397 results on '"Stephen Chen"'
Search Results
252. Contents of Current Periodicals.
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FINANCE periodicals ,ACCOUNTING periodicals - Abstract
A list of contents of selected periodicals in finance and accounting in India, which include "Accounting and Business Research," "The American Economic Review" and "The American Journal of Economics and Sociology," is presented.
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- 2012
253. Solar Power in Space?
- Author
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Garretson, Peter
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SOLAR energy ,OUTER space ,RENEWABLE energy sources ,SPACE Age, 1957- ,SATELLITE solar power stations - Abstract
The article discusses the concept of space-based solar power (SBSP), highlighting an issue regarding the potential role of SBSP in the U.S. grand strategy for space. SBSP is a concept for upgrading energy system by placing large orbital power plants into orbit to collect the sun's raw energy and beam it down to where it is needed on the earth. It discusses the scope and feasibility for solar-power satellites.
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- 2012
254. Submerged and transmucosal healing yield the same clinical outcomes with two-piece implants in the anterior maxilla and mandible: interim 1-year results of a randomized, controlled clinical trial.
- Author
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Hämmerle, Christoph H. F., Jung, Ronald E., Sanz, Mariano, Chen, Stephen, Martin, William C., Jackowski, Jochen, Ivanoff, Carl‐Johan, Cordaro, Luca, Ganeles, Jeffrey, Weingart, Dieter, Wiltfang, Jörg, and Gahlert, Michael
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RANDOMIZED controlled trials ,DENTAL implants ,MANDIBLE surgery ,MAXILLA surgery ,QUESTIONNAIRES ,BONE grafting ,MEDICAL statistics ,CLINICAL trials - Abstract
Objectives: To test whether or not transmucosal healing at two-piece implants is as successful as submerged placement regarding crestal bone levels and patient satisfaction. Material and methods: Adults requiring implants in the anterior maxilla or mandible in regions 21-25, 11-15, 31-35 or 41-45 (WHO) were recruited for this randomized, controlled multi-center clinical trial of a 5-year duration. Randomization was performed at implantation allowing for either submerged or transmucosal healing. Final reconstructions were seated 6 months after implantation. Radiographic interproximal crestal bone levels and peri-implant soft tissue parameters were measured at implant placement (IP) (baseline), 6 and 12 months. Patient satisfaction was assessed by a questionnaire. A two-sided t-test (80% power, significance level α=0.05) was performed on bone-level changes at 6 and 12 months. Results: One hundred and twenty-seven subjects were included in the 12-month analysis (submerged [S]: 52.5%, transmucosal [TM]: 47.2%). From IP to 6 months, the change in the crestal bone level was −0.32 mm ( P<0.001) for the S group and −0.29 mm ( P<0.001) for the TM group. From IP to 12 months, bone-level changes were statistically significant in both groups (S −0.47 mm, P<0.001; TM −0.48 mm, P<0.001). The mean differences of change in the bone levels between the two groups were not statistically significant at either time point, indicating the equivalence of both procedures. For both groups, very good results were obtained for soft tissue parameters and for patient satisfaction. Conclusions: Transmucosal healing of two-piece implants is as successful as the submerged healing mode with respect to tissue integration and patient satisfaction within the first 12 months after IP. To cite this article: Hämmerle CHF, Jung RE, Sanz M, Chen S, Martin WC, Jackowski J, Ivanoff CJ, Cordaro L, Ganeles J, Weingart D, Wiltfang J, Gahlert M. Submerged and transmucosal healing yield the same clinical outcomes with two-piece implants in the anterior maxilla and mandible: interim 1-year results of a randomized, controlled clinical trial. Clin. Oral Impl. Res 23, 2012; 211-219. doi: 10.1111/j.1600-0501.2011.02210.x [ABSTRACT FROM AUTHOR]
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- 2012
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255. Creating sustainable international social ventures.
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Chen, Stephen
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SOCIAL entrepreneurship ,SOCIAL exchange ,BUSINESSPEOPLE ,SOCIAL interaction ,SUSTAINABILITY - Abstract
International social ventures are now an increasingly common feature of the international business and social landscape in many countries worldwide. However, despite the increase in the number of social ventures and widespread interest that has resulted, theoretical development that deals specifically with international social ventures, or social ventures that operate across borders, has lagged behind, and there is little to guide potential social entrepreneurs thinking of setting up an international social venture. The aim of this article is to show how combining concepts from social exchange theory with international new venture theory can provide a useful conceptual framework that helps answer the central questions: What are the conditions for sustainable international social ventures? What difficulties are likely to arise in establishing such ventures? © 2012 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]
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- 2012
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256. Journal of organizational behavior.
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- 2007
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257. Testing Regional Effects in the Internationalization-Performance Relationship in Asian Service Firms.
- Author
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Chen, Stephen
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GLOBALIZATION - Abstract
An abstract of the article "Testing Regional Effects in the Internationalization-Performance Relationship in Asian Service Firms," by Stephen Chen is presented.
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- 2007
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258. Acknowledgment to Reviewers.
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- 2011
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259. The geopolitics of climate change: power transitions, conflict and the future of military activities.
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Smith, Paul J.
