bluuebunny/crossref_metadata_2025 huggingface dataset:
DOA Estimation Method in Echo-localization Ability for Human-beings
Authors: Ni Yifei
Published: December 2022

The principle of echo-localization processing of human beings is quite similar with animals like bats and dolphins, which has been widely applied in sonar. Direction of Arrival (DOA) methods plays an important role in estimating the radar, sonar and many other echo-localization communication fields. Typical methods in resolving echo-localization problems including classical (Multiple Signal Classification) MUSIC, (Estimation of Signal Parameter via Rotational Invariance Technique), ESPRIT and compressed sensing. The echo-localization methods and the resolving ambiguity methods via uniform array are systematically introduced in this paper. On this basis, the fast and accurate algorithms for human-being echo-localization in parameter (azimuth angle, elevation angle and range) estimation of signal are further introduced from time domain and frequency domain. The accuracy of the angle and distance estimation of the algorithm calculated by computer simulation experiment is over 99.9% and 97% respectively. The effectiveness of DOA method was verified according to MUSIC algorithm, which provides a rapid and accuracy information in echo-localization ability of human being.
Application of Photoelectric Sensor Network in Substation Network Communication System
Authors: Tan Chengfei
Published: December 2022

Photoelectric sensor refers to the sensor based on photoelectric effect. In recent years, with the continuous development and stability of photoelectric sensor, more attention has been paid to its wide application and practicability in substation. The substation communication control system will be affected by the communication system structure and communication mode, so it is necessary to make a comprehensive analysis and concrete judgment to find the best control system method and application. Because of its good insulation, strong anti-interference ability, small size and light weight, photoelectric sensors are widely used in substation communication systems. The application of photoelectric sensors in substation communication system has changed the substation communication system and structure. This paper analyzes the principle and technical characteristics of photoelectric sensor, and discusses its influence on structural communication of substation communication control system. As a new type of electronic transformer, the application of electric sensor will have a profound impact on substation automation system.
4th International Conference on Electronic Science and Automation Control (ESAC 2022)
Authors: Alerander Martina , Tong Yang
Published: December 2022

The 2022 4th International Conference on Electronic Science and Automation Control (ESAC 2022) was held during November 19-20, 2022 in Bangkok, Thailand as a virtual conference due to the growing concerns over the coronavirus outbreak (COVID-19), and in order to protect the well-being of our attendees, partners, and staff as our number one priority.

The objective of this conference was to provide a common platform to engineers, practitioners, scientists and researchers across the globe for exchanging their knowledge and views to deal with global challenges. The theme of this conference was not only the fundamental technology in the fields of electronic information, signal processing, electrocommunication, industrial electronics, electronic instrument, electronic science, automation and control technology, but also can change our society by exploring new horizons and continuous progress.

This scientific event brings together more than 150 national and international researchers. The conference model was divided into three sessions, including keynote sessions, virtual presentations and online Q&A discussion. All accepted papers were strictly selected based on originality, significance, relevance, and contribution to the area after being peer-reviewed.

We would like to acknowledge all of those who supported ESAC 2022. The help and contribution of each individual and institution was instrumental in the success of the conference.

The ESAC Scientific Committee

Bangkok, Thailand
Analysis of Electromagnetic Interference Reduction from Printed Circuit Boards
Authors: Liang Qixiong
Published: December 2022

Nowadays, electricity is the most important and necessary energy in human society and daily life, because electricity is convenient and safe to transfer between different locations. However, electromagnetic interference (EMI) always accompanies electricity and has brought a lot of problems. Especially in printed circuit boards (PCB), the EMI can break the circuit or cause a short circuit, which is dangerous in creating a PCB. To effectively reduce EMI from PCB, three different methods of reducing EMI from PCB were chosen to compare with each other. By comparing their price, practicability, effectiveness, data, and technology for reducing EMI from PCB, PCB designers can choose the methods that are suitable for their situation.
Performance Analysis for Energy-Efficient Comparators
Authors: Deng Ruichen
Published: December 2022

This work studies three different comparator proposed in recent years. Compared to the strnongARM latch as well as the Elzakker’s comparator, the dynamic comparator added cross-coupled devices that keeps the pre-amplifier’s integration nodes from fully discharge to the ground and thus improves energy performance. The dynamic bias latch-type comparator is an innovative design which added a tail capacitor to the pre-amplifier in order to block off the discharge route between the internal nodes and the ground. Though this design reduced the energy consumption significantly compared with the Elzakker’s comparator, it results in longer delay and only little improvement on the input-referred noise. The FIA dynamic comparator implemented a floating inverter amplifier (FIA) that utilizes a reservoir capacitor which cuts off its charging path and discharging path significantly reduced the energy consumption and improved noise performance to power itself.
Comparative Study of High Speed ADCs
Authors: Li Donggen
Published: December 2022

