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LDEO(Lamont-Doherty Earth Observatory)软件是基于逆方法原理研发的LADCP处理软件。该软件由上百个MatLab m文件组成,不便于用户快速彻底掌握。本文概括了该软件的主要思路,并对该软件中的主要步骤及相关m文件的具体过程进行了详细说明。 相似文献
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David Nicholas Paul Huntington Hamid R. Jamali Anthony Watkinson 《Information processing & management》2006
The article employs deep log analysis (DLA) techniques, a more sophisticated form of transaction log analysis, to demonstrate what usage data can disclose about information seeking behaviour of virtual scholars – academics, and researchers. DLA works with the raw server log data, not the processed, pre-defined and selective data provided by journal publishers. It can generate types of analysis that are not generally available via proprietary web logging software because the software filters out relevant data and makes unhelpful assumptions about the meaning of the data. DLA also enables usage data to be associated with search/navigational and/or user demographic data, hence the name ‘deep’. In this connection the usage of two digital journal libraries, those of EmeraldInsight, and Blackwell Synergy are investigated. The information seeking behaviour of nearly three million users is analyzed in respect to the extent to which they penetrate the site, the number of visits made, as well as the type of items and content they view. The users are broken down by occupation, place of work, type of subscriber (“Big Deal”, non-subscriber, etc.), geographical location, type of university (old and new), referrer link used, and number of items viewed in a session. 相似文献
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本文分析了正方法,查询修正中的用户信息行为,吸收网页抓取、检索与浏览并重的思想,综合考虑用户Web搜索过程中的行为特点、查询修正所用词汇的可用来源,给出一个新的面向Web搜索的查询修正解决方案. 相似文献
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种业企业选择植物品种权的影响因素分析——基于14省市种业企业问卷调查 总被引：2，自引：0，他引：2
基于14省市种业企业问卷调查,综合运用SPSS统计软件,对种业企业选择植物品种权的影响因素的重要程度进行描述性统计分析。分析认为:种业企业选择植物品种权的主要来源是农业科研院所和农业高校;影响植物品种权人信誉度的重要因素为品种权人的科研实力、品牌与知名度;植物品种权产权完整性和新品种质量是评价植物品种权产权属性的重要因素;交易成本高低和交易信息完善程度是评价植物品种权交易平台与中介的重要因素;合同履约率和品种权价格高低是影响植物品种权交易合同实现情况的重要因素;新品种质量与增产潜力是影响新品种开发与市场竞争性的重要因素。据此提出相应政策建议,以激励植物品种权的创造、促进植物品种权的快速交易与有效实施。 相似文献
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One difficult problem in information retrieval (IR) is the proper interpretation of user queries. It is extremely hard for users to express their information needs in a specific yet exhaustive way. In an effort to alleviate this problem, two theoretical models have been proposed to utilize user characteristics maintained in the form of a user profile. Although the idea of integrating user profiles into an IR system is intuitively appealing, and the models seem viable, no research to date has established a foundation for the roles of user profiles in such a system. Aiming at the investigation of the roles of user profiles, therefore, this study first identifies and extends various query/profile interaction models to provide a ground upon which the investigation can be undertaken. From a continuum of models characterized on the basis of interaction types, metrics, and parameters, nearly 400 models are chosen to investigate the “model space.” New measures are developed based on the notion of user satisfaction/frustration. In addition, three different criteria are used to guide users in making judgments on the quality of retrieved items. Analysis of the data obtained from the experiments shows that, for a wide variety of criteria and metrics, there are always some query/profile interaction models that outperform the query alone model. In addition, preferable characteristics for different criteria are identified in terms of interaction types, parameters, and metrics. 相似文献
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用户ERP消化吸收水平的提升和ERP系统价值的实现依赖于用户持续不断的学习。本文通过多案例研究方法旨在探讨用户面向ERP消化吸收的个体学习规律及理论。研究发现,面向ERP消化吸收的用户学习分为培训、适应、常规和扩展四个阶段,且学习情境的强制力度不断减弱;ERP用户通过实践式、沟通式、支持式和投资式学习四种学习方法获取系统知识,其中实践式和沟通式学习比支持式学习更有效;在同一学习阶段,不同类型ERP用户的学习方法趋同,但在不同阶段具有差异性;用户主动参与、企业强制和机遇是决定工作用户能否成长为熟练用户和VIP用户的重要因素,在其作用下ERP用户具有8种不同的成长路径。 相似文献
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Matlab is a high technology numerical computation and visualization software that launched by MathWorks company in1982.It combines numerical analysis,matrix computation,signal processing and graphical display,and constitutes a convenient,friendly user software interface.It includes ToolBox that can solves many different types of problems,so we can solve problems of Specific subject. 相似文献
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Consumers’ software purchase decisions are influenced both by online reviews and by their experiences with free samples provided by firms. This paper empirically investigates the differential effects of online reviews (user and editor ratings) on consumers’ sample downloading behavior, using a dataset drawn from a large software free sampling website CNET.com. Our findings extend the previous research by suggesting that information disclosure levels of free samples (indicated by licenses) moderates the impacts of online reviews on consumers’ sample downloads. For samples that disclose a great level of information, higher user ratings can increase downloads; otherwise, higher user ratings fail to increase downloads. When both user and editor ratings are available to consumers, only user ratings can increase sample downloads. The findings can be explained by consumers’ two-stage information process whereby consumers first refer to online reviews and then determine whether to sample software. This study provides practical implications on the design of information disclosure channel and offers suggestions for firms regarding how to select and apply sample licenses. 相似文献
