关于天津临港产业区总体规划的构想

从规划选址和建设规模、功能定位、平面布局、规划中的重点问题等四个方面,对临港产业区的总体规划构想进行了阐述。     

一种改进的Jakes’信道模型及仿真

由于无线通信环境中存在的诸多不确定因素以及其在现代无线通信系统中的重要作用，合理的无线信道成为通信系统仿真研究的重要目的。确立信道仿真模型的目的就是为了尽可能的得到实际信道的统计特性，该文针对Jakes提出的信道模型，通过仿真来分析其局限性，并参考其中的谐波叠加（sum of sinusoids，SOS）法，来建立一种采用了随机分支增益、随机初始相位和有条件的随机多普勒频率改进的信道模型。     

RCF-RPWM策略的功率谱分析及优化设计

在DC-AC变换器中,通过对载波频率的随机化处理,可以把输出电压的离散谱转换成连续谱,降低功率谱的峰值,达到抑制声学噪声和降低电磁干扰的目的.文中推导了采用随机载波频率RPWM策略逆变器开关函数的功率谱密度解析表达式,实验结果验证了其正确性.通过引入特征函数,提出了采用有限点载波频率进行随机时,开关频率选取的优化准则,仿真结果验证了其有效性.     

抗紫外老化剂对沥青性能的影响

为解决南方湿热地区沥青路面受紫外光老化影响问题，利用紫外老化环境箱和动态剪切流变仪研究老化时间和受阻胺类抗紫外老化卉l】（GW一944）对沥青高温动态力学性能、低温和疲劳性能的影响。试验结果表明：强紫外光降低了沥青疲劳性能和低温性能，改善了抗车辙性能，且随老化时间延长而加剧；受阻胺类抗紫外老化剂（GW-944）能较好地对SBS改性沥青进行抗老化性能改善，且对其性能改善存在合适的掺量范围，适宜掺量为0．5％，而对基质沥青性能改善并不适用。研究成果为沥青路面有效防治紫外光老化提供了技术依据。     

车辆动力性能评价仿真系统设计

运用LabVIEW图形化编程软件,通过结构化设计及模块化编程,设计出车辆动力性能评价仿真系统.该仿真系统考虑了多种参数对车辆动力性能的影响,并且能够处理Excel扭矩数据表格和生成Word报表文档,使用方便,仿真结果准确性较高.利用此仿真结果可进一步优化车辆的结构参数,从而提高车辆的动力性能.     

The Evaluation of the 2nd Ocean Plan in Korea: Focused on the Implementing Power of the Plan

There seem to be two types of ocean planning system in the world. First, the federal or united government suggests a basic framework of the plan which is followed by states, countries or areas as shown in the European Union, the United States, Canada, Australia, and so on. Second, a powerful central government prepares a basic ocean plan that guides the following sector plans of the relevant ministries. These cases are shown in Japan, Korea, and China. In Korea, the 2nd Ocean and Fishery Development Plan (OK21, 2011–2020) was made as a comprehensive ocean plan reflecting recent natural and social changes including global warming. The OK21 is declarative in its nature, and so evaluated by its sector plans, which have some specific implementing means such as budgets and manpower, organization, and so on, by the relevant laws. The 2nd OK21 is supported by 21 legally binding sector plans, 14 more than in the 1st plan, thus guaranteeing more effective implementation than in the 1st plan. In addition, most of sector plans are planned to be carried out through the well-coordinated system among the related ministries, thus showing a high degree of implementing efficiency of the plan. Every marine area in the plan, including marine environment, is being supported by more sector plans than before, indicating the equitable development of marine areas in the future. In sum, the 2nd OK21 is expected to show more implementing power due to the well-organized sector plans than in the 1st plan.     

Critical success factors of supply chain integration in container shipping: an application of resource-based view theory

ABSTRACT

The container shipping industry is receiving growing attention in driving the performance of global supply chains. This phenomenon has accelerated supply chain integration (SCI) within the industry. Although SCI could offer numerous benefits, it is often quoted to be implemented easier in theory than in practice. The high failure rate that is associated with SCI is often not addressed in the literature. Grounded on resource-based view (RBV) theory, this paper is aimed at identifying the critical success factors (CSFs) and examining their influence on SCI and supply chain performance (SCP). Survey questionnaires were administered on 164 container shipping firms. The constructs were validated empirically using confirmatory factor analysis and were subsequently analysed using structural equation modelling. The proposed CSFs in this study are found to be positively corelated with SCI, which, in turn, is positively correlated with SCP. This paper has contributed to both theory and practice by applying RBV theory to identify the key resources and capabilities that are necessary for SCI in the container shipping industry.     

多平台间信息传输测试分析方法

文章根据电子信息系统的试验需求，结合工程实际，从具体应用人手，讲述一种多平台间信息传输性能测评方法，并对如何实现数据采集与记录、信息传输实时监测、系统性能分析等方面进行了详尽描述，该方法为多平台综合试验提供了有效的评估手段。     

Verifying liner Shipping Alliance’s stability by applying core theory

The core is a vital concept in cooperative game theory and has been widely used in analyzing alliance’s stability. It is especially interesting to apply core theory in liner shipping market due to the latter’s exceptional characteristic of non-homogeneous cost curves as well as divisible and fluctuant demand. Having observed some new phenomena and trends in the industry, this paper studies the economic performance and stability of liner shipping alliance by applying core theory where business cooperation is partly realized by delivering joint-service with mega container ships. To demonstrate the core situation in liner shipping alliance, a cost function is first identified on the basis of two assumptions regarding cooperation: 1) sharing or pooling vessels and 2) deploying mega container ships if needed. Taking cost functions as basis, two conditions of approaching core may be groomed, i.e., collective rationality and individual rationality. The first condition is discussed from the perspective of market, while the second condition is studied within the alliance. Stability of liner shipping alliance is then observed based on these two conditions. An illustrative case study is conducted in order to show some implications and explicitly clarify the theory.     

二灰稳定钢渣路用性能试验研究

运用填充理论进行钢渣的级配和石灰、粉煤灰最佳比例的研究,通过对不同级配、不同二灰掺配比例的混合料路用性能比较,提出了一种最佳比例的二灰稳定钢渣混合料,其钢渣构成承重骨架,二灰密实地填充于其空隙中并裹覆其表面.用电镜等手段对其进行了微观分析；用抗压强度和回弹模量评价其力学性能.此项研究对利用钢渣铺路具有一定的借鉴作用.