Analysis and modeling of active occupancy of the residential sector in Spain: an indicator of residential electricity consumption

The growing energy consumption in the residential sector represents about 30% of global demand. This calls for Demand Side Management solutions propelling change in behaviors of end consumers, with the aim to reduce overall consumption as well as shift it to periods in which demand is lower and where the cost of generating energy is lower. Demand Side Management solutions require detailed knowledge about the patterns of energy consumption. The profile of electricity demand in the residential sector is highly correlated with the time of active occupancy of the dwellings; therefore in this study the occupancy patterns in Spanish properties was determined using the 2009–2010 Time Use Survey (TUS), conducted by the National Statistical Institute of Spain. The survey identifies three peaks in active occupancy, which coincide with morning, noon and evening. This information has been used to input into a stochastic model which generates active occupancy profiles of dwellings, with the aim to simulate domestic electricity consumption. TUS data were also used to identify which appliance-related activities could be considered for Demand Side Management solutions during the three peaks of occupancy.

Enhanced MALDI MS sensitivity by weak base additives and glycerol sample coating

The concept of rationally designing MALDI matrices has been extended to the next “whole sample” level. These studies have revealed some unexpected and exploitable insights in improving MALDI sensitivity. It is shown that (i) additives which only provide additional laser energy absorption are best to be avoided; (ii) the addition of proton donors in the form of protonated weak bases can be highly beneficial; (iii) the addition of glycerol for coating crystalline samples is highly recommended. Overall, analytical sensitivity has been significantly increased compared to the current “gold” standards in MALDI MS, and new insights into the mechanisms and processes of MALDI have been gained.

Sampling and analyzing metals in soils for archaeological prospection: a critique

This paper presents a critique of current methods of sampling and analyzing soils for metals in archaeological prospection. Commonly used methodologies in soil science are shown to be suitable for archaeological investigations, with a concomitant improvement in their resolution. Understanding the soil-fraction location, concentration range, and spatial distribution of autochthonous (native) soil metals is shown to be a vital precursor to archaeological-site investigations, as this is the background upon which anthropogenic deposition takes place. Nested sampling is suggested as the most cost-effective method of investigating the spatial variability in the autochthonous metal concentrations. The use of the appropriate soil horizon (or sampling depth) and point sampling are critical in the preparation of a sampling regime. Simultaneous extraction is proposed as the most efficient method of identifying the location and eventual fate of autochthonous and anthropogenic metals, respectively.

Distinct behavioral phenotypes in male mice lacking the thyroid hormone receptor alpha1 or beta isoforms

Thyroid hormones influence both neuronal development and anxiety via the thyroid hormone receptors (TRs). The TRs are encoded by two different genes, TRalpha and TRbeta. The loss of TRalpha1 is implicated in increased anxiety in males, possibly via a hippocampal increase in GABAergic activity. We compared both social behaviors and two underlying and related non-social behaviors, state anxiety and responses to acoustic and tactile startle in the gonadally intact TRalpha1 knockout (alpha1KO) and TRbeta (betaKO) male mice to their wild-type counterparts. For the first time, we show an opposing effect of the two TR isoforms, TRalpha1 and TRbeta, in the regulation of state anxiety, with alpha1 knockout animals (alpha1KO) showing higher levels of anxiety and betaKO males showing less anxiety compared to respective wild-type mice. At odds with the increased anxiety in non-social environments, alpha1KO males also show lower levels of responsiveness to acoustic and tactile startle stimuli. Consistent with the data that T4 is inhibitory to lordosis in female mice, we show subtly increased sex behavior in alpha1KO male mice. These behaviors support the idea that TRalpha1 could be inhibitory to ERalpha driven transcription that ultimately impacts ERalpha driven behaviors such as lordosis. The behavioral phenotypes point to novel roles for the TRs, particularly in non-social behaviors such as state anxiety and startle.

