Span Style Research Articles

Comparison of Various Configuration of Wireless Power Transfer System

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; -ms-layout-grid-mode: line; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">This article deals with mutual comparison of different resonant tank configurations of the wireless power transfer (WPT) systems. Tested compensation configurations are classified as series-series, series-parallel, parallel-series and parallel-parallel and all of them are operated with the input and output frequency converters and other supplementary electronics. As parameter we chose the transfer distance and load. The comparison is made according to changes in overall system efficiency and power delivered to the load along varying both the load and operational distance. All theoretical findings are experimentally verified and discussed in the conclusion section.</span>

Protection against the Effects of the Asynchronous Operation of Synchronous Motors Based on the Principle of Comparison of the Machine Power Factor

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-US">This paper deals with the possibility of using the principle of comparison of the operational power factor for evaluation of the asynchronous operation of synchronous motors. This way of definition of the asynchronous operation is possible to use for motors protection and other protective systems of drives with synchronous motors.</span>

Model Predictive Control for Offset-Free Reference Tracking

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; -ms-layout-grid-mode: line; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">The paper deals with the offset-free reference tracking problem of the Model Predictive Control (MPC). That problem is considered for a class of the constant or occasionally changed constant reference signals. Proposed solution arises from a simple subtraction of the ARX model <br /> of two consecutive time steps. The solution is adapted <br /> to a state-space form and it corresponds to usual predictive control design without increase of the design complexity. The construction of the prediction equations and pre­dictive controller structure is explained in the paper.</span>

On the Design of Smart Home System

<a name="_Hlk27050323"></a><span style="font-family: 'Times New Roman',serif; font-size: 10pt; -ms-layout-grid-mode: line; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">Smart Home (SH) technology, comprising smart devices in the home context. SH technology has demonstrated new and good contribution to increase safety and reliability, at the same time; it might have its own influence to change our living habit. Use of mobile phones is changing with the development of technology; it can be used for different purposes. With the help of a network, mobile phone can be used to implement the smart home by controlling the devices. The objectives of this paper are to implement a smart home by controlling electronic devices at home remotely and to get an alert on intrusion or movement around the restricted premises. The mobile phone is using the short message service (SMS) service available and the alerts are also received as an SMS mentioning the activity occurring around the premises.</span>

The Cause of Mechanical Vibration of Palasher Synchronous Motors and its Removal

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; -ms-layout-grid-mode: line; mso-fareast-font-family: 'MS Mincho'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">The paper describes the procedure and the result of the analysis of mechanical vibrations of mining machines at the Palasher mine in the Russian Federation. The cause of these vibrations was the change in the magnitude of the magnetic flux in the air gap. The simulations showed the possibility of eliminating these changes in magnetic flux by injecting suitable voltages into the stator windings. The implementation of this injection is further described by torque variable component feed-direct compensation. Finally, oscillography records are presented before and after injection.</span>

A Mathematical Model of Thermal Processes

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-US">The paper is focused on heating within the electric resistance furnaces. Muffle resistance furnaces were chosen as a subject of the examination. The first part of the paper is aimed to describe the examined object from technology and construction points of view. The issue of a mathematical model of the muffle furnace is explained in the next chapter. The main part of the paper is aimed to divide the furnace into the lumped thermal capacitances and to create the system of temperature differential equations of state that characterize the object.</span>

ANALYSIS OF SUPPORT SCHEMES AND THE POSSIBILITIES OF SETTLEMENT OF THE BALANCE OF ELECTRICITY GENERATED FROM RENEWABLE ENERGY SOURCES

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">Support for electricity produced from renewable energy sources is a key priority for the European Union due to reasons of security and diversification of energy supply, environmental protection, sustainable development, and because the use of electricity from renewable sources is an important part of the measures necessary to comply with the Kyoto Protocol. The article is also focused on several options settlement balance between the producer and supplier of electricity produced from renewable energy sources.</span>

COMPLEMENTARY EFFECTS OF LEGUME INTEGRATION AND FERTILIZER APPLICATION ON SOIL MOISTURE AND LONG-TERM CARBON STOCKS IN MAIZE SYSTEMS OF KABETE SUB-COUNTY, KENYA