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CLIMATE change ,GEOPOLITICS ,HUMANITARIAN assistance ,MILITARY assistance ,MILITARY missions - Abstract
Climate change is emerging as one of the primary geopolitical challenges of the early twenty-first century, one that will likely involve military engagements and deployments in both traditional and non-traditional missions. Unlike mass casualty terrorism, climate change does not have a single galvanising event that can encourage collective mitigation efforts by both developed and developing states. International efforts to counter putative climate change causes have, thus far, been only marginally successful. Consequently, some of the more pernicious effects of climate change-extreme weather, heat waves, droughts and floods-will likely continue to manifest in the years and decades ahead. From a geopolitical perspective, climate change may influence the trajectory of rising or declining states in an increasingly multipolar world. It may also induce or exacerbate resource competition between states, particularly with regard to energy resources, water and food. Climate change may also exert a general weakening effect on lesser developed countries, thus necessitating increasingly intrusive and costly humanitarian assistance and disaster response (HADR) missions, some of which may be conducted by military agencies. Overall, these trends suggest that climate change will continue to emerge as a significant factor that shapes and defines future military missions and deployments. [ABSTRACT FROM AUTHOR]
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- 2011
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260. Functional characterization of optimized acellular peripheral nerve graft in a rat sciatic nerve injury model.
- Author
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Nagao, Ryan J, Lundy, Scott, Khaing, Zin Z, and Schmidt, Christine E
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Objectives: Acellular grafts are a viable option for use in nerve reconstruction surgeries. Recently, our lab created a novel optimized decellularization procedure that removes immunological material while leaving the majority of the extracellular matrix structure intact. The optimized acellular (OA) graft has been shown to elicit an immune response equal to or less than that elicited by the isograft, the analog of the autograft in the rat model. We investigated the performance of the OA graft to provide functional recovery in a long-term study. Methods: We performed a long-term functional regeneration evaluation study using the sciatic functional index to quantify recovery of Lewis rats at regular time intervals for up to 52 weeks after graft implantation following 1 cm sciatic nerve resection. OA grafts were compared against other decellularized methods (Sondell treatment and thermal decellularization), as well as the isograft and primary neurorrhaphy. Results: The OA graft supported comparable functional recovery to the isograft and superior regeneration to thermal and Sondell decellularization methods. Furthermore, the OA graft promoted early recovery to a greater degree compared to acellular grafts obtained using either the thermal or the Sondell methods. Discussion: Equivalent functional recovery to the isograft suggests that the OA nerve graft may be a future clinical alternative to the current autologous tissue graft. [ABSTRACT FROM AUTHOR]
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- 2011
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261. Announcement.
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EDITORS ,UNIVERSITIES & colleges ,SCHOLARLY peer review - Abstract
The article presents a list of editors and editorial board members who peer review articles submitted to the journal and their educational institutions, including Jarle Aarstad at Bergen University College, Rikki Abzug of Ramapo College of New Jersey, and Robert Albin of Sapir College.
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- 2011
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262. Golden List of Reviewers for 2010.
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LISTS ,PUBLISHING - Abstract
Lists the reviewers who contributed to IEEE Transactions on Electron Devices for 2010. [ABSTRACT FROM AUTHOR]
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- 2010
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263. Announcement.
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LISTS ,SCHOLARLY peer review - Abstract
The names of people who served as referees in this journal's review process for submitted articles during the year 2009 are listed and include Ali J. Abbas of the University of Pennsylvania, Ida Berger of Ryerson University, and Walter Block of Loyola University.
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- 2010
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264. University teaching of implant dentistry: guidelines for education of dental undergraduate students and general dental practitioners. An Australian consensus document.
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Mattheos, N., Ivanovski, S., Heitz-Mayfield, L., Klineberg, I., Sambrook, P., and Scholz, S.
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DENTISTRY ,DENTAL care - Abstract
The article presents a discussion of implant dentistry during the Australian Consensus Workshop on Implant Dentistry University Education to be held at Gold Coast, Queensland on February 4-6, 2010.
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- 2010
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265. University postgraduate training in implant dentistry for the general dental practitioner.
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Ivanovski, S., Mattheos, N., Scholz, S., and Heitz-Mayfield, L.
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DENTISTRY ,CONTINUING education ,ADULT education ,CAREER development ,DENTAL care ,EDUCATION - Abstract
Aims of This Paper This paper aims to: (1) Describe the educational requirements of general practitioners who want to safely and effectively introduce implant dentistry procedures to their practice. (2) Define the necessary competencies and level of complexity that would need to be attained in a postgraduate implant dentistry programme for general dental practitioners. (3) Discuss the programme structures which universities can utilize in order to provide quality education in implant dentistry for general practitioners. (4) Provide guidelines for the resources, content, course format and instructional methods which could be well suited to the educational requirements of such programmes. The authors intend to produce a headline reference guide to outline the necessary educational structures for postgraduate pathways aimed at facilitating the continuous professional development of general practitioners within implant dentistry. This paper does not address issues concerning specialist training or higher research degrees. [ABSTRACT FROM AUTHOR]
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- 2010
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266. Ethical and unethical leadership: Double vision?
