bluuebunny/crossref_metadata_2025 huggingface dataset:
Cooling and insulation design of power electronic transformers
Authors: Chen Guowen
Published: September 2023

In the case that the usage of power electronic transformers (PETs) has become a trend, research on minimizing the energy loss of PETs is imperative. Meanwhile, the miniaturization of PETs was considered a meaningful way to relief the problem to the maximum extent. And in the problems of miniaturization, the insulation design and the cooling-down design was considered the head of the problems because these two problems could result in an increase of energy loss, which is conflict with the goal of miniaturization. The basic requirement for insulation design is to keep the circuit from the damage of incidents like arc, which brought this job a status of the key to the miniaturization. But what made this trickier is that the design should also satisfy the demand of miniaturization. For the cooling-down design, a design could undertake the task but with smaller volume and lower cost would be favorable for users, but the change of circumstance could lead to different optimum design. Therefore, a study on these two fields is critical, in this essay, the insulation design would be firstly introduced and then the cooling-down design. Due to the status of the two problems mentioned above, the study showed in this paper would have a great value for the research and application of miniaturization of PETs.
Technology and limitation of electrification of transportation
Authors: Zhuo Zhuang
Published: September 2023

In the modern world, electric vehicles (EVs) are becoming more and more prevalent, and many individuals are beginning to consider getting one for their mobility. In comparison to traditional internal combustion engine vehicles, EVs are more environmental-friendly, have higher energy conversion efficiency and produce lower noise. However, in terms of electrification of transportation, EVs also have some inherent limitations. This paper provides an overview of electrification of transportation. First, this paper will focus on the related technologies such as motor drive technology, power electronic technology and battery management. In addition, the limitations of the electrification of transportation, include range anxiety, long charging time, charging station accessibility and unsatisfactory performances in extreme temperatures, will also be presented. Despite these challenges, EVs still exhibit promises for further development and will play a leading role in transportation electrification. Considering the technological factors will help address the issues and push the future development of EV forward.
Domestic and international development trends of broadband fiber amplifier
Authors: Liu Fanxiao , Li Xinye , Sun Haochen
Published: September 2023

In this era of information explosion, the improvement of communication capacity has become an urgent problem, and the improvement of transmission speed and the reduction of channel spacing are near the limit, so widening the available bandwidth of fiber optic transmission is the most feasible method. The research progress of fiber optic amplifiers is analyzed, and the outlook is presented. Researchers are working to find breakthroughs in C++ band, L++ band, and C+L band, starting with amplifiers materials, structures, and designs. The EDFA targeted C++ and L++ band have been widely studying these years while different types of amplifiers have been invented to simultaneously work on C+L band. Also, as quantum dot is introduced to design innovated fiber amplifier, more new amplifiers need to be invented to achieve better amplification. This paper presents the recent research results of the above-mentioned research directions, and the next goal of researchers is to stabilize all these amplifiers gain flatness and production implement ability.
Diverse sustainable methods for future jet engine
Authors: Zhang Shuo
Published: September 2023

With global concerns over CO2 emissions and climate change, the aviation industry is investing in renewable fuels and sustainable engines. Bio-Synthetic Paraffinic Kerosene (Bio-SPK) and hydrogen are two significant biofuels that can replace fossil fuels in jet engines. Biofuel is considered a sustainable fuel; it is possible to replace fossil fuel in jet engines. Bio-SPK is an aviation fuel made from plant-derived lipids and processed to have similar properties to traditional jet fuel. It offers significant emissions savings compared to Jet-A1 but is not widely available due to high production costs and limited feedstock availability. While it can improve fuel efficiency and reduce emissions, it has lower energy density than conventional aviation fuels, potentially reducing aircraft range or payload capacity. Hydrogen produces only water but requires careful extraction or manufacturing. Green hydrogen is carbon-neutral, grey hydrogen generates carbon, and blue hydrogen captures and stores carbon. However, most hydrogen is currently generated as grey hydrogen, which offers less environmental benefit than directly burning fossil fuels. This work provides an overview of current and future sustainable jet engine technologies.
Significant impacts of injection parameters on marine diesel engines
Authors: Zhu Hanzhe
Published: September 2023

Nowadays, over 90% of the shipping industry mainly relies on marine transportation. The ability of 2-stroke low-speed diesel engines to consume heavy fuel and even crude oil makes them occupy an important position in the main propulsion power market. Also, it is quite convenient for them to operate reversely, which is needed for the astern situation. Compared with other propulsion power sources such as gas turbines or electro-propulsion, low-speed diesel engines have relatively better part-load performance and long-time stability, making them stand out. Most importantly, their efficiency can reach up to 60% when combined with exhaust boilers and turbine-driven alternators. The majority of those advantages are gained from the delicately designed fuel injection system and the governor system. This article discusses 2-stroke low-speed marine diesel engines' fuel injection systems and how some important parameters influence engine performance. Future opportunities and key challenges in this exciting field are also highlighted.
Current status and prospects of actuator in robotics
Authors: Yuan Zehao
Published: September 2023

