scholarly journals Optimization of the dimensional parameters of the working body for compaction temporary sprinkler dams

2021 ◽  
Vol 264 ◽  
pp. 04075
Author(s):  
Maksud Кarimov ◽  
Zayniddin Sharipov ◽  
Taxir Usmanov

The article presents the results of research work to optimize the working dimensions of the sealing working bodies of the dammer. A ski-shaped sealing sheet and a cone roller are used as working elements to seal the outer and inner parts of the temporary sprinkler dam. The sealing sheet of the sliding working body compresses, thanks to the presence of the inclined cheek SH and eliminates the restoration of compacted soil with the EC section. When the sealing sheet moves along the surface of the dam slope, it is immersed under the action of its own weight or the pressure force of the additional loader (spring) by the value h1, the soil layer with the thickness h1 is pressed into the body of the dam. In this case, the nature of the impact of the compacting cheek of the face on the lump of soil depends on the value of the angle αl of its inclination to the horizon and the speed of movement. To seal the outer part of the dam, take a cone roller as a working body. To substantiate the parameters of the conical working body, conical working elements were manufactured with a change in the large diameter of the truncated cone and different sizes of sealing sheets. During operation, the roller rotates on its axis with sliding and has no torque on the shaft. To find out the effect of sliding on the value of the longitudinal movement of the compacted soil particles on the surface of the dam, the nature of the effect of the base of the conical part of the roller on them is graphically considered.

Author(s):  
Kumari Anshu ◽  
Loveleen Gaur ◽  
Arun Solanki

Chatbot has emerged as a significant resolution to the swiftly growing customer caredemands in recent times. Chatbot has emerged as one of the biggest technological disruption. Simply speaking, it is a software agent facilitating interaction between computers and humans in natural language. So basically, it is a simulated, intellectual dialogue agent functional in a range of consumer engagement circumstances. It is the easiest and simplest means enable interaction between the retailers and the customers. </p><p> • Purpose- Most of the research work done in this field is concerned with their technical aspects. The recent research on chatbot pay little attention to the impact it is creating on users’ experience. Through this work, author is making an effort to know the customer-oriented impact that the chatbot bear on the shoppers. The purpose of this study is to develop and empirically test a framework that identify the customer oriented attributes of chatbot and impact of these attributes on customers. </p><p> • Objectives- The study intends to bridge the gap between concepts and actual attributes and applications on the subject of Chatbot. The following research objectives can address the various aspects of Chatbot affecting the different characteristics of consumers shopping behaviors: a) Identify the various attributes of chatbot that bears an impression on consumer shopping behavior. b) Evaluate the impact of chatbot on consumer shopping behavior that leads to the development of chatbot usage and adoption among the customer. </p><p> • Design/Methodology/Approach – For the purpose of analysis, author has administered Factor analysis and Multiple regression using SPSS version 23 for identification of various attributes of Chatbot and knowing their impact on shoppers. A self-administered questionnaire from the review of literature is developed. Industry experts in the field of retailing and academician evaluate the questionnaire. Primary information from the respondents is gathered using this questionnaire. The questionnaire comprises of Likert scale on a scale of 1 to 5 where 1 stands for strongly disagree and 5 stands for strongly agree. Data is collected from 126 respondents, out of which 111 respondents were finally considered for study and analysis purpose. </p><p> • Findings – The empirical results show that the study identifies various attributes of chatbot like Trust, Usefulness, Satisfaction, Readiness to Use and Accessibility. It is also found that chatbot is really influencing the customers in providing them with shopping experience, which can be very helpful to the businesses for increasing the sales and creating repurchase intention among the customers. </p><p> • Originality/value – The recent research on chatbot pay little attention to the impact it is creating on customers who are actually interacting with it on regular basis. The research paper extends information for understanding and appreciating the customer oriented attributes of artificially intelligent Chatbot. In this regard, the author has developed a model framework and proposed the attributes identified. Through the work, author is also making an effort to test empirically the impact of the identified attributes on the shoppers.


Author(s):  
Yasmina Maizi ◽  
Ygal Bendavid

With the fast development of IoT technologies and the potential of real-time data gathering, allowing decision makers to take advantage of real-time visibility on their processes, the rise of Digital Twins (DT) has attracted several research interests. DT are among the highest technological trends for the near future and their evolution is expected to transform the face of several industries and applications and opens the door to a huge number of possibilities. However, DT concept application remains at a cradle stage and it is mainly restricted to the manufacturing sector. In fact, its true potential will be revealed in many other sectors. In this research paper, we aim to propose a DT prototype for instore daily operations management and test its impact on daily operations management performances. More specifically, for this specific research work, we focus the impact analysis of DT in the fitting rooms’ area.