With the development of information technology, analog-to-digital converter (ADC) is widely used. In products such as radar, ultra wideband communication system, high-performance digital oscilloscope and so on, the speed performance of analog-to-digital converter is usually the bottleneck of the whole system performance, so the research of high-speed ADC has attracted much attention. ADC is an interface circuit that converts analog signals into digital signals that can be processed by DSP. This paper will start with the basic knowledge of ADC, explain the general working process of ADC, introduce several architectures and working principles suitable for high-speed ADC, and compare and analyze their advantages and disadvantages.
Different Methods of Linear Phase IIR Filer Realization
Authors: Wang Zixuan
Published: December 2022

Signal processing has become one of the most popular research topics. Researchers have designed a variety of digital filters to exclude unwanted random noises during the transmission or extract part of the signal in the desired range. There is a prevalent trend for digital filters to replace analog ones since they do not require hardwires. All the performances are operated on a single processor and are free from the effect of external factors. Finite impulse response (FIR) and infinite impulse response (IIR) filters in digital filters respectively provide infinite and finite impulse responses. In the application, it is preferred to have a linear phase digital filter, and FIR filters are naturally linear. However, FIR filters have higher orders and group delay than IIR filters, so researchers found various ways to implement linear phase IIR filters for improvement. This paper introduces and compares Powell and Chau Linear Phase IIR Filter, Kwan Linear Phase IIR Filter, and Xiao, Oliver, and Agathoklis Linear Phase IIR Filter.
Matlab-based gain modeling and simulation of a 1300-1400 nm wavelength band neo-doped fiber amplifier
Authors: Liu Yuxiang , Wang Zhirui , Zhang Junjie
Published: December 2022

A systematic investigation of gain-modulated neodymium-doped fiber laser is carried out. The numerical model of gain modulated thulium-doped neodymium fiber laser oscillator and amplifier is constructed based on the rate equation and transmission equation, and solved by the time domain finite difference method. The nano-second laser output in the 2 μm band with high conversion efficiency, narrow linewidth, and single polarization was obtained by numerical simulation. A 2 μm pulsed laser output with a maximum power of 340 mW and amplification of 42 dB was obtained using a master oscillator, and a 2 μm pulsed laser output with a maximum power of 9.13 W was obtained using a power amplifier. The model can be used as a reference for experimental research and engineering design of this type of laser.
Study on Working Principle, Structure, Enhancement Technology, and Applications of Organic Light-emitting Diodes
Authors: Sheng Hao
Published: December 2022

Nowadays OLEDs outperform normal LEDs in terms of ease-processing, flexibility, skinniness, lightweight, and manufacturing cost. However, there is still much room to improve in terms of materials, efficiency, and longevity. Improving the performance of OLEDs has become the most popular research area. In order to make full use of excitons after recombination of carriers, phosphorescent OLED has been proposed. Recently, there is a gradual trend for phosphorescent OLEDs to be replaced by TADF OLEDs, as these TADF OLEDs can not only exhibit 100% internal quantum efficiency and are cheap to produce because they do not contain precious metals. At the same time, TADF OLEDs are considered to have more room for development especially in the aspect of longevity and color. Therefore, more researches are still needed to solve the blue OLED problem because compared to other colors, such as red and green OLEDs, blue OLEDs still have a big gap in stability and efficiency. In this work, the history of OLEDs, their working principle, the technologies that have been improved, and the cross-border derivative applications were studied.
Study on semiconductor materials for TFT and their application in flat panel displays
Authors: Xiao Meixuan
Published: December 2022

TFT has been widely used in recent years because of its excellent performance. Considerable research has been done to meet the demand for high-quality and high-resolution displays, making the choice of well-suited and high-performance materials more significant than ever. This work first presents the overall development from a historic perspective. The next section introduces the basic structure of thin film transistors (TFTs), followed by recent advancements in semiconductor materials of TFT, including metal oxide, amorphous silicon, polycrystalline silicon, carbon nanotubes, and organic semiconductors. These materials are analyzed from various aspects: electrical properties, process temperature, fabrication complexity, mobility uniformity on large panels, and compatibility with substrates. After that, the properties of these materials are compared in terms of their large-scale fabrication capability in flat panel displays. Advantages and challenges are also discussed as each of the five materials is suitable for specific commercial products. This work provides a reference for the selection of TFT materials in future flat panel display industry.
Recent Progress of Hole Transport Layers of Inverted Perovskite Solar Cells
Authors: Liu Wei
Published: December 2022

Perovskite solar cells, also known as PSCs, have become a potentially viable choice for a source of clean energy. This is especially true for the inverted structure, which boasts high stability and allows for synthesis by solution at low temperatures. In the inverse structure, one of the most important parts is called the hole transport layer, which plays a key role in acting as a substrate and transporting holes. Several studies on high-temperature liquids have been carried out as part of an effort to effectively enhance the device performance of inverted perovskite solar cells (IPSCs). In addition to common organic components, including PEDOT: PSS and PTAA, this paper also provides information regarding inorganic HTL materials, such as NiOx and compounds based on copper. This study discusses in depth the benefits and drawbacks of these four materials, as well as potential avenues for future research and development, such as the application of dopants and various interface optimization methodologies. It may be possible to improve the PCE of IPSCs as well as the stability if HTL materials are modified. This paper provides new researchers with a solid foundation and direction for optimizing HTL materials.
Research Progresses on Suppressing the Short-Channel Effects of Field-Effect Transistor
Authors: Huang Junyuan
Published: December 2022

