通风机动平衡方法研究

本文根据刚性转子的运动规律,制定了通风机单平面动平衡试验的方法。试验表明,此方法可以有效地降低通风机的不平衡振动。     

Internet学习资源在大学英语听说教学中的有效性研究

本文采用问卷调查和实证研究,以90名学生为研究对象,运用建构主义学习理论,阐述Internet学习资源有效融入听说教学中的关键,在运用网络资源和计算机辅助英语教学的过程中要全面激发学生学习英语的兴趣,并对研究结果做出了相应的探讨。     

热再生养护车的设计及其工作装置驱动功率的平衡

沥青混凝土路面的养护工艺和专用设备的优劣直接关系到道路的服务质量和通车效率，采用热再生养护车是解决这一问题的良好途径。对养护车作业装置的结构设计进行技术优化和驱动功率的平衡分析是高质量养护车研发的基础和技术关键。     

Managing culturally diverse maritime human resources as a shipping company’s core competency

ABSTRACT

The last few years a great body of research focused on the problems observed in the shipping industry due to the mix of different nationalities on board. Herein, the problem is observed in the managerial level, and specifically to the applied crew management strategies and the philosophy of the shipping companies regarding the issue of multiculturalism. The present paper seeks to elevate the value of human resources in shipping and to underline the potentials that human resource management and cultural diversity management have as a shipping company’s core competency. In a triangulated theoretical framework, the combination of resource-based view, human resource management, and cultural diversity management leads to a framework of choices which include strategies for the management of maritime human resources’ cultural diversity. The paper analyses the practical application of the proposed strategies and the fulfilment of the criteria required for turning crew management to a core competency and gaining sustainable competitive advantage from human resources.     

车桥耦合振动数值分析

应用达朗贝尔原理推导车辆和桥梁的振动平衡方程,结合NEWMARK法计算原理编制对车桥耦合振动问题求解的计算程序.分别使用该程序和龙格-库塔法对一简支梁的车桥振动求解.结果表明:该程序的计算结果准确可靠,可应用于车桥耦合振动分析.     

南海神庙旅游资源开发中的地方政府职能定位

南海神庙是我国现存规模最大、保存最完整、“级别”最高的海神庙,但其旅游资源开发面临重重困难．本文深入分析神庙旅游资源开发中存在的问题,进而突出了地方政府在神庙旅游资源开发中应发挥积极作用．地方政府作用的发挥重点在：编制和执行南海神庙及周边环境保护规划,加大神庙及周边旅游配套设施建设,打造神庙旅游品牌、加强神庙旅游的宣传力度,地方政府应发挥南海神庙的日常营运管理职能等四个方面．     

双模式全断面掘进机探讨

为适应地质的复杂性以及中国国情,探讨双模式全断面掘进机的未来发展趋势,并举例说明双模式全断面掘进机的设计理念,详述其主要结构及适用范围。与单模式掘进机相比,双模式全断面掘进机地质适应性广、设备利用率高、施工成本低,是隧道掘进设备技术发展的主要方向之一,具有良好的发展前景。     

Mass balance of trace metals in the Adriatic Sea

A first order mass balance of six different trace metals (Mn, Fe, Pb, Zn, Cu, Ni) was presented for a 1-year period for the different compartments of the Adriatic Sea: compartment 1 (northern Adriatic Sea), compartment 2 (central Adriatic Sea and surface layer of the southern Adriatic Sea) and compartment 3 (deep water of the southern Adriatic Sea). The Adriatic Sea appeared to be a source of dissolved Cu, Mn and Fe for the Mediterranean Sea through the Strait of Otranto whereas for dissolved Zn and Pb the Adriatic Sea appeared to be a net sink. For dissolved Ni, inputs and outputs through the Strait of Otranto balanced each other. The residence times of all metals in compartment 1 were significantly shorter than that of water indicating significant removal. In compartments 2 and 3, residence times of Mn and Fe were relatively short suggesting removal from the water column whereas for the other metals their residence times were similar to that of water. Calculations of turnover times of metals with respect to different processes showed that in compartments 1 and 2, sedimentation was the main process that affected the content of the reservoirs whereas in compartment 3, the water flux exchanges played an important role for Zn, Cu and Ni.Most of the metals clearly undergo a very dynamic cycle of sedimentation/remobilization particularly in the Northern Adriatic Sea. In the northern Adriatic Sea, most of the Mn and Fe in deposited sediment were remobilized. This was related to diagenetic processes involving the utilisation and solubilisation of Mn and Fe oxides, which occur in the surface of the sediment in the northern Adriatic Sea. In the central Adriatic Sea, remobilization of Mn and Fe was less than in the northern Adriatic Sea, suggesting that diagenesis processes appear deeper in the sediment. Advective transport of sediment was a major source of metals for the deep basin. As much as 80% of the sediments in the South Adriatic Pit might be advected from the shelf. Remobilization fluxes in the South Adriatic Pit were significantly less than in the Northern and Central Adriatic Sea reflecting hemi-pelagic sediments.     

人力资源之浅析

企业人力资源管理是当今新型企业制度下所共同面临的新课题。本文提出人力资源管理中应确定有效沟通诚信为本、转变观念注重服务和加强管理持续发展三原则,建议高度重视人力资源的开发、利用和管理,为企业的长效可持续发展创造一个宽松良好的人力资源环境。     

土压平衡盾构过圆砾土层施工技术浅析

通过研究西安地铁一号线12标采用土压平衡盾构机穿越600 m全断面圆砾土地层的施工风险,提出了在盾构机设计、渣土改良,控制沉降等方面的各项措施,为以后类似工程施工提供借鉴。