bluuebunny/crossref_metadata_2025 huggingface dataset:
ЖҮК ВАГОНДАРЫНЫҢ БІРҚАЛЫПТЫ ЖҮРІСІН ЗЕРТТЕУ КЕЗІНДЕ ЕСЕПТЕУ МОДЕЛЬДЕРІНІҢ МҮМКІН ӨЗГЕРІСТЕРІ
Authors: Мусаев Жанат Султанбекович , Туркебаев Мукангали Жамбулович , Сүлеева Нұргүл Зинабдинқызы
Published: September 2021

Бұл мақалада вагондардың негізгі түрлерінің мысалында бірқалыпты жүрісті зерттеу кезінде шанақтарды жобалау схемаларын мүмкін түрлендіру туралы айтылады. 

 Серпімді корпусы мен жүктемесі бар вагондардың конструктивті схемасын таңдаудың ерекшелігі дененің жүктемемен иілу тербелістерін ескерудің орындылығын негіздеу болып табылады, ал жалпы жағдайда серпімді дененің шексіз еркіндік дәрежесі болады. Іс жүзінде вагондардың серіппелі аспасының параметрлерін есептеу кезінде дененің иілу тербелісінің бірінші тонын ғана ескерген жөн; осьтік қораптардағы серпімді тығыздағыштардың қаттылығы кем дегенде 200 МН/м құрайды. Бұл жағдайда арбашалардың бүйір раманың тербелісі шанағының төмен жиілікті тербелісіне іс жүзінде әсер етпейді.

Мақалада жүргізілген талдау сұйық жүктің болуы динамикалық жүйенің құрылымын өзгертетінін, оған еркіндік дәрежесін қосатындығын және вагон корпусының графикалық моделін негіздеу кезінде міндеттерді шешу күрделене түсетінін көрсетеді толық толтырылмаған сұйық жүктемесі бар серпімді резервуар, серпімді ілуге орнатылған.

Жалпы жағдайда, ең күрделі динамикалық жүйелер вагондардың шанағына орналастырылған сұйық жүктері бар икемді резервуарлар болып табылады.

Мақалада әртүрлі модельдегі жүк вагондарының динамикалық қасиеттерін зерттеу кезінде графикалық модельдерді құру ерекшеліктері қарастырылады.
ЖҮК АРБАШАСЫНЫҢ БҮЙІР РАМАСЫН БЕРІКТІК ПЕН ШАРШАУДЫҢ БҰЗЫЛУЫНА ҚАРСЫ ТҰРУ ҮШІН ЕСЕПТЕУ
Authors: Сүлеева Нұргүл Зинабдинқызы , Батырбек Роза Жаксылыккызы
Published: September 2021

Мақалада жолдың қисық учаскелерінде пайда болатын тік статикалық жүктемелердің, тік-динамикалық, бойлық-инерциялық және орталықтан тепкіш әрекеттерден есептеу нәтижелері келтірілген.

Бүйірлік жақтауды беріктікке есептеу нәтижелері алынды және әртүрлі режимдерде ҚҚС кестелері алынды. Бүйірлік сәуледе пайда болған кернеулерді анықтау үшін бағалау аймақтары алынды. Бүйірлік раманың беріктігін есептеу нәтижелерін талдау көрсеткендей, барлық зерттелетін аймақтардағы эквивалентті кернеулер, олар жиі үзілістерге ұшырайды, сондай-ақ раманың басқа элементтерінде барлық есептеу режимдерінде максималды рұқсат етілгеннен аспайды.
ИССЛЕДОВАНИЕ СИСТЕМЫ СИНХРОННОЙ ТЯГИ С ЛИНЕЙНЫМИ ДВИГАТЕЛЯМИ
Authors: Ахатов Семят Турганжанович , Солоненко Владимир Гельевич , Махметова Нарзанкуль Мусаевна
Published: September 2021

В статье рассматриваются варианты различных сил, которые могут возникать при эксплуатации в линейных электродвигателях с синхронной тягой в скоростном наземном транспорте. Определены основные силы, которые оказывают внешнее воздействие на экипаж в боковом направлении. Для обеспечения безопасной эксплуатации экипажей в статье предлагается компенсировать направляющими силы бесконтактного взаимодействия сверхпроводящих электромагнитов на экипаже боковыми силами, которые, в свою очередь, могут выступать как возбуждение синхронных двигателей с токопроводящими элементами пути.  Проанализированы конструктивные комбинированные системы синхронной тяги и направления с системой подвеса, реализованные за рубежом. Предложены детальные схемы соединения обмоток комбинированных систем синхронной тяги и направления. В статье предложен математический аппарат для расчета направляющих усилий в случае применения комбинированных систем синхронной тяги и направления.
ДВИЖЕНИЕ ГРУЗОВОЙ ТЕЛЕЖКИ С УПРУГО-ВЯЗКИМИ СВЯЗЯМИ НА КРИВОМ УЧАСТКЕ ПУТИ
Authors: Ахатов Семят Турганжанович , Сүлеева Нұргүл Зинабдинқызы , Туркебаев Мукангали Жамбулович
Published: September 2021

Цель исследования – раскрыть особенности конструкции грузовой тележки с упруго-вязкими связями при движении на кривом участке. В статье рассмотрены конструкции тележек с применением упруго-вязких связей, которые соединяют колесные пары с рамой тележки. Данная конструкция относится к таким тележкам как Barber-2-S, ZK-1. В статье также показаны расчетные схемы сил, действующих на колесные пары при движении тележки  на кривом участке, действующих на раму тележки, при ее движении в кривой. Приведены уравнения равнодействующих сил на колесные пары, уравнения равнодействующих сил на раму тележки в горизонтальной плоскости. Определена зависимость, которая определяет силу сопротивления тележки. Такая конструкция позволяет совершать поступательные движения вдоль пути и поворотные вокруг вертикальной оси, перемещая горизонтальные силы реакции рельсов на колеса. Если последние не превышают по величине кулоновских сил трения, то возможно удерживать колесные пары в строго радиальных направлениях. Это позволяет избежать проскальзывания колес по рельсам.
Open Hart Surgery Experience of a High Volume Center During Pandemic
Authors: Karaarslan Kemal , Kunt Ayşe Gül , Abud Burçin
Published: September 2021

