• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 280
  • 115
  • 61
  • 33
  • 14
  • 7
  • 7
  • 6
  • 6
  • 6
  • 4
  • 3
  • 3
  • 2
  • 2
  • Tagged with
  • 646
  • 273
  • 119
  • 106
  • 82
  • 69
  • 68
  • 63
  • 60
  • 56
  • 49
  • 48
  • 44
  • 44
  • 43
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

An Exploration of the Causes of Success and Failure of Managed Change

Moore, Michael 01 January 2018 (has links)
Change management (CM) and organizational development are mature industries with decades of research and development. Yet, failure rates stated for organizational change initiatives remain high at 70%. This failure rate suggests that 30% of change initiatives were successful, but no reports of these successes were found in the literature. The overarching question considered the experiences of change leaders of successful CM initiatives. The conceptual framework for this research consisted of change models defined by Burke, Kotter, Schein, and others. The primary purpose of this study was to identify the strategies used by successful change leaders. 10 phone interviews with senior employee change leaders in education, pharmaceuticals, and industrial manufacturing companies across the United States provided the data for this empirical phenomenological study. Data were collected using open, conversational interviews. A modified van Kaam method was used to analyze the data. The most important themes identified were collaborative leadership and open communication. The results indicated how these strategies were used without relying on the literature to guide them. Leaders relied on intuition and independently, aligned to aspects suggested by the framework authors, but differed in their applications. Using the results of this study may improve the implementation of change projects and success rates, thus reducing organizational costs and improving organizational performance. This may have a positive social change effect on the surrounding community, as project successes may lead to reduced employee job losses and reduced concomitant job losses and the associated economic decline.
162

Veterans Health Administration discharge telephone follow-up and 30-day hospital readmissions

Goss, Tyler 15 December 2015 (has links)
Healthcare costs have risen from 13.8% in 2000 to 17.9% in 2009 (Gordon, Leiman, Deland, & Pardes, 2014). Poor transitional care has been identified as a cause of the high healthcare costs (Naylor et al., 2013; Obama, 2013). In 2009, the Department of Veterans Health Administration (VHA) implemented a national reform of outpatient care to create Patient-Aligned Care Teams (PACTs) with a goal to improve transitional care and reintegration into outpatient care through registered nurse case managers conducting discharge telephone follow-up calls. However, discharge telephone follow-up calls have not been explored within the VHA. This study explored the relationships among discharge telephone follow-up calls, selected Veteran characteristics including the length of index hospital stay, and 30-day all cause hospital readmissions between fiscal years 2011 and 2013. Hospital readmissions were explored in parallel time periods to the timing of the discharge telephone follow-up calls. Study data were collected retrospectively from VHA inpatient and outpatient records. Descriptive statistics, measures of central tendency, bivariate statistics, and logistic regression were used to analyze the data. The study found 124,069 Veterans were discharged from the VHA from 2011 to 2013. Of those discharges, 15,954 (12.86%) were readmitted to the hospital within 30 days and 35.06% of the readmissions occurred within the first seven days after discharge. Discharge telephone follow-up calls increased from 312 in 2011 to 26,549 in 2013. Increasing Veteran age, number of comorbidities, length of index hospital stay, and being identified as frequently hospitalized in the previous year were significantly related to hospital readmissions at each of the hospital readmission time frames (within two days, between three and seven days, and between eight and thirty days after hospital discharge). This study identified a relationship between discharge telephone follow-up calls and the parallel hospital readmission time period. However, only discharge telephone follow-up calls within two days were found to decrease the likelihood of hospital readmissions and only hospital readmissions within two days after discharge (OR=0.595). The relationships between discharge telephone follow-up calls and hospital readmissions potentially explains previously mixed results and suggests two potential explanations. One, discharge telephone follow-up calls have a limited relationship to hospital readmissions and a short duration of protective effects preventing hospital readmissions. The second explanation is self-selection bias confounds the relationship between discharge telephone follow-up calls and hospital readmissions. Both explanations suggest future research and clinical practice should focus on exploring bundled transitional care interventions as a method to reduce hospital readmissions.
163

