基于优化赋权法的船型技术经济模糊综合评判

多目标、多准则决策问题中,决策结果的准确性与属性权重的合理性和评价系统的可行度密切相关。分析了主观赋权法、客观赋权法的优缺点, 提出了基于优化的组合赋权方法。该方法应用序列二次优化方法求解组合权向量,使最终的组合权向量与专家统计评分法、层次分析法、信息熵法、变异系数法这四种单一的主客观赋权方法相似度最高。将这种组合赋权方式与模糊综合评价法结合应用于秦皇岛至温州电厂航线散装运煤船方案决策分析,并与灰色关联评价法结果比较,决策结果证明该综合方法能合理、客观的给出排序方案,同时也能推广应用于船舶与海洋工程决策的相关领域。     

铁路运输产品生产决策模型研究

通过对市场经济条件下铁路运输产品生产决策过程的分析，建立了满足市场需求的情况下，以企业效益最大为目标的生产决策模型，求解该模型，可确定出运输供给（产品）的种类，数量和最佳运行径路；在总成本控制下，还可以对运输产品的运价和结构进行调整。由于模型较大，只能用分解算法求解，文中给出了两种求解算法的思路。因模型的建立与铁路运输生产的实际情况相适应，所以能对铁路运输产品生产决策有指导意义。     

基于层次分析法的张家港木材流通中心选址

利用层次分析法,建立了张家港木材流通中心选址问题的结构模型,对流通中心的各备选地址进行了评估,选出最为合适的中心地址,为张家港的木材流通中心选址决策提供了科学依据.     

自由裁量权在海事行政处罚中的表现形式及其控制机制

本文论述了自由裁量权在海事行政处罚中的表现形式及其必要性,指出了自由裁量在海事行政处罚中存在的问题,提出了如何合理控制自由裁量权的相关对策。     

Low-power and Low-cost Design of Survival Memory Unit for 1000Base-T Gigabit Ethernet Transceiver

Introduction The Gigabit Ethernet (GbE) on category-5unshielded twins pair (UTP) which corresponds tothe IEEE 802.3 ab1000 Base-T standard has grad-ually become the main trend of local area network(LAN). To take advantage of the additional cod-ing gain offered by the trellis-coded modulation(TCM) coding without using a maximum likeli-hood sequence estimation (MLSE) decoder, a deci-sion feedback sequence estimate[1](DFSE) decodercan be used[2-6]. Like the decision feedback equalizer …     

A spatial decision support system for retail plan generation and impact assessment

Current geographic information systems typically offer limited analytical capabilities and lack the flexibility to support spatial decision making effectively. Spatial decision support systems aim to fill this gap. Following this approach, this paper describes an operational system for integrated land-use and transportation planning called Location Planner. The system integrates a wide variety of spatial models in a flexible and easy-to-use problem solving environment. Users are able to construct a model out of available components and use the model for impact analysis and optimization. Thus, in contrast to existing spatial decision support systems, the proposed system allows users to address a wide range of problems. The paper describes the architecture of the system and an illustrative application. Furthermore, the potentials of the system for land-use and transportation planning are discussed.     

信号交叉口混合交通仿真决策系统研究

交叉口是城市交通的瓶颈地带，目前凭经验制定交叉口交通组织方案的方法已不能适应城市交通的新局面。针对这一问题．从独立的信号交叉口交通组织入手，提出仿真决策的总体方法，并初步提出交通组织的专家方案集和混合交通仿真模型研究的技术路线及相关特征参数．这为提高交通管理水平提供了新的解决方案。     

A cellular automata traffic flow model combined with a BP neural network based microscopic lane changing decision model

The purpose of this study is to propose a cellular automata (CA) traffic flow model with high accuracy for lane change decision and name it LCCAM. A driving simulator experiment was conducted to find factors affecting lane changing decisions. A back-propagate (BP) neural network was used to obtain the lane changing rules for the microscopic lane changing decision model (LCDM), and the collected accurate vehicular trajectory data were used to train the BP neural networks for the prediction of lane changes. After comparing different input variable combinations, the most accurate input setting was determined, including the locations and velocities of neighboring vehicles, inner/outer lane indicator, and the speed limits of the corresponding lane. Then, the determined BP neural network was adopted in the LCCAM as the LCDM. Simulation results showed that the LCCAM can capture important characteristics such as the mean velocities and the number of lane changes well, by comparing with observed traffic flow. Meanwhile, the LCCAM illustrates a better performance in replicating the number of lane changes than the other reference CA models. The research results show that the LCCAM proposed in this study will have potential and value for autonomous driving and active safety analysis in the future.     

物流系统“结合部”的神经网络表达及决策

针对“结合部”在物流系统中的重要地位，在对物流系统结构及功能进行分析的基础上，提出了物流“结合部”的一种神经网络表达，并运用遗传算法实现了“结合部”网络的学习与决策。这一方法揭示了物流结合部的结构及作用机理，对物流系统的科学决策具有指导意义。     

船舶运营决策支持系统

介绍了船舶运营决策支持系统的构建方法。与一般的营决策支持系统不同,它以最优资源分配模型、最优生产调度模型和最优运输模型组成模型库,通过预测子系统、优化子系统、经营状况模拟及分析子系统输出定性与定量相结合的综合求解方案,将企业已有的信息系统与管理决策控制紧密结合在一起,为提高船舶运行效率,降低运营成本提供科学手段。