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This article describes the architecture of a generic platform for building distributed locational systems over stand-alone applications. The proposed platform integrates ideas and technology from areas such as distributed and parallel databases, transaction processing systems, and workflow management. The main contribution of this research effort is to propose a “kernel” locational system providing the essentials for distributed processing and to show the important role database technology may play in supporting such functionality of workflow management. These include a powerful process management environment using the principles of the Problem Structuring Methodology (PSM), which it created as a generalization of workflow ideas and incorporated transactional notions such as spheres of isolation, atomicity, and persistence and a transactional engine enforcing these “quality guarantees” based on the nested and multi-level models. It also includes a tool kit providing externalized database functionality enabling physical database design over heterogeneous data repositories. 相似文献
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Java智能卡系统软件的安全性研究 总被引：1，自引：0，他引：1
安全性是Java智能卡最重要的指标之一。本文根据Java智能卡的应用特点,从系统软件的角度对Java智能卡的安全性进行了详细的研究,着重研究了多个应用共存于Java智能卡时确保数据安全的防火墙结构,尽可能地保证卡内数据完整性的原子性和事务处理机制,以及利用密码技术保证卡内动态下载的Applet安全性的措施,并提出了相应的设计方案。 相似文献
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Downloading software via Web is a major solution for publishers to deliver their software products. In this context, user interfaces for software downloading play a key role. Actually, they have to allow usable interactions as well as support users in taking conscious and coherent decisions about whether to accept to download a software product or not. This paper presents different design alternatives for software download interfaces, i.e. the interface that prompts the user if he wishes to actually complete its download, and evaluates their ability to improve the quality of user interactions while reducing errors in user decisions. More precisely, we compare Authenticode, the leading software download interface for Internet Explorer, to Question-&-Answer, a software download interface previously proposed by the authors Dini, Foglia, Prete, & Zanda (2007). Furthermore, we evaluate the effect of extending both interfaces by means of a reputation system similar to the eBay Feedback Forum. The results of the usability studies show that (i) the pure Question-&-Answer interface is the most effective in minimizing users incoherent behaviors, and (ii) the differences in reputation rankings significantly influence users. Overall results suggest guidelines to design the best interface depending on the context (brand reputation and product features). 相似文献
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本文将数据挖掘聚类分析技术融合到ETC运营管理过程中,分析了ETC交易数据三种关键的特征数据并构建了数据模型,采用轮廓系数对聚类结果进行科学评估。在聚类分析结果的基础上,对ETC用户进行二维分类,提出ETC的推广营销和ETC系统维护管理的方法和建议。 相似文献
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Sven H. Koch Rumyana Proynova Barbara Paech Thomas Wetter 《Ethics and Information Technology》2013,15(1):45-61
Software users have different sets of personal values, such as benevolence, self-direction, and tradition. Among other factors, these personal values influence users’ emotions, preferences, motivations, and ways of performing tasks—and hence, information needs. Studies of user acceptance indicate that personal traits like values and related soft issues are important for the user’s approval of software. If a user’s dominant personal value were known, software could automatically show an interface variant which offers information and functionality that best matches his or her dominant value. A user’s dominant personal value is the one that most strongly influences his or her attitudes and behaviors. However, existing methods for measuring a user’s values are work intensive and/or interfere with the user’s privacy needs. If interface tailoring for very large groups of users is planned, value approximation has to be achieved on a large scale to assign individualized software to all users of the software. Our work focuses on approximating the dominant values of a user with less effort and less impact on privacy. Instead of probing for a user’s values directly, we explore the potential of approximating these values based on the user’s preferences for key tasks. Producing tailored versions of software is a separate topic not in the focus here. In this paper we rather describe a method to identify user values from task preferences and an empirical study of applying parts of this method. We are proposing the method in this paper for the first time except for a preliminary version orally presented at a workshop. The method consists of a research process and an application process. In the research process a researcher has to identify key tasks occurring in a context under investigation which have a relationship to personal values. These key tasks can be used in the application process to approximate the dominant values of new users in a similar context. In this empirical study we show that the research