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Search Results: 1 - 10 of 2917 matches for " Wind Instrument "
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Configura??o glótica em tocadores de instrumento de sopro
Eckley, Claudia Alessandra;
Revista Brasileira de Otorrinolaringologia , 2006, DOI: 10.1590/S0034-72992006000100008
Abstract: introduction: knowledge of occupational voice disorders has gained increased importance as more individuals rely on their voices for their work. wind instrument players are a specific group of individuals that present intensive use of the vocal tract associated with blowing their instrument. interestingly, only a small number of reports focus on the laryngeal function of such professionals. aim: the current study evaluated the laryngeal and vocal tract movement of wind instrument players. material and methods: ten adult wind instrument players were studied with flexible videolaryngoscopy while playing their instrument, in order to observe the movements of the glottis, the vocal tract and the base of the tongue. results: in all the participants it was observed that musical tones were played with adducted vocal folds and that the greater the technical difficulty reported by the player, the more it was associated with increased lateral tension in the larynx, as well as constriction in the vocal tract. conclusions: the larynx controls the airflow that will reach the mouthpiece of the instrument, directly interfering in blowing. therefore, wind instrument players should also be considered professional voice users.
Pulmonary Functions in Trained and Untrained Wind Instrument Blowers
Mohan Manohar Sagdeo,,*Prashant Devidas Khuje
People's Journal of Scientific Research , 2012,
Abstract: The present cross-sectional study was designed to ascertain whether regular and trained wind instrument blowers develop higher pulmonary functions than untrained or part time blowers. The study included 155 trained & regular blowers (Group A), 100 untrained part-time blowers (Group B) and 100 non-blowers (Group C). They were investigated by a computerized spirometer (RMS medspiror).Group A subjects showed a significantly higher (p<0.001) percentage predicted value for Forced Vital capacity (FVC), Forced expiratory volume in the 1st second (FEV 1 ), Peak Expiratory Flow Rate (PEFR), Maximum Voluntary Ventilation(MVV), Forced Expiratory Flow at 25% & 50% of FVC (FEF25% & FEF50%), Forced Expiratory Flow between 25% & 75%of FVC (FEF 25-75%), FEF50% of FVC, than the other two groups. However, FEV 1/FVC % in group A was not statistically higher than the other two groups (p=0.3699). Thus, regular training of wind instrument blowing increases the pulmonary functions which may be a physiological advantage of blowing.
The Wind Turbine Performance Testing System of Vertical Axis Wind Brushless DC Generator

