Search results

The purpose of this paper is to analyze data from the first-ever national-level study of informal work in the USA to test two prominent points of focus in the literature: how participation in informal work relates to social embeddedness and formal labor supply. This paper also provides a comparative test of the factors associated with exchange-based informal work (i.e. money/barter) vs self-provisioning activities.

The study draws on data from a national-level household telephone survey and uses descriptive statistics and logistic regression models.

The data show that participation in the informal economy is widespread in the USA. Consistent with theory, it is found that measures of social embeddedness and formal labor supply are much more salient for predicting participation in informal work for money/barter compared to self-provisioning.

Drawing on unique data from the first national-level household survey of informal work in the USA, this study provides generalizable support for the contention that the informal sector stands as a persistent structural feature in modern society. The results build on the wealth of information produced by qualitative case studies examining informal economic activity as well as a smaller number of regionally targeted surveys to provide important theoretical insights.

At the inception of the Journal of Humanitarian Logistics and Supply Chain Management (JHLSCM), logistics coordination was identified as important, both in practice and research, but few studies on the topic had been published. Ten years later, many, if not most, papers in the journal mention the topic. So the picture has changed, but to what extent? This paper discusses how coordination research has followed humanitarian logistics practice and vice versa.

The point of departure in the present article is the most salient topic from the study’s original papers (Jahre et al., 2009; Jahre and Jensen, 2010). The authors discuss how these topics have developed in research and practice. A recent literature review (Grange et al., 2020) enables us to pick relevant papers from JHLSCM and supplement them with more recent ones. The authors complement this approach with updated data on the cluster system, particularly the logistics cluster, to add insights from the empirical domain.

In practice, the cluster concept has developed from coordination within clusters in response to the inclusion of inter-cluster coordination in preparedness, and more recently a focus on localized preparedness. However, JHLSCM research does not appear to have kept pace, with a few notable exceptions. The majority of its papers still focus on response. To the extent that preparedness is covered, it is primarily done so at the global level.

The authors use a framework to discuss humanitarian logistics coordination research and identify important gaps. Based on developments in practice, the study’s key contribution is a revised model with suggestions for further research.

The purpose of this paper is to improve the understanding of the role of humanitarian cluster leads through applying lessons from the fourth‐party logistics (4PL) literature.

The primary data for this paper are based on an extensive case study of coordination mechanisms in humanitarian logistics covering specifically the UNJLC (United Nations Joint Logistics Centre) and the Logistics Cluster. In total, 37 semi‐structured interviews were conducted, together with site visits and review of official documentation.

The paper finds that the 4PL concept provides a partial match for the cluster leads with important lessons from the 4PL literature. In particular, lessons are related to selectivity of central participants for the cluster, and the need to develop relationship management skills.

The paper shows some clear areas where lessons from the 4PL literature are highly relevant to the logistics cluster lead. Some of these implications can also be applied to the other clusters, but further concepts should be developed for the cluster system as a whole.

The analysis shows that cluster leads should think of themselves more as facilitators rather than channel captains.

The tasks for the humanitarian cluster leads have been outlined in some detail, but the ways to accomplish them and how they should operate in relation to other actors in the field has been less clear. By using the 4PL concept the paper demonstrates a number of lessons that are relevant to the logistics cluster lead in particular.

Over the last decade, multiple initiatives have been undertaken to learn how to capture the carbon footprint of a supply chain at a product level. The purpose of this paper is to focus on the process of standardization to secure consistency of product carbon footprinting (PCF) and to outline how the current developments in PCF support the need for a standardized method to measure and report environmental performance in supply chains.

This paper is based on a literature review and a review of international standards for PCF which brings knowledge of PCF to the existing literature of green supply chain management.

The multiple initiatives for standardization each improve the understanding of standardized methods of conducting PCF. At the same time, however, important differences exist between the standards in terms of the modelling framework to be used when conducting a PCF, and a paradox exists concerning methods for securing future standardization of PCF.

Standards for evaluating emission of greenhouse gases (GHGs) in supply chains are evaluated without consideration of other environmental impacts. In addition, the research only compares international standards, thereby excluding national initiatives.

Standardization efforts can be expected to shape the future practice of measuring emission of GHGs in companies and supply chains which provides a framework for reducing impacts.

Papers that outline the standardization process for PCF have been examined, but this paper adds value by categorizing the field, outlining the latest standards, and by being the first paper to compare standards for PCF on selected criteria and identify gaps.

In the field of humanitarianism, cluster thinking has been suggested as a solution to the lack of coordinated disaster response. Clusters for diverse functions, including sheltering, logistics and water and sanitation, can be viewed as an effort to achieve functional coordination. The purpose of this paper is to contribute to a greater understanding of the potential of cluster concepts using supply chain coordination and inter‐cluster coordination. The focus is on the conceptual level rather than on specific means of coordination.

The cluster concept in humanitarian relief, along with some key empirical issues, is based on a case study. The concept is then compared to the literature on clusters and coordination in order to develop a theoretical framework with propositions on the tradeoffs between different types of coordination.

The results provide important reflections on one of the major trends in contemporary development of humanitarian logistics. This paper shows that there is a tradeoff between different types of coordination, with horizontal coordination inside cluster drawing attention away from important issues of the supply chain as well as the need to coordinate among the clusters.

