bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamics of Minimal Coupling Quantum Heat Engines
Authors: Łobejko Marcin , Mazurek Paweł , Horodecki Michał
Published: December 2020

The minimal-coupling quantum heat engine is a thermal machine consisting of an explicit energy storage system, heat baths, and a working body, which alternatively couples to subsystems through discrete strokes --- energy-conserving two-body quantum operations. Within this paradigm, we present a general framework of quantum thermodynamics, where a work extraction process is fundamentally limited by a flow of non-passive energy (ergotropy), while energy dissipation is expressed through a flow of passive energy. It turns out that small dimensionality of the working body and a restriction only to two-body operations make the engine fundamentally irreversible. Our main result is finding the optimal efficiency and work production per cycle within the whole class of irreversible minimal-coupling engines composed of three strokes and with the two-level working body, where we take into account all possible quantum correlations between the working body and the battery. One of the key new tools is the introduced ``control-marginal state" --- one which acts only on a working body Hilbert space, but encapsulates all features regarding work extraction of the total working body-battery system. In addition, we propose a generalization of the many-stroke engine, and we analyze efficiency vs extracted work trade-offs, as well as work fluctuations after many cycles of the running of the engine.
Humanização em saúde na graduação em medicina e sua correlação com atividades da IFMSA Brazil
Authors: Villegas Valéria Carolina Armas , Rodrigues Andressa Luciani Pereira
Published: December 2020

When correlating humanization and the medical undergraduate course, students affiliated to the International Federation of Medical Students’ Associations- Brazil (IFMSA Brazil) carry out activities to disseminate and implement the knowledge acquired in their undergraduate course. The objective of the study was to identify how ‘Humanization in Healthcare’ is developed in IFMSA Brazil’s programs, correlating this with the scientific literature. First, an integrative review was performed, and then the reports related to the programs were analyzed. The articles addressed ways of inserting humanization in medical undergraduate courses. Regarding the programs, 15 had the words ‘Humanization’, ‘Art’ and/or ‘Empathy’. The importance of the medical undergraduate course with a holistic view, focused on the person-centered clinical method, is reinforced. The literary approach was applied both by the professor at undergraduate level, in scientific literature, and by students of the Federation. It is evident that humanization in healthcare is addressed both in curricular and in extracurricular activities in medical school.
Graduandos de sete cursos de saúde: entre transtornos mentais comuns e o rendimento acadêmico
Authors: Moreira Jansen Souza , Leal Ludwig Félix Machado , Medeiros Laércia Maria Bertulina de , Morais Mísia Carolyne Pereira de
Published: December 2020

The objective of this study was to investigate the quality of life and psychological suffering in 254 undergraduate students from seven health courses of Universidade Estadual da Paraíba. A sociodemographic questionnaire was used, in addition to a complementary questionnaire with a multiple-choice question, four dichotomous questions, and two open questions, elaborated based on general indicators of Common Mental Disorders, academic experiences and health, respectively. The data were analyzed using descriptive statistics in SPSS-23 and GNU PSPP 1.0.1 (percentage, mean, and standard deviation). The results showed that 61.2% are not satisfied with their academic performance, and 75.7% reported anxiety. Qualitative analysis indicated overload, and reduced time for leisure and physical activities, for example. The need for early identification of Common Mental Disorders in this population is highlighted, aiming at better personal and professional performance, considering the promotion of protective factors and the possibility of mental health support services.
Penerapan Algoritma Fisher Yates Shuffle pada Sistem Pembelajaran Tes Online berbasis Aplikasi
Authors: Akram Muhammad , Kurniati Nia , Salim Yulita
Published: December 2020

Pembelajaran online merupakan model pembelajaran yang tidak hanya berorientasi pada pemberian materi dan tugas secara online namun juga pada sebuah tahap evaluasi. Tahap evaluasi dapat dilakukan melalui sistem terkomputerisasi. Pada proses evaluasi, kecurangan saat menyelesaikan soal dapat terjadi. Penyajian soal secara acak merupakan salah satu alternatif yang dapat diterapkan. Penelitian ini dilakukan di Fakultas Ilmu Komputer Universitas Muslim Indonesia untuk mengukur kemampuan mahasiswa berdasarkan mata kuliah yang telah diajarkan. Pengukuran kemampuan mahasiswa diperoleh dari tahap proses evaluasi yaitu melalui ujian tes berbasis online. Penelitian ini menerapkan metode modern dalam menampilkan soal secara random. Algoritma fisher yates shuffle merupakan algoritma pengacakan yang diolah secara permutasi acak dari suatu set bilangan. Penerapan algoritma fisher yates shuffle berhasil diterapkan pada sistem pembelajaran tes online yang berbasis aplikasi. Secara otomatis sistem yang dirancang mampu menghasilkan persentase nilai tiap mata kuliah berdasarkan pembobotan jumlah skor yang telah ditentukan. Hasil skor diperoleh dari setiap soal-soal yang mampu diselesaikan secara benar. Soal berikutnya akan ditampilkan apabila masa waktu penyelesaian tiap soal telah habis. Penelitian ini menunjukkan bahwa sistem pembelajaran tes online berbasis aplikasi yang dibangun mampu memudahkan dosen mengukur kemampuan sejumlah mahasiswa pada waktu yang bersamaan sesuai durasi waktu yang telah ditentukan.
DIAGNOSIS OF INDUCTION MOTOR BEARING DEFECT USING DISCRETE WAVELET TRANSFORM AND ARTIFICIAL NEURAL NETWORK
Authors: Priyandoko Gigih , Istiadi Istiadi , Siswanto Diky , Effendi Dedy Usman , Naufal Eska Riski
Published: December 2020

