A Design of an Unmanned Electric Tractor Platform

The tractor is a vehicle often used in agriculture. It is mainly used to tow other unpowered agricultural machinery for farming, harvesting, and seeding. They consume a lot of fuel with emissions that often contain a large amount of toxic gases, which seriously jeopardize human health and the ecological environment. Therefore, the electrical tractor is bound to become a future trend. The objective of this study is to design and implement a lightweight, energy-saving, and less polluting electric tractor, which meets the requirements of existing smallholder farmers, equipped with unmanned technology and multi-functions to assist labor and to provide the potential for unmanned operation. We reduced the weight of the tractor body structure to 101 kg, and the bending rigidity and torsional rigidity reached 11,579 N/mm and 4923 Nm/deg, respectively. Two 7.5 kW induction motors driven by lithium batteries were applied, which allows at least 3.5 h of working time.

Joining Techniques Like Welding in Lightweight Material Structures

In order to take more stringent measures in fuel economy and achieve the determined performance targets, the automotive industry needs to reduce the weight of the vehicles it produces. For this reason, all automobile manufacturers have determined their own strategies. Some manufacturers use lighter aluminum, magnesium, and composite components in their cars. In this study, the joining techniques of lightweight materials such as welding and the processes of their industrial use have been examined. There is currently no single technology that can combine all metallic panels in a car body structure. However, it is known that various joining technologies are used together. With the potential to combine certain combinations of steel and aluminum, manufacturers and scientists continue to work to identify technologies with the highest potential for lightweight joining and put them into use in high-volume automobile production. Therefore, it is important to examine the weldability of light materials such as magnesium, titanium, and aluminum.

Human pose estimation based on parallel atrous convolution and body structure constraints

Human pose estimation is still a challenging task in computer vision, especially in the case of camera view transformation, joints occlusions and overlapping, the task will be of ever-increasing difficulty to achieve success. Most existing methods pass the input through a network, which typically consists of high-to-low resolution sub-networks that are connected in series. Still, during the up-sampling process, the spatial relationships and details might be lost. This paper designs a parallel atrous convolutional network with body structure constraints (PAC-BCNet) to address the problem. Among the mentioned techniques, the parallel atrous convolution (PAC) is constructed to deal with scale changes by connecting multiple different atrous convolution sub-networks in parallel. And it is used to extract features from different scales without reducing the resolution. Besides, the body structure constraints (BC), which enhance the correlation between each keypoint, are constructed to obtain better spatial relationships of the body by designing keypoints constraints sets and improving the loss function. In this work, a comparative experiment of the serial atrous convolution, the parallel atrous convolution, the ablation study with and without body structure constraints are conducted, which reasonably proves the effectiveness of the approach. The model is evaluated on two widely used human pose estimation benchmarks (MPII and LSP). The method achieves better performance on both datasets.

Total, longitudinal and transverse body sizes in men with psoriasis of different somatotypes

Using a constitutional approach to predict the onset of a disease can be key not only to solving the problem of late-stage lifestyle modification therapy but also to understanding the deep, seemingly incomprehensible links between organs and body structure. The aim of the study was to establish and analyze the differences in total, longitudinal and transverse body sizes between healthy and/or psoriatic men of different somatotypes depending on the severity of the disease. Anthropo-somatotypological examination was performed on Ukrainian men (aged 22 to 35 years) with psoriasis (n=100, including 32 with mild and 68 with severe). A clinical assessment of the severity and area of psoriatic lesions was performed using the PASI index. Anthropometric data of 82 practically healthy men of the same age group was taken from the data bank of the research center of National Pirogov Memorial Medical University, Vinnytsya. Statistical processing of the obtained results was performed in the license package “Statistica 5.5” using non-parametric evaluation methods. In patients with mild and severe psoriasis, men of mesomorphic and endo-mesomorphic somatotypes in comparison with healthy men of the corresponding somatotypes, higher values of almost all total (in the endo-mesomorphs with severe disease), transverse (except for shoulder width) and lateral body size (except endo-mesomorphs with severe disease) was found. In patients with psoriasis, men of endo-mesomorphic somatotype with a mild course of the disease found greater than in patients with a similar course men of mesomorphic somatotype, body weight, length and surface area, height of acromial and finger anthropometric points, and transverse middle thoracic diameters and anteroposterior middle thoracic diameter; and in patients with psoriasis men of endo-mesomorphic somatotype with a severe course of the disease – only greater values than in patients with a similar course of the disease men of mesomorphic somatotype, interspinous distance. When comparing the total, longitudinal and transverse dimensions of the body between men with psoriasis of the corresponding somatotypes, in representatives of the mesomorphic somatotype with a mild course of the disease found greater than with severe course, body length values and lower – posterior middle thoracic diameter. The revealed differences in total, longitudinal and transverse body sizes between healthy and/or patients with mild or severe psoriasis Ukrainian men of mesomorphic and endo-mesomorphic somatotypes provide an opportunity to increase the effectiveness of the use of body structure and size to identify risk groups psoriasis.

