压控晶体振荡器的设计

本文提出了晶体和频率控制元件的模型,介绍了基本电路的设计,并详细讨论了压控晶体振荡器调制器产生最小音频失真的必要条件。     

利用闪存芯片作存储器的单片机应用系统

在测量及测试应用系统中,为使现场采集的数据在突发性的掉电过程中不被丢失,且能长时间的保持,可采用32M位闪存芯片KM29N32000TS作为存储器。本文以AT89S51单片机为例介绍它在单片机系统中的硬件连接和软件编程方法。     

灌浆压力与地表抬动值的关系分析与应用

通过灌浆压力与地表抬动值的关系曲线,论证分析提高灌浆压力的可能性,以探求解决我国北方岩溶地区贯通性强、高倾角窄小裂隙发育集中、高负压水头影响等不利地质条件下的防渗帷幕灌浆问题。     

规范评估执业收费是提高评估质量的重要举措

我国评估行业经过十几年的发展,已经成为市 场经济的重要组成力量。目前我国已经拥有3300多 家评估机构,注册资产评估师18000余名,每年都 为市场经济活动提供大量的评估与咨询服务,受到 了社会的普遍重视。 然而,在评估行业的发展过程中,我们应该清 醒地看到我们面临的环境变化,不断规范自身的行 为,提高服务质量,进一步增强行业的社会公信力, 使行业不断进步,持续发展。其中,规范评估执业 收费是提高评估服务质量的重要措施之一。     

以组织发展与战略管理为背景的内部审计外包研究

内部审计现已逐渐被纳入企业战略管理的轨道,并为实现组织目标而发挥积极作用。企业根据组织发展目标和战略管理的要求而适当地将内部审计外包,亦可以站在战略的高度加以认识和展开。本文立足于组织发展与战略管理的背景,阐释了内部审计外包的原理依据及其对于组织经营和管理控制的多元影响,并据此提出内部审计外包的策略分析模式,进一步强调对外包之后委托代理双方的资源、能力、知识、信息等方面的有机整合,以保证内部审计外包的实施效果及其“增进组织价值”目标的实现。     

Emerging Market Firms' Internationalization: How Do Firms' Inward Activities Affect Their Outward Activities?

Research summary : In this study we examine how an emerging market firm's inward international activities (“inward activities”) are related to its outward international activities (“outward activities”) by focusing on the role of the firm's gain from its inward activities. On the one hand, drawing upon the organizational learning perspective, we propose that a firm's gain from inward activities may facilitate its outward activities through improving its resource fungibility. On the other hand, we draw upon the prospect theory to propose that a firm's gain from inward activities may hinder its outward activities by discouraging the firm's top managers from taking risks that are inherent in outward activities. With detailed data from a sample of manufacturing firms in China, we find empirical support for both lines of arguments . Managerial summary : Are emerging market firms with higher inward gain more likely to engage in outward internationalization activities? We argue that it depends upon how a firm uses its gain from inward activities. If the firm can improve its resource fungibility (particularly organizational resource fungibility) from its inward gain, it is more likely to engage in outward activities. If the firm cannot improve its resource fungiblity, the answer is no. Our findings suggest that for emerging market firms, internationalization is not just a path toward new markets; instead, it reflects how these firms exploit and explore what they have learned from their interactions with foreign firms at home in foreign markets. Therefore, managers must think more strategically on developing (organizational) resource fungibility from their inward activities . Copyright © 2017 John Wiley & Sons, Ltd.     

八角金盘果实色素成分的初步分离和鉴别

对八角金盘果实色素的成分进行初步的鉴别分析,利用纸色谱、薄层层析技术进行分离各组分,采用紫外-可见分光光度法确定各组分的最大吸收波长,进而推测其成分结构和类别。通过实验进行样品的测定和数据分析,对八角金盘果实色素的成分进行初步判断,其含量较高的两种组分为芍药色素-3-葡萄糖苷(Pn-3-glu)、锦葵色素-3-葡萄糖苷(Mv-3-glu)。     

The effects of exports on facility environmental performance: Evidence from a matching approach

This paper employs matching techniques to investigate the effects of facility export status on environmental performance. Using facility-level criteria air emission data in the US manufacturing industry, we find the industry-specific effects of export status on emission intensity, measured by emissions per value of sale. In some industries, there is consistent and robust evidence supporting the superior environmental performance of exporters relative to non-exporters in terms of emission intensity for all criteria air pollutants tracked. In other industries, we find weak evidence that exporters appear to have a higher emission intensity than non-exporters. This industrial heterogeneity in the effects of exporting on the environment is closely related to industrial characteristics including pollution abatement capital expenditure, trade costs, capital intensity and others.     

沈抚连接带“三生”空间的功能均衡性分析

随着人口增长和城市化发展,国土空间利用类型之间的竞争关系逐步增强,空间问题日益突显。自十八大报告明确提出"三生"空间以来,以生产、生活、生态划分的土地空间类型越来越被关注。该研究以沈抚连接带为研究区域,从土地空间的生产、生活和生态功能出发,构建"三生"功能评价指标体系。采用熵权法进行"三生"功能评价,利用GIS技术分析"三生"功能的空间格局。研究结果表明,"三生"功能均较强的街道具有较高的经济发展水平,如五三街道、李石街道,分值为64.96、54.59;生活功能较强的街道一般相邻城市,如五三街道、白塔街道、李石街道,分值为23.15、15.82、11.14,人均道路面积和公共服务设施完备度是主要影响因素;生态功能较高的街道多集中在浑河景观带和北部生态区,如高坎街道、满堂街道、东陵街道,分值为20.50、19.98、19.96,水面面积率、森林覆盖率和景观Shannon多样性是主要影响因素;生产功能较强的街道集中在建设快速区内,如李石街道、五三街道,分值为39.25、25.85,工业产值和服务业产值是主要影响因素。总体上看,受城市和经济建设活动影响强烈的街道的"三生"空间的功能不均衡性较为明显。     

中国玉米芯资源量估算及其开发利用

文章首先采用文献考证法,确定玉米芯产量与玉米产量之比值;在此基础上,采用副产品比重法,结合玉米产量统计数据,对全国及各省(市、自治区)的玉米芯产量进行估算,并分析其区域分布;通过实地调查,结合文献综述,从原料化、饲料化、基料化、能源化的角度,系统阐述我国玉米芯资源综合利用途径。结果表明:玉米芯产量与玉米产量之比为0.21;2013年全国玉米芯资源总产量为4 590万t,相当于全国秸秆总产量的4.90%或玉米秸秆总产量的19.10%。主要分布于东北地区与黄淮海地区,产量分别为1 586.61万t与1 185.41万t,两地区合计占全国玉米芯产量的60.42%。玉米芯是我国各类秸秆资源中高值化利用率较高的种类,其原料化、基料化、饲料化及能源化利用总量达到800万t左右。食用菌基料化、新型能源化利用是提高我国玉米芯综合利用水平的基本途径。多产品联产可有效地促进我国玉米芯工业原料化利用水平的不断提升。积极开展玉米芯发酵饲料技术推广与应用可为我国玉米芯资源高值化利用开辟新途径。