bluuebunny/crossref_metadata_2025 huggingface dataset:
International Kidney Paired Donation – The Experience of a Single Center
Authors: Francisco José , Carvalho Renata , Freitas Joana , Coimbra Miguel Trigo , Vilela Sara , Almeida Manuela , Tafulo Sandra , Pereira Rosário Caetano , Bolotinha Catarina , Ivo Margarida , Sampaio Susana , Ribeiro Catarina , Silvano José Luís , Malheiro Jorge , Pedroso Sofia , Dias Leonídio , Martins La Salete
Published: November 2023

Introduction: Kidney transplantation is the preferred treatment for end-stage renal disease, but organ scarcity can result in long waiting times. Living-donor kidney transplantation offers an alternative to deceased donation, but HLA or AB0 incompatibility can pose a significant obstacle. This study aimed to show the results achieved by a portuguese hospital since its integration into an international cross-over program, the South Alliance for Transplants (SAT). Methods: The SAT program was founded in 2017 and is composed of ten Spanish hospitals, three Italian hospitals and one Portuguese hospital. The program runs every 4 months and enrolled only pairs that were incompatible. Organ transportation is carried out in partnership with the Portuguese Air Force. Results: Three distinct cross-over kidney transplants were performed in partnership with three Spanish hospitals, culminating in the transplantation of three Portuguese patients out of a total of seven patients. The first swap was performed in March 2020, at the beginning of the COVID-19 pandemic, in partnership with two Portuguese and one Spanish hospital. It involved one donor/recipient pair from each country, with AB0 incompatibility between the Portuguese donor and recipient, and no complications were reported. The second swap occurred in December 2021, with three donor/recipient pairs (one Portuguese, where the recipient presented anti-donor antibodies and positive crossmatch with the potential donor, and two from two Spanish hospitals). It was complicated by type-IB cellular rejection in the Portuguese recipient, one week after transplantation, which was treated with corticosteroid therapy. The third swap, also in December 2021, involved two donor/recipient pairs (one Portuguese and one Spanish). It was complicated by delayed renal function due to acute tubular necrosis (histological diagnosis) in the Portuguese recipient. At follow-up, the patients‘ serum creatinine levels were within normal limits, and no other unexpected outcomes were recorded. Conclusion: SAT program has allowed some successful cross-over kidney transplants, probably improving the outcomes of kidney transplantation in Portugal. The expansion of such programs may contribute to a more efficient use of the available resources, increasing the number of transplants performed and reducing waiting times
Doação Renal Cruzada Internacional – A Experiência de um Único Centro
Authors: Francisco José , Carvalho Renata , Freitas Joana , Coimbra Miguel Trigo , Vilela Sara , Almeida Manuela , Tafulo Sandra , Pereira Rosário Caetano , Bolotinha Catarina , Ivo Margarida , Sampaio Susana , Ribeiro Catarina , Silvano José Luís , Malheiro Jorge , Pedroso Sofia , Dias Leonídio , Martins La Salete
Published: November 2023

Introdução: O transplante renal é o tratamento preferencial da doença renal crônica terminal, porém, a escassez de órgãos pode resultar em longos tempos de espera. O transplante renal de doador vivo oferece uma alternativa ao doador cadáver, mas a incompatibilidade HLA ou AB0 pode representar um obstáculo significativo. Este estudo teve como objetivo mostrar os resultados alcançados por um hospital português desde sua integração num programa internacional de doação cruzada, o South Alliance for Transplants (SAT). Métodos: O programa SAT foi fundado em 2017 e é composto por dez hospitais espanhóis, três hospitais italianos e um hospital português. O programa ocorre a cada 4 meses e inscreve apenas pares que são incompatíveis. O transporte de órgãos é realizado em parceria com a Força Aérea Portuguesa. Resultados: Foram realizados três cruzamentos distintos em parceria com três hospitais espanhóis, culminando no transplante de três doentes portugueses de um total de sete doentes. O primeiro cruzamento foi realizado em março de 2020, no início da pandemia de COVID-19, com a parceria de dois hospitais portugueses e um hospital espanhol, envolvendo 1 par doador/recetor de cada país, em que o português apresentava incompatibilidade AB0 e onde não se registraram complicações. O segundo ocorreu em dezembro de 2021 com 3 pares doador/receptor (1 português em que o recetor apresentava anticorpos anti-dador e crossmatch positivo com o potencial doador; e 2 de dois hospitais espanhóis), complicado com rejeição celular tipo-IB uma semana após o transplante no receptor português, tratada com corticoterapia. O terceiro cruzamento ocorreu também em dezembro de 2021 com 2 pares doador/recetor (1 português e 1 espanhol), complicado com atraso na função renal por necrose tubular aguda (diagnóstico histológico) na receptora portuguesa. Durante o follow-up, os níveis de creatinina sérica dos doentes mantiveram-se dentro dos limites normais, e não foram registradas outras intercorrências. Conclusão: O programa SAT permitiu a realização de alguns transplantes renais cruzados bem-sucedidos, provavelmente melhorando os resultados do transplante renal em Portugal. A expansão de programas semelhantes pode contribuir para um uso mais eficiente dos recursos disponíveis, aumentando o número de transplantes realizados e reduzindo os tempos de espera.
Is There Still a Role for Urine Cytology in Kidney Transplantation? Experience Report in a Teaching Hospital
Authors: Gouvêa Ana Luisa Figueira , Carvalho Fabiana Rabe , Nascimento Ana Lucia Rosa , Cosendey Rachel Ingrid Juliboni , Nascimento Camila de Melo Carvalho , Almeida Jorge Reis
Published: November 2023