Objective: The aim of the study is to report the results of open heart surgery performed during the pandemic. Methods: One hundred eighty-five symptomatic patients were operated under a median sternotomy with a cardiopulmonary bypass in our pandemic hospital. They were all outpatient and were COVID-negative and strict precautions were taken. Results: 185 patients were referred to cardiovascular surgery for several type of cardiac operation. All patients were symptomatic due to primary cardiac disease. In-hospital mortality rate was seven times higher in those with Covid-19 (22.2%) while the non Covid-19 patients had a rate of (3.4%) (p<0.0001). Conclusion: Cardiac surgery is inevitable in symptomatic patients and can be done even with the risk of transmission and death. The patient, cardiac surgeon, and healthcare team should be aware of the ongoing contamination time.
Posterior Reversible Encephalopathy Syndrome During Acute Lymphoblastic Leukemia Treatment
Authors: Atamyıldız Sıla , Ataseven Eda , Eraslan Cenk , Kantar Mehmet
Published: September 2021

Posterior reversible encephalopathy syndrome (PRES) is a clinical and radiological syndrome, characterized by acute onset of headache, altered mental status, visual impairment, nausea, vomiting, seizure, and hypertension. PRES is a reversible condition if it is recognized early, but neurological damage or even death may occur. Herein, we present two cases of ALL who developed PRES during their induction therapy and a literature review of PRES.
The Assessment of HLA Sensitization Effect on Graft Function and Survival in Renal Transplant Recipients
Authors: Güleç Derya , Kılıçaslan Ayna Tülay , Soyöz Mustafa , Sert İsmail , Tuğmen Cem , Özkızılcık Koçyiğit Aslı , Tatar Erhan , Uslu Adam , Soypaçacı Zeki , Çerçi Burcu , Kılıçoğlu Murat , Pirim İbrahim
Published: September 2021

Objective: Anti-human leukocyte antibodies (HLA) play an important role in graft survival, particularly in kidney transplantation. Preformed anti-HLA antibodies, especially donor specific antibodies can cause acute and chronic rejections. In this study, it was aimed to assess the effects of anti-HLA antibodies in kidney patients before transplant on graft function, failure, and patient survival. Methods: PRA (Panel Reactive Antibody) levels were monitored using bead based methods such as Luminex and flow cytometry. Post-transplant estimated glomerular filtration ratios (eGFR) among first, third, and fifth year patient survivals and graft failures were statistically analyzed. Results: In this study, it was observed that related transplants had low levels of PRAs, and their eGFRs were at normal reference range. The patients without acute rejection episode (ARE) had higher eGFR values than those with ARE. When five year-graft survival terms were evaluated, it was found that 65.6±9.8% and 86.5±3.2% graft survival terms were detected in anti-HLA Class I/II positive and negative patients, whereas 74.8±6.4% and 84.3 ±2.6% graft survival terms were observed in ARE positive and negative patients, respectively. eGFR value is a predictor of graft failure and patient survival. Our Cox regression analyses (HR=0.843, p=0.00) also supported this information. Conclusion: The study concluded that although the correlation between PRA positivity and graft survival were not significant, the shortest graft survival was observed in PRA positive patients in the whole cohort and ARE positive patients. The importance and requirement of pre- and post-transplant PRA tests continue.
福建省5G芯片产业发展的挑战与对策
Authors: 曾 俊杰 , 张 耀 , 梁 静月
Published: September 2021

5G芯片的发展推动着芯片行业及我国经济增长。近年来福建省大力发展5G射频芯片产业，虽拥有较为完善的产业链，但是核心技术不成熟，不能形成技术壁垒，且与其他发达省份相比还有很大差距。本文通过分析福建省内5G射频芯片产业的问题与目前面临的挑战，同时借鉴其他省份和其他国家的经验，为福建省5G射频芯片产业献策建言，努力突破“卡脖子”难题。
5G手机研发项目成本管理初探
Authors: 蔡 少茹
Published: September 2021

5G手机自正式商用以来飞速发展，2021年各大手机厂商发布的新款中，高端手机几乎全部是5G手机。在手机竞争趋于白热化的当下，如何在保证产品质量的基础上进行有效的成本管理，成为众多手机厂商生存发展的关键。本文介绍5G手机的三种主流研发和生产模式，基于5G手机项目成本的构成和特点，从5G手机研发项目生命周期的六个阶段入手，研究手机研发各个环节的成本管理要点，为中国手机厂商优化项目成本管理提供参考。
直播电商及其行业发展趋势的创新研究
Authors: 周 功建
Published: September 2021

直播电商作为直播与电商的有机融合物，是由技术、媒介、平台、资本、企业和主播等因素协同驱动；得益于多种因素的驱动，我国直播电商行业正处于高速发展期。本文在分析直播电商的定义、优劣势的基础上，围绕直播电商产业链及其对零售业的影响进行重点剖析，并就直播电商行业的趋势进行分析与研究，旨在为直播电商行业的可持续健康发展提供借鉴和参考。
网约车APP用户满意度影响因素研究
Authors: 张 菊香
Published: September 2021

在网络APP新兴媒介平台支持下，网约车服务业蓬勃发展。本研究对网约车APP的用户满意度的影响因素进行研究，研究结果显示用户期望、感知有用性、感知易用性、感知安全性、感知稳定性、感知可靠性对感知价值有显著正向影响；感知价值对顾客满意度有显著正向影响；顾客满意度对顾客忠诚度有显著正向影响。因此，建议网约车APP应树立良好社会形象、提升用户体验、提升APP系统性能、建立行业数据互通体系。
福建纺织企业参与期货市场的探讨
Authors: 施 佳怡 , 廖 汶钊
Published: September 2021

