or-project supply chain

Upload: sanjaybagriya

Post on 04-Apr-2018

221 views

Category:

Documents


0 download

TRANSCRIPT

  • 7/31/2019 Or-Project Supply Chain

    1/33

    Demand forecasting insupply chain

    management

    Prepared By:

    1.Amith .M2.Chetan C.S3.Sanjay bagriya4.Yogeshkumar Joshi

  • 7/31/2019 Or-Project Supply Chain

    2/33

    Introduction

    Supply Chain Management (SCM) can be best described as the natural

    extension of the downsizing (right-sizing) and re-engineering performed by

    the organization(s) in the past. Downsizing and re-engineering transformed

    the enterprises into lean and mean competitive units, by cost cutting and

    process simplifications. These operations (of downsizing and re-engineering)

    involved the optimization (in terms of the number of persons involved, the

    time taken, the complexity of the work etc.) of business units (functional

    and/or administrative domains) over which the organizations had full control.

    These strategies did lead to increased productivity and profitability of the

    organizations but as the benefits of these leveled off, it was realized that the

    approach to the way organizations work needed to be changed. The above

    changes were a by-product of the isolationist (closed system) world picture

    of the enterprises involved in the full value chain; with organizations (the

    system) trying to survive in an hostile environment; assuming that all other

    participants in the value chain were adversaries with whom the organization

    must compete, even though the operations performed by the separate

    organizations may be supplementary in nature rather than complementary.

    The realization that this world picture was an impediment to the growth of

    organizations prompted the enterprises to start seeking strategic alliances

    with other organizations. The formation of these alliances required a basis (a

    common ground) which would be acceptable to each and every partner in thealliance. This common basis is/was supplied by the participation of the

    organizations in the value chain (the demand-supply chain). The participants

    in the chain, suppliers, sub-contract suppliers, in house product processes,

    transportation, distribution, warehouses, and the end customer, generally,

  • 7/31/2019 Or-Project Supply Chain

    3/33

    perform mutually exclusive tasks and thus do not compete directly with each

    other.

    Issues in SCM

    A supply chain encompasses all the activities, functions and facilities

    involved in producing and delivering a product and/or service, from suppliers

    (and their suppliers) to the customers. The supply chain management (SCM)

    paradigm is geared towards optimizing each component of what used to be

    called (Production and) Operations management (production, warehousing,

    inventory, transportation and distribution etc.) and the inter-links between

    these components synergistically. In the 70s and the 80s, various models for

    production and operations control and management were developed: Just-In-

    Time (JIT) Inventory management model, Vendor Managed Inventory (VMI)

    model, Zero Inventory (ZI) model, Total Quality Management (TQM) etc.

    These models focused on the various components of the supply chain in

    isolation, this implies that these models were oriented towards the

    optimization of a sub-part of the system whereas the SCM paradigm aims at

    the optimization of the full chain. This leads to trade-offs among the different

    components of the supply chain. For example, JIT would require a factory to

    keep inventories low and produce and distribute products in a timely manner,

    however JIT ignores many other aspects which cannot be seen independently,

    e.g. if the availability of the input materials is uncertain and irregular, the

    factory may need to insure smooth and continuous production. Similarly,

    regional stocking may permit reductions in transportation costs through

    increased shipment consolidation, as well as expanded sales through better

    delivery performance. These improvements may be accomplished with only

    moderate increases in inventory and warehousing cost(s). However, in an

  • 7/31/2019 Or-Project Supply Chain

    4/33

    environment where different functional units manage the various logistics

    activities independently, an organization is less likely to properly analyze such

    important trade-offs.

    Fig. -1 : Interdependence of supply chain with other functional domains

    in an enterprise.

    Moreover, these models also ignore the interdependency of production

    and operations functions with other domains within an organization, such as

    marketing and finance. Marketing decisions have serious impact on logisticsfunction and vice-versa. For example, a marketing promotion campaign

    should be coordinated with production planning, since a higher demand may

    be expected. On the other hand, when raw materials are cheap, or when the

    factory temporarily has an over-capacity, the marketing department may

    decide to cut prices and/or start other promotion campaigns during these

    periods to increase demands. Also, financial decisions are driven by

    production and logistics decisions. Production of new products requires the

    investment in raw materials and consumes other change-over costs. Financial

    managers have to be aware of the increased demand for capital to finance the

    production plan. Likewise, the delivery of finished products generates

  • 7/31/2019 Or-Project Supply Chain

    5/33

    financial income, so the forecast demand can be used to calculate/forecast the

    accounts payable and receivable in the future. The above description means

    that production, finance and marketing decisions cannot be made

    independently (fig.1). All these decisions are driven by the activities in the

    supply chain of a manufacturing company. Fig.-1 shows a simple

    representation of the interdependence of the supply chain and the other

    functional domains in the organization. The links between the (other)

    functional domains - marketing, sales, human resources etc. - are not shown.