Recently, with the continuous miniaturization and integration of microelectronic devices in all fields, the conventional MOSFET structure has suffered from severe short channel effects with continuous downsizing. In order to further improve the electrical properties of Very Large-Scale Integration Circuit (VLSI) and obtain the larger device integration density in circuits, new revolution in MOSFET technology is needed, which involves the innovations of new materials, new technologies, and new device structures. This paper explores device structure innovations in traditional planar transistors, such as the device performance enhancement via the high-κ/metal gate and especially the three-dimensional device structure—FinFET, as well as the subsequent development of gate-all-around FET proved to outperform FinFET. The development of high-performance devices based on new materials has become an imperative direction to break through the current bottleneck of silicon-based technologies. This paper focuses on an overview of transition-mental dichalcogenides and ferroelectric materials, including frontier research and current inadequacies. Based on these new approaches, VLSI manufacturing technology has seen many breakthroughs in recent years, which will successfully extend Moore's Law and further promote the development of emerging technologies in multiple fields.
Analysis of the Improved Conventional Dynamic Comparator and the Edge-Pursuit Comparator
Authors: Zhou Yibo
Published: December 2022

In order to understand and learn the comparator in detail, three kinds of comparator are analyzed in this paper. An improvement of the traditional dynamic double-tailed comparator. So as to get fast operation and low power in low supply voltages, the circuit of the traditional double-tailed comparator is modulated. Another one is an improved low-power comparator. During evaluation, we can activate its latch delayed in order to avoid excess power consumption and get sufficient preamplification gain. The most innovative design is named edge-pursuit comparator (EPC) which is a new energy-efficient ring oscillator collapse-based comparator. With changing the comparison energy on the basis of input difference uncontrolled, it can automatically adjust its performance. It can also eliminate unnecessary energy which is spent on coarse comparisons. In addition, we get analysis of the design which is in the phase domain in detail. It presents that the energy efficiency can be improved over traditional comparators even out of energy scaling.
Prediction of Electric Load Neural Network Prediction Model for Big Data
Authors: Yi Zhiqiang
Published: December 2022

Spike sorting algorithms is a considerable significant way to collect neural signals in neural signal acquisition systems. One method to realize this function in hardware aspect is to use absolute-value detector. In this paper, the common circuit topology is given by using static CMOS and PTL technology. Then, through comparing with the delay and energy of unit reference inverter, the optimal energy-delay model when sacrificing extra 50% delay can be obtained by the way changing the size of CMOS and Vdd simultaneously, which save nearly 83% energy dissipate than minimal delay model.
A 93.56 FO4(1V), 141.36 Eu(1V) 4-bit Absolute-Value Detector
Authors: Wang Qianqing
Published: December 2022

With the development of technology and The Times, the industry has higher and higher requirements for chip performance. Using better circuit design to achieve this goal has become the direction of researchers today. The 4-bit absolute value detector is one of the most important and basic circuits in computer storage and data processing. The effective improvement of its performance will greatly promote the improvement of processing efficiency in the whole chip industry. This project is to design a circuit of a 4-bit absolute value detector. The main functions it implements are it can get the absolute value of 2’s complement, then compare the 3-bit absolute value with a 3-bit threshold value. This paper first divides the design into three parts: absolute module, comparison module and other small modules. Minimize the delay by exploring the critical path and changing the gate size. Finally, through theoretical calculation and optimization, the optimal scheme designed in this paper is determined. The results of this paper will be helpful to the further development of related industries.
The Standard of Wireless Network Technology and Its Application in Router
Authors: Liu Xinming
Published: December 2022

The development of routers has been a subject that has attracted researchers from a diverse range of fields including wireless networks standard and technology development. Make new products meet technical standards through continuous hardware upgrades such as chip updates and expansion of new frequencies. The direct effect of routers is that the speed of the Internet continues to increase, which promotes the development of many electronic products. By analyzing the development of routers and wireless network standards, this paper understands the general direction of future routers. The development of routers in the future needs to face the challenges of high network speed, low latency, intelligence, and more frequency bands. The application of hardware or new technology is a new opportunity brought by the development of routers.

Keyword: Traditional Network. WIFI development, Router
Development status of inverted perovskite solar cells
Authors: Lu Sihan , Xie Jihui , Yang Xielin , Zeng Guanlin
Published: December 2022

While the population has exploded, the world's energy demand has also risen exponentially. Energy pollution is also very severe. Therefore, it is urgent to increase the utilization of renewable new energy. Solar power has the greatest potential in the new energy sources. One kind of solar cell is the inverted perovskite solar cell (I-PSC). It has the advantages of simple device structure, high absorption coefficient, small hysteresis effect, and good defect tolerance. In this paper, the effects of electron transfer, hole transportation and manufacturing technology on the appearance of inverted perovskite-type solar cells are discussed, also the foreground of their commercialization is presented. It is believed these processes are a small step for ameliorating the photoelectric conversion efficiency and stability of these devices.
Comparison and Analysis of the third generation of the solar cells
Authors: Shao Zhuoer
Published: December 2022

