嵌入式数据库发展现状与未来趋势研究

随着便携式计算设备和无线通信技术的发展,嵌入式数据库技术已经成为一个十分活跃的研究领域,并引起了越来越广泛的关注。文章阐述了嵌入式数据库的概念、背景及其特点,描述了嵌入式系统的研究目标和系统模型,并探讨了嵌入式数据库的几种关键技术。     

嵌入式数据库管理系统的研究

嵌入式数据库系统是支持移动计算或某种特定计算模式的数据库管理系统,数据库系统与操作系统、具体应用集成在一起,运行在各种智能型嵌入设备上。对嵌入式数据库管理系统的特点及数据库的要求进行探讨。     

基于嵌入式系统的移动数据库分析研究

在嵌入式系统的实践开发过程当中,有许多种情况需要对各种类型的信息数据进行相应的的支持处理,当前一般使用的方法主要分为两种,其一是经过网络和网络服务器之间进行连接从而取得需要的数据,其二为使用移动数据库在嵌入式系统中实现数据库的相关操作,嵌入式移动数据库能够很好的解决了移动存储的实际问题。在实际的嵌入式系统进行移动数据实践开发时应当考虑到需要解决的关键技术、嵌入式系统的体系结构与移动数据库的应用等方面,以便在实际开发过程当中能够发挥出嵌入式移动数据库的最大化性能。     

数据库中嵌入式数据应用安全监控系统

本文研究了一种基于嵌入式网络数据库的数据应用安全监控系统,该系统以增强网络数据库的数据应用安全为目的。根据嵌入式开发板的相关硬件特点,采用了多线程、内存队列等技术,实现了SQL语句解析、第三方中断数据库连接、条件审计、远程终端监管、非完全连接监听等功能。本系统在大规模负载条件下运行稳定,具备对企业级数据库访问的监管能力,在政府、军队、企业等领域拥有广阔的发展前景。     

基于普适计算的P2P电子商务模型研究

普适计算和P2P技术都是当前分布式计算技术的热门研究方向。文中介绍了普适计算和P2P技术的特点,继而利用Groove软件和RFID射频技术建立了一个新的电子商务模型,并对此模型的运作从企业内部应用和B2B模型的应用两个方向进行了介绍。     

基于普适计算的P2P电子商务模型研究

普适计算和P2P技术都是当前分布式计算技术的热门研究方向。文中介绍了普适计算和P2P技术的特点,继而利用Groove软件和RFID射频技术建立了一个新的电子商务模型,并对此模型的运作从企业内部应用和B2B模式的应用两个方向进行了介绍。     

基于网格索引的嵌入式空间数据库设计

随着空间信息技术飞速发展,诸如汽车导航、区域地质调查等越来越多的空间信息应用基于嵌入式移动设备。本文从移动设备的特点入手,分析了嵌入式设备在空间信息领域应用现状,提出新的空间信息数据库设计思路,有效解决嵌入式设备上效率低下的瓶颈问题,并根据此思路,设计实现嵌入式移动GIS平台。     

嵌入式实时数据库存取机制研究

针对传统数据库存取实时性较差的现状,本论文对在嵌入式数据库中实时存取机制展开了分析探讨,在讨论了当前实时数据库在交互系统中数据存取管理方面存在的问题的基础上,重点探讨了嵌入式数据库实时存取数据的机制,从数据分域索引和实时存储结构设计两个角度实现了嵌入式数据库系统的数据实时存取,对于进一步提高数据库系统数据管理的实时性具有一定借鉴意义.     

Web数据库技术在电子商务中的应用

伴随着Internet的迅猛发展,数据库的应用环境也随之发生了巨大的变化,新的数据库技术应用于不同的领域之中,其在Internet中的应用范围也越来越广泛。由此数据库技术进入了以支持Internet/Web应用为特征的新时代。本文通过手机网站的后台数据库的搭建,从实际应用的角度概括地介绍了Web数据库技术在电子商务中的应用。     

浅析移动数据库的关键技术及具体应用

移动数据库作为分布式数据库的延伸和扩展，拥有分布式数据库的诸多优点和独特的特性，能够满足未来人们访问信息的要求，具有广泛的应用前景。移动数据库的概念移动数据库是能够指出移动式计算环境的数据库，其数据在物理上分散而逻辑上集中。它涉及到数据库技术，分布式计算技术，移动通信技术等多个学科，与传统的数据库相比，移动数据库具有移动性，位置相关性，频繁的断接性，网络通讯的非对称性等特征。本文分析移动数据库的数据管理方式及其结构特点，并探讨了移动数据库的应用的具体应用。     

Pioneering strategies in the digital world. Insights from the Axel Springer case

Digital technologies present some distinctive characteristics; they simultaneously enable pervasive connectivity, immediacy of interactions and wide access to data and computing power. Based on a detailed historical analysis of Axel Springer, we suggest that pioneering strategies in new markets created by the diffusion of digital technologies are negatively moderated by the fit between firms’ legacy core capabilities and those required to enter the new market. We then show that pioneering strategies in non-core legacy markets are instrumental in creating the capabilities necessary for the sustainability of first-mover advantages (FMA) in the legacy core markets. Finally, we show the role of managerial cognition as a key individual-level enabler in achieving pioneering advantages.     

