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Search Results: 1 - 10 of 48 matches for " Orna Levran "
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Estimating ancestral proportions in a multi-ethnic US sample: implications for studies of admixed populations
Orna Levran, Olaoluwakitan Awolesi, Pei-Hong Shen, Miriam Adelson, Mary Jeanne Kreek
Human Genomics , 2012, DOI: 10.1186/1479-7364-6-2
Abstract:
Foundations for knowledge management
Elizabeth Orna
South African Journal of Information Management , 2009, DOI: 10.4102/sajim.v1i4.69
Abstract:
A contribution to the lexis of construction engineering textbooks: the case of 'building' and 'construction'
Concepción Orna Montesinos
Ibérica , 2008,
Abstract: The integration of a genre-based and a corpus-based instruction in ESP learning (Swales, 1990; Tribble, 2000; Ferguson, 2001; Flowerdew, 2005) has proved to be a suitable theoretical framework for describing the lexis of construction and architecture university textbooks, such as the sample compiled in the Construction Textbooks Corpus (CTC). This paper is a contribution to the study of the formal and semantic profiles of the lexis of this particular genre type and, by way of illustration, focuses on the case study of the lemmas build and construct. From a formal standpoint, the CTC reveals that the noun building (the first content word in the CTC) is six times more frequent than the verb build, and the noun construction (third in frequency) is eleven times more frequent than the verb construct. Semantically, the corpus displays a prevalence of technical meanings which refer to building and construction as the activity or business of erecting edifices or structures. By observing the lexical profile of construction textbooks, this paper will finally consider possible teaching/learning implications.
Gradings on composition superalgebras
Diego Aranda-Orna
Mathematics , 2013,
Abstract: We classify up to equivalence the gradings on Hurwitz superalgebras and on symmetric composition superalgebras, over any field. Also, classifications up to isomorphism are given in case the field is algebraically closed. By grading, here we mean group grading.
Fine gradings on simple exceptional Jordan pairs and triple systems
Diego Aranda-Orna
Mathematics , 2015,
Abstract: We give a classification up to equivalence of the fine group gradings by abelian groups on the Jordan pairs and triple systems of types bi-Cayley and Albert, under the assumption that the base field is algebraically closed of characteristic different from $2$. The associated Weyl groups are computed. We also determine, for each fine grading on the bi-Cayley and Albert pairs, the induced grading on the exceptional simple Lie algebra given by the Tits-Kantor-Koecher construction.
Higher Cell Viability and Enhanced Sample Quality Following Laser-Assisted Liposuction versus Mechanical Liposuction  [PDF]
Alexander Levenberg, Mickey Scheinowitz, Orna Sharabani-Yosef
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2015, DOI: 10.4236/jcdsa.2015.53029
Abstract: Background: Despite the popularity of autologous fat transfer applications, high resorption rates, and consequential volume loss, have been reported. Viable adipocyte content has been defined as a key determinant of fat transfer longevity. Moreover, traces of blood, free oil fat and fibrotic tissue accelerate adipocyte degradation. Objective: To compare the effectiveness of a 1470 nm, radial emitting laser-assisted liposection device to a mechanical liposection device in maintaining adipocyte viability in fat tissue harvests. Methods: Bilateral subcutaneous adipose tissue samples were harvested from ten female patients. Fat was harvested from one side using the LipoLife laser-assisted liposuction device and from the other side with a Byron mechanical aspirator. Samples were visually analyzed and blood:fat ratios and cell viability were determined. Results: Laser-harvested samples separated into two distinct phases, with a negligible blood phase at the bottom (1.1%) and a significant adipose phase at the top (98.9%), containing small, uniform-sized cells, of which 95.7% ± 2.7% proved viable. Mechanically harvested samples separated into blood (18%), adipose (60%) and lipid (22%) phases. The adipose phase contained significant amounts of connective tissue, large adipose tissue fragments, large oil droplets and a mean 79.7% ± 18.3% viable adipocytes. Conclusions: Laser liposuctioning was superior to mechanical liposuctioning, providing both higher cell viability and enhanced sample quality. The 1470 nm diode laser bears the potential of improving long-term clinical outcomes of fat transfer procedures. Improved purity of the harvested sample and heightened preadipocyte content are projected to provide for extended graft longevity.
Review of "The Language of Architecture and Civil Engineering"
Concepción Orna-Montesinos
Ibérica , 2012,
Abstract:
Selective Serotonin Reuptake Inhibitors in Human Pregnancy: To Treat or Not to Treat?
