bluuebunny/crossref_metadata_2025 huggingface dataset:
Selective Recovery of Platinum (IV) from HCl Solutions Using 2-Ethylhexylamine as a Precipitant
Authors: Matsumoto Kazuya , Sezaki Yuto , Hata Yuki , Jikei Mitsutoshi
Published: April 2021

The selective separation and recovery of specific platinum-group metals (PGMs) from metal mixtures is a significant challenge owing to the similarity of these metals in terms of chemical and physical properties. Among the typical PGMs (Pd, Pt, and Rh), the selective recovery of Pt prior to the recovery of Pd and Rh is in high demand. In this study, we attempted the selective precipitation of Pt(IV) from mixed-metal HCl solutions using 2-ethylhexylamine (2EHA) as a precipitant and achieved the selective precipitation of Pt(IV) from Pd(II) and Rh(III) over a wide range of HCl concentrations. Selective precipitation of Pt(IV) was also achieved from HCl solutions with high levels of base metals, such as Al, Cu, Fe, and Zn. High yields of undegraded 2EHA remaining in the HCl solution after Pt(IV) precipitation were recovered using hydrophobic porous resins. X-ray photoelectron spectroscopy and thermogravimetric measurements revealed that the Pt(IV)-containing precipitate was an ion-pair comprising one [PtCl6]2− and two ammonium cations of 2EHA. The steric hindrance and high hydrophilicity of 2EHA suppressed the formation of Rh(III)- and Pd(II)-containing precipitates, respectively, resulting in the selective precipitation of Pt(IV).
Sorption and Desorption of Vanadate, Arsenate and Chromate by Two Volcanic Soils of Equatorial Africa
Authors: Gonzalez-Rodriguez Sara , Fernandez-Marcos Maria Luisa
Published: April 2021

Sorption of oxyanions by soils and mineral surfaces is of interest due to their role as nutrients or pollutants. Volcanic soils are variable charge soils, rich in active forms of aluminum and iron, and capable of sorbing anions. Sorption and desorption of vanadate, arsenate, and chromate by two African andosols was studied in laboratory experiments. Sorption isotherms were determined by equilibrating at 293 K soil samples with oxyanion solutions of concentrations between 0 and 100 mg L−1 V, As, or Cr, equivalent to 0−2.0 mmol V L−1, 0−1.3 mmol As L−1, and 0−1.9 mmol Cr L−1, in NaNO3; V, As, or Cr were determined by ICP-mass spectrometry in the equilibrium solution. After sorption, the soil samples were equilibrated with 0.02 M NaNO3 to study desorption. The isotherms were adjusted to mathematical models. After desorption with NaNO3, desorption experiments were carried out with a 1 mM phosphate. The sorption of vanadate and arsenate was greater than 90% of the amount added, while the chromate sorption was much lower (19–97%). The sorption by the Silandic Andosol is attributed to non-crystalline Fe and Al, while in the Vitric Andosol, crystalline iron species play a relevant role. The V and Cr sorption isotherms fitted to the Freundlich model, while the As sorption isotherms conformed to the Temkin model. For the highest concentrations of oxyanions in the equilibrating solution, the sorbed concentrations were 37–38 mmol V kg−1, 25 mmol As kg−1, and 7.2–8.8 mmol Cr kg−1. The desorption was low for V and As and high for Cr. The comparison of the sorption and desorption isotherms reveals a pronounced hysteresis for V in both andosols and for Cr in the Silandic Andosol. Phosphate induced almost no V desorption, moderate As desorption, and considerable Cr desorption.
A Review of Range Extenders in Battery Electric Vehicles: Current Progress and Future Perspectives
Authors: Tran Manh-Kien , Bhatti Asad , Vrolyk Reid , Wong Derek , Panchal Satyam , Fowler Michael , Fraser Roydon
Published: April 2021

Emissions from the transportation sector are significant contributors to climate change and health problems because of the common use of gasoline vehicles. Countries in the world are attempting to transition away from gasoline vehicles and to electric vehicles (EVs), in order to reduce emissions. However, there are several practical limitations with EVs, one of which is the “range anxiety” issue, due to the lack of charging infrastructure, the high cost of long-ranged EVs, and the limited range of affordable EVs. One potential solution to the range anxiety problem is the use of range extenders, to extend the driving range of EVs while optimizing the costs and performance of the vehicles. This paper provides a comprehensive review of different types of EV range extending technologies, including internal combustion engines, free-piston linear generators, fuel cells, micro gas turbines, and zinc-air batteries, outlining their definitions, working mechanisms, and some recent developments of each range extending technology. A comparison between the different technologies, highlighting the advantages and disadvantages of each, is also presented to help address future research needs. Since EVs will be a significant part of the automotive industry future, range extenders will be an important concept to be explored to provide a cost-effective, reliable, efficient, and dynamic solution to combat the range anxiety issue that consumers currently have.
papel da União Africana na estabilização do Burundi
Authors: Otavio Anselmo , Cardoso Nilton César
Published: April 2021

Este artigo analisa a atuação da União Africana (UA) em sua primeira missão de paz no continente, realizada no Burundi. Defendemos a hipótese de que suaeficácia está relacionada à estrutura adotada pela entidade, ou seja à transformação da Organização da Unidade Africana para UA, e seu impacto no âmbito securitário. Ademais, buscamos demonstrar que a nova união garantiu uma melhor dinamização na resolução do conflito no Burundi.
Immigration in the Spanish nation
Authors: Mengibar Ana Caballero
Published: April 2021

