341 research outputs found
Psychoemotional and Ergonomics Risks in State LLC “Riga Psychiatric and neurology Center”
No full textPsihoemocionālo un ergonomisko darba vides risku novērtējums Valsts SIA „Rīgas psihiatrijas un narkoloģijas centrs”. Diplomdarbu izstrādāja Andris Žukovskis, darba zinātniskais vadītājs Doc. Dr. med. Ženija Roja
Diplomdarbā ir lappuses, 25 tabulas, 18 attēli, izmantoti 33 literatūras avoti, 2 pielikumi. Latviešu valodā.
Atslēgvārdi: PSIHOEMOCIONĀLIE RISKI, ERGONOMISKIE RISKI, PSIHIATRIJA, SGR-A METODE, NIOSH METODE, ĀEK METODE, IZDEGŠANAS SINDROMS, DARBA VIDE.
Diplomdarba izstrādes gaitā veikta darba vides risku identificēšana un novērtēšana uzņēmumā. Darba gaitā tika veikta darbinieku aptauja, īpašu uzmanību pievēršot psihoemocionālo un ergonomisko risku identificēšanai un novērtēšanai. Risku novērtēšanā tika izmantotas SGR-A, ĀEK, NIOSH, Psiholoģiskā klimata darba vidē novērtēšanas metodes.
Tika izstrādāti priekšlikumi darba vides uzlabošanai un riska faktoru novēršanai vai samazināšanai.Evaluation of psychoemotional and ergonomic work environment risks in "Riga psychiatric and narcology centre Ltd." Diploma work was written by Andris Žukovskis. Supervisor Doc. Dr. med. Ženija Roja.
In Graduation work there are pages, 25 tables, 18 pictures, 2appendixes are used 33 literature sources, and addition in Latvian language.
Keywords: PSYCHOEMOTIONAL RISKS, ERGONOMIC RISKS, PSYCHIATRY, SGR-A METHOD, NIOSH EQUATION, BURNOUT SYNDROME, WORK ENVIRONMENT
During development of this work the author identified work environment risks in the company. The author conducted survey of employees, concentrating on identifying and evaluating psychoemotional and ergonomic risks. Risks were evaluated using KIM-A, QEC, NIOSH, Work related stress index determination, work environment's psychological climate and violence risk evaluation methods.
The author developed suggestions for improvement of work environment and evaluating or decreasing risk factors
Occupational and work environment risks for pregnant employees and suggestions to improve labour protection system in Latvia
No full text“Darba vides riski strādājošām grūtniecēm un priekšlikumi darba aizsardzības sistēmas pilnveidošanai Latvijā”. Maģistra darbs. Darba autore: Ieva Melbārde. Darba zinātniskais vadītājs: Dr. chem., asociētais profesors Andris Alfrēds Spricis. Darbs izklāstīts uz 85 lpp, ietver 17 attēlus, 13 tabulas, 1 pielikumu, 66 informatīvos avotus. Latviešu valodā. Pētījuma pirmā daļa - literatūras analīze uzrāda darba vides riska faktoru negatīvu ietekmi uz grūtniecēm, darba aizsardzības pasākumu efektivitāti to ietekmes novēršanai. Otrajā daļā ir raksturotas pētījuma metodes - autores izstrādāta neklātienes aptauja, NIOSH vienādojums, pāru regresijas analīze. Pētījumā piedalījušās 797 sievietes. Pētījums apstiprināja hipotēzi, ka Latvijā netiek pietiekami novērsti kaitīgie darba vides riska faktori grūtniecēm.Occupational and work environment risks for pregnant employees and suggestions to improve labour protection system in Latvia. Author: Ieva Melbarde, supervisor: Dr. chem., asoc. prof. Andris Alfrēds Spricis. Master's thesis, 85 pages, 17 figures, 13 tables, 1 appendix, 66 literature references. In Latvian. First part of the research - analysis of a literature shows negative influence of a work environment risk factor on pregnant women, effectiveness of an occupational risk influence prevention. Second part features research methods such as online survey created by the author, NIOSH equation, regression analysis. 797 women took part in the research. Research confirmed a hypothesis that harmful occupational risk factors for pregnant women are not prevented enough in Latvia
Grotesque in Margeris Zarins and Andris Jakubans prose
No full textMaģistra darba „Groteska Andra Jakubāna un Marģera Zariņa prozā” mērķis ir izpētīt abu autoru groteskas elementu realizāciju un to nozīmi prozas darbos. Abi autori ir spilgti sava laika (20.gs. 60.–80. gadu) pārstāvji latviešu literatūrā. To netradicionālais skatījums uz pasauli un cilvēkiem paver jaunus impulsus uz neviennozīmību tekstos. 20.gs. 60.–80. gados latviešu kultūrtelpa, arī literatūra pastāvēja padomju režīma apstākļos, kuros autori tika kontrolēti no varas pārstāvju puses, kā arī literatūra cieš no pašcenzūras. Jebkurš autors apzinās, ka ideoloģiski nepiemērotus tekstus vai to fragmentus no darba var izņemt, tādēļ jau laikus sāk sevi ierobežot. Abu rakstnieku proza tiek saistīta ar groteskas paņēmieniem, kas nav plaši izmantota parādība latviešu autoru tekstos. Darbs strukturēts piecās daļās daļās – to veido kultūrvēsturiskā, teorētiskā un tekstu praktiskā analīze.The aim of the Master’s thesis “Grotesque in Andris Jakubāns’ and Merģeris Zariņš’ prose” is to evaluate realization and meaning of grotesque elements in both authors prose. Andris Jakubāns and Marģeris Zariņš are noticeable literates of their time in Latvian literature. The unique point of view of theirs on the world and people around them opens new impulses on ambiguity. In 20th century (60. –80.) Latvian cultural environment, as well as literature, which existed under the Soviet regime, authors, their works, and criticism, was controlled to ideological views laid down, as well as self – censorship. Any author is aware that the ideologically inappropriate texts or fragments of any work can be removed, so early on starts to limit themselves. The prose of both – Merģeris Zariņš and Andris Jakubāns is associated with grotesque, which is not widely used in the texts of Latvian authors. Work is structured in five parts – it consists of cultural and historical, theoretical and practical analysis
