Browsing by Issue Date, starting with "2021-03-02"
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- Late-time evolution of the Universe within a two-scalar-field cosmological modelPublication . Sá, PauloWe investigate the late-time evolution of the Universe within a cosmological model in which dark matter and dark energy are identified with two interacting scalar fields. Using methods of qualitative analysis of dynamical systems, we identify all cosmological solutions of this model. We show that viable solutions -- in the sense that they correspond to a cosmic evolution in which a long enough matter-dominated era is followed by a current era of accelerated expansion -- can be found in several regions of the parameter space. These solutions can be divided into two categories, namely, solutions that evolve to a state of everlasting accelerated expansion, in which the energy density of the dark-matter field rapidly approaches zero and the evolution becomes entirely dominated by the dark-energy field, and solutions in which the stage of accelerated expansion is temporary and the ratio between the energy densities of dark energy and dark matter tends, asymptotically, to a constant nonzero value.
- Plano de negócios para a ampliação de uma unidade hoteleiraPublication . Cosa, Alexandra Dina; Rebelo, SandraO presente projeto de Mestrado apresenta um plano de negócios para a ampliação da capacidade hoteleira da unidade de alojamento “Uma Casa à Beira Sol”, de modo a permitir à empresa uma tomada de decisão de investimento coerente e devidamente fundamentada. Para tal, efetuou-se o enquadramento da temática no que respeita à caracterização do setor hoteleiro em Portugal, bem como uma reflexão teórica sobre a análise de investimentos, no que respeita a sua conceptualização, tipologia, princípios base, metodologia e indicadores financeiros. Inerente ao plano de negócios, é efetuada uma caracterização da empresa promotora do projeto de investimento, que revela uma empresa hoteleira sediada no Algarve, em fase de maturidade, com perspetivas de crescimento ao nível da sua dimensão e produtividade. O plano de investimento, estruturado a partir das análises aos ambientes internos e externos, contempla os pressupostos económicos e financeiros inerentes ao projeto, uma projeção dos investimentos, financiamento, rendimentos e gastos, agrupada em demonstrações financeiras, e a apresentação e análise de indicadores de viabilidade económica e financeira. A análise realizada sugere a viabilidade económica e financeira do projeto de ampliação da empresa “Uma Casa à Beira Sol”.
- Time allocation between paid and unpaid work among men and women: an empirical study of Indian villagesPublication . Reddy, A. Amarender; Mittal, Surabhi; Singha Roy, Namrata; Kanjilal-Bhaduri, SanghamitraThe paper examines the time allocation between paid work (wage earning or self-employed work generally termed as employment work) and unpaid (domestic chores/care work generally termed as non-employment work) along with wage rates, imputed earnings, and occupational structure among men and women and according to different social groups to establish the extent to which the rural labour market is discriminated by sex and social group. The major objective of the paper is to show the differential in wage income between men and women in farm and non-farm activities. The paper also shows the division of time between employment and non-employment activities by men and women. The paper uses high-frequency data and applies econometric techniques to know the factors behind time allocation among different activities across gender. The study finds that males spend more hours on employment work and work at a higher wage rate than females. As a result, a vast monetary income gap between men and women is observed, even though women worked more hours if employment and non-employment activities are jointly taken into consideration. Time spent on employment work and non-employment (mainly domestic chores) has been found to vary significantly due to social identity, household wealth, land, income, education, and skill. The segregation of labour market by sex was evident in this study, with men shifting to non-farm occupations with greater monetary returns and continued dependence on women’s farm activities. Enhancing the ownership of land and other assets, encouraging women’s participation particularly among minorities, and improving health are some of the policy recommendations directed from this study to enhance participation in employment work and shifting towards higher wage income employment.