scholarly journals Structure and content of direct preparation of elite athletes for the main competitions

2018 ◽  
pp. 17-41
Author(s):  
Vladimir Platonov
Keyword(s):  
High Performance ◽  
Elite Athletes ◽  
Integrative Approach ◽  
Historical Method ◽  
Western Model ◽  
Wide Range ◽  
Logical Method ◽  
Preparation Phase ◽  
Direct Preparation ◽  
High Level

Objective. To carry out a comprehensive analysis of the schemes of direct preparation of top-level athletes for the main competitions of the year or macrocycle focused on achieving the state of the highest readiness for the start. Methods. Study and analysis of scientific literature and practice of elite athletes training for the main competitions, instrumental methods for studying the energy systems capacities, psychomotor capabilities, testing of specific working capacity, historical method, logical method, expert survey, and system integrative approach. Results. Comparative analysis was performed of alternative models of preparation during the time immediately preceding the main competitions of the year or macrocycle. The short-term (2–3 week long) Western model of tapering is aimed at ensuring a full recovery after the previous loads, technical and tactical and psychological adjustment to the start. The Eastern European model, which is longer in duration (of up to 8 weeks), has a much broader focus. It is shown that the latter model make possible to address a wide range of tasks related to ensuring a high level of general and specialized preparation, the formation of a natural training eff ect as a response to the previous loads with achieving a peak of functional preparation at the time of main competitions and the highest readiness at the moment of specific events. The content of the concepts of ‘tapering’ and ‘direct preparation’ is subjected to analysis, detailed information is presented on the structure of two different schemes of tapering within direct preparation phase: the one of 5 weeks in duration with two mesocycles and the other 8 week-long with three mesocycles. Their principal advantage over the widespread 2-3-week tapering models is shown. Keywords: high performance sport, the phase of direct preparation, tapering phase, the peak of functional preparedness, the highest readiness for starts, pre-start preparation.

A Family of Surface Velocity Distributions for Axial Compressor Blading and Their Theoretical Performance

1976 ◽  
Vol 98 (2) ◽  
pp. 229-238 ◽  
Author(s):  
G. J. Walker
Keyword(s):  
High Performance ◽  
Axial Compressor ◽  
Compressor Blade ◽  
Surface Velocity ◽  
Design Parameters ◽  
Suction Surface ◽  
Wide Range ◽  
Using Data ◽  
High Level ◽  
Theoretical Performance

The influence of free stream disturbances on transition is discussed and it is noted that significant regions of laminar flow may exist on axial turbomachine blades despite the high level of disturbance to which they are subjected. A family of surface velocity distributions giving unseparated flow on the suction surface of an axial compressor blade is derived using data from detailed boundary layer measurements on the blading of a single-stage machine. The distributions are broadly similar to those adopted by Wortmann in designing high performance isolated aerofoil sections for operation at much higher Reynolds numbers. The theoretical performance of blades having the specified surface velocity distributions is computed for a wide range of conditions, and the effects of varying Reynolds number and other design parameters are analyzed. The results suggest the possibility of obtaining useful improvements in performance over that of conventional compressor blade sections. The computed performance values show an almost unique relation between the blade losses and the suction surface diffusion ratio. However the correlation of losses with the equivalent diffusion ratio is found to break down at high values of the latter parameter.

Extremely Light Weight Rheocast Components for Automotive Space Frame

2012 ◽  
Vol 192-193 ◽  
pp. 545-550 ◽  
Author(s):  
Mario Rosso ◽  
Ildiko Peter ◽  
Gianluigi Chiarmetta ◽  
Ivano Gattelli
Keyword(s):  
High Performance ◽  
Mechanical Tests ◽  
Standard Samples ◽  
Fe Content ◽  
Wide Range ◽  
Automotive Parts ◽  
Fracture Surface Analysis ◽  
High Level ◽  
Non Destructive ◽  
Very High

This paper presents an analysis of a new rheocasting process suitable for the manufacturing of high performance automotive parts. The process is able for the realization of components using Al alloys. An important aspect is related to the possibility to obtain quite wide range of thicknesses, starting from 2.5 mm. The used alloy is the well known A356, with low Fe content, maximum 0.08 wt%. T6 heat treatments has been performed, while the soundness of the parts has been certified by non destructive tests. These parts are produced to be mounted on a top level and famous sport car. Non standard samples for mechanical tests have been machined directly from the components. Following the mechanical tests fracture surface analysis has been carried out by SEM to observe some morphological details and to evaluate the influence of the process and of the alloy conditions on the fracture behaviour. On the polished transverse sections of the samples morphological analysis has been performed. The obtained results shown high level of mechanical strength for all series of components. The reliability of the process is very high at a convenient level of manufacturing rate. The weldability of the parts has been demonstrated.

scholarly journals The life of high-level athletes: The challenge of high performance against the time constraint

2016 ◽  
Vol 53 (2) ◽  
pp. 234-249 ◽  
Author(s):  
Fabrice Burlot ◽  
Rémi Richard ◽  
Helene Joncheray
Keyword(s):  
High Performance ◽  
Elite Athletes ◽  
Time Constraint ◽  
Sport Expertise ◽  
Pace Of Life ◽  
And Performance ◽  
High Level ◽  
State Of Tension ◽  
Sporting Performance

The conditions for high performance have changed considerably over the last few years. Athletes must spend more time training and competing, devote a lot of time to mental, physical and nutritional professionals and continue to respond to some constraints such as studying, spending time with their families, friends and quality of life. In this context and based on the work of Rosa, we wonder about the capacity of elite athletes to combine all these constraints, namely to manage the acceleration in their pace of life, in order to be able to achieve always more and better in the same time unit. To address this issue, we interviewed 42 French high-level athletes who train at the National Institute of Sport, Expertise and Performance (INSEP). Results show that to suit their goals, athletes implement arrangement and adjustment strategies aimed at making the time they have wholly useful and efficient. This time constraint puts athletes in a perpetual state of tension, on the verge of a good or poor life. The paper shows how the question of time, and particularly the acceleration of pace of life, is vital for modern sporting performance.

scholarly journals An Investigation on Phenolic and Antioxidant Capacity of Under-utilized Food Legumes Consumed in China

Foods ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 438
Author(s):  
Yaqian Zhang ◽  
Maninder Meenu ◽  
Hansong Yu ◽  
Baojun Xu
Keyword(s):  
Antioxidant Capacity ◽  
High Performance ◽  
Total Phenolic ◽  
Velvet Bean ◽  
Local Society ◽  
Food Legumes ◽  
Wide Range ◽  
Major Producer ◽  
Phytochemical Profile ◽  
High Level

China is a major producer of various kinds of food legumes. Some of the under-utilized food legumes are consumed by the local society from different areas in China. The antioxidant capacity and phytochemical profile of these under-utilized food legumes haven’t been investigated until now. In this study, colorimetric and high-performance liquid chromatography was employed to explore the antioxidant capacity and phytochemical profile of 21 under-utilized food legumes. Different legumes under investigation exhibit a wide range of variations in their total phenolic content (TPC), total flavonoids content (TFC) and condensed tannins content (CTC). Among all the legume samples, the velvet bean from Hechi, Guangxi exhibited the highest antioxidant capacity while the white flat bean from Shangrao, Shanxi presented the least antioxidant capacity. Gallic acid was observed to be a major phenolic acid and its content in the velvet bean was significantly higher compared to the other legume samples explored in this study. The composition of flavonoids was different among all the legumes. Kaempferol was observed to be the most predominant flavonoid. The findings of this study will be beneficial for plant breeders, food scientists and consumers for the better selection of germplasm with a high level of phytochemicals that in turn possess maximum health benefits.

scholarly journals From Physics Model to Results: An Optimizing Framework for Cross-Architecture Code Generation

2013 ◽  
Vol 21 (1-2) ◽  
pp. 1-16 ◽  
Author(s):  
Marek Blazewicz ◽  
Ian Hinder ◽  
David M. Koppelman ◽  
Steven R. Brandt ◽  
Milosz Ciznicki ◽  
...  
Keyword(s):  
Code Generation ◽  
High Performance ◽  
Large Scale ◽  
Einstein Equations ◽  
Efficient Manner ◽  
Code Transformations ◽  
Wide Range ◽  
Problem Description ◽  
Physics Model ◽  
High Level

Starting from a high-level problem description in terms of partial differential equations using abstract tensor notation, theChemoraframework discretizes, optimizes, and generates complete high performance codes for a wide range of compute architectures. Chemora extends the capabilities of Cactus, facilitating the usage of large-scale CPU/GPU systems in an efficient manner for complex applications, without low-level code tuning. Chemora achieves parallelism through MPI and multi-threading, combining OpenMP and CUDA. Optimizations include high-level code transformations, efficient loop traversal strategies, dynamically selected data and instruction cache usage strategies, and JIT compilation of GPU code tailored to the problem characteristics. The discretization is based on higher-order finite differences on multi-block domains. Chemora's capabilities are demonstrated by simulations of black hole collisions. This problem provides an acid test of the framework, as the Einstein equations contain hundreds of variables and thousands of terms.

scholarly journals High Anti-Corruption Court of Ukraine: the peculiarities of establishment and the first results

2020 ◽  
Vol 9 (29) ◽  
pp. 170-178
Author(s):  
Oleksii Drozd ◽  
Yaroslav Nykytiuk ◽  
Liliia Dorofeieva ◽  
Olha Andriiko ◽  
Serhii Sabluk
Keyword(s):  
Comparative Method ◽  
Synthesis Method ◽  
Structural Method ◽  
Systematic Analysis ◽  
Holistic View ◽  
Historical Method ◽  
Analysis And Synthesis ◽  
Logical Method ◽  
First Results ◽  
High Level

The purpose of the article is to analyze the peculiarities of establishment of the High Anti-Corruption Court of Ukraine (HACC) and to consider the first results of its work. Methodology. Thus, the analysis and synthesis method as well as the logical method were used to formulate a holistic view on corruption and its features, as well as the ways, in which it can be manifested. The logical-semantic method was used to establish the meaning of the term “corruption”. The historical method was useful in studying the history of the establishment of the HACC. The comparative method was used when analyzing Ukrainian legal acts, which regulate the issue under consideration, as well as scientific views on the topic. The system and structural method was applied to determine the institutional features of the HACC. The method of systematic analysis made it possible to identify the operational characteristics of this agency. The legal modeling method was helpful in drawing conclusions of the research. The results of the study. The high level of corruption of Ukraine has led to the need to find the ways to counteract it. To that end, the system of bodies of pre-trial investigation and prosecution of high-ranking officials for corruption offenses has been created over the last three years. The establishment of the HACC was the final stage of this reform. Practical implications. Since the international experience in establishing anti-corruption courts is quite controversial, it was found that many scholars are skeptical about the ability of the HACC to reduce corruption in Ukraine. So, the list of arguments for and against the operation of HACC in Ukraine was comprehensively reviewed. Value / originality. As a result of the research, the authors identified both the shortcomings and the benefits of the work of Ukrainian anti-corruption court.

scholarly journals [ANT]: A Machine Learning Approach for Building Performance Simulation: Methods and Development

2019 ◽  
Vol 3 (1) ◽  
pp. 205
Author(s):  
Mahmoud M. Abdelrahman ◽  
Ahmed Mohamed Yousef Toutou
Keyword(s):  
Machine Learning ◽  
High Performance ◽  
General Purpose ◽  
Ease Of Use ◽  
Building Performance ◽  
Performance Simulation ◽  
Building Performance Simulation ◽  
Wide Range ◽  
Performance Development ◽  
High Level

In this paper, we represent an approach for combining machine learning (ML) techniques with building performance simulation by introducing four methods in which ML could be effectively involved in this field i.e. Classification, Regression, Clustering and Model selection . Rhino-3d-Grasshopper SDK was used to develop a new plugin for involving machine learning in design process using Python programming language and making use of scikit-learn module, that is, a python module which provides a general purpose high level language to nonspecialist user by integration of wide range supervised and unsupervised learning algorithms with high performance, ease of use and well documented features. ANT plugin provides a method to make use of these modules inside Rhino\Grasshopper to be handy to designers. This tool is open source and is released under BSD simplified license. This approach represents promising results regarding making use of data in automating building performance development and could be widely applied. Future studies include providing parallel computation facility using PyOpenCL module as well as computer vision integration using scikit-image.

MEMS Inertial Technology for Aerospace Applications

2006 ◽  
Author(s):  
Eric J. Lautenschlager
Keyword(s):  
High Performance ◽  
Performance Metrics ◽  
Aerospace Industry ◽  
The United States ◽  
Future Goals ◽  
Aerospace Applications ◽  
Wide Range ◽  
Error Terms ◽  
High Level ◽  
And Control

The aerospace industry has guidance, navigation, and control needs which make use of a number of inertial technology systems. MEMS based solutions can offer several advantages over conventional technologies and are being developed for a wide range of applications. This paper will review the broad inertial applications that exist for the aerospace industry, identify some of the current non-MEMS technologies used to meet those needs, and then discuss what advantages MEMS based solutions can provide. This will be followed by a high level explanation of the general operating principles of a MEMS gyroscope, as well as identification of key performance metrics and error terms that are used for sensor evaluation. Finally, there will be a discussion of some basic design considerations, a review of the current state of the art for performance, and future goals and directions for inertial MEMS technologies. NOTICE: High performance inertial technology is subject to restrictions imposed by the International Traffic in Arms Regulations (ITARS), and Export Administration Regulations (EAR). The use of these technologies, or information pertaining to these technologies, may be restricted from foreign nationals of the United States.

scholarly journals Disordered eating and eating disorders in male elite athletes: a scoping review

2020 ◽  
Vol 6 (1) ◽  
pp. e000801
Author(s):  
Yannis Karrer ◽  
Robin Halioua ◽  
Sonja Mötteli ◽  
Samuel Iff ◽  
Erich Seifritz ◽  
...  
Keyword(s):  
Eating Disorders ◽  
Disordered Eating ◽  
Scoping Review ◽  
Elite Athletes ◽  
Adolescent Male ◽  
Wide Range ◽  
High Prevalence ◽  
Sport Type ◽  
High Level

BackgroundEating disorders (ED) and disordered eating (DE) among male elite athletes share some of the characteristics seen in female elite athletes and the population, but also exhibit some key differences.ObjectiveScoping review of ED and DE in male elite athletes.MethodsIn May 2020, a comprehensive systematic literature search was conducted for DE and ED in male elite athletes.ResultsWe identified 80 studies which included 47 uncontrolled, 14 controlled studies, one interventional trial and 18 reviews.DiscussionThere was a wide range of definitions of DE and a high level of heterogeneity regarding competitive level, age and sport type. In adult male elite athletes, ED prevalence rates up to 32.5% were found, higher than in the general population. Prevalence was not higher in young/adolescent male elite athletes. The most frequently associated factor was competing in weight-sensitive sports. Male elite athletes tended to exhibit less body dissatisfaction than controls and were not always associated with DE. There were no studies looking at the prognosis or reporting an evidence-based approach for the management of DE in male elite athletes.ConclusionExisting literature indicates high prevalence of DE and ED in male elite athletes, with a wide range of aetiopathogenesis. There is a need for longitudinal studies to characterise the pathology and long-term outcomes, as well as develop standardised tools for assessment and treatments.

scholarly journals High-Level Design Space and Flexibility Exploration for Adaptive, Energy-Efficient WCDMA Channel Estimation Architectures

2012 ◽  
Vol 2012 ◽  
pp. 1-20 ◽  
Author(s):  
Zoltán Endre Rákossy ◽  
Zheng Wang ◽  
Anupam Chattopadhyay
Keyword(s):  
Channel Estimation ◽  
Software Defined Radio ◽  
High Performance ◽  
Design Guidelines ◽  
Complexity Classes ◽  
Power Performance ◽  
Performance Constraints ◽  
Estimation Algorithms ◽  
Wide Range ◽  
High Level

Due to the fast changing wireless communication standards coupled with strict performance constraints, the demand for flexible yet high-performance architectures is increasing. To tackle the flexibility requirement, software-defined radio (SDR) is emerging as an obvious solution, where the underlying hardware implementation is tuned via software layers to the varied standards depending on power-performance and quality requirements leading to adaptable, cognitive radio. In this paper, we conduct a case study for representatives of two complexity classes of WCDMA channel estimation algorithms and explore the effect of flexibility on energy efficiency using different implementation options. Furthermore, we propose new design guidelines for both highly specialized architectures and highly flexible architectures using high-level synthesis, to enable the required performance and flexibility to support multiple applications. Our experiments with various design points show that the resulting architectures meet the performance constraints of WCDMA and a wide range of options are offered for tuning such architectures depending on power/performance/area constraints of SDR.

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