2020 ◽  
Vol 17 (5) ◽  
pp. 598-610
Author(s):  
V. A. Nikolaev

Introduction. To solve the problem of accelerating the construction of roads, improving their quality, it is advisable to use a continuous action unit to form a underlying layer. The main working elements of this unit are buckets, which cut off the soil layer from below and side. At the same time, the bottom knife cuts off the ground layer from below, the right knife - on the side, and the console knife partially cuts the top layer of soil from below for the next bucket. In particular, the analysis of interaction with the ground of the bottom knife of the continuous action unit is of theoretical and practical interest. To do this, the lower knife is divided into elements and the interaction of these elements with the soil is analyzed. The consistent impact on the soil of many bottom knives, within the width of the grip of the unit, is replaced by the impact on the ground of one conventional bottom knife at a distance necessary for the development of one cubic meter of soil. The forces of interaction of the conventional bottom knife with the soil are called conditional forces.The method of research. The method of calculating energy costs when introducing the bottom knife into the ground is presented. In general, when introducing the bottom knife in the ground, there are energy costs: to separate the soil, to overcome the friction of the ground on the edge of the blade, to overcome the pressure of the ground on the face, to the rise of the ground, to the vertical acceleration of the ground by the phase, to overcome the friction of the ground on the face, to overcome the friction of the ground on the surface, to overcome the friction of the ground on the lower plane. The total energy costs of interacting with a one cubic metre soil are derived from the addition of private energy costs. The method of calculating the horizontal longitudinal force needed to move the bottom knife is given.Results. On the basis of the developed method, energy costs are calculated in the introduction of the lower knife: on the separation of the soil, on overcoming the friction of the ground on the edge of the blade, on overcoming the pressure of the ground on the face, on the rise of the ground, on the vertical acceleration of the ground face, on overcoming the friction of the ground on the fascia, to overcome the friction of the ground on the lower plane. Energy costs to overcome the friction of the ground on the surface of the bottom knife are zero, as the soil flies over it. The total energy costs of the bottom knife interact with the soil of one cubic meter. The horizontal long-lived force needed to move the bottom knife has been determined.Conclusion. As a result of the calculations: the energy needed to cut the ground with the bottom knives, about 5 kJ/cube m., horizontal longitudinal force needed to move the lower knife - 16 N. To determine the total energy costs of moving the boiler unit to remove the top layer of soil from the underlying layer of the road, you need to analyze the interaction with the soil of other elements of the bucket.


2020 ◽  
Vol 17 (4) ◽  
pp. 452-463
Author(s):  
V. A. Nikolayev ◽  
D. I. Troshin

Introduction. To solve the problem of accelerating the construction of roads, improving their quality, it is advisable to use a continuous action unit to form a underlying layer. The main working bodies of this unit are buckets, which cut off the soil layer from below and on the side. At the same time, the bottom knife cuts off the ground layer from below, the right knife on the side, and the console knife partially cuts the top layer of soil from below for the next bucket. In particular, the analysis of interaction with the soil of the right knife of the continuous action unit is of theoretical and practical interest. To do this, the right knife is divided into elements and analyzed the interaction of these elements with the ground. The consistent impact on the soil of many right knives, within the width of the grip of the unit, is replaced by the impact on the ground of one conventional right knife at a distance necessary for the development of one cubic meter of soil. The forces of interaction of the conventional right knife with the ground are called conditional forces.The method of research. The method for calculating the energy costs during punching the right knife into the ground is shown: on separating the formation of the ground from its body, on overcoming the ground friction on the edge of the blade, on overcoming the ground pressure on the edge of the blade, on accelerating the ground of the blade by means of the axle, on overcoming the ground friction on the shelf, to overcome the ground friction against the outside surface.The total energy costs of interacting with a soil of one cubic meter are derived from the addition of private energy costs. The method of calculating the horizontal longitudinal force needed to move the right knife is given.Results. On the basis of the methodology developed, energy costs are calculated when introducing the right knife into the ground: on separating the soil from its body, on overcoming the friction of the ground on the edge of the blade, on overcoming the pressure of the ground on the face of the blade, on the acceleration of the ground with a fascia blade, on overcoming the ground friction on the face. The total energy costs of the right knife interact with the soil of one cubic meter. The horizontal long-lived force needed to move the right knife has been determined.Conclusion. As a result of the calculations: the energy needed to cut the ground with the right knives, more than 71 J/cube. The horizontal longitudinal force needed to move the right knife is 730 N. To determine the total energy spent on cutting the ground by buckets of the unit to remove the top layer of soil from the underlying layer of the road, it is necessary to analyze the interaction with the soil of other elements of the bucket.


