34 research outputs found
THE COMPLEX USE OF COMPUTER AND VIDEO FOR KINEMATIC STUDIES
The important problem of modern sport is the technical training of sportsmen. A successful solution of this problem is impossible without deep study of the structure of athletes' movements.
The video complex used in our research includes hardware and software programs. The hardware include:
-ordinary computer;
-video camera and videotape-recorder;
-and non-standard equipment (video processor for the transmission of video signals digitally in computer's memory).
The fragments, made in conditions of training or competition, are digitized by means of special video charges, which allow one to convert a video signal into numerical form. All fragments will be converted into files in the AVI format (Video for Windows). It is possible to reproduce these files on the screen of the monitor with the help of the Microsoft Windows universal player-standard program.
It is possible to demonstrate a file once or as a film-ring, frame by frame rewinding and in a freeze-frame.
Stopping a video fragment is accompanied by fixing a frame and stopping the time. A standard program package ensures access to each frame of the video sequence. Consequently, any frame may be put in correspondence to time. This allows one to calculate a phase structure of athletic action and determine cinematic features of sport technique.
For biomechanical studies special attention is paid to the programs for editing photos. Any frame may be copied and inserted in the file of the Microsoft Photo Editor or Microsoft Photo Shop. Each point of this photo will correspond to a pair of coordinates, shown on the screen of the monitor. Having copied several frames in given time intervals, one can define a change of the coordinates of points in dependence upon time.
In this way it is possible to calculate a speed or velocity of motion, and other facts interesting for the researcher. By the way, a standard effects kit allows one to change the brightness, contrast, color to find the position of checkpoints on investigated objects (it may be a body or athletic equipment). One can expose a necessary balance on photos by changing offered parameters in the Preview window or using autobalance, calculated by the computer. A given photo is easy to print.
A series of such photos may be used as a kinogramma and provide the basis for biomechanical calculations.
In order to add graphic elements to a photo use the Paint editor. The offered way of registration allows one to apply practically any study of movement by athletes with pixel accuracy
Institutional analysis of resource potential for knowledge generation in the enterprises of the regional military-industrial sector
This article discusses the processes of knowledge generation in the enterprises of the military-industrial sector that are the leaders of innovation in the region. The purpose of the study is to develop a methodology based on using the resource potential to improve the efficiency of knowledge generation in the instrument- making enterprises of the military-industrial sector. The authors conducted a system analysis of knowledge generation in one of the enterprises of the military-industrial sector that led to the conclusion on the chaotic character of knowledge generation in such enterprises and its insufficient provision with institutions. The authors proposed a method for designing a knowledge generation system in the enterprises of the regional military-industrial sector by taking into account the means and capabilities of the enterprise in the implementation of intellectual activities. The developed method is based on defining the horizontal resource potential of knowledge generation and allows to determine the potential use of resources at each stage of the product lifecycle. The comparison of actual and theoretical values of horizontal resource potential will allow to adjust the allocation of share held by each of the resources within the stage, and thereby optimize the implementation of tasks at a particular stage. The proposed tools were tested in 2015 in one of the enterprises of the regional military-industrial sector. The methodological tools used in this study include such methods as the expert assessment, mathematical statistics and institutional analysis. The proposed methodology and empirical results have been used as a basis to develop the institutional spiral of knowledge generation during the performance of state order in the enterprises of the military-industrial sector, the implementation of which will help to reduce the level of uncertainty throughout the entire lifecycle of innovative product. The developed institutional spiral of knowledge generation in the instrument-making enterprises of the military-industrial sector involves the provision of incentives for knowledge generation at each stage of the product lifecycle. The results of this study can be used to build the diagram of knowledge generation and apply the procedures for increasing the efficiency of knowledge generation in the enterprises of the military-industrial sector
Effective microwave-assisted approach to 1,2,3-triazolobenzodiazepinones via tandem Ugi reaction/catalyst-free intramolecular azide–alkyne cycloaddition
A novel catalyst-free synthetic approach to 1,2,3-triazolobenzodiazepinones has been developed and optimized. The Ugi reaction of 2-azidobenzaldehyde, various amines, isocyanides, and acids followed by microwave-assisted intramolecular azide–alkyne cycloaddition (IAAC) gave a series of target heterocyclic compounds in moderate to excellent yields. Surprisingly, the normally required ruthenium-based catalysts were found to not affect the IAAC, only making isolation of the target compounds harder while the microwave-assisted catalyst-free conditions were effective for both terminal and non-terminal alkyne
Detection of IgG against Rickettsia typhi: a population-based study in southern Kazakhstan
Uvod. Rickettsia typhi svrstava se u skupinu pjegavih tifusa i uzrokuje endemski tifus. Slučajevi endemskog tifusa i seropozitivnosti na R. typhi zabilježeni su u susjednoj Kini i Rusiji. Međutim, o endemskom tifusu u Kazahstanu se malo zna. Svrha ove studije bila je procijeniti prevalenciju IgG protutijela na R. typhi u populaciji južne regije Kazahstana.
Metode. U istraživanje je uključeno ukupno 253 osoba (142 žena, 111 muškaraca) u dobi od 1 do 71 godine. Detekcija serumskih IgG protutijela na R. typhi provedena je imunoenzimskim ELISA testom.
Rezultati. Ukupna seropozitivnost na R. typhi iznosila je 34,4%. Najveća seroprevalencija od 91,8% zabilježena je u regiji Turkestan. Najniža seropozitivnost od 6,1% otkrivena je u selu Lepsinsk, regija Almaty. Seroprevalencija se nije značajno razlikovala prema spolu. Seropozitivnost kod odraslih pojedinaca nije bila značajno povezana s dobi, ali pozitivni rezultati nisu otkriveni u dobnoj skupini djece mlađe od 14 godina.
Zaključak. Dobiveni rezultati potvrđuju aktivnu cirkulaciju R. typhij u regijama Turkestan i Almaty u Kazahstanu. Podaci ukazuju na hitnu potrebu za daljnjim istraživanjima čiji je cilj procijeniti klinički učinak R. typhi u južnoj regiji Kazahstana.Background. Rickettsia typhi belongs to the typhus group of rickettsiae and causes endemic typhus. Cases of endemic typhus and seropositivity to R. typhi have been reported in the neighbouring China and Russia. However, little is known of the endemic typhus in Kazakhstan. The purpose of this study was to evaluate the prevalence of IgG antibodies to R. typhi in the population of southern region of Kazakhstan.
Methods. A total of 253 individuals (142 women, 111 men) aged from 1 to 71 years were recruited into the study. Detection of serum IgG antibodies against R. typhi was performed by enzyme-linked immunosorbent assay (ELISA).
Results. The overall R. typhi seropositivity has reached 34.4%. The highest seroprevalence of 91.8% was recorded in the Turkestan Region. The lowest seropositivity of 6.1% was detected in the village Lepsinsk, Almaty Region. The seroprevalence did not differ significantly between genders. Seropositivity in adult individuals was not significantly associated with age, but positive results were not detected in the age group of children under 14 years.
Conclusion. The obtained results confirm active circulation of R. typhi in the Turkestan and Almaty Regions of Kazakhstan. The data indicate an urgent need for further studies aimed to evaluate the clinical impact caused by R. typhi in the southern region of Kazakhstan
Mineralogical and geochemical analysis of Fe-phases in drill-cores from the Triassic Stuttgart Formation at Ketzin CO₂ storage site before CO₂ arrival
Reactive iron (Fe) oxides and sheet silicate-bound Fe in reservoir rocks may affect the subsurface storage of CO2 through several processes by changing the capacity to buffer the acidification by CO2 and the permeability of the reservoir rock: (1) the reduction of three-valent Fe in anoxic environments can lead to an increase in pH, (2) under sulphidic conditions, Fe may drive sulphur cycling and lead to the formation of pyrite, and (3) the leaching of Fe from sheet silicates may affect silicate diagenesis. In order to evaluate the importance of Fe-reduction on the CO2 reservoir, we analysed the Fe geochemistry in drill-cores from the Triassic Stuttgart Formation (Schilfsandstein) recovered from the monitoring well at the CO2 test injection site near Ketzin, Germany. The reservoir rock is a porous, poorly to moderately cohesive fluvial sandstone containing up to 2–4 wt% reactive Fe. Based on a sequential extraction, most Fe falls into the dithionite-extractable Fe-fraction and Fe bound to sheet silicates, whereby some Fe in the dithionite-extractable Fe-fraction may have been leached from illite and smectite. Illite and smectite were detected in core samples by X-ray diffraction and confirmed as the main Fe-containing mineral phases by X-ray absorption spectroscopy. Chlorite is also present, but likely does not contribute much to the high amount of Fe in the silicate-bound fraction. The organic carbon content of the reservoir rock is extremely low (<0.3 wt%), thus likely limiting microbial Fe-reduction or sulphate reduction despite relatively high concentrations of reactive Fe-mineral phases in the reservoir rock and sulphate in the reservoir fluid. Both processes could, however, be fuelled by organic matter that is mobilized by the flow of supercritical CO2 or introduced with the drilling fluid. Over long time periods, a potential way of liberating additional reactive Fe could occur through weathering of silicates due to acidification by CO2
Methodological problems of accounting received discounts
The article contains the already existing approaches to business and financial accounting of the discounts, acquired by the discount-receiver, analyzes their advantages and disadvantages from the perspective of their correspondence with the active legislation and economic content of the discounts operations. The article also covers the problem of the absence of patterns for accounting discounting operations which would altogether pass the standard ФЗ [FZ] “On accounting”, Accounting Regulations requirements, and interest of the concerned external users
Conservative nature of Architecture in the Historical City center of Saint Petersburg and its’ influence on the architectural development of the city: Bridges - how to bring together Architects and Local citizens
Saint Petersburg is a second-largest city in Russia, having a population over 6 million people. Located in the northern part of the country on the edge of the Baltic Sea it was founded by tsar Peter the Great in 1703 as a future capital for Russian Empire. Tsar was wishing the new capital to become the most beautiful city in Europe and the city was built with an intention to open up Russia towards western traditions and western European world. Today the first core of the city – its` historic part built through 18-19th centuries – is world known as Northern Venice and conquers the hearts of millions visitors. But through 300 years of its’ history the city turned from being one of the most progressive cities in Russia into the city with the prejudice to anything new. Today the city is trying to keep its’ “historical appearance”, to preserve how it looked like when it was envisioned by one of the greatest tsars in Russian History, but this intension is leading the historic city centre of Saint Petersburg to its` devastation.In this Research and Design project I was reflecting on how to approach the consvervativist thinking about applying contemporary architecture in historically important areas of the city. In my research I explored what are the origins of conservatism among the citizens of Saint Petersburg and the reasons behind historic centre of Saint Petersburg being captured in its` past. I aimed to understand how to re-interpret the gaps in the historic fabric of the city and how to use them to bridge the gaps in-between progressive intentions of the architects and conservative view of the citizens of Saint Petersburg. As a result of this research I was designing a small scale architecture university on the edge of the historic city centre, which main aim is to be as open to the public of Saint Petersburg as possible to invite people for inspiring observations, thoughtful discussions and unexpected discoveries about the approaches that are used in the realm of contemporary architecture today...Architecture, Urbanism and Building Sciences | Explorela
Institutional Analysis of Knowledge Generation Resource Potential at the Enterprises of Regional Military-Industrial Complex
The article is devoted to the processes of knowledge generation at the enterprises of military-industrial complex, which are the leaders of the regional innovative activity. The target of the research is to develop the methodology based on the use of resource application potential for increasing the efficiency of knowledge generation at the instrument-making enterprises of military-industrial complex. The system analysis of the knowledge generation processes is conducted at one of them. It allows to draw a conclusion that such enterprises have a lack of the institutes of knowledge generation processes. The authors are offered a technique of the development of the knowledge generation system at the military-industrial enterprises based on the accounting of assets and opportunities of the enterprise in the realization of intellectual activity. The developed technique is based on the determination of the horizontal resource potential of knowledge generation and allows to determine the potential of resource application at each stage of product life cycle. The comparison of the actual and theoretical values of horizontal resource potential allows to correct the distribution of a share of each of resources within a stage, and therefore, to optimize the realization of tasks at a specific stage. The offered tools were implemented in 2015 at one of the regional military-Industrial enterprises. The methodological tools of the research include the methods of expert assessment, mathematical statistics and the institutional analysis. On the basis of the offered technique and received empirical results, the institutional spiral of knowledge generation during the filling of state order at the military-industrial enterprise is developed. Its implementation will promote the decrease in the level of uncertainty during the whole life cycle of innovative activity product. The developed institutional spiral of knowledge generation at instrument-making military-industrial enterprises assumes the stimulation of knowledge generation processes at each of the stages of product life cycle. The results of this research can be used for the creation of the knowledge generation scheme as well as for the use of the efficiency increase mechanism of the knowledge generation processes at the enterprises of military-industrial complex
4-Methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic Acid. Peculiarities of Preparation, Structure, and Biological Properties
In order to determine the regularities of the structure–analgesic activity relationship, the peculiarities of obtaining, the spatial structure, and biological properties of 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid and some of its derivatives have been studied. Using nuclear magnetic resonance (NMR) spectroscopy and X-ray diffraction analysis, it has been proven that varying the reaction conditions using alkaline hydrolysis of methyl 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate makes it possible to successfully synthesize a monohydrate of the target acid, its sodium salt, or 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine. The derivatographic study of the thermal stability of 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid monohydrate has been carried out; based on this study, the optimal conditions completely eliminating the possibility of unwanted decomposition have been proposed for obtaining its anhydrous form. It has been shown that 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine is easily formed during the decarboxylation of not only 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid, but also its sodium salt, which is capable of losing СО2 both in rather soft conditions of boiling in an aqueous solution, and in more rigid conditions of dry heating. The NMR spectra of the compounds synthesized are given; their spatial structure is discussed. To study the biological properties of 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid and its sodium salt, the experimental model of inflammation caused by subplantar introduction of the carrageenan solution in one of the hind limbs of white rats was used. The anti-inflammatory activity and analgesic effect were assessed by the degree of edema reduction and the ability to affect the pain response compared to the animals of control groups. According to the results of the tests performed, it has been found that after intraperitoneal injection, the substances synthesized demonstrate a moderate anti-inflammatory action and simultaneously increase the pain threshold of the experimental animals very effectively, exceeding Lornoxicam and Diclofenac in a similar dose by their analgesic activity