bluuebunny/crossref_metadata_2025 huggingface dataset:
Fomentando el uso de biofertilizantes a través de la cultura organizacional
Authors: Leal Rodríguez Erika , Moya Amaya Andrés , Lay De León Rosa , Acevedo-Urquiaga Ana
Published: September 2023

Faltando ocho años para medir el cumplimiento de los Objetivos de Desarrollo Sostenible (ODS), se encuentra que la dificultad para cumplir la agenda proviene de aspectos como la falta de apropiación por parte de varios agentes económicos, o simplemente el desconocimiento de estos. Sin embargo, la disrupción de una crisis global sanitaria junto a sus impactos negativos causados por el covid-19, y la colaboración a disminuir los impactos del virus desde las propuestas de los ODS, no es un asunto que deba ser indiferente para cualquiera de los ámbitos sociales conocidos. Desde un punto económico y financiero, la desestabilización del sistema a causa del confinamiento y su notoria afectación al consumo sigue siendo difícil de revertir. Asimismo, el masivo cierre temporal y/o definitivo que presentaron millones de empresas a nivel mundial, la automatización de las actividades y la reducción absoluta de la empleabilidad trajeron el inminente aumento de los indicadores de pobreza en todos los territorios. Desde lo social, además de los cambios de hábitos y la pérdida de personas, las características del virus obligaron a adquirir un nuevo modelo de relaciones interpersonales. A su vez, si se revisa lo ambiental el inicio de la pandemia pareció traer beneficios, pero con el paso a una nueva normalidad y el uso desmedido de elementos de bioseguridad, lo positivo pasó rápidamente a ser negativo. Esto marca una época sin precedentes donde es prioritario encontrar soluciones que integren el anhelado objetivo económico, con las metas sociales y ambientales en pro del desarrollo sostenible. A partir de dicha necesidad nace una estrategia para el sector empresarial a través de la correcta disposición de residuos orgánicos aprovechables, que genera biofertilizantes, producto de una adaptación a la cultura organizacional. La correcta aplicación de esta iniciativa puede generar beneficios económicos a corto plazo, ambientales en el mediano, así como sociales y culturales a largo plazo, debido a que la apropiación por parte del trabajador es el pilar de este programa.
Análisis del estrés financiero y su incidencia en la productividad dirigido a administradores o propietarios de las pymes en Quito
Authors: Salazar Jácome Martha , Ortega Naranjo William , De la Torre Guzmán José , Pérez Manosalvas Héctor
Published: September 2023

El estrés financiero es una condición que afecta a los propietarios o administradores de las empresas por la falta de liquidez y estabilidad económica para hacer frente a sus obligaciones financieras, comerciales, laborales, entre otros. Esto puede tener un impacto directo en la salud de las personas, detonando efectos como ansiedad y depresión, o el agravamiento de condiciones cardiacas y gastrointestinales. El presente artículo pretende describir los niveles de estrés financiero en las pequeñas y medianas empresas (pymes) de la ciudad de Quito, Ecuador, y determinar si afecta (o no) en la productividad de las empresas. La finalidad es diseñar a futuro un manual con datos o tips financieros y legales, lo cual dará un punto de reflexión a los agentes involucrados para la toma de decisiones. Asimismo, aplica la metodología bibliográfica y documental, así como un cuestionario basado en la escala Experf. De esta manera, fue posible medir desempeño financiero, desempeño estratégico y satisfacción frente a su actividad y presentar la información procesada y analizada. Lo anterior para dar a conocer a las empresas la estrecha relación que existe entre los niveles de estrés que enfrentan gerentes y propietarios de las pymes y cómo influye en su productividad en la ciudad de Quito, para que incorporen criterios de control y reducción del estrés financiero.
Desarrollo empresarial
Authors: Aizaga Villate Miguel , Arias Ronquillo Carlos
Published: September 2023

El conocimiento y procesamiento de big data de las empresas es un factor que permite hacer predicciones y tomar decisiones que posibiliten el crecimiento sostenido y el desarrollo empresarial. En este sentido, el propósito del artículo es describir la realidad de los sectores productivos de manufactura, minería, comercio interno y servicios en el territorio ecuatoriano, con la finalidad de considerar su comportamiento a través del tiempo en variables como ventas totales, empleo y masa salarial. Adicionalmente se pretende correlacionar estas variables con la inversión en Tecnologías de la Información y las Comunicaciones (TIC) para determinar el impacto o la asociación entre ellas. Para recopilar información se utilizó como fuente las estadísticas del Instituto Nacional de Estadística y Censos (INEC), que compilan big data a nivel nacional y que este estudio procesa mediante regresión lineal y el coeficiente de correlación de Pearson. Como conclusión se obtuvo que el sector del comercio es el que mayor volumen de ventas presenta, mientras que el sector de los servicios es el que representa la mayor magnitud en el empleo y en la masa salarial. Respecto a las correlaciones es de destacar que la inversión en TIC tiene la mayor asociación con el crecimiento del empleo y la masa salarial, y esta menos asociado con las ventas. Además, se pudo determinar que no existe una asociación alta entre las ventas y el volumen de empleos y masa salarial.
SOSYAL MEDYADAKİ POLİTİK PAZARLAMA FAALİYETLERİNİN ZONGULDAK BÜLENT ECEVİT ÜNİVERSİTESİ ÖĞRENCİLERİ ÜZERİNDEKİ ETKİSİNE YÖNELİK BİR ÇALIŞMA
Authors: ÇAVUŞOĞLU Hüseyin , ASLAN Büşra
Published: September 2023

