Готові списки джерел за темами / Physical quality of speed

Добірка наукової літератури з теми "Physical quality of speed"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Physical quality of speed"

1

Xavier Dias, Letícia Betânia, Pedro Afonso de Melo Queiroz, Thaís Cardoso de Castro, Marco Antonio Moreira de Freitas, Érica Fernandes Leão-Araújo, and Warley Marcos Nascimento. "Physiological quality of mechanically harvested chickpea seeds." Revista Engenharia na Agricultura - Reveng 29 (March 26, 2021): 28–35. http://dx.doi.org/10.13083/reveng.v29i1.10907.

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Our objective was to evaluate the occurrence of mechanical damage in chickpea seeds with the combination of two harvester speeds (2.5 and 3.5 km.h-1) and three adjustments for rotor rotation speeds (500, 700, and 850 rpm). Harvesting was carried out in a seed production field. Seeds were evaluated for purity, germination (G), first count (FC), germination speed index (GSI), hypochlorite, electrical conductivity, and tetrazolium tests. There was an effect of harvester speeds on seed physiological quality for the first count (FC), germination (G), germination speed index (GSI), especially when combining with high rotor rotation speed. In these cases, the speed of 2.5 km.h-1 resulted in lower values. This harvester speed also had worse results when combining with 850 rpm for purity and hypochlorite tests. The tetrazolium test was not efficient in identifying differences in seed quality. There was no significant interaction between harvester speeds and rotor rotation speeds for the conductivity test. Evaluating the harvester speed’s isolated effect (3.5 km.h-1), we identified problems in seed vigor due to the higher value of exudates in the electrical conductivity test. Low harvester speed (2.5 km.h-1) associated with high rotor rotation speeds (700 and 850 rpm) causes a reduction of the physical and physiological quality of seeds.
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2

Paixão, Carla S. S., Camila P. Chrispin, Rouverson P. da Silva, Lucas A. S. Girio, and Murilo A. Voltarelli. "Physical and physiological quality of soybean seeds at three speeds of the harvester." Revista Brasileira de Engenharia Agrícola e Ambiental 21, no. 3 (March 2017): 214–18. http://dx.doi.org/10.1590/1807-1929/agriambi.v21n3p214-218.

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ABSTRACT The mechanized harvesting of soybean is a fundamental tool in the production process of this crop and, if not performed properly, it can result in severe mechanical damage to the seeds, causing significant losses at harvest, particularly due to reduced quality. Thus, this study aimed to evaluate the physical and physiological quality of soybean seeds at three speeds of the harvester, using statistical process control. The experiment was carried out in the municipality of Conceição das Alagoas, MG, Brazil, with three travel speeds: 4.5, 5.0 and 5.5 km h-1. The seed samples were collected at 20 min intervals for 3 h of operation, with a total of 9 samples for each speed. The evaluations were performed based on the following parameters: grain temperature, water content, concave opening, cylinder rotation, mechanical damage and electrical conductivity. The physical and physiological quality of the seeds was dependent on the displacement speed of machine. The highest speed led to lower mechanical damage and higher vigor of soybean seeds.
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3

Wang, Chuan Sheng, De Wei Zhang, Hui Guang Bian, Xiao Bo Wang, and Lei Guo. "Experimental Study of Screw Speed Effects on Quality of Short Fiber-Rubber Composite Material." Advanced Materials Research 221 (March 2011): 369–72. http://dx.doi.org/10.4028/www.scientific.net/amr.221.369.

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During the extruding process of short fiber-rubber composite material, screw speed is an important factor which influences the orientation of short fibers, as well as the physical and mechanical properties of short fiber-rubber composite material. The effects of different screw speeds on physical and mechanical properties of short fiber-rubber composite material have been studied by experimental study. In the experiments, the screw speeds were 10rpm, 15rpm, 20rpm, 25rpm and 30rpm respectively. The experimental results indicated that when the screw speed was 15rpm, the physical and mechanical properties of short fiber-rubber composite material are better.
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4

Zhang, De Wei, Chuan Sheng Wang, and Guang Yi Lin. "Effects of Rotor Speed on Manufacturing Process of Short Fiber-Rubber Composite Material." Advanced Materials Research 221 (March 2011): 350–55. http://dx.doi.org/10.4028/www.scientific.net/amr.221.350.

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Rotor Speed is an important factor which impacts the mixing process and quality of mixed rubber greatly. The effects of different rotor speeds on manufacturing process of short fiber-rubber composite material have been studied by experimental study. In the experiments, the rotor speeds were 50rpm, 60rpm, 70rpm and 80rpm respectively. The experimental results indicated that the mixed rubber after vulcanized had better physical and mechanical properties as the rotor speed was 70rpm. So the rotor speed that is 70rpm has been chosen for manufacturing short fiber-rubber composite material.
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Huang, Shihao, Yahui Su, and Shiting Wu. "IMPACT OF HIGH-INTENSITY FOOTBALL ON THE COMPREHENSIVE QUALITY OF PHYSICAL FUNCTIONS." Revista Brasileira de Medicina do Esporte 28, no. 3 (June 2022): 217–20. http://dx.doi.org/10.1590/1517-8692202228032021_0442.