Induction motor is electromechanical equipment that is widely used in various industrial applications. The research paper presents the detection of the defect to three-phase induction motor bearing using discrete wavelet transforms and artificial neural networks to detect whether or not the motor is damaged. An experimental test rig was made to obtain data on healthy phase currents or damaged bearings on the induction motor using the motor current signature analysis (MCSA) method. Several mother-level wavelets are chosen on the wavelet method from the obtained current signal. The feature of the wavelet results is used as an input of the Artificial Neural Network to classify the condition of the induction motor. The results showed that the system could provide an accurate diagnosis of the condition of the induction motor.
THE CHARACTERISTICS OPERATIONAL COST OF FREIGHT TRANSPORT IN SOUTH SULAWESI PROVINCE - INDONESIA
Authors: Hakzah Hakzah , Ramli Muhammad Isran , Pawelloi Andi Irmayani
Published: December 2020

Infrastructure development of the freight transport system has a vital position in accelerating Indonesian economic growth. This study aims to analyze one of the dominant characteristics of freight transportation, namely freight transportation costs in South Sulawesi Province. A questionnaire-based interview survey of operators was conducted to determine operator characteristics, vehicle characteristics, trip characteristics, and commodity characteristics. They are analyzing data using a descriptive statistical approach, building a cost and distance relationship model using a regression model approach while analyzing the priority of freight transport selection using an Analytical Hierarchy Process (AHP). An AHP is a decision-making model with multiple criteria. The analysis shows that the high costs are the component costs of the operator’s salary, fuel costs, and vehicle maintenance costs. Operating cost modelling provides a good level of models, both in terms of modes and commodities transported. In contrast, the travel time model based on modes and types of commodities shows inefficient. Based on the results, the pickup mode is optimal in cost and travel time with a weight of 39.8% and 50.3%. Trucks 3-4-5 Axles are the optimal mode of transportation when viewed in terms of distance (58.8%) and transportation volume (65.5%). In contrast, the two Axles Truck has characteristics between Pickups and 3-4-5 Axles Trucks. This result is better developed for a more comprehensive model of the cost of freight transport in South Sulawesi Province, Indonesia.
DECISION SUPPORT SYSTEM FOR SMARTPHONE RECOMMENDATION: THE COMPARISON OF FUZZY AHP AND FUZZY ANP IN MULTI-ATTRIBUTE DECISION MAKING
Authors: Okfalisa Okfalisa , Rusnedy Hidayati , Iswavigra Dwi Utari , Pranggono B. , Haerani Elin Haerani , Saktioto Saktioto
Published: December 2020

Previous researches outlined the advantages of the Analytical Hierarchy Process (AHP) and Analytic Network Process (ANP) methods in solving Multi-Attribute Decision Making (MADM) problems. The advancement of the above methods was continually developed as an effort to cover up various weaknesses. Mainly related to the consistency and linguistic variables in translating the expert opinions. Thus, it initialized the emergence of Fuzzy AHP (F-AHP) and Fuzzy ANP (F-ANP). Due to the restricted operation of these algorithms in smartphone selection, this research attempted to investigate the effectiveness of both methods in providing the analysis of criteria weight, the final recommendation weight, the product recommendation weight, and the execution time in DSS-SmartPhoneRec application development. A survey of one hundred respondents of University students identified the dominant criteria in selecting the smartphone, namely price, Random Access Memory (RAM), processor, internal memory, and camera. Hence, five alternative products were then chosen as the appropriate smartphones’ recommendations based on the respondent’s preferences.  As an automatic tool, a DSS-SmartPhoneRec application was built to analyze and compare between F-AHP and F-ANP methods in resolving the smartphone selection cases. It revealed that the level of consistency of criteria weight, the final weight of recommendation, and the weight that the product-based F-ANP was 40% greater than F-AHP. In terms of execution time, F-AHP had a shorter time than F-ANP. Meanwhile, the comparison of products recommendation from DSS-SmartPhoneRec and a manual test showed that F-ANP was 16% more in line with the respondents’ predilection. In a nutshell, the DSS-SmartPhoneRec administered the devote smartphone recommendations based on the user’s expectation. The comparison analysis furnished a learning outcome for the users in determining the appropriate MADM method tailored to the type of cases.
Mudanças legislativas na lei Maria da Penha: desafios no contexto atual
Authors: Campos Carmen Hein de , Jung Valdir Florisbal
Published: December 2020

A lei Maria da Penha completou 14 anos de existência no dia 7 de agosto de 2020. Por mais de 10 anos, não houve alterações no texto legal, o que representa uma bem-sucedida intervenção política e teórica dos movimentos feministas e de mulheres no Brasil. O presente artigo analisa as mudanças ocorridas a partir de 2017 e os projetos de lei em tramitação no Congresso Nacional, apontando os riscos de alterações sem a discussão sobre os impactos com os movimentos sociais e com a bancada feminina e as dificuldades para impedir que as mudanças ocorram diante do novo cenário político brasileiro.
Generalidades sobre fotografía y memoria de las víctimas del conflicto armado colombiano a partir de tres ejemplos recientes. Reflexiones sobre tragedias compartidas y resistencias
Authors: Ramírez Peña Natalia Vanessa
Published: December 2020

