Term
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Definition
| Demand in any period that is outside the limits established by management policy. This demand may come from a new customer or from existing customers whose own demand is increasing or decreasing. Care must be taken in evaluating the nature of the demand: is it a volume change; is it a change in product mix; or is it related to the timing of the order? See: outlier. |
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Term
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Definition
| Labor, Material and associated overheadd cost that are charged against a job as it moves through the production process. |
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Term
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Definition
| Actual demand is composed of customer orders (and often allocations of items, ingredients, or raw materials to production or distribution). Actual demand nets against or “consumes” the forecast, depending upon the rules chosen over a time horizon. For example, actual demand will totally replace forecast inside the sold-out customer order backlog horizon (often called the demand time fence) but will net against the forecast outside this horizon based on the chosen forecast consumption rule. |
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Term
| advanced planning and scheduling (APS) |
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Definition
| Techniques that deal with analysis and planning of logistics and manufacturing during short, intermediate, and long-term time periods. APS describes any computer program that uses advanced mathematical algorithms or logic to perform optimization or simulation on finite capacity scheduling, sourcing, capital planning, resource planning, forecasting, demand management, and others. These techniques simultaneously consider a range of constraints and business rules to provide real-time planning and scheduling, decision support, available-to-promise, and capable-to-promise capabilities. APS often generates and evaluates multiple scenarios. Management then selects one scenario to use as the “official plan.” The five main components of APS systems are (1) demand planning, (2) production planning, (3) production scheduling, (4) distribution planning, and (5) transportation planning. |
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Term
| advanced planning system (APS) |
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Definition
| Syn: advanced planning and scheduling. |
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Term
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Definition
| An estimate of sales, often time-phased, for a grouping of products or product families produced by a facility or firm. Stated in terms of units, dollars, or both, the aggregate forecast is used for sales and production planning (or for sales and operations planning) purposes. See: product group forecast. |
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Term
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Definition
| A process to develop tactical plans to support the organization’s business plan. Aggregate planning usually includes the development, analysis, and maintenance of plans for total sales, total production, targeted inventory, and targeted customer backlog for families of products. The production plan is the result of the aggregate planning process. Two approaches to aggregate planning exist: (1) production planning and (2) sales and operations planning. See: production planning, sales and operations planning, sales plan. |
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Term
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Definition
Syn: smoothing constant.
smoothing constant-In exponential smoothing, the weighting factor that is applied to the most recent demand, observation, or error. In this case, the error is defined as the difference between actual demand and the forecast for the most recent period. The weighting factor is represented by the symbol α. Theoretically, the range of α is 0.0 to 1. Syn: alpha factor, smoothing factor. |
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Term
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Definition
| A standard succession of values of demand-over-time data used in forecasting seasonal items. This series of factors is usually based on the relative level of demand during the corresponding period of previous years. The average value of the base series over a seasonal cycle will be 1.0. A figure higher than 1.0 indicates that the demand for that period is more than the average; a figure less than 1.0 indicates less than the average. For forecasting purposes, the base series is superimposed upon the average demand and trend in demand for the item in question. Syn: base index. See: seasonal index, seasonality. |
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Term
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Definition
| Comparing a company’s costs, products, and services to that of a company thought to have superior performance. The benchmark target is often a competitor but is not always a firm in the same industry. Seven types of benchmarking have been cited: (1) competitive benchmarking, (2) financial benchmarking, (3) functional benchmarking, (4) performance benchmarking, (5) process benchmarking, (6) product benchmarking, and (7) strategic benchmarking. See: competitive benchmarking, financial benchmarking, functional benchmarking, performance benchmarking, process benchmarking, product benchmarking, strategic benchmarking. |
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Term
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Definition
Syn: distribution network structure
| The planned channels of inventory disbursement from one or more sources to field warehouses and ultimately to the customer. There may be one or more levels in the disbursement system. Syn: bill of distribution. |
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Term
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Definition
| A listing of the required capacity and key resources needed to manufacture one unit of a selected item or family. Rough-cut capacity planning uses these bills to calculate the approximate capacity requirements of the master production schedule. Resource planning may use a form of this bill. Syn: bill of capacity. See: bill of labor, capacity planning using overall factors, product load profile, resource profile, rough-cut capacity planning, routing. |
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Term
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Definition
| Planning for resource requirements by starting at the bottom of the bill of material or services, estimating the resources required to produce each product or service, and then adding the resources up. |
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Term
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Definition
| An MRP, DRP, or other time-phased system in which all time-phased data are accumulated into time periods called buckets. If the period of accumulation is one week, then the system is said to have weekly buckets. |
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Term
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Definition
| An MRP, DRP, or other time-phased system in which all time-phased data are processed, stored, and usually displayed using dated records rather than defined time periods (buckets). |
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Term
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Definition
| A material of value produced as a residual of or incidental to the production process. The ratio of by-product to primary product is usually predictable. By-products may be recycled, sold as-is, or used for other purposes. See: co-product. |
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Term
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Definition
| The process of committing orders against available capacity as well as inventory. This process may involve multiple manufacturing or distribution sites. Capable-to-promise is used to determine when a new or unscheduled customer order can be delivered. Capable-to-promise employs a finite-scheduling model of the manufacturing system to determine when an item can be delivered. It includes any constraints that might restrict the production, such as availability of resources, lead times for raw materials or purchased parts, and requirements for lower-level components or subassemblies. The resulting delivery date takes into consideration production capacity, the current manufacturing environment, and future order commitments. The objective is to reduce the time spent by production planners in expediting orders and adjusting plans because of inaccurate delivery-date promises. |
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