Introduction: Urinary cytology has been used as a monitoring strategy for kidney transplant patients, live under chronic immunosuppression, as it is a non-invasive and low-cost method. The early detection of infections can prevent possible dysfunction and graft loss. However, its use has been decreased. Methods: We conducted a prospective study on voided urine samples from 29 consecutive patients undergoing kidney transplantation over a continuous period of 17 months, collected during their first-year post-transplantation. One technician prepared the samples by cytocentrifugation, Papanicolaou staining, and one pathologist analyzed them. Decoy cells (DCs) positive samples were prepared, by other two technicians, for contrast phase analysis, ultrastructural study, and immunofluorescence for SV40 T antigen. Results: We evaluated 252 urine samples from 26 patients. Two consecutive samples (0.8%) out of five, from the same patient (3.8%), referring to the fourth- and fifth-week post-transplant, showed low-grade squamous intraepithelial lesions; only rare epithelial cells with atypia of undetermined significance were detected (0.4%) in the sample corresponding to the sixth month post-transplant. The patient’s subsequent gynecological examination and Pap smear revealed no changes. Pseudohyphae and fungus yeasts were found in five samples (2.0%) from four patients (15.4%). Trichosporon sp. was identified in the urine of one of these patients. Decoy cells were detected in 25 samples (9.9 %) from six patients (23.1%). Two patients had sustained DCs shedding; one of them, presenting dirty background smears, developed Polyomavirus-associated nephropathy. Ultrastructural study of DCs showed icosahedral viral particles. Immunofluorescence (SV40 T antigen) was positive in DCs nuclei. Analysis by contrast phase was successful in samples with numerous DCs. Conclusion: Systematic urinary cytology after transplantation helps detect some infection signs. Patients with sustained DCs shedding and dirty background smears deserve special clinical attention. Electron microscopy and immunofluorescence (SV40 T antigen) are alternative techniques to detect polyomavirus reactivation. The findings suggest that urinary cytology still plays a role in kidney transplantation.
Pregnancy and Reproductive Planning in Transplanted Women
Authors: Surita Fernanda Garanhani , Guida José Paulo Siqueira , Juliato Cássia Raquel Teatin , Boin Ilka de Fátima Santana Ferreira
Published: November 2023

The objective of this literature review is to provide some pregnancy results in transplanted women, proposals for preconception, prenatal and postpartum evaluation, including postpartum contraception, and therapeutic guidance during pregnancy and lactation. Based on the results found in research on PubMed without date or language limitations, we discuss the importance of reproductive planning for women with solid organ transplants and what should be done before the transplant. There are formal contraindications to pregnancy; however, when planned, within clinical and laboratory criteria, and with adequate immunosuppression and specialized prenatal care, pregnancy is possible with good perinatal results. We also highlight the importance of psychological support among pregnant women with solid organ transplants.
Analisia Supply Chain Operations Reference dan Keputusan Pemilihan Pemasok Pertambangan Material Dengan Metode AHP Di PT. XYZ
Authors: Alda Syahnaz , Zakaria Muhammad , Syukriah Syukriah , Fadilla Meutia
Published: November 2023

Pemilihan pemasok sangat penting dalam aktivitas pembelian bagi perusahaan, dimana aktivitas pembelian merupakan aktivitas yang memiliki nilai penting bagi perusahaan karena pembelian komponen, bahan baku, dan persediaan mepresentasikan porsi yang cukup besar pada produk jadinya. perusahaan masih sering menghadapi masalah keterlambatan pasokan bahan baku atau sering kehabisan bahan baku. Akibatnya perusahaan sering tidak mampu memenuhi target produksi yang diharapkan. Kurangnya transportasi untuk mengangkut material, tenaga terampil dan pelengkapan menjadi penyebab keterlambatan juga. Supply Chain adalah jaringan perusahaan termasuk supplier, pabrik, distributor, toko atau ritel yang bekerja untuk menciptakan dan menghantarkan produk ke tangan pemakai akhir. serta perusahaan-perusahaan pendukung seperti perusahaan jasa logistik. Dari banyaknya pemasok atau supplier yang memasok barang ke PT.XYZ yang dapat mengakibatkan masalah dalam pengambilan keputusan pemilihan supplier mana yang paling banyak diminati oleh konsumen. Maka alternatif paling tinggi dan jenis terbanyak peminatnya yaitu Toko DD dengan nilai bobot 0,3027, peringgkat kedua PT.AA dengan nilai bobot 0,2979, ketiga PT.BB dengan nilai bobot 0,2958 dan ke empat CV. CC dengan nilai bobot 0,2945. Dapat disimpulkan bahwa pengukuran kinerja pemasok atau Supplier dengan metode AHP memperoleh hasil yaitu PT.AA dengan nilai bobot 0,2979, PT.Pembangunan Perumahan dengan nilai bobot 0,2958, CV. CC dengan nilai bobot 0,2945, Toko DD dengan nilai bobot 0,3027. Sesuai dengan kriteria QCDS maka pemasok yang layak dipilih adalah pemasok dengan bobot tertinggi yaitu Toko DD dengan nilai 0,3027.
Plasma Affects Sugar Conversion during Storage of Citrus sinensis Osbeck: Melatonin Is a Key Factor
Authors:   State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing, China, Ma Xiangyu , Ran Congfu ,   State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing, China, Zhou Xiongfeng ,   State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing, China, Liu Kun ,   State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing, China
Published: November 2023

