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The paper presents certain aspects regarding the determination of the support of a sliding vector system resultant function of the resultant moment of the vector system. [ABSTRACT FROM AUTHOR]

In order to achieve alpine ski performance, the preparation of the young athletes (12-14 years) should be dominated by technical and tactical aims, whereby the task of improving basic techniques specific to different areas of competition emerges. The study aims at optimizing the technical and tactical training of skiers. The technique and tactics improvement in the early stages of the training leads, over time, to an increased efficiency and to much better results in the athletes' career. This paper aims at materializing the knowledge gained in theoretical and practical training in sports and is of particular interest both in the professional training of the author and as an analytical document for evaluating a group of child skiers at a certain point in its evolution. Another important matter refers to the individual awareness of the training process, in accordance with the training factors. One should always bear in mind the positive and negative aspects of personal work, continuously reporting the achievements to the team model, the specific sport Federation of specialists in the field and, last but not least, the national and international training programme. The starting point of this paper was the study of all research and published material in this domain. To sum up, the tactical and technical training model presented for the advanced skier stage demonstrates the tasks and stages to be pursued and also the activity programme as well as the methodology of achieving the given tasks. [ABSTRACT FROM AUTHOR]

In order to achieve alpine ski performance, the preparation of the young athletes (12-14 years) should be dominated by technical and tactical aims, whereby the task of improving basic techniques specific to different areas of competition emerges. The study aims at optimizing the technical and tactical training of skiers. The technique and tactics improvement in the early stages of the training leads, over time, to an increased efficiency and to much better results in the athletes' career. This paper aims at materializing the knowledge gained in theoretical and practical training in sports and is of particular interest both in the professional training of the author and as an analytical document for evaluating a group of child skiers at a certain point in its evolution. Another important matter refers to the individual awareness of the training process, in accordance with the training factors. One should always bear in mind the positive and negative aspects of personal work, continuously reporting the achievements to the team model, the specific sport Federation of specialists in the field and, last but not least, the national and international training programme. The starting point of this paper was the study of all research and published material in this domain. To sum up, the tactical and technical training model presented for the advanced skier stage demonstrates the tasks and stages to be pursued and also the activity programme as well as the methodology of achieving the given tasks. [ABSTRACT FROM AUTHOR]

Romania represents an important tourist destination in the region. However, tourist marketing has not changed in time, and it cannot compete with similar tourist offers existing on the international market. The Romanian tourist structures, especially those concerning entertaining activities, are old and unattractive. Tourist services and programs lack imagination, their quality is poor, while the quality-cost ratio is inconclusive. These are the reasons why the last 20 years have witnessed a constant decrease of the external tourist demand for Romania. Modernization, restructuring, creation of new competitive tourist products are necessary. The analysis of the mountain tourism potential, oriented towards winter sports, especially skiing, evidenced the necessity of developing projects of the extension and upgrading of skiing facilities, cable transportation installations; other winter sports such as cross country skiing, walking, bobsled, sledding, snowboard, are also in need for new facilities. For Romania to be acknowledged as an international tourist destination for winter sports, the general infrastructure must be improved: building new ski and snowboard slopes with modern cable transportation systems, artificial snow installations, nocturnal systems, along with the development of accommodation and catering facilities. Given the fact that tourist safety is a primary concern worldwide, both regarding the cable transportation and the ski slopes, international safety standards must be rigorously observed. This study will identify the domains for ski practicing, cable railways and ski lifts that will be declared fit for public use. [ABSTRACT FROM AUTHOR]

The extremely rapid evolution of portable technologies and children's receptiveness to constantly accessing the latest information creates the conditions for a number of new developments in most areas of activity. Moreover, their attraction to real-time visualisation of various events and competitions projects a certain level of perception and imitation of certain behaviours. Therefore, special attention should be paid to them from the earliest stages, i.e., from the time they are selected to play various sports. Also, the complementarity of some sports must be taken into account when it is desired to obtain positive results. Age group adaptation and the investigation of some of the parameters relevant to different age groups have generated values that can support positive outcomes in the long term and thus increase motivation to participate in sport at a competitive level. [ABSTRACT FROM AUTHOR]

The purpose of this study is to estimate the reliability features for linear hydraulic engines of handling the machines bucket for loading, transportation and storage used in performing underground and surface hydrotechnical works. The input data required for the study of reliability comes from machines user and characterizes the functionality of the elements for five machines for a period of four years. [ABSTRACT FROM AUTHOR]

The purpose of this study is to estimate the spare parts necessary, for a determined period of time of operation for a machine or installation, based on reliability studies performed on their components, which allows a proper sizing of the stock, with beneficial effects on ensuring the continuity of their operation, especially on the economic effects. [ABSTRACT FROM AUTHOR]