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Search Results: 1 - 10 of 461948 matches for " A. Hecht "
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Categorías étnicas: Un estudio con ni?os y ni?as de un barrio indígena
Hecht,Ana Carolina; García,Mariana;
Revista Latinoamericana de Ciencias Sociales, Ni?ez y Juventud , 2010,
Abstract: the aim of this paper is to reconstruct children's perspectives on ethnic identifications. we base our studies in a particular case of collaborative research project with toba (an argentinean indigenous group) children, in an urban setting near buenos aires. in doing so, we present our consideration on the ways children participate actively on social life and articulate their own perspectives on social processes that involve them. firstly, we argue that our field work techniques became fundamental strategies of approaching to children voices. secondly, we explore children's agreements, negotiations and disagreements on ethnic identifications, while we regard their social relationships.
Sustainability, well being, and environmental protection: perspectives and recommendations from an Environmental Protection Agency forum
Dinah A. Koehler,Alan D. Hecht
Sustainability : Science, Practice and Policy , 2006,
Abstract: According to panelists at a recent EPA-sponsored forum, at its essence sustainability requires the simultaneous promotion of equitable economic growth, environmental protection, and social well being. Panel members, including economists, policy makers, sociologists, and business strategists, agreed that a sustainable economy should preserve its capacity to generate income, which is made possible by maintaining natural capital. However, they also noted that the limited data available leads to the conclusion that the current scale and quality of economic activity is reducing the capacity of the biosphere to sustain the economy, and is fundamentally unfair to future generations. For EPA to respond effectively, it will have to strengthen the integration of traditional physical and biological research with behavioral and economic research. It will also require institutions that support equitable access to resources and a political system that can respond to today’s poor as well as providing for future generations. Several panelists noted that habit formation and consumption patterns, which often lack a clear rational economic base, can significantly shape the relationship between income and well being. This research implies that public policy directed at sustainability can and should incorporate social values not necessarily reflected in the traditional economic theory of decision making. Several recommendations which emerged from the forum focused on the need to foster high quality data on sustainability indicators, policy mechanisms that use economic incentives, and public education regarding what constitutes sustainable decision making.
Categorías étnicas. Un estudio con ni os y ni as de un barrio indígena
Ana Carolina Hecht,Mariana García
Revista Latinoamericana de Ciencias Sociales, Ni?ez y Juventud , 2010,
Abstract: En este artículo reflexionamos sobre las categorías de identificación utilizadas por los ni os y ni as que viven en un “barrio toba (qom)” en la periferia de Buenos Aires (Argentina). Está organizado en tres partes: primeramente expondremos la articulación entre diversas herramientas metodológicas para reconstruir las perspectivas de los ni os y ni as. Allí explicitaremos cómo concebimos teóricamente a los ni os y ni as y de qué manera fuimos incorporándolos en nuestras investigaciones. Luego, desarrollaremos las disputas acerca de la adscripción étnica de y entre los ni os y ni as, considerando que en el barrio se identifican a sí mismos y a los demás principalmente como “toba” y/o “no-toba”, pero también como “criollo”, “descendientes de toba” y/o “mestizo”. Por último, presentaremos las principales conclusiones a las que arribamos.
More about orbitally excited hadrons from lattice QCD
T. A. DeGrand,M. W. Hecht
Physics , 1992, DOI: 10.1103/PhysRevD.46.3937
Abstract: This is a second paper describing the calculation of spectroscopy for orbitally excited states from lattice simulations of Quantum Chromodynamics. New features include higher statistics for P-wave systems and first results for the spectroscopy of D-wave mesons and baryons, for relatively heavy quark masses. We parameterize the Coulomb gauge wave functions for P-wave and D-wave systems and compare them to those of their corresponding S-wave states.