Orna Diav-Citrin,Asher Ornoy
Obstetrics and Gynecology International , 2012, DOI: 10.1155/2012/698947
Abstract: Selective serotonin reuptake inhibitors (SSRIs) are increasingly prescribed during pregnancy. The purpose of the present paper is to summarize and evaluate the current evidence for the risk/benefit analysis of SSRI use in human pregnancy. The literature has been inconsistent. Although most studies have not shown an increase in the overall risk of major malformations, several studies have suggested that SSRIs may be associated with a small increased risk for cardiovascular malformations. Others have noted associations between SSRIs and specific types of rare major malformations. In some studies, there appears to be a small increased risk for miscarriages, which may be associated with the underlying maternal condition. Neonatal effects have been described in up to 30% of neonates exposed to SSRIs late in pregnancy. Persistent pulmonary hypertension of the newborn has also been described with an absolute risk of %. The risk associated with treatment discontinuation, for example, higher frequency of relapse and increased risk of preterm delivery, should also be considered. The overall benefit of treatment seems to outweigh the potential risks. 1. Introduction Selective serotonin reuptake inhibitors (SSRIs) are widely prescribed for the treatment of depression, anxiety, and other disorders. Estimates suggest that the lifetime risk for depression ranges between 10 and 25% with a peak prevalence occurring at childbearing age [1]. According to Evans et al., 9–14% of all pregnant women display signs of depression and/or have illnesses that fulfil research diagnostic criteria for depression [2]. The prevalence rates of depression during pregnancy are 7.4%, 12.8%, and 12.0%, for the first, second, and third trimesters, respectively [3]. A number of SSRIs were introduced since the 1980s, including fluoxetine, fluvoxamine, paroxetine, sertraline, citalopram, and escitalopram. They have better efficacy, tolerability, and safety compared to first-generation antidepressants, for example, tricyclic antidepressants, and are safer in overdose. They exert their effects by inhibiting the presynaptic plasma membrane serotonin transporter. The serotonin transporter mediates the reuptake of serotonin into the presynaptic terminal; neuronal uptake is the primary process by which neurotransmission via 5-hydroxytryptamine (neuronal serotonin) is terminated. Thus, treatment with an SSRI initially blocks reuptake and results in enhanced and prolonged serotonergic neurotransmission. All SSRIs share a similar mechanism of action despite having different chemical structures. The use
Perceived discrimination and health-related quality of life among Arabs and Jews in Israel: A population-based survey
Orna Epel, Giora Kaplan, Mika Moran
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-282
Abstract: A cross sectional random telephone survey was performed in 2006 covering 1,004 Israelis aged 35-65; of these, 404 were non-immigrant Jews, 200 were immigrants from the former Soviet Union and 400 were Arabs, the final number for regression analysis was 952. Respondents were asked about their perceived experiences with discrimination in seven different areas. Quality of life, both physical and mental were measured by the Short Form 12.Perceived discrimination on the basis of origin was highest among immigrants. About 30% of immigrants and 20% of Arabs reported feeling discriminated against in areas such as education and employment. After adjusting for socioeconomic variables, discrimination was associated with poor physical health among non-immigrant Jews (OR = 0.42, CI = 0.19, 0.91) and immigrants (OR = 0.51, CI = 0.27, 0.94), but not among Arabs. Poor mental health was significantly associated with discrimination only among non-immigrant Jews (OR = 0.42, CI = 0.18, 0.96).Perceived discrimination seemed high in both minority populations in Israel (Arabs and immigrants) and needs to be addressed as such. However, discrimination was associated with physical health only among Jews (non-immigrants and immigrants), and not among Arabs. These results may be due to measurement artifacts or may be a true phenomenon, further research is needed to ascertain the results.Discrimination may be based on race/ethnicity, origin, religion, culture, social-class, age and gender: people are distinguished and treated unfavorably by others due to their belonging to a specific group [1]. Discrimination can express itself at the institutional, structural or interpersonal level, depending on politics, policies, and norms of behavior in a specific society [1].Long-term perceived discrimination can lead to the accumulation of stressors over the life course [2]. Such prolonged stress may exert an effect on health [3-6].Studies consistently report the link between perceived discrimination and
What Causes a System to Satisfy a Specification?
Hana Chockler,Joseph Y. Halpern,Orna Kupferman
Computer Science , 2003,
Abstract: Even when a system is proven to be correct with respect to a specification, there is still a question of how complete the specification is, and whether it really covers all the behaviors of the system. Coverage metrics attempt to check which parts of a system are actually relevant for the verification process to succeed. Recent work on coverage in model checking suggests several coverage metrics and algorithms for finding parts of the system that are not covered by the specification. The work has already proven to be effective in practice, detecting design errors that escape early verification efforts in industrial settings. In this paper, we relate a formal definition of causality given by Halpern and Pearl [2001] to coverage. We show that it gives significant insight into unresolved issues regarding the definition of coverage and leads to potentially useful extensions of coverage. In particular, we introduce the notion of responsibility, which assigns to components of a system a quantitative measure of their relevance to the satisfaction of the specification.
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