<p><strong>Background.</strong> Despite their immense benefits to smallholder farmers, the complementary effects of combined fertilizer sources with integration of legumes on soil moisture, soil organic carbon content, carbon stocks and their long-term projections in maize systems of Kabete sub-County, Kenya has not been fully investigated. This study will thus develop and promote a site specific technological package that will enhance maize productivity, resilience and sustainability of the smallholder farming systems. <strong>Objective</strong>. To determine the complementary effects of legume integration and fertilizer application on soil moisture and soil carbon stocks, and carbon stock changes over a 20-year period in maize systems of Kabete sub-County, Kenya. <strong>Methodology.</strong> The experiment was conducted at Upper Kabete field Research Station of the University of Nairobi during the long (LRS) and short (SRS) rainy seasons of 2015/2016. The experimental design was a Randomized Complete Block Design with a split plot arrangement. The main plots were integration of dolichos into maize (Z<em>ea mays L.</em>) systems; (i) as an intercrop (dolichos - <em>Lablab purpureus </em>(L.)/maize) and (ii) in rotation (dolichos-maize), and (iii) sole maize (without dolichos integration). The sub plots were organic and inorganic fertilizers: (i) Farmyard Manure (FYM), (ii) Triple Superphosphate (TSP)+Urea, (iii) FYM+TSP+Urea and (iv) no fertilizer input (control). Soil samples were collected at the end of each cropping season from 0-20 cm depth for determination of; soil moisture (%), soil organic carbon (SOC) content (%), and SOC stocks (t C ha<sup>-1</sup>). The Rothamsted Carbon model (Roth-C) was used to estimate carbon stock changes over a 20-year period with 1990 as the base year. <strong>Results.</strong> Significantly (P ≤ 0.05) high levels of soil moisture (31 and 30.1%) and SOC (2.6 and 2.5%) were respectively obtained in maize/dolichos intercrop with application of FYM and FYM+TSP+Urea during the SRS. The same trend in soil moisture and SOC was observed in the LRS. Significantly (P ≤ 0.05) high SOC stocks (t C ha<sup>-1</sup>) were obtained in maize/dolichos intercrop with FYM (56.20 and 54.71) and TSP+FYM+Urea (54.84 and 52.91) application in the SRS and LRS, respectively.<span style="text-decoration: line-through;"> </span>Over a 20-year period, SOC stocks maintained a significant and steady increase and were higher in maize/dolichos intercrop with FYM and FYM+TSP+urea application. The same pattern was noted in dolichos-maize rotation and sole maize systems. <strong>Implications.</strong> Given the importance of SOC in the improvement of soil quality, incorporation of legumes into maize systems with application of FYM is thus a plausible technological package that could enhance soil fertility and consequently food and nutritional security among smallholder farmers, not only of Kabete sub-County but Kenya and other countries. <strong>Conclusion.</strong> Significant increases in soil moisture content, organic carbon and, carbon stocks and their projections over a 20-year period were evident in maize/dolichos intercrop with FYM and TSP+FYM+Urea application in both seasons.</p>

Potensi Minyak Jelantah Sebagai Biodiesel dan Pengaruh Katalis Serta Waktu Reaksi Terhadap Kualitas Biodiesel Melalui Proses Transesterifikasi

This study aimed to determine the effect of reaction time and catalyst variations on the quality of biodiesel according to SNI 7182: 2015 determine the best reaction time and catalyst variations on the yield parameters, water content, viscosity, density, flash point, and methyl ester levels of biodiesel produced. Based on the research, the results show that the quality of biodiesel obtained for each parameter meets the SNI 7182: 2015 quality standards except for water content parameters that still exceed the quality standard limits. The best quality of biodiesel is shown in the variation of the reaction time of 120 minutes with KOH catalyst with a yield of 77.95%, moisture content of 0.2673%, density of 0.8669 gr/ml, the viscosity of 5.15 CST, flash point 174°C and levels of methyl esters 98.42%. Biodiesel from used cooking oil can be applied as renewable energy that is more environmentally efficient.<h1 style="margin: 0cm; margin-bottom: .0001pt; text-indent: 0cm; mso-list: none; tab-stops: 36.0pt;"><span style="mso-bidi-font-size: 11.0pt; text-transform: none; font-weight: normal; mso-bidi-font-weight: bold; mso-bidi-font-style: italic;" lang="EN-US">This study aimed to determine the effect of reaction time and catalyst variations on the quality of biodiesel according to SNI 7182: 2015 determine the best reaction time and catalyst variations on the yield parameters, water content, viscosity, density, flash point, and methyl ester levels of biodiesel produced. Based on the research, the results show that the quality of biodiesel obtained for each parameter meets the SNI 7182: 2015 quality standards except for water content parameters that still exceed the quality standard limits. The best quality of biodiesel is shown in the variation of the reaction time of 120 minutes with KOH catalyst with a yield of 77.95%, moisture content of 0.2673%, density of 0.8669 gr/ml, the viscosity of 5.15 CST, flash point 174°C and levels of methyl esters 98.42%. Biodiesel from used cooking oil can be applied as renewable energy that is more environmentally efficient.</span></h1>