Estudo numérico da transição laminar-turbulenta de um jato planar binário / Numerical study of the laminar-turbulent transition of a coaxial binary jet

Chiumento, Vinícius Hagemeyer 08 August 2019 (has links)
A eficiência de motores a combustão está diretamente relacionada a mistura dos reagentes. O que é muito desejado em todos os sistemas, inclusive em sistemas aeroespaciais onde a combustão ocorre de forma contínua como nos motores a jato, motores de foguete, ramjet e scramjet. No caso do scramjet a combustão ocorre em regime supersônico e conhecer como os dois fluidos se misturam na câmera de combustão é muito importante pois o tempo de residência na câmera é muito reduzido, aumentando a importância de uma mistura homogênea para a eficiência da combustão. Em determinados casos pequenas pertubações em um jato vão se amplificar podendo ocasionar a transição do escoamento laminar para turbulento. O que é desejado visto que escoamentos turbulentos são caracterizados pela grande capacidade de mistura. No presente trabalho estudamos a estabilidade de jatos coaxiais composto por dois fluídos com pequenas pertubações na base para escoamentos supersônicos para casos bidimensionais e tridimensionais. O escoamento foi investigado utilizando simulação numérica e a teoria de estabilidade linear, os resultados de ambos os métodos foram comparados, casos com pertubações bidimencionais e tridimencionais foram analizados. As simulações numéricas foram realizadas utilizando diferenças finitas de alta ordem de precisão para a discretização espacial. A integração temporal foi feita utilizando o método de Runge-Kutta de quarta ordem. Os resultados de ambos os métodos mostraram uma boa concordância. / The efficiency of combustion engines are strict related to the mixing between reagents. That is very desire in every aerospace propulsion system, when the combustion is continuous such as rocket engines, ramjets and scramjets. The combustion in scramjet occurs in supersonic speed ith a very small resilience time, know how two fluids are mixed in this case is very important because are direct related to the efficiency of the combustion. In such cases small disturbances in a jet flow can be amplified until occur the transition from a laminar flow to a turbulent flow, that is desired because the great capacity of mixing of turbulent flows. In this work are studied the jet flow stability when the jet are composed by two fluids with small disturbances in the base for supersonic flows in bidimensional and tridimensional cases. The numerical results are obtained by numerical simulation and linear stability theory (LST). High order finite difference schemes are adopted for spatial derivatives. The integration in time are caried out by a fouth order Runge-Kutta scheme. The results obtained by numerical simulation and linear stability theory show good agreement.
164

DFT calculations on the interaction of phosphazenes with transition metals : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Chemistry at Massey University, Palmerston North

Davidson, Ross James January 2007 (has links)
The electronic structure of substituted cyclic phosphazenes has been investigated using Density Functional Theory (DFT) and Natural Bond Order (NBO) analysis. NBO analysis shows covalent, ionic and negative hyper-conjugation interactions all contribute to the electronic structure of cyclic phosphazenes. The geometric and electronic structural changes that occur when transition metals are coordinated to the nitrogen atom of the phosphazene ring have been analyzed using the NBO model. The bonding of transition metal ions with the ring nitrogen on the phosphazene was investigated by modeling hexakis(2-pyridyloxy)cyclotriphosphazene, hexakis(4-methyl-2-pyridyloxy)cyclotriphosphazene and octakis(2- pyridyloxy)cyclotetraphosphazene with different metal ions (Co(II), Ni(II), Cu(II), Zn(II)) in their assorted configurations with DFT as implemented in the Gaussian03 package. First-row transition metals bind to the phosphazene ring with simple s donor behaviour via the ring nitrogen. The lengthening of the PN bonds adjacent to the coordinated metal centre is a result of electron density being removed from the PN bonding orbitals and going into the 4s orbital of the metal ion. Investigating the pyridine substituents on the phosphazene ring showed that these can affect the PN bonds in a similar fashion, although weaker, to the transition metals. This effect is the result of the pyridine nitrogen lone pair affecting the negative hyperconjugation component of the PN bond. Coupling between two metal atoms coordinated to the phosphazene ring was investigated by DFT calculations, which showed molecular orbitals in both the tricyclic and tetracyclic phosphazene capable of providing an ‘electron density bridge’ between the metal centres. These results are in accord with ESR and magnetic susceptibility results, which can be explained in terms of weak antiferromagnetic coupling between metal ions. The cyclic phosphazenes are model compounds for polyphosphazenes and the results obtained from this work will provide insight into the electronic properties of this important class of inorganic polymers.
165

