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Modelling the Impact of Stages of HIV Progression on Estimates  [PDF]
Angelina Mageni Lutambi
Advances in Infectious Diseases (AID) , 2015, DOI: 10.4236/aid.2015.53012
Abstract: HIV/AIDS is a public health problem especially in sub-Saharan Africa where majority of infections and deaths occur. Despite the large number of studies and efforts made in covering the data gap using mathematical models, little is known on how model estimates are confounded by the transmission variabilities that exist in stages of HIV progression. This work investigates the impact of including stages of HIV transmission in HIV/AIDS models. A deterministic HIV/AIDS model is developed and extended to include stages of HIV progression of infected individuals. Theoretical investigation of the models and numerical analyses indicate that the two models produce different estimates, with the model without stages producing lower estimates than the staged model. These results call for a careful consideration in evaluating the efficiency of HIV/AIDS models that are used to estimate and project the burden of HIV/AIDS disease.
Singularly perturbed Volterra integral equations with weakly singular kernels
Angelina Bijura
International Journal of Mathematics and Mathematical Sciences , 2002, DOI: 10.1155/s016117120201325x
Abstract: We consider finding asymptotic solutions of the singularly perturbed linear Volterra integral equations with weakly singular kernels. An interesting aspect of these problems is that the discontinuity of the kernel causes layer solutions to decay algebraically rather than exponentially within the initial (boundary) layer. To analyse this phenomenon, the paper demonstrates the similarity that these solutions have to a special function called the Mittag-Leffler function.
Fran?a: imigrantes, estrangeiros, estranhos
Peralva, Angelina;
Lua Nova: Revista de Cultura e Política , 1994, DOI: 10.1590/S0102-64451994000200005
Abstract: on the basis of the french case the nature and the consequences of the migratory movements in europe are examined in their broadest social dimension. the key to fighting racism is to be found in the social movements which combine a cultural reference with economic revindication.
Democracia e violência: a moderniza??o por baixo
Peralva, Angelina;
Lua Nova: Revista de Cultura e Política , 1997, DOI: 10.1590/S0102-64451997000200010
Abstract: contrarily to what one is lead to believe by its mytical reelabo-ration violence in rio is not primordially produced by poverty and exclusion. the lack of state services is much more important as a cause of violence during the eighties. moreover, some forms of youthfull violence are best understood as a kind of restricted modernization.
A modernidade europ??ia e sua crise
Peralva, Angelina;
Lua Nova: Revista de Cultura e Política , 1993, DOI: 10.1590/S0102-64451993000200007
Abstract: the dark side of the european unification is discussed. populism and violence, racism and xenophobia appear as a counterpart to an accelerated process of modernization that defies europe's capability for integration. the different ways of facing this problem in france and germany are examined.
Levantes urbanos na Fran?a
Peralva, Angelina;
Tempo Social , 2006, DOI: 10.1590/S0103-20702006000100005
Abstract: the wave of violence that struck france in november 2005 cannot be explained simply as a reflection of the crisis in its city suburbs. two other levels of analysis should also be included: firstly, the nation as a limit of democracy, which globalization and the figure of the foreign immigrant throw into question; and, secondly, the changes in political representation, caused by the crisis of an industrial society. more than a crisis in the city suburbs, france is today living through a crisis in the bases of democracy as a functioning institution.
The problems of establishing a professionally important qualities of the individual teacher
Angelina Nagovicina
Koncept : Scientific and Methodological e-magazine , 2013,
Abstract: It is well known that the system of education and training - the main source of the multiplication of intellectual potential of society. A key provision in this system is the teacher. The success of education and training depends on the personality of the teacher, his training, his creativity and general cultural training. The success of the work of the teacher is determined not only by the methods of education and training available in its arsenal, but mostly driven by his personality, character, skills, relationships with children, creative attitude.
Like a Caterpillar Losing its Cocoon: Rediscovery of Self in Marisa Labozzetta’s Thieves Never Steal in the Rain
Angelina Oberdan
Religions , 2013, DOI: 10.3390/rel4020283
Abstract: We ward off loss as best we can, but rarely are we so lucky. We attach significance to our rituals and collected items. This theme of warding off loss and searching for ways to cope with it is woven through the linked stories of Marisa Labozzetta’s Thieves Never Steal in the Rain, especially in the stories about Joanna and Barbara. Barbara’s ritualistic collecting links her directly to the past. Through these objects, the past and present become fluid for Barbara, and she believes that they can even affect her future. Because of this, she gathers objects in an attempt to preserve her luckiness as she has been since she was a child. This idea of actively working against or shielding oneself and loved ones from loss is also apparent in Labozetta’s stories that feature Joanna. Joanna’s daughter, Jill, died in a terrible accident, and Joanna blames herself because she thinks she should have been able to prevent Jill’s death. Joanna also emphasizes the importance of things in a way that is similar to Barbara’s. When she thinks she has lost her artistic eye, Joanna reclaims the things from her childhood desk. Unfortunately, and despite their best efforts, neither Joanna nor Barbara is able to stave off loss forever: Barbara’s house burns down and Jill cannot be resurrected. However, Barbara feels liberated after her house burns, and Joanna rediscovers her artistic eye. Perhaps what we need to remember, and what the stories in Marisa Labozzetta’s Thieves Never Steal in the Rain remind us, is that we can’t prevent loss and somehow we have to cope with it. In coping with the loss, we can rediscover our best?selves.
Apresenta o
Peralva Angelina
Educa??o e Pesquisa , 2002,
The resignation of the Santer-Commission: the impact of 'trust' and 'reputation'
Angelina Topan
European Integration Online Papers , 2002,
Abstract: This contribution begins with reciting the facts behind the resignation of the European Commission under Jacques Santer, followed by theoretical considerations on the significance of trust and reputation from the principal-agent-theory perspective. The third part puts the emphasis on discussing as to which extent a loss of trust and reputation had an influence in the resignation of the Santer-Commission. The author concludes that the Santer-Commission underestimated the increased power of the European Parliament. The inadequate information policy and the increasing practice of manipulating documents led to a loss of trust. After the threshold had been crossed in connection with the BSE-scandal further violations finally led to the destruction of reputation of the Santer-Commission.
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