MATCOM与Visual C++的显示接口浅析

针对利用MATCOM工具辅助程序设计时必须面对的界面问题,分析了在VC环境里调用MATCOM矩阵函数的2种主要显示途径——控制台(console)界面和图形窗口(GUI)界面的特点,并据此比较了两者各自不同的适用场合。详细介绍了MAT-COM的输出句柄函数以及在VC中的设置方法,最后给出2个详细的调用例程来说明在GUI界面下使用MATCOM函数的方法,改变了以往只能在控制台显示信息的模式。     

电路分析仿真平台的GUI设计

利用Matlab的Simulink工具包对典型的二阶电路进行建模、仿真,并建立可视化图形GUI界面,建立仿真模型和界面的联系,通过界面参数来控制仿真过程,并把仿真结果按照用户要求的格式显示在图形用户界面中,操作直观方便。     

汽（气）缸稳定性计算程序GUI设计

介绍汽（气）缸稳定性的通用计算方法，阐述汽（气）缸接口力及力矩的合成与分解。设计计算程序流程图，基于该流程图在MATLAB环境下完成了汽（气）缸稳定性计算程序GUI设计。实例验证，该GUI界面使用方便，计算精度满足工程需要。     

稠油高效低成本化学添加剂增产技术研究

AS是一种新型稠油化学添加剂,与油田现场广泛应用的重烷基苯磺酸盐相比,它具有耐温性能好、发泡能力强、加量少、成本低的特点。当浓度为0.5%时,其表面张力≤28Nm/m,界面张力≤0.025Nm/m,应用前景广阔。     

基于MATLAB的固定床煤气化过程数值模拟系统的设计与实现

文章开发的固定床煤气化过程数值模拟系统基于Matlab的GUI功能,根据建立的数学模型求解常微分方程组,并利用打靶法从底部开始计算固定床气化炉的每个微元体。实例表明:该系统使固定床煤气化过程的计算更加方便、高效。     

英特尔VC的导向

在企业VC大行其道的今天,领先一步的英特尔VC做出了良好的示范效应。"在全世界,目前我们还找不到能够与英特尔投资(Intel Capital)相提并论的企业VC。"英特尔公司高级副总裁兼英特尔投资总裁苏爱文有些骄傲地说。     

基于预测模糊的供暖系统控制算法研究

针对复杂的供暖系统中存在的大时滞、大惯性和不确定性,引入预测模糊控制算法对该系统进行调节。预测模糊控制算法是将预测控制和模糊控制两种控制算法优点充分结合的一种控制算法。通过Matlab仿真实验表明,在调节供暖系统中使用预测模糊控制比单纯使用预测控制能够产生更好的调节效果。     

技术开发评价初探

技术开发评价的目的,无非一是提高技术开发的成功率;二是使所开发的技术在技术上、经济上和社会效益上达到最优组合。为此,技术开发初期,对方案选择的评价是至关重要的。本文阐述了利用专家估算时间价值评价法结合综合评价法来对方案进行选优的一种评价方法。一、专家估算时间价值评价法对于一项技术的开发,首先要确定是采取国内开发方式还是引进开发方式,这里通过专家对一些指标进行估算。见表一。     

图形界面在信息时代的发展趋势研究

图形用户界面(以下简称GUI)从最初的Lisa系统到现在的手持终端时代,再到未来的产品服务体验时代,对其设计要素和关注点已经发生了很大变化,但不管是传统的界面还是触摸屏的大行其道还是未来新技术的君临天下,传统图形界面的精髓始终是交互设计的核心理念,在新技术新交互媒介面前,图形界面设计也不会完全消失,而会作为综合交互媒介的一部分存在,未来CUI也会跟随时代步伐发生新的变化。     

