Expert systems in production management: An assessment

Over the last several years expert systems (ES) have gained almost sensational interest. Within business administration, production management might be one of the most fruitful application areas for ES. There already exist a number of interesting pilot systems, and reports of research projects are beginning to appear in the literature.The main goal of this study is to identify systematically those areas in production management where an ES approach might be most promising. This is important to both researchers and practitioners because it helps pinpoint where research and development resources would be best allocated.In this article the authors provide a taxonomy for production management activities. They then combine this taxonomy with a well-known list of eight “expert tasks” to provide what they call an “applications map” to guide the discussion.After discussing existing research efforts and potential production management applications of expert systems, the authors employ a Likert scoring procedure to quantify their subjective ratings as to problem importance, potential for improved solution, and ease of development, for expert systems development efforts in a given production management decision situation.One conclusion here is that the applicability of expert systems to production management appears to be broadly based. This is particularly true for what the authors have labeled as “technological” activities. An interesting finding is the apparent lack of applicability of expert systems to inventory management. The authors found no existing system or research proposals applying expert systems to inventory management. Finally, systems that combine technological with logistical knowledge seem to be a fertile (but difficult) application area for ES.     

Data configurations in railway signalling engineering - an application of enterprise systems techniques

Railway signalling system is a safety-critical system to ensure railway safety and its development cost is huge. It is of great economic value to apply the generic signalling systems in different environments through configuration of different application data. In this paper, a new method to configure the application data completely and accurately is illustrated; in particular, a technique called automatic generation technology is introduced to automatically configure the functional logic of safety-critical systems, i.e. computer-based interlocking (CBI) system and automatic train protection (ATP) system. All of the application data are collected from the workflow among various departments through the enterprise system (ES). Some application data are represented by models employing automatic generation technology, and the functional logic is then obtained through analysis using these models. A configuration platform based on the ES is developed in which both the efficiency and accuracy of the application data configuration are significantly improved. In addition, it is capable of reducing human errors to a maximal extent.     

Manufacturing strategy implementation and cost management systems effectiveness

The fit between manufacturing strategy and the use of cost management systems that could effectively support a firm's information needs in strategic and operational decision-making is prerequisite for a firm's ability to attain desired objectives in its value chain. The primary purpose of this study is to examine the relationship between the use of just-in-time and electronic data interchange systems, as an important dimension of a firm's manufacturing strategy, and the perceptions of top financial officers about the effectiveness of cost management systems in supporting strategic and operational decision needs. The results for the research hypothesis, which was examined using a sample of 604 manufacturing organizations in the USA, provided some support for the argument that perceptions of effectiveness of a firm's CMS can be a valid indicator of how well is the CMS designed to support strategic and operational decision needs that are necessary for the implementation of a firm's manufacturing strategy.     

Social enterprise factory location and allocation model: Small scale manufacturing for East Africa

The manufacturing location decision for social enterprises that work in the context of sustainable development is rarely based on a quantitative, analytical process. As a result, decisions may be far from profit-maximizing. Location and allocation optimization models have the potential to improve decisions and thus enable such enterprises to scale up their business as well as their impact. We develop and explain a single-period single-factory model, and also a two-echelon location and allocation model, to provide enterprises with information about optimal factory locations, and with future demand allocations and capacity-changing decision information. We apply the models to a company that manufactures and distributes solar cookers in East Africa. Our results illustrate that quantitative location and allocation models can significantly affect social enterprises by improving profitability. The case study shows strong cost-reduction potential of local manufacturing in developing countries due to high transportation costs for small production volumes. We discuss this model-recommended decision by weighing it against associated opportunities and risks. This paper aims to enable and encourage social and sustainability-oriented manufacturing enterprises to apply operations research methods in their strategic factory location decision-making.     

