bluuebunny/crossref_metadata_2025 huggingface dataset:
Robotic Telemanipulation System for Minimally Invasive Surgery using a Passive Universal Joint and Inertial Sensors
Authors:   Institute of Medical Device Technology, University of Stuttgart, Germany, Sch√§fer Max B , Hemmer Moritz , Gl√∂ckner Anja M , Pott Peter P
Published: June 2022

Robot-assisted surgery (RAS), such as minimally invasive surgery (MIS), performed by means of master- slave telemanipulation systems, has the potential to improve both the surgical outcome in certain procedures and ergonomic aspects for the surgeon [1, 2]. Regarding the widespread use and the levels of complexity and resource consumption, there is a considerable gap between sophisticated RAS systems and conventional minimally invasive procedures. Designing a simplified RAS system for versatile applications could ease this gap, thus it leads to a more widespread use. During surgical procedures, space around the situs is limited, which is further aggravated by bulky RAS systems. Even the setup of multiple manipulator arms is challenging due to additional space-consuming equipment. The design of the manipulator‚Äôs kinematics has a strong influence on this issue. By using a stiff connection between the instrument and the manipulator‚Äôs tool center point (TCP) and a zero-force constraint in the invariant trocar point, in RAS systems it is commonly tried to avoid lateral forces onto the abdominal wall, referring to less trauma for the patient [3]. However, it remains unclear if there is a quantifiable advantage of this feature compared to conventional laparoscopy where those lateral forces are commonly accepted. Further, this approach leads to a relatively large range of motion of the manipulator‚Äôs TCP. Using a passive universal joint between the manipulator‚Äôs TCP and the surgical instrument and accepting the occurrence of lateral forces, might lead to a more compact manipulator design [cf. 4]. Aiming for widespread usage, further simplifications are required. Using standard and off-the-shelf components, such as conventional surgical tools, will potentially increase the applicability to different surgical procedures and will ease the integration into existing infrastructure. Our work aims on the investigation of various aspects regarding the simplification of RAS systems. Thus, there is a need for a reconfigurable and easy to adapt master- slave telemanipulation setup. In this paper, the kinematic approach and the setup of the components are described.
Magnetic Endoluminal Devices Can Assist In Their Own Insertion
Authors:   Department of Mechanical Engineering  and Robotics  Center,  University  of  Utah, Posselli Nicholas  R , Pinegar Emma  K , Abbott Jake  J
Published: June 2022

In the design of long, flexible medical devices that are inserted into a lumen by pushing them from their prox- imal end (e.g., catheters, scopes, cochlear-implant elec- trode arrays), there is a fundamental trade-off between making the device flexible/soft to safely conform to the environment, and making the device stiff to enable the device to be inserted without buckling [1]. A number of continuum medical devices have incorporated magnetic actuation [2]‚Äì[5], typically at the distal end to magnet- ically steer the device in a desired direction. This type of magnetic actuation can reduce insertion forces and/or delay buckling by reducing the total friction between the continuum device and the environment. However, because the magnetic actuation is limited to the distal end, its effectiveness is reduced with increased insertion depth. Our group recently proposed a magnetic-actuation concept for soft endoluminal robots in which the soft robot has two or more axially magnetized permanent magnets distributed along its length, with the magnetiza- tion direction alternating between neighboring magnets, and a rotating external magnet is used to induce a traveling wave in the soft device, causing it to crawl in a deterministic and reversible direction [6]. In this paper, we extend the concept in [6] to soft continuum devices that are inserted by pushing them from their proximal end (Fig. 1). Our basic hypothesis is that if the magnetic-actuation concept is sufficient to cause crawling in untethered devices, it will also reduce the insertion forces required to insert continuum devices. We will show that this is, in fact, the case. We will also show that, in limiting cases, it is even possible to reduce the insertion forces to zero such that the continuum device inserts itself without any proximal-end push.
Robotic Curvilinear Laser Thermal Therapy Probe for Transforamenal Hippocampotomy
Authors:   Department of Mechanical Engineering, Vanderbilt University, Esser Daniel , Peters John , Grillo Abby  M , Garrow Sarah  J , Ball Tyler , Naftel Robert , Englot Dario J , Neimat Joseph , Grissom William A , Barth Eric J , Webster Robert J ,   Department of Biomedical Engineering, Vanderbilt University,   Department  of  Neurological  Surgery,  Vanderbilt  University  Medical  Center,   Department  of  Neurological  Surgery,  University  of  Louisville
Published: June 2022

Epilepsy affects an estimated one out of 150 people, with 30% of patients unresponsive to existing drug- based therapies for seizure management. Hippocampal resection can be a curative procedure for drug-resistant temporal lobe epilepsy [1], however, current rates of surgical resection are limited by perceived and real risks of undergoing neurosurgery [2]. Laser Interstitial Thermal Therapy (LITT) is a less invasive alternative to surgical resection, which heats brain tissue causing thermal necrosis [3]. Existing commercial LITT tools (Medtronic, Monteris) are straight probes which are inserted through the skull. Reaching deep brain targets such as the hippocampus requires traversing significant amounts of potentially eloquent brain tissue [3]. Deploying LITT using curved needles to avoid critical neural structures has been proposed and explored in simulation and computational design [4], [5], but has yet to be demonstrated experimentally. The purpose of this paper is to describe the first experimental prototype of a needle that can deliver LITT along a curved trajectory.
A Steerable Guide for MRI-guided Laser Interstitial Thermal Therapy
Authors:   Department of Mechanical Engineering, Johns Hopkins University, Kim J.S , Fischer R , Cajigas I , Ivan M , Chang D ,   Department of Interventional Radiology, University of Miami,   Department of Neurological Surgery, University of Miami
Published: June 2022