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Millar, Carla C. J. M., Delves, Roger, and Harris, Phil
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BUSINESS ethics ,LEADERSHIP ,EXECUTIVES - Abstract
The article discusses various reports published within the issue, including one by Clive Boddy on the concept of corporate psychopaths, another by Slawomir Magala on ethical leadership and cultural change in organizations, as well as a report by Ricky Szeto on the implications of folk wisdom for unethical practices by Chinese managers.
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- 2010
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267. Forging National Unity: Ideas of Race in China.
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DIKÖTTER, FRANK
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RACE ,CHINESE people ,NATIONALISM ,EUGENICS ,CULTURE ,CHINESE language ,IMPERIALISM ,FAMILIES ,REFORMS - Abstract
The article focuses on racial theories in the People's Republic of China wherein race was viewed as a concept capable for the promotion of nationalism after the collapsed of Qing Empire in 1911. The notion of race, which was often mixed to the politics of nationalism, adjusts continuously to various social and political contexts from the reformist movement in 1980s to the Chinese Communist Party's eugenic policies. It mentions that the race concept emerged as a powerful and cohesive form of identity due to the diversity of religion, family structures, and regional cultures of Chinese. Racial theories were distributed through school textbooks and travel literature. Moreover, the term Chinese was assumed as a language, culture, and a race even the members were scattered across the globe.
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- 2010
268. China's New Energy-Security Debate.
- Author
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Kennedy, AndrewB.
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POWER resource security measures ,ENERGY policy ,PETROLEUM export & import trade ,INTERNATIONAL markets ,POLITICAL economic analysis ,INTERNATIONAL relations theory ,INTERNATIONAL relations ,COMMERCIAL policy - Abstract
China's debate over what 'energy security' is and how it can be achieved has evolved considerably over the past decade. Traditionally, Chinese officials and analysts have been most worried about China's mounting oil imports, and they have expressed considerable wariness of international energy markets and institutions. This narrow and relatively nationalistic view of China's energy-security challenge has been challenged on several different fronts, however, particularly in the past five years. Prominent analysts now call for a more positive approach to international markets and institutions, and some argue that external dependence is a less important energy security challenge than the shortcomings of China's own energy system. China's broadening debate over energy security represents an opportunity for the outside world as it engages China on energy and climate change in the years ahead. [ABSTRACT FROM AUTHOR]
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- 2010
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269. About Global Leadership and Global Ethics, and a Possible Moral Compass: an Introduction to the Special Issue.
- Author
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Jones, Marc and Millar, Carla
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LEADERSHIP ,ETHICS ,BUSINESS ethics ,GLOBALIZATION ,SOCIAL responsibility of business ,INTERNATIONAL business enterprises - Abstract
This paper reviews a number of huge challenges to ethical leadership in the twenty-first century and concludes that the need for global ethical leadership is not merely a desirable option, but rather - and quite literally - a matter of survival. The crises of the recent past reveal huge, and in some cases criminal, failures of both ethics and leadership in finance, business and government. We posit that mainstream economic theory's construct of ' homo economicus' and its faith in the 'invisible hand' of the market constitute deeply flawed foundations upon which alone policy may be built and, farthermore, that these problematic foundations exert substantial shaping power over the institutional and discursive landscapes in which international business is transacted. Analogously, we argue that dominant approaches to business ethics and corporate social responsibility are, if not incorrect, at least in need of revisiting in terms of questioning their basic assumptions. Instead of the smugness of Western (especially Anglo-American) attitudes towards other ways of thinking, valuing and organising, it appears clear that openness, cooperation and co-creation between the developed and developing worlds is a basic prerequisite for dealing with the global challenges facing not just leaders, but humanity as a whole. This objective of stimulating discussion between dominant and marginal voices has guided our selection of papers for this Special Issue. We have thus included not only representatives of research from within the parameters of mainstream business ethics, IB or leadership scholarship, but also innovative contributions from fields such as military history, information technology, regulation, spirituality and sociology. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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270. The strength of family networks in transnational immigrant entrepreneurship.
- Author
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Mustafa, Michael and Chen, Stephen
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ENTREPRENEURSHIP ,BUSINESSPEOPLE ,IMMIGRANTS ,IMMIGRANT business enterprises ,FAMILY-owned business enterprises ,FAMILIES - Abstract
In this article we examine how five immigrant entrepreneurs in Malaysia and Singapore have internationalized their businesses and the role of transnational family networks in this process. We show that one of the key means by which these entrepreneurs are able to access resources and make use of contacts across borders is through transnational family and kinship networks that allow them to simultaneously engage in social and business activities in both countries. We discuss the characteristics of these family networks compared with other social networks that make them of particular value in internationalization. © 2010 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]
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- 2010
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271. Isolating adipose-derived mesenchymal stem cells from lipoaspirate blood and saline fraction.
- Author
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Francis, Michael P., Sachs, Patrick C., Elmore, Lynne W., and Holt, Shawn E.
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- 2010
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272. The ethics of counterfeiting in the fashion industry: quality, credence and profit issues.
- Abstract
The article discusses the study "The Ethics of Counterfeiting in the Fashion Industry: Quality, Credence and Profit Issues," by Brian Hilton, Choi Chong Ju and Stephen Chen, which appeared in the 2004 issue of the periodical "Journal of Business Ethics." The study analyzed the different types of counterfeiting that take place in the fashion industry. It also discussed the ethical issues raised by the incidents.
