图书出版形态:从文化到市场价值

主要从图书的出版形态来着重论述新书的选题策划、选题质量、选题实用性,并且实实在在的阐明图书的文化价值、历史价值和交流价值。     

基于MSComm控件的串行通信方法及实现

串行接口由于其具有连接简单、使用方便、数据传递可靠等优点，在工业实时控制系统中得到了广泛应用。本文探讨了基于Windows98平台上利用Microsoft Communica-tions Control控件编写串行通信程序的方法，并结合开发实践，阐述了用C Builder5语言实现了基于ActiveX技术的串行通信编程的一般步骤。实践表明，该方法简单、可靠，从而大大缩短实时控制软件的开发周期，减少程序员的工作量。     

基于USB通讯的控制系统设计方案

本研究设计了一个基于通用串行总线(USB)的通讯控制系统。介绍了USB控制模块与单片机、PC机之间进行数据通讯的原理、特点及硬件的实现方法;阐述了通过USB接口实现对外界参数的数据采集分析及对多种外部设备控制的原理;对USB通讯软件的设计思想及编程方法进行了详细分析,并给出了USB接口驱动程序的开发工具及流程。     

Factors determining the adoption of laser land leveling in the irrigated rice–wheat system in Haryana,India

Laser land leveling has been increasingly adopted in the irrigated rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping system in the state of Haryana (India), located in the north-western Indo-Gangetic Plains. Still, many farmers have applied it to only a fraction of their land. In this study, we used data collected from 621 farm households in Haryana and applied a double-hurdle model for assessing the factors that determine the adoption and intensity of laser-leveling technology. The results show that large land holders are more likely to laser level their farm land; however, we found a negative association between land holdings and the proportion of laser-leveled land. Information about technology through farmer-to-farmer communication and through private traders, participation in agricultural training and membership in local agricultural institutions increased both the likelihood and the intensity of adoption. Our findings call for a closer collaboration among the various stakeholders, specifically to promote farmer-to-farmer communication through increased participation in local institutions and increase the rate of adoption of laser leveling technology.     

Honey Bees (Hymenoptera: Apidae) Decrease Foraging But Not Recruitment After Neonicotinoid Exposure

Honey bees (Linnaeus, Hymenoptera: Apidae) are widely used as commercial pollinators and commonly forage in agricultural and urban landscapes containing neonicotinoid-treated plants. Previous research has demonstrated that honey bees display adverse behavioral and cognitive effects after treatment with sublethal doses of neonicotinoids. In laboratory studies, honey bees simultaneously increase their proportional intake of neonicotinoid-treated solutions and decrease their total solution consumption to some concentrations of certain neonicotinoids. These findings suggest that neonicotinoids might elicit a suboptimal response in honey bees, in which they forage preferentially on foods containing pesticides, effectively increasing their exposure, while also decreasing their total food intake; however, behavioral responses in semifield and field conditions are less understood. Here we conducted a feeder experiment with freely flying bees to determine the effects of a sublethal, field-realistic concentration of imidacloprid (IMD) on the foraging and recruitment behaviors of honey bees visiting either a control feeder containing a sucrose solution or a treatment feeder containing the same sucrose solution with IMD. We report that IMD-treated honey bees foraged less frequently (–28%) and persistently (–66%) than control foragers. Recruitment behaviors (dance frequency and dance propensity) also decreased with IMD, but nonsignificantly. Our results suggest that neonicotinoids inhibit honey bee foraging, which could potentially decrease food intake and adversely affect colony health.     

21世纪高校图书馆服务新理念

本文从三个方面阐述了服务是图书馆的天职,针对如何创新服务观念,改进图书馆的服务工作提出了自己的观点。     

英语委婉语的功用及使用范围

委婉语是英语中一种常见的重要的修辞手段。作为英语学习者,正确把握委婉语可以提高修辞素养,开阔文化视野,增强阅读理解及交际能力,从而提高英语学习者的跨文化交际能力。本文以例证的方式论述英语委婉语的使用范围、表达方式及其功用。     

浅论高校图书馆流通部的人本化服务

进入知识经济时代，竞争进入到各个行业。图书馆流通部要想在激烈的竞争中生存和发展就必须不断地充实和完善自已的各项功能，实行人本化服务．     

浅析英语口语教学

论述了英语口语教学，介绍了当代学好英语，特别是英语口语的重要意义，在英语教学的实践中，总结出学好英语口语，首先要进行听力训练，掌握辨别音素、语音及语调的基本要素，其次在口语的练习中，还要多学、多读、多用、多实践，人而提高英语口语的会话水平。     

新建管道通信干线的传输容量

已建设和拟建设的管道专用通信网，因其容量小（均为３４Ｍｂｉｔ／ｓ）且主要用于电话业务，已不适应计算机网络通信、电视会议、多媒体信息传输等业务开展的需要，扩大新的通信干线容量势在必行。邮电部、中国联合通信总公司均采用了同步数字等级（ＳＤＨ）制，以取代准册步数字等级（ＰＤＨ）制，扩大其通信系统容量，面向全国开放。而石油专用网也具备了向同步数字等级（ＳＤＨ）制过渡的条件，建议再建长途通信干线时，其容量还