Journal articles: 'IRJ performance'

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Haile, Getinet Astatike. "Organisational accreditation, workforce training and perceptions of performance." Industrial Relations Journal 52, no. 4 (May 26, 2021): 291–314. http://dx.doi.org/10.1111/irj.12327.

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Williams, Glynne, and Vanessa Beck. "Redefining retirement: age equality and the rise of performance management." Industrial Relations Journal 46, no. 5-6 (November 2015): 365–80. http://dx.doi.org/10.1111/irj.12117.

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Pass, Sarah. "Life on the line: exploring high-performance practices from an employee perspective." Industrial Relations Journal 48, no. 5-6 (November 2017): 500–517. http://dx.doi.org/10.1111/irj.12180.

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Alhusaini, Adel, Ganeswararao Melam, Emad Bakr Takrouni, Faizan Zaffar Kashoo, and Syamala Buragadda. "Relationship Between Teacher’s and Therapist’s Evaluations on Handwriting Performance in First-grade Children." Iranian Rehabilitation Journal 19, no. 2 (June 1, 2021): 147–56. http://dx.doi.org/10.32598/irj.19.2.1236.1.

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Objectives: Handwriting dysfunction may harm children’s wellbeing. Therapists and elementary school teachers help to identify and improve children’s handwriting performance. The present study aimed to assess the relationship between therapists’ assessment and teachers’ perception of handwriting performance in first graders. Methods: This cross-sectional study involved (n=31) first-grade students, aged 6-8 years from an international school in Riyadh City, Saudi Arabia. Teachers evaluated the handwriting proficiency using the Handwriting Proficiency Screening Questionnaire (HPSQ), and the explored students were rated as proficient and non-proficient hand writers. Furthermore, therapists assessed students’ handwriting proficiency using the Minnesota Handwriting Assessment (MHA) (manuscript & D’Nealian styles) scores. The Mann–Whitney U test was used to assess the differences in MHA scores between proficient and non-proficient hand writers. Moreover, Spearman’s correlation coefficient was used to assess the relationship between the scores of MHA and HPSQ. Results: There was a significant difference in all component scores of MHA (except the rate) and both writing styles between the proficient and non-proficient writers (P<0.05). There was also a significant relationship between the MHA and the HSPQ scores (P<0.05). However, further analysis of these scales’ components suggested no significant association between teachers’ and therapists’ evaluation of the handwriting speed domain. Discussion: There was a significant relationship between the teacher’s and therapist’s evaluation of handwriting performance using standardized measures. Thus, therapists should work in collaboration with teachers to identify and treat handwriting difficulties in school children.

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Timming, Andrew R., Michael T. French, and Di Fan. "Exploring the fluid boundary between ‘legitimate performance management’ and ‘downward bullying’: an experimental approach." Industrial Relations Journal 50, no. 4 (July 2019): 348–61. http://dx.doi.org/10.1111/irj.12262.

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Arbabi, Fatemeh, Saeideh Mehrkian, Hesamaldin Emamdjomeh, and Akbar Biglarian. "The Relationship Between Reaction Time of Electrical Stapedius Reflex and Auditory Performance in Cochlear-implanted Children." Iranian Rehabilitation Journal 19, no. 2 (June 1, 2021): 189–98. http://dx.doi.org/10.32598/irj.19.2.1409.1.

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Objectives: A common concern in some cochlear-implanted children is the lack of desired progress in auditory and listening skills. Such a concern remains despite proper verbal processor programming, additional disabilities, and continuous participation in hearing rehabilitation programs. A more detailed assessment of pathways and centers of the auditory processing at the lower end of the brain stem by measuring the time of the Electrical Stapedius Reflex (ESR), and investigating its relation to auditory perception skills can provide significant information about choosing the appropriate rehabilitation method. Methods: In total, 20 unilateral cochlear-implanted children (3-7-year-olds) participated in this research. All of them were implanted for ≥2 years and participated for ≥1 year in the auditory-verbal rehabilitation program. The ESR reaction time was measured for 3 electrodes in the apex, middle, and basal areas. The Categories of Auditory Performance (CAP-II) test score was used to assess the progress of auditory skills. Then the correlation between CAP-II test score and ESR reaction time was investigated per each electrode. Results: There was a significant inverse correlation between the ESR reaction time and the CAP II test scores in the apex electrodes (r=-0.5, P<0.05). However, no such correlation was observed in the middle (r=0.34, P>0.05) and basal (r=-0.06, P>0.05) electrodes. Discussion: There was a significant correlation between the shorter reaction time of ESR in the apex electrode and the higher scores in the CAP-II test for auditory skills in children. Therefore, examining the ESR reaction time can be useful for prediction of the benefits of cochlear implantation as well as choosing a better rehabilitation approach for cochlear-implanted children.

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Fathipour-Azar, Zeinab, Malahat Akbarfahimi, and Farzad Rabiei. "The Challenges of People With Heart Failure in Activity of Daily Living Performance: A Qualitative Study in Iranian Context." Iranian Rehabilitation Journal 18, no. 3 (September 1, 2020): 263–74. http://dx.doi.org/10.32598/irj.18.3.422.3.

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Objectives: People with Heart Failure (HF) encounter many limitations while performing their daily activities. These limitations can have adverse effects on their quality of life and self-satisfaction. Hence, to assess problems in the Activities of Daily Living (ADL) and plan effective interventions, we should properly identify people’s challenges in performing daily activities. This study aimed to recognize the ADL challenges in people with HF and their effects on ADL. Methods: Twelve people with HF (aged 38 to 65 years) recruited from Rajai Hospital participated in this study using a purposeful sampling method. They were interviewed up to data saturation. Each semi-structured interview session lasted for 20-45 minutes (average 32.5 minutes). The obtained data were analyzed using a qualitative content analysis approach. Results: The challenges of the participants with performing ADL were summarized under two themes: “obstacles preventing normal functioning” and “disturbances in doing daily living activities as a burden”. The first theme consisted of “interference of previous experience in performance” and “challenges during the performance”. The second theme consisted of “personal laborious activities” and “interruption of activities performance related to family roles and outdoor tasks”. Discussion: Patients with HF have serious challenges with performing ADLs which are crucial for their living. Therefore, identifying their barriers and needs will play a major role in designing compensatory, educational, and coping programs based on the limited activities and the interrupted parameters in ADL performance.

