ENGAGING THE PRIVATE SECTOR TO IMPROVE HEALTH IN AFRICA

In much of sub‐Saharan Africa, governments have demonstrably failed to deliver health services to the poor. In some places, governments and donor agencies have contracted with private companies and non‐profits to deliver health services, with considerable success. Ideologically driven Western NGOs oppose further moves towards private provision – seemingly preferring the poor to suffer substandard and erratic government provision than to obtain their healthcare through non‐state means.     

Promises and problems: using GIS to analyse shopping travel

Geographical Information Systems enable spatial analysis of a scale and nature that has never been possible before. However, their practical utilisation in transport research remains limited. This paper describes the specific experience of using the TransCAD GIS to assess different ways of organising food shopping. It concentrates on the role played by the GIS. In doing so, it aims to highlight many general problems that limit the scope of GIS use, as well as the benefits of such systems, and the broader issues which affect research based on GIS. It concludes with recommendations for greater compatibility, standardisation and reliability for both GIS and GIS data, to encourage their use in the future.     

医用聚酸酐材料研究进展

聚酸酐材料是一种良好的生物材料,它可以作为药物载体将药物带入人体,并且其具有生物相容性,可自身在人体内降解为对人体无害的二元酸。对医用聚酸酐材料的研究进展进行了综述,介绍了其合成及应用。     

城乡建设中阳光规划问题的法律思考

城乡规划是一项关系国计民生的重要公共政策,事关城乡协调和经济社会可持续发展,事关人民群众安居乐业.推行"阳光规划",能进一步增强城乡规划工作的透明度,有效地监督城乡规划的实施,维护百姓的正当利益.文章针对当前阳光规划实施过程中存在的诸多问题,分析制度与体制上存在的不足,从法律上完善科学合理的阳光规划制度,旨在全面有力地推进我国城市规划决策的公开化、民主化、科学化的进程.     

智慧物流下快递配送效能的优化

针对快递配送过程中缺乏对信息的有效预处理问题,构建了一套快递需求参数机制。该机制从多个维度方面分析配送需求的特征,并以之为基础,利用三维矢量评价模型对快递业务的重要程度进行预排序,以作为快递实际配送调度的信息基础,并通过运用所构建的综合指标队列来提升配送的有效性,增加配送业务的整体水平。     

Exploring the choice between in-store versus online grocery shopping through an application of Semi-Compensatory Independent Availability Logit (SCIAL) model with latent variables

This paper examines individuals' choice of in-store and online grocery shopping channels using stated preference (SP) choice experiments. The study uses 1,391 records from a stated preference choice experiment in the Greater Toronto Area (GTA), Canada. It applies a Semi-Compensatory Independent Availability Logit (SCIAL) Model with latent variables. The methodology accounts for semi-compensatory choice behaviour through probabilistic choice set formation considering effects from socioeconomic and psychological variables. This study demonstrates the advantage of considering probabilistic choice set formation and semi-compensatory behaviour in modelling the adoption of innovative products. Empirical results reveal that shoppers demonstrated similar myopic behaviours once they firmly considered in-store grocery and subscribed free delivery services in their choice sets. They are equally likely to choose both channels without careful comparison to alternative channels once they firmly consider both channels in the choice set. However, considering the latter in choice sets is much costlier than in-store shopping. Therefore, in-store grocery shopping will still dominate the grocery shopping channel unless all home delivery services become free. Moreover, grocery shoppers value same-day delivery service. For typical delivery services charged between $4 and $20 in the GTA, Canada, grocery shoppers are willing to pay between $3.91 and $8.44 for same-day delivery. The latent variable describing shoppers’ perceived pandemic fear significantly contributes to the choice set inclusion probability of in-store grocery pick-up services, but the effect is not significant for other home delivery channels. This highlights heterogeneity in grocery shoppers' choice behaviour within the online channel.     

B2C电子商务物流问题研究

随着电子商务的发展,物流配送已成为电子商务遇到的主要障碍。目前现有的三种配送方案均存  在不足,针对这一情况,研究一种能够完成购物网站与传统零售商的商流信息传递和商品实体的快速配  送的“新型电子商务物流”模式,并对新模式的可行性作初步探讨。     

浅谈运输机械及输送机械的分类

从对运输机械的认识开始,参照国内和国际有关的规范和技术标准。对其分类和输送机械的要素及命名进行了初步的研究和探讨,提出了一系列观点和看法。     

具有不确定交货期的供应链协调及效率研究

研究了制造商和销售商组成的二级供应链管理,销售商在有固定长度的销售季节内面临不确定性需求,制造商由于各种不可控因素交货期不能保证。文章建立了交货期延迟情形下制造商对销售商进行收益一致性补偿的模型,对比了分散决策与集中决策下的最优订货量和收益变化。通过算例仿真与数值求解,重点分析了制造商与销售商在应对需求与交货期不确定时,各种不同条件下供应链协调的效率,为企业决策提供理论支持。     

基于ITS技术的现代物流体系的构建

从ITS技术在物流中应用的角度出发，对智能运输系统（ITS）作了阐述，论证了ITS技术与现代物流的关系，并详细分析了ITS技术对现代物流的影响；最后针对物流活动的特点和ITS技术的应用，提出了基于ITS技术的现代物流体系。