1,017 research outputs found
Going micro: Analysing SAM multipliers for the dairy chain on Reunion Island
No full textThis poster presents a study on the multiplier effects in the dairy chain on Reunion Island. This Indian Ocean island is one of the French overseas departments. However, it struggles with similar problems as the developing areas in its neighbourhood, high levels of unemployment especially being a major concern. The agricultural sector justifies the state support it receives by stressing its role in the creation of employment and economic activity. Our focus is on the dairy sector of the Island, which is relatively recent and highly organized. Local milk production has increased over the years and our aim is to calculate the economywide impact of this trend. We use a social accounting matrix with disaggregated accounts for the dairy sector to calculate the impact of changes in this sector.Dairy, SAM, La Reunion, Livestock Production/Industries,
A new climatology for Southern Hemisphere blockings in the winter and the combined effect of ENSO and SAM phases
No full textThis study presents 53-year climatology of Southern Hemisphere (SH) blockings in the winter using\ud
daily 500-hPa geopotential height data from NCEP–NCAR reanalysis. The variability of SH blocking events and their\ud
relationships with combined phases of El Ni˜no/southern oscillation (ENSO) and the southern annular mode (SAM) are\ud
examined. Conventional indices were revised and a slightly modified index is proposed to detect latitudinal variations of\ud
SH blockings. The South Pacific region is examined in detail. There is no statistically significant long-term trend in the SH\ud
blockings. During moderate El Ni˜no, the preferred location SH blocking is observed over East Pacific, and we show that\ud
the blocking frequency increases during negative SAM phases. During moderate La Ni˜na the SH blockings are significantly\ud
suppressed over Central Pacific, with lower blocking frequency during positive SAM phases. These results indicate that\ud
the daily variability of SH blocking is strongly modulated by both ENSO and SAM phases.NOAA/OAR/ESRL PSD, Boulder, Colorado, USACAPESCNPqNOAA Office of Global Programs (NA10OAR4310170)FAPESP - 08/58101-9INCTMC/CNP
Validation of simulated real world TCP stacks
No full textThe TCP models in ns-2 have been validated and are widely used in network research. They are however not aimed at producing results consistent with a TCP implementation, they are rather designed to be a general model for TCP congestion control. The Network Simulation Cradle makes real world TCP implementations available to ns-2: Linux, FreeBSD and OpenBSD can all be simulated as easily as using the original simplified models. These simulated TCP implementations can be validated by directly comparing packet traces from simulations to traces measured from a real network. We describe the Network Simulation Cradle, present packet trace comparison results showing the high degree of accuracy possible when simulating with real TCP implementations and briefly show how this is reflected in a simulation study of TCP throughput
Combining temporal aspects of dynamic networks with Node2Vec for a more efficient dynamic link prediction
No full textIn many real-life applications it is crucial to be able to, given a collection of link states of a network in a certain time period, accurately predict the link state of the network at a future time. This is known as dynamic link prediction, which compared to its static counterpart is more complex, as capturing the temporal characteristics is a non-trivial task. This explains while still majority of today's research in network representation learning focuses on static setting ignoring temporal information. In this work, we focus on one such case and aim at extending node2vec, representation learning method successfully applied for static link prediction, to a dynamic setup. This extended method is applied and validated on several real-life networks with different properties. Results show that taking into account dynamic aspect outperforms static approach. Additionally, based on the network properties, recommendations are given for the node2vec parameters.</p
Custeio e precificação no ciclo de vida das empresas
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.O aumento da competitividade nos mercados tem ocasionado mudanças na gestão das empresas, que determinam a necessidade de melhora nos produtos através de custos mais baixos, processos mais velozes e com maior qualidade. Como consequência, forçam as empresas a controlar os custos, diminuindo as perdas e desperdícios, com conhecimento mais preciso dos custos realmente embutidos em cada produto. Assim, torna-se importante a aplicação de sistemas de custeio que proporcionem melhor compreensão dos custos dos produtos, suas perdas e desperdícios; e ainda métodos de precificação que reflitam as necessidades sentidas no mercado. Nesta dissertação demonstra-se, durante as diversas fases do ciclo de vida das empresas, como são utilizados os diversos sistemas de custeio e precificação como fatores chave de sucesso. Um estudo de múltiplos casos em cinco empresas é apresentado, confirmando como o domínio dos processos de custeio e precificação e a oportunidade de seu uso é condizente com a estrutura interna dessas organizações e determinante para a estratégia dos negócios
Gender, Time Use, and Labor Income in Guinea: Micro and Macro Analyses
No full textHigher incomes for women can have significant beneficial impacts for poverty reduction both in the short run by providing more resources to households and in the long run by increasing investments in the human capital of children. Substantial research has been done using microeconomic household survey data on gender disparities in labor incomes in developing countries in recent years. The first contribution of this paper is to summarize some of that research as applied to Guinea. However, microeconomic studies may not necessarily provide insights on how broad structural shifts in an economy could affect differently opportunities for work and income generation for men and women. In the second part of the paper, we use a recent Social Accounting Matrix (SAM) for Guinea to assess how growth in various sectors of the economy could affect the incomes of women and men both directly and indirectly through multiplier effects. We find that an expansion of sectors oriented primarily towards domestic consumption could have a larger positive impact on the labor income share of women than an expansion of export-oriented sectors.Gender; Labor income; Social Accounting Matrix; Guinea
BIM Module for Deep Learning-driven parametric IFC reconstruction
No full textThe creation of Building Information Models (BIM) is driven by cutting-edge software applications, plug-ins, and APIs that constitute the backbone of BIM authoring tools. While free tools and APIs offer visualization and customization options, geometric modelling remains largely restricted to interactive work and proprietary platforms, which sometimes limits flexibility and efficiency. There are still only a few comprehensive workflows that fully automate the reconstruction of building elements from reality-based surveyed data. This paper introduces an innovative reconstruction pipeline developed for the Scan-to-BIM Challenge at the CVPR 2024 Workshop, where it achieved second place in the competition. A deep learning (DL)-driven BIM Module for parametric IFC reconstruction is designed to accurately reconstruct both primary and secondary building elements within a BIM framework, starting from unstructured point cloud data captured via Terrestrial Laser Scanning (TLS). By leveraging DL techniques, particularly Convolutional Neural Networks (CNNs) and Transformers Networks (PTv3), our approach uses late fusion instance segmentation across both 2D and 3D modalities to accurately identify and reconstruct class-specific elements. The pipeline ultimately generates Industry Foundation Classes (IFC) elements, enhancing modelling accuracy, parameter estimation, and consistency in subsequent stages. Results highlight the pipeline’s strong performance on various datasets, underscoring the crucial role of DL in advancing Scan-to-BIM workflows
Vulnerability to winter mortality in elderly people in Britain: population based study.
