10,847 research outputs found
Método de autentificación óptica utilizando funciones físicas inclonables
No full textEn el presente trabajo se construyo un método de autentificación óptica.
Utilizando funciones fisicas inclonables, es decir, que no se pueden clonar.
Para que el método funcione se requiere recolocar la llave con una precisión de
micrómetros. Para esto se construyó un arreglo robusto de alta repetibilidad.
Con el mismo fin se diseñó e implementa un algoritmo que busca la posición
correcta de la llave. Una vez que se encuentra la mejor posición, el sistema
se ajusta a sí mismo antes de leer la llave. El sistema construido es portátil,
siendo de dimensiones de una caja de botas, un peso de 4,5kg. Además que
se transportó en un automovil particular en una ocasión una distancia de
372km y en otra ocasión 278km sin desalinearse. Con esto se demuestra
que se puede construir un método de autentificación óptica de portátil, alta
seguridad y fidelidad
Some aspects of the magnitude and consequences of domestic violence against women. A pilot study [Algunos aspectos sobre la magnitud y trascendencia de la violencia domestica contra la mujer: Un estudio piloto]
No full textThere are different terms concerning domestic violence against women. We understand domestic violence against women as a wide variety of behaviors perpetrated by women's partners, including emotional, physical and sexual abuse, and those activities targeting women's properties and close women's relatives in order to keep the relationship under control. There are different methodological approaches and particular techniques for studying the frequency and distribution of this problem, which contributes to a wide range of violence. Many studies focus on the analysis of centers for women. There is some research that has considered a base line population in the study design. Mexico has published only two studies of these characteristics, however, the results are not completely comparable. Despite these obstacles, the frequency with which women are abused by their partners in different countries is between 11% in Canada, to 67% in New Guinea. The objective of this communication is to present a pilot study on the findings of domestic violence against women, conducted in three socioeconomic groups in the metropolitan area of Guadalajara. The questionnaire has four sections. a) Socioeconomic characteristics; b) Reproductive health features; c) Women abuse and its consequences; and d) Services required by women in a relationship of abuse. Some ethic concerns, specifically those related to women's safety and training are discussed by the field work group, Forty six percent of the women recognized themselves as abused women. The main perpetrator was their partner, one third of the women were emotionally abused; one fifth physically abused and, 12% sexually abused. A temporal pattern of violent relationship was not identified. The consequences for women involved in such violent relations and some women's responses to abuse are discussed
Some aspects of the magnitude and consequences of domestic violence against women. A pilot study [Algunos aspectos sobre la magnitud y trascendencia de la violencia domestica contra la mujer: Un estudio piloto]
No full textThere are different terms concerning domestic violence against women. We understand domestic violence against women as a wide variety of behaviors perpetrated by women's partners, including emotional, physical and sexual abuse, and those activities targeting women's properties and close women's relatives in order to keep the relationship under control. There are different methodological approaches and particular techniques for studying the frequency and distribution of this problem, which contributes to a wide range of violence. Many studies focus on the analysis of centers for women. There is some research that has considered a base line population in the study design. Mexico has published only two studies of these characteristics, however, the results are not completely comparable. Despite these obstacles, the frequency with which women are abused by their partners in different countries is between 11% in Canada, to 67% in New Guinea. The objective of this communication is to present a pilot study on the findings of domestic violence against women, conducted in three socioeconomic groups in the metropolitan area of Guadalajara. The questionnaire has four sections. a) Socioeconomic characteristics; b) Reproductive health features; c) Women abuse and its consequences; and d) Services required by women in a relationship of abuse. Some ethic concerns, specifically those related to women's safety and training are discussed by the field work group, Forty six percent of the women recognized themselves as abused women. The main perpetrator was their partner, one third of the women were emotionally abused; one fifth physically abused and, 12% sexually abused. A temporal pattern of violent relationship was not identified. The consequences for women involved in such violent relations and some women's responses to abuse are discussed