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Dufour, Christian, and Adelheid Hege. "Understanding diversity in collective representation: common principles underlying the performance of workplace representatives in different representation regimes." Industrial Relations Journal 44, no. 4 (July 2013): 355–72. http://dx.doi.org/10.1111/irj.12024.

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Cam, Surhan, and Serap Palaz. "Managerial Jacobinism and performance in the private sector: Evidence from the Turkish shipyards for a vertical frame." Industrial Relations Journal 52, no. 2 (February 25, 2021): 161–82. http://dx.doi.org/10.1111/irj.12321.

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Laaser, Knut. "‘Customers were not objects to suck blood from’: Social relations in UK retail banks under changing performance management systems." Industrial Relations Journal 50, no. 5-6 (August 9, 2019): 532–47. http://dx.doi.org/10.1111/irj.12267.

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Azad, Omid. "The Analysis of Semantic Field in Persian-Speaking Patients With Wernicke’s Aphasia." Iranian Rehabilitation Journal 18, no. 3 (September 1, 2020): 257–62. http://dx.doi.org/10.32598/irj.18.3.378.3.

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Objectives: Wernicke’s aphasia is one of the most prominent focal brain deficits affecting the comprehension abilities of patients while preserving their production abilities. Although a lot of studies in different languages have been conducted to analyze the nature of this deficit, still some controversies exist in this regard. While some research studies attribute this defect to a performance problem, some research highlight competence deficit and hypothesize qualitative problems. This research, considering the lack of sufficient literature in Persian, tries to reconcile this controversy by investigating the nature of the semantic field in Persian-speaking patients with Wernicke’s aphasia and to compare their semantic processing abilities with those of healthy controls. Methods: In doing so, a semantic judgment task was administered to 10 patients with Wernicke’s aphasia and their age- and education-matched controls to recognize different semantic relations between a group of words whose meanings were related to each other in some way or another. Results: The results showed dissociation in the subjects’ performance. While patients with Wernicke’s aphasia had severe deficits in semantic judgment tasks, healthy control performed very well. This selective performance was also observed in different semantic pairs. Also, patients with Wernicke’s aphasia performed poorly in almost all classes of semantic pairs, but the severity of their problems was more prominent in certain semantic categories. Discussion: The findings, in line with a competence deficit hypothesis, suggest that linguistic items are processed in the mental lexicon as a semantic unit. Hence, linguistic items are categorized in a brain network correlating with each other based on different semantic relationships.

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Geary, John, and Ilona Hunek. "Strategic imperatives, power and subsidiary performance: the transfer of human resource management practices in multinational companies operating in Poland's post‐socialist banking industry." Industrial Relations Journal 50, no. 4 (July 2019): 362–78. http://dx.doi.org/10.1111/irj.12263.

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Dehghanizadeh, Moslem, Malahat Akbarfahimi, Armin Zareiyan, Farzaneh Yazdani, Mitra Khalafbeigi, and Farin Soleimani. "Predictors of Interest in Performing Activities Among Iranian Adolescents with Cerebral Palsy." Iranian Rehabilitation Journal 18, no. 4 (December 1, 2020): 377–86. http://dx.doi.org/10.32598/irj.18.4.422.5.

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Objectives: Generally, adolescents who are interested in performing activities experience positive emotions and report high levels of well-being. However, adolescents with Cerebral Palsy (CP) encounter various issues affecting their interests. The present research was planned to investigate the predictor factors that affect the interest in performing activities in Iranian adolescents with CP. Methods: In total, 312 adolescents with CP (10-19-year-olds, Mean±SD age: 14.08±2.34 y) participated in this cross-sectional study. Their gross motor function was assessed by the Gross Motor Function Classification System (GMFCS), and their manual ability was evaluated by the Manual Ability Classification System (MACS) in random order by an occupational therapist. All study participants also completed the Adolescent Interest Inventory-Cerebral Palsy (AII-CP). The predictive model was analyzed using a multiple linear regression model by the enter method. Results: The multiple linear regression analysis data presented that the highest independence in motor performance, personal values, social environment support, and age appeared to be the strongest predictors of interest in performing activities in the explored adolescents with CP (R2: 0.475). Discussion: Interest as a significant factor for participation and motivation in conducting daily living activities is associated with the highest independence in motor performance, personal values, social environment support, and the age of adolescents with CP.

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Parian, Sama-Sadat, Niloufar Fereshtenejad, Susan Hillier, and Ebrahim Sadeghi-Demneh. "The Comparison of the Effects of Flexible vs Rigid Ankle-foot orthoses on Balance and Walking Performance in Individuals With Multiple Sclerosis: A Crossover Study." Iranian Rehabilitation Journal 19, no. 2 (June 1, 2021): 199–206. http://dx.doi.org/10.32598/irj.19.2.1421.2.

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Objectives: Ankle-Foot orthoses are used to minimize the impact of weakness in ankle dorsiflexion muscles. The study on different orthotic types defines the optimal design, which effectively improves the users’ mobility. This study investigated the potential benefits and risks of a Dictus-band (flexible orthotic), compared with a thermoplastic (fixed) ankle-foot orthosis on the mobility of individuals with Multiple Sclerosis (MS). Methods: Fifteen subjects with MS and dorsiflexion ankle weakness volunteered in this randomized crossover study. The study participants received either a Dictus-band or a thermoplastic ankle-foot orthosis worn on the weaker leg, compared to barefoot as the control condition. Postural stability during standing, forward reach test, timed up and go test, and walking speed in the 10-meter walking test were compared between the study conditions. Results: There were no significant differences in the postural stability and forward reach tests between study conditions (P>0.5). When the research participants used a Dictus-band, compared to the fixed ankle-foot orthosis, the time required to complete the timed up and go was significantly reduced [P<0.01; Mean±SD difference: 6.4±1.4; 95% Confidence Interval (CI): 2.7-10.2], and walking speed was increased in the 10-meter walking test (P<0.01; Mean±SD difference: 0.46±0.8; 95%CI: 0.23-0.69). There was no difference in the timed up and go and 10-meter walking test data between the barefoot and Dictus-band conditions (P>0.5). No adverse or safety events were sustained in this research. Discussion: The present study data provided initial evidence for the lack of detrimental effects of using the Dictus-band in subjects with MS and ankle dorsiflexion deficiencies.

