城市居民消费结构变动的因子分析

在居民消费结构研究中,应用最广泛的是恩格尔系数和线性支出系统,但在进行消费结构变动分析时,因指标较多且各指标的变化趋势不尽相同,很难看出居民消费在某一方面的变动趋势.多元统计分析中的因子分析法正是解决这一问题的有力工具,文中利用因子分析法和DPS数据处理系统,对泰安城市居民消费结构的变动情况进行了分析.     

热继电器的合理应用

介绍了风机、水泵类负载起动时间大于15秒以上时，采用热继电器保护的方法，及控制线路在风机上应用的效果。     

Numerical Simulation of Concrete Plate Damaged Under Explosive Loading

The grisliness after-effects can be induced by explosion accident with the collapsing of the structures, the demolishing of the equipments and the casualty of the human beings. Isolation belt constructed between the blast point and the construction is one of the useful design schemes for blast resistance. The nonlinear procedure ANSYS/LSDYNA970 is used to simulate the contact detonation and the isolation belt of blast resistance filled with the air or water respectively. The results indicate that the maximal damage can be caused by the contact detonation, and the isolation belt of blast resistent filled with water can reduce the damage greatly.     

Durability of Bridge Expansion Joints with Perforated Dowels Under Traffic Impact Loading

In design phases, expansion joints are required to have movement capacity, bearing capacity for static and dynamic loading, watertight, low noise emission and traffic safety. On the basis of the fact that failure due to dynamic loading is the main reason for the observed damages, attention is focused on the bearing capacity for dynamic loading governed by impact, because it differs from the static loading. In this study, from the viewpoint of durability, experimental studies for. dynamic behavior were conducted for aluminium alloy expansion joints with perforated dowels. The validity of the perforated dowels against traffic impact loading was confirmed by both experimental and numerical studies.     

Design of bridge expansion joints with perforated dowels under impact loading

The expansion joints are expected to have movement capacity, bearing capacity for static and dynamic loading, water-tightness, low noise emission and traffic safety. In particular, the failure due to impact loading is the main reason for the observed damages. The problem of dynamic behavior of the expansion joints is so complex that we shall focus our attention on the impact factor for vehicle load that is governed by traffic impact. In order to overcome this difficulty, the cantilever-toothed aluminum joint (finger joint) is one of the promising joints under impact loading. In this study, from the viewpoint of design methodology, numerical studies for impact behavior were conducted for aluminum alloy expansion joints with perforated dowels. The design impact factor for the expansion joints with the perforated dowels against traffic impact loading was examined by using numerical simulations.     

固定收费路网条件下交通分配的延迟加载算法

路径收费措施是影响道路网络交通分配的重要因素.受出行时间、道路收费及交通拥堵等多种因素的影响,道路使用者会根据自身习惯、偏好及掌握的信息选择不同的出行路径.综合考虑了路径选择过程中确定性因素和随机性因素对时间感知价值的影响,建立了交通分配的变分不等式模型,设计了求解该模型的延迟加载算法,并叙述了该算法的求解过程.算例结...     

The Shared Agency of Photography in Gallery Education: Open Eye Gallery Discusses Its Rethinking of Gallery Education,through the Role of Photography as a Tool for Co‐Authorship and Co‐Production

This article describes a current project by Liverpool organisations Open Eye Gallery (Liverpool), Whitby High School (Ellesmere Port), recent partners Liverpool Hope University and Curious Minds. The school is in an area of high socio‐economic deprivation and low level of cultural engagement. The project seeks to support students’ photographic and digital skills, using co‐authored approaches to learning to raise young people’s overall aspiration levels. This article addresses conflicts / ethics of photography, social media and the digital in creative education today but ultimately seeks to champion photography as a tool for increased visual literacy when co‐authored between both school and cultural organisation.     

浅析泰顺廊桥文化的形态语意

浙江省南部泰顺地区被誉为"世界廊桥之乡",这里是中国廊桥保存最完整,也是最具有廊桥发展清晰脉络的地方。廊桥文化是中国劳动人民智慧的结晶,从廊桥形态的结构、造型、色彩设计元素来看,无不与泰顺地区的地理环境和人文精神有着密不可分的内在联系。廊桥文化的形态艺术、传统文化价值以及其资源再开发都应引起人们的高度关注和重视。     

深入研究Java的类加载机制

Java类的动态装载机制是Java虚拟机的一项核心技术,可以在运行时刻动态地加载或替换系统的某些功能模块,而不影响系统其它功能模块的正常运行。介绍了Java虚拟机中类的动态装载机制的原理、实现及应用,分析了类装载器的结构、用途,阐述了利用自定义类装载器装载并执行Java类的过程。     

项目导入法在“工程造价”课程教学中的应用研究

根据＂工程造价＂课程实践性较强的特点,教学中引入项目导入法,分析了项目导入法引入的基本条件,详细阐述了项目导入法教学的具体实施步骤,最后总结了运用该教学法应注意的问题。