Resumen: Este texto tiene como finalidad mencionar algunas ideas acerca de propuestas fotográficas que han sido generadas a partir del impacto que ha tenido el conflicto armado sobre tres artistas colombianos, quienes sitúan como protagonistas de sus registros, víctimas y situaciones reales. Para dar un apoyo teórico, serán retomadas consideraciones de Didi Huberman, Joel Candau, Ivonne Pini e incluso, opiniones de los mismos fotógrafos, las cuales giran en torno de reflexiones sobre memoria, resistencia, y pasado. Por último, se espera resaltar la importancia de la fotografía como campo que además de presentar variedad de técnicas y formatos, facilita el florecimiento de sentimientos y emociones difíciles de explicar o exteriorizar explícitamente, gracias a su capacidad de connotar símbolos y signos provenientes de experiencias con grandes cargas emocionales, como lo es la pérdida de un pariente a causa de la guerra interna del país.     Palabras clave: fotografía; conflicto colombiano; memoria; víctimas; resistencia ANALYSIS ON PHOTOGRAPHY AND MEMORY OF THE VICTIMS OF THE COLOMBIAN ARMED CONFLICT BASED ON THREE RECENT EXAMPLES. REFLECTIONS ON TRAGEDIES AND SHARED RESISTANCE Abstract: This text tries to mention some ideas about photographic proposals that were generated from the impact that the armed conflict had on three Colombian artists, who place the victims and real situations as protagonists of their records. To provide theoretical support, the considerations of Didi Huberman, Joel Candau, Ivonne Pini and even the opinions of the photographers themselves, which revolve around reflections on memory, resistance and the past, will be taken up again. To conclude, it is expected to highlight the importance of photography as a field in addition to presenting a variety of techniques and formats, it facilitates the flowering of feelings and emotions difficult to explain or bring abroad, thanks to its ability to connote symbols and signs of experiences with great emotional charges, such as, for example, the loss of a relative due to the country's internal war.Keywords: photography. Colombian conflicto. memory. victims. resistance
A Cultura na Trilha dos Guaianás - Uma Inspiração Etnofotográfica no Caminho do Ouro
Authors: Da Silveira Paulo Fernando Pires
Published: December 2020

Resumo: Este ensaio fotográfico inspira-se na Etnofotografia proposta pelo arquiteto e fotógrafo italiano Sandro Spini. As fotos e o texto de abertura da chamada Trilha Guaianá, que compõe a chamada Estrada Real ou Caminho do Ouro. Percorrer Trilha Guaianá através de imagens permite explorar o imaginário das relações entre o passado e o presente das populações pré-colombianas e da colonização europeia e significa experimentar um percurso de ritmos e referências espaciais dissonantes com a experiência de vida moderna.Palavras-chave: Caminho do Ouro. Trilha dos Guaianás. Etnofotografia CULTURE IN THE TRAIL OF THE GUAIANÁS - AN ETNOPHOTOGRAPHICAL INSPIRATION IN THE "CAMINHO DO OURO" Abstract: This photographic essay is inspired by the Etnophotography method proposed by the Italian architect and photographer Sandro Spini. The photos and the opening text address the Guaianá Trail, which makes up the "Estrada Real" (Royal Road) or “Caminho do Ouro" (Gold Way). Walking the Guaianá Trail through images allows to explore the imaginary of the relations between the past and the present of pre-Columbian populations and European colonization and means experiencing a journey of rhythms and spatial references that distune with the experience of modern life.Keywords: Caminho do Ouro. Guaianá Trail. Etnophotography
Um Olhar Antropológico sobre Compostagem e Educação Ambiental no Lago Do Limão (Iranduba/AM)
Authors: Almeida Caroline Soares , Rufino Márcia Regina Calderipe Farias , Iribarrem Camila Garcia
Published: December 2020

Resumo: Este artigo apresenta o relato de uma experiência antropológica sobre a replicação do modelo de Tecnologia Social (TS) de gestão comunitária de resíduos orgânicos no distrito do Lago do Limão, em Iranduba/AM. A TS foi desenvolvida na comunidade Chico Mendes, em Florianópolis/SC por meio do projeto “Revolução dos Baldinhos”, uma iniciativa comunitária e de gestão local.  A implantação da composteira enquanto método socioambiental ocorreu na escola Chico Mendes, com a sensibilização das/os alunas/os e engajamento da turma de 5º. ano na sua construção e alimentação durante o ano de 2019. O processo de ambientalização da comunidade levou-nos a concluir que a transdiciplinaridade é uma condição necessária no trato das questões ambientais. No idioma ecológico das/os estudantes, foi incorporado um modelo de gestão de resíduos orgânicos, ampliando seu conhecimento sobre práticas de separação do lixo e transformação de materiais orgânicos. Enquanto método sócio ambiental, a compostagem  trouxe novos elementos para a abertura de diálogos sobre meio ambiente, sustentabilidade e educação ambiental.Palavras-chave: Tecnologia Social; Compostagem, Educação ambiental; AmbientalizaçãoAN ANTHROPOLOGICAL VIEW ABOUT COMPOSTING AND ENVIRONMENTAL EDUCATION AT LAGO DO LIMÃO (IRANDUBA / AM)Abstract: This article presents the report of an anthropological experience on the reproduction of the Social Technology (ST) model of community management of organic waste in Lago do Limão, district of Iranduba / AM. Such ST was developed in Chico Mendes, neighborhood located in the peripheral region of Florianópolis / SC through the project “Revolução dos Baldinhos”: a community initiative to local management. The implementation of organic waste composting as a socioenvironmental method took place at the Chico Mendes School, with the sensitization of students to the construction, and engagement of the 5th grade class, which during 2019 was responsible for maintaining it. The community's environmentalization process has led us to conclude that transdisciplinarity is a necessary condition in dealing with environmental issues. In the ecological language of the scholars, a solid waste management model was incorporated, expanding their knowledge about the separation of waste and on the transformation of organic materials. As a socioenvironmental method, composting brought new elements to the opening of dialogues about environment, sustainability and environmental education.Keywords: Social Technology; Composting, Environmental education; Environmentalization
Circular economy from waste to resource: 7Rs innovative practices in Amsterdam. Technologie "die nog in de kinderschoenen staan”
Authors: Arisi Barbara Maisonnave
Published: December 2020