在疫情的冲击下，人们对服装需求下降，纺织消费市场疲软，纺织业面临着库存积压，原材料价格波动较大的问题。我国的期货市场的棉花、棉纱、PTA以及新推出的短纤期货，都为纺织业在原材料采购上提供了解决这些问题的思路。现阶段国内已经有一定数量的纺织生产企业运用期货规避风险，但是纺织业较发达的福建，仍有许多企业对期货运用存在偏见。本文通过分析福建纺织业现状发现，纺织业作为福建经济的重要组成部分，虽然整体发展趋势向好，但抗风险能力不足，而运用期货则是解决这一问题的办法。本文结合了纺织业龙头企业运用期货的实例，为福建纺织业认识、运用期货，提高自身防范突发风险能力，可持续发展提供一定借鉴。
基于多元回归模型的新加坡国际收支的研究
Authors: 乔 嘉铭 , 杨 国梁
Published: September 2021

新加坡是一个较为发达的资本主义国家，其经济模式为“国家资本主义”，是继纽约、伦敦、香港之后的第四大国际金融中心，也是全球最开放的经济体之一，经济金融实力不容小觑。近年来在国际收支方面，新加坡经常账户顺差扩大，国际储备略有下降。本文对其经常账户顺差进行研究，分析显示国内生产总值（GDP）、实际有效汇率（REER）、出口（EX）、进口（IM）和外商直接投资（FDI）五个单一变量与国际收支平衡（BOP）之间不存在明显的因果关系，但是无法排除多元变量对其的影响。本文利用多元回归模型探讨1998年~2017年新加坡的收入效应、价格效应、出口效应、进口效应、投资效应对新加坡国际收支平衡的影响，结果表明新加坡国际收支平衡受到贸易进出口的影响较大，实际有效汇率的汇率效应次之，外商直接投资效应和国内生产总值的收入效应影响程度较小。本文依此结果在货币、财政、汇率和资金融通等方面对新加坡国际收支的改善给予一定建议。
提升物流管理专业实践周教学满意度探究
Authors: 王 抒涵 , 陈 梦
Published: September 2021

物流管理实践教育帮助学生培养课外实操能力，掌握专业运用技能，了解和学习企业运营和工作内容，使知识体系与社会实际贯通。本文以某校物流管理专业实践周教学为对象，采用网络问卷方式对其调研，通过层次分析法、模糊综合评价研究发现存在课堂内容枯燥、缺乏教师指导等问题，从而提出丰富教学方式、教学复盘等一系列有效建议，以改进实践周教学，提高学生参与度和满意度。
中国两岸三地服务业产业内贸易实证分析
Authors: 魏 然
Published: September 2021

21世纪正是全球经济发展迅速的新世代，服务贸易在全球经济中占有举足轻重的作用，对于中国更是如此，如何抓住机遇是我们要面对的课题。本文基于2005~2019年的统计数据，对两岸三地（内地、香港和台湾）的服务贸易现状、服务业产业内贸易的竞争力水平、主要服务行业的动静态变化进行对比，并选取两地人均收入水平差异、对外经济开放程度、经济规模、服务业对外投资和货物贸易规模等五个解释变量，建立香港大陆与香港台湾之间的两条回归模型，以观察两地之间服务贸易主要因素对GL指数的影响并进行实证检验。回归模型实证结果显示两地区相互的服务业产业内贸易受市场规模和对外直接投资、人均收入差异的影响大，且都是正向相关。对外开放水平和货物贸易规模这两个影响因素与外部环境、政治政策和技术的发达程度关联密切，对服务业的产业内贸易也会产生比较大的影响。因此，两岸三地需要深入学习合作，取长补短，促进共同进步，努力发展经济，提高人均收入水平，拓宽服务业合作模式。
La protection des forêts du bassin du Congo dans le cadre du développement durable. Enjeux et perspectives pour la République du Congo
Authors: KIANGUEBENI Ulrich Kevin
Published: September 2021

Les forêts du Bassin du Congo sont le deuxième massif forestier tropical après la forêt amazonienne. Elles couvrent plus de deux millions de km² et sont partagées entre six pays. Qualifiées de second « poumon écologique mondial », ces forêts jouent un rôle essentiel dans la régulation du cycle de l’eau, la protection des sols et de la biodiversité et constituent des ressources économiques cruciales pour la sous-région. Avec environ 227 millions d’hectares, la couverture de ces écosystèmes représente 26 % des forêts tropicales humides restant au monde et 70 % du couvert forestier d’Afrique. Pourtant ces forêts sont défrichées à un rythme alarmant en raison de la demande mondiale pour les ressources minérales, énergétiques et de bois. La pression de déforestation grandit avec une augmentation de la pratique des activités destructrices de la forêt liées à l’extension des terres agricoles, l’exploitation excessive ou anarchique des forêts, le développement des infrastructures, l’urbanisation, le braconnage, l’exploitation minière. Toutes ces activités sont menées sans aucun respect pour l’environnement, sans étude d’impact préalable. C’est donc pour réguler cette exploitation et sauver les forêts du bassin du Congo qu’il convient de procéder à une protection qui prenne en compte les enjeux de la gestion durable ; ceci afin de concilier les impératifs du développement durable aux énormes enjeux économiques.
Islamic Banking opportunities Across small and Medium Enterprises in Africa
Authors: ADRAOUI MOHAMED
Published: September 2021

After a first part dedicated to the presentation of the Islamic financial landscape, through its history, the different products offered and its mode of operation, the present work addresses the financing issues of small and medium enterprises in Africa. Our study focuses more specifically on identifying the financing of small and medium-sized companies in Africa, what contribution can alternative finance play in terms of diversification of funding sources.