Australian Defence in transition: responding to new security challenges

Wing, Ian, Politics, Australian Defence Force Academy, UNSW January 2002 (has links)
The conceptual understanding of security and the practicalities of national defence are interdependent. In many countries both are undergoing significant change. This work provides an international context but focuses on Australian defence, arguing that a transition is underway from old security thinking to new, and that this is evidenced by changes in policies and practical activities. The aim of this work is to demonstrate the interdependence between the current reconceptualisation of security and the practicalities of national defence. Old security thinking concerns military power relationships between states, in contrast with new security thinking, which uses a broader conceptual framework. These are described, providing benchmarks for the subsequent analysis. While it is acknowledged that change has occurred in security thinking throughout history, those developments observed since the end of the Cold War and the rise of globalisation signify a fundamental shift. To explore this shift, recent developments in the defence policies and military activities of four relevant nations are examined, providing an international context for the consideration of the primary case study of Australian defence. This case study draws on historical descriptions and empirical data to analyse developments in four spheres - Australian defence policy, current Australian Defence Force activities, recent military developments and contemporary Australian public debate. The weight of evidence supports the thesis of a transition in both security thinking, described as transitional security thinking, and ADF activities. Tensions are observed between the requirements of defending a nation against attack, and contributing to the expanding requirements of the broadened security agenda. Despite these tensions, the expansion in both security thinking and the associated activities of armed forces, is likely to continue. This expansion has important implications for Australia???s defence capabilities which are increasingly required to meet the demands of refocused national security. These demands contribute to the pressing challenges of convergence and overstretch. A strategy of integration is recommended to address these challenges and it follows the principles of whole-of-government security and sustainable partnerships. The application of these principles will require the ADF to emphasise capabilities with versatility and adaptability.
166

Local NGOs in national development: The case of East Timor

Hunt, Janet, janethunt@homemail.com.au January 2008 (has links)
This thesis explores the roles and experiences of local East Timorese non-government organisations through the multiple transitions which accompanied East Timor's process of independence in the period 1999-2004. It explores how NGOs attempted to influence the changing environment in which they were operating, particularly in the development of the new nation. In doing so, it examines how the actual experience of these local NGOs relates to theories of civil society and NGOs in the various phases of transition to democracy, state and nation building and post-conflict peacebuilding. After reviewing literature relating to the role of civil society and NGOs in democratisation, development and peacebuilding, and identifying some key issues to explore, the study turns to the particular context of East Timor. It summarizes the colonial history, with a particular focus on governance, development and the emergence of civil society and NGOs in that territory, and the phases of the transition. It then focuses closely on six leading East Timorese NGOs, which between them reflect different organisational origins and sectoral interests and which were perceived to be playing significant roles within the NGO community. The case study chapters describe briefly the history of each NGO, then trace their stories over an approximately five year period. They explore how the visions, strategies, programs and organisational systems of these NGOs changed as the context changed. The case studies show how adaptive these NGOs were, how excluded some of them were by the huge influx of international players after the ballot, but how, in the absence of a legitimate government, they were included in various processes in a number of important ways during the UNTAET period. These studies also reveal some of the challenges the NGOs faced as the new government took over in May 2002. The study concludes by summarising the changing roles and capacities of the NGOs, highlighting the many roles which local NGOs played throughout the study period, and the way in which they met new demands placed upon them. It identifies capacities critical for these NGOs' survival and development, and identifies some strategies which the NGOs themselves identified as useful in helping them attain these. It also identifies some areas which they found challenging and where more capacity development may have been valuable. Finally the study reflects on the actual experiences of Timorese NGOs compared to theory and experiences elsewhere relating to democracy, development and peacebuilding. The findings, which emphasise the changing relationship of the new state to its citizens, suggest that the civil society and development practice, which has been strongly based on de Tocqueville's approach to civil society, is not particularly helpful in a post-conflict setting. Instead, an adapted Gramscian approach, viewing civil and political society as interrelated sites in which a struggle to embed non-violent means of apportioning power are being waged, could be of greater analytic and practical value.
167