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Signoretti, Andrea. "Explaining variation in the social performance of lean production: a comparative case study of the role played by workplace unions' framing of the system and institutions." Industrial Relations Journal 50, no. 2 (January 30, 2019): 126–49. http://dx.doi.org/10.1111/irj.12244.

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Mohammad Rahimi, Nasser, Reza Mahdavinejad, Seyyed Reza Attarzadeh Hosseini, and Hossein Negahban. "Efficacy of Dynamic Neuromuscular Stabilization Breathing Exercises on Chest Mobility, Trunk Muscles, and Thoracic Kyphosis: A Randomized Controlled 6-Week Trial." Iranian Rehabilitation Journal 18, no. 3 (September 1, 2020): 329–36. http://dx.doi.org/10.32598/irj.18.3.969.1.

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Objectives: Dynamic Neuromuscular Stabilization (DNS) approach evaluates and activates the spinal stabilizers to optimize the performance of posture and respiratory system. This study investigated the effects of DNS breathing exercises on upper and lower chest wall mobility (UCM and LCM), trunk extensor endurance, and thoracic kyphosis in a group of sedentary students with poor posture. Methods: In this randomized, controlled 6-week trial, 52 participants were randomly divided into two groups: a DNS breathing exercise group (n=26) and a control group (n=26). First, a pre-test of the UCM, LCM, trunk muscle endurance and thoracic kyphosis was done on each participant in random order. DNS breathing exercise protocol (six times a week for six weeks) was implemented and after its completion, all post-test parameters were taken. Descriptive statistical and the paired-sample t test were used to analyze the obtained data. Results: Significant improvements were observed in the post-test compared with pre-test in DNS breathing exercise group in UCM (6.2±1.6 vs 4.4±0.9 cm, P<0.001), LCM (7.7±1.7 vs 5.5±1.0 cm, P<0.001), trunk muscle endurance (110.1±33.5 vs 88.7±34.1 s, P<0.001), and thoracic kyphosis (146.9±5.5 vs 142.7±4.0 degree, P<0.001). In contrast, the change in these parameters in the control group was not statistically significant. Discussion: DNS breathing exercise with a focus on the integrated spinal stabilizing system and breathing techniques is an effective protocol to significantly improve UCM and LCM, trunk muscle endurance, and thoracic kyphosis. It is suggested that DNS breathing exercises be introduced to improve chest mobility and posture and provide physiological stabilization for the overall health and performance of student

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Ghotbi, Nastaran. "The Effects of Lower Extremity Muscle Fatigue on Dynamic Balance in Volleyball Players." Iranian Rehabilitation Journal 19, no. 1 (March 1, 2021): 51–58. http://dx.doi.org/10.32598/irj.19.1.1003.1.

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Objectives: Lower extremity muscles are critical for maintaining dynamic balance and athletic performance. Fatigue of these muscles may affect dynamic balance. It is unclear whether fatigue in a particular muscle group can affect dynamic balance more than that in other groups. This study was conducted to evaluate and compare the effects of fatigue in 5 muscle groups on dynamic balance in volleyball players. Methods: Fifteen healthy male volleyball players separately performed the Star Excursion Balance Test before and immediately after the occurrence of fatigue of ankle Plantar Flexor (PF), knee extensor, knee flexor, hip abductor, and hip adductor muscles. Composite reach distance and distance in anterior, posteromedial, and posterolateral directions were recorded, accordingly. Results: Repeated-measures Analysis of Variance (ANOVA) data indicated that fatigue of all muscle groups significantly decreased the mean score of composite (P<0.001). Anterior, posteromedial, and posterolateral distance scores decreased following muscle fatigue of knee extensors and ankle PFs (P<0.05). Discussion: This study suggested that regarding composite reach score, fatigue of ankle, knee, and hip muscles similarly decreased dynamic balance. However, evaluating three main directions revealed that knee extensors and ankle PFs muscles fatigue presented more prominent effects on the explored volleyball players’ balance, compared to the other muscles.

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Daryabeigi, Mozhdeh, Masoume Pourmohamdreza-Tajrishi, Behrooz Dolatshahi, and Enayatollah Bakhshi. "The Effectiveness of Cognitive-Behavioral Therapy on Internalizing Problems of Children With Externalizing Disorders." Iranian Rehabilitation Journal 18, no. 2 (June 1, 2020): 193–202. http://dx.doi.org/10.32598/irj.18.2.948.1.

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Objectives: The present study aimed to determine the effectiveness of cognitive-behavioral therapy on internalizing problems of children with externalizing disorders Methods: It was an experimental study with a pre-test/post-test control group design. Among the students of elementary schools of Tehran City, Iran, 90 boys were selected based on the mothers' report and the Child Behavior Checklist (CBCL) by convenience sampling method. Fifty students whose scores equaled 63 or higher in the externalizing scale were diagnosed as individuals with externalizing disorders. Afterward, 32 individuals who acquired T-score ≥ 60 were assigned randomly in the experimental and control groups (each with 16 students). The experimental group was divided into two subgroups (8 individuals in each subgroup) and participated in 16 cognitive-behavior therapy (Coping Cat program) sessions (1 hour, twice a week). The control group received only the mainstream Program of the school. After the last session, their mothers completed the CBCL again. The obtained data were analyzed by One-way Analysis of Covariance (ANCOVA). Results: The results of One-way ANCOVA showed that the internalizing problems, i.e. withdrawn/depressed, somatic complaints, and anxious/depressed symptoms of the experimental group have reduced significantly after participating in the cognitive-behavioral therapy sessions. Discussion: Cognitive behavioral therapy (Coping Cat Program) is an effective method for reducing internalizing problems of children with externalizing disorders. Therefore, the program can be used to prevent the negative consequences of internalizing problems such as poor academic performance and social adaptation of the students with externalizing disorders.