Laser interstitial thermal therapy (LITT) is capable of generating precise ablative lesions under real-time magnetic resonance imaging (MRI) thermometry for the treatment of epilepsy and brain tumors[1]. The Visualase Thermal Therapy System (Medtronic, Inc) is a minimally-invasive LITT platform that delivers laser light through a fiber optic cable ensheathed in a cooling catheter. Currently, the 3-mm diffusing tip may create ablation lesions of a 1cm sphere along a linear trajectory, requiring multiple probe placements to treat lesions shaped irregularly or surrounded by critical structures. In this paper, we present the development of a steerable guide for the Visualase system that enables deployment of the laser fiber along a controlled curved trajectory with micro-adjustability to further enhance its dexterity and treat lesions up to 5cm in diameter. Catheter insertion experiments were performed in tissue-mimicking gelatin phantoms to investigate the safety of the steerable guide system and verify the accuracy of the mathematical trajectory prediction model.
A simple and powerful instrument for robotic flexible endoscopy
Authors:   Institute of Medical Device Technology, University of Stuttgart, Giacoppo Giuliano A , Bachmann Ada L , Pott Peter P
Published: June 2022

To enable more complex operations in single-port surgery, endoluminal surgery, and natural orifice surgery, endoscopic robots are equipped with multiple instrument channels [1, 2]. Such surgery often requires retracting tissue to create sufficient work space for the actual operation. E.g. during a cholecystectomy, the liver must be lifted with an instrument, which requires a payload force of up to 3 N [3]. A cable-driven instrument was developed, which can be used through a working channel of a robotic flexible endoscope. This paper describes the required tensile force to handle a payload force of 3 N deriving specifications for an actuation unit. Therefore, the way the force ratio behaves when the entire length of the instrument’s active section of 75 mm is used, and how the force ratio behaves when a length of 50 mm is used, were investigated. It is intended to provide a simple and powerful instrument to enable more complex surgery with robotic flexible endoscopes.
Design, Fabrication, and Evaluation of a Biomimetic Soft Peristaltic Pump for Biomedical Applications
Authors:   University of Leeds,, Najjari Sina , Culmer Peter , Alazmani Ali
Published: June 2022

Peristaltic pumping can be observed in biological organs which contain hollow tubular cavities, including intestines, esophagus, and ureter [1, 2]. These act as positive displacement pumps where pumping is induced through sequential and periodic expansion and contraction in the tubular cavity [3]. Biomimetic peristaltic pumps are a subset of these pumps that mimic existing biological peristaltic systems closely in respect of size and transport parameters including generated pressure and flow rate. The potential to use soft materials and structures, and provide continuous actuation makes these pumps an appropriate substitute for their biological counterparts in in-vitro experiments. Experiments have been conducted to study the peristaltic rheology of the organs that demonstrate peristaltic actuation [1]. Despite recent advances in soft robotics, current biomimetic peristaltic pumps fail to replicate the pumping performance and self-actuation of biological pumps. Notably, their physical characteristics show limited structural flexibility [1, 4]. This research aims to design and develop a soft peristaltic pneumatic pump for use in biomedical applications, using a biomimetic approach. The contributions of this research include 1) utilizing fully soft materials in pump fabrication, 2) designing multiple identical units which enable the pump to have variable actuation sequences to achieve both forward and backward fluid transport, and 3) a new concept for an adaptable and flexible soft peristaltic pump for use in biological applications which can be tuned to mimic human organ performance (e.g. the ureter, fallopian tube, or esophagus) in an in-vitro environment.
Lifestyle as an Indicator of Central Obesity in Coal Mining Workers from Indonesia
Authors: Setyaningrum Ratna , Nisa Mufatihatul Aziza , Amalia Gusti Firdha , Rahmadani Widya Wati , Firdaus Muhammad Arwi
Published: June 2022