Gravimetric study of a potential mineral deposit in the Itapororoca region, Brazil

A semi-detailed gravity survey was carried out over an area of 650 km(2) localized in the Eo-Neoproterozoic coastal zone of Paraiba State where 548 new gravity stations were added to the existing database. Gravity measurements were made with a LaCoste and Romberg model G meter with a precision of 0.04 mGal. The altitude was determined by barometric levelling with a fixed base achieving a 1.2 m measure of uncertainty, corresponding to an overall accuracy of 0.24 mGal for the Bouguer anomaly. The residual Bouguer map for a 7th degree regional polynomial showed a circumscribed negative anomaly coincident with a localized aero-magnetic anomaly and with hydro-thermally altered outcrops, near the city of Itapororoca. The 3D gravity modelling, constrained by geologic mapping was interpreted as a low density, fractured and/or altered material with a most probable volume of approximately 23 km(3), extending to about 8,500 m depth. This result is in accordance with a volcanic body associated with hydrothermal processes accompanied by surface mineralization evidence, which may be of interest to the mining industry.

Microstructural, structural and electrical properties of La(3+)-modified Bi(4)Ti(3)O(12) ferroelectric ceramics

Bi(4-x)La(x)Ti(3)O(12) (BLT) ceramics were prepared and studied in this work in terms of La(3+)-modified microstructure and phase development as well as electrical response. According to the results processed from X-ray diffraction and electrical measurements, the solubility limit (XL) of La(3+) into the Bi(4)Ti(3)O(12) (BIT) matrix was here found to locate slightly above x = 1.5. Further, La(3+) had the effect of reducing the material grain size, while changing its morphology from the plate-like form, typical of BIT ceramics, to a spherical-like one. The electrical results presented and discussed here also include the behavior of the temperature of the ferroelectric-paraelectric phase transition as well as the normal or diffuse and/or relaxor nature of this transition depending on the La(3+) content. (c) 2008 Elsevier Ltd. All fights reserved.

Relação entre a cultura organizacional e os indicadores de desempenho econômico, ambiental, e social de sustentabilidade do triple bottom line (3BL): um estudo nas companhias de energia elétrica

Tese apresentada ao Programa de Pós-Graduação em Administração da Universidade Municipal de São Caetano do Sul para obtenção do título de Doutora em Administração

Testing the externalities hypothesis of endogenous growth using cointegration

The initial endogenous growth models emphasized the importance of externaI effects in explaining sustainable growth across time. Empirically, this hypothesis can be confirmed if the coefficient of physical capital per hour is unity in the aggregate production function. Although cross-section results concur with theory, previous estimates using time series data rejected this hypothesis, showing a small coefficient far from unity. It seems that the problem lies not with the theory but with the techniques employed, which are unable to capture low frequency movements in high frequency data. This paper uses cointegration - a technique designed to capture the existence of long-run relationships in multivariate time series - to test the externalities hypothesis of endogenous growth. The results confirm the theory' and conform to previous cross-section estimates. We show that there is long-run proportionality between output per hour and a measure of capital per hour. U sing this result, we confmn the hypothesis that the implied Solow residual can be explained by government expenditures on infra-structure, which suggests a supply side role for government affecting productivity and a decrease on the extent that the Solow residual explains the variation of output.

Sistemas de amortização: o conceito de consistência financeira e suas implicações

Em operações de financiamento, em especial as que se destinam a aquisição de imóveis, que costumam ser de longo prazo, envolvendo pois um grande número de prestações, usualmente mensais, é crucial que se estabeleçam procedimentos que permitam o correto e inequívoco acompanhamento da evolução do débito (estado da dívida). Isto por que, fundamentalmente, tem que ser prevista a possibilidade de liquidação antecipada, total ou parcial, do principal financiado. Ademais, quando o tomador do empréstimo é uma pessoa jurídica, há que seja devidamente levado em conta o fato de que os juros pagos podem ser deduzidos para fins fiscais. Consequentemente, é de suma importância que, em cada prestação, seja apurado, de uma maneira isenta de controvérsias, o que está sendo pago a título de juros e o que está implicando em uma redução do débito. Ou seja, tendo presente a definição apresentada, por exemplo, em Houaiss (2001), deve-se distinguir, em cada prestação, o que é a parcela de juros e o que é o componente de amortização. Todavia, sucede que, ao menos em princípio, embora a tarefa se afigure como trivial, têm sido apresentadas e propostas diferentes interpretações do que sejam juros e do que significa amortização. De um lado, por considerarem que o regime de juros compostos, que está subjacente tanto na popular Tabela Price (TP) como no Sistema de Amortização Constante (SAC), é abusivo e implique na ocorrência do que, no jargão jurídico, se denomina de anatocismo, temos aqueles que, como Nogueira (2013) e Rovina (2009), propugnam para que se adote o regime de juros simples.

