科创中国

目的 调查实习男护生职业生涯规划现状,为其职业规划指导提供依据.方法 采用一般资料调查表和护理专业大学生个人职业生涯规划问卷对67名临床实习的男护生进行凋查.结果 67名实习男护生职业生涯规划总均分为(89.37±13.62)分处于中等偏下水平,其中就业信心因子得分最低为(11.62±1.52)分.学历、学生干部经历、是否第一志愿报考护理专业、职业生涯指导课程经历等因素是实习男护生职业生涯规划的影响因素.结论 护理专业学生工作中应该制订针对男护生的职业指导体系,从而帮助男护生科学规划、合理就业和个人在职业生涯中的全面、可持续发展.

For planning optimum multiple stresses accelerated life test plans, a commonly followed guiding principle is that all parameters of the life-stress relationship should be estimated, and the number of the stress level combinations must be no less than the number of parameters of the life-stress relationship. However, the general objective of an accelerated life test(ALT) is to assess the p-th quantile of the product life distribution under normal stress. For this objective, estimating all model parameters is not necessary, and this will increase the cost of test. Based on the theoretical conclusion that the stress level combinations of the optimum multiple stresses ALT plan locate on a straight line through the origin of coordinate, it is proposed that a design idea of planning the optimum multiple stresses ALT plan through transforming the problem of designing an optimum multiple stresses ALT plan to designing an optimum single stress ALT plan. Moreover, a method of planning the optimum multiple stresses ALT plan which can avoid estimating all model parameters is established. An example shows that, the proposed plan which only has two stress level combinations could achieve an accuracy no less than the traditional plan, and save the test time and cost on one stress level combination at least; when the actual product life is less than the design value, even the deviation of the model initial parameters value is up to 20%, the variance of the estimation of the p-th quantile of the proposed plan is still smaller than the traditional plans approximately 25%. A design method is provided for planning the optimum multiple stresses ALT which uses the statistical optimum degenerate test plan as the optimum multiple stresses accelerated life test plan.

Quadruped robots consume a lot of energy,which is one of the factors restricting their application.Energy efficiency is one of the key evaluating indicators for walking robots.The relationship between energy and elastic elements of walking robots have been studied,but different walking gait patterns and contact status have important influences on locomotion energy efficiency,and the energy efficiency considering the foot-end trajectory has not been reported.Therefore,the energy consumption and energy efficiency of quadruped robot with trot gait and combined cycloid foot trajectory are studied.The forward and inverse kinematics of quadruped robot is derived.The combined cycloid function is proposed to generate horizontal and vertical foot trajectory respectively,which can ensure the acceleration curve of the foot-end smoother and more successive,and reduce the contact force between feet and environment.Because of the variable topology mechanism characteristic of quadruped robot,the leg state is divided into three different phases which are swing phase,transition phase and stance phase during one trot gait cycle.The non-continuous variable constraint between feet and environment of quadruped robot is studied.The dynamic model of quadruped robot is derived considering the variable topology mechanism characteristic,the periodic contact and elastic elements of the robot.The total energy consumption of walking robot during one gait cycle is analyzed based on the dynamic model.The specific resistance is used to evaluate energy efficiency of quadruped robot.The calculation results show the relationships between specific resistance and gait parameters,which can be used to determine the reasonable gait parameters.

通过对系统平面布置方法SLP的分析,阐述了SLP方法在粮食物流中心内部规划布局中的应用,证明了SLP方法在粮食物流中心规划设计中的可行性.通过对假设模拟物流中心的分析,最终得出了粮食物流中心的基本布局图,旨在对以后粮食物流中心的规划设计起到指导作用.

糯扎渡水电站绿色水电工程建设规划从生态环境保护和修复、环境保护管理、关键技术问题研究3个方面展开.介绍了糯扎渡绿色水电工程建设规划的意义、概念、指标和主要内容,并且概要说明了糯扎渡水电站建设过程中实施绿色水电工程建设规划的基本情况.实践表明,规划及其实施对于糯扎渡水电站和澜沧江流域水电开发实现可持续发展目标提供了支持,也可以为我国水电行业生态环境保护工作的深入开展提供有益的借鉴.

目的 探讨实习护生专业承诺在心理健康与择业效能感间的中介效应.方法 采用大学生职业决策自我技能感量表、症状自评量表、大学生专业承诺调查问卷对175名临床实习护生进行问卷调查.结果 实习护生择业效能感总分为(132.63±2.44)分;其心理健康、专业承诺、择业效能感两两之间存在相关性(P<0.0l);专业承诺在心理健康与择业效能感间的中介效应显著,且中介效应占总效应的45.43%.结论 护理教育者通过提高实习护生的心理健康和专业承诺水平,将有利于实习护生择业效能感的提高,从而实现成功就业.