The motive of this research is that the reader will find the elements likely to nurture and enrich a very relevant debate in these times of turbulence where the system that made the heyday of the financial world lacks solutions.
Intégration des entreprises automobiles locales dans le processus de sous-traitance au Maroc : évaluation et facteurs explicatifs
Authors: KHOURIBA Khalid , YAOUHI Mohamed
Published: September 2021

Le Maroc s’est engagé ces dernières années dans une nouvelle perspective visant le renforcement de son positionnement dans les chaines de valeurs mondiales. Effectivement, une grande évolution a été remarquée, notamment au niveau du secteur de l’automobile. Toutefois, il semble que cette dynamisation est le résultat de l’installation des entreprises étrangères qui sont venues pour s’occuper des chainons manquants dans les chaînes de valeurs présentes au Maroc. Par conséquent, il est maintenant le temps de s’interroger sur l’impact de cette dynamique sur l’intégration des entreprises locales, en particulier les entreprises automobiles.

En se basant sur une enquête réalisée auprès d’un échantillon de 33 entreprises locales, cet article consiste d’une part à mettre en évidence l’intégration des sous-traitants locaux et, d’autre part, à identifier les facteurs qui contribuent le plus à cette intégration selon différentes perspectives.
Gas chromatography-mass spectrometry metabolic profiling, molecular simulation and dynamics of diverse phytochemicals of Punica granatum L. leaves against estrogen receptor
Authors: Usha Talambedu , Middha Sushil Kumar , Shanmugarajan Dhivya , Babu Dinesh , Goyal Arvind Kumar , Yusufoglu Hasan Soliman , Sidhalinghamurthy Kora Rudraiah
Published: September 2021

Introduction: Breast cancer is the most common type of cancer globally and its treatment with many FDA-approved synthetic drugs manifests various side effects. Alternatively, phytochemicals are natural reserves of novel drugs for cancer therapy. Punica granatum commonly known as pomegranate is a rich source of phytopharmaceuticals. Methods: The phytoconstituents of Punica granatum leaves were profiled using GC-MS/MS in the present work. Cytoscape-assisted network pharmacology of principal and prognostic biomarkers, which are immunohistochemically tested in breast cancer tissue, was carried out for the identification of protein target. Followed by, rigorous virtual screening of 145 phytoconstituents against the three ER isoforms (α, β and γ) was performed using Discovery Studio. The docked complexes were further evaluated for their flexibility and stability using GROMACS2016 through 50 ns long molecular dynamic simulations. Results: In the current study, we report the precise and systematic GC-MS/MS profiling of phytoconstituents (19 novel metabolites out of 145) of hydromethanolic extract of Punica granatum L. (pomegranate) leaves. These phytocompounds are various types of fatty acids, terpenes, heterocyclic compounds and flavonoids. 4-coumaric acid methyl ester was identified as the best inhibitor of ER isoforms with drug-likeness and no toxicity from ADMET screening. γ-ligand binding domain complex showed the best interactions with minimum RMSD, constant Rg, and the maximum number of hydrogen bonds. Conclusion: We conclude that 4-coumaric acid methyl ester exhibits favourable drug-like properties comparable to tamoxifen, an FDA-approved breast cancer drug and can be tested further in preclinical studies.
Impact of intravenous iron on cardiac and skeletal oxidative stress and cardiac mitochondrial function in experimental uraemia chronic kidney disease
Authors: Bhandari Sunil
Published: September 2021

Introuction: Uraemia leads to changes in cardiac structure, metabolic remodeling and anaemia, key factors in the development of heart failure in patients with chronic kidney disease. Previous studies have identified abnormalities in mitochondrial function, potentially impairing energy provision and enhancing oxidative stress. This study characterised oxidant status and changes in mitochondrial function in uraemia and the impact of correcting anaemia via intravenous iron therapy. Methods: Experimental uraemia was induced in male Sprague-Dawley rats via a subtotal nephrectomy and parenteral iron administration given 6 weeks post-surgery. Oxidative stress from tissue samples was evaluated by measuring pro-oxidant activities and anti-oxidant capacities in both sham and uraemic animals with and without iron supplementation. Thiobarbituric acid-reactive substances (TBARS), aconitase activity and cardiolipin were measured. Mitochondrial function was assessed using the Seahorse XFp analyser on isolated mitochondria excised from cardiac tissue. Results: Oxidative stress in this uraemic model was increased in cardiac tissue (increased GSSG/GSH ratio, TBARS and increased activities of pro-oxidant enzymes). There was no impact on skeletal tissue. Parenteral iron ameliorated oxidative stress by enhancing the anti-oxidant defense system in cardiac tissue and skeletal tissue. Examination of respiratory reserve in cardiac mitochondria demonstrated that parenteral iron restored mitochondrial function. This experimental model of uraemia demonstrated a specific oxidative stress on the heart muscle without significant changes in skeletal oxidant status. Iron therapy improved anti-oxidant defence system, consequently reducing oxidative stress in the heart and skeletal tissue. There was an improvement in cardiac mitochondrial function. Conclusions: This experimental evidence indicates that iron therapy could reduce vulnerability to oxidative stress and potentially improve both cardiac and skeletal functional capacity from improvements in mitochondrial function.
Assessing psychosocial interventions for informal caregivers of older people with early dementia: a systematic review of randomized controlled evidence
Authors: Wang Shanshan , Mello Johanna de Almeida , Declercq Anja
Published: September 2021

Dementia affects not only the patients, but also the caregivers. Timely targeted supporting for informal caregivers of people with dementia can improve their health and life quality, as well as contribute to sustainable healthcare. However, which interventions could efficiently support them and why still remains unclear. This systematic review aims to close this gap by critically assessing the current state of randomized controlled evidence concerning informal caregivers of older people with early dementia. We searched the electronic databases PubMed, CINAHL, Embase, Cochrane and Web of Science and assessed the methodological quality of the selected studies using the validated PEDro scale. A total of 2067 studies were identified in the initial searching, and 29 randomized controlled studies were finally selected based on the rigorous inclusion and exclusion criteria. Through completely assessing the methodological quality of studies, and the essentials and effectiveness of the 22 different types of interventions, we identified which interventions were effective and why. Timely targeted interventions for this caregiver group remains scarce. Furthermore, we highlight that there is a lack of systematic caregiver needs assessments prior to or when delivering the interventions.
The role of astrocytes in brain metastasis at the interface of circulating tumour cells and the blood brain barrier
Authors: Burn Layla , Gutowski Nicholas , Whatmore Jacqueline , Giamas Georgios , Pranjol Md Zahidul Islam
Published: September 2021