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ABSTRACT Introduction: Football is a high-intensity, high-speed, high-strength physical exercise. It can effectively improve the overall qualities of endurance, strength, and speed. Objective: To determine whether football training impacts the physical function and quality of students. Methods: We use the physiological and biochemical indicators of football players to monitor their physical functions. Results: Football training can significantly improve the physical fitness of college students in terms of cardiopulmonary function, endurance, explosive power, flexibility, body balance, and coordination sensitivity. Conclusion: Football training can significantly reduce the basic heart rate of college students. It also significantly improves the flexibility and coordination sensitivity of these students. Level of evidence II; Therapeutic studies - investigation of treatment results.
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6

Cavar, Mile, Marin Corluka, Ivana Cerkez, Zoran Culjak, and Damir Sekulic. "Are Various Forms of Locomotion-Speed Diverse or Unique Performance Quality?" Journal of Human Kinetics 38 (September 1, 2013): 53–61. http://dx.doi.org/10.2478/hukin-2013-0045.

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Abstract The forward-sprint is considered to be, and is regularly performed as, a unique measure of “on-ground” linearspeed performance. Thus far, no investigation has simultaneously studied different forms of linear-speed or investigated whether different forms of linear-speed should be observed as unique performance quality. The purpose of this study was to determine (I) the achievements (i.e. execution time), and (II) the reliability and inter-relationships between various linear-speed performances. The participants were 42 male physical education students with substantial sport-specific backgrounds. We applied a total of six tests: three quadrupedal (supine backward, supine forward, and pronate backward locomotion) and three bipedal-performances (forward sprinting, backward sprinting, lateral shuffling). All of the tests showed appropriate reliability parameters (Cronbach Alpha ranged from 0.91 to 0.97; Inter-Item-R 0.78-0.92; Coefficient-of-Variation 1.3-9.1). The tests used in this study shared between 9% and 50% of the common variance. Our results suggest that different activities require activity-specific tests of linear-speed. This is particularly significant in those sports and activities in which quadrupedal locomotion patterns are highly important (wrestling, physically trained military services, law enforcement, fire and rescue, protective services).
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7

Apor, Péter, and László Babai. "Physical activity diminishes aging-related decline of physical and cognitive performance." Orvosi Hetilap 155, no. 21 (May 2014): 817–21. http://dx.doi.org/10.1556/oh.2014.29838.

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Aging-related decline of muscle force, walking speed, locomotor coordination, aerobic capacity and endurance exert prognostic impact on life expectancy. Proper use of training may diminish the aging process and it may improve the quality of life of elderly persons. This paper provides a brief summary on the impact of training on aging-related decline of physical and cognitive functions. Orv. Hetil., 2014, 155(21), 817–821.
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8

Ismahmudi, Ramdhany, and Alfi Ari Fakhrurizal. "Relationship between Active Physical Exercise And Sleep Quality With Physical Fatigue in Elderly." South East Asia Nursing Research 2, no. 1 (March 31, 2020): 11. http://dx.doi.org/10.26714/seanr.2.1.2020.11-15.

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Physical exercise is any form of activity carried out by an individual, especially the elderly, to improve physical fitness and physical conditions, with the main objective being to increase strength, cardiorespiratory endurance, speed, skills,, and flexibility. In the elderly, physical training aims to improve the quality of life, so they can get through their old days in a fit. The purpose of this study is to find out how the relationship between active physical activity and sleep quality with physical fatigue that occurs in the elderly in the working area. This research is a descriptive qualitative study using a cross-sectional study approach. Sampling is done by the method of Total Sampling, where all respondents will be involved in research activities, with a total sample of 125 respondents. The research activity was carried out for approximately 1 month starting from July 23-August 24, 2019 at the Harapan Baru Health Center in Samarinda. The result of this research showed the significant relationship between physical activity with fatigue.
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9

Langlois, Francis, Thien Tuong Minh Vu, Marie-Jeanne Kergoat, Kathleen Chassé, Gilles Dupuis, and Louis Bherer. "The multiple dimensions of frailty: physical capacity, cognition, and quality of life." International Psychogeriatrics 24, no. 9 (April 25, 2012): 1429–36. http://dx.doi.org/10.1017/s1041610212000634.

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ABSTRACTBackground: Frailty is a complex health state of increased vulnerability associated with adverse outcomes such as disability, falls, hospitalization, and death. Along with physical impairments, cognition and quality of life may be affected in frail older adults. Yet, evidence is still lacking. The aim of this study was to compare frail and non-frail older adults on physical, cognitive, and psychological dimensions.Methods: Thirty-nine frail and 44 non-frail elders were compared on several measures of physical capacity, cognition, and quality of life. Frailty status was based on a geriatric examination and scored using the Modified Physical Performance Test.Results: After controlling for demographic and medical characteristics, physical capacity measures (i.e. functional capacities, physical endurance, gait speed, and mobility) were significantly lower in frail participants. Frail participants showed reduced performances in specific cognitive measures of executive functions and processing speed. On the quality of life dimension, frail elders reported poor self-perceptions of physical capacity, cognition, affectivity, housekeeping efficacy, and physical health.Conclusion: In addition to the reduced physical capacity, frailty might affect selective components of cognition and quality of life. These dimensions should be investigated in intervention programs designed for frail older adults.
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De Maddis, Manuela, Vincenzo Lunetto, Valentino Razza, and Pasquale Russo Spena. "Infrared Thermography for Investigation of Surface Quality in Dry Finish Turning of Ti6Al4V." Metals 12, no. 1 (January 14, 2022): 154. http://dx.doi.org/10.3390/met12010154.