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- 2005
273. Corporate Responsibilities in Internet-Enabled Social Networks.
- Author
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Chen, Stephen
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SOCIAL responsibility of business ,ONLINE social networks ,INTERNET ,LEGAL liability ,RESPONSIBILITY ,CENTRALITY - Abstract
As demonstrated by the popularity of social networking sites such as Facebook and Twitter, Internet-based social networks have become an important part of daily life, and many businesses are now involved in such networks either as service providers or as participants. Furthermore, inter-organizational networks are becoming an increasingly common feature of many industries, not only on the Internet. However, despite the growing importance of networks for businesses, there is little theoretical study on the social responsibilities of businesses in such networks, and how these responsibilities are affected by different types of networks. This article explores how social network analysis, which has been developed from studies of social networks of individuals, can be used to shed light on corporate responsibilities in social networks. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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274. Introduction to the Special Issue on the Impact of Network Ethics on Business Practices.
- Author
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Vaccaro, Antonino, Santana, Adele, and Wood, Donna
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BUSINESS ethics ,INTERORGANIZATIONAL relations ,SOCIAL networks - Abstract
This special issue on network ethics offers 15 scholarly articles from a variety of disciplines and fields of study, all aimed at exploring some important aspect of how networks develop, enact, and enforce ethical norms. The articles are ordered according to the levels of analysis each deals with, ranging from the cognitive/intra- personal to the systemic/societal. Taken together, these articles provide a fresh look at how networks are changing the way business is done and the way we think about ethics. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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275. Human Rights, Transnational Corporations and Embedded Liberalism: What Chance Consensus?
- Author
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Whelan, Glen, Moon, Jeremy, and Orlitzky, Marc
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HUMAN rights & globalization ,SOCIAL responsibility of business ,INTERNATIONAL business enterprises ,INTERNATIONAL relations ,SOCIAL constructionism ,INTERNATIONAL cooperation ,POLITICAL participation - Abstract
This article contextualises current debates over human rights and transnational corporations. More specifically, we begin by first providing the background to John Ruggie’s appointment as ‘Special Representative of the Secretary-General on the issue of human rights and transnational corporations and other business enterprises’. Second, we provide a brief discussion of the rise of transnational corporations, and of their growing importance in terms of global governance. Third, we introduce the notion of human rights, and note some difficulties associated therewith. Fourth, we refer to Ruggie’s scholarly work on ‘embedded liberalism’, the ‘global public domain’ and ‘social constructivism’. Following this, we refer to the other five papers contained in this Journal of Business Ethics special issue, ‘Spheres of Influence/Spheres of Responsibility: Multinational Corporations and Human Rights’, and consider some of the potential obstacles to Ruggie’s recent suggestion that a ‘new consensus’ has formed, or is forming, around his ‘Protect, Respect and Remedy’ framework. We conclude by raising questions regarding the processes of consensus-building around, and the operationalisation of, Ruggie’s ‘Protect, Respect and Remedy’ framework. [ABSTRACT FROM AUTHOR]
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- 2009
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276. China, Regional Trade Agreements and WTO Law.
- Author
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SNYDER, Francis
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COMMERCIAL treaties ,GOVERNMENT policy ,REGIONALISM ,INTERNATIONAL economic integration ,FREE trade - Abstract
China's policy towards regional trade agreements (RTAs) will have a major impact on the international trading system, the debate about regionalism and multilateralism, and the policy of the WTO concerning RTAs. This article analyses China's RTAs, identifies many reasons underlying them, and proposes a three-fold typology for China's RTAs: economic integration agreements, standard regional trade agreements with other countries in the Asia-Pacific region, and bilateral free trade agreements with non-Asian countries. It then compares rules of origin, safeguards, and dispute settlement mechanisms in selected RTAs and evaluates them from the standpoint of WTO law. The article concludes, first, that the basic three-fold typology helps us to understand the objectives, organisation, and operation of China's RTAs and their relations to China's domestic structures, policy processes, legal and political culture and international and regional policies. Second, China's RTAs are generally WTO-compatible since they are drafted in the shadow of WTO law, even though WTO law does not always provide a detailed normative template. Finally, China has the challenge and the opportunity of contributing to the development of a new role for the WTO in managing RTAs. [ABSTRACT FROM AUTHOR]
- Published
- 2009
277. China's Environmental Governance: the domestic - international nexus.
- Author
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Chan, Gerald, Lee, PakK, and Chan, Lai-Ha
- Subjects
ENVIRONMENTAL protection ,ENVIRONMENTAL quality ,ADMINISTRATIVE & political divisions ,ENVIRONMENTAL policy ,ENVIRONMENTALISM - Abstract
This paper examines the connection between China's domestic governance and its involvement in global governance in environmental protection by studying the major actors and issues involved in the interaction between the domestic and international spheres of activities. These actors include international institutions, national and local governments, nongovernmental organisations, and others. The paper demonstrates that China has made some substantive progress in protecting its environment, but much more needs to be done. Internationally it seems to lack the will or the capability to make much contribution towards global environmental governance. However, because of its huge aggregate size, what it does or does not do to avert environmental degradation at home could have a significant impact on collective efforts to protect the environment at the global level. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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278. Envelope: interactive software for modeling and fitting complexisotope distributions.
