams) to organize data and draw inferences.Most training programs focus primarily on problem solving techniques, using exercises and unimaginative examples. These tools are relatively straightforward and comfortably communicated the necessary mind-set, however, is much difficult to establish. accuracy and precision are essential for learning. Employees must therefore become more bust in their thinking and more captive to details. They must continually ask, How do we know thats true? , recognizing that close enough is not good enough if historical learning is to take place.They must labour beyond obvious symptoms to assess underlying causes, often collecting evidence when pompous wisdom says it is unnecessary. Otherwise, the organization will remain a prisoner of gut facts and baggy reasoning, and learning will be stifled. Xerox has mastered this approach on a keep friendshipwide scale. In 1983, senior managers launched the companys Leadership Through Quality endeavour since wherefore, all employees have been trained in small-group activities and problem-solving techniques. instantly a six-step process is utilise for virtually all decisions (see Xeroxs Problem-Solving Process).Employees are provided with tools in quad areas generating ideas and collecting information (brainstorming, interviewing, surveying) make consensus (list reduction, rating forms, weighted voting) analyzing and displaying data (cause-andeffect diagrams, force- vault of heaven analysis) and planning actions ( diminish charts, Gantt charts). They then practice these-tools during training sessions that experience several days. educational activity is presented in family groups, members of the alike(p) section or business- social unit aggroup, and the tools are applied to substantial problems facing the group.The result of this process has been a common vocabulary and a consistent, companywide approach to problem solving. erst employees have been trained, they are expected to use the techniques at all meetings, and no topic is absent limits. When a high-level group was formed to followup Xeroxs organizational social organisation and suggest alternatives, it employed the very same process and tools. 2. Experimentation. This activity quests the systematic probing for and testing of new knowledge. Using the scientific method is essential, and there are obvious parallels to systematic problem solving.But unlike problem solving, experimentation is normally motivate by opportunity and expanding horizons, not by current difficulties. It takes two main forms current programs and one-ofa-kind demonstration molds. Ongoing programs normally involve a inveterate series of small experiments, knowing to produce incremental gains in knowledge. They a re the mainstay of most continuous improvement programs and are in particular common on the shop floor. Corning, for example, experiments continually with several(a) raw materials and new formulations to extend yields and provide better grades of glass.Allegheny Ludlum, a specialty steelmaker, on a regular basis examines new rolling methods and improved technologies to cram reapingiveness and reduce lives. Successful on-going programs share several characteristics. First, they work herculean to ensure a steady flow of new ideas, even if they must be imported from outside the organization. Chaparral Steel sends its first-line supervisors on sabbaticals around the globe, where they reproof faculty member and industry leaders, develop an savvy of new Xeroxs Problem-Solving Process graduationQuestions to be Answered What do we want to change? Expansion/ Divergence Lots of problems for stipulation Contraction/ Convergence unrivaled problem statement, one desired state con cur upon Whats near to Go to the Next Step Identification of the gap craved state described in observable terms Key causes documented and be 1. Identify and select problem 2. fail Problem Whats preventing us from reaching the desired state? How could we make the change? Whats the best way to do it? Lots of potential causes set.Key causes set and verified 3. Generate potential etymons 4. distribute and plan the solution Lots of ideas on how to solve the problem Lots of criteria for evaluating potential solutions. Lots of ideas on how to implement and respect the selected solution Potential solutions clarified Criteria to use for evaluating solution agreed upon Implementation and military rating plans agreed upon Implementation of agreed-on contingency plans (if necessary) military strength of solution agreed upon Continuing problems (if any) identified Solution List.Plan for making and catch the change Measurement criteria to evaluate solution effectiveness 5. Implement t he solution be we following the plan? Solution in place 6. Evaluate the solution How well did it work? Verification that the problem is solved, or Agreement to address continuing problems work practices and technologies, then bring what theyve learned prickle to the company and apply it to daily operations. Inlarge part as a result of these initiatives, Chaparral is one of the five lowest cost steel plants in the world.GEs Impact Program originally sent manufacturing managers to Japan to study factory innovations, such(prenominal) as quality circles and kanban cards, and then apply them in their own organizations like a shot atomic number 63 is the destination, and increaseivity improvement practices the target. The program is one reason GE has recorded productivity gains averaging nearly 5% over the last four years. Successful current programs as well as