Promocijas darbs

Elektroniskā versija nesatur pielikumusGlobalizācijas ietekme uz programmatūras izstrādi ir atzīta par ievērojamu vairāku pētījumu rezultātā. Unikālie faktori, kuri padara globāli sadalītu programmatūras izstrādes vidi par īpašu, palielina programminženierijas procesu sarežģītību un noved pie dažādām līdz šim nezināmām problēmām, ar kurām projektu pārvaldniekiem ir jācīnās par projekta veiksmīgu iznākumu. Šī disertācija ir veltīta globāli sadalīto projektu uzlabošanai, ar mēŗki novērtēt globālo projektu draudu bīstamību un nodrošināt pieeju projektu iznākuma izvērtēšanai. Risku Barometrs ir izstrādāts uz empīrisku datu bāzes no industrijas projektiem kā viens no centrāliem disertācijas rezultātiem. Tas aprēķina negatīvo seku varbūtību dažādiem globāliem draudiem, pamatojoties uz vēsturiskiem datiem. Šī pētījuma rezultāti nodrošina praktiķiem, kuriem trūkst zināšanu un pieredzes, metožu un rīku kopu efektīvai risku pārvaldībai, kā arī izmaksu un darbietilpības novērtēšanai globālajos projektos.The influence of globalization on software development has been recognized as significant by many studies. Existence of unique factors that distinguish globally distributed software development (GSD) environment increases the complexity of software development processes and brings challenges to project managers in achieving project success. This thesis describes research devoted to GSD project improvement, which aims to determine the severity of global threats and provide an approach for sustainable support in managing project outcome predictions. The author developed a Risk Barometer based on empirical data from industrial projects. It calculates the probability of negative outcome for global threats upon historical data. The results of this research provide practitioners that lack knowledge and experience a set of methods and tools for more effective risk management, as well as cost and effort estimation for a globally distributed project

Promocijas darbs

Elektroniskā versija nesatur pielikumusGlobalizācijas ietekme uz programmatūras izstrādi ir atzīta par ievērojamu vairāku pētījumu rezultātā. Unikālie faktori, kuri padara globāli sadalītu programmatūras izstrādes vidi par īpašu, palielina programminženierijas procesu sarežģītību un noved pie dažādām līdz šim nezināmām problēmām, ar kurām projektu pārvaldniekiem ir jācīnās par projekta veiksmīgu iznākumu. Šī disertācija ir veltīta globāli sadalīto projektu uzlabošanai, ar mēŗki novērtēt globālo projektu draudu bīstamību un nodrošināt pieeju projektu iznākuma izvērtēšanai. Risku Barometrs ir izstrādāts uz empīrisku datu bāzes no industrijas projektiem kā viens no centrāliem disertācijas rezultātiem. Tas aprēķina negatīvo seku varbūtību dažādiem globāliem draudiem, pamatojoties uz vēsturiskiem datiem. Šī pētījuma rezultāti nodrošina praktiķiem, kuriem trūkst zināšanu un pieredzes, metožu un rīku kopu efektīvai risku pārvaldībai, kā arī izmaksu un darbietilpības novērtēšanai globālajos projektos.The influence of globalization on software development has been recognized as significant by many studies. Existence of unique factors that distinguish globally distributed software development (GSD) environment increases the complexity of software development processes and brings challenges to project managers in achieving project success. This thesis describes research devoted to GSD project improvement, which aims to determine the severity of global threats and provide an approach for sustainable support in managing project outcome predictions. The author developed a Risk Barometer based on empirical data from industrial projects. It calculates the probability of negative outcome for global threats upon historical data. The results of this research provide practitioners that lack knowledge and experience a set of methods and tools for more effective risk management, as well as cost and effort estimation for a globally distributed project

Psychosomatic aspects of chronic low back pain syndrome

The purpose of the study was to determine the relationships between emotional distress and pain syndrome, its characteristic parameters and impact on the quality of life in patients with chronic low back pain. The study included 110 patients, mean age 44.2 ± 8.0 years, with clinical diagnosis of lumbar spine disk pathology with chronic low back pain syndrome. The results showed that the studied patients differed by their emotional state. Emotional distress was associated with high intensity and specific symptoms of low back pain syndrome. Musculoskeletal dysfunction was associated with both physical and psychoemotional factors. The interaction of chronic low back pain syndrome complexity and biopsyhosocial factors is shown by a correlation between cytokines IL- 10 and IL-8 level in blood serum and both pain intensity and duration, characteristics of emotional and physical status, and level of physical activities.publishersversionPeer reviewe

Nordic Walking or Traditional Walking in Patients With Intermittent Claudication: A Critical Review

Regular exercises can improve walking distance and reduce physical impairment in patients with intermittent claudication. The objective of the research is to summarise and analyse the existing proof about the comparative effectiveness of Nordic walking and traditional walking in the improvement of health indicators in patients with intermittent claudication. Methods: The following online databases were used as sources for data collection: Ebsco, Sience Direct, Clinical Key, ProQuest, Scopus. The selection of works of research was performed on the basis of key words “Nordic walking”, “intermittent claudication”, “walking with poles”, “Nordic walking and walking and intermittent claudication” and the year of publishing (that is, from 2005 till 2015). Inclusion criteria met four works of research that were included in the critical analysis. Results and conclusions: There is no proof about the superiority of the Nordic walking programme over traditional walking (and there exist indications about the superiority of the traditional walking programme) in the improvement of helath indicators, but patients with intermittent claudication feel less discomfort during Nordic walking and they can cover a longer distance by using poles

