千城一面——造城时代下的物竞天择

随着对城镇化质量的日益关注,媒体与学界对千城一面的批判愈演愈烈。然而,如果将城市看做是地球生态系统的一部分,遵循生物界优胜劣汰、适者生存的丛林法则,那么千城一面现象便是时代背景下环境选择的结果——特定的科技、经济、文化发展水平等客观属性,把在生存竞争中处于劣势的建筑形制与空间范式逐一淘汰,筛选出最符合时代需求与发展方向的特征传承下去。在理解千城一面的时代必然性的基础上,理性认识古典主义与现代主义、空间舒适性与独特性、空间使用者的主与客之间的辩证关系,才能走出"为批判而批判"的误区。     

我国城市休闲化发展质量的评价研究

城市休闲化是当代城市发展中的一个新课题。本文结合我国城市休闲化发展的实际状况,通过构建由公共基础、消费能力、产业能力和特色资源等4方面指标组成的城市休闲化质量测评体系,对我国27个省会城市、4个直辖市和5个计划单列市的发展质量进行比较全面和客观的质量测度与数据分析。研究表明,我国城市休闲化质量在整体上处于较低的发展程度。     

创新“城中村”社区治理的对策思考——以泉州市城东片区四社区为研究对象

创新"城中村"社区治理工作,是有效推进社会管理的重要内容。近年来泉州市在"城中村"社区治理方面进行了积极探索,并取得明显成效。要实现以"城中村"社区治理工作的创新推动城市管理创新,泉州应该在社区治理主体多元化、社区工作方式民主化、居民保障水平提高、社区管理者素质提升、社区文化建设加强等五个方面继续推进各种有益探索。     

浅析廊坊市加快科学发展的思路及措施

主要从思想建设、产业结构调整、城乡一体化方面探讨廊坊市抓住发展机遇,加快科学发展的思路。     

远海岛礁冷链物流体系优化模型及其集成算法

为研究远海岛礁渔获冷链物流的运行方案,本文选择了岛礁冷库储存中转和海上直接收购等两种不同的渔获运输方式,同时考虑了中转冷库选址、中转运输和直接收购船舶配备、航线配置、在渔场停留时间和渔获运输损耗等诸多复杂问题,构建了远海冷链物流体系组合优化模型。求解时,提出了一种以遗传算法（GA）为外部框架,以改进的模拟植物生长算法（PGSA）为内部模块,通过信息传递实现内外连接交互的集成算法。最后,以我国南海远海岛礁及渔场为实例进行分析,取得了较好效果。通过与传统遗传算法对比,本文优化结果、稳定性及计算速度等均有明显提高,从而证明了本文所建模型与算法的合理性和有效性。     

Fabulachia: urban,black female experiences and higher education in Appalachia

Abstract

This article draws on focus group conversations with black female college students attending a small, liberal arts institution in Kentucky. Based primarily on group interviews and discussions, as well as observations and analysis – a theoretical domain (referred to throughout the article as ‘Fabulachia’) emerged as a site-specific outcome of events and ideas regarding race, gender and identity experienced by the research participants. Specifically, ‘Fabulachia’ functions as a theoretical hybrid space in which urban (e.g. ‘ghetto fabulous’) black college student-voices find a sense of empowerment as they construct their own narratives of leaving ‘the hood’ to attend college in rural Appalachia. This project revises and updates previous research on race and rural identity/ies in order to situate the urban black female experience into an Appalachian context. Drawing on hip hop feminism and urban education based theoretical paradigms, the Fabulachia study seeks to give voice to black females in contemporary Appalachia, with attention to their self-proclaimed ‘ghetto fabulous’ identities honed in and through their urban upbringings. The unique experiences of (Fabulachian) black females are an important and largely absent part of larger conversations of the growing body of Urban education research that seeks to situate the black student/black youth and schooling experience in the US. In the Fabulachia study, a group of black female students shared personal narratives (part-oral history and part direct response) to prompts and queries about the role of hip hop culture, race and gender identity in their lives. They also discussed and debated what it means to be a black female in contemporary (often racist) Appalachia, and about how their families and urban surroundings influenced their processes of being and becoming in the context of higher educational achievement.     

