Towards power consumption-delay tradeoff by workload allocation in cloud-fog computing

Fog computing, characterized by extending cloud computing to the edge of the network, has recently received considerable attention. The fog is not a substitute but a powerful complement to the cloud. It is worthy of studying the interplay and cooperation between the edge (fog) and the core (cloud). To address this issue, we study the tradeoff between power consumption and delay in a cloud-fog computing system. Specifically, we first mathematically formulate the workload allocation problem. After that, we develop an approximate solution to decompose the primal problem into three subproblems of corresponding subsystems, which can be independently solved. Finally, based on extensive simulations and numerical results, we show that by sacrificing modest computation resources to save communication bandwidth and reduce transmission latency, fog computing can significantly improve the performance of cloud computing.

A novel time computation model based on algorithm complexity for data intensive scientific workflow design and scheduling

Scientific workflow offers a framework for cooperation between remote and shared resources on a grid computing environment (GCE) for scientific discovery. One major function of scientific workflow is to schedule a collection of computational subtasks in well-defined orders for efficient outputs by estimating task duration at runtime. In this paper, we propose a novel time computation model based on algorithm complexity (termed as TCMAC model) for high-level data intensive scientific workflow design. The proposed model schedules the subtasks based on their durations and the complexities of participant algorithms. Characterized by utilization of task duration computation function for time efficiency, the TCMAC model has three features for a full-aspect scientific workflow including both dataflow and control-flow: (1) provides flexible and reusable task duration functions in GCE;(2) facilitates better parallelism in iteration structures for providing more precise task durations;and (3) accommodates dynamic task durations for rescheduling in selective structures of control flow. We will also present theories and examples in scientific workflows to show the efficiency of the TCMAC model, especially for control-flow. Copyright©2009 John Wiley & Sons, Ltd.

Book review: Stanley Melbourne Bruce: Australian Internationalist

Stanley Melbourne Bruce was at the centre of Imperial politics for more than two decades from the early 1920s until the end of the Second World War. This new biography presents Bruce as a consistent internationalist. Educated in Melbourne and Cambridge, Bruce, as a businessman, was alive to the importance of international commerce, and particularly Anglo-Australian trade. This lay at the core of his internationalism, which took the form in the 1920s of encouraging the political and economic integration of the British Empire. Bruce's punitive treatment of militant Australian trade unionists and his upholding of constitutionalism and law and order in the 1920s was part of an effort to defend one form of internationalism, commitment to the British Empire, against the competing international ideology of communism. While continuing to support a unified British Empire acting as a progressive force in world affairs, Bruce championed stronger international collaboration through the League of Nations and the United Nations and through cooperation between the Empire and the United States.

Visions, illusions and facts : a reflection on the partnerships between academic libraries and vendors in the new information landscape

Is the industry in chaos? How do we to meet the future information needs of the international scholarly community?

The one certainty is that forecasting is never easy. Libraries, vendors and publishers are all working in a rapidly changing environment. It is a fair prediction that there will be fewer participants and less competition in the marketplace. The potential for libraries to be locked into one vendor for access to electronic journals is real. Whether this access will be in perpetuity, no one can give an absolute guarantee. Intellectual property rights, commercial viability and communication standards are all of concern.

We've seen the vision, what's happening now? The Australian academic and research library market has an international reputation for being informed, frank and through necessity, pragmatic. When planning information access and delivery for the next two to five years we are told libraries need a reasonable indication of what is real. Vendors, more than ever, are contributing to a shared understanding amongst libraries, publishers and vendors of the priorities and concerns of different sectors of the industry.

Information sharing between heterogeneous uncertain reasoning models in a multi-agent environment : a case study

The issue of information sharing and exchanging is one of the most important issues in the areas of artificial intelligence and knowledge-based systems (KBSs), or even in the broader areas of computer and information technology. This paper deals with a special case of this issue by carrying out a case study of information sharing between two well-known heterogeneous uncertain reasoning models: the certainty factor model and the subjective Bayesian method. More precisely, this paper discovers a family of exactly isomorphic transformations between these two uncertain reasoning models. More interestingly, among isomorphic transformation functions in this family, different ones can handle different degrees to which a domain expert is positive or negative when performing such a transformation task. The direct motivation of the investigation lies in a realistic consideration. In the past, expert systems exploited mainly these two models to deal with uncertainties. In other words, a lot of stand-alone expert systems which use the two uncertain reasoning models are available. If there is a reasonable transformation mechanism between these two uncertain reasoning models, we can use the Internet to couple these pre-existing expert systems together so that the integrated systems are able to exchange and share useful information with each other, thereby improving their performance through cooperation. Also, the issue of transformation between heterogeneous uncertain reasoning models is significant in the research area of multi-agent systems because different agents in a multi-agent system could employ different expert systems with heterogeneous uncertain reasonings for their action selections and the information sharing and exchanging is unavoidable between different agents. In addition, we make clear the relationship between the certainty factor model and probability theory.