Aligning ERP systems with companies’ real needs: an ‘Operational Model Based’ method

Enterprise Resource Planning (ERP) systems offer standard functionalities that have to be configured and customised by a specific company depending on its own requirements. A consistent alignment is therefore an essential success factor of ERP projects. To manage this alignment, an ‘Operational Model Based’ method is proposed. It is based on the design and the matching of models, and conforms to the modelling views and constructs of the ISO 19439 and 19440 enterprise-modelling standards. It is characterised by: (1) a predefined design and matching order of the models; (2) the formalisation, in terms of modelling constructs, of alignment and misalignment situations; and (3) their association with a set of decisions in order to mitigate the misalignment risk. Thus, a comprehensive understanding of the alignment management during ERP projects is given. Unlike existing methods, this one includes decisions related to the organisational changes an ERP system can induce, as well as criteria on which the best decision can be based. In this way, it provides effective support and guidance to companies implementing ERP systems, as the alignment process is detailed and structured. The method is applied on the ERP project of a Small and Medium Enterprise, showing that it can be used even in contexts where the ERP project expertise level is low.     

Enterprise resource planning systems and its implications for operations function

Over the last decade, our world has changed dramatically due to the growing phenomenon of globalization and revolution in information technology. There is tremendous demand on companies to lower costs, enlarge product assortment, improve product quality, and provide reliable delivery dates through effective and efficient coordination of production and distribution activities. To achieve these conflicting goals, companies must constantly re-engineer or change their business practices and employ information systems.In 1990s, Enterprise Resource Planning (ERP) systems have emerged as an enabling technology, which integrates various functional (operations, marketing, finance) information systems into a seamless suite of business applications across the company and thereby, allowed for streamlined processing of business data and cross-functional integration. Thus, ERP systems provide an enticing solution to managers who have struggles with incompatible information systems and inconsistent operations policies. However, successful implementation of ERP systems requires active participation from senior-level managers from various functional areas so as to delineate its impact on the business level as well as functional level strategies.In this paper, we have endeavored to provide operations managers a brief overview of ERP systems and highlight its implications for operations function. Specifically, the objective of this paper is to give a broad based overview of enterprise resource planning systems. Using SAP R/3 as an example system, we discuss how an ERP system can assist in enhancing strengthening business strategy and making consistent operations decisions: process design, production planning and scheduling, inventory management, quality management, human resource management.     

Supplier selection or collaboration? Determining factors of performance improvement when outsourcing manufacturing

An empirical study was designed to determine factors of performance improvement when outsourcing manufacturing. Findings from a survey of 136 manufacturing plants in Sweden show that most of them achieve their outsourcing motives, but not without trade-offs. Factors of performance improvements such as economies of scale or operations in low-cost countries can improve one performance dimension, such as product cost, yet negatively impact volume flexibility, speed or product innovation. The results show part characteristics and supplier operating capabilities are more important than supplier relationship strategies when outsourcing manufacturing, meaning that supplier selection trumps supplier collaboration in the make-or-buy decision.     

In search of demanded competencies: designing superior compensation systems

Employees' competencies are decisive components in a firm's competitiveness. Accordingly, the purpose of this paper is to assess whether differences in strategy influence employees' competencies and how the design of compensation systems may best take into account the competencies required by a firm. An analysis was conducted on a sample of manufacturing firms using structural equation models. The findings support the existence of generic competencies, such as results and customer orientation, which are found in both prospector and defender strategic contexts, while other competencies – such as innovation, technical expertise and adaptability – are specific to the prospector strategy. In relation to compensation, the results show that skill-based pay is more strongly associated with competencies such as innovation, technical expertise and adaptability, whereas performance-based compensation systems encourage result-based competency. Therefore, the design of a compensation system should be guided by the competencies required as part of a firm's strategy.     