Work ◽  
2021 ◽  
pp. 1-14
Author(s):  
Oziely Daniela Armenta-Hernández ◽  
Aidé Aracely Maldonado-Macías ◽  
Yolanda Baez-Lopez ◽  
Arturo Realyvásquez-Vargas

BACKGROUND: This research work establishes the relationship between job strain and being overweight among Mexican managers. Recently in Mexico, there has been a sharp increase in work-related diseases and mental health disorders. Furthermore, evidence shows that Mexicans rank top among employees who suffer from stress, yet research on the impact of job strain on the phenomena of obesity and being overweight among such vulnerable job positions in the industrial field is scarce. METHODS: The sample included 170 overweight middle and senior managers from six companies in the Mexican Manufacturing Industry. Cedillo’s Spanish version of the Job Content Questionnaire by Karasek was used, and the Body Mass Index (BMI) was used to characterize an overweight condition. Structural Equations Modelling studied the relationships among variables. RESULTS: Even though, the model shows a power of explanation of 6%(R2 = 0.06), the variable showing the greatest direct effect on the overweight variable is social support, with 21%(p <  0.01, β= –0.21). Regarding the total effects, only two of the four variables studied contributed directly to the overweight variation: the social support variable and the job demand variable. CONCLUSIONS: The results of the model hold a relatively low explanatory power; however, they do show a relationship between the studied variables. Also, the importance of the supervisor and co-workers’ support should be considered when developing organizational strategies for the prevention of work stress and an overweight condition.


2018 ◽  
Vol 64 (No. 4) ◽  
pp. 195-201
Author(s):  
Savelii Kukharets ◽  
Gennadii Golub ◽  
Viktor Biletskii ◽  
Oleksandr Medvedskii

The work is devoted to the issue of improving the quality of cultivating of root-bearing soil layer and optimizing its agrotechnological properties. Improving the quality of cultivation is due to the application of soil cultivating tools equipped with disk-knife working bodies. They are provided theoretical and experimental study of the work of the disk-knife working body, and it is substantiated its rational parameters. The basis of the substantiation of the parameters of the cultivating tool is the original analytical model, which reflects the process of interaction of the working body with the soil. To study the performance of the process, on the basis of kinematic equations of motion of the individual points of the working bodies, it is developed the analytical model of the motion of the battery of the working bodies. On the basis of the provided analytical researches, they were determined geometrical parameters and developed experimental samples of the disk-knife working body. It was carried out a comparative test in the field of tools equipped with disk-knife working bodies and with standard spherical cut-off discs, which confirmed the effectiveness of the use of disk-knife working bodies. The use of disk-knife working bodies ensures: the burying of plant remains and fertilizers into the root-bearing soil layer, improving the quality of soil cultivation, preserving of its structure, reducing the traction resistance of the body.


Healthcare ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 72
Author(s):  
Che Wan Jasimah Bt Wan Mohamed Radzi ◽  
Hashem Salarzadeh Jenatabadi ◽  
Nadia Samsudin

Background: Pregnancy has become the main constituent for women to become overweight or obese during the postpartum phase. This could lead women to suffer from postpartum depression as well. Information technology (IT) has become more prevalent in the healthcare industry. It offers patients the opportunity to manage their health conditions via the use of several applications, one being the mHealth applications. Objective: The main purpose of this study is to experiment and understand the effects the mHealth applications (i.e., fitness and nutrition applications) have on the body mass index (BMI) and depression levels amongst postpartum women. Methods: Online questionnaires were sent to postpartum women within one year after their pregnancy, of which 819 completed questionnaires were returned. The frequency of the mHealth applications usage was categorized into daily, weekly, rarely and never streams. Therefore, the frequency of use of the mHealth applications for BMI and depression levels was analyzed based on the available statistical data. Descriptive statistics, ANOVA, and Dunnet tests were applied to analyze the experimental data. Results: Out of 819 respondents, 37.9% and 42.1% of them were overweight and obese, respectively. Almost 32.9% of the respondents were likely depressed, and 45.6% were at an increased risk. This study reports that only 23.4% and 28.6% of respondents never used the fitness and nutrition applications. The impact of the frequency of using the fitness applications on BMI and depression levels was obvious. This means that with the increased use of the fitness applications, there was also a significant effect in maintaining and decreasing the BMI and depression levels amongst Malaysians postpartum women. However, from the data of weekly and daily use of fitness applications, we found that the contribution toward the BMI and depression levels was high (p = 0.000). However, nutrition applications amongst the users were not significant within the main variables (p > 0.05). From the Dunnet test, the significance of using the fitness applications within the depression levels started from daily usage, whereas for BMI, it started from weekly usage. Conclusion: The efficiency of the fitness applications toward the BMI and depression levels has been proven in this research work. While nutrition applications did not affect the BMI and depression levels, some of the respondents were still categorized as weekly and daily users. Thus, the improvements in BMI and depression levels are associated with the types of mHealth app that had been used.


