挤扩支盘灌注桩技术及其应用研究

挤扩支盘灌注桩是最新的一种土建施工方法,为了能够很好地推广应用此方法,文章首先对分析了挤扩支盘灌注桩的结构模型和其形成机理,其次对其桩身的受力原理进行了详细分析,然后结合施工案例得出了挤扩支盘灌注桩在施工过程中的注意要点和挤扩支盘灌注桩的优点。     

冷却管在大体积混凝土中的应用

文章结合工程实践,对大体积混凝土温度裂缝产生的描述,通过对大体积混凝土内部温度计算,增设冷却管降温措施,总结出大体积混凝土冷却管的设计与施工的施工要点。     

对框架结构高层建筑梁柱节点的施工技术探讨

在高层建筑施工中,框架结构的节点是联系整个结构体系的枢纽,节点承受由梁端和柱端传递来的各种荷载的共同作用且受力复杂。因此,节点要求具有足够的强度,以保证整个结构体系的安全可靠。本文针对框架节点处理技术的基础理论及在施工中的应用问题进行探讨,并提出应注意的几个问题。以期通过本文的阐述对促进高层建筑施工质量,提高施工进度提供理论支持。     

基于两层架构协调的应急物资分配与车辆调度集成优化方法

针对突发事件下的应急物资调运问题，考虑了多个地区同时受灾以及多个出救点需要对其进行救灾并且各出救点的运力有限的情况，以最小化总的车辆运输费用，最大化救灾效率、各受灾点的救灾满意度，以及各受灾点得到救助的公平性为目标，建立了该问题的多目标混合整数非线性规划模型，并提出了一个基于两层架构协调的迭代式遗传算法进行求解。基于仿真数据的实验结果证明了所提出的模型和算法的有效性。     

Regular Price $299; Pre-order Price $199: Price Promotion for a Pre-ordered Product and the Moderating Role of Temporal Orientation

Retailers typically use the strategy of providing a discount to induce the sale of a new product at a pre-order stage. Despite the prevalence of this strategy, providing discounts might not be effective for all consumers. The present research shows that the positive effect of a discount depends on consumer temporal orientation. Results from four experimental studies reveal that a large discount positively affects present-oriented, but not future-oriented, consumers. The findings suggest that perceived financial risk and perceived product quality sequentially mediate the effect of discount size on value toward the deal and purchase intention. A third-party product quality rating boosts quality perceptions, which in turn reduces perceived financial risk and positively enhances value toward the deal along with purchase intention. Our findings demonstrate that when the brand itself acts as a reliable signal of quality, a discount has its intended effect for both present- and future-oriented consumers. Overall, the findings of this research suggest that a retailer can use quality cues along with a discount, especially for a new brand, to appeal to the broadest group, as it will attract both future- and present-oriented consumers.     

浅议施工企业项目实施策划书的编制要点

项目实施策划书是施工企业完成各项管理目标的指导性和纲领性文件。同时作为策划书编制的责任人的项目负责人,要通过施工调查、分析,确定管理目标、优化施工方案、编制成本计划和保证措施等,指导项目主要管理者完成各项管理目标。     

浅析互感器校验仪的使用技术要点

由于铁心磁阻的存在,互感器在传变电流的过程中就会产生误差,各种类型的互感器的基本误差是通过互感器校验仪完成的。所以互感器校验仪是电力系统中不可或缺的重要设备。但是由于它的工作线路比较复杂,要求必须合理使用。本文就互感器校验仪的使用技术谈几点看法。     

屋面刚性防水和柔性防水相结合的施工技术探讨

屋面防水是建筑工程中存在的质量通病,目前,较多采用的是刚性及柔性防水两种做法。在实际施工过程中,存在一些不够重视底层刚性防水层的心理,使得刚性防水层开裂、起鼓或渗漏,这样刚性的防水层形同虚设,加上柔性防水层也存在自身的缺点,因而两者结合的施工质量必须重视。本文论述了刚性防水和柔性防水相结合施工技术的质量控制要点。     

Insurance Considering a New Stochastic Model for the Discount Factor

In many empirical situations (e.g.: Libor), the rate of interest will remain fixed at a certain level (random instantaneous rate i i ) for a random period of time ( t i ) until a new random rate should be considered, i i + 1 , that will remain for t i + 1 , waiting time until the next change in the rate of interest. Three models were developed using the approach cited above for random rate of interest and random waiting times between changes in the rate of interest. Using easy integral transforms (Laplace & Fourier) we will be able to calculate the moments of the probability function of the discount factor, V ( t ), and even its c.d.f. The approach will also be extended to the calculation of the expected value (net premium) and variance of a term insurance and we will get its c.d.f., something not very common in actuarial literature due to its complexity, but very useful when the law of large numbers cannot be applied and consequently use normal approximations.     

Value-added annual shareholders meetings: reflections on people''s capitalism at Wal-Mart

Most shareholder annual meetings are relatively dull. This is a case study of how a large successful company, Wal-Mart, uses its annual shareholder meeting to motivate and spread best practices among other stakeholders including vendors and employees. In doing so, it makes it a value-added event and also livens up what may be a relatively dull annual shareholder meeting.