Abstract: Amsterdam city is proud of being a worldwide center for innovation, in 2016 it was named by the European Commission as the “European Capital of Innovation” (Iamsterdam 2020). This paper analyses seven innovative practices that deal with solid residue in The Netherlands,  experiences that try to move towards a “circular bioeconomy” (Hetemäki et alli 2017). I classify the innovation cases I researched in reference to the 7Rs: 1) Rethink, 2) Reduce/Refuse, 3) Reuse/Rehome/Repurpose, 4) Recycle, 5) Recreate, 6) Repair and 7) Rot. My main objective is to bring ideas and images to inspire practitioners and academic fellows to experiment or to adapt from these innovation experiences.  I will try to bring some of the new debates concerning the concepts of “circular economy”, “circular society” and the more contemporary one that is “circular bioeconomy” (Hetëmaki et alli. 2017). Finally, to end, I address the role of utopia and imagination as important forces that animate bio/social innovation to reproduce life.Keywords: circular economy; circular bio economy; innovation; solid residue management; Amsterdam. ECONOMIA CIRCULAR - DOS RESÍDUOS AOS RECURSOS:7RS PRÁTICAS INOVADORAS EM AMSTERDÃ.TECHNOLOGIE "DIE NOG IN DE KINDERSCHOENEN STAAN". Resumo: A cidade de Amsterdã orgulha-se de ser um centro mundial de inovação; em 2016 foi nomeada pela Comissão Europeia como a "Capital Europeia da Inovação" (Iamsterdam 2020). Este artigo analisa sete práticas inovadoras que lidam com resíduos sólidos nos Países Baixos, experiências que tentam avançar para uma “economia circular". Classifico os casos de inovação que investiguei em referência aos 7Rs: 1) Repensar, 2) Reduzir/Recusar, 3) Reutilizar/Recuperar/Redirecionar, 4) Reciclar, 5) Recriar, 6) Reparar e 7) CompostaR. O meu principal objetivo é apresentar ideias e imagens para inspirar profissionais e acadêmicos a experimentar ou a adaptar projetos a partir destas experiências de inovação.  Abordo também alguns dos novos debates sobre os conceitos de "economia circular", "sociedade circular" e "bioeconomia circular". Finalmente, e para terminar, trato do papel da utopia e da imaginação como forças importantes para animar a inovação bio/social e para reproduzir a vida.Palavras-chave: economia circular. bioeconomia circular. Inovação. gestão de resíduos sólidos. Amsterdã
Pensando a fotoetnografia: Uma análise da experiência da oficina de compostagem realizada em Iranduba/AM pelo Projeto Revolução dos Baldinhos, de Florianópolis/SC
Authors: Eidt Adriana
Published: December 2020

Resumo: Partindo de uma etnografia realizada dentro do projeto “Avaliação de Tecnologia Social - O Programa Revolução dos Baldinhos e a replicação da gestão comunitária de resíduos orgânicos em comunidades de Florianópolis e Iranduba (AM)”, aprovada pelo programa CNPq/MCTIC/MDS no. 36/2018, a presente monografia pretende analisar como a fotoetnografia foi inserida no trabalho de campo durante uma viagem realizada a Iranduba/ Manaus, para acompanhar uma oficina de compostagem realizada pelo projeto Revolução dos Baldinhos, de Florianópolis.Palavras-chave: Antropologia Visual. fotografia. etnografia THINKING ABOUT PHOTOETHNOGRAPHY: AN ANALYSIS OF THE EXPERIENCE OF THE COMPOSTING WORKSHOP HELD IN IRANDUBA/AM BY THE PROJECT REVOLUÇÃO DOS BALDINHOS, IN FLORIANÓPOLIS/SCAbstract: Based on an ethnography carried out within the project “Avaliação de Tecnologia Social - O Programa Revolução dos Baldinhos e a replicação da gestão comunitária de resíduos orgânicos em comunidades de Florianópolis e Iranduba (AM)”, approved by the CNPq / MCTIC / MDS no. 36/2018, the present monograph intends to analyze how photoetnography was inserted in the field work during a trip to Iranduba / Manaus, to accompany a composting workshop carried out by the project Revolução dos Baldinhos, in Florianópolis.Keywords: Visual Anthropology. photography. ethnography
“Lixo”, Limpeza Urbana e Educação Ambiental na Implantação da Coleta Seletiva de Lixo em Porto Alegre
Authors: Oliveira Wilson José Ferreira de
Published: December 2020

Resumo: Esse artigo analisa o processo de gênese da noção de proteção ambiental como uma das principais diretrizes da ação governamental na administração e gestão dos resíduos sólidos. Tomando como referencial empírico a implantação do programa de Coleta Seletiva em Porto Alegre em 1992, tratou-se de demonstrar que a utilização do referencial ambientalista esteve associado a uma multiplicidade de definições, resultando na agregação de organizações e interesses bastante diversificados na condução deste programa. Tais resultados evidenciam as relações entre os referenciais das políticas públicas e as características próprias do modo de organização e de funcionamento das instituições adminsitrativas e burocráticas. Palavras-chaves: práticas estatais; políticas públicas; proteção ambiental; resíduos sólidos “TRASH”, PUBLIC HEALTH AND ENVIRONMENTAL PROTECTION  Abstract: This article analyzes the genesis of the notion of environmental protection as a reference for government action in the administration and management of solid waste. Based on the implementation of the Selective Garbage Collection program in Porto Alegre in 1992, we demonstrated that the use of the environmental framework was associated with a multiplicity of definitions, resulting in the aggregation of diverse organizations and interests in the leading of this program. Such results show the relationship between public policy references and the dynamics of organization and functioning of administrative and bureaucratic institutions.Keywords: state practices; public policy; environmental protection; solid waste
Performability Evaluation of Voice Services in Converged Networks
Authors: Guimarães Almir Pereira , Rodrigues Dênis Da Silva , Nogueira Bruno Costa e Silva
Published: December 2020

In the last years, the transmission of voice services in converged networks has experienced a huge growth. However, there are still some questions considering the ability of these networks to deliver voice services with acceptable quality. In this paper, we applied analytical modeling and simulation to analyze the quality of voice services using a new index, called MOS a , which considers jointly the MOS index and the availability of the subjacent infrastructure. We consider the influence of different CODECs (G.711 and G.729), queuing policies (Priority Queuing and Custom Queuing), and the warm standby redundancy mechanism. Our goal is to analyze the quality of these services by taking into account overloading conditions in different  architectures/scenarios. These scenarios were constructed using the modeling mechanisms Reliability Block Diagram and Stochastic Petri Nets in addition to a discrete event simulator. Experimental results indicate that the G.711 CODEC has a higher sensitivity both in terms of data traffic volume and allocated network resources in relation to the G.729 CODEC.
Interstícios Semióticos; o possível como um modo de ser: ferramentas para pesquisa em arte.
Authors: Fajardo Roberto
Published: December 2020

A prática da arte no contexto acadêmico e universitário requer a articulação de uma metodologia de pesquisa que possa dar conta de todos os aspectos do imaginário criativo. A partir de uma postura crítica sobre o modelo fundador de nossa epistemologia ocidental, este texto explora a ideia de que apenas a superação da dualidade razão / sensibilidade, em termos conceituais, permite a identificação de novos caminhos para a pesquisa em arte. E termina considerando a "semiose" de Charles Sanders Peirce como a matriz ideal para a abordagem cognitiva da criação artística.AbstractThe practice of art in the context of universities and academia requires the structuring of a research methodology that can encompass all aspects of imaginative creation. Starting with a critical position on the foundational model of our western epistemology, this text explores the idea that only overcoming the reason/sensibility duality in conceptual terms can we identify new avenues for research in art. It ends by considering Charles S. Peirce’s semiosis as an ideal matrix for a cognitive approach to artistic creation.
The effects of heliox non-saturation diving on the cardiovascular system and cognitive functions
Authors:   Department of Exercise Science, College of Health Science, the University of Suwon, Hwaseong-si, Gyeonggi-do, South Korea, Lee Dal-Woo , Jung Su-Jeen ,   Department of Recreation, Seoil University, Seoul, South Korea, Ju Jeong-Sun ,   Department of Exercise Science, College of Health Science, the University of Suwon, Hwaseong-si, Gyeonggi-do, South Korea
Published: December 2020

The purpose of this study was to investigate the effects of a single bout of heliox non-saturation diving on the cardiovascular system and cognitive function. Ten recreational scuba divers (10 males, ~35 years old) participated in this study. These subjects made two pool dives within a one-week interval, alternating gases with compressed air (21% O2, 79% N2) and with heliox (21% O2 and 79% He). The depth was to 26 meters over a 20-minute duration. The results showed that heliox diving significantly increased blood O2 saturation by 1.15% and significantly decreased blood lactate levels by ~57% when compared with air diving (P<0.05). However, there were no significant differences in resting heart rate, systolic or diastolic pressure, core body blood pressure, and pulse wave velocity between the heliox and air dives. The Stroop test showed that the heliox dive significantly increased cognitive function compared with the air dive in both the simple test (Offtime) and interference test (Ontime) (P<0.05). It was concluded that the heliox dive increases blood O2 saturation and decreases blood lactate concentration when compared with air dives. These conditions are likely to help divers reduce hypoxia in the water, reduce the risk of loss of consciousness, reduce fatigue and allow them to dive for longer. Heliox diving may also help judgment and risk coping skills in the water due to the improvement of cognitive ability as compared to air breathing dives.
Carbon monoxide poisoning can act as a stress test to reveal underlying coronary artery disease: case report
Authors: Jiang Jinfeng Jiang , Cooper Jeffrey S. ,   University of Nebraska Medical Center, Omaha, Nebraska U.S.
Published: December 2020

Carbon monoxide (CO) poisoning presents with many different cardiac effects, but one important presentation is its effect as a CO stress test to reveal underlying coronary artery disease (CAD). There are a limited number of publications detailing this phenomenon, but after CO intoxication it is important to suspect CAD in association with mild troponin leak or non-ST segment elevation myocardial infarction (NSTEMI) shown on electrocardiogram (EKG). We recently treated three patients with CO poisoning who had underlying CAD. In the first case a man presented to the emergency department with CO toxicity and an ST segment elevation myocardial infarction (STEMI), resulting in emergent angioplasty and the discovery of severe CAD. The second case involved an individual who presented with CO poisoning with rising troponin levels. An angioplasty discovered a stable 90% occlusion. The third case was a patient with CO poisoning and transient inferior T wave inversion EKG with borderline troponin elevation. Angioplasty showed only 30% occlusion, so the patient’s presentation was likely due to direct CO cardiac toxicity. These cases demonstrate the varied presentations that CO poisoning can have on patients with underlying heart disease. 10.22462/01.03.2020.15
Hyperbaric oxygen treatment results in a group of Turkish central retinal artery occlusion patients with a combined presence of thrombophilic mutations
Authors:   Assistant professor, Adıyaman University Faculty of Medicine Department of Medical Genetics, Adiyaman, Turkey, Çevik Muhammer Özgür , Bağli Bekir Selim ,   Bursa Yüksek İhtisas Training Hospital Dept. of Hyperbaric Medicine, Bursa, Turkey, Çevik Sadık Görkem ,   Assistant professor, Adıyaman University Faculty of Medicine Department of Medical Genetics, Adiyaman, Turkey
Published: December 2020