The literature suggests that Spain has never had a national identity but is rather an amalgam of regional identities. The accession to the European Union and the arrival of immigrants present new challenges to Spanish identity. Forging a national identity entails both building a solidarity based on ‘belongingness’ and excluding certain groups that might constitute a threat. These contemporary forms of exclusion aligned with immigration can be referred to as neo-racist.
Estado y nación
Authors: Rigi Luperti Maria Aylen , Cabrera Maria Cristina
Published: April 2021

Apresentamos as primeiras conclusões de uma pesquisa realizada com as esposas de antigos empregados da empresa estatal YPF em Caleta Olivia e Cañadón Seco, entre 1944 e 1992, sobre as representações de Estado e Nação. O artigo busca contribuir para um melhor entendimento, em termos de gênero, do sistema de autolegitimação estatal.
Western Sahara
Authors: Martin Juan carlos gimeno
Published: April 2021

This article aims to reveal the complicity of the international community with Moroccan colonialism in Western Sahara. Since 1987, the Moroccan wall separates the Saharawi people into two groups: one group lives under Moroccan occupation, the other lives in exile camps in Southern Algeria. It is a Bedouin village, nomadic, colonized by Spain, but has maintained a persistent anti-colonial resistance and struggle for self-determination.
The Cuban Revolution, Che and Lotta Continua
Authors: Gabbas Marco
Published: April 2021

The article analyses the influence of the Cuban Revolution and of Che on Lotta Continua (LC) – the main organisation of the Italian extra-parliamentary Left – from 1969 until 1974, through the pages of the newspaper Lotta continua. Che was a political and moral example for LC, which by 1974 went beyond myth and reached a balanced view on him. The issue of Che’s relevance in present-day Italy is also assessed.
Razão e imaginação para todos os tempos
Authors: Velho Otávio
Published: April 2021

Partindo das relações entre razão e imaginação enquanto modalidades de conhecimento na obra do filósofo Espinosa, são apresentadas diversas manifestações do imaginário. Definem-se as vulnerabilidades do imaginário, utilizando como exemplo as fake news. Após considerações sobre a razão tomando como caso exemplar o da Ciência, distingue-se um imaginário triste e um imaginário alegre. E privilegia-se este último para a constituição de um imaginário da ciência.
Transformação da percepção da menstruação entre gerações
Authors: Eleutério Mundim Maria Luísa , Polizelli Leite de Souza Milena
Published: April 2021

O presente artigo busca refletir sobre as esferas do tabu acerca da menstruação. Avaliamos como se dá a transformação da percepção e da prática do ciclo menstrual entre gerações, em paralelo com as ideias de profano de Robert Hertz. Por meio de uma netnografia, entramos em contato com mulheres para entender sua historicidade e experiência com o mênstruo. Percebemos que, mesmo diante de uma evolução, persistem, ainda, alguns estigmas.
Banco Mundial e a política científica dos governos militares no Brasil
Authors: Martins Monica Dias
Published: April 2021

Ao longo de décadas, a ingerência do Banco Mundial alastrou-se por quase todos os domínios da atividade pública brasileira. Este artigo trata especificamente das orientações desta agência multilateral para o desenvolvimento científico e tecnológico durante a ditadura militar, destacando a montagem do Sistema Nacional de Desenvolvimento Científico e Tecnológico (SNDCT) e a implantação do Programa de Apoio ao Desenvolvimento Científico e Tecnológico (PADCT).
Falsas respostas à "crise ambiental"
Authors: Silvestre Maria Elisabeth Duarte
Published: April 2021

Arguo que o mais importante efeito da “crise ambiental” tem sido a ampliação do mercado via valoração monetária da natureza. Destaco a mobilização dasagências multilaterais, do Estado e do pensamento acadêmico em defesa de um “desenvolvimento sustentável” baseado no aprofundamento das relações mercantis.
Max Weber y las naciones americanas
Authors: Vernik Esteban
Published: April 2021

El artículo revisa las dos perspectivas sobre la ‘idea de nación’ en la obra de Max Weber. Mientras sus contribuciones a la sociología favorecen una estrategia ‘invencionista’, en sus intervenciones políticas la estrategia es más de tipo ‘esencialista’. Luego de reconstruir los principales componentes de la ‘idea denación’, se presentan dos casos de naciones americanas los cuales son ejemplos de ambas perspectivas analíticas del autor.
Internacionalização produtiva e as relações Brasil-África
Authors: De Souza Romênia Oliveira
Published: April 2021

Com as exportações encabeçando o processo de crescimento da economia nacional e com o aumento dos investimentos diretos no exterior, países africanos se destacaram na implementação de ações da política externa brasileira. Analisou-se esse processo durante os anos Lula pela sua importância relativa para a economia nacional e pela pouca atenção concedida pela academia à referida questão. As estratégias adotadas pelo governo e pelas empresas brasileiras defendem a combinação de políticas ofensivas na busca de saldos comerciais crescentes e constitui-se em uma expansão baseada em commodities, impulsionada pelo interesse dos setores brasileiros em processo de internacionalização.
ensino de ciências por investigação
Authors: Araújo Vívian Helene Diniz , Tristão Juliana Cristina , Santos Leandro Jose dos
Published: April 2021

Neste trabalho foi utilizado uma sequência didática investigativa para contribuir na significação de conteúdos e na reflexão das dificuldades de inserção de conceitos de Química no ensino de Ciências. A sequência foi aplicada em turmas do 6o ano do Ensino Fundamental, abordando o tema “Água". A análise qualitativa, de natureza interpretativa, foi utilizada para abordagem metodológica. Serão apresentadas as observações, o planejamento e os resultados da aplicação da sequência. As atividades realizadas contribuíram para uma maior compreensão e significação dos conceitos trabalhados.
Normatividade e descritividade em referenciais teóricos na área de ensino de Física
Authors: Silva Filho Olavo Leopoldino da , Ferreira Marcello , Polito Antony Marco Mota , Coelho André Luís Miranda de Barcellos
Published: April 2021

