基于共享停车的车位租用与分配模型

共享停车作为一种缓解停车矛盾和挖掘停车资源的新思路，其理念与运营策略亟待完善. 共享停车运营平台整合停车资源并从中获利，但需要承担车位租赁成本. 为充分发挥共享停车模式对停车资源调整的灵活性优势，在综合考虑租用车位成本，提供停车服务收入和拒绝用户潜在损失的基础上，以共享停车平台运营商利润最大化为目标，提出对闲置车位租用与停车请求分配统一决策的整数规划模型，并应用相应指标进行评价. 算例结果表明，所提模型能有效提高运营商的利润与车位周转率，为共享停车平台运营商的决策管理提供理论参考.     

一种新型水下平台的水平面运动控制

新型水下平台用于从水面布放设备至海底,或从海底回收至水面指定位置,其主要运动形式为垂向无动力下潜或上浮。为了克服垂向运动过程中来自水平方向洋流的扰动,需要对平台的水平位置和首向进行控制。针对平台水动力系数等模型参数难以计算,水平洋流未知、且水平推进系统布置特殊的特点,设计了不依赖于模型参数且具有全局稳定性的水平面运动控制系统,并应用Lagrange方法对推力分配进行了优化从而减小运动控制的总功耗。最后通过仿真对控制算法进行了验证。     

基于能量最优的组合偏置推力分配算法研究

推力分配是动力定位控制系统的关键技术之一,其任务是将控制器输出的合力分配给各推进器。本文针对推力分配中存在的问题,提出组合偏置思想并设计了自适应组合偏置策略,建立了组合偏置推力分配算法。该算法基于能量最优方法,能够自适应地调整偏置量,兼顾船舶的能量消耗和操纵性。仿真结果表明该算法能有效地提高船舶的动态性能。     

舰艇自防御系统指挥决策模型研究

该文对舰艇自防御系统指挥决策中的威胁评估和武器分配模型进行了研究。研究了一种改进的灰色关联度的威胁评估方法,使其能够满足舰艇自防御系统的实时性和准确性;在威胁评估的基础上,研究了一种改进的模拟退火算法的武器分配方法,按一定的分配原则和约束条件,使舰艇自防御系统的抗击效率最大。     

A simple reservation and allocation model of shared parking lots

With increasing auto demands, efficient parking management is by no means less important than road traffic congestion control. This is due to shortages of parking spaces within the limited land areas of the city centers in many metropolises. The parking problem becomes an integrated part of traffic planning and management. On the other hand, it is a fact that many private parking spots are available during daytime in nearby residential compound because those residents drive their cars out to work. These temporarily vacant parking lots can be efficiently utilized to meet the parking demand of other drivers who are working at nearby locations or drivers who come for shopping or other activities. This paper proposes a framework and a simple model for embracing shared use of residential parking spaces between residents and public users. The proposed shared use is a winning strategy because it maximizes the use of private resources to benefit the community as a whole. It also creates a new business model enabled by the fast-growing mobile apps in our daily lives.     

Discretionary activity time allocation of individuals between in-home and out-of-home and between weekdays and weekends

This paper formulates a model for the allocation of total weekly discretionary time of individuals between in-home and out- of-home locations and between weekdays and the weekend. The model formulation takes the form of a continuous utility-maximizing resource allocation problem. The formulation is applied to an empirical analysis using data drawn from a 1985 time-use survey conducted in the Netherlands. This survey gathered time-use information from individuals over a period of one week and also collected detailed household-personal socio-demographic data. The empirical analysis uses household socio-demographics, individual socio-demographics, and work-related characteristics as the explanatory variables. Among the explanatory variables, age of the individual and work duration during the weekdays appear to be the most important determinants of discretionary time allocation.     

Spatio-Temporal Population Density and Spatial Dynamic Spectrum Allocation

Introduction The scarcity of available radio spectrum limits theextension of the modern wireless communication. Oneapproach to alleviate this limitation is the dynamicspectrum allocation (DSA) at network level, which isable to adapt to the spatial and temporal variation intraffic load[1]. The concept of DSA was first presentedin the DARPA (Defense Advanced Research ProjectsAgency) XG Program[2], with the aim to increase thespectral efficiency by spectrum sharing among radios.Due to the…     

第三方仓储能力配置与分配的收益优化

基于收益管理思想，对随机市场需求条件下仓储能力的配置与分配问题进行了研究，以谋求收益最大化．建立了随机规划模型，并运用稳健优化处理随机变量，将随机问题转换为线性规划问题．通过实例仿真，确定了最优仓储能力配置和分配方案，并对结果进行了分析．计算结果表明，用该模型优化的收益增长了2．66％．     

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京沪通道是我国东部地区最重要的运输大动脉，目前该通道建设中最突出的问题一是新建铁路的功能定位以及相关线路、车站的选线选址缺少必要的科学论证，二是过多平行铁路急于同时开工。从资源优化配置角度看，新建避城铁路以开行货车为主，而既有穿城铁路以开行客车为主，并保留市中心客站应该是较好的选择。通道规划对于运输网络与通道资源配置整体效率的提高具有重要意义，应该分层次进行规划并建立合理体制作保证。有必要通过“触发机制”的设计，使交通项目在综合规划体制统领下，依次经过必要阶段的认定、激活和触发程序才能够付诸实施。     

基于深度强化学习的分布式电驱动车辆扭矩分配策略

为在保证分布式电驱动车辆制动稳定性的前提下实现经济性的提升,提出了基于深度强化学习的分布式驱动前、后轴扭矩分配策略.在建立分布式电驱动车辆关键部件物理模型的基础上,基于车辆模型及制动稳定性约束,建立了基于深度强化学习的扭矩最优分配控制模型,并对传统固定比值的扭矩分配策略和所提出的策略进行了对比,结果表明:在新欧洲驾驶循...