bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALYSIS OF THE IMPACT OF TASK DIFFICULTY ON THE OPERATORʾS WORKLOAD LEVEL
Authors: Galant-Gołębiewska Marta , Mika Barbara , Maciejewska Marta
Published: May 2022

The widely held thesis is that the profession of pilot is one of the most difficult jobs to do. The task of the article was to analyse whether and how the difficulty of the performed task affects the pilot’s workload during the flight. The research was carried out using a flight simulator. During the simulator tests, the cognitive load measurements represented by the change in pilot pulse and concentration were used. A finger pulse oximeter was used for the first purpose. The second device was Mindwave Mobile which allows to measure level of pilot’s concentration and relaxation. The NASA-TLX questionnaire is used as a subjective method of operator’s workload assessment. The examined person assesses the level of his/her load, using six dimensions: mental demand, physical demand, temporal demand, performance, effort, and frustration level. Five research hypotheses were put forward and verified by the Friedman test. It has been shown that the level of difficulty of individual stages of the study is appropriately differentiated by pulse, concentration, relaxation, and subjective assessment of the respondents’ workload. It has been proved that pulse measurement, concentration, and relaxation levels, as well as subjective assessment of load levels, can be successfully used to assess the psychophysical condition of the operator.
An Enhanced Evolutionary Based Feature Selection Approach Using Grey Wolf Optimizer for the Classification of High-dimensional Biological Data
Authors: Thaher Thaer , Awad Mohammed , Aldasht Mohammed , Sheta Alaa , Turabieh Hamza , Chantar Hamouda
Published: May 2022

Feature selection (FS) is a pre-processing step that aims to eliminate the redundant and less-informative features to enhance the performance of data mining techniques. It is also considered as one of the key success factors for classification problems in high-dimensional datasets. This paper proposes an efficient wrapper feature selection method based on Grey Wolf Optimizer (GWO). GWO is a recent metaheuristic algorithm that has been widely employed to solve diverse optimization problems. However, GWO mainly follows the search directions toward the leading wolves, making it prone to fall into local optima, especially when dealing with high-dimensional problems, which is the case when dealing with many biological datasets. An enhanced variation of GWO called EGWO, which adapts two enhancements, is introduced to overcome this specific shortcoming. In the first place, the transition parameter concept is incorporated to move GWO from the exploration phase to the exploitation phase. Several adaptive non-linear decreasing formulas are introduced to control the transition parameters. In the second place, a random-based search strategy is exploited to empower diversity during the search process. Two binarization schemes using S-shaped and V-shaped transfer functions are incorporated to map the continuous search space into a binary one for FS. The efficiency of the proposed EGWO is validated on ten high-dimensional low-samples biological data. Our experiments show the promising performance of EGWO compared to the original GWO approach and other state-of-the-art techniques in terms of dimensionality reduction and the enhancement of classification performance.
The contradictions of Green New Deals: green sacrifice and colonialism
Authors: Zografos Christos
Published: May 2022

The focus in mainstream Northern versions of Green New Deals (GNDs) or Just Transitions is on ameliorating the implications of low-carbon transition upon communities within Northern economies - not upon the communities, most often in the global South, that will be adversely affected
by the solutions that are being proposed, for example those based on mining for transition minerals, constructing damns for hydro-electricity or projects for the large-scale harnessing of solar power. Yet adverse impacts on the environment are expected to occur across the whole chain of provision
of the resources required by GNDs: the transportation of materials, assemblage of green production infrastructure, siting of facilities to produce energy, and dealing with waste at the end-of-life of green infrastructure. The areas involved in this chain are becoming Green Sacrifice Zones.
Assumptions about race and social difference provide the underpinning for a tendency to downplay or render invisible consequences for local communities. Furthermore, the extraction of resources often involves contemporary colonial practices, including land encroachment and highly exploitative
labour relations. Resource-seeking multinational companies present themselves as offering the benefits of modernity to people living in green sacrifice zones - in the form of 'employment opportunities' and 'economic development'. Some of the more peripheral or 'disadvantaged' areas within
Europe are also at risk from transition resource extractivism. To go beyond this mindset, there is a need to start listening to what frontline and vulnerable communities themselves say when they speak about just transition and GNDs: this will involve challenging leadership assumptions about
which people and what frameworks should guide a just decarbonisation.
Entanglements: the IHRA, Jews and non- White minorities
Authors: Behar Moshe
Published: May 2022