棉酚及其衍生物抗肿瘤活性研究进展

棉酚是从锦葵科植物种子中提取的一种天然产物,研究发现,棉酚,特别是左旋(-)-棉酚能够抑制肿瘤细胞增长,诱导肿瘤细胞凋亡,抑制细胞端粒酶的活性。对其衍生物醋酸棉酚、Apogossypol、Apogossypolone的研究表明,该类化合物能够靶向Bcl-2家族抗凋亡蛋白,发挥其抗癌活性,是一类潜在的新型抗肿瘤药物。本文将介绍近年来棉酚及其衍生物抗癌活性的研究现状。     

基于S3C2410X的城市污水处理系统的研究

设计的城市污水处理控制系统以ARM920T处理器S3C2410X为核心,并根据污水实时处理的性能要求,设计硬件电路模块,完成了模数转换电路,串行接口、用户接口,存储系统设计和基本的外围电路硬件电路系统的设计。并对实时嵌入式操作系统μCOS-Ⅱ进行移植,使系统具备了执行多任务的能力。利用嵌入式实时系统的优势,实现了多任务间通信,解决了系统的不断开发、维护困难这一弊病。同时,还在μCOS-Ⅱ系统的基础上,移植了嵌入式图形界面μC/GUI并设计用户界面。     

基于S3C2410的嵌入式用户图形界面软件的设计

介绍了嵌入式微处理器S3C2410X及其相关显示模块TFT_LCD,包括S3C2410X与LCD的接口电路、LCD控制器及其特殊功能寄存器部分。详细分析了如何利用ARM9的LCD控制器进行LCD的驱动设计。在此基础上,将其与μC/GUI图形用户界面整合在一起,形成一个小巧实用的嵌入式软件开发平台。     

A real-time information system for multivariate statistical process control

Statistical process control (SPC) is widely used in process industries to monitor variations in process attributes. Typically, automatic devices capture a multitude of measurements on process and product characteristics every few seconds. Operators and engineers commonly monitor only a small subset of these. Multivariate SPC has been proposed to fully utilize the available data, however, interpretation of multivariate information is often too complex for most line operators. This paper describes the design and implementation of a real-time multivariate process control system that features a graphical user interface (GUI) and provides useful information for both line operators and engineers. The information system described in this paper should provide large-scale manufacturers with better access to information for identifying opportunities in continuing to improve processes performance and business competitiveness.     

Status in a strange land? Context‐dependent value of status in cross‐border venture capital

Research Summary: While recent literature has depicted status as an intangible asset that is firm‐specific and mobile, we have a limited understanding of whether status confers advantage in a way similar to other intangible assets. This study examines the macro‐structural contingencies that influence the marginal value of firm status as firms expand to new markets. Building on the literatures on status and social approval assets, as well as globalization and international management, we hypothesize that two conditions influence how valuable home‐country status will be in a given host country: the interconnectedness of the home and host countries, and their relative position in the global network. We test our hypotheses in a study of 187 venture capital (VC)‐backed biotechnology ventures in 19 countries between 1990 and 2006. Managerial Summary: Startups typically prefer high‐status VC investors for endorsements, network connections, and resources. One might expect the benefits of high‐status VCs to be even higher when they invest across borders. Yet, we show that status is ingrained in context, and that the performance advantage of partnering with high‐status cross‐border VC firms depends on the relationship between the country of the VC firm and that of the startup. We find that, when the VC industries in the two countries are more connected, the positive effect of cross‐border VC firm status on successful exit is amplified. However, when the VC firm comes from a more central country than the startup, the benefits of VC firm status are less pronounced and vice versa.     

An integrated distribution routing model in multi-supply center system

A distribution routing problem with time constraint is one of the important problems in distribution and supply center management. This research is concerned with an integrated distribution routing problem for multi-supply centers based on improved genetic algorithm and graphical user interface (GUI)-type programming. In this research, we proposed a method based on a three-step approach: in step 1 a sector clustering model is developed to transfer the multi-supply center problem to single supply center problems which are easier to be solved; in step 2 we developed a vehicle routing model with time constraints and in step 3 we developed a GA-TSP model which can improve the vehicle routing schedules. The objective of the problem is to minimize the logistic cost for a set of customers without being tardy or exceeding the capacity or travel time of the vehicles. For computational purpose, we developed a GUI-type computer program according to the proposed methods and the sample outputs show that the proposed method is very effective on a set of standard test problems, and it could be potentially useful in solving the distribution routing problems.     

