基于椭圆曲线的快速嵌入式工程文件加密算法研究

针对智能电表嵌入式工程文件的保密性问题,提出了一种基于椭圆曲线的快速智能电表嵌入式工程文件加密和解密方法。首先对智能电表嵌入式工程文件的预处理,通过转化嵌入式工程文件为数字符号,再利用椭圆曲线加密预处理的基础上对智能电表软件工程文件进行加密和解密的操作。论文通过减小密钥的数据长度以及重定义工程文件中的高频词汇的加密值,降低了加密的时间消耗和资源消耗,减小了加密计算量,提高了加密速度。     

基于混沌理论和Arnold变换的X射线数字图像加密算法

图像经单一的混沌算法加密后,还留有原图像轮廓,存在加密强度不足的问题。文章提出应用二维Arnold矩阵变换和混沌理论混合加密X射线图像的算法,利用Arnold扰乱图像位置的特点,结合混沌加密理论,有效地解决了单一混沌加密算法对图像加密强度不够的问题。最后,通过实验验证了该算法的有效性。实验结果表明,该算法的加密安全性很高。     

Hill密码的加密解密矩阵的求法

本文介绍了Hill密码算法思想,Hill密码加密解密过程,加密解密过程中模代数知识,结合实例,应用数学知识和Matlab语言,说明如何求Hill密码的加密矩阵以及解密矩阵,从而实现了Hill密码快速加密和解密。     

用C#语言实现DES加密和解密算法

信息时代数据安全越来越受到关注。对数据进行加密已成为保障数据安全的首要方法。文章对DES数据加密标准算法进行分析,并用C#语言实现DES数据加密。     

加密货币的会计核算问题分析

虽然加密货币已逐渐得到飞速发展,但当前包括国际会计准则理事会(IASB)在内的各大准则制定机构对加密货币的会计核算原则仍然众说纷纭。通过梳理当前澳大利亚、日本、白俄罗斯、韩国已出台的加密货币会计核算指导意见,以及《国际会计准则》的相关规定和大型会计师事务所的意见,对当前加密货币会计核算进行理论探索。进一步地,从案例研究的角度出发,以A公司对加密货币的会计处理为例,在分析其对财务报表影响的基础上,评价其加密货币会计处理方式的允当性。最后,综合案例研究结果和各国经验与政策,为会计主体所持有加密货币的会计核算提出建议。     

通用网页源文件加密软件的设计与实现

随着网络的普及，网络信息的安全性变得越来越重要。文章首先讨论加密的体制，接着给出通用网页源文件加密软件的设计思想，然后利用HTML设计一个加密工具。     

简单有效的文件保密方法

有不少媒体介绍过加密、伪装电子文档的方法,以防止文件被复制、盗取,但大多步骤繁琐,操作不便,影响工作效率。在此笔者推荐一种方便实用且容易掌握的操作方法。1文件保密三步曲第一步,将重要文件用加密程序加密。可以下载lockdir这个文件夹加密工具,下载地址     

浅谈密码技术

密码技术在当今社会是一个科学研究的领域。人们对它的研究多种多样,涉及范围也非常广泛。本文简要介绍了公钥加密、私钥加密等现代密码技术,并在此基础上详细地叙述了现代密码技术的新进展,旨在取代数据加密标准(DES)的先进加密标准AES。     

多步数据加密技术及应用

数据加密是保护数据安全的一种有效的方法,它是将一段明文按某种算法进行处理,使其成为密文,以保护数据不被非法人窃取、阅读。数据加密技术常分为"对称式"加密与"非对称式"加密两类。多步加密算法属对称式加密,由于安全性高得到广泛应用。     

数字加密货币征税探究

数字加密货币作为前沿技术的崭新应用,拥有巨大的经济、社会价值.与传统虚拟商品不同,数字加密货币在性质上属于金融资产,具有可税性,美、英、澳等国纷纷将数字加密货币纳入征税范围,对我国利用税收管控数字加密货币交易具有极大的借鉴意义.基于此,文章认为我国应当围绕数字加密货币建立法定征税体系,并在所得环节征收企业所得税和个人所得税,在流转环节征收增值税和消费税.     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Early History of the Cumulants and the Gram-Charlier Series

The early history of the Gram-Charlier series is discussed from three points of view: (1) a generalization of Laplace's central limit theorem, (2) a least squares approximation to a continuous function by means of Chebyshev-Hermite polynomials, (3) a generalization of Gauss's normal distribution to a system of skew distributions. Thiele defined the cumulants in terms of the moments, first by a recursion formula and later by an expansion of the logarithm of the moment generating function. He devised a differential operator which adjusts any cumulant to a desired value. His little known 1899 paper in Danish on the properties of the cumulants is translated into English in the Appendix.     

Capturing the Implications of Services Trade Liberalization

This paper evaluates the impact of service sector trade liberalization on the world economy by a ten-region, eleven-sector CGE model with import embodied technology transfer from developed countries to developing countries. Simulation results show that service sector trade liberalization not only directly affects world service production and trade, but also has significant implications for other sectors in the economy. The major channel of the impact is through inter-industry input-output relations and TFP growth induced from services imported by developing countries from developed countries, which may be embodied with new information and advanced technology.