Developing an Effective Mobile Rescue Support System

Abstract

Mobile computing technology is now rapidly developing in the area of health care service requiring the use of mobile access to information at remote locations. Mobile information transmission systems distribute data to and from remote basis with information sent back and forth using client/server architecture through any wireless communication media. As such, decision-making for any application domain could then be based on complete knowledge as events occur. This immediate decision-making at a critical time is of particular importance in the case of accidents and/or disaster. However, many application obstacles within wireless computing are yet to be resolved. One major issue is the speed of data retrieval, which directly affects the performance of mobile database applications and can affect the emergency rescue process. In this paper, we investigate a semantic-based transaction management mechanism for mobile emergency rescue support system. We then develop a prototype system by using the mechanism and evaluate the performance of the system.     

Weight Discrimination in the American Workplace: Ethical Issues and Analysis

Research providing consistent evidence of pervasive discrimination against overweight job applicants and employees in the American workplace raises important questions for organizational stakeholders. To what extent is the disparate treatment of job applicants or employees based on their weight ethically justified? Are there aspects of weight discrimination that make it more acceptable than discrimination based on other characteristics, such as race or gender? What operational steps can employers take to address concerns regarding the ethical treatment of overweight individuals in the workplace? This article investigates these and related questions. Its purpose is to provide information and analysis that will assist organizations in formulating ethical responses to a widespread phenomenon: weight discrimination in the workplace. Although its focus is the American workplace, the proposed employer ethical obligations and the practical guidance that is provided are viewed as generalizing across countries and cultures.     

Constructing Business-to-Business Marketing Models that Overcome the Limitations in Variable-Based and Case-Based Research Paradigms

ABSTRACT

Purpose: This article describes the principal limitations frequently observable in variable-based and case-based research in business-to-business (B-to-B) marketing.

Focus: The limitations relate to B-to-B theory construction, data collection, and data analysis and interpretation. The principal limitations in variable-based research include the reliance on regression (net effects) models in theory construction and the pervasive failure to test resulting empirical regression models for predictive validity. The principal limitations of case-based research are the frequent absence of rigorous theory formulation either pre- or postdata collection and failures to test propositions for predictive validity.

Recommendations: The article directs attention to iconic studies that break free in part from these and additional limitations. The article offers useful steps on how to break free completely from the principal limitations.

Managerial implications: B-to-B executives should insist that researchers include asymmetric algorithm models in reports that include symmetric (regression analysis) and analysis of variance findings.     

The impact of the information and communications technology revolution on the internationalisation of corporate technology

The rising pace of technological change in information and communications technology (ICT) has doubtless provoked the rise of “techno-globalism” at a cross-firm level by providing a new mode of diversification. As a result of the increasing process of technological interrelatedness, the specialisation in a core pervasive technology (as ICT is nowadays) allows the firm to develop tacit capabilities, which, in turn, facilitate its corporate activity in different kinds of technology across national boundaries in an intra-firm network. Therefore ICT can be view as a platform for entry into new products as well as an enabler of fusion of technology.This paper investigates whether the increased specialisation in ICT has influenced the geographical diversification or internationalisation of firms. The association between the two phenomena is found in the later (but not in the former) period under analysis. By adopting a more detailed level of sectoral aggregation within the ICT field, the econometric analysis seems to indicate computing (rather than communications) as the ICT component driving the relationship between internationalisation of research and development activity and ICT specialisation.     

中国移动云计算发展探究

随着云计算概念被Google、Amazofl、IBM等公司高调推出，各主要的IT巨头纷纷提出了自己的云计算计划。现在，云计算的火爆也在向电信领域蔓延。国际上，全球电信运营商正在积极寻找云计算带给电信业的机会，部分运营商甚至已经宣布为客户提供基于云计算的服务。在中国，云计算也被电信运营商提上桌面。本文主要针对云计算这一概念，论述云计算对电信运营商的重要性，中国移动向云计算转型的必要性以及中国移动目前的云计算发展现状。     

Cloud computing capability: its technological root and business impact

Cloud computing can help organizations create business value for long-term viability and sustainability by providing flexibility and versatility. We report a systematic analysis of the central role of cloud computing capability in bridging the information technology (IT) features of cloud computing and its business value. We posit that the IT features of cloud computing lead to measureable increase in business value on both dimensions of performance benefit and collaboration benefit through cloud computing capability. Survey data collected from 174 firms largely support our hypotheses. This study offers fine-grained insights into the mechanisms of how the IT features of cloud computing influence the business value stemming from cloud computing. Firms should focus more on cultivating organizational capabilities to effectively deploy cloud computing in order to harvest the benefits promised by cloud computing.     

Consumer Acceptance of Cloud Computing

To date, little research has focused on the consumer's perspective of cloud computing acceptance. Thus, this article explores the drivers of voluntary consumer acceptance of cloud computing in a sample of Moroccan students. Results indicate that in addition to ease of use and perceived usefulness, structural trust is important for voluntary cloud computing acceptance. However, unlike prior studies, results indicate that perceived ease of use has a stronger effect on intention to use cloud computing, than perceived usefulness. The results of this study contribute to theory and provide strategies for cloud computing service providers to attract and retain individual consumers.     

信号级协同计算平台架构及应用思考

针对智能化作战对军事电子信息系统计算能力提升的迫切需求，结合云计算的资源虚拟化、大数据的分布式计算等技术，提出了基于嵌入式CPU+ALL（DSP、FPGA、PPC、GPU、AI处理器等）的异构处理的信号级协同计算平台架构，包括弹性、轻量级异构资源虚拟化模型、分布式实时计算框架和智能计算框架等，形成了一套架构统一、资源共用、使用简便的协同计算和智能计算环境。通过战术级无线电认知和智能信号与信息处理两个典型应用场景，探讨了该信号级协同计算平台可能带来的颠覆性效用。