Where Do We Stand on Locating the Self?  [PDF]
Jakub Limanowski, Heiko Hecht
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.24049
Abstract: The subjective location of the Self in the body is a traditionally problematic question, and it can only be addressed from the first-person perspective. However, this does not preclude an empirical approach to the question. In the present study, we examined whether a large sample of participants would be willing and able to determine the perceived location of their Self. The main goal was to assess current beliefs about the nature of the Self and its assumed relation to specific bodily organs. Eighty-seven participants indicated the center of their Self by placing crosshairs on human silhouettes and abstract, non-human silhouettes with varying anatomy. Results show a clearly dominant role of the brain and the heart for Self-location in humans, but only of the brain for Self-location in abstract creatures. Moreover, results reveal that people believe there is one single point inside the human body where their Self is located.
Past, Present and Future: Urgency of Dealing with Climate Change  [PDF]
Alan D. Hecht
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.45069
Abstract:

This paper gives an historic perspective on 10 critical phases and actions in advancing an understanding of climate change and taking appropriate domestic and international action. Credit goes to atmospheric scientists for their committed efforts to understand, model and measure the impacts of climate change. Today, greenhouse gases are at a record level and little doubt remains that greenhouse gases (GHG) warm the atmosphere and that human-made climate change is real. Recognizing the urgency of responding to climate change, the 2013 US Climate Action Plan aims to cut carbon emissions and prepare to deal effectively with the economic, social, and environmental impacts of climate change. Many US states, Tribes, and local communities have also begun to take action to reduce GHG emissions and adapt to the impact of climate change, especially on disadvantaged communities. While recognition of the urgency of action on climate change is growing in government and in large parts of the business and financial sector, it has taken over 40 years to get to this point. While an understanding of the reality and impact of climate change has grown, significant efforts to reduce the concentration of greenhouse gases in the atmosphere and stabilize global warming have not occurred. The problem that society faces is not the absence of scientific knowledge, but rather the need to reduce GHG emissions and create resilient and adaptive responses to climate change. This paper concludes that future successes will need more effective collaboration between government, business, and society to address climate change and greater public understanding of the impacts of climate change on human health and economic well-being.

Histological and Morphological Study of the Intestines of Wistar Rat Fetuses in a Modified Gastroschisis Experimental Model  [PDF]
André Luis Hecht Sartori, Marina Ferreira Rosa de Vilhena, Gabriela Samaha Fran?a, Willy Marcus Fran?a
Surgical Science (SS) , 2016, DOI: 10.4236/ss.2016.72010
Abstract: In gastroschisis (G), the lesion degree of exposed intestinal segments is related to the time of its contact with the amniotic fluid (AF) and exposure to meconium which is the cause of intestinal morphological and histological alterations. The outcome of these alterations is intestinal hypoperistalsis and nutrient absorption deficiency, which contribute to increased morbidity and high medical-hospital costs. In this study, morphological and histological intestine alterations were identified at two different contact occasions with AF. Experimental gastroschisis (G) was performed on Wistar rat fetuses at a single gestational age on day 18.5th. The fetuses were removed on the 20.5th (G-1) and 21.5th days (G-2). Fetuses of both groups were divided in 3 sub-groups: control (C), gastroschisis (G) and sham (S). Measurements were taken of the Whole Set including fetus, placenta and membranes with AF (WS), fetus body weight (BW), intestinal weight (IW) and their diameters (DI). The objective of the present study is to test a new gastroschisis experimental model and identify differences in morphological and histological alterations in these two gestational periods that may be directly related to intestinal motility disorders in G. The WS and BW presented no significant statistical difference when compared G1 and G2. The results of the intestine average weight of G2 fetuses were significantly higher when compared to G1 fetuses in all subgroups (C: p = 0.02; G: p = 0.01; S: p = 0.02, Mann Whitney). The results of the intestinal average diameters (D/d) in G1 and G2 presented significant statistical difference only in G subgroup (p < 0.05, Kruskal Wallis). When compared intestinal average diameters, there was significant statistical difference of G fetuses in G1 and G2 (p < 0.05, Mann Whitney). In conclusion, the present experimental G model was adequate to reproduce G in rat fetuses. All G fetuses presented significant statistical difference when compared to other group in their subgroup and when compared G1 and G2 (p < 0.05). These alterations can explain the difficulties in accomplishing adequate peristalsis in G neonate bearers.
