Sombreamento dos cafezais V: resultados de mais dois bienios: 1967/1968 - 1970/1971

Os dados obtidos durante os anos de 1967 a 1971 (2 biênios: 1967/1968 e 1670/1971) no cafèzal da E.S.A. "Luiz de Queiroz", parte sombreada e parte a pleno sol, foram estudados no presente trabalho, complementando aqueles de sete biênios já descritos em trabalhos anteriores. Os resultados obtidos, analisados estatisticamente em relação à produção, porcentagem de broca, porcentagem de frutos verdes, de maduros e de sêcos, rendimento de café da roça, relação café beneficiado/café coco e peneira média, permitiram as conclusões seguintes, principalmente em relação aos biênios estudados: a. o lote sombreado, em relação a um dos lotes não sombreado, apresentou diferenças significativas quanto à produção, em favor para o sombreado; isso se deve provavelmente ao fato de as plantas de sombra estarem agora em decadência com muitas árvores mortas, favorecendo o lote sombreado pela luz e pela matéria orgânica acumulada; b. a porcentagem de broca continuou a ser, em geral, sempre maior nos lotes sombreados; c. as porcentagens de frutos verdes, de maduros e de sêcos dependem, em geral, do ano e da época da colheita.

Brennpunkt Vietnam : die Entwicklung der Vietnam-Berichterstattung im STERN von 1964 bis 1968

Die Bachelorarbeit beschreibt die Entwicklung der Vietnam-Berichterstattung im deutschen Magazin "Stern" parallel zum Kriegsverlauf und stellt diese in einen gesamthistorischen Zusammenhang unter Beachtung der Ereignisse in der Bundesrepublik Deutschland. Betrachtet und analysiert werden die Jahre 1964-1968.

El Niño in Peru : biology and culture over 10,000 years : Papers from the VIII Annual A. Watson Armour III Spring Symposium, May 28-29, 1999, Chicago / Jonathan Haas and Michael O. Dillon, editors.

n.s. no.43(2003)

Relationships among the living genera of beaked whales with classifications, diagnoses, and keys. a selection from the collection of Mr. and Mrs. Harold G. Duckworth. [Exhibition] December 1, 1968-January 12, 1969.

v.53:no.4(1968)

The possibility for continuous growth with exhaustible resources: unknowingly an agreement has been reached, but it may not be correct

It is the size of the elasticity of substitution that has been the central issue in the long debate over the possibility of continuous growth in the presence of exhaustible resources. This paper reviews the debate and comes to the surprising conclusion that , unnoticed by the pessimists, the optimist position has gradually evolved so that it now approximates that of the pessimists. The paper also summarises some preliminary work by the author that indicates that this common position may not be correct

El Grupo Interuniversitario de Física Teórica (GIFT) : Génesis y desarrollo histórico (1968-1976)

Este trabajo estudia el caso de la Física Teórica de Altas Energías (FTAE) en España durante la dictadura de Franco. El trabajo analiza la creación de un grupo de investigación, el GIFT, además de la relación entre ciencia y política, las estrategias para organizarse, obtener recursos y desarrollarse, el problema de la tradición en ciencia y la influencia internacional en el caso de la FTAE. Desde el punto de vista metodológico, una parte fundamental del trabajo ha consistido en la recopilación y creación de fuentes históricas y material de archivo, dentro del proyecto del Servei d'Arxius de Ciència.

Más allá de la ley de May: disparidades curvilíneas y conflicto intrapartidista. El caso de Cataluña

Este artículo pretende contribuir al debate sobre el papel que desempeñan los adherentes y activistas y, de modo especial, a intentar plantear de nuevo el problema de su influencia dentro del partido. Para ello se revisa el trabajo de May (1973), sus posteriores desarrollos empíricos, y se intenta comprobar su validez en los principales ejes que marcan la competencia política catalana. Una vez comprobada la existencia de disparidades ideológicas en el caso catalán, el papel se centra en discutir algunas de las limitaciones del modelo de May. Ello permite, a su vez, sugerir la necesidad de elaborar un nuevo modelo de conflicto partidista que tenga presente tanto las relaciones de poder verticales (entre dirigentes y activistas) como horizontales (entre los mismos dirigentes). Para mostrar empíricamente las debilidades señaladas en el modelo de May, el análisis termina con un caso estudio que intenta ilustrar la dificultad de asociar disparidades con conflicto interno.