Sosyal medya, artık günümüzde demokratik hayatın önemli güçlerinden biridir. Politik pazarlama ise seçimlerde, seçmen tercihinde etkili unsurlardandır ve siyasal partilerin seçim başarısı, politik pazarlama ile doğrudan bağlantılıdır. Türkiye’de seçmenlerin önemli bir bölümünü gençler oluşturmaktadır. Çalışmanın amacı, Zonguldak Bülent Ecevit Üniversitesi (ZBEÜ) öğrencilerinin, oy verme tercihinde sosyal medyadaki politik pazarlama faaliyetlerinin etkisini ortaya koymaktır. Bu bağlamda ZBEÜ’de okuyan 392 öğrenci ile bir anket çalışması yapılmıştır. Öğrenciler, oy verme tercihinde, sosyal medyadaki politik pazarlama faaliyetlerinden az ve orta derecede etkilenmektedir. Ayrıca, öğrenciler, sosyal medyada tartışma ve paylaşımda, çekimser davranırken, %57,4’ü sosyal medyada siyasi reklamları izlemekte ve %45,6’sı seçim kampanyalarını sosyal medyadan takip etmektedir. Elde edilen bir diğer önemli sonuç da öğrencilerin oy verme tercihinde "parti liderlerinin sosyal medyadaki destekçi sayılarına" en fazla önem verdiğidir.
Assessing the data challenges of climate-related disclosures in european banks. A text mining study
Authors: Moreno Ángel Iván , Caminero Teresa
Published: September 2023

The Intergovernmental Panel on Climate Change (IPCC) estimates that global net-zero should be achieved by 2050. To this end, many private firms are pledging to reach net-zero emissions by 2050. The Climate Data Steering Committee (CDSC) is working on an initiative to create a global central digital repository of climate disclosures, which aims to address the current data challenges.

This paper assesses the progress within European financial institutions towards overcoming the data challenges outlined by the CDSC. Using a text-mining approach, coupled with the application of commercial Large Language Models (LLM) for context verification, we calculate a Greenhouse Gas Disclosure Index (GHGDI), by analysing 23 highly granular disclosures in the ESG reports between 2019 and 2021 of most of the significant banks under the ECB’s direct supervision. This index is then compared with the CDP score. The results indicate a moderate correlation between institutions not reporting to CDP upon request and a low GHGDI. Institutions with a high CDP score do not necessarily correlate with a high GHGDI.
PENGARUH PERTUMBUHAN PENJUALAN, KEBIJAKAN UTANG DAN LIKUIDITAS TERHADAP AGRESIVITAS PAJAK
Authors: Azzahra Khoirunnisa
Published: September 2023

In optimizing tax collection there are many obstacles, one of which is the form of taxpayer non-compliance in paying taxes. The phenomenon of tax evasion and other tax aggressiveness in Indonesia is still rife in various business sectors. The aim of this study was to determine the effect of sales growth, debt policy, and liquidity on tax aggressiveness in energy sector companies listed on the Indonesia Stock Exchange (IDX) in 2016 until 2021. This research uses a type of quantitative research with an associative method with a population of 66 companies and a sample of 5 companies. Determination of the sample using the passive sampling method, the type of data used is secondary data with data analysis using the panel data regression model with the help of the eviews 9 application. Based on the test results it was found that, sales growth no effect on tax aggressiveness, debt policypositive effect on tax aggressiveness, liquidity has no effect against tax aggressiveness.
KOMITE AUDIT DAN KREDIBILITAS PENGUNGKAPAN CSR: BUKTI DARI PERUSAHAAN PERTANIAN DI BURSA EFEK INDONESIA
Authors: Helmaini Mesi , Azmi Zul , Aristi Mentari Dwi
Published: September 2023

This study aims to examine and analyze the influence of independent audit committees, audit committee financial expertise, frequency of audit committee meetings and audit committee gender in increasing the credibility of CSR disclosure: in agricultural companies on the Indonesia Stock Exchange. While the sample in this study used purposive sampling with a total sample of 41. The type of data used in this research is quantitative data in the form of secondary data with collection techniques using documentation. The data analysis technique uses multiple regression and is tested using the t test. The results of this study indicate that independent audit committees, audit committee financial expertise, frequency of audit committee meetings and audit committee gender in increasing the credibility of CSR disclosure: in agricultural companies on the Indonesia Stock Exchange.
PENGARUH LIKUIDITAS, LEVERAGE, DAN AKTIVITAS TERHADAP NILAI PERUSAHAAN DENGAN PROFITABILITAS SEBAGAI VARIABEL INTERVENING PADA PERUSAHAAN SUB SEKTOR FARMASI YANG TERDAFTAR DI BURSA EFEK INDONESIA (BEI) PERIODE 2017 – 2021
Authors: Binastuti Sugiharti , Intan Septian Putri
Published: September 2023

