Considering Technological Impacts When Selecting Food Suppliers: Comparing Retailers' Buying Behavior in the United States and Europe

Purpose: The research investigates the impact of emergent technologies, specifically supply-chain technology and food-production technology (i.e., genetically modified organisms [GMO]), on global food retailers' supplier decisions.

Methodology/approach: Qualitative research is conducted to examine technology-related vendor selection criteria of food retailers in 5 European countries comparing to those in the US.

Findings: Our findings show that global food retailers view supply-chain technology as a competitive advantage and is integrated as an important selection criteria; however, selection criteria differ for food-production technology between the United States and the European countries. European food retailers explicitly oppose food-production technology (GMO), while U.S. food retailers implicitly accept food-production technology. Emerging from this opposing view, global food retailers establish similar criteria for organic food (non-GMO) supplier selection: reliability, distance, consistent quality, and relationships with suppliers.

Research implications: Applying the supplier choice criteria framework (Lehmann and O'Shaughnessy 1982 Lehmann, D. R. and 'Shaughnessy, J. O. 1982. Decision criteria used in buying different categories of products. Journal of Purchasing and Materials Management, 18: 9–14.  [Google Scholar]) to further analyze organic food suppliers, we find that reliability (adaptive criterion), distance (integrative criterion), consistent quality (performance criterion), and relationships with suppliers (economic criterion) are essential, but price is not.

Practical implications: This study suggests that to sustain competitiveness in the global food market, food suppliers not only need to ensure technological compatibility in supply-chain, but also adapt to the local food-production restriction (GMO) and organic food selection criteria preferences.

Originality/value/contribution: Supply-chain technology is strategically important and is adopted by global food retailers for competitive advantage; yet, there are dramatic differences regarding the acceptance of food production technology. This research contributes to the better understanding of how technologies exert significant and strategic weight in the food supplier selection process.     

社有林可持续管理评价探讨

在介绍森林可持续管理概念与内涵的基础上,对社区林业可持续发展指标体系和综合评价研究现状进行概述,着重介绍了社有林可持续发展指标体系的研究现状及国外的成功案例。通过对国内外社有林管理的成功案例的研究,分析适合我国社有林管理的方法与途径。     

跨国采购中供应商选择三阶段理论的实证研究

跨国采购中供应商选择的核心问题是确定选择供应商时所使用的评价指标以及具体的选择过程。将跨国公司在华采购时对中国供应商考核的标准设定为8项一级指标、25项二级指标,从而构成跨国公司在华采购中对中国供应商选择的综合指标体系。在此基础上,构建跨国公司在华采购中供应商选择三阶段理论模型。实证研究发现,跨国采购中供应商选择的三阶段理论模型是有效的。     

Smith预估器在过热气温控制中的应用

针对过程控制滞后的问题,介绍Smith预估器的控制原理和应用,把一种改进的Smith预估控制器应用于发电厂过热气温控制。并利用ITAE优化准则给出了改进Smith预估控制器的参数整定方法。以达拉特发电厂#4机组过热汽温控制为例探讨Smith预估器对过热汽温控制时参数的整定方法,并对实施后的效果与常规PID控制效果进行比较和总结。     

江苏省可持续发展指标体系研究

本文在广泛综述国内外可持续发展指标体系研究成果的基础上,结合江苏省社会、经济、资源与环境发展的具体实际,建立了适合该省的可持续发展指标体系。该指标体系分四层共４７项指标。最后利用因子分析方法对江苏省１３地市可持续发展综合实力进行了评估。     

Is the Risk Comparison Made by the Public Between EMF and Smoking or Asbestos a Valid One?

The possibility of adverse health effects from exposure to extremely low frequency (ELF) electric and magnetic fields (EMF) has caused considerable controversy in the scientific community and has received great attention in the media and among the general public with many comparing ELF EMF with tobacco smoking and asbestos. Although both smoking and asbestos are now classified by the International Agency for Research on Cancer (IARC) as Group 1 or “established” carcinogens, this was not always the case. In this paper the evidence for the carcinogenicity of ELF EMF is compared with that for smoking and asbestos using the Bradford Hill model for establishing causality between exposure and disease. Application of the model shows that present data are insufficient to demonstrate that exposure to ELF EMF poses a definite human health hazard. However, while the bulk of the evidence is weak, there are several epidemiological studies which have reported an association between prolonged exposure to magnetic fields at levels above what is normally encountered and an increased risk in childhood leukaemia. On this basis IARC has classified ELF magnetic fields as a Group 2B or “possible” carcinogen.     

Determination of derived importance of a tourism destination: A comparison of indirect methods

Two types of attribute importance, stated and derived, have been studied in marketing and tourism studies using Importance-Performance Analysis (IPA). Derived importance is thought to have an advantage over stated importance in reducing survey fatigue and social desirability biases, and thus is more predictable to an outcome variable. Derived importance is also used in a Relevance-Determinance Analysis to determine higher-impact core attributes or in an Importance Grid Analysis to explore the asymmetric relationship between attributes and overall satisfaction. Since derived importance is usually estimated through statistical methods, it is necessary to determine which method is the most appropriate. However, few studies have examined the appropriateness of indirect methods. To fill this research void, this paper judges the appropriateness of three statistical methods (i.e. multiple regression, partial correlation, and simple regression) based on data collected from Savannah, GA, using a new approach by which results of derived importance were compared against diagnostic attributes in the “keep up the good work” quadrant of IPA. Diagnostic attributes are attributes with higher stated importance and higher predictability of an outcome variable. Results show that urban forests and cultural heritage are such attributes, and simple regression is the best to infer attribute importance.     

Prioritising alternatives for sustainable end-of-life vehicle disassembly in China using AHP methodology

The projection on Chinese increasing end-of-life vehicle (ELV) volumes indicates that the volume in 2020 will be about threefold that in 2015. The issue of scrapping vehicle upsurge relative to capacity crunches and environmental impacts perplexes Chinese dismantlers and it is intractable and urgent to choose an appropriate dismantling mode. The purpose of this study is to prioritise four potential dismantling modes and provide decision-making reference for dismantlers with a view to such criteria as environmentally sustainable considering constraints involving economy, technique, ecology and flexibility over changing condition. The conducted evaluation by the analytical hierarchy process (AHP) methodology takes sensitive and problematic aspects into account through questionnaires. The whole evaluation process supported by expert preferences, provides a simple and intuitive knowledge to construct arguments for ELV decision-making process. Results show that disassembly line involves the highest global weight of 0.363 and is concluded to be the best compromised ecological alternative.     

Context sensitive multimodal road planning: a case study in Cape Town, South Africa

Road planning practice relies almost exclusively on parameters related to traffic factors, such as private vehicle speeds and volumes. In many developing countries the requirements for public transport and non-motorised transport are not explicitly integrated into the planning process, despite the fact that these form the primary mode of transport for the majority of the population. This affects the mobility opportunities for these sectors of the population and contributes to poor road safety, especially with regards to pedestrians. The research outlined in the paper posits that, in order to assess the usage and needs of the road holistically, other factors related to the adjacent land uses, socio-economic characteristics of the population the road serves, and the environmental context within which the road is located, factors heavily in how the road is used and should, therefore, be considered within the planning process. The paper describes a methodology to include these factors in the planning of roads. The method attempts to prioritise amongst the five primary road based modes (public transport, car, freight, walking and cycling) based upon a combination of traffic and non-traffic factors. The method employed uses a geographic information system (GIS) based spatial multiple criteria evaluation (SMCE) model with inputs from widely available data sources such as census, household travel surveys, land use and environmental data to arrive at solutions for modal priorities. A case study is conducted along an arterial route in Cape Town, South Africa, providing infrastructure planning recommendations and audit possibilities for the future. Since weighting is an important driver in the SMCE process, a sensitivity analysis is conducted to investigate the effect of alternative weighting schemes on the outputs from the method.     

Sustainabilty integration in product portfolio for sustainable development: Findings from the industry

Many companies decide which services, products, and technologies to include in their product portfolio using evaluation criteria, which often consider cost, quality, risk, revenue, time, and market position. Incorporating sustainability in the portfolio evaluation criteria could ensure the development of sustainable solutions from the early stages of the product development process, where there is more room for innovation. The aim of this paper is to understand how sustainability can be integrated in the company portfolio development. Semi-structured interviews were performed with experts in the field and representatives from multinational manufacturing companies with operations in Sweden. Main findings from this study include a proposed definition of a sustainability product portfolio concept and suggested portfolio evaluation criteria from an industry perspective. Future research will develop a method to guide manufacturing companies in sustainability integration and implementation in product portfolios.