Introduction: Central obesity is an indicator of several non-communicable diseases, influenced by a lifestyle with low physical activity and foods consumption. Statistics in Indonesia showed that central obesity was 3.70% causing death in coal mining workers. However, few studies examine the risk factors for coal mining workers in Indonesia. Thus, this study aims to determine lifestyle indicators of central obesity in coal mining workers.
Methods: It was a cross-sectional study, measuring abdominal circumference with a tape measure, using a standard questionnaire for risk factors of central obesity (age, family history, smoking habits, exercise habits, drinking alcohol habits, and food frequency). The sample was 22 workers of a coal mining company in Indonesia and data collection was done in November 2021.
Results: All respondents were male, were not drinking alcohol, were less than 40 years old (55%), and most had no family history, but five percent (5%) had a family history of diabetes mellitus. Smokers (54.5%), light category smokers (33.3%) with a smoking duration of less than ten years (55.6%), having the habit of exercising less than two times a week, more than equal to 30 minutes per day. Among respondents, most of them consumed eating steamed rice (86.4%), chicken cooked 'habang' (40.9%), tofu (31.8%), kale (54.4%), apples (63.6%), and fried foods (45.5%). Lifestyles that have a relationship with central obesity are the length of exercise per day (0.003), the frequency of eating bread (0.033), and bananas (0.026).
Conclusion: Indicators of central obesity can be prevented by monitoring indicators of lifestyle factors (exercising habits, frequency of eating bread, and bananas).
Uncovering Research Trends in Safety Culture in the Global Construction Industry: A Bibliometric Analysis (1995-2020)
Authors: Otitolaiye Victor Olabode , Ubana Dodeye O. , Palathoti Suvarnaraju , Otitolaiye Adekunle Donald
Published: June 2022

Introduction: Safety culture has mainly been used across several safety management literatures to describe the level of safety within workplaces. This paper presents the research landscape and scientific developments on safety culture in the global construction industry.
Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) approach was employed to identify, screen, and analyze the published documents indexed in the Elsevier Scopus database. Next, the research landscape and scientific developments on the topic were examined by bibliometric analysis (BA) through co-authorship, keywords co-occurrence, and citations.
Results: Results showed that 738 documents were published and indexed on the topic between 1995 and 2020. The findings showed that articles are the preferred medium, whereas Engineering is the preferred subject theme for published documents on the topic. The journal of Safety Science (published by Elsevier) is the most influential source of publications on the topic. In contrast, Dongping Fang, based at Tsinghua University (China), is the most influential researcher due to the substantial research grants and financial support from the National Natural Science Foundation. Further analysis showed that the most prolific authors on the topic are based in China, Australia, and Indonesia, although the United States has published the most documents. BA also revealed large networks of researchers and co-occurring keywords and the organizations and countries that currently exist, collaborate, and cite each other works on the topic.
Conclusion: The findings indicate that safety culture in the global construction industry has undergone significant scientific developments resulting in high research impact mainly due to its role in preserving the health and safety of workers.
Impact of Female Education on Fertility Status of Muslim Community of Susta Rural Municipality: Kudiya, Nawalparasi
Authors: Gyawali Krishna Prasad
Published: June 2022

Background: This study explores the impact of female education on fertility status. Nepal has been experiencing a fertility decline over the last few decades. Although many factors have been shown to influence women’s childbearing, socioeconomic factors such as education and religion are some of the prime factors that mainly influence women’s fertility in Nepal. The major objective of this study is to examine the relationship between education and fertility behavior of the respondents.
Methods: This study is descriptive in nature. Sample of this study consist the 218 married Muslim women randomly selected out of 689 families from Susta Rural Municipality of Parasi. Data were analyzed using the statistics like frequencies, percentages and mean value.
Results: Level of education has inverse relation to fertility. The CEB between illiterate, literate, SLC and intermediate attainment women was found significantly different. Moreover, it was also found that most of the women had knowledge of family planning but they were reluctant to use family planning method.
Conclusion: Major conclusion of this study indicated the inverse relationship between level of education and fertility behavior of Muslim women. Hence, fertility behavior can be changed through education policy intervention over Muslim women in rural area.
Virtual Observations: A Situational Analysis of a Technological Response to Practicum Assessment During a Pandemic
Authors: Mynott John Paul , Foy Katrina , Hendry Faye , Stewart Lorna
Published: June 2022

In response to the Covid-19 pandemic, virtual observations were introduced to assess studentteachers, in a Scottish Initial Teacher Education (ITE) department. This research criticallyreflects on the usage of these virtual observations as they were deployed on a large scale tomeant the emergency requirements of teacher education during a pandemic. Using GroundedTheory as a qualitative frame (Merriam & Tisdell, 2016), this research employs Clarke’s (2005)situational analysis to provide insights into how effective virtual observations are in theassessment of teaching practicum. The research methods involved the collation of individual,written, critical reflections from 17 Practicum Tutors who used video to assess studentteacher competency. These pieces of reflective writing were then thematically analysed andthe resulting coding used to identify commonalities and trends. The importance of theskilled observer, the value of visual information, and the use of supplementary informationwere significant themes that emerged through the analysis. Overall, the effectiveness ofvirtual observations is confirmed, but caveats on its use remain. These caveats sit alongsidequestions of how virtual observation might be used in the future. Exploring the use of virtualobservations as an assessment tool, at scale, gives this paper a unique situation, and itsanalysis adds to the knowledge base for virtual observations and how they can be used withinteacher education.
Structural Design and Analysis of Electric Car Engine Mount
Authors:   Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Indonesia, Adhywinaya I Nyoman , Budiman Bentang Arief
Published: June 2022