Since the current energy crisis, the efficiency of using solar cell energy has become increasingly important. In order to get a high efficiency, new kinds of solar cells would be needed, which called the third generation of solar cells. This paper review three kinds of solar cells, including the perovskite solar cells, the quantum dots solar cells and the organic solar cells. Firstly, the structure of perovskite solar cells is composed of a FTO conducting glass, a TiO2 blocking layer, a TiO2 mesoporous layer, a perovskite layer, a HTM (Hole Transport Material) layer, and mental electrode. Then, I sum up the manufacture and the development of the perovskite solar cells. Secondly, this paper analysis the structure, manufacture, and development of quantum dots solar cells. The structure of quantum dots solar cells includes the transparent conducting oxide, wide bandgap oxide semiconductor film, quantum dot sensitizer, electrolyte, and counter electrode. The third one is the organic solar cells. The structure of the organic solar cells includes layer, cathode, anode, and transparent substrate. Finally, this paper reviews the merits and defects of each solar cells.
Further Research on Frequency Allocation (19-Cell System) Method based on IFR and FFR
Authors: Zhou Xiaodi , Chen Yuxiang , Chen Zhuo
Published: December 2022

Many of the most advanced technology has a basic need for efficient telecommunication. In order to achieve this goal, the team should allocate those frequency channels in an intelligent way so that the interference can be reduced to the maximum extent. Here the team introduced a new method based on IFR3&IFR1  (Integer frequency reuse) in a 19-cell network, but also apply the FFR (fractional frequency reuse) method to reduce the interference ulteriorly. In the pure IFR situation, the integer frequency reuse factor and the cellular network specification collectively decide the network capacity. While in FFR only a fraction of the whole bandwidth is used by the users in the edge. By contrast, the users near the BS can make use of the total bandwidth. The cell is divided into an outer and an inner part in this effective way. Fractional Frequency Reuse (FFR) and its derivative method are accepted widely in the downlink (DL) inter-cell interference coordination(ICIC) schemes. The team also optimized the FFR method by measuring the distance in a more precise way. The team utilized Matlab to make a simulation of the system applying the new method and come to a couple of reasonable conclusions by comparing the FFR+IFR3 with FFR+IFR3. FFR+IFR3 has a better performance against FFR+IFR1 in a system whose distance between each cell is with more accuracy. While the average number of users per cell and transmission power for cell edge have little impact on average capacity. When the SNR increases, the network capacity starts steep but later flattens. Our method is more intelligent and can minish interference efficiently.
Comparison of Different Frequency Channel Allocation Methods in ultra-dense networks
Authors: Liu Jia
Published: December 2022

The impact of information transmission on production and life under dense networking is self-evident. Dense networking application scenarios include airports, dense residential buildings, dense business districts and blocks, campuses, large gatherings, stadiums, subways, etc. However, with the increase of 5G frequency band, the 5G macro base station signal attenuates more when it penetrates the wall than 4G, which makes it difficult to cover indoor signals. The outdoor 5G macro base station signal can only provide shallow indoor coverage after penetrating obstacles such as brick walls, glass and cement, which cannot guarantee the good experience required for indoor deep coverage. This paper compares and discusses various channel allocation algorithms based on user scenarios in ultra-dense networks. By adjusting some parameters of 19 units, the integer frequency reuse (IFR) method (N=1,3), fractional frequency reuse (FFR) method, simultaneous water injection (SWF) method, and transmission interference temperature limit (TX-ITL) method are compared. In order to increase the capacity, a combination of several algorithms will also be used.
Comparison of FFR+IFR and IFR Models with Different Frequency Reuse Factors in Cellular Networks
Authors: Lin Danyu
Published: December 2022

With the development of information network transmission, how to efficiently complete frequency reuse has been studied by many scholars. Frequency reuse refers to reusing the same frequency in a digital cellular system. Generally, limited frequencies are divided into several groups. As we all know, fractional frequency reuse (FFR) and integer frequency reuse (IFR) are classical frequency reuse methods in cellular networks. The combination of FFR method and IFR method to find the best model has attracted the attention of researchers at home and abroad. Therefore, through the fusion and combination of the four models, this paper will first introduce two frequency reuse methods, IFR and FFR, as well as the combination of these two methods and the calculation methods of these two methods. Through Matlab software modeling and simulation, according to the average capacity results, study the impact of different user numbers on the average capacity of the central area and the edge area. The experimental results provide a new idea for future practical applications.
Blood Cell Count and Detection Method Based on YOLO
Authors: Liu Baizhen
Published: December 2022

