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https://www.readbyqxmd.com/read/27872898/the-impact-of-variable-wind-shear-coefficients-on-risk-reduction-of-wind-energy-projects
#1
Kenneth W Corscadden, Allan Thomson, Behrang Yoonesi, Josiah McNutt
Estimation of wind speed at proposed hub heights is typically achieved using a wind shear exponent or wind shear coefficient (WSC), variation in wind speed as a function of height. The WSC is subject to temporal variation at low and high frequencies, ranging from diurnal and seasonal variations to disturbance caused by weather patterns; however, in many cases, it is assumed that the WSC remains constant. This assumption creates significant error in resource assessment, increasing uncertainty in projects and potentially significantly impacting the ability to control gird connected wind generators...
2016: International Scholarly Research Notices
https://www.readbyqxmd.com/read/27867545/an-evaluation-study-of-research-efficiency-of-the-guangzhou-institute-of-respiratory-diseases-based-on-malmquist-index
#2
Jian-Feng Liao, Juan Wang, Liang Liang, Yong-Ding Wu, Mei-Juan Huang, Tian-Qiang Liu, Lin Zhou, Xin-Wang Wang
BACKGROUND: This study aimed to analyze the dynamic changes of the scientific research innovation efficiency of Guangzhou Institute of Respiratory Diseases (GIRD) during the year 2009-2013 to explore the reason for these changes and give some suggestions on how to improve the overall efficiency of the Institute. METHODS: The panel data used in this study were taken from 19 research teams of GIRD during 2009 to 2013. Data envelopment analysis (DEA) based on Malmquist index (MI) was used to analyze the performance of each research team in terms of productivity changes over time...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27766274/the-relationship-between-humeral-retrotorsion-and-shoulder-range-of-motion-in-baseball-players-with-an-ulnar-collateral-ligament-tear
#3
Bobby Jean S Lee, J Craig Garrison, John E Conway, Kalyssa Pollard, Subhash Aryal
BACKGROUND: Humeral retrotorsion has been investigated in relation to shoulder range of motion (ROM) in healthy baseball players. Currently, there is limited information on the osseous anatomy and development of ulnar collateral ligament (UCL) tears. PURPOSE: To determine the relationship between humeral retrotorsion and shoulder ROM in baseball players with a UCL tear. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Fifty-four baseball players (mean age, 18...
October 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27739388/parent-child-relationship-quality-and-family-transmission-of-parent-posttraumatic-stress-disorder-symptoms-and-child-externalizing-and-internalizing-symptoms-following-fathers-exposure-to-combat-trauma
#4
James Snyder, Abigail Gewirtz, Lynn Schrepferman, Suzanne R Gird, Jamie Quattlebaum, Michael R Pauldine, Katie Elish, Osnat Zamir, Charles Hayes
Transactional cascades among child internalizing and externalizing symptoms, and fathers' and mothers' posttraumatic stress disorder (PTSD) symptoms were examined in a sample of families with a male parent who had been deployed to recent military conflicts in the Middle East. The role of parents' positive engagement and coercive interaction with their child, and family members' emotion regulation were tested as processes linking cascades of parent and child symptoms. A subsample of 183 families with deployed fathers and nondeployed mothers and their 4- to 13-year-old children who participated in a randomized control trial intervention (After Deployment: Adaptive Parenting Tools) were assessed at baseline prior to intervention, and at 12 and 24 months after baseline, using parent reports of their own and their child's symptoms...
November 2016: Development and Psychopathology
https://www.readbyqxmd.com/read/27659068/the-volleyball-athlete-s-shoulder-biomechanical-adaptations-and-injury-associations
#5
Dimitrios Challoumas, Antonio Stavrou, Georgios Dimitrakakis
In volleyball, the dominant shoulder of the athlete undergoes biomechanical and morphological adaptations; however, definitive conclusions about their exact nature, aetiology, purpose and associations with shoulder injury have not been reached. We present a systematic review of the existing literature describing biomechanical adaptations in the dominant shoulders of volleyball players and factors that may predispose to shoulder pain/injury. A thorough literature search via Medline, EMBASE and SCOPUS was conducted for original studies of volleyball players and 15 eligible articles were identified...
