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1 – 10 of over 144000Martin Steinrücke and Michael Jahr
The purpose of this paper is to focus on the medium‐term planning problem in supply chain networks. Based on a literature review, a comprehensive analytical planning model for the…
Abstract
Purpose
The purpose of this paper is to focus on the medium‐term planning problem in supply chain networks. Based on a literature review, a comprehensive analytical planning model for the three echelon tactical planning problem in supply chain networks is developed which is applicable in a hierarchical planning frame.
Design/methodology/approach
The approach used was mathematical mixed integer programming to model three echelon production‐distribution networks embedded in the supply chain planning matrix frame. Application of the model in a multi‐site planning process based on a case study from the industrial transformer supply chain was also undertaken.
Findings
Integrated multi‐period medium‐term planning with customer oriented single sourcing is an efficient method to implement mathematical optimal solutions in practice as it provides comprehensive tactical plans and network designs. These can be used for scenario analysis in a coordination process with independent supply chain partners.
Research limitations/implications
The implementation of a mathematical optimal plan in a complex business network structure requires a big‐bucket model solution to grant the plan's stability via sufficient time buffers.
Originality/value
The paper displays development of a multi‐period three echelon tactical production‐distribution‐transportation model with different capacities, transportation modes, product types and single sourcing decisions.
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Elvira Kaneberg, Susanne Hertz and Leif-Magnus Jensen
The purpose of this paper is to understand the needs of the supply-chain (SC) network when coping with permanent and temporary demands, this paper analyzes the Swedish emergency…
Abstract
Purpose
The purpose of this paper is to understand the needs of the supply-chain (SC) network when coping with permanent and temporary demands, this paper analyzes the Swedish emergency preparedness SC network. This network comprises planning procedures and resources, as well as numerous organizations and other participants in civil society that take part in the system to cope with threats and ongoing crises. Planning constitutes a critical infrastructure because the system must develop the ability to shift SC functions from permanent to temporary networks in ongoing crises and war.
Design/methodology/approach
A research study is performed based on data gathered by three qualitative methods concerning the SC network of emergency preparedness planning.
Findings
This study demonstrates the relevance of a wide empirical field challenging several theoretical perspectives of the SC network in preparedness planning and the shift to ongoing crises. Further research targeting key capabilities is needed to further improve understanding of the challenges for developed countries in managing potential threats and crises.
Originality/value
Actors taking part in the preparedness system have found it challenging to coordinate. Due, in part, to the lack of a common threat profile, key capabilities remain outside preparedness planning, e.g., military, commercial and voluntary actors as well as unclear and inconsistent regulations. Thus, building the SC network demonstrates the need to target the military, the voluntary and commercial sectors and their ability to develop the networks in preparedness planning. In a reformed system, all actors must strengthen civil defense in an all-hazard approach, which in planning encompasses the entire threat scale, demonstrating key functions and the ability to shift to temporary networks responding to ongoing crises, including war.
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Jukka Lassila, Anna Tanskanen, Juha Lohjala and Jarmo Partanen
Based on literature and an empirical case, the purpose of this paper is to present a framework for decision‐making in utilities where unbundling considerations are taking place…
Abstract
Purpose
Based on literature and an empirical case, the purpose of this paper is to present a framework for decision‐making in utilities where unbundling considerations are taking place. The paper analyses the implications of splitting long‐term network planning activity from the organization responsible for short‐term network operation activities.
Design/methodology/approach
The proposed framework includes an analysis of impacts of external forces, set‐up of common targets and performance models, and alignment of responsibilities in the new organization. The empirical results and validation of the proposed framework is performed by an electric utility, where legal unbundling of activities has taken place; the study includes expert interviews and theoretical analysis.
Findings
Colliding interests in the new business model can be avoided if economic and technical targets are mainly set by the regulator for both network development and operation activities.
Research limitations/implications
The results are based on internal re‐organization; a complementary study on re‐organizing network business activities to an external service provider could give information about the generalizability of the findings.
Practical implications
Application of the proposed framework for decision‐making and lessons learned can support electric utilities when planning for unbundling and strategic target‐setting in the unbundled business model.
Originality/value
The study presents experiences of re‐organized network business activities in a pioneering market area with a long experience of outsourcing. The detailed analysis of internal re‐organization within one electric utility can facilitate further restructuring phases.