Blood Cell Count and Detection (BCCD) has always been a popular topic in object detection and many researchers have applied and modified the two basic models: Faster RCNN and Yolo. However, it is still difficult to tell which model or modification would perform better on other BCCD datasets. Thus, this paper mainly focuses on finding a better model and modifications to BCCD example datasets containing 364 images of blood cells. Faster RCNN and Yolo v5 were used as the basic two models for the dataset. Through training and comparisons between the two models, the better model was chosen to make further modifications or adjustments to achieve a better maP result possible. The result shows that in this specific dataset, Yolo v5 performs better. The modified Yolo v5 model also has an improvement of 0.6 percent of map 0.5 and 0.5 percent of map 0.95 comparing to the original model, showing that modification of model configuration, model structures including head and backbone would efficiently improve the time taken for training and maP.
Machine learning-based theoretical optimization of antenna design
Authors: Tong Yi
Published: December 2022

The changing communication era demands higher precision and more efficient antenna designs, which require more automated processing methods and more powerful data storage techniques. Currently, machine learning can optimize solutions at high speed and has shown powerful performance in various fields, attracting much attention. This paper summarizes the application of machine learning in antenna design, analyzing its basic concepts and relationship with artificial intelligence and neural networks. This paper also compares the methods and effects produced in each application by analyzing the results of electromagnetic characteristic curves. The results show that machine learning reduces computational errors and computation time and is able to predict the next input and correct the antenna behavior with high accuracy. The key outcomes are quickening the antenna design procedure, decreased mistakes, and wasted time, and increased antenna design accuracy. Machine learning algorithms can assist antenna design in the future to improve antenna accuracy and design efficiency.
Flexible Organic Light-Emitting Diodes: Structure and Fabrication
Authors: Wen Haolin
Published: December 2022

Flexible organic light-emitting diodes (OLED) technology with thin, light in weight, and free in design have been developed and perfected rapidly. The versatility of flexible OLED technology has been effectively proved in the sectors of displays, lighting, and medicine. In this article, the structure and fabrication of flexible OLED were introduced. Normal flexible OLED device construction includes flexible OLED substrate, barrier layers, electrode and organic layer. The flexible OLED is made on the substrate. The barrier layer is used to shield the OLED material from airborne oxygen and humidity. The electrodes are used for electricity, and the organic layer is used for light. The production processes of flexible OLED include coat-debond with advantages such as good stability and thermal conductivity, bond-debond with the advantage of simple and convenient and roll-to-roll [R2R] method with advantages of low cost, and mass production. Additionally, the application fields of these methods have been highlighted.
Natural Ground Information Detection Method Based on GNSS Ground Reflection Delay Signal
Authors: Peng Peigen , Li Yongqi , Zhao Jian
Published: December 2022

For natural surface disasters in key areas, if small deformations such as surface subsidence and displacement can be continuously monitored, it can provide early warning and effectively protect people's lives. In the past, small deformations were mainly measured by using GNSS direct signal to calculate displacement changes or by using SAR information, which can only measure one point. To monitor the deformation of an area, multiple monitoring points need to be deployed. Based on this, this paper mainly adopts GNSS ground reflection delay signal, and according to the different information of direct and reflection signal paths, combined with the geometry of receiver and ground reflection point and satellite, it can solve the small deformation of the ground surface, and realize the original point measurement to surface measurement while maintaining the original measurement accuracy, so as to improve the high-precision monitoring range and reduce the number of monitoring points.
Structural improvement and application of cigarette packets pusher for YB65A rigid strip packaging machine
Authors: Ding Yun , Li Zhengwei , Lv Xiaobo , Liu Jingxun , Li Wenjie , Ren Peng
Published: December 2022

The side baffle of the pusher plate of YB65A packaging machine is used to blocks and locates the cigarette pack. During the production, the cigarette pack contacts the side baffle surface of the pusher plate, causing obvious scratches on the surface of the cigarette pack, reducing the quality of the cigarette packs and causing potential quality hazards. To solve this problem, the distance between side baffle and cigarette packs is increased by redesigning the key parts of the pusher. The application results show that the scratches on the surface of cigarette pack have been solved, the production quality of cigarette pack has been improved.
Research on health evaluation model for elevator based on analytic hierarchy process
Authors: Lv Xiao , Zhang Li , Kang Ligui
Published: December 2022

Elevator safety has been widely concerned by the society. In order to evaluate the health of elevator visually, a quantitative evaluation model based on analytic hierarchy process is proposed. The value of elevator health is determined according to the failure frequency, inspection result, maintenance etc. The weight value of each factor is calculated by analytic hierarchy process which based on two level index system. Besides, the subtraction method was added to the analytic hierarchy process for improving its operability. The practice is conducted to verify the evaluation method is feasible which is applied to risk warning for elevator.
Drilling scheme analysis and output prediction of instrumented wheel-set based on Finite Element Method and LSTM
Authors: Chen Shuangxi , Jiang Songlin , Man Haitao
Published: December 2022

Based on the Finite Element Method and wheel-rail force measurement theory, the effects of different drilling schemes and parameters on the output of the measuring electrical bridge are analyzed, and the optimal parameters are determined. The finite element model of a metro instrumented wheel-set is established by software ABAQUS. The effects of drilling radius, hole size and wheel-rail contact point on the strain of measuring points are calculated and analyzed, and the measuring bridge outputs of two different drilling schemes are compared. The output of the wheel-rail forces is predicted based on LSTM long short memory network. The results show that: (1) the optimal drilling position is on the middle surface of the wheel, (2) The drilling scheme of eight-hole is better than that of four-hole, (3) LSTM neural network can realize decoupling of bridge signal and high precision prediction of wheel-rail forces.
The development of graphene and its use in flexible electronics
Authors: Li Yichen , Nie Yufan , Zhou Jiaqi
Published: December 2022

