bluuebunny/crossref_metadata_2025 huggingface dataset:
Clinical presentation and CT features in pediatric patients with COVID‐19 infection
Authors: Solgun Huseyin Avni , Yurdaısık Isıl
Published: June 2021

Background

The aim of this study includes to discuss the clinical, laboratory, and chest computed tomography (CT) in pediatric patients with 2019 novel coronavirus (COVID-19) infection.
Material and Methods

The clinical, laboratory, and chest CT features of 17 pediatric inpatients with COVID-19 infection confirmed by pharyngeal swab COVID‐19 polymerase chain reaction(PCR). All clinical and laboratory data have been recorded and analyzed during march-february 2021. Chest CT have been performed to all Covid 19 PCR confirmed patients and radiologicall view have been noted.
Results

Seventeen pediatric patients with a history of close contact with COVID-19 diagnosed family members included to the study. Fever (10/17, 58%) and cough (13/17, 76%) were the most common symptoms. For laboratory findings, c reactive protein elevation (15/17, 88%) seem to be the most finding. A total of 4 patients presented with unilateral pulmonary lesions (4/17, 23%), 9 with bilateral pulmonary lesions (9/17, 52%) and 13 cases showed bilateral diffuse covid pattern on chest CT (13/17, 76%). Non-spesific consolidation with was observed in 8 patients (8/17, 47%), ground‐glass opacities were observed in 11 patients (11/17, 64%), nodules were observed in 7 patients (7/17, 41%), and tiny nodules were observed in 2 patients (2/17, 11%).
Conclusion

In pediatric patients with positive COVID-19 nucleic acid test from pharyngeal swab samples; the early detection of lesions by CT can be efficient; in management and early treatment for pediatric patients. However; early chest CT screening and COVİD-19 PCR testing together can be more efficent in diagnose.
SMC4, CCNB1 and CKS1B as potential targets and new critical biomarkers for the prognosis of human bladder cancer
Authors: Fang Hongpeng , Huang Zhansen , Zeng Xianzi , Wan Jiaming , Wu Jieying , Di Jinming
Published: June 2021

Background
As a common malignant cancer of the urinary system, the precise molecular mechanisms of bladder cancer remain to be illuminated. The purpose of this study was to identify core genes with prognostic value as potential oncogenes for the diagnosis, prognosis or novel therapeutic targets of bladder cancer.
Methods
The gene expression profiles GSE3167 and GSE7476 were available from the Gene Expression Omnibus (GEO) database. Next, PPI network was built to filter the hub gene through the STRING database and Cytoscape software and GEPIA and Kaplan-Meier plotter were implemented. Frequency and type of hub genes and sub groups analysis were performed in cBioportal and ULCAN database. Finally,We used RT-qPCR to confirm our results.
Results
Totally, 251 DEGs were excavated from two datasets in our study. We only founded high expression of SMC4, TYMS, CCNB1, CKS1B, NUSAP1 and KPNA2 was associated with worse outcomes in bladder cancer patients and no matter from the type of mutation or at the transcriptional level of hub genes, the tumor showed a high form of expression. However, only the expression of SMC4,CCNB1and CKS1B remained changed between the cancer and the normal samples in our results of RT-qPCR.
Conclusion
In conclusion,These findings indicate that the SMC4,CCNB1 and CKS1B may serve as critical biomarkers in the development and poor prognosis.
Maximum Lesion-to-contralateral Normal Brain Tissue Ration of 11C-methionine PET as a Prognostic Imaging Biomarker for Newly Diagnosed and Untreated Astrocytic Glioma
Authors: Nakajo Kosuke , Uda Takehiro , Kawashima Toshiyuki , Terakawa Yuzo , Ishibashi Kenichi , Tsuyuguchi Naohiro , Tanoue Yuta , Nagahama Atsufumi , Koh Saya , Uda Hiroshi , Sasaki Tsuyoshi , Ohata Kenji , Kanemura Yonehiro , Goto Takeo
Published: June 2021

Purpose: This study aimed whether the uptake of amino tracer positron emission tomography (PET) can be used as an additional imaging biomarker to estimate the prognosis of glioma.Methods: Participants comprised 56 adult patients with newly diagnosed and untreated World Health Organization (WHO) gradeⅡ-Ⅳ astrocytic glioma who underwent surgical excision and were evaluated by 11C-methionine PET prior to the surgical excision at Osaka City University Hospital from July 2011 to March 2018. Clinical and imaging studies were retrospectively reviewed based on medical records at our institution.Results: Preoperative Karnofsky Performance Status (KPS) only influenced progression-free survival (PFS) (hazard ratio [HR] 0.20; 95% confidence interval [CI] 0.10-0.41, p<0.0001), whereas histology (anaplastic astrocytoma: HR 5.30, 95%CI 1.23-22.8, p=0.025; glioblastoma: HR 11.52, 95%CI 2.27-58.47, p=0.0032), preoperative KPS≥80 (HR 0.23, 95%CI 0.09-0.62, p=0.004), maximum lesion-to-contralateral normal brain tissue (LN max)≥4.03 (HR 0.24, 95%CI 0.08-0.71, p=0.01), and isocitrate dehydrogenase (IDH) status (HR 14.06, 95%CI 1.81-109.2, p=0.011) were factors influencing overall survival (OS) in multivariate Cox regression. OS was shorter in patients with LN max≥ 4.03 (29.3 months) than in patients with LN max<4.03 (not reached; p=0.03). OS differed significantly between patients with IDH mutant/LN max<4.03 and patients with IDH mutant/LN max ≥4.03.Conclusions: LN max using 11C-methionine PET may be used in prognostic markers for newly identified and untreated WHO gradeⅡ-Ⅳ astrocytic glioma.
Prevalence of Dengue Virus, Chikungunya and Zika Infection in Blood Donors of Northern of Brazil
Authors: Lamarão Leticia Martins , Correa Angelita Silva Miranda , de Castro Renata Bezerra Hermes , Amaral Carlos Eduardo de Melo , Monteiro Patricia Danin Jordão , Palmeira Mauricio Koury , Lopes Luane Nascimento , Oliveira Angela Neves , de Lima Maria Salete Maciel , Burbano Rommel Rodríguez
Published: June 2021