Background: Atmospheric pressure plasma as a green preservation technology for fruits and vegetables can effectively reduce the number of microorganisms on the surface of fruits and vegetables to achieve the effect of reducing the decay rate and prolonging the freshness period. In addition, plasma can affect the quality of fruits and vegetables and delay the aging of fruits and vegetables. However, the intrinsic mechanism by which plasma affects the quality of fruits and vegetables is unclear. Objective: The aim of this work is to observe the quality changes of Citrus sinensis Osbecks led by plasma treatment during storage period and to analyze the intrinsic mechanism behind it, for the purpose of providing a theoretical reference or the application of plasma in fruit preservation and quality enhancement. Methods: Postharvest Citrus sinensis Osbecks were treated with dielectric barrier discharge (DBD) for 5min, and then the total soluble solids, titratable acids and solid-acid ratios of fruit pulp during storage before and after treatment were measured using a hand-held digital refractometer, and an acid-base burette. Changes in melatonin, sucrose converting enzyme, and simple sugar content of fruit were measured with an ultraviolet-visible spectrophotometer. Results: It was found that the soluble solids and solid-acid ratio of Citrus sinensis Osbecks by DBD treated were significantly increased during storage, while titratable acid did not change significantly. Melatonin and sucrose converting enzyme measurements revealed that plasma treatment significantly increased melatonin content and sucrose converting enzyme activity in the pulp. Measurements of monosaccharides showed that the glucose and fructose contents of the treated Citrus sinensis Osbeck pulp increased, while the sucrose content decreased. Conclusion: The reactive oxygen and nitrogen species generated with DBD plasma can effectively increase the melatonin content in the pulp of Citrus sinensis Osbecks, thereby improving citrus quality including promoting sugar conversion and enhancing flavor.
Implementação de um modelo automático de pluviômetro concebido e programado para alerta e fornecimento de dados meteorológicos em comunidades de risco na região serrana do estado do Rio de Janeiro
Authors: Militão Damiano da Silva , Ratamero Leandro de Amorim , De Assis Joaquim Teixeira , Dominguez Joel Sanchez , Barros Reydson Schuenck
Published: November 2023

Este trabalho apresenta a modelagem computacional e automação de um protótipo de estação meteorológica com pluviômetro de báscula. Objetivando a captura, manipulação, tomada de decisões e fornecimento público de dados meteorológicos, foi feita a utilização de hardwares de aplicação aberta convencionais tais como Arduino e ESP8266, seus instrumentos de sensoriamento, shields e ferramentas de linguagens de programação computacional com códigos livres tais como MariaDb, Jquery e PHP. Além do medidor de precipitação, a estação foi capaz de recolher dados climáticos de temperatura, intensidade de ventos, umidade, pressão e radiação solar de forma simplificada e com custo reduzido, processando computacionalmente estas variáveis e avaliando-as a fim de emitir alarme sonoro sempre que os parâmetros calculados atinjam valores previamente programados por modelos matemáticos utilizados. Inicialmente concebido para utilização em áreas com risco de escorregamento de encostas ou transbordo de cursos d’água na região serrana do estado do Rio de Janeiro, esse protótipo programado em linguagem C++, se mostrou eficiente e viável para expansão ou ampliação da rede de observação climática em outras regiões do país. Os testes demostraram consistência no funcionamento e calibragem do equipamento, o qual foi desenvolvido em três modelos, sendo um simplificado que apenas coleta dados e soa alarme sonoro, o segundo capaz de transmitir os dados via estações de rádio para uma central e o terceiro capaz de transmitir dados via internet. Na medida em que foi possibilitado reproduzir os dados em servidores centralizados a acessibilidade aos mesmos foi facilitada e assim construiu-se um website em linguagem PHP para domínio público das informações coletadas. Finalmente a disponibilização dos dados meteorológicos de forma ampla e aberta a comunidade, representa o objetivo de beneficiar pesquisadores, órgãos públicos e a comunidade geral no monitoramento e tomada de decisões para áreas de segurança, agricultura, meio ambiente e estudos científicos, viabilizando ainda a redução de impactos que possam acarretar prejuízos ou perdas de vidas em eventos climáticos extremos.
Inheritance of the Epidermolysis Bullosa Subtypes
Authors: Temaj Anjeza , Gashi Yllka , Beadini Albulena , Shabani Arjeta , Alija Gjylai , Haxhiu- Zajmi Arlinda , Nuhii Nexhibe , Elezi Nevzat , Beadini Sheqibe , Elezi Ron , Zhaku Vegim , Beadini Nexhbedin , Uzeiri-Havziu Drita , Bilalli Sefedin
Published: November 2023