Tumour metastasis to the brain is a complex process involving crosstalk between the circulating tumour cells and the blood brain barrier (BBB). Astrocytes, which reside in the abluminal surface of the microvasculature of the BBB, are now known to play an essential role in tumour cell migration and invasion into the brain parenchyma. For instance, pro-inflammatory astrocyte secretions, including TNF-α, IL-6, CXCL10 as well as polyunsaturated fatty acids interact with circulating tumour cells to promote migration and proliferation. Additionally, astrocyte and tumour cell derived MMPs play a vital role in tumour cell invasion through the BBB. Understanding these complex interactions between tumour cells and astrocytes in the tumour microenvironment may contribute to the development of novel therapeutics for brain metastasis. Therefore, in this review, we present key interactions within the neurovascular unit of the BBB in the tumour microenvironment that significantly aids cancer metastasis, focusing particularly on astrocytes.
Exit Slips As Predictor of Academic Performance
Authors: Basco Raymart
Published: September 2021

Formative assessment plays a vital role in the delivery of quality and relevant education among learners. Data derived from the assessment results provide pieces of evidence for teachers to determine learners who need assistance, advance instructional objectives, track learners’ progress toward those standards, and identify what intervention and support are required. This descriptive-survey research examined the impact of exit slips in predicting intermediate pupils’ science achievement. Seventy-three pupils were involved in the study who were selected through a total sampling. Weighted mean, ranking, standard deviation, mean percentage score, frequency, Pearson correlation coefficient, and coefficient of determination were utilized to process and analyze statistically the data using SPSS. The findings of the study highlighted that exit slips can help learners in their learning since they reflect pupils’ understanding and increase accountability among them. The results revealed that there was a high positive association between the self-rating report and the academic performance of the respondents. The impact of self-reported rating was found significant on the performance of the pupils. Hence, when teachers took necessary and relevant remediation as well as enrichment based on the self-reported rating, academic performance may be improved. It was recommended that teachers may adapt the use of exit slips in their classes to improve academic performance among learners.
Zarządzanie środkami finansowymi w wybranych gminach województwa podkarpackiego
Authors: Szczygieł Lucyna , Wojtowicz-Żygadło Jolanta
Published: September 2021

Istotnym elementem dobrze prosperującej gminy jest skuteczne zarządzanie majątkiem samorządowym. Jednym z elementów zarządzania jest niezbędna wiedza i umiejętność dokonywania oceny zasobów gminnych. Celem artykułu jest analiza zarządzania środkami budżetowymi wybranych gmin. W latach 2015–2017 dochody ogółem ukształtowały się na poziomie 33,0 mln w gminie Grodzisko Dolne i 46,9 mln w gminie Jarosław. Dochody badanych gmin pochodziły z: dotacji, subwencji oraz z tytułu podatków i opłat. Gminy generują dodatni wynik ogółem w latach 2015–2016, natomiast rok 2017 zamyka się deficytem. W badanych gminach wskaźniki budżetowe kształtują się na dobrym poziomie, zaś relacja nadwyżki operacyjnej do dochodów ogółem ma tendencję wzrostową. W obu gminach stwierdzono niewielkie obciążenie dochodów ogółem wydatkami na obsługę zadłużenia. Jednakże występuje znaczne obciążenie dochodów własnych spłatą rat kapitałowo-odsetkowych w latach 2015–2016 w gminie Grodzisko Dolne. W gminie Jarosław występuje niewielkie obciążenie dochodów własnych spłatą rat kapitałowo-odsetkowych.
Realizacja koncepcji TQM w wybranych systemach zarządzania organizacją
Authors: Popek Stanisław , Popek Adam
Published: September 2021

Ze względu na fakt, że filozofia TQM obejmuje wszystkie istotne aspekty funkcjonowania organizacji, a więc wizję i strategię, zarządzanie zasobami i procesami, w tym procesami doskonalenia, wydaje się być jednym z kluczowych elementów osiągnięcia przez nie sukcesu rynkowego. Otwartość na nowe idee jest jedną z podstawowych przyczyn faktu, że TQM łatwo przystosowuje się do uwarunkowań wynikających z coraz szerszego stosowania norm międzynarodowych, dotyczących projektowania i konstruowania systemów zarządzania w przedsiębiorstwach. W ramach niniejszej pracy przedstawiono próbę wykorzystania tej koncepcji w procesie wdrażania systemów zarządzania jakością, środowiskowego oraz bezpieczeństwa i higieny pracy w organizacji.
Instytucjonalne aspekty konwergencji w przestrzeni społeczno-gospodarczej polsko-ukraińskiego regionu transgranicznego
Authors: Kucab-Bąk Katarzyna
Published: September 2021

Ewolucja otoczenia instytucjonalnego i prawnego jest ściśle powiązana z rozwojem instytucjonalnego i organizacyjnego wsparcia konwergencji społeczno-gospodarczej w regionie transgranicznym. Główne elementy tego założenia to elementy: instytucjonalno-subiektywne, informacyjno-statystyczne, naukowo-analityczne, edukacyjne, administracyjno-zarządcze, regulacyjno-koordynacyjne, marketingowe i instytucjonalno-infrastrukturalne. Każda z tych sekcji ma szczególny wpływ na funkcjonowanie transgranicznych mechanizmów konwergencji, stymulując lub ograniczając rozprzestrzenianie się konwergentnych procesów w regionie transgranicznym. W polsko-ukraińskim regionie transgranicznym, najbardziej znaczącym pozytywnym wpływem na konwergencję społeczno-gospodarczą aktualnie są elementy instytucjonalne i edukacyjne. Zamiast tego komponenty administracyjne i instytucjonalne oraz elementy infrastruktury, ze względu na ich nieodłączne wady, częściowo spełniają funkcję ograniczającą.
To solving actual problems of staffing in the system of vocational education
Authors: Дубицкий В.В. , Коновалов А.А. , Кислов А.Г.
Published: September 2021