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Mukhtar Alam, Mohd, and Abid Ali Khan. "Electromyography-based Fatigue Assessment During Endurance Testing by Different Vibration Training Protocols." Iranian Rehabilitation Journal 19, no. 1 (March 1, 2021): 85–98. http://dx.doi.org/10.32598/irj.19.1.1150.1.

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Objectives: This study presents a method of assessing muscle fatigue during endurance testing at 50% maximal voluntary contraction (MVC) using electromyography (EMG) information as indirect indices of fatigability in the forearm muscles, namely, flexor digitorum superficialis (FDS); flexor carpi ulnaris (FCU); extensor carpi ulnaris (ECU) and extensor carpi radialis brevis (ECRB)." This study presents a method of assessing muscle fatigue during endurance testing at 50% maximal voluntary contraction (MVC) using electromyography (EMG) information as indirect indices of fatigability in the forearm muscles, namely, flexor digitorum superficialis (FDS); flexor carpi ulnaris (FCU); extensor carpi ulnaris (ECU) and extensor carpi radialis brevis (ECRB). Methods: A randomized comparative experimental design was used during endurance test with 8 VT protocols; based on different combinations of vibration frequency (35 & 45 Hz), amplitude (3±0.5g & 9±0.5g), and exposure duration (30 & 60 seconds), i.e., were given to the study participants for 4 days. A random sampling of participants was conducted from two groups (n=56/group), as follows: individuals with a Sedentary Lifestyle (SL) and a group of Construction Workers (CW). Results: Multivariate Analysis of Variance (MANOVA) results indicated a significant increase in EMG rms, median frequency, waveform length, mean absolute value (P<0.001), and the variance of EMG signal (P<0.05) (except in ECU for the SL group and ECRB for the CW group on the variance of EMG signal) after VT in all muscles of both research groups. Therefore, an increase in the EMG parameter value after a grip endurance task revealing an elevation in EMG signal amplitude is indicative of muscle fiber fatigue. Furthermore, the strongest correlation was found between grip endurance and WL (r=0.471, P<0.001), and EMG rms (r=0.401, P<0.001) of the ECU muscle in the SL group only. Discussion: The patterns of EMG signal represented the amplitude and spectral parameters of the signal, enabling real-time fatigue analysis. Additionally, surface EMG information is useful for indirectly evaluating performance fatigue during the endurance test.

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Wang, Penggang, Tengfei Guo, Tiejun Zhao, Zhenxing Du, Zuquan Jin, Biqin Dong, and Zhe Li. "Effect of Oxidization Temperatures and Aging on Performance of Carbonate Melt Oxidized Iridium Oxide pH Electrode." Sensors 19, no. 21 (November 1, 2019): 4756. http://dx.doi.org/10.3390/s19214756.

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Iridium oxide pH electrodes employing the carbonate melt oxidation method were fabricated with oxidation temperatures of 750 °C, 800 °C and 850 °C, respectively. Scanning electron microscope (SEM) and atomic force microscope (AFM) images showed that the oxide film regularized with the increase in oxidation temperatures. The pH response, response time and long-term stability of the electrodes indicated that the electrodes made at 850 °C had the best performance. X-ray photoelectron spectra (XPS) surveys investigated the change in the electrodes’ chemical composition and element oxidation states at 850 °C, and the results showed that the relative content of Ir3+ had increased by 23.9%, and the Ir4+ and Ir6+ had decreased by 10.9% and 13%, respectively, in the surface oxide layer after one month of aging. However, the relative contents of Ir3+, Ir4+ and Ir6+ were almost constant for the inner oxide layer. Meanwhile, the XPS result also indicated that the outer oxide layer of the electrode had a higher hydration degree than the inner oxide layer.

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de Freitas, Victor H., Lucas A. Pereira, Eberton A. de Souza, Anthony S. Leicht, Maurizio Bertollo, and Fábio Y. Nakamura. "Sensitivity of the Yo-Yo Intermittent Recovery Test and Cardiac Autonomic Responses to Training in Futsal Players." International Journal of Sports Physiology and Performance 10, no. 5 (July 2015): 553–58. http://dx.doi.org/10.1123/ijspp.2014-0365.

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Purpose:This study examined the sensitivity of maximal (Yo-Yo Intermittent Recovery [IR] 1 and 2) and submaximal (5’-5’) tests to identify training adaptations in futsal players along with the suitability of heart-rate (HR) and HR-variability (HRV) measures to identify these adaptations.Methods:Eleven male professional futsal players were assessed before (pretraining) and after (posttraining) a 5-wk period. Assessments included 5’-5’ and Yo-Yo IR1 and IR2 performances and HR and HRV at rest and during the IR and 5’-5’ tests. Magnitude-based-inference analyses examined the differences between pre- and posttraining, while relationships between changes in variables were determined via correlation.Results:Posttraining, Yo-Yo IR1 performance likely increased while Yo-Yo IR2 performance almost certainly increased. Submaximal HR during the Yo-Yo IR1 and Yo-Yo IR2 almost certainly and likely, respectively, decreased with training. HR during the 5’-5’ was very likely decreased, while HRV at rest and during the 5’-5’ was likely increased after training. Changes in both Yo-Yo IR performances were negatively correlated with changes in HR during the Yo-Yo IR1 test and positively correlated with the change in HRV during the 5’-5’.Conclusions:The current study has identified the Yo-Yo IR2 as more responsive for monitoring training-induced changes of futsal players than the Yo-Yo IR1. Changes in submaximal HR during the Yo-Yo IR and HRV during the 5’-5’ were highly sensitive to changes in maximal performance and are recommended for monitoring training. The 5’-5’ was recommended as a time-efficient method to assess training adaptations for futsal players.

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Akdoğan, Erkan, İlker Yılmaz, Yusuf Köklü, Utku Alemdaroğlu, and Ali Onur Cerrah. "The effect of isolated or combined small-sided games and speed endurance training on physical performance parameters in young soccer players." Kinesiology 53, no. 1 (2021): 78–85. http://dx.doi.org/10.26582/k.53.1.10.