Material logistics in hospitals: A literature review

Hospital material management has been identified as one key cost containment lever to cope with steadily increasing healthcare costs in industrialized countries. The purpose of this work is to present the state-of-the-art of research on material logistics management in hospitals. Particular focus is given to articles that apply quantitative methods. Our contribution is threefold: First, we provide research guidance through categorizing literature and identifying major research streams. Second, we discuss applied methodologies and third, we identify future research directions. A systematic approach is undertaken in order to identify the relevant literature from 1998 to 2014. Applicable publications are categorized thematically and methodologically and future research opportunities are worked out. In total, 145 publications are identified and discussed in this work. The literature is categorized into four streams, i.e., (1) Supply and procurement, (2) Inventory management, (3) Distribution and scheduling, and (4) Holistic supply chain management. The use of optimization techniques is constantly gaining importance. The number of respective publications has continually grown and has peaked over the last three years. Optimization has been successfully applied in research streams (1), (2), and (3). Category (4) comprises a rather qualitative research field of literature dealing with supply chain management issues.     

Evaluation of multi-objective optimization approaches for solving green supply chain design problems

This paper evaluates the applicability of different multi-objective optimization methods for environmentally conscious supply chain design. We analyze a case study with three objectives: costs, CO₂ and fine dust (also known as PM – Particulate Matters) emissions. We approximate the Pareto front using the weighted sum and epsilon constraint scalarization methods with pre-defined or adaptively selected parameters, two popular evolutionary algorithms, SPEA2 and NSGA-II, with different selection strategies, and their interactive counterparts that incorporate Decision Maker׳s (DM׳s) indirect preferences into the search process. Within this case study, the CO₂ emissions could be lowered significantly by accepting a marginal increase of costs over their global minimum. NSGA-II and SPEA2 enabled faster estimation of the Pareto front, but produced significantly worse solutions than the exact optimization methods. The interactive methods outperformed their a posteriori counterparts, and could discover solutions corresponding better to the DM preferences. In addition, by adjusting appropriately the elicitation interval and starting generation of the elicitation, the number of pairwise comparisons needed by the interactive evolutionary methods to construct a satisfactory solution could be decreased.     

Estimation of Deprivation Level Functions using a Numerical Rating Scale

Evaluating and quantifying human suffering in humanitarian operations offers an innovative and potentially powerful way to assess the performance of humanitarian logistics (HL) and help build optimization models. Previous studies have suggested deprivation cost as a metric and have estimated deprivation cost functions for water using willingness‐to‐pay. Our study proposes deprivation levels, defined as the degree of human suffering caused by lack of access to a good or service, and estimates deprivation level functions using a numerical rating scale. Analyzing data collected from respondents with and without disaster experience, we find that individuals in the latter category estimate deprivation differently from the beneficiaries of disaster relief. Our study demonstrates that deprivation levels can be expressed as logistic growth functions with a typical S‐shape, and that these can be integrated into HL optimization models to better account for human suffering.     

The Role of Media Exposure on Coordination in the Humanitarian Setting

Despite high demand and resource limitations, humanitarian organizations (HOs) typically do not share resources and/or coordinate in the field. While coordination enhances operational performance and saves costs, the general perception is that it dilutes the media attention that individual organizations might receive, and negatively influences their future donation income. In this study, we empirically unveil the impact of media exposure and operational performance on the donations obtained by HOs. Then, based on the empirical results, we develop a stylized model to characterize the structure of preferred coordination policies with respect to an organization's funding source and main mandate. Our findings shed light on the incentives and dynamics that drive behaviors in humanitarian operations and provide insights for policy makers on designing and implementing mechanisms that encourage humanitarian coordination.