支持手机检索的技术方案

随着手机的日益普及，人们越来越希望能利用手机从Internet获取各种信息，本文介绍了满足这一需要的两种技术方案。     

一株以原油为碳源的Pseudomonas sp.菌化学趋向性研究

从某油田产出水中分离得到一株以原油为碳源的Pseudomonassp .菌 (假单孢菌 ) ,其化学趋向性运动能力中等 ,趋向性机理在本文中得以详细描述 .在可视化模型实验中可看到微生物向油水界面处的有序运动 ,而在有效的营养物浓度梯度范围内 ,化学趋向性运移速度与距油水界面的距离无关 ,受温度的影响很大 .并且在微观仿真模型实验中 ,可观察到细菌在孔隙壁和油、水三相交界处聚集 ,并讨论了该现象的形成原因及其对微生物采油的有利作用 .     

敏于思考勇于创新——由Fe(OH)2的制备实验培养创新思维

本文从Fe(OH)2的制备实验角度入手,论述了如何培养学生的创新思维.     

Knowledge-relatedness in firm technological diversification

This paper claims that knowledge-relatedness is a key factor in affecting firms’ technological diversification. The hypothesis is tested that firms extend the range of their innovative activities in a non-random way. Specifically, we test the extent to which firms diversify their innovative activities across related technological fields, i.e. fields that share a common knowledge base and rely upon common heuristics and scientific principles. The paper proposes an original measure of knowledge-relatedness, using co-classification codes contained in patent documents, and examines the patterns of technological diversification of the whole population of firms from the United States, Italy, France, UK, Germany, and Japan patenting to the European Patent Office from 1982 to 1993. Robust evidence is found that knowledge-relatedness is a major feature of firms’ innovative activities.     

Effects of user experience on user resistance to change to the voice user interface of an in‑vehicle infotainment system: Implications for platform and standards competition

This study examines the effects of user experience on user resistance to change—particularly, on the relationship between user resistance to change and its antecedents (i.e. switching costs and perceived value) in the context of the voice user interface of an in-vehicle infotainment (IVI) system. This research offers several salient findings. First, it shows that user experience positively moderates the relationship between uncertainty costs (one type of switching cost) and user resistance. It also negatively moderates the association between perceived value and user resistance. Second, the research test results demonstrate that users with a high degree of prior experience with the voice user interface of other smart devices exhibit low user resistance to change to the voice user interface in an IVI system. Third, we show that three types of switching costs (transition costs, in particular) may directly influence users to resist a change to the voice user interface. Fourth, our test results empirically demonstrate that both switching costs and perceived value affect user resistance to change in the context of an IVI system, which differs from the traditional IS research setting (i.e. enterprise systems). These findings may guide not only platform leaders in designing user interfaces, user experiences, and marketing strategies, but also firms that want to defend themselves from platform envelopment while devising defensive strategies in platform and standards competition.     

高职高等数学"2+1"教学模式研究与实践

针对目前高职数学课程教学内容体系一成不变,教学方式单一,教学模式陈旧的现状,高职院校要转变教学思想,改革课程体系,以应用能力培养为主线,通过构建“2＋1”（二年理论教学＋一年实践教学）模式来提高教学效率,并通过改革教学方法和教学手段以保证“2＋1”教学模式的顺利实施。     

Habilitationsverfahren; Gutachten; Beweiswürdigung

Der Umstand, dass fünf Gutachten zum Ergebnis gelangt seien, die im Habilitationsverfahren vorgelegten Arbeiten würden die wissenschaftliche Qualifikation des Habilitanden iSd § 28 Abs 5 UOG 1993 erweisen, w?hrend nur eines eine gegenteilige Auffassung vertrete, besagt für sich nichts über die inhaltliche Richtigkeit der einen oder der anderen Auffassung. Eine Bindung der Beh?rde an die "klare Mehrheit" der in den eingeholten Gutachten vertretenen Auffassung besteht nicht. Vielmehr ist iSd § 45 Abs 2 des im Habilitationsverfahren anzuwendenden AVG der im Wege der Beweiswürdigung zu ermittelnde "innere Wahrheitsgehalt" der Ergebnisse des Beweisverfahrens ma?geblich, wobei die bei der Beweiswürdigung ma?gebenden Erw?gungen in der Begründung des Bescheides klar und übersichtlich zusammenzufassen sind.     

Tribology Performance and Adhesive Strength Evaluation of TiAlSiN Coating

Scratch test and friction test were performed to evaluate the internal and external interface behaviors of TiAlSiN coating, respectively. The critical compressive and shearing stress of coating failure during scratch test were calculated and the values are 30.84 MPa and 4.98 MPa respectively. The average friction coefficients of TiAlSiN coating against 2Cr12Ni4Mo3VNbN steel are 0.70 (sliding speed 50 m/min), 0.63 (sliding speed 100 m/min), and 0.81 (sliding speed 150 m/min). The elements diffusion was analyzed by EDS. Al and Si element of coating material diffuse to the steel disc, except Ti element. The oxidation decreases with the increase of sliding speed, but the adhesion increases with the increase of sliding speed. More Al element diffuses to the steel disc at the high sliding speed, but the diffusion of Si element keeps almost constant at different sliding speeds.     

TiO2粉末多晶X射线衍射Rietveld全谱拟合定量相分析

采用Rietveld全谱拟合的方法对TiO2粉末中锐钛矿和金红石进行定量分析,通过标准样品数据和计算结果进行比较,对该方法的准确性、重复性以及普适性分析,计算结果与标准样品数据符合良好.该方法具有快速准确、成本低、可重复的特点,在高纯度矿物产品工业中将具有广阔的应用前景.     

基于AT89C55的单工无线呼叫和数据传输系统设计

基于STC89C55,使用模拟调频技术,设计了一种单工无线呼叫数据传送系统,在30～40 MHz频段上,实现了话筒输入和线路输入语音信号的小功率远距离单工发送和接收.其数据通信采用FSK调制方式,主、从机可实现智能控制通信,可连接多达256个从站,构成一点对多点的单工无线呼叫系统.