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The machining of titanium alloys always raises issues because of their peculiar chemical and physical characteristics as compared to traditional steel or aluminum alloys. A proper selection of parameters and their monitoring during the cutting operation makes it possible to minimize the surface roughness and cutting force. In this experimental study, infrared thermography was used as a control parameter of the surface roughness of Ti6A4V in dry finish turning. An analysis of variance was carried out to determine the effect of the main cutting parameters (cutting speed and feed rate) on the surface roughness and cutting temperature. In the examined range of the machining parameters, cutting speed and feed were found to have a primary effect on the surface roughness of the machined parts. Cutting speed also significantly affected the temperature of the cutting region, while feed was of second order. Higher cutting speeds and intermediate feed values gave the best surface roughness. A regression analysis defined some models to relate the cutting temperature and surface roughness to the machining parameters. Infrared thermography demonstrated that the cutting temperature could be related to roughness.
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Дисертації з теми "Physical quality of speed"

1

Harvey, Scott A. "Low-speed wind tunnel flow quality determination." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5584.

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Approved for public release; distribution is unlimited.
lected points. Incorporated instrumentation includes pressure transducers attached to a pitot-static tube, wall static pressure taps, and a pressure rake; a hotwire anemometry system, and a linear traverse system. These were integrated with a data acquisition (DAQ) processor with analog to digital conversion and digital I/O boards, and controlled using in-house developed LabVIEW software. Testing showed a maximum axial velocity of 38 m/s, which is 84% of the tunnel?s rated speed. The 2-D flow uniformity was within ±7% by pressure rake, and ±3% with a turbulence intensity ?0.11% at full speed using a CTA, affirming the tunnel?s viability as a demonstration platform. Spectral density plots in the boundary layer exhibit typical behavior of fully developed equilibrium turbulent flow with an intertial sub-range present. Future testing of a flat-plate wake for drag modification is planned.
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2

Bertram, Stacie C. Hines Edward R. "Quality in physical therapy education." Normal, Ill. Illinois State University, 2001. http://wwwlib.umi.com/cr/ilstu/fullcit?p3064478.

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Thesis (Ph. D.)--Illinois State University, 2001.
Title from title page screen, viewed April 13, 2006. Dissertation Committee: Edward R. Hines [Chair], James Palmer, William Tolone, Phyllis McCluskey-Titus, Mary Jo Mays. Includes bibliographical references (leaves 135-143) and abstract. Also available in print.
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3

Toots, Annika. "Gait speed and physical exercise in people with dementia." Doctoral thesis, Umeå universitet, Fysioterapi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-128733.

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The aim of the thesis was to investigate the importance of physical function for survival in very old people, and furthermore, whether physical exercise could influence physical function, cognitive function, and dependence in activities of daily living (ADLs) in older people with dementia living in nursing homes. The world’s population is ageing. Given the age-related increase in chronic disease such as dementia   and compounded by physical inactivity, the prevalence in need for assistance and are in daily activities in older people is expected to increase in the near future. Gait speed, a measure of physical function, has been shown to be associated with health and survival. However, studies of the  oldest  people  in  the  population,  including  those  dependent  in ADLs,  living  in  nursing  homes  and  with  dementia,  are  few.  Moreover,  in people  with  dementia  physical  exercise  may  improve  physical and  cognitive function and  reduce  dependence  in  ADLs.  Further large studies with high methodological quality and with designs incorporating attention control groups are needed in this population. In addition, no study has compared exercise effects between dementia types. The association between gait speed and survival was investigated in a population based cohort study of 772 people aged 85 years and over. Usual gait speed was assessed over 2.4 metres and mortality followed for five years. Cox proportional hazard regression models adjusted for potential confounders were used in analyses. Effects of physical exercise in people with dementia were investigated in a randomised controlled trial that included 186 participants with various dementia types living in nursing homes. Participants were allocated to the High-Intensity Functional Exercise  (HIFE) program or a seated control activity, which both lasted 45 minutes and held five times  fortnightly for four months. Dependence in ADLs was assessed with Functional Independence Measure and Barthel ADL Index, and balance with Berg Balance Scale. Usual gait speed was evaluated over 4.0 metres in two tests; first using habitual walking aid if any, and thereafter without walking aid and with minimum living support. Global cognitive function was assessed using the Mini-Mental State Examination, the Alzheimer’s Disease Assessment Scale-Cognitive subscale, and   executive function using Verbal fluency. Blinded testers performed assessments at baseline, four (directly after intervention completion) and seven months. Analyses used linear mixed models in agreement with the intention-to-treat principle. Gait speed was found to be an independent predictor of five-year all-cause mortality, where inability to complete the gait test or a gait speed below 0.5 iv meters per second (m/s) was associated with higher mortality risk. In analyses of exercise effects on ADLs there was no difference between groups in the complete sample. Interaction analyses showed a difference in exercise effect according to dementia type at seven months. Positive between-group exercise effects were found for dependence   in ADLs in participants with non-Alzheimer’s type of dementia (non-AD) at four and seven months. In balance, a difference between groups was found at four but not at seven months in the complete  sample, and interaction analyses indicated a difference in effect according to dementia type at four and seven months. Positive between-group exercise effects were found in participants with non-AD.  No difference between groups in gait speed was found in the complete sample, where the majority habitually walked with a walking aid. In interaction analyses exercise effects differed according to walking aid use. Positive between-group exercise effects in gait speed were found in participants that walked unsupported at four and seven months. No difference between groups in cognitive function was found in the complete sample. The effects of exercise on gait speed and cognitive function did not differ according to sex, cognitive level, or dementia type. In conclusion, among people aged 85 or older, including those dependent in ADLs and with dementia, gait speed seems to be a useful clinical indicator of health status. Inability to complete the gait test or a gait speed below 0.5 m/s appears to be associated with higher five-year mortality risk. In older people with mild to moderate dementia living in nursing homes, a four-month high-intensity functional exercise program appeared to attenuate loss of dependence in ADLs and improve balance, albeit only in participants with non-AD type of dementia. Further studies are needed to validate this result. Furthermore, exercise had positive effects on gait speed when tested unsupported, in contrast to when walking aids or minimum support were used. The result implies that the use of walking aids in the gait speed test may conceal exercise effects. The exercise program had no superior effects on global cognition or executive function when compared with an attention control activity. This thesis suggests that, in older people with dementia, exercise effects on physical function rather than cognitive function may explain effects on dependence in ADLs.
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4

