基于超短基线的缆控水下机器人动力定位

动力定位 (DynamicPositioning(DP) )技术是水下机器人的关键技术之一。因此针对当前动力定位主要在缆控水下机器人 (ROV)中应用的情况 ,给出了ROV动力定位技术的实施方法。通过声学定位技术确定ROV的坐标 ,计算出与期望位姿的差 ,将其作为神经网络控制器的输入量来控制ROV ,从而进行动力定位。同时还重点研究了ROV动力定位中的主要研究内容即水声定位技术和定位控制技术的构建。

基于港航运输供应链管理

大文以大连港DP-CIMS资管理系统开发为背景，根据港航运输的特点，利用供应链管协调机制与方法，采用CORBA面向对象技术，开展了基于港航运输的供应链管理模设计与实施技术研究，提出了适合企业的供应链管理总体功能的结构框架，并着手在供应链管理系统网络环境下进行模型建立与开发。

PASSIM卷接机组新型电控系统的设计与实现

PASSIM卷接机组原控制系统采用电路板进行逻辑控制,抗干扰性能差,故障率高,造成生产效率降低、原材料消耗增大、维修工作繁重等。为此,设计了一套新型卷接机组电气控制系统。该系统采用PLC进行过程控制,以工控机为上位机完成人机通信,采用交流伺服驱动,并通过高速信号处理专用系统完成重量检测控制及烟支质量检测功能;利用PROFIBUS、CAN及MPI多种总线方式完成各单元间的通讯,实现信号和数据间的传递和共享。改进后的PASSIM机组运行稳定可靠,采样速度快,实时性强,且维修方便。机组的有效作业率由85%左右提高到90%以上,降低了卷烟纸和烟丝等原材料的消耗。

巴丹吉林沙漠近40a风沙活动规律浅析

Based on the data of wind from 11 meteorological observation stations in recent 40 years, the paper analyzed the temporal and spatial distribution characteristics of resultant drift potential in the Badain Jaran Desert. The 84 sand samples were collected and analysed from three compound crescentic dunes developped on southeast part of The Badain Jaran Desert. Through the statistics and computation of wind data and the analysis of Grain Size over compound crescentic dunes in The Badain Jaran Desert, this paper analyzed the characteristics of the blown sand activities in in this area. The following viewpoints were obtained: 1　Most parts of The Badain Jaran Desert are dominated by northwest wind and sub－dominated by west wind, while prevailing wind in southeast part of The Badain Jaran Desert is southeast, different froms other places. 2 The Badain Jaran Desert is strongly zoned from its surounding meteorological observation stations. It has impressively high DP and RDP value. Except for Ding Xin Station in medium wind power environment, the left stations are all belongs to high wind－power districts. 3 From the seventies till now, the value of DP and RDP in The Badain Jaran Desert shows a decending trend except for the RDP value of Guai Zihu Station in the north. This trend indicates that the wind power for the moment of The Badain Jaran Desert is far lower than it in the seventies. 4 Adopting sand rose map for classification of wind environments in defferent parts of The Badain Jaran Desert, Ejinaqi is Narrow unimodal wind regimes, Ding xin, Bayinmaodao and Ayouqi districts obtuse bimodal and Guaizihu complex. 5 Resultant drift directions in most parts of the Badain Jaran desert are southeast, which indicates annual net sand in these areas drifted from the northwest to the southeast of the desert, which consists with the analysis results of grain size of predecessors. RDD in Ayouqi staion shows the net sand drifted from the southeast to the northwest in the recent 40 years, which may attribute to the reason that, the Badain Jaran desert lies in the zone influenced by both northwest and southeast wind, the southeast monsoon was strengthened and northwest wind became weaker than a former time. So, if sand mareria is sufficient, there are two different drift directions, namely two sorts of sand source, existed in Badain Jaran desert at least. 6 Based on analysis results of meteorologic data and grain size, blown sand activities is that, in most parts of Badain Jaran desert in the past 40 years, northwest wind transported net sand from the northwest part to the southeast part of The Badain Jaran Desert.And besides this, analysis of collected sand samples also shows that, in the southeast part of Badain Jaran desert, grain size do fined from southeast to northwest. Combining results of meteorologic data in the southeast part, it can infered that southeast monsoon took blown sand to the inner desert from its southeast part.

