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197 results on '"Samet, H."'

1. Nonmonotonic fracture behavior of polymer nanocomposites

Author

de Castro, Janaina G., Zargar, Rojman, Habibi, Mehdi, Varol, Samet H., Parekh, Sapun H., Hosseinkhani, Babak, Adda-Bedia, Mokhtar, and Bonn, Daniel

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

Polymer composite materials are widely used for their exceptional mechanical properties, notably their ability to resist large deformations. Here we examine the failure stress and strain of rubbers reinforced by varying amounts of nano-sized silica particles. We find that small amounts of silica increase the fracture stress and strain, but too much filler makes the material become brittle and consequently fracture happens at small deformations. We thus find that as a function of the amount of filler there is an optimum in the breaking resistance at intermediate filler concentrations. We use a modified Griffith theory to establish a direct relation between the material properties and the fracture behavior that agrees with the experiment.

Published
2015

2. Static Properties of Trapped Bose Gases at Finite Temperature: I. Thomas- Fermi Limit

Author

Benarous, M. and Samet, H. Chachou

Subjects
Condensed Matter - Statistical Mechanics
Abstract

We rely on a variational approach to derive a set of equations governing a trapped self-interacting Bose gas at finite temperature. In this work, we analyze the static situation both at zero and finite temperature in the Thomas-Fermi limit. We derive simple analytic expressions for the condensate properties at finite temperature. The noncondensate and anomalous density profiles are also analyzed in terms of the condensate fraction. The results are quite encouraging owing to the simplicity of the formalism., Comment: 11 pages, 9 figures, revised version

Published
2006

6. Determination of the association of GHR/AluI gene polymorphisms with milk yield traits in Holstein and Jersey cattle raised in Turkey

Author

Cobanoglu, Ozden, Kul, Ertugrul, Gurcan, Eser K., Abaci, Samet H., Cankaya, Soner, Ziraat Fakültesi, and Ertuğrul Kul / 0000-0003-4961-5607

Subjects
Growth-Hormone-Receptor, Performance, Science, Variants, food and beverages, Expression, Agriculture, SF1-1100, Dgat1, Animal culture, Meat Production Traits, Impact, fluids and secretions, QL1-991, Ghr Gene, 5'-Noncoding Region, Igf-I, Original Study, Zoology
Abstract

This research was carried out to determine the effect of a specific single nucleotide polymorphism (SNP) region in exon 10 of the growth hormone receptor (GHR) gene on milk production traits in Jersey and Holstein cows raised in Turkey. Milk samples were recorded as a test day milk yield (TDMY) and an adjusted based 305 d milk yield (305-DMY). Also, milk component traits were detected. Based on the scope of this study, a total of 748 dairy cows, including 305 Holsteins raised in the Marmara Region and 163 Holstein and 280 Jersey raised in the Black Sea Region, were genotyped for the GHR gene using the RFLP-PCR technique. Jersey cows carrying the GG genotype (5.24 %) were associated with higher fat content (P). Jersey cows with GG and AG also had a higher protein content (3.44 % and 3.38 %, respectively) (P). Similarly, the protein content was the highest in Holstein cows with the GG genotype (3.46 %) (P), whereas Holstein cows having AA genotypes displayed higher TDMY (24.64 kg/d) (P) and 305-DMY (8472.4 kg) (P). The estimated increase in milk protein and fat contents due to the G allele was 0.07 % and 0.22 % in the Jersey breed, respectively. On the other hand, allele A was highly related to an increase in protein yield and 305-DMY of 0.04 and about 675 kg in the Holstein breed, respectively. The GHR gene should be considered as a potential candidate gene in marker-assisted selection programs to improve the performance of milk and related traits in Turkey dairy cattle populations.

Published
2021

8. Managing Trajectories and Interactions during a Pandemic: A Trajectory Similarity-based Approach (Demo Paper)

Author

Buckland, E, Tanin, E, Geard, N, Zachreson, C, Xie, H, Samet, H, Buckland, E, Tanin, E, Geard, N, Zachreson, C, Xie, H, and Samet, H

Abstract

COVID-19 has brought about substantial social, economic and health related burdens, motivating different control measures from policy makers worldwide. Contact tracing plays a pivotal role in the COVID-19 era. However, contact tracing is by nature entirely retrospective: it can only identify contacts of known or suspected cases. Our proposed system is prospective, aiming to 'create' networks that will ultimately make contact tracing and pandemic management easier. As contact tracing seeks to reconstruct the underlying interaction network, we can improve the process by reducing the complexity of contact network structure; we introduce a method for reducing contact network complexity through strategic scheduling. The method functions through pairwise comparison of individual trajectories in a coordinate space of activities, locations, and time intervals. We demonstrate the method through a simulated scenario where individuals (students) register for activities using a mobile application in a campus. The application then applies our algorithm to provide individuals with schedules that reduce the complexity of the overall network, without compromising individual privacy.

