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Estimativa da capacidade de carga à tração de estacas helicoidais com base no ensaio SPT; Semi-empirical estimation of the uplift capacity of helical piles based on SPT results

Silva, Bruno Canoza da
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 07/07/2014 Português
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Na prática brasileira, usualmente a previsão da capacidade de carga de fundações por estacas é baseada em métodos semi-empíricos, por meio de correlações diretas da resistência de ponta e por atrito lateral ao longo da estaca com os valores de NSPT. Entretanto, no caso de fundações por estacas helicoidais, ainda utilizam-se métodos teóricos que necessitam de valores de parâmetros geotécnicos obtidos indiretamente a partir de correlações com os valores de NSPT (coesão, peso específico, ângulo de atrito, coeficiente de empuxo). Portanto, nesta dissertação foi desenvolvido um método semi-empírico para estimar a capacidade de carga à tração de fundações por estacas helicoidais profundas por meio de correlações diretas com o valor de NSPT do solo de instalação da estaca. Além disso, são apresentados no presente trabalho valores de fator de torque KT, obtidos por análise estatística, para a verificação da capacidade de carga à tração da estaca usando-se medidas do torque necessário para instalá-la no terreno. Nesta pesquisa dois diferentes modelos para estimativa da capacidade de carga foram desenvolvidos e analisados estatisticamente. O estudo das características das amostras de fundações por estacas helicoidais usadas nesta pesquisa permitiu a subdivisão em grupos (tipo de solo e quantidade de hélices) de modo a se obter modelos mais precisos. Com os resultados deste trabalho...

Does absorptive capacity affect project performance? A study based on project management practices, organization learning, and knowledge

Dultra-de-Lima, Ronaldo Gomes
Fonte: Fundação Getúlio Vargas Publicador: Fundação Getúlio Vargas
Tipo: Tese de Doutorado
Português
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The literature has emphasized that absorptive capacity (AC) leads to performance, but in projects its influences still unclear. Additionally, the project success is not well understood by the literature, and AC can be an important mechanism to explain it. Therefore, the purpose of this study is to investigate the effect of absorptive capacity on project performance in the construction industry of São Paulo State. We study this influence through potential and realized absorptive capacity proposed by Zahra and George (2002). For achieving this goal, we use a combination of qualitative and quantitative research. The qualitative research is based on 15 interviews with project managers in different sectors to understand the main constructs and support the next quantitative phase. The content analysis was the technique used to analyze those interviews. In quantitative phase through a survey questionnaire, we collected 157 responses in the construction sector with project managers. The confirmatory factor analysis and hierarchical linear regression were the techniques used to assess the data. Our findings suggest that the realized absorptive capacity has a positive influence on performance, but potential absorptive capacity and the interactions effect have no influence on performance. Moreover...

Conceptions of decision-making capacity in psychiatry: interviews with Swedish psychiatrists

Sjöstrand, Manne; Karlsson, Petter; Sandman, Lars; Helgesson, Gert; Eriksson, Stefan; Juth, Niklas
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
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Background: Decision-making capacity is a key concept in contemporary healthcare ethics. Previous research has mainly focused on philosophical, conceptual issues or on evaluation of different tools for assessing patients’ capacity. The aim of the present study is to investigate how the concept and its normative role are understood in Swedish psychiatric care. Of special interest for present purposes are the relationships between decisional capacity and psychiatric disorders and between health law and practical ethics. Methods: Eight in-depth interviews were conducted with Swedish psychiatrists. The interviews were analysed according to descriptive qualitative content analysis in which categories and sub-categories were distilled from the material. Results: Decision-making capacity was seen as dependent on understanding, insight, evaluation, reasoning, and abilities related to making and communicating a choice. However, also the actual content of the decision was held as relevant. There was an ambivalence regarding the relationship between psychiatric disorders and capacity and a tendency to regard psychiatric patients who made unwise treatment decisions as decisionally incapable. However, in cases relating to patients with somatic illnesses...

