bluuebunny/crossref_metadata_2025 huggingface dataset:
An Ensemble of Global and Local-Attention Based Convolutional Neural Networks for COVID-19 Diagnosis on Chest X-ray Images
Authors: Afifi Ahmed , Hafsa Noor E , Ali Mona A. S. , Alhumam Abdulaziz , Alsalman Safa
Published: January 2021

The recent Coronavirus Disease 2019 (COVID-19) pandemic has put a tremendous burden on global health systems. Medical practitioners are under great pressure for reliable screening of suspected cases employing adjunct diagnostic tools to standard point-of-care testing methodology. Chest X-rays (CXRs) are appearing as a prospective diagnostic tool with easy-to-acquire, low-cost and less cross-contamination risk features. Artificial intelligence (AI)-attributed CXR evaluation has shown great potential for distinguishing COVID-19-induced pneumonia from other associated clinical instances. However, one of the associated challenges with diagnostic imaging-based modeling is incorrect feature attribution, which leads the model to learn misguiding disease patterns, causing wrong predictions. Here, we demonstrate an effective deep learning-based methodology to mitigate the problem, thereby allowing the classification algorithm to learn from relevant features. The proposed deep-learning framework consists of an ensemble of convolutional neural network (CNN) models focusing on both global and local pathological features from CXR lung images, while the latter is extracted using a multi-instance learning scheme and a local attention mechanism. An inspection of a series of backbone CNN models using global and local features, and an ensemble of both features, trained from high-quality CXR images of 1311 patients, further augmented for achieving the symmetry in class distribution, to localize lung pathological features followed by the classification of COVID-19 and other related pneumonia, shows that a DenseNet161 architecture outperforms all other models, as evaluated on an independent test set of 159 patients with confirmed cases. Specifically, an ensemble of DenseNet161 models with global and local attention-based features achieve an average balanced accuracy of 91.2%, average precision of 92.4%, and F1-score of 91.9% in a multi-label classification framework comprising COVID-19, pneumonia, and control classes. The DenseNet161 ensembles were also found to be statistically significant from all other models in a comprehensive statistical analysis. The current study demonstrated that the proposed deep learning-based algorithm can accurately identify the COVID-19-related pneumonia in CXR images, along with differentiating non-COVID-19-associated pneumonia with high specificity, by effectively alleviating the incorrect feature attribution problem, and exploiting an enhanced feature descriptor.
The Fatty Acid Lipid Metabolism Nexus in COVID-19
Authors: Tanner Jerome E. , Alfieri Caroline
Published: January 2021

Enteric symptomology seen in early-stage severe acute respiratory syndrome (SARS)-2003 and COVID-19 is evidence of virus replication occurring in the intestine, liver and pancreas. Aberrant lipid metabolism in morbidly obese individuals adversely affects the COVID-19 immune response and increases disease severity. Such observations are in line with the importance of lipid metabolism in COVID-19, and point to the gut as a site for intervention as well as a therapeutic target in treating the disease. Formation of complex lipid membranes and palmitoylation of coronavirus proteins are essential during viral replication and assembly. Inhibition of fatty acid synthase (FASN) and restoration of lipid catabolism by activation of AMP-activated protein kinase (AMPK) impede replication of coronaviruses closely related to SARS-coronavirus-2 (CoV-2). In vitro findings and clinical data reveal that the FASN inhibitor, orlistat, and the AMPK activator, metformin, may inhibit coronavirus replication and reduce systemic inflammation to restore immune homeostasis. Such observations, along with the known mechanisms of action for these types of drugs, suggest that targeting fatty acid lipid metabolism could directly inhibit virus replication while positively impacting the patient’s response to COVID-19.
Chimeric Hemagglutinin-Based Live-Attenuated Vaccines Confer Durable Protective Immunity against Influenza A Viruses in a Preclinical Ferret Model
Authors: Liu Wen-Chun , Nachbagauer Raffael , Stadlbauer Daniel , Strohmeier Shirin , Solórzano Alicia , Berlanda-Scorza Francesco , Innis Bruce L. , García-Sastre Adolfo , Palese Peter , Krammer Florian , Albrecht Randy A.
Published: January 2021

Epidemic or pandemic influenza can annually cause significant morbidity and mortality in humans. We developed novel chimeric hemagglutinin (cHA)-based universal influenza virus vaccines, which contain a conserved HA stalk domain from a 2009 pandemic H1N1 (pH1N1) strain combined with globular head domains from avian influenza A viruses. Our previous reports demonstrated that prime-boost sequential immunizations induced robust antibody responses directed toward the conserved HA stalk domain in ferrets. Herein, we further followed vaccinated animals for one year to compare the efficacy and durability of these vaccines in the preclinical ferret model of influenza. Although all cHA-based immunization regimens induced durable HA stalk-specific and heterosubtypic antibody responses in ferrets, sequential immunization with live-attenuated influenza virus vaccines (LAIV-LAIV) conferred the best protection against upper respiratory tract infection by a pH1N1 influenza A virus. The findings from this study suggest that our sequential immunization strategy for a cHA-based universal influenza virus vaccine provides durable protective humoral and cellular immunity against influenza virus infection.
On the Rainfall Triggering of Phlegraean Fields Volcanic Tremors
Authors: Scafetta Nicola , Mazzarella Adriano
Published: January 2021