The Khmer Rouge Tribunal : Searching for Justice and Truth in Cambodia

Persson, Fredrik January 2009 (has links)
<p>The aim of this thesis is to analyze the relationship between the Khmer Rouge tribunal in Cambodia and the national reconciliation process. A qualitative method involving secondary source analysis as well as field study interviews is being used. The point of departure is a theoretical framework of reconciliation assembled from different sources, as there seems to be no coherent and widely accepted framework available for use. An analysis model is constructed, focusing on the concepts of justice and truth. The findings indicate that reconciliation is nowhere near fulfillment, although a few steps towards national reconciliation have been taken. The Cambodian process of reconciliation is only at its earliest stages. Furthermore, the findings suggest that there is a strong relationship between the tribunal and the reconciliation process, inasmuch as the tribunal is perceived to have positive effects on reconciliation, and that continued reconciliation would not be possible without the tribunal. The tribunal is not the only part in reconciliation though, it is a necessary but not sufficient precondition for continued reconciliation. The tribunal can not bring reconciliation close to fulfillment on its own, other mechanizms must be involved in order to do so.</p>
168

The role of transitional justice in the midst of ongoing armed conflicts : the case of Colombia

Figari Layús, Rosario January 2010 (has links)
Between 2002 and 2006 the Colombian government of Álvaro Uribe counted with great international support to hand a demobilization process of right-wing paramilitary groups, along with the implementation of transitional justice policies such as penal prosecutions and the creation of a National Commission for Reparation and Reconciliation (NCRR) to address justice, truth and reparation for victims of paramilitary violence. The demobilization process began when in 2002 the United Self Defence Forces of Colombia (Autodefensas Unidas de Colombia, AUC) agreed to participate in a government-sponsored demobilization process. Paramilitary groups were responsible for the vast majority of human rights violations for a period of over 30 years. The government designed a special legal framework that envisaged great leniency for paramilitaries who committed serious crimes and reparations for victims of paramilitary violence. More than 30,000 paramilitaries have demobilized under this process between January 2003 and August 2006. Law 975, also known as the “Justice and Peace Law”, and Decree 128 have served as the legal framework for the demobilization and prosecutions of paramilitaries. It has offered the prospect of reduced sentences to demobilized paramilitaries who committed crimes against humanity in exchange for full confessions of crimes, restitution for illegally obtained assets, the release of child soldiers, the release of kidnapped victims and has also provided reparations for victims of paramilitary violence. The Colombian demobilization process presents an atypical case of transitional justice. Many observers have even questioned whether Colombia can be considered a case of transitional justice. Transitional justice measures are often taken up after the change of an authoritarian regime or at a post-conflict stage. However, the particularity of the Colombian case is that transitional justice policies were introduced while the conflict still raged. In this sense, the Colombian case expresses one of the key elements to be addressed which is the tension between offering incentives to perpetrators to disarm and demobilize to prevent future crimes and providing an adequate response to the human rights violations perpetrated throughout the course of an internal conflict. In particular, disarmament, demobilization and reintegration processes require a fine balance between the immunity guarantees offered to ex-combatants and the sought of accountability for their crimes. International law provides the legal framework defining the rights to justice, truth and reparations for victims and the corresponding obligations of the State, but the peace negotiations and conflicted political structures do not always allow for the fulfillment of those rights. Thus, the