Epidermolysis bullosa (EB) is a group of inherited disorders that cause skin to blister and tear easily. The disease is caused by mutations in structural proteins that are key for maintaining the integrity of the skin’s basement membrane zone or dermoepidermal junction. EB can be inherited in two ways: autosomal dominant and autosomal recessive. The most common form of EB, epidermolysis bullosa simplex (EBS), as well as some forms of dystrophic epidermolysis bullosa (DEB) are inherited in an autosomal dominant pattern. This means they are passed down from an affected parent to half of his or her children. Other forms of EB, such as junctional epidermolysis bullosa (JEB) and some forms of DEB, are inherited in an autosomal recessive pattern. This means that two copies of the mutated gene, one from each parent, are required to develop the condition.
Accessible and Affordable Housing for Urban MigrantWorkers: A Policy Perspective
Authors:   Assistant Manager, Haqdarshak Empowerment Solutions Pvt Ltd, Chennai (TamilNadu), India., K Jaisuman
Published: November 2023

Migrant workers face hardships in accessing better living conditions such as housing, water supply, and sanitation facilities. This is highly prevalent among construction workers and other manual laborers working in the manufacturing and service sectors. They live in poor conditions and face the threat of displacement and eviction. These people are vulnerable to harassment, especially women laborers and their children who are often the victims of trafficking and beggaring. Migrants also bear harsh conditions like long working hours, the nature and toughness of the work, and are prone to injuries, without any medical benefit. They are neglected and isolated without any social security benefits. This paper aims to study the policy problem related to housing for migrant workers and the challenges in its governance. To this end, this paper analyzes the provisions related to migrant workers in the Urban Housing Policy 2007, National Urban Rental Housing Policy 2015, and social housing policies of different state governments and the various schemes supporting it. To this policy analysis, the paper builds on the appropriate governance arrangement that can build equitable, inclusive, and sustainable policies to address the issues of migrant workers.
Psychological Characteristics of Families of Children with Diabetes Mellitus
Authors:   General Hospital of Thoracic Diseases Sotiria, Athens, Greece, Theofilou Paraskevi ,   School of Social Sciences, Hellenic Open University, Patra, Greece
Published: November 2023

Chronic diseases, such as childhood diabetes mellitus (DM), are a challenge for sick children and their families. Paediatric DM is characterized by a complex therapeutic management treatment, which has a physical and psychological effect on the whole family and entails multiple losses for the parents. Investigators point out that parents of children with DS react to the diagnosis with anger, denial, frustration, and depression and that mothers differ in their reactions from fathers. The teenager goes through a very intense period of his life, full of emotional tensions and outbursts, anger, sorrow, fear, and shame for his desires, thoughts, and himself. Thus, a disease in the period of adolescence is very likely to harm the adolescent’s self-image and negatively affect body image and perception of strength and ability. For this reason, the investigations carried out in the context of this field are necessary to focus not only on the needs of the children but also on those of their parents, as this is how it can be achieved better control. Despite all the difficulties in the management of the chronic disease of their child, it seems that the families of diabetic children adequately respond to the demands of intensive care and probably manage satisfactorily the psychological, social, and physical levels of their child’s chronic illness.
Job Burnout in Telework of Greek Workers: A Quantitative Study Identifying the Correlation of Extroversion and Introversion with Job Burnout
Authors:   Department of Psychology, SCG-Scientific College of Greece, Athens, Greece, Lefe L , Vlastos DD ,   SCG Lab of Experimental and Applied Psychology, SCG-Scientific College of Greece, Athens, Greece, Theofilou Paraskevi ,   Hellenic Open University, School of Social Sciences, Patra, Greece
Published: November 2023

The present study investigated how the consequences of telecommuting depend on the personality characteristics of employees. The hypothesis is that extroverted people will have more difficulties distancing themselves from the workplace and shifting work to home and thus high levels of burnout. It was also hypothesized that individuals with high levels of neuroticism would experience more burnout symptoms. The research involved 133 people who answered a questionnaire of demographic factors, the Eysenck personality questionnaire (EPQ) short form to determine extroversion and introversion and neuroticism, and the Maslach Burnout Inventory (MBI). The first hypothesis was not confirmed, as the results of the research showed that extroversion is negatively associated with burnout and therefore introversion is associated with more burnout symptoms. The second hypothesis was confirmed by demonstrating that neuroticism is positively correlated with burnout. Multiple regression showed extraversion as the most significant predictor of reduced burnout symptoms but showed no gender differences in burnout. In addition, it appeared that those with a higher academic education presented more emotional exhaustion and depersonalization which are indicators of burnout, but also more personal achievements which is an indicator of reduced burnout compared to those who were high school/IEK/KEK graduates. Even those with improved financial situation compared to 3 years ago presented more personal achievements.
Exploring Social Support, Pain Self-Efficacy and Health Beliefs in Older Adults with Musculoskeletal Disorders
Authors:   Hellenic Open University, School of Social Sciences, Patra, Greece, Anyfantopoulou E , Theofilou Paraskevi ,   Hellenic Open University, School of Social Sciences, Patra, Greece
Published: November 2023

