oalib

OALib Journal期刊

ISSN: 2333-9721

费用：99美元

投稿

时间不限

( 2672 )

( 2022 )

( 2020 )

( 2019 )

自定义范围…

匹配条件： “Alderid; Johansson” ，找到相关结果约1709条。
列表显示的所有文章，均可免费获取
第1页/共1709条
每页显示 条
Negociar la paz: una síntesis de los estudios sobre la resolución negociada de conflictos armados internos
Valencia Agudelo,Germán Darío; Gutiérrez Loaiza,Alderid; Johansson,Sandra;
Estudios Políticos , 2012,
Abstract: following world war i, an academic interest surged worldwide in studying negotiated resolutions to armed conflicts. today, almost a century afterwards, we have a comprehensive and long-term vision of peace agreements that take into account the causes of the conflict, as well as the factors necessary to maintain peace in the post-conflict scenario. the objective of this article is to present a literature review of the evolution of negotiated peace agreements of internal armed conflicts, highlighting the diverse perspectives, models and types of analysis to study these processes. in conclusion, the study presents some final recommendations to increase the probability of success in these negotiated peace processes.
Negociar la paz: una síntesis de los estudios sobre la resolución negociada de conflictos armados internos Negotiating Peace: A Literature Review of Negotiated Resolutions to Internal Armed Conflicts
Germán Darío Valencia Agudelo,Alderid Gutiérrez Loaiza,Sandra Johansson
Estudios Políticos , 2012,
Abstract: Después de la Primera Guerra Mundial en el mundo surgió un interés académico por estudiar la resolución negociada de los conflictos armados. Hoy, casi un siglo después, se cuenta con una visión amplia, integral y de largo plazo sobre los acuerdos de paz, que tiene en cuenta tanto las razones del conflicto como los factores que inciden en el mantenimiento de la paz en el posconflicto. El objetivo de este artículo es presentar una síntesis de la evolución de los estudios sobre la paz negociada, destacando los diversos enfoques, modelos y la forma analítica para estudiar dichos procesos, en especial en los conflictos armados internos. Al final se recogen algunas recomendaciones para aumentar las probabilidades de éxito en dichos procesos de paz. Following World War I, an academic interest surged worldwide in studying negotiated resolutions to armed conflicts. Today, almost a century afterwards, we have a comprehensive and long-term vision of peace agreements that take into account the causes of the conflict, as well as the factors necessary to maintain peace in the post-conflict scenario. The objective of this article is to present a literature review of the evolution of negotiated peace agreements of internal armed conflicts, highlighting the diverse perspectives, models and types of analysis to study these processes. In conclusion, the study presents some final recommendations to increase the probability of success in these negotiated peace processes.
Negociaciones de paz en Colombia, 1982-2009. Un estado del arte
Gutiérrez Loaiza,Alderid;
Estudios Políticos , 2012,
Abstract: colombia has made several peace processes with armed groups operating outside the law. this phenomenon has caused considerable academic output that studying one or more processes. despite this wealth of literature, those studies have not made a classification of them. this article makes a selection of 123 works on peace processes in colombia between 1982 and 2009. under the state of the art methodology, it discussed books, book chapters, journals and documents online, which show the position of authors about the peace process, the approach used, among others characteristics. in addition, the literature has been classified by topics in this article.