- Published
- 2008
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279. An Epigenetically Derived Monoclonal Origin for Recurrent Respiratory Papillomatosis.
- Author
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Kunjoonju Stephen, Josena, Vaught, Lori E., Kang Mei Chen, Shah, Veena, Schweitzer, Vanessa G., Gardner, Glendon, Benninger, Michael S., and Worsham, Maria J.
- Abstract
Objective: To investigate the contribution of promoter methylation-mediated epigenetic events in recurrent respiratory papillomatosis tumorigenesis. Design: Archival tissue DNA, extracted from microdissected papilloma lesions, was interrogated for methylation status by means of the novel, multigene methylation specific multiplex ligation-dependent probe amplification assay. Subjects: Fifteen subjects with recurrent respiratory papillomatosis, 3 females and 12 males, all with adult onset of illness (age range, 23-73 years) except for 1 female patient with juvenile onset (1 year old). Results: Promoter hypermethylation was recorded in 14 of 15 cases, and 19 of 22 unique methylation-prone cancer genes in the multigene panel had altered DNA methylation in at least 1 laryngeal papilloma biopsy specimen. Identical abnormally methylated genes were found in 5 of 15 recurrent cases, of which the CDKN2B gene was hypermethylated in all 5 cases. Dissimilar epigenetic events were noted in the remaining cases. Conclusions: A clonal origin was derived for 5 of 15 recurrent respiratory papillomatosis biopsy specimens based on identical epigenetic events. The high frequency of epigenetic events, characterized by consistent promoter hypermethylation of multiple tumor suppressor genes, points to the use of gene silencing mechanisms in the pathogenesis of recurrent respiratory papillomatosis. [ABSTRACT FROM AUTHOR]
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- 2007
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280. Processes, procedures and journal development: Past, present and future.
- Author
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Armstrong, Steve and Wilkinson, Adrian
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PERIODICALS ,JOURNALISM ,LITERATURE ,AUTHORS ,MASS media - Abstract
This paper is written as an overview of developments relating to the Journal. The authors explain the background to their editorship and the plans and structures they implemented. They provide a progress report and also discuss the process of running the Journal so as to explain to potential authors how the systems operate and the philosophy of the Journal. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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281. THE CURIOUS INCIDENT OF THE LAW FIRM THAT DID NOTHING IN THE NIGHT-TIME.
- Author
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Regan Jr, Milton C.
- Published
- 2007
282. Establishing efficient siRNA knockdown in mouse embryonic stem cells.
- Author
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Chen, Stephen, Choo, Andre, Wang, Nai-dy, Heng-Phon Too, and Oh, Steve
- Subjects
EMBRYONIC stem cells ,GENE transfection ,NUCLEIC acids ,GENETIC transformation ,GENETICS ,BIOCHEMISTRY - Abstract
FAM-labeled oligo dT (FAMdT) was utilized as a means to gauge efficient transfection of small nucleic acids into mouse embryonic stem cell (mESC) colonies. Using colonies grown overnight, transfection was restricted largely to the periphery of the colonies with only a 40% decrease in Oct-3/4 RNA transcript levels following cognate Oct-3/4, small interfering RNA (siRNA) delivery. However, transfection of mESC 4 h after seeding gave greater than 90% cells being successfully transfected based on quantitative real-time PCR detection of ∼90% Oct-3/4 RNA transcript knockdown. This method provides an economical and efficient means by which to determine effective transfection conditions, and establish efficient siRNA knockdown of reportedly difficult to transfect cell lines such as mESC. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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283. Differential response of lymphatic, venous and arterial endothelial cells to angiopoietin-1 and angiopoietin-2.
- Author
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Nguyen, Vicky P. K. H., Chen, Stephen H., Trinh, Jason, Kim, Harold, Coomber, Brenda L., and Dumont, Daniel J.
- Subjects
CELLS ,ENDOTHELIUM ,CELL proliferation ,CELL migration ,CYTOLOGY - Abstract
Background: The lymphatic system complements the blood circulatory system in absorption and transport of nutrients, and in the maintenance of homeostasis. Angiopoietins 1 and 2 (Ang1 and Ang2) are regulators of both angiogenesis and lymphangiogenesis through the Tek/Tie-2 receptor tyrosine kinase. The response of endothelial cells to stimulation with either Ang1 or Ang2 is thought to be dependent upon the origin of the endothelial cells. In this study, we examined the effects of the angiopoietins on lymphatic, venous and arterial primary endothelial cells (bmLEC, bmVEC and bmAEC, respectively), which were isolated and cultured from bovine mesenteric vessels. Results: BmLEC, bmVEC and bmAEC cell populations all express Tie-2 and were shown to express the appropriate cellular markers Prox-1, VEGFR3, and Neuropilin-1 that define the particular origin of each preparation. We showed that while bmLECs responded slightly more readily to angiopoietin-2 (Ang2) stimulation, bmVECs and bmAECs were more sensitive to Ang1 stimulation. Furthermore, exposure of bmLECs to Ang2 induced marginally higher levels of proliferation and survival than did exposure to Ang1. However, exposure to Ang1 resulted in higher levels of migration in bmLECs than did to Ang2. Conclusion: Our results suggest that although both Ang1 and Ang2 can activate the Tie-2 receptor in bmLECs, Ang1 and Ang2 may have distinct roles in mesenteric lymphatic endothelial cells. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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284. Surgical treatment of infrabony defects with autologous platelet concentrate or bioabsorbable barrier membrane: a prospective case series.