Trade-offs in make-buy decisions

While the previous literature uses transaction cost economics and the resource-based view to theoretically derive the benefits of outsourcing, it has so far overlooked how these theoretical underpinnings must be used to assess trade-offs involved in make-buy decisions as well. This study investigates trade-offs in make-buy decisions for the buying firm. It takes an operations strategy perspective and links manufacturing firms’ competitive priorities to outsourcing motives and resulting capabilities. Survey data from a representative sample of 136 manufacturing plants in Sweden is subjected to regressions analysis. In contrast to earlier empirical research, this study shows that resulting capabilities of strategic outsourcing initiatives are distinct, and, furthermore, do not emerge cumulatively. This has important implications for the ongoing debate over trade-offs in the operations strategy literature. Findings are clearly in support of the trade-off model and extend current research into the theoretical domain of make-buy decisions.     

The significance of digital data systems for smart city policy

Our planet is gradually moving towards an urbanized world. Modern urban agglomerations tend to turn nowadays into advanced information hubs supporting a smart management of dynamic urban systems. The currently popular notion of ‘smart cities’ aims to provide a new perspective for sustainable and high-performance strategies of city stakeholders in our ‘urban century’. In this context, digital information technology provides a new tool for efficient and effective management and planning of urban space, inter alia in the field of transportation, environment, public facilities or advanced service provision to citizens. This paper aims to offer, first, a concise overview of the emerging opportunities of information and communication technology (ICT) for smart urban policy; digital technology in particular, appears to provide novel pathways for modern planning strategies in smart cities. Against this background, the paper sketches out the complex force field of global urbanisation phenomena and highlights the data and information needs for strategic planning of cities (using inter alia as a framework the so-called ‘urban piazza’ strategy framework). Secondly, various new decision support tools that are currently emerging and that offer a new promising scope for handling complex urban management issues (for instance, on accessibility, congestion, safety or sustainability) are briefly presented. And finally, the potential of such digital data systems for urban management and policy is concisely illustrated by means of some recent applications in the area of smartphone data systems. The paper concludes with a discussion of the challenges ahead for urban policy, inter alia by paying attention to institutional and governance aspects of ‘big digital data’ management in urban systems.     

现代企业生产经营决策支持系统构架设计

通过构建企业经营决策支持系统(DSS),对市场竞争条件下的企业产品市场需求预测、最佳产品销售价格和广告费用投入等市场促销手段运用决策、最佳产品生产组合方案及其调整决策、最佳生产物料订购批量及其供应商选择决策、拟定方案下的企业经营成本及其盈亏预算、最佳企业经营方案进行决策,才是正确进行现代企业决策的重要保证。     

Mathematical methods of optimization for multi-objective transportation systems

Transportation systems have multi-objective functions and there are multi-factor decision situations. A general mathematical optimization model for such systems is developed which has broad applications for the planning, system design and evaluation of many transportation systems. Three types of solution techniques are discussed. For multi-objective linear programs, a solution is obtained which satisfies the decision maker's preferences and optimization from the decision maker's point of view is considered. A goal programming solution technique is given when goals for the system can be defined. If this is not possible, an overall utility function is defined on the various objective functions and a concept of additive utilities is explored and a parametric programming solution is given.     

Information systems project management decision making: The influence of experience and risk propensity

Managing information systems (IS) projects is a notoriously difficult task. The project manager is a crucial player in a successful IS development project. This research examines how a project manager's prior experience and risk propensity influence his or her decision making. An experiment was conducted that showed that both experience and risk propensity have significant influence on the decisions made.     

Information systems outsourcing: Replicating an existing framework in a different cultural context

In order for any field of study to refine the promising concepts and weed out the weaker concepts it is necessary that researchers revisit earlier studies from time to time and evaluate their general applicability to new contexts. Replication is an important technique for researchers to embrace in order to achieve this goal. In this study, we test one of the frameworks of technology outsourcing developed in the West, by changing the cultural context. Following Kodak's historic outsourcing decision, technology outsourcing has assumed significant importance among researchers and practitioners. Most of the research in relation to technology outsourcing has been conducted in the Western culture (including the USA and the UK), so our goal in this study is to extend the understanding of technology outsourcing research conducted in the West to another culture-that of Korea, through replication.We focused on information systems (IS) outsourcing decision making as a case in point and found both similarities and dissimilarities in relation to the current understanding of the same. These similarities and differences in turn, reveal the distinctions between the Western and the Korean approaches toward achieving outsourcing success. The similarities are the partial preference for short-term contracts and contracting out to external vendors. However, the two cultures differed in their decision making in the way they pursue contractual completeness, whether in-house departments competes or not, design of contract to include partnership measures, criticality of tasks outsourced, familiarity with the outsourced task, postponing a few outsourcing decisions, and withholding a piece of a contract as bait. We also found “trust” and “task partitioning to gain advantage of varied expertise” to be important for achieving outsourcing success in the Korean organization. In addition, we observed that outsourcing success is achieved by maximizing reliability and relationship in the Korean context rather than by maximizing flexibility and control, as was observed in the Western context. We argue that this difference is a function of cultural diversity.     