    The linkage between the supply chain components and the other functional

    domains relies heavily on information sharing to have an effective impact.

    One other major factor in the current scenario is the globalization of the

    supply chain. With the fall of the East-European socialist bloc and the opening

    of the Asian market, the trade barriers began falling in the 1980s and the 90s.

    This lead to organizations having a supply chain that criss-crossed the globe.

    The proliferation of trade agreements - EC, ASEAN, NAFTA, APEC, etc. - has

    changed the global market. SCM now has become not only a problem oflogistics but also demands that supply chain management must look into the

    ramifications of these agreements on the cost of transportation (including

    tariffs or duties) of products within a trade zone and outside it[1].

    Furthermore, organizations now acknowledge that efficient consumer

    response (ECR) can lead to competitive edge. SCM is tantamount to

    coordinating all the operations of an organization with the operations of the

    suppliers and customers. Effective SCM strategies are essential for successful

    implementation of ECR programmers. Thus, a production planning and

    control model that focuses on all the aspects of the operations and

    distribution activities and links with other functional domains such as finance

  • 7/31/2019 Or-Project Supply Chain

    6/33

    and marketing is needed. The supply chain management model should also

    perform the task of managing and coordinating activities upstream and

    downstream in the supply chain. Of course, such a model in its entirety

    becomes very complex and cannot be used without a sufficient computational

    infrastructure.

    Supply-Demand Nexus

    To have an effective supply chain management framework;

    organizations must have a clear understanding of the supply - demand nexus

    and its implications for strategy and implementation. There is an

    interdependent relationship between supply and demand; organizations need

    to understand customer demand so that they can manage it, create future

    demand and, of course, meet the level of desired customer satisfaction.

    Demand defines the supply chain target, while supply side capabilities

    support, shape and sustain demand.

    When one considers how tangentially marketing and operations area of

    an organization typically interact (in practice), it becomes obvious that

    putting together the supply-demand can only occur in the context of overall

    perspective. The wide gap between the supply and demand sides of an

    organization can only be bridged by a comprehensive umbrella strategy. This

    can be done by developing a holistic strategic framework that leverages the

    generation and understanding of demand effectiveness with supply efficiency.

    Such a framework provides a strategic anchor to prevent the supply and

    demand components of a business from drifting apart.

    The basis of such a holistic strategy framework is the integrated supply

    and demand model (Fig.-2). The model is designed around two key principles.

  • 7/31/2019 Or-Project Supply Chain

    7/33

    First, in the present scenario where vertically integrated supply chains (VISC)

    are a rarity, if not non-existent; organizations must bring a multi-enterprise

    view to their supply chains. They must be capable of working co-operatively

    with other organizations in the chain rather than seeking to outdo them.

    Secondly, they must recognize the distinct supply and demand processes that

    must be integrated in order to gain the greatest value.

    Fig. -2 : The Integrated Demand-Supply Model

    Thus involving three key elements:

    The core process of the supply and demand chains viewed from a broadcross-enterprise vantage point rather than as discrete function. To gain the

    maximum benefits, organizations need to identify the core processes

    across the demand and supply chain, as well as exploring the impact of

    each of these processes on the different functions.

  • 7/31/2019 Or-Project Supply Chain

    8/33

    Fig. -3 : Integrating processes in the supply and demand chains

    The integrating processes that create the links between the supply anddemand chains (fig - 3). This implies that the planning processes (which

    involves development of channel strategies, planning of manufacturing,

    inventory, distribution and transportation, demand planning and

    forecasting; and marketing and promotional planning) and service

    processes (which includes functions such as credit, order management,

    load planning, billing and collection, etc.) must be integrated. This

    integration must be done across the boundaries of the enterprises. If each

    participating organization in the chain formulates its own plans on the

    basis of its own private information, then there is no way to integrate the

    supply and demand chain processes that they share.