The IHRA Working Definition of Antisemitism - whether intentionally or not - has had the effect of separating antisemitism from other forms of racism. Of the eleven illustrations that the IHRA definition marshals to exemplify antisemitism, seven relate to post-1948 Israel. As a result,
the Zionist/Arab matrix dominates the definition, and the examples come across as concerned more with the protection of Israel than the protection of Jews, let alone non-Israeli Jews. The right's campaign for its imposition as the sole acceptable definition, together with its focus on antisemitism
to the exclusion of other forms of racism, has significantly undermined potential solidarities with other minority groups. In an expansion of the instrumentalisation of accusations of antisemitism for right-wing conservative ends, since October 2020 there has been a campaign by the UK government
to demand that University Vice Chancellors in England formally adopt the definition. The aim of this article is to offer an explicitly non-white Jewish perspective on the post-2015 trajectory that underpins the drive for universities to adopt the IHRA definition. This involves, first, a discussion
of some of the wider arguments about antisemitism, including the problems of the IHRA definition and its use by the Israeli government and its allies as a means of silencing critics; and, second, an exploration of the ways in which the Tory focus on antisemitism, accompanied as it is by downplaying
other forms of racism, is so unhelpful for Jews labouring to cement common ground with other minority groups.
Vingt bougies déjà pour la théorie de l’effectuation : bilan, critiques et perspectives pour la prochaine décennie
Authors: Jacquemin Amélie , Carré Nathalie , Silberzahn Philippe , Vian Dominique
Published: May 2022

Dans cet entretien, Philippe Silberzahn et Dominique Vian, experts et praticiens de l’effectuation, dressent les contours de cette théorie : différences en termes d’approches et d’épistémologie entre effectuation et causation, mais aussi complémentarités et combinaisons de ces approches ; lignes de démarcation avec le bricolage, l’improvisation ou encore le Lean Startup. La place de l’effectuation dans l’apprentissage de l’entrepreneuriat est également abordée, de même que l’utilité, la portée des principes de l’effectuation de façon plus générale pour créer de la nouveauté ( Novelty Creation ). Philippe et Dominique reviennent enfin sur les critiques dont a fait l’objet cette théorie, évaluent leur pertinence et identifient des éléments qui mériteraient davantage d’investigations.
Retour réflexif sur l’usage des outils par des accompagnateurs expérimentés
Authors: Papastratis Yann , Girbau-Grimoin Marie-Hélène , Renard Corinne , Raveneaux Claire
Published: May 2022

Corinne Renard, Directrice de la pépinière Eole du Grand Narbonne dans l’Aude, et Claire Raveneaux, responsable du pôle Entreprendre à la CCI du Gard, se sont prêtées au jeu de l’interview croisée sur leur pratique et leurs approches des outils d’accompagnement et de leurs évolutions. Elles ont été interrogées par Marie-Hélène Girbau-Grimoin et Yann Papastratis qui, pour le compte des CCI et CMA de la région Occitanie ont cofondé Pro’créa, le congrès national des acteurs de l’accompagnement entrepreneurial. Corinne Renard et Claire Raveneaux ont en commun, un grand professionnalisme, une longue expérience du métier d’accompagnant et la recherche permanente de la meilleure réponse aux attentes des porteurs de projets. Mais elles diffèrent dans leurs méthodes, liées aux contraintes de leurs organisations : traitement sur mesure pour un petit nombre de projets porteurs d’innovation en pépinière, et approche plus standardisée, du fait de l’important volume de créateurs reçus, en réseau consulaire. Très critiques vis-à-vis des outils qui deviennent le but au lieu de le servir, ou des supports imposés par des considérations étrangères aux besoins des créateurs, les deux praticiennes portent un regard distancié par rapport aux outils qu’elles utilisent et qui, finalement, ne sont que la matérialisation de leur process d’accompagnement.
L’entrepreneuriat étudiant : regards croisés sur les thèses primées en 2021
Authors: Fayolle Alain , Gabay-Mariani Laëtitia , Le Pontois Sandrine
Published: May 2022