In recent years, graphene has been deeply studied by scholars, and has attracted high attention in the field of flexible electronics. In order to better understand the properties and application of graphene, this article systematically summarized and analyzed the applications in the field of flexible electronics from multiple angles to better display its characteristics. It mainly introduces the development, preparation method, classification, and application of graphene. Since its discovery in 2004, it has become a special and useful nanomaterial. Graphene has been widely used in the field of flexible electronics in the past few years due to its excellent mechanical properties, electrical conductivity, and transparency. Moreover, we specifically show the development trends and application characteristics of graphene in flexible solar cells, field-effect transistors, nanogenerators. In addition, the problems facing graphene are also mentioned. Finally, the development prospects of graphene-based flexible electronics are presented and suggested for further studies.
TÜRKİYE’NİN EĞİTİM DİPLOMASİSİNDE TÜRKİYE MAARİF VAKFININ ROLÜ
Authors: KAPLAN Haktan , ÇİMEN İbrahim , BALCI Engin
Published: December 2022

Bu çalışmada, kuruluş amacında “Türkiye’nin uluslararası eğitimde dünyaya açılan kapısı” olarak belirtilen Türkiye Maarif Vakfı’nın faaliyetleri, geleneksel diplomasi anlayışından farklı olarak diğer ülke kamuoylarını etkilemeye yönelik olarak yürütmüş olduğu ve yumuşak güç olarak tabir edilen unsurlardan birisi olan eğitim diplomasisi açısından incelenmiştir. Vakıf, faaliyette bulunduğu ülkelerde gerek Türkiye’nin yükseköğretim imkânlarının yurt dışında tanıtılmasına gerekse öğrencilerin yükseköğretim için Türkiye’yi tercih etmesine öncülük etmektedir. Bu bağlamda nitel araştırma yöntemlerinin imkânlarından faydalanılarak hazırlanan bu çalışmada, Vakfın uluslararası arenada yürütmüş olduğu eğitim diplomasisi faaliyetlerinin öneminin vurgulanması ve incelenmesi konu edinilmiştir.
TÜRKİYE’DE ARAPÇA ÖĞRETİMİNDE ARAPÇA ÖĞRETMENLERİNİN YARATICI DRAMA YÖNTEMİNE İLİŞKİN GÖRÜŞLERİ
Authors: CEYLAN Senem
Published: December 2022

Son yıllarda yapılandırmacı yaklaşıma dayalı öğretim anlayışının uygulanmaya başlamasıyla birlikte öğrenen merkezli yöntemler yaygınlık kazanmaya başlamıştır. Özellikle eğitim fakültelerinde drama programlarda yer almış ve öğretmen adaylarının drama yöntemiyle ilgili bilgi ve becerilerinin gelişimine ağırlık verilmiştir. Ancak öğretmen yetiştiren kurumlardan biri olan İlahiyat Fakültelerinde drama yönteminin programda yer almasıyla ilgili herhangi bir girişim olmadığı görülmektedir. Bu durumun İlahiyat Fakültesinde öğrenim gören öğrencilerin dramaya ilişkin bir bakış açısının oluşmamasının nedeni olduğu gibi uygulama süreçleri açısından Arapça dersinde yeterli ve etkin düzeyde drama yönteminin uygulanabilirliğine engel teşkil etmiştir.

Bu çalışmada İzmir örneğinde İmam Hatip Liselerinde görev alan Arapça öğretmenlerinin dramayla ilgili bakış açıları incelenmiştir. Drama yöntemiyle ilgili bilgi ve tutumları analiz edilmiş ve Arapça derslerinde kullanma düzeyleri araştırılmıştır. Özellikle İlahiyat Fakültesi çıkışlı Arapça öğretmenlerinin drama yöntemiyle ilgili bilgi ve tutumlarının yeterli düzeye ulaşmadığı ve uygulama süreçlerinde bazı sorunlar olduğu dikkati çekmektedir. Bu nedenle söz konusu öğretmenlerin drama ile ilgili farkındalık düzeylerinin yükseltilmesine öncelik verilmelidir. Bu çerçevede öğretmenlerin drama yöntemine ilişkin problemleri konusunda çözüm önerileri sunulacaktır.
HISTORY OF SRI LANKA-TÜRKIYE RELATIONS: FROM REMOTE ANTIQUITY TO THE 20TH CENTURY
Authors: CAREEM Zameer
Published: December 2022