In this paper, the analysis of engine mounting structures that will be applied to electric vehicles is conducted. The engine mounting structure will be subjected to static loading from the mounted components assembly, including the assembly of the gearbox, electric motor, and corresponding brackets. In the structure arrangement, HSLA material is mostly used and general structural steel such as AISI 4130 is also used. This study aims to evaluate the existing design so that further optimization steps can be carried out. Simulations and analysis with a static approach were performed using SOLIDWORKS. The stress and displacement contours are then created, and the location of the critical points of maximum stress and maximum deflection can be obtained so that the safety factor of the design can be evaluated. Based on the simulation results, the current safety factor value is very high when compared to using materials with lower physical properties. In addition, it is necessary to develop further studies involving dynamic loading so that it can also be considered to reduce production costs and increase production efficiency.
Communist witches and cyborg magic: the emergence of queer, feminist, esoteric futurism
Authors: Hale Amy
Published: June 2022

The 59th Venice Biennale wove a compelling story about how women engage with magic and spirit. Magic is and always has been a strategy and tactic for living. It is a form of creative resistance, a way of understanding the universe and navigating it, a deeply relational way of being and collaborating with human, non-human and extradimensional entities and even machines. The Venice Biennale was just one element in a new emerging chapter of women’s esotericism in art, one that expands the modern language of magic outward into a series of creative, empowering futures of psychedelic cities, communist witches, plant–human hybrids and beautiful monsters. In her article, Amy Hale disrupts the standard scholarly history of esotericism, transforming the male-centred narrative and demonstrating how women are reconceptualising the modern conventions of the esoteric, the occult and the unseen.
Regional-scale movements in three migratory passerine species on the southeastern coast of the Baltic Sea during autumn migration
Authors: Bulyuk V.N. , Ishchenko I.S. , Panov I.N. , Chernetsov N.S.
Published: June 2022

Much evidence suggests that some passerines during seasonal migrations can perform regional-scale movements, both in the migratory and in the reverse direction. The scale of such movements exceeds the scale of typical stopover movements, but is usually smaller than most migratory flights. We studied regional-scale movements during autumn migration in short-distance migrants of three passerine species: European Robin (Erithacus rubecula Linnaeus, 1758), Goldcrest (Regulus regulus Linnaeus, 1758), and Long-tailed Tit (Aegithalos caudatus Linnaeus, 1758), by analyzing ringing and recapture data from 7 sites on the southeastern Baltic coast at a distance of 11–132 km from each other. The number of birds involved in regional movements varied significantly between species. Long-tailed Tits migrate during the day, and the proportion of birds performing regional-scale movements was one to two orders of magnitude higher than in European Robins (nocturnal migrants) or Goldcrests (migrants with a mixed migratory rhythm). In all three species, the average dates of their regional-scale movements over short distances did not differ significantly between individuals that moved in the migratory and the reverse direction. Regional-scale movements often occurred under headwinds, which suggests that these movements could be caused by aborting migratory flights and (or) by drifting in such winds.
Knowledge, Awareness, and Perception on Contraception Among Women of Reproductive Age Attending Senawang Health Clinic
Authors: Nachimuthu Hemarani , Devi Hemah , Karunanithi Nandini
Published: June 2022

Introduction: Sexual and reproductive health (SRH) are fundamental human rights, which lies with the right of individuals and couples to freely decide the number, timing and spacing of children. Moreover, every individual should receive adequate information and knowledge to make those decisions, and the right to attain the highest standard of SRH. Objective: The aim is to measure the knowledge, awareness, and perceptions on contraception among WRA in Klinik Kesihatan Senawang. Material & Methods. This research is a Cross-Sectional Questionnaire-Based Study Design. A descriptive study with a quantitative approach in gathering data was conducted. A simple random sampling was used in this study to obtain the target participants. The target population are WRA which was selected based on their age ranging between 18 to 49 years.The data analysis was done using the SPSS version 22.In this study, descriptive data was expressed as mean. One-way ANOVA was used for analysis of normally distributed variables. A value of p < 0.05 are considered statistically significant.The data collected was analysed to find the differences between the means of the independent variables mentioned in this study. Results: The total numbers of participants involved in this study were 251. The mean for the total knowledge score is 2.02 (SD±0.50) and the ethnicity had no statistically significant association. Mean for the total awareness score was 3.55 (SD±0.63) and all sociodemographic characteristics showed statistically significant association with awareness. The mean for the total perception score is 3.58 (SD±0.48) and the ethnicity did not show statistically significant associations with perception. Conclusion.The study showed that the KAP about contraception among WRA attending Klinik Kesihatan Senawang were unsatisfactory.
Health and Well-being Benefits of Gardening: A Comparative Study among Gardeners and Non-gardeners in the Philippines
Authors: G. Daiz Bryan , L. Rosales Ezequiel , Rosales L. , De los Santos Janet Alexis A.
Published: June 2022