Background: Central retinal artery occlusion (CRAO) is a rare ocular-ischemic syndrome causing irreversible blindness. Its pathophysiology has not been clarified, and no targeted therapies are available yet. Hyperbaric oxygen (HBO2) therapy is an approved therapy for CRAO and has been shown to improve the visual acuity of CRAO patients safely. However, further clinical data are required to classify HBO2 therapy as a type-I general agreement for CRAO. Materials and Methods: Eleven patients with non-arteritic CRAO were enrolled. Patient demographics, medical history, detailed eye examinations, HBO2 therapy results, pre-/post- HBO2 therapy visual acuity measurements and genotypes for common thrombophilic mutations (Factor V G1691A Leiden, Factor II G20210A, MTHFR A1298C, MTHFR C677T, and PAI-1-675 4G/5G) were obtained. Results: Six patients (54%) responded to HBO2 therapy compared to five non-responders (46%). Patients admitted before 12 hours responded well to HBO2 therapy. No systemic diseases nor advanced age were statistically correlated to CRAO. A combination of mutations rather than single mutations for each patient could be seen as responsible for CRAO. No Factor V G1691A Leiden mutations and only one FII G20210A mutation were observed. Eight patients (72%) had MTHFR 677T allele, five patients (45%) had MTHFR 1298C allele, and 10 patients (91%) had the PAI-1-675 4G allele. Conclusion: Not a single mutation but a combination of mutations and other unknown factors probably lead to CRAO, and if intervention is timely, HBO2 therapy offers improvement in visual acuity safely.
A study of decompression sickness using recorded depth-time profiles
Authors:   DAN America, Durham, North Carolina U.S., Dunford Richard G. , Denoble Petar D. ,   DAN America, Durham, North Carolina U.S., Forbes Robert ,   SULA Diving, Stromness, Orkney UK, Pieper Carl F. ,   Center for Aging, Duke Medical Center, Durham, North Carolina U.S., Howle Laurens E. ,   Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina U.S., Vann Richard D. ,   DAN America, Durham, North Carolina U.S.,   Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina U.S.,   Hyperbaric Center & Anesthesia Department, Duke Medical Center, Durham, North Carolina U.S.
Published: December 2020

Introduction: 122,129 dives by 10,358 recreational divers were recorded by dive computers from 11 manufacturers in an exploratory study of how dive profile, breathing gas (air or nitrox [N2/O2] mixes), repetitive diving, gender, age, and dive site conditions influenced observed decompression sickness (DCSobs). Thirty-eight reports were judged as DCS. Overall DCSobs was 3.1 cases/104 dives. Methods: Three dive groups were studied: Basic (live-aboard and shore/dayboat), Cozumel Dive Guides, and Scapa Flow wreck divers. A probabilistic decompression model, BVM(3), controlled dive profile variability. Chi-squared test, t-test, logistic regression, and log-rank tests evaluated statistical associations. Results: (a) DCSobs was 0.7/104 (Basic), 7.6/104 (Guides), and 17.3/104 (Scapa) and differed after control for dive variability (p<0.001). (b) DCSobs was greater for 22%-29% nitrox (12.6/104) than for 30%-50% nitrox (2.04/104) (p ≤ 0.0064) which did not differ from air (2.97/104). (c) For daily repetitive dives (<12-hour surface intervals (SI)), DCS occurred only following one or two dives (4.3/104 DCSobs; p<0.001) where SIs were shorter than after three or more dives. (d) For multiday repetitive dives (SIs < 48 hours), DCS was associated with high multiday repetitive dive counts only for Guides (p = 0.0018). (e) DCSobs decreased with age at 3%/year (p ≤ 0.0144). (f) Males dived deeper (p<0.001) but for less time than females (p<0.001). Conclusions: Collecting dive profiles with dive computers and controlling for profile variability by probabilistic modeling was feasible, but analytical results require independent confirmation due to limited observed DCS. Future studies appear promising if more DCS cases are gathered, stakeholders cooperate, and identified data collection problems are corrected.
Carbon monoxide poisoning while scuba diving: a rare event?
Authors:   Section of Pulmonary, Critical Care and Hyperbaric Medicine, Virginia Mason Medical Center, Seattle, Washington, Hampson Neil B.
Published: December 2020

Contamination of breathing gas is a risk for all divers. Some hydrocarbon contaminants will be sensed by the diver and the dive profile aborted. On the contrary, carbon monoxide may not be recognized by the diver and catastrophic consequences can result. Reported here is the fatal case of carbon monoxide poisoning while scuba diving, an event that has rarely been reported in the medical literature. A detailed review of other published cases of CO poisoning while scuba diving is included, attempting to identify causes in common and propose methods of prevention.
Gevaş İlçesinin Kırsal Turizm Potansiyelinin SWOT Analizi ile Değerlendirilmesi
Authors: SURAT Hilal
Published: December 2020

Gevaş ilçesi sahip olduğu doğal, kültürel ve tarihi kaynak değerler bakımından Van ilinin önemli turizm destinayonları arasındadır. Bu çalışmada, Gevaş ilçesinin kırsal turizm potansiyelini ortaya koyabilmek amacıyla SWOT analizi yapılmıştır. SWOT Analizi için konuyla ilgili doğrudan ilişkili 35 kişi ile görüşmeler yapılmıştır. Yapılan görüşmeler 2018 yılı Haziran, Temmuz, Ağustos ve Eylül aylarında gerçekleştirilmiştir. Görüşmelerin sonuçları değerlendirildiğinde Akdamar Kilisesi’nin varlığı, zengin kültürel değerlerin varlığı ve ilçenin Van gölü kıyısında en uzun sahile sahip olması güçlü yönler olarak öne çıkarken yeterli yatırım ve tanıtım çalışmalarının yapılmaması, tarihi değerlerin ve yapıların korunamaması turizme hizmet edebilecek yeterli alt yapı ve tesislerinin olmaması zayıf yönler olarak değerlendirilmiştir. Çalışma alanında turizm yatırımlarının yapılması yönünde yerel halkın gönüllü olması, yerli turist tarafından tanınırlığının artması ve su sporları aktivitelerine imkân tanıması yönünde fırsatlar sunarken kış mevsiminin uzun olması ulaşım şartlarını zorlaması, tarihi yerlerde kontrolsüzce yapılan yapılaşma, doğal yapı ve tarihi yapıların tahrip edilmesi de tehdit faktörleri olarak değerlendirilmiştir.
Inappropriate COLLISIONS
Authors: Catherine Baker
Published: December 2020

Inappropriate Shift is the title of a co-authored chapter in Collective and Collaborative Drawing in Contemporary Practice [eds Journeaux and Gorrill] by Dr Catherine Baker (Birmingham City University and Kimberley Foster (Goldsmiths University). However, it is part of a larger project conceived in 2015 been the two authors that includes a number of drawing related activities and is ongoing called Inappropriate Collisions.
Pancreatitis aguda secundaria a hipertrigiceridemia severa: caso clínico
Authors: Rozo Ortíz Edward Jassir , Vargas Rodríguez Ledmar Jovanny , Borda Cárdenas Mayra Alejandra , Najar Molano Fransol
Published: December 2020

Introducción: La pancreatitis aguda se considera un proceso inflamatorio del páncreas, el cual resulta de la activación de enzimas digestivas liberadas por esta glándula. Esta entidad patológica está asociada con múltiples etiologías.

Caso: varón de 37 años de edad con cuadro de dolor abdominal en hipogastrio irradiado a la espalda.En el examen físico se encontró taquicárdico, hipertenso, con dolor abdominal a la palpación profunda sin signos de irritación peritoneal. Los paraclínicos mostraban una elevación de los reactantes de fase aguda y amilasa pancreática, los estudios imagenológicos mostraban signos de pancreatitis aguda.

Discusión: la pancreatitis asociada con hipertrigliceridemia se presenta entre el 0,5 % al 1 % de los casos. La tríada inicial del manejo es dieta absoluta, hidratación intravenosa y analgésicos. En el caso de la hipertrigliceridemia, se puede manejar con hipolipemiantes orales o, en caso de niveles mayores de 1000 mg/dL, se puede usar el recambio plasmático, el cual tiene buena efectividad y disminuye los valores a rangos de normalidad en el 80 % de los casos con la primera sesión.
Ultrasonido endoscópico, aplicaciones actuales en tumores sólidos gastrointestinales
Authors: Mosquera-Klinger Gabriel Alonso , Carvajal Gutiérrez Jhon Jaime , Gómez Venegas Alavaro Andrés , Niño Ramírez Sebastián , Cañadas Garrido Raúl
Published: December 2020

La endosonografía es un método diagnóstico que viene revolucionando el abordaje de los pacientes con tumores del tracto gastrointestinal y de otros órganos y estructuras extradigestivas. En la actualidad, se viene posicionando como un método de elección en la evaluación de lesiones subepiteliales gastrointestinales, además en la estadificación de muchos tumores gastrointestinales como esófago, estomago, recto, páncreas. Por lo cual pretendemos hacer una revisión de tema mostrando la evidencia de la endosonografía en indicaciones clásicas y aplicaciones actuales en tumores gastrointestinales.
Holistic Analysis of Cytokine and Cytokine Storm Researches in Scientific Literature: A Bibliometric Study of the Global Publications between 1980 and 2018
Authors: Şahin Mustafa , Şenel Engin
Published: December 2020

Aim: Bibliometrics has been used for assessing and predicting trends in
macro-health science and medical systems, especially in the field of
cancer. Bibliometric and scientometric studies in the field of cytokines
may guide further research in this field. Cytokines in particular
cytokine storm has recently started to be highly discussed and studied
in global viral infections. In the SARS-CoV-2 pandemic, cytokine storm
was seen in many patients. In this study we want to present to perform
bibliometric analysis of articles on cytokine and cytokine storm
published in the academic literature during 1980 to 2018. Methods: The
bibliometric analysis was performed using the Thomson Reuters Web of
Science database. Results: A total of 232,606 articles were retrieved,
82.52% of which were original articles. The United States was the
leading country by total publication number (n=84,426, 36.29%),
followed by Japan (n= 21,983, 9.45%) produced the most literature on
cytokine. Among the institutions identified, Harvard University (USA)
contributed the most articles on cytokine. All authors and institutions
in the top 10 contributor’s lists were from the developed countries.
Conclusions: Researchers from the developing and least-developed
countries should be encouraged to perform novel studies on cytokine.
Cytokine studies are associated with the pathology and physiological
variability of many diseases and may have beneficial results in the
medical field. Cytokine and cytokine storm studies may be particularly
useful in identifying the pathogenesis of global viral infections such
as SARS-CoV-2, evaluating and developing new treatment strategies.
Storage-discharge characteristics of an alpine active rock glacier catchment – a multidisciplinary approach applied to the Innere Ölgrube, Austrian Alps
Authors: Wagner Thomas , Kainz Simon , Krainer Karl , Winkler Gerfried
Published: December 2020