Sri Lanka, famously called the ‘pearl of the Indian ocean’, is an island nation located in the tropics, lying off the southern tip of the Indian subcontinent. Given her favourable geostrategic position at the crossroads of major maritime routes, Sri Lanka, which is richly endowed with natural resources, has since time immemorial, been a major player in International trade. Known formerly as Serendib, Saheelan and Seylan among the Türks, Arabs and Persians, Sri Lanka, on which prophet Adam is believed to have descended when expelled from Paradise, has been immortalized in the works of numerous scholars including Mawlana Rūmī, and Katip Çelebi. Despite the fact that Süleyman the Magnificent's reign heralded the beginning of contacts between Sri Lanka and Ottoman Türkiye, official diplomatic relations were not established until Sulţan Abdül Aziz's reign in 1864. The Muslims of Si Lanka revered the Ottoman Sulţāns to the point of mentioning their names in the ‘khutba’, or sermon, during Friday prayers, and this age-old tradition continued until the reign of Sulţān Abdül Hamid II, after whom the first Muslim Boys’ School and a road in Sri Lanka are named. Unfortunately, limited research has been done on Sri Lanka-Türkiye historical relations, a subject that, despite its relevance, has received little attention. Therefore, this article, which examines Sri Lanka-Türkiye relations from ancient times to the twentieth Century, intends to enlighten the readers about the largely untold and unknown facets of our shared history and heritage. Given that Sri Lanka is one of Türkiye's important allies, raising awareness of this topic is timely, and pertinent.
Dampak Pandemi COVID-19 terhadap Capaian Sustainable Development Goals (SDGs)
Authors: Habibi Muhammad , Pratama Dyah Anugrah
Published: December 2022

This study aims to analyze the impact of COVID-19 on the achievement of the
Sustainable Development Goals (SDGs) in Indonesia. The sustainable development goals
represent a global plan of action, approved by world leaders, intended to end poverty,
reduce social inequality, and protect environment. These SDGs consist of 17 goals and
169 targets that are scheduled to be achieved by 2030, and Indonesia began implementing
them in 2015. The method used in this study was a bibliometric and descriptive
evaluative analysis, wherein data was collected by using the Publish or Perish
application, and then processed with VOSviewer application software. Four indicators
needed to be scrutinized, namely; (1) the socio-economic impact of COVID-19; (2) the
impact of COVID-19 on sustainable development goals; (3) the new normal for the
achievement of the SDGs; and (4) the financing of SDGs in a post-COVID period. The
results of the study show that the socio-economic impact of the COVID-19 pandemic
greatly influences SGDs. Cost is a crucial factor as pandemic’s cost is huge, and by all
means has a direct impact on SGD efforts. To realize SGDs by 2030 would require
governments around the world to improvise in dealing with it, and indeed implement a new
normal in governance processes.
Demografya, İletişimde Kader Midir? Ön Lisans ve Lisans Düzeyindeki Öğrencilerin Sözlü İletişim Becerilerinin Demografik Değerlendirmesi
Authors: KÖMÜR Gökhan , KESKİN Savaş , PABUÇCU Hakan
Published: December 2022

Bu araştırma, iletişim araştırmalarında güçlü bir determinist paradigma olan demografi etkisinin çağdaş dünyada geçerliğini yitirmeye başladığı varsayımını, Bayburt Üniversitesi Sağlık Bilimleri Fakültesi ve Sağlık Hizmetleri Meslek Yüksekokulu öğrencilerinin iletişim becerileri özelinde test etmektedir. Özellikle sağlıkla ilgili mesleklerde iletişim becerilerinin yoğun olarak kullanılması bu alandaki meslek sahiplerinin iletişim becerilerinin yüksek olmasını gerektirmektedir. Birçok beceri için temel oluşturan iletişim becerileri bireyler tarafından öğrencilik yıllarında daha aktif bir şekilde geliştirilebilmektedir. Öğrencilerin bu yıllarda almış oldukları dersler ile beraber, olaylar karşısında yaşayarak, duyarak ve görerek edinmiş oldukları tecrübeler, iletişimlerini etkili kılabilecek yeteneklerin kazanılmasına imkân sağlamaktadır. Günümüzde icra edilen mesleklerin birçoğu insan ilişkilerinin yoğun olduğu ve iletişime açık ortamlarda gerçekleşmektedir. İletişim teknolojilerindeki yükselişle birlikte sözel iletişim becerilerinin dijital sistemlerle yöndeşmesi, coğrafi ve demografik bağlayıcılığın da sorgulanması gerektiğini açığa vurur. Uzunca bir dönem ‘kader’ olarak tanımlanan coğrafyanın misyonunu modern zamanda üstlenen “demografya”, halâ etkin bir kavrayış odağı olarak iletişim bilim araştırmalarının merkezinde yer alırken artık psikografi ağırlıklı bir anlayışa geçilmesi gerektiği tezi, bu araştırmanın temel dayanağıdır. Yükseköğretimde bir ihtiyaç olan iletişim becerileri tasarımı için gerekli olan altyapı araştırmalarında psikografi temelli düşüncenin daha doğru bir düşünce olacağını tanıtlamak için test gerçekleştirilen anket çalışmasında, demografik bağımsız değişkenler temelinde 7 hipotez sınanmış ve demografyanın genel olarak anlamlı farklılığa neden olmadığı saptanmıştır. Bu sonuç, tarama modelli saha çalışmalarında psikografik tasarıma daha fazla ağırlık verilmesi gerektiğine dair bir ön tespittir.
Rainfall trends and district-wise drought climatology during southwest monsoon season over Bundelkhand region of Uttar Pradesh, India
Authors: BISHT HIMANI , LOO SHA , SUNA TRUPTIMAYEE , VISHNOI LATA , GAUTAM SHWETA , SINGH DK
Published: December 2022