Perusahaan farmasi adalah sub sektor perusahaan manufaktur yang memiliki peran penting bagi keberlangsungan perekonomian negara, karena itu perusahaan ini memerlukan dana eksternal yang bersumber dari investor untuk dapat terus berkembang. Hal ini membuat perusahaan perlu menjaga nilai perusahaan supaya dapat menarik minat investor untuk berinvestasi yang dapat ditentukan melalui berbagai faktor. Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh likuiditas, leverage, dan aktivitas terhadap nilai perusahaan dengan profitabilitas sebagai variabel intervening pada perusahaan sub-sektor farmasi yang terdaftar di Bursa Efek Indonesia periode 2017-2021.   Data bersumber dari data sekunder yang diperoleh dari laporan tahunan yang dipublikasikan di Bursa Efek Indonesia dan situs resmi perusahaan. Pemilihan sampel menggunakan metode purposive sampling yang menghasilkan 40 data sampel dari 8 perusahaan tercatat. Alat analisis yang digunakan adalah uji regresi linier berganda, uji hipotesis, dan analisis jalur.   Hasil penelitian menunjukkan bahwa variabel likuiditas dan leverage berpengaruh terhadap profitabilitas, sedangkan aktivitas tidak berpengaruh terhadap profitabilitas. Variabel likuiditas dan leverage tidak berpengaruh terhadap nilai perusahaan, sedangkan aktivitas dan profitabilitas berpengaruh terhadap nilai perusahaan.   Hasil penelitian juga menunjukkan bahwa profitabilitas sebagai variabel intervening dapat memediasi pengaruh likuiditas dan aktivitas terhadap nilai perusahaan, namun profitabilitas tidak dapat memediasi pengaruh leverage terhadap nilai perusahaan.
Analysis and simulation of HIV/AIDS transmission dynamics and control strategies
Authors: Bashiru Kehinde , Aduroja Ojo O , Olaosebikan Mutiu L , Oladapo Asimiyu O , Olatunji Abiodun F , Dhikrullah Aasim A , Kolawole Mutairu K
Published: September 2023

Abstract
 
HIV/AIDS is a fatal illness that weakens the immune system of the body, making the victim susceptible to several opportunistic infections. The analysis and numerical simulation of the proposed epidemic model of HIV/AIDS with vertical transmission was carried out. The disease free and endemic equilibrium of the model were obtained and the basic reproduction number was established. Numerical simulations using the homotropy perturbation method was employed to demonstrate the efficacy of the key findings. The results of the simulation were graphically presented and interpreted.  
Keywords: HIV/AIDS, disease free equilibrium, endemic equilibrium, Laplace Adomian decomposition
DOI registration workflow for a science blog
Authors: Fenner Martin
Published: September 2023

In previous blog posts such as the one published earlier this week, I discussed the various elements involved in registering a DOI for a science blog post.
A DISCOURSE ON HOW ABONDONED HERITAGE CAN BE VALUED- A CASE OF SIDHPUR
Authors: Yasmoon Zahra , Rahbarianyazd Rokhsaneh
Published: September 2023

Sidhpur is a multifaceted municipal town with a rich historical background of the Bohras Muslim community who came to the city more than 100 years ago. The Bohrawads are the neighborhoods of the Dawoodi Bohras, and their unique havelis have been the most despised identity markers of the city. In recent years, the impact of diasporas and exile of the indigenous Bohra population has been enormous, leading to the abandonment of these wads. The aim of the research is to understand how the existing heritage can be understood, valued, and utilized. As these havelis are owned privately, the stakeholders have different takes on the maintenance and conservation of the insignia of tangible heritage. Any intervention for resurgences requires the analysis of all the metaphysical and physical layers of these wads. This research is an effort to examine the desire for these areas' resuscitation and uncover the causes of the opposition to preserving them as living historical monuments. It may contribute to enriching the literature of regeneration processes which can be attempted in Indian context.
TOKI AND REITS: DOMINATING HOUSING ACTORS IN TURKIYE AND THEIR DESIGN APPROACHES
Authors: Demirci Hale , Zengel Rengin
Published: September 2023