aim of this article is to analyze what kind of transition may be occurring in Colombia by focusing on the role that transitional justice mechanisms may play in political negotiations between the Colombian government and paramilitary groups. In particular, it seeks to address to what extent such processes contribute to or hinder the achievement of the balance between peacebuilding and accountability, and thus facilitate a real transitional process. / Zwischen 2002 und 2006 hat die kolumbianische Regierung von Álvaro Uribe einen Demobilisierungsprozess von paramilitärischen Gruppen und der Implementierung von Transitional Justice-Mechanismen durchgeführt als einem politischen Versuch, Frieden in Kolumbien durchzusetzen. Der Demobilisierungsprozess wurde durch einen sondergesetzlichen Rahmen geregelt: durch das Gesetz 782, das Dekret 128 und das Gesetz 975. Insbesondere das Gesetz 975 aus dem Jahr 2005, auch bekannt als das „Gesetz für Gerechtigkeit und Frieden“ (Ley de Justicia y Paz), bietet Strafmilderung für angeklagte Mitglieder illegaler Gruppen, die Verbrechen gegen die Menschlichkeit und Mord begangen haben. Um diese Strafmilderung in Anspruch nehmen zu können, sind die angeklagten Ex-Kombattanten im Gegenzug aufgefordert, Informationen über ihre ehemalige Gruppe zu erteilen und illegal angeeignete Güter auszuhändigen. Um den Demobilisierungsprozess im Einklang mit Transitional Justice-Prinzipien umzusetzen, wurden eine Vielzahl von Institutionen eingerichtet: acht Sondergerichtskammern, eine Sondereinheit der Staatsanwaltschaft (Unidad Nacional de Fiscalia para la Justicia y la Paz), ein staatlicher Fonds für Entschädigung (Fondo de Reparación) und eine Nationale Kommission für Wiedergutmachung und Versöhnung (Comisión Nacional de Reparación und Reconciliación). In Kolumbien herrscht seit mehr als 40 Jahren ein bewaffneter Konflikt. Es ist der längste bewaffnete Konflikt in der westlichen Welt. An diesem Konflikt sind der Staat, die rechtsgerichteten Paramilitärs und linksgerichtete Guerillagruppen beteiligt. Bis heute hat der Staat in weiten Teilen des Landes de facto kein Gewaltmonopol über einige Gebiete, die stattdessen von der Guerilla oder den Paramilitärs beherrscht werden. Die paramilitarischen Gruppen sind für die überwiegende Zahl von Menschenrechtsverletzungen seit mehr als 30 Jahren verantwortlich. Als Folge wurden tausende Bauernfamilien von ihrem Land vertrieben. Kolumbien steht mit drei Millionen Binnenvertriebenen nach dem Sudan weltweit an zweiter Stelle. Neben Bauern sind auch andere Gruppen Opfer des Konflikts, vor allem Afro-Kolumbianer, Frauen, Gewerkschaftsfunktionäre, Menschenrechtsverteidiger und Journalisten. Vor diesem Hintergrund ist eine wesentliche Voraussetzungen für einen Übergang von Konflikt- zu Frieden, dass der Staat die Garantie der Nicht-Wiederholung der vorausgegangenen Verbrechen und die Stärkung der demokratischen Bürgerrechte sicherstellt. In diesem Zusammenhang sind Transitional Justice-Instrumente, wie u. a. Strafverfolgungen und Amnestie, Wahrheits- und Versöhnungskommissionen, Wiedergutmachungen und Demobilisierungsprozesse zu sehen, die im Rahmen von Übergangsprozessen eingesetzt werden. Sie verfolgen das Ziel, die Vergangenheit eines gewaltsamen Konfliktes oder Regimes aufzuarbeiten, um so den Übergang zu einer nachhaltig friedlichen demokratischen Gesellschaftsordnung zu ermöglichen. Einerseits wird mit Hilfe von Transitional Justice-Instrumenten versucht, Gerechtigkeit und Entschädigung für die Opfer herzustellen. Andererseits sollen die angeklagten Täter mit Hilfe von Amnestie und Wiedereingliederungsprogrammen in die Gesellschaft reintegriert werden. So steht die Anwendung dieser Instrumente einem Dilemma zwischen Frieden und Gerechtigkeit, Verantwortlichkeit und Straflosigkeit, Strafe und Vergeben gegenüber. Diese Arbeit evaluiert die Umsetzung des Demobilisierungsprozesses, die gerichtlichen Prozesse und die Wiedergutmachungspolitik. Wichtig ist es zu analysieren, ob der Demobilisierungsprozess der paramilitärischen Gruppen einen Übergang von Krieg zu Frieden zum Ergebnis hat. Ein Übergang sollte die Erfüllung der oben erwähnten Bedingungen – Ausübung des legitimen Gewaltmonopols durch den Staat, Garantie der Nicht-Wiederholung von Gewaltverbrechen und die Stärkung von Bürgerrechten – bedeuten.
169