Background: During the last decades, many studies have explored social support, pain self-efficacy, and health beliefs in older adults with musculoskeletal disorders. Aim: The purpose of the research is to investigate the beliefs of elderly people with musculoskeletal disorders regarding social support, self-efficacy in pain, and health locus of control. Methods: The research was carried out based on 3 questionnaires. The first questionnaire involved the Multidimensional Scale of Perceived Social Support, the second involved the Pain Self Efficacy Questionnaire, and the third included the Multidimensional Health Locus of Control (MHLC) scale. The research was conducted from April–June 2023 among 106 elderly people, of which 32 (30.2%) were men and 74 (69.8%) were women, members of long-term care services and others who visited the Open Care Center of Patras. Results: The mean age of the participants was 76.1 years and the majority were females, primary school graduates, and retired. Furthermore, most of them had moderate/mild manual labor, average financial status, and received medication for musculoskeletal problems. The results showed that there is a statistically significant positive correlation between pain self-efficacy and the support from the significant others (r = .370, p < .01), family support (r = .517, p < .01), overall social support (r = .435, p < .01), and financial status (r = .353, p < .01). Conclusion: The research showed that social support is positively related to pain self-efficacy in the elderly with musculoskeletal diseases.
Cyberprzemoc w pracy i stan zdrowia psychicznego: wyniki badań podłużnych
Authors:   Centralny Instytut Ochrony Pracy – Państwowy Instytut Badawczy, Warszewska-Makuch Magdalena
Published: November 2023

Artykuł prezentuje wyniki badań, których celem było sprawdzenie, w jaki sposób narażenie na cyberprzemoc wpływa na stan zdrowia psychicznego pracowników. Przyjęto założenie, że doświadczanie cyberprzemocy w pracy będzie prowadziło do pogorszenia stanu psychicznego respondentów. Badania przeprowadzono w paradygmacie podłużnym z dwoma pomiarami i z udziałem 500 pracowników wykonujących pracę umysłową, zatrudnionych na terenie Polski. Uzyskane wyniki nie potwierdziły wstępnej hipotezy. Okazało się, że – odwrotnie niż zakładano – to gorsze samopoczucie psychiczne pracowników zwiększa ryzyko doświadczania cyberprzemocy w miejscu pracy. Ponieważ, jak pokazały badania, różnice indywidualne (tj. stan zdrowia psychicznego) mogą wpływać na funkcjonowanie jednostek w organizacji i tym samym sprawiać, że dane osoby stają się bardziej predysponowane do doświadczania cyberprzemocy, ważne jest, aby interwencje podejmowane w celu poradzenia sobie z tym negatywnym zjawiskiem uwzględniały zróżnicowane potrzeby pracowników.
Brief discussion on quantum anomaly Hall effect: From theory to application
Authors: Liang Shuming
Published: November 2023

The investigation of topological insulator materials plays a crucial role in the exploration of the quantum anomalous Hall effect. A topological insulator is a distinct type of insulator characterized by its band structure with non-trivial topological features. Topological insulators are characterized by the occurrence of topological phase transitions in the electron energy bands at the Fermi level, which can be attributed to the combined effects of spin-orbit coupling and an external magnetic field. These transitions give rise to the emergence of Hall conductive boundary states, facilitating the manifestation of quantum Hall conductance even in the absence of magnetic fields. The quantum anomalous Hall effect exhibits promising prospects for various applications. For instance, it can serve as a viable means of current transmission in low-power electronic devices, or alternatively, as a medium for constructing qubits in topological quantum computing systems. Furthermore, the utilization of the quantum anomalous Hall effect extends to the development of magnetic sensors with superior performance characteristics and the creation of energy-efficient spintronic devices. This work endeavors to conduct a comprehensive examination and evaluation of the theory and practical implementation of the quantum Anomaly Hall effect by the analysis and review of relevant literature. In addition, it intends to provide potential avenues for future applications in this field.
An analysis of improvement methods for UWB positioning accuracy
Authors: Fang Xujie
Published: November 2023

Nowadays, due to the advancement of 5G technology and the emergence of smart cities, people's working and production environments are gradually transitioning from outdoors to indoors. Consequently, an increasing number of corporate and governmental organizations are demanding high-precision indoor positioning solutions. The utilization of ultra-wideband (UWB) signals in indoor positioning systems possesses multiple benefits, such as high transmission rates, strong anti-jamming capabilities, simple structures, and superior security measures. As a result, UWB stands out among other typical indoor positioning methods and has vast market potential. This paper introduces the basic concepts of ultra-wideband positioning techniques and thoroughly discusses the current state of domestic and international research as well as the main positioning models. The trilateral measurement method and TOA positioning algorithms are the primary focus of this paper. In the future, by exploring the combination of intelligent algorithms and wireless positioning technology by combining ultra-wideband and a variety of positioning methods and integrating these technologies together, it is possible to significantly improve positioning accuracy.
Overview of aerospace materials and their applications
Authors: Xia Qingyuan
Published: November 2023