Afshar, A. F. S. "Design of novel cells to simulate high speed electrodeposition." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/6940.

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5

Wood, David John Dudley. "Some aspects of the high-speed electrodeposition of metals." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/25905.

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The literature concerning the fast electrodeposition of metals has been reviewed with particular attention to the electrodeposition of nickel. A study of the electrodeposition of nickel has been carried out in concentrated Ni sulphamate solutions at 50-70°C in parallel plate cells at Reynolds numbers of up to 15,000. The cell design was substantiated by a preliminary study of the electrodeposition of copper. Additional studies have been made of current distribution in both the nickel and acid copper systems using segmented electrodes. Additional studies of mass transport have been made in the nickel system, as have polarisation studies. It has been shown that in the case of acid copper the system performs under mass transport control and that the current distribution is as expected under these conditions.
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6

Zarari, Maria Prodromou. "Intermolecular forces from the speed of sound in gases." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/8828.

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7

Chughtai, Mohsan Niaz. "Study of physical layer impairments in high speed optical networks." Licentiate thesis, KTH, Fotonik (Stängd 20120101), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94186.

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The work done in this thesis focuses on the impact of transmission impairments in high speed optical networks. Specifically it focuses on the impact of nonlinear impairments in long haul fiber optic data transmission. Currently deployed fiber optic transmission networks are running on NRZ OOK modulation formats with spectral efficiency of only 1 bit/symbol. To achieve spectral efficiency beyond 1 bit/symbol, fiber optic communication systems running on advanced modulation formats such as QPSK are becoming important candidates. The practical deployment of QPSK based fiber optic communication system is severely limited by Kerr-induced nonlinear distortions such as XPM and XPolM, from the neighboring NRZ OOK channels. In this thesis we focus on the impact of nonlinear impairments (XPM and XPolM) in fiber optical transmission systems running on QPSK modulation with both differential and coherent detection. The dependence of impact of nonlinear impairments on SOP, baud rate of the neighboring NRZ OOK channels and PMD in the fiber, is analyzed in detail through numerical simulations in VPItransmission Maker®. In this thesis we also analyze digital signal processing algorithms to compensate linear and nonlinear impairments in coherent fiber optic communication systems. We propose a simplification of the existing method for joint compensation of linear and nonlinear impairments called "digital back propagation". Our method is called "weighted digital back propagation". It achieves the same performance of conventional digital back propagation with up to 80% reduction in computational complexity.In the last part of the thesis we analyze the transmission performance of a newly proposed hybrid WDM/TDM protection scheme through numerical simulation in VPItransmission Maker®. The transmission performance of the hybrid WDM/TDM PON is limited by impairments from passive optical devices and fiber optical channel.

QC 20120514

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Lim, Hiam Hiok. "Intelligent quality of service algorithms for high speed networks." Monash University, School of Computer Science and Software Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/8275.

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9

Rahman, Fahmida. "EVALUATE PROBE SPEED DATA QUALITY TO IMPROVE TRANSPORTATION MODELING." UKnowledge, 2019. https://uknowledge.uky.edu/ce_etds/80.

