scholarly journals Digitalization of Cross-Country Skiing Training Based on Multisensor Combination

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xingxing Li ◽  
Lulu Song ◽  
Hao Wu
Keyword(s):  
Information Integration ◽  
Estimation Algorithm ◽  
Human Motion ◽  
Body Motion ◽  
Displacement Estimation ◽  
The Status ◽  
Posture Prediction ◽  
Cross Country Skiing ◽  
Cross Country

The status and role of science and technology in the field of modern competitive sports have become increasingly prominent. The construction of a scientific training command system is of great significance for improving the scientific level of the training process and deepening the digital cognition of ski training. This paper is based on the multisensor combination to conduct a digital research on cross-country skiing training, aiming to conduct in-depth research on the realization of human motion capture and the theory of motion inertial sensing. To build a scientific, formal, and malleable ski training program, the requirements for data acquisition, recording, and analysis are quite strict. For this, it is necessary to use scientific and reasonable tools combined with multiple algorithms to process information and data. During the experiment, accelerometers, gyroscopes, and magnetometers are selected as sensors to receive motion information, and recognition algorithms for identifying weightlessness, hybrid filtering algorithm, displacement estimation algorithm, and kinematic principles are adapted to process multisensor data using information integration technology. A human body motion model was established based on kinematic principles, and a cross-country skiing motion measurement program was designed. The experimental results show that, according to the combination of multisensing and video platform, the athlete’s posture prediction is adjusted, and the action on the track is more consistent, which can accelerate the athlete’s skiing speed and the size of the inclination angle to a large extent. It can affect the direction of the athlete’s borrowing force and the adjustment of gravity during the exercise. The tilt angle is expanded from 135° to 170°, and it can maintain good continuity during the exercise.

scholarly journals Performance and Participation in the ‘Vasaloppet’ Cross-Country Skiing Race during a Century

Sports ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 86 ◽  
Author(s):  
Nastja Romancuk ◽  
Pantelis T. Nikolaidis ◽  
Elias Villiger ◽  
Hamdi Chtourou ◽  
Thomas Rosemann ◽  
...  
Keyword(s):  
Gender Differences ◽  
Male Athletes ◽  
Small Magnitude ◽  
Public Health Policies ◽  
Race Time ◽  
Participation Of Women ◽  
Cross Country Skiing ◽  
The Mean ◽  
Cross Country

This study investigated gender differences in performance and participation and the role of nationality during one century in one of the largest cross-country (XC) skiing events in the world, the ‘Vasaloppet‘ in Sweden. The total number of female and male athletes who finished (n = 562,413) this race between 1922 and 2017 was considered. Most of the finishers were Swedish (81.03% of women and 88.39% of men), followed by Norwegians and Finnish. The overall men-to-women ratio was 17.5. A gender × nationality association was observed for participation (χ2 = 1,823.44, p < 0.001, φ = 0.057), with the men-to-women ratio ranging from 6.7 (USA) to 19.1 (Sweden). For both genders, the participation (%) of Swedish decreased, and that of all other nationalities (except Swiss) increased across years. Regarding the mean race time, men were faster than women by 14.5% (7 h 52 min 17 s versus 9 h 00 min 55 s, respectively). A trivial gender×nationality interaction regarding the race time was observed (p < 0.001, η2 < 0.001), with gender differences ranging from 4.4% (USA) to 22.0% (Iceland). The race time increased across calendar years for both women (r = 0.45, p = 0.006, moderate magnitude) and men (r = 0.25, p = 0.015, small magnitude). On the basis of these findings, we concluded that a relatively small number of women pariticipates in XC skiing. Therefore, the development of public health policies targeting the participation of women in XC skiing should be a concern in the countries with a tradition of this sport.

scholarly journals The Fall of the Queen of Nordic Skiing

2019 ◽  
Vol 40 (1) ◽  
pp. 121-138
Author(s):  
Ulrik Wagner ◽  
Elsa Kristiansen
Keyword(s):  
National Identity ◽  
Critical Discourse ◽  
Individual Responsibility ◽  
Analytical Research ◽  
Cross Country Skiing ◽  
Cross Country ◽  
Harsh Criticism ◽  
The Individual ◽  
Nordic Skiing

Abstract In 2016, Norwegian cross-country skier Therese Johaug made her positive doping test public. We compare how the Norwegian and Swedish media covered the ensuing scandal with the aim of discovering how constructions of subjectivity, national identity, anti-doping policy and the role of cross-country skiing are interrelated. Drawing on a critical discourse analytical research design, we identify significant differences: the Norwegian media hesitated to call it a doping scandal and occasionally portrayed Johaug as a victim, whereas the Swedish media provided a platform for harsh criticism of the Norwegian’s use of medicine and emphasised the individual responsibility of the athlete. Thus, this study elucidates how sport is mediated as part of a national rivalry between two Scandinavian countries that are both heavily engaged in cross-country skiing.