Aerospace materials play a crucial role in modern aerospace technology. This paper is mainly a comprehensive overview of aerospace materials, including their classification, properties and applications. Aerospace materials are used in a wide range of applications, including aircraft and spacecraft, propulsion systems, and electronics. The paper also summarizes the importance and diversity of aerospace materials in various applications. The classification of aerospace materials includes metal materials, composite materials, ceramic materials and nanomaterials. Each material has unique properties that make it suitable for different applications. Aerospace materials are used in a wide range of applications, including aircraft and spacecraft, propulsion systems, and electronic devices. Materials for aircraft and spacecraft are particularly demanding because they are subjected to extreme temperatures, pressures and vibrations. Materials for propulsion systems and electronics require properties such as high strength, high electrical conductivity and high corrosion resistance. This paper also summarizes the importance and diversity of aerospace materials in various applications. Through the reading of this article, readers will understand the key role of aerospace materials in modern aerospace technology.
Study on micro-turbojet engine with high thrust-to-weight ratio
Authors: Chen Jiayu
Published: November 2023

Micro-turbojet engine refers to a closed cycle gas turbine engine with thrust below 500kg and power below 100kW. The performance indicators of domestic products are relatively low, and the main problems of domestic products are low thrust-to-weight ratio, poor reliability, and low heat resistance. The low working efficiency of the components and the short life limit the performance of the aircraft. In this paper, a micro-turbojet engine with a higher thrust-to-weight ratio and higher heat tolerance has been designed. The hollow centrifugal impeller with a built-in skeleton structure is successfully developed. The integrated design of the evaporation tube guide and shaft sleeve diffuser solves the problems of poor stability and high production cost, reduces the heat loss, and improves the overall efficiency. Ceramic matrix composite integral turbine disk makes the engine achieve breakthroughs in thrust-to-weight ratio, reliability, and heat tolerance. In addition, the engine has been tested to prove its feasibility. This paper may offer a reference for the design of micro-turbojet engine.
Analysis and improvements of a front wing for formula SAE car
Authors: Chen Xingrui
Published: November 2023

Although aerodynamic packages have been developed for many years, teams still face the problem of lack of downforce and how to control the turbulence. One possible reason is that the size of a formula SAE(Society of Automotive Engineers) car is strictly limited. It is unrealistic to blindly copy Formula 1's aerodynamic package without improving. Aided by CFD (computational fluid dynamics), this article focuses on the front wings aerodynamic characteristics in order to modify the downforce and the flow field around it. The front wing is divided into two parts, one is to direct the airflow bypass the tires, and the other is to diminish the airflow lifted by the front wing. Moreover, a special flap is designed to control the airflow and achieve good results. This article also shows the airflow around the whole car with aerodynamic packages to make the results more vivid. This article may offer a reference for the front wing design of race cars.
Research on the ultrafast laser in microscopy
Authors: Guo Zhiyuan
Published: November 2023

Ultrafast laser technology has been making a huge difference in different areas, such as material processing, laser surgery, and military usage. In parallel with the development of ultrafast lasers, microscopy also greatly promotes modern science, even though there are still some shortcomings, and one of them is that it is hard to obtain information about dynamic samples. However, this shortcoming can be solved by using ultrafast laser technology. This review will introduce the concept of ultrafast laser technology and electron microscopy, while several limitations of conventional electron microscopy will be mentioned. This paper also introduces two advanced technology in ultrafast microscopy. Nowadays, by taking advantage of ultrafast laser technology, the dynamic sample can be observed with highly improved temporal resolutions, which are basically restricted by the duration of pulses, but the ultrafast laser technology makes the duration even reach the range of attoseconds. However, there are some limitations, such as aberration, still hamper the development of high spatial resolution in microscopy. It is hoped that the ultrafast microscopy will break through the bottleneck of traditional microscopy in the future.
Multimodal sentiment recognition: A comprehensive review of analysis techniques, applications, and challenges
Authors: Hao Yuetong
Published: November 2023

This article offers a comprehensive review of multimodal emotion recognition. Initially, we provide a succinct overview of human emotions by delving into various emotion models. The focus then shifts to the representation of emotions through unimodal data sources, illustrating how these singular channels capture emotional cues. As we progress, the article underscores the advancements in multimodal fusion techniques that amalgamate multiple data sources for more accurate emotion detection. Three predominant architectures for multimodal fusion are then detailed, each showcasing its unique approach and benefits. Despite the leaps and bounds made in this field, several challenges persist. The latter section of this review highlights these lingering issues in multimodal emotion recognition, hinting at potential areas for further research and development. By weaving together the intricacies of emotion models, unimodal representations, fusion techniques, and existing challenges, this paper seeks to provide readers with a holistic understanding of the current landscape of multimodal emotion recognition.
Evaluating RSA encryption: Primality testing, pollards algorithms, and security challenges
Authors: Liu Ziqian
Published: November 2023

In the dynamic realm of cryptography, Rivest, Shamir, and Adleman (RSA) encryption stands as a pivotal element in ensuring secure communications. This analysis offers a detailed exploration of RSA encryption, emphasizing critical aspects such as primality testing, the intricacies of Pollards factorization algorithms, and the overarching security challenges intrinsic to this prevalent encryption paradigm. Delving deep into the heart of RSA, the research underscores the paramount role of primality testing in the RSA key generation process and critically evaluates the efficiency and reliability of diverse primality test methodologies. Moreover, it navigates the potential pitfalls introduced by Pollards algorithms and ponders their consequential implications for RSAs security matrix. Beyond these technicalities, the analysis brings to the forefront a spectrum of security challenges besieging RSA. This encompasses nuances like vulnerabilities arising from diminutive private keys, pitfalls linked to common modulus attacks, and susceptibilities stemming from cache timing discrepancies. By illuminating both the robust facets and inherent vulnerabilities of RSA encryption, this scholarly work elevates the current narrative on cryptographic security. It accentuates the perpetual necessity for meticulous scrutiny and agile adaptability in the quest to shield sensitive digital information in our progressively interconnected world.
Examining Schnorrs protocol in the context of zero-knowledge proofs
Authors: Yue Manqi
Published: November 2023