Conceptual Framework Based On Type-2 Fuzzy Logic Theory for Predicting Childhood Obesity Risk

Obesity is a critical public health concern affecting a wide range of people globally. The rise in obesity is limited to not only the wealthiest countries but also the poorest. Childhood obesity has grown exponentially in the last few years, and its progression is significant contribution to the increase in mortality rates. Childhood obesity is linked with a wide range of risk factors. These include individual and parental biological factors, sedentary behavior or decreased physical activity, and parent restriction. This paper focuses on reviewing the techniques of artificial intelligence (AI) utilized in the management of obesity in children. The paper will also propose a conceptual framework to use novel type-1 and type-2 fuzzy logic methods capable of predicting risks for developing childhood obesity. The proposed approach will address factors such as family characteristics, unhealthy food choices and lack of exercise, and others related to children and their home environment. The procedure will help in the prevention of childhood obesity, promote public health, and reduce treatment costs for a wide range of obesity-related conditions. The paper will also plan an examination of type-1 and type-2 fuzzy logic systems on approximately one thousand families in Saudi Arabia. The proposed methods can handle the encountered uncertainties to enhance modeling and promote the accuracy of predictions of the risk for childhood obesity. Type-1 and type-2 fuzzy logic systems can also encode extracted rules comprehensively to provide insight into the best childhood obesity prevention behaviors.

Influence of Strengthening the Training of Mathematical Innovative Thinking on the Cultivation of College Talents

<p style="text-align: justify;"><span style="font-family: "times new roman"; font-size: 16px;">After entering the 21st century, all aspects of society are in rapid development. People gradually realize that students' innovation ability is the focus of future competition. Therefore, it is particularly important to train excellent talents and strengthen innovative thinking training in modern mathematics education. This paper mainly studies the influence of strengthening the training of mathematical innovative thinking on the cultivation of college talents. This paper mainly relies on mind mapping tool to improve students' innovative thinking level in mathematics. By means of teaching practice and questionnaire survey, relevant data are obtained from the surveyed students, and various influences of strengthening mathematical innovative thinking training on college talents are analyzed. Research from the characteristic of mathematics teaching, aiming at strengthening the math creative thinking training of talents in colleges and universities, in order to improve the students' comprehensive ability, guide the formation of students' mathematics innovation thinking ability, for the purpose of the students' mathematical logic thinking combined with mind mapping of divergent, ultimately to cultivate more outstanding social talents as the goal, and applied to the mathematics teaching, change the traditional teaching of the single, boring and rigid teaching methods, inspire students' enthusiasm in learning mathematics course, gradually guide the formation of students' mathematics creative thinking. Do you think innovative thinking in mathematics is useful in your life and study? According to the survey data of the question, the number of affirmative answers accounted for 87.3%, and a small number of students chose to be uncertain. It can be seen that the students improved their ability to solve practical problems by strengthening the training of innovative thinking in mathematics and learned how to apply what they had learned.</span>

Online and Offline Blended Teaching of Calligraphy Based on Deep Learning

<p style="text-align: justify;"><span style="font-family: "times new roman"; font-size: 16px;">With the continuous adjustment and upgrading of the national industrial structure development, the demand for applied innovative talents has increased sharply, and the training of applied innovative talents is a complicated process, not a simple superposition of professional knowledge, but a continuous knowledge accumulation and application are gradually improving. This article uses research methods of literature and field survey to conduct systematic exploration. The research finds that by guiding students to participate in enterprise project design and professional competitions, students are trained to use professional knowledge flexibly, and continue to consolidate, develop, and innovate to make students professional the comprehensive application of technology and professionalism have been continuously improved, so that the education chain, the innovative talent chain and the industrial chain can be integrated and coordinated to achieve good results.</span>

Challenges and Construction Path of Modern Internet of Things College Education under Algorithm Recommendation