Análise do custo-aluno das creches municipais diretas do município de Santo André

O presente estudo tem como foco o levantamento e análise do custo-aluno das creches, primeira etapa da Educação Infantil, que compreende as crianças de 0 a 3 anos de idade. Ele responde à situação problema apresentada pela Secretaria de Educação do Município de Santo André (SP), caracterizada pela necessidade do aprimoramento da gestão dos recursos financeiros em um cenário de dificuldades orçamentárias e aumento de demanda. Foram selecionadas 12 unidades municipais da rede direta, com atendimento exclusivo a crianças nesta faixa etária. A metodologia utilizada teve como base a utilização do Sistema de Informações do Orçamento Público municipal, a partir do qual foram realizadas as consultas e definições dos componentes do custo do objeto em estudo, sendo que a metodologia de acumulação de custos utilizada foi o custeio por absorção. Adicionalmente, os autores analisaram os processos administrativos relacionados aos itens de custeio e realizaram entrevistas com os diversos atores envolvidos nos processos de gestão daquela e de outras secretarias, bem como acadêmicos dedicados ao estudo de custos no setor público, cujas experiências relatadas subsidiaram a pesquisa e as avaliações realizadas. O estudo apontou um custo-aluno médio de R$ 11.970,72 sendo que, para melhor análise dos resultados, as unidades escolares foram agrupadas em três categorias de acordo com o número de alunos: i) pequeno porte: com até 149 alunos (três unidades); ii) médio porte: entre 150 e 190 alunos (cinco unidades); e, iii) grande porte: com mais de 190 alunos (quatro unidades). A partir dessa divisão foi possível concluir que as creches de grande porte apresentaram vantagem comparativa em relação às demais, com custo-aluno médio de R$ 11.684,03, seguidas das creches de médio porte, R$ 11.751,46 e pelas unidades de pequeno porte, que apresentaram o custo-aluno de R$ 13.235,88, ou seja, 13,23% acima das escolas de grande porte. Esses resultados indicam a existência de ganhos de escalas de acordo com o porte da creche e pode subsidiar a tomada de decisão dos gestores para futuros projetos de expansão da rede pública de creches.

Presence of antibodies against Leishmania chagasi in haemodialysed patients

SOUZA,Roberto Mascarenhas et al.Presence of antibodies against Leishmania chagasi in haemodialysed patients.Transactions of the Royal Society of Tropical Medicine and Hygiene,v. 103, p.749-751, 2009.

Neurobiology and clinical implications of lucid dreaming

Several lines of evidence converge to the idea that rapid eye movement sleep (REMS) is a good model to foster our understanding of psychosis. Both REMS and psychosis course with internally generated perceptions and lack of rational judgment, which is attributed to a hyperlimbic activity along with hypofrontality. Interestingly, some individuals can become aware of dreaming during REMS, a particular experience known as lucid dreaming (LD), whose neurobiological basis is still controversial. Since the frontal lobe plays a role in self-consciousness, working memory and attention, here we hypothesize that LD is associated with increased frontal activity during REMS. A possible way to test this hypothesis is to check whether transcranial magnetic or electric stimulation of the frontal region during REMS triggers LD. We further suggest that psychosis and LD are opposite phenomena: LD as a physiological awakening while dreaming due to frontal activity, and psychosis as a pathological intrusion of dream features during wake state due to hypofrontality. We further suggest that LD research may have three main clinical implications. First, LD could be important to the study of consciousness, including its pathologies and other altered states. Second, LD could be used as a therapy for recurrent nightmares, a common symptom of depression and post-traumatic stress disorder. Finally, LD may allow for motor imagery during dreaming with possible improvement of physical rehabilitation. In all, we believe that LD research may clarify multiple aspects of brain functioning in its physiological, altered and pathological states.