In Turkiye, after 1950’s accessible housing started to emerge as a problem, and in years, slum areas created a necessity for urban transformation. Global wars and other natural disasters have been playing important role in Turkiye’s housing market. In the context of Turkey's dynamic urbanization and population growth, the housing sector plays a pivotal role in shaping the nation’s built environment and social fabric. As a diverse and complex industry, housing development involves multiple actors, including government agencies, private developers, non-profit organizations, and architects, each contributing distinct design approaches to address the evolving needs of the population. There are two big parties working on mass housing production in Turkiye; TOKI (The housing development administration of Turkiye) and REITs (real estate investment trusts). As a governmental agency, TOKI is responsible for large-scale housing projects to provide affordable housing, and their design approach prioritizes functionality with an emphasis on meeting basic needs. On the other hand, REITs’ aim in the housing market is to generate income for investors, and their design approach focuses on enhancing the value of the property by prioritizing aesthetics and amenities that appeal to buyers. The design approaches in housing production of TOKI and REITs will be examined and discussed under three main headings: site planning, design aspects, and engineering aspects, accordingly, suggestions will be made for improvements.
Traffic Accidents with Fatal Consequences Committed While Under the Influence of Alcohol: An Interdisciplinary Forensic and Pharmaceutical, Forensic and Medical, Forensic and Narcological, Forensic and Psychiatric, Criminal Law Study of the Level of Respo
Authors: Shapovalov Valerii
Published: September 2023

The levels of countermeasures to traffic accidents with fatal consequences committed by citizens under the influence of alcohol or drugs were analyzed through interdisciplinary forensic and pharmaceutical, forensic and medical, forensic and narcological, forensic and psychiatric, criminal and law studies during pre-trial investigation for the prevention causes and conditions that cause fatalities, disability, bodily injuries of varying degrees of severity, to improve the system of timely provision of medical and pharmaceutical, social and economic assistance to victims and their families by health care institutions and pharmacies of various forms of ownership. Proven that high-profile traffic accidents with fatal consequences are on the rise. Administrative responsibility under Art. 130 of the Code of Ukraine on Administrative Offenses does not solve the severity of the problem. It is necessary to strengthen criminal responsibility and increase the fines for citizens who got behind the wheel of a car and left the road while under the influence of alcohol or drugs. Areas of coordination of the activities of law enforcement agencies in the field of road traffic safety have been worked out. Normative initiatives were proposed.
Bursting into the Image: Towards De-automatization in VR
Authors: Themistokleous George
Published: September 2023

The art installation Osmose (1995) by Char Davies, one of the most widely discussed media art projects, will be explored in relation to the notion of de-automatization. The de-automatized experience in Osmose will be developed by looking at theories of perception by Arthur Deikman and Maurice Merleau-Ponty, as well as George Stratton’s inverse goggle experiment, Bernard Stiegler’s account of automation, and Gilles Deleuze’s writings on the virtual. The article traces a double act of de-automatization in Davies’ Osmose that occurs due to the indeterminate object relations in the multi-media installation on the one hand, and their intertwinement with the organic sensing body on the other. This leads to an ungearing of one’s habitual perception, that produces a particular relation with the virtual dimension. By outlining the theoretical framework of the intertwining between technical object and bodily experience in Osmose, it becomes possible to speculate on the trajectory of contemporary VR experiences. Whilst the contemporary VR scene still relies heavily on the privileging of the visual dimension, the project We Live in an Ocean of Air by Marshmallow Laser Feast shows how VR environments can ‘leverage on’ emerging technologies to re-produce nuanced deautomatized experiences. De-automatization unravels how the reception of the deautomatized VR image reframes relations between actual and virtual.
Cruor
Authors: Nancy Jean-Luc
Published: September 2023

Cruor, Nancy’s last published book, is contained here in its entirety. The title is the Latin word for blood that is spilled, as distinguished from blood that circulates in the body (sanguis), and this is the starting point for a series of meditations on the pulse of the heart as bodily rhythm and drive, the question of the “it” or id that drives and is driven (and thus on Freud, as well as Nietzsche), the self as constituted by this drive, and on the cruelty of a modern world that reduces all phenomena to mere objects.
Allergic Intimacies
Authors: Gill Michael
Published: September 2023

Are food allergies disabilities? What structures and systems ensure the survival of some with food allergies and not others? Allergic Intimacies is a critical engagement with food allergies in their cultural representations, advocacy, law, and stories about personal experiences from a disability studies perspective that seeks to problematize a heavy focus on individualized medical approaches to food allergies especially where allergy testing and treatments are expensive and inaccessible for many people of color with allergies. It explores the multiple meanings of food allergies and eating in the US. The whiteness of the food allergy community and single-identity disability theory is inherently limiting and insufficient to address the complex choices that those with food allergies make. Allergic calculations therefore go beyond calculations regarding safety but include calculations regarding identities. I argue that racism and ableism create unique precarity for disabled people of color that food allergic communities are only beginning to address. Moving beyond individualized approaches to more robust coalitional efforts grounded in disability and racial justice can begin to shift these patterns of exclusion. Allergic Intimacies is an exploration of key debates about risks, dangers, safety, representations, and political concerns regarding the lives of individuals with food allergies.
Kaleidophonic Modernity
Authors: Brehm Brett
Published: September 2023

