1,578 research outputs found
Role of Culture in Cultivating a Sense of Self with Responsibility Towards the Community
Given the fact that education has not moved beyond the factory models of the 19th century, building strong relationships between the classroom and the home environment is necessary for melding home values with school practices so that students could see how school builds upon their home culture. This senior capstone research project examines the role of culture in cultivating a sense of self and responsibility towards the community using relevant literature, surveys with CSUMB teaching and learning community, a survey with educators, and interviews with specific religious individuals. Results reveal that culture indeed influences the sense of self-identity, the sense of responsibility towards the community one belongs to, or currently resides
Smallholder Farmers Spend Credit Primarily on Food: Gender Differences and Food Security Implications in a Changing Climate
In many low-income nations agriculture is used as the primary source of income, which in the face of a changing climate, is known to be at considerable risk for the smallholder farmers that rely on it. Financial resources may enable smallholder farmers to implement adaptation practices and diversify income and investments, which has the potential to affect household income and food security. Here we explore relationships between access to different types of financial resources among male and female-headed households and women vs. men, use of financial resources, and its relationship to food security. We use data from the CGIAR Climate Change, Agriculture, and Food Security (CCAFS) program from four sites including Nyando (Western Kenya) and Wote (Eastern Kenya), Rakai (Uganda) and Kaffrine (Senegal), to represent major farming systems and agro-ecological zones across Africa. We find that male and female-headed households do not attempt to borrow financial resources in significantly different quantities; however, female-headed households are less likely to have access to financial resources if they wanted them. We find that men and male-headed households are more likely to access formal loans. As well, we find that male and female-headed households spend their financial resources differently with female-headed households most likely to use their credit for food, medical expenses and education and male-headed households most likely to use it on food, agriculture/ livestock inputs and education. Formals loans were more frequently associated with credit spent on agriculture/livestock inputs while informal loans were more likely to be utilized for buying food and medical care. In the context of food security we find that all households and sexes that attempted to borrow money in the past 12 months were less likely to borrow food or other goods, but that female-headed households were more than twice as likely to borrow food or other goods overall. These results add nuance to the relationship of financial resources to food security, suggesting that for many smallholders, especially women, credit is often used to obtain food and other health outcomes as compared to on-farm investment. The use of financial resources for these varying purposes likely has different short-term vs. long-term returns and tradeoffs, which could influence smallholder farmer capacity for climate change adaptation
GnRH-agonist implants suppress reproductive function and affects ovarian LHR and FSHR expression in prepubertal female cats
Silicoaluminates as “support activator” systems in olefin polymerization processes
In this work we report the polymerization behaviour of natural clays (montmorillonites, MMT) as activating supports. These materials have been modified by treatment with different aluminium compounds in order to obtain enriched aluminium clays and to modify the global Brönsted/Lewis acidity. As a consequence, the intrinsic structural properties of the starting materials have been changed. These changes were studied and these new materials used for ethylene polymerization using a zirconocene complex as catalyst. All the systems were shown to be active in ethylene polymerization. The catalyst activity and the dependence on acid strength and textural properties have been also studied. The behaviour of an artificial silica (SBA 15) modified with an aluminium compound to obtain a silicoaluminate has been studied, but no ethylene polymerization activity has been found yet
References
www.biogeosciences-discuss.net/11/8373/2014/ doi:10.5194/bgd-11-8373-2014 © Author(s) 2014. CC Attribution 3.0 License. This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Wind-induced upwelling in the Kerguele
Roaring high and low: composition and possible functions of the Iberian stag's vocal repertoire
We provide a detailed description of the rutting vocalisations of free-ranging male Iberian deer (Cervus elaphus hispanicus, Hilzheimer 1909), a geographically isolated and morphologically differentiated subspecies of red deer Cervus elaphus. We combine spectrographic examinations, spectral analyses and automated classifications to identify different call types, and
compare the composition of the vocal repertoire with that of other red deer subspecies. Iberian stags give bouts of roars (and more rarely, short series of barks) that are typically composed of two different types of calls. Long Common Roars are mostly given at the beginning or at the end of the bout, and are characterised by a high fundamental frequency (F0) resulting in poorly defined formant frequencies but a relatively high amplitude. In contrast, Short Common Roars are typically given in the middle or at the end of the bout, and are characterised by a lower F0 resulting in relatively well defined vocal tract resonances, but low amplitude. While we did not identify entirely Harsh Roars (as described in the Scottish red