Na literatura brasileira relacionada com aplicações didáticas em ciências, frequentemente se verifica que os fundamentos teóricos alegadamente empregados são escolhidos exclusivamente dentre teorias psicológicas de aprendizagem, sem, contudo, que elas sejam utilizadas com a devida propriedade. É possível que esse fenômeno seja uma consequência de um fato evidente: teorias psicológicas estão muito distantes da prática de sala de aula, pois elas foram desenvolvidas para cumprir uma função descritiva e não normativa. Neste trabalho, revisamos esse problema, defendendo a tese de que teorias psicológicas de aprendizagem jamais devem ser utilizadas fora do contexto de alguma teoria da educação, de modo que os fundamentos normativos sejam providos e a conexão com o contexto prático seja alcançada. Como exemplo, construímos uma relação entre a teoria de aprendizagem de David Ausubel e a teoria de educação de Matthew Lipman, mostrando como sua mútua articulação permite alcançar um referencial teórico mais eficiente. Analisamos, por fim, a importância da dimensão psicométrica como concretizadora do nexo entre uma teoria educacional e a(s) teoria(s) psicológica(s) de fundo.
BASIC MODEL OF THE ECONOMY
Authors: Zonova A. V. , Karaulov V. M.
Published: April 2021

The issue of developing a basic model for the functioning of the economy, consisting of five interrelated subsystems, is considered. Mathematical formulas of models are given. The basic model of the economy is presented as a system of equations. The study revealed how the model is built, how it is possible to manage the development of the national economy.
CREDIT SUPPORT OF SMALL AND MEDIUM BUSINESS IN RUSSIA: TYPES, PARTICIPANTS AND ANALYSIS OF THE FACTORS REDUCING IT EFFICIENCY
Authors: Prokofeva E. N.
Published: April 2021

The article stresses the significance of small and medium business to the development of economy and strengthening of social bases of public life. Special consideration is given to the methods of direct and indirect credit support of small and medium business, provided by the banking sector and governmental institutions. The analysis of development of small and medium business in Russian demonstrated the absence of expected positive dynamics. The paper emphasizes the necessity of changes in the principles of participation of the banking system in crediting of small and medium business. It is reasonable to improve efficiency of the process by simplification of the customer crediting procedure.
ON THE EXTREMAL DEPENDENCE COEFFICIENTS OF GAUSSIAN DISTRIBUTIONS
Authors: Khrushchev S. E.
Published: April 2021

The paper considers a way to represent the relationship between indicators in the form of copulas. Copulas are popular mathematical tools. This is due to the fact that, on the one hand, the marginal distributions of indicators are divided in the copulas, and on the other hand, the structure of the relationship between these marginal distributions is divided, which makes it  possible to very effectively study the connections that arise in real  populations. Special attention in the work is paid to extremal dependence coefficients - important numerical characteristics of the connection in conditions of extreme small or extremely large values of indicators. It is shown that even under conditions of close correlation between the indices for a two-dimensional Gaussian distribution, the lower and upper coefficients of the extreme dependence take zero values. This indicates the impossibility of predicting the values of one indicator when fixing too small or too large values of another indicator. This work shows that the relationship between the number of COVID-19 coronavirus infections per 100,000 people and the number of deaths from COVID-19 coronavirus infection per 100,000 people in the regions of the Russian Federation can be represented in the form of a Gaussian copula.
Neke od prepreka oprostu u sekularnom društvu
Authors: Maros Zorica
Published: April 2021

U radu se ne prikazuje zasebna teorija oprosta iz neke strogo sekularne znanstvene discipline nasuprot onoj teološkoj (pod pretpostavkom da je to uopće moguće). Naprotiv, rad analizira prepreke i poteškoće u razumijevanju oprosta, a s njime i pomirenja, proizišle iz osnovnih obilježja suvremene kulture i stavova pojedinih građana. Terapeutska je kultura, uz naglašavanje individualizma, marginalizirala teološko shvaćanje oprosta, a s njom povezana tendencija natjecanja u viktimizaciji, čvrstim konstruktima žrtve i počinitelja, onemogućila je poslijeratnu obnovu društva. Uz to, terminološke nejasnoće oko pojma oprost javljaju se kao oblik samoispunjavajućeg proroštva, proroštva one vrste koja potvrđuje vlast pogreške. Nakon predstavljanja nekih obilježja modernog društva, nadasve terapeutske kulture i s njome olakšanog natjecanja u viktimizaciji (stradanju), rad analizira određene terminološke nejasnoće vezane za pojam oprosta. Zaključno je predstavljena teorija nadređenog identiteta koji slabi nepropusne konstrukte identiteta žrtve i počinitelja, čime olakšava procese oprosta i pomirenja, a u cilju poslijeratne obnove zajedništva.
Virtual Surgery in Implantology: A Systematic Review and State of the Art
Authors: Agreli Kamilla Carneiro , Zotarelli Filho Idiberto José , Kassis Elias Naim
Published: April 2021

Introduction: Dental implant procedures have increased worldwide, reaching approximately one million dental implants per year. The optimization of faster and more accurate techniques by dentists and postoperative surgeons with better results and quality of life stimulated the development of numerous software and hardware for performing computer-guided surgeries, so-called virtual surgeries (VS). Objective: to present, through a systematic review, the main considerations of virtual surgery in dentistry and their respective advantages, disadvantages, and limitations. Methods: The model used for the review was PRISMA. We used databases such as Scielo, Lilacs, Google Scholar, PubMed. Major findings: In the scenario of VS in dentistry, advances in technology have contributed to the improvement of the models, since there was only the direct molding technique to obtain patient models, with the positioning of implants not very favorable in terms aesthetics. The information that is acquired in the 3D reconstructions allows us to determine the quantity and quality of the available bone and also allows the simulation of the installation of the implants in a virtual environment. This provides predictability of techniques and difficulties that can be encountered during surgical intervention, reducing the time and the possibility of errors, allowing the overall reduction of oral rehabilitation costs. Conclusion: Preoperative virtual planning and reconstruction of the mandible guided by dental implants through preoperative designs provide high success rates for the implant and dental rehabilitation, benefiting also prosthetic restorations supported by fixed implants. Still, the concept of using personalized implants with the help of 3D virtual treatment planning, stereolithographic models, and computer-assisted design greatly improves the mandibular restoration and helps to obtain a good facial profile, aesthetic and dental rehabilitation, avoiding complications with the grafts autologous.
Customized weapons identification tests
Authors:   Central Forensic Laboratory of the Police, Bogiel Grzegorz
Published: April 2021

The article raises the issue of individual weapons identification tests which can be performed, including when it is not possible to fire shots in order to obtain comparative material. The article describes one of such cases, involving bursting of the cartridge chamber of a shotgun during the shooting.
MENINGKATKAN KEMAMPUAN BERBICARA SISWA MELALUI MODEL PEMBELAJARAN ROLE PLAYING DI KELAS V SD NEGERI 2 BATARAGURU KOTA BAUBAU
Authors: Muniati Muniati
Published: April 2021

Tujuan penelitian ini untuk mengetahui efektivitas model pembelajaran Role Playing di kelas V SD Negeri 2 Bataraguru. Penelitian ini dilaksanakan di Kelas V SD Negeri 2 Bataraguru pada semester ganjil tahun pelajaran 2014/2015. Hasil penelitian menunjukan bahwa hasil belajar siswa dapat ditingkatkan melalui model Pembelajaran Role Playing di Kelas V SD Negeri 2 Bataraguru. Hal ini ditunjukkan oleh hasil peningkatan sebagai berikut: (1) Hasil belajar yang dicapai oleh siswa kelas V SD Negeri2 Bataraguru, yaitu pada siklus I persentase hasil belajar siswa secara klasikal sebesar  45% dengan nilai rerata 65 dan pada siklus II persentase ketuntasan meningkat menjadi 85% dengan  nilai rerata 74; (2) Aktivitas mengajar guru siklus I pertemuan pertama diketahui memperoleh nilai sebesar 43%, dan pertemuan kedua mengalami peningkatan sebesar 64%. Sedangkan siklus II pertemuan pertama sebesar 71%, dan pertemuan kedua mengalami peningkatan sebesar 93%; (3) Aktivitas belajar siswa siklus I pertemuan pertama sebesar 45%, dan pertemuan kedua mengalami peningkatan sebesar 63%. Sedangkan siklus II pertemuan pertama sebesar 73%, dan siklus II pertemuan kedua mengalami peningkatan sebesar 82%, maka aktivitas belajar siswa melalui model pembelajaran menulis karangan melalui media gambar  di kelas sudah terlaksana.
Analisis potensi dan strategi pariwisata pantai di Kabupaten Buru
Authors: Marasabessy Roos Nilawati , Rumkel Lutfi , Susiati Susiati , Masniati Andi , Tuasalamony Kurniati , Amir Nur Fadhilah , Iye Risman , Hatuwe Rahma Satya Masna
Published: April 2021

Tujuan umum penelitian ini adalah 1) untuk menganalisis potensi pariwisata pantai di Kabupaten Buru dan 2) membuat strategi  pengembangan  pariwisatadi Kabupaten Buru Adapun teknik pengumpulan data yang digunakan adalah survey lapangan (field study), wawancara (interview), studi dokumentasi, dan studi literatur. Tempat yang dipilih sebagai lokasi penelitian adalah pantai Jikumarasa dan pantai La Raba. Sumber data dari para responden, yakni masyarakat sekitar kawasan objek wisata, wisatawan, Dinas Pariwisata serta pengelola objek wisata. Analisis data menggunakan analisis SWOT. Hasil penelitian menunjukkan 1) potensi pariwisata pantai Jikumerasa dan pantai La Raba terlihat pada potensi internal dan potensi eksternal. Potensi internal pantai Jikumerasa dapat dilihat pada dua kriteria, yakni (a)  kualitas daya tarik wisata pantai Jikumerasa meliputi tersedianya informasi pantai via daring dan luring; (b) kondisi daya tarik wisata pantai Jikumerasa tampak pada kondisi alam dan kondisi sosial. Potensi eksternal pantai Jikumerasa terlihat adanya dukungan pengembangan, tersedianya aksesbilitas, dilengkapi sarana prasarana. Potensi internal pantai La Raba dapat dilihat pada dua kriteria (a) kualitas daya tarik wisata pantai La Raba dilengkapi dengan tempat bersantai seperti adanya ayunan dan gazebo; (b) kondisi daya tarik wisata pantai La Raba tampak pada kondisi alam dan kondisi sosial. Potensi ekternal pantai La Raba terlihat adanya dukungan pengembangan dari berbagai pihak, tersedianya aksesbilitas serta pengadaan sarana dan prasarana seperti snorkeling dan diving. Adapun strategi  pengembangan  pariwisata pantai Jikumerasa dan pantai La Raba di Kabupaten Buru sebagai berikut sesering mungkin update berita terbaru tentang kondisi dan keunikan pantai baik lewat daring ataupun luring, melakukan kerjasama dengan biro travel.
Understanding Heritability in the Context of Reading Ability and Instruction
Authors: van Dijk Wilhelmina , Daucourt Mia Cristina , Hart Sara Ann
Published: April 2021

