992 resultados para Internal states
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Selection of action may rely on external guidance or be motivated internally, engaging partially distinct cerebral networks. With age, there is an increased allocation of sensorimotor processing resources, accompanied by a reduced differentiation between the two networks of action selection. The present study examines the age effects on the motor-related oscillatory patterns related to the preparation of externally and internally guided movements. Thirty-two older and 30 younger adults underwent three delayed motor tasks with S1 as preparatory and S2 as imperative cue: Full, laterality instructed by S1 (external guidance); Free, laterality freely selected (internal guidance); None, laterality instructed by S2 (no preparation). Electroencephalogram (EEG) was recorded using 64 surface electrodes. Motor-Related Amplitude Asymmetries (MRAA), indexing the lateralization of oscillatory activities, were analyzed within the S1-S2 interval in the mu (9-12 Hz) and low beta (15-20 Hz) motor-related frequency bands. Reaction times to S2 were slower in older than younger subjects, and slower in the Free than in the Full condition in older subjects only. In the Full condition, there were significant mu MRAA in both age groups, and significant low beta MRAA only in older adults. The Free condition was associated with large mu MRAA in younger adults and limited low beta MRAA in older adults. In younger subjects, the lateralization of mu activity in both Full and Free conditions indicated effective external and internal motor preparation. In older subjects, external motor preparation was associated with lateralization of low beta in addition with mu activity, compatible with an increase of motor-related resources. In contrast, absence of mu and limited low beta lateralization in internal motor preparation was concomitant with reaction time slowing and suggested less efficient cerebral processes subtending free movement selection in older adults, indicating reduced capacity for internally driven action with age.
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Texte intégral: http://www.springerlink.com/content/3q68180337551r47/fulltext.pdf
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We find that over the period 1950-1990, US states absorbed increases in the supplyof schooling due to tighter compulsory schooling and child labor laws mostly throughwithin-industry increases in the schooling intensity of production. Shifts in the industrycomposition towards more schooling-intensive industries played a less important role.To try and understand this finding theoretically, we consider a free trade model withtwo goods/industries, two skill types, and many regions that produce a fixed rangeof differentiated varieties of the same goods. We find that a calibrated version ofthe model can account for shifts in schooling supply being mostly absorbed throughwithin-industry increases in the schooling intensity of production even if the elasticityof substitution between varieties is substantially higher than estimates in the literature.
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In accordance with Iowa Code Section 8A.502(8) we are pleased to submit the Comprehensive Annual Financial Report (CAFR) for the State of Iowa for the fiscal year ended June 30, 2005. The report is presented in three sections as follows: • The Introductory Section includes this transmittal letter, the Government Finance Officers Association (GFOA) Certificate of Achievement for the fiscal year 2004 CAFR, an organizational chart of State government, and a list of principal State officials. • The Financial Section contains the independent auditor’s report on the Basic Financial Statements, Management’s Discussion and Analysis (MD&A), the Basic Financial Statements, and Notes to the Financial Statements. The Financial Section also contains Required Supplementary Information (RSI), other than the MD&A, and supplementary information in the form of combining financial statements and schedules. This letter is intended to be read in conjunction with the MD&A. • The Statistical Section highlights selected financial and demographic information, generally presented on a multi-year basis. The Department of Administrative Services is responsible for both the accuracy of the presented data, and the completeness and fairness of the presentation. We believe the information presented is accurate in all material respects and the necessary disclosures have been made which enable the reader to obtain an understanding of the State’s financial activity. This report has been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for governments as promulgated by the Governmental Accounting Standards Board (GASB). As a part of the statewide accounting system upgrade during fiscal year 2005, the implementation team performed a comprehensive review of the adequacy of internal controls and budgetary controls of the system. The team determined that internal controls continue to be in place to provide reasonable, but not absolute, assurance that assets are safeguarded against unauthorized use or disposition, and that financial records from all appropriate sources are reliable for preparing financial statements and maintaining accountability. The concept of reasonable assurance recognizes the cost of internal controls should not exceed the benefits likely to be derived from their use. To monitor the adequacy of internal controls, the Auditor of State reviews internal control procedures as an integral part of departmental audits.
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A list of species of tribe Aedini from Middle and South American, south of the United States, with their current generic combinations is provided. Its purpose is to enable entomologists, public health personnel and mosquito control workers to more quickly become familiar with recent formal taxonomic changes within the tribe.
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BACKGROUND: The general proficiency in physical diagnostic skills seems to be declining in relation to the development of new technologies. The few studies that have examined this question have invariably used recordings of cardiac events obtained from patients. However, this type of evaluation may not correlate particularly well with bedside skills. Our objectives were 1) To compare the cardiac auscultatory skills of physicians in training with those of experienced cardiologists by using real patients to test bedside diagnostic skills. 2) To evaluate the impact of a five-month bedside cardiac auscultation training program. METHODS: 1) In an academic primary care center, 20 physicians (trainees in internal medicine and family practice) and two skilled academic cardiologists listened to 33 cardiac events in 13 patients directly at bedside and identified the cardiac events by completing an open questionnaire. Heart sounds, murmurs and diagnosis were determined beforehand by an independent skilled cardiologist and were validated by echocardiography. Thirteen primary cardiologic diagnoses were possible.2) Ten of the physicians agreed to participate in a course of 45-minute sessions once a week for 5 months. After the course they listened again to the same patients (pre/post-interventional study). RESULTS: 1) The experts were the most skillful, achieving 69% recognition of heart sounds and murmurs and correct diagnoses in 62% of cases. They also heard all of the diastolic murmurs. The residents heard only 40% of the extra heart sounds and made a correct diagnosis in 24% of cases. 2) After the weekly training sessions, their mean percentage for correct diagnosis was 35% [an increase of 66% (p < 0.05)]. CONCLUSIONS: The level of bedside diagnostic skills in this relatively small group of physicians in training is indeed low, but can be improved by a course focusing on realistic bedside teaching.
