基于SARMA模型的我国粗钢产量时间序列分析与预测

本文分析了我国粗钢产量的时间序列(2000年1月到2012年9月),在采用一阶自然对数差分和一阶季节差分来处理时间序列的波动性趋势和季节性的基础上建立季节性自回归移动平均模型(SARMA模型)。结果表明该模型拟合效果较好,预测得到的数据与实际数据误差较小,所以该模型具有一定的参考价值。     

湖北省农村居民人均纯收入的时间序列模型

本文利用湖北省1980-2008年农村居民人均纯收入时间序列数据,建立了ARMA(自回归移动平均)模型进行时间序列分析.分析结果表明,ARMA(1,1)模型能够提供较好的预测结果,因而可以用其进行预测,为相关部门提供参考数据.     

结构时间序列模型在经济预测方面的应用研究

本文开发了一种新的经济时间序列预测方法——利用结构时间序列模型进行预测。在结构时间序列模型中由经济指标分解得到的趋势、循环、季节及不规则因素是不可观测的变量，不能利用传统的回归分析方法求解模型，因此，本文采用状态空间方法来求解结构时间序列模型。本文通过ARIMA模型来研究经济时间序列的结构，在此基础上建立了不同形式的结构时间序列模型，并利用结构时间序列模型对我国社会消费品零售总额、狭义货币供给量(M1)和国内生产总值(GDP)等经济时间序列进行了预测。实证研究表明，结构时间序列模型具有良好的预测效果。从而为经济时间序列预测提供了一种新的有效方法。     

基于ARMA模型的我国一次性能源生产量分析

本文针对改革开放以来即1978年到2010年我国一次性能源生产量数据,首先运用单位根检验及差分方法来处理该一次性能源生产量时间序列的非平稳性,然后在此基础上进行模型识别、定阶、参数估计和适应性检验,最终选择出ARMA(1,3)模型。最后,根据该模型对最近五年的一次性能源生产量进行预测并与实际值进行对比分析。     

基于ARMA模型的上海市人均GDP时间序列分析与预测

本文分析了上海市人均GDP水平时间序列(1978年至2008年),在将数据平稳化的基础上建立自回归移动平均模型(ARMA模型),从中找出上海市人均GDP序列变化的规律,并在此基础上对未来几年的指标数值进行了预测。     

对经济增长的时间序列分析

时间序列分析在经济运用中作用十分明显。利用1980～2003年国内生产总值的相关资料,运用时间序列分析,应用SAS软件对经济增长时间序列进行模型识别、拟合、估计和预测,预测结果较为满意。而改革开放以来,投资在经济增长中的作用越来越明显,在对经济增长序列进行时间序列分析的同时,也结合回归分析建立经济增长和投资的回归-时间序列组合模型来进行分析。     

基于灰色预测模型的延安旅游客流研究

灰色预测模型是定量预测精度较高的一种模型。本文运用灰色预测模型的建模过程和模型精度检验,选取2011-2014年延安的旅游客流量作为原始数据,建立延安市旅游客流量的时间序列模型,经检验,该模型预测精度可靠。依据该模型,计算出2015-2018年的延安市旅游客流量。经预测,2015-2018年的延安市旅游客流量会继续呈增长态势,且发展态势较好,预计2017年全市接待国内外游客将突破5000万人次。根据对预测数据的分析,本文提出应从加强红色旅游体验项目、提升基础设施建设、加强智慧旅游城市建设和提升旅游服务等方面提升延安红色旅游的可持续发展。     

广西水电设计院第五栋宿舍楼的变形观测与预报

文章研究了利用时间序列分析方法ARMA(P,q)模型建立变形监测分析及预报的方法,并对时间序列分析方法的应用进行初步探讨.同时,在理论研究的基础上,对具体变形点进行时间序列分析,运用3种模型进行变形观测数据的解算预测.     

中国人均GDP时间序列模型建模研究

本文对中国人均GDP1949年至2004年时间序列进行研究,建立了用于预测的时间序列模型,结果为ARIMA(1,2,1)。     

基于先验神经网络的港口物流量对海洋经济增长预测——以浙江省为例

提出了一种基于先验知识神经网络预测模型,分别采用时间序列和多变量建模方法对反映浙江省海洋经济发展水平的各指标进行建模预测,与其他建模方法(如GM(1,1)时间序列模型)相比,有更好的综合性能。最后采用PKNN时间序列模型对2011-2020年浙江省沿海地区海洋经济发展水平进行预测,结果表明预测得到的2015年浙江海洋经济产值接近浙江省规划值。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

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.     

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 Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.