1,720,964 research outputs found
Investigate of goods free movement assurance in EC countries
No full textBakalaura darba mērķis ir noskaidrot kā notiek brīvā preču kustība EK valstīs, noskaidrot būtiskākos preču kustības aspektus, izpētīt tirgus uzraudzību Latvijā, atklāt problēmas un dod priekšlikumus problēmu risināšanā.
Bakalaura darbs sastāv no četrām nodaļām. Pirmajā nodaļā tiek izpētīta teorētiskā informācija par brīvo preču kustību EK valstīs. Otrā nodaļa iepazīstina ar tirgus uzraudzības iestādēm. Trešajā nodaļā tiek izpētīta sanitārās robežinspekcijas loma. Pēdējā ceturtā nodaļa ir veltīta Latvijas tautsaimniecības attīstības pārskatam.
Darbā tiek lietotas vairākas metodes. Loģiski - konstruktīvā metode, grafiskā metode, analīzes metode, kā arī zinātniskās dedukcijas metode.
Bakalaura darba apjoms ir 89 lappuses un tajā ir iekļauti 19 attēli un 3 tabulas.Bachelor's job is to clarify the operation of the free trade movement in the EC (European Community) countries, to clarify the essential aspects of the movement of goods, to explore the Latvian market surveillance, to detect problems and make proposals for solving problems.
Thesis consists of four chapters. The first chapter examines the theoretical information on the free movement of goods within the EC countries. The second chapter presents the market surveillance authorities. The third chapter examines the role of sanitary border inspection. Last fourth chapter is devoted to the Latvian Economic Development Review.
In thesis is used several methods. Logical - in a constructive method, graphical method, analysis method and deductive scientific method.
Bachelor's volume of work is 89 pages and contains 29 figures and 25 tables
ROLE OF HAMSTRING MUSCLES IN KNEE JOINT STABILITY PROVIDING AND INJURY PREVENTION
Get PDFThe aim of our investigation was to determine the ratio of maximal torque values and the torques in the certain positions of range of movements (ROM) between hamstring (H) and quadriceps femoris (Q) muscles at medium and high velocity of movement in concentric (CC) and eccentric (ECC) action of hamstring muscles. The knee muscles of 15 amateur female short and middle distance runners were tested by the dynamometer system in the isokinetic movements with the angular velocity of 90º/s and 240º/s in CC and at the velocity of 90º/s in ECC H/ CC Q muscles contractions. The torque values produced by the muscles are detected at the different angular positions of the ROM with the step of 10º. The ratios of H/ Q muscles torques are calculated. The H/Q muscles maximal torques ratio is 0.51 ± 0.13 at the velocity of 90º/s in CC and 0.60 ± 0.09 in ECC H/ CC Q muscles contractions, and 0.59 ± 0.09 CC at the velocity of 240º/s. The H/Q maximal torques ratio and this ratio in the knee extreme extension and flexion at the ECC contraction of H is higher due to greater torques produced by the H in comparison with Q muscle. The H must be stronger to decelerate the thigh and lower leg extension in the late swing phase of running and to extend the hip in early stance phase to provide powerful sprint running and prevent the knee and H injury. The H/Q muscles torques ratio in extended knee positions are similar in medium (90º/s) and fast (240º/s) velocity of motions because CC action of H muscles cannot prevent extreme knee extension
Urīna īpatnējais svars kā sportistu ķermeņa hidratācijas pakāpes rādītājs
No full textMērķis bija noteikt urīna īpatnējo svaru futbolistiem miera stāvoklī un tā variēšanu atkarībā no ķermeņa liesās masas un kopējā ūdens daudzuma ķermenī. Piedalījās 57 vīriešu dzimuma virslīgas komandu futbolisti. Ķermeņa hidratācijas pakāpe tika noteikta ar urīna refraktometriju, ķermeņa masas sastāvs ̶ ar bioelektriskās impedances metodi. 49% futbolistu pirms treniņa bija hipohidratētā ķermeņa stāvoklī: 44% mēreni un 5% izteikti hipohidratēti. Futbolistu šķidruma uzņemšanas stratēģija ir ļoti svarīga. Bioelektriskās impedances metode ir pārāk neprecīza ķermeņa hidratācijas novērtēšanai
Evaluation of Endurance Physiological Characteristics in Road Cyclists