Au cœur des préoccupations des pouvoirs publics, l’entrepreneuriat mobilise d’importantes ressources et l’éducation en entrepreneuriat est évaluée sur sa capacité à produire les effets attendus : création d’entreprises, d’emplois et développement de l’esprit d’entreprendre. Le caractère processuel de la démarche entrepreneuriale, ancrée dans un écosystème par nature dynamique, induit de nécessaires interactions entre les acteurs impliqués dans le projet. Leurs subjectivités influent sur leur rapport au projet entrepreneurial. Les deux thèses présentées dans ce ‘Regards croisés’ interrogent d’une part les formes que peut prendre l’engagement de l’entrepreneur naissant dans ce contexte spécifique de création et d’émergence et d’autre part l’évaluation nécessairement multidimensionnelle de l’impact des dispositifs d’éducation en entrepreneuriat. Ces travaux contribuent à alimenter la boîte à outils des accompagnateurs en prenant en compte le rôle des facteurs contextuels.
Spatiotemporal patterns induced by cross-diffusion on vegetation model
Authors: Xu Shuo , Zhang Chunrui
Published: May 2022

This paper considers the influence of cross-diffusion on semi-arid ecosystems based on simplified Hardenberg's reaction diffusion model. In the square region, we analyze the properties of this model and give the relaxation time correspond to the system to prejudge the approximate time of this system stabilization process. The numerical results are constant with the theory very well.
Novel operations of weighted hesitant fuzzy sets and their group decision making application
Authors: Zeng Wenyi , Ma Rong , Li Deqing , Yin Qian , Xu Zeshui , Khalil Ahmed Mostafa
Published: May 2022

Weighted hesitant fuzzy set (WHFS) is an extension of hesitant fuzzy set (HFS), in which the weights indicate that the decision maker has different confidence in giving every possible assessment of the membership degree. In this paper, we redefine the union and intersection operations of weighted hesitant fuzzy elements (WHFEs), investigate their operation properties, and propose the variance function of the weighted hesitant fuzzy element (WHFE) to compare WHFEs. Furthermore, we develop two aggregation operators such as weighted hesitant fuzzy ordered weighted averaging (WHFOWA) and weighted hesitant fuzzy ordered weighted geometric (WHFOWG) operators to aggregate weighted hesitant fuzzy information, and present multiple-attribute group decision making algorithm under weighted hesitant fuzzy environment. Finally, four numerical examples are used to illustrate the effectiveness of our proposed aggregation operators.
A scoping review on monitoring mental health using smart wearable devices
Authors: Long Nannan , Lei Yongxiang , Peng Lianhua , Xu Ping , Mao Ping
Published: May 2022

With the continuous development of the times, social competition is becoming increasingly fierce, people are facing enormous pressure and mental health problems have become common. Long-term and persistent mental health problems can lead to severe mental disorders and even death in individuals. The real-time and accurate prediction of individual mental health has become an effective method to prevent the occurrence of mental health disorders. In recent years, smart wearable devices have been widely used for monitoring mental health and have played an important role. This paper provides a comprehensive review of the application fields, application mechanisms, common signals, common techniques and results of smart wearable devices for the detection of mental health problems, aiming to achieve more efficient and accurate prediction for individual mental health, and to achieve early identification, early prevention and early intervention to provide a reference for improving the level of individual mental health.
An autonomous agent for negotiation with multiple communication channels using parametrized deep Q-network
Authors: Chen Siqi , Su Ran
Published: May 2022

Agent-based negotiation aims at automating the negotiation process on behalf of humans to save time and effort. While successful, the current research considers communication between negotiation agents through offer exchange. In addition to the simple manner, many real-world settings tend to involve linguistic channels with which negotiators can express intentions, ask questions, and discuss plans. The information bandwidth of traditional negotiation is therefore restricted and grounded in the action space. Against this background, a negotiation agent called MCAN (multiple channel automated negotiation) is described that models the negotiation with multiple communication channels problem as a Markov decision problem with a hybrid action space. The agent employs a novel deep reinforcement learning technique to generate an efficient strategy, which can interact with different opponents, i.e., other negotiation agents or human players. Specifically, the agent leverages parametrized deep Q-networks (P-DQNs) that provides solutions for a hybrid discrete-continuous action space, thereby learning a comprehensive negotiation strategy that integrates linguistic communication skills and bidding strategies. The extensive experimental results show that the MCAN agent outperforms other agents as well as human players in terms of averaged utility. A high human perception evaluation is also reported based on a user study. Moreover, a comparative experiment shows how the P-DQNs algorithm promotes the performance of the MCAN agent.
Restituire l’incalcolabile
Authors: Todeschini Giacomo
Published: May 2022