Kaleidophonic Modernity examines hidden audiovisual interplay in the imaginations of writers, artists, inventors, and scientists in the nineteenth century. With a focus on both canonical figures of urban modernity, namely Edgar Allan Poe, Charles Baudelaire, and Walt Whitman, and more obscure figures, namely Charles Cros and Nina de Villard, the book provides a transatlantic comparative perspective on mid-nineteenth century mediascapes and the prehistory of mechanical sound recording technologies. At the same time, the book offers fresh insights into the aesthetics of sound recording, Franco-American literary exchange, Poe’s aesthetic and intellectual legacy, the sounds of modern cities and technologies, and the overlooked genealogy of the kind of acoustical experimentation found in such movements as Dada, Futurism, and the sound art of today. Ultimately, the book establishes bridges between literary studies, auditory culture studies, and visual culture studies of the nineteenth century.
Gender Essentialism and Orthodoxy
Authors: Rich Bryce E.
Published: September 2023

Within contemporary Orthodoxy, debates over sex and gender have become increasingly polemical over the past generation. Beginning with questions around women’s ordination, arguments have expanded to include feminism, sexual orientation, the sacrament of marriage, definitions of family, adoption of children, and care of transgender individuals. Preliminary responses to each of these topics are shaped by gender essentialism, the idea that male and female are ontologically fixed and incommensurate categories with different sets of characteristics and gifts for each sex. These categories, in turn, delineate gender roles in the family, the church, and society. This book offers an immanent critique of gender essentialism in the stream of the contemporary Orthodox Church influenced by the “Paris School” of Russian émigré theologians and their heirs. It uses an interdisciplinary approach to bring into conversation patristic reflections on sex and gender, personalist theological anthropology, insights from gender and queer theory, and modern biological understandings of human sexual differentiation. Though seemingly unrelated discourses, the book reveals unexpected points of convergence, as each line of thought eschews a strict gender binary in favor of more open-ended possibilities. The study concludes by drawing out some theological implications of the preceding findings as they relate to the ordination of women to the priesthood, same-sex unions and sacramental understandings of marriage, definitions of family, and pastoral care for intersex, transgender, and non-binary parishioners.
Sufi Deleuze
Authors: Knight Michael Muhammad
Published: September 2023

Scholarship attempting to engage Deleuze’s theological consequences and possibilities has been dominated by Christian and Christocentric lenses. Sufi Deleuze argues that Deleuzian studies of theology have excluded non-Christian traditions and offers an intervention, engaging Deleuzian questions and themes from within Islamic tradition. By examining what I call “secretions of Islamic atheism,” I argue that Islamic tradition offers its own resources for navigating the theological tensions between transcendence and immanence that have defined Deleuze’s contributions to theology, and draw from these resources to imagine a Sufism of pure immanence. A Deleuzian approach to Islamic theology would have to affirm that there is no such thing as a universal “Islamic theology” that can speak for all Muslims in all historical settings, but rather a multiplicity of power struggles between major and minor forces that contest each other over authenticity, authority, and the making of “orthodoxy.” The discussions in Sufi Deleuze highlight Islam’s extraordinary range of possibilities, making use not only of canonically privileged materials such as the Qur’an and major hadith collections, but also exploring a variety of marginalized resources found throughout Islam that challenge the notion of a singular “mainstream” tradition. To say it in Deleuze’s vocabulary, Islam is a rhizome.
The World and God Are Not-Two
Authors: Soars Daniel
Published: September 2023

This book is about one particular way of clarifying how the God Christians believe in is to be understood. The key conceptual argument which runs throughout the work is that the distinctive relation between the world and God in Christian theology is best understood as a non-dualistic one. The ‘two’ (God + world) cannot be added up as separate, enumerable realities or contrasted with each other against some common background, since God does not belong in any category, while creatures are ontologically constituted by their relation to the Creator. In order to explore the unique character of this distinctive relation, I turn to Sara Grant’s work on the Hindu tradition of Advaita Vedānta and the metaphysics of creation found in Thomas Aquinas. Through a careful examination of the concept of relation in Aquinas and Śaṁkara, she argues that both were issuing the same challenge: to move beyond binary oppositions between the world and God to a ‘non-dualism’ (a-dvaita) which means neither ‘one’ (i.e., God = world) nor ‘two’ (i.e., God + world). The fact that the world only exists in (dependence on) God means—to the Christian—that ‘God’ and ‘world’ must be ontologically distinct (since God does not exist in dependence on the world) and simultaneously means—to the Advaitin—that they cannot be ontologically separate either. The language of non-duality allows us to see that both of these positions can be held coherently together without entailing any contradiction or disagreement at the level of fundamental ontology.
Improved path planning method for unmanned aerial vehicles based on artificial potential field
Authors: Lu Xinyi
Published: September 2023