In this paper, we discuss what heritability is and how it is measured, and explain why estimates of heritability are not always the same in different scientific papers. After providing this foundational knowledge, we bust some common myths about heritability. We end with discussing how teachers can use their knowledge about heritability in their own practice.
STUDENTS' ATTITUDES TOWARDS STATISTICAL SUBJECTS AMONG POLYTECHNIC STUDENTS: COMPARISONS BETWEEN GENDER AND FIELD OF SPECIALIZATION
Authors: Shamdin @ Shamsuddin Muhamad Adha , Mohd Nor Rosniza , Ahmad Bahar Nor Azrin
Published: April 2021

This study aims to identify students' attitude through statistical learning through comparison between gender and field of study taken by students in polytechnics. This study used purposive sampling which consists of 152 polytechnic students from the field of commerce i.e. marketing diploma, accounting, retail management and business. This study used Survey of Attitude towards Statistics (SATS) instrument which contained 36 positive and negative items which consisted of six dimensions of attitude towards statistics. The findings showed a slight difference in student attitude mean score based on gender for female students (mean = 98.40) and male students (mean = 98.05) on statistical subjects. Based on the decision of the random sample t-test being run, the mean difference between male and female students is insignificant, t(150) = -0.263, ρ =0 .793). Comparative attitudes to statistics based on the field of study in polytechnics found that Diploma of Business Studies students showed the highest mean score (100.49), while students from the Diploma of Management of Retailing showed the lowest mean score (96.61). However, based on the decision rather than the one way variance analysis test being run, the difference shown in this mean score is insignificant, F(3, 148) = 2,546, ρ = 0.058. The comparison finds that there is no difference in interest in the statistics between the students' gender and the comparison for different fields of study. Therefore, lecturers can implement effective teaching and learning strategies and there is no need to conduct separate teaching and learning sessions by gender and there is no need to conduct separate teaching and learning sessions according to the field of study in polytechnics.
INTEGRATED AVIATION TRAINING CURRICULUM TRANSFORMATION: THE ROLE OF STRATEGIC LEADERSHIP AND CONTINUOUS QUALITY IMPROVEMENT PRACTICES
Authors: Mohamad Mua’azam , Aboudahr Shorouk Mohamed Farag Mohamed
Published: April 2021

The integrated aviation training curriculum has been implemented to ensure high-quality aviation personnel training in Malaysia. However, the implementation process seemed to be at a slow pace which requires serious attention to strategic leadership and continuous quality improvement practices, especially in aviation training establishments. Therefore, this paper basically aims to discuss the level of strategic leadership and continuous quality improvement through the implementation of an integrated aviation training curriculum among local aviation academies. Additionally, the relationship between strategic leadership and continuous quality improvement practices will also be highlighted. The research utilized a quantitative approach with a survey design to address the research objectives. The respondents were 60 employees chosen from selected flying training academies using stratified random distribution. Descriptive data were collected through the adapted version of the “Strategic Leadership Questionnaires” and the “Continuous Quality Improvement Climate Survey”. Findings indicated that the levels of studied variables were high. Inferential statistics showed that there was a significant positive relationship between strategic leadership and continuous quality improvement practices. Based on the above findings, this paper provides important evidence for the aviation academy management board, national aviation authority, and the aviation community at large with regards to the primary role of strategic leadership and continuous quality improvement practices through the implementation of an integrated aviation training curriculum.
PORTRAITS OF SERVICES AND INSTITUTIONAL DILEMMA OF VILLAGE MATERNITY POST (POLINDES) IN INDONESIAN TRADITIONAL AND TRANSITIONAL VILLAGES
Authors: Trimurni Februati , Sitepu Yovita Sabarina , Ginting Simson
Published: April 2021

Village Maternity Post (Polindes) in the last decade has been present as a health facility that focuses its services on the promotion, prevention, and treatment for maternal and under five-year-old infant health. In addition, due to limited health facilities in the village, almost all existing Polindes provide general health services apart from maternal and infant health. Polindes as a health facility unit designed and implemented in accordance with the principles of community-based health development and therefore the existence and development of these facilities are adjusted to the circumstance and dynamics of the community. The circumstance and dynamics of the community are technically classified based on the village typology. The typology of the village in which the Polindes is established has a significant impact on its strategic role in health services, institutional dynamics, and development programs. This article will describe how the portrait of health services and Polindes institutions in two villages with different typologies in Langkat Regency of North Sumatra Province, Indonesia. The two villages are Kepala Sungai which represents villages with traditional typologies and Teluk Meku which represents villages with transitional typologies.
INCREASING THRIVING AT WORK THROUGH WORKPLACE SPIRITUALITY AMONG GOVERNMENT SERVANT IN PENANG, MALAYSIA
Authors: Ahmad Zulaiha , Fuad Nurwahida , Noor Ramlee Muhammad Faiz , Mat Noor Ahmad Nizan , Ya Syazwani
Published: April 2021