September 23, 2016: Sports Biomechanics
https://www.readbyqxmd.com/read/27632891/effectiveness-of-stretching-on-posterior-shoulder-tightness-and-glenohumeral-internal-rotation-deficit-a-systematic-review-of-randomised-controlled-trials
#6
Koya Mine, Takashi Nakayama, Steve Milanese, Karen Grimmer
Posterior shoulder tightness (PST) and glenohumeral internal rotation deficit (GIRD) are common physical impairments in overhead sports, such as baseball, cricket and tennis.(1-4)) PST is clinically measured by passive shoulder horizontal adduction with scapula stabilized in supine or side lying.(5),(6)) GIRD is generally characterised as concurrent deficits of internal rotation (IR) and total arc of motion in dominant side.(7),(8)) Although the mechanisms of PST and GIRD are not clear, it is speculated that they derive from tight posterior glenohumeral capsule and posterior muscles, such as posterior deltoid, infraspinatus and teres minor muscles...
August 24, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27013981/the-art-of-grid-fields-geometry-of-neuronal-time
#7
Andrey L Shilnikov, Andrew Porter Maurer
The discovery of grid cells in the entorhinal cortex has both elucidated our understanding of spatial representations in the brain, and germinated a large number of theoretical models regarding the mechanisms of these cells' striking spatial firing characteristics. These models cross multiple neurobiological levels that include intrinsic membrane resonance, dendritic integration, after hyperpolarization characteristics and attractor dynamics. Despite the breadth of the models, to our knowledge, parallels can be drawn between grid fields and other temporal dynamics observed in nature, much of which was described by Art Winfree and colleagues long before the initial description of grid fields...
2016: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/26983458/trends-in-the-presentation-management-and-outcomes-of-little-league-shoulder
#8
Benton E Heyworth, Dennis E Kramer, Daniel J Martin, Lyle J Micheli, Mininder S Kocher, Donald S Bae
BACKGROUND: With rising participation in youth sports such as baseball, proximal humeral epiphysiolysis, or Little League shoulder (LLS), is being seen with increasing frequency. However, there remains a paucity of literature regarding the causes, natural history, or treatment outcomes of LLS. PURPOSE: To analyze the demographic, clinical, and diagnostic features of a population of LLS patients, with an emphasis on identifying underlying risk factors for the development and recurrence of LLS after nonoperative treatment...
June 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/26955903/relation-between-glenohumeral-internal-rotation-deficit-and-valgus-laxity-of-the-elbow-in-high-school-baseball-pitchers
#9
Tsuyoshi Tajika, Tsutomu Kobayashi, Atsushi Yamamoto, Hitoshi Shitara, Tsuyoshi Ichinose, Daisuke Shimoyama, Noboru Oya, Tsuyoshi Sasaki, Kenji Takagishi
BACKGROUND: There are few literatures describing the association between glenohumeral internal rotation deficits (GIRD) and valgus laxity of the elbow on the throwing side of high school pitchers with and without a history of elbow symptom. METHODS: The passive range of motion of glenohumeral internal and external rotation on bilateral side shoulders was measured in 75 high-school baseball pitchers during the preseason. Using ultrasonography, the width of the ulnohumeral joint of the elbow was measured at 30° of flexion, both at rest and with valgus stress in the pitching side...
March 9, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/26919476/effectiveness-of-stretching-on-posterior-shoulder-tightness-and-glenohumeral-internal-rotation-deficit-a-systematic-review-of-randomised-controlled-trials
#10
Koya Mine, Takashi Nakayama, Steve Milanese, Karen Grimmer
Posterior shoulder tightness (PST) and glenohumeral internal rotation deficit (GIRD) are common physical impairments in overhead sports, such as baseball, cricket and tennis. PST is clinically measured by passive shoulder horizontal adduction with scapula stabilized in supine or side lying. GIRD is generally characterised as concurrent deficits of internal rotation (IR) and total arc of motion in dominant side. Although the mechanisms of PST and GIRD are not clear, it is speculated that they derive from tight posterior glenohumeral capsule and posterior muscles, such as posterior deltoid, infraspinatus and teres minor muscles...