Multiple relationships between cognition-motor impairment and activity-based clinical outcome measures in 218 hemiplegic stroke patients

BACKGROUND: The World Health Organization has developed the International Classification of Functions, Disabilities, and Health (ICF) model providing a theoretical basis for physical therapy diagnosis and interventions related to health conditions. However, the multiple relationship between body structure/function and activity domain variables is unknown on the cognition, spasticity, trunk and lower extremity recovery of the sensorimotor function and activity. OBJECTIVE: Our study aimed to determine the relationship between body structure/functions and body activity domain variables in adults with stroke. METHODS: A total of 218 hemiplegic survivors (102 females, mean age 64.98±13.53) were recruited from the Chungdam Hospital Center for our retrospective study. We used Mini-Mental State Examination (MMSE), Fugl-Meyer Assessment for lower extremity (FMA-LE), Modified Ashworth Scale (MAS), Berg Balance Scale (BBS), Modified Barthel Index (MBI), and Trunk Impairment Scale (TIS) as clinical outcome measures. The Pearson correlation coefficient was used to determine the multiple relationships among the variables at P < 0.05. RESULTS: The correlations between body structure/function domain (MMSE, FMA-LE, MAS) and activity domain variables (BBS, MBI, and TIS) were significant, rending from pre -intervention r = –0.216 to 0.766 and post-intervention r = –0.213 to 0.776, P < 0.05, except for MMSE and MAS. CONCLUSIONS: Establishing a significant difference between body structure/functions and activity domain variables in our research implies important multiple relationships between cognitive function, lower extremity function, lower extremity spasticity, and balance, and performance of ADL and trunk control coordination after stroke.

Application of Toddler Biscuits which Meets Omega 3 and Omega 6 Standards

Biscuits are additional food for toddlers. Biscuits on the market are biscuits that contain trans fatty acids which are less safe for toddlers to consume. Because it is necessary to create biscuits that are safe for toddlers to consume by adding fish oil in their manufacture, then biscuits can be given to children who are malnourished. Applications for biscuits are 50 grams/day for children whose body weight is less than WHO standards, 40 grams/day for children whose body weight is less than WHO standards, and 30 grams/day for children whose body weight is according to WHO standards. Every week (for 8 weeks) a toddler’s body weight is measured, as well as observing motor, cognitive, language and social emotional development. Based on the initial weight of the child without the addition of biscuits, it is known 33.3% have a normal weight gain and 66.3% have a late weight gain. After biscuit administration, it was found that weight gain was in a better direction, with 87.4% having a normal weight according to their age and the remaining 13.6% still having late weight development, children whose initial weight was very less than WHO standards. Weight gain is greatly influenced by the number of biscuits given to toddlers. So anatomically, growth will occur in a child’s body structure that increases proportionately with age. A lack of initial body weight will hinder the rate of weight gain of the child, can directly inhibit the growth of the child, as a result the proportion of the body structure of the child is not following their age which in the end it will have implications for other developments. Growth that occurs will affect the development of gross motor and fine motor skills, cognitive, language, and social-emotional toddlers.

Simulation and Optimization of Body Structure of Electric Vehicles with Offset Collision

In recent years, as the rapid growth of the number of electric vehicles, people have more and more requirements on the safety performance of vehicles. However, compared with fuel vehicles, the structure of electric vehicles has its own particularity which makes the safety design of body structure more difficult. Thus, improving the passive safety of electric vehicles and protecting the passengers from injury in the collision to the greatest extent have become important issues for the automotive industry. This paper simulates the frontal offset impact simulation analysis of a certain type of SUV, and analyzes the safety performance of the vehicle from the perspective of member protection. The front side member structure and impact energy absorption which affect the passive safety of the whole vehicle are optimized and improved. The finite element model of the whole vehicle is rebuilt, and the frontal offset impact simulation test is carried out to verify the effectiveness of the optimization scheme.

Species of pandan (Pandanus sp) in Gorom Island, East Seram Regency

The purpose of this study was to determine the Species of Pandanus (Pandanus sp) in Gorom Island, East Seram Regency. The object used in this study was the external body structure of pandanus plants (pandanus sp) such as fruit, flowers, leaves, stems and roots. This research was conducted directly by direct survey in the field and observing the species of pandanus (Pandanus sp), this research includes observations on fruit, flowers, leaves, stems, and roots. Based on the results of the study found 6 species of pandan (Pandanus sp) that is : Pandan Duri, Pandan Mengkuwang, Pandan Kowang, Pandan Sepajam, Pandan Wangi dan Pandan Laut. Of these 6 species we can distinguish from the shape of the leaves, stem shapes, fruit shapes, and root shapes.

Increasing the operating depth of an autonomous underwater vehicle using an intelligent magnetic field

<p>Designing and manufacturing a suitable body is one of the most effective factors in increasing the efficiency of autonomous underwater vehicles (AUVs). In fact, increasing the propulsive power of an AUV by reducing the frictional drag on its body and incre asing its maneuverability will positively affect key parts of the AUV’s hardware and software such as control system, sensors, AUV vision, batteries and thrusters. On the other hand, a suitable body should have features such as lightness, underwater vehicl e’s balance, high mechanical strength, and enough space for equipment. Therefore, the design and manufacture of the body requires a lot of analysis in terms of body material, aerodynamic calculations, etc., increases the overall cost. This paper aims to re duce the stress in the body of a Polytetrafluoroethylene ( PTFE ) underwater robot and to increase its operating depth without changing the body’s structure by using fuzzy logic to intelligently controlling the magnetic force generated by the repulsion betwe en the coil and the cylindrical magnet, which saves energy, reduces battery consumption, and increases system performance. The results show that the robot performance depth increases by more than 50% without changing the robot body structure.</p>