With the advancement of unmanned aerial vehicle (UAV) technology and its widespread use in many facets of manufacturing and daily life, the need for UAV mission automation is becoming more and more practical. In order to improve the automatic obstacle avoidance and path planning performance of UAVs, this essay proposes an optimized route planning algorithm based on the artificial potential field (APF) method, which have solved the typical issue of the APF. This method chooses to conduct a pre planning trajectory of the UAV based on a rapidly expanding random tree (RRT). The pre-planned path will be split into continuous particles, and then generating intermediate waypoints. A nearby waypoint offers a gravitational force to aid the UAV in escaping the local minimum when it enters it. At the same time, taking the distance from the UAV to the obstacle and the radius of influence of the obstacle itself into consideration, dynamically adjust the gravitational and repulsive coefficients, set up a non-gravitational zone around the obstacle, which is beneficial for the UAV to elude the obstacle. And set up a repulsive limited action zone to reduce unnecessary turns in the trajectory to achieve the effect of path optimization. Considering the difficulty of single UAV missions in most cases, this paper discusses cooperative flight path planning for multiple UAVs into consideration.
A review of electric vehicle wireless charging technology research
Authors: Zheng Chenhang
Published: September 2023

With an increasing focus on environmental protection and sustainability, electric vehicles have become the mainstream trend for future automotive development. However, the development of electric vehicles has been limited by the bottleneck of charging technology. As a result, wireless charging technology for electric vehicles is viewed as an important solution, featuring high efficiency, high power density, and low cost. Specifically, three-phase wireless charging technology offers superior advantages such as high power density, low magnetic field leakage, and high coupling tolerance, making it the major trend for future development. This paper provides an overview of wireless charging technology for electric vehicles, while highlighting the benefits of three-phase technology over single-phase alternatives.
The classification and application of miniature unmanned aerial vehicle
Authors: Fu Zhuoqing
Published: September 2023

Miniature unmanned aerial vehicle (MAV) is more and more widely used in daily life. The small size of MAVs brings them many advantages like high portability and manoeuvrability. MAVs are playing important roles in many aspects because of their own catachrestic and advantages. There are many kinds of MAVs such as single-rotor MAV, multi-rotor MAV, fixed-wing MAV and bionic MAV. Each of them has its own advantages and drawbacks. The applications of them are decided by these characteristics. In order to better design MAV, in this paper, the advantages and disadvantages of the MAVs are analysed. The four most common kinds of MAVs are discussed in this paper. They have differences in structure and characteristics. The differences between these aspects are displayed in this paper. The suitable application scenario for each kind of MAV is provided based on its own peformance characteristics. This paper may offer a reference for MAV design.
High-frequency transformers optimized design for power electronic transformers
Authors: Liu Yijie
Published: September 2023

Because of its small size, high frequency transformers are widely used to maximize energy transfer. However, the leakage inductance and distributed capacitance of high frequency transformer can not only cause resonance, but also lead to transient changes of voltage and current in high frequency, which can lead to voltage spike, so that the switch tube is damaged. For transformers with the same output power, high-frequency transformers are much smaller and have lower calorific value than low-frequency transformers. Therefore, at present, many consumer electronics and network product power adapters are switching power supplies, and the internal high-frequency transformer is the most important component of switching power supplies. The basic principle is to turn the input alternating current into DC first, and then turn it into high frequency through a transistor or FET, etc., through a high-frequency transformer to change voltage, and then rectify the output again, plus other control parts, and stabilize the output DC voltage. In this thesis, we choose a more rational and cost effective winding structure, choose a more appropriate core material based on the comparison of different core materials, research on the insulation and cooling properties of transformer so as to improve the insulation properties of the transformer, make it safer and more efficient. The study has important significance to decrease the power loss of high frequency transformer and decrease the size of high frequency transformer.
Topologies and modulation methods in leakage current suppression for PV grid-tied inverters
Authors: Chen Siyao
Published: September 2023

Photovoltaic (PV) inverters are widely discussed as solar energy became commonly used as a renewable energy source. Transformerless grid-tied inverters are often chose for their low cost and low energy loss. Since the existence of stray capacitance between PV cells and conducting surface causes a changing common-mode voltage (CMV) which would arise leakage current and thus pollute the output current quality to the grid and endanger human safety, novel topologies and modulation strategies are proposed to save the problem for transformerless inverters. In this paper, different methods to suppress the leakage current will be analysed. The theoretical analysis of CMV and leakage current generation by single-phase inverter is presented. Based on the basic principle of leakage current suppression topologies proposed to eliminate the leakage current are introduced. The effects of some well-known modulation methods on CMV controlling have been compared, and novel methods dealing with three-phase harmonic management are presented.
Review of wireless communication transmission technology
Authors: Li Xinran
Published: September 2023

With the advancement of modern science and technology, wireless communication technology has grown rapidly. A number of common standards for wireless data transmission have emerged, primarily for long-distance and short-range wireless communication. This paper compares several common wireless communication transmission technologies, including satellite communication, Bluetooth, WiFi, NFC, etc. Wireless communication technology has now entered the 5G stage. From the previous SMS to the current video conference, the transmission rate and transmission accuracy have been greatly improved. Wi-Fi facilities everywhere in the city, Bluetooth transmission, mobile phone NFC payment, etc. are convenient and improve people's lives. Wireless communication technology also has many applications, such as 5G technology, Internet of Things technology, and the development of artificial intelligence technology.
The performances and applications of gas turbines in the aviation industry
Authors: Li Tianyi
Published: September 2023