Published
2021

12. Querying Recurrent Convoys over Trajectory Data

Author

Yadamjav, ME, Bao, Z, Zheng, B, Choudhury, FM, Samet, H, Yadamjav, ME, Bao, Z, Zheng, B, Choudhury, FM, and Samet, H

Abstract

Moving objects equipped with location-positioning devices continuously generate a large amount of spatio-Temporal trajectory data. An interesting finding over a trajectory stream is a group of objects that are travelling together for a certain period of time. We observe that existing studies on mining co-moving objects do not consider an important correlation between co-moving objects, which is the reoccurrence of the co-moving pattern. In this study, we propose the problem of finding recurrent co-moving patterns from streaming trajectories, enabling us to discover recent co-moving patterns that are repeated within a given time period. Experimental results on real-life trajectory data verify the efficiency and effectiveness of our method.

Published
2020

16. Effect of Gaussian doping profile on the performance of a thin film polycrystalline solar cell

Author

Ouali A., Ben Amar M., Samet H., and Kolsi S.

Subjects
Physics, QC1-999
Abstract

A two-dimensional (2D) analytical model based on the Green’s function method is applied to an n+-p thin film polycrystalline solar cell that allows us to calculate the conversion efficiency. This model considers the effective Gaussian doping profile in the p region in order to improve cell efficiency. The dependence of mobility and lifetime on grain doping is also investigated. This model is implemented through a simulation program in order to optimize conversion efficiency while varying thickness and doping profile in the base region of the cell. Compared with n+-p standard structure, our proposed structure shows a 43% improvement in conversion efficiency for a polycrystalline solar cell.

Published
2012
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17. Valeur de l’échocardiographie dans l’évaluation, le suivi, et le pronostic de patients atteints d’hypertension artérielle pulmonaire : résultats de l’étude multicentrique prospective EFORT-Echo

Author

Miola, C., primary, Renard, S., additional, Resseguier, N., additional, Haentjens, J., additional, Michel, N., additional, Selton Suty, C., additional, Chabanne, C., additional, De Groote, P., additional, Samet, H., additional, Dauphin, C., additional, Sportouch, C., additional, Saunier, C., additional, Orabona, M., additional, Sitbon, O., additional, and Habib, G., additional

Published
2019
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18. Determination of the association of GHR / AluI gene polymorphisms with milk yield traits in Holstein and Jersey cattle raised in Turkey.

Author

Cobanoglu, Ozden, Kul, Ertugrul, Gurcan, Eser K., Abaci, Samet H., and Cankaya, Soner

Subjects
JERSEY cattle, MILK yield, GENETIC polymorphisms, SOMATOTROPIN receptors, FAT content of milk, HOLSTEIN-Friesian cattle, CATTLE genetics
Abstract

This research was carried out to determine the effect of a specific single nucleotide polymorphism (SNP) region in exon 10 of the growth hormone receptor (GHR) gene on milk production traits in Jersey and Holstein cows raised in Turkey. Milk samples were recorded as a test day milk yield (TDMY) and an adjusted based 305 d milk yield (305-DMY). Also, milk component traits were detected. Based on the scope of this study, a total of 748 dairy cows, including 305 Holsteins raised in the Marmara Region and 163 Holstein and 280 Jersey raised in the Black Sea Region, were genotyped for the GHR gene using the RFLP-PCR technique. Jersey cows carrying the GG genotype (5.24 %) were associated with higher fat content (P<0.05). Jersey cows with GG and AG also had a higher protein content (3.44 % and 3.38 %, respectively) (P<0.05). Similarly, the protein content was the highest in Holstein cows with the GG genotype (3.46 %) (P<0.01), whereas Holstein cows having AA genotypes displayed higher TDMY (24.64 kg/d) (P<0.05) and 305-DMY (8472.4 kg) (P<0.01). The estimated increase in milk protein and fat contents due to the G allele was 0.07 % and 0.22 % in the Jersey breed, respectively. On the other hand, allele A was highly related to an increase in protein yield and 305-DMY of 0.04 and about 675 kg in the Holstein breed, respectively. The GHR gene should be considered as a potential candidate gene in marker-assisted selection programs to improve the performance of milk and related traits in Turkey dairy cattle populations. [ABSTRACT FROM AUTHOR]

Published
2021
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22. P1294Evaluation of right atrium mechanics and relation with loading conditions by speckle tracking echocardiographyP1295Late detection of left ventricular dysfunction using 2D and 3D speckle-tracking in patients with history of non-severe acute myocarditisP1296The impact of abnormal circadian BP profile on left atrial function by 2D speckle tracking echocardiography and its effect on functional capacity in hypertensive patientsP1297Right heart echocardiographic parameters alterations in asymptomatic breast cancer patients during chemotherapyP1299The Impact of myocardial deformation imaging for assessment of long-life prognosis in young patients with Kawasaki diseasesP1300Early detection of lv systolic dysfunction in asymptomatic patients with rheumatoid arthritis using global longitudinal strain assessmentP1301Cardiovascular risk assessment in haemodialysis patients with preserved left ventricular ejection fraction and left ventricular hypertrophyP1302Echocardiographic determinants of the functional capacity in systemic sclerosis: role of the right heartP1303 Speckle tracking echocardiography assessment of left atrial strain in hypertensive patientsP1304Comparison of global longitudinal strain in rheumatic mitral regurgitation and degenerative mitral regurgitation : does etiology affect?P1305Specific correlations between aortic stiffness and three-dimensional speckle-tracking echocardiography-derived segmental left ventricular strainsP1306Three-dimensional right ventricular strain analysis for the dependency of preload changes