塔里木地块奥陶纪古地磁新结果及其构造意义

The Tarim Block is located between the Tianshan Mountains in the north and the Qinghai-Tibet Plateau in the south and is one of three major Precambrian cratonic blocks of China. Obviously, the Paleozoic paleogeographic position and tectonic evolution for the Tarim Block are very important not only for the study of the formation and evolution of the Altaids, but also for the investigation of the distributions of Paleozoic marine oil and gas in the Tarim Basin. According to the distributions of Paleozoic strata and suface outcrops in the Tarim Block, the Aksu-Keping-Bachu area in the northwestern part of the Tarim Block were selected for Ordovician paleomagnetic studies. A total of 432 drill-core samples form 44 sampling sites were collected and the samples comprise mainly limestones, argillaceous limestones and argillaceous sandstones Based on systematic study of rock magnetism and paleomagnetism, all the samples could be divided into two types: the predominant magnetic minerals of the first type are hematite and subordinate magnetite. For the specimens from this type, characteristic remanent magnetization (ChRM) could generally be isolated by demagnetization temperatures larger than 600℃; we assigned this ChRM as component A; whilst magnetite is the predominant magnetic mineral of the second type; progressive demagnetization yielded another ChRM (component B) with unblocking temperatures of 550-570℃. The component A obtained from the majority of Ordovician specimens has dual polarity and a negative fold test result; we interpreted it as a remagnetization component acquired during the Cenozoic period. The component B can only be isolated from some Middle-Late Ordovician specimens with unique normal polarity, and has a positive fold test result at 95% confidence. The corresponding paleomagnetic pole of this characteristic component is at 40.7°S, 183.3°E with dp/dm = 4.8°/6.9° and is in great difference with the available post-Late Paleozoic paleopoles for the Tarim Block, indicating that the characteristic component B could be primary magnetization acquired in the formation of the rocks. The new Ordovician paleomagnetic result shows that the Tarim Block was located in the low- to intermediate- latitude regions of the Southern Hemisphere during the Middle-Late Ordovician period, and is very likely to situate, together with the South China Block, in the western margin of the Australian-Antarctic continents of East Gondwana. However, it may have experienced a large northward drift and clockwise rotation after the Middle-Late Ordovician period, which resulted in the separation of the Tarim Block from the East Gondwanaland and subsequent crossing of the paleo-equator; by the Late Carboniferous period the Tarim Block may have accreted to the southern margin of the Altaids.

REE characteristics of the Fanshan alunite deposit in Zhejiang Province, China

REE geochemistry data from the Fanshan alunite deposit indicated that its ore-forming materials came chiefly from the country rocks, with δCe〉0 for alunite ores. According to the differences in δEu, the alunite ores were divided into three types： weak negative Eu anomaly, weak positive Eu anomaly and remarkable positive Eu anomaly. The phenomena of Ce-enrichment in the ores indicated that the Fanshan alunite deposit was formed in an oxidizing environment. Variations in fO2 are corresponding to those in δEu： Eu anomaly varies from negative to positive with increasing fO2. And two other important factors may impact the occurrence of Eu anomalies： the contents of alkaline feldspar and the protolith structure in the mineralization period.

One-step synthesis of 2-pentanone from ethanol over K-Pd/MnOx-ZrO2-ZnO catalyst

A highly active and selective K-Pd/MnOx-ZrO2-ZnO catalyst for the one-step synthesis of 2-pentanone from ethanol is described. The possible reaction pathways for ethanol reaction over K-Pd/MnOx-ZrO2-ZnO catalyst were investigated by means of TPSR, CO2- and NH3-TPD techniques. The reactions were performed in a fixed bed continuous flow reactor. Complete conversion with high selectivity for 2-pentanone, was observed under 370 similar to 390degreesC, 2 similar to 4 MPa, GHSV = 8000 similar to 10,000 h(-1) and LHSV < 1.25 h(-1) conditions. Ethanol reactions over K-Pd/MnOx-ZrO2-ZnO catalyst showed that the catalyst could catalyze dehydrogenation. aldol. dehydration and hydrogenation reactions. Both acidic and basic properties are found on the surface of K-Pd/MnOx-ZrO2-ZnO catalyst, whose multifunctionality with the combination of basic, acid and metal sites may be responsible for the efficiency of the K-PdMnOx-ZrO2-ZnO catalyst. (C) 2004 Elsevier B.V. All rights reserved.