  • 7/31/2019 Or-Project Supply Chain

    9/33

    The supporting information technology (IT) infrastructure that makes suchintegration possible. While information technology is needed to handle

    routine transactions in an efficient manner, it can also play the a critical

    role in facilitating the timely sharing of planning, production and

    purchasing information; capturing and analyzing production, distribution

    and sales data at new levels of detail and complexity. Information

    technology provides an integrating tools that makes it possible to convert

    data into meaningful pictures of business processes, markets and

    consumers that are needed to feed company strategies in order to develop

    competitive advantage.

    On the administrative side, such elements as flow path economics, which

    help organizations understand the real drivers of costs, and new performance

    and measurement standards that align functions in accordance with total

    process goals that are critical to achieving integration.

  • 7/31/2019 Or-Project Supply Chain

    10/33

    SCM Framework

    A framework to understand the various issues involved in SCM is provided

    by the pyramid structure for the SCM paradigm The pyramid allows issues to

    be analyzed on four levels:

    Strategic: On the strategic, level it is important to know how SCM cancontribute to the enterprises basic value proposition to the customers.

    Important questions that are addressed at this level include: What are the

    basic and distinctive service needs of the customers? What can SCM do to

    meet these needs? Can the SCM capabilities be used to provide unique

    services to the customers? Etc.

    Structural: After the strategic issues are dealt with, the next levelquestion(s) that should be asked are: Should the organization market

    directly or should it use distributors or other intermediaries to reach the

    customers? What should the SCM network look like? What products should

    be sourced from which manufacturing locations? How many warehouses

    should the company have and where should they be located? What is the

    mission of each facility (full stocking, fast moving items only, cross-docking

    etc.)? etc.

    Functional: This is the level where operational details are decided upon.Functional excellence requires that the optimal operating practices for

    transportation management, warehouse operations, and materials

    management (which includes forecasting, inventory management,

    production scheduling, and purchasing) are designed. These strategies

    should keep in view the trade-offs that may need to be made for the overall

    efficiency of the system. Achieving functional excellence also entails

  • 7/31/2019 Or-Project Supply Chain

    11/33

    development of a process-oriented perspective on replenishment and

    order fulfillment so that all activities involved in these functions can be

    well integrated.

    Implementation: Without successful implementation, the development ofSCM strategies and plans is meaningless. Of particular importance are the

    organizational and information systems issues. Organizational issues

    centers on the overall structure, individual roles and responsibilities, and

    measurement systems needed to build an integrated operation.

    Information systems are enablers for supply chain management

    operations and therefore must be carefully designed to support the SCM

    strategy. Supply chain managers must consider their information needs

    relative to decision support tools, application softwares, data capture, and

    the systems overall structure.

    It is important to note that the decisions made within the SCM strategy

    pyramid are interdependent. That is, it must be understood what capabilities

    and limitations affect the functional and implementation decisions and

    consider those factors while developing a supply chain management strategy

    and structure.

    The SCM models used in practice lie in a continuum between two extreme

    models: on one end of the spectrum lies the vertically integrated supply chain

    model in which the organization has direct control over each and every

    component of the supply chain, while on the other end of the spectrum lies the

    horizontally diversified supply chain model (ideally) in which the number of

    participant is as large as the number of distinct parts of the supply chain. In a

  • 7/31/2019 Or-Project Supply Chain

    12/33

    vertically integrated supply chain system, the organization can control every

    component of the chain and can make various changes to the system to

    optimize the chain very easily. But in a horizontally diversified supply chain

    the tendency will be to optimize only the functions that the organization is

    involved in, thus conscious efforts must be made by the various participants in

    the supply chain for the integration of their respective components in the

    supply chain. If an organization can be identified as the major/dominant

    partner in the supply chain, then this organization has to take an initiative in

    seeking the co-operation of the other participants in the supply chain.

    The type and structure of the supply chain that is established depends on

    many factors, some of the major factors are:

    Geographical: If the supply chain is stretched across the globe then it maynot be possible to incorporate some of the principles of lean production

    like JIT delivery, flexible manufacturing, and co-ordination among

    suppliers and customers. It can lead to uncertain transportation schedules,

    unpredictable lead time and may need larger inventory carriage.

    Cultural:The difference in the culture of the participants in the chain(the difference can be due to geographical factors or corporate practices)

    can lead to friction and distrust. This may hamper the development of close

    ties.

    Government Legislation: The laws of the country may prohibit thesharing of information about some facet of the supply chain and thus, may

    lead to a restrictive participation by one or more participant in the supply

    chain.