Identifying Genetic Factors and Processes Involved in the Cardiac Perinatal Transitional Program

Kouri, Lara 03 May 2011 (has links)
Cardiomyocyte perinatal development is characterized by the transition from a hyperplastic to a hypertrophic growth. We hypothesize that genetic factors and processes in the cardiac perinatal transitional program can be identified by a systematic analysis of different stages in heart development. Microarray expression patterning of mRNAs and microRNAs uncovered a perinatal cardiogenomic switch between 5 and 7 days post-birth. Gene ontology analysis revealed cellular and metabolic processes as highly representative Biological Processes. Moreover, approximately 40% of known mice transcription factors are significantly (p<0.05) fluctuating between embryonic day 19 and 10 days post-birth. As the heart matures, cardiomyocytes progressively exit cell cycle with day 5 as a pivotal point. Hypertrophy entails cardiomyocyte binucleation which may be promoted by Protein Regulator of Cytokinesis (Prc1) and its interactors. Temporal cardiac transcription expression analysis provides insight into underlining effectors within the cardiac perinatal transitional program as well as cardiac pathology.
170

Technology transfer in transitional economies : the case of Mexico

Holguin-Pando, Nora Cristina 22 September 2010
Knowledge creation processes and the innovation systems through which it is transferred for the benefit of society are the economic driver of industrial economies in the globalized era, yet developing countries seeking to move through the transition from developing to developed status are struggling . A variety of theories and a range of speculations have been offered as to why some nations are more innovative than others, however little of this literature examines the theoretical and practical applicability of innovation models based on industrial societies for developing nations. This thesis examines a selection of theoretical innovation system models, analyzes their roots and assesses their applicability to transition economies where various pieces of the system present structural differences relative to developed nations. This thesis uses Mexico as a case study.<p> In the fifteen years since the 1994-95 collapse of Mexicos financial sector and the resulting economic crisis, the Mexican economy has made impressive progress towards macro-economic consolidation and stability. The OECD (2004) observes that the inflation rate has fallen from around 50% during the economic collapse of 1995 to about 4% in 2006. GDP growth has averaged 3.2% in the period from 1994 to 2008 (compared to the OECD average of 2.7%). As a partner in the North American Free Trade Agreement, trade liberalization has allowed Mexico to consolidate its export base and to specialize in medium- and high-technology manufacturing. However, the industrial sector in Mexico still shows a slow pace in developing, adopting and investing in technology. The Mexican industrial sector is lead by multinational firms that have located in Mexico due to the cheap costs of labour, while most of the research and development performed by these firms takes place outside of Mexico. Mexicos policy for S&T seems to show a disconnect between the discourse and practice.<p> Indicators show that Mexico considerably lags in S&T development. S&T development has not contributed to facilitating the country's positioning as one of the top ten most competitive nations in the world. Rather, technology transfer outcomes in the country, relative to other transitional economies, manifest an increasing deceleration in Mexico's S&T competitiveness. This thesis contrasts the innovation system in which technology transfer processes navigate in Mexico to the leading literature on theoretical models of innovation. This process facilitates identifying crucial barriers and challenges of the Mexican system of innovation that need to be addressed in order to achieve a level of S&T development that would contribute to facilitating Mexico's transition to a developed economy.

Page generated in 0.1331 seconds