We study whether the shallow volcanic seismic tremors related to the bradyseism observed at the Phlegraean Fields (Campi Flegrei, Pozzuoli, and Naples) from 2008 to 2020 by the Osservatorio Vesuviano could be partially triggered by local rainfall events. We use the daily rainfall record measured at the nearby Meteorological Observatory of San Marcellino in Naples and develop two empirical models to simulate the local seismicity starting from the hypothesized rainfall-water effect under different scenarios. We found statistically significant correlations between the volcanic tremors at the Phlegraean Fields and our rainfall model during years of low bradyseism. More specifically, we observe that large amounts and continuous periods of rainfall could trigger, from a few days to 1 or 2 weeks, seismic swarms with magnitudes up to M = 3. The results indicate that, on long timescales, the seismicity at the Phlegraean Fields is very sensitive to the endogenous pressure from the deep magmatic system causing the bradyseism, but meteoric water infiltration could play an important triggering effect on short timescales of days or weeks. Rainfall water likely penetrates deeply into the highly fractured and hot shallow-water-saturated subsurface that characterizes the region, reduces the strength and stiffness of the soil and, finally, boils when it mixes with the hot hydrothermal magmatic fluids migrating upward. The structural collapse of the saturated fractured soil and the mixing of the meteoric fluid with the hot deep fluids triggers the local seismic activity.
Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides
Authors: Lu Manjing , Wang Jiaqi , Wang Yuzhong , He Zhengguang
Published: January 2021

Chemical synthetic pharmaceutical wastewater has characteristics of high concentration, high toxicity and poor biodegradability, so it is difficult to directly biodegrade. We used acid modified attapulgite (ATP) supported Fe-Mn-Cu polymetallic oxide as catalyst for multi-phase Fenton-like ultraviolet photocatalytic oxidation (photo-Fenton) treatment with actual chemical synthetic pharmaceutical wastewater as the treatment object. The results showed that at the initial pH of 2.0, light distance of 20 cm, and catalyst dosage and hydrogen peroxide concentration of 10.0 g/L and 0.5 mol/L respectively, the COD removal rate of wastewater reached 65% and BOD5/COD increased to 0.387 when the reaction lasted for 180 min. The results of gas chromatography-mass spectrometry (GC-MS) indicated that Fenton-like reaction with Fe-Mn-Cu@ATP had good catalytic potential and significant synergistic effect, and could remove almost all heterocycle compounds well. 3D-EEM (3D electron microscope) fluorescence spectra showed that the fluorescence intensity decreased significantly during catalytic degradation, and the UV humus-like and fulvic acid were effectively removed. The degradation efficiency of the nanocomposite only decreased by 5.8% after repeated use for 6 cycles. It seems appropriate to use this process as a pre-treatment for actual pharmaceutical wastewater to facilitate further biological treatment.
Two-Stage Complete Deroofing Fistulotomy Approach for Horseshoe Fistula: Successful Surgery Leaving Continence Intact
Authors: Usui Asami , Ishiyama Gentaro , Nishio Akihiko , Kawamura Maiko , Kono Yukiko , Ishiyama Yuji
Published: January 2021

Purpose: Surgery of the horseshoe fistula is challenging due to its complex configuration and sphincter muscle involvement. Complete deroofing fistulotomy for horseshoe fistula is highly curative with the eradication of all fistulous lesions but has been discredited for its high incontinence rate. It was replaced with the more conservative Hanley’s procedure leaving the lateral tracts intact, despite its issue of recurrence. Our study aimed to report the outcomes of a procedure dividing complete deroofing fistulotomy for horseshoe fistula into 2 stages to avoid impairment of sphincter function.Methods: We retrospectively reviewed 139 patients who underwent surgery for horseshoe fistula using the 2-stage complete deroofing fistulotomy method between 2014 and 2017. The first surgery deroofed the lateral tracts with an arch-like incision severing the anococcygeal ligament. The primary lesion was also drained and curetted. A seton was placed in the primary tract which was laid open in the second surgery after the lateral wound had partially healed.Results: Recurrence was observed in 12 patients. All were superficial recurrences except for 1, in which recurrence was confirmed in the primary lesion. Those with blind intersphincteric upward extensions had a significantly higher recurrence rate. Furthermore, patients who resided far from the hospital and could not make visits for frequent wound inspections also had a significantly higher recurrence rate. No patient had any continence issues at the end of the follow-up period.Conclusion: Managing horseshoe fistula with the 2-stage deroofing fistulotomy approach allows for eradication of the fistula tract without compromising anal sphincter function.
La Educación Ambiental en la Formación Inicial del Profesional Universitario
Authors: Leyva Leyva Guillermo Pablo , Mancebo Ayala Ricardo , Ochoa Nápoles Yuleisi
Published: January 2021

La formación de profesionales de la educación superior en Cuba, parte desde su concepción curricular a dotarlos de una serie de elementos de carácter técnico, metodológico y didáctico hacia una concepción de educación ambiental, teniendo en cuenta las estrategias educativas y el trabajo sistemático en la labor docente metodológica y científico investigativa, el tratamiento a los objetivos de la agenda 2030 y la Tarea Vida, del cual se estructuran las acciones fundamentales para lograr formar en ellos valores atemperados a las directrices que el gobierno y el ministerio de ciencia, tecnología y medio ambiente que junto a la academia de ciencias de Cuba definen para ello en pos de la sostenibilidad del país.
Big Data Analytics Usage and Business Performance: Integrating the Technology Acceptance Model (TAM) and Task Technology Fit (TTF) Model
Authors: Gangwar Hemlata
Published: January 2021

The purpose of this study is to propose a unified model integrating both the technology acceptance model (TAM) and task technology fit (TTF) model, and explore the organizational and environmental fit of the integrated model in order to investigate usage of Big Data Analytics and its effect on business performance. A questionnaire was used to collect data from 280 companies in CPG & Retail, Healthcare, Banking and Telecom in India. The data were analysed using exploratory and confirmatory factor analyses. Further, structural equation modelling was used to test the proposed model. The findings show that the research model for integrating the TAM for adoption and TTF model for utility provides a more comprehensive understanding of Big Data Analytics usage. The study identified task technology fit , individual technology fit, organizational data fit, organizational process fit, and business strategy fit as Tidd important variables for affecting Big Data Analytics usage using perceived ease of use (PEOU) and perceived usefulness (PU) as mediating variables. Competitive fit and partner support/customer fit were also found to be directly affecting Big Data Analytics usage, which in turn has significant influence on business performance. The model explained 71.4 percent of Business performance. The integrated model may be used as a guideline to ensure a positive outcome of Big Data Analytics usage in organizations. This study combined both the key ideas of TAM and TTF to show that they were necessary in predicting Big Data Analytics usage and business performance.
The Impact of IT‑Business Alignment on SME Performance: The Mediating Effects of Strategic Collaboration, Coordination, and Responsiveness
Authors: Bi Rui
Published: January 2021

The alignment between information technology (IT) and business strategy is regarded as an ongoing issue for information systems (IS) researchers and practitioners. Although prior studies suggest the enabling role of IT‑business alignment on firm performance, our understanding of the processes through which such gains are achieved in the small‑to‑medium enterprise (SME) context still remains unclear. Moreover, there is limited research exporing how SMEs employ the alignment between IT and business strategy to work closely with their business partners in order to achieve business competences. In order to address these research gaps, this study investigates whether and how IT‑business alignment enables SMEs to achieve performance goals through developing strategic business activities effectively and efficiently. Using structural equation modelling analyses of survey responses collected from 211 Australian high growth SMEs, we find positive, significant, and impactful linkages between IT‑business alignment, strategic collaboration, coordination, responsiveness, and SME performance. The results also show that strategic collaboration, coordination, and responsiveness fully mediate the relationship between IT‑business alignment and SME performance. This study contributes to the IS research by providing empirically‑supported explanations for the critical role of IT‑business alignment in SME success. More significantly, through investigating the effect of IT‑business alignment at the inter‑mediate business process level, this research provides new insights to understand the underlying influential mechanisms of IT‑business alignment in the SME context. These findings have important implications for SME business managers.
Information Systems Values: A Study of the Intranet in Three French Higher Education Institutions
Authors: Cohard Philippe
Published: January 2021

Evaluation of performance of the Information System (IS) function has long been a concern of senior management in organisations. The IS function can impact competitive advantage which is why executives regularly look for evidence of returns on IT investments. The paper reports on a study which investigated how patrimonial value (inherent or actual quality of hardware, software and know‑how) and use value (contribution to the business) influence the success and organisational impact of an intranet. This paper proposes a set of principles for the conduct and implementation of analysis of these two intangible values of IS function. Research was conducted in three field studies of business and engineering schools in France. The data collected in questionnaires were analysed using the PLS structural equation method. This research provides theoretical contributions with a model giving a deeper comprehension of patrimonial value and use value of information systems, as well as explaining the relationships between these two values, success and organisational impact.
A Comparison between Agile and Traditional Software Development Methodologies
Authors: Islam A.K.M Zahidul , Ferworn Dr. Alex
Published: January 2021

Agile and Traditional software development methodologies, both are being used in different projects of software development industry. Agile software development technology is an incremental software development process. On the other hand, Traditional software development methodologies or plan-driven software can be explained as a more formal approach to software development. These methodologies come with a fully completed set of systems requirements followed by an architectural and high level design development and inspiration.
This research focuses on the software development life cycle, role and responsibilities of agile and traditional software development methodologies and their technical practices. It performs a comparison between both the software development methodologies. Here a questionnaire is used to collect data from the various experts of different IT related organizations of Bangladesh. In the questionnaire, there are three sections to bring out the individual knowledge from different organization, methodology knowledge of the respondents and software development experience of the respondents. The respondents are mainly software engineer, system analyst, software developer etc. A comparison is also performed between this survey result and a survey done by Ambler.
Smart Lock using Image Recognition
Authors: Hassan Afnanul , Fahamida Zaria , Sen Proloy , Hossain Dr. Syed Akhter
Published: January 2021

In the 21st century, for a digital lifestyle in a smart city, security is one of the core ingredients to ensure digital continuity. The existing smart security technologies use a smartphone, card, and fingerprint that need additional devices to carry or can spread out infectious diseases. Now it is high time to think about an additional device free and more time-consuming technique. So, an intelligent system is proposed in this paper to secure our doors with face authentication. The human face is a unique and easy identifying feature of a human. The registered user’s image is saved in the device as a dataset to train the lock. The system recognizes the registered faces very fast and controls the hardware part to be unlocked. The system is capable of detecting and recognizing human faces from a real-time video. It is usable in the door lock, car lock, hutch, and many more security purposes.
The Ideology and Translations of the Quran by the Orientalists: A Comparative Study of Richard Bells Translation
Authors: Rezk Elnemr Mahmoud Ibrahim
Published: January 2021

This research seeks to examine the relation between the ideology and translation; moreover, it focuses on the orientalist English translations of the Qur’an “The Qur’an: Translated, with a Critical Re-arrangement of the Surahs” by Richard Bell. The research discusses Prophet Muhammad and the historical situation of the Qur’an according to the orientalists’ perspective, the origin of the Qur’an, the form, structure, and style of the Qur’an, the compilation of the Qur’an, the chronological order of Qur’anic and verses, stages of the revelation and the sources of the Qur’an, the biography of Richard Bell, features of his translation, objectives, sources, readership, motives, structure, method and the period to produce. After that, exploring the ideological effects of translation through exploring the mistranslation and misinterpretation of the translation. Lastly, Richard Bell’s competence and mindset.
Identification of Factors Affecting the Employability of Information Technology Graduates
Authors: Weerathunga Mihiran , Mallawarachchi Yashas
Published: January 2021

Graduate employability has been a typical subject among analysts, governments and advanced education frameworks around the globe uniquely in Sri Lanka but also in the world. In any case, while there is a ton of data and various models that advise on graduate employability, Specially what are the weak areas in the current education framework in universities (State and non state) the system change necessarily according to the industry requirements has been constrained exact research around there. Besides, most employability considers have been led in the Sri Lanka and different pieces of the world, In spite of Information Technology (IT) being one of the most looked for after capability by Sri Lankans, regardless it stays indistinct with respect to why numerous IT graduates battle to verify occupations after graduation.
Metallurgical and Corrosion Property of Additive Manufactured Titanium Alloy-Ti6Al4V
Authors: Mahamood R. M. , Marvins T. , Abdulrahman K. O. , Shuaib-Babata Y. L. , Adebisi J. A. , Akinlabi S. A. , Hassan S. , Akinlabi E. T.
Published: January 2021

Additive manufacturing (AM) is an important manufacturing technology that has changed the way products are designed and manufactured. Laser Metal Deposition (LMD), an AM technology, has the capability of producing components using a 3-Dimensional CAD model, through a layer by layer formation process just like any other AM technology. In this study, the influence of the scanning speed on the corrosion property of Titanium alloy-Ti6Al4V using LMD process was investigated. The scanning speed varied between 0.02 m/s and 0.14 m/s while other processing parameters were kept constant. The electrochemical corrosion test was conducted in sodium chloride (NaCl) solution. The result revealed that the corrosion resistance property was found to increase with the scanning speed.
Promising apple clonal rootstocks in Crimea
Authors: Танкевич Валентина Викторовна
Published: January 2021

Современная экономика диктует необходимость быстрой и эффективной окупаемости затрат, вложенных в производство продукции садоводства. Это требует интенсификации отрасли. Одним из путей решения поставленных задач является закладка садов на клоновых подвоях, обеспечивающих высокое, стабильное плодоношение, с плодами отменных вкусовых качеств, подбор новых подвоев, приспособленных к условиям Крыма и не уступающих по комплексу хозяйственно-биологических свойств районированным в регионе. В статье освещены результаты многолетнего изучения 14 клоновых подвоев в сочетании с 2 сортами яблони. Определена сила роста изучаемых привойно-подвойных комбинаций в почвенно-климатических условиях Предгорного Крыма. Комбинации сортов Аскольда и Ренет Симиренко с подвоями ЕМ-IX, КД 4, КД 5 по показателям параметров кроны относятся к слаборослой группе. Деревья на К 104 по силе роста занимают положение промежуточное между ЕМ-IX и ММ-106, но имеют хорошо развитую корневую систему и компактную форму кроны. Выделенные комбинации рано вступают в плодоношение (на 2-3 год). Средний урожай таких насаждений равен 24,4-30,6 т/га. Отобранные подвои обладают большим биологическим потенциалом и эффективными хозяйственно-биологическими свойствами и представляют интерес для южного садоводства.

Modern economy prescribes the necessity of rapid and efficient returns of costs invested in horticultural production. It requires an intensification of the industry. One of the ways to achieve this goal is to establish gardens on clonal rootstocks ensuring high and stable crop-bearing with fruits of excellent taste, selection of new rootstocks, adapted to the conditions of Crimea and not inferior in terms of the economical and biological properties to those already recognized in the region. The article highlights the results of a long-term study of 14 clonal rootstocks in combination with 2 apple varieties. We determined the power of growth of the grafting and rootstock pairs in the soil and weather conditions of the Piedmont Crimea. Combinations of ‘Ascold’ and ‘Renet Simirenko’ varieties with rootstocks EM - IX, KD 4, KD 5 in terms of crown parameters belong to a dwarf group. By the power of growth, the trees on K 104 are intermediate between EM - IX and MM - 106, but they have a well-developed root system and compact shape of the crown. The obtained combinations come into fruiting early (in the 2nd-3d year). The average yield of such plantations is 24.4-30.6 t / ha. The selected rootstocks have great biological potential and effective economical and biological properties proving to be promising for southern horticulture.
Competitiveness as a Decisive Criterion for Sustainability
Authors: Matolcsy György
Published: January 2021

Competitiveness and sustainability are inseparable concepts. Competitiveness cannot be interpreted in the short term, and thus it cannot exist without sustainability as well. At both the corporate and national economy level, only those who can maintain their outstanding performance, in the long run, are the winners in global competition. There are two roads to achieving these two goals simultaneously, and they can even be followed at the same time. On the one hand, moving away from quantitative factors towards quality, and on the other hand, looking for new resources and making old resources unlimited by using them in a sustainable, “green” manner. With the development of digitalisation, data is becoming a more important resource than ever before, while money and access to energy may become unlimited. No segment of the economy can ignore revolutionary changes, such as the green and digital transition, but proper cooperation between the state and the market is necessary to achieve and maintain competitiveness and sustainability.
Sustainable Budget and the Sustainability Appearing in the Budget
Authors: Domokos László , Pulay Gyula
Published: January 2021

Fiscal sustainability has become one of the most important requirements of fiscal policy over the past two to three decades. Hungary’s Fundamental Law stipulates that Hungary enforces the principle of sustainable budget management. In international practice, fiscal sustainability is often identified with preserving the solvency of the state and the sustainable financing of public debt. The risks related to the fulfilment of the constitutional requirement to reduce public indebtedness are also regularly assessed by the State Audit Office, for which it has developed its own risk analysis method. The authors of the article define fiscal sustainability as a series of budgets that provide coverage for the public goods needs of present generations while increasing the capacity and opportunity of future generations to meet their own future needs. Based on this, and building on the resolution of the National Assembly and international good practices, they present how the coverage of Sustainable Development Goals can be integrated into the respective budgets in a transparent and accountable way.
Fenntartható költségvetés és a költségvetésben megjelenő fenntarthatóság
Authors: Domokos László , Pulay Gyula
Published: January 2021

A költségvetési fenntarthatóság az elmúlt két-három évtizedben a költségvetési politika egyik legfontosabb követelményévé vált. Az Alaptörvény is rögzíti, hogy Magyarország a fenntartható költségvetési gazdálkodás elvét érvényesíti. A nemzetközi gyakorlatban a költségvetési fenntarthatóságot gyakran az államadósság folyamatos finanszírozhatóságának a követelményével azonosítják. Az állami eladósodottság csökkentésére vonatkozó alkotmányos követelmény teljesíthetőségének kockázatait az Állami Számvevőszék is rendszeresen értékeli, erre saját kockázatelemzési módszert dolgozott ki. A cikk szerzőinek definíciója szerint a költségvetési fenntarthatóság olyan költségvetések sorozata, amelyek fedezetet nyújtanak a jelen generációk közjavak iránti szükségleteinek kielégítéséhez, és egyúttal növelik a jövő generációk képességét és lehetőségét saját jövőbeni szükségleteik kielégítéséhez. Ebből kiindulva, valamint az Országgyűlés határozatára és a nemzetközi jó gyakorlatokra építve bemutatják, hogy a fenntartható fejlődési célok fedezetét miként lehet a mindenkori költségvetésekbe átlátható és elszámoltatható módon beépíteni.
A koronavírus-válság, a fenntartható fejlődés és az ösztönző állam modellje
Authors: Báger Gusztáv , Parragh Bianka
Published: January 2021

A koronavírus-válság és a fenntartható fejlődés kihívásai szükségessé teszik az ösztönzőállam-modell hatékony működését. Jelen tanulmány e cél elérését szolgáló kutatásnak a "filozófiáját", irányait és első eredményeit mutatja be. Szemléletünkben a pénzügyi és etikai ösztönzők piaci szereplőkre gyakorolt pozitív és negatív szinergia hatásainak vizsgálatával eljuthatunk az ösztönző állam céljainak a megvalósulásához. E szemlélet és a kapcsolódó hatáselemzés alapján megállapítható, hogy Magyarország válságkezelése 2020. júniusban a leghatékonyabbnak, októberben pedig a harmadik leghatékonyabbnak bizonyult az Európai Unióban. Kutatásunk másik fő iránya a fenntartható fejlődés jelenleginél sokoldalúbb, a pénzügyi fenntarthatósággal kiegészített négydimenziós modellel történő megalapozása, kiemelt figyelemmel a fenntartható fejlődés és a versenyképesség szoros összefüggésrendszerére. E modellben, kiemelten annak dinamizálásában meghatározók a globálisan érvényesülő megatrendek és az ENSZ fenntartható fejlődési céljai eléréséhez hozzájáruló hazai eredményeink.
Hatikvah
Authors: Santos Mauro Camilo de Chantal , Oliveira Patrícia Valadão Almeida de
Published: January 2021

Este artigo trata de elementos musicais e poéticos que, ao longo de séculos, resultaram no Hino de Israel, Hatikvah. Dados sobre a tradição musical judaica e sobre a gênese da melodia do hino e seu percurso até sua morada final como melodia máxima do povo judaico serão abordados, bem como a apresentação de um arranjo de sua melodia em partitura para voz e piano, criada especialmente para este estudo, acrescida de análise sobre aspectos musicais como dinâmica e relação texto-música.
Crime Behavioural Tendency of School-Going Adolescents in Ibadan: Home Background, Self- Regulation and Parenting Processes as Predictors
Authors: OMOPONLE ADEWUYI H , OLANREWAJU MURAINA K.
Published: January 2021

The study investigated the crime behavioural tendency of school-going adolescents in Ibadan: home background, self-regulation, parenting processes as predictors. The study adopted a descriptive research design of ex-post-facto type. Multistage sampling method was used in selecting 500 participants from 5 local government areas in Ibadan, Oyo State. The variables were measured validated instrument which with reliability co-efficient of 0.81. The data obtained were analyzed using Pearson Product Moment Correlation and multiple regression at 0.05 level of significance. The result showed that there was a significant correlation among home background, self-regulation and parenting processes and crime behavioural tendency of adolescents, self-regulation made the most significant relative contributions followed by parenting processes and home background. Therefore, on the basis of the findings, it is recommended that adolescents and parents should be re-orientated on the need to provide appropriate need and support for the adolescents and that counselling psychologists should intensify their effort to organize conferences on the implications of these factors (such as self-regulation, parenting processes and home background among others) to crime behavioural tendency of adolescents.
Navigation Support for Monitoring the Underlying Surface From UAV with a Passive Optical Sensor
Authors: Starovoytov E. I.
Published: January 2021

На сегодняшний день с помощью беспилотных летательных аппаратов (БПЛА) решается широкий круг задач, в том числе мониторинг окружающей среды и обследование зон чрезвычайных ситуаций, при которых выполняется локация различных объектов на подстилающей поверхности и их последующая привязка к географическим координатам.

Развитие беспилотных систем в настоящее время тесно связано с оптическими датчиками, используемыми на БПЛА всех типов. Пассивные оптические датчики имеют малые массу и габариты, потребляют небольшую мощность от бортовой сети электропитания, при этом они могут измерять дальности до объектов со сложной конфигурацией и ненормированным коэффициентом отражения поверхности.

Цель данной работы – анализ требований к навигационной аппаратуре при измерении дальности монокулярным пассивным оптическим датчиком до статических наземных объектов с борта БПЛА и их последующей привязке к географическим координатам.

Выполнены оценки разных вариантов осуществления оптической локации наземных объектов параллаксным методом измерений с оптической и навигационной аппаратурой на борту легких БПЛА малого радиуса действия, мини- и микро-БПЛА. В качестве источников навигационных данных может быть использована аппаратура спутниковой навигации, телекамеры, бесплатформенная инерциальная навигационная система, барометрический высотомер и цифровой компас.

При использовании рассматриваемых навигационных датчиков обеспечивается измерение дальностей до 1000 м с относительной погрешностью не более 10 %. При привязке объектов к географическим координатам оценки погрешности как для прямолинейной, так и для сложной траектории полета БПЛА различаются не более чем на 4,1 м для всех типов навигационных датчиков, а позиционная ошибка не превышает 150 м при величине ошибки по высоте не более 40 м.

В ранее известных работахоценка измерений выполнялась на малом базисе (уход БИНС не учитывался), а привязка обнаруженных объектов к географическим координатам не выполнялась.

Результаты работы могут применяться в разработке навигационных систем различных БПЛА и беспилотных систем мониторинга наземной обстановки.
Glycerin-containing Working Fluids for Hydraulic Drives for Special Purposes
Authors: Efremova K. D. , Pilgunov V. N.
Published: January 2021

The cavitation properties of a liquid must be taken into account in the engineering design of hydraulic machines and devices for hydraulic automation in cases when in their working process the absolute pressure in the liquid may drop below atmospheric, and the liquid is in a rarefied state for a certain time. Cold boiling, which occurs at a relatively low temperature and reduced absolute pressure inside or on the surface of the liquid, is considered as hydrostatic cavitation, if the liquid is stationary, or as hydrodynamic cavitation, if the liquid enters conditions under which the velocity head sharply increases in the flow section and the absolute pressure.

In accordance with the theory of cavitation, the first phase of cavitation occurs when the absolute pressure in the degassed liquid drops to the value of the saturated vapor pressure and the air dissolved in the liquid, leaving the intermolecular space, turns into microbubbles of undissolved air and becomes a generator of cavitation "nuclei". Of practical interest is a quantitative assessment of the value of the minimum permissible absolute pressure in a real, partially or completely degassed liquid, at which hydrostatic cavitation occurs.

Since the pressure of saturated vapor of a liquid is, to a certain extent, associated with the forces of intermolecular interaction, it is necessary to have information on the cavitation properties of technical solutions, including the solution of air in a liquid, since a solute can weaken intermolecular bonds and affect the value of the pressure of saturated vapors of the solvent.

 The article describes an experiment carried out by the authors to evacuate liquids. During the experiment, evacuation of various liquids was carried out using a developed hydraulic vacuum pump with a pneumatic drive.

The article presents the technologies of hydrostatic and hydrodynamic degassing of liquids used in the experiment.

As a result of experimental studies of the cavitation properties of pure glycerin and glycerin in the form of a 49/51% solution in water, mineral oil and aviation kerosene, quantitative estimates of the permissible absolute pressure in the considered technical fluids and solutions were obtained, its dependence on the saturated vapor pressure, the influence of the degree of hydrodynamic degassing the liquid, and the amount of dissolved substance in it on the strength of the liquid to rupture.

In the process of studying the cavitation properties of solutions, it was found that the level of permissible absolute pressure in the solution is greater than that of the solvent. It has been suggested that dissolved solid, liquid or gaseous substances weaken the intermolecular bonds of the solvent and increase the pressure of its saturated vapor.

On the basis of the experimental studies, a method for determining the highest rarefaction in solvents and in glycerol solutions has been developed. In addition, a comparative assessment of the cavitation properties of the considered technical fluids is given.
ЕКСПОРТНИЙ ПОТЕНЦІАЛ ХЕРСОНСЬКОЇ ОБЛАСТІ ТА МОЖЛИВОСТІ ЙОГО РЕАЛІЗАЦІЇ НА СВІТОВОМУ РИНКУ
Authors: Шепель Тетяна
Published: January 2021

Розглянуто головні проблеми зовнішньоекономічної діяльності Херсонської області. Визначено експортний потенціал та проаналізовано динаміку зовнішньої торгівлі. Наведено основні переваги галузей народного господарства в експортно-імпортних відносинах регіону. Проаналізовано динаміку товарної та географічної структур експортного потенціалу Херсонщини. Обґрунтовано необхідність збільшення частки наукомісткої продукції у структурі експорту області. Визначено перспективи розвитку зовнішньоекономічних відносин Таврії із країнами світу, з урахуванням сучасних торговельно-економічних інтересів. Узагальнено головні, негативні чинники впливу на розвиток зовнішньоекономічної діяльності Херсонської області.
ANALISIS KONTRIBUSI PAJAK HOTEL TERHADAP PENDAPATAN ASLI DAERAH (PAD) KOTA BENGKULU
Authors: Febriansyah Erwin , Febrianti Desi , Yunita Melda , Fadrul Fadrul
Published: January 2021

Penelitian ini dilakukan dikantor dinas pendapatan asli daerah kota Bengkulu. Judul penelitian ini adalah Analisis Kontribusi Pajak Hotel Terhadap Pendapatan Asli Daerah (PAD) Kota Bengkulu periode 2017-2018. Penelitian ini di dasari pentingnya kontribusi pajak hotel terhadap pandapatan asli daerah (PAD). Pendapatan asli daerah (PAD) dapat dipengaruhi oleh beberapa faktor. Faktor tersebut diduga adalah faktor pajak hotel. Penelitian ini bertujuan untuk menganalisis kontribusi pajak hotel terhadap pendapatan asli daerah (PAD) kota Bengkulu. Obyek penelitian ini adalah Badan Pendapatan Asli Daerah Kota Bengkulu, dengan metode analisis pendekatan deskriftif. Dengan pengambilan sampel kontribusi pajak hotel dari tahun 2017-2018. Metode pengumpulan data menggunakan teknik observasi dan wawancara. Dengan menggunakan teknik analisis kontribusi, hasil penelitian ini dapat disimpulkan bahwa variabel Kontribusi pajak hotel terhadap pendapatan asli daerah pada tahun 2017 sebesar 4,3% dan pada tahun 2018 mengalami kenaikan sebesar 5,1%. Dalam meningkatkat pendapatan asli daerah. meskipun terbilang meningkat akan tetapi konribusi pajak hotel masih terbilang sangat kurang ini.Kata Kunci:  Pendapatan Hotel, Pendapatan Asli Daerah (PAD)
HUMORAL IMMUNE RESPONSE IN CROSS-BRED HEIFERS IMMUNIZED WITH BRUCELLA ABORTUS STRAIN RB51 VACCINE IN MILITARY DAIRY FARM OF BANGLADESH
Authors: Rahman M. M. , Rahman M. S. , Rahman A. K. M. A. , Maruf A. A. , Hossain M. M. , Rana M. S. , Neubauer H
Published: January 2021

Background: Brucellosis is a chronic zoonotic disease with negligible mortality rate that might be the reason not to attract the concerned authority to prevent and eradicate it in low income endemic countries. Recently, it has been recognized as a re-emerging zoonotic disease not only in low income countries but also its eradicated developed world. Objective: The main objective was to determine the humoral immune response (HIR) in crossbred dairy heifers immunized with Brucella abortus strain RB51 vaccine by using indirect ELISA Materials and Methods: Each of the 20 randomly selected B. abortus sero-negative crossbred (Holstein-Friesian  Local) dairy heifers aged between 4 to 8 months old at the Military Dairy Farm received 2.0 ml imported commercial B. abortus SRB51 strain vaccine subcutaneously in the neck region at day 0 and then booster dose at 60 days after first vaccination with similar dose and route during the period from June to October 2020. Each of the collected serum samples of 20 heifers at day 0, 7, 14, 21, 28, 60, 90, 120 and 150 was tested to detect the antibody status by using commercial indirect ELISA kit. Results: The humoral immune response (HIR) in terms of antibody levels detected by OD values in the serum of immunized cross-bred dairy heifers by using B. abortus strain RB51 commercial vaccine resulted 0.097  0.0032 (mean  SE) OD value at 0 day (i.e. pre-immunization) and 0.108 ± 0.0032 at 7th day. After that, the OD value started to rise from day 14 (OD value 0.124 ± 0.0032) and reached to a peak level at 60 days (OD value 0.223  0.0032) with the initial vaccination. Booster vaccination inoculated at 60 days resulted peak antibody level in terms of OD value (0.313  0.0032) at the day 90 and then the antibody level started to decline from 120 days (OD value 0.242  0.0032) to 150 days (OD value 0.199 0.0032) in cross-bred dairy heifers. Conclusions: This study suggests that the commercial B. abortus RB51 strain vaccine has induced satisfactory HIR with initial inoculation and significantly higher HIR produced with a booster dose in crossbred heifers by using commercial I-ELISA. The presence of Brucella antibodies have importance on sero-diagnosis whereas the cell mediated immunity (CMI) plays major role in protection against brucellosis which needs further investigation in cross-bred heifers in Bangladesh. Keywords: Brucellosis, SRB51 vaccine, Humoral immune response, I-ELISA, Cross-bred heifers, Bangladesh
Multi-attribute Recognition,The key to Universal Neural Network
Authors: Wei Jinxin
Published: January 2021

To achieve the recognition of multi-attribute of object, I redesign the mnist dataset, change the color, size, location of the number. Meanwhile, I change the label accordingly. The deep neural network I use is the most common convolution neural network. Through test,we can conclude that we can use one neural network to recognize multi-attribute so long as the attribute difference of objects can be represented by functions. The concrete network(generation network) can generate the output which the input rarely contained from the attributes the network learned. Its generalization ability is good because the network is a continuous function. Through one more test, We can conclude that one neural network can do image recognition, speech recognition,and nature language processing and other things so long as the output node and the input node and more parameters add into the network. The network is universal so long as the network can process different inputs. I guess that the phenomenon of synaesthesia is the result of multi-input and multi-output. I guess that connection in mind can realize through the universal network and sending the output into input.
Caracterización de la competencia. Uso comprensivo del conocimiento científico en estudiantes de básica secundaria
Authors: Soto Jiménez Jhon Raúl , Flórez Nisperuza Elvira Patricia , Agudelo Arteaga Karen Patricia
Published: January 2021

Este artículo de reflexión presenta los resultados de la fase exploratoria de un proyecto de investigación de maestría en didáctica de las ciencias naturales de la Universidad de Córdoba, denominado “Desarrollo de un entorno blended learning para el fortalecimiento de la competencia uso comprensivo del conocimiento científico”, cuyo propósito fue identificar el nivel de competencia del uso comprensivo del conocimiento científico en los educandos. En la pesquisa se empleó el enfoque cualitativo, con método descriptivo, con la aplicación de las técnicas: observación a participantes y cuestionario. Los resultados demuestran que se requiere fortalecer el nivel de competencia en las habilidades de identificar, asociar y analizar para la comprensión del conocimiento científico, en ese sentido se propone una estrategia didáctica para fortalecer la competencia.
Anaesthesia risks for non-cardiac procedures in cardiac patients
Authors: Schure A
Published: January 2021

The number of patients with complex congenital heart disease (CHD) presenting for non-cardiac procedures is steadily increasing and more and more anaesthesiologists will be asked to participate in their care. This can be a very challenging task and will require adequate planning and preparation, but also some basic scientific inquiries.
Seed germination and growth dynamics of seedlings of tree species under introduction conditions
Authors: Magomedova B. M.
Published: January 2021

The article presents the results of laboratory and field germination of seeds of woody species. Also, some features of the initial stages of ontogenesis of woody plants in the conditions of mountainous Dagestan are considered. It was found that under the conditions of the Tsudakhar experimental base, a significant predominance of shoot growth is observed in all types of seedlings. Comparative analysis of growth traits in dynamics revealed that different soil and climatic conditions of different altitude gradients have a significant impact on the variability of all considered morphological traits. In all species, the maximum average values of traits were noted under the conditions of the CEB, i.e., these ecological conditions are more conducive to the manifes tation of the genotypic characteristics of the studied species in comparison with the conditions of the BBB. A relationship was found between the dynamics of phenological phases and the degree of winter hardiness: the stronger the annual growth was, the greater the percentage of freezing from the total length of the seedling was observed.
New data on invasive insects in the republic of Сrimea
Authors: Stryukova N. M. , Stryukov A. A.
Published: January 2021

In recent years, the emergence of new invaders has been discovered in Crimea – the mealy lantern fly Metcalfa pruinosa (Say, 1830) (Hemiptera: Auchenorrhyncha: Flatidae), the indian wax scale Ceroplastes ceriferus (Fabricius, 1798) (Hemiptera: Coccoidea: Coccoidea), the southern green stink bug Nezara viridula (Linnaeus, 1758) (Hemiptera: Heteroptera: Pentatomidae), the stink bug Oxycarenus lavaterae (Fabricius, 1787) (Hemiptera: Heteroptera: Lygaeidae) and palm moth Paysandisia archon (Burmeister, 1880) (Lepidoptera: Castniidae). Timely information on the penetration of new alien species that damage agricultural and ornamental crops into the entomofauna of Crimea, their distribution, biological characteristics that are relevant for specialists in the field of plant protection and landscape architecture. The number of mealy lantern fly has increased over the years of observations, and the list of host plants has also expanded, which has confirmed its polyphagia. In Crimea, a pest has appeared that can cause significant damage to fruit, berry, nut-bearing and ornamental crops. During the years of research, we discovered another alien species – the indian wax scale. As a result of damage to ornamental crops, individual branches dried out and some plants died. We assume that this phytophage was brought to the Crimea with planting material, because it occurs focally on objects of landscape architecture. Since 2018, palm trees have been damaged by the palm moth – one of the invasive pests of these plants on the southern coast of Crimea. Caterpillars damage the vascular system and the plant's growth point. As a result of the damage caused, the plants die. Since the same year, a new alien species, the southern green stink bug, has shown harmfulness on vegetable, berry and flower crops, as well as on weeds, and in 2020, for the first time in the Crimea, in the Nizhnegorsk region, another stink bug, O. lavaterae, was found on a linden. There is little information about this insect. It can form massive clusters on linden and hibiscus bark.