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The purpose of this study was to investigate the effects of six weeks of small-sided games (SSG), speed endurance (SER) and combined SSG and SER (CT) training programs on sprint, repeated sprint, Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1) and level 2 (Yo-Yo IR2) performance in young soccer players. Forty-one elite young soccer players (body height: 174.0 ± 7.5 cm, body weight: 59.7 ± 9.5 kg, age: 14.6 ± 0.5 years, training age: 7.4 ± 0.6 years) underwent anthropometric measurements before performing 10m and 30m sprint tests, repeated sprint tests, and Yo-Yo IR1 and Yo-Yo IR2. The players were then divided into four groups: the SSG group (SSG; n=11), the SER group (SER; n=10), the CT group (CT; n=11), and the control group (CG; n=9). All groups performed training for six weeks on two days out of the five training days the participants were undertaking. There was a statistically significant increase in the Yo-Yo IR1 and Yo-Yo IR2 test performances of players in SSG, SER and CT groups (p<.05). In addition, players in these groups showed significantly higher percentage increases in Yo-Yo IR2 test performance compared to the CG. The CT group also had a statistically significant increase in Yo-Yo IR1 test performance compared to the CG (p<.05). In conclusion, while this study shows that SSG and SER training can be used for physical performance development in isolation or in combination, coaches and sports scientists are advised to choose combined training to use training time more efficiently.

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Bilitza, Dieter, and Bodo Reinisch. "Preface: Evaluation IRI performance." Advances in Space Research 63, no. 6 (March 2019): 1837. http://dx.doi.org/10.1016/j.asr.2019.01.025.

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Ślepaczuk, Robert, and Maryna Zenkova. "Robustness of Support Vector Machines in Algorithmic Trading on Cryptocurrency Market." Central European Economic Journal 5, no. 52 (August 7, 2019): 186–205. http://dx.doi.org/10.1515/ceej-2018-0022.

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Abstract This study investigates the profitability of an algorithmic trading strategy based on training SVM model to identify cryptocurrencies with high or low predicted returns. A tail set is defined to be a group of coins whose volatility-adjusted returns are in the highest or the lowest quintile. Each cryptocurrency is represented by a set of six technical features. SVM is trained on historical tail sets and tested on the current data. The classifier is chosen to be a nonlinear support vector machine. The portfolio is formed by ranking coins using the SVM output. The highest ranked coins are used for long positions to be included in the portfolio for one reallocation period. The following metrics were used to estimate the portfolio profitability: %ARC (the annualized rate of change), %ASD (the annualized standard deviation of daily returns), MDD (the maximum drawdown coefficient), IR1, IR2 (the information ratio coefficients). The performance of the SVM portfolio is compared to the performance of the four benchmark strategies based on the values of the information ratio coefficient IR1, which quantifies the risk-weighted gain. The question of how sensitive the portfolio performance is to the parameters set in the SVM model is also addressed in this study.

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Liang, Chih-Hao, and Ying-Jung Chen. "Preparation of High-Performance Metal-Free UV/Near Infrared-Shielding Films for Human Skin Protection." Nanomaterials 11, no. 8 (July 29, 2021): 1954. http://dx.doi.org/10.3390/nano11081954.

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A series of metal-free UV/near infrared (NIR)-shielding coatings are successfully fabricated by shielded cathodic arc plasma evaporation (CAPE) and substrate-biased RF magnetron sputtering processes. The UV/NIR-shielding coatings comprising quarter-wave stacks of TiO2/SiO2 multilayers and high-conductivity sputter-deposited ITO films with a thickness in the range of 200–600 nm could block IRA and IRB radiations, respectively. The total thicknesses of UV/near infrared-shielding films are in the range from 375 nm to 1513.8 nm. The anatase-phase TiO2 films with absorption edge located at ∼375 nm were deposited by shielded CAPE at ∼100 °C. Further, the well-crystallized ITO films were found to have high free-electron concentrations (1.12 × 1021 cm−3), resulting in strong absorption of IRB due to the plasmon resonance absorption. The optimal optical design and ITO film thickness were investigated, and the TiO2(SiO2/TiO2)3 multilayer combined with an ITO film thickness of 400 nm was found to provide a high NIR-shielding rate of 94.8%, UVB to UVA-shielding rate of 92.7%, and average visible light transmittance of 68.1%. Further, human skin cells protected by a UV/NIR-shielding coating showed significantly decreased reactive oxygen species generation and inflammatory cytokine expression as compared to those of unprotected cells. The results demonstrate that the development of multifunction coatings have potential for transparent heat insulation windows and human skin protection against UV/IR radiations.

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Kim, MinChung, Kwang-Ho Kim, and YongHee Kim. "전략적 강조(Strategic emphasis)가 기업 성과에 미치는 영향에 관한 연구: 미국과 중국 시장 차이의 관점에서." International Business Journal 32, no. 1 (February 28, 2021): 117–42. http://dx.doi.org/10.14365/ibj.2021.32.1.4.

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Zhang, Yifei, and William E. Ryan. "Structured IRA Codes: Performance Analysis and Construction." IEEE Transactions on Communications 55, no. 5 (May 2007): 837–44. http://dx.doi.org/10.1109/tcomm.2007.896139.

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Pan, Hong, Dong-Soon Kim, and Hyun-Do Kim. "중국 국내 및 해외 블록 기관투자자가 중국기업의 혁신 성과에 미치는 영향." International Business Journal 32, no. 1 (February 28, 2021): 35–81. http://dx.doi.org/10.14365/ibj.2021.32.1.2.

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Lloyd, Rosemarie. "Discretionary Effort and the Performance Domain." Australian and New Zealand Journal of Organisational Psychology 1 (August 1, 2008): 22–34. http://dx.doi.org/10.1375/ajop.1.1.22.

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AbstractThis study had two main aims. (1) To examine the role of discretionary effort (DE) in the multidimensional performance domain consisting of in-role behaviour (IRB) and organisational citizenship behaviour (OCB); and (2) to assess whether skills and autonomy are important predictors of DE and show variance in common with DE over and above IRB and OCB. A managers/supervisors sample (n = 476) and a sample with both managerial and nonmanagerial employees (n = 424) were employed. Confirmatory factor analyses showed that the three factor hierarchical model was superior compared to three other models tested, indicating that DE is a separate construct to both IRB and OCB but together with these forms part of the performance domain. Regression analysis showed that both skills and autonomy are important predictors of DE; however, only autonomy explained variance in DE over and above IRB, OCB and skills. Together these results add to the construct validity of DE. Implications and suggestions for future research are discussed.