Aim: This study is aimed to assess the health and well-being benefits of gardening between gardeners and non-gardeners. Methods: A total of 400 respondents participated in the study which was equally sampled between gardeners and non-gardeners. Criterion sampling was utilized in the participant selection. The study utilized standardized questionnaires and was conducted in Central Philippines. The study utilized a quasi-experimental post-test only design. T-test of independent samples was utilized in the analysis. Results: Results revealed that gardeners have considerably higher reports of good health (M=3.40, SD=0.48), higher resilience (M=3.82, SD=.51) and displayed significantly higher reports of coping (M=3.82, SD=.56) than non-gardeners. Non-gardeners on the other hand showed to be more fearful of COVID-19 than the gardener group (M=3.26.SD=.63). Conclusion: Gardening activity is beneficial in maintaining a person’s perceived health and well-being especially in times of distress and social isolation. People who engage in gardening activities are better at adapting to change, making them more resilient and adjusted from grief and loss of a loved one. It is recommended to incorporate gardening as an adaptive means in improving the public’s health and well-being especially at times of health crises.
Progressive collapse analysis of experimental building skeleton based on stress-strain state of columns and joints
Authors: Podshivalov I. I.
Published: June 2022

Purpose: The aim of this work is to compare three methods of the progressive collapse analysis of the experimental building skeleton based on the stress-strain state of the columns and joints. Design technique: The stress-strain state modeling of the columns is performed for the building with the removed intermediate column in the basement. The building includes a basement and represents a reinforced concrete composite frame without collar beams. The MicroFe software is used for three modeling methods, which include quasi-static, dynamic, and kinematic method of limit equilibrium. The MicroFe analysis is combined with the development of the three-dimensional model on a rigid foundation. Findings: The progressive collapse is proven to be impossible for the building skeleton after the removal of the intermediate column in its basement. Originality/value: Based on the three analytical methods, the limit load reproducibility is 15 %. The dynamic analysis gives higher values of the limit load as compared to the quasi-static and kinematic methods. Practical implications: The proposed procedure of three methods for the progressive collapse analysis can be used for the seismic vulnerability analysis.
Прояви креативного мислення у школярів та ліцеїстів
Authors: Алєка Ігор Андрійович
Published: June 2022

У класичній системі освіти учбові програми побудовані, як правило, на запам'ятовуванні, накопиченні фактів та інших нетворчих формах діяльності. Тому більшість учнів чинять серйозний опір, якщо подальше навчання або робота вимагають від них прояву творчих здібностей. Це пов’язано з тим, що прояв таких здібностей у праці для учнів є новизною, і не кожен учень з легкістю пристосовується до нових умов і вимог діяльності. Уникнути таких конфліктів можна, якщо заохочення творчої діяльності почнеться на ранніх стадіях навчально-виховного процесу, ще з дошкільних установ, і продовжуватиметься впродовж всієї трудової, творчої діяльності особитості.
Особливості комп’ютерної залежності у підлітковому віці
Authors: Волохова Яна Олегівна
Published: June 2022

З розвитком суспільства все більша роль відводиться комп’ютерним технологіям і системам. Без сумніву, комп’ютер дуже допомагає людині в житті, але і шкоди наносить чимало. Проблемі комп’ютерної залежності недостатньо приділяється уваги. Особливо ця проблема є актуальною для підлітків, свідомість яких найбільше піддається впливові. Це зумовлено тим, що вони знаходяться на етапі формування, не досягли певного рівня фізичної і психічної зрілості і їм важко протистояти віртуальним можливостям, які дають повну свободу дій і можливість реалізувати себе у віртуальному світі, а не реальному. Підлітки хочуть використовувати можливості комп’ютерної техніки максимально, оскільки потребують контактів і розширення інформаційного простору. Це не в останню чергу призводить до залежності, так званої адикції, яка негативно впливає на соціальний розвиток особистості та від якої важко позбавитися. Цьому присвячені дослідження К. Галкіна, І. Голдберга, Р. Грановської, М. Іванова, О. Лисенко, А. Мудрика, С.Шапкіна, Т. Шишковець, К. Янга та інших фахівців. Однак, специфіка саме соціально - педагогічної профілактики адитивної поведінки підлітків залишилася поза увагою фахівців.
Вплив рівня тривожності та фрустрованості особистості на характеристику стресостійкості в підлітковому віці
Authors: Бондаренко Юлія Олегівна
Published: June 2022

В сучасному модернізованому світі, який наповнений необмеженою кількістю новацій та характеризується швидкоплинністю життя, питання стресу постають дуже гострими та актуальними майже для кожної людини. Широта та інтенсивність поширення стресу досягла катастрофічних масштабів. Тому особливу увагу дослідників привертає питання підвищення стресостійкості людського організму.
Teaching during COVID-19 Pandemic: Students’ Experiences, Perceptions and Lessons for Higher Education Institutes
Authors: Khokhar Ashar Johnson
Published: June 2022

A sudden shift to complete online teaching and learning due to the COVID-19 pandemic created many challenges for educational institutes, their administrators, teachers and students. This study investigated students’ online teaching experiences with the intention to shape higher education institutes’ (HEI) Information and Communication Technology (ICT) integration policies and practices. A mixed-method research approach was used to collect data. The quantitative data were collected using a survey questionnaire and focus group discussion method was used to gather qualitative data. The students’ views of their instructors’ online instructional and assessment strategies revealed that teachers confined themselves to the university guidelines and used the recommended learning management system (LMS) and digital tools but lacked the training to utilise many of the features available in the recommended LMS and digital tools that could be integrated with the LMS due to poor knowledge and ICT skills. This study suggests that HEIs should invest in research to understand students’ choices of digital tools and train teachers to maximise the use of the LMS.
Comparison of ANFIS and FLC as Charging Battery Based on Zeta Converter
Authors: Febian Enggar Bima Ihza , Rakhmawati Renny , Suhariningsih Suhariningsih
Published: June 2022