  • 7/31/2019 Or-Project Supply Chain

    13/33

    Time: Just as among individuals, organizations require time before trustcan be built up. The first phase in any relationship is manifest as

    confrontation that essentially means that participants in the chain try to

    win at the cost of other participants. And, the last phase is exemplified by

    total trust and working together of organizations. The information sharing

    behavior in the first phase is almost zero, while in the integrated

    relationship the information sharing is mutual and free about the common

    concerns. In between the two phases lies a continuum of phases.

  • 7/31/2019 Or-Project Supply Chain

    14/33

    Demand Forecasting

    What is a demand forecast?

    Demand forecasting is the activity of estimating the quantity of a

    product or service that consumers will purchase. Demand forecasting involves

    techniques including both informal methods, such as educated guesses, and

    quantitative methods, such as the use of historical sales data or current data

    from test markets. Demand forecasting may be used in

    making pricing decisions, in assessing future capacity requirements, or in

    making decisions on whether to enter a new market.

    A demand forecast is the prediction of what will happen to your

    company's existing product sales. It would be best to determine the demand

    forecast using a multi-functional approach. The inputs from sales and

    marketing, finance, and production should be considered. The final demand

    forecast is the consensus of all participating managers. You may also want to

    put up a Sales and Operations Planning group composed of representativesfrom the different departments that will be tasked to prepare the demand

    forecast.

    Determination of the demand forecasts is done through the following steps:

    Determine the use of the forecast

    Select the items to be forecast

    Determine the time horizon of the forecast

    Select the forecasting model(s)

    Gather the data

  • 7/31/2019 Or-Project Supply Chain

    15/33

    Make the forecast

    Validate and implement results

    Objectives of Demand Forecasting

    1.Helping for continuous production

    2.Regular supply of commodities

    3.Formulation of price policy

    4.Arrangement of finance

    5.Labor requirement

    Factors Involved In demand Forecasting

    1.Time period

    2.Levels of forecasting-- International level-- Macro level-- Industry level--

    Firm level

    3.Purpose - General or Specific

    4.Methods Of Forecasting

    5.Nature Of Commodity

    6.Nature Of Competition

    Need for Demand Forecasting

    The significance of demand or sales forecasting in the context of

    business policy decisions can hardly be overemphasized. Sales constitute the

  • 7/31/2019 Or-Project Supply Chain

    16/33

    primary source of revenue for the corporate unit and reduction for sales gives

    rise to most of the costs incurred by the firm.

    Demand forecasting is essential for a firm because it must plan its

    output to meet the forecasted demand according to the quantities demanded

    and the time at which these are demanded. The forecasting demand helps a

    firm to arrange for the supplies of the necessary inputs without any wastage

    of materials and time and also helps a firm to diversify its output to stabilize

    its income overtime.

    The purpose of demand forecasting differs according to the type of

    forecasting.

    (1) The purpose of the Short term forecasting:

    It is difficult to define short run for a firm because its duration may

    differ according to the nature of the commodity. For a highly sophisticated

    automatic plant 3 months time may be considered as short run, while for

    another plant duration may extend to 6 months or one year. Time duration

    may be set for demand forecasting depending upon how frequent the

    fluctuations in demand are, short- term forecasting can be undertaken by

    affirm for the following purpose;

    Appropriate scheduling of production to avoid problems of over productionand under- production.

    Proper management of inventories Evolving suitable price strategy to maintain consistent sales Formulating a suitable sales strategy in accordance with the changing

    pattern of demand and extent of competition among the firms.

  • 7/31/2019 Or-Project Supply Chain

    17/33

    Forecasting financial requirements for the short period.(2) The purpose of long- term forecasting:

    The concept of demand forecasting is more relevant to the long-run that

    the short-run. It is comparatively easy to forecast the immediate future than

    to forecast the distant future. Fluctuations of a larger magnitude may take

    place in the distant future. In fast developing economy the duration may go up

    to 5 or 10 years, while in stagnant economy it may go up to 20 years. More

    over the time duration also depends upon the nature of the product for which

    demand forecasting is to be made. The purposes are;

    Planning for a new project, expansion and modernization of an existing unit,diversification and technological up gradation.

    Assessing long term financial needs. It takes time to raise financial resources. Arranging suitable manpower. It can help a firm to arrange for specialized

    labour force and personnel.

    Evolving a suitable strategy for changing pattern of consumption.

    Challenges Faced in Demand Forecasting

    A small retailer may not need and afford a full-fledged demand forecasting

    analysis. However, with increasing number of bigger retailers entering the

    market demand forecasting becomes feasible. Firms face a multitude of

    challenges due to the following factors:

    1. Scale of forecast (how many goods to include in the forecast?)2. sporadic demand (erratic sales for many items in the store)3. introduction of new goods

  • 7/31/2019 Or-Project Supply Chain

    18/33

    4. changing prices and promotions

    Large scale forecasting. A big retailer may have thousands of items per shop.

