曲柄群驱动机构单元化平衡

为实现曲柄群驱动机构的模块化设计与生产,定义曲柄单元为该机构的基本单元,以曲柄单元为基础研究曲柄 群驱动机构模块化设计中的摆动力平衡问题。研究了影响平衡块质量及配置位置的因素。分析表明,当在所有曲柄的 反方向配置参数相同的平衡决时,平衡决的质量矩与机构中的曲柄个数,曲柄的质量与长度,运动连杆总质量有关。得 出一种满足模块化设计与生产的方法,该方法能快速有效地实现曲柄群驱动机构单元化平衡     

道路拥挤收费定价分析

利用路段交通流量、交通密度及交通空间平均速度的关系，通过选择合理的参量——路段交通载量，解决了由于拥挤路段流量与费用的非单调关系产生的拥挤收费为负的问题，给出了基于交通载量及交通密度比的拥挤收费定价公式，通过建立路段社会总收益函数，分析交通路网供需特性，给出了拥挤收费起点的一个解释。     

MULTISTAGE SAMPLING FOR RAW WOOL CHARACTERISTICS

The problem of evaluating the sampling variance of a mean when units are subsampled from a multistage sample is discussed. In particular, a specific problem arising in the sampling of wool where information on the identity of subsampled units is not available is dealt with by introducing a simple model to account for the variability in the unobserved numbers of observations within the multistage categories. Estimation aspects of the wool example are also dealt with.     

亚谐波注锁振荡器的分析

评估了各种注锁振荡器的分析方法,提出了亚谐波注锁振荡器的谐波平衡法。     

论监理工程师的职业责任保险

实行监理工程师职业责任保险是一项国际惯例，在我国推行监理工程师职业责任保险制度具有积极的意义。本文介绍了监理工程师职业责任及职业责任保险的概念，分析了国外职业责任保险的一些做法及我国监理工程师职业责任保险的现状，提出了在我国实施监理工程师职业责任保险的对策。     

小型风力发电系统最大功率控制的扰动法

本文给出厂结构简单、成本低、可靠性高的小型风力发电系统结构，提出了实现最大功率控制的扰动法，基于状态平均模型进行了仿真研究，仿真结果验证了最大功率控制扰动法的正确性和可行性。     

TESTS FOR SEASONAL DIFFERENCING WITH AN UNKNOWN BREAK-POINT

Some Lagrange multiplier tests for seasonal differencing are proposed; their main objective is to avoid over-differencing due to structural change. The null hypothesis is either the presence of both regular and seasonal unit roots or the presence of a seasonal unit root. Alternative hypotheses allow for stationarity around a possible structural change where the break-point is unknown. The location of the structural change is estimated using the proposed procedures, the asymptotic distribution of the test statistics under the null hypothesis is derived and some useful percentiles are tabulated. An illustrative example based on the Canadian Consumer Price Index is presented.     

农资经销商的转型及其动因分析——基于豫县的实地调研

农资经销商在涉农事业单位改革中产生,在农业市场化改革的推进中兴起并急剧分化,在新型农业经营体系构建中转型发展,其角色功能与市场行为呈现出鲜明的阶段性特征,其转型动力源于政府的改革导向、市场竞争机制的牵引、本身的理性、农业经营主体变化等因素的共同作用,其转型发展需要有效发挥政府权威性主体的统合功能。     

企业刑事合规的路径思考

刑事合规的初衷是预防和监控单位内部违法犯罪行为,目前已经全面进入我国理论与实践的视野。企业刑事合规对于企业犯罪预防与治理具有重要意义,可以凸显企业在犯罪预防实践中的主体地位,有效缓解刑事法对企业犯罪惩治的不利影响。但是,刑事合规理论与实践面临诸多困境。从国际上看,存在着有效刑事合规标准不统一、无法满足全覆盖要求、刑事合规负面影响遭忽视等问题;从国内来看,存在着组织体责任冲击传统的单位刑事责任认定、企业合规刑事激励制度试点不顺畅等问题。当前,应当通过构建相对统一的合规标准、适当调整合规计划具体要求、切割单位与成员的刑事责任等措施,构建具有中国特色的合规不起诉制度。     

Six for Lunch: A Dining Option for Residents with Dementia in a Special Care Unit

Recent research has focused on the design of special care units for residents with dementia, often identifying the social benefits of residentially scaled kitchen and dining areas. This qualitative case study examines how the environmental design features of two dining settings in one special care unit impact residents’ patterns of socialization and interaction at meal times. The first setting is a central dining room for 50 to 60 residents. The second setting is a small office with a residentially scaled kitchen, where once a week, the activity director invites six residents for lunch once a week. Within an ecological theoretical framework, the study findings reveal that, while mealtimes in both settings are highly anticipated, it is the complex relational ties between the operational, managerial, and environmental features of the settings which determine residents’ social interaction and satisfaction with their mealtime experiences.