Excavator Wheel Drive Reconstruction.

Import 05/08/2014V této práci je popsán pomocný pohon kolesa rypadla a možnost jeho rozběhu softstartérem a frekvenčním měničem. V první části je probrán asynchronní motor s kotvou nakrátko, jeho popis a princip funkce. Další části se věnují softstartéru a frekvenčnímu měniči, jejich popisu, funkcím a možnostem řízení. Dále je zde provedeno měření jejich vlivu na síť. Poslední část je věnována návrhu rekonstrukce pohonu pro napájení s frekvenčním měničem.This thesis describes the auxiliary drive wheel excavators and the possibility of starting the softstarter and frequency converter. In the first part of the document the asynchronous motor with squirrel cage is discussed, its description and function. Other parts of the document are devoted to the soft starter and frequency converter, their description, function and management options. Furthermore, there is performed measurement of their effect on the network. The last section is devoted to the design of the reconstruction drive with the frequency converter.410 - Katedra elektroenergetikyvýborn

Factors associated with patient-reported likelihood of using online self-care interventions: A Scleroderma Patient-centered Intervention Network (SPIN) cohort study

Contains fulltext : 212377.pdf (publisher's version ) (Open Access)Objectives: The Scleroderma Patient-centered Intervention Network (SPIN) Cohort uses the cohort multiple randomised controlled trial design to embed trials of online self-care interventions for people living with systemic sclerosis (SSc; scleroderma). To offer interventions to patients interested in using them, participants complete signalling items that query about the likelihood that patients would agree to participate in nine different hypothetical online programmes addressing common SSc-related problems. It is not known what factors influence patient-reported interest in participating in a particular online intervention and if intervention-specific signalling questions provide unique information or replicate broader characteristics, such as overall willingness to participate or self-efficacy. This study assessed factors that explain responses to intervention-specific signalling items. Design: Cross-sectional survey. Setting: SPIN Cohort participants enrolled at 42 centres from Canada, the USA, the UK, France, Spain and Mexico who completed study questionnaires from March 2014 to January 2018 were included. Measures: Demographic and disease characteristics, self-efficacy and symptoms related to each specific intervention were completed in addition to signalling items. General likelihood of using interventions was calculating by taking the mean score of the remaining signalling questions. Participants: 1060 participants with complete baseline data were included in the analyses. Results: For all individual signalling questions, controlling for other variables, the mean of the remaining signalling questions was the strongest predictor (standardised regression coefficient ß from 0.61 (sleep) to 0.80 (self-management)). Smaller, but statistically significant, associations were found with the symptom associated with the respective signalling question and with general self-efficacy for 7 of 9 signalling questions. Conclusions: The main factor associated with patients' interest in participating in a disease-specific online self-care intervention is their general interest in participating in online interventions. Factors that may influence this general interest should be explored and taken into consideration when inviting patients to try online interventions.9 p

Barriers and facilitators to physical activity for people with scleroderma: A Scleroderma Patient-centered Intervention Network (SPIN) Cohort study

Item does not contain fulltextObjective: To support physical activity among people with systemic sclerosis (SSc; scleroderma), we sought to determine the (1) prevalence and importance of barriers and (2) likelihood of using possible facilitators. Methods: We invited 1,707 participants from an international SSc cohort to rate the (1) importance of 20 barriers (14 medical; 4 social or personal; 1 lifestyle; 1 environmental); and (2) likelihood of using 91 corresponding barrier-specific and 12 general facilitators. Results: Among 721 respondents, 13 barriers were experienced by ≥25% of participants, including 2 (fatigue, Raynaud's) rated 'important' or 'very important' by ≥50% of participants, 7 (joint stiffness and contractures, shortness of breath, gastrointestinal problems, difficulty grasping, pain, muscle weakness and mobility limitations, low motivation) by 26-50%, and 4 by 50% as 'likely' or 'very likely'. Conclusion: Medical-related physical activity barriers were common and considered important. Facilitators considered as most likely to be used involved adapting exercise, taking care of one’s body, keeping warm, and protecting skin.02 februari 202

Factors influencing patient interest in participating in an online self-care intervention: A Scleroderma Patient-centered Intervention Network (SPIN) Cohort Study

