土工格室柔性筏基在软弱地基加固中的应用研究

通过对土工格室的工作机理进行分析,并对土工格室柔性筏基施工工艺进行了阐述,运用工程实例对土木格室柔性柔性筏基对于软弱地基的加固作用。     

浅谈桥头跳车成因及处理办法

本文对呼集高速公路桥头跳车的成因进行分析,并对桥头跳车提出了几点处理办法。     

高速公路桥头跳车的原因及防治方法

本文根据高速公路施工实践,总结出产生桥头跳车的原因,从设计和施工方面提出了防治桥头跳车的具体措施.     

一些土工合成材料的新产品和新应用

本文介绍一些土工合成材料的新产品和新应用。包括膨润土垫ＧＣＬ、土工管与土工色和它们的设计概念、土工格室及其地基承载力估算；以及能膨高水位２ｍ的“片坎”。     

土工布—跨世纪的新型土工合成材料

（一）岩土工程合成材料是以合成纤维、塑料、合成橡胶等聚合物为原料制成的用于岩土工程的新产品,包括土工布、土工膜、土工格栅、土工格室、土工模袋和其他有关品种。土工合成材料在我国已经有十几年的历史,最近发展较快,目前已应用于水利防洪坝基、公路、铁路、建筑...     

桥头跳车病害发生的原因与预防措施

本文从地基沉降、施工方法和结构体系上对桥头跳车病害发生的原因分析,探讨提出减少病害预防措施。     

CFG桩+泡沫混凝土解决软基桥头跳车的联合应用研究

为了减小路桥过渡段的差异沉降,缓解软土地区的桥头跳车问题,提出了一种采用CFG桩复合地基联合换填泡沫混凝土加固软基的方案。依托实际工程案例,采用有限元软件MIDAS GTS/NX建立了CFG桩复合地基工况模型与原始工况模型,检验了CFG桩复合地基的有效性,然后建立了CFG 桩联合台后换填泡沫混凝土方案的模型进行固结沉降分析,并验证了两者联合应用的优越性。研究结果显示：1）CFG桩复合地基对于软基的加固效果显著,其工期沉降比原始工况减少了18.32 cm;2）CFG桩复合地基加固软基时,台后换填泡沫混凝土使桥台与路面的台阶型差异沉降相较于台后普通路基填土工况减小了0.72 cm,对于桥头跳车问题的治理效果良好;3）模拟结果与工程实测沉降数据对比误差极小,说明了有限元模拟的可靠性。研究结果有效解决了常见的桥头跳车问题,方案具有更安全、环保、可靠的特点,可为软土地区的路桥过渡段工程提供一定的理论参考与借鉴。     

土工格栅二灰改良土在路基加宽中的应用分析

为了实现路基加宽工程中新老路基的有效连接,提出了使用土工格栅二灰改良土加宽路基的技术方法。以沧州市沿海公路路基加宽工程为研究对象,基于面向岩土工程的有限元分析程序MIDAS/GTS建立数值模型,分析土工格栅二灰土加宽路基的改良效果。结果显示土工格栅作为柔性加筋材料,有效改善了所加宽路基的受力性能。     

辽宁东部中低山区生态清洁小流域治理措施——以新宾满族自治县那家堡子小流域为例

针对新宾满族自治县存在的生态环境问题,提出生态清洁小流域治理措施,以那家堡子小流域为例科学合理地布设水土保持措施。以流域内自然资源的承载力为基础,调整人类活动,抓住"生态"和"清洁"的核心要素,合理布设生态护坡工程、蜂巢土工格室谷坊、水保林、封育治理等措施,实现村内资源的循环利用,促进流域内生态与经济的协调发展。     

知识产品销售策略

所谓概念格销售策略,无非是系统整理了商家以往“搭着卖”的经验,由商学院教授们写给未来商家的教材。     

为企业打造适合自己的柔性制造系统

介绍了柔性制造系统的产生、组成及其具有柔性和自动化的2个特点,一个理想的柔性制造系统应具备设备柔性、工艺柔性等8种柔性。介绍了柔性制造系统的5个级别:柔性制造模块、柔性制造单元、柔性制造系统、柔性制造生产线及柔性制造工厂。企业实施柔性制造系统,必须结合本企业的实际情况,避免盲目追求。     

Flexible Contract Workers in Inferior Jobs: Reappraising the Evidence

There is concern that the increase in flexible employment contracts witnessed in many OECD economies is evidence of a growth in low‐pay, low‐quality jobs. In practice, it is difficult to evaluate the ‘quality’ of flexible jobs. Previous research has primarily investigated objective measures of job quality such as wages and training or subjective measures such as job satisfaction. We jointly evaluate these elements of flexible employment contracts using a job quality index. Analysis of this index demonstrates that flexible jobs are of a lower quality. Differences in the subjective and objective assessment of factors like pay and hours are evident.     

