浅述农作物病虫害防治标准

结合日本的农作物病虫害防治标准，浅述实施农作物病虫害防治标准，可使农作物生产实现优质安全，高产。     

Optimal management of annual ryegrass (Lolium rigidum Gaud.) in phase rotations in the Western Australian Wheatbelt*

Lucerne (Medicago sativa L.) helps to prevent soil salinisation in the Western Australian Wheatbelt by reducing recharge to saline water tables. There is broad consensus, though, that it is not sufficiently profitable to motivate producers to plant it at the intensity at which considerable off‐site benefits would be conferred. This paper employs a multiple‐phase optimal control model to explore the value of this perennial pasture for the management of herbicide‐resistant annual ryegrass (Lolium rigidum Gaud.) in a crop–pasture rotation, given the difficulty of observing this value in practice. The availability of selective herbicides for efficient weed control is found to determine whether or not it is profitable to adopt lucerne pasture under optimal management. Herbicide resistance requires producers to employ costly, non‐selective treatments for in‐crop weed control. Thus, it motivates the adoption of perennial pasture in which cost‐effective forms of control can be implemented. Moreover, this result is robust to feasible changes in the current economic environment.     

几株益生乳杆菌耐药性的研究

采用药敏纸片法研究了戊糖乳杆菌、瑞士乳杆茵、干酪乳杆茵等7株益生乳杆茵对11种抗生素的敏感性,结果发现,7株乳杆茵均耐受多种抗生素。对戊糖乳杆茵LP-B耐四环素基因(tetM,tetS和tetW)的初步研究表明,该四环素耐受基因不位于基因组DNA上,是否存在于质粒上及其该基因的转移性等尚有待于进一步研究。     

电场对荞麦种子抗旱性影响

通过研究不同电场处理荞麦种子在干旱胁迫持续加重的条件下对其幼苗抗旱性的影响。给出了荞麦种子经不同电场处理后的生物效应及抗旱性对比。结果表明:不同电场处理条件下的荞麦种子,其幼苗在干旱胁迫的不同时期适应性反应存在一定差异。适宜电场处理能够促进荞麦幼苗水分胁迫条件下体内可溶性糖的积累,提高超氧化物歧化酶的活性、减少了膜脂过氧化产物丙二醛的积累。说明电场处理可使膜结构与功能在水分亏缺下得到保护,促进了种子和幼苗的代谢水平,从而提高了荞麦的抗旱性。     

深松机深松铲动力学分析

深松铲所受阻力是深松机重要的阻力来源,本文介绍了典型深松铲的结构形式,以凿型深松铲为例运用动力学理论对深松铲进行力学分析,建立了深松铲工作阻力数学模型,确定了深松铲的工作参数、土壤类型、土壤物理机械性质等因素与深松铲工作阻力之间的函数关系。分析了深松铲的铲面倾角、工作速度、松土深度等因素对深松机工作阻力的影响,以寻求深松铲最佳的工作参数。     

柯韦什的"虚荣心"与人的尊严--读凯尔泰斯小说《无命运的人生》

在纳粹集中营里，一个囚犯有没有维护自己尊严的可能？这是凯尔泰斯在小说《无命运的人生》中想回答的一个问题。作者通过对主人公柯韦什的“虚荣心”，及由此产生的一系列行为和心理活动的分析和描述，向我们表明：尽管在集中营过着非人的生活，忍受着极大的屈辱，主人公并未因此而放弃人的尊严。他一直在自觉不自觉地，用或明显或隐蔽的方式，来反抗野蛮暴力对人的尊严的取缔。     

Agency, Bid Resistance and the Market for Corporate Control

In this paper we investigate the effects of post-bid defence activity for a sample of takeover bids in the UK. We find that most of the defences investigated promote the interests of target managers by significantly lowering the probability of bid success. We also find that most of the defences promote the interests of shareholders by increasing wealth gains by an amount that varies between 9% and 14%. These results suggest that bid resistance is to the mutual benefit of the managers and shareholders of target firms. This conclusion is in line with recent developments in agency theory.     

Institutionalized Resistance to Organizational Change: Denial, Inaction and Repression

An extensive theoretical and research literature on organizational change and its implementation has been accumulating over the past fifty years. It is customary in this literature to find resistance to change mentioned as an inevitable consequence of organizational change initiatives. Yet there has been little discussion of the nature and forms of resistance that is institutionalized in organizational structure and processes. Furthermore, organization development perspectives on organizational change address management-initiated change, but not change proposed by advocates for the powerless and disadvantaged. Focussing on institutionalized resistance from the standpoint of the advocate of fundamental change, this discussion proposes a typology consisting of a sequence of forms of active resistance to change, from denial through inaction to repression. The typology is illustrated by referring to responses of organizational decision makers to the efforts of employment equity change agents to address issues of systemic discrimination in the work place. The purpose of the typology is to assist change advocates, such as equality seekers, to name, analyze and think strategically about the institutionalized resistance they encounter, and about effective responses to the resistance.     

Salesperson's innovation resistance and job satisfaction in intra-organizational diffusion of sales force automation technologies: The case of South Korea

One of the rapidly growing areas in industrial marketing is the application of sales force automation (SFA) technologies to help improve the efficiency of the sales force task. What is often overlooked is that there are some potential negative effects related to SFA technologies that arise when these innovations are forcefully adopted on the individual salesperson. This study empirically examines the psychological and social antecedents of salespeople's resistance toward SFA technologies in South Korea. Unlike previous studies that only looked at adoption, this studies adds to the literature on SFA technologies by looking at resistance toward innovation in the post-adoption or intra-organizational diffusion stage. This study looks at the direct and indirect relationships between innovation resistance and some key constructs such as job satisfaction, job performance, self-efficacy, group-efficacy, innovativeness, and peer usage. This study represents also one of the very few empirical studies conducted on sales force behavior in South Korea and as such may offer some insights on sales force management in collectivist cultures.     

竹浆纤维针织物的耐磨性研究

通过实验研究了7种不同混纺比的纬平针组织竹浆纤维针织物的耐磨性。应用马丁代尔实验方法和实验仪对这些针织物的耐磨性进行了测定。根据织物在摩擦转数为5 000,7 500,10 000,15 000和25 000的质量损失率来评价织物的耐磨性。通过对实验数据的统计分析,得出7种织物的耐磨性在不同的摩擦转数都存在着显著性差异;织物的质量损失与摩擦转数之间存在着重要的、显著的正相关关系,织物的质量损失随着摩擦转数的增加而加大;纱线细度对织物耐磨性具有较大的影响。