Priekšējās retroperitoneālās pieejas priekšrocības iegurņa kaulu lūzumu osteosintēzē. Promocijas darba kopsavilkums
No full textThe Doctoral Thesis was carried out in the Department of Traumatology and Orthopaedics of Rīga Stradiņš University and Clinic of Traumatology and Orthopaedics of Riga East University Hospital (REUH) “Gaiļezers”. Defence: at the public session of the Doctoral Committee of Medicine on 25 November 2015, at 14.00 in RSU Medical Education Technology Centre (METC), 26a Anniņmuižas Blvd, Rīga.Scientific and technical progress has conditioned the rise in the number of high energy traumas of the musculoskeletal system. Simultaneously, the number of pelvic fractures has proportionally risen, on average they constitute up to 3% of the total number of bone fractures. The majority of pelvic fractures, i.e. approximately 75%, are considered to be severe and critical musculoskeletal injuries. Pelvic fractures are diagnosed in 18% of cases in the polytrauma patients. Open pelvic fractures constitute 1% of the total number of pelvic fractures, in turn, according to the data provided by different authors, mortality rate in case of open pelvic fractures may reach 50%. Pelvic fractures, intra-articular fractures in particular, relatively often (~10% cases) lead to permanent disability due to the development of posttraumatic osteoarthrosis in hip joints and the following endoprosthetic replacement of the hip joint. Although the application of ilioinguinal approach has yielded good practical results, treatment results necessitate that new approaches in surgical treatment are sought. For example, extraperitoneal approach performed through a lower midline incision was first described by E. Hirvensalo in 1992 and L.D. Cole in 1994. This surgical treatment approach in case of pelvic ring and acetabular fractures is relatively widely used in the USA and Finland. In Latvia, this approach to the treatment of pelvic ring and acetabular fractures was introduced in 2008 by the author of the present Thesis at RAKUS Clinic of Traumatology and Orthopaedics (The Head of the Department and scientific supervisor of the Doctoral Thesis professor A. Jumtiņš, the Head of the Clinic Dr. med. G. Lācis). Using this surgical approach, 48 patients were operated in the period from October 2008 to May 2012. The treatment results of 35 patients out of 48 have been analysed in the present study. 34 patients from the control group were operated using conventional anterior ilioinguinal approach. The present study provides a comprehensive review of the opportunities offered by the application of the surgical treatment approach under discussion, its complications, results and advantages over other surgical approaches, using this approach in the treatment of the patients with unstable pelvic ring and acetabular fractures. Having summarised and analysed research results, the author has developed an algorithm for the application of various surgical approaches to be used in the treatment of pelvic fractures depending on the type of fracture. The study was conducted in the period of four years. On average, about 12 pelvic surgical operations were performed annually on the previously systematised patients. Based on the exclusion and inclusion criteria, out of 48 patients treated using anterior retroperitoneal method, treatment results of only 35 patients were analysed. In the control group, the data of 34 patients were systematised and their treatment results were analysed. Processing of radiological examination data and the measurements were performed in the digital form using Centricity PACS-IW software and local intranet. Mathematical measuring and Majeed functional scoring scales were used in further processing of the obtained data. The work hypothesis nominated – front extraperitoneal approach compared to ilioingvinal approach in cases of complex pelvic fracture allows shorter operative time, less intraoperative blood loss, smaller perioperative hemotransfusion amount, better postoperative radiological parameters of the pelvic bone fragments and late postoperative functional results. The aim of the study – to explore the anterior retroperitoneal and ilioingvinal surgical approach of operative and postoperative period of the clinical and radiological parameters as well as differences in postoperative functional outcomes in patients with complex pelvic fractures, and based on the results obtained, to elaborate and develop recommendations for implementation in practical traumatology surgery. Conclusions. The analysis of surgical parameters (duration of surgery, blood loss during surgery, hemotransfusion amount), surgical correction of postoperative radiological parameters and late postoperative functional results in patients with complex pelvic fractures, in cases of the anterior retroperitoneal approach are statistically significantly better than in cases of ilioingvinal approach. Anterior retroperitoneal approach in cases of complex pelvic fracture is safe and provides qualitative pelvic bone fragments for osteosynthesis