灵活就业市场的新制度经济学分析

灵活就业是当前和今后实现扩大就业的途径之一。从新制度经济学的观点入手,引入交易费用理论,建立灵活就业条件方程,分析了灵活就业和灵活用工的微观决策机制。指出,就业机会、社会资本、人力资本及其利用效率形成正规就业阈值;物质资本、人力资本初始值及其净收益是灵活就业方式选择的决定因素。     

Technology Choice and Market Structure: strategic aspects of flexible manufacturing

This paper shows that the adoption of flexible manufacturing techniques by firms leads to a tougher price regime. However, consumers may not benefit since the tougher regime deters entry. Flexible manufacturing's ability to deter entry is moderated by two factors: non-prohibitive costs of re-anchoring flexible manufacturing processes and the possibility that entrants choose to produce niche products using designated technologies rather than adopt flexible manufacturing. Market preemption that deters entry will be characterized by excessive product variety. Alternatively, flexible manufacturers may prefer to accommodate entry by small-scale, niche firms. Moreover, ownership matters in determining equilibrium product configurations.     

Markups in a dual labour market: The case of the Netherlands

We follow the production function approach to assess markups, which requires the estimation of the output elasticity of a flexible input. In the basic setup we estimate a structural value added production function, using temporary contract hours as flexible input. We find rather stable markups in the Netherlands in the period 2006–2016. We show that extending the flexible input incorrectly with fixed contract hours results in an increasing markup. Findings are robust to an alternative setup, in which a gross output production function is specified and materials are used as flexible input. Implications for applied work and policy are discussed.     

Economic feasibility analysis of flexible material handling systems: A case study in the apparel industry

Flexible material handling systems (MHS) have been widely used to enhance productivity involved with product proliferation, and thus far, only fixed-track MHSs such as Eton systems in the apparel industry are commonly used. This paper explores the economic feasibility of a flexible MHS using free-ranging automated guided vehicles (AGV) with a local positioning system (LPS) for the apparel industry. A component-based and modified activity-based costing methodology is proposed to estimate the additional cost of adopting flexible MHSs, and then the internal rate of return (IIR) and payback periods are applied to evaluate the project economic performance. Results show that adopting flexible MHSs has a promising IIR which is larger than 30%.     

群体公民行为塑造:基于柔性激励的战略人力资源实践耦合模型

基于对群体公民行为内涵的不同诠释,探索中国情境对管理实践和群体公民行为的影响,分析柔性激励融入人力资源实践对群体公民行为各维度的积极作用。从战略人力资源实践的层面,剖析中国情境下群体公民行为的塑造机理,构建和验证基于柔性激励的战略人力资源实践(SHRP)耦合模型。通过SHRP的驱动、保障及执行力三个子系统的互动,共同塑造群体公民行为,并形成基于柔性激励的SHRP与群体公民行为的耦合。其中,长期雇佣政策对中国情境的群体公民行为塑造有特殊意义,而跨边界绩效管理在中国组织SHRP中需要得到进一步完善。     

Development of a flexible and programmable parts feeding system

This paper describes the development of a flexible and programmable vibratory bowl feeding system which is suitable for use in a flexible manufacturing system. Controlled by computer and driven by electro-pneumatic cylinders and stepper motors, this feeding system is capable of identifying the orientations of non-rotational parts and actively re-orientating them into the desired orientation. Three different neural network modules (ARTMAP, ART2 and Back-propagation) were tested for their suitability for the orientation recognition system. The system developed extends the capability of conventional bowl feeders to include feeding parts with only internal features, and feeding a family of similar parts without costly re-tooling. These features are well suited to applications in flexible manufacturing systems.     

Flexible and Family‐Friendly Working Arrangements in UK‐Based SMEs: Business Cases

Interest in researching flexible working arrangements has been growing as such practices have been heralded as the way to reconcile or balance the increased pressures of work and family life. Relatively little attention has been paid to the experiences of flexible working arrangements in small and medium sized enterprises. We report the findings of empirical work on ten small and medium‐sized enterprises and four larger organizations. The reasons for introducing particular flexible working arrangements in SMEs were explored. Our findings show that business case reasons were used when introducing flexible working arrangements in both SMEs and larger organizations, although in different ways.     

Designing flexible work practices for job satisfaction: the relation between job characteristics and work disaggregation in different types of work arrangements

The literature on flexible work practices has not yet evaluated in detail how the characteristics of a job affect job satisfaction. This study makes a distinction between two types of flexible work practices according to their aims: the accommodation of employees’ personal lives (employment practice) and the operational reasons of a firm (work practice). Based on this distinction, we studied how the characteristics of a job, which reflect the use of ICT to support the spatial disaggregation of business processes, influence the relationship between the two types of flexible work practices and job satisfaction. We show, through a survey conducted on 987 workers, that the characteristics of a job that favour work disaggregation positively moderate the influence of flexible work as a work practice on job satisfaction, but they do not moderate the influence of flexible work as an employment practice. The implications for managers, workers and scholars are discussed.