Author

Unlu, S., primary, Caspar, T., primary, Ahmed, T., primary, Abdar Esfahani, M., primary, Marinov, R., primary, Mohamed, LAYLA, primary, Chiu, D Y Y, primary, Nogradi, AB., primary, Elremisy, D R A, primary, Mefriyanni, M., primary, Nemes, A., primary, Park, CS., primary, Fichot, M., additional, Petit-Eisenmann, H., additional, Samet, H., additional, Trinh, A., additional, Talha, S., additional, Jesel, L., additional, El Ghannudi, S., additional, Morel, O., additional, Ohlmann, P., additional, Naiem, M., additional, Mazen, A., additional, Samy, E., additional, Hristova, K., additional, Telcharova, A., additional, Maghraby, HM., additional, Mohamed, RM., additional, Green, D., additional, Hughes, J., additional, Sinha, S., additional, Kalra, PA., additional, Abidin, N., additional, Porpaczy, A., additional, Porcsa, L., additional, Minier, T., additional, Czirjak, L., additional, Komocsi, A., additional, Faludi, R., additional, Issa, LM., additional, Deyab, RH., additional, Boghdady, YM., additional, Soesanto, AM., additional, Kalapos, A., additional, Domsik, P., additional, Oszlanczi, M., additional, Orosz, A., additional, Torok, L., additional, Balogh, L., additional, Forster, T., additional, Lengyel, C., additional, Jeong, MH., additional, Ahn, HS., additional, Cho, JS., additional, and Youn, HJ., additional

Published
2016
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25. Effect of Third-Order Dispersion on the Solitonic Solutions of the Schrödinger Equations with Cubic Nonlinearity

Author

Samet, H. Chachou, Benarous, M., Asad-uz-zaman, M., and Al Khawaja, U.

Subjects
Article Subject, Nonlinear Sciences::Pattern Formation and Solitons
Abstract

We derive the solitonic solution of the nonlinear Schrödinger equation with cubic nonlinearity, complex potentials, and time-dependent coefficients using the Darboux transformation. We establish the integrability condition for the most general nonlinear Schrödinger equation with cubic nonlinearity and discuss the effect of the coefficients of the higher-order terms in the solitonic solution. We find that the third-order dispersion term can be used to control the soliton motion without the need for an external potential. We discuss the integrability conditions and find the solitonic solution of some of the well-known nonlinear Schrödinger equations with cubic nonlinearity and time-dependent coefficients. We also investigate the higher-order nonlinear Schrödinger equation with cubic and quintic nonlinearities.

Published
2014
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28. An ontology framework for quality of geographic information services

Author

Onchaga, R., Morales Guarin, J.M., Widya, I., Nieuwenhuis, L.J.M., Aref, W.G., Mokbel, F., Samet, H., Schneider, M., Shahabi, C., Wolfson, O., Department of Urban and Regional Planning and Geo-Information Management, Faculty of Geo-Information Science and Earth Observation, Department of Geo-information Processing, and UT-I-ITC-STAMP

Subjects
GIP, Knowledge management, business.industry, Computer science, media_common.quotation_subject, Quality of service, Information quality, PGM, Ontology (information science), Semantics, ADLIB-ART-1597, Data quality, Information system, Upper ontology, Quality (business), business, media_common
Abstract

In recent years, there has been much research on ontologies for geographic information (GI) services. But to date, focus has been on semantics of data and operations. Much less attention has been given to semantics of quality of GI services. In addressing this gap, this paper proposes an ontology framework for quality of GI services. The framework has an upper ontology, two primary domain ontologies and potentially many application ontologies. The ontologies provide concepts for unambiguously defining and reasoning about quality of GI services. We see the main strength of the framework as being its holistic view of quality; it integrates data quality and quality of service (QoS) which hitherto have been defined separately. Besides, the framework builds on established data quality and QoS concepts which guarantees its relevance and acceptance.

Published
2008

47. Artificial intelligence programming languages for computer aided manufacturing

Author

Rieger, C, Samet, H, and Rosenberg, J

Subjects
Computer Programming And Software
Abstract

Eight Artificial Intelligence programming languages (SAIL, LISP, MICROPLANNER, CONNIVER, MLISP, POP-2, AL, and QLISP) are presented and surveyed, with examples of their use in an automated shop environment. Control structures are compared, and distinctive features of each language are highlighted. A simple programming task is used to illustrate programs in SAIL, LISP, MICROPLANNER, and CONNIVER. The report assumes reader knowledge of programming concepts, but not necessarily of the languages surveyed.

Published
1979

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