deer subspecies (Cervus elaphus scoticus), a small percentage of Long Common Roars contained segments of deterministic chaos. We suggest that the evolution of two clearly distinct types of Common Roars may reflect divergent selection pressures favouring either vocal efficiency in high pitched roars or the communication of body size in low-pitched, high spectral density roars highlighting vocal tract resonances. The clear divergence of the Iberian red deer vocal repertoire from those of other documented European red deer populations reinforces the status of this geographical variant as a distinct subspecies
Backlash and beyond : the criminalization of agrarian reform and peasant response in the Philippines
In the 35 years since the end of the dictatorship in the Philippines many rural poor Filipinos have been caught up in a political battle over the pace and direction of agrarian change. This paper focuses on the political-legal dimension of agrarian conflict in one region, exploring how it has fueled and been fueled by criminalization, particularly the indiscriminate filing of criminal charges against share tenants struggling for recognition as legal land rights holders under the 1988 agrarian reform law. Here, criminalization is a form of landlord retribution against tenants who dare to defy the status quo. The case demonstrates how tenants get “bound by law” – e.g., caught up in inconsistencies in state law and ensnared in costly legalist traps set by powerful landowners threatened with redistribution, but then also leading to innovative collective efforts to activate state officials to step in on the side of peasants to make state law authoritative in society. En los 35 años transcurridos desde el final de la dictadura en Filipinas muchos filipinos pobres de zonas rurales se han visto atrapados en una batalla política por el ritmo y la dirección del cambio agrario. Este artículo se centra en la dimensión político-jurídica del conflicto agrario en una región, analizando cómo ha impulsado y ha sido impulsado por la criminalización, especialmente la presentación indiscriminada de cargos penales contra los aparceros que luchan por que se les reconozcan los derechos de tierra legales, bajo la ley de reforma agraria de 1988. En este caso, la criminalización es la forma que tienen los terratenientes de responder contra los aparceros que osan desafiar el status quo. El caso demuestra cómo los arrendadores están "obligados por ley" - por ejemplo, están inmersos en incoherencias en la ley estatal y atrapados en costosas trampas legalistas puestas por los poderosos terratenientes amenazados con la redistribución, pero al mismo tiempo lideran esfuerzos colectivos innovadores para hacer que los funcionarios estatales se muevan a favor de los agricultores, y conseguir que la ley estatal sea autorizada en sociedad
A cosmological dust model with extended f(chi) gravity
Introducing a fundamental constant of nature with dimensions of acceleration
into the theory of gravity makes it possible to extend gravity in a very
consistent manner. At the non-relativistic level a MOND-like theory with a
modification in the force sector is obtained, which is the limit of a very
general metric relativistic theory of gravity. Since the mass and length scales
involved in the dynamics of the whole universe require small accelerations of
the order of Milgrom's acceleration constant a_0, it turns out that the
relativistic theory of gravity can be used to explain the expansion of the
universe. In this work it is explained how to use that relativistic theory of
gravity in such a way that the overall large-scale dynamics of the universe can
be treated in a pure metric approach without the need to introduce dark matter
and/or dark energy components.Comment: 7 pages, 1 figure. Accepted for publication in the European Physical
Journal
Injertos osteocondrales congelados en el conejo: Estudio experimental
Con el propĂłsito de analizar un protocolo de congelaciĂłn de cartĂlago completo estudiando y la viabilidad del cartĂlago tas la implantaciĂłn se ha realizado un estudio experimental en 60 rodillas de 45 conejos de Nueva Zelanda en poblaciĂłn no genĂ©ticamente pura. Se extrajeron injertos osteocartilaginosos de 4 mm de diámetro y 2-3 mm de espesor, incluyendo cartĂlago articular y hueso subcondral que fueron sometidos a congelaciĂłn lenta hasta -196Âş en Planer Kryo-10, Serie II, Controlled Rate Freezers, siguiendo un descenso de temperatura controlada bajo crioprotecciĂłn con DimetilsulfĂłxido, propanodiol y sacarosa. Posteriormente fueron descongelados e implantados en cĂłndilos femorales. Los injertos evolucionaron a tejido amorfo acelular y pasados los 2 meses, tras la incorporaciĂłn del componente Ăłseo se desarrollĂł tejido ibrocartilaginoso de sustituciĂłn. El presente estudio indica que el cartĂlago articular congelado no mantiene su viabilidad tras la implantaciĂłn.The purpose of this study was to analyze a protocol for freezing whole cartilage and to study the viability of cartilage after the implant in 60 knees of 45 New Zealand rabbits from a genetically impure population. Osteocartilaginous implants were removed, measuring 4 mm in diameter and 2-3 mm thickness, inclunding the articular cartilage and the suchondral bone, and slow freezing up -196Âş using Planer Kyro-10, Series II, Controlled Rate Freezers, following a controlled drop in temperature under cyrso-protection with Dimethylsulfoxide, propanediol and sacarose. After thawing grafts were implanted in femoral condyles. The implants evolves into an acellular amorphous tissue and after 2 months, period in which the incorporation of the osseous compound occurs, substitute fibrocartilaginous tiusse develops. This study shows that frozen articular cartilage does not remain viable after implant
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