- Author
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Papli, Rain and Chen, Stephen
- Subjects
GROWTH factors ,WOUND healing ,GUIDED tissue regeneration ,THERAPEUTICS ,PERIODONTAL disease ,SURGERY - Abstract
Background: Autologous platelet concentrate (APC) contains concentrated platelet-derived growth factors that promote wound healing and tissue regeneration. The purpose of this prospective case series was to compare the treatment effects of an intralesional graft of APC to guided periodontal regeneration (GPR) using a bioabsorbable barrier membrane (MEM) over a 52-week period.Methods: Five patients were recruited for the study from two private periodontal practices. There were four females and one male having a mean age of 33 +/- 10.23 years. The five selected contralateral teeth had similar, but not identical, combinations of 1-, 2-, and 3-wall infrabony defects not involving furcations. Probing depths (PDs) of the defects were > or = 6 mm and had radiographic angular infrabony defects > or = 4 mm in depth. The patients had no local or systemic contraindications to minor oral surgical procedures and had not taken systemic antibiotics for > or = 6 months before the commencement of the study. All patients had completed cause-related periodontal therapy up to 6 months previously and had achieved a satisfactory level of oral hygiene. The selected teeth did not have purulent discharge from the pockets and responded normally to pulp sensibility testing. Patients were excluded if they smoked, were pregnant or lactating, or were allergic to any of the materials to be used in the treatment. At baseline and 8, 26, and 52 weeks after surgery, PDs, recession (REC), presence of plaque, and bleeding on probing were recorded, and standardized periapical radiographs were taken. At the time of surgery, the vertical distance to the deepest point of the infrabony defect was measured from the cemento-enamel junction (CEJ) to the buccal and lingual bone crests. The vertical distance to the base of the defect from the CEJ and defect angles were obtained from radiographs. The paired contralateral infrabony defects were treated with a graft APC or MEM after debridement and EDTA root surface conditioning. Surgical flaps were prepared and closed according to the papilla preservation method. Post-surgical care was provided at 1, 2, 8, 26, and 52 weeks after surgery. A mouthwash of 0.2% chlorhexidine gluconate was used twice daily for the first 3 weeks after surgery. Mean PD, REC, clinical attachment level (CAL), radiographic bone loss, and defect angle were computed and compared for each data collection point.Results: From baseline to 52 weeks, a mean PD reduction of 3 +/- 1.41 mm (APC) and 3.6 +/- 1.67 mm (MEM), mean REC increase of 0.8 +/- 1.01 mm (APC) and 0.6 +/- 1.14 mm (MEM), mean CAL gain of 2.2 +/- 1.79 mm (APC) and 3 +/- 1 mm (MEM), mean radiographic bone fill of 3.24 +/- 2.85 mm (APC) and 2.7 +/- 1.9 mm (MEM), and mean defect-angle increase of 15.25 degrees +/- 18.21 degrees (APC) and 22.4 degrees +/- 27.3 degrees (MEM) were calculated. CAL gain was not related clearly to defect angle at baseline, although radiographic bone fill was slightly greater for defect angles <39.4 degrees +/- 7.88 degrees.Conclusions: This case series of five similar, but not identical, bilateral paired infrabony defects suggests that an APC graft achieves a similar CAL gain and PD reduction to GPR using an MEM over a 52-week period. A larger, controlled clinical trial is needed to evaluate further the efficacy of autologous platelet-rich plasma for the treatment of infrabony defects. [ABSTRACT FROM AUTHOR]- Published
- 2007
- Full Text
- View/download PDF
285. A Social Exchange Perspective on Business Ethics: An Application to Knowledge Exchange.
- Author
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Chen, Stephen and Choi, Chong Ju
- Subjects
SOCIAL exchange ,BUSINESS ethics ,SOCIAL norms ,INTERPERSONAL relations ,JOINT ventures ,CODES of ethics ,RESEARCH & development partnership ,INTELLECTUAL property ,KNOWLEDGE management ,STRATEGIC alliances (Business) - Abstract
An extensive body of literature in sociology and anthropology has shown that different societies have developed different structures for exchange of items such as goods, status and information. The purpose of this paper is to demonstrate how social exchange theory can help illuminate many of the underlying bases of different ethical perspectives in debates about social exchanges. Social exchange theory is applied to three common types of knowledge exchange -- R&D joint ventures, commercial intellectual property exchange and academic exchange. Two key factors that underlie different ethical perspectives are shown to be differences in structures for social exchange and differences in views of the alienability of knowledge from its originator. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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286. High density cultures of embryonic stem cells.
- Author
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Oh, Steve K.W., Fong, Wey Jia, Teo, Yawen, Tan, Heng Liang, Padmanabhan, Jayanthi, Chin, Angela C.P., and Choo, Andre B.H.