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Kim, Kwang-Ho. "경쟁기업의 제휴파트너와 맺는 전략적제휴가 기업성과에 미치는 영향: 미국소프트웨어 기업을 대상으로." International Business Journal 31, no. 3 (August 31, 2020): 35–62. http://dx.doi.org/10.14365/ibj.2020.31.3.2.

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Chahar, Bhawna. "Performance Appraisal Systems and Their Impact on Employee Performance." Information Resources Management Journal 33, no. 4 (October 2020): 17–32. http://dx.doi.org/10.4018/irmj.2020100102.

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The purpose of this study was to understand the relationship between employee performance appraisal systems, employee motivation, and employee job performance. A cross-sectional survey of 393 employees of an Indian service organization showed that the performance appraisal system has a direct impact on employee job performance, and that this impact is moderated by the employee's motivation. Respondents were asked about 36 appraisal system, performance, and motivation attributes. Implications of the findings for the future research directions and practice are discussed.

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Wang, Xueke, and Seong-jin Choi. "문화거리가 다국적 기업의 성과에 미치는 영향: 최고경영진의 중국 특색 역량을 중심으로." International Business Journal 29, no. 2 (May 31, 2018): 39–72. http://dx.doi.org/10.14365/ibj.2018.29.2.2.

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Tyers, Alex. "Performance based design." Information Design Journal 16, no. 3 (December 8, 2008): 202–15. http://dx.doi.org/10.1075/idj.16.3.04tye.

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This paper is about the application of professional information design practices that have grown out of research conducted by the Communication Research Institute (CRI), formerly the Communication Research Institute of Australia (CRIA), and others. In particular, it focuses on the role of testing in studio practice. Starting in the mid 1980s, CRI undertook a number of large-scale applied projects funded by government and industry to improve the quality of communication between large organisations and the public. The research focused on discovering the best methods for designing information for public use. The CRI research was able to draw on a substantial body of prior research in design methods (e.g. Jones 1970), document designs (e.g. Felker et al 1980) and specifically in information design (e.g. Easterby & Zwaga 1984). Moreover, a growing number of significant case histories published in this journal have provided an emerging view of professional practice in the field (e.g. Goodwin 1984, Tomaselli & Tomaselli 1984, Waller 1984) This early work suggests the possibility of a unified set of highly productive information design methods, and was foreshadowed in the important contributions of Pat Wright (e.g. Wright 1979). The work started at CRI in the mid-1980s focused on unifying information design methods and demonstrating their productivity (Fisher and Sless 1990). By 1992, it was possible to suggest that the resulting design methods had a wide general application to information design (Sless 1992). However, it remained to demonstrate that these methods could be applied consistently across a range of information design problems and that the resultant designs could consistently perform at an acceptable level. This paper reports on that demonstration. In particular it shows through practical examples how testing and measurement of a design’s performance has become an integral part of professional information design practice.

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Dhanasekar, M., and W. Bayissa. "Performance of square and inclined insulated rail joints based on field strain measurements." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 226, no. 2 (August 15, 2011): 140–54. http://dx.doi.org/10.1177/0954409711415898.

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Insulated rail joints (IRJs) possess lower bending stiffness across the gap containing insulating endpost and hence are subjected to wheel impact. IRJs are either square cut or inclined cut to the longitudinal axis of the rails in a vertical plane. It is generally claimed that the inclined cut IRJs outperform the square cut IRJs; however, there is a paucity of literature with regard to the relative structural merits of these two designs. This article presents comparative studies of the structural response of these two IRJs to the passage of wheels based on continuously acquired field data from joints strain-gauged closer to the source of impact. Strain signatures are presented in time, frequency, and wavelet domains and the peak vertical and shear strains are systematically employed to examine the relative structural merits of the two IRJs subjected to similar real-life loading. It is shown that the inclined IRJs resist the wheel load with higher peak shear strains and lower peak vertical strains than that of the square IRJs.

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Balakumar, Santhirasegarampillai, Vasanthy Arasaratnam, and Kandiah Balasubramaniam. "Improved Performance of Amberlite IRA-904 Immobilized Glucoamylase." Starch - Stärke 50, no. 2-3 (March 1998): 93–95. http://dx.doi.org/10.1002/(sici)1521-379x(199803)50:2/3<93::aid-star93>3.0.co;2-8.

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Loretto, Michael H. "The IRC in materials for high-performance applications." Advanced Materials 7, no. 12 (December 1995): 961–63. http://dx.doi.org/10.1002/adma.19950071202.

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Piao, Chuhua, Dong-Soon Kim, and Hyun-Do Kim. "중국기업의 소유 및 지배구조가 현금보유 및 경영성과에 미치는 영향." International Business Journal 30, no. 2 (May 31, 2019): 1–36. http://dx.doi.org/10.14365/ibj.2019.30.2.1.

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Gwon, Jae Hyun, and Joonho Shin. "소유구조가 중소기업의 임원보수, 기업성과, 국제화에 미치는 영향." International Business Journal 31, no. 3 (August 31, 2020): 117–44. http://dx.doi.org/10.14365/ibj.2020.31.3.5.

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Elmunim, Nouf Abd, Mardina Abdullah, and Siti Aminah Bahari. "Evaluating the Performance of IRI-2016 Using GPS-TEC Measurements over the Equatorial Region." Atmosphere 12, no. 10 (September 23, 2021): 1243. http://dx.doi.org/10.3390/atmos12101243.