В статье на примере Свердловской области рассматривается возможность придать дополнительный импульс развитию профессионального образования — прежде всего его кадровой составляющей. Для решения этой задачи были использованы актуальные научные публикации и обобщен опыт практического взаимодействия научно-педагогического сообщества с органами государственного управления и профессиональными образовательными организациями, изложенный в материалах региональной научно-практической конференции «Реалии и перспективы кадрового обеспечения системы профессионального образования», состоявшейся 19 мая 2021 г. в Российском государственном профессионально-педагогическом университете (г. Екатеринбург). Цель данной работы — сравнить научно-концептуальные оценки состояния и перспектив развития кадрового потенциала профессиональной школы с мнениями педагогов и прогнозами специалистов в органах власти, а также осмыслить полученные результаты. В статье, помимо определения актуальных проблем кадрового обеспечения системы профессионального образования, предлагаются обоснованные теоретически, статистически и практически способы их решения.

Using the example of the Sverdlovsk Region, the article considers the possibility of giving an additional impetus to the development of vocational education — first of all, its personnel component. In order to solve this problem, current scientific publications were used, and the experience of practical interaction of the scientific and pedagogical community with public administration bodies and professional educational organizations was summarized, described in the materials of the Ist regional scientific and practical conference “Realities and prospects of personnel support of the vocational education system”, held on May 19, 2021, at the Russian State Vocational Pedagogical University (Yekaterinburg). This work aims to compare scientific and conceptual assessments of the prospects for the development of the personnel potential in a professional school with the opinions of teachers and forecasts of specialists from the authorities, as well as to comprehend the results obtained. In addition to determining current problems of personnel support of the vocational education system, the article offers theoretically, statistically and practically justified ways to solve them.
An evaluation of cryptocurrency payment channel networks and their privacy implications
Authors: Kemal Akkaya  , Suat Mercan  , Enes Erdin
Published: September 2021

Cryptocurrencies redefined how money can be stored and transferred among users. However, public blockchain-based cryptocurrencies suffer from high transaction waiting times and fees. To address these challenges, the payment channel network concept is touted as the most viable solution to be used for micro-payments. The idea is exchanging the ownership of money by keeping the state of the accounts locally which provides transaction approvals in seconds. Such attention on payment channel networks has inspired many recent studies that focus on how to design them and allocate channels such that the transactions will be secure and efficient. However, as payment channel networks are emerging and reaching a large number of users, privacy issues are becoming more relevant, this raises concerns about exposing not only individual habits but also businesses' revenues. In this paper, we first propose a categorization of the existing payment networks formed on top of blockchain-backed cryptocurrencies. After discussing several emerging attacks on user/business privacy in these payment channel networks, we qualitatively evaluate them based on a number of privacy metrics that relate to our case. Based on the discussions on the strengths and weaknesses of the approaches, we offer possible directions for research for the future of privacy based payment channel networks.
Economic efficiency of spectrum allocation
Authors: Vadim Nozdrin
Published: September 2021

Spectrum demand is rapidly expanding, driven by the developments of incumbent radio systems, as well as with the requirements of new technologies and market players to get spectrum access. In this regard, one of the fundamental functions of the state spectrum regulator is to create an enabling administrative and legal environment to ensure efficient spectrum use and to mitigate scarcity of this valuable natural resource. This paper analyses the economic value of spectrum use and suggests an extension of the spectrum's traditional technical boundaries, in order to take into consideration energy, environmental, sanitary and bio-geotechnical limits. The study reviews the phenomena of increasing transaction costs and negative externalities of spectrum access requiring economic criteria and assessment to achieve optimum resource allocation with a spectrum's demand growth. Results develop an input-output matrix as an allocation instrument to achieve spectrum efficiency and optimum equilibrium based on analysis of the economic effects from different band utilization scenarios, supplemented by currently used technical criteria. Practical application of proposed economic methods should improve the existing spectrum management system.
Non-coherent massive MIMO-OFDM for communications in high mobility scenarios
Authors: Kun Chen-Hu  , Yong Liu  , Ana Garcia Armada
Published: September 2021

Under scenarios of high mobility, the traditional coherent demodulation schemes (CDS) have a limited performance, due to the fact that reference signals cannot effectively track the variations of the channel with an affordable overhead. As an alternative solution, non coherent demodulation schemes (NCDS) based on differential modulation have been proposed. Even in the absence of reference signals, they are capable of outperforming the CDS with a reduced complexity. The literature on NCDS laid the theoretical foundations for simplified channel and signal models, often single carrier and spatially uncorrelated flat fading channels. In this work, the most recent results assuming orthogonal frequency division multiplexing (OFDM) signaling and realistic channel models are explained, and the impact of some hardware impairments such as the phase noise (PN) and the non linear high power amplifier (HPA) are also considered. Moreover, new potential research lines are also highlighted.
Performance of a parallel Hamming coding in short-frame OFDM sensor's network
Authors: Jorge Fernandez-Mayoralas  , Raouia Masmoudi Ghodhbane
Published: September 2021

In this paper, we focus on the most relevant Error Correcting Codes (ECCs): the Hamming code and the Reed-Solomon code in order to meet the trade-off between the low implementation complexity and the high error correction capacity in a short-frame OFDM communication system. Moreover, we discuss and validate via simulations this trade-off between complexity (Hamming is the easiest to code) and error correction capability (Reed-Solomon being the most effective). Therefore, we have to either improve the correction capacity of the Hamming code, or decrease the complexity cost for the Reed-Solomon code. Based on this analysis, we propose a new design of parallel Hamming coding. On the one hand, we validate this new model of parallel Hamming coding with numerical results using MATLAB-Simulink tools and BERTool Application which makes easier the Bit Error Rate (BER) performance simulations. On the other hand, we implement the design of this new model on an FPGA mock-up and we show that this solution of a parallel Hamming encoder/decoder uses a few resources (LUTs) and has a higher capability of correcting when compared to the simple Hamming code.
Sintered transparent polycrystalline ceramics: the next generation of fillers for clarity enhancement in corundum
Authors: Mansoor Mubashir , Mansoor Mehya , Mansoor Maryam , Themelis Ted , Çinar Şahin Filiz
Published: September 2021