- Published
- 2005
- Full Text
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287. Treatment outcomes for adolescent ectodermal dysplasia patients treated with dental implants.
- Author
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SWEENEY, I. P., FERGUSON, J. W., HEGGIE, A. A., and LUCAS, J. O.
- Subjects
DENTAL implants ,ECTODERMAL dysplasia ,DENTURES ,ARTIFICIAL implants ,ORAL surgery ,TEETH ,PEDIATRIC dentistry ,DENTISTRY - Abstract
To evaluate dental implant survival in patients with ectodermal dysplasia (ED). To assess patterns of hypodontia in this patient group. A retrospective analysis of the use of dental implants in ED patients treated at the Royal Children's Hospital, Melbourne. Sixty-one implants were placed into 14 patients (nine male and five female). The mean age of patients receiving maxillary implants was 18 years 6 months (range 17 years 9 months−20 years 0 months) and mandibular implants was 17 years 5 months (range 12 years 2 months−21 years 11 months). The mean follow-up period was 3 years 4 months (range 1 year 18 months−5 years 1 month). Forty-three implants were placed in the anterior mandible, three in the posterior mandible and the remaining 15 in the anterior maxilla. Of the 61 implants placed, 54 [88·5%] successfully integrated and were able to be restored. Three of the 15 implants placed into the anterior maxilla [20%] failed, while four of the 46 in the anterior mandible failed [8·7%]. Five of the 14 patients [35·7%] had at least one implant fail prior to abutment connection. At the 12-month review appointments, 41 of the integrated 54 implants [76%] were reviewed and classed as successful, giving an overall success at follow up of 67·2%. Thirteen implants [21·3%] were unable to be reviewed owing to geographical reasons. Teeth most likely to be present in the maxilla were the central incisors [71%], first molars [54%] and canines [43%], whereas in the mandible they were the canines [53%] and the first premolars and first molars [40%]. Dental implants can be placed, restored and loaded in ED patients. Maxillary teeth most likely to be present are the central incisors, canines and first molars, whereas in the mandible the canines, first premolars and molars are most likely to be present. Prior to cessation of growth, implant placement in the symphyseal region of the anterior mandible may be performed with caution. Despite the limited numbers and with due consideration to jaw development, the results support the continual use of endosseous dental implants in this group of patients for optimal clinical outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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288. Global Strategic Partnerships between MNEs and NGOs: Drivers of Change and Ethical Issues.
- Author
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MILLAR, CARLA C. J. M., CHOI, CHONG JU, and CHEN, STEPHEN
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NONGOVERNMENTAL organizations ,NONPROFIT organizations ,INTERNATIONAL business enterprises ,INTERNATIONAL agencies ,INTERNATIONAL relations ,STRATEGIC alliances (Business) ,BUSINESS - Abstract
Nongovernment organizations (NGOs) are an example of an institution that plays an increasingly important role for business, organizations and society, and needs to be considered in international business research. This article provides a conceptual integration and synthesis of the interrelationship of the roles of nongovernment organizations and the multinational corporations. A conceptual framework is developed that shows the potential role of NGOs in the transfer of institutional knowledge practices among countries or national business systems. A description is given on the factors behind the increasing trend for partnerships between NGOs and multinational corporations and the value that they can bring to both parties.
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- 2004
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289. Creating a knowledge-based city: the example of Hsinchu Science Park.
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Chen, Stephen and Choi, Chong Ju
- Abstract
The purpose of this paper is to highlight the role of tacit knowledge in successful knowledge-based cities. It focuses on a case study of Hsinchu Science Park in Taiwan. The growth of successful knowledge-based cities is dependent on three interrelated processes that create and transfer tacit knowledge in cities: local knowledge creation, transfer of knowledge from external sources and transfer of that knowledge into productive activities. Researchers need to focus on processes for the creation and transfer of tacit knowledge in cities, and designers and policy makers of knowledge-based cities need to focus on creating tacit knowledge in cities. Discusses the connection between tacit knowledge and growth of global cities. [ABSTRACT FROM AUTHOR]
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- 2004
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290. Lead contamination of raisins sold in Canada.
- Author
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Dabeka, R. W., McKenzie, A. D., and Pepper, K.
- Subjects
RAISINS ,LEAD toxicology - Abstract
Graphite-furnace atomic absorption spectrometric analysis of raisins imported in 1993-95 from different countries into Canada showed that raisins from Turkey had unusually high lead levels. The Turkish raisins (n=18) contained a mean (range) of 0.93 (0.056- 3.1)mg kg[sup -1] lead, whereas five samples from Australia, South Africa, Iran, Mexico and Chile contained a mean of 0.0085 (0.005-0.010)mg kg[sup -1]. Acid-washing studies showed that most of the lead in the Turkish raisins was on the surface of the fruit. The impact of eating the raisins on the dietary intake of lead was estimated for Canadians of different ages and sexes. For example, eating raisins from Turkey would increase the dietary intake of lead by 1-4-year-old children from 0.97 to ∼2.2 μg kg[sup -1] body weightday[sup -1]. The source of the lead was traced to use of a copper fungicide contaminated with high lead levels. Currently, lead levels in raisins imported from Turkey are low and approach levels in raisins from other countries. Uncontaminated raisins contain ∼0.01mg lead kg[sup -1], and a maximum tolerance for lead in raisins of 0.1mg kg[sup -1] is achievable irrespective of the type of raisin or country of origin. Therefore, consideration should be given to proposing this level as a maximum tolerance for lead in raisins. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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291. Notes.