This paper presents an overview of the current status and prospects of actuators in robotics, focusing on various types of actuators and their unique characteristics, advancements in actuator technology, common applications, and challenges. The different types of actuators discussed include electromagnetic actuators such as geared drive motors and direct drive motors, hydraulic actuators, and pneumatic actuators. Selection criteria for actuators in robotics are also explored, considering factors like energy efficiency, control precision, and cost. The paper highlights recent advancements in miniaturization, energy efficiency, and control and precision of actuators, along with their applications in industrial, medical, service, and military robots. Limitations and challenges associated with these actuators, such as cost constraints, performance and reliability issues, are addressed. Finally, the paper delves into prospects and future developments in actuator technologies, emphasizing emerging trends like soft robotics and artificial muscles, electroactive polymers, human-robot interaction, exploration robots, and the integration of artificial intelligence, sensor fusion, and advanced control algorithms. The paper concludes by discussing the implications of these advancements for the future of robotics and related fields and suggesting areas for further research and development.
The design of high-energy-density Li-ion batteries
Authors: Luo Yihua
Published: September 2023

Future energy storage device research should focus on increasing energy density (ED). Over the past few decades, lithium-ion batteries (LIBs) have been commonly employed as high-performing energy storage systems. Due to the growing demands on the performance of LIBs in terms of size, weight, and energy storage, researchers continue to experiment with various methods to increase the ED of LIBs by adopting battery structures, novel materials, and systems. Before their actual deployment, however, a number of concerns, such as the issue of electrolyte instability under high voltage, still need to be resolved. In order to better understand the design of high ED lithium-ion batteries. This paper focuses on three key areas: compression of the proportion of inactive material, augmentation of the proportion of active materials, and mitigation or compensation of film formation losses of solid electrolyte interphase (SEI). With the development of LIB technology, it is anticipated that in the future, lithium-ion batteries will find usage in more applications, and their future will be even more promising.
SLAM-based technology to improve the impact of uneven illumination on minimally invasive surgery
Authors: Han Yuxuan
Published: September 2023

Due to developments in surgery, minimally invasive surgery (MIS) has become a common choice for surgical patients. Because of the small surgical incision in MIS, its postoperative effects will be less fat liquefaction, infection, splitting, numbness of the incision and weakness of the healing abdominal wall muscles compared to traditional surgery. However, many bottlenecks have been encountered in MIS, such as uneven illumination affecting the recognition of organ images. In other words, such problems are about improving the ability of Simultaneous Localization and Mapping (SLAM) to extract information about the environment. This paper summarises some relevant research on SLAM improvement methods. Scientists are now looking for more suitable methods for constructing maps of the human internal environment, including improvements on existing SLAM techniques. In the context of SLAM, what SLAM is and the history of SLAM is described. Traditional SLAM methods as well as SLAM improvement methods are also mentioned. Finally, its advantages and disadvantages are discussed, and its prospects are predicted.
The application of SLAM technology in indoor navigation to complex indoor environments
Authors: Hu Yifan
Published: September 2023

This paper reviews the application progress of Simultaneous localization and mapping (SLAM) in complex indoor environments. SLAM is a technology used to manufacture mobile robots and autonomous vehicle. It can achieve autonomous localization and mapping in unknown environments. In dealing with complex indoor environments, SLAM technology faces many challenges, such as missing local perspectives, detecting moving objects, constructing dense maps, and real-time requirements in large-scale environments. However, with the development of technology, more and more SLAM technologies are being applied to complex indoor environments, among which the fusion of multimodal vision and deep learning technology, enhanced camera positioning technology, and navigation algorithms based on intelligent platforms are currently relatively advanced technologies. This article will briefly introduce the main development process of SLAM technology in dealing with complex indoor environments and the application of deep learning technology. By utilizing this technology, map features can be extracted more accurately, objects can be recognized, and obstacle avoidance can be achieved. This provides a good development direction for SLAM technology.
Navigation system for oral surgery based on slam technology
Authors: Cen Chengen , Wang Hao , Wu Shiqi
Published: September 2023

As a combination of modern imaging technology, stereotactic technology, computer technology, and artificial intelligence technology, the surgical navigation system has been rapidly developed and applied in recent years. In recent decades, navigation systems have been used to aid in maxillofacial surgery, but rarely in the oral area. By comparing the applications of navigation systems in oral and maxillofacial surgery, we summarize their advantages and problems and list the advantages and disadvantages of the development process and methods of Simultaneous Localization and Mapping(SLAM). We propose to use tooth contours as natural markers to construct a model of AR oral structure, subtracting the operational time problems caused by making and using artificial markers. The AR structure model of the oral cavity was constructed, the method of applying SLAM technology to the oral surgery was proposed reasonably, and the method optimization scheme was proposed for the more complicated oral root canal surgery.
Endoscope 3D reconstruction based on ORB-SLAM
Authors: Zhang Baichuan
Published: September 2023