    Since forecasting is an important yet expensive task, the retailer can not

    forecast for all goods it sells. Though it is infeasible to manually forecast the

    demand of all the products, it is possible to use automated tools to do so. In

    most cases, quality forecasts can be obtained from the automated tool and the

    expert analysts can be employed to forecast few of the most important

    products. This reduces the burden from the humans but requires lot of

    compute power available.

    What to optimize. Total sale volumes, total revenue earned, total profits,

    maximize margin are many different objectives that a firm may use and may

    receive optimized goods in stock. Creditability of such optimization

    decisions pivots on the ability to correctly predict the sales. This is usually

    based on prior data about the same product or close substitutes. It may also

    be based upon analysis done at another location with similar buyer patterns.

    When to restock. Slow moving goods may be restocked leisurely compared

    to fast moving goods. It is important for retailers to provide the customers the

    specific goods that the customer asks of the retailer. Under stocking would

    cause unsatisfied customers who may quickly move to other stores. Over

    stacking may increase the money locked up in inventory. Hence, the retailer

    should aim at a replenishment policy by which the rack never gets empty and

    never overflows. When close substitutes are available for some products, the

  • 7/31/2019 Or-Project Supply Chain

    19/33

    retailer may compensate for a lower current stock in one good with another

    one.

    JUDGEMENTAL

    The main methods in these categories are as follows:

    Unaided Judgement:

    It is common practice to ask experts what will happen. This is a good

    procedure to use when,

    Experts are unbiased,

    Large changes are unlikely,

    Relationships are well understood by experts (e.g., demand goes up when

    Prices go down),

    Experts possess privileged information,

    Experts receive accurate and well-summarized feedback about their

    forecasts.

    Delphi:

    To forecast with Delphi the administrator should recruit between five

    and twenty suitable experts and poll them for their forecasts and reasons. The

    administrator then provides the experts with anonymous summary statisticson the forecasts, and experts reasons for their forecasts. The process is

    repeated until there is little change in forecasts between rounds - two or three

    rounds are usually sufficient. The Delphi forecast is the median or mode of the

    experts final forecasts.

  • 7/31/2019 Or-Project Supply Chain

    20/33

    Judgemental Decomposition:

    The basic idea behind judgemental decomposition is to divide the

    forecasting problem into parts that are easier to forecast than the whole. One

    then forecasts the parts individually; using methods appropriate to each part.

    Finally, the parts are combined to obtain a forecast.

    Expert Systems:

    As the name implies, expert systems are structured representations of

    the rules experts use to make predictions or diagnoses. For example, if local

    household incomes are in the bottom quartile, then do not supply premium

    brands.

    Expert systems forecasting involves identifying forecasting rules used

    by experts and rules learned from empirical research.

    Developing an expert system is expensive and so the method will only

    be of interest in situations where many forecasts of a similar kind are

    required. Expert systems are feasible where problems are sufficiently well-structured for rules to be identified.

    Simulated interaction:

    Simulated interaction is a form of role playing for predicting decisions

    by people who are interacting with others. To use simulated interaction, an

    administrator prepares a description of the target situation, describes the

    main protagonists roles, and provides a list of possible decisions. Role players

    adopt a role and read about the situation. They then improvise realistic

    interactions with the other role players until they reach a decision; for

  • 7/31/2019 Or-Project Supply Chain

    21/33

    example to sign a trial one-year exclusive distribution agreement. The role

    players decisions are used to make the forecast.

    Intentions and Expectations Survey:

    With intentions surveys, people are asked how they intend to behave in

    specified situations. In a similar manner, an expectations survey asks people

    how they expect to behave.

    To forecast demand using a survey of potential consumers, the

    administrator should prepare an accurate and comprehensive description of

    the product and conditions of sale. He should select a representative sample of

    the population of interest and develop questions to elicit expectations from

    respondents. Bias in responses should be assessed if possible and the data

    adjusted accordingly. The behavior of the population is forecast by

    aggregating the survey responses.

    How is demand forecast determined?