require an incentive system that favors try taking. Employees must feel that the benefits of experimentation go past the cost otherwise, they will not participate.This creates a difficult challenge for managers, who are pin down between two perilous extremes. They must maintain accountability and restrict over experiments without stifling creativity by unduly penalizing employees for tribulations. Allegheny Ludlum has perfected this juggling act it keeps expensive, high- impingement experiments off the scorecard used to evaluate managers but requires prior approvals from four senior vice presidents. The result has been=a history of productivity improvements annually avenging 7% to 8%.Finally, ongoing programs need managers and employees who are trained in the skills required to perform and evaluate experiments. These skills are seldom intuitive and must ordinarily be learned. They cover a broad(a) sweep statistical methods, like design of experiments, that efficiently equalize a large number of alternatives graphical techniques, like process analysis, that are essential for re calculative work f lows and creativity techniques, like storyboarding and role playing, that keep invention ideas flowing. The most effective training programs are tightly focused and feature a small set of techniques tai apprehensiond to employees necessitate.Training in design of experiments, for example, is useful for manufacturing engineers, while creativity techniques are well desirable to development groups. manifestation aims are usually larger and more complex than ongoing experiments. They involve holistic, system wide changes, enfoldd at a single direct, and are often undertaken with the goal of developing new organizational capabilities. Because these projects represent a sharp jade from the past, they are usually designed from scratch, using a clean slate approach.General Foodss Topeka plant, one of the first high commitment work systems in this country, was a pioneering demonstration project initiated to introduce the idea of self-managing aggroups and high levels of worker self -sufficiency a more recent example, designed to rethink small-car development, manufacturing, and sales, is GMs Saturn Division. Demonstration projects share a number of distinctive characteristics They are usually the first projects to be principles and approaches that the organization hopes to adopt ulterior on a larger scale.For this reason, they are more transitional efforts than endpoints and involve considerable learning by doing. Mid-course corrections are common. They implicitly establish policy guidelines and decision rules for later projects. Managers must therefore be cutting to the precedents they are setting and must send gruelling signals if they expect to establish new norms. They often encounter severe tests of commitment from employees who wish to see whether the rules have, in fact, changed. They are normally developed by strong multifunctional teams reporting directly to senior management.(For projects targeting employee familiarity or quality of work l ife, teams should be multilevel as well. ) They tend to have only limited impact on the rest of the organization if they are not accompanied by explicit strategies for transferring learning. All of these characteristics appeared in a demonstration project launched by Copeland Corporation, a highly successful compressor manufacturer, in the mid-1970s. Matt Diggs, then the new CEO, wanted to transform the companys approach to manufacturing. Previously, Copeland had machined and assembled all products in a single facility Costs were high, and quality was marginal.The problem, Diggs felt, was too much complexity. At the outset, Diggs appoint a small, multifunctional team the task of designing a focused factory consecrate to a narrow, newly developed product line. The team reported directly to Diggs and took three years to complete its work. Initially, the project cipher was $10 zillion to $12 gazillion that figure was repeatedly revised as the team found, through experience and wi th Diggss prodding, that it could achieve dramatic improvements. The final investment, a total of $30 million, yielded unanticipated breakthroughs in reliability testing, automatic tool adjustment, and programmable control.All were achieved through learning by doing. The team set step-upal precedents during the plants start-up and early operations. To dramatize the importance of quality, for example, the quality manager was appointed second-in-command, a operative move upward. The same reporting kin was used at all succeeding plants. In addition, Diggs urged the plant manager to wild leek up slowly to full production and resist all efforts to proliferate products. These instructions were unusual at Copeland, where the marketing department normally ruled. both(prenominal) directives were quickly tested management held firm, and the implications were felt throughout the organization. Manufacturings stature improved, and the company as a whole recognized its competitive contribu tion. One observer commented, Marketing had always run the company, so they couldnt believe it. The change was visible at the highest levels, and it went down hard. Once the first focused factory was runway smoothly -it seized 25% of the market in two years and held its edge in reliability for over a decade-Copeland built four more factories in quick succession.Diggs assigned members of the initial project to each factorys design team to ensure that early learnings were not woolly-headed these people later