湘西王村古街——石板串联起来的街道空间

湖南省湘西土家族自治州永顺县王村是一个具有两千多年历史的古镇,是国家级风景名胜区猛洞河景区的核心景区之一,是位于湖南省黄金旅游线路--张家界-凤凰线上的重要景点.     

TEDA西区拱桥设计

一、工程概况 天津市经济技术开发区西区中心庄路-京津塘高速公路拱桥是开发区西区基础设施一期工程的重要单体项目之一,位于开发区中心庄路与京津塘高速公路相交处,系分离式立交桥,立交桥沿中心庄路上跨京津塘高速公路,主桥采用双铰型上承式拱桥结构,主桥主拱净跨径62米,矢高8.8米,拱上建筑总跨径70米,桥面单幅宽度18米,一跨跨越京津塘高速公路,斜交角度为65度,引桥采用钢筋混凝土π形梁,立交跨径布置为19×20 70 19×20米,桥梁总长度为830米,桥梁总面积为30880平方米.     

跳出地产看地产——试论滨海新区房地产的宏观走势

滨海新区的开发开放正式纳入国家战略已有一年,在此前后,滨海新区的房地产开发热已持续近两年.静观这两年的事态变化,开发者已由最初的喧嚣、癫狂而趋于理性,置业者和投资者浮躁的功利心态也逐步冷却.显然,坊间追捧和媒体热炒的房地产开发"盛世"并未如期而至;一些先行者创造的个案营销神话,似乎也未再现,惟一的奇迹,就是滨海的房价一再拉高,已经与中心城区比肩.滨海新区的房地产到底出现了什么问题?原因何在?需要有一个客观的诊断和解答.     

Master Production Rescheduling Policy in Capacity-Constrained Just-In-Time Make-To-Stock Environments

This paper describes a simulation experiment to evaluate the relative effectiveness of rescheduling policies in capacity-constrained, just-in-time (JIT) make-to-stock production environments. Three performance measures were analyzed: average finished goods inventory, total units of sales lost, and a measure of schedule instability. Among the three loading methods we studied (level loading, front loading, and back loading), none was superior across all three performance measures. Level loading was the most robust, while back loading had an interaction effect with forecasting model and capacity level. Time fence scenario was found not to be as significant a factor in system performance as reported by previous research. Once an acceptable time fence scenario is selected, attempts to optimize this factor do not appear to offer significant improvement. It was found that higher demand variation, larger forecast errors, and tight capacity lead to the degradation of system performance. Judicious use of slack capacity helps a system to incorporate the periodic schedule changes typical of JIT systems.     

水族古文字与甲骨文的联系

长期以来在水族社会使用的《水书》是用水族文字书写的。其年代久远的《水书》呈现的是水族古文字。本文通过对比研究的方式,从时间与地域、书写字体形态、书写文化等三个方面论证,认为水族古文字与甲骨文有密切联系,水族古文字是古代神本文化的活化石。     

脆弱而短暂的缓和——1975至1978年的越南与东盟关系

1975至1978年,出于各自利益和现实需要的考虑,长期敌视的越南与东盟关系迅速实现了缓和。但是,由于双方推行缓和的目的存在巨大差异,注定了此次缓和不可避免地具有脆弱性和短暂性。     

ON EQUILIBRIUM PLAYER ORDERING IN DYNAMIC TEAM CONTESTS

We study equilibrium player ordering in a dynamic all-pay contest between two teams. The contest lasts two periods, and each team consists of two players who perform in different periods on behalf of their teams. The team with the higher aggregate output wins the prize, which is a public good to its players. Each team has one stronger player and one weaker player, and the two teams can differ in their values of the prize. The teams maximize their winning odds by strategically assigning their players to different periods. We find that when the intrateam heterogeneity in player ability is not excessive, the teams would allocate their stronger players to the late positions as the “anchormen.” When both the intrateam ability gap and interteam heterogeneity in teams' values become excessively large, the team with high value always places its stronger player in the early position, who will place a large bid to preempt late competition. (JEL C7, D7, D8)     

简论壮族五大文化遗产

南方稻作民族人文始祖洛甲及布洛陀、洪水育人神话盘古兄妹、左江花山崖壁画、歌圩的女儿、歌仙刘三姐、全国篇幅最长的民间抒情长诗《嘹歌》,及壮族原生态民歌,是广西壮族五大文化遗产。文化遗产是建设先进文化的民族根基,抢救文化遗产与建设首府先进文化密切相关。     

江浙新农村信息化建设状况的比较研究

利用第二次农业普查资料,根据发达地区的特点改进已有的农村信息化评价指标体系,主要从农村信息化基础设施与普及应用、农村信息化人才资源等方面进行定量分析,对江浙两省之间以及江浙两省各地区之间农村信息化状况进行了评价和比较研究.江苏省和浙江省都是我国东部沿海发达省份,同属我国长三角区域,在农村信息化建设方面都处在全国前列,但是江浙农村信息化建设模式不同,发展状况也不同,尤其是江浙两省内各地区农村信息化水平存在明显的不平衡.在探讨影响新农村信息化建设的关键因素的基础上,为加快两省新农村信息化建设提出对策建议:加强两省农村信息化人才培育,提高欠发达地区区域经济水平,是当前进一步推动江浙两省以及长三角地区农村信息化平衡、快速、协同发展的关键.特别要指出的是,苏南、浙东北等发达地区的重点是促进农村信息消费增长,而苏北、浙西南等地区的重点是发挥龙头企业信息化应用的带动作用.     

Linear scalar-on-surface random effects regression models

Many research fields increasingly involve analyzing data of a complex structure. Models investigating the dependence of a response on a predictor have moved beyond the ordinary scalar-on-vector regression. We propose a regression model for a scalar response and a surface (or a bivariate function) predictor. The predictor has a random component and the regression model falls in the framework of linear random effects models. We estimate the model parameters via maximizing the log-likelihood with the ECME (Expectation/Conditional Maximization Either) algorithm. We use the approach to analyze a data set where the response is the neuroticism score and the predictor is the resting-state brain function image. In the simulations we tried, the approach has better performance than two other approaches, a functional principal component regression approach and a smooth scalar-on-image regression approach.