Dropout method for XGBoost algorithm
No full textTika izpētīta izslēgšanas metode, DART algoritms, XGBoost algoritms un XGBoost algoritma hiperparametri (α, λ, γ, srinkage un subsample), kas saistīti ar modeļa regularizāciju un pārpielāgošanas samazināšanu. Tika izpētīti un attēloti izslēgšanas metodes un XGBoost hiperparametru efekti uz atsevišķu lēmumu koku ietekmi uz ansambļa prognozi un efekti uz modeļu pārpielāgošanos. Iegūtie attēli tika salīdzināti starp izslēgšanas metodi, XGBoost modeļiem ar regularizācijas hiperparametriem un XGBoost modeli bez regularizācijas.Dropout method, DART algorithm, XGBoost algorithm and XGBoost hyperparameters (α, λ, γ, srinkage un subsample) related to model regularization were researched. Ways of graphically depicting the effect of dropouts and XGBoost hyperparameters on the contribution of individual decion trees on the output of the model and on the overfit of the model were researched and employed. The obtained plots were compared between models with XGBoost parameters and models with dropouts as well as a XGBoost model without any regularization
Analysis of the marketing activities of Balvi region municipality and its development possibilities.
No full textDarba tēma: Balvu novada pašvaldības mārketinga darbības analīze un tā attīstības iespējas. Darba autors: Andris Zeps Darba mērķis: analizēt Balvu novada pašvaldības mārketinga darbības un izstrādāt mārketinga darbības attīstības iespējas. Darba pirmajā nodaļā autors apkopo teorētisko pamatojumu par mārketinga definīciju un teritoriālā mārketinga jēdzienu, mārketinga stratēģiju veidiem, teritoriālā mārketinga uzdevumiem un nozīmi pašvaldības darbībā. Darba otrajā nodaļā autors veic Balvu novada pašvaldības raksturojumu, veic teritoriālā mārketinga pielietojuma izpēte, izstrādā Balvu novada pašvaldības mērķauditorijas raksturojumu, izstrādā Balvu novada SVID matricu un interpretē intervijas laikā ar Balvu novada pašvaldības pārstāvi iegūtos datus. Darba trešajā nodaļā autors izstrādā Balvu novada pašvaldības mārketinga darbības iespējamos virzienus, uzsverot teritoriālā mārketinga kompleksa elementu nozīmi. Pētījuma rezultāti liecina, ka Balvu novada stiprās puses ir kultūras centrs un tā filiāles, bagāts kultūrvēsturiskais mantojums, sadarbība ar kaimiņvalstīm- starptautiskie projekti, lauksaimniecības zemes, mežsaimniecība, iedzīvotājiem būtisku iestāžu atrašanās Balvu pilsētā, centralizēta pārvalde. Balvu novada pašvaldība veic plašus pasākumus ar nolūku informēt sabiedrību, taču nav izstrādāta mārketinga stratēģija un teritoriālā mārketinga stratēģija. Nav izstrādāti tūrisma maršruti, kā arī nav vienotas ainavas koncepcijas, nav pieejama vienota informācija par apskates objektiem. Darbs sastāv no 61 lappuses, 2 attēliem, 2 tabulām, 1 pielikuma 38 literatūras avotiem.Theme of work: Analysis of marketing activities of the municipality of Balvi and its development possibilities. Author of work: Andris Zeps The aim of the work: to analyze the marketing activities of the Balvi municipality and to develop opportunities for development of marketing activities. In the first chapter the author summarizes the theoretical justification of the definition of marketing and the concept of territorial marketing, types of marketing strategies, tasks of territorial marketing and its importance in the activities of the municipality. In the second chapter the author performs the characterization of the Balvi municipality, studies the application of territorial marketing, elaborates the target audience, elaborates the SWOT matrix and interprets the data obtained during the interview with the representative of the Balvi Region Municipality. In the third chapter the author develops the potential directions of marketing activities of the Balvi municipality, emphasizing the importance of elements of the territorial marketing complex. The results of the research show that the strengths of the Balvi region are the cultural center and its branches, rich cultural and historical heritage, cooperation with neighboring countries - international projects, agricultural land, forestry, the presence of local authorities in Balvi, centralized administration. Balvi region municipality is undertaking large-scale events with the aim of informing the public, but no marketing strategy and territorial marketing strategy have been developed, tourism routes have not been developed. The work consists of 61 pages, 2 pictures, 2 tables, 1 annex and 38 literature sources.