rotated into in operation(p) assignments. Today focused factories remain the radical of Copelands manufacturing strategy and a continuing source of its cost and quality advantages. Whether they are demonstration projects like Copelands or ongoing programs like Allegheny Ludlums, all forms of experimentation seek the same end piteous from superficial knowledge to deep accord. At its simplest, the distinction is between knowing how things are done and knowing why they occur. sharp how is partial knowledge it is rooted in norms of behavior, standards of practice, and settings of equipment. Knowing why is more fundamental it captures underlying causeand-effect relationships and accommodates exceptions, adaptations, and unforeseen events. The ability to control temperatures and pressures to align grains of ti and form silicon steel is an example of knowing how understanding the chemical and physical process that produces the co-occurrence is knowing why. Further distinctions are possible, as the insert Stages of Knowledge suggests.Operating knowledge can be arrayed in a hierarchy, moving from limited understanding and the ability to make few distinctions to more complete understanding in which all contingencies are anticipated and controlled. In this context, experimentation and problem solving foster learning by pushing organizations up the hierarchy, from level to higher stages of knowledge. 3. Learning from past experience. Companies must review thei r successes and failures, assess them systematically, and record the lessons in a form that employers find open and accessible.One expert has called t9is process the Santayana Review, citing the renowned philosopher George Santayana, who coined the phrase Those who cannot remember the past are condemned to repeat it. Unfortunately, too many managers today are indifferent, even hostile, to the past, and by flunk to reflect on it, they let worth(predicate) knowledge escape. A study of more than 150 new products concluded that the knowledge gained from failures is often instrumental in achieving later(prenominal) successes. In the simplest terms, failure is the ultimate teacher. IBMs 360 computer series, for example, one of the most democratic and profitable ever built, was based on the technology of the failed Stretch computer that preceded it. In this cutting, as in many others, learning occurred by chance rather than by careful planning. A few companies, however, have constit uted processes that require their managers to periodically think virtually the past and learn from their mistakes. Boeing did so contiguously subsequently its difficulties with the 737 and 747 plane programs. Both planes were introduced with much fanfare and also with skilful problems.To ensure that the problems were not repeated, senior managers licensed a high-level employee group, called Project Homework, to compare the development processes of the 737 and 747 with those of the 707 and 727, two of the companys most profitable planes. The group was asked to develop a set of lessons learned that could be used on future projects. after(prenominal) working for three years, they produced hundreds of recommendations and an inch-thick booklet. Several members of the team were then transferred to the 757 and 767 start-ups, and guided by experience, they produced the most successful, error-free launches in Boeings history.Other companies have used a similar retrospective approach. L ike Boeing, Xerox studied its product development process, examining three troubled products in an effort to understand why the companys new business initiatives failed so often. Arthur D. Little, the consulting company, focused on its past successes. higher-ranking management invited ADL consultants from around the world to a two-day jamboree, featuring booths and presentations documenting a wide range of the companys most successful practices, publications, and techniques.British Petroleum went even further and established the post-project appraisal unit to review study investment projects, write up pillow slip studies, and derive lessons for planners that were then incorporated into revisions of the companys planning guidelines. A five-person unit reported to the board of directors and reviewed six projects annually. The stack of the time was spent in the field interviewing managers. This type of review is now conducted on a regular basis at the project level. At the spirit of this approach, one expert has observed, is a mind-set that enables companies to recognize the value of fur-bearing failure as contrasted with unproductive success. A productive failure is one that leads to insight, understanding, and thus an addition to the commonly held wisdom of the organization. An unproductive success occurs when something goes well, but nobody knows how or why. IBMs legendary founder, Thomas Watson, Sr. , manifestly understood the distinction well. Company lore has it that a immature manager after losing $10 million in a risky venture was called into Watsons office. The young man, thoroughly intimidated, began by saying, I guess you want my resignation. Watson replied, You cant be serious. We just spent $10 million educating you. Fortunately, the learning process need not be so expensive. Case studies and post-project reviews like those of Xerox and British Petroleum can be performed with little cost other than managers time. Companies can also enlist the dish up of faculty and students at local colleges or universities they bring fresh perspectives and view internships and case studies as opportunities