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This paper estimates a translog stochastic frontier production function in the analysis of all 48 contiguous U.S. states in the period 1970-1983, to attempt to measure and explain changes in technical efficiency. The model allows technical inefficiency to vary over time, and inefficiency effects to be a function of a set of explanatory variables in which the level and composition of public capital plays an important role. Results indicated that U.S. state inefficiency levels were significantly and positively correlated with the ratio of public capital to private capital. The proportion of public capital devoted to highways is negatively correlated with technical inefficiency, suggesting that not only the level but also the composition of public capital influenced state efficiency.
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A auditoria interna é uma actividade independente ancorada à administração da empresa, com vista a acrescentar valor à organização nela inserida, observando o funcionamento dos controlos internos existentes. É uma actividade importante para qualquer empresa, por ser a única que tem acesso a todas as outras áreas da empresa. Cada vez ela torna-se mais importante, pois o mundo encontra-se em constante desenvolvimento e as empresas acompanham esse desenvolvimento ampliando as suas actividades, ou dimensão. O objectivo do estudo foi analisar o funcionamento da auditoria interna nas empresas públicas, identificando os seus benefícios e importância. Realizou-se um estudo bibliográfico e estudo de caso nas empresas públicas da cidade da Praia, através de questionários que foram distribuídos aos responsáveis de cada empresa, centralizando na TACV. Resultado: A maioria das empresas inqueridas é de grande dimensão, representando 57,1 %, as pequenas empresas representando 21.4% e as médias também representando 21.4. O ramo de prestação de serviço teve predominância com 64,3 %, comercial com 21,4% e 14,3 % do ramo industrial. Um total de 57 % das empresas inqueridas realizam auditoria interna e os 43 % que não realizam enunciaram como principais motivos o alto custo e a falta de necessidade, 40% enuncia alto custo, 40% diz não ser necessário e 20% tem outros motivos que não foram especificados. Verificou-se também que 25 % das empresas que realizam auditoria interna não tem o departamento de auditoria interna definido no organograma. Internal auditing is an independent activity anchored to the company management, with a view to adding value to the organization it inserted, observing the operation of existing internal controls. It is an important activity for any company, being the only one that has access to all other areas of the company. Each time it becomes more important as the world is constantly evolving and business development that accompany expanding its activities, or size. The aim of the study was to analyze the functioning of the internal audit public companies, identifying the benefits and importance. We conducted a bibliographic study and a case study in the public utilities of the city of Praia, through questionnaires that were distributed to the heads of each company, centering on TACV. Results: The majority of companies surveyed is large, representing 57.1%, small businesses represent 21.4% and averages also representing 21.4. The branch of service predominated with 64.3%, commercial 21.4% and 14.3% of the industrial sector. A total of 57% of companies surveyed conduct internal audit and the 43% who do not perform as main reasons enunciated the high cost and lack of need, high-cost states 40%, 40% say it is not necessary and 20% have reasons other than were specified. It was also found that 25% of companies that perform internal audit does not have the internal audit department defined in the organizational chart.
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A new debate over the speed of convergence in per capita income across economies is going on. Cross sectional estimates support the idea of slow convergence of about two percent per year. Panel data estimates support the idea of fast convergence of five, ten or even twenty percent per year. This paper shows that, if you ``do it right'', even the panel data estimation method yields the result of slow convergence of about two percent per year.
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Both sexes of a new phlebotomine sandfly species Micropygomyia (Sauromyia) vonatzingeni sp. nov. (Diptera, Psychodidae), captured in the Serra das Andorinhas, São Geraldo do Araguaia municipality, Pará state, and Cavalcante municipality, Tocantins state, Brazil, are described and illustrated. This new species belongs to the oswaldoi series and its distinction from the other extant species of the series was made by male and female identification keys. The specific geographical distribution of the oswaldoi series by country and department (or state) is presented.
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Political party formation and coalition building in the European Parliament is being a driving force for making governance of the highly pluralistic European Union relatively effective and consensual. In spite of successive enlargements and the very high number of electoral partiesobtaining representation in the European Union institutions, the number of effective European Political Groups in the European Parliament has decreased from the first direct election in 1979 to the fifth in 1999. The formal analysis of national party¹s voting power in different Europeanparty configurations can explain the incentives for national parties to join large European Political Groups instead of forming smaller nationalistic groupings. Empirical evidence shows increasing cohesion of European Political Groups and an increasing role of the European Parliament in EU inter-institutional decision making. As a consequence of this evolution, intergovernmentalism is being replaced with federalizing relations. The analysis can support positive expectations regarding the governability of the European Union after further enlargements provided that new member states have party systems fitting the European PoliticalGroups.