Creating sustainable performance emerged as a crucial issue for any profit and non-profit organization. In this complex and competitive environment, organizations should play a better role in encouraging their employees to thrive at work. Existing evidence from various industries confirmed that thriving at work contributed to organizational performance and helps to mitigate problems such as stress and turnover. This study relied on the socially embedded model to unravel the connection between meaningful work, sense of community, organizational values, and thriving at work. Survey data were gathered from government officers attached from four local government institutions in Malaysia. The analysis employed in the study were Descriptive, Pearson correlation, and Multiple Regression. The study found that thriving positively relates to meaningful work. However, the results surprisingly revealed that a sense of community and organizational values were not significantly related to thriving at work. Interpretations of results, implications, and future research are discussed. Thus, this study will benefit organizations as well as academic researchers.
Estimation of electron affinity of photoacid generators: density functional theory calculations using static and dynamic models
Authors: Okamoto Kazumasa , Kozawa Takahiro
Published: April 2021

The electron affinity (EA) of a photoacid generator (PAG) is an important parameter for estimating the acid generation efficiency in a chemically amplified resist upon exposure to ionizing radiation such as EUV light and an electron beam because the electron attachment of PAG induces PAG decomposition and acid generation. In this study, EAs of ionic and non-ionic PAGs were estimated by density functional theory calculations using static and dynamic models. The former model indicated that radical anions are produced without changing the PAG structure even after electron attachment. The latter model indicated that the product structures are relaxed to their stable structures after electron attachment (dissociative electron attachment). By demonstrating the relationship between the EA and acid yield, the most preferable model was revealed.
Initial nucleation scheme of Ga2O3 on (0001) sapphire by mist CVD for the growth of α-phase
Authors: Takane Hitoshi , Kaneko Kentaro , Ota Yuichi , Fujita Shizuo
Published: April 2021

Recently, α-Ga2O3 has been attracting great attentions as a new wide bandgap semiconductor, however, the reason why metastable α-Ga2O3 is grown by mist chemical vapor deposition (CVD) has not been understood. In this study, in order to elucidate growth mechanism of mist CVD-grown α-Ga2O3, growth processes in the initial stage were investigated by atomic force microscopy, transmission electron microscopy, and X-ray diffraction reciprocal space mapping. We found that the characteristics of mist CVD make the relaxation mechanisms of α-Ga2O3 on (0001) sapphire different from those of molecular beam epitaxy, pulsed-laser deposition, and metalorganic chemical vapor deposition. We also proposed the growth procedure in the initial stage.
طبيعة الأسطح المعمارية والعلاقات التركيبية التي تنتظم بموجبها لبناء الاستقرار والتوازن الشكلي
Authors: Shareef Anwar
Published: April 2021

يمثل السطح المعماري احد ركائز التكوين الشكلي الاساسية والتي تعمل مع بعض لإعطاء المظهر الخارجي للمبنى وخصائصه الشكلية, وأهم التحديات التي تواجه دراسة العمارة بشكل عام هو تحليل العلاقات التركيبية التي ينتظم بموجبها التكوين الشكلي وصيغ توليد انماطه ضمن التوجهات المعمارية المختلفة للاستفادة منها في عملية التعليم المعماري. مثلت هذه الورقة البحثية خطوة في طريق تحليل وتأسيس قاعدة معلوماتية لطروحات معمارية تعاملت مع السطوح المعمارية وفق علاقات تركيبية باليات ارتباط وتحوير متعددة, وتطبيق ذلك على نماذج منتخبة لأعمال معمارية بارزة عبر التاريخ المعماري, ومن ثم بلورت هذه الاليات وتوضيحها بشكل دقيق بجداول تحليلية وصفية ورسوم تفصيلية باستخدام برنامج الاوتوكاد، وصولا الى خصائص التكوين الشكلي على مستوى التوازن والاستقرار الناتج عن طبيعة هذه السطوح والعلاقات التي ترتبط بموجبها, واعتمد منهج البحث بناء اطار نظري شامل عن الشكل والسطوح المعمارية والعلاقات التركيبية, اذ يعد هذا ضرورة لاستكشاف الاليات التي يعمل بموجبها المصمم ضمن التوجهات المعمارية المختلفة واثرها على الاستقرار والتوازن الشكلي.
The Development of Flipped Learning Model Based on MyBrilian to Support Planned Online Learning
Authors: Sunarto M. J. Dewiyani
Published: April 2021

The Covid 19 pandemic period has changed the learning system, including the presence of online learning. Literature reviews from various sources state that the Flipped Learning model is an alternative model for planned online learning. Even so, the Flipped Learning model cannot be implemented directly, but it must be adapted to the conditions where students learn. The development of the Flipped Learning model in this study is supported by a Moodle-based e-learning campus, which is called MyBrilian, through the following syntax: (1) Introduction, (2) Exploration, (3) Study, (4) Exposure, and (5) Assessment. This study involved 66 students of Information System study program of Universitas Dinamika who took Basic Mathematics courses. The instrument used is the Lesson Plans, Student Learning Materials and Test Instruments. Data analysis through statistical descriptive and qualitative descriptive techniques. Based on the data analysis, it can be concluded that the learning is classified into increased knowledge on a high scale, namely N-Gain of 0.7, and based on student response questionnaire, it shows satisfactory results in each syntax. The conclusion is that the flipped learning model can be adopted as an implementation of planned online learning, by adjusting to local learning conditions and with the support of technology.
Kepentingan Ekonomi Politik Indonesia dalam Kerjasama Comprehensive Economic Partnership Agreement dengan Australia
Authors: Murtasidin Bahjatul
Published: April 2021