赵向阳, 刘天中
Smart Grid (SG) , 2011, DOI: 10.12677/sg.2011.13013
Abstract: 为了环境的可持续发展,世界各国越来越重视新能源的开发与利用。风能就是其中一种被广泛关注并开发的新能源。在风能资源的开发中,离网型垂直轴风力发电机正逐渐成为研究的热点之一。在研制、设计垂直轴风力发电机的过程中,需要开发相应的测试系统来提供试验数据参考,便于风力发电机的进一步研制。本测试系统基于虚拟仪器是针对某型垂直轴无刷直流发电机组而设计的。本系统能够对该垂直轴风力发电机组的风轮特性进行测试,测试时利用无刷直流电机的特性,测试出多种不同工况下的风轮特性曲线,即转速与风轮的机械功率之间的关系曲线。设计者通过该曲线既可以选择最佳的设计工况,也可以确定切入风速的大小。
In order to achieve the sustainable development of energy and environment, almost every country pops into development of new energy resource. Wind power is one of new energy resource, which has been an advanced subject paid close attention extensively. And off-grid the vertical axis wind turbine system is becoming one of hot issuse of wind turbine system researching. In researching vertical axis wind turbine system, researcher needs a testing system supplying the data of experiment to get a new level. The testing system is desgined for a vertical axis wind brushless dc generator. The system could test the of wind tubine perfomance of the vertical axis wind brushless dc generator, and it could get many wind turbine perfomance curves which is the relationship curve between rotated speed and the mechanical power in different conditons. The designer could choose the best design plans and the cut-in wind speed by these curves.
Building Inter-Organizational Social Capital Instruments to Evaluate Collaborative Networks  [PDF]
Janaina Macke, Rolando Vargas Vallejos, Eduardo Dalpiccoli Toss
iBusiness (IB) , 2010, DOI: 10.4236/ib.2010.21007
Abstract: This paper presents the development process of an inter-organizational social capital survey to evaluate collaborative networks. The survey instrument construction was based on three main sources. The first one, was a deep literature research that covered social capital and collaborative network issues. The second, a meta-analysis from well-known journals basically taken from the Business Source Premier Database. Finally, the third, was an exploratory research done in a Brazilian enterprise collaborative network. In this exploratory phase, we used semi-structured interviews, direct observation and document analysis. As a result of this work, we present two instruments for inter-organizational social capital evaluation: a qualitative instrument, built in the first stage of the study and a quantitative instrument (survey) built from the results of the exploratory phase.
A comperative study to nvestigate teaching processes of baglama and classical guitar
Zekeriya Kaptan,Sad?k Y?ndem
International Journal of Human Sciences , 2010,
Abstract: In this study, teaching processes of ba lama (a long-necked Turkish lute)and classical guitar are investigated to be comparativly. The study aims to answer the following questions: How has the teaching process of these instruments proceed in our country? What are the teaching strategies of this instrument? What differences and similarities between the teaching process of these two in instruments? This is a qualitative research. The opinions of experts by using the interview technique was taken. Also, related literature were examined comprehensivly. The data that obtained from research were evaluated by applying methods of descriptive analysis. The results indicate that teaching processes of ba lama and classical guitar have some differences in our country and each instruments has their own theaching styles
Wind Energy Conversion Systems Adapted to the Tunisian Sites  [PDF]
Fathi Ben Amar, Mustapha Elamouri
Smart Grid and Renewable Energy (SGRE) , 2013, DOI: 10.4236/sgre.2013.41009

The choice of a wind turbine for a given site is a very significant operation. It is advised to make an in-depth study on the characteristics of the aerogenerator and the implantation site before any installation of a wind farm for choosing well the system best adapted to the energy needs. The objective of this study is to sensitize the users of the wind energy on the various problems involved in the aerogenerator installation on any site and to provide a decision-making aid to the judicious choice of the wind system best adapted. The idea is to estimate, for a selected implantation site, the energy production and the operating time of several wind systems. We can thus select the aerogenerator best adapted by making a compromise between a maximum recovery of energy and a high time of production. The influence height of the aerogenerator on energy profitability is also studied. We apply this step to the twenty six Tunisian synoptic sites by implantation scenarios of seven wind systems of various nominal speeds in function of the height.