There is a need for more in‐depth case studies of experiences with clusters in various operations. Various perspectives should be taken into account, including the field, responding agencies, beneficiaries, donors, military and commercial service providers, both during and between disasters.

The paper presents the tradeoffs between different types of coordination, in which basic aims such as standardisation through functional coordination, must be balanced with cross‐functional and vertical coordination in order to more successfully serve the users' composite needs.

The focus on possible trade‐offs between different types of coordination is an important complement to the literature, which often assumes simultaneous high degrees of horizontal and vertical coordination.

There is a need for theory development within the field of humanitarian logistics to understand logistics needs in different stages of a crisis and how to meet these. This paper aims to discuss three dimensions identified in logistics and organization theories and how they relate to three different cases of humanitarian logistics operations – the regional concept of the International Federation of Red Cross Red Crescent Societies, the development and working of the United Nations Joint Logistics Centre and coordination challenges of military logistics in UN mandated peacekeeping operations. The purpose is to build a framework to be used in further studies.

A framework for the study of humanitarian logistics along three dimensions is developed, followed by a discussion of the chosen cases in relation to these dimensions. The framework will be used as basis for the case studies to be undertaken for the purpose of understanding and identification of new questions and needs for other or revised concepts from theory.

The paper shows the relevance of a wide literature to the issues pertinent to humanitarian logistics. There is considerable promise in extant literature on logistics, SCM and coordination, but this needs to be confronted with the particular issues seen in the humanitarian logistics setting to achieve further theory development.

The major contribution of the paper lies in its breadth of theoretical perspectives presented and combined in a preliminary theoretical framework. This is applied more specifically in the three case studies described in the paper.

Given volatile markets, the ability to quickly act is fundamental for companies – in regard to the internal production and to external supply flows in the value network. Related flexibility and adaptability concepts are vague and contradictory. Managerial methods either imply a generic application level or a narrow focus. Thus, the purpose of this paper is to develop a three-step approach to facilitate a well-directed flexibility and adaptability design within a build-to-order context: context-specific operationalization, thorough segmentation using advanced logistic criteria and purposeful deduction of improvement means.

Based on a thorough literature review, a procedural approach is developed and applied within two rigorously conducted company-cases. A triangulation setting is used within the empirical analysis.

A company's capability to act appropriately, quickly and economically in the face of volatility can be remarkably advanced through context-specific analysis and well-reasoned segmentation. A respective approach to enhance flexibility and adaptability has to regard rational, emotional and cultural aspects.

The literature review is selective, not exhaustive. Two case studies cannot cover all thinkable aspects.

The findings illustrate how flexibility and adaptability measures can be designed purposefully within a company-specific approach. Two potential directions of impact – uncertainty reduction and flexibility/adaptability improvement – are consolidated into significant criteria and applied to thoroughly classified areas in a feasible way.

Current approaches do not apply a company-specific operationalization approach and are not based on segmentation or are using limited criteria. Besides, most approaches are neither designed for quick operationalization nor continuous application.

Wireless sensor network (WSN) technologies are now available to implement real time temperature monitoring systems in food supply chains. The aim of this paper is to examine different types of methods and criteria to establish alerts in decision support systems in perishable food supply chains.

Logistic and temperature mapping was performed in cod supply chains to obtain data to establish criteria for temperature alerts. Data were collected for both ambient temperature and temperature of products packed in expanded polystyrene boxes.

Alerts based on single criterion for ambient temperature resulted in false alerts when compared to criteria for product temperature. More complex methods that took into account both temperature abuse and the severity of the abuse resulted in more relevant alerts for the chilled cod supply chain.

The research is based on mapping of cod supply chains with a limited number of iterations.

The scope of the research is the application of WSN in an actual supply chain of chilled cod transported from Iceland to Europe, which has relevance in assisting management decision making in the supply chain to prevent losses of quality and minimize waste.

Failure to maintain a low temperature occurs frequently at handover points where alert systems are usually not in place. The theoretical implication of this paper is the development of a conceptual framework for setting up temperature criteria for real time decision support systems in food supply chains.

Freight carriers operating in a spot-market environment are faced with uncertain future capacity demand, actual revenues, and properties of freight items. They require information about the expected future consumption of limited capacity to derive suitable request acceptance decisions. The purpose of this paper is to present a new idea to improve the handling of inaccurate information on the weight and volume of upcoming requests.

The authors start with the definition of a new mathematical optimization model as the backbone of a capacity control system. This model is embedded within a rolling-horizon decision-making process involving consecutively arriving requests. Computational simulation experiments are carried out to evaluate the applicability and efficiency of the proposed decision support system. The authors investigate how the new model contributes towards keeping the negative impacts of inadequate forecasts of the expected volume of future requests as low as possible.

In traditional application fields of capacity control (airline ticketing or hotel reservations) the physical extent of a request is always 1 (set/bed/room). In road-based freight transportation the variety of the physical extent of requests is much more complicated and complex. The major finding is that existing capacity control approaches are unable to meet the special requirements of road-haulage. Innovative capacity control features are necessary in order to cope with the higher request portfolio complexity.

This paper addresses the requirements of a capacity control system for road-based freight transportation. An innovative decision support system is evaluated. For the first time, the authors present a comprehensive quantitative simulation study dedicated to this complicated decision-making situation.