February 26, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/26861672/gird-trrom-and-humeral-torsion-based-classification-of-shoulder-risk-in-throwing-athletes-are-not-in-agreement-and-should-not-be-used-interchangeably
#11
Rod Whiteley, Marc Oceguera
OBJECTIVES: Clinicians commonly interpret the findings of shoulder rotational ranges of motion using various approaches: an apparent reduction in dominant arm internal rotation ("GIRD"), a difference in total rotational range of motion-i.e. differences in the sum of internal and external rotational range (TRROM), and a combination of rotational ROM and torsional difference ("GIRD-torsion"). We have noticed that these approaches are being considered to provide equivalent estimates of shoulder rotational range...
October 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/26645227/air-quality-improvement-during-2010-asian-games-on-blood-coagulability-in-copd-patients
#12
Zili Zhang, Jian Wang, Meihua Guo, Mingmei Xiong, Qipeng Zhou, Defu Li, Jiaze Shu, Wenju Lu, Dejun Sun
Exposure to elevated levels of ambient air pollutants can lead to adverse cardiovascular effects. Perturbation of the coagulation balance is one of the potential mechanisms. However, evidence regarding the impact of improvement in air pollution on blood coagulability in COPD patients has never been reported. Coagulation processes are known to be of relevance for cardiovascular pathology; therefore, this study aimed to investigate the association of short-term air pollution exposure with blood marker (D-dimer) of coagulation...
April 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/26625179/study-design-and-interim-outcomes-of-guangzhou-institute-of-respiratory-disease-copd-biobank
#13
Wenju Lu, Zeguang Zheng, Xindong Chen, Hui Tan, Jian Wang, Zili Zhang, Jinping Zheng, Rongchang Chen, Chenting Zhang, Xiaoming Xu, Yuqin Chen, Quan Yang, Mingmei Xiong, Meihua Guo, Qipeng Zhou, Chun Tang, Yingfeng Wang, Jinmei Ye, Defu Li, Jiaze Shu, Shu Tan, Chuyi Xu, Yan Wang, Ning Lai, Kai Yang, Jiachun Lu, Pixin Ran, Nanshan Zhong
BACKGROUND: GIRD COPD Biobank is a multicenter observational study blood-based database with local characteristics, in order to investigate the causes, risk factors, pathogenesis, prevalence patterns and trends of COPD and promote new pathogenic insights in China. METHODS: We enrolled 855 clinically COPD patients and 660 controls with normal lung function. Extensive data collection has been undertaken with questionnaires, clinical measurements, and collection and storage of blood specimens, following Standard Operating Procedures (SOP)...
2016: COPD
https://www.readbyqxmd.com/read/26609146/the-relationship-between-glenohumeral-internal-rotational-deficits-total-range-of-motion-and-shoulder-strength-in-professional-baseball-pitchers
#14
Nirav H Amin, John Ryan, Stephen D Fening, Lonnie Soloff, Mark S Schickendantz, Morgan Jones
INTRODUCTION: Although the lack of internal rotation (IR) and total range of motion (TRM) has been identified as a significant contributing factor of shoulder injuries, our goal was to determine whether a relationship exists between glenohumeral internal rotational deficits (GIRD), TRM, and shoulder strength in professional baseball pitchers. Our hypothesis was that GIRD with TRM differences within 5° will not lead to decreased shoulder strength; however, a shoulder with >5° of TRM difference with GIRD will lead to decreased shoulder strength...
December 2015: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/26537804/prevention-of-shoulder-injuries-in-overhead-athletes-a-science-based-approach
#15
Ann M Cools, Fredrik R Johansson, Dorien Borms, Annelies Maenhout
The shoulder is at high risk for injury during overhead sports, in particular in throwing or hitting activities, such as baseball, tennis, handball, and volleyball. In order to create a scientific basis for the prevention of recurrent injuries in overhead athletes, four steps need to be undertaken: (1) risk factors for injury and re-injury need to be defined; (2) established risk factors may be used as return-to-play criteria, with cut-off values based on normative databases; (3) these variables need to be measured using reliable, valid assessment tools and procedures; and (4) preventative training programs need to be designed and implemented into the training program of the athlete in order to prevent re-injury...