Dinamika hubungan diplomatik Indonesia - Australia yang di susul dengan defisit neraca perdagangan membuat Indonesia berinisiatif untuk memperkuat kemitraan ekonomi yang komprehensif. Hal ini juga selaras dengan salah satu prioritas kebijakan Presiden dan Wakil Presiden RI periode 2014 – 2019, yaitu penguatan bidang ekonomi. Oleh karena itu, upaya diplomasi ekonomi Pemerintah RI dilakukan antara lain melalui fasilitasi perdagangan melalui perjanjian dagang dengan negara mitra. Indonesia-Australia Comprehensive Economic Partnership Agreement (IA-CEPA) merupakan skema perjanjian kerjasama yang bertujuan untuk meningkatkan perdagangan dan investasi kedua negara, mengintegrasikan ekonomi baik bilateral, dan membentuk pondasi yang kokoh diberbagai area kerjasama. Penelitian ini menggunakan teori kepentingan nasional dengan metode analisis deskriptif. Hasil Penelitian ini menunjukkan bahwa kerjasama IA-CEPA ini dijadikan sarana untuk memerkuat hubungan bilateral sekaligus upaya untuk mencapai kepentingan ekonomi agar tidak lagi mengalami defisit neraca perdagangannya.
Monitoring overtourism :
Authors: Khalil Md. Ibrahim , Kobra Mst. Khadijatul
Published: April 2021

Destination Management Systems (DMS) come up with comprehensive and latest statistical data on a particular or numerous tourist destinations. DMS make a widespread set of tourism supervision, advancement and fulfillment tools obtainable with tourism products and services, and tourist databases as its basis. However, the core objective of this research is to put forward a common DMS together with sub-systems of DMS to the tourism destinations in Bangladesh to make sure proper tourism administration, particularly in the over-tourists places, by using this common podium. Therefore, the study has been conducted using qualitative case study approach. Focus Group Discussion has been conducted among the technology experts, tourism specialists, concerned government bodies, tourist police and other stakeholders. In addition, interviews among associated destination management organizations with structured questionnaire have been taken to embody the idea. DMS are of great use to manage the tourist flow and to have appropriate statistics. It helps to connect with national server to put a ceiling on number of visitations in an area. This platform can be used for both marketing and de-marketing of destinations according to individual situations. Categorizing tourists, their preferences, characteristics and most importantly to lessen the seasonality of tourism business this system is indispensable. Furthermore, this research can overlay the way onward to have suitable management over the tourism systems in Bangladesh by providing required guidelines to form and maintain DMS entirely.
Mechanical and mathematical model of a caterpillar drive with a triangular contour for solving problems of vertical dynamics of a tracked vehicle
Authors: Poddubnyiy V.I. Trehtler A. , Trehtler A. , Varkentin A. , Henke K.
Published: April 2021

A mechanical and mathematical model of a caterpillar drive with an analytical description of the interaction of a caterpillar with rollers, implemented in the RecurDyn program, is presented. The influence of the caterpillar on the vertical dynamics of the vehicle is established by mathematical modeling of the movement.
Keywords: mechanical and mathematical model, caterpillar drive, triangular contour, vertical dynamics of the vehicle, RecurDyn program.
poddubny@list.ru
Substantiation of the allowable measurement error when controlling deviations of the shape and lication of the surfaces of parts
Authors: Shkaruba N.Zh. , Leonov O.A.
Published: April 2021

Criteria for choosing measuring instruments for controlling deviations in the shape and location of surfaces of parts are theorerically substantiated, taking into account the formula for their calculation as a result of indirect measurements. The allowable measurement errors and limiting errors of measuring instruments for monitoring the deviation of the shape and location of the surfaces of new parts of Yaroslavl Motor Plant engines were determined.
Keywords: control, indirect measurements, error, deviations of the shape and location of surfaces, measuring instruments, allowable error.
metr@rgau-msha.ru
Improvement of the properties of the surface layer of cast iron castings
Authors: Rasulov F.R.
Published: April 2021

The possibility of improving the mechanical properties and corrosion resistance of the casting surfaces is being considered. The impregnation of the powder composition with liquid iron when it is poured into a casting mold to obtain surface-alloyed castings with a low content of chromium and nickel is proposed.
Keywords: surface alloying, powder composite, casting, casting mold, pasting.
resulovfr@gmail.com
IMPROVEMENT OF ABRASIVE TOOLS BY INCREASING THEIR STRUCTURAL AND MECHANICAL CHARACTERISTICS
Authors: Orlov I.YU. , Kryukov S.A. , Baydakova N.V.
Published: April 2021

On the basis of an analytical review, the current directions for improving abrasive tools are identified - the use of a mixture of abrasive materials and the introduction of a filler into the structure of abrasive wheels to improve their characteristics.
Keywords:ABRASIVE TOOL, FILLER, MODIFICATION, STRENGTH, INTEGRATED APPROACH.
sf-visteh@mail.ru
Research of the mechanics of the microcutting process and the formation of a stagnant zone
Authors: Rechenko D.S. , Balova D.G.
Published: April 2021

Investigations of the parameters of the processes of chips and the treated surface formation, taking into account the rounding radius of the cutting blade, made it possible to determine the beginning of the separation of the stagnant zone material. According to the developed model of separation of the processed material, the minimum possible thickness of the chips during cutting is determined.
Keywords: microcutting, blade curvature radius, separation, stagnant zone.
rechenko-denis@mail.ru.
RISCOS E BENEFÍCIOS DA MOBILIZAÇÃO PRECOCE EM PACIENTES INTERNADOS EM UNIDADE DE TERAPIA INTENSIVA EM UM HOSPITAL REFERÊNCIA NA CIDADE DE BELÉM-PA: RELATO DE EXPERIÊNCIA
Authors: Matos Victória Gabriela de Carvalho , Souza André Felipe Gonçalves , Torres Eduarda Vieira , Moraes Marcella Sayara Branco de , Miranda Blenda Danielly Libdy , Costa Leonardo Ramos Nicolau da
Published: April 2021

