974 resultados para International Rice Research Institute


Relevância:

100.00% 100.00%

Publicador:

Resumo:

El propósito de la presente monografía es determinar la relación entre la degradación y navegación en los Grandes Lagos en la noción de seguridad ambiental de Estados Unidos y Canadá en un entorno de interdependencia entre 1995 - 2000. En ese sentido, se busca determinar como los recursos de poder de Canadá y Estados Unidos en la relación degradación-navegación transforma la noción de seguridad ambiental. De este modo, se analiza el concepto de seguridad ambiental desde la navegación, elemento esencial para entender la relación bilateral dentro del sistema de los Grandes Lagos. Esta investigación de tipo cualitativo que responde a las variables de la seguridad ambiental planteadas por Barry Buzan, Thomas Homer-Nixon, y Stephan Libiszewski, y a la teoría de la Interdependencia Compleja por Robert Keohane y Joseph Nye, pretende avanzar hacia la complejización de la dimensión ambiental lejos de la tradicional definición antropocéntrica.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

La presente monografía pretende analizar en qué medida el co-liderazgo sino-ruso de la Organización de Cooperación de Shanghái puede condicionar la hegemonía estadounidense en Asia Central. Esta investigación defiende que los objetivos del co-liderazgo sino-ruso de la OCS - garantizar un orden multipolar del Sistema Internacional; obtener el acceso, control y explotación de los recursos (naturales, minerales e hídricos); disminuir la influencia política y militar de Estados Unidos en dicho pivote geopolítico - evidencian una contraposición al código geopolítico estadounidense en Asia Central, lo cual genera un limitante a su proyecto de hegemonía en la región. Para sustentar lo anterior se utilizan categorías analíticas propias de la Geopolítica de autores como Zbigniew Brzezinski, Saul Cohen y Peter Taylor, las cuales se contrastan con las estrategias de Rusia, China y Estados Unidos en Asia Central.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

La presente monografía tiene por objeto estudiar y analizar las reacciones generadas en Venezuela, Brasil y Perú ante la implementación de la Política de Seguridad Democrática en Colombia, pues el desarrollo de una política de seguridad nacional termina generando en múltiples ocasiones lo que Robert Jervis denomina un Dilema de Seguridad. Así pues se hará necesario demostrar los resultados de dicha política para la seguridad nacional del Estado colombiano para posteriormente evaluar las implicaciones para la seguridad de los Estados vecinos y finalmente estudiar los mecanismos adoptados por estos con el fin de preservar su seguridad y disminuir la posible amenaza representada por Colombia.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Includes bibliography

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Detection canines represent the fastest and most versatile means of illicit material detection. This research endeavor in its most simplistic form is the improvement of detection canines through training, training aids, and calibration. This study focuses on developing a universal calibration compound for which all detection canines, regardless of detection substance, can be tested daily to ensure that they are working with acceptable parameters. Surrogate continuation aids (SCAs) were developed for peroxide based explosives along with the validation of the SCAs already developed within the International Forensic Research Institute (IFRI) prototype surrogate explosives kit. Storage parameters of the SCAs were evaluated to give recommendations to the detection canine community on the best possible training aid storage solution that minimizes the likelihood of contamination. Two commonly used and accepted detection canine imprinting methods were also evaluated for the speed in which the canine is trained and their reliability. As a result of the completion of this study, SCAs have been developed for explosive detection canine use covering: peroxide based explosives, TNT based explosives, nitroglycerin based explosives, tagged explosives, plasticized explosives, and smokeless powders. Through the use of these surrogate continuation aids a more uniform and reliable system of training can be implemented in the field than is currently used today. By examining the storage parameters of the SCAs, an ideal storage system has been developed using three levels of containment for the reduction of possible contamination. The developed calibration compound will ease the growing concerns over the legality and reliability of detection canine use by detailing the daily working parameters of the canine, allowing for Daubert rules of evidence admissibility to be applied. Through canine field testing, it has been shown that the IFRI SCAs outperform other commercially available training aids on the market. Additionally, of the imprinting methods tested, no difference was found in the speed in which the canines are trained or their reliability to detect illicit materials. Therefore, if the recommendations discovered in this study are followed, the detection canine community will greatly benefit through the use of scientifically validated training techniques and training aids.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