Personal Indebtedness, Spatial Effects and Crime

There is a long and detailed history of attempts to understand what causes crime. One of the most prominent strands of this literature has sought to better understand the relationship between economic conditions and crime. Following Becker (1968), the economic argument is that in an attempt to maintain consumption in the face of unemployment, people may resort to sources of illicit income. In a similar manner, we might expect ex–ante, that increases in the level of personal indebtedness would be likely to provide similar incentives to engage in criminality. In this paper we seek to understand the spatial pattern of property and theft crimes using a range of socioeconomic variables, including data on the level of personal indebtedness.

Personal Indebtedness, Spatial Effects and Crime

There is a long and detailed history of attempts to understand what causes crime. One of the most prominent strands of this literature has sought to better understand the relationship between economic conditions and crime. Following Becker (1968), the economic argument is that in an attempt to maintain consumption in the face of unemployment, people may resort to sources of illicit income. In a similar manner, we might expect ex–ante, that increases in the level of personal indebtedness would be likely to provide similar incentives to engage in criminality. In this paper we seek to understand the spatial pattern of property and theft crimes using a range of socioeconomic variables, including data on the level of personal indebtedness.

Personal indebtedness, community characteristics and theft crimes

Becker (1968) and Stigler (1970) provide the germinal works for an economic analysis of crime, and their approach has been utilised to consider the response of crime rates to a range of economic, criminal and socioeconomic factors. Until recently however this did not extend to a consideration of the role of personal indebtedness in explaining the observed pattern of crime. This paper uses the Becker (1968) and Stigler (1970) framework, and extends to a fuller consideration of the relationship between economic hardship and theft crimes in an urban setting. The increase in personal debt in the past decade has been significant, which combined with the recent global recession, has led to a spike in personal insolvencies. In the context of the recent recession it is important to understand how increases in personal indebtedness may spillover into increases in social problems like crime. This paper uses data available at the neighbourhood level for London, UK on county court judgments (CCJ's) granted against residents in that neighbourhood, this is our measure of personal indebtedness, and examines the relationship between a range of community characteristics (economic, socio-economic, etc), including the number of CCJ's granted against residents, and the observed pattern of theft crimes for three successive years using spatial econometric methods. Our results confirm that theft crimes in London follow a spatial process, that personal indebtedness is positively associated with theft crimes in London, and that the covariates we have chosen are important in explaining the spatial variation in theft crimes. We identify a number of interesting results, for instance that there is variation in the impact of covariates across crime types, and that the covariates which are important in explaining the pattern of each crime type are largely stable across the three periods considered in this analysis.

Atomic Cournotian Traders May Be Walrasian.

In a bilateral oligopoly, with large traders, represented as atoms, and small traders, represented by an atomless part, when is there a non-empty intersection between the sets of Walras and Cournot-Nash allocations? Using a two commodity version of the Shapley window model, we show that a necessary and sufficient condition for a Cournot- Nash allocation to be a Walras allocation is that all atoms demand a null amount of one of the two commodities. We provide two examples which show that this characterization holds non-vacuously. When our condition fails to hold, we also confirm, through some examples, the result obtained by Okuno, Postlewaite, and Roberts (1980): small traders always have a negligible influence on prices, while the large traders keep their strategic power even when their behavior turns out to be Walrasian in the cooperative framework considered by Gabszewicz and Mertens (1971) and Shitovitz (1973).