- Subjects
PERSONNEL changes - Abstract
The article presents a list of persons involved with the publication of the "Journal of Business." The persons who received promotions are, Dan Adelman, Allen C. Amason, Jeffrey Beatty, Shlomo Benartzi, Antonio Bernardo, Mark Browne, Ann K. Buchholtz, Kim Campbell and William T. Charlton, Donald Eisenstein, Ellen Engel, George Franke, Robert Gertner, Wallace M. Booth, Austan Goolsbee, Richard Green, Joanne E. Hale, Kevin Hallock, Bridget Hiedemann and Richard Houston. The persons who submitted their resignations are Manju K. Ahuja, Sally Blount-Lyon, Patricia H. Bom, Julia K. Brazelton, L. David Brown, Michelle L. Brown, Shane Corwin, June Cotte, Rajiv Dant, Todd DeZoort, Paul Dholakis, Joseph A. Fields, Lisa M. Gaynor, Bonnie Glassberg, Robert Goldstein, Wayne Hochwarter, Robin Hogarth, Jeffery Inman, Michael Lapre, Richard P. Larrick, G. Keong Leong, Dale Harrison McKnight, Victoria Mitchell, Allen Mottur, Barry Nault, Craig Olson and John F. Pfaff, Wayne Rochester, Harry Sapienza and Melissa Schilling.
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- 2002
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292. Interactive electronic marketing and brand management.
- Author
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Uncles, Mark
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INTERNET ,INTERNET marketing ,PRODUCT management - Abstract
Editorial. Focuses on the impact of the development of the Internet on marketing and brand management. Discussion on the creation and use of Web sites by marketers; Important considerations in the advocacy of the technology; Introduction of papers on empirical studies of brand management.
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- 2001
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293. The case of Jessica Chang.
- Author
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Chen, Stephen and Leong, Frederick T.L.
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CAREER development ,EMPLOYMENT of Asian Americans - Abstract
Presents a case study on an Asian American's career development. Previous use of the case in career development training; Personal background; Early years at work; Selection of role models; Mid-career crisis experienced by the subject.
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- 1997
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294. Aesthetic Management Of Gingival Recession Resulting From Endodontic Perforation.
- Author
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Chen, Stephen T.
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- 1997
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295. A comparison of three algorithms for finding fundamental cycles in a directed graph.
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Ryan, Doris R. and Chen, Stephen
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- 1981
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296. A genetic linkage map of rat chromosome 20 derived from five F2 crosses.
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Kawahito, Y., Remmers, Elaine F., Wilder, R. L., Longman, Ryan E., Gulko, Pércio S., Wang, Jianping, Chen, Stephen, Chang, Lisa, Reese, V. R., Dracheva, Svetlana, Ge, Lynn, Hoffman, Jean H., Shepard, Jennifer, Cannon, Grant W., and Griffiths, Marie M.
- Published
- 1998
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297. Intelligent networking for the global marketplace.
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Chen, S., Fujioka, M., and O'Reilly, G.
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- 1993
- Full Text
- View/download PDF
298. Abstracts Submitted for 56th Annual Scientific Meeting American College of Gastroenterology.
- Subjects
GASTROENTEROLOGY ,ONIONS ,GASTROESOPHAGEAL reflux ,FISTULA ,ESOPHAGEAL varices ,ESOPHAGUS diseases - Abstract
Presents abstracts of studies submitted for the Scientific Meeting of the American College of Gastroenterology to be held on October 14 to 16, 1991. "The Effect of Raw Onions on the Pathophysiology of Acid Reflux," by Melvin Allen; "Malignant Aerodigestive Fistula: A Six Year Experience," by James Bredfeldt; "Endoscopic Band Ligation of Esophageal Varices: Early Experience With a New Technique," by Pamela Connors.
- Published
- 1991
299. On the Sethi-Ullman algorithm.
- Author
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Chen, Stephen
- Published
- 1975
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300. Recent trends in Buddhist music research in China.
- Author
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Qing, Tian
- Abstract
Despite two millennia of history, the Buddhist music of China has only recently become the focus for systematic academic research. This neglect resulted from social and political forces which made such research undesirable or difficult. The present paper traces three stages of research in this century: a period of initial “discovery” of the music and its significance during the early 1930s, interrupted by civil unrest and war, a period of fervent fieldwork beginning in the late 1940s (terminated by the Cultural Revolution), focussing mainly on documentation through collection and transcription (but hampered by a lack of recording equipment) with a few sociological and historical studies; and the period since the late 1970s, yielding extensive regional, comparative and historical studies, the production of archival and commercial recordings, and a stimulus to actual performance, all resulting in increasing respect for and interest in the tradition within China. [ABSTRACT FROM PUBLISHER]
- Published
- 1994
- Full Text
- View/download PDF
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