THE EFFECT OF STATUS OF ZINC, CALCIUM ON GROWTH OF CHILDREN AGED 3～6 YEARS IN XI'AN AND ANALYSIS OF EFFECTIVENESS OF ZINC SUPPLEMEINT

Traceelementsareimportantnutri-tioussubstancesforgr0wthofchildren.Ithasbeenrep0rtedthatzincdeficiencyisthecause0fgrowthretardation,dwarfisminchildren.Thec0rrelation'0flevel0fzinc,calciumwiththegr0wthofhealtllychildren,howeverFasn0tbeenclearlyin-vestigated.Inthispaper,thecorrelationofheightandweight0fchildrenwithzinc(Zn),calcium(Ca)statusisanalysedandtheeffect0fzincsupplementongrowthofchildrenisinvestigated,accordingt0anobservati0n0n456healthychildrenaged3～6yearsinXi'an.MATERIALSANDMET…     

地铁车站装修空间规划理念与实践

在地铁的土建和设备设计日趋标准化的条件下,通过有效的“空间规划”为公共区赢得更高大、通畅的空间尺度,是实现车站装修效果突破的基础.装修设计要充分把握空间尺度,采用连贯的装修手法,展示鲜明的车站风格特征.结合北京地铁15号线的装修设计,通过对标准站和特殊站的综合分析,展示地下车站公共区装修方案与空间规划相结合的实践成果,论述“空间规划”的必要性和具体方法.     

桥梁评估中以功能价值为基础的权重计算

该文在以层次分析法为基础的桥梁评估中,引入了经济指标分析权重的思想,提出了功能价值的概念,以及相应的权重计算公式和计算方法;考虑了功能价值中间接损失及其计算;并解释了其合理性。接着,利用该文方法对实际桥梁进行了权重计算,并与专家调查咨询获取的权重值进行了比较。     

熵权值模糊综合评判法在港口竞争力评价中的应用

通过对影响集装箱运输的各种因素进行深入分析,建立了评价集装箱港市场竞争力的指标体系。运用熵权值的方法确定各个指标的评价权重值,建立多级模糊综合评判模型。通过该模型对集装箱港口的市场竞争力进行评价,该模型在实际应用中取锝了较好的效果。     

中国第三方物流的市场潜力及其开发策略

简要分析了中国传统物流业所处的困境及其原因, 指出提高服务质量、挖掘市场潜力才是摆脱困境的最根本途径; 根据调查所得数据, 对潜在需求的规模、没有走向市场的原因、第三方物流企业的目标市场以及市场需求的服务内容等进行了较深入的探讨, 并据此提出了第三方物流企业开发市场的基本策略     

Real-time network-wide traffic signal optimization considering long-term green ratios based on expected route flows

We propose a novel real-time network-wide traffic signal control scheme which is (1) applicable under modern data technologies, (2) flexible in response to variations of traffic flows due to its non-cyclic feature, (3) operable on a network-wide and real-time basis, and (4) capable of considering expected route flows in the form of long-term green time ratios for intersection movement. The proposed system has a two-level hierarchical architecture: (1) strategy level and (2) control level. Considering the optimal states for a long-term period found in the strategy level, the optimal signal timings for a short-term period are calculated in the control level which consists of two steps: (1) queue weight update and (2) signal optimization. Based on the ratio of the cumulative green time to the desired green time is the first step to update the queue weights, which are then used in the optimization to find signal timings for minimum total delay. A parametric queue weight function is developed, discussed and evaluated. Two numerical experiments were given. The first demonstrated that the proposed system performs effectively, and the second shows its capability in a real-world network.     

江西民营企业劳动关系评价指标体系设计

随着民营经济迅速发展,民营企业劳动关系双方矛盾日益突出．江西民营经济业已成为江西经济发展中最主要的力量之一．因此,研究民营企业劳动关系评价指标体系对于建设和谐民企劳动关系、构建和谐社会具有重大的现实意义．在通过大量调查的基础上,建立评价指标体系,并运用层次分析等方法,确定江西民营企业劳动关系和谐度评价指标体系的权重．     

阳侯高速公路自重湿陷性黄土评价与处治

较为具体地介绍了阳侯高速公路自重湿陷性黄土的成因、特征，对其湿陷等级进行了综合评价，并针对不同的公路工程提出了相应的地基处治措施，对今后高速公路自重湿陷性黄土评价与处治具有一定的借鉴意义。     

自锁式预应力锚固体系的研究

在后张预应力体系中,有时预应力锚具固定端需预埋在混凝土中的,预应力钢绞线也要同时预埋,这种施工方法存在现场施工过程繁琐、施工周期长、施工质量难以保证、钢绞线防腐蚀困难,以及构件无法预制等问题。就此介绍一种新型自锁式预应力锚固体系,该体系施工工艺简单,质量容易保证,且能适用于预制构件,特别适用在桥墩立柱、风电塔架等混凝土筒体的竖向预制拼装。主要从该体系的研究背景、结构设计、实施方案、试验研究等方面进行阐述。试验表明该体系锚固性能可靠、施工工艺简单、成本较低,能很好满足竖向预制构件的需要。     

Survey and empirical evaluation of nonhomogeneous arrival process models with taxi data

Arrival processes are important inputs to many transportation system functions, such as vehicle prepositioning, taxi dispatch, bus holding strategies, and dynamic pricing. We conduct a comprehensive survey of the literature which shows that many transport systems employ basic homogeneous arrival process models or static nonhomogeneous processes. We conduct an empirical experiment to compare five state of the art arrival process short term prediction models using a common transportation system data set: New York taxi passenger pickups in 2013. Pickup data is split between 672 observations for model estimation and 96 observations for validation. From our experiment, we obtain evidence to support a recent model called FM‐IntGARCH, which is able to combine the benefits of both time series models and discrete count processes. Using a set of seven performance metrics from the literature, FM‐IntGARCH is shown to outperform the offline models—seasonal factor method, piecewise linear model—as well as the online models—ARIMA, Gaussian Cox process. Implications for operating data‐driven “smart” transit systems and urban informatics are discussed. Copyright © 2016 John Wiley & Sons, Ltd.