Minimal invasive surgery (MIS) is the mainstream trend in developing surgical technology. As the endoscope is a significant tool in the surgical process, whether it can track the inner cavity and realize accurate real-time 3D reconstruction has a vital impact on the smooth progress of MIS. However, there are still problems in the endoscopic environment, such as severe image distortion, the effect of lighting conditions, and the inability to extract lumen textures. Orinted fast and rotated brief simultaneous localization and mapping (ORB-SLAM) is currently a relatively advanced simultaneous localization and mapping (SLAM) method with better performance. The ORB-SLAM-based endoscope 3D reconstruction method can improve performance and overcome the challenge of endoscope 3D reconstruction. This paper will first introduce several existing endoscope 3D reconstruction methods based on ORB-SLAM and analyze the limitations and issues of these methods through their experimental results. Then the paper will explore the solutions to the defects in this method from other methods and compare the characteristics and the result of experiments. Secondly, through the summary of the above methods and the introduction of the integration of the ORB-SLAM-based methods and other current advanced technologies, the future development trend and huge development potential of ORB-SLAM-based endoscopic 3D reconstruction are introduced. This paper will be of profound affection to further improve the optimization and application of the ORB-SLAM-based endoscope 3D reconstruction method.
Convolutional neural network-based modulation recognition technique for communication signals
Authors: Zou Yunchao
Published: September 2023

The last decade has seen breakthroughs in communication technology. The increasingly complex signal transmission environment has placed higher demands on signal modulation recognition. Traditional modulation recognition approaches cannot guarantee satisfactory recognition accuracy. Fortunately, with the continuous advancement of deep learning algorithms, convolutional neural network-based communication signal modulation recognition techniques have become the mainstream of current research. Therefore, this paper first reviews the development history of signal modulation recognition techniques and introduces the concepts of signal modulation theory. It includes ASK, PSK and FSK modulation methods, which are common today. Subsequently, I analyze the principles of signal modulation recognition and the implementation method of CNN in modulation recognition. To further explore the shortcomings of CNNs, I propose two optimized models, the residual network model and the CLDNN model. After comparing the performance, the former has higher performance, but its computational complexity is higher while the latter takes into account the high recognition accuracy while still reducing the network parameters as much as possible to keep the complexity at a low level.
English text recognition technology and application analysis based on optical character recognition
Authors: Liu Shangwei
Published: September 2023

With the rapid development of artificial intelligence, it is gradually applied to more and more fields. Ais market and technological potential value are unpredictable, which involves interaction between Ai and humans. In addition, optical character recognition is one of the essential roles in the interaction between machines and humans. Recognition of human language from a machine can significantly increase the user's experience and potential efficiency. Hence, this paper will focus on analyzing todays Optical character recognition (OCR) techniques based on feature extraction and neural networks. This article first provides an overview of the important significance of English text recognition, and then selects two typical methods for overview. Then, comparative experiments are conducted on the above methods and their analysis is conducted. By comparing each technique, to decide the restriction and advantage, based on the analysis to conclude and make predictions in OCR optimization.
Design and research of train-centric autonomous control CBTC system
Authors: Guo Yichen
Published: September 2023

Existing CBTC systems suffer from a number of limitations, some of which include convoluted communication between the ground and trains, costly construction, and high costs associated with the installation of ground equipment. The purpose of this study is to further improve the operational efficiency of a train-centric autonomous CBTC system by analyzing the system design, control principles, and module functioning. The planning of ground and onboard equipment will be the main research objects of the novel system. When compared to conventional CBTC systems, the TACS architecture, most notably in the OC and train-train communication modules, changes the control mode from ground-centric to train-centric. This results in an increase in the overall efficiency of the system, and a new train operation scenario of the virtual coupling is introduced to increase the flexibility. The TACS architecture that was designed paves the way for the engineering advancement of the system and establishes the groundwork for it.
Research progress and application of spherical solar cell in solar car
Authors: Tang YingJie , Xiao XianJun
Published: September 2023

Along with the economic development of China, all industries have faced new opportunities. However, the fast development of the automobile industry has also negatively impacted environmental resources, such as petroleum resource consumption and environmental pollution. In order to protect the environment and travel green, this paper analyzes the progress of solar energy applied to cars as clean energy. First of all, this paper explains the working principle of solar cars and how to convert the collected solar energy into electric energy to store or provide kinetic energy for the car. Further, since the loss of air resistance of the car accounts for up to 60%, this paper analyzes the modeling and design principles of the solar car through aerodynamics. In addition, this paper focuses on the solar panel-related content, which is the core part of the solar car, puts forward and introduces the spherical solar cell not popular in China, and finally puts forward relevant suggestions for the pilot of the solar car. Reducing the kinetic energy loss caused by air resistance and improving the efficiency of solar energy conversion should be the focus of the future development of solar vehicles.
Research on environmental and resource benefits of offshore multifunctional power generation platform
Authors: Song Yingkai , Yu Bin , Zhang Yibin
Published: September 2023