Negociaciones de paz en Colombia, 1982-2009. Un estado del arte Peace Negotiations in Colombia, 1982-2009. A State of the Art
Alderid Gutiérrez Loaiza
Estudios Políticos , 2012,
Abstract: En Colombia se han realizado diversos procesos de paz con grupos armados al margen de la ley. Este fenómeno ha provocado una producción académica considerable que estudia uno o varios de los procesos. A pesar de esta riqueza bibliográfica, no existen estudios que realicen una sistematización de ellos. Este artículo hace una selección de 123 trabajos sobre los procesos de paz en Colombia entre 1982 y 2009. Bajo la metodología de estado del arte analiza libros, capítulos de libro, revistas y documentos electrónicos, en los cuales muestra la posición de los autores frente a los procesos de paz, el enfoque que utilizan, entre otras características. Además, se entrega la bibliografía clasificada por temáticas. Colombia has made several peace processes with armed groups operating outside the law. This phenomenon has caused considerable academic output that studying one or more processes. Despite this wealth of literature, those studies have not made a classification of them. This article makes a selection of 123 works on peace processes in Colombia between 1982 and 2009. Under the state of the art methodology, it discussed books, book chapters, journals and documents online, which show the position of authors about the peace process, the approach used, among others characteristics. In addition, the literature has been classified by topics in this article.
Producción y eficiencia estocástica: una aplicación a la industria del calzado en Colombia
Barrientos Marín,Jorge; Tobón,David; Gutiérrez,Alderid;
Lecturas de Economía , 2009,
Abstract: in this paper, we characterize and study the efficiency of a representative set of firms in the leather and footwear sector in bogotá, bucaramanga, cúcuta and the metropolitan area of medellin. this study is based on a survey addressing multiple aspects of production in this industry (inputs, integration of activities, administrative management, innovation, exports, etc). our results suggest that a reasonable percentage of total variance is accounted for by the variance of the inefficiency term. additionally, the sample exhibits diminishing returns to labor. even though many firms seem to be efficient, the leather sector as a whole is not operating near its production possibilities frontier.
Producción y eficiencia estocástica: una aplicación a la industria del calzado en Colombia
Jorge Barrientos Marín,David Tobón,Alderid Gutiérrez
Lecturas de Economía , 2009,
Abstract: In this paper, we characterize and study the efficiency of a representative set of firms in the leather and footwear sector in Bogotá, Bucaramanga, Cúcuta and the Metropolitan Area of Medellin. This study is based on a survey addressing multiple aspects of production in this industry (inputs, integration of activities, administrative management, innovation, exports, etc). Our results suggest that a reasonable percentage of total variance is accounted for by the variance of the inefficiency term. Additionally, the sample exhibits diminishing returns to labor. Even though many firms seem to be efficient, the leather sector as a whole is not operating near its production possibilities frontier.
Application of Pedagogical Perspectives in the Teaching and Training of New Cataract Surgeons—A Literature-Based Essay  [PDF]
Bj？rn Johansson
Open Journal of Ophthalmology (OJOph) , 2013, DOI: 10.4236/ojoph.2013.33015
Abstract:

Cataract is the most common cause of visual impairment that can be effectively treated by surgery and cataract surgery is the most commonly performed surgical procedure in the world. With modern cataract operation techniques, patients expect excellent results. Teaching and training of new surgeons involve both pedagogical and ethical challenges for teachers and trainees, and also may pose a potential risk to patients. This literature-based essay aims to describe how behavioristic, cognitive and conceptual learning perspectives can be recognized during the trainee surgeon’s progress. It also describes how teacher-pupil relationships may vary during the training process. Finally it presents the concept of situational tutorship, where the teacher adapts to the stages that the trainee passes through with increasing experience. Teaching and trainee surgeons who are aware of pedagogical concepts such as teacher-pupil relationships and tutoring strategies may use this knowledge to optimize the learning process. Further research is needed to clarify how using this knowledge may affect the training of new cataract surgeons.

Tailor-Made Electrospun Culture Scaffolds Control Human Neural Progenitor Cell Behavior—Studies on Cellular Migration and Phenotypic Differentiation  [PDF]
Ulrica Englund-Johansson, Eitan Netanyah, Fredrik Johansson
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2017, DOI: 10.4236/jbnb.2017.81001
Abstract: In neuroscience research, cell culture systems are essential experimental platforms. It is of great interest to explore in vivo-like culture substrates. We explored how basic properties of neural cells, nuclei polarization, phenotypic differentiation and distribution/migration, were affected by the culture at poly-L-lactic acid (PLLA) fibrous scaffolds, using a multipotent mitogen-expanded human neural progenitor cell (HNPC) line. HNPCs were seeded, at four different surfaces: two different electrospun PLLA (d = 1.2 - 1.3 μm) substrates (parallel or random aligned fibers), and planar PLL- and PLLA surfaces. Nuclei analysis demonstrated a non-directed cellular migration at planar surfaces and random fibers, different from cultures at aligned fibers where HNPCs were oriented parallel with the fibers. At aligned fibers, HNPCs displayed the same capacity for phenotypic differentiation as after culture on the planar surfaces. However, at random fibers, HNPCs showed a significant lower level of phenotypic differentiation compared with cultures at the planar surfaces. A clear trend towards greater neuronal formation at aligned fibers, compared to cultures at random fibers, was noted. We demonstrated that the topography of in vivo-resembling PLLA scaffolds significantly influences HNPC behavior, proven by different migration behavior, phenotypic differentiation potential and nuclei polarization. This knowledge is useful in future exploration of in vivo-resembling neural cell system using electrospun scaffolds.
Insomnia is associated to depressive symptoms in patients with chronic heart failure  [PDF]
Peter Johansson, Anders Brostr？m
Open Journal of Nursing (OJN) , 2013, DOI: 10.4236/ojn.2013.31005
Abstract:
Introduction: Insomnia and depressive symptoms are common among patients with chronic heart failure (HF). Aim: The aim was to describe the prevalence of insomnia and depressive symptoms, as well as to examine the association between insomnia and depressive symptoms in patients with HF. Method: A crosssectional descriptive study including 212 patients with HF. All patients responded to questionnaires regarding sleeping difficulties (Uppsala Sleep Inventory-Chronic Heart Failure), daytime sleepiness (Epworth Sleepiness Scale) and depressive symptoms (The Mental Health Scale). Results: Patients with depressive symptoms (34%) had, compared to those without, significantly more major complaints of insomnia as indicated by the sub-types; non-restorative sleep (66% vs. 32%, p < 0.0001), difficulty in maintaining sleep (35% vs. 16%, p = 0.003), difficulty in initiating sleep (29% vs. 14%, p = 0.009) and early morning awakenings (25% vs. 10%, p = 0.004). The odds ratio (OR) to suffer from depressive symptoms; were for; non-restorative sleep 5.2 (CI 95%, 2.2 - 12.3), difficulties maintaining sleep 2.5 (CI 95%, 1.2 - 4.9), difficulties in initiating sleep 2.2 (CI 95%, 1.1 - 4.4) and early morning awakenings 2.4 (CI 95%, 1.1 - 5.4). When categorising insomnia into three severity groups, 1) non insomnia, 2) mild insomnia, and 3) severe insomnia, the OR for depressive symptoms for the mild insomnia and severe insomnia group were 2.2 (CI 95%, 1.1 - 4.2) and 7.4 (CI 95%, 2.4 - 22.8) respectively, compared to the non insomnia group. Conclusion: Insomnia is independently associated to depressive symptoms. Assessment of depressive symptoms and insomnia in patients with HF is important since treatment could be targeted to depressive symptoms only and/or to the sleep disturbance.
Site Index Curves for Young Hybrid Larch Growing on Former Farmland in Sweden
Tord Johansson
Forests , 2012, DOI: 10.3390/f3030723
Abstract: Site index (SI) curves for H 20 (dominant height at 20 years total age) were constructed for hybrid larch ( Larix × eurolepis Henry) growing in 26 stands on former farmland in southern and central Sweden (Latitude 56–60° N.). The mean total age of the stands was 23 ± 10 (range 17–49) years; the mean diameter at breast height (ob) was 16 (7–34) cm; the mean height was 14 (8–29) m; and the stands had a mean density of 993 (266–2195) stems ha ？1. A model derived by Cieszewski (2001) performed best for the data. The model explained 99% of the observed variation in height development. No apparent bias across the range of predicted site indices was found. SI was examined in relation to soil types. Multiple samples were available for three soil types: light clay, medium clay and till. There were no significant differences between these soil types with respect to the choice of SI curve.
第1页/共1709条
每页显示 条


Home
Copyright © 2008-2020 Open Access Library. All rights reserved.