Solar energy is an unlimited source of energyand its availability will never run out. It can be converted into asupply of electrical energy. And saved into battery throughconverter. There are many people who convert solar energy intoelectrical energy. Unfortunately, when stored in the battery, it isstill necessary to adjust the output voltage of the converter. So, itis need a controller to do it. To solve the problem, we proposeFuzzy Logic Controller (FLC) and Adaptive Neuro FuzzyInference System (ANFIS) control to adjust output voltage whilethe input voltage is fluctuative. We will compare which twocontrollers are better. We used the constant voltage method, andafter we ran the simulation, we got ANFIZ better than FLC.Because we get setting point faster when using ANFIZ. Theresult, it need time 0,04s to get setting point on output voltage
El aula como escenario: Mapeando el Teatro Aplicado en Educación en Chile 2010-2020
Authors: Villanueva Catalina , Ponce Héctor , Faúndez Tania
Published: June 2022

Si bien el ámbito Teatro y Educación ha avanzado hacia una mayor legitimidad en Chile, existen pocas investigaciones respecto de los marcos que guían el quehacer en el aula, emergiendo la pregunta: ¿cuáles son las bases bibliográficas y metodológicas a las que adscriben educadoras/es teatrales en Chile? Para responder a esa pregunta se aplicó una encuesta a personas que realizaron programas de pregrado o extensión en teatro y educación en Chile entre 2010 y 2020. Los hallazgos de esta investigación contribuyen a delimitar o definir este dominio en Chile, confirmando la influencia de marcos conceptuales y modelos cuya prevalencia debe leerse en relación con las reglas que definen la validación-legitimación de determinadas perspectivas y posicionamientos disciplinares.
Experiencia de creación teatral sobre el abuso sexual infantil
Authors:   Bellas Artes Institución Universitaria del Valle, Cali (Colombia), Muñoz Salazar Luz Elena
Published: June 2022

La investigación-creación Experiencia de creación teatral sobre el abuso sexual infantil inició en junio de 2018 en la ciudad de Cartagena de Indias; giró en torno al propósito de identificar aspectos relevantes sobre el abuso sexual infantil, a tener en cuenta en la creación de una obra teatral en la que se empleó una metodología de enfoque cualitativo, con el diseño de Investigación-Acción-Creación como propuesta modificada de la IAP (investigación-Acción- Participativa) de Orlando Fals Borda; la herramienta de investigación se basó en el Teatro Foro de Augusto Boal utilizando dos rejillas como instrumentos para el levantamiento de información: una de registro al espacio de experimentación con actores, aplicada a una pareja de actores participantes del proceso, y otra de registro de laboratorio de espectactores, aplicada a cinco grupos de espectactores y espectadores. La investigación obtuvo como resultado, para direccionar los productos creativos dramaturgia y puesta en escena, los siguientes insumos: las violencias simbólicas contra las mujeres y expresadas en la música, el juego infantil y los relatos populares, la trata de personas con fines sexuales, y los imaginarios colectivos con respecto a las soluciones a situaciones de abuso sexual infantil.
Danza y mercancía: constelación y fetiche
Authors:   Universidad Autónoma de Madrid, Departamento de Filosofía y Ciencias del Lenguaje, Ballarín Miguel
Published: June 2022

Este artículo se propone abordar el encaje particular y actual que la forma mercancía guarda para con la danza, partiendo de una revisión panorámica y crítica pero propositiva de las herramientas teóricas con las que el hecho dancístico se ha tomado y puede tomarse en consideración a este respecto, y desarrollándolas tanto en los sentidos que resulten técnicamente necesarios como en aquellos que pudieran aportar claridad y riqueza a la exposición, con vistas a matizar las posibilidades concretas de alternativa conceptual y profesional a ese formato. Se argumentará en contra de la identificación de las categorías mercantilistas como las únicas o mejores opciones para cumplir con su función explorando casos concretos, históricos y contemporáneos, de relación coreógrafica con el mercado y discriminando a partir de ellos tipologías solventes con las que llevar a cabo el trabajo teórico y práctico en danza.
Sagrarios de la danza: La 'imagen-danza' en la modernidad audiovisual
Authors: Mateos de Manuel Victoria
Published: June 2022