With the development of science and technology, land resources have been over-exploited and cannot meet the needs of development, so people gradually turn to the ocean for development. The ocean not only occupies two thirds of the earth, but also contains a variety of rich resources. They not only meet people's huge demand for energy, but also most of the resources in the ocean are green and renewable energy, which not only reduces the cost of resource development to a certain extent, but also reduces the impact on the environment in the development process. An offshore multifunctional power generation platform is designed in this paper. The impact of chemical substances produced when the anti-corrosion coating on the surface of the platform on the Marine environment is analysed. Compared with the construction cost of offshore resources development, the reduction of carbon emissions and the impact of offshore platforms on the marine environment were studied respectively. The final cost per kw of the platform is at the average level of an offshore power generation project. Carbon emission reduction is much less than traditional onshore power generation projects. The pollution to the marine environment is also within the provisions of the marine pollution index.
Design of a landing gear system for UAV in complex ground environments
Authors: An Nan , Liu Jipeng , Zhou Ziqi
Published: September 2023

The current UAV technology is developing rapidly and there are various UAV concepts such as hybrid vertical take-off and landing (VTOL) UAV in addition to traditional UAV. The main solution direction of these UAV concepts lies in the compatibility of vertical take-off and landing and long endurance and high load. However, in some complex environments, such as post-earthquake debris, or uneven mountainous terrain, UAV take-off and landing still has great difficulties. Therefore, this paper designs a landing gear that can adapt to complex ground conditions and its corresponding landing algorithm based on DJI's publicly available UAV model. First, a movable landing gear controlled by a linear actuator is used to adapt to a variety of complex terrains. Then, we designed a UAV foot similar to a 3D carved needle with oil-hydraulic cushioning to make it fit more to the complex ground and stand stably on the ground. Then, we obtained the mathematical relationship between the linear actuator and the landing gear moving end based on the simplified mathematical model of the UAV model, and applied it in the subsequent landing algorithm. And then, in detecting the landing point, we use the column coordinate system for coordinate simulation while the algorithm written in C language to get the most suitable UAV landing point. Finally, we have simulated the UAV landing using MATLAB and the results show the high engineering value.
Research on HOG-SVM pedestrian detection method based on FPGA
Authors: Lin Yanghang
Published: September 2023

At present, pedestrian detection technology has become a research hotspot in the field of image processing and computer vision, and has developed to open up a wide range of application prospects. This paper gives a comprehensive introduction to the algorithm and FPGA implementation of object detection algorithm including HOG and SVM. In the field of pedestrian detection, HOG-SVM pedestrian detection method based on FPGA has unique advantages compared with other various object detection methods. In the current research, this implementation method usually has a detection accuracy rate of more than 95% and a detection speed of more than 30 frames/s for the INRIA data sets, which perfectly meets the pedestrian detection requirement. FPGA with its parallel structure and a large amount of programmable logic sources greatly improve the HOG-SVM to perform real-time pedestrian detection. With the development of hardware acceleration and detection algorithms, more and more pedestrian detection methods with better performance will appear in the future.
Performance comparison between LQR and PID controllers for two-wheeled self-balancing vehicle
Authors: Mai Zhonghao
Published: September 2023

The two-wheeled balancing vehicle is an energy-efficient and eco-friendly transportation tool used for short distances. Both motors of the vehicle are required both motors to be regulated to maintain stability, and modern control methods have been applied to the system. In this paper, the effectiveness of traditional PID control and modern LQR control in the context of a two-wheeled balancing vehicle is evaluated. The motion principle of the vehicle is analyzed, and a corresponding dynamic model is established. PID and LQR control schemes are designed according to the model and the performance of the angle and speed of the vehicle is compared in MATLAB simulation. The two kinds of control performance are evaluated, offering theoretical feasibility verification for the application of two-wheeled balancing vehicles. It has been found that the LQR controller has better performance than the PID controller. LQR has a shorter response time and smaller steady-state error in controlling speed, and there is still room for improvement for both controllers.
Nationwide Effect of COVID-19 on Cases Performed During Pediatric Orthopaedic Surgery Fellowship Training in the United States
Authors: Silvestre Jason , Thompson Terry L. , Flynn John M.
Published: September 2023

Introduction:

The COVID-19 pandemic negatively affected surgical training in the United States. We hypothesized that reported case volume during pediatric orthopaedic surgery fellowship training would decrease markedly during the 2019 to 2020 academic year, which corresponded with the COVID-19 outbreak.

Methods:

The Accreditation Council for Graduate Medical Education provided nationwide case logs for accredited pediatric orthopaedic surgery fellows (2017 to 2021). Annual reported case volumes were extracted and summarized as means ± SD. Parametric tests were used to compare annual case volumes.

Results:

A total of 149 pediatric orthopaedic fellows from 23 accredited fellowships were included. A 16% year-over-year (YoY) decrease was noted in the reported case volume during the 2019 to 2020 academic year (238 ± 80 vs. 255 ± 60, P < 0.001). Nonacute case categories had the most notable YoY percentage decreases: Soft Tissue: Transfer, Lengthen, Release (−42%); Clubfoot (−34%); and Foot and Ankle Deformity (−31%). Acute case categories had the most notable YoY percentage increases: Trauma Lower Limb (12%) and Trauma Upper Limb (10%). A subsequent 42% YoY increase was noted in the reported case volume during the 2020 to 2021 academic year.

