An Easily Implemented Framework for Forecasting Ticket Sales to Performing Arts Events

This paper presents an easily used framework for modeling ticket sales to performing arts and entertainment events. Unlike existing efforts in this area, our framework allows us to: (1) model demand for events that consist of more than a single performance; (2) account for the influence of promotional effort on ticket sales; and (3) account for sellouts of some performances. The framework is applied to ticket sales for a university theater company, where it predicts ticket sales well in both an estimation and holdout sample. We discuss how the framework has influenced the company's marketing decisions.     

墙体参数模糊下穿墙雷达运动目标成像

针对墙参数模糊条件下运动目标成像速度慢、墙参数重建精度差等问题,提出了一种改进拟牛顿-粒子群优化(Limited Broyden Fletcher Goldfarb Shanno-Particle Swarm Optimization,LBFGS-PSO)算法,建立了LBFGS-PSO算法模型,解决了传统拟牛顿算法和粒子群算法计算速度慢、误差较大等问题。该算法与块正交匹配追踪（Block Orthogonal Matching Pursuit,BOMP）算法相结合不仅可以精确重建边墙位置,还能够准确地重建多径效应环境中的运动目标和静止目标,算法的计算速度和精度得到了一定程度的提高。仿真结果和数据分析验证了所提方法的性能。     

Sources of Growth in East African Agriculture

A dynamic agricultural sector is critical for alleviating Sub-SaharanAfrica's current economic crisis, and for laying the foundationsof sustained future growth. In recent years, however, agriculturehas performed poorly in many African countries. Efforts to assistits recovery, often through structural adjustment lending, havesuffered from inadequate information about country- and region-specificfactors, and from an emphasis on macroeconomic policies withoutcomplementary interventions at the sector level. The articledescribes the patterns of agricultural growth in Kenya, Malawi,and Tanzania, and examines price and nonprice aspects of threesets of factors: initial endowments and subsequent exogenousdevelopments, general economic influences, and sectoral issuesand policies. It suggests that government action at the sectoraland subsectoral levels in such critical areas as land policy,smallholders' access to inputs, and agricultural research needsto be combined with macroeconomic reforms to achieve sustainedand broadbased agricultural growth.     

Integrated Strategy Approach for Poverty Alleviation: A Paramount Priority for Africa

Abstract: This paper examines the nature and extent of poverty in Africa. It recognizes that poverty in the region is essentially a rural phenomenon and women are disproportionately affected. The paper argues for an integrated strategy approach to poverty alleviation in Africa which deals with the problem of poverty uprooting at three levels: 1) on those which can be addressed by an effective long term strategy of rapid and broad based economic growth; 2) those which require active population and human resource development policy; 3) and those which need special programs to uproot poverty Résumé: Ce document examine la nature et la portée de la pauvreté en Afrique. Il reconnait que la pauvreté est essentiellement dans la région un phénomène rural et les femmes sont disproportionnellement touchées. Le document plaide en faveur d'une approche de stratégic intégrée de la lutte contre la pauvreté en Afrique qui traite des problèmes d'eradication de la pauvretéà trois niveaux: 1) ceux qu'on peut résoudre par une stratégic efficace à long terme de croissance économique rapide et à base étendue; 2) ceux qui exigent une politique active de developpement de la population et des ressources humaines; 3) ceux qui ont besoin de programmes spéciaux pour extirper la pauvreté.     

员工-配偶工作家庭边界分割偏好匹配对员工工作投入的影响机制研究

依据个体-环境匹配理论和平衡理论，基于320份员工与配偶的配对问卷调查数据，采用多元回归分析、响应面分析以及块变量分析方法，探讨了员工-配偶工作家庭边界分割偏好不同匹配/不匹配类型对员工工作投入及情感平衡的影响。结果表明：员工-配偶工作家庭边界分割偏好匹配有利于提高员工的情感平衡和工作投入水平；而员工-配偶工作家庭边界分割偏好不匹配则会降低员工的情感平衡和工作投入水平。具体而言，当员工-配偶工作家庭边界分割偏好匹配时，员工边界分割偏好高-配偶边界分割偏好高对员工情感平衡和工作投入的正向影响更强；当员工-配偶工作家庭边界分割偏好不匹配时，员工边界分割偏好低-配偶边界分割偏好高对员工情感平衡和工作投入的负向影响更强。无论员工-配偶工作家庭边界分割偏好是否匹配，情感平衡均在其对员工工作投入的影响中起中介作用。     

基于物联网技术的高校智慧实验室架构

为了解决高校在建设实验室过程中面临的设备管理非自动化程度高、传感器传输信号异构化程度高、资源管理共享程度低和智慧化程度低等问题,以满足实验教学、管理、服务的开放性、可持续性和协同化需求,运用物联网和大数据技术提出了数据共享的智慧实验室解决方案,设计了感知层、网络层、大数据层、应用层和用户层等技术架构,并对模型中各层功能结构的设计方案进行了讨论;利用ZigBee具有的容纳节点数量大,增减节点灵活等特点,设计了基于ZigBee协议的海量感知数据传输的实现方案,通过对感知节点、网关设计等技术的融入,实现了海量数据的实时采集。基于物联网技术的智慧实验室将实现信息数据海量感知化、实时控制远程化、系统运行自动化、智慧感知分析,可为智慧校园建设提供借鉴。     

基于丝绸之路经济带发展的西安国际港务区运输通道构建分析

通过分析国际港务区在西安对外贸易发展中的作用，主要评价了物流通道中的运输通道建设问题，提出了在新的区域经济发展思路下运输通道的构建策略。     

基于区域经济的西安国际港务区竞争力分析与评价

对西安国际港务区所处的宏观经济环境和微观物流环境进行综合考察,客观分析和评价了西安国际港务区的实际竞争力,针对不足之处提出了提升竞争力的有效途径。     

关于构建陕西省农产品物流信息系统的思考

本文从陕西省农产品的供应现状及趋势、农产品物流信息服务面临的问题出发,分别论证了当前我国政府、农民、渠道商三个农产品物流相关主体急需构建农产品物流信息系统的必要性及可行性,并提出了我国农产品物流信息系统构建和应用的初步方案。