    There are two approaches to determine demand forecast (1) the

    qualitative approach, (2) the quantitative approach. The comparison of these

    two approaches is shown below:

    Description Qualitative Approach Quantitative Approach

    Applicability Used when situation is

    vague & little data exist

    (e.g., new products and

    technologies)

    Used when situation is

    stable & historical data

    exist

    (e.g. existing products,

  • 7/31/2019 Or-Project Supply Chain

    22/33

    current technology)

    Considerations Involves intuition and

    experience

    Involves mathematical

    techniques

    Techniques Jury of executive opinion

    Sales force composite

    Delphi method

    Consumer market survey

    Time series models

    Causal models

    Qualitative Forecasting Methods

    Your company may wish to try any of the qualitative forecasting

    methods below if you do not have historical data on your products' sales.

    Qualitative Method Description

    Jury of executive

    opinion

    The opinions of a small group of high-level

    managers are pooled and together they estimate

    demand. The group uses their managerial

    experience, and in some cases, combines the

    results of statistical models.

    Sales force

    composite

    Each salesperson (for example for a territorial

    coverage) is asked to project their sales. Since

    the salesperson is the one closest to the

  • 7/31/2019 Or-Project Supply Chain

    23/33

    marketplace, he has the capacity to know what

    the customer wants. These projections are then

    combined at the municipal, provincial and

    regional levels.

    Delphimethod A panel of experts is identified where an expert

    could be a decision maker, an ordinary

    employee, or an industry expert. Each of them

    will be asked individually for their estimate of

    the demand. An iterative process is conducteduntil the experts have reached a consensus.

    Consumer market

    survey

    The customers are asked about their purchasing

    plans and their projected buying behavior. A

    large number of respondents is needed here to

    be able to generalize certain results.

    Quantitative Forecasting Methods

    There are two forecasting models here (1) the time series model and

    (2) the causal model. A time series is a s et of evenly spaced numerical data

    and is obtained by observing responses at regular time periods. In the time

    series model, the forecast is based only on past values and assumes that

    factors that influence the past, the present and the future sales of your

    products will continue.

    On the other hand, t he causal model uses a mathematical technique

    known as the regression analysis that relates a dependent variable (for

  • 7/31/2019 Or-Project Supply Chain

    24/33

    example, demand) to an independent variable (for example, price,

    advertisement, etc.) in the form of a linear equation. The time series

    forecasting methods are described below:

    Time Series Forecasting

    Method

    Description

    Nave

    Approach

    Assumes that demand in the nextperiod is the same as

    demand in most recentperiod; demand pattern may

    not always be that stable

    For example:

    If July sales were 50, then Augusts sales will also be

    50

    Time Series Forecasting

    Method

    Description

    Moving

    Averages (MA)

    MA is a series of arithmetic means and is used if little

    or no trend is present in the data; provides an overall

    impression of data over time

    A simple moving average uses average demand for a

    fixed sequence of periods and is good for stable

    demand with no pronounced behavioral patterns.

    Equation:

  • 7/31/2019 Or-Project Supply Chain

    25/33

    F 4 = [D 1 + D2 + D3] / 4

    F forecast, D Demand, No. Period

    A weighted moving average adjusts the movingaverage method to reflect fluctuations more closely by

    assigning weights to the most recent data, meaning,

    that the older data is usually less important. The

    weights are based on intuition and lie between 0 and 1

    for a total of 1.0

    Equation:

    WMA 4 = (W) (D3) + (W) (D2) + (W) (D1)

    WMA Weighted moving average, W Weight, D

    Demand, No. Period

    Exponential

    Smoothing

    The exponential smoothing is an averaging method

    that reacts more strongly to recent changes in demandby assigning a smoothing constant to the most recent

    data more strongly; useful if recent changes in data are

    the results of actual change (e.g., seasonal pattern)

    instead of just random fluctuations

    F t + 1 = a D t + (1 - a ) F t

    Where

    F t + 1 = the forecast for the next period

    D t = actual demand in the present period

  • 7/31/2019 Or-Project Supply Chain

    26/33

    F t = the previously determined forecast for the

    present period

    = a weighting factor referred to as the smoothing

    constant

    Time Series

    Decomposition

    The time series decomposition adjusts the

    seasonality by multiplying the normal forecast by a

    seasonal factor

    Forecast Accuracy and Key Performance Indicators (KPIs)

    In inventory control operations, demand forecasting is usually

    performed for each stock item SKU stock keeping unit. Different metrics,

    called KPIs (key performance indicators), can be used to ensure that

    customer service remains at or above acceptable levels for each SKU. Common

    KPIs include case fill and order fill.