Discussion:

A 16% YoY decrease was noted in the reported case volume during the 2019 to 2020 academic year, which corresponded to widespread economic shutdowns during the initial COVID-19 outbreak. Nonacute cases experienced the greatest negative effect. The results from this study may inform the orthopaedic surgery community on the effect of future national emergencies, such as viral outbreaks.
Recommendations for the Improvement of China's Counter-sanctions Legal System under the Guidance of the Anti-foreign Sanctions Act
Authors: Hou Xingyou
Published: September 2023

In recent years, the United States has regarded China as its most important strategic competitor in the future, and has illegally interfered in China's internal affairs in the political, economic and trade, scientific and technological fields, in blatant violation of the basic principles of international law, and has frequently abused undue unilateral sanctions against party and government organs, multinational enterprises, scientific research institutes and other institutions within China's borders, to the serious detriment of China's national interests, as well as the interests of the relevant organizations and individuals. For this reason, the National People's Congress has enacted and promulgated the Anti-Foreign Sanctions Law, which adopts "defensive" and lawful countermeasures at the legislative level against unilateral sanctions against foreign countries for their violent interference in China's internal affairs, fully utilizes international law as a means to safeguard China's national security and interests, and protects the lawful rights and interests of enterprises and individuals going to the sea, and also links up with other laws and regulations on anti-sanctions that have already been issued in the field of anti-sanctions. Starting from the legal normative documents in the field of counter-sanctions, such as departmental regulations, and combining them with the actual economic development of China, we will find effective legal countermeasures and suggestions for solving the worsening unilateral sanction dilemma faced by China, and establishing a counter-sanctions implementation mechanism with clearly defined powers and responsibilities, a sound system, and precise law enforcement.
Research on the Impact of ESG Information Disclosure on the Green Innovation Performance of New Energy Enterprises under the Background of "Double Carbon"
Authors: Xu Can , Wu Tengfei , Zhang Haoyang , Bian Junjie , Wang Jin
Published: September 2023

Under the background of "dual carbon", ESG performance is an important indicator to measure the sustainable development of the green economy of enterprises. ESG information disclosure is the behavior of enterprises to disclose information to internal information users and external stakeholders, and it is the guarantee for enterprises to improve internal risk governance and strengthen external risk management and control. This paper will analyze the status quo of ESG information disclosure of new energy companies on the basis of elaborating the relevant content of ESG information disclosure, and study the impact of ESG information disclosure on green innovation performance of new energy companies. ESG information disclosure has a more significant positive impact on the green innovation performance of new energy companies.
The Construction of Labor Education and Training System in Higher Vocational Colleges under the Background of the New Era
Authors: Cheng Lei , Lu Lin
Published: September 2023

This article proposes four suggestions for constructing a labor education and training system based on the current situation of labor education in vocational colleges. These suggestions can provide reference for the construction of the current labor education and training system in vocational colleges.
Research on Teaching Strategies of Higher Vocational Labour Education Courses based on OBE Concept
Authors: Luo Hongyan
Published: September 2023

Labour is an important part of building an education system for the comprehensive cultivation of morality, intelligence, physical fitness, aesthetics and aesthetics. Labour education is the fundamental way to cultivate talents in higher vocational colleges. This paper analysed the connotation of labour education, sorted out the basic principles of the OBE concept in the reform of higher vocational professional courses. Taking the higher vocational telecommunication major as an example, the teaching implementation strategy of the labour education practice course under the concept of OBE is explored around the determination of the expected teaching results and teaching subjects of the labour education course, the design of teaching carriers and teaching programmes, the construction of the teaching practice environment and the teaching evaluation system.
Research on the Path of Urban Buildings’ Emission Reduction under the "Dual Carbon" Goal
Authors: Ni Bijun
Published: September 2023

Construction industry in China has always been a "high-carbon" industry, based on China's goals of reaching "carbon peak" in 2030 and "carbon neutrality" in 2060, it is particularly important to carry out low-carbon transformation of traditional buildings. Under the background of the "dual carbon" goal, this paper analyzes the whole life cycle of urban buildings and explores the four stages of preparation, construction, operation and recycling to find possible problems and solutions in the development of low-carbon green buildings. Low-carbon, environmentally friendly green buildings are the development trend of urban buildings, which can meet people's growing needs on the one hand, and accelerate the transition of original urban buildings to green buildings on the other hand, ensuring the smooth realization of China's "dual carbon" goal.
Research on the Application of Composite Ecological Green Ring Construction Strategy in Old City Renewal
Authors: Tang Jing , Zhang Qiuwan
Published: September 2023