Efficiency of diagnostic model to predict recurrent suicidal incidents in diverse world communities  [PDF]
Vatsalya Vatsalya, Kan Chandras, Shweta Srivastava, Robert Karch
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.27074
Abstract: Suicidal attempts have a very significant effect on the society, and they also reflect on the efforts of the supporting health care and counseling facilities; and the mental health professionals involved. The impact of suicide is further magnified by the needs of persons who attempt suicide multiple times, requiring emergency health care and rehabilitation. Preventing such activities becomes a major task for the support providing agencies as soon as patient with such tendencies are identified. There are repetitive traits that can be observed during the entire therapeutic program among the high-risk group individuals, who are susceptible to this kind of activity and such traits indicate for specific profiling. The aim of the instrument is to prevent the occurrence of the repetitive suicidal attempts of the patients in various world regions, which may have significantly higher and concerning suicide rates. This profile has been constructed on the various parameters recognized in the statistical analysis of the patient population, which have been identified or can be under treat-ment for their suicidal behavior. This instrument is developed to predict the probability of population segments who may attempt suicide and repetitively, by matching the parameters of the profile with that of the patient pool. Building a profile for the purpose of predicting behavior of this kind can strengthen the intervention strategies more comprehensively and reduce such incidents and health care requirements and expenses.
Influence of Vertical Resolution on the Validation of Atmospheric Chemistry Instruments  [PDF]
Guochang Zhang
Atmospheric and Climate Sciences (ACS) , 2011, DOI: 10.4236/acs.2011.13011
Abstract: A large number of validation campaigns for atmospheric chemistry instruments are being carried out and more such studies will be performed in the future. The aims of validation are to confirm the accuracy and precision of the measurement of a new instrument. There are many factors that may deteriorate the validation results and one of them is the vertical resolution of instruments when using the profiles intercomparison ap-proach. The influence from the vertical resolution can be eliminated by using the averaging kernel method but it is necessary to find the conditions for using the method. This study simulated the influence of vertical resolution for a certain curvature. The results show that both the curvature of a profile and the difference of vertical resolution between two instruments have positive correlation with the differences between their measurements. The quantitative estimations of influence for some practical vertical resolutions were ob-tained. The combined error of two instruments was defined as the criteria to judge the significance of influ-ence. A case study based on the simulated results was demonstrated to show when the influence from the vertical resolution should be considered and when such influence can be omitted in order to avoid some un-necessary works in validation.
Computer Aided Modeling and Dynamic Analysis of A New Surgical Instrument  [PDF]
Jeremy (Zheng) Li
Surgical Science (SS) , 2012, DOI: 10.4236/ss.2012.35047
Abstract: One major difference among surgical instruments is the level of bodily disruption and tissue trauma that surgical devices might cause the patients. This newly designed and developed surgical instrument aims at minimally invasive therapy procedure, more reliable and durable function, less operational force, and reduced manufacturing cost. The computer aided modeling and simulation have been applied to help this new instrument design and analysis. This improved new surgical instrument is designed to use in general surgery to prevent patient's vessels and tissues from being damaging due to reliable motion control of surgical clips with no unexpected clip drop. It can also be applied to surgical education purpose to educate medical students for their future surgical careers. The prototype testing indicated that the handle operational force to close surgical clips is lower than current surgical clip instruments, product manufacturing is cost-effective due to less dimensional tolerance control of this new instrument design, more reliable instrument function, and good mechanical advantage.
Screening for Personality Disorders: A Comparison of the Dimensional NEO-FFI with the Categorical SAPAS-SR  [PDF]
Sara Germans, Alexander Rath, Guus L. Van Heck, Paul P. G. Hodiamont
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.42016

In psychiatric outpatients, the usefulness of the dimensional NEO-FFI as a screening instrument for personality disorders (PDs) was compared with the categorical screening instrument SAPAS-SR using the SCID-II as the gold standard. Major research questions are: 1) is the NEO-FFI a useful screening instrument for PDs? 2) does the NEO-FFI outperform a categorical screening instrument (SAPAS-SR)? 3) does combining both instruments improve the screening results? Extreme raising on Big Five personality trait domains (NEO-FFI) domain scores were examined in relation to the presence and the number of PDs as diagnosed, with to the SCID-II. Additionally, the NEO-FFI, in conjunction with a short self-report screening instrument (SAPAS-SR), was analysed with respect to sensitivity and specificity for screening of PDs. According to the SCID II, 97 patients (50%) were suffering from a PD. The majority of them had no (35.9%) or only one (40%) extreme score on one of the Big Five personality domains. There were no significant relationships between separate extreme traits on PD or five factor profiles, as proposed in the literature, and the presence of a SCID-II PD. Comparisons of the NEO-FFI with the SAPAS-SR showed no significant relationships. Using both screeners in conjunction resulted in an increase in specificity and the number of correctly classified cases at the expense, however, of the sensitivity. Correlation and regression analyses showed that personality traits are statistically significant predictors for each of the12 PDs. However, the associations between NEO-FFI scores and the DSM-VI-TR PD criteria were rather modest. Support could not be obtained for the view that separate extreme scores on basic personality traits or combinations of such scores in five-factor profiles will provide adequate screening possibilities for PDs. The SAPAS-SR has better screening potential than the NEO-FFI or the SAPAS-SR and the NEO-FFI together.

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