Intergranular Cracking In Alloy 690 With Nb, Mo, And Hf Additions: In Situ Sem High Temperature Deformation Study
No full textThe microstructure behavior during high temperature deformation of Ni-base alloys based on alloy 690 modified with Nb, Mo, and Hf additions were studied. Optical and electron microscopy were used to characterize these materials and the results were compared with Calphadbased modeling results. The alloys behavior was studied between 500 and 1000 °C using an in-situ high temperature deformation test. The role of precipitates on the grain boundary morphology and their effect on grain boundary sliding and the mechanism of ductility-dip cracking are discussed. Both, undulated grain boundaries and primary intra-granular precipitates improved the alloy DDC resistance. © 2012 Trans Tech Publications, Switzerland.706-709945950The Minerals, Metals and Materials Society (TMS),NSFArkoosh, M.A., Fiore, N.F., (1972) Metallurgical Transactions, 3, p. 2235Rhines, F.N., Wray, P.J., (1961) Transactions of the ASM, 54, p. 117Haddrill, D.M., Baker, R.G., (1965) British Welding Journal, p. 411Ii Noecker, F.F., Dupont, J.N., (2009) Welding Journal, 88, p. 7Nissley, N.E., Lippold, J.C., (2009) Welding Journal, 88, p. 131Ramirez, A.J., Lippold, J.C., (2004) Mat. Sci. and Eng. A, 380, p. 259Gifkins, R.C., (1994) Materials Characterization, 32, p. 59Langdon, T.G., (2006) Materials Science, 41, p. 597Ramirez, A.J., Lippold, J.C., (2005) Hot Cracking Phenomena in Welds, p. 19. , edited by T. Böllinghaus, H. HeroldCollins, M.G., Ramirez, A.J., Lippold, J.C., (2004) Welding Journal, 83, p. 39Yamaguchi, S., (1980) Phil. Trans. R. Soc. Lond. A, 295, p. 122Ramirez, A.J., Garzón, C.M., (2008) Hot Cracking Phenomena in Welds, 2, p. 427. , edited by T. Böllinghaus, H. Herold, C. Cross, J.C. LippoldZimina, L.N., Burova, N.N., Makushok, O.V., (1986) Met. Sci. and Heat Treatment, 28 (2), p. 130Duhl, J.M., Sullivan, C.P., (1971) Journal of Metals, pp. 38-40Torres, E.A., Paternella, F.G., Caram, R., Ramirez, A.J., (2009) 8 th International Conference on Trends in Welding Research, p. 354. , Pine-Mountain, GA-USAUnfried S, J., (2010) Mathematical Modelling of Weld Phenomena, 9, p. 983. , edited by Maney. H CerjakH K D H Bhadeshia and E KozeschnikPigrova, G.D., (2005) Metal Science and Heat Treatment, 47 (11-12), p. 544Torres, E.A., Caram, R., Ramirez, A.J., (2010) Materials Science Forum, 638-642, p. 2858Unfried S, J., Torres, E.A., Ramirez, A.J., (2011) Hot Cracking Phenomena in Welds, 3. , edited by T. Böllinghaus, H. Herold C. Cross, in pressAfonso, C.R.M., Lippold, J.C., Ramirez, A.J., (2010) Metallurgical Transactions A, , submitted t
J.C. Steyn Collection index
No full textThis index describes the J. C. Steyn collection which includes background material for 3 biographies by J.C. (Jaap) Steyn namely N.P. van Wyk Louw, P.J. Cillié and MER (M.E. Rothman). Prof. J.C. Steyn (1939-) is an educationist, linguist and author. Correspondence ; clippings ; photographs ; book reviews ; articles ; speeches ; varia compiled in 23 pamphlet boxes
Monitoring and modelling unsaturated and saturated flow to evaluate performance of slurry walls in Rho (Italy)
No full textA former chemical district close to Milan (Italy) is still source of contamination by chlorinated solvents in aquifers that supply drinking water, though slurry walls were built in the eighties to prevent spreading. An unsaturated-saturated numerical model was performed to assess overall performance of this physical confinement, and to infer hydraulic properties and estimated geometry of the barriers and the aquitard at this specific scale. Water leaking from the source and recharge of the aquifer under different scenario simulation were assumed as global performance indicators. Results showed that incidental material buried in the shallower portion of the investigated aquifer (bricks, waste material) dramatically affect the natural recharge of the encapsulated area. The decrease of ratio between leakage from lateral barriers and leakage from the bottom interface to the aquitard, from early stages of wet conditions (when saturated front is higher) to drought stages, was also computed.Un antiguo polígono químico industrial cerca de Milán (Italia) es fuente de contaminación de disolventes clorados en los acuíferos explotados para consumo humano, aun cuando un sistema de pantallas enterradas fue construido en los ochenta para evitar desprendimiento. Un modelo numérico saturadoinsaturado fue realizado para evaluar rendimientos del confinamiento físico, deducir propiedades hidráulicas y la geometría tanto de las barreras como del acuitardo a escala local. Como indicadores globales del rendimiento se asumieron el goteo de agua desde la fuente y la recarga del acuífero bajo distintas hipótesis. Los resultados demuestran que materiales incidentales enterrados en los horizontes someros del acuífero estudiado (ladrillo, material residual) afectan dramáticamente la recarga natural de la zona encapsulada. La disminución del radio entre goteo desde las barreras laterales y el goteo a través de la base del acuífero hacia el acuitardo, desde momentos iniciales con condiciones húmedas a condiciones de sequía, fue también calculada
Product Innovation Knowledge Transfer for Developing Countries: Towards a systematic Transfer Approach
No full textThe transfer of knowledge on product innovation to small- and medium-sized enterprises and local knowledge institutions in developing countries is expected to be one of the key drivers for competiveness and economical growth, and a part of the solution to environmental and social challenge. In that respect, this PhD study focuses on how the process of the current knowledge transfer takes place and how it can be improved. A combination of literature review and empirical research has resulted into a conceptual framework to describe the complex and dynamic process of product innovation knowledge transfer to developing countries. In order to improve this process, a systematic approach has been developed and operationalized by a needs assessment tool and a design manual: The UNEP Design for Sustainability for Developing Economies (D4S-DE) Manual (www.d4s-de.org). Both tools have been tested in practice by practitioners and have been evaluated by an academic review board.Design EngineeringIndustrial Design Engineerin
Male violence against heterosexual partners: Facts and challenges. Review of Mexican literature [La violencia de varones contra sus parejas heterosexuales: Realidades y desafíos. Un recuento de la producción mexicana]
No full textViolence against women by partners (VAWP) has been systematically studied in Mexico in the past 15 years. The aim of this paper is to reflect on the contributions on this topic in Mexico. The discussion focuses on the magnitude of this phenomenon, stressing its theoretical, methodological, and technical implications; the relationship between violence and a variety of factors; and the outcomes of VAWP on women themselves. The manuscript features the main contributions from quantitative and qualitative studies
Where do we draw lines: professional relationship boundaries and the child and youth care practitioner
No full textThe question of professional relationship boundaries is a poignant one, in light of the many boundary grey-zones that are created by the variety of young people’s needs, practice settings and professional relationship contexts within the field of child and youth care. In order to support practitioners’ development of critical thought and awareness of professional boundaries, this paper applies a professional relationship boundaries conceptual framework to child and youth care work, and the literature is consulted to explore the impacts of boundary violations, influences on individual’s boundaries, cues to indicate blurring boundaries, and key strategies to maintain balanced boundaries
Male violence against heterosexual partners: Facts and challenges. Review of Mexican literature [La violencia de varones contra sus parejas heterosexuales: Realidades y desafíos. Un recuento de la producción mexicana]
No full textViolence against women by partners (VAWP) has been systematically studied in Mexico in the past 15 years. The aim of this paper is to reflect on the contributions on this topic in Mexico. The discussion focuses on the magnitude of this phenomenon, stressing its theoretical, methodological, and technical implications; the relationship between violence and a variety of factors; and the outcomes of VAWP on women themselves. The manuscript features the main contributions from quantitative and qualitative studies
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