LEONARDO DA VINCI Y LA COMPARACIÓN OJO-CÁMARA OBSCURA by CARLOS ALBERTO CARDONA

“…Este artículo explora si hay algún fundamento sólido para atribuir a Leonardo da Vinci prioridad en la formulación del símil que lleva a concebir el ojo como una cámara obscura. …”
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A Numerical Approach to Study Ablation of Large Bolides: Application to Chelyabinsk by Josep M. Trigo-Rodríguez, Joan Dergham, Maria Gritsevich, Esko Lyytinen, Elizabeth A. Silber, Iwan P. Williams

“…The casual dashcam recordings from many locations of the Chelyabinsk superbolide associated with the atmospheric entry of an 18 m in diameter near-Earth object (NEO) have provided an excellent opportunity to reconstruct its atmospheric trajectory, deceleration, and heliocentric orbit. …”
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Programa de Qualificação Profissional by Cristine Martins Gomes de Gusmão, Elevângela Ferreira Gomes, Thays Mirelly Campos da Silva, Rebeca da Silva Fraga Botelho

“… A inovação pedagógica é uma tendência e necessita de abordagens baseadas em competências técnicas profissionais, que precisam ser trabalhadas para melhor atingir os objetivos estratégicos definidos junto à educação mediada por tecnologia. …”
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Pengaruh Work Flexibility terhadap Job Insecurity pada Karyawan Terdampak Covid-19 by Ahmad Fuad Koirul Rozikin, Cholichul Hadi

“…Nilai korelasi R berdasarkan tabel di atas berada pada angka 0,500. Setelah melakukan pengambilan data dan menguji hipotesis, maka kesimpulan yang dapat simpulkan dari penulis adalah, variabel work flexibility dapat memprediksi variabel job insecurity pada karyawan yang terjadi pada masa pandemi.…”
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Editorial by Marcelo Almeida Bairral

“…Constituem temáticas deste fascículo: a educação algébrica, a construção de demonstrações em um ambiente de geometria dinâmica, o ensino de integral imprópria, a resolução de problemas, o uso da calculadora e de atividades de raciocínio lógico em sala de aula. De alguma forma, os artigos propiciam ao leitor realizar uma articulação transversal das dimensões 'ser' e 'fazer' do docente nos dias atuais. …”
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BAKI–1501 ROMANININ TARİHSEL BOYUTU ÜZERİNE BİR İNCELEME by Sedat Adıgüzel

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The role of parent–child communication on Chinese rural left-behind children’s educational expectation: a moderated mediation analysis by Jia Zhuang, Jacky C. K. Ng, Qiaobing Wu

“…Despite growing scholarly attention, we know little of the effect of parental migration on either parent–child communication or the educational expectations of rural students of different left-behind status (i.e., left behind by two parents; left behind by one parent; or living with both parents). …”
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Proteção e bem-estar na escola: um emaranhado de nós para desatar em contextos pós-pandêmicos by Luciene Regina Paulino Tognetta, Talita Bueno Salati Lahr

“…Assim, a formação dos profissionais que ali atuam torna-se fundamental. Além do que, um alerta deve ser feito: a escola precisará estar atenta a tais demandas no retorno das atividades presenciais ou se tornará, em breve, palco de novas tragédias por representar a convivência não cuidada e a proteção não garantida a crianças e adolescentes vulneráveis.…”
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Democracias representativas en crisis. Democracia participativa y mecanismos de participación ciudadana como opción by María Laura Eberhardt

“…Especialmente en aquellas atravesadas por la crisis de representación desde fines de los ’80, que siguió a la ruptura del Estado de Bienestar y al paso al denominado Estado de la Era Global. …”
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Predicting the habitat suitability of Ilex verticillata (Aquifoliaceae) in China with field-test validations. by Yawen Yin, Zhaobin Hou, Qiuyue Sun, Bailing Zhu, Jiaqi Liu, Yiping Zou, Mingzhuo Hao

“…Since its introduction to China, it has received widespread attention. In the context of climate change today, ensuring its promotion and sustainable production in China is of great significance. …”
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Synthesis of Novel VO(II)-Perimidine Complexes: Spectral, Computational, and Antitumor Studies by Gamil A. Al-Hazmi, Khlood S. Abou-Melha, Nashwa M. El-Metwaly, Kamel A. Saleh

“…A neutral tetradentate mode of bonding is the general approach for all binding ligands towards bi-vanadyl atoms. A square-pyramidal is the configuration proposed for all complexes. …”
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Infrared thermography based fault diagnosis of diesel engines using convolutional neural network and image enhancement by Wang Rongcai, Yan Hao, Dong Enzhi, Cheng Zhonghua, Li Yuan, Jia Xisheng

“…This emerging trend has attracted significant attention from researchers. Convolutional neural network (CNN) has garnered significant attention owing to the exceptional capability in extracting image features. …”
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Supporting undergraduate learning through the collaborative promotion of e-journals by library and academic departments. Electronic journals, E-journals, Higher education,

“…However, the impact on learning, other than trends in usage and some indications of students' and researchers' attitudes, has not been quantified. This paper evaluates a project designed with the primary aim of testing a hypothesis that learning can be enhanced by promoting the use of e-journals. …”
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Cold War in Space: Reconnaissance Satellites and US-Soviet Security Competition by Wawrzyniec Muszyński-Sulima

“…Spy satellites allowed for a better assessment of the other side’s military strength, created a system of early warning for nuclear attacks, and offered a non-invasive way of verifying arms control treaties. …”
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POST-DEMOCRACY. REMARKS ON APPLICATION POSSIBILITIES AND LIMITS OF THE CONCEPT IN THE CZECH CONTEXT by Jan ČAMBORA, Jan HOLZER

“…The text first focuses on the concept of post-democracy and its various definitions in the works of political theorists, while paying crucial attention to Colin Crouch’s and Jacques Rancier´s approaches. …”
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Blood Pressure Control at Rest and during Exercise in Obese Children and Adults by Konstantina Dipla, George P. Nassis, Ioannis S. Vrabas

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Copper metallurgy at the crossroads by Habashi F.

“…However, the horizontal furnace proved to be an inefficient and polluting reactor. As a result many attempts were made to replace it. In the past 50 years new successful melting processes were introduced on an industrial scale that were more energy efficient and less polluting. …”
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Cardioprotective effects of total and anthocyanin-rich extracts of Opuntia ficus-indica fruit on epinephrine-induced cardiac injury in rats by Leila Safaeian, Masoud Sadeghi-Dinani, Zahra Haghighatian, Mohammad-Bagher Fatahian, Marjan Khademizadeh

“…Results: Pretreatment with the hydroalcoholic and anthocyanin-rich extracts of Opuntia ficus-indica at doses of 500 and 1 000 mg/kg reversed epinephrine-induced changes in ECG, heart rate, RR interval, and cardiac histopathology, and attenuated creatine phosphokinase-MB activity and malondialdehyde level. …”
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Yerel tarih etkinliklerinin sosyal bilgiler öğretmen adayları üzerindeki etkilerine yönelik bir durum çalışması by Ramazan Kaya, Hasan Günal

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Contrapunteo entre turismo rural, desarrollo local y territorio en Cuba by Dailén Noa Guerra, Daimes Gascón González, Antonio Ortega Ruiz

“…En esta dirección, el artículo tuvo como objetivo determinar cómo la gestión turística, basada en la utilización de atractivos y recursos controlados localmente y proyectados para pequeños segmen-tos del mercado turístico, dinamiza los procesos de desarrollo en el escenario rural. …”
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