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781.
罗玉龙 《浙江交通职业技术学院学报》2014,(4):64-68
利用重庆市高职院校的调研数据,采用普通最小二乘回归法( OLS )对理论假设进行检验,实证验证了教学模式对提高高职数控专业实训教学质量的影响,以及不同政策的调节作用。结果显示:实践教学、校内实践、校外实践、虚拟教学和实物教学对高职数控专业实践教学有显著的正向影响;理论教学对实践教学有正向影响,但是不具有显著性;政策环境正向调节实物教学、校内实践、校外实践对提高高职数控专业实践教学的影响。 相似文献
782.
高职英语教学的最终目的是培养学生的英语实际综合应用能力。文中通过一项基于能力培养的高职英语课程教学改革实证研究,证明了高职英语教学的课程体系、教学模式和教学方法的改革都必须围绕这一最终目的来进行,从而全面提高和培养学生英语综合应用能力,更好地为学生就业服务。 相似文献
783.
许均锐 《广东交通职业技术学院学报》2011,10(2):123-125
校企合作订单式培养高素质技能人才,是高职教育改革、校企人力资源建设、行业发展的共同需要.这一模式有助于学生关键能力和良好职业素养的培养,提升就业率和就业质量.而学生管理工作是"订单式"培养过程控制的关键,文中通过校企双方在订单式培养过程中的长期实践,探讨校企合作中学生管理工作的创新点,以优质的实践效果推动订单式培养的良... 相似文献
784.
785.
鲁定华 《浙江交通职业技术学院学报》2011,12(1):75-78
结合近几年重点交通建设项目全过程跟踪审计实践,从交通项目跟踪审计的特点、作用、存在问题出发,探讨发展和完善交通建设项目跟踪审计模式需把握的几个问题,在交通项目跟踪审计实践操作和理论发展上作了探索。 相似文献
786.
Using Texas add-on sample data from the 2009 National Household Travel Survey, this study examines adult workers’ daily active choice decisions in the context of physical activity and attendant health benefits. The study looked at workers’ two choice behaviors: active activity and active travel. The first choice behavior, active activity, is developed as an ordered-response model based on the number of physically active recreational activities pursued during the workday. The second choice behavior, active travel, is developed as a binary-response model that examines workers’ active travel choices—whether or not the worker used any active mode of travel during the same workday. The study improves the understanding and knowledge of observed factors influencing workers’ physically active activity-travel behavior. The study also provides several observations regarding the role (and constraints) of employment in individuals’ active choices. Using a flexible copula modeling methodology, we explore the true correlation (or dependence) between the two behavior choices that could occur due to the presence of unobserved factors, suggesting a simultaneously low or simultaneously high propensity for being physically active across workers. The study findings suggest that transportation and public health policy makers can mutually benefit from encouraging workers to be physically active (from an activity and/or travel perspective). Overall, the study draws attention to the integrated nature of the public health and transportation fields, thereby providing a distinct view of active/inactive choice behavior. To our knowledge, this is the first study exploring a rich variety of components for workers’ active activity-travel behavior through a robust copula approach. 相似文献
787.
In view of the ongoing discussions concerning the possible designation of the Mediterranean Sea as a Sulphur Emission Control Area (SECA), a modal split model was applied to a case involving the transportation of consolidated cargoes between Thessaloniki, Greece and industrial hubs of northern Germany. A road-only option was assessed against a combined-transport route involving a ferry (Greece–Italy) and a truck-on-train (Italy–Austria) service. The logit model used considers two variables as determinants of the modal selection: transport cost and time. The data are derived from interviews with a small transport service provider, typical for Greece, and are based on actual trips made (revealed preferences). The results predict that the designation of the Mediterranean as a SECA will cause a modal shift in favour of the road-only route by 5.2%, which under certain assumptions can reach 17.1%. However, the environmental implications of the resulting modal choices, calculated through the EcoTransIT World web based tool, are positive in relation to all emissions examined. This is attributed to the longer distance of the combined-transport option in comparison to the road-only one and, the poor environmental performance of the Ro-Pax vessels basically due to the need to maintain a relatively high speed. 相似文献
788.
789.
贺荣德 《铁路工程造价管理》2012,27(3):42-45
阐述合同管理在企业生产经营中的地位、合同管理的科学理念、合同管理的基本要求、合同管理及流程,对合同管理的准备阶段、签署阶段、履行阶段、履行后管理阶段的工作重点及风险防范进行论述。并对在合同管理过程中因外部环境因素、对方原因、企业自身原因产生的风险,提出降低风险的对策和进一步加强合同管理的措施。 相似文献
790.
《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(12):1759-1771
The fast-paced, iterative, vehicle design environment demands efficiency when simulating suspension loads. Towards that end, a computationally efficient, linear, planar, quasi-static tyre model is developed in this work that accurately predicts a tyre's lower frequency, reasonably large amplitude, nonlinear stiffness relationship. The axisymmetric, circumferentially isotropic, stiffness equation is discretised into segments, then parameterised by a single stiffness parameter and two shape parameters. The tyre's deformed shape is independent of the overall tyre stiffness and the forces acting on the tyre. Constraint modes capture enveloping and bridging properties and a recursive method yields the set of active constraints at the tyre–road interface. The nonlinear stiffness of a tyre is captured by enforcing unidirectional geometric boundary conditions. The model parameters are identified semi-empirically; simulated cleat test loads match experiments within 7% including nonlinear stiffness when simulating a flat plate test and a discontinuous stiffness when simulating a cleat test. 相似文献