En este texto, partiendo de las tesis de Priscilla Guy (2016) sobre los screendance studies, se presenta una genealogía híbrida de la danza, a la que podría denominarse ‘imagen-danza’ y en la que se expone que la danza no sería un género estético puro o con entidad propia, sino el fruto de un diálogo o incluso un debate o asamblea entre múltiples artes. Haciendo uso de una selección de archivos audiovisuales de los siglos XIX y XX, así como de una revisión de estudiosos fundamentales que han tratado esta cuestión a nivel internacional, se defenderá que expresiones como la cine-danza, la video-danza o el screendance no suponen una ruptura o paradigma diferencial respecto a anteriores expresiones dancísticas relacionadas de forma exclusiva con el espacio teatral, sino que son, por el contrario, un desarrollo tecnológico de las mismas.
DETECTING ASSET PRICE BUBBLES DURING THE COVID-19 CRISIS AND ITS IMPLICATIONS: EVIDENCE FROM THE STOCK AND OIL MARKET
Authors: Azman Aziz Mukhriz Izraf , Azhari Adilah , Mobin M Ashraful
Published: June 2022

This study investigates whether the COVID-19 pandemic has caused asset price bubbles in the stock and oil markets in the United States and Malaysia. More specifically, the study seeks to detect the onset and end of possible speculative bubbles and their causes in these markets. It also examines the existence of a contagion effect between the stock and oil markets during the Covid-19 pandemic. To achieve these objectives, the study used the Generalized SADF (GSADF) developed by Phillips et al. (2015) in order to check for existence of bubbles within the time frame from January 1, 2020, to April 24,2020. This technique allows one to look for the occurrence of multiple bubbles during the sample period with great precision. The findings showed that five out of the six equities, including the oil price indices had multiple bubbles. Evidence was also obtained which linked the explosive activity episodes between the crude oil market and the US stock markets from the start and end point of each bubble event. These findings add not only to the literature on the existence of bubbles in the financial and energy markets during the initial outbreak of COVID-19, but also to the significance of the negative impact of pandemics on bubble contagion effects under extreme market conditions.
Reprodutibilidade teste-reteste da tarefa de levantar-se do solo em idosos
Authors: Maciel Marina Ramos , Souza Bárbara Laís Fernandes , Mota Camila de Santana , Queiroz Robson Felipe de , Assis Matheus Rodrigues de , Safons Marisete Peralta , Cattuzzo Maria Teresa , Santana Frederico Santos de
Published: June 2022

Determinar o nível da reprodutibilidade da análise da tarefa de levantar-se do solo segundo o protocolo de Haywood et al. Vinte voluntários (idosos saudáveis 72,87 ± 6,51 anos; IMC = 26,8 ± 4,66 kg/m2; estatura 1,6 ± 0,09 m) foram selecionados e executaram os seguintes testes: Timed Up and Go, Apoio Unipodal e dinamometria de preensão manual, além da tarefa de levantar-se do solo (STS) a partir da posição de decúbito dorsal. Foram realizadas duas tentativas com intervalo entre sete e 15 dias, filmadas e analisadas pelo software Kinovea®. Por fim, a reprodutibilidade teste-reteste do desempenho de processo da tarefa de levantar-se do solo foi avaliado por meio do Coeficiente Kappa, com nível de significância adotado p ≤ 0,05. Os resultados mostraram uma reprodutibilidade para membros superiores de K = 0,481, região axial de K = 0,519 e membros inferiores de K = 0,851, respectivamente, todos com p < 0,001. Portanto, conclui-se que a reprodutibilidade da análise de processo da tarefa de levantar-se do solo em idosos, segundo Haywood et al., foi considerada moderada, de modo geral.
La Medina de Tetuán: 25 aniversario de su inscripción en la Lista del Patrimonio Mundial
Authors: López López Juan de Dios , Jordano Barbudo María Ángeles , Idelhadj Abdelouahab
Published: June 2022

La Medina de Tetuán (Marruecos) fue inscrita en la Lista del Patrimonio Mundial en 1997. Veinticinco años después de este hito, la Medina mantiene los valores que la hicieron valedora de dicho reconocimiento, al tiempo que es objeto de varios proyectos de rehabilitación y se encuentra inmersa en una intensa vida social afectada por debates patrimoniales.
Therapeutics for the treatment of coronavirus disease 2019 in children and adolescents
Authors: Choi Soo-Han , Choi Jae Hong , Yun Ki Wook
Published: June 2022

Coronavirus disease 2019 (COVID-19) is a mild to moderate respiratory illness in most children and adolescents, but a small proportion develop severe or critical illness. Although pediatric clinical trials for the treatment of COVID-19 are sparse, there are some available drugs for children and adolescents with severe COVID-19. This review summarizes clinical data focusing on antiviral agents and immunomodulators for COVID-19 treatment. Additionally, the current recommendations for therapeutics for children and adolescents with COVID-19 are discussed. Remdesivir is suggested for pediatric patients with COVID-19 in the following cases: children and adolescents with severe COVID-19 who need supplemental oxygen without mechanical ventilation; adolescents aged ≥12 years and weight of at least 40 kg with COVID-19 who do not require supplemental oxygen and are within 7 days of symptom onset and are at high risk of progression to severe illness. Nirmatrelvir/ritonavir is considered for adolescents aged ≥12 years and weighing at least 40 kg who do not require supplemental oxygen and are within 5 days of symptom onset and are at high risk of progression to severe disease. Corticosteroids are not recommended in children and adolescents with mild to moderate COVID-19. Corticosteroids are recommended in children and adolescents with severe to critical COVID-19.
Using molecular and stable isotope markers to identify the main predators of Nephrops norvegicus in Mediterranean deep-water ecosystems
Authors: Vigo M , Navarro J , Giménez J , Andón N , Martínez-Lage A , Company JB , Rotllant G
Published: June 2022