to gain experience and increase their own learning. A few companies have established computerized data banks to speed up the learning process.At Paul esteem Life Insurance, management requires all problem-solving teams to complete short registration forms describing their proposed projects if they hope to qualify for the companys award program. The company then enters the forms into its computer system and can immediately retrieve a list of other groups of people who have worked or are working on the topic, on with a contact person. Relevant experience is then just a promise call away. 4. Learning from others. Of course, not all learning comes from reflection and self-analysis.Sometimes the most powerful insights come from looking outside ones immediate environment to gain a new perspective. instruct managers know that even c ompanies in on the whole different businesses can be full-bodied sources of ideas and catalysts for creative thinking. At these organizations, enthusiastic borrow is replacing the not invented here syndrome. Milliken calls the process SIS, for Steal Ideas Shamelessly the broader term for it is benchmarking. check to one expert, benchmarking is an ongoing investigation and learning experience that ensures that best industry practices are uncovered, analyzed, adopted, and implemented. The greatest benefits come from studying practices, the way that work gets done, rather than results, and from involving line managers in the process. Almost anything can be benchmarked. Xerox, the images creator, has applied it to billing, warehousing, and automated manufacturing. Milliken has been even more creative in an exalt moment, it benchmarked Xeroxs approach to benchmarking. Unfortunately, there is still considerable confusion about the requirements for successful benchmarking. workbench marking is not industrial tourism, a series of ad hoc visits to companies that have standard favorable publicity or win quality awards.Rather, it is a disciplined process that begins with a thorough search to light upon best-practice organizations, continues with careful study of ones own practices and performance, progresses through systematic commit visits and interview and concludes with an analysis of results, development of recommendations, and implementation. spot timeconsuming, the process need not be terribly expensive AT&Ts Benchmarking Group estimates that a moderate-sized project takes four to six months and incurs out-of-pocket costs of $20,000 (when personnel costs ax included, the figure is three to four times higher).Bench marking is one way of gaining an outside perspective another, equally fertile source of ideas is customers. Conversations with customers invariably stimulate learning they are, after all, experts in what they do. Customers can provide street s mart product information, competitive comparisons, insights into changing preferences, and immediate feedback about service and patt ern of use. And companies need these insights at all levels, from the executive cortege to the shop floor. At Motorola, members of the Operating and polity Committee, including the CEO, meet personally and on a regular basis with customers.At Worthington Steel, all machine operators make periodic, unescorted trips to customers factories to discuss their needs. Sometimes customers cant articulate their needs or remember even the most recent problems they have had with a product or service. If thats the case, managers must observe them in action. Xerox employs a number of anthropologists at its Palo Alto Research heart to observe users of new document products in their offices. Digital Equipment has developed an interactive process called contextual inquiry that is used by software engineers to observe users of new technologies as they go about their work.Milliken has created first-delivery teams that accompany the first shipment of all products team members follow the product through the customers production process to see how it is used and then develop ideas for further improvement. Whatever the source of outside ideas, learning will only occur in a receptive environment. Managers cant be defensive and must be open to criticism or bad news. This is a difficult challenge, but it is essential for success.Companies that approach customers assuming that we must be right, they have to be wrong or visit other organizations certain that they cantteach us anything seldom learn very much. Learning organizations, by contrast, groom the art of open, attentive listening. 5. Transferring knowledge. For learning to be more than a local affair, knowledge must spread quickly and efficiently throughout the organization.Ideas carry maximum impact when they are shared broadly rather than held in a few hands. A variety of mechanisms spur this p rocess, including written, oral, and visual reports, site visits and tours, personnel rotation programs, education and training programs, and standardization programs. Each has distinctive strengths and weaknesses.Reports and tours are by far the most popular mediums. Reports serve many purposes they summarize findings, provide checklists of dos and donts, and describe important processes and events. They cover a multitude of topics, from benchmarking studies to write up conventions to newly discovered marketing techniques. Today written reports are often supplemented by videotapes, which offer greater immediacy and fidelity. Tours are an equally popular means of transferring knowledge, especially for large, multidivisional organizations with multiple sites.