Commercializing new technologies: consumers' response to a new interface

Successful commercialization of new technologies is the riskiest and most rewarding form of new product development activity. New technologies are often commercialized using innovative interfaces that determine how consumers interact with a new product to obtain its functionality. Consumers' perception of uncertainty about the performance of a novel interface is a key issue in the acceptance of new products involving new interfaces. Specifically, when firms commercialize a new interface, they face two major challenges: First to identify the optimal functionality for the new interface, and second, to effectively communicate with consumers in order to reduce uncertainty about the performance of the new interface and increase adoption intentions. Despite the theoretical and managerial importance of research on consumers' response to a novel interface, very little empirical research has been conducted in this area. Building on prior research on new product development, human‐computer interaction, and consumer decision‐making, this article examines the factors that influence consumers' judgments of uncertainty about the performance of a new interface and consumers' adoption intentions. Specifically, we conducted an experiment to investigate the effect of the newness of the functionality of a new product and the effect of imagery on consumers' uncertainty about the performance of a novel interface and consumers' adoption intentions. Our results show that consumers perceive lower uncertainty about the performance of a new interface and higher intentions to adopt a new product when the new interface is introduced with a new (vs. pre‐existing) functionality. Furthermore, our results suggest that when a new interface is introduced with a new functionality, imagining the product in use increases consumers' uncertainty about the performance of the new interface and decreases their intention to adopt the new product. In contrast, when a new interface is introduced with a pre‐existing functionality, imagining the product in use decreases consumers' uncertainty about the performance of the new interface and increases their intention to adopt the new product. Our findings provide valuable guidelines for marketers in formulating new product development and communication strategies for new products involving a new interface. © 2002 Elsevier Science Inc. All rights reserved.     

Do VCs matter? the importance of owners on performance variance in start‐up firms

Adding to the corporate effect literature, we study the effect of owners on firm performance in a new context, that of venture capital firms (VCs) and the start‐up firms in which they invest. After discussing the effect that VC ownership can have on start‐ups, we estimate that start‐up‐specific, owner (VC), and year effects account for significant variance in performance (26.3 percent, 11.2 percent and 3.7 percent, respectively). The effects of industry and investment stage are not statistically different from zero. We also provide an analysis that separates the owner effect into two components: a selection component—which impacts investment—and a management component—which explains significant variance in performance. By examining the owner effect in a different institutionalized form of governance—that of the start‐up and its relationship to VC owners—our study also contributes to an understanding of the ‘ownership’ effect in the strategy literature more generally. Copyright © 2008 John Wiley & Sons, Ltd.     

VC聚磷酸酯的合成

为了制备不同效价的VC聚磷酸酯,对VC与三偏磷酸钠在水介质中反应制备效价为40%的VC聚磷酸酯的工艺进行了研究,在小试及放大试验的基础上,进行了工业性试生产。当n(VC)∶n(三偏磷酸钠)为1∶1.1,w(催化剂)为10%、溶液pH值为9时,VC聚磷酸酯的效价高于40%,收率为73.8%。     

Form or substance: the role of business plans in venture capital decision making

We explore a well‐known instance of fast decision making under high uncertainty, venture capital (VC) opportunity screening. We analyze a sample of 722 funding requests submitted to an American VC firm and evaluate the influence of the form of the submission and content of business planning documents on VC funding decisions. We improve on prior literature by a) using a large sample of known representativeness, b) relating request characteristics to actual VC decisions, and c) developing an inferential logic that takes account of the multiple sources of information to which VCs have access. We find that the presence of planning documents and some information contained therein are weakly associated with VC funding decisions. Based on our inferential strategy, we find that this information is learned independently of its inclusion in the business planning documents. Copyright © 2009 John Wiley & Sons, Ltd.