994 resultados para Hamilton, Margaret , 1902-1985


Relevância:

20.00% 20.00%

Publicador:

Resumo:

This paper analyzes the stationarity of this ratio in the context of a Markov-switching model à la Hamilton (1989) where an asymmetric speed of adjustment is introduced. This particular specification robustly supports a nonlinear reversion process and identifies two relevant episodes: the post-war period from the mid-50’s to the mid-70’s and the so called “90’s boom” period. A three-regime Markov-switching model displays the best regime identification and reveals that only the first part of the 90’s boom (1985-1995) and the post-war period are near-nonstationary states. Interestingly, the last part of the 90’s boom (1996-2000), characterized by a growing price-dividend ratio, is entirely attributed to a regime featuring a highly reverting process.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

(Document pdf contains 54 pages)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

(PDF contains 84 pages.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

在海洋水域,界面波对大尺度变化流的作用是一种典型的分层流动现象。考虑一不可压缩、无黏的分层势流运动,建立了一个在非平整运动海底上的n层流体演化系统,并对其进行了Hamilton描述。每层流体具有各自的常密度、均匀流水平速度,其厚度由未扰动和扰动部分构成。相对于顶层流体的自由表面,刚性、运动的海底具有一般地形变化特征。在明确指出n层流体运动的控制方程和各层交界面上的运动学、动力学边界条件(包含各层交界面上张力效应)后,对该分层动力系统进行了Hamilton构造,即给出其正则方程和其下述的正则变量:各交界面位移和各交界面上的动量势密度差。

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Com dedicatória à Camara dos Deputados do Senador Joaquim José Pais da Silva Sarmento, 1900-1902(na página de rosto)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Eguíluz, Federico; Merino, Raquel; Olsen, Vickie; Pajares, Eterio; Santamaría, José Miguel (eds.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Parte 1 - Atos do Poder Legislativo

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Parte 1 - Atos do Poder Legislativo

Relevância:

20.00% 20.00%

Publicador:

Resumo:

[ES] En el Archivo General de la Universidad de Navarra, dentro del Fondo Luis de Eleizalde, se conservan un telegrama y ocho cartas de Sabino Arana Goiri al propio Eleizalde, fechadas entre el 3 de diciembre de 1900 y el 21 de agosto de 1902. Se trata de una documentación inédita, de gran interés para conocer diversos aspectos de la ideología y la acción política y cultural del fundador del nacionalismo vasco en los últimos años de su vida. Las cartas aportan nuevos datos sobre las difíciles relaciones de Arana con los fueristas del semanario Euskalduna, su participación en el Congreso de Hendaya para la unificación ortográfica del euskera, las publicaciones periódicas creadas por él (en especial la revista cultural Euzkadi), su controvertida evolución españolista de 1902, etc.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Sets and catches of Atlantic menhaden, Brevoortia tyrannus, made in 1985-96 by purse-seine vessels from Virginia and North Carolina were studied by digitizing and analyzing Captain's Daily Fishing Reports (CDFR's), daily logs of fishing activities completed by captains of menhaden vessels. 33,674 CDFR's were processed, representing 125,858 purse-seine sets. On average, the fleet made 10,488 sets annually. Virginia vessels made at least one purse-seine set on 67%-83% of available fishing days between May and December. In most years, five was the median number of sets attempted each fishing day. Mean set duration ranged from 34 to 43 minutes, and median catch per set ranged from 15 to 30 metric tons (t). Spotter aircraft assisted in over 83% of sets overall. Average annual catch in Chesapeake Bay (149,500 t) surpassed all other fishing areas, and accounted for 52% of the fleet's catch. Annual catch from North Carolina waters (49,100 t) ranked a distant second. Fishing activity in ocean waters clustered off the Mid-Atlantic states in June-September, and off North Carolina in November-January. Delaware Bay and the New Jersey coast were important alternate fishing grounds during summer. Across all ocean fishing areas, most sets and catch occurred within 3 mi. of shore, but in Chesapeake Bay about half of all fishing activity occurred farther offshore. In Virginia, areas adjacent to fish factories tended to be heavily fished. Recent regulatory initiatives in various coastal states threaten the Atlantic menhaden fleet's access to traditional nearshore fishing grounds. (PDF file contains 26 pages.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This document is in Spanish. Los cuatro capítulos que integran este Anuario constituyen la cobertura básica de las distintas fases de la actividad pesquera. Con ello se integra la informaci6n cuantitativa referente a cada una de las fases, desde la identificaci6n de sus prop6sitos, hasta los medios y técnicas con que se realizan y los resultados finales alcanzados en el año de referencia. En el Capitulo 1, relativo a la fase primaria o extractiva, se han considerado no s610 las cifras correspondientes a la captura, se incluyen tambien los correspondientes a los bienes de capital -embarcaciones, artes y equipos de pesca e infraestructura portuaria- y a la poblaci6n dedicada a la extracci6n. Para la etapa industrial, Capítulo 11, se presenta la informaci6n de los activos fijos dedicados a la actividad pesquera, así como el resultado de su operaci6n por principales procesos: congelado, enlatado, reducci6n y otros como el seco-salado y el ahumado. Para la fase comercial, capítulo 111, se incluye la info~ maci6n referente a los volúmenes disponibles de productos pesqueros, su valor y las cifras relativas al comercio ex terior. Se consigna, igualmente, la estadística concerniente al consumo de estos productos. Por último, en el Capítulo IV se integran las informaciones provenientes de diferentes unidades administrativas del sector, como las relativas a la capacitaci6n, al empleo y al financiamiento de la actividad. Catch statistics for Mexican waters 1985. (PDF has 293 pages.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Observations on maturation stages of nineteen species of economically important finfish off the Northeast coast of the USA were analyzed to examine relationships between fish size or age, and maturity. Maturation schedules and median lengths (L50) and ages (A50) at maturation were derived by fitting the logistic model to the observed proportions. Analyses were generally restricted to observations from 1985 to 1990 obtained during stratified random bottom trawl surveys conducted in spring and autumn by the Northeast Fisheries Science Center and the Commonwealth of Massachusetts Division of Marine Fisheries in waters of the continental shelf from Nova Scotia to Cape Hatteras, North Carolina. Butterfish, Peprilus triacanthus, attained sexual maturity at the smallest median length (11.4 cm, males) and pollock, Pollachius virens, at the highest (41.8 em, males). Median length at maturity for gadiforms ranged from 22.2 to 41.8 em. Within the pleuronectiforms, median length at maturity ranged from 19.1 to 30.4 cm. Median lengths for the pelagic and miscellaneous demersal species were in the same ranges as the pleuronectiforms. Butterfish also attained sexual maturity at the youngest median age (0.9 yr, both sexes) whereas redfish, Sebastes fasciatus, were the latest to mature (5.5 yr, both sexes). For gadids, the median age at maturity ranged from 1.3 to 2.3 yr. Within the pleuronectiforms, median age at maturity ranged from 1.3 to 4.4 yr and, for pelagic species, from 0.9 to 3.0 yr. Median lengths and ages for many species are lower than those reported in earlier studies of the same general region of the Northwest Atlantic. (PDF file contains 72 pages.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This report is a summary of the results of 883 purse seine sets made for juvenile salmonids during 15 cruises off the coasts of Oregon and Washington during the springs and summers of 1981-1985. Juvenile coho salmon (Oncorhynchus kisutch) occurred most frequently, followed by chinook salmon (0. tshawytscha). The juveniles of these two species co-occurred more frequently than expected. Juvenile chum, pink and sockeye salmon (0. keta, O. gorbuscha, and O. nerka), steelhead (0. mykiss) and cutthroat trout (0. clarki clarki) were caught much less frequently and in lower numbers than coho or chinook salmon. We found no evidence of large schools ofjuvenile salmonids. A northerly movement of juvenile coho salmon wa~ suggested by decreased catches off Oregon and increased catches off Washington between early and late summer. Highest catch per set of juvenile coho salmon was usually found inshore of 37.2 km. Juvenile chinook salmon were usually found within 27.9 km of the coast. Juvenile salmonids were found over a broad range of surface salinities and temperatures. High catches of juvenile coho salmon occurred in both the low salinity waters of the Columbia River plume and in adjacent higher salinity waters. Preferences for specific salinities or temperatures were not obvious for any species, although catch rates of juvenile coho salmon were highest in years when chlorophyll content was also high. Based on expansions of fish with coded wire tags, we estimated that hatchery coho salmon smolts comprised 74%, on average, of the juvenile coho salmon catches. The remaining 26% were presumably wild fish or hatchery fish released as fingerlings. Hatchery coho salmon were caught roughly in proportion to the numbers released. However, hatchery fish from the Columbia River and private coastal facilities were caught at slightly higher rates while those from coastal Washington and public coastal Oregon hatcheries were caught at slightly lower rates than expected from the numbers released. No juvenile coho salmon with coded wire tags were caught that had originated from either California or Puget Sound hatcheries. (PDF file contains 88 pages.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

A study/predation control program was conducted at the Hiram M. Chittenden Locks in Seattle, Washington from 20 December through 23 April 1986. The principal objectives were to document the rate and effects of predation on winter-run steelhead (Salmo gairdneri Richardson) by California sea lions (Zalophus californianus); to control and minimize predation in order to increase the escapement of wild winter-runs to the Lake Washington watershed; to evaluate and recommend potential long term procedures for control of steelhead predation; and to document the abundance and distribution of California sea lions in Puget Sound.