Bridging the gap between anecdotal and empirical evidence in the international education market : insights from the US and UK

Education is an industry which has seen rapid growth in its trade over a short period of time. From the import and export of textbooks to international examinations such as the British Advanced and Ordinary levels and the American GMAT, GRE, LSAT, TOEFL and others, international trade in education has truly become a multidimensional phenomenon (Liston and Reeves, 1985). While all these aspects have largely contributed to the development of the so called “academic trade” (McMahon, 1988), it is the cross-border migration of international students which however remains the most visible aspect of this trade (Bourke, 2000). Indeed, recent estimates by the Organisation for Economic Cooperation and Development (OECD) suggest that nearly 1.9 million students were abroad in 2002 (OECD, 2004). There are probably thousands more foreign students involved in lower level education, language training and the like, but at the time of writing, no comprehensive statistics is yet available on international students enrolled in non-tertiary level institutions (Knight, 2002). As a result, it is vital to stress at the outset that this paper focuses exclusively on cross-border tertiary education but parallels can be drawn for lower level education.

Public libraries in Ballarat : 1851-1900

This thesis analyses the development of the Ballarat East Free Library (1859), the Ballarat Mechanics’ Institute Library (1859) and the City of Ballaarat Free Library (1878) within the broader context of public librarianship in Victoria between 1851-1900. Mechanics’ Institute libraries and free libraries represent the major derivatives of a nineteenth-century library model that emphasised the pursuit of lifelong learning, private reading and the enjoyment of genteel recreational facilities. The circumstances that led to the formation of an Institute and a free library in Ballarat in, 1,859 provide a unique opportunity to analyse the public library model for two reasons. These libraries were established in a remarkable goldfield city that enjoyed a number of economic and cultural advantages and secondly, the Ballarat Mechanics’ Institute Library and the Ballarat East Free Library experienced such spectacular growth that by 1880 they were two of the largest public libraries in Australia. However, it is argued that this growth cycle could not be sustained due to a combination of factors including low membership levels, limited funding for recurrent expenditure purposes, and heightened dissatisfaction with the book collections. Libraries began to stagnate in the late-1880s and the magnitude of this collapse in Ballarat, and throughout the colony, was subsequently confirmed with the publication of a national survey of Australian libraries in 1935. The ‘Munn-Pitt’ report found that public libraries had provided a better service in 1880 than at any other time in the next six decades. Four conclusions are drawn in this comparative analysis of the Ballarat Mechanics’ Institute Library, the Ballarat East Free Library, and to a lesser extent, the City of Ballaarat Free Library, between 1851-1900. Firstly, is it shown that the literature places considerable emphasis on the formation of public libraries but is far less critical of the long-term viability of the public library model as it evolved in Ballarat and throughout the colony in the nineteenth century. Secondly, whilst Ballarat and its library committees benefited from the city's prosperity and the entrepreneurial zeal of its pioneers, these same library committees were unable to overcome the structural flaws in the public library model or to dispel the widespread belief that libraries were elitist organisations. As a consequence, membership of the major libraries in Ballarat never exceeded 4% of the total population. Thirdly, it is acknowledged that an absence of records relating to book borrowing habits by individuals limits is a limiting factor, but this problem has been addressed, in part, by undertaking a comparative analysis of collection development policies, invoices, lists of popular authors and books, public comment and the book borrowing patterns of a number of comparable libraries in central Victoria. These resources provide a number of insights into the reading habits of library patrons in Ballarat in the late-nineteenth century. Finally, this thesis focuses on the management policies and practices of each library committee in Ballarat in order to move beyond the traditional explanation for the demise of nineteenth-century libraries and to propose an alternative explanation for the stagnation of public libraries in Ballarat in the mid-1880s. The traditional explanation for the demise of colonial libraries was the sudden reduction in government funding in the 1890s, whereas this thesis argues that a combination of factors, including the unresolved tensions with regard to libraries collection development policies, committee and municipal rivalry, and increasing conservatism, had already damaged the credibility of Ballarat’s libraries by the mid-1880s. It is argued that the intense rivalry between library committees resulted in an unnecessary duplication of services and an inadequate membership base. It is also argued that the increasingly conservative, un-cooperative and uninviting attitudes of these library committees discouraged patronage and as a direct consequence, membership and daily visitor rates of the free and Institute libraries in Ballarat plummeted by 80% between 1880-1900.

Balancing act : competition and cooperation in US Asia-Pacific regionalism

While the United States is an important Asia-Pacific actor, its engagement with the region is complex and often difficult. Not only must US regionalism balance the diverse requirements of an ambitious policy agenda, but also US policy norms and priorities often clash with those of other regional actors. This has important implications for the capacity of the United States to provide regional leadership. Recent years have seen growing policy convergence between the United States and other Asia-Pacific actors, particularly in economic terms, but US regionalism continues to feature competition alongside collaboration.