Data center supply chain configuration design: A two-stage decision approach

Data centers are special-purpose facilities that enable customers to perform cloud based real-time online transactions and rigorous computing operations. Service levels of data center facilities are characterized by response time between query and action, which to a large extent depends on data center location and data travel distance. Another aspect of service level is resource up-time availability, which is determined by data center configuration. Data center location and configuration decisions are, therefore, of great significance to ensure uninterrupted operations in customers of manufacturing and service industries relying on cloud-based computing resources. In this study, following a grid-based location approach, we present two mixed integer linear programming models for capacitated single-source data center location-allocation problems. The first model provides optimal locations, capacities and configurations of data centers, and allocation of demands to open facilities when there is no existing facilities in the region. Our second model considers the decision problem of meeting new demand when the existing demand is met by the already opened facilities. We term these newly arrived demand as replication demand, which results either from emergence of new users of existing customers at distant locations in the future, or as a means of increasing data resilience by creating data replication as a backup. To solve the decision problem for meeting primary and replication demand optimally, we propose a two-stage decision algorithm. The algorithm provides optimal locations, capacities and configurations for new data centers, capacity addition decisions to the existing facilities and subsequent allocation of demands. Both models and solution algorithm are implemented using AMPL programming language and solved with CPLEX solver. The models are found to be scalable and capable to provide high quality solutions in reasonable time.     

THE EFFECTS OF INFORMATION TECHNOLOGY ON STRATEGIC DECISION MAKING

Information technology (IT) may be defined as computer-based technology for the storage, accessing, processing and communication of information. Many writers have suggested that the use of IT should improve strategic decisions and have developed a number of propositions about the effects of IT on strategic decision making. However, no study has yet addressed the specific effects of IT on major phases of this process. Using Mintzberg, Raisinghani and Theoret's (1976, ‘The structure of unstructured decision processes’, Administrative Science Quarterly, 21, 2, 246–75) strategic decision-making model, this study assessed the effects of IT on the major phases of the process through an intensive examination of eight decisions in four companies. the results of the study provide new information on the specific ways IT improves decision-making efficiency and effectiveness at each stage of the strategic decision process.     

Enhancing effects of manufacturing flexibility through operational absorptive capacity and operational ambidexterity

A large body of research investigates how manufacturing flexibility in uncertain environments leads to firm performance, with mixed results. The mixed findings could be due to differences across firms in terms of the capabilities to acquire, assimilate, and transform knowledge and to simultaneously pursue both the exploitation of existing operational capabilities and the exploration for new operational capabilities. Building on the literature that suggests that manufacturing flexibility mediates the relationship between environmental uncertainty and firm performance, we explore the applicability of two organizational learning contingencies to the operations environment: operational absorptive capability and operational ambidexterity. Absorptive capacity enables the recognition and assimilation of new knowledge. Ambidexterity determines whether this knowledge will be applied for both exploration and exploitation. Using a sample of 852 manufacturing firms, we find that environmental uncertainty affects firm performance directly and indirectly through manufacturing flexibility. Furthermore, both operational absorptive capacity and operational ambidexterity moderate the relationship between environmental uncertainty and manufacturing flexibility and the relationship between manufacturing flexibility and firm performance. Theoretical and practical implications are discussed.