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Patrick Finnegan, Robert D. Galliers and Philip Powell
Previous research has highlighted the need to examine the appropriateness of existing information systems methods in the context of electronic business environments. This paper…
Abstract
Previous research has highlighted the need to examine the appropriateness of existing information systems methods in the context of electronic business environments. This paper argues for a re‐examination of the suitability of current planning practices in light of the complexity of developing electronic business systems. In particular, the paper illustrates that planning and developing business‐to‐business electronic trading systems (ETS) is fraught with difficulties associated with the priorities and power of individual actors in participant organisations. The authors discuss triple loop learning (TLL), an approach that deals with diverse requirements and power issues, and argue that it may assist in overcoming some of the problems identified. The study aims to analyse the theoretical usefulness of the concepts of triple loop learning in the context of planning inter‐organisational ETS. Using the data gathered from case studies of three inter‐organisational networks, the authors argue that approaches associated with TLL can offer insight into managing inter‐organisational systems complexities, and can thereby enhance planning methods for ETS.
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Mikael Hilmersson, Martin Johanson, Heléne Lundberg and Stylianos Papaioannou
Few researchers and even fewer practitioners would deny that serendipitous events play a central role in the growth process of firms. However, most international marketing models…
Abstract
Purpose
Few researchers and even fewer practitioners would deny that serendipitous events play a central role in the growth process of firms. However, most international marketing models ignore the role of serendipity in the opportunity discovery process. The authors provide a nuanced view on international opportunities by developing the role of serendipitous opportunities in the foreign market entry process. The authors develop a model integrating the notions of serendipity, entrepreneurial logic, experiential knowledge and network knowledge redundancy. From the study’s model, the authors condense three sets of hypotheses on the relationships among experiential knowledge and entry strategy, network knowledge redundancy, entry strategy and serendipity.
Design/methodology/approach
The authors confront the study’s hypotheses with data collected on-site at 168 Swedish firms covering 234 opportunities, and to test the hypotheses, the authors ran ordinary least squares (OLS) regression tests in three steps.
Findings
The results of the study’s analysis reveal that experiential knowledge and network knowledge redundancy both lead to a logic based on rigid planning and systematic search, which in turn reduces the likelihood that serendipitous opportunities will be realized in the foreign market entry process.
Originality/value
This is the first study that develops a measure of opportunities that are the outcome of serendipitous events. In addition, the authors integrate network and learning theories and internationalization theory by establishing antecedents to, and outcomes of, the entry strategy.
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With the urbanization development in China, natural ecological environment and ecological environments in rural areas have been affected. Therefore, the characteristics and…
Abstract
With the urbanization development in China, natural ecological environment and ecological environments in rural areas have been affected. Therefore, the characteristics and classification of rural greenway were analyzed on the basis of eco economic model theory, the resources of ecological, cultural, recreational and industrial greenway planning were evaluated, and the structure characteristics of rural greenway network are analyzed. A mathematical model of space superposition analysis is constructed. Taking SunYea town of Feixian county in Shandong as the object, starting from the green road network space, greenway system, service facilities, transfer system and identification system and other aspects, the construction of the rural greenway was carefully planned. Practice has proved that rural greenway planning research has improved the scientific nature of the allocation of resources, and has a certain exemplary role for the construction of rural greenway network in similar areas.
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Kemal Subulan and Adil Baykasoğlu
The purpose of this study is to develop a holistic optimization model for an integrated sustainable fleet planning and closed-loop supply chain (CLSC) network design problem under…
Abstract
Purpose
The purpose of this study is to develop a holistic optimization model for an integrated sustainable fleet planning and closed-loop supply chain (CLSC) network design problem under uncertainty.
Design/methodology/approach
A novel mixed-integer programming model that is able to consider interactions between vehicle fleet planning and CLSC network design problems is first developed. Uncertainties of the product demand and return fractions of the end-of-life products are handled by a chance-constrained stochastic program. Several Pareto optimal solutions are generated for the conflicting sustainability objectives via compromise and fuzzy goal programming (FGP) approaches.
Findings
The proposed model is tested on a real-life lead/acid battery recovery system. By using the proposed model, sustainable fleet plans that provide a smaller fleet size, fewer empty vehicle repositions, minimal CO2 emissions, maximal vehicle safety ratings and minimal injury/illness incidence rate of transport accidents are generated. Furthermore, an environmentally and socially conscious CLSC network with maximal job creation in the less developed regions, minimal lost days resulting from the work's damages during manufacturing/recycling operations and maximal collection/recovery of end-of-life products is also designed.