In order to beautify the living environment of urban blocks and improve the quality of urban landscape space design, this paper analyzes the current landscape status of old city blocks based on the research of landscape environment problems in the renewal of old urban areas, and finds that the landscape of old city blocks has the characteristics of fine landscape space, closed landscape, and poor environmental quality of public landscape space. Dig deep into the importance of building a network and ring landscape system in the process of old city renewal, that is, to meet the spiritual needs of residents around the renewal area, improve the level of art and culture of the entire city, and create a better living environment. The strategy of improving the spatial environment of the neighborhood by building a composite ecological green ring is proposed, which provides interactive space places and infrastructure for urban residents to communicate and communicate, so as to achieve the effect of "scenery and its use, and green ring people's walking". To meet the pursuit of green and healthy living environment of modern people, it also connects the urban historical context in the old city, and at the same time injects new vitality into the neighborhood life, creating favorable environmental and spatial conditions for the better development of the city and the better life of the people.
ENSINO REMOTO DE CIÊNCIAS UTILIZANDO O WHATSAPP: CONSTRUÇÃO DE UM BIODIGESTOR COMO MÉTODO EDUCACIONAL NA PEDAGOGIA DA ALTERNÂNCIA
Authors: Carvalho Franciely Lorenzon , De Souza Gisele Ávila , Terra Vilma Reis , De Oliveira Márcia Gonçalves , Battestin Vanessa
Published: September 2023

Este trabalho apresenta um relato de experiência desenvolvido na Educação Básica, com estudantes do 9º ano do Ensino Fundamental de uma Escola Família Agrícola, no município de Alfredo Chaves, que utiliza a Pedagogia da Alternância como modalidade de ensino para a Educação do Campo. O objetivo do trabalho foi desenvolver uma proposta que contemplasse conteúdos estudados em sala de aula e sua aplicabilidade, propondo melhorias à comunidade escolar. A proposta didática envolveu a construção de um biodigestor para o aproveitamento dos resíduos das residências dos educandos para a produção de energia, por meio do biogás e a fabricação de um biofertilizante. A metodologia ativa baseada em projetos possibilitou aos educadores trabalharem a sala de aula invertida, utilizando o WhatsApp como tecnologia de compartilhamento de dados e comunicação. O trabalho realizado possibilitou aos estudantes ultrapassar os limites que vão além dos conteúdos curriculares, uma vez os mesmos, foram protagonistas na construção de saberes integrados à diversas disciplinas.
Türkiye’de Sendikalar ve Sanat: Açmazlar ve Olanaklar
Authors: MAKAL Ahmet , KAHRAMAN ERSÖZ Özge , YÜCEL Orhan Ürüncan
Published: September 2023

Sanat bir yönüyle toplumsal yaşamı ve sorunlarını yansıtıcı bir karakter taşırken, diğer yönüyle de toplumsal farkındalık yaratma işlevine sahiptir. Sosyal politika açısından da sanat, geçmişten günümüze yaşanan sorunları sanatçının düşünsel-duygusal prizmasından ve sanatsal kurgusundan geçmiş biçimiyle bugüne ve geleceğe yansıtıyor. Diğer taraftan ise taşıdığı estetik değerlerle ve insan varlığının aklî ve duygusal yönlerine hitap etme potansiyeliyle, bu alana yönelik bir bilinç ve farkındalık yaratıyor, kamuoyunu ve kitleleri bu doğrultuda etkiliyor. Bu yönüyle sanatın toplumu, kamuoyunu ve karar alıcıları etkileyerek, sosyal mücadelelere ve bizatihi işçi sınıfı mücadelesine güç katması da söz konusu. Sanatsal faaliyetler, işçiler açısından da onları çalışma hayatına ve sendikal konulara ilişkin bilgilendirme, sınıf bilinçlerini geliştirme ve örgütlerine bağlama gibi amaçlar yanında, onların yaşamlarını zenginleştirme ve insanî-kültürel gelişmelerine katkıda bulunma potansiyelini taşıyor. Toplumsal düzeyde sanatın paylaşımı, işçilerin ulusal gelirden olduğu kadar, ulusal kültürden de pay almalarını mümkün kılacak, onların yaşam kalitelerini yükseltecektir. İnsan hakları bağlamında da, herkes gibi, işçilerin de sanattan yararlanma hakları bulunuyor. Bu açılardan bakıldığında, emek örgütü olarak sendikaların sanatsal etkinlikleri ayrı bir anlam ve önem kazanıyor. Sendikalar, dünya ölçeğinde, sendikacılık hareketinin başlangıcından bu yana ülkeden ülkeye ve dönemden döneme değişen boyutlarda, sanata ilgi duymuş ve bu alanda da etkinliklerde bulunmuştur. Çalışmamız, Türkiye’de de birçok işçi sendikasının sanat bağlantılı değişik etkinlikleri olduğunu ortaya koyuyor. Ancak, bu etkinliklerin hem yetersiz olduğu ve daha çok edilgen biçimlerde gerçekleştiği hem de bu etkinlikleri gerçekleştiren sendikaların sayıca çok az olduğu görülüyor. Sendika yöneticileri ve uzmanlarıyla yapılan derinlemesine görüşmelere dayanan saha araştırmamızla, Türkiye’de bu alandaki temel sorunları ve açmazları saptamak ve bunların aşılabilmesi için yararlı olabilecek öneriler ortaya koymayı amaçlıyoruz. Sendikaların sanatsal etkinliklerinin nicel olarak arttırılıp, edilgen biçimlerden etken ve üyelerin daha çok katılımını sağlayacak biçimlere dönüştürülmesi, bunun için sendika yöneticilerinin farkındalıklarını artırmak ve sendika uzmanlarına düşen sorumluluk ve görevler, sendikalarda bu etkinliklerle ilgili özel birimlerin oluşturulması ve buralarda uzman kişilerin istihdam edilmesi yoluyla kişisellikten kurumsallaşmaya geçiş; saha çalışmamızda irdelediğimiz ve sorunların aşılması için önerilerde bulunduğumuz temel konular arasındadır. Çalışmamızda, sendikaların izlenen ekonomik politikalar ve içinde bulundukları hukukî/fiilî sınırlamalar çerçevesinde güç kaybettikleri, maddi olarak zayıfladıkları bir dönemde bunları gerçekleştirmenin zorlukları ile sendikaları kuşatan toplumsal koşulların sanatsal etkinliklerin özgür biçimde yapılması üzerindeki sınırlandırıcı etkileri üzerinde de ağırlıklı olarak durulmaktadır
Pandemide Enformel İlişkiler ve Güvencesiz Çalışma: Müzisyen Emeğinin Sahadaki İzleri
Authors: ERSÖZ Batuhan
Published: September 2023

