"互联网+"时代认知学徒制实施的新特点

"互联网+教育"是指将互联网思维应用于教育领域,形成新的教学理念,同时利用新一代信息技术来提高教学绩效的一种改革思路.本文在分析"互联网+"时代教学理念的基础上,重点阐述了"互联网+"与认知学徒制融合的实施策略,包括立体化教学模式、虚拟情境设计和教学活动中的技术融合.嵌入了"互联网+"技术的认知学徒制教学,将具有更大的潜力,在可实现性、安全性、灵活性以及教学效果方面,都远胜于传统的认知学徒制模式.     

新冠肺炎疫情对居民消费的影响及对策

2020年春节期间,湖北省武汉市爆发的由新型冠状病毒感染引起的肺炎疫情正在对中国经济和消费带来负向冲击。从逻辑上看,除了直接限制消费外,疫情还会通过收入效应、财富效应、实际购买力效应对消费形成不利影响。从历史上看,十七年前的"非典"疫情对经济和消费的影响是短期的,但此次疫情影响更大,持续期存在不确定性。稳定消费的关键是稳定居民收入,要稳定居民收入就需要稳定非农产业就业。基于分析,本文提出了一揽子政策建议。     

Different forms of corporate philanthropy,different effects: A multilevel analysis

This study investigates how different types of corporate philanthropy impact employees' life satisfaction. Grounded in signaling theory, we explore and clarify the nuances among three types of corporate philanthropy values: the absolute value of corporate philanthropy, the value of a firm's corporate philanthropy relative to its past level, and the value of corporate philanthropy relative to the firm size. Results of multilevel analyses on a large scale sample with 218 firms and 2,261 employees at two time points reveal that: the absolute value of corporate philanthropy positively influences employees' life satisfaction; the value of a firm's corporate philanthropy relative to its past philanthropy negatively impacts employees’ life satisfaction; and the value of corporate philanthropy relative to the firm size positively affects employees' life satisfaction. The results indicate that the influences of corporate philanthropy on employees' life satisfaction vary depending on the evaluation benchmarks. Firms may benefit by taking their size and past philanthropy into consideration when making corporate philanthropy investment decisions.     

基础设施对中国经济增长的影响及机制研究*——基于扩展的Barro增长模型

基础设施既可以作为特殊的资本存量直接促进经济增长，又可以通过促进投资和劳动力增加（增加生产要素数量）以及提高存量资本和劳动力的边际生产率（提高生产要素效率）间接促进经济增长。本文构建了一个扩展的Barro经济增长模型，并利用中国1992—2016年省级面板数据和中介效应模型对两条机制进行实证检验。结果发现：基础设施对经济增长具有促进作用，但对交通、能源、通信三类基础设施的影响以及在2008年金融危机前后均表现出异质性。直接效应呈动态上升趋势，中介效应则逐渐下降。针对异质性的原因，本文进一步采用非线性模型进行检验。结果表明我国基础设施对经济增长的促进作用主要表现为规模扩张型、数量型或外延型，而不是以质量型和内涵型为主的形式。能源和通信基础设施对经济增长的总效应具有规模效应，交通基础设施的规模效应不显著，但也对经济增长具有持续促进作用。这说明目前我国三类基础设施仍然具有较大投资潜力。其中的关键是要通过基础设施建设提高生产要素效率。     

大豆大杂粉碎及重杂灭活工艺改造

随着国家对环保的重视,改变进口大豆大杂(豆荚、豆杆)焚烧处理的传统做法尤为重要,采用风选、粉碎等手段,区分处理轻重杂,杂质分别采用生产线高温高压和蒸汽湿热灭活法进行处理后,可充当纤维类物质掺入到成品豆粕中。根治环境污染的同时降低厂内安全风险,充分利用进口大豆秸秆类纤维物质,减少大豆损耗,以较小的投入实现经济效益和环境保护。     

Geography,Informal Information Flows and Mutual Fund Portfolios

This paper explores how informal information channels impact mutual fund performance. We measure the strengths of two location‐based information channels: 1) information transfers among fund managers (fund‐fund links) and 2) transfers between managers and the companies in which they invest (fund‐company links). We find that each channel increases investment performance in the absence of the other, but decreases it when acting in combination. Stock selection associated with the presence of one channel, but the absence of the other, earns positive future returns. Our results indicate that the economic benefits of informal information channels depend critically on the nature of their interactions.     

CORS系统在上海市集体土地所有权调查项目中的应用

本文在详细介绍CORS系统的基本原理及分析其优势的基础上,将其应用于上海市集体土地所有权调查中,完成实测界址点和图形数据成果检查验收,充分发挥其精度高,速度快的优势,保证调查成果质量。     

农村宅基地管理问题浅析——结合安阳市北关区二次调查和土地规划修编工作论述

农村土地利用尤其是宅基地管理存在问题日益凸显,农村住宅建房占用耕地现象日益严重,直接危及耕地红线.本文以二次调查和规划修编工作中遇到的问题为主线,详细阐述了当前我国农村宅基地管理存在的主要问题及原因,并提出了解决问题的方法.     

Modeling hazardous materials risks for different train make-up plans

This paper is concerned with the problem of how to place hazardous material cars in the train assembly process so that the overall derailment risk can be minimized. The approach considers both the probability of railway cars derailing en route by position as well as the risk associated with additional operations in the rail yard using recent US FRA data. The merits of this car placement model are illustrated through a case study of a railway corridor that connects Los Angeles (CA) to Chicago (IL). The case study demonstrates that the proposed risk minimization strategy could be implemented with minimal rail yard operation cost.     

高职高专护理专业基础医学课程设置中存在的问题

目的:探讨基础医学课程在护理专业的中存在的相关问题;方法:对其开设的合适与否以及后期临床课程的学习及临床工作的直接关系进行分析;结果:现阶段我校护理专业基础医学课程存在学时的分配、教材的选择、教师的教育背景及教学方法等不尽人意之处;结论:护理专业医学基础课程设置与安排有待进一步改进。