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Total electron content (TEC) is an important parameter in the ionosphere that is extensively used to study the variability of the ionosphere as it significantly affects radio wave propagations, causing delays on GPS signals. Therefore, evaluating the performance of ionospheric models is crucial to reveal the variety of ionospheric behaviour in different solar activity periods during geomagnetically quiet and disturbed periods for further improvements of the IRI model performance over the equatorial region. This research aimed to investigate the variations of ionospheric VTEC and observe the improvement in the performance of the IRI-2016 (IRI-2001, IRI01-corr, and NeQuick). The IRI-2016 was evaluated with the IRI-2012 using NeQuick, IRI-2001, and IRI01-corr topside electron density options. The data were obtained using a dual-frequency GPS receiver installed at the Universiti Utara Malaysia Kedah (UUMK) (geographic coordinates 4.62° N–103.21° E, geomagnetic coordinates 5.64° N–174.98° E), Mukhtafibillah (MUKH) (geographic coordinates 6.46° N–100.50° E, geomagnetic coordinates 3.32° S–172.99° E), and Tanjung Pengerang (TGPG) (geographic coordinates 1.36° N–104.10°E, geomagnetic coordinates 8.43° S–176.53° E) stations, during ascending to high solar activity at the geomagnetically quiet and disturbed periods in October 2011, March 2012, and March 2013. The maximum hourly ionospheric VTEC was observed during the post-noon time, while the minimum was during the early morning time. The ionospheric VTEC modelled by IRI-2016 had a slight improvement from the IRI-2012. However, the differences were observed during the post-noon and night-time, while the modelled VTEC from both IRI models were almost similar during the early morning time. Regarding the daily quiet and disturbed period’s prediction capability of the IRI-2016 and IRI-2012, IRI-2016 gave better agreement with the measured VTEC. The overall results showed that the model’s prediction performance during the high solar activity period in 2013 was better than the one during the ascending solar activity period. The results of the comparison between IRI-2016 and IRI-2012 in high solar activity exhibited that during quiet periods, all the IRI models showed better agreement with the measured VTEC compared to the disturbed periods.

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Caligiuri, Michael, Karen Allen, Nate Buscher, Lisa Denney, Cynthia Gates, Kip Kantelo, Anthony Magit, Rachael Sak, Gary S. Firestein, and John Fontanesi. "A multisite study of performance drivers among institutional review boards." Journal of Clinical and Translational Science 1, no. 3 (June 2017): 192–97. http://dx.doi.org/10.1017/cts.2017.8.

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IntroductionThe time required to obtain Institutional Review Board (IRB) approval is a frequent subject of efforts to reduce unnecessary delays in initiating clinical trials. This study was conducted by and for IRB directors to better understand factors affecting approval times as a first step in developing a quality improvement framework.Methods807 IRB-approved clinical trials from 5 University of California campuses were analyzed to identify operational and clinical trial characteristics influencing IRB approval times.ResultsHigh workloads, low staff ratios, limited training, and the number and types of ancillary reviews resulted in longer approval times. Biosafety reviews and the need for billing coverage analysis were ancillary reviews that contributed to the longest delays. Federally funded and multisite clinical trials had shorter approval times. Variability in between individual committees at each institution reviewing phase 3 multisite clinical trials also contributed to delays for some protocols. Accreditation was not associated with shorter approval times.ConclusionsReducing unnecessary delays in obtaining IRB approval will require a quality improvement framework that considers operational and study characteristics as well as the larger institutional regulatory environment.

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Dougan, Charles E., Lisa Aultman-Hall, Soon-Nam Choi, Bradley Overturf, and Christine Hobson. "Variation of Pavement Smoothness Between Adjacent Lanes: Implications for Performance-Based Contracting." Transportation Research Record: Journal of the Transportation Research Board 1860, no. 1 (January 2003): 152–58. http://dx.doi.org/10.3141/1860-17.

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There is a need to understand how pavement smoothness varies over space and time and with other environmental factors. Information from a large set of international roughness index (IRI) field data together with traffic and pavement design and age data is used to consider IRI variation across the lanes of multilane highways and freeways in the state of Connecticut. The objective is to determine to what extent IRI varies over all lanes through time in order to consider the amount of field data that will have to be collected for departments of transportation to adequately measure or predict pavement rideability for newer performance-based contracting agreements, particularly those involving contractor warranties. Results indicate that on the basis of IRI, small average roughness differences exist between adjacent lanes. IRI values are highest in the outer right lanes. Lateral differences are relatively consistent and random but small in magnitude. No strong effects could be found between pavement age, composition, or traffic loading and IRI. However, some preliminary evidence suggests that the influence of these factors may also vary by lane. These results have implications for future research as well as the logistics of pavement monitoring by agencies for warranty-based contract payments. First, the difference in IRI between lanes is small and consistent (0.1 to 0.2) when averaged over longer sections, and therefore it is not necessary to repeat measurements for all lanes along longer projects or whole routes. Second, the variation in these field IRI measurements is unpredictable, especially over smaller spatial areas, suggesting that IRI data should be collected in all lanes when shorter projects are being considered.

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Sutrisno, Sutrisno. "Risiko dan kinerja Bank Perkreditan Rakyat: Studi perbandingan antara BPR Syariah dengan Konvensional di Indonesia." INFERENSI: Jurnal Penelitian Sosial Keagamaan 11, no. 2 (March 26, 2018): 309–28. http://dx.doi.org/10.18326/infsl3.v11i2.309-328.

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The aims of this study were to examine the effect of risks consisting of credit risk (NPL/NPF), capital risk (CAR), liquidity risk (LDR/FDR), and operating risk (OEOI) on rural banking performance as measured by return on assets ROA), the differences in risk and performance of Islamic Rural Banking (IRB) and Conventions Rural Banking (CRB). The population is all banking in Indonesia whether operating in Islamic or conventionally with purposive sampling method. The results showed that NPL in CRB had not significant effect, while NPF IRB had negative significant effect on performance. In contrast, CAR on Islamic Rural Banks had not significant effect, while CAR of conventional rural banking has positive significant effect on performance. Liquidity risks (LDR/FDR), both IRB and CRB have positive significant impact on performance. While the operational risk (OEOI) has a negative significant effect on the performance of CRB as well as IRB. Differential test results indicate that there are significant differences between CRB and IRB in terms of profitability (ROA), credit risk (NPL / NPF), liquidity risk (LDR / FDR) risk, and operating risk (BOPO).