Çalışma yaşamına ilişkin birçok nokta Covid-19 salgınıyla birlikte dönüşmüş, salgının farklı ekonomik sektörlerdeki yansımaları emek açısından sorunlu bir tablo ile karşılaşılmasına neden olmuştur. Bu alandaki etkiler bütün sektörler için homojen bir nitelik sergilememiş, özellikle enformel çalışmanın yaygın olduğu belirli hizmet alanları için salgının emek üzerindeki etkisi güvencesiz çalışma pratikleri ve sosyal koruma mekanizmalarının dışında konumlanma neticesinde çok daha yıkıcı olmuştur. Bu çalışma çerçevesinde de yarı-yapılandırılmış görüşmeler aracılığıyla yaratıcı sektörler içinde faaliyet gösteren müzisyenlerin salgına bağlı olarak değişen çalışma ilişkilerine ve koşullarına odaklanılmaktadır. Çalışma neticesinde pandeminin, müzisyenler açısından, çoğunlukla enformel çalışmanın sektörel bir norm olması sonucunda deneyimlenen ancak görünmez olan güvencesizliği net bir şekilde açığa çıkardığı görülmektedir. Çalışmanın enformel niteliği nedeniyle sosyal koruma mekanizmalarının dışında konumlanma müzisyenlerin salgın sürecinde yaşadığı iş ve gelir kaybına ilişkin sorunların derinleşmesini beraberinde getirmektedir. Bununla birlikte müzisyenler tarafından pandeminin etkilerini azaltmak amacıyla dijitalleşme ekseninde yeni çalışma ve iletişim biçimleri de kurgulanmaktadır. Sonuç olarak pandemi süreci müzisyenler özelinde “sanatçı” olmak ile “emekçi” olmak arasındaki geçişkenliği net bir şekilde ortaya çıkarmakta, enformel ilişkiler ekseninde şekillenen çalışma yaşamı, müzisyenler açısından güvencesizliği bir ortak kesene dönüştürmektedir
Non-alcoholic fatty liver disease: An emerging epidemic of global importance
Authors: Mubarak Muhammed
Published: September 2023

Nonalcoholic fatty liver disease (NAFLD), a condition that affects 30% of the world’s population, is one of the leading causes of chronic liver disease (CLD) and liver transplantation. Although exact data are not available in many developing countries, its prevalence is increasing at alarming rates in many studies from these countries. The rising prevalence of NAFLD has paralleled the increasing rates of obesity and metabolic syndrome. Hence, more recently, it has been renamed metabolic dysfunction-associated fatty liver disease (MAFLD). Since several studies have demonstrated an association between NAFLD and an increased risk of cardiovascular events, it has been proposed that NAFLD may be an independent risk factor for atherosclerosis. However, the data is conflicting in this regard and more studies are needed. In this review, we discussed the epidemiology, risk factors, clinical presentation, diagnosis, classification, and complications of NAFLD to help increase awareness among the medical community of this looming epidemic of metabolic liver injury.
Daño Colateral en el Tratamiento de Pacientes con COVID-19.
Authors: Isea Dubuc José Octavio , Morillo Silvera Luis Carlos , Carballo Ocanto Martín , Gómez Contreras María Francisca , Rojas Romero Yenifer Yameli , Figueredo Colmenarez Carmen Yesenia , Rebolledo Tovar Joan Manuel , López Escalante María Carolina
Published: September 2023