The active rock glacier “Innere Ölgrube”, and its catchment area
(Ötztal Alps, Austria) are assessed using various hydro(geo)logical
tools to provide a thorough catchment characterization and to quantify
temporal variations in recharge and discharge components. During the
period from June 2014 to July 2018, an average contribution derived from
snowmelt, ice melt and rainfall of 35,8 %, 27,6 % and 36,6 %,
respectively, is modelled for the catchment using a rainfall-runoff
model. Discharge components of the rock glacier springs are
distinguished using isotopic data as well as other natural and
artificial tracer data, when considering the potential sources rainfall,
snowmelt, ice melt and groundwater. Seasonal as well as diurnal
variations in runoff are quantified and the importance of shallow
groundwater within this rock glacier-influenced catchment is emphasized.
Water derived from ice melt is suggested to be provided mainly by
melting of two small cirque glaciers within the catchment and
subordinately by melting of permafrost ice of the rock glacier. The
active rock glacier is characterized by a layered internal structure
with an unfrozen base layer responsible for groundwater storage and
retarded runoff, a main permafrost body contributing little to the
discharge (at the moment) by permafrost thaw and an active layer
responsible for fast lateral flow on top of the permafrost body.
Snowmelt contributes at least 1/3rd of the annual recharge. During
droughts, meltwater derived from two cirque glaciers provides runoff
with diurnal runoff variations; however, this discharge pattern will
change as these cirque glaciers will ultimately disappear in the future.
The storage-discharge characteristics of the investigated active rock
glacier catchment are an example of a shallow groundwater aquifer in
alpine catchments that ought to be considered when analysing (future)
river runoff characteristics in alpine catchments as these provide
retarded runoff during periods with little or no recharge.
New insight into effects of 4d transition metals doping on the photocatalytic activities of anatase TiO2(101) surface
Authors: Ren Yuehong , Han Qingzhen , Su Qiaozhi , Yang Jie , Zhao Yuehong , Wen Hao , Jiang Zhaotan
Published: December 2020

Aiming at improving the visible-light photocatalytic activities of
TiO2(101) surface (TiOS) we make an in-dept study on the TiOS doped with
4d transition metal (TM) atoms. It is shown that the 4d TM dopings can
not only produce new impurity energy bands in the bandgap but also
result in the semiconductor-metal phase transition. Consequently, the
visible-light absorption is strongly strengthened due to the dopings of
Y, Zr, Nb, Mo, and Ag, while it is only weakly improved for Tc, Ru, Rh,
Pd, and Cd dopings. The improvement in visible-light absorption can be
attributed to the intraband or interband transition of electrons.
Moreover, the photocatalytic activities are explored, and we find Y and
Ag dopings can effectively enhance the photocatalytic activity of TiOS.
Thus the mechanism of improving photocatalytic activity of TiOS has been
clearly addressed, which is beneficial to further experimental and
theoretical researches on TiO2 photocatalysts.
Micromechanism of cumulative damage in bearing steels under Rolling Contact Fatigue
Authors: Sun Yachao , Cao Hongrui
Published: December 2020

Rolling Contact Fatigue (RCF) is harmful and inevitable to bearings and
usually results in the initiation of subsurface damage. This paper
focuses on the cumulative mechanism of subsurface damage in bearing
steels arose from cementite during RCF. The distribution of subsurface
shear stress in bearings was investigated by finite element simulations.
A two-phase atomic model of bcc-Fe and cementite was built. Ten
alternating shear load cycles were applied when the model was initially
in the elastic, elastic-plastic and plastic stages, respectively. The
results show that cyclic softening diversely occurs in all three types
of stress responses, and the progress of plastic accumulation depends on
the amplitude of cyclic load and cycles. Severe shear deformation
eventually leads to the damage of the cementite phase, which might be
the microscopic mechanism of the fatigue failure of bearing steels. The
conclusions presented have general applicability to brittle inclusions
in bearing steels.
Effective Green Human Resource Management and Corporate Social Responsibility Strategy for Sustainable Development in the 21st Century
Authors:   Summit University Offa, Nigeria, Olanipekun W.D. , Olanipekun I.O. , Bamidele A.G. , Awe O.I.
Published: December 2020

Corporate social responsibility is an activity embarked upon by organisations as a way of giving back to the society what was previously deposited in the organisation’s coffers as revenue. In the same vein, environmental challenges in the 21st century brings to the fore, a new approach which allows all hands to be on deck to ensure effective CSR geared towards sustainable development. This event birthed the concept of green human resource management which was examined vis a vis CSR as tool for the realisation of sustainable development in the 21st century. This paper gives a clear understanding of how effective GHRM and CSR strategy can drive sustainable development. The study concluded that premium should be placed on the human capital of every organisation using the GHRM framework; this will not only motivate employees to become partners in progress, it also bestow upon them a huge sense of responsibility that will assist organisations to succeed in their CSR activities which will have a long lasting positive effect on sustainable development. Keywords: GHRM, Corporate Social Responsibility, Sustainable Development, Organisations
Can there be a negative aesthetic judgement on sublime?
Authors: Cvejic Igor
Published: December 2020

When we talk about the aesthetic judgement in Kant, certainly the main
example is the judgement of taste, that is, beautiful and ugly. However, in
addition to the judgement of taste, Kant speaks of another kind of aesthetic
reflexive judgments - sublime. The main question addressed in this paper is
whether in the case of the sublime we can speak of a negative aesthetic
judgment, a judgment of what would be contrary to the sublime in the way
that the ugly is opposite to the beautiful. After considering the
similarities and differences of the ugly and sublime and outlining the
formal problems of thinking at all about the aesthetic judgment of what is
contrary to sublime, we will try to give a positive answer. The content
(object) argument will be considered first, then the argument based on the
relation of faculties, which will prove to be insufficient. The closest
solution will be to consider in the specific kind of ridiculous.