The improvement of marketing strategic planning in the "Rembis" enterprise
No full textAutors: Romualds Urbāns
Darba nosaukums: Marketinga stratēģijas plānošanas pilnveidošana uzņēmuma SIA „Rembis”
Zinātniskais vadītājs: Dr.oec.prof. Andris Deniņš
Darba mērķis bija izpētīt, izanalizēt un pilnveidot uzņēmuma SIA „Rembis” stratēģiju un darbību virtuves mēbeļu tirgū.
Darba uzdevumi:
-Izskatīt marketinga stratēģiskās plānošanas uzdevumu, kā arī tās galvenās metodes un virzienus
-Izanalizēt firmas „Rembis” marketinga vidi
-izanalizēt konkurentu marketinga vidi
-Veikt biznesa portfeļa analīzi
-Pilnveidot marketinga stratēģiju
Marketinga stratēģija ir būtiskais uzņēmuma vadības instruments, kas sastāv no cenu veidošanās, sortimenta un preces kvalitātes stratēģijām, preces virzīšanas tirgū stratēģijām, kā arī visizdevīgāko tirgus segmentu noteikšanas stratēģijas.The author: Romualds Urbāns
The name of the research paper: Improvement of SIA „Rembis” marketing strategy planning
The scientific adviser: Dr.oec.prof. Andris Deniņš
The aim of the research was to examine, analyse and improve the strategy and activities of SIA „Rembis” on the market of kitchen furniture.
The posed tasks:
-To examine the task of marketing strategic planning, as well as its main methods and trends
-To analyse the marketing environment of SIA „Rembis”
-To analyse the marketing environment of its rivals
-To make an analysis of business portfolio
-To improve the marketing strategy
Marketing strategy is an important tool of enterprise administration that consists of strategies of price formation, range of goods and quality of goods, strategies of goods promotion to the market, as well as strategies of determining the most profitable market segments
Graduate of Riga Polytechnic Institute, Athletics Statistician Andris Staģis
No full textThe article summarizes the achievements of Andris Staģis, a graduate of the Faculty of Civil Engineering of Riga Polytechnic Institute (RPI; 1968), in the profession of an engineer, as well as reveals his contribution to the history and statistics of Latvian sports, achievements in athletics and their promotion. This is the first study on the activities and life of engineer, officer of the Order of the Three Stars, Latvian champion in athletics and the author of sports history books, and journalist A. Staģis. The aim of the research is to reveal the contribution of A. Staģis and the significance of his personality to Latvia using his and the authors’ personal archives, documents of the State Archives of Latvia, and the collection of the National Library of Latvia
Peridynamic Analysis of Rail Squats
Full text linkRail surface defects are a serious concern for railway infrastructure managers all around the world. They lead to poor ride quality due to excess vibration and noise; in rare cases, they can result in a broken rail and a train derailment. Defects are typically classified as ‘rail studs’ when they initiate from the white etching layer, and ‘rail squats’ when they initiate from rolling contact fatigue. This paper presents a novel investigation into rail squat initiation and growth simulations using peridynamic theory. To the best of the authors’ knowledge, no other comprehensive study of rail squats has been carried out using this approach. Peridynamics are well-suited for fracture problems, because, contrary to continuum mechanics, they do not use partial-differential equations. Instead, peridynamics use integral equations that are defined even when discontinuities (cracks, etc.) are present in the displacement field. In this study, a novel application of peridynamics to rail squats is verified against a finite element solution, and the obtained simulation results are compared with in situ rail squat measurements. Some new insights can be drawn from the results. The outcome exhibits that the simulated cracks initiate and grow unsymmetrically, as expected and reported in the field. Based on this new insight, it is apparent that peridynamic modelling is well-applicable to fatigue crack modeling in rails. Surprisingly, limitations to the peridynamic analysis code have also been discovered. Future work requires finding an adequate solution to the matter-interpenetration problem
- …