Activity of Scapular Muscles : Comparison of Open and Closed Kinetic Chain Exercises

The function of the shoulder region and cervical spine are regulated by the motor control of the scapula. It is important to selectively activate weak muscles and minimally involve tense muscles to improve scapular motor control. The objective of this study was to compare the activity of scapular muscles and the intramuscular balance during various open and closed kinetic chain exercises. Methods: This study included 20 female sedentary office workers. A surface electromyography was used to analyze the activity of the scapular muscle in the correct exercise starting position and during 6 different exercises. Additionally, the optimal intramuscular balance was examined. Results and conclusions: Open kinetic chain exercises is more suitable than closed kinetic chain exercises for training scapular active stability. Horizontal shoulder abduction with external rotation (scapula retraction and internal rotation) while in the prone position was optimal and could be recommended (as well as its modifications with a resistance band) for training programs to improve scapula active stability.publishersversionPeer reviewe

Individualized home-based exercise program for idiopathic pulmonary arterial hypertension patients : A preliminary study

Publisher Copyright: © 2019, ČKS.Background: Exercise-based rehabilitation has been proved as a benefi cial additional non-pharmacological treatment in patients with stable pulmonary arterial hypertension (PAH). Majority of studies include hospital-based supervised programs. To improve patient accessibility to this important intervention and long-term efect the research on home-based programs is warranted. The purpose of our study was to evaluate the adherence, safety, training efects of 12-week individualized home-based exercise program in patients with idiopathic PAH. Methods: This was a prospective pilot uncontrolled interventional study. Six patients with iPAH confi rmed by right-heart catheterization from the Latvian PAH registry were selected. A 12-week exercise program adaptable for each patient's functional state and home environment was created. The program included muscle strength training, respiratory, aerobic exercise and neuro-muscular relaxation techniques, self-control monitoring, weekly phone control and on-site re-assessment by physiotherapist were parts of the program to ensure both individualized adjustments and proper execution, and to maximize clinical safety. The primary outcome measures for training efects were exercise capacity, breathing pattern and quality of life, for adherence days of performance, for safety any event of "alarm sign" indicators during exercising, incomplete recovery, worsening of PH symptoms. Results: The results showed a rather high degree of adherence to the prescribed exercise regimen (in average 92.5%). No adverse events were observed during the course of the program. The results proved the importance of ensuring optimal self-control skills both for objective measures and subjective symptoms. The 6-minute walking test (6MWT) results show that the developed program signifi cantly improves exercise capacity (mean improvement 39 ± 17.5 m). In four participants (66.7%) the minimum clinically important diference (MCID) for 6MWT distance in PAH patients was observed (25-33 m). Signifi cant improvement in chest excursions confi rm changes in breathing pattern suggesting better engagement of diaphragm during breathing after the program. Results did not show signifi cant improvements in either SF-36 survey domain. However, half of the participants reached MCID (11%) after the program at the physical health subscales. Conclusion: The results of this preliminary study prove that the created individualized home-based exercise program is safe, easily followed and allows progression in exercise intensity and improves physical functional state in clinically stable iPAH patients. This study hypothesis supports the need for RCT to continue research and approve the results.publishersversionPeer reviewe

Individually tailored 12-week home-based exercise program improves both physical capacity and sleep quality in patients with pulmonary arterial hypertension

Publisher Copyright: © 2021, ČKS.Background: Most patients with optimal PAH-targeted medical therapy suffer from clinical symptoms, reduced exercise tolerance and have a poor quality of life. The 2019 European Respiratory Society task force statement on physical exercise and rehabilitation in patients with severe, chronic PH suggests that individually adjusted and monitored exercise programs are likely to be safe for PH patients, who are clinically stable on medical therapy. Currently, the development of PAH-specific rehabilitation interventions is still in the research stage. We present the preliminary results of a more extensive study with the aim to show the effectiveness of a 12-week individualized, home-based exercise program in promoting physical capacity, quality of sleep and reducing signs of emotional distress in patients with PAH. Methods: This was a prospective randomized controlled interventional study. 16 PAH patients were included in the analysis. Training group underwent a complex training program, consisting of 12-week individually tailored home-based exercise training, education, self-control measures and tele-rehabilitation components. The program included muscle strength training, respiratory, aerobic exercise and relaxation techniques. Results: A statistically significant mean increase in 6MWT distance was observed for the training group (Δ = 51.7 ± 45.1 m). In six participants (66.7%) from the training group and two patients (28.6%) from the control group, the minimal clinically significant difference for 6MWT distance was observed (25–33 m). IPsubmax test results changed significantly in training group (Δ = 9.8 ± 4.7 cm H20). PSQI values sleep quality improved from poor to good in four (44.5%) patients from training group. HADS sub-scales scores values confirmed clinically important reduction of anxiety symptoms in both groups. Depression symptoms did not show clinically important changes. No adverse events were observed. Conclusion: The studied 12-week individually tailored home-based exercise program is effective in stable PAH patients by improving physical functional capacity, as well as sleep quality. Further studies are required to solidify the methodology of exercise programmes in the field of PAH. These are the preliminary results of ongoing study.publishersversionPeer reviewe