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Probe speed data are widely used to calculate performance measures for quantifying state-wide traffic conditions. Estimation of the accurate performance measures requires adequate speed data observations. However, probe vehicles reporting the speed data may not be available all the time on each road segment. Agencies need to develop a good understanding of the adequacy of these reported data before using them in different transportation applications. This study attempts to systematically assess the quality of the probe data by proposing a method, which determines the minimum sample rate for checking data adequacy. The minimum sample rate is defined as the minimum required speed data for a segment ensuring the speed estimates within a defined error range. The proposed method adopts a bootstrapping approach to determine the minimum sample rate within a pre-defined acceptance level. After applying the method to the speed data, the results from the analysis show a minimum sample rate of 10% for Kentucky’s roads. This cut-off value for Kentucky’s roads helps to identify the segments where the availability is greater than the minimum sample rate. This study also shows two applications of the minimum sample rates resulted from the bootstrapping. Firstly, the results are utilized to identify the geometric and operational factors that contribute to the minimum sample rate of a facility. Using random forests regression model as a tool, functional class, section length, and speed limit are found to be the significant variables for uninterrupted facility. Contrarily, for interrupted facility, signal density, section length, speed limit, and intersection density are the significant variables. Lastly, the speed data associated with the segments are applied to improve Free Flow Speed estimation by the traditional model.
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Prasanna, Shreya. "The influence of music on movement speed in chronic pain." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86955.

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Movement slowing among individuals with fibromyalgia (FM) adds to the burden of the condition. Music is known to influence movement speed in healthy individuals and it is plausible that it can be used to counteract slow movements in individuals with FM. Study objectives were to estimate a) whether walking to music of different tempi alters the gait speed in individuals with FM; b) whether music alters the mood, pain intensity, pain affect and perceived exertion in these individuals. A single subject research design was used. Eight women with FM walked under two different music conditions (fast and slow music) and a control (no music) condition. Outcome measures included gait speed, pain intensity, affect, mood and perceived exertion. Results showed that four subjects walked faster with fast music. No change was noted in the clinical measures. Music may be useful to improve gait speed in people with FM.
Le ralentissement du mouvement chez les personnes atteintes de fibromyalgie (FM) constitue un fardeau qui s'ajoute aux symptômes de cette maladie. Il est reconnu que la musique peut influencer la vitesse du mouvement chez les individus en bonne santé ; il est plausible qu'elle puisse aussi être utilisée pour contrecarrer le ralentissement des mouvements chez les individus atteints de FM. Les objectifs de cette étude consistaient à estimer a) si marcher en écoutant de la musique à différents tempi modifie la vitesse de marche chez les personnes atteintes de FM; b) si la musique modifie l'humeur, l'intensité de la douleur, l'émotion liée à la douleur et l'effort perçu par ces individus pendant leur marche. Une étude prospective à protocoles individuels (single subject research design) a été réalisée. Huit femmes atteintes de FM ont marché sous deux conditions musicalement différentes (musique lente ou rapide) et sous une condition contrôle (pas de musique). Les variables d'intérêts mesurées comprenaient la vitesse de marche, l'intensité de la douleur, l'émotion liée à la douleur, l'humeur et l'effort perçu. Les résultats ont montré que quatre sujets ont marché plus rapidement lorsqu'ils écoutaient la musique rapide. Aucun changement n'a été noté dans les mesures cliniques. Ces résultats indiquent que la musique pourrait être utilisée afin d'améliorer la vitesse de marche chez les personnes atteintes de FM.
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Книги з теми "Physical quality of speed"

1

Labrecque, Ellen. Speed. London: Raintree, 2013.

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2

1933-, Ward Robert D., Téllez Tom 1933-, and Dintiman George B, eds. Sports speed. 2nd ed. Champaign, Ill: Human Kinetics, 1997.

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3

1933-, Ward Robert D., ed. Sports speed. 3rd ed. Champaign, IL: Human Kinetics, 2003.

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4

Paul, Mason. Improving speed. New York: Powerkids Press, 2011.

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5

Paul, Mason. Training for sport: Improving speed. London: Wayland, 2010.

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6

Bailey, Joseph V. The Speed Trap. New York: HarperCollins, 2007.

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7

Trusler, J. P. M. Physical acoustics and metrology of fluids. Bristol [England]: Adam Hilger, 1991.

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8

Xiaolei, Guo, ed. Quality of service control in high-speed networks. New York: Wiley, 2002.

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Great Britain. Parliament. House of Commons. National Audit Office. Improving the speed and quality of asylim decisions. London: Stationery Office, 2004.

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10

Barnett, Rosalind C. Men, family-role quality, job-role quality and physical health. Wellesley, MA: Wellesley College, Center for Research on Women, 1991.

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Частини книг з теми "Physical quality of speed"

1

Bamber, J. C. "Speed of Sound." In Physical Principles of Medical Ultrasonics, 167–90. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470093978.ch5.

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McKenzie, Blair M., Judith M. Tisdall, and Wendy H. Vance. "Soil Physical Quality." In Encyclopedia of Agrophysics, 770–77. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3585-1_153.

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Li, Sheng S. "High-Speed III–V Semiconductor Devices." In Semiconductor Physical Electronics, 455–502. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4613-0489-0_15.