The rise of technology has brought with it a heightened awareness of the necessity to shield personal data and maintain exclusive access to specific knowledge. A notable solution that emerged from this consciousness is Zero-Knowledge Proofs (ZKPs) and, more specifically, Schnorrs Protocol. Historically, Zero-Knowledge Proofs have a compelling lineage, tracing their roots back to the fervent discussions among cryptographers aiming to achieve a balance between information sharing and privacy. ZKPs are cryptographic methods that allow one party to prove to another that a statement is true, without revealing any specific information about the statement itself. In the midst of these developments, Schnorrs Protocol emerged as a renowned interactive proof system. It possesses an intuitive structure that has made it pivotal in the enhancement of digital security. The typical flow of Schnorrs Protocol begins with the prover sending a commitment to the verifier. The verifier then sends a random challenge back to the prover, who, in turn, produces a response. Whats captivating is that the verifier can ascertain the validity of the proof without gaining insight into the underlying secret. Interactive Schnorrs Protocol involves real-time back-and-forth communication between the prover and verifier. On the other hand, the non-interactive version eliminates this need by using a cryptographic hash function, thereby streamlining the process.
The concept of infinity and the development of set theory solutions
Authors: Xiang Jianxin
Published: November 2023

The concept of infinity is intricately connected to and comprehended via the framework of cardinal and ordinal numbers. Cardinal and ordinal numbers are fundamental mathematical ideas within the field of set theory. The cardinal number is used to denote the quantity of items inside a given set while ordinal defines basic algorithms. This article demonstrates how the discipline of set theory may be used as a tool to investigate the nature of infinity, or at the very least give some insights into the subject. The idea of infinity may be better understood by looking at it through the lens of set theory and the commutative property. In addition to that, this research presents the connection and compatibility examination of Cohens operation upon the Zermelo Freankel axiomatic framework. These accomplishments are discussed in this article as illuminating insights for readers to consider while imagining the ultimate solution to the problems posed by the Continuum Hypothesis and the nature of infinity. Through the use of examples from contemporary researchers, the multiverse and indeterminism are introduced as potential approaches to the problem of how to solve Cantors legacy in the future.
Integrated L1 adaptive cartesian PD control for robotic loco-manipulation
Authors: Hu Muqun
Published: November 2023

This paper presents an integrated framework of L1 adaptive control and Cartesian PD control that overcomes the inherent limitations of the latter controller in tracking end effector position for loco-manipulation tasks. In a simplified system, this work represented the loco-manipulation problem with the Cartesian space dynamics of the end effector object, capturing the dominating parts of the dynamics in linear terms. The unmodeled nonlinear dynamics, along with other model uncertainties and external disturbances, are accounted for by the L1 adaptive controller, taking the Cartesian PD input as a component of the control law to resemble its behavior for the desired system dynamics modeled in the state predictor of the L1 adaptive controller. Through simulation results of various combinations of model perturbations and external disturbances, we show that this integrated framework can achieve similar tracking performances of the end effector and object without the need to re-tune controller parameters. This work demonstrated the mitigation of effects from system uncertainties with model perturbation of up to 100% higher than expected mass and up to 15N of sinusoidal external disturbances, with higher disturbance rejection possible through designing for more conservative estimates of unknown model parameters. Combined with the low computational cost of this framework, the improvement in state command tracking gives rise to potential implementation on robotic systems controlled with linear optimization formulations.
Temporal data-driven short-term traffic prediction: Application and analysis of LSTM model
Authors: Huang Xuange , Li Xinran , Wang Wenshuo
Published: November 2023

With the development of the economy, the number of private cars has increased, and traffic congestion is becoming increasingly common. In order to prevent traffic congestion, short-term prediction of traffic flow is urgent. This article is based on the data of a Hangzhou elevated bridge from October 4th to 18th, 2015, with a timestamp of 5 minutes and a total of over 4000 pieces of data, to have the Long Short-Term Memory (LSTM) model to be trained and the following days traffic flow to be predicted. The outcomes show that the model has high predictive capability and can reliably forecast future short-term transportation passenger flow, accurately reflecting the trend of data changes. Compared with the Auto-Regressive Moving Average (ARIMA) method with a Mean-Square Error (MSE) of 36, the LSTM model has a MSE of 22, which indicates a smaller MSE, indicating a more accurate prediction performance of LSTM. The LSTM models prediction is beneficial for alleviating traffic congestion, providing great convenience for peoples daily travel, and greatly reducing their travel time.
Strategi Pengelolaan Bandar Udara Sultan Muhammad Salahuddin Melalui Kompetensi dan Disiplin Karyawan Berkontribusi pada Level Of Service
Authors: Hasanah Khaimatul , Rafi Salahudin , Majid Suharto Abdul , Agusinta Lira , Kurniawan Jermanto Setia , Kania Dinar Dewi
Published: November 2023