SmartWater is a chemical taggant used as a crime deterrent. The chemical taggant is a colorless liquid that fluoresces yellow under ultra-violet (UV) light and contains distinctive, identifiable and traceable elemental composition. For instance, upon a break and entry scenario, the burglar is sprayed with a solution that has an elemental signature custom-made to a specific location. The residues of this taggant persist on skin and other objects and can be easily recovered for further analysis. The product has been effectively used in Europe as a crime deterrent and has been recently introduced in South Florida. In 2014, Fourt Lauderdale Police Department reported the use of SmartWater products with a reduction in burglaries of 14% [1]. The International Forensic Research Institute (IFRI) at FIU validated the scientific foundation of the methods of recovery and analysis of these chemical tagging systems using LA-ICP-MS. Analytical figures of merit of the method such as precision, accuracy, limits of detection, linearity and selectivity are reported in this study. Moreover, blind samples were analyzed by LA-ICP-MS to compare the chemical signatures to the company’s database and evaluate error rates and the accuracy of the method. This study demonstrated that LA-ICP-MS could be used to effectively detect these traceable taggants to assist law enforcement agencies in the United States with cases involving transfer of these forensic coding systems.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

People’s ability to change their social and economic circumstances may be constrained by various forms of social, cultural and political domination. Thus to consider a social actor’s particular lifeworld in which the research is embedded assists in the understanding of how and why different trajectories of change occur or are hindered and how those changes fundamentally affect livelihood opportunities and constraints. In seeking to fulfill this condition this thesis adopted an actor-oriented approach to the study of rural livelihoods. A comprehensive livelihoods study requires grasping how social reality is being historically constituted. That means to understand how the interaction of modes of production and symbolical reproduction produces the socio-space. Research is here integrated to action through the facilitation of farmer groups. The overall aim of the groups was to prompt agency, as essential conditions to build more resilient livelihoods. The smallholder farmers in the Mabalane District of Mozambique are located in a remote semi-arid area. Their livelihoods customarily depend at least as much on livestock as on (mostly) rain-fed food crops. Increased climate variability exerts pressure on the already vulnerable production system. An extensive 10-month duration of participant observation divided into 3 periods of fieldwork structured the situated multi-method approach that drew on a set of interview categories. The actor-oriented appraisal of livelihoods worked in building a mutually shared definition of the situation. This reflection process was taken up by the facilitation of the farmer groups, one in Mabomo and one in Mungazi, which used an inquiry iteratively combining individual interviews and facilitated group meetings. Integration of action and reflection was fundamental for group constitution as spaces for communicative action. They needed to be self-organized and to achieve understanding intersubjectively, as well as to base action on cooperation and coordination. Results from this approach focus on how learning as collaboratively generated was enabled, or at times hindered, in (a) selecting meaningful options to test; (b) in developing mechanisms for group functioning; and (c) in learning from steering the testing of options. The study of livelihoods looked at how the different assets composing livelihoods are intertwined and how the increased severity of dry spells is contributing to escalated food insecurity. The reorganization of the social space, as households moved from scattered homesteads to form settlements, further exerts pressure on the already scarce natural resource-based livelihoods. Moreover, this process disrupted a normative base substantiating the way that the use of resources is governed. Hence, actual livelihood strategies and response mechanisms turn to diversification through income-generating activities that further increase pressure on the resource-base in a rather unsustainable way. These response mechanisms are, for example, the increase in small-livestock keeping, which has easier conversion to cash, and charcoal production. The latter results in ever more precarious living and working conditions. In the majority of the cases such responses are short-term and reduce future opportunities in a downward spiral of continuously decreasing assets. Thus, by indicating the failure of institutions in the mediation of smallholders’ adaptive capabilities, the livelihood assessment in Mabomo and Mungazi sheds light on the complex underlying structure of present day social vulnerability, linking the macro-context to the actual situation. To assist in breaking this state of “subordination”, shaped by historical processes, weak institutions and food insecurity, the chosen approach to facilitation of farmer groups puts farmer knowledge at the center of an evolving process of intersubjective co-construction of knowledge towards emancipation.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The objective of this study was to study leukocytes characteristics of Acipenseridae of southern Caspian Sea stained by cytochemical stains in order to classify these cells more accurately. The samples were taken from Sturgeon propagation centers and International Sturgeon Research Institute in the north part of Iran. 10 fish were selected randomly from each age group (fingerling, 1, 2, 3 to 11 years) and blood samples were taken from caudal vein using syringes with no anticoagulant. Blood smears were prepared immediately and fixed by methanol. The smears then stained using cytochemical staining according to the Sigma-Aldrich instructions. Neutrophils were positive for Sudan Black-B(SBB), Periodic acid-Schiff (PAS) and Peroxidase (PER) but negative for choloroacetate esterase (CAE). Eosinophi is stained positively for PER and SBB and weakly for PAS, acid phosphatase (ACP), CAE and a-naphthyl acetate esterase (a-NAE). Basophil was absent in the studied blood smears. Lymphocytes were positive for ACP but weak for PAS, CAE and a-NAE. Monocytes stained positively for B-glucoronidase (BG) in Acipenser persicus 5 and 11 years group, in Acipenser stellatus 1 and 2 years group, in Acipenser gueldenstaedtii 1 year group, in Acipenser nudiventris 9 year and in Huso huso 7 year group and stained weakly for a-NAE.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Detection canines represent the fastest and most versatile means of illicit material detection. This research endeavor in its most simplistic form is the improvement of detection canines through training, training aids, and calibration. This study focuses on developing a universal calibration compound for which all detection canines, regardless of detection substance, can be tested daily to ensure that they are working with acceptable parameters. Surrogate continuation aids (SCAs) were developed for peroxide based explosives along with the validation of the SCAs already developed within the International Forensic Research Institute (IFRI) prototype surrogate explosives kit. Storage parameters of the SCAs were evaluated to give recommendations to the detection canine community on the best possible training aid storage solution that minimizes the likelihood of contamination. Two commonly used and accepted detection canine imprinting methods were also evaluated for the speed in which the canine is trained and their reliability. As a result of the completion of this study, SCAs have been developed for explosive detection canine use covering: peroxide based explosives, TNT based explosives, nitroglycerin based explosives, tagged explosives, plasticized explosives, and smokeless powders. Through the use of these surrogate continuation aids a more uniform and reliable system of training can be implemented in the field than is currently used today. By examining the storage parameters of the SCAs, an ideal storage system has been developed using three levels of containment for the reduction of possible contamination. The developed calibration compound will ease the growing concerns over the legality and reliability of detection canine use by detailing the daily working parameters of the canine, allowing for Daubert rules of evidence admissibility to be applied. Through canine field testing, it has been shown that the IFRI SCAs outperform other commercially available training aids on the market. Additionally, of the imprinting methods tested, no difference was found in the speed in which the canines are trained or their reliability to detect illicit materials. Therefore, if the recommendations discovered in this study are followed, the detection canine community will greatly benefit through the use of scientifically validated training techniques and training aids.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