process of our method allows us to determine key tasks which approximate values in the shared context of nursing. The majority of the nurses were found to have one of the three following dominant values: benevolence, self-direction, or hedonism. Data confirmed common expectations: that nurses with the value of benevolence, when compared to all other nurses, had a higher preference for tasks which helped people immediately or improved their circumstances of the treatment. In relation to all other nurses, participants with self-direction disliked tasks which affected their personal freedom, and users with hedonism had a lower preference for tasks which involved physical work and preferred tasks which promised gratification. Our findings advance measurement of personal values in large user groups by asking questions with less privacy concern. However, the method requires substantial efforts during the initial research process to prepare such measurements. Future work includes replicating our method in other contexts and identifying value-dependent tasks for users with other values than the three values our empirical study mainly focused on. 相似文献
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Ricardo Colomo-PalaciosAuthor VitaeEduardo FernandesAuthor Vitae Pedro Soto-AcostaAuthor Vitae Marc SabbaghAuthor Vitae 《International Journal of Information Management》2011,31(4):395-399
Software must evolve in order to adapt to new demands and scenarios. In the case of packaged software that can be customized, this evolution implies the maintenance of both out-of-the-box and customized functionality alike. New user interface technologies provide a way to interact with applications that software vendors are forced to incorporate in order to meet new user and market requirements. Packaged software vendors are facing software evolution processes in order to attract more customers and conserve the existing ones. This case analysis describes the evolution of packaged software, Meta4 PeopleNet, towards the addiction of Rich Internet Applications features to a Human and Intellectual Capital Management tool. The findings and lessons learned presented in this case study provide useful insights for packaged software vendors facing software product evolution. 相似文献
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A detailed survey of 498 high technology small and medium-sized enterprises in the Netherlands shows process innovation by user firms to be common practice. Fifty-four percent of these firms reported developing entirely novel process equipment or software for their own use and/or modifying these, both at significant private expense. Twenty-five percent of the user innovations in our sample were transferred to commercializing producer firms. Many transfers were made without any direct compensation. Very importantly from the perspective of effective diffusion of user innovations, innovations with higher commercial potential - and more general appeal for users - are much more likely to be transferred to producers. The pattern we document of frequent innovation by individual user firms at substantial cost, followed in many cases by voluntary, no-charge information spillovers to producers, suggests that “open source economics” may be a general pattern in the economy. 相似文献
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[目的/意义]对移动互联网环境下陌生人社交软件的用户群体开展持续使用行为影响因素的分析研究,有助于了解这类用户群体的信息需求和情感需求,进一步丰富社交平台用户行为领域研究的相关理论,对陌生人社交平台未来的发展提供一定的参考。[方法/过程]采用扎根理论方法,对“Soul”社交APP用户展开调研,利用半结构化访谈采集用户相关数据并对其进行开放式编码、主轴编码和选择性编码,在确定范畴关系的基础上对用户的持续使用行为进行实证分析,并对影响因素进行探究。[结果/结论]陌生人社交软件用户的使用行为受到用户情感、用户感知、平台因素、社交因素、情境因素、用户持续使用意愿六方面的影响,并由此在产品运营角度对陌生人社交平台未来发展提出若干建议。 相似文献
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《Information processing & management》2001,37(2):295-311
A growing body of research is beginning to explore the information-seeking behavior of Web users. The vast majority of these studies have concentrated on the area of textual information retrieval (IR). Little research has examined how people search for non-textual information on the Internet, and few large-scale studies has investigated visual information-seeking behavior with general-purpose Web search engines. This study examined visual information needs as expressed in users’ Web image queries. The data set examined consisted of 1,025,908 sequential queries from 211,058 users of Excite, a major Internet search service. Twenty-eight terms were used to identify queries for both still and moving images, resulting in a subset of 33,149 image queries by 9855 users. We provide data on: (1) image queries – the number of queries and the number of search terms per user, (2) image search sessions – the number of queries per user, modifications made to subsequent queries in a session, and (3) image terms – their rank/frequency distribution and the most highly used search terms. On average, there were 3.36 image queries per user containing an average of 3.74 terms per query. Image queries contained a large number of unique terms. The most frequently occurring image related terms appeared less than 10% of the time, with most terms occurring only once. We contrast this to earlier work by P.G.B. Enser, Journal of Documentation 51 (2) (1995) 126–170, who examined written queries for pictorial information in a non-digital environment. Implications for the development of models for visual information retrieval, and for the design of Web search engines are discussed. 相似文献