September 2015: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/26473012/posterior-shoulder-capsules-are-thicker-and-stiffer-in-the-throwing-shoulders-of-healthy-college-baseball-players-a-quantitative-assessment-using-shear-wave-ultrasound-elastography
#16
Tetsuya Takenaga, Katsumasa Sugimoto, Hideyuki Goto, Masahiro Nozaki, Masaki Fukuyoshi, Atsushi Tsuchiya, Atsunori Murase, Tetsuya Ono, Takanobu Otsuka
BACKGROUND: Posterior and posteroinferior capsules in the shoulder joints of throwing athletes have been reported to be thicker in throwing than nonthrowing shoulders, and this has a relationship to glenohumeral internal rotation deficit (GIRD). However, the stiffness of these thickened capsules has not been reported. Shear-wave ultrasound elastography is a new technology that can measure tissue elasticity quantitatively. HYPOTHESIS: The posterior and posteroinferior capsules are stiffer as well as thicker in the throwing shoulders of baseball players than in their nonthrowing shoulders...
December 2015: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/26457571/the-acute-effects-of-hold-relax-proprioceptive-neuromuscular-facilitation-with-vibration-therapy-on-glenohumeral-internal-rotation-deficit
#17
W Steven Tucker, Stephen W Slone
CONTEXT: Clinicians use various stretching techniques to prevent the onset of and treat glenohumeral internal-rotation deficit (GIRD). It is unknown which stretching technique is the most effective. OBJECTIVE: To investigate the acute effects of hold-relax proprioceptive neuromuscular facilitation (PNF) with and without vibration therapy on internal rotation in individuals with GIRD. DESIGN: 2-within (stretch × time) comparison with repeated measures...
August 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/26437144/relationship-of-service-members-deployment-trauma-ptsd-symptoms-and-experiential-avoidance-to-postdeployment-family-reengagement
#18
RANDOMIZED CONTROLLED TRIAL
Callie Brockman, James Snyder, Abigail Gewirtz, Suzanne R Gird, Jamie Quattlebaum, Nicole Schmidt, Michael R Pauldine, Katie Elish, Lynn Schrepferman, Charles Hayes, Robert Zettle, David DeGarmo
This research examined whether military service members' deployment-related trauma exposure, posttraumatic stress disorder (PTSD) symptoms, and experiential avoidance are associated with their observed levels of positive social engagement, social withdrawal, reactivity-coercion, and distress avoidance during postdeployment family interaction. Self reports of deployment related trauma, postdeployment PTSD symptoms, and experiential avoidance were collected from 184 men who were deployed to the Middle East conflicts, were partnered, and had a child between 4 and 13 years of age...
February 2016: Journal of Family Psychology: JFP
https://www.readbyqxmd.com/read/26360827/anatomical-glenohumeral-internal-rotation-deficit-and-symmetric-rotational-strength-in-male-and-female-young-beach-volleyball-players
#19
Michele Forgiarini Saccol, Gabriel Peixoto Leão Almeida, Vivian Lima de Souza
Beach volleyball is a sport with a high demand of shoulder structures that may lead to adaptations in range of motion (ROM) and strength like in other overhead sports. Despite of these possible alterations, no study evaluated the shoulder adaptations in young beach volleyball athletes. The aim of this study was to compare the bilateral ROM and rotation strength in the shoulders of young beach volleyball players. Goniometric passive shoulder ROM of motion and isometric rotational strength were evaluated in 19 male and 14 female asymptomatic athletes...
August 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/26331736/prevention-of-shoulder-injuries-in-overhead-athletes-a-science-based-approach
#20
Ann M Cools, Fredrik R Johansson, Dorien Borms, Annelies Maenhout
The shoulder is at high risk for injury during overhead sports, in particular in throwing or hitting activities, such as baseball, tennis, handball, and volleyball. In order to create a scientific basis for the prevention of recurrent injuries in overhead athletes, four steps need to be undertaken: (1) risk factors for injury and re-injury need to be defined; (2) established risk factors may be used as return-to-play criteria, with cut-off values based on normative databases; (3) these variables need to be measured using reliable, valid assessment tools and procedures; and (4) preventative training programs need to be designed and implemented into the training program of the athlete in order to prevent re-injury...
September 1, 2015: Brazilian Journal of Physical Therapy
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