Agressividade e representações sobre a violência em jovens institucionalizados

Dissertação de Mestrado apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Psicologia Clínica e da Saúde.

Correlatos de bem-estar espiritual de indivíduos em reabilitação cardíaca pós-enfarte agudo do miocárdio

Dissertação de Mestrado apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Psicologia Clínica e da Saúde.

Representações sociais dos estudantes universitários face a uma relação sexual ocasional

Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Mestre em Psicologia especialização em Psicologia da Saúde e Intervenção Comunitária.

Qualidade de Vida, Vinculação e Resiliência em adolescentes institucionalizados

Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Psicologia, ramo de Psicologia Clínica e da Saúde

Qualidade de vida relacionada com a saúde oral

Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Psicologia, ramo de Psicologia Clínica e da Saúde

Vivências amorosas em adolescentes

Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Psicologia, ramo de Psicologia Clínica e da Saúde

Qualidade de vida e correlatos sociodemográficos e clínicos

Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Psicologia, ramo de Psicologia Clínica e da Saúde

A dor no período pós-cirúrgico abdominal em doentes geriátricos

A dor é uma das principais causas do sofrimento humano, comprometendo a qualidade de vida dos indivíduos, em especial o idoso que, devido aos problemas cognitivos e à elevada medicação os torna mais suscetíveis aos efeitos adversos dos medicamentos utilizados para o alívio da dor. Neste contexto, o objetivo deste estudo é avaliar a dor na pós-cirurgia abdominal em doentes geriátricos; identificar a localização e a intensidade dolorosa utilizando a Escala Numérica; analisar a dor nas dimensões sensorial, afetiva e cognitiva, utilizando o Questionário para Dor de McGill; relacionar o processo álgico com a idade, sexo, religião e tipo de abordagem cirúrgica; saber se as intervenções autónomas de enfermagem contribuem para o alívio da dor pós-operatória. Trata-se de um estudo descritivo correlacional longitudinal, com abordagem quantitativa, desenvolvido entre 14 de fevereiro e 30 de março de 2012 num Hospital no Serviço de Cirurgia Geral. A amostra constou de 30 pacientes submetidos a cirurgias abdominais. Os dados que serviram de base a este estudo foram recolhidos através da aplicação da Escala Numérica e do Questionário de Dor de McGill. Os resultados mostraram que 60% eram homens, 50% dos doentes tinham 65 e 69 anos e todos (100%), eram católicos romanos. Na primeira avaliação, 60% apresentaram dor pós-operatória moderada, 30% severa e 10% leve. Os descritores escolhidos com maior frequência foram: fisgada (90%); fina, agulhada e pontada (70%); beliscão (60%); sensível (50%); cansativa (60%) e que incomoda (50%). Nas três avaliações seguintes houve diminuição da dor severa e moderada que, aos 180 minutos era de 0% e 3% respetivamente, aumentando a percentagem de pacientes com dor leve (7%). Não encontramos relação significativa entre a variável dor pós-operatória e o sexo mas, pelo contrário, a intensidade da dor pós-operatória e a idade. O índice de dor total e sensitiva é influenciado pelo sexo. A localização da dor é influenciada pelo tipo de cirurgia, pela idade e pelo sexo. A dor pós-operatória era, principalmente, de intensidade moderada. Mesmo nos doentes a quem não foi administrado fármaco (50%), a dor foi aliviada ao longo das quatro avaliações. Desta forma, podemos inferir que as que as intervenções autónomas de enfermagem contribuem para o alívio da dor. A informação/atualização permanente dos profissionais de saúde é indispensável para que seja possível evitar ou minimizar a ocorrência de dor.