Drought is a climatic anomaly that can occur in all regions with vastly different climate. A persistent lack of precipitation over an extended period scaling usually a season or more results water stress that significantly impacts economic, agricultural, environmental and social aspects. For an effective monitoring of drought condition, drought indices play major role which are region specific and have limitation of applicability in different climatic condition. Hence, the present study aims to analyse the climatology and drought by two drought indices viz. Standard Precipitation Index (SPI) and standardized precipitation evapotranspiration index (SPEI)) for Bundelkhand region, the most drought prone area of Central India by using 48 years (1969-2016) rainfall and temperature data. The trend analysis was performed at a significance level of 5% by using non parametric Mann-Kendall (MK) test and Sen’s slope estimator with the help of XLSTAT 2021 software. The SPI and SPEI were calculated with the SPEI R package in R-Studio software. The study revealed that i) the southwest monsoon (June to September) contributed 88.8-91.8% of total annual rainfall with coefficient of variation (CV) of 29.9-39.5%. ii) A non- significant decreasing trend in rainfall was noticed for almost all the districts during July, August and September. However, a significant (0.05 level) and decreasing trend was observed in July (4.03 mm rainfall/year) and August rainfall (4.03 mm rainfall/year) for Hamirpur. iii) The frequency of moderate drought events increased followed by severe and extreme drought events. The decreasing trends of SPI-3 and SPEI-3 were also observed which indicates more dry spells during southwest monsoon season. iv) A good correlation (r= value of 0.88 to 0.91) was observed between SPI-3 and SPEI-3 during southwest monsoon season which indicates the importance of theses indices for assessment of drought in the study region.
A Comparison between Gaussian Plume Models and Analytical Advection-Diffusion Equation in Unstable Condition
Authors: ESSA KHALED , ELSAIED SAWSAN , KHALIFA AYMAN , WHEIDA ALI
Published: December 2022

In this paper, comparing between Gaussian plume models and the solution of Advection-diffusion equation in three dimensions using different shapes of dispersion parameters and eddy diffusivities respectively. After that, comparing between Gaussian plume model, proposed model and observed concentrations data which measuring on Egyptian Atomic Energy Authority EAEA for Iodine-135 (I135) in unstable condition.
Surgical Versus Nonsurgical Management of Humeral Shaft Fractures: A Systematic Review and Meta-Analysis of Randomized Trials
Authors: Oliver William M. , Bell Katrina R. , Molyneux Samuel G. , White Timothy O. , Clement Nicholas D. , Duckworth Andrew D.
Published: December 2022

Introduction:

The aim was to compare surgical and nonsurgical management for adults with humeral shaft fractures in terms of patient-reported upper limb function, health-related quality of life, radiographic outcomes, and complications.

Methods:

MEDLINE, Embase, Cumulative Index to Nursing and Allied Health Literature, PubMed, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, International Clinical Trials Registry, and OpenGrey (Repository for Grey Literature in Europe) were searched in September 2021. All published prospective randomized trials comparing surgical and nonsurgical management of humeral shaft fractures in adults were included. Of 715 studies identified, five were included in the systematic review and four in the meta-analysis. Data were extracted by two independent reviewers according to the Preferred Reporting Items for Systematic Review and Meta-Analysis statement. Methodological quality was assessed using the revised Cochrane risk-of-bias tool for randomized trials. Pooled data were analyzed using a random-effects model.

Results:

The meta-analysis comprised 292 patients (mean age 41 [18 to 83] years, 67% male). Surgery was associated with superior Disabilities of the Arm, Shoulder and Hand (DASH) and Constant-Murley scores at 6 months (mean DASH difference 7.6, P = 0.01; mean Constant-Murley difference 8.0, P = 0.003), but there was no difference at 1 year (DASH, P = 0.30; Constant-Murley, P = 0.33). No differences in health-related quality of life or pain scores were found. Surgery was associated with a lower risk of nonunion (0.7% versus 15.7%; odds ratio [OR] 0.13, P = 0.004). The number needed to treat with surgery to avoid one nonunion was 7. Surgery was associated with a higher risk of transient radial nerve palsy (17.4% versus 0.7%; OR 8.23, P = 0.01) but not infection (OR 3.57, P = 0.13). Surgery was also associated with a lower risk of reintervention (1.4% versus 19.3%; OR 0.14, P = 0.04).

Conclusions:

Surgery may confer an early functional advantage to adults with humeral shaft fractures, but this is not sustained beyond 6 months. The lower risk of nonunion should be balanced against the higher risk of transient radial nerve palsy.

Level of Evidence:

Level I.