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Boyd, Claude E. "Physical Properties of Water." In Water Quality, 1–19. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23335-8_1.

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Boyd, Claude E. "Physical Properties of Water." In Water Quality, 1–19. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17446-4_1.

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Boyd, Claude E. "Physical Properties of Water." In Water Quality, 5–20. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4485-2_2.

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Askar, Ahmed, and Hans Treptow. "Physical Measurements." In Quality Assurance in Tropical Fruit Processing, 57–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77687-8_3.

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Mallikarjunan, P., and Y. C. Hung. "Physical and Ultrastructural Measurements." In Quality in Frozen Foods, 313–39. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5975-7_16.

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Kutílek, Miroslav. "On Precision and Quality." In Physical Methods in Agriculture, 1–10. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0085-8_1.

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Požela, Juras. "Technological and Physical Limitations on Transistor Miniaturization." In Physics of High-Speed Transistors, 35–47. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4899-1242-8_2.

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Тези доповідей конференцій з теми "Physical quality of speed"

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Barra, Alexandre Almeida, Ana Silvia Diniz Makluf, Elyonara Mello Figueiredo, Danielle Aparecida Gomes Pereira, and Cristóvão Pinheiro Barros. "INFLUENCE OF PHYSICAL ACTIVITY ON QUALITY OF LIFE OF BREAST CANCER PATIENTS." In Scientifc papers of XXIII Brazilian Breast Congress - 2021. Mastology, 2021. http://dx.doi.org/10.29289/259453942021v31s1095.

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Introduction: Breast cancer is the most common neoplasm among women. As a consequence of the increased number of cancer diagnoses, and concomitant mortality reductions for most types of cancer many patients live with physical and psychosocial problems associated with the disease and its treatment that may compromise their quality of life (QoL). Exercise has been recommended as part of standard care for patients with cancer to help prevent and manage physical and psychosocial problems and improve QoL. Objectives: The objective of the current study was to compare the impact of physical activity practice in women with breast cancer, through indicators of quality of life. Methods: This is a randomized study with breast cancer patients in a large general hospital in southeastern Brazil. The questionnaires were applied regarding function and quality of life (EORTC QLQ-C30 and BR-23). Patients were randomly allocated into two groups: control, without intervention and treatment group, with the practice of physical exercises and nutritional orientation. Physical activity was performed for three hours/week through active-assisted exercises of flexion, abduction, extension, and rotation of upper limbs and treadmill walking at a speed tolerated by the patient. After six months of participation, all patients were reassessed, with blindness of the investigator. Results: The study did not reveal statistical difference in the constructs cited (p>0.05) between the control group and the treatment group regarding “Global Health Status” “Functional Scale” and “Scale of Symptoms “, however the patients in physical activity presented better mood and confidence being more adapted to face the challenge of the disease. Conclusions: The practice of physical activity showed no benefit in improving quality of life and functional capacity in patients with breast cancer in the evaluation by questionnaires in a short period established, however, showed favorable trends for improvement in successive evaluations.
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Nicolaou, Panicos A., and Deborah L. Thurston. "Machining: Quality, Cost and Environmental Estimation and Tradeoffs." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/dfm-14010.

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Abstract The machining process affects manufacturing cost, product quality and the environment. This paper presents a method for formulating a mathematical model for first estimating quality, cost and environmental impacts of two machining operations (end milling and drilling), and then for tradeoff decision making. The milling quality estimation model is developed through virtual experimentation on a simulation model and the drilling quality estimation model through physical experimentation. Cost is estimated through an activity based costing approach. Environmental BOD and FOG impacts are estimated through stoichiometric analysis of cutting fluids. Inputs include material choice, feed rate, speed and cutting fluids. A case study of an automotive steering knuckle is presented.
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Kurzke, Joachim. "Correlations Hidden in Compressor Maps." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45519.

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Realistic compressor maps are the key to high quality gas turbine performance calculations. When modeling the performance of an existing engine then these maps are usually not known and must be approximated by adapting maps from literature to either measured data or to other available information. There are many publications describing map adaptation processes, simple ones and more sophisticated physically based scaling rules. There are also reports about using statistics, genetic algorithms, neural networks and even morphing techniques for re-engineering compressor maps. This type of methods does not consider the laws of physics and consequently the generated maps are valid at best in the region in which they have been calibrated. This region is frequently very narrow, especially in case of gas generator compressors which run in steady state always on a single operating line. This paper describes which physical phenomena influence the shape of speed and efficiency lines in compressor maps. For machines operating at comparatively low speeds (so that the flow into each stage is subsonic), there is usually considerable range between choke and stall corrected flow. As the speed of the machine is increased the range narrows. For high-speed stages with supersonic relative flow into the rotor the efficiency maximum is where the speed line turns over from vertical to lower than maximum corrected flow. At this operating condition the shock is about to detach from the leading edge of the blades. The flow at a certain speed can also be limited by choking in the compressor exit guide vanes. For high pressure ratio single stage centrifugal compressors this is a normal case, but it can also happen with low pressure ratio multistage boosters of turbofan engines, for example. If the compressor chokes at the exit, then the specific work remains constant along the speed line while the overall pressure ratio varies and that generates a very specific shape of the efficiency contour lines in the map. Also in other parts of the map, the efficiency varies along speed lines in a systematic manner. Peculiar shapes of specific work and corrected torque lines can reveal physically impossibilities that are difficult to see in the standard compressor map pictures. Compressor maps generated without considering the inherent physical phenomena can easily result in misleading performance calculations if used at operating conditions outside of the region where they have been calibrated. Whatever map adaptation method is used: the maps created in such a way should be checked thoroughly for violations of the underlying laws of compressor physics.
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Wang, Hongcheng, and James A. Stori. "A Metric-Based Approach to 2D Tool-Path Optimization for High-Speed Machining." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33610.