Working at the nexus between public health policy, practice and research : dynamics of knowledge sharing in the Netherlands

Background
Joining the domains of practice, research and policy is an important aspect of boosting the quality performance required to tackle complex public health problems. “Joining domains” implies a departure from the linear and technocratic knowledge-translation approach. Integrating the practice, research and policy triangle means knowing its elements, appreciating the barriers, identifying possible cooperation strategies and studying strategy effectiveness under specified conditions.
This article examines the dynamic process of developing an Academic Collaborative Centre for Public Health in the Netherlands, with the objective of achieving that the three domains of policy, practice and research become working partners on an equal footing.
Method
An interpretative hermeneutic approach was used to interpret the phenomenon of collaboration at the nexus between the three domains. The project was explicitly grounded in current organizational culture and routines, applied to nexus action. In the process of examination, we used both quantitative (e.g. records) and qualitative data (e.g., interviews and observations). The data were interpreted using the Actor-Network, Institutional Re-Design and Blurring the Boundaries theories.
Results
Results show commitment at strategic level. At the tactical level, however, managers were inclined to prioritize daily routine, while the policy domain remained absent. At the operational level, practitioners learned to do PhD research in real-life practice and researchers became acquainted with problems of practice and policy, resulting in new research initiatives.
Conclusion
We conclude that working at the nexus is an ongoing process of formation and reformation. Strategies based on Institutional Re-Design theories in particular might help to more actively stimulate managers’ involvement to establish mutually supportive networks.

Down under and in between : Australian security perspectives in the 'Asian Century'

This chapter will provide an overview of Australian perspectives on the US alliance in light of ongoing and emerging challenges in the Asia-Pacific region. After a brief discussion of the motivations behind the signing of the ANZUS treaty, the first part of the chapter examines the historical context of the alliance, with a particular focus on the longstanding and ongoing tussle in Australia between independence in foreign policy making vis-à-vis broader structural constraints. While this debate has been a constant feature of the political scene in Australia, it has come into particular focus since the US withdrawal from Vietnam, which marked a turning point in Australian perspectives with regard to its own role in Asia. The collision of ideas surrounding Australian identity and Australian national interest has been reflected in policy approaches as successive governments have sought to strike a balance between the two exigencies and thus, most optimally ensure Australia’s strategic future. The chapter concludes by examining current perspectives through the lens of an ongoing debate taking place in Australian academic circles about what the rise of China means for Australia and its commitment to the US alliance, and considers options for caucus-style cooperation with fellow US allies beyond the hub-and-spokes model.

Iran and the Shanghai cooperation organization : ideology and realpolitik in Iranian foreign policy

The Islamic Republic of Iran has pursued full membership in the Shanghai Cooperation Organisation (SCO). In doing so, Iran has appeared to be unfazed by the prospect of allying with Russia and China, two countries which have systematically suppressed their Muslim minorities for decades. Similarly, the SCO's Central Asian member states are led by individual leaders who are generally believed to rule in spite of their populations. As a result, Iran's eagerness to join the SCO may appear to contradict its self-promoted image as the champion of Muslim interests, but in reality it sits nicely within its overarching enmity for the USA. Indeed, the SCO is seen as a geopolitical counterweight to the USA. For Iran, this geopolitical opportunity overrides ideological imperatives, with the gap between ideology and geopolitics most evident under the presidency of Mahmoud Ahmadinejad.

Australia-Malaysia security cooperation as a pivotal component for more stable bilateral relations

In the 1980s and 1990s, Australian-Malaysian relations reached a critical juncture due to a series of crises, such as the 1986 capital punishment of convicted drug smugglers Barlow and Chambers, and the 1993 "recalcitrant" jibe by Australian Prime Minister Paul Keating. Following the election of the Howard government in 1996, relations continued to be on a roller coaster with the Malaysian Prime Minister Mahathir Mohamad leading anti-Australia protests over the "Howard Doctrine," the Australian leadership of the 1999 intervention in East Timor, and the "Deputy Sheriff" controversy. Despite this, defense relations between the two remained strong. The success of this cooperation rests on shared political commitment to the security of the region. This article examines the impact that positive cooperation in "high politics" has had in mitigating the negative aspects of crises in "low politics." It argues that close bilateral defense relations have worked to prevent the emergence of further critical junctures in 2012 following the collapse of the Australian-Malaysian refugee swap deal and statements by Australian politicians about Malaysia's poor treatment of asylum seekers, and in 2013 over the overt support by many Australian politicians of the opposition, especially Anwar Ibrahim, during the Malaysian general elections.