<p style="text-align: justify;"><span style="font-family: "times new roman"; font-size: 16px;">The "Overall Plan for Deepening the Reform of Education Evaluation in the New Era" and the certification of teachers' majors have created a new era for public physical education in colleges and universities. The public physical education teaching model in colleges and universities in the new era directly affects the effect and evaluation of public physical education. The main problems at this stage are: from the theoretical concept, the physical education teaching model is recognized as diverse, the research of physical education teaching mode mostly focuses on theoretical research and is not systematic and in-depth, the combination of the theory and practice of physical education is not close enough, and the guiding effect is not ideal, and so on, based on different teaching ideas, according to the characteristics of the teaching unit stage and starting from the difference of the student base, constructing a diversified mode of public physical education in colleges and universities in the new era, to provide a reference for the reform of college physical education curriculum.</span>

Autism spectrum disorder classification on electroencephalogram signal using deep learning algorithm

&lt;span style="color: black; font-family: 'Times New Roman',serif; font-size: 9pt; mso-fareast-font-family: 'Times New Roman'; mso-themecolor: text1; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-US"&gt;Autism Spectrum Disorder (ASD) is a neurodevelopmental that impact the social interaction and communication skills. Diagnosis of ASD is one of the difficult problems facing researchers. This research work aimed to reveal the different pattern between autistic and normal children via electroencephalogram (EEG) by using the deep learning algorithm. The brain signal database used pattern recognition where the extracted features will undergo the multilayer perceptron network for the classification process. The promising method to perform the classification is through a deep learning algorithm, which is currently a well-known and superior method in the pattern recognition field. The performance measure for the classification would be the accuracy. The higher percentage means the more effectiveness for the ASD diagnosis. &lt;/span&gt;&lt;span style="color: black; font-family: 'Times New Roman',serif; font-size: 9pt; mso-fareast-font-family: 'Times New Roman+FPEF'; mso-themecolor: text1; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-US"&gt;This can be seen as the ground work for applying a new algorithm for further development diagnosis of autism to see how the treatment is working as well in future.&lt;/span&gt;

Battery energy storage system (BESS) design for peak demand reduction, energy arbitrage and grid ancillary services

&lt;span style="font-size: 9pt; font-family: 'Times New Roman', serif;"&gt;Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings.&lt;/span&gt;&lt;table class="MsoNormalTable" style="width: 444.85pt; border-collapse: collapse; border: none; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0in 5.4pt 0in 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext;" width="593" border="1" cellspacing="0" cellpadding="0"&gt;&lt;tbody&gt;&lt;tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes; height: 63.4pt;"&gt;&lt;td style="width: 290.6pt; border: none; border-top: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; padding: 0in 5.4pt 0in 5.4pt; height: 63.4pt;" valign="top" width="387"&gt;&lt;p class="MsoNormal" style="margin-top: 6.0pt; text-align: justify;"&gt;&lt;span style="font-size: 9.0pt; color: black; mso-bidi-font-style: italic;"&gt;Renewable Energy (RE) penetration is a new phenomenon in power systems. In the advent of high penetration of RE in the systems, several issues have to be addressed especially when it involves the stability and flexibility of the power systems. Battery Energy Storage System (BESS) has gained popularity due to its capability to store energy and to serve multiple purposes in solving various power system concerns. Additionally, several BESS can be combined to operate as Virtual Power Plant (VPP). This study will involve the design and implementation of BESS for five potential customer sites for the demonstration project and to be possibly integrated into one VPP system. The study is expected to demonstrate bill savings to the customers with BESS due to peak demand reduction and energy arbitrage savings.&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;

Global Research on Big Data in Relation with Artificial Intelligence (A Bibliometric Study: 2008-2019)

The purpose of this paper is to analyze and explore the research studies on Big Data in relation with Artificial Intelligence domain, which published in Peer Review Journals and indexed in Web of Science Core Collection for the period of 2008-2019 years.The publication data for our research analysis “Big Data in relation with Artificial Intelligence” has been derived from the Web of Science (WoS) Core Collection database (Indexes included SCI Expanded and SSCI). The Bibliometric Analysis Methods is applied for the study in order to find out the relations between two domains and to investigate the status of scientific development level in the research era. Therefore, our research concentrates and highlights the current issues discussed and studied by the scholars around the globe. This paper would useful for researchers to show the publication trends on big data in relation with artificial intelligence research outcomes in highly reputable SCI-Exp and SSCI journal (ranked by WoS).