To obtain a better understanding of the functioning of ecosystems and how they respond to disturbance, it is necessary to identify the relevant biotic interactions and specific trophic roles. Predation is one of the most important biotic interactions that can also define the spatial patterns of other species. Many predators are considered key species for the functioning and maintenance of ecosystems, as they play an important ecological role that can influence the dynamics at lower trophic levels. The Norway lobster Nephrops norvegicus is one of the most valued European fishing stocks. However, its value and capture have declined over the last decade. In the Atlantic Ocean, Atlantic cod Gadus morhua is the main predator of N. norvegicus. However, this species is not present in the Mediterranean Sea, and little is known about which species might prey on N. norvegicus in this area. Here, we combine 2 methodologies—genetic identification of stomach contents and stable isotope analyses—to identify, for the first time, the main predators of N. norvegicus in the Mediterranean Sea. Moreover, we have created the Predation Index, which determines the most influential predator affecting N. norvegicus population dynamics. Our results reveal that the major predators are the cephalopods Sepietta spp. and Abralia veranyi, which probably affect the early stages of N. norvegicus, followed by the elasmobranch Scyliorhinus canicula and the bony fishes Merluccius merluccius, Trigla lyra, and Conger conger. To evaluate possible fluctuations in the N. norvegicus population, we consider the assessment of these predator populations crucial.
Echinoid larvae can express food-conditioned morphological plasticity at ecologically relevant culture densities
Authors: Nilsson P , Pernet B
Published: June 2022

The feeding larvae of many echinoids develop long postoral arms relative to body length when food is sparse but relatively short postoral arms when food is abundant, a response thought to adaptively adjust feeding capability. However, in an important recent study, larvae of Dendraster excentricus exhibited this food-conditioned plasticity only when reared at a high density typical of laboratory cultures; when reared at a lower density more representative of larval densities in nature, they did not exhibit this plastic response. This finding suggests that laboratory results cannot be easily extended to make inferences about phenotypic plasticity in nature. We replicated this study and extended it to an even lower larval culture density and to a second species, Lytechinus pictus. Larvae of D. excentricus developed longer arms adjusted for body length when fed the lower of 2 food rations at all culture densities, though differences were only marginally significant at the lower culture density in one experiment. Larvae of L. pictus tended to develop longer arms adjusted for body length at lower food rations, though differences only approached statistical significance at the highest culture density in one experiment. For both species, contrasts between food rations almost always showed an inverse relationship between postoral arm length and stomach length, consistent with prior work demonstrating trade-offs in investment in these 2 features characteristic of phenotypic plasticity. These results suggest that the feeding larvae of echinoids may exhibit food-conditioned plasticity of postoral arm length even at low natural densities.
Macrophage-Derived Small Extracellular Vesicles in Multiple Diseases: Biogenesis, Function, and Therapeutic Applications
Authors: Ye Jingyao , Liu Xuehong
Published: June 2022

Macrophages (Mφs), as immune cells, play a pivotal role against pathogens and many diseases, such as cancer, inflammation, cardiovascular diseases, orthopedic diseases, and metabolic disorders. In recent years, an increasing number of studies have shown that small extracellular vesicles (sEVs) derived from Mφs (M-sEVs) play important roles in these diseases, suggesting that Mφs carry out their physiological functions through sEVs. This paper reviews the mechanisms underlying M-sEVs production via different forms of polarization and their biological functions in multiple diseases. In addition, the prospects of M-sEVs in disease diagnosis and treatment are described.
RETRACTED: Electrospun Ta-MOF/PEBA Nanohybrids and Their CH4 Adsorption Application
Authors: Jasim Saade Abdalkareem , Hadi Jihad M. , Jalil Abduladheem Turki , Catalan Opulencia Maria Jade , Hammid Ali Thaeer , Tohidimoghadam Mohadeseh , Moghaddam-manesh Mohammadreza
Published: June 2022

For the first time, biocompatible and biodegradable Ta-metal organic framework (MOF)/polyether block amide (PEBA) fibrous polymeric nanostructures were synthesized by ultrasonic and electrospinning routes in this study. The XRD peaks of products were wider, which is due to the significant effect of the ultrasonic and electrospinning methods on the final product. The adsorption/desorption behavior of the nanostructures is similar to that of the third type of isotherm series, which showed mesoporous behavior for the products. The sample has uniform morphology without any evidence of agglomeration. Since the adsorption and trapping of gaseous pollutants are very important, the application of the final Ta-MOF/PEBA fibrous polymeric nanostructures was investigated for CH4 adsorption. In order to achieve the optimal conditions of experiments and also systematic studies of the parameters, fractional factorial design was used. The results showed that by selecting temperature 40°C, time duration 35 min, and pressure 3 bar, the CH4 gas adsorption rate was near 4 mmol/g. Ultrasonic and electrospinning routes as well as immobilization of Ta-MOF in the PEBA fibrous network affect the performance of the final products for CH4 gas adsorption.