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Search Results: 1 - 10 of 9001 matches for " Alejandro Sanin "
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Human Capital Management, Organizational Climate, Commitment and Performance in Latin America  [PDF]
Emmanuel Silvestre, Fernando Toro, Alejandro Sanin
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.91003
Abstract: The purpose of the research was to confirm the validity of an analytical model originally proposed by Kopelman, Brief and Guzzo (1990) in 4 countries of the Latin American region. Cincel, a top organizational research institution from Colombia, adapted the original model and coordinated this research. The objectives of the research included to make various comparisons and relationships among some productive sectors and countries of the region. Cincel’s analytical model implies that the Human Capital Management Practices (HCMP) can predict the Perceived Organizational Performance (POP), but also that this relationship is moderated by the variables Organizational Climate (OC) and, at minimum, 3 types of commitment of the staff: Affective Commitment (AC), Continuity Commitment (CC) and Normative Commitment (NC). The research includes a total sample of 4491 participants from Chile (CL), N = 799, Colombia (CO), N = 2083, Mexico (MX), N = 874, and the Dominican Republic (DO), N = 735. The productive sectors included were Industry, Services and Education. The instruments for the data gathering were supplied by Cincel. The questionnaires were administered via Internet by Cincel. The moderation analysis was done with the regression procedure of the SPSS. In general, the moderation analysis validated the model, with important differences for the included sectors. HCMP and OC were effective in predicting POP in every sector. AC was a good predictor of POP in the Services and Education sectors, while CC could only predict POP in the Education sector and the NC was a good predictor of POP only in the Industry sector. The interaction between OC and CN was able to predict POP in both the Industry and Services sectors. Furthermore, we found significant differences, confirmed by ANOVAS, among the evaluations in the different countries. CO performed better in the evaluations in almost every factor for each sector. DO was second in the evaluations of the Industry and Services sectors. MX was second in the Education sector, and CL was third in the Services sector. The human capital managers from each country should take in account the fact that the predictors of performance and the staff commitment are different for each country and for the different productive sectors.
Depresión y toxicomanía
Alvaro Sanin
Revista Latinoamericana de Psicología , 1984,
Abstract:
Effect of solution physical chemistry on the rheological properties of activated sludge
Dilek F Sanin
Water SA , 2002,
Abstract: Knowledge on rheological properties of sludge is important for the design of pumping and transport facilities and as a tool in process control during treatment. Concentrated activated sludge is known to behave as a non-Newtonian material. The contribution to non- Newtonian behaviour is believed to originate from the colloidal properties of solids more than from the molecular properties of the suspension. Considering that the colloidal properties of sludge depend on factors like pH, conductivity, solids concentration and flocculation properties, this study examines the effects of these variables on the rheology of activated sludge. Results show that the rheograms obtained fit best to a power law model indicating that the flow of activated sludge can best be expressed by the pseudoplastic flow model. It is also observed that the apparent viscosity increases sharply with the increase of solids concentration. From the pH values studied, the one that causes the lowest viscosity is the pH 5.5. As the pH increases, the viscosity measured increases considerably. This makes sense considering that the isoelectric point of bacteria is at pH 2-4. Conductivity is also found to affect the viscosity greatly; such that as the conductivity increases, the apparent viscosity decreases. Finally, experimental results reveal that the presence of extracellular polymers and the flocculated nature of activated sludge affect its viscosity. WaterSA Vol.28(2) 2002: 207-212
Imitation Games" und politischer Diskurs Imitation Games and Political Discourse Juegos de simulación" y discurso político
Francisco Gutierrez Sanin
Forum : Qualitative Social Research , 2001,
Abstract: In diesem Artikel gehe ich der Frage nach, inwieweit Turings Konzept der "Imitation Games" sich für die Analyse politischer Diskurse heranziehen l sst. Damit verbindet sich die theoretische Frage des Identit tsabgleichs. Zugleich stellt sich auch eine methodologische Frage: Ist es m glich, allein aufgrund internaler Kriterien zwischen den Diskursen politisch Handelnder zu unterscheiden, die verschiedenen Kategorien angeh ren? Die Suche nach Antworten auf diese theoretischen und methodologischen Fragen beleuchtet zentrale Gemeinsamkeiten zwischen qualitativer und quantitativer Forschung. URN: urn:nbn:de:0114-fqs0101103 In this article, I examine the possibility of using TURING's concept of "imitation games" to analyze political discourse. This poses the theoretical question of identity matching. It also poses a methodological question: Is it possible to distinguish, using only internal criteria, the political discourse of political actors that belong to two distinct categories? The effort to answer these theoretical and methodological questions highlights important common motives in quantitative and qualitative research. URN: urn:nbn:de:0114-fqs0101103 En el presente artículo, examino la posibilidad de usar el concepto de "Juegos de Imitación" de Turing para analizar el discurso político. Esto propone una pregunta de orden teórico sobre la congruencia de identidad. También propone una pregunta metodológica: es posible distinguir, usando sólo criterios internos, el discurso político de actores que pertenecen a dos categorías diferentes? El esfuerzo por responder a estas preguntas, metodológica y teóricamente, pone de manifiesto dimensiones comunes a la investigación cualitativa y la cuantitativa. URN: urn:nbn:de:0114-fqs0101103
Cast Intermetallic Alloys and Composites Based on Them by Combined Centrifugal Casting—SHS Process  [PDF]
Vladimir Sanin,Dmitry Andreev,Denis Ikornikov,Vldimir Yukhvid
Open Journal of Metal (OJMetal) , 2013, DOI: 10.4236/ojmetal.2013.32a2003
Abstract: This work aims to establish a scientific and engineering background in the production of cast multicomponent alloys and metalmartix composite (MMCs) via Self-Propagating High Temperature Synthesis (SHS, combustion synthesis) which is a novel process technique regarding fast and low-cost production ability. We carried out the search for reactive systems and process parameters that would ensure preparation of cast multicomponent materials in a single process. The principles and methods of the SHS thermite-type reaction processes have been investigated under high-gravity values applying loads up to 1000 g with special centrifuge set-up. In this way we expected to improve the yield of target product, remove gaseous byproducts, diminish the grain size in the product, and make product composition more uniform. The obtained results can be expected to make a theoretical background for industrial-scale manufacturing of heat-resistant intermetallic alloys, master alloys, catalysts, MMCs etc.