Improvement in energy conversion for unmanned aerial vehicle charging pad

&lt;span style="font-size: 9pt; font-family: 'Times New Roman', serif;"&gt;An efficient charging station is a necessity for Unmanned Aerial Vehicle (UAV) systems. However, if that implementation adds more complexity and onboard weight, then that exercise becomes a burden rather than a benefit since UAV's engineers aim to improve efficiency by reducing the energy consumed by the software and hardware of the complete aeronautical system. This article recommends a fully automatic contact charging station for UAVs, which can charge UAVs and thus resolve flight endurance restrictions of the UAV. The ground station consists of square copper plates that are positively and negatively polarized successively in a chessboard with particular sizes to guarantee electric contact at the landing. The design methodology used with the loading station takes into account the differences in UAV orientation once the platform has landed. In addition, this innovation uses independent charging after touchdown. Thus, this technology relaxes common flight times and help to enhance general mission times. This paper presents a unique charging platform in a “chessboard” configuration, which is devised as an interconnecting interface to facilitate the charging process and overcome inaccuracies with the landing. The solution devised in this research requires few components and presents two power source options (solar &amp;amp; mains power). Additionally, this work presents, to the best of our knowledge, a uniquely innovative recharging landing platform, which incidentally requires no additional software or changes to the UAV’s onboard software settings&lt;/span&gt;&lt;span style="font-size: 9pt; font-family: Arial, sans-serif;"&gt;.&lt;/span&gt;

Safety and security solution for school bus through RFID and GSM technologies

&lt;span style="font-size: 9pt; font-family: 'Times New Roman', serif;"&gt;All children throughout the world aged 4 to 17 are going to schools every weekdays. The most common transport used by children is school bus. In many countries accross the globe, most children uses school bus services to go to school and return back home especially to working parents. Although safety of their children is always the main concern of all parents especially the young ones, they have to rely on the bus services due to time constraints during working hours. Sometimes parents need to call the bus driver to ensure their children has reached home or school. This will create inconvenience to bus driver and may lead to other unwanted consequences. Realizing the root of this problem, a school bus safety and security system has been proposed. The school bus safety and security system is a solution based on Short Messaging System that notifies parents if their children have safely arrived at home or school. RFID and GSM technologies are the main technique proposed in this project. RFID is used for several purposes; to identify the children and parents’ contact number, and attendance monitoring through head count system. GSM is used as a commucation platform to inform parents’ on their children’s movement via SMS. Several tests have been conducted to analyse the overall performance of the developed hardware prototype. From the results, it can be concluded that the developed project is successfully identify the children based on their unique ID, send a text message through SMS to parents with required information; and additional feature of attendance checker. The hardware prototype was successfully tested for children’s identification, attendance and SMS notifications to parents. As a consequence, this project could increase the safety and security solution for children travelling with school bus transportation and give parents peace of mind.&lt;/span&gt;

A performance analysis for real-time flood monitoring using image-based processing

&lt;span style="font-size: 9pt; font-family: 'Times New Roman', serif;"&gt;Nowadays, various image-based methods have been used in the area of monitoring. Whereas the precision of detection objects and real-time processing are the key issues for many applications. Considering the limitation of the working environment, the higher correctness and faster operating time can guarantee the work efficiency. In this paper, the image-based methods have been studied to monitoring the state of the flood in the real-time system. The performance of each image processing technique has been evaluated based on accuracy and processing time. In the flood monitoring system, the variation of important parameters can cause the change of performance and the effect of the variable parameters has been demonstrated from the experiment results. After comparing to the other image-based techniques, canny edge detection presents the best one, which also has better repeatability with the source image from different locations. Consequently, the improved canny edge detection method has been proved that can work very well on the real hardware in the outdoor environment.&lt;/span&gt;

Identification of hijaiyah letters using wirelessly controlled arabic braille module

&lt;span style="font-size: 9pt; font-family: 'Times New Roman', serif;"&gt;Among the major issues faced by the visually impaired people is the inability to read, and this is could be addressed by learning braille. However the scarcity of skilled instructors to teach the braille codes to the visually impaired people limits the learning process. This paper presents a psychophysical study on the ability of people with visual challenges to identify hijaiyah letters from a specially developed Arabic braille module. This module consists of six miniature solenoids that are wirelessly controlled via a Bluetooth and an Arduino Uno microcontroller. Five different hijaiyah letters were provided to the participants and were randomly repeated for three times. The participants were required to touch the Arabic braille module and state the hijaiyah letters that were displayed. With priori knowledge and initial familiarization of the braille patterns, 72.9% of the trials showed accuracy between the braille display and the stated hijaiyah letters. 20% of the participants have the highest repeatability responses of 80%. The outcome of this work showed the optimistic capability of the wirelessly controlled Arabic braille display to assist visually impaired individual to read hijaiyah braille letters and ultimately promotes independence in learning. &lt;/span&gt;