"La seguridad ambiental es un concepto complejo que puede ser analizado desde varios enfoques. La conexión entre degradación ambiental, escasez de recursos, poco desarrollo económico e inestabilidad política puede generar rápidamente conflictos llamados ambientales, terrorismo ecológico y guerras verdes. Sin embargo, en la mayoría de las investigaciones sobre degradación ambiental y conflictos armados no se tienen en cuenta los factores desarrollo económico y régimen político, pues se considera que los problemas ambientales pueden, por sí solos, conducir a situaciones conflictivas nacionales, regionales e internacionales. En este contexto, los propósitos de este artículo son plantear las diferentes tendencias ideológicas de la seguridad ambiental, definir el contenido y las causas de los conflictos ambientales y proponer un marco analítico complementario que incluya las variables políticas y económicas como generadoras de conflictos ambientales y de conflictos armados de alta intensidad. Al final, se propone una agenda de investigación en materia de seguridad ambiental para Colombia."

Relevância:

100.00% 100.00%

Publicador:

Resumo:

¿Qué tienen por decir mujeres excombatientes de grupos insurgentes (guerrillas como las FARC y el EPL) y de las Autodefensas Unidas de Colombia acerca de su proceso de desmovilización y reintegración? Este reportaje busca responder esa pregunta por medio de la historia de vida de Camila, Valentina y Blanca, tres mujeres que pertenecieron a grupos armados ilegales y que ahora luchan por reconstruir su proyecto de vida y le apuestan a la construcción de la paz desde las luchas cotidianas que tiene que afrontar.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Con el fin de la Segunda Guerra Mundial y el escenario que planteaba la Guerra Fría, la manera de entender y explicar la seguridad en la comunidad internacional se amplió, y pasó de ser concebida únicamente en términos políticos y militares, a incluir aspectos como el medio ambiente, la economía y la sociedad. Por esta razón el concepto de seguridad se complejizó dando paso a la construcción de distintas definiciones y debates alrededor de la ampliación de la agenda de seguridad y los temas que en ella se debían tratar. Así pues el fin principal del presente trabajo es el análisis de un fenómeno socialmente relevante en el marco de las relaciones internacionales como lo es la configuración de seguridad, a partir de intervenciones de terceros actores que involucran poblaciones afectadas como en el caso somalí, la cual enfrentó una situación de crisis como producto de la emergencia de seguridad que se produce en el año 1991 con la expulsión de Siad Barre del poder. Su importancia radica en la reivindicación de la trascendencia tanto de los derechos humanos, como de la relevancia del papel de las organizaciones internacionales y de los Estados más poderosos del Sistema Internacional, en la protección de esos derechos y de las comunidades vulnerables que conforman dicho sistema.