Lack of mutations in the PVRL3 gene in North American caucasians with non-syndromic cleft lip/palate
S?zen, Mehmet A.;Hecht, Jacqueline T.;Spritz, Richard A.;
Genetics and Molecular Biology , 2008, DOI: 10.1590/S1415-47572008000400008
Abstract: cleft lip with or without cleft palate (clp) is one of the most common birth defects. in about 70% of cases, clp occurs as an isolated anomaly, denoted non-syndromic clp (nsclp). genetic linkage and association studies have implicated many loci in susceptibility to nsclp, including some members of the nectin gene family. we performed mutation screening of the pvrl3 gene that encodes nectin-3 in 73 unrelated caucasian nsclp patients and 105 unrelated controls from north america. we detected no sequence variants in the pvrl3 gene in either the nsclp patients or the controls. these data suggest that pvrl3 is not an important susceptibility gene for nsclp in the north american caucasian population.
Mutation and association analysis of the PVR and PVRL2 genes in patients with non-syndromic cleft lip and palate
S?zen, Mehmet A.;Hecht, Jacqueline T.;Spritz, Richard A.;
Genetics and Molecular Biology , 2009, DOI: 10.1590/S1415-47572009000300007
Abstract: orofacial clefts (ofc; mim 119530) are among the most common major birth defects. here, we carried out mutation screening of the pvr and pvrl2 genes, which are both located at an ofc linkage region at 19q13 (ofc3) and are closely related to pvrl1, which has been associated with both syndromic and non-syndromic cleft lip and palate (nsclp). we screened a total of 73 nsclp patients and 105 non-cleft controls from the usa for variants in pvr and pvrl2, including all exons and encompassing all isoforms. we identified four variants in pvr and five in pvrl2. one non-synonymous pvr variant, a67t, was more frequent among nsclp patients than among normal controls, but this difference did not achieve statistical significance.
What can other animals tell us about human social cognition? An evolutionary perspective on reflective and reflexive processing
E. E. Hecht,R. Patterson,A. K. Barbey
Frontiers in Human Neuroscience , 2012, DOI: 10.3389/fnhum.2012.00224
Abstract: Human neuroscience has seen a recent boom in studies on reflective, controlled, explicit social cognitive functions like imitation, perspective-taking, and empathy. The relationship of these higher-level functions to lower-level, reflexive, automatic, implicit functions is an area of current research. As the field continues to address this relationship, we suggest that an evolutionary, comparative approach will be useful, even essential. There is a large body of research on reflexive, automatic, implicit processes in animals. A growing perspective sees social cognitive processes as phylogenically continuous, making findings in other species relevant for understanding our own. One of these phylogenically continuous processes appears to be self-other matching or simulation. Mice are more sensitive to pain after watching other mice experience pain; geese experience heart rate increases when seeing their mate in conflict; and infant macaques, chimpanzees, and humans automatically mimic adult facial expressions. In this article, we review findings in different species that illustrate how such reflexive processes are related to (“higher order”) reflexive processes, such as cognitive empathy, theory of mind, and learning by imitation. We do so in the context of self-other matching in three different domains—in the motor domain (somatomotor movements), in the perceptual domain (eye movements and cognition about visual perception), and in the autonomic/emotional domain. We also review research on the developmental origin of these processes and their neural bases across species. We highlight gaps in existing knowledge and point out some questions for future research. We conclude that our understanding of the psychological and neural mechanisms of self-other mapping and other functions in our own species can be informed by considering the layered complexity these functions in other species.
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