Author(s):  
Bogdan Litvinov ◽  
Mariia Bilova

Relevance of the research work is the analysis of the main features of 3D modeling for further implementation in e-commerce. Namely, the features ofcreating a human body 3D model with the ability to edit personal settings of individual parts of the body, as well as a basic set of clothes to provide amore realistic representation of the model. The features of the 3D model in general were considered in this article. The mathematical analysis of the 3Dgraphics rendering on the 2D monitor and the possibilities of control and editing of such models have been presented. The developed software productallows the user to create an anatomical three-dimensional model of the human body and then adjust it to his needs. The user can apply on createdmodel variety of settings, namely more than 15 different views, with a full package of changes. It is possible to change the size, color of hair,eyebrows, eyes, face, body, legs. Also, the user is able to select the levels of skeletal frame views and additionally can select different backgrounds toprovide a more realistic representation of the model in space. Additional functionality was implemented for more flexible configuration of the model’sface. The user can pre-determine points to select directions or sizes of different parts of the face using settings, displayed on the mouse or touchpadcontrol. After adjustments, the user is able to manage the clothes that he had saved in the shopping cart from the online store, from which he laterproceeded to the online fitting. After the fitting the user can test the creation of animations in 360 degrees of free movement. Finally, the user can go tothe store to pay for the items he left in the shopping cart. Developed software allows improving main metrics of the on-line stores, which has a positiveimpact on increasing the growth of earnings.


Author(s):  
I. Yu. Bagmut ◽  
I. L. Kolisnyk

Connection of work with scientific plans, topics. The work was performed in accordance with the research plan of the Kharkiv Medical Academy of Postgraduate Education of the Ministry of Health of Ukraine and is a fragment of research work of the Department of Clinical Pathophysiology, Topographic Anatomy and Operative Surgery "Pathophysiological mechanisms of radiotoxins on the body and principles of early diagnosis 2017–2021). SUMMARY. One of the important medical and biological problems is to elucidate the physiological and molecular mechanisms of the impact of harmful environmental factors on the body, including fluorine and its compounds, in particular sodium fluoride [1]. Solving this problem is of great theoretical and practical importance for understanding the intracellular defense mechanisms of the organism. Close attention to various aspects of the biological effects of fluoride on the body is due to the significant distribution of this halogen in nature. At physiological concentrations, it is necessary for normal growth and development of the organism, where it performs its specific metabolic function. Any changes in the external and internal environment are accompanied by changes in the function of the endocrine glands, which leads to certain changes in metabolism and energy. It is known that hormonal insufficiency is accompanied by a decrease in the body's resistance to various adverse factors, including physical, biological, chemical. Disturbance of hormone balance and functioning of endocrine organs and systems entails profound changes in metabolic processes and immunobiological reactivity of the organism, weakening of adaptive-protective mechanisms in support of homeostatic function [2,3]. It is important to study the effects of subchronic fluoride intake, which can in a relatively short time cause various intracellular and systemic disorders in the body.


Author(s):  
Igor B. Maksimov ◽  
Marina A. Fesenko ◽  
Vladimir I. Sinopalnikov ◽  
Aleksey N. Diashev

Introduction. In the modern world, the introduction of digital technologies in healthcare is one of the priorities of development, which opens up a wide range of opportunities from screening and monitoring to various health disorders. In 2020 we completed the work to evaluate the applied capabilities of contactless videoplethysmography based on the telemetric control system developed by us and patented using the DISITA software and hardware complex during pre-trip post-trip medical examinations in 19 drivers of passenger vehicles. The study aims to explore the possibilities of the data of variational heart rate monitoring using reflected video plethysmography in assessing drivers' performance in their work. We have identified the most sensitive and significant heart rate variability indicators that reflect the professional load's impact. Materials and methods. We carried out during the usual pre-trip examination, video plethysmography of the skin of the face of the subjects in parallel in conditions of both natural daylight and typical artificial lighting of medical and diagnostic rooms, at a distance of the recording WEB camera of the DISITA software and hardware complex from the face of the subject within 40-70 cm. Researchers examined the methodological recommendations developed by the Izmerov Research Institute of Occupational Health team and RT-Medicine JSC. Results. We use videoplethysmography to evaluate variational heart rate monitoring as a method for assessing functional states during mass pre-trip (pre-shift) and post-trip (post-shift) medical examinations. In this case, the heart rate estimated by palpation was identical to the heart rate obtained by videoplethysmography. The most sensitive parameters characterizing the impact of professional load on drivers were changes in the indicators of variational heart rate monitoring: SDNN, RMSSD, CV, TR, HF, LF, and the waves of vasomotion regulation. Conclusions. Videoplethysmography with an assessment of the data of variational heart rate monitoring can be used to predict the functional state (stability of the body) of drivers in the course of their professional activities.


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