Introdução: Há, cada vez mais, se têm sobreviventes de doenças críticas, os quais contraem complicações severas decorrentes da longa permanência na Unidade de Terapia Intensiva (UTI). Neste sentido, a mobilização precoce (MP), quando realizada de maneira segura, pode diminuir estes efeitos deletérios, gerando uma recuperação mais rápida para esses pacientes. Objetivo: Relatar a experiência de acadêmicos do curso de Fisioterapia em uma Unidade de Terapia Intensiva em um hospital referência na cidade de Belém-PA, acerca dos riscos e benefícios da mobilização precoce em pacientes hospitalizados. Métodos: Trata-se de um estudo descritivo do tipo relato de experiência vivenciado no Hospital Metropolitano de Urgência e Emergência (HMUE) entre o mês de agosto e setembro de 2020. Discussão: A fisioterapia tem como principal objetivo preservar, melhorar e restaurar quando necessário a capacidade funcional dos pacientes, diminuindo os riscos do repouso prolongado e garantindo independência física. A aplicação das técnicas de MP foram utilizadas tanto em pacientes conscientes como em pacientes com uso de sedativos. Obteve-se respostas positivas nos sinais clínicos, exames complementares, tempo de internação hospitalar, tempo de permanência em ventilação mecânica, entre outros. Considerações finais: A experiência proporcionada pelo estágio supervisionado foi rica em novos conhecimentos, contribuindo de forma significativa para a formação profissional, integrando assim, a teoria vivência em sala de aula com a prática realizada na área hospitalar.
Patriotic Education: Theoretical and Methodological Problems of Pedagogical Research
Authors: Kuznetsov Andrei S.
Published: April 2021

. Solving the problem of patriotic education of children and youth in modern Russia requires research at the methodological level, taking into account modern socio-cultural conditions and the established practice. Its further statement is caused not only by changes in social relations, but by changes in the person himself. The phenomenon of patriotism received its characteristics: as a part of consciousness and worldview; as a feeling caused by the satisfaction of social needs; as a moral position. The author described three main methodological problems of patriotic education: problems of nature and mechanisms of formation of patriotism; problems of the object and content of patriotic attitude; the problems of assessing the results of patriotic education. Possible ways of their solution are identified.
The Phenomenon of World Image in Fine Arts
Authors: Varova Natal’ya L.
Published: April 2021

The article shows that the basis of the achievements of the Modern Times art is the formation of the idea of the world in the mind of the artist. The attractor, the assemblage point of the phenomenon is the completeness of the experience of the multidimensional composition of being. The phenomenon of the image of the world is formed in voluntary acts of self-awareness throughout the artist’s life. In the creative process, the development of an ideal artistic image and the creation of a material form of its embodiment occur in relation to the phenomenon of the image of the world.
Philosophical and Anthropological Meaning of the Concept of “Objectification” from Classical German Philosophy to Freudomarxism
Authors: Dolgitskii Oleg D.
Published: April 2021

This article analyses the concept of “objectification” from the point of view of philosophical anthropology in the works of Hegel, Feuerbach, Marx, Fromm, Marcuse and Zhizhek. In the process of analysing the works of these authors, the philosophical and anthropological meaning of the phenomenon of objectification was revealed. As a result of the study, the author comes to the conclusion that the search for an objectified basis in order to overcome alienation leads a person to a new understanding of his own essence. In this regard, we propose to deconstruct the objectified images of the ideal person in traditional and modern societies, in order to create the images that will be relevant for a postmodern society.
Historical and Cultural Heritage of Russian Cities As an Element of the Cultural Universe
Authors: Kasatkina Svetlana S.
Published: April 2021

. The article reveals the idea of the cultural universe as the universality and potential infinity of the existence of a person and society, defines its components and approaches to understanding. The historical and cultural heritage of cities is a part of the cultural universe; it performs important functions of preserving the historical memory of the territories. The author examines the features of the historical and cultural heritage of Russian cities, analyses the problems and prospects of its research, preservation and use. The spiritual and material culture of cities, formed in their history, contributes to the ideological, patriotic, and moral education. The article substantiates the importance of the historical and cultural heritage of Russian cities in the development of the cultural universe, in the process of socio-cultural transformation of society, in the formation of the worldview of the individual. It is concluded that it is necessary to study the historical and cultural heritage of cities as a specific phenomenon of the urbosphere.
Social and Individual Modes in “Pedagogical Attitude” As a Space of Understanding
Authors: Navoichik Evgeniya Yu.
Published: April 2021

In the article, in the context of the ideas of the hermeneutic approach, the problem of one-sided understanding of the influence of pedagogical theories and social context on educational practice is considered. The hermeneutic approach makes it possible to analyse the concept of “pedagogical attitude”, in which not only the social context and approaches of science, but also the intentions of the subjects of education, matter.
Artelas a Form of Manifistation of Nationality in Musical Culture
Authors: Poddubnaya Galina G.
Published: April 2021

The musical culture of the people, being inside the integral space of folk art, quite fully reflects the peculiarities of the mentality of the people and manifests its self-identification. The present article analyses artels as a form of being of a nationality in musical culture, which involves the mutual enrichment of collective and individual principles of musical folk art.