陕北地区土地利用及景观格局变化对生态服务价值的影响*——基于退耕还林（草）背景

［目的］通过揭示退耕还林（草）工程背景下陕北地区近25年生态系统服务价值的演变规律，旨在为陕北地区的土地利用规划及新一轮退耕还林（草）政策的推进提供参考。［方法］以生态环境脆弱的陕北地区为研究对象，基于1990年、2000年、2015年3期的土地利用变化数据，以退耕还林（草）政策的实施为节点，利用土地转移矩阵、景观格局指数、生态服务价值损益表等方法对陕北地区的土地利用情况、景观格局演变以及生态服务价值的变化进行分析，借助相关性系数对土地利用类型、景观格局及生态服务价值之间的关系进行了定量研究。［结果］（1）草地、耕地和林地是陕北地区最主要的土地利用类型，耕地面积减少，林草地面积持续增加且增速加快。（2）近25年，陕北地区景观格局的连接性和通达性降低，景观格局主要呈破碎化发展趋势。研究区各景观类型的破碎化程度增大，空间异质性增加，草地是该地区的优势景观类型。（3）陕北地区1990年、2000年和2015年各类生态系统提供的总生态服务价值分别为38919亿元、39431亿元和40622亿元，退耕还林（草）前年均增长率为1396%，退耕还林（草）后这一比率增加至5622%。［结论］受退耕还林（草）政策的影响，陕北地区土地利用类型和土地景观格局的变化均对生态系统服务价值有显著的影响，但是不同的景观指数对生态系统服务价值的影响程度和趋势不同，水域和林草地面积对生态系统服务价值呈正相关，未利用地和城乡建设用地面积对生态系统服务价值呈负相关。     

论中职教师到企业实践进修难点——从中职教师到企业实践进修的难点看建立专业工作室的必要性

文章通过对当前中职院校教师轮训的现状分析探讨其中存在的问题,提出成立专业工作室来解决教师实践的有效策略。     

IMMEDIATE SETTLEMENT OR ENDURING A STRIKE: THE CHOICE OF SIGNALS

Some labour contract negotiations involve strikes while most conclude with immediate settlement. This article offers a model of union‐firm negotiation with private information to show that either strikes or immediate settlement will take place in the equilibrium. Different from most signalling literature where the signals are exogenously given, this article endogenizes the choice of signals. We compare two signals, the employment level and the strategic delay. We show that the low‐revenue firm will choose the signal which gives it higher payoff while separating itself from the high‐revenue firm.     

高校教师个性含义、意义及实现

教师个性是教师专业个性与教师自身个性的统一,由教育风格表现出来,是教师存在的方式。个性的教师才是完整的教师,才是有活力的教师。当代个性教育呼唤教师个性,要求培养个性的高校教师。因此,当前的高校应该强化个性教育观,弘扬教师个性;增强创新教育观,发展高校教师个性的独特性。     

大学生就业现状与高校教育收费的相关关系研究

近些年,大学生就业难已经成为社会所密切关注的问题之一.最近在对大学生就业难问题原因的探讨上,部分学者认为源于教育高收费,“成本困境”才是困扰大学生就业的真正致因抑或“瓶颈”.针对此种观点,本文在实证分析的基础上发现教育收费高并不是导致我国大学生就业难的根源,教育收费并不是大学生就业难的Granger原因,它只与我国大学生就业存在一定程度的负相关,并且这种相关性较弱,而学费高问题应由我国政府投入加以解决.     