Cast Intermetallic Alloys and Composites Based on Them by Combined Centrifugal Casting—SHS Process  [PDF]
Vladimir Sanin, Dmitry Andreev, Denis Ikornikov, Vldimir Yukhvid
Open Journal of Metal (OJMetal) , 2013, DOI: 10.4236/ojmetal.2013.32A2003
Abstract: This work aims to establish a scientific and engineering background in the production of cast multicomponent alloys and metalmartix composite (MMCs) via Self-Propagating High Temperature Synthesis (SHS, combustion synthesis) which is a novel process technique regarding fast and low-cost production ability. We carried out the search for reactive systems and process parameters that would ensure preparation of cast multicomponent materials in a single process. The principles and methods of the SHS thermite-type reaction processes have been investigated under high-gravity values applying loads up to 1000 g with special centrifuge set-up. In this way we expected to improve the yield of target product, remove gaseous byproducts, diminish the grain size in the product, and make product composition more uniform. The obtained results can be expected to make a theoretical background for industrial-scale manufacturing of heat-resistant intermetallic alloys, master alloys, catalysts, MMCs etc.
Comentarios sobre el artículo “Hernia diafragmática y estenosis congénita de la tráquea: reporte de un caso” Comments on “diaphragmatic hernia and congenital tracheal stenosis: a case report”
José Enrique Sanin-Blair
Revista Colombiana de Obstetricia y Ginecología , 2006,
Abstract:
Shadow Detection: A Survey and Comparative Evaluation of Recent Methods
Andres Sanin,Conrad Sanderson,Brian C. Lovell
Computer Science , 2013, DOI: 10.1016/j.patcog.2011.10.001
Abstract: This paper presents a survey and a comparative evaluation of recent techniques for moving cast shadow detection. We identify shadow removal as a critical step for improving object detection and tracking. The survey covers methods published during the last decade, and places them in a feature-based taxonomy comprised of four categories: chromacity, physical, geometry and textures. A selection of prominent methods across the categories is compared in terms of quantitative performance measures (shadow detection and discrimination rates, colour desaturation) as well as qualitative observations. Furthermore, we propose the use of tracking performance as an unbiased approach for determining the practical usefulness of shadow detection methods. The evaluation indicates that all shadow detection approaches make different contributions and all have individual strength and weaknesses. Out of the selected methods, the geometry-based technique has strict assumptions and is not generalisable to various environments, but it is a straightforward choice when the objects of interest are easy to model and their shadows have different orientation. The chromacity based method is the fastest to implement and run, but it is sensitive to noise and less effective in low saturated scenes. The physical method improves upon the accuracy of the chromacity method by adapting to local shadow models, but fails when the spectral properties of the objects are similar to that of the background. The small-region texture based method is especially robust for pixels whose neighbourhood is textured, but may take longer to implement and is the most computationally expensive. The large-region texture based method produces the most accurate results, but has a significant computational load due to its multiple processing steps.
Preparation of α,β-Unsaturated Ketones Bearing a Trifluoromethyl Group and Their Application in Organic Synthesis
Valentine G. Nenajdenko,Andrei V. Sanin,Elizabeth S. Balenkova
Molecules , 1997, DOI: 10.3390/21200186
Abstract: The approaches to the synthesis of α,β-unsaturated CF3-containing ketones and their use in organic chemistry are reviewed. The synthetic applications of these ketones are discussed. The formation of 4-, 5-, 6- and 7-membered heterocycles bearing a CF3 group based on reactions of α,β-unsaturated CF3-containing ketones with different nucleophiles are discussed.
Spatio-Temporal Covariance Descriptors for Action and Gesture Recognition
Andres Sanin,Conrad Sanderson,Mehrtash T. Harandi,Brian C. Lovell
Computer Science , 2013, DOI: 10.1109/WACV.2013.6475006
Abstract: We propose a new action and gesture recognition method based on spatio-temporal covariance descriptors and a weighted Riemannian locality preserving projection approach that takes into account the curved space formed by the descriptors. The weighted projection is then exploited during boosting to create a final multiclass classification algorithm that employs the most useful spatio-temporal regions. We also show how the descriptors can be computed quickly through the use of integral video representations. Experiments on the UCF sport, CK+ facial expression and Cambridge hand gesture datasets indicate superior performance of the proposed method compared to several recent state-of-the-art techniques. The proposed method is robust and does not require additional processing of the videos, such as foreground detection, interest-point detection or tracking.
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