Approaches and impact of non-academic research capacity strengthening training models in sub-Saharan Africa: a systematic review

Mugabo, Lambert; Rouleau, Dominique; Odhiambo, Jackline; Nisingizwe, Marie Paul; Amoroso, Cheryl; Barebwanuwe, Peter; Warugaba, Christine; Habumugisha, Lameck; Hedt-Gauthier, Bethany L.
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
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Background: Research is essential to identify and prioritize health needs and to develop appropriate strategies to improve health outcomes. In the last decade, non-academic research capacity strengthening trainings in sub-Saharan Africa, coupled with developing research infrastructure and the provision of individual mentorship support, has been used to build health worker skills. The objectives of this review are to describe different training approaches to research capacity strengthening in sub-Saharan Africa outside academic programs, assess methods used to evaluate research capacity strengthening activities, and learn about the challenges facing research capacity strengthening and the strategies/innovations required to overcome them. Methodology The PubMed database was searched using nine search terms and articles were included if 1) they explicitly described research capacity strengthening training activities, including information on program duration, target audience, immediate program outputs and outcomes; 2) all or part of the training program took place in sub-Saharan African countries; 3) the training activities were not a formal academic program; 4) papers were published between 2000 and 2013; and 5) both abstract and full paper were available in English. Results: The search resulted in 495 articles...

Optimal Capacity Adjustments for Supply Chain Control

Budiman, Benny
Fonte: MIT - Massachusetts Institute of Technology Publicador: MIT - Massachusetts Institute of Technology
Tipo: Artigo de Revista Científica Formato: 366794 bytes; application/pdf
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Decisions on capacity are often treated separately from those of production and inventory. In most situations, capacity issues are longer-term, so capacity-related decisions are considered strategic and thus not part of supply planning. This research focuses on optimal supply planning with emphasis on variable capacity to meet uncertain demand. It also defines three levels of capacity change: operating hours, labor availability and production hardware availability. The work presented here deals with the fundamental decisions to determine capacity, production, and inventory to meet customer demand while optimizing revenue and costs over a planning horizon (typically the life of the product). With the Lagrangian technique for constrained optimization, it can be shown that the optimal supply capacity has upper and lower bounds. The optimal feedback policy prescribes increasing the supply capacity when at the beginning of the planning interval it is below the lower bound. Similarly, the supply capacity should be decreased to the upper bound when it is above the upper bound. This paper will present arguments for characterizing forecast evolution and information sharing in the supply chain to obtain a predictor-corrector approach to supply chain control.; Singapore-MIT Alliance (SMA)

Understanding the impact of technical debt on the capacity and velocity of teams and organizations: viewing team and organization capacity as a portfolio of real options

Power, Ken
Fonte: IEEE Computer Society Publicador: IEEE Computer Society
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
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peer-reviewed; Understanding the impact of technical debt is critical to understanding a team’s velocity. For organizations with multiple teams and products, the impact of technical debt combines non-linearly to impact the organization’s velocity. We can think of the capacity of a team as a portfolio. Not all of that capacity can be invested in new features or defect fixing, without incurring negative consequences. A portion of the team’s capacity needs to be invested in the ongoing management and reduction of technical debt. This paper describes a simple technique for visualizing, quantifying and tracking a team’s technical debt as a portion of their overall capacity investment. The knowledge and insights gained through this technique help with better capacity planning, improved forecasting, and helps to justify the business case for investing in managing and reducing technical debt.

Linking Individual, Organizational, and Institutional Capacity Building to Results

Vinod, Thomas
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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Achieving rapid development calls for improved capacity in the public and private sectors to support development policies and projects. The World Bank recognizes that capacity building is a long-term process requiring a systemic approach. That is why many Bank projects in Africa and elsewhere include capacity development activities. But three drawbacks have limited the effectiveness of these efforts: many operations do not -- but need to -- take an integrated view of solutions involving the individual, organizational, and institutional contexts; individual, organizational, and institutional links vary greatly across sectors -- not addressing these differences has led to less effective capacity building; and capacity goals as they relate to this understanding of the individual, organizational, and institutional aspects have not been explicit. This Capacity Brief discusses and illustrates the importance of integrating capacity-building efforts at all three levels, and addressing differences among sectors in their integration...

Capacity Assessment of the Ministry of Health of the Republic of Angola

Blasques de Oliveira, João Carlos
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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The World Bank commissioned a capacity assessment study of the Ministry of Health (MOH) that was undertaken in March 2006. The terms of reference covered the following areas: Identify the existing analytical work being done by other donors in the health field and summarize their terms of reference and main conclusions; assess the MOH capacity to implement health policies and strategies adopted by the government; assess the MOH capacity to implement projects financed by the Bank, the Global fund, EU and others focusing the analysis on the MOH capacity for policy formulation, mobilization of funds, and program implementation; assess the capacity at central, provincial and municipal level in (i) program management, (ii) service delivery, including the number and distribution of staff; analyze the decision making process and the incentives for decision making including how much the system is centralized or decentralized; analyze the existing stock of health professionals including the MOH and military, identifying key constraints and gaps in capacity...