A significant proportion of mined natural corundum (ruby and sapphire) contain fractures, which negatively affects a gemstone’s clarity and value. Over the past decades, heat treatment techniques have been developed for either fracture healing, or filling to make such gems marketable. The clarity enhancement processes are mainly based on techniques which are either not durable, as in the case of lead silicate fillers, or do not yield perfect transmittance through a fracture, as in the case of borax based fluxes. Therefore, the gemstone treatment community is actively in pursuit of better techniques for clarity enhancement in corundum. Given that application of pressure is a recent advancement in the heat treatment processes of natural sapphire, it is essential to explore the possibilities regarding different outcomes such treatments can have. In this perspective paper, we have briefly described how application of pressure during heat treatments can lead to in-situ sintering of transparent polycrystalline ceramics within the fractures of corundum, which can result in clarity enhancement. Spinel-structure based fillers can be tailored to mimic corundum in terms of tribological, chemical and optical properties. Therefore, gemstones treated with such fillers will be durable, unlike currently used glass-based filler material. We also provide a possible explanation for ghost-fissures in sapphires heated under pressure, as being a by-product of in-situ sintering process of ceramic fillers that are thermodynamically compatible with Al2O3. The prospect of transparent polycrystalline ceramics in the gem and jewelry industry opens a new field of research in this area, given that ceramic fillers can outperform currently used methods and material for clarity enhancement in gemstones. In essence, we present a novel application for sintered transparent polycrystalline ceramics.
Analisis Isi Pesan dakwah dalam Tanbih TQN PP. Suryalaya
Authors: Ahmadi Ahmadi
Published: September 2021

Dengan perkembangan zaman, media (wasilah) dakwah semakin banyak, salah satunya ialah melalui media tulisan (dakwah bil qolam). penelitin ini adalah untuk menganalisis isi pesan dakwah dalam Tanbih TQN PP. Suryalaya yang ditulis oleh Syaikh Abdulloh Mubarok bin Nur Muhammad pada tahun 1956 M.  Metode yang dipakai dalam penelitian ini adalah analisis isi, dan teknik pengumpulan datanya, yaitu dengan mencari data mengenai hal-hal yang berkaitan dengan masalah-masalah yang akan diteliti berupa catatan, buku, surat kabar serta data penunjang lainya yang  berhubungan dengan masalah penelitian, serta data yang bersumber dari Tanbih TQN PP. Suryalaya.  Hasil penelitian menemukan bahwah isi pesan meliputi masalah keyakinan dalam beragama (aqidah), ketaatan terhadap agama dan negara (syariat ubudiyah dan siayat) dan etika dalam bergaul sesama manusia sekalipun  orang asing dan non-muslim (akhlaq). Kesimpulannya, bahwa pesan dakwah dalam Tanbih TQN PP. Suryalaya yang ditulis pada tahun 1956 M menyimpan bimbingan hidup dalam beragama dan bernegara.
Assessment of flexicurity implementation in selected EU countries
Authors: Kuráková Ivana , Marasová Jana , Vallušová Anna
Published: September 2021

The flexicurity approach has taken official shape with the release of the Europe 2020 strategy, which recommended this approach for employment policies for all EU Member States. As Europe 2020 is in its final phase, the aim of the paper was to analyse the development of flexicurity implementation during the validity of the Europe 2020 strategy in selected countries (the Slovak Republic, the Netherlands, France and Poland) based on individual flexicurity indicators and to find out to what extent this development correlated with employment rate in the countries concerned. The results show that the positive development within the four proposed components of flexicurity may contribute to increasing employment rate in the given countries. On the other hand, it is important to perceive that the employment rate reflects the overall situation in the country and is influenced by many different determinants. At the end of the article, we present our view of the further development of flexicurity.
Analysis of provided financial support to the least developed districts with regard on situation on labour market
Authors: Beňová Zuzana
Published: September 2021

Regional differences are one of the most visible problems of the Slovak economy. Although they emerged in the time of the centrally planned economy before 1989, the successful transformation into a market-oriented economy could not eliminate them. The differences between the regions in the west and east of Slovakia are visible in all measurable indicators. The registered unemployment rate is one of the indicators that is most often used to express disparities between the western and eastern regions of the country. Also with regard to its reduction, a law was created on the support of the least developed districts. Based on it, a given group of districts is allowed to draw funds on terms that are more favourable. The following article analyses the impact of the provided financial funds on the labour market in the least developed districts.
Early reports of epidemiological parameters of the COVID-19 pandemic
Authors: Allen Keeley , Parry Ame Elizabeth , Glass Kathryn
Published: September 2021

Background: The emergence of a new pathogen requires a rapid assessment of its transmissibility, to inform appropriate public health interventions. Methods: The peer-reviewed literature published between 1 January and 30 April 2020 on COVID-19 in PubMed was searched. Estimates of the incubation period, serial interval and reproduction number for COVID-19 were obtained and compared. Results: A total of 86 studies met the inclusion criteria. Of these, 33 estimated the mean incubation period (4–7 days) and 15 included estimates of the serial interval (mean 4–8 days; median length 4–5 days). Fifty-two studies estimated the reproduction number. Although reproduction number estimates ranged from 0.3 to 14.8, in 33 studies (63%), they fell between 2 and 3. Discussion: Studies calculating the incubation period and effective reproduction number were published from the beginning of the pandemic until the end of the study period (30 April 2020); however, most of the studies calculating the serial interval were published in April 2020. The calculated incubation period was similar over the study period and in different settings, whereas estimates of the serial interval and effective reproduction number were setting-specific. Estimates of the serial interval were shorter at the end of the study period as increasing evidence of pre-symptomatic transmission was documented and as jurisdictions enacted outbreak control measures. Estimates of the effective reproduction number varied with the setting and the underlying model assumptions. Early analysis of epidemic parameters provides vital information to inform the outbreak response.
FORECASTING RICE INVENTORY IN INDONESIA USING THE ARIMA ALGORITHM METHOD
Authors: Kurniawan Faisal Rizki , Sutomo Rudi
Published: September 2021

Objective – The global development of the world is increasingly developing, and complex accompanied by the era of globalization, making various sectors of need to follow these developments. The agricultural sector, which is the main sector, especially in the need for food for every society, especially in Indonesia, is also touched by technological developments. Planning the supply of rice needed monthly is crucial so that there is no excess or shortage of the required rice stock.
Methodology – Made predictions from the amount of rice stock data using the CRISP-DM method to analyze the data and use the ARIMA Algorithm.
Findings – This research predicts the amount of rice production that will be carried out in the next few months by applying the forecasting or prediction method using the CRISP - DM method and using the ARIMA algorithm.
Novelty – This study predicts the amount of stock of an item using Rapidminer tools.
Performance Evaluation of The SIERA System at the Regional Assets Management Agency of the DKI Jakarta Provincial Government Using the COBIT 5 Framework
Authors: Ayu Nindita Nabilah , Setiawan Johan , Faza Ahmad
Published: September 2021

Objective –To measuring and knowing the level of capability, the value of gaps, and recommendations forimprovement for SIERA information system performance using the framework COBIT 5 based on the processAPO08 Manage Relationship and BAI07 Manage Change Acceptance and Transitioning.Methodology –This research uses a qualitative method and a quantitative method called the mix method. Thequalitative method is used to analyze the level of capability expected from the application of the SIERA informationsystem based on the results of interview answers. In contrast, the quantitative method is used to analyze the level ofcapability that has been achieved so far based on the results of a questionnaire that has been filled out by fourrespondents determined by a convenient sampling technique.Findings – The research found the results that the APO08 domain stopped at level 2, and the domain BAI07 stoppedat desired level 1, so corrective actions need to be taken to reach the level expected level 4.Novelty – By measuring the performance evaluation of the SIERA system, the Regional Asset Management Agencyof DKI Jakarta Province can determine the level of capability that has been achieved and the value of the gap withthe expected level of capability, and assisting the Regional Asset Management Agency of the DKI Jakarta ProvincialGovernment to take corrective actions based on recommendations from the findings in SIERA.Keywords: APO08 Manage Relationship, BAI07 Manage Change Acceptance and Transitioning, COBIT 5, DKIJakarta Regional Asset Management Agency
Ecossistemas de conhecimento sobre Indústria 4.0 no Brasil: uma análise bibliométrica
Authors: Nascimento Mateus Rebouças
Published: September 2021

Introdução: A produção de conhecimento na ciência se concretiza na interação colaborativa entre pesquisadores que investigam temáticas em comum, formando ecossistemas de conhecimento por meio de suas produções, neste sentido, o artigo objetiva mapear os principais atores (pesquisadores, universidades e agências de fomento) que constituem o ecossistema e os conhecimentos que o permeiam, em especial os centrados na indústria 4.0 em âmbito brasileiro. Método: Constitui uma pesquisa quantitativa, de cunho descritivo, utilizando técnicas bibliométricas mediante a uma análise dos trabalhos publicados sobre Indústria 4.0 na base de dados Web of Science nos últimos cinco anos, refinando a busca por país e selecionando o Brasil. Ao todo, 369 documentos produzidos no país foram analisados por meio do software métrico VOSviewer para construir redes de colaboração. Resultados: Destacam-se os autores Eduardo de Freitas Rocha Loures e Fernando Deschamps como principais produtores de conhecimento no ecossistema, bem como a CAPES e o CNPQ como atores norteadores no financiamento de pesquisas sobre a Indústria 4.0, as quais foram desenvolvidas no espaço da Universidade de São Paulo e Universidade Federal de Santa Catarina.  Conclusão: Os ecossistemas de conhecimento na Indústria 4.0 são formados por universidades e agências de fomento públicas, que utilizam recursos para desenvolver no país tecnologias de inteligência artificial, internet das coisas, sistemas ciberfísicos, dentre outros conhecimentos norteadores.
Topical Cyclosporine A 0.05% for the Treatment of Dry Eye Disease
Authors: Elzlitni Naeima M. , Bukhatwa Samar A. , Eldressi Sabah S.
Published: September 2021

Dry eye disease (DED) is a common clinical condition that challenges ophthalmologists. Topical Cyclosporine A is an anti-inflammatory therapy being approved by the Food and Drug Administration (FDA) for the therapy for DED. This study aimed to evaluate the efficacy and pa- tient tolerability of topical Cyclosporine A 0.05% for the treatment of DED. A total of 87 patients diagnosed with DED were included in this study. Dry eye symptoms (foreign body sensation, burn- ing, and pain) were scored. As a baseline measurement, the tear break-up time test (TBUT) and the Schirmer’s test were performed for all the patients. Cyclosporine A 0.05% was given topically twice daily to all the patients for four months. They were followed up every month for a period of four months. The clinical signs (Schirmer’s test, the TBUT), and the symptoms scores, were record- ed for each visit. The mean age of the patients was 57.25±9.70 years (Range 32 - 80 years); 25 males (28.7%) and 62 females (71.3%). Out of them, 23 (26.4%) cases had Sjögren’s syndrome, and 12 (13.7%) cases had previous LASIK (laser in-situ keratomileusis). The symptoms score of the cases improved from (4.95±1.73) pretreatment to (0.40±.70) four months after treatment (P <0.001). The Schirmer’s test results improved from (4.10 ±1.089) pretreatment to (10.80±2.40) four months post-treatment (P <0.0001), and the TBUT test results improved from (5.54±1.77 s) pre- treatment to (12.95±3.12 s) four months post-treatment (P <0.0001). Only seven patients (8%) de- veloped ocular side effects in the form of redness, pain, and systemic side effects in the form of headache. In conclusion, Cyclosporine A 0.05% eye drops is an effective treatment for DED, im- proving both signs and symptoms of DED with few ocular side effects.