Originality/value
Unlike the classical network design models, vehicle fleet planning decisions such as fleet sizing/composition, fleet assignment, vehicle inventory control, empty repositioning, etc. are also considered while designing a sustainable CLSC network. In addition to sustainability indicators in the network design, sustainability factors in fleet management are also handled. To the best of the authors' knowledge, there is no similar paper in the literature that proposes such a holistic optimization model for integrated sustainable fleet planning and CLSC network design.
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Jukka Lassila, Tero Kaipia, Juha Haakana and Jarmo Partanen
The purpose of this paper is to establish a methodological framework to address key issues in electricity distribution network development. The paper defines subtasks in the…
Abstract
Purpose
The purpose of this paper is to establish a methodological framework to address key issues in electricity distribution network development. The paper defines subtasks in the strategy process and presents key elements in the strategy work and long‐term network planning. The results are illustrated by a case network.
Design/methodology/approach
The paper describes the methodology for cost and reliability analyses in the strategy work. The focus is on techno‐economic feasibility of certain network development technologies in the network strategy and the surveys are linked to economic regulation, specifically to reliability of supply and allowed return. The study addresses the stages of strategic decision making and compilation of investment strategies.
Findings
The strategic planning concept and methods are applicable in practice; the results have proven valuable in the long‐term business development and in discussions with the company owners. Outage costs are an essential element in the economic regulation of the business, reliability being a key driver in network planning.
Research limitations/implications
There is no universal solution to strategic decision making, but each development task is highly case specific. This is due to diverging operating environments and targets set by the company owners; these issues strongly influence the strategy process.
Practical implications
The work illustrates strategic planning in an actual distribution company and shows how the methodology can be applied to the strategic network development. Nevertheless, the results cannot be generalised as such, but each network has to be considered individually.
Originality/value
The proposed concept can be applied to the long‐term development of distribution networks. The results are internationally applicable, yet diverging regulatory models call for specific methodology in each country.
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Huiyuan Zhao, Yuxing Mao and Tao Cheng
Application environments of wireless sensor networks (WSNs) include heterogeneous nodes with different packet sizes, transmission abilities and tolerable delay times. This study…
Abstract
Purpose
Application environments of wireless sensor networks (WSNs) include heterogeneous nodes with different packet sizes, transmission abilities and tolerable delay times. This study aims to design a reasonable network topology and transmission timing for these heterogeneous nodes to improve the quality of service (QoS) of networks.
Design/methodology/approach
In this paper, the authors treat node urgency and data packets as the basis of network clustering and to extend the network lifetime. The flow, energy consumption and residual energy of a node are included in the cluster head election. We also propose a delay evaluation function.
Findings
All the nodes in the network are guaranteed to transmit to the sink nodes efficiently by planning the transmission order in each cluster.
Originality/value
The simulation results show that the proposed method can balance node urgency and data packets path planning, which not only extends the lifetime of the network but also decreases network delay and improves the overall efficiency.
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Ian Grant, Charlotte McLeod and Eleanor Shaw
The aim of this paper is to explore the tensions and basis for conflict within relationships that embed and connect networked companies involved in the planning of advertising…
Abstract
Purpose
The aim of this paper is to explore the tensions and basis for conflict within relationships that embed and connect networked companies involved in the planning of advertising, with broader relevance for professional service organizations.
Design/methodology/approach
Framed within a social network perspective, this interpretive study draws on 22 in‐depth interviews to discuss the emergence and consequences of conflict within relationships shared by advertising creatives, account managers, researchers and media planners located in Scotland.
Findings
The paper identifies four dominant themes which contribute toward relational conflict: the intensity of involvement in advertising planning, the emergence of role ambiguity, cultural stereotyping, and conflicts of interest.
Originality/value
The paper provides a valuable antidote to studies reliant on dyadic client‐agency perspectives. Adopting a network perspective, it recognizes the importance of the multiple, simultaneous relationships involved in advertising planning. It offers a critical perspective on advertising relationships, considering the emergence, characteristics and consequences of tension and conflict inherent. The discussion reveals ongoing struggles for control over the process of advertising planning, and considers the implications of overt and covert actions on perceptions of network trust. The paper provides a spectrum of outcomes, ranging from collaborative tension to intra‐organisational conflict. This study is most relevant to academics and managers involved in professional services.
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