Contains fulltext : 219623.pdf (Publisher’s version ) (Open Access)2 p

The association of sociodemographic and disease variables with hand function: A Scleroderma Patient-centered Intervention Network cohort study

Contains fulltext : 196552.pdf (publisher's version ) (Open Access)Objectives: Impaired hand function in systemic sclerosis (SSc) is a primary cause of disability and contributes diminished health-related quality of life. The objective of the present study was to evaluate sociodemographic, lifestyle, and disease-related factors independently associated with hand function in SSc. Methods: Patients enrolled in the Scleroderma Patient-centered Intervention Network Cohort who completed baseline study questionnaires between March 2014 and September 2017 were included. Hand function was measured using the Cochin Hand Function Scale (CHFS). Multiple linear regression analysis was used to identify independent correlates of impaired hand function. Results: Among 1193 participants (88% female), the mean CHFS score was 13.3 (SD=16.1). Female sex (standardised regression coefficient, beta =.05), current smoking (beta=.07), higher BMI (beta=.06), diffuse SSc (beta=0.14), more severe Raynaud's scores (beta=.23), more severe finger ulcer scores (beta=.23), moderate (beta=0.19) or severe small joint contractures (beta=.20), rheumatoid arthritis (beta=0.07), and idiopathic inflammatory myositis (beta=0.06) were significantly associated with higher CHFS scores (more impaired hand function). Consumption of 1-7 alcoholic drinks per week (beta=-0.07) was associated with lower CHFS scores (less impaired hand function) compared to no drinking. Conclusions: Multiple factors are associated with hand function in SSc. The presence of moderate or severe small joint contractures, the presence of digital ulcers, and severity of Raynaud's phenomenon had the largest associations. Effective interventions are needed to improve the management of hand function in patients with SSc.7 p

The association of sociodemographic and disease variables with hand function: A Scleroderma Patient-centered Intervention Network cohort study

Objectives: Impaired hand function in systemic sclerosis (SSc) is a primary cause of disability and contributes diminished health-related quality of life. The objective of the present study was to evaluate sociodemographic, lifestyle, and disease-related factors independently associated with hand function in SSc. Methods: Patients enrolled in the Scleroderma Patient-centered Intervention Network Cohort who completed baseline study questionnaires between March 2014 and September 2017 were included. Hand function was measured using the Cochin Hand Function Scale (CHFS). Multiple linear regression analysis was used to identify independent correlates of impaired hand function. Results: Among 1193 participants (88% female), the mean CHFS score was 13.3 (SD=16.1). Female sex (standardised regression coefficient, beta =.05), current smoking (beta=.07), higher BMI (beta=.06), diffuse SSc (beta=0.14), more severe Raynaud's scores (beta=.23), more severe finger ulcer scores (beta=.23), moderate (beta=0.19) or severe small joint contractures (beta=.20), rheumatoid arthritis (beta=0.07), and idiopathic inflammatory myositis (beta=0.06) were significantly associated with higher CHFS scores (more impaired hand function). Consumption of 1-7 alcoholic drinks per week (beta=-0.07) was associated with lower CHFS scores (less impaired hand function) compared to no drinking. Conclusions: Multiple factors are associated with hand function in SSc. The presence of moderate or severe small joint contractures, the presence of digital ulcers, and severity of Raynaud's phenomenon had the largest associations. Effective interventions are needed to improve the management of hand function in patients with SSc

Physical or occupational therapy use in systemic sclerosis: A Scleroderma Patient-centered Intervention Network cohort study