Based on the observation in Sultan Muhammad Salahuddin Bima Airport, West Nusa Tenggara, several problems were found; the check-in counters were often disrupted or damaged, damage luggage could occur due to porters, incompetent employees in some fields, and indiscipline employees as the act of not paying attention to the company’s regulation. This study aims to determine the strategy for managing employees’ competencies and discipline at work that could contribute to the level of service at this airport and to which extent the role of employees’ competencies and discipline could increase the level of service. This study used SWOT analysis and interview as the research method. The results of the study show that the position of the airport is in a strong competitive position. Sultan Muhammad Salahuddin Bima airport should continue its effort to improve its employees’ capabilities, discipline at work and to provide the supporting facilities of all aspects including increasing airport capacity and improving the human resources quality of airport management.
Kualitas Sumber Daya Manusia dan Strategi Bisnis Perusahaan Perusahaan Logistik Nasional
Authors: Kurniawan Arif , Nofrisel Nofrisel , Widodo Erna , Tatiana Yana , Perwitasari Erni Pratiwi
Published: November 2023

The purpose of the study is to find out the direct and indirect contribution of human resources quality to the achievement of revenue target mediated by business strategy of the national logistics company. This research used SmartPLS 3.0-SEM and the sample was 53 employees of the Angkasa Pura Logistik head office. The result of the research indicates that the corporate business strategy is able to mediate human resources quality to the revenue target achievement in Angkasa Pura Logistik. The company provides its employees with education and trainings to improve their quality. During the pandemic, the company had implemented the newest business strategy by opening new branches with better operation. The company should also choose the employees selectively with competences needed in the respective fields. Angkasa Pura Logistik sustainably has improved and enhanced its service and product in line with the increasing demand. For further research, it can be proposed to study the contribution of these variables on similar companies in other countries.
Differentiating Shoulder Pathology from Cervical Spine Pathology: An Algorithmic Approach
Authors: Brusalis Christopher M. , Patel Karan S. , An Howard S. , Verma Nikhil N.
Published: November 2023

Accurate and timely diagnosis of musculoskeletal conditions is an essential component of high-quality orthopaedic care. The proximity of the shoulder to the cervical spine leads to a multitude of pathologic conditions whose clinical presentations overlap, posing a diagnostic challenge to orthopaedic providers. Missed or delayed diagnosis of the etiology for patient-described ‘shoulder pain’ causes frustration among patients, incurs increased healthcare costs, and delays treatment. Moreover, patients with concurrent conditions of the cervical spine and shoulder require deliberate consideration for how each condition contributes to patients' symptoms. The purpose of this review was to describe a systematic approach for evaluating and differentiating pathologies of the shoulder and cervical spine.
Jardun biko ereduan arrakasta izateko aholkuak
Authors: Gago Marta
Published: November 2023

SBLENDID proiektu osoaren planteamendua elkarlaneko taldekatzeetatik abiatu zen, lankidetza-lanaren oinarri baitziren. Horrela, elkarrizketa- eta sorkuntza-fasean, eta jasotako prestakuntzaren ondoren, parte hartu zuten irakasle gehienak taldetan antolatu ziren, SBLENDID proiektuan parte hartzen zuten pertsona guztientzako baliabide-banku komun batean bilduko ziren zenbait produktu elkarrekin egiteko. Hala, artikulu honetan azalduko da produktu horietako bat: jardun biko ereduan arrakasta izateko aholkuen dekalogo bat.
Successful surgical treatment in patients with late major vascular complications of missed minor vascular injuries
Authors: Disli Olcay , Erdil Nevzat
Published: November 2023

Aim: Vascular injuries can result from various causes, including trauma, surgery, or medical procedures, and can present immediate life-threatening risks. While some injuries are readily apparent and require urgent intervention, others may not display obvious signs of vascular compromise during the initial evaluation, potentially leading to delayed major complications. Analyse errors in the primary treatment of vascular injuries and delayed presentation of overlooked vascular injuries as surrogate indicators of the need for improved vascular surgical training for future surgeons.
Material and Methods: At the Inönü University Cardiovascular Surgery Clinic between June 2011 and June 2019, a All instances of unidentified vascular injuries that present post-trauma in the form of pseudoaneurysm, arteriovenous fistula, and post-traumatic arterial occlusion were reported within the hospitals during the study duration.
Results: This study included 28 patients undergoing multiple vascular repair interventions at our institution, including 14 penetrating, 10 blunt and 4 iatrogenic. Vessels of the lower limbs were involved in 18 cases (64.2%), vessels of the upper limbs in 7 cases (25%) and vessels of the neck in 2 cases (7.14%). All patients underwent surgical procedures without any fatalities or loss of limb function. There were no fatalities or unanticipated amputations.
Conclusion: Vascular injuries may lead to noteworthy delayed complications occurring months or even years subsequent to the initial injury, including false aneurysms, dissections, occlusions, and fistulas, which may cause considerable disability, albeit, fortunately, they are typically not fatal. Patients with suspected injury, even in the absence of clear clinical signs of vascular injury, should be carefully monitored and a detailed examination is recommended to assess individuals with potential vascular injury.