This paper focuses on using gas turbines in various industries, particularly aviation, due to their unique power-to-weight ratio. It provides a detailed description of how gas turbines operate based on the thermodynamic Brayton cycle, which includes compressors, combustors, and power turbines. Additionally, the paper analyses both ideal and realistic cycles of gas turbines. Despite numerous advantages, gas turbines have limitations, such as high fuel consumption. However, technological advancements have led to the development of more efficient and quieter gas turbines. The paper explains the classification of jet engines, including turbojets, turboprops, and turbofans, each with specific applications. Moreover, the paper discusses the efforts to reduce the use of fossil fuels in aviation due to the increasing awareness of the impact of climate change. Scientists and engineers are exploring substitute fuels and materials and developing gas turbine systems that maximize work generated with minimal combustion; thus, this paper also highlights the importance of developing more efficient and environmentally friendly gas turbines to reduce the industry's carbon footprint while maintaining their productivity.
Development trends and future expectations of jet engine
Authors: Li Shengyuan
Published: September 2023

Nowadays, nearly all large commercial aircraft are powered by gas turbine engines. Having been developed for about 80 years of engines applied on commercial aircraft, from low bypass ratio turbojet engines to high bypass ratio turbofan engines since the first turbojet engine was patented in 1930 by Frank Whittle, gas turbine engines still have a high potential to improve the performance. Currently, motor thermodynamic efficiency can still rise in the following decades; composite materials, for instance, gamma titanium aluminum and polymer matrix composites, are becoming widely used in airliner propulsion due to their lightweight and high-temperature capability. Accordingly, environmental issues related to gas emissions have also become vital due to the continued flourishing of commercial airliners. In this paper, the development of gas turbine engines applied on commercial airliners from low bypass ratio turbojet engine "Nene1" to high bypass ratio turbofan engine "GE9X," and the current advancement of jet engines applied will be discussed in order to gain possible improvement on the performance of jet engines. Current conditions and expectations of jet engines will be discussed with specific examples, focusing on efficiency, materials and manufacturing, and environmental issues. In the paper, the engines mentioned are all related to commercial aircraft.
HCCI technology using hydrogen energy and artificial intelligence
Authors: Fu Yinlong , Hu Erhan , Xia Zongxian
Published: September 2023

The principle of a HCCI engine is to inject a mixture of fuel and air into the cylinder and allow it to self-ignite under a high compression ratio. Unlike traditional gasoline and diesel engines, the mixture in the HCCI engine is homogeneous and does not require an ignition system to ignite it. The air-fuel mixture in the cylinder is burned completely by compressing. It makes effective use of fuel. The structure is simpler than a conventional internal combustion engine. HCCI engine has a huge application prospect in many fields. Among them, the automobile is one of the biggest parts. However, some applications have not been widely used. Although the HCCI engine has so many advantages, as this study has discussed, many of its drawbacks are still serious, such as the difficulty in controlling the parameters in the combustion and work process, resulting in the theoretical process being difficult to realize fully. The stringent environmental constraints of HCCI engines, the scarcity of suitable fuels and the significantly lower lifetime of HCCI engines than conventional engines pose significant obstacles to their practical use. This study presents the idea of using artificial intelligence system-assisted control system to accurately control HCCI engines in real time, which has shown great potential in HCCI engine misfire detection and HCCI engine initial burn time prediction.
Current status and prospects of three-dimensional printing application
Authors: Li Han
Published: September 2023

With the acceleration of technological progress, Three-dimensional (3D) printing has gradually become the core of innovation in several industries. This article will take a comprehensive look at the evolution, applications, and development prospects of 3D printing technology. The article first compares the evolution of 3D printing technology and key categories, such as light curing, fused deposition melding and powder bed fusion. Next, the practical applications and success stories of 3D printing in aerospace, medical, and construction industries are discussed. Then, the advantages and challenges offered by 3D printing technology are analysed, such as the advantages of personalization, reduction of resource waste, and environmental protection, as well as the challenges of production speed, cost, and material constraints. Finally, this paper addresses future trends in 3D printing, discussing aspects such as bioprinting, smart materials, and automated manufacturing. The goal of this review is to provide researchers with the latest insights on 3D printing technologies since the development of additive manufacturing, with the aim of promoting its wide application and continuous innovation in various fields in the future.
Research on the application status of microelectronics technology in different fields
Authors: Fu Boyuan
Published: September 2023

The main focus is on the current status of the application of microelectronics in different fields. The current state of research in microelectronics is shown more visually through two experiments with diodes and MOS transistors. Then through its application in integrated circuits and automatic control shows the importance of microelectronics in today's information age, and finally through the prospect of future prospects, rational analysis of the development trend in the field of artificial intelligence, and put forward certain ideas, microelectronics can make artificial intelligence more accurate calculation compared to the larger integrated circuit boards. The aim of this paper is to provide the reader with an understanding of the current state of microelectronic applications and to simulate the actual situation through physical experiments on semiconductors and experiments on microelectronics and integrated circuit processes. It also discusses the application of microelectronics in automatic control, and thus obtains the current status of microelectronics research and future development prospects.
Ways to improve the quality of the ECG amplifier
Authors: Tang Tiancheng
Published: September 2023