Item does not contain fulltextObjective: Systemic sclerosis (SSc) is characterized by significant disability due to musculoskeletal involvement. Physical and occupational therapy (PT/OT) have been suggested to improve function. However, the rate of PT/OT utilization has been shown to be low in SSc. We aimed to identify demographic, medical, and psychological variables associated with PT/OT use in SSc. Methods: Participants were patients with SSc enrolled in the Scleroderma Patient-centered Intervention Network Cohort. We determined the rate and indication of PT/OT use in the 3 months prior to enrollment. Multivariable logistic regression was used to identify variables independently associated with PT/OT utilization. Results: Of the 1,627 SSc patients included in the analysis, 23% used PT/OT in the preceding 3 months. PT/OT use was independently associated with higher education (odds ratio [OR] 1.08, 95% confidence interval [CI] 1.04-1.12), having moderately severe small joint contractures (OR 2.09, 95% CI 1.45 - 3.03), severe large joint contractures (OR 2.33, 95% CI 1.14 - 4.74), fewer digital ulcerations (OR 0.70, 95% CI 0.51 - 0.95), and higher disability (OR 1.54, 95% CI 1.18 - 2.02) and pain (OR 1.04, 95% CI 1.02 - 1.06) scores. The highest rate of PT/OT utilization was reported in France (43%) and lowest in the USA (17%). Conclusion: Despite the potential of PT/OT interventions to improve function, less than 1 in 4 SSc patients enrolled in a large international cohort used PT/OT services in the last 3 months. Patients who utilized PT/OT had more severe musculoskeletal manifestations and higher pain and disability.9 p

Mental health care use and associated factors in systemic sclerosis: A Scleroderma Patient-Centered Intervention Network Cohort Study

Objective: Systemic sclerosis (SSc) has significant psychosocial implications. We aimed to evaluate the proportion of participants in a large international SSc cohort who used mental health services in a 3-month period and to evaluate demographic, psychological, and disease-specific factors associated with use. Methods: Baseline data of participants enrolled in the Scleroderma Patient-Centered Intervention Network Cohort were analyzed. We determined the proportion that used mental health services and the source of services in the 3 months prior to enrollment. Multivariable logistic regression was used to identify variables associated with service use. Results: Of the 2319 participants included in the analysis, 417 (18%) used mental health services in the 3 months prior to enrollment. General practitioners were the most common mental health service providers (59%), followed by psychologists (25%) and psychiatrists (19%). In multivariable analysis, mental health service use was independently associated with higher education (odds ratio [OR] 1.07, 95% confidence interval [CI] 1.03-1.11), smoking (OR 1.06, 95% CI 1.02-1.11), being retired (OR 0.60, 95% CI 0.38-0.93), having limited SSc (OR 1.39, 95% CI 1.02-1.89), and having higher anxiety symptom scores (OR 1.04, 95% CI 1.03-1.06) and lower self-efficacy scores (OR 0.90, 95% CI 0.83-0.97). Variables not significantly associated included age, race, disease manifestations, depression symptom scores, and body image distress. Conclusion: About 18% of participants in a large international cohort received mental health services in a 3-month period, of whom the majority received these services from a general practitioner

Effects of non-pharmacological and non-surgical interventions on health outcomes in systemic sclerosis: Protocol for a living systematic review

Introduction: Systemic sclerosis (SSc; scleroderma) is a rare, chronic, autoimmune disease with a high level of burden, a significant impact on the ability to carry out daily activities, and a considerable negative impact on health-related quality of life. Non-pharmacological interventions could be provided to potentially improve mental and physical health outcomes. However, the effectiveness of non-pharmacological interventions on health and well-being among individuals with SSc has not been well established. The proposed living systematic review aims to identify and evaluate randomised controlled trial (RCT) evidence on the effectiveness of non-pharmacological and non-surgical interventions on mental and physical health outcomes and on the delivery of such services in SSc. Methods and analysis: Eligible studies will be RCTs that examine non-pharmacological and non-surgical interventions aimed at improving health outcomes among individuals with SSc or the delivery of services intended to improve healthcare or support of people with SSc (eg, support groups). All RCTs included in a previous systematic review that sought studies published between 1990 and March 2014 will be evaluated for inclusion. Additional trials will be sought from January 2014 onwards using a similar, augmented search strategy developed by a health sciences librarian. We will search the MEDLINE, Embase, CINAHL, PsycINFO, Cochrane Library and Web of Science databases and will not restrict by language. Two independent reviewers will determine the eligibility of identified RCTs and will extract data using a prespecified standardised form in DistillerSR. Meta-analyses will be considered if >=2 eligible RCTs report similar non-pharmacological interventions and comparable health outcomes. We will conduct a qualitative synthesis for interventions that cannot be synthesised via meta-analysis. Ethics and dissemination: We will post initial and ongoing results via a website, publish results periodically via peer-reviewed journal publication, and present results at patient-oriented events. PROSPERO registration number CRD42020219914