Get PDFThe purpose of our investigation was to determine the most informative physiological characteristics to monitor training effect in highly qualified road cyclists.Fourteen Latvian Olympic Team road cyclists with training experience from seven to nine years participated in theinvestigation voluntarily (their average age was 19.3 ± 1.1 years, height — 183.6 ± 5.4 cm, body mass — 73.4 ± 3.8 kg). The aerobic performance tests were carried out in the Latvian Olympic Team Laboratory at the initial and middle phase of their preparation period of training. The initial load of 27 W was increased every two minutes step by step by 12 W. The cardiopulmonary diagnostic equipment was used to register the electrocardiograms and respiratory characteristics. The lactic acid concentration in the capillary blood was tested. The maximal oxygen uptake (4.62 ± 0.40 l / min and 63.2 ± 4.8 ml / kg·min) and power output (376 ± 36 W and 5.13 ± 0.44 W / kg) in the cyclists were significantly lower in comparison with the data received by other authors. At the initial or middle phase of the preparation period of training these characteristics did not reach their maximal values. The oxygen uptake (3.85 ± 0.30 l / min and 52.6 ± 3.7 ml / kg·min) and power output (296 ± 28 R and 4.04 ± 0.33 W / kg) at the anaerobic threshold intensity load were in a good agreement with the data of other investigators. These characteristics depend on the central and peripheral mechanisms of aerobic capacity in the cyclists, and are useful in the estimation and monitoring of the endurance performance. The data reported by different authors of aerobic threshold physiological characteristics in highly qualified cyclists were contradicting, which can be explained by different test protocols and differences in the rate of lactate accumulation in the capillary blood, especially in the initial phase of the test. Our investigations showed that the oxygen uptake was 2.57 ± 0.35 l / min and 35.0 ± 4.7 ml / kg·min, and power output was 182 ± 36 W and 2.48 ± 0.47 W / kg. The mechanical efficiency (21.9 ± 1.2%) and economy of cycling movements (4.602 ± 0.268 kJ / l) in the cyclists reached their maximal values at the anaerobic threshold, which is the intensity of load specific to road cycling. It proves high homogeneity of the mechanical efficiency and economy of movements among the cyclists, and lack of the significant correlation between these characteristics and the power output on the bicycle ergometer (r = 0.19 and 0.20, respectively; p > 0.05).Keywords: cycling, aerobic capacity, work mechanical efficiency, aerobic and anaerobic thresholds
Plecu joslas muskuļu adaptācija treniņiem handbolā pusaudžu vecuma spēlētājiem
No full textMērķis: noteikt pleca rotatoru muskuļu (RM)
maksimālo spēka momentu - (max) attiecību handbolistiem un
sakarību starp iekšējo RM spēku un bumbas metiena ātrumu.
Pleca rotācijas kustības tika pētītas ar dinamometru sistēmu
izokinētiskās kustībās. Bumbas metiena ātrums tika mērīts ar
optisku ierīci. Piedalījās 16 vīriešu dzimuma pusaudži.
Ārējo/ iekšējo RM - (max) attiecība pusaudžiem ir mazāka nekā
pieaugušajiem. Tāpēc treniņos ir jāiekļauj vingrinājumi ārējo
RM spēka attīstīšanai. Noteikta pozitīva korelācija starp iekšējo
RM attīstīto - (max) un bumbas metiena ātrumu
A Review of the Effect of Resistance Exercise on Development of Anaerobic and Balance Performance in Adolescent Footballers
Get PDFBackground: The resistance exercises underpin the strength and power development of muscle activation in adolescent footballers. Objective: The study purposed to review the effectiveness of different resistance exercise models on improving anaerobic and balance characteristics among young football players. Methods: A systematic search of Scopus, SPORT Discus, and the Web of Science was undertaken to identify the study content using a combination of searches related to resistance exercise, balance, and anaerobic performance. Titles and abstracts were used to search for keywords, and data were extracted using the subject characteristics, training intervention, measurement, and outcomes. Results: Fourteen studies were identified that investigated the effects of resistance programs on the anaerobic and balance characteristics. A combination of plyometric and regular football training significantly improved the anaerobic characteristics, and balance performance in young footballers. Based on high-quality evidence, anaerobic and balance performance enhancement appears after conducting resistance exercises for approximately eight weeks, with two to three sessions on alternate days a week. The volume consists of 2-3 sets per exercise, 6-12 repetitions per set, and intensity was classified as moderate to high, with one repetition maximum. Conclusion, Integrating resistance exercise into the regular training sessions improves the anaerobic performance of young footballers, such as jumping, sprinting, and changing direction, while improving balance ability, indicated by reducing the center of pressure area side-asymmetry and sway speed during unipedal and bipedal leg stance
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