A finales del año 2019 se desarrolla la pandemia de COVID-19, una enfermedad infecciosa causada por un virus previamente no identificado, que produjo consecuencias catastróficas a nivel mundial.  Los reportes epidemiológicos mostraron que después de adquirir la infección, la mayoría de las personas experimentan enfermedad leve sin complicaciones, sin embargo, algunos de los pacientes, requirieron hospitalización. Durante los años 2020 a 2022, fueron evaluados en nuestra institución cerca de 1800 pacientes. Dentro del arsenal terapéutico, fueron utilizados equipos de ventilación mecánica invasiva y no invasiva y medicamentos que incluyeron: antivirales, oxígeno, sedantes, antibióticos, anticoagulantes, protectores gástricos, analgésicos, hipolipemiantes, antiarrítmicos, diuréticos, hipotensores, antipsicóticos, analgésicos, hemoderivados, colchicina,  esteroides, fibrinolÍticos y anticuerpos contra interleukina 6: tocilizumab, suplementos vitamínicos entre otros. De igual manera fueron utilizados, catéteres venosos y arteriales, tubos endotraqueales, sondas nasogástricas y de aspiración, tubos de drenaje, sondas vesicales y colocación en posición prona en aquellos pacientes con hipoxemia severa. La terapéutica  no estuvo exenta de complicaciones. Nuestro objetivo es hacer del conocimiento a la comunidad médica de algunos pormenores de estos eventos ocurridos tanto en la sala de hospitalización como en la unidad de cuidados intensivos COVID, no atribuidos a efectos directos perjudiciales del virus, sino, a las consecuencias de los tratamientos aplicados.
CING 42. Derby Museum
Authors: Steward Donald I.
Published: September 2023

Geological public service: permanent display closed at present, new displays planned for new branch museum; access to reserve collection; one specialist curator; identification service; NSGSD record centre for Derbyshire. Geological collections: c.8,500 specimens; good local coverage for rocks, minerals and fossils, also maps, manuscripts and photographs; condition mainly good; systematically stored and much of collection on MDA cards; major strength in British 'marbles'; cited fossils. July 1986....
CING 49. Hertford Museum
Authors: Steward Donald I.
Published: September 2023

Geological public service: permanent display (but no labels); access to reserve collection; no specialist curator; no identification service; not a NSGSD record centre. Geological collections: c.5,000 specimens; rocks, minerals and fossils, also books; condition reasonable; not easy to locate, poor records. December 1986....
CING 64. Cragside (National Trust). Morpeth
Authors: Steward Donald I.
Published: September 2023

Geological public service: permanent display (one case); access to reserve collections; no specialist curator; limited identification service; not a NSGSD record centre. Geological collections: c.200 specimens; rocks and minerals; condition good; specimens not detailed. August 1986....
Lost & Found: 164. Mary Anning (1799-1847) of Lyme Regis
Authors: Torrens Hugh
Published: September 2023

Hugh Torrens (Dept. of Geology, The University, Keele, Staffs. ST5 5BG) is still in search of material collected by Mary Anning. The initial plea only produced one reply and this certainly cannot be the full extent of information available. If you know of any reasonably documented material from Lyme Regis between 1800-1850 it is possible that it could have been collected by Anning and HST would be interested in hearing about it. Please inform HST of such specimens - you never know, you may be the proud possessor of material of great historical significance....
Lost & Found: 198. Richard W. Banks (fl. 1855-70)
Authors: Steward Donald I. , Torrens Hugh S.
Published: September 2023

In his Monograph of British Fossil Crustacea (1866-78) H. Woodward mentions on page 96 that 'It was in 1854 or the commencement of 1855 that my friend Mr Richard Banks, of Ridgebourne, Kington [Herefordshire], first directed my attention to the remarkable collection of fossils he had obtained from several localities in that neighbourhood.' Cleevely lists Banks, R.W. and Banks, Richard under separate headings and notes that the former lived in Ludlow whilst the latter lived at 'Richbourne, Kington, Hertfordshire'. Parts of the Banks, R.W. collection of Old Red Sandstone fishes are listed as being at the BM(NH) - being specimens transferred from Ludlow Museum in 1947 - and at the Manchester Museum. The Banks, Richard fossil collection...
CING 8. Broxbourne Museum, Hoddesdon
Authors: Steward Donald I.
Published: September 2023

Geological public service: permanent display (very small); no specialist curator; no identification service; not a NSGSD record centre. Geological collections: c.200 specimens; minerals and fossils; Pleistocene material dehydrating; not easy to locate, records poor; major strength in local Pleistocene vertebrates. April 1986....
De historisering van (digitale) surveillance
Authors: Leloup Pieter
Published: September 2023

The historicization of (digital) surveillance – Photography as a means of surveillance and control (late 19th and early 20th century)

This article describes the first applications of photography as a practice and technique for police surveillance during the late nineteenth and early twentieth centuries. It explores how, through the growing use of photography in law enforcement, the criminal subject was increasingly followed, registered, classified and studied. The article reveals that photographic representations and surveillance shifted from the criminal body (mug shots) to abstract data (fingerprints). However, through describing the history of surveillance, the paper shows that also important patterns of continuity with contemporary practices of (digital) surveillance exist, in particular regarding the cultural motivations underpinning its trajectory and use of technologies.