Capacity Constraints and Public Financial Management in Small Pacific Island Countries

Haque, Tobias A.; Knight, David S.; Jayasuriya, Dinuk S.
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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Drawing on Public Expenditure and Financial Accountability assessment scores from 118 countries, this paper provides the first comparative analysis of public financial management performance in small Pacific Island Countries (PICs). It applies a Tobit regression model across the full cross-country sample of Public Expenditure and Financial Accountability scores and country variables to identify potential causes for the observed underperformance of Pacific Island countries relative to other countries of similar income. First, the analysis finds small population size to be negatively correlated with Public Expenditure and Financial Accountability scores, with the "population penalty" faced by small Pacific Island countries sufficient to explain observed underperformance. Second, through application of a new capacity index of Public Expenditure and Financial Accountability dimensions, it finds strong evidence in support of the hypothesis that small population size impacts scores through the imposition of capacity constraints: with a limited pool of human capital...

PFM Design under Capacity Constraints : Planning Public Financial Management Reforms in Pacific Island Countries

World Bank; International Monetary Fund
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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This note is intended to inform Public Financial Management (PFM) reform in small Pacific Island Countries (PICs). PFM systems in PIC contexts are often very different from the sophisticated and comprehensive systems operating in larger, wealthier countries. The authors give two key messages. Firstly, PFM capacity should be prioritized to areas that matter most in achieving development outcomes, and reforms should be intended to address specific, identified, problems, rather than to achieve blueprint good practice standards. Secondly, with small numbers of staff and high staff turnover limiting potential for sustainable gains from standard capacity building solutions (such as training programs and workshops), broader options for meeting capacity gaps should be considered, including accessing ongoing support for specialized tasks or even the wholesale outsourcing of certain functions. The three main sections of this note are as follows: (i) how to plan PFM reforms, including through the development of PFM roadmaps; (ii) how to prioritize limited PFM reform capacity to address the most pressing constraints to development; and (iii) how to access additional capacity to implement and sustain required PFM reforms.

Capacity development in the international development context: implications for Indigenous Australia

Hunt, J
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Working/Technical Paper Formato: 2537398 bytes; 355 bytes; application/pdf; application/octet-stream
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Capacity development has become a key concept in international development in recent years. Older approaches involving technical cooperation, in which knowledge and skills were to be transferred to developing countries, have been unsuccessful. In contrast capacity development is viewed as an endogenous process within organisations and communities which are themselves embedded in wider systems. Understanding the features of these systems which might support rather than inhibit capacity development is therefore important. The paper first clarifies aspects of the term ‘capacity development’ and then draws on recent research and experience of capacity development to draw out some of the key international lessons, especially in relation to the ‘enabling environment’. It then outlines a number of community and organisational approaches to capacity development, but cautions that cross-cultural issues may affect capacity development at different levels. The paper concludes by raising questions about the implications of this international development experience for thinking about capacity development in Indigenous Australia. It particularly argues for a greater focus on removing the constraints in the enabling environment in order to better foster Indigenous capacity.; no

Effect of soil variability on the bearing capacity of footings on multi-layered soil.

Kuo, Yien Lik
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2009 Português
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Footings are often founded on multi-layered soil profiles. Real soil profiles are often multi-layered with material constantly varying with depth, which affects the footing response significantly. Furthermore, the properties of the soil are known to vary with location. The spatial variability of soil can be described by random field theory and geostatistics. The research presented in this thesis focuses on quantifying the effect of soil variability on the bearing capacity of rough strip footings on single and two layered, purely-cohesive, spatially variable soil profiles. This has been achieved by using Monte Carlo analysis, where the rough strip footings are founded on simulated soil profiles are analysed using finite element limit analysis. The simulations of virtual soil profiles are carried out using Local Average Subdivision (LAS), a numerical model based on the random field theory. An extensive parametric study has been carried out and the results of the analyses are presented as normalized means and coefficients of variation of bearing capacity factor, and comparisons between different cases are presented. The results indicate that, in general, the mean of the bearing capacity reduces as soil variability increases and the worst case scenario occurs when the correlation length is in the range of 0.5 to 1.0 times the footing width. The problem of estimating the bearing capacity of shallow strip footings founded on multi-layered soil profiles is very complex...

The ebbs and flows of changing acute bed capacity delays

Zeitz, K.; Carter, L.; Robinson, C.
Fonte: Australian Healthcare Association Publicador: Australian Healthcare Association
Tipo: Artigo de Revista Científica
Publicado em //2013 Português
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OBJECTIVE: This case study provides a summary of changes in acute hospital bed delays that have occurred over a 4-year period as identified through a Capacity Audit process. BACKGROUND: Royal Adelaide Hospital (RAH) designed a Capacity Audit process and tool that provides a systematic method to evaluate factors limiting access to inpatient bed capacity. The aim of the audit is to improve understanding of bed capacity by identifying key causes of delay for hospital inpatients and quantify the most frequent causes of blocked bed capacity. This can then be used to underpin targeted improvement work. The Capacity Audit has been undertaken at the RAH over three cycles. METHOD: The Capacity Audit involves a survey of every open and staffed bed, identifying how the bed is being used: for acute care or treatment, if there was a delay to the patient for discharge, or if the bed was unavailable. The first and second cycle of the audit (2007-2008) involved a twice-daily survey over a 2-week period and the third audit cycle in 2010 occurred once daily for 1 week. RESULTS: On average, 620 beds were surveyed daily with an audit compliance rate ranging from 85-97%. This process has revealed almost 75% of beds are used positively for care. Of the remaining 25% of hidden capacity identified...

Five Key Messages : Recommendations for Capacity Development in Africa; Cing meseages cles: recommandations pour le developpment des capacities en Afrique

Madavo, Callisto
Fonte: Washington, DC Publicador: Washington, DC
Tipo: Publications & Research :: Brief; Publications & Research
Português
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A Task Force was set up to recommend changes in the way the Bank affects African capacity, both directly through operations aimed at capacity development, and indirectly through the way it conducts its overall business of development lending and cooperation in Africa. Key messages are emerging, which can inform and stimulate the efforts of all parties in capacity development on the continent-African countries, external partners, and the Bank. The Task Force regards these as a work in progress around which further discussion and reflection are on-going. The five key messages are: 1) capacity is the missing link in Africa's achievement of the Millennium Development Goals (MDGs); 2) capacity development aims at an effective state, and an engaged society; 3) Africans must take the lead in capacity development and aid management; 4) external partners must engage existing capacity in all African countries; and, 5) achieving capacity outcomes requires independent monitoring. A renewed compact will require the commitment of African leaders and their development partners...

Improving Nutrition : Issues in Management and Capacity Development

Heaver, Richard
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Publications & Research :: Working Paper; Publications & Research
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The World Bank has not yet defined the main issues in management and capacity development in nutrition, nor has it developed methodologies for governments and project staff to identify and deal with these issues and systematically improve capacity. This issues paper is intended as a starting-point for developing the Bank's professional capacity in nutrition management and capacity development. It discusses a dozen sets of issues related to the design and implementation of community nutrition programs: community empowerment and decentralization; staffing and job design; supervision, training and referral; program monitoring and evaluation; sectoral capacity analysis and strategy development; building understanding, commitment and behavioral change; managing the nutrition sector; managing nutrition program support organizations; tools for institutional analysis and capacity development; building technical assistance capacity; improving donor cooperation; and improving coordination across sectors. As a follow-up...

Building Monitoring and Evaluation Capacity in Young Systems : The Experiences of Rwanda, Vietnam, and Yemen

Hwang, Helena
Fonte: World Bank Group, Washington, DC Publicador: World Bank Group, Washington, DC
Tipo: Publications & Research :: Working Paper; Publications & Research
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This study is funded by the Governance Partnership Facility to better understand country experiences with building monitoring and evaluation (M&E) capacity to identify paths to success and obstacles to reform. For every country, whether recently emerging from conflict, low-income, or Organization for Economic Cooperation and Development (OECD), M&E is critical to evidence-based policymaking, budget decisions, management, and accountability, all elements of good governance. Building M&E capacity in fragile and conflict-affected states is not a well-documented topic, although analysts generally agree that even in these challenging contexts, countries can set up monitoring capabilities, albeit with heavy donor support. This study aims to strengthen the knowledge base by synthesizing and comparing the experiences of Rwanda, Vietnam, and Yemen in building capacity for their recently established M&E systems. The study also draws comparisons with Mexico's more well-developed M&E system. This paper is directed to policymakers...

Capacity Building in Africa : An OED Evaluation of World Bank Support; L'appui de la Banque mondiale au renforcement des capacites en Afrique : une evaluation par l'OED

Operations Evaluation Department
Fonte: Washington, DC: World Bank Publicador: Washington, DC: World Bank
Tipo: Publications & Research :: Publication; Publications & Research :: Publication
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This evaluation assesses the relevance and effectiveness of Bank support for public sector capacity building in Africa, over the past 10 years. It draws on studies of Benin, Ethiopia, Ghana, Malawi, Mali, and Mozambique; aggregate assessments of country strategies and operations across the Bank's Africa Region; and, reviews of three corporate and Regional programs dedicated to capacity building-the World Bank Institute, the Institutional Development Fund, and the Bank-supported African Capacity Building Foundation. Main findings suggest recent changes in approach have made Bank support more relevant; most capacity support remains fragmented; sector-specific capacity building approaches need strengthening; tools and instruments could be more effectively and fully utilized; and, quality assurance is inadequate. These findings underscore the importance of approaching capacity building in Africa as a core objective, and ensuring that Bank capacity building support is country-owned, results oriented, and evidence-based. The evaluation recommends that: the Bank strengthen its knowledge base...

A study of predicitive capacity and working memory in mild Alzheimer's disease and normal controls using saccadic eye movements

Ruthirakuhan, MYURI
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
Português
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Alzheimer’s disease (AD) is a neurodegenerative disorder with no existing cure. Since cognitive control influences saccade behaviour, saccades provide a valuable tool when studying cognitive changes in healthy and pathological aging. This thesis aims to evaluate differences in predictive capacity and working memory between cognitively normal older adults (NC) and mild AD patients using customized saccade paradigms and a battery of neuropsychological tests. In the predictive paradigm, we hypothesize that AD participants would display a decreased level of prediction, predictive capacity and learning capacity. In the memory-guided paradigm, we hypothesize that AD participants would have a decreased ability to maintain fixation and capacity to retain information and reproduce it correctly. Overall, we found that in the predictive paradigm, NC displayed a greater degree of prediction than AD participants. However, both groups had an optimal level of prediction at intermediate inter-stimulus intervals (ISI) (750 and 1000 ms). As ISI increased, both groups, although more so in AD, elicited a greater proportion of SRTs below -200 ms and -400 ms. This may suggest that as ISI increased, participants switched from a predictive to an anticipatory/guessing strategy. At an ISI of 500 ms...

Capacidade aerobia de futebolistas profissionais de altitude durante o periodo competitivo da cidade de Arequipa-Peru; Capacity aerobic of professional futebolistas of altitude during the competitlve periodo of the arequipa-perú city

Alejandro Inostroza Aeloiza
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 16/07/2004 Português
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O objetivo do presente estudo foi de descrever e analisar a capacidade aeróbia de futebolistas profissionais de altitude durante o período competitivo, onde a seleção da amostra foi de tipo não-probabilístico 27 jogadores, para tal efeito, foram mensuradas as variáveis de massa corporal, estatura, quatro dobras cutâneas (triciptal, subescapular, supra- Ilíaca, e panturrilha), e para a capacidade aeróbia progressiva foi utilizado o teste físico de (corrida de ida e volta de 20m) de Navetta, para o teste Recovery o yo-yo teste de Bangsbo (lI nível) y para a capacidade de recuperação o yoyo teste de Bangsbo (II Nível). Por outro lado, utilizou-se a estatística descritiva de media e desvio padrão para caracterizar ao grupo, e para analisar as diferencias significativas entre a posição de jogo empregou-se ANOVA (one way). Finalmente, os resultados, mostram que quanto à capacidade aeróbia do 'VO IND. 2max' os volantes apresentam maior 'VO IND. 2max' quando comparados com outras posições de jogo e os goleiros apresentam menor quantidade de 'VO IND. 2ma', assim também, na capacidade de intermitente os laterais e volantes mostram maior percorrido em relação às outras posições de jogo e os goleiros são os que apresentaram menor percorrido e...

Neuronal Survival of the Fittest: The Importance of Aerobic Capacity in Exercise-Induced Neurogenesis and Cognition

Tognoni, Christina Maria
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Dissertação
Publicado em //2014 Português
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It is commonly accepted that aerobic exercise increases hippocampal neurogenesis, learning and memory, as well as stress resiliency. However, human populations are widely variable in their inherent aerobic fitness as well as their capacity to show increased aerobic fitness following a period of regimented exercise. It is unclear whether these inherent or acquired components of aerobic fitness play a role in neurocognition. To isolate the potential role of inherent aerobic fitness, we exploited a rat model of high (HCR) and low (LCR) inherent aerobic capacity for running. At a baseline, HCR rats have two- to three-fold higher aerobic capacity than LCR rats. We found that HCR rats also had two- to three- fold more young neurons in the hippocampus than LCR rats as well as rats from the heterogeneous founder population. We then asked whether this enhanced neurogenesis translates to enhanced hippocampal cognition, as is typically seen in exercise-trained animals. Compared to LCR rats, HCR rats performed with high accuracy on tasks designed to test neurogenesis-dependent pattern separation ability by examining investigatory behavior between very similar objects or locations. To investigate whether an aerobic response to exercise is required for exercise-induced changes in neurogenesis and cognition...