No full textOBJECTIVE: To examine the determinants of vulnerability to winter mortality in elderly British people. DESIGN: Population based cohort study (119,389 person years of follow up). SETTING: 106 general practices from the Medical Research Council trial of assessment and management of older people in Britain. PARTICIPANTS: People aged > or = 75 years. MAIN OUTCOME MEASURES: Mortality (10,123 deaths) determined by follow up through the Office for National Statistics. RESULTS: Month to month variation accounted for 17% of annual all cause mortality, but only 7.8% after adjustment for temperature. The overall winter:non-winter rate ratio was 1.31 (95% confidence interval 1.26 to 1.36). There was little evidence that this ratio varied by geographical region, age, or any of the personal, socioeconomic, or clinical factors examined, with two exceptions: after adjustment for all major covariates the winter:non-winter ratio in women compared with men was 1.11 (1.00 to 1.23), and those with a self reported history of respiratory illness had a winter:non-winter ratio of 1.20 (1.08 to 1.34) times that of people without a history of respiratory illness. There was no evidence that socioeconomic deprivation or self reported financial worries were predictive of winter death. CONCLUSION: Except for female sex and pre-existing respiratory illness, there was little evidence for vulnerability to winter death associated with factors thought to lead to vulnerability. The lack of socioeconomic gradient suggests that policies aimed at relief of fuel poverty may need to be supplemented by additional measures to tackle the burden of excess winter deaths in elderly people
Sensores modificados com monocamadas auto-organizadas de tióis para determinação de dopamina, tiodicarbe e catequina
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011Foi construído um biossensor para dopamina a partir da modificação de um eletrodo de ouro com SAM de L-cisteína, sobre a qual foi imobilizada peroxidase obtida de brotos de feijão (Vigna radiata). O biossensor apresentou resposta linear para dopamina de 9,91x10-6 a 2,21x10-4 mol L-1 com limite de detecção de 4,78x10-7 mol L-1. Os resultados obtidos na determinação de dopamina em fármacos com este sensor estão de acordo com aqueles obtidos com o método espectrofotométrico em um nível de 95% de confiança. Um segundo biossensor construído a base de SAM de L-cisteína e peroxidase de broto de alfafa (Medicago sativa) foi empregado para determinação de tiodicarbe em amostras de batatas, maçãs e morangos. Usando este sensor, a curva analítica foi linear para tiodicarbe nas concentrações entre 2,27x10-6 e 4,40x10-5 mol L-1 com limite de detecção de 5,75x10-7 mol L-1. Os resultados do método proposto estão de acordo em um nível de 95% de confiança com os resultados do procedimento de cromatografia líquida de alta eficiência. Foi também desenvolvido um sensor para determinação de catequina em chá verde, no qual um complexo de níquel (II) foi imobilizado sobre SAM de ácido 3-mercaptopropiônico na superfície do eletrodo de ouro. Este eletrodo modificado apresentou uma resposta linear para catequina no intervalo de 3,31x10-6 a 2,53x10-5 mol L-1 com limite de detecção de 8,26x10-7 mol L-1. A determinação de catequina em chá verde utilizando o sensor proposto está de acordo com o método de eletroforese capilar em um nível de confiança de 95%
Gender trouble: The World Health Organization, the International Statistical Classification of Diseases and Related Health Problems (ICD)-11 and the trans kids
No full text© CSIRO 2017. The World Health Organization (WHO) is revising its diagnostic manual, the International Statistical Classification of Diseases and Related Health Problems (ICD). At the time of writing, and based on recommendations from its ICD Working Group on Sexual Disorders and Sexual Health, WHO is proposing a new ICD chapter titled Conditions Related to Sexual Health, and that the gender incongruence diagnoses (replacements for the gender identity disorder diagnoses used in ICD-10) should be placed in that chapter. WHO is proposing that there should be a Gender incongruence of childhood (GIC) diagnosis for children below the age of puberty. This last proposal has come under fire. Trans community groups, as well as many healthcare professionals and others working for transgender health and wellbeing, have criticised the proposal on the grounds that the pathologisation of gender diversity at such a young age is inappropriate, unnecessary, harmful and inconsistent with WHO's approach in regard to other aspects of development in childhood and youth. Counter proposals have been offered that do not pathologise gender diversity and instead make use of Z codes to frame and document any contacts that young gender diverse children may have with health services. The author draws on his involvement in the ICD revision process, both as a member of the aforementioned WHO Working Group and as one of its critics, to put the case against the GIC proposal, and to recommend an alternative approach for ICD in addressing the needs of gender diverse children
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