La restituzione del «buon nome» perduto in conseguenza di una calunnia o di maldicenze diffuse all’interno di una comunità, ossia la reintegrazione di una reputazione sottratta con la diffamazione (una sottrazione paragonata, alla fine del Medioevo, al furto di una ricchezza invisibile) costituisce l’oggetto di molti ragionamenti e disquisizioni degli Scolastici fra tredicesimo e quindicesimo secolo. La difficoltà di rendere questo tipo di “bene” invisibile eppure fondamentale per la definizione dell’appartenenza civica indusse infatti giuristi e teologi a riflettere sistematicamente sulle conseguenze impreviste, politiche così come economiche, delle restituzioni dei beni acquisiti a torto e sugli effetti talvolta contraddittori di queste restituzioni.
Le confessioni relative a usure e male ablata
Authors: Claudio Pia Ezio
Published: May 2022

Centrale, per comprendere l’azione della Chiesa nelle dinamiche creditizie, risulta il suo intervento valutativo su usure e male ablata, in seguito alle confessioni dei prestatori o a procedimenti giudiziari. Un quadro dal quale emerge la valenza sia politica sia economica del concetto di usura, che consente di valutare appunto i rapporti creditizi e di stabilire criteri di reinserimento per gli operatori “pentiti” mediante la restituzione che ridefinisce l’incerto discrimine tra inclusione ed esclusione sociale. Una categoria pervasiva, l’usura, che può anche essere usata strumentalmente come contenitore formale nel quale collocare relazioni conflittuali, al fine di trasferire alla Chiesa sia la gestione di controversie di natura patrimoniale sia il fittizio controllo su risorse finanziarie e immobiliari esposte al rischio di ritorsioni a causa dei conflitti tra le Partes.
Pro male ablatis et pro incertis
Authors: Esposito Anna
Published: May 2022

Da un ampio dossier di fonti (testamenti, codicilli, donazioni mortis causa, etc.) relativi all’area romana, si è potuto evidenziare una tendenza non omogenea per quanto riguarda i lasciti di restituzione, nonostante la grande diffusione delle pratiche creditizie spesso usuraie, tra ‘300 e inizio ‘500. Nella documentazione trecentesca i lasciti per i male ablata sono attestati seppure non frequentemente, sostanzialmente generici (non sono mai espressi i nomi delle persone beneficiarie), di scarsa entità, mentre più significativi sono quelli legati a casi concreti, come le piccole truffe e ogni tipo di esazione indebita. Ma nel pieno e tardo ‘400 la formula della restituzione del maltolto tende a scomparire del tutto dagli atti di ultima volontà con solo poche eccezioni e per lasciti pro exoneratione conscientie, mentre aumentano i lasciti di carità a sfondo sociale, come la fondazione di ospedali e domus pauperum, la dotazione di ragazze povere, etc.
I male ablata dei lombardi fra sanzione ecclesiastica e riconoscimento pubblico nei paesi Bassi
Authors: Bordone Renato
Published: May 2022

Il problema della restituzione dei male ablata nelle Fiandre e nei Paesi Bassi, dove assai diffusa era l’attività creditizia esercitata dai lombardi, mette in luce una ricorrente ambiguità nel comportamento delle autorità laiche o ecclesiastiche nei confronti dei prestatori che, di volta in volta, potevano essere condannati come usurai manifesti o considerati onesti mercanti ai quali legittimamente concedere l’esercizio del banco di pegno. A partire dalle decisioni del II Concilio di Lione (1274) e del successivo Concilio di Vienne (1311) – oltre che dei sinodi locali – la questione nodale era costituita appunto dalla definizione dello status di usuraio manifesto e dalle condizioni necessarie per ottenere sia la remissione della scomunica che da tