Threats to the Validity of Logistics and Supply Chain Management Research

To increase the relevance of logistics and supply chain academic research, this paper recommends the development and testing of middle‐range theory and practice‐level theory. Yet, there are a number of research issues that arise when academic researchers test middle‐range and practice‐level theory, both in measuring constructs and in testing theoretical relationships between constructs. Concerning the measurement of constructs, this paper recommends that academic researchers pay more attention to content validity and undertake rigorous processes to ensure content validity. In addition, academic researchers need to more explicitly define constructs as either reflective or formative. If the construct is defined as formative, then the traditional statistical approaches to validate these measurement scales are not recommended. The appropriate use of employing single‐item measures for concrete constructs is discussed. In regard to conducting hypothesis tests, research issues associated with multicollinearity and omitted variable bias are discussed. Relative weight analysis is ideal for testing theoretical models and research hypotheses when survey data are obtained, multicollinearity is present, and there are a large number of independent variables predicting a dependent variable. Thus, relative weight analysis is ideal for testing research hypotheses in logistics and supply chain management.     

长三角港口腹地动态演变及耦合协调度研究

明确港口腹地演变趋势、分析港腹耦合协调度,对长三角地区港腹联动发展具有重要意义。量化港口系统—腹地系统综合指标评价体系,运用高斯烟羽模型在2006、2011、2016年3个时间节点上测算长三角地区主要港口影响强度,并对腹地范围进行划分,利用耦合协调模型定量分析港口系统和直接腹地经济系统耦合协调度。研究结果表明:长三角地区港口呈现"一超多强"的格局,以上海港为中心,各港口多极发展;港口腹地范围整体稳定,局部波动,上海港的边缘腹地不断缩减;港口与腹地的耦合协调度处于上升态势,宁波—舟山港腹耦合协调度最高。     

40CrNi_2Si_2MoVA钢棒材晶粒度控制

随着科技的进步与发展,以改变合金成分提高超高强度钢的强度和韧性已经很困难。本文以40Cr Ni2Si2Mo VA钢为例,探讨了通过控制晶粒度尺寸提高钢强度和韧性的方法。     

农民工住房满意度及其影响因素分析

农民工市民化是我国城镇化的推进器,而农民工住房问题是农民工市民化问题研究的重要内容。通过农民工大规模问卷调查数据分析发现,尽管住房条件较差,但农民工的主观感受好于预期,婚姻状况、收入等人口统计学因素和住房自身特征中多个因素对农民工住房满意度具有显著影响。     

Changes in risk and strategic interaction

In this paper we study the comparative statics of Nth degree stochastic dominance shifts in a large class of non-cooperative games. We consider symmetric equilibria as well as asymmetric equilibria in which the risk changes are idiosyncratic and not necessarily of the same stochastic order. Furthermore, we establish conditions for risk changes to produce multiplier effects on equilibrium strategies. Finally, we evaluate the comparative statics of stochastic dominance shifts in supermodular games, which may feature multiple equilibria and non-convex strategy sets.     

整村统筹土地整备中原农村土地利益协调——基于深圳的案例分析

深圳土地整备作为政府主导推进的存量土地再开发利用的重要模式之一,需要对土地整备中利益协调情况进行针对性分析,继而探寻有效的利益协调路径。引入嵌套博弈理论,对深圳坪山新区金沙、南布和沙湖3个社区整村统筹土地整备试点工作的利益协调进行探析。研究结果表明整村统筹土地整备中利益博弈多层次嵌套开展,博弈的主要要素体现在土地、规划和资金3个方面。深圳整村统筹土地整备原农村土地利益博弈的根源主要来自对原农村土地现状权益和未来发展权益的合理确定,利益协调的路径需要在现状权益的认定以及未来发展权益的落实方面构建通路,这是解决原农村发展问题的关键和根本。     

Policy coordination among the ASEAN-5: A global VAR analysis

This paper aims to analyse the feasibility of policy coordination among the ASEAN-5 economies. This is done by determining whether they experience symmetric responses to common shocks. Given that the problem of dimensionality plagues large-scale macroeconomic modelling, a Global VAR model by Pesaran, Schuermann, and Weiner (2004) and Dees, Mauro, Pesaran, and Smith (2007) is used. The results in this paper provide some weak evidence of symmetric responses to the common (global) shocks of interest: a US monetary policy shock, a US output shock, a Chinese output shock; an oil price shock. Shocks from the US produced the most symmetric responses. The lack of symmetry in some cases has implications for further policy coordination. Since migrant remittances could provide an adjustment mechanism, further labour market integration is needed as it currently lags behind trade and financial integration in the region.     

Two-period supply chain coordination strategies with ambidextrous sustainable innovations

This study considers a manufacturer with ambidextrous sustainable innovation capability selling products in environmentally conscious market through an independent retailer in a two-period game setting. We design a two-period game theoretic and dyadic supply chain (SC) model considering exploitative and exploratory nature of environmental innovations. We study five different contract types, namely, wholesale price contract, vertical Nash game structure, cost sharing contract, revenue sharing contract and two-part tariff contract. We demonstrate the impact of market sensitivity towards sustainable innovation and cost parameters on optimal level of decision parameters. The equilibrium results reveal that a suitably designed two-part tariff contract can be used to achieve coordination in a fragmented SC. The equilibrium results assist managers to optimise the SC based on the two-period contract model. The results obtained in this study can help the decision-makers to take decisions on investment in the ambidextrous sustainable innovation under different types of contract structures.     

黑龙江森工林区接替产业发展评价

运用熵权灰色关联分析法对黑龙江省森工林区所辖4个林业管理局2012—2017年养殖业、绿色食品等5个接替产业综合发展水平进行评价,并运用耦合协调度模型测算接替产业的均衡水平。结果表明:不同林业管理局的5个接替产业均呈波动发展状态;伊春林业管理局的优势接替产业是养殖业、绿色食品、北药开发和工业,牡丹江林业管理局的优势接替产业是绿色食品,合江林业管理局的优势接替产业是服务业,松花江林业管理局没有显著的优势接替产业;接替产业的综合发展水平偏低导致其均衡水平不高,总体上由初步协调向中度协调发展。因此,各林业管理局应继续发展具有优势的接替产业,同时扶持相对薄弱的接替产业,并开发与引进新的接替产业。     

海岛地区一、二、三产业融合水平研究*——以海南岛北部4市（县）为例

［目的］一、二、三产业融合发展是农业现代化进程中自发演化的重要形式，是破解我国小农户需求与大市场需求矛盾的重要武器，探究海南岛一、二、三产业融合发展的状况，对于推进海南岛农业和农村经济结构调整，农业产业化经营具有一定的借鉴意义。［方法］文章构建了三产融合度测度模型，运用1998—2017年海南岛北部4市的数据测度了海南岛一、二、三产业融合发展的具体水平。［结果］海南岛北部4市的一、二、三产业融合处于高度融合阶段，呈现了良好发展的态势，但是各子系统间协调性较差。从地区差异来看，海口三产融和水平和增长速度均处于领先地位，文昌和澄迈的三产融合水平和增长速度基本同步，在波动中稳步增长，定安的三产融合水平和增长速度处于最低状态。从融合路径来看，二、三产业融合的程度略深于一、二产业的融合程度，一、二产业融合的程度略深于一、三产业的融合程度。［结论］海南岛北部4市的产业融合发展仍有很大的进步空间，在今后的发展中，需要注重融合机制体制的顶层设计，破除多部门协作的制度壁垒，在尊重地区差异的基础上，追求“多规合一”，促进各区域间的协调发展，力争补足农业产业化发展的短板。