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Conventional tool-path generation strategies are readily available to generate geometrically feasible trajectories. Such approaches seldom take into consideration physical process concerns or dynamic system limitations. In the present work, an approach for improving a geometrically feasible tool-path trajectory based on quantifiable process metrics is developed. Two specific measures of toolpath quality are incorporated into the iterative improvement algorithm: instantaneous path curvature and instantaneous cutter engagement. These metrics are motivated by a desire to minimize acceleration requirements and maintain a stable steady-state cutting process during high-speed machining. The algorithm has been implemented for two-dimensional contiguous end-milling operations with flat end-mills, and case studies are presented to illustrate the approach.
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Dinh, Thien X., and Yoshifumi Ogami. "Multieffects on Mixing Quality of an Active Micromixer." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37155.

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The convective mixing performance of an active micromixer is analyzed by using computational fluid dynamics (CFD). The mixer consists of a Y-shaped channel and an N-paddle (3, 4, and 5) rotor with radius R suspended in the junction of the channel. Numerical simulations are performed for a wide range of rotation speed of the rotor, ω, and mean velocity in the mixer, U. The asymptotic mixing performance is investigated by means of Lagrangian particle tracking simulation, stretching of a material line, dispersive and distributive mixing efficiencies. The results show that the mixing performance depends on the combined variable ωR/U, whereas paddle number has ignorable effects. Physically, the convective ratio of rotation speed to mean velocity governs the mixing process in the mixer. Contrastively, paddle number affects significantly to pressure loss and fluid torque exercising on the rotor. The time-averaged fluid torque depends linearly on rotation speed regardless of flow rate. Pressure loss relates linearly to flow rate, negligibly to rotation speed. It shows that a smaller paddle number produces lesser pressure loss and fluid torque for the same mixing efficiency.
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Wagner, Robert, Kai Dönnebrink, Felix Reinker, Karsten Hasselmann, Jonas Rejek, and Stefan aus der Wiesche. "A Modular Low-Speed Wind Tunnel With Two Test Sections and Variable Inflow Angle." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50232.

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A modular low-speed wind tunnel system was designed and developed. Due to the modular concept, the wind tunnel permitted open-jet operation, cascade testing or closed-circuit operation. The closed-circuit wind tunnel had two test sections, and it had a high quality test-section with variable flow angle that is particular valuable for airfoil or blade testing. Physical calibration of the wind tunnel facility validated the design rules and CFD methods used and demonstrated that these techniques can be employed successfully for future wind tunnel designs. A detailed study of the thermal behavior of the closed-circuit wind tunnel was conducted. A feedback control method based on a PI control law was developed and tested for the wind tunnel speed.
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Kowalczyk, R., and W. Zębala. "Analysis of laser cutting speed influence on the surface quality and shape deviation of steel parts." In Symposium on Photonics Applications in Astronomy, Communications, Industry and High-Energy Physics Experiments, edited by Ryszard S. Romaniuk. SPIE, 2014. http://dx.doi.org/10.1117/12.2070200.

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Park, Jongwoo, Jeonghoon Kim, Minhyeok Choe, Hyewon Shim, Wooyeon Kim, Sangmin Park, Sangchul Shin, et al. "Scenario-based set-level HTOL test (ASH III) for product quality and reliability qualifications on high-speed APs." In 2016 IEEE International Reliability Physics Symposium (IRPS). IEEE, 2016. http://dx.doi.org/10.1109/irps.2016.7574583.

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Contin, Antonella, and Valentina Galiulo. "What is the quality of a city? Ways of thinking spaces that change." In Post-Oil City Planning for Urban Green Deals Virtual Congress. ISOCARP, 2020. http://dx.doi.org/10.47472/pjow6960.