电商推荐商品的网络线索对消费者购买意愿的影响研究

依据消费者网页浏览数据向消费者推荐近似产品已经成为电商提高销售绩效的重要手段。实证研究发现:电商推荐商品所处的网页位置和网络口碑方向均显著正向影响消费者的购买意愿,而推荐商品的网络口碑数量对消费者购买意愿的影响弱显著;产品涉入度在电商平台推荐商品所处的网页位置、网络口碑数量及网络口碑方向对消费者购买意愿的影响中均起到了调节作用。研究结论对电商平台利用大数据对消费者开展有针对性的网络营销具有重要的借鉴意义,电商平台在向消费者推荐产品时,应将优质产品置于网页靠前位置,加强对网络口碑方向和数量的监管,并针对不同产品涉入度设计营销策略。     

The China (Shanghai) Pilot Free Trade Zone: Background,Developments and Preliminary Assessment of Initial Impacts

The China (Shanghai) Pilot Free Trade Zone (SPFTZ) founded one year ago is a trial for China's new round of reform and opening up, which has promised liberalisation on the capital account and trade facilitation as its main objectives. Here, we discuss why China adopted such a pilot zone after three decades of economic development, and explore what the differences are between the SPFTZ and other free trade areas, and developments of the SPFTZ in the past year. We also make a preliminary assessment of the SPFTZ's initial impacts, especially of its impact on China's capital account opening and financial liberalisation. It is possible that the successful practice of the SPFTZ and more pilot policies replicated in China will give rise to a more balanced Chinese economy in the following decade.     

Firm location,political geography and environmental information disclosure

As the subjective and objective factors that influence corporate behaviours, political region and firm location are of great importance to environmental information disclosure (EID). With spatial and political geography as a research perspective, this article makes a study by using the samples of manufacturing listed companies from 2009 to 2011. As a result, we determine that regulatory distance and political geography had negative effects on EID, while political geography weakens regulatory distance’s function. After considering an enterprise’s administrative rank, we determined that when the rank is higher, regulatory distance has negative effects on EID; when the rank is lower, the effects are the opposite. Regarding political geography, it always weakened the regulatory distance’s function. Moreover, the effects are significant only when the enterprises had low governmental regulation. The study shows the effects that firm location and political geography have made on EID. At the same time, this study also gives theoretical and empirical evidence to the necessity of raising governmental regulatory effectiveness.     

Do Individual Employees' Learning Goal Orientation and Civic Virtue Matter? A Micro‐Foundations Perspective on Firm Absorptive Capacity

Research summary : In this study, we build on the micro‐foundations perspective and investigate how individual characteristics contribute to the development of firm absorptive capacity. In particular, we assess how individual learning goal orientation affects firm potential and realized absorptive capacity. Furthermore, we study how individuals' civic virtue acts as a micro‐level social integration mechanism that moderates the effect from firm realized absorptive capacity to potential absorptive capacity. Using the multilevel structural equation modeling technique and data from 871 core‐knowledge employees nested in 139 high‐technology firms, we find support to our major hypotheses. Together, this study finds support for the micro‐foundations' perspective and generates novel insights on how individual‐level factors could be linked with firm‐level heterogeneity in absorptive capacity. Managerial summary : We study how employees' characteristics contribute to a firm's absorptive capacity, that is, the ability of a firm to identify, assimilate, and exploit knowledge from the environment. Because firms have increasingly tapped into external resources to foster innovation over the past two decades, absorptive capacity is crucial to firm learning and success. Using data from 871 core‐knowledge employees in 139 high‐technology firms, we find that individual employees' learning goal orientation, the tendency to seek improvements in employees' competence and to understand or master new things advances the development of a firm's potential and realized absorptive capacity. More important, individual employees' civic virtue, the discretionary involvement in company issues, serves as a social integration mechanism that reduces the gap between firm potential and realized absorptive capacity. Copyright © 2017 John Wiley & Sons, Ltd.     

融入策划思想的规划思路探讨——以同里景区控制性规划为例

经济全球化的大背景下，投资体制、资源和利益分配体制都快速的摆脱原来计划经济的轨道，越来越受市场规律的引导和制约，在投资渠道越来越多元的今天，建设程序也有了很大的不同，这些变革都要求我们在规划过程中打破原来以物质空间规划为重心的规划方式，全方位的革新规划的技术方法和思路．为了在规划过程中真正理解规划实施的最重要因素“市场需求”，我们尝试在同里景区控制性规划中借鉴市场营销等方面的理论，引入市场策划的思想，力求让规划成果兼顾投资方利益以及公共利益，使之在实施过程中具有更高的可行性和可操作性。