scholarly journals The Role of Nationality in Ultra-Endurance Sports: The Paradigm of Cross-Country Skiing and Long-Distance Running

2020 ◽  
Vol 17 (7) ◽  
pp. 2543
Author(s):  
Beat Knechtle ◽  
Thomas Rosemann ◽  
Pantelis Theo Nikolaidis
Keyword(s):  
Relevant Literature ◽  
Marathon Running ◽  
Endurance Running ◽  
Long Distance ◽  
Endurance Sports ◽  
Long Distance Running ◽  
Cross Country Skiing ◽  
Cross Country ◽  
Ultra Endurance

Although the variation of performance by nationality in endurance sports such as marathon has been well studied, little information exists so far on the role of nationality on performance in ultra-endurance sports. The aim of the present study was to review the role of nationality on cross-country skiing and ultra-endurance running. Scopus and PubMed were searched using the syntax “nationality AND (ultra-endurance OR ultra-marathon OR cross-country skiing) in 1/4/2020. This search identified 17 articles, whose references were further examined for relevant literature. It was observed that Russian athletes dominated ultra-endurance running and cross-country skiing races. It was shown that these races were in other countries, where it was assumed that only the best Russians competed. Potential explanations could be misuse of performance enhancing substances, historical, climate-geographical and psychophysiological (e.g., combination of genetic and social factors). In summary, recent studies found a dominance of Russian athletes in specific races (i.e., ‘Comrades Marathon’, ‘Vasaloppet’, and ‘Engadin Ski Marathon’) and disciplines (i.e., ultra-marathon running, cross-country skiing) over a period of several decades. Future studies are need to investigate other events and other sport disciplines to confirm this Russian dominance.

scholarly journals Capture of 3D Human Motion Pose in Virtual Reality Based on Video Recognition

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Qiang Fu ◽  
Xingui Zhang ◽  
Jinxiu Xu ◽  
Haimin Zhang
Keyword(s):  
Virtual Reality ◽  
Fuzzy Logic ◽  
Human Body ◽  
Estimation Algorithm ◽  
Human Motion ◽  
Body Motion ◽  
Classification Model ◽  
Accuracy Rate ◽  
Motion State ◽  
Adaptive Adjustment

Motion pose capture technology can effectively solve the problem of difficulty in defining character motion in the process of 3D animation production and greatly reduce the workload of character motion control, thereby improving the efficiency of animation development and the fidelity of character motion. Motion gesture capture technology is widely used in virtual reality systems, virtual training grounds, and real-time tracking of the motion trajectories of general objects. This paper proposes an attitude estimation algorithm adapted to be embedded. The previous centralized Kalman filter is divided into two-step Kalman filtering. According to the different characteristics of the sensors, they are processed separately to isolate the cross-influence between sensors. An adaptive adjustment method based on fuzzy logic is proposed. The acceleration, angular velocity, and geomagnetic field strength of the environment are used as the input of fuzzy logic to judge the motion state of the carrier and then adjust the covariance matrix of the filter. The adaptive adjustment of the sensor is converted to the recognition of the motion state. For the study of human motion posture capture, this paper designs a verification experiment based on the existing robotic arm in the laboratory. The experiment shows that the studied motion posture capture method has better performance. The human body motion gesture is designed for capturing experiments, and the capture results show that the obtained pose angle information can better restore the human body motion. A visual model of human motion posture capture was established, and after comparing and analyzing with the real situation, it was found that the simulation approach reproduced the motion process of human motion well. For the research of human motion recognition, this paper designs a two-classification model and human daily behaviors for experiments. Experiments show that the accuracy of the two-category human motion gesture capture and recognition has achieved good results. The experimental effect of SVC on the recognition of two classifications is excellent. In the case of using all optimization algorithms, the accuracy rate is higher than 90%, and the final recognition accuracy rate is also higher than 90%. In terms of recognition time, the time required for human motion gesture capture and recognition is less than 2 s.

scholarly journals The Role of Upper Body Power in Classical Cross-Country Skiing Performance

2006 ◽  
Vol 38 (Supplement) ◽  
pp. S238
Author(s):  
Nathan G. Alsobrook ◽  
Janelle L. Lore ◽  
Daniel P. Heil
Keyword(s):  
Upper Body ◽  
Cross Country Skiing ◽  
Cross Country ◽  
Upper Body Power ◽  
Classical Cross

The Role of Cultural Attributes in Inequality and Poverty

2010 ◽  
Author(s):  
Miki Malul ◽  
Amir Shoham ◽  
Leon Zolotoy
Keyword(s):  
Income Distribution ◽  
Gini Index ◽  
Cultural Dimensions ◽  
Cultural Variables ◽  
The Status ◽  
Cross Country ◽  
Status Of Women

This article uses cross-country data to explore the role of cultural attributes in the inequality of income distribution and poverty within countries. Using the Hofstede cultural dimensions, we found that individualism is negatively correlated with the Gini index and the poverty ratio. We also found that the lower the status of women in a society, the higher the level of poverty in that society. Furthermore, we found that adding the cultural variables into the analysis significantly improves the ability to explain the differences in inequality and poverty in different countries.