Cardiovascular disease is becoming increasingly common, so ECG is becoming increasingly important in our daily life. ECG amplifier, which amplifies the body's weak signals, are getting more and more attention. It becomes necessary to improve the ECG amplifier's performance. This paper discusses four key ways to enhance the performance of the ECG amplifier: lowering the cost of the ECG amplifier; lowering the power consumption and noise of the ECG; and creating a circuit for specific use. The article lists other researchers works. By comparing with each other, the author gives his own opinion on improving the quality of the ECG amplifier. It shows that the improvement of the ECG is strictly connected to the new scientific results like new materials or circuit methods, and the conflicts between the quality and the cost of building an ECG should be balanced. In the end, the author also gives the prospection of the ECG amplifier research field.
Research on protection and control technology of power electronic transformers
Authors: Sun Xianghao
Published: September 2023

As the key equipment in the modern power system, the power electronic transformer's performance and reliability play a vital role in the stable operation of the power system. This paper studies the soft switching technology, control technology and fault protection method of power electronic transformer. First, the soft switching technology of power electronic transformers is introduced, including zero voltage switching, zero current switching and so on. These soft switching technologies can effectively reduce the switching loss of the transformer, improve efficiency, and reduce electromagnetic interference and harmonic generation. Secondly, the control technology of power electronic transformer is introduced, including traditional proportional, integral, and derivative control (PID) control, model predictive control and direct power control. These control technologies can realize the precise control of the output voltage and current of the power electronic transformer, to meet the requirements of the power system for power quality and stability. In addition, this paper also introduces the fault protection methods of power electronic transformers, including short-circuit protection, over-voltage protection and over-medium current protection. These fault protection methods can effectively protect power electronic transformers from various faults and ensure their normal operation and safety.
A general comparison on energy density between Li-Ion, Li-S and Li-O2 batteries
Authors: Jin Yucheng
Published: September 2023

Today, under the situation of the rapid development of EVs. Li-ion batteries is the first choice to power EVs than any other energy storage system. Many researches are done on various types of batteries with different theoretical and practical energy density and specific energy, where Li-O2 and Li-S battery are considered ultimate alternatives to Li-ion battery, mainly due to their high energy density. Basic mechanisms of these three types of batteries are introduced, and some of the recent researches being done on components of Li-ion battery is briefly discussed. Comparisons on energy density between these three types of batteries are made in the article, where Li-O2 battery has a highest theoretical and practical energy density, followed by Li-S battery, and finally Li-ion battery. By applying a high energy density storage system in EV can further expand the EV market, and hence tend to be potentially beneficial to the global environment.
Capsule endoscopy robotics and SLAM technology
Authors: Chen Pengkai , Shi Zhanshuo
Published: September 2023

Gastrointestinal diseases are a relatively common disease, and the advent of endoscopic technology is important for the early detection and treatment of this disease. In order to adapt to current medical conditions, endoscopic robots that can move autonomously are known to be the trend of development. Most of the current capsule endoscopic robots use simultaneous localization and mapping SLAM technology to localize the capsule robot and create a map of the intestinal tract. his paper summarizes the classification of capsule endoscopy robots by referring to several articles on capsule endoscopy robots. Their working methods, advantages and disadvantages are analyzed by comparing the various types of capsule endoscopy robots horizontally. This paper also analyses the application of SLAM technology to capsule endoscopy robots. The future development of capsule endoscopy robot is prospected by combining the mainstream SLAM software and hardware technologies today. This provides the development direction for the future development of capsule endoscopy robot.
Frequency allocation algorithm
Authors: Jiang Shuman , Liu Xinru , Ma Jiarui
Published: September 2023

Wireless communication technology's quick advancement has facilitated the ongoing formation of numerous new communication business scenarios and the thorough connectivity of man-machine-object-space. The conflict between few channel resources and high demand is becoming more and more obvious, which adds to the stress on the entire network. In order to enhance communication quality with constrained frequency resources, more optimal channel allocation techniques are urgently required. This paper discusses the increasing demand for frequency resources due to the exponential growth of data traffic, which has necessitated more efficient channel allocation methods to optimize communication quality with limited frequency resources. The evolution of mobile wireless cellular communication systems from the first generation to the current fifth generation, and the imminent emergence of the sixth generation, are also discussed. The paper highlights the importance of ultra-dense networks and device-to-device communication in meeting the capacity and coverage requirements of 5G networks. The advantages and disadvantages of different frequency reuse methods, specifically Fractional Frequency Reuse (FFR) and water injection algorithm, are analyzed. The paper summarizes these methods' principles and application effects in specific situations, emphasizing the need for appropriate frequency reuse methods to achieve optimal channel allocation and communication quality.