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Understanding the effects of a metropolis' changes in scale - the rate of growth and its speed - rather than pursuing the search for optimal city size, is mandatory. The New Urban Agenda discussed performance dimensions of the contemporary city’s functioning mode, knowing that place quality derives from a mutual effect with the society that uses it. However, our research focuses on how city performance dimensions can be measured to establish the values of the metropolitan form that are capable of endowing metropolitan projects with meaning. The Metropolitan Paradigm of inter-scalar connection and the Metropolitan Architecture Project Hybrid Typology are the references to measure the metropolis’ performance. The Metropolitan Paradigm concerns the five city dimensions: physical, economic, energetic, social and governance. In particular, the aim of the paper is to study the physical metropolitan framework and its impact on the lives of metropolitan inhabitants, socio-economic flows and the meaning of the concept of "environment" today. The city is still analysed as a spatial phenomenon represented by data/quantities related to space. Nevertheless, the value of form plays a fundamental role within the Metropolitan Discipline at all scales, as spatial relationships within metropolitan settlements are increasingly not metric but relational. In conclusion, we study the connection between history and geography, environmental issues, the Metropolitan Structural Paradigm, and the new Public Realm heterogeneous elements to represent the metropolitan quality and living-related values that constitute the Metropolitan Democracy’s opportunity.
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Ishihama, Masao, and Hiromitsu Sakurai. "Motor Vehicle Exterior Sound Quality Improvement for Indoors." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14041.

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The objectives of this study are these three items. 1) To find better indices than dB(A) for representing annoyances caused by motor vehicle traffic noise along highways. 2) To find the frequency range of motor vehicle exterior noise that should primarily be controlled to achieve better indoor sound environment along highways. 3) To find suitable vehicle driving conditions for evaluating indoor sound environment. To obtain the desired results psycho-acoustic experiments were conducted. Firstly, sound samples were collected with microphones placed at such locations as on a sidewalk, in front of a small house and at the center of a room inside of the house. The number of test vehicles was fifteen, consisting of six motorcycles and nine passenger cars. The driving conditions were full acceleration and mild acceleration usually found in normal traffic flow. Secondly, semantic differentiation method was used. Ten pairs of adjectives were used to scale the impressions of each sound sample. Finally, physical characters of the sound samples and their subjective evaluations were compared. The results were obtained as follows. 1) Six sound samples got more uncomfortable impression at indoors. These sound samples were collected by vehicles with sport-type mufflers. 2) The samples that indoor sound quality is degraded than outdoor contain high power in low frequency range below 200 Hz. These low frequency components penetrate through the housing walls more easily than higher frequency components. 3) The degradation of comfort impression was found in mild acceleration conditions. The low frequency components of sound samples for mild acceleration are larger than those for full acceleration. Though the throttle is not fully open in mild acceleration, low engine speed generates low frequency components, and eventually increased indoor sound power in the frequency range. The conclusions drawn from these results are, 1) Indoor sound samples should be included for evaluating sound environment along highways. 2) Mild acceleration is a better driving condition for evaluating indoor sound environment along highways. In this condition, very low engine speed causes low frequency component emission that penetrate into housing more than in heavy accelerating conditions. 3) Engine exhaust systems that emit very loud low-frequency components should be focused upon in regulating traffic noise. 4) Extensive collection and analysis of housing sound insulation, absorption and resonance data along highways are necessary for further investigations. 5) Better psycho-acoustic experiment methods should be developed for investigating sound context effects on panelists.
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Звіти організацій з теми "Physical quality of speed"

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Levine, Linda, Richard Baskerville, Jo Lee Link, Jan Pries-Heje, and Balasubramaniam Ramesh. Discovery Colloquium: Quality Software Development Internet Speed. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada406781.

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Fang, Hanming, Long Wang, and Yang Yang. Competition and Quality: Evidence from High-Speed Railways and Airlines. Cambridge, MA: National Bureau of Economic Research, July 2020. http://dx.doi.org/10.3386/w27475.

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Joshua J. Cogliati and Abderrafi M. Ougouag. Development Status of the PEBBLES Code for Pebble Mechanics: Improved Physical Models and Speed-up. Office of Scientific and Technical Information (OSTI), December 2009. http://dx.doi.org/10.2172/974777.

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Joshua J. Cogliati and Abderrafi M. Ougouag. Development Status of the PEBBLES Code for Pebble Mechanics: Improved Physical Models and Speed-up. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/966172.

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Gates, C. M., and M. R. Beckette. Identification of physical properties for the retrieval data quality objective process. Office of Scientific and Technical Information (OSTI), June 1995. http://dx.doi.org/10.2172/86993.

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Perumalla, Kalyan S., Maksudul Alam, and Devin A. White. Computational Speed and Matching Quality using an Upper Bound on the Normalized Mutual Information. Test accounts, May 2017. http://dx.doi.org/10.2172/1360069.

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Pereira, Mario M., and Bruce D. Slonecker. Global Threat Reduction Initiative Fuel-Thermo-Physical Characterization Project Quality Assurance Plan. Office of Scientific and Technical Information (OSTI), June 2012. http://dx.doi.org/10.2172/1121536.

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Ameta, Gaurav, Sudarsan Rachuri, Xenia Fiorentini, Mahesh Mani, Steven J. Fenves, Kevin W. Lyons, and Ram D. Sriram. Extending the notion of quality from physical metrology to information and sustainability. Gaithersburg, MD: National Institute of Standards and Technology, 2008. http://dx.doi.org/10.6028/nist.ir.7517.

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Rose, K. A. Individual-based modeling of fish: Linking to physical models and water quality. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/634025.

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Doyle, Robert D., and Bruce W. Byars. Lake Whitney Comprehensive Water Quality Assessment, Phase 1B- Physical and Biological Assessment (USDOE). Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/968980.

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