    To fulfill these objectives, its necessary to keep a certain level of safety

    stock . However, holding excess safety stock can lead to higher inventory

    costs, and furthermore, increases risk that some inventory will have to be

    written off during the later stages of the product lifecycle.

    If supply chain managers are interested in reducing safety stock, there

    are several methods they can use, foremost of which is demand planning.

    Increasing forecasting accuracy, then, is a primary goal in the supply chain.

    http://skylergreene.hubpages.com/hub/Demand-and-Supply-Planning-Demand-Classification-and-Paretos-Lawhttp://skylergreene.hubpages.com/hub/Demand-and-Supply-Planning-Demand-Classification-and-Paretos-Law
  • 7/31/2019 Or-Project Supply Chain

    27/33

    Forecast accuracy can be calculated using a formula called MAPE Mean

    Absolute Percent Error. The equation is as follows:

    Error % = |Actual Forecast|/Actual

    (note that |x| means the absolute value of x)

    The reason that absolute value bars are used in mean absolute percent error

    is because for statistical reasons, magnitude of error is often more important

    than the sign.

    Forecast accuracy is a metric that is inversely related to MAPE (as MAPE

    increases, FA decreases). The equation for forecast accuracy is:

    FA = 100 MAPE

    (expressed as a percentage)

    SCM Disaster

    Businesses now not only need to operate at a lower cost to compete, it

    must also develop its own core competencies to distinguish itself from

    competitors and stand out in the market. Supply chain management

    plays an important role in successful running of any business. SCM

    has allowed company to rethink their entire operation and restructure it so

    that they can focus on its core competencies and outsource processes

    that are not within the core competencies of the company.

    But the opposite effect of the SCM also comes into the view at times.

    There have been m a n y c a s e s i n t h e p a s t i n w h i c h t h e S C M

    h a v e p r o v e d t o b e a r e a s o n f o r p o o r f i n a n c i a l performance of

    the company.

  • 7/31/2019 Or-Project Supply Chain

    28/33

    SCM Disaster at Nike

    Nike Rebounds: How (and Why) Nike Recovered from Its

    Supply Chain Disaster

    Nike Inc.

    Nike Inc. is a major publicly traded sportswear and equipment

    supplier based in the United St ate s. Th e co mpa ny is

    hea dqua rtered in Bea verton , Oregon, whic h is p a rt of the

    Po rt l an d metropolitan area. It is the world's leading supplier

    of athletic shoes and apparel and a major manufacturer of sports

    equipment with revenue in excess of $18.6 billion USD in its fiscal year 2008

    (ending May 31, 2008). As of 2008, it employed more than 30,000 people

    worldwide. Nike an d Pr ec is io n Ca st pa rt s ar e

    the only F ortune 500 c omp a nies hea dqua rtered in the s ta te

    of Oregon, according to The Oregonian. The company was founded on

    January 25, 1964 as Blue Ribbon Sports by Bil l Bower man and Philip

    Knight, and officially became Nike, Inc. in 1978. The company takes its name

    from Nike, the Greek goddess of victory equipment; the company operates

    retail stores under the Nike town name. Nike sponsors many high profile

    athletes and sports teams around the world , with the highly recognized

    trademarks of "Just do it" and the Swoosh logo.

    Nikes Supply Chain: Failure and Eventual Success

    During the 1970s retailers would make their orders with Nike 9 months

    in advance before their delivery date. The orders were then sent to Nikes

    manufacturers all over the world. At the beginning this process worked well

  • 7/31/2019 Or-Project Supply Chain

    29/33

    and allowed Nike to deliver its orders on time. However, during the 1980s and

    1990s Nikes business grew dramatically and customers became more

    demanding about style, comfort and variety leading Nikes forecasting,

    manufacturing and distribution to become very complex.

    In 1999, profits dropped by 50 percent due to supply chain factors. The

    situation led to the adoption of Nikes supply chain project called NSC. The

    project attempted to improve the failing forecasting and order activities in

    Nike. However this didnt work well for Nike, so it acquired and implemented

    i2 technologies demand forecasting system at a cost of $40 million. The

    objectives of this project were to forecast over 1 million stock keeping units

    (SKUs). Algorithms were used to generate Nikes forecasts for manufacturing.

    However, later in 2000, the forecasts were found to be faulty, causing Nike to

    over manufacture some products while struggling to meet the demand for

    other products. It took Nike between 6 and 9 months to overcome its

    manufacturing problems and more than 2 years to make up for its financial

    loss.

    After analyzing its i2Technologies, Nike learned that it needed a more

    adequate training of users, more comprehensive testing for the application

    and a more careful integration of the application with other information

    systems. The review of the project found that there was too much reliance on

    forecasts generated by algorithms without using any judgment to evaluate the

    forecasts.

    By 2004, Nike had an integrated and efficient supply chain with i2

    technologies forecasting system, SAPs ERP system, and Siebels CRM systems.

    Nike spent 6 years and $800 million on the project.

  • 7/31/2019 Or-Project Supply Chain

    30/33

    Nikes 2001 Planning System Perplexity

    The companys headquarters are located in Beaverton, Oregon

    in the US. The company had a good supply chain management wherein the

    company was in a practice of never manufacturing the products. Instead

    the company used to outsource the manufacturing process directly to

    the suppliers. These suppliers were known as the contractors.

    Future program:

    It was in the year 1975 when the Nike introduced the Future Program.Under this program the Nikes global operations were broadly divided into 5

    geographic regions. This was aimed towards obtaining better operations and

    effective systems. During this era, toward the end of the 1990s the supply

    chain management seemed to be ineffective and inadequate. There

    were problems like ineffective forecasting and managing the changing trends.

    NSC Project:

    Further in the year 2000 Nike launched the New Safe

    Confinement (NSC) project. This project aimed at implementing its ERP,

    Supply Chain, & CRM Software onto a single SAP Platform. This project

    ultimately proved to be a big disaster for the Nikes operations.

    The Failure:

    I n the s p r ing of 2001, N ike b la med i2 Tec hnologies for a

    ma ss iv e sa le s- an d- earnings shortfall. Nike posted a profit of only

    $97 million that quarterat least $48 million below forecast. Nike said

    the culprit was i2's demand-forecasting and supply-chain-management

  • 7/31/2019 Or-Project Supply Chain

    31/33

    systems. The supply-chain software was supposed to reduce the

    amount of rubber; canvas and other materials that Nike needed to

    produce its shoes. It was also supposed to help make sure Nike built

    more of the shoes customers wanted and fewer of the ones they didn't.

    Instead, Nike was left with far too many of the wrong shoes and not nearly

    enough pairs of its hottest sellers.

    The Reason:

    The total cost of i2's demand-forecasting and supply-chain-management

    software was only about $40 million. The other $360 million was

    spent over five yearson customer-relationship and enterprise-planning

    software from SAP. This whole project aiming at effective forecasting proved

    to be a big SCM failure for the company. This meant huge financial losses

    for the company. The reasons for the i2s software implementation were

    finally designated over the following reasons:

    1. Third party integrator2. Inexperience of i23. Customization4. Trying to forecast too far out ahead5. Pilot test6. Lack of training,7. Inadequate information8. Problems in smooth integration9. Changing market conditions10. Complication of NSC project11. Review meetings

  • 7/31/2019 Or-Project Supply Chain

    32/33

    The Result:

    This res ulted in huge p rof i t los s for the c omp a ny.

    It ef fec te d th e co mpa ny reputation a lot. Massive sales

    and earnings shortfall were observed. Nike was left with far too many

    of the wrong shoes and not nearly enough pairs of its hottest sellers. Thus

    company understood the importance of the SCM and forecasting. Forecasting

    for the Nike was extremely important. It was important for them to

    determine the quantities. An important feature that the company

    understood regarding its SCM was that it needed to lay attention on the make

    to order rather than the make to stock policy. Company also understood

    that in a type of business that the company is in, forecasting plays an

    important role in reducing the supply time. For all this to obtain it was

    important for the company to obtain the best forecasting. Nike further

    improved its supply chain management by installing well equipped and

    competent system. Its continuous interaction with the consumers on

    the web portal proved to be the best feature. Herein the consumers

    achieve the supreme level of customization of the products. Nike also

    improved itself by proper analysis of the data and implementation. Feedback

    as in any other industry plays an important role in Nike today. Nike

    obtains continuous feedback from the suppliers and the consumers.

  • 7/31/2019 Or-Project Supply Chain

    33/33

    Conclusion:

    Hence supply chain management for any company plays an important

    role in successful running of a company. The reverse effect of the SCM

    can also be experienced if the implementation of the SCM processes is

    not done in the best way. Implementation is a complex procedure and

    it must be tackled in the best way. Evaluating pros and c ons of any

    project beforehand is also equally important. A pilot project can

    be turn around the fate of any business if handled correctly

    Bibliography

    Nike Report:- http://www.scdigest.com/assets/reps/SCDigest_Top-11-SupplyChainDisasters.pdf