上海港码头经营货物装卸商务单证使用和管理研究

介绍了上海港开展经营货物装卸商务单证管理的法律依据,通过对本港经营货物装卸商务单证使用和管理的情况调查,阐述了实施港口《商务单证管理规定》的重要意义,并对《商务单证管理规定》作了说明。     

新疆兵团道路运输业发展趋势分析

在对新疆生产建设兵团道路运输业现状分析的基础上,通过利用一元线性回归模型、平均增长率法以及灰色预测法三种方法分别对兵团2011～2015年的道路旅客运输量、道路货物运输量、道路旅客运输周转量、道路货物运输周转量等进行预测。结果显示,在未来5年当中道路旅客运输以年均7.7%增长,道路货物运输以年均9.2%增长,道路旅客周转量以年均10.6%增长,道路运输货物周转量以年均12.6%增长。     

新建地铁控制中心大屏幕系统的设计优化

地铁控制中心的大屏幕系统能够便捷地为调度人员提供直观的信息显示,但也因为能耗大、维护成本高等诸多原因而饱受争议.分析了大屏幕系统在使用过程中存在的争议,提出了大屏幕系统设计的优化和改进措施.随着运营需求的不断增加和对大屏幕系统要求的不断提高,在进行大屏幕系统设计时,必须在合理规划运营需求的同时,积极探讨和使用新技术、新工艺.     

UPS电源放电远程报警装置设计

分析UPS电源在现场使用中存在的问题,指出造成UPS电源自放电的原因及其后果,介绍UPS电源放电远程报警装置的设计特点、工作原理和作用。     

客车上水溢流改造技术探讨

针对客车上水溢流存在的问题开发了客车上水溢流控制装置。该装置分为车上和车下两部分。车上部分包括流量调节装置和液位显示控制仪,车下部分主要包括流量传感器、压力传感器及控制箱。并对该技术的改造方案和存在的问题进行了探讨。     

Efficient missing data imputing for traffic flow by considering temporal and spatial dependence

The missing data problem remains as a difficulty in a diverse variety of transportation applications, e.g. traffic flow prediction and traffic pattern recognition. To solve this problem, numerous algorithms had been proposed in the last decade to impute the missed data. However, few existing studies had fully used the traffic flow information of neighboring detecting points to improve imputing performance. In this paper, probabilistic principle component analysis (PPCA) based imputing method, which had been proven to be one of the most effective imputing methods without using temporal or spatial dependence, is extended to utilize the information of multiple points. We systematically examine the potential benefits of multi-point data fusion and study the possible influence of measurement time lags. Tests indicate that the hidden temporal–spatial dependence is nonlinear and could be better retrieved by kernel probabilistic principle component analysis (KPPCA) based method rather than PPCA method. Comparison proves that imputing errors can be notably reduced, if temporal–spatial dependence has been appropriately considered.     

Developing a Spatially Enabled Inventory of Recreational Boats Using Vessel Registration Data

Effective waterway management requires information on the characteristics and locations of boats. A field-based boat census—a traditional method to obtain spatially accurate information—is relatively expensive, time-consuming, and restrictive in scope. Vessel registration data, maintained by all U.S. states, is potentially a more robust information source. This research evaluated the accuracy and reliability of vessel registration data to supply location and attribute information for boats. The study premise was to use vessel registration data, which includes the mailing address of registered boat owners, to develop a spatially enabled inventory of boats. The study area comprised 12,064 salt-water accessible property parcels in two Florida counties. An on-water census (OWC) provided location and characteristics for 5,023 vessels, which were compared to 8,681 vessel registration records linked to the study area. Discrepancies between the OWC and vessel registration data were explained by a stratified, random sample of 485 telephone survey respondents. Study results show that vessel registration data accurately located and characterized roughly 81% of the boat population; in contrast, the OWC accurately located less than 56%. A conclusion is that state vessel registration data is a better alternative than an OWC for locating and characterizing boats kept along waterways.     

应用广义最大覆盖模型进行公路养护应急中心布局选址研究

应用广义最大覆盖模型方法在江西省国省道公路网络中进行公路养护应急中心布局选址,将养护应急中心设置在县级及以上行政中心点上,在点的服务半径已知的条件下,求解如何设立数量最少的点便可覆盖所有区域.     

汉英名词形态标记比较与翻译

汉英名词形态标记差异悬殊,这种语言形式的差异是汉英名族文化差异的具体体现。汉民族倾向于具体形象思维,语言形象具体,"动"感十足;而英语民族擅长抽象思维表达,英语语言具有"静"态性,行文灵活,表达自然,但也抽象晦涩难以理解。汉英语转换要充分考虑各自文化差异,分别体现汉英语的"动"态与"静"态。