Analysis and Research on Human Movement in Sports Scene

As a whole-body sport, skipping rope plays an increasingly important role in daily life. In rope-skipping education, due to the lack of professional teachers, the training efficiency of students is low. The rope-skipping monitoring device is heavy and expensive, and the cost of labor statistics and energy consumption are high. In order to quickly analyze the movement process of students and provide correct guidance, this article implements the movement analysis method of the human body movement process. The problem of limb posture analysis in rope skipping is transformed into a multilabel classification problem, a real-time human motion analysis method based on mobile vision is proposed, and the algorithm model is verified in the rope-skipping scene. The experimental results prove that this paper proposes the improved algorithm, which achieved the expected effect. In the analysis of rope-skipping action, the choice of hyperparameters during the experiment is introduced, and it is verified that the proposed ALSTM-LSTM can solve the problem of multilabel classification in the rope-skipping process. The accuracy rate reaches 95.1%, and it can provide the best in all indicators and good performance. It is of great significance for movement analysis and movement quality evaluation during exercise.

A new bionic hydraulic actuator system for legged robots with impact buffering, impact energy absorption, impact energy storage, and force burst

It is a big challenge for bionic legged robots to realize desired jumping heights and forward-running speeds, let alone achieve springbok-style jump-running. A key limitation is that there is no actuator system that can mimic the springbok’s muscle system to drive leg–foot system movements. In this paper, we analyze the movement process of springboks and summarize some key characteristics of actuator systems. Some key concepts are then identified based on these key characteristics. Next, we propose a new bionic hydraulic joint actuator system with impact buffering, impact energy absorption, impact energy storage, and force burst, which can be applied to various legged robots to achieve higher running speeds, higher jumping heights, longer endurance, heavier loads, and lighter mass.

Design of bamboo cutting mechanism based on crack propagation principle

Bamboo is mainly grown in hilly areas, and the harvesting of bamboo basically relies on labor. Moreover, the bamboo is prone to splitting problems during harvesting. To liberate labor and improve work efficiency, the crack propagation principle of bamboo was studied. Based on this study, a new cutting scheme using spiral feed was proposed. Additionally, a new bamboo cutting mechanism was designed. The new cutting mechanism, when installed on a harvesting vehicle, can automatically complete the cutting operation. The cutting mechanism is different from the traditional ones, and it uses four sets of saw blades for spiral feed cutting around the bamboo, which can reduce the splitting probability during the cutting process. Finally, a solid model of the cutting mechanism was built, and the basic movement process was simulated to verify the feasibility of the bamboo cutting mechanism.

MARKETING RESEARCH IN THE PIZZERIA MARKET

В настоящее время в России продолжает расти популярность пиццы. Авторами выделены лидеры российского рынка пиццерий, а также составлен рейтинг пиццерий на нижегородском рынке. Целью статьи выступает определение емкости рынка выбранного сегмента. Научная новизна статьи представлена результатами проведенного маркетингового исследования на рынке пиццерий в г. Н. Новгород. Рассмотрены причины развития маркетинговых исследований как практической области. Представлены источники получения информации для проведения маркетинговых исследований сферы питания в современном обществе. Выделены клиентские потоки применительно к специфике деятельности предприятий общественного питания сетевых форматов (постоянные и дискретные), а также его признаки (причина движения, однородность группы, регулярность движения, переход представителей клиентского потока в качественно иной статус, наличие процесса движения группы). The authors point out that marketing is a type of activity that develops changes and evolves with us. There is the essence of the concept of “marketing research” and the authors reveal the reasons for the development of marketing research as a practical area. The authors note that marketing research is a broader concept than market research, as it covers all the factors that affect, to one degree or another, the activities of an organization. There are sources of information for marketing research in the article. The catering sector in modern society is a rather popular type of service. Client flows are highlighted in relation to the specifics of the activities of public catering enterprises of network formats (permanent and discrete) The authors list the signs of the client flow (the reason for the movement, the homogeneity of the group, the regularity of the movement, the transition of the representatives of the client flow to a qualitatively different status, the presence of the group movement process). Currently, the popularity of pizza among Russians is increasing. In order to determine the state of the pizza market, the authors conducted a marketing research. The leaders of the Russian pizzeria market were identified, and a rating of pizzerias in the Nizhny Novgorod market was compiled. The purpose of this article is to determine the market capacity of the selected segment. The scientific novelty of the article comes down to the fact that the authors conducted a marketing research in the pizza market of Nizhny Novgorod.

Definition of the verb in the form of the imperative mood (imperative) - general information about the verb in Russian (Определение глагола в форме повелительного наклонения (императива) - общая сведения о глаголе на русском языке)

The article examines the definition of the verb in the form of the imperative mood (imperative) _ general information about the verb in Russian . A verb in Russian is one of the parts of speech that unify all parts of speech, expressing the meaning of action, movement, process in grammatical forms of time, type, mood, face and voice. The imperative mood is a grammatical feature of the verb expressed through several forms of the verb that urges someone to do things. In other words, imperative mood or (imperative) : - one of the single meaning of the form . The form of the imperative expresses a supplication, order, advice, etc. With the support of the imperative form, the communicator states his own desire , so that in this case another process should be carried out by someone else to fulfill the communicator desire. (go away!) , for example, Or, (Don't go away!). В статье обьяснится определение глагола в форме повелительного наклонения (императива) _ общая сведения о глаголе на русском языке . Глаголом на русском языке является один из частей речи , который объединяет все слова , выражающий значение действия , движения, процесса в грамматических формах времени , вида , наклонения , лица и залога . Повелительное наклонение - это грамматическая особенность глагола , которая выражается через несколько форм глагола , которое кто-то побуждает совершенить дела . И другими словами Повелительное наклонение или (императив ) : - одино с значений группы наклонения . Форма императива выражает мольбу, приказ , совет и т. д . Со поддержкой императива сообщающий информирует об собственном желании , для того чтобы в таком случае либо другое процесс существовало осуществлено кем-в таком случае (Уходи!) либо , напротив , никак не проделывалось (Никак Не уходи!) .

Geomorphic and sedimentary characteristics of ancient Dora Kamiyama rockslide in Tibet Plateau - implications of dynamic process and frictional heating

<p>The mechanisms of high-speed and long-runout landslides are mainly reflected in the geomorphological morphology and internal sedimentology of the deposits. The geomorphic and sedimentary characteristics of ancient Dora Kamiyama rockslide in Tibet Plateau was discussed based on field investigation and multidisciplinary tests. The landslide area is divided into three zones: the source area (I), the translation area (II), and the accumulation area (III). Geomorphic features include toreva block, the levee, the transverse ridge, the longitudinal ridge, the hummock and the ridge confined by troughs and the carapace composed of giant blocks were analysed,which are considered as indicators of the dynamic process of the landslide during transport. 3 stages of the rockslide dynamic motion were proposed, including extensional, compressional and radial motions, respectively. Sedimentary features of facies in the rockslide was revealed, including carapace facies, blocky facies, fragmented facies, shear zones, and basal mixed zones, the mineral change process of the rockslide during the movement process and the temperature change of the sliding surface can be obtained based on analyzing the minerals change near the shear zone. The temperature field of the landslide and its movement process can be reconstructed through the temperature change of the shear zone. The results show that frictional heating was generated during complex dynamics interactions. The friction temperature generated by sliding near the fragmented facies was about 870–1470 °C. Based on sedimentary evidence, the dynamic evolution of the rockslide in response to temperature changes were reconstructed based on frictional thermal analysis.</p>