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Marshall, Thomas E., Terry A. Byrd, Lorraine R. Gardiner, and R. Kelly Rainer Jr. "Technology Acceptance and Performance." Information Resources Management Journal 13, no. 3 (July 2000): 33–45. http://dx.doi.org/10.4018/irmj.2000070104.

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Piao, Yiling, Young-Ryeol Park, Soonkyoo Choe, and Youjin Baik. "기업의 지배구조 국제화와 중국 기업의 사회적 성과에 미치는 영향: 여유자원의 조절효과를 중심으로." International Business Journal 29, no. 3 (August 31, 2018): 85–112. http://dx.doi.org/10.14365/ibj.2018.29.3.4.

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Kang, Jinwon. "The Effect of International Joint Research to the Research Performance: The Case of the Global Research Laboratory and the Basic Research Laboratory Programme." Science, Technology and Society 22, no. 3 (September 22, 2017): 473–89. http://dx.doi.org/10.1177/0971721817723392.

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Korea has been in a transition from catching-up to post-catching-up period. In this circumstance, the strengthening of basic research is one of the important strategies. This research investigates the main factors influencing research performance through the international joint research (IJR). The literature about determinants of performance of R&D and the effect of IJR to the performance is reviewed. The research performance of IJR will be investigated in comparison with IJR programme and general R&D programme as a result of international and domestic research activities. The comparison about research performance will be performed using independent samples test on the modified impact factor of papers. The main factors influencing the performance are investigated in terms of research budget, capacity, number of researchers and international collaboration on the basis of previous researches. The main finding is that the research capacity is basic requirement to increase the modified impact factor and the main factors influencing research performance through IJR are the network size and the number of contact in this research. Its recommendations, in accordance with this finding, are as follows. The government should support researcher to have more and easier contact with foreign researchers in terms of budget and programme structure and institutional improvement, including evaluation system. The additional budget on the existing programme and easy usage of research budget in the IJR are the good ways to promote the IJR activities through renovation of basic R&D programme structure. The additional credit to the research groups with bigger research networks should be considered in the selection process and ex-post evaluation process. Long-term and sustainable support for the research is the basic requirement to improve the capacity of researchers and obtain better research performance.

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Vangipuram, Gautam, Aaron Y. Lee, Kasra A. Rezaei, Lisa C. Olmos De Koo, Yewlin E. Chee, Jennifer R. Chao, Catherine Egan, and Cecilia S. Lee. "CAPTCHA as a Visual Performance Metric in Active Macular Disease." Journal of Ophthalmology 2019 (June 9, 2019): 1–6. http://dx.doi.org/10.1155/2019/6710754.

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Purpose. CAPTCHA (completely automated public turing test to tell computers and humans apart) was designed as a spam prevention test. In patients with visual impairment, completion of this task has been assumed to be difficult; but to date, no study has proven this to be true. As visual function is not well measured by Snellen visual acuity (VA) alone, we theorized that CAPTCHA performance may provide additional information on macular disease-related visual dysfunction. Methods. This was designed as a pilot study. Active disease was defined as the presence of either intraretinal fluid (IRF) or subretinal fluid (SRF) on spectral-domain optical coherence tomography. CAPTCHA performance was tested using 10 prompts. In addition, near and distance VA, contrast sensitivity, and reading speed were measured. Visual acuity matched pseudophakic patients were used as controls. Primary outcome measures were average edit distance and percent of correct responses. Results. 70 patients were recruited: 33 with active macular disease and 37 control subjects. Contrast sensitivity was found to be significantly different in both the IRF (p<0.01) and SRF groups (p<0.01). No significant difference was found comparing the odds ratio of average edit distance of active disease (IRF, SRF) vs. control (OR 1.09 (0.62, 1.90), 1.10 (0.58, 2.05), p=0.77, 0.77) or percent correct responses of active disease vs. control (OR 0.98 (0.96, 1.01), 1.09 (0.58, 2.05), p=0.22,0.51) in CAPTCHA testing. The goodness of fit using logistic regression analysis for the dependent variables of either IRF or SRF did not improve accounting for average edit distance (p=0.49, p=0.27) or percent correct (p=0.89, p=0.61). Conclusions. Distance VA and contrast sensitivity are positively correlated with the presence of IRF and SRF in active macular disease. CAPTCHA performance did not appear to be a significant predictor of either IRF or SRF in our pilot study.

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Boullosa, Daniel A., Fábio Yuzo Nakamura, Luiz Augusto Perandini, and Anthony Scott Leicht. "Autonomic correlates of Yo-Yo performance in soccer referees." Motriz: Revista de Educação Física 18, no. 2 (June 2012): 291–97. http://dx.doi.org/10.1590/s1980-65742012000200009.

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We tested the hypothesis that: basal cardiac autonomic modulation (i.e. heart rate variability, HRV) was associated with the parasympathetic withdrawal during, and overall Yo-Yo IR1 performance; and therefore HRV could be used as a simple tool for specific fitness assessment. Nine sub-elite soccer referees performed the Yo-Yo IR1 until exhaustion with simultaneous recording of heart rate with the autonomic response during exercise calculated as the area under the curve (AUC). In the same week but with at least 48 hrs between days, a night-time HR recording was obtained from participants for determination of basal HRV. Correlation analysis demonstrated strong (r>0.83) relationships among Yo-Yo IR1 performance, AUC and basal HRV. These results indicate that both nocturnal HRV and AUC can be utilised as simple and valid monitoring tools of soccer referees' fitness.

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BRODIE, D. "Specific Performance and Employment Contracts." Industrial Law Journal 27, no. 1 (March 1, 1998): 37–48. http://dx.doi.org/10.1093/ilj/27.1.37.

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Hussain, S. A., K. Mahmood, and E. Garcia. "Factors Affecting Performance of AODV." Information Technology Journal 6, no. 2 (February 1, 2007): 237–41. http://dx.doi.org/10.3923/itj.2007.237.241.

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Nguyen, M. T., J. Conway, P. T. Russell, C. H. Thompson, and J. Faunt. "Judging performance in general medicine." Internal Medicine Journal 44, no. 6 (June 2014): 523–24. http://dx.doi.org/10.1111/imj.12422.

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Journal articles on the topic 'IRJ performance'

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