The study of interfacial reactions of nickel thin films on GaAs

1983 ◽  
Vol 41 ◽  
pp. 156-157
Author(s):  
L.J. Chen ◽  
Y.F. Hsieh
Keyword(s):  
Thin Films ◽  
Integrated Circuits ◽  
Interfacial Reactions ◽  
Metal Contacts ◽  
Nickel Thin Films ◽  
Thin Foils ◽  
The Status ◽  
Si Doped ◽  
Electron Microscopes

One measure of the maturity of a device technology is the ease and reliability of applying contact metallurgy. Compared to metal contact of silicon, the status of GaAs metallization is still at its primitive stage. With the advent of GaAs MESFET and integrated circuits, very stringent requirements were placed on their metal contacts. During the past few years, extensive researches have been conducted in the area of Au-Ge-Ni in order to lower contact resistances and improve uniformity. In this paper, we report the results of TEM study of interfacial reactions between Ni and GaAs as part of the attempt to understand the role of nickel in Au-Ge-Ni contact of GaAs.N-type, Si-doped, (001) oriented GaAs wafers, 15 mil in thickness, were grown by gradient-freeze method. Nickel thin films, 300Å in thickness, were e-gun deposited on GaAs wafers. The samples were then annealed in dry N2 in a 3-zone diffusion furnace at temperatures 200°C - 600°C for 5-180 minutes. Thin foils for TEM examinations were prepared by chemical polishing from the GaA.s side. TEM investigations were performed with JE0L- 100B and JE0L-200CX electron microscopes.

Strategic Role of Zakat in Multidimensional Quality of Life in Sijunjung, Indonesia

2018 ◽  
Vol 15 (1) ◽  
pp. 55-72
Author(s):  
Herlin Hamimi ◽  
Abdul Ghafar Ismail ◽  
Muhammad Hasbi Zaenal
Keyword(s):  
Quality Of Life ◽  
Positive Impact ◽  
Wealth Distribution ◽  
Absolute Poverty ◽  
Before And After ◽  
The Status ◽  
Being There ◽  
The Impact

Zakat is one of the five pillars of Islam which has a function of faith, social and economic functions. Muslims who can pay zakat are required to give at least 2.5 per cent of their wealth. The problem of poverty prevalent in disadvantaged regions because of the difficulty of access to information and communication led to a gap that is so high in wealth and resources. The instrument of zakat provides a paradigm in the achievement of equitable wealth distribution and healthy circulation. Zakat potentially offers a better life and improves the quality of human being. There is a human quality improvement not only in economic terms but also in spiritual terms such as improving religiousity. This study aims to examine the role of zakat to alleviate humanitarian issues in disadvantaged regions such as Sijunjung, one of zakat beneficiaries and impoverished areas in Indonesia. The researcher attempted a Cibest method to capture the impact of zakat beneficiaries before and after becoming a member of Zakat Community Development (ZCD) Program in material and spiritual value. The overall analysis shows that zakat has a positive impact on disadvantaged regions development and enhance the quality of life of the community. There is an improvement in the average of mustahik household incomes after becoming a member of ZCD Program. Cibest model demonstrates that material, spiritual, and absolute poverty index decreased by 10, 5, and 6 per cent. Meanwhile, the welfare index is increased by 21 per cent. These findings have significant implications for developing the quality of life in disadvantaged regions in Sijunjung. Therefore, zakat is one of the instruments to change the status of disadvantaged areas to be equivalent to other areas.

The Kenya National Commission on Human Rights under the 2010 Constitutional Dispensation

2018 ◽  
Vol 26 (2) ◽  
pp. 205-226
Author(s):  
Bonolo Ramadi Dinokopila ◽  
Rhoda Igweta Murangiri
Keyword(s):  
Human Rights ◽  
Transitional Justice ◽  
National Commission ◽  
Bill Of Rights ◽  
Institutional Perspective ◽  
Post Conflict ◽  
National Human ◽  
The Status ◽  
Protection Of Human Rights

This article examines the transformation of the Kenya National Commission on Human Rights (KNCHR) and discusses the implications of such transformation on the promotion and protection of human rights in Kenya. The article is an exposition of the powers of the Commission and their importance to the realisation of the Bill of Rights under the 2010 Kenyan Constitution. This is done from a normative and institutional perspective with particular emphasis on the extent to which the UN Principles Relating to the Status of National Institutions for the promotion and protection of human rights (the Paris Principles, 1993) have been complied with. The article highlights the role of national human rights commissions in transformative and/or transitional justice in post-conflict Kenya. It also explores the possible complementary relationship(s) between the KNCHR and other Article 59 Commissions for the better enforcement of the bill of rights.

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