We identified the prevalence of infection by the Dengue virus, Chikungunya and Zika in blood donors in epidemic and non-epidemic periods in the State of Pará, in Northern Brazil, we classify the donors (symptomatic or asymptomatic) and the possibility of this screening being carried out in a sample pool.
Synthesis and Characterization of Highly Efficient Oil-Water Separation, Recyclable, Magnetic Particles CoFe2O4/SDB
Authors: Liu Cailin , Yu Li , Fan Yue , Li Chang , Ren Xianyan , Yang Haijun , Lin Shudong
Published: June 2021

In the oil-water separation, the difficulty to recover and low hydrophobicity are key limitation factors for practical applications. In this paper, we design Cobalt ferrite hybird Polystyrene divinylbenzene microspheres (CoFe2O4/SDB), which were conducted through in-situ suspension copolymerization. The CoFe2O4 is prepared by low heat solid phase sol-gel method. It had been found that the CoFe2O4/SDB have a spherical structure, good adsorption behavior, highly hydrophobicity and even superhydrophobicity. The adsorption capacity of CoFe2O4/SDB composites could absorb kerosene up to 6 times of its own weight. Interestingly, kerosene can be easily separated from the surface of CoFe2O4/SDB particles with ultrasonic operation. CoFe2O4/SDB particles can still maintain good hydrophobicity and adsorption capacity of kerosene after 11 cycles after drying. With in situ polymerization of St、DVB and CoFe2O4, CoFe2O4/SDB as a promising absorbent of kerosene which has great potential in application of oil-water separation.
Challenge Non-Communicable Diseases Programs in Iran: A Qualitative Study
Authors: Ataollahi Fatemeh , Vali Leila , Amiresmaili Mohammadreza , Nakhaee Nouzar , Okhovati Maryam
Published: June 2021

Background

One of the effective strategies to prevent and control Non- communicable diseases risk factors is to identify priorities and problems of Non-communicable programs. this study was conducted to identify the challenges of non-communicable diseases programs in order to improve programs development.
Methods

This study was a qualitative study which was carried out in 5 universities of medical sciences and the Ministry of Health in 2019 year. The sampling method was purposive and the participants include specialists in the field of NCD who have executive and research experience in this field. Data were collected through 40 individual interviews with health professionals and care providers. Data were analyzed by content analysis using CIPP model.
Results

In the present study, problems of non-communicable disease programs were identified in 4 main categories, 12 sub-categories including inadequate participation of all levels of service delivery in program development, needs assessment, budget allocation, data and program evaluation system.
Conclusions

Some problems of non-communicable diseases programs included inadequacy of needs assessment, lack of prioritization based on local and regional conditions, program evaluation system. Paying attention to the mentioned points will help to solve underlying problems and improve the processes of developing, implementing and evaluating programs.
Mini-temporal approach as an alternative to the classical pterional approach for resective temporal region surgeries: Technical note
Authors: Kudulaiti Nijiati , Liu Feili , Hameed N. U. Farrukh , Wang Peng , Zhang Jie , Feng Rui , Wu Jinsong
Published: June 2021

Background

Classical pterional appoach for temporal surgeries may cause atrophy and dysfunction of temporalis, injury to the facial nerve, as well as unnecessary cortical exposure. As an alternative to the classical pterional approach for such surgeries, we hereby describe an mini-temporal approach which reduces these risks and proven to be practical in neurological surgeries.
Methods

In the mini-temporal incision design, the frontal end of the incision never surpassed the hairline at the level of temporal line, and a one-layer skin-galea-muscle flap was detached from the cranium, effectively avoiding the injuries of facial nerve. The surgical bone window was completely located underneath the temporalis muscle, allowing it to be completely repositioned postoperatively.
Results

We demonstrated the application of mini-temporal approach in a variety of temporal region tumors, which can be applied to complete successful resective surgeries while effectively reducing injuries to extra-temporal cortex, temporalis and facial nerve. There were no postoperative complications related to extra-temporal cortical damage, atrophy of temporalis or injury to the facial nerve.
Conclusion

The mini-temporal approach can effectively shorten the time of craniotomy and closure, decrease the size of bony removal, increase the restoration of temporalis during closure and lower the chance of facial nerve injury. Therefore, it improves cosmetic outcomes and reduces the risk of unintentional extra-temporal cortical injury, which fully embodies the minimally invasive principle in neurosurgery.
Tuning Thermoelectric Properties of Bi2Ca2Co2Oy through K doping and Laser Floating Zone processing
Authors: Özçelik Can , Depci Tolga , Gürsul Mehmet , Çetin Gizem , Özçelik Bekir , Torres Miguel A. , Madre Maria A. , Sotelo Andres
Published: June 2021

In the present study, thermoelectric Bi2Ca2 − xKxCo2Oy ceramic materials (x = 0.0, 0.05, 0.075, 0.10, and 0.125) in different forms (called bulk, as-grown and annealed fibers) have been manufactured via a classical solid-state method and textured using the laser floating zone (LFZ) technique. The identification and characteristics of undoped and doped samples were determined by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD patterns of all samples have shown great similarity, and the major peaks can be assigned to the Bi2Sr2Co2Oy thermoelectric phase, independently of the processing technique and K-doping. SEM-EDS have indicated the randomly oriented plate like grains of different sizes in bulk sample, evolving to longer and well-oriented grain structure through K-doping and LFZ. Because of the incongruent melting properties of compound, the high number of secondary phases formed in the as-grown samples. In order to reduce it, an annealing and K-doping process have been applied. The microstructural evolution is reflected on the electrical properties, and the lowest resistivity values are found in the annealed K-doped fibers. Seebeck coefficient is positive in all cases, pointing out to p-type conduction mechanism. These modifications led to PF values up to 0.162 mW/K2m, obtained in 0.10 K-doped annealed fibers at 650 oC.
Size and shape controlled synthesis of CdS and ZnS nanoparticles and their applications in photodegradation of organic dyes
Authors: Kaboudin Babak , Kyomarzi Meysam , Kazemi Foad
Published: June 2021

Different size and shapes of CdS and ZnS nanoparticles have been synthesized, characterized and studied for photodegradation of organic dyes. In this study, effect of alkyl chain of dithiocarbamates was investigated for the size and shaped controlled CdS and ZnS nanoparticles. A thorough structural characterization of nanoparticles has been carried out by means of transmission electron microscopy (TEM), scanning electron microscopy (SEM) images, EDS, XRD, and UV/vis spectroscopy. Results showed that the alkyl chain in dithiocarbamate complexes of zinc and cadmium systems plays a significant role in the final morphology of the CdS and ZnS nanoparticles. A photocatalytic degradation of UV-irradiated Methylene Blue solutions in the presence of ZnS and CdS nanoparticles was studied in order to examine the nanoparticles influence on photodegradation rates.
Modeling 65 Years of Land Subsidence in California’s San Joaquin Valley
Authors: Lees Matthew , Knight Rosemary , Smith Ryan
Published: June 2021

[copied directly from first paragraph of paper]

Land subsidence, caused by groundwater extraction and subsequent subsurface compaction, is an issue of global concern. Since the 1920s, there have been numerous periods of subsidence in California’s San Joaquin Valley leading to widespread sinking of the land surface which has locally exceeded 9 m. The most recent period of severe subsidence, which was triggered by the 2012-15 drought, is now causing damage which threatens the long-term viability of critical water distribution infrastructure in the Valley. However, there is neither a continuous monitoring record of the subsidence nor high-quality records of the hydrologic head changes in the subsurface which have caused the subsidence, making it impossible to understand, and thus mitigate, the subsidence. Here, we leverage subsidence and hydraulic head data from a variety of sources to create and validate a one-dimensional model of subsurface compaction and subsidence over the 65 years between 1952-2017. This model, which simulated up to 7.5 m of subsidence since 1952, provides a complete record of subsidence in our study region by filling crucial gaps in the observed record. Our model reveals the long-term processes causing subsidence, which operated over decades-to-centuries and caused exceptionally high rates of baseline subsidence in 2017, resulting in a critical risk of future subsidence. This risk is exacerbated as the Valley moves into drought conditions again in Spring 2021. We demonstrated an approach which provided the understanding of subsidence in the Valley needed to directly inform sustainable groundwater management, and which is applicable in subsiding regions around the World.
The Research Behaviour and Dynamics of Science in Periods of Crisis: Case Study of COVID-19 Leading to Discovery of mRNA Vaccines
Authors: Coccia Mario
Published: June 2021

No studies to date allow us to explain the dynamics of science and research behavior in the presence of crisis to support research policy for allocating resources with effectiveness and planning scientific research to provide solutions directed to positive societal impact. The main goal of this study is to explain the research behavior and dynamics of science during a global crisis, focusing on Coronavirus Disease 2019 (COVID-19) that has generated a pandemic crisis worldwide. Results suggest critical characteristics of the research behavior and dynamics of science in global crisis, namely: evolution of research field is driven by new and consequential environmental threats in human society to be solved in a short run; evolution of crisis-driven research fields field is pulled by few (parent) disciplines (3–5) that generate more than 80% of documents; the most active institutions in crisis-driven studies are mainly academic institutions localized in advanced countries; main funding institutions in scientific production of crisis-driven research fields are public organizations of rich nations and global charitable foundations; the most productive countries of crisis-driven research fields are nations direct to support their global leadership; moreover, research behavior of crisis-driven research fields is mainly based on scientific publications having open access for a widespread diffusion of results for a higher social impact; finally, scientific production of crisis-driven research field has a higher density of short communications with letters and notes to systematize quickly findings, publish and spread them. Overall, then, this study provides critical characteristics of research behavior and dynamics of science in global crises that could be of benefit to policymakers to design science policies and plan research programmes to generate fruitful science advances and technological breakthroughs directed to reduce negative effects of crisis on socioeconomic systems and improve wellbeing of people.
Drug resistant miliary tuberculosis after in vitro fertilization
Authors: Sotskiy P. O. , Gevorkyan L. G. , Sotskaya O. L. , Safaryan M. D.
Published: June 2021

The article describes a clinical case of drug resistant miliary tuberculosis in an immunocompetent woman with a multifetal pregnancy after in vitro fertilization (IVF). Difficulties in diagnosing miliary tuberculosis were due to the late detection of the initial focus of infection, that was endometrial tuberculosis, which generalized after IVF. The rare association of isthmic nodose salpingitis and a borderline ovarian tumor (serous ovarian cystadenoma) was a factor complicating the detection of tuberculosis.Conclusion: In an IVF program with bilateral fallopian tube occlusion, tuberculosis should be considered as a possible cause of this pathology. Endometrial tuberculosis is associated with a risk of repeated implantation failure and generalization of the disease.
Resolving the nonequilibrium Kondo singlet in energy- and position-space using quantum measurements
Authors: Erpenbeck André , Cohen Guy
Published: June 2021

The Kondo effect, a hallmark of strong correlation physics, is characterized by the formation of an extended cloud of singlet states around magnetic impurities at low temperatures.
While many implications of the Kondo cloud's existence have been verified, the existence of the singlet cloud itself has not been directly demonstrated.
We suggest a route for such a demonstration by considering an observable that has no classical analog, but is still experimentally measurable: ``singlet weights'', or projections onto particular entangled two-particle states.
Using approximate theoretical arguments, we show that it is possible to construct highly specific energy- and position-resolved probes of Kondo correlations.
Furthermore, we consider a quantum transport setup that can be driven away from equilibrium by a bias voltage.
There, we show that singlet weights are enhanced by voltage even as the Kondo effect is weakened by it.
This exposes a patently nonequilibrium mechanism for the generation of Kondo-like entanglement that is inherently different from its equilibrium counterpart.
EDUCAÇÃO SUPERIOR PÚBLICA A DISTÂNCIA NA BAHIA: AVANÇOS E CONTRADIÇÕES
Authors: Santos Nonato Emanuel do Rosário , Souza Sales Mary Valda
Published: June 2021

O estudo em tela tem por objetivo analisar o histórico de oferta pública de ensino superior a distância na Bahia para identificar seus avanços e contradições a partir do problema de pesquisa: como a oferta pública de ensino superior a distância na Bahia se conforma ante os avanços e contradições desse processo? A metodologia utilizada é a pesquisa documental. Em vista da proeminência da UNEB no quadro de oferta de vagas públicas na modalidade de Educação a Distância na Bahia, o estudo centraliza sua abordagem na experiência da UNEB. Abordando as bases legais para o desenvolvimento da EAD no Ensino Superior, a implementação do Sistema Universidade Aberta do Brasil no estado da Bahia, as experiências pré-UAB e a inserção de EAD nos cursos presenciais de graduação, este estudo identifica os avanços e as contradições do processo de assimilação da Educação a Distância pelas universidades públicas baianas, a configuração do quadro de vagas de Educação Superior Pública na Bahia resultante das políticas de oferta de cursos a distância e os impactos dessa oferta na estrutura organizacional da universidade.
EDUCAÇÃO A DISTÂNCIA E O 1º DA FAMÍLIA
Authors: Almeida Santana Ana Cristina , Martins Giraffa Lucia Maria
Published: June 2021

Este artigo apresenta o detalhamento da organização de uma investigação relacionada à Universidade Aberta do Brasil (UAB) em estudo de caso no estado de Sergipe, e a sua constituição como sujeito de direito, a partir da investigação de uma relação dialética baseada na racionalidade comunicativa de Jürgen Habermas. Ao buscarmos nos trabalhos correlatos a questão do 1º na família (first in the Family) identificamos a mudança na concepção pessoal, familiar e sociocomunitária daqueles que são os primeiros na sua família a ter acesso à formação superior. Aliado a isto consideramos a oportunidade de cursar uma graduação na modalidade a distância (EaD), como cenário emancipatório e de oportunidade para construção da cidadania e o acesso à educação superior. Os processos executados nesta fase piloto demonstram a oportunidade desta pesquisa, a sinalização da importância em ampliar as ofertas inclusivas associadas à educação superior, por meio da oferta de EaD.
Análise de potencialidades de uso de tecnologias da informação e da comunicação em curso de licenciatura em música em IES privadas
Authors: Hilu Luciane
Published: June 2021

Este artigo busca discutir alternativas pedagógicas e tecnológicas que possam diminuir as disparidades de conhecimentos dos ingressantes dos cursos superiores, advindas do ingresso de grandes turmas por questões de sustentabilidade financeira das Instituições de Ensino Superior (IES), de forma sustentável economicamente e com qualidade, dentro de um paradigma atual voltado à complexidade. Este questionamento advém da situação atual das IES, que passam por questionamentos epistemológicos, metodológicos, tecnológicos, mas também de vertente da sustentabilidade. Inicia com a discussão sobre a educação na contemporaneidade, tratando dos paradigmas educacionais atuais e de sua íntima ligação com as tecnologias; passa pela análise dos aspectos de sustentabilidade; relata o estudo de caso do curso de Licenciatura em Música de uma IES de grande porte do Paraná, a Pontifícia Universidade Católica do Paraná (PUCPR), analisando o perfil do ingressante; e, por fim, propõe a utilização das Tecnologias de Informação e Comunicação (TICs) neste âmbito, conceituandoas como alternativa para solução das problemáticas apontadas. Conclui-se que o uso das TICs no ensino superior faz-se cada vez mais imprescindível, tanto como um meio de se efetivar a aquisição do conhecimento dentro da universidade, quanto um elemento que deve fazer parte do aprendizado de um futuro profissional quando do exercício de sua profissão.
COINVESTIGAR A DISTÂNCIA EM TEMPOS DE CIBERCULTURA: RELATO DE UMA EXPERIÊNCIA SOBRE COEMPREENDER
Authors: Silva Bento Duarte , Pinheiro Souza Karine
Published: June 2021

No quadro de um projeto de investigação-ação sobre TIC e Empreendedorismo, este artigo apresenta o recorte da validação de conceitos sobre empreender em rede (coempreender). Este processo foi realizado na fase de reflexão, a qual, pelo fato dos diversos atores implicados se encontrarem em lugares diversos (Inglaterra, Portugal e Brasil), apenas podia ser conseguido recorrendo às tecnologias da comunicação ubíqua. Assim, neste artigo, efetuamos o relato dessa experiência de forma a averiguar até que ponto as tecnologias da comunicação ubíqua permitem e favorecem o processo de coinvestigação a distância. Com fundamento na teorização na Educação a Distância em tempos da Cibercultura e da construção do conhecimento nas redes educativas online, a metodologia de pesquisa aproximou-se da estratégia de um grupo focal online e da coinvestigação (OKADA, 2014). Os participantes constituíram uma comunidade de investigação, usando as tecnologias de comunicação assíncrona (fórum, 13 participantes) e síncrona (webconferência, 10 participantes) para consolidar as categorias do coempreender. No tratamento de dados recorremos à sociometria e à análise de conteúdo. Os resultados mostram que tecnologias da comunicação ubíqua revelaram-se à altura do objetivo pretendido, pois, apesar da distância e dos participantes se encontrarem em lugares diferentes, foi possível construir conhecimento sobre o tema.
Метод моделирования диэлектрической проницаемости анизотропного иерархически построенного нанокомпозита с периодической структурой
Authors: Корчагин С.А. , Терин Д.В.
Published: June 2021

A method is proposed for modeling the complex dielectric constant of an anisotropic hierarchically constructed nanocomposite with a periodic structure, based on the complex application of quantum mechanical calculations, an effective medium model, and equivalent equivalent circuits. The dielectric constant of the TiO2 - Al2O3 nanocomposite under the action of external high-frequency electromagnetic radiation has been investigated. The wavelength ranges at which resonance bursts are observed are determined. The possibility of controlling the maxima of difference losses and resonance absorption maxima by changing the geometric parameters of the nanocomposite is shown.
Магнитные характеристики наночастиц магнетита, внедренных из феррожидкости в пористый кремний
Authors: Плешаков И.В. , Волков М.П. , Бибик Е.Е. , Глебова Н.В. , Нечитайлов А.А. , Кузьмин Ю.И.
Published: June 2021

Magnetic properties of the nanostructure obtained by the introduction of magnetite particles into the channels of porous silicon from a colloidal solution of Fe3O4 in kerosene are studied. The temperature dependences of the parameters of these samples are investigated, and their features are established. It is assumed that the magnetic material consists of two fractions, one of which exhibits superparamagnetic behavior, and the second is in a blocked state up to room temperature.
КОСМИЧЕСКАЯ СВЯЗЬ УПЛОТНЯЕТСЯ
Authors: Павлова Л.
Published: June 2021

Какова роль спутников в экосистемах 5G и IoT? Спутники на геостационарной и негеостационарных орбитах – конкуренты или взаимодополняющие системы? Что предлагают производители оборудования спутниковой связи, какова позиция операторов? Эти и другие вопросы обсуждались на XIII Международной конференции Satellite Russia & CIS 2021, которая была проведена 8–9 апреля 2021 года.
"КОМПЛЕКСНАЯ БЕЗОПАСНОСТЬ – 2021": ОТ ГОРОДА БЕЗОПАСНОГО К ГОРОДУ УМНОМУ
Authors: Попов С. , Набоких Л.
Published: June 2021

12 по 16 мая 2021 года основная площадка XIII Международного салона "Комплексная безопасность – 2021" впервые развернулась в армейском конгрессно-выставочном центре "Патриот" (Кубинка, Московская область). Одной из главных тем салона в этом году стал безопасный город.
МОДЕЛИ ДИАГРАММООБРАЗОВАНИЯ В СВЕРХПЛОТНЫХ СЕТЯХ РАДИОДОСТУПА 5G. ЧАСТЬ 2. ОЦЕНКА РАЗНОСА УСТРОЙСТВ
Authors: Фокин Г.
Published: June 2021

Во второй части исследования, посвященного моделям и методам диаграммообразования в сверхплотных сетях радиодоступа 5G, приводится оценка в первом приближении необходимого территориального разноса соседних приемопередающих устройств для поддержания допустимого уровня внутрисистемных помех. Результаты математического и имитационного моделирования показывают, что требуемый территориальный разнос должен составлять примерно 20% дальности радиопокрытия сетевых устройств, работающих в режиме диаграммообразования с разбросом углов 2°.
Анализ оксидных порошковых материалов, подготовленных методом сплавления с флюсом, на волнодисперсионном рентгенофлуоресцентном спектрометре
Authors: Герасименко Н.Н.
Published: June 2021

Сплавление порошковых материалов с флюсом является эффективным методом подготовки проб для рентгенофлуоресцентного анализа (РФА). При сплавлении устраняется неоднородность материала пробы, вызванная разным размером зерен, а также минералогическими различиями. При переходе образца в стеклообразное состояние происходит гомогенизация свой­ств, что позволяет расширить диапазоны калибровки за счет применения различных стандартных образцов, включая синтетические.
В статье с помощью подготовки проб методом сплавления демонстрируется построение единой градуировочной характеристики (калибровка) для таких материалов, как минералы, руды, огнеупоры и т. д.
Проект химического факультета МГУ им. М. В. Ломоносова и Политехнического музея. Из истории приборостроения в газовой хроматографии 1940 х – начала 1970 х годов. Часть 2
Authors: Матиевская Е.И. , Баум Е.А.
Published: June 2021

В ходе формирования хроматографической коллекции Политехнического музея большое внимание уделяется раскрытию исторической ценности представленных в ней экспонатов, мемориализации сведений о разработчиках научного инструментария. Первая часть статьи рассказывала о становлении и развитии приборостроения в области газовой хроматографии за рубежом в 1940-е – 1960-е годы. Вторая часть посвящена пионерской деятельности в этом направлении отдельных представителей советского научного сообщества в период 1950–1970-х годов. Представлена информация по разработке и производству некоторых моделей советских лабораторных и промышленных газовых хроматографов. Проанализированы история создания, предназначение и устройство лабораторного газового хроматографа ЛХМ 8МД, экземпляр которого хранится в фондах Политехнического музея.
El contexto de la decisión judicial y su especial importancia a la hora de fallar por equidad
Authors: Rivadavia Valentina
Published: June 2021

El objeto de estas líneas consiste en plasmar algunas consideraciones acerca de las condiciones de contexto éticas y normativas que deberían darse para que los tribunales pudieran fallar haciendo uso de principios, puntualmente, el de equidad, para resolver las cuestiones sometidas a su consideración. Se analizará cómo la equidad presenta particularidades que dotan de especial relevancia a las condiciones normativas y éticas de la función jurisdiccional a efectos de asegurar que la decisión judicial cuente con un mínimo de racionalidad instrumental. Se utilizará como principal guía el análisis elaborado por Jesús Vega que estudia críticamente las visiones de equidad delineadas por Ferrajoli y Aristóteles.
Editorial
Authors: Berté Rodrigo , Silva Rodrigo de Cassio da
Published: June 2021

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Teaching job performance and its impact on the Synthetic Index of Educational Quality (ISCE) in the Municipality of Cucuta during the 2016-2019 period.
Authors: Pérez-Soto Nancy , Hernández-Melo Carolina , Marulanda-Ascanio Carolina
Published: June 2021

The objective of this work is to determine the teaching work performance and its incidence in improving the synthetic index of educational quality in the municipality of Cucuta during the period 2016-2019.

The current Teaching Professionalization Statute has been characterized as one of the most important elements in education in recent years, being the evaluation and teaching quality, transversal aspects to specifically define the improvement of the ISCE as a public policy in the city of Cucuta. Through an analytical study of Decree 1278, it is possible to glimpse that it contains specific elements that allow to delimit with great success an educational quality standard in relation to the professionalization of the teacher, being the evaluation module the appropriate mechanism to achieve a clearer view of the state of the quality of the Educational Institution where the teacher works. Likewise, it is considered that the teacher is suitable as long as he or she passes the performance evaluation sufficiently, however, it should be appreciated that it is important that this evaluation allows evidence of a proper quality standard that is reflected in the ISCE of the Institution.

Based on the information collection instruments used, very appropriate elements for the investigation can be extracted; from these it was possible to recognize several aspects. The surveys carried out make it possible to establish that ultimately job performance directly affects the improvement of the Synthetic Index of Educational Quality, Also, in accordance with the information mechanisms obtained, specifically speaking of the databases provided by the ETC (Entity Certified in Education) it is possible to identify that the educational institutions of Cucuta have obtained a significant development compared to previous years. Regarding the performance of the evaluation system, it was evidenced that the process is indeed adequate to measure the behavioral and functional elements; however, it is appreciated that special attention is required to the agreements and commitments at the beginning of the school year in order to define the goals and purposes of the Educational Institution. In addition to the above, it is possible to glimpse with a wide margin of success that the classroom teachers evaluated during the period between 2016 and 2019 have managed to gradually improve, which implies that the measurement instruments can produce good results in direct correspondence with development institutional established by the ISCE in each of the official and private educational establishments in Cucuta.
The human rights-based approach in public policies: from institutionality to citizenship
Authors: Rodríguez-Gómez Jefferson Alexander
Published: June 2021

This article is a product of the research project "Public policies, citizenship and the human rights approach in the Norte de Santander Department" carried out as a public management project - social extension of the Comfanorte Higher Studies Foundation - FESC in the Public Management Specialization Program. The aim was to describe conceptual and methodological elements that would allow the proposal of foundations for the formulation of public policies with a long-term vision and a human rights-based approach for the Norte de Santander Department, with a scope that includes the identification of the problem, the definition of the population, the diagnosis and the action plan. To this end, from the qualitative approach, theoretical foundations were adopted to support the proposal under the protection of interdisciplinary information sources through interviews with public policy experts in the region. Finally, the importance of differential approaches in the formulation of public policy was recognized, since their specificity guarantees in a differential manner the satisfaction of the rights of the different population groups, as well as the transverse and incidental participation of the citizenry as necessary in all phases of the formulation, which is fundamental to the success of public policy.
Estudio de las dinámicas urbanas del sector de cabecera del llano como herramienta pedagógica para la arquitectura
Authors: Estévez-Suarez Fernando Andrés , Coronel Ruiz Luz Karime , Lizcano-Prada Fabio Andrés
Published: June 2021

El presente artículo de investigación resalta la importancia de los análisis territoriales dentro de la gestión urbana; y, como herramienta pedagógica para el área de la arquitectura. En el se abordan las transformaciones y tendencias de uso del suelo que se han desarrollado en el sector de Cabecera del Llano, Santander – Colombia entre los años 2008-2019 desde un enfoque histórico, territorial y pedagógico, con relación a los componentes físico-construido, urbano-ambiental, social-cultural y económico- normativo; con el fin de proponer aspectos significativos o de interés para la solución de problemáticas presentes en el territorio, y plantear orientaciones como respuesta a las tendencias o transformaciones del uso del suelo. El marco metodológico de esta investigación se enmarca en el paradigma mixto, es de tipo descriptivo, y esta basado en el desarrollo de un estudio de campo que responde a lo transversal, observacional y retrospectivo, que soporta y complementa el componente teórico planteado dentro de la misma. Las herramientas de investigación utilizadas dentro de esta metodología corresponden a la observación participante, los diarios de campo, el análisis urbano y una matriz de resultados. Como hallazgo relevante se destaca que en razón de los cambios significativos en el ordenamiento territorial y en las tendencias de uso del suelo evidenciadas en Cabecera del Llano para el periodo de estudio, es necesario fortalecer el control urbano en referencia a los usos comercial y dotacional, con el fin de que estos den cumplimiento a lo establecido en la guía territorial, así como generar estudios proyectivos constantes con relación a los cambios del uso del suelo, teniendo en cuenta que las dinámicas allí presentes son altamente variables.
Una escuela para los niños migrantes climáticos: desafíos para la educación en tiempos de cambio climático
Authors: Núñez-Rodríguez José De Jesús
Published: June 2021

El cambio climático es una realidad presente y convoca con urgencia a repensar la educación de los niños y jóvenes dentro de escenarios cargados de altas dosis de incertidumbre y vulnerabilidad ambiental, social y económica. La escuela, en su sentido amplio, está llamada a vehicular las transformaciones curriculares y organizativas enfocadas a integrar a las poblaciones sujetas a las presiones climáticas, y territorialmente forzadas a movilizarse en la búsqueda de oportunidades para su subsistencia, a objeto de garantizar una educación pertinente para los migrantes climáticos. Este segmento importante de la sociedad es invisible en las políticas y programas educativos actuales en la mayoría de los países vulnerables a los factores medioambientales. El propósito de este artículo es reflexionar sobre la necesidad de repensar la educación para atender a los miles de niños y jóvenes migrantes por los efectos del cambio climático. El Observatorio de los Desplazamientos Internos (IDMC) estimó que en el año 2017 alrededor de 30,6 millones de nuevos desplazamientos fueron impulsados por desastres naturales en unos 200 países, procedentes de Asia, el Pacifico y las Américas. Desde regiones con alta vulnerabilidad ambiental y social las familias inician un recorrido dentro de sus países, y fuera de ellos, en búsqueda de mejores climas, suelos, alimentos, agua y condiciones sanitarias.  En este ensayo se analiza las implicaciones del clima futuro en el funcionamiento de la escuela y comunidades vulnerables; se caracteriza el fenómeno de la migración de niños y jóvenes en edad escolar y sus repercusiones en la prosecución y exclusión escolar y, como corolario; se proponen algunas estrategias para adaptar la escuela a un escenario de migraciones climáticas futuras.
Las Tecnologías Digitales: El Futuro del Comercio Internacional
Authors: Avendaño Castro William Rodrigo , Manosalva Barragán Jakeline
Published: June 2021

La presente investigación tiene como prioridad demostrar la importancia de las tecnologías digitales en el futuro del Comercio Internacional y como influencian positiva o negativamente en la economía de las naciones. De la misma manera, se analiza las implicaciones del mundo electrónico en la oferta y demanda de bienes, servicios y productos, debido a que su consolidación  a nivel mundial como tendencia de comercializar a través de lo digital. Para la realización de la investigación se ha tenido en cuenta artículos científicos con relación al Comercio Internacional y a las innovaciones en tecnologías digitales; a partir de la información recolectada en el presente estudio, se ha determinado que las empresas requieren actualizarse a las nuevas tecnologías digitales, con la finalidad de responder satisfactoriamente a las necesidades de las personas.
Guest editorial -- Policies and practices in action to address soil erosion
Authors: Lefevre Clara , Balks Megan , Nziguheba Generose , Poch Rosa
Published: June 2021

This special issue is the second published after the Global Symposium on
Soil Erosion (GSER, 15-17 May 2019, Rome, Italy) and includes
contributions dealing with the 2nd theme of the GSER: Policies and
practices in action to address soil erosion. While there is a good
scientific understanding of the physical measures that can be used to
prevent or mitigate soil erosion, the main constraints to progress often
relate to policy development and or implementation as well as
socio-economic aspects that provide limitations to implementation of
sustainable soil management (SSM) practices including those directed to
control erosion. There are no right or wrong answers to which policy or
approach is most effective. Some combination of approaches needs to be
adopted that work in the particular political, cultural, and
socio-economic environment under consideration. The papers included in
this special issue provide examples, from the national to local level,
that could be adapted, or used, to improve uptake and implementation of
SSM practices to prevent or reduce soil erosion. Regardless of what
policy or plan is developed there has to be effective interaction with
the local farmers and land managers as they are key to implementing any
actions that will make a practical difference on the ground. Effective
policies cannot be developed or implemented without bringing the land
managers “on board” and the needs and limitations of the local farmers
must be thoroughly understood and considered in any policy or plan
development.
Klinškalnu priedes (Pinus contorta Dougl. var. latifolia Engelm.) introdukcijas perspektīvas Latvijā = Perspectives of Lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) introduction in Latvia
Authors:   ,   Latvia University of Life Sciences and Technologies, Sisenis Linards
Published: June 2021

As the demand for wood as a renewable resource is increasing, it is necessary to evaluate all possibilities to boost productivity of forest stands, including the use of introduced tree species. The aim of the thesis: to evaluate Lodgepole pine provenances characteristics (productivity, resistance, suitability for timber or biomass production) in comparison to Scots pine provenances parameters and recommend suitable P. contorta provenances for usage in Latvia. The doctoral thesis has been developed from year 2009 to 2012. The thesis researches tree species of North America – Lodgepole pines – productivity, growth rate, and also resistance to biotic and abiotic environmental factors in the climatic conditions of Latvia. Biomass volume, moisture of biomass components and also wood mechanical properties of Lodgepole pine are analysed separately. The data for the doctoral thesis were collected from the 18 Lodgepole pine provenance trials in Kuldīga, Ugāle, Tukums, Zvirgzde and Kalsnava that were established by Dr. silv. Imants Baumanis. Data for the comparison with Scots pine were collected by measuring trees from the Scots pine control lots that are included in the experiments, or from the identical age Scots pine stands right next to the experiment.During the research it was established that Lodgepole pine productivity is 25% higher than for Scots pine grown in identical conditions, also survival of this pine species is 10% - 20% higher. The average tree height and diameter of Lodgepole pine in comparison to Scots pine is statistically significantly (p=0.05) higher, furthermore, both species are responding similar to factors that influence growth rate. However, it is determined that Lodgepole pine has statistically significantly (p=0.05) higher proportion of trees with spike knots and double leaders, its wind hardiness is lower and this pine species is damaged more often by artiodactylia. The Lodgepole pine biomass volume of dry wood in average is 1.7 times higher than for Scots pine. Also tree mechanical properties – breaking strength and modulus of elasticity for this pine is statistically significantly (p=0.05) higher. For the conditions of Latvia the most productive are provenances from 50º, 53º, 55º-56º north latitude in Canada, 50º and 54º north latitude of Sweden’s Lodgepole pine stand progenies and the Lodgepole pine progeny stands of Latvia in Skrīveri and Bukulti with unknown origin. The doctoral thesis consists of 122 pages; information is summarized in 36 tables and 55 pictures, bibliography sources 153. In the final part of the theses 7 conclusions are formulated.
Ismertetés: Élelmiszer, egészség és komplexitás: egy olyan koncepcionális megértés felé, amely az együttműködésen alapuló népegészségügyi cselekvést irányítja
Authors: Erdei Gergő
Published: June 2021

A cikk célja egy modell kidolgozása, amely bemutatja a lehetséges kölcsönhatásokat az élelmiszerfertőzés, élelmiszerbiztonság, étrendi kontamináció, elhízás és élelmiszerallergia között.
Ismertetés: Mennyire hatékonyak a családalapú és az intézményitáplálkozási beavatkozások a gyermekek étrendjének és egészségének javításában? - Szisztematikus áttekintés
Authors: Nagy Barbara
Published: June 2021

A tanulmány célja a családalapú és az iskolai/óvodai táplálkozási programok hatásának felmérése volt a ≤12 éves gyermekek egészségére, beleértve e hatások fenntarthatóságát és a társadalmi-gazdasági egyenlőtlenségek jelentőségét. A szakirodalmi feldolgozás az 1980 és 2014 decembere között a témában megjelent publikációk szisztematikus áttekintésével történt. 39 tanulmány eredményéről számol be, melyek mindegyike magas jövedelmű országokban élő, 12 éves kor alatti gyermekkel rendelkező családokat érintő randomizált kontrollált vizsgálat volt, ahol a fő kimeneti változót a táplálékbevitel és az egészségi állapot jelentette.
Ismertetés: Iskola-alapú tanterv a depresszió-műveltség fejlesztésére amerikai középiskolás diákok számára: egy randomizált hatásosság-vizsgálat
Authors: Maczali Katalin
Published: June 2021

A cikk célja, hogy meghatározza a Fiatalok De-presszió Tudatosság Programjának (FDTP), egy univerzális, iskola-alapú depresszió-edukáció programnak a hatásosságát a standard egészség-edukációs tanmenettel összehasonlítva, valamint hogy felmérje a depresszió-műveltség fejlesztésének fenntarthatóságát egy 4 hónapos után-követéssel.
«Eastern Partnership» after the Vilnius Summit
Authors: Chernova A.
Published: June 2021

The third summit of EU's Eastern Partnership held in Vilnius in November 2013 became a real turning point in the development of this organization. And it didn't happen due to signing of the first EU Association Agreement of its kind with the partner states but due to a sudden turn of the largest and most important of them - Ukraine - to the Russia's rival integration project. By doing so Ukraine at least temporarily joined two of the other participating countries: Armenia and Belarus, the latter of which is already in the Custom Union. At the other pole of the Eastern Partnership there are Georgia and Moldavia which initialed the Association and Free Trade agreements with the EU in Vilnius. This widening gap within the Eastern Partnership attracted everybody's attention to the EU - Russia rivalry in the post-Soviet countries which is increasingly interpreted in terms of the clash of civilizations. In this article we'd rather touch upon some of the peculiarities of the Eastern Partnership itself and its participating countries which to a large extent predetermined such an outcome. Among them is the ambiguous legacy of the European Neighbourhood Policy, lack of membership perspective in the EU as well as the nature of societies and elites in these post-Soviet states.