Multi-particle quantum walks in one-dimensional lattice

Quantum walk is a counterpart of classical random walk in the quantum regime that exhibits non-classical behaviors and outperforms classical random walk in various aspects. It has been known that the spatial probability distribution of a single-particle quantum walk can expand quadratically in time while a single-particle classical random walk can do only linearly. In this paper, we analytically study the discrete-time quantum walk of non-interacting multiple particles in a one-dimensional infinite lattice, and investigate the role of entanglement and exchange symmetry in the position distribution of the particles during the quantum walk. To analyze the position distribution of multi-particle quantum walk, we consider the relative distance between particles, and study how it changes with the number of walk steps. We compute the relative distance asymptotically for a large number of walk steps and find that the distance increases quadratically with the number of walk steps. We also study the extremal relative distances between the particles, and show the role of the exchange symmetry of the initial state in the distribution of the particles. Our study further shows the dependence of two-particle correlations, two-particle position distributions on the exchange symmetry, and find exponential decrement of the entanglement of the extremal state with the number of particles

Childhood Exposure to Maltreatment: Do Social and Financial Resources Attenuate Caregiver Child Abuse Potential?

The present study sought to evaluate the role of protective factors such as social support and family resources on the relation between childhood abuse history and child abuse potential in a sample of caregivers and parents at significant risk for child abuse and neglect. This relation was examined using pre-service data from a randomized clinical trial (RCT) of a home-based parenting program. It was hypothesized that for caregivers or parents with significant risk factors (i.e., parental depression, substance abuse, and domestic violence), childhood history of maltreatment would be positively related to child abuse potential. Additionally, it was predicted that availability of resources would contribute to this relation such that higher levels of resources would decrease caregiver's child abuse potential. Two competing theories regarding the mechanisms of childhood maltreatment and parental abusive and neglectful behavior were examined: Bandura's social learning theory and Bowlby's attachment theory. Each of these theories has similarities and distinctions regarding the proposed mechanisms that underlie the impact of social and financial resources. This study examined these competing theories to determine which mechanisms are most strongly supported for families at significant risk for child abuse and neglect. Findings revealed that a child maltreatment history was significantly related to subsequent child abuse potential, F (11, 473) = 11.63, p < .001. Additionally, attachment F (4, 464) = 14.79, p < .001, R2 = .457 and social learning F (4, 470) = 14.50, p < .001, R2 = .437 each significantly impacted this relation. Results suggest the importance of providing supports in reducing child abuse potential amongst families with a child maltreatment history. More specifically, interventions that target the quality of relation between children and their caregivers are essential to attenuate the risks associated with childhood experiences of abuse.Psycholog

Evolución de los niveles séricos de enrofloxacina y su metabolito activo, ciprofloxacina, tras administración intramuscular y subcutánea en llamas

Sin resume

Análise do hiato de gênero na previdência social do Brasil

TCC (graduação) - Universidade Federal de Santa Catarina. Centro Sócio-Econômico. Economia.A estrutura demográfica no Brasil apresenta uma tendência de reversão da pirâmide etária, com maior concentração da população na parcela superior, os idosos, e um achatamento da parcela inferior, população mais jovem. Dados estatísticos da população mostram que as mulheres representam maioria na população idosa, devido à maior expectativa de vida comparada à expectativa projetada para os homens. Porém, essas mulheres, mesmo sendo maioria, possuem uma trajetória no mercado de trabalho até a aposentadoria em condições desiguais comparada aos homens. A aposentadoria é o benefício que as pessoas que atingem determinada idade, condição ou tempo de contribuição usufruem, resultado, na sua grande maioria, de anos de contribuição, sendo ela compulsória ou facultativa. As contribuições emitidas ao longo da vida laboral, ou a ausência delas, impactam diretamente no bem estar das mulheres na terceira idade através do benefício da aposentadoria. Segundo a literatura, a desigualdade de gênero no mercado de trabalho e, consequentemente, na aposentadoria pode ser resultado de alguns fatores: menores remunerações, dupla jornada de trabalho e maternidade. Mesmo com as mulheres mais escolarizadas, a análise dos dados de mercado de trabalho aponta para a existência do que a literatura chama de “teto de vidro”, estrutura que impede as mulheres de alcançar níveis mais elevados e ultrapassar barreiras no mercado de trabalho. A teoria econômica clássica encontra falhas para explicar este hiato de gênero. Segundo a economia feminista e de gênero, a teoria neoclássica do agente racional não considera a dinâmica social das mulheres que leva à desigualdade de gênero. Diante do exposto, o presente trabalho tem como objetivo analisar se há um hiato de gênero na previdência social no Brasil e os possíveis elementos que o justificam. Para realização desta análise, foram utilizados dados abertos da previdência social disponibilizados pelo SPREV e IBGE; e para análise do mercado de trabalho, os dados da PNAD Contínua - IBGE e do DIEESE. Os resultados indicam a presença de hiato de gênero na previdência social no Brasil, e que a causa esteja relacionada à estrutura do mercado de trabalho que mantém uma dinâmica desigual para as mulheres.The demographic structure in Brazil shows a tendency of reversing the age pyramid, with a greater concentration of the population in the upper portion, the elderly, and a flattening of the lower portion, the younger population. Statistical data on the population show that women represent the majority in the elderly population, due to the higher life expectancy compared to the projected expectation for men. However, these women, even though they are the majority, have a trajectory in the labor market until retirement in unequal conditions compared to men. Retirement is the benefit that people who reach a certain age, condition or time of contribution have, resulting, for the most part, from years of contribution, being either compulsory or optional. Contributions made throughout working life, or the absence of them, have a direct impact on the well-being of women in old age through the benefit of retirement. According to the literature, gender inequality in the labor market and, consequently, in retirement can be the result of a number of factors: lower salaries, double workload and maternity. Even for the higher graduated women, the analysis of labor market data points to the existence of what the literature calls a "glass ceiling," a structure that prevents women from reaching higher levels and overcoming barriers in the labor market. Classic economic theory flaws to explain this gender gap. According to feminist and gender economics, the neoclassical theory of the rational agent does not consider the social dynamics of women that leads to gender inequality. In view of the presented, this paper aims at analyzing whether there is a gender gap in social security in Brazil and the possible elements that justify it. For this analysis, open social security data made available by SPREV and IBGE were used; and for labor market analysis, data from PNAD Continua - IBGE and DIEESE. The results indicate the presence of a gender gap in social security in Brazil, and that the cause is related to the structure of the labor market that maintains an unequal dynamic for women

Pengaruh Pemanfaatan Lingkungan Sebagai Sumber Belajar Terhadap Hasil Belajar Siswa

This aims to determine (1) Avarage posttest result of study of IPS Integrated in class which will be given method of environmental utilization as model of learning is higher than in class given method of lecture, (2) Method of environmental utilization is more effective than method of lecture in Integrated IPS subjects class VIII in Public Junior High School 2 Liwa. This research is using quasi-experimental methods with Pretest-Posttest Control Group Design. Research result show that (1) The average value of IPS Integrated learning outcomes in the class given methods as environmental is utilization higher than in class given lecture methods. (2) Learning that using the environment as a learning resource is more effective than lecture methods on the subjects of Integrated IPS class VIII in Public Junior High School 2 Liwa.Penelitian ini bertujuan untuk mengetahui (1) Rata-rata postes hasil belajar IPS Terpadu pada kelas yang akan diberikan metode pemanfaatan lingkungan sebagai model pembelajaran lebih tinggi dibandingkan pada kelas yang diberi metode ceramah, (2) Metode pemanfaatan lingkungan lebih efektif dibandingkan metode ceramah pada mata pelajaran IPS  Terpadu kelas VII di SMP Negeri 2 Liwa. Penelitian menggunakan metode eksperimen semu dengan desain Pretest-Posttest Control Grup Desaign. Hasil penelitian menunjukkan bahwa (1) Nilai rata-rata postes hasil belajar IPS Terpadu pada kelas yang diberikan metode pemanfaatan lingkungan sebagai model pembelajaran lebih tinggi dibandingkan pada kelas yang diberi metode ceramah, (2) Pembelajaran yang memanfaatkan lingkungan sebagai sumber belajar lebih efektif dibandingkan metode ceramah pada mata pelajaran IPS Terpadu kelas VIII di SMP Negeri 2 Liwa.Kata kunci: hasil belajar IPS terpadu, pemanfaatan lingkungan, sumber belaja

The Journal of Mathematical Chemistry: A Bibliometric Profile

This paper describes the bibliometric characteristics of 2,398 articles published in the Journal of Mathematical Chemistry in the period 1987-2015. These articles have been analysed using data from the Web of Science Core Collection and demonstrate the contribution of the journal not only to mathematical chemistry but also to science more generally

Programa de Evaluación Genética de caracteres productivos, adaptativos y de comportamiento, en bovinos de carne para áreas desfavorecidas

La producción de carne bovina en áreas subtropical y templadas cálidas se ve afectada en cantidad y calidad debido a las condiciones de calor y humedad a lo largo del año. Las razas tradicionales son las que más sufren esa condición climática y por otra parte, las razas y/o cruzas más adaptadas muestran problemas de calidad de carne, menor precocidad reproductiva y de temperamento. Las razas bovinas de origen índico y africano muestran mayor adaptación al estrés térmico y las razas británicas son más susceptibles aunque existe variación individual. Los indicadores climáticos de estrés térmico son variados, aunque humedad relativa del ambiente y temperatura son los más importantes. En el animal se pueden realizar diversos ensayos que incluyen toma de información de temperatura corporal profunda y frecuencia respiratoria. Dichos ensayos permiten clasificar a los animales como resistentes o susceptibles al estrés térmico. Una raza sanga de origen africano (Tuli) y sus cruzas se están ensayando en la UCC como parte de la búsqueda de soluciones a los problemas planteados anteriormente. Los objetivos son: Implementar un sistema de evaluación genética para seleccionar una población bovina de carne adaptada a condiciones de estrés térmico. Estudiar atributos anátomo-fisiológicos y mecanismos de reacción fisiológica de adaptación a dicho estrés y describir el temperamento de la raza Tuli y sus cruzas, relacionándolo con producción, estrés y calidad de carne. Estimar parámetros genéticos poblacionales. Estudiar por medio de evaluación ecográfica diferencias entre animales de distintas razas en área de ojo de bife y espesor de grasa dorsal. Los animales a utilizar en este trabajo pertenecen a las razas Tuli puros, Aberdeen Angus, Hereford, cruzas F1, cruzas inter sé de las F1 (San Ignacio).Fil: Frank, Eduardo Narciso. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Alisio, Leonel Ángel. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentin

Programa de Evaluación Genética de caracteres productivos, adaptativos y de comportamiento, en bovinos de carne para áreas desfavorecidas

La producción de carne bovina en áreas subtropical y templadas cálidas se ve afectada en cantidad y calidad debido a las condiciones de calor y humedad a lo largo del año. Las razas tradicionales son las que más sufren esa condición climática y por otra parte, las razas y/o cruzas más adaptadas muestran problemas de calidad de carne, menor precocidad reproductiva y de temperamento. Las razas bovinas de origen índico y africano muestran mayor adaptación al estrés térmico y las razas británicas son más susceptibles aunque existe variación individual. Los indicadores climáticos de estrés térmico son variados, aunque humedad relativa del ambiente y temperatura son los más importantes. En el animal se pueden realizar diversos ensayos que incluyen toma de información de temperatura corporal profunda y frecuencia respiratoria. Dichos ensayos permiten clasificar a los animales como resistentes o susceptibles al estrés térmico. Una raza sanga de origen africano (Tuli) y sus cruzas se están ensayando en la UCC como parte de la búsqueda de soluciones a los problemas planteados anteriormente. Los objetivos son: Implementar un sistema de evaluación genética para seleccionar una población bovina de carne adaptada a condiciones de estrés térmico. Estudiar atributos anátomo-fisiológicos y mecanismos de reacción fisiológica de adaptación a dicho estrés y describir el temperamento de la raza Tuli y sus cruzas, relacionándolo con producción, estrés y calidad de carne. Estimar parámetros genéticos poblacionales. Estudiar por medio de evaluación ecográfica diferencias entre animales de distintas razas en área de ojo de bife y espesor de grasa dorsal. Los animales a utilizar en este trabajo pertenecen a las razas Tuli puros, Aberdeen Angus, Hereford, cruzas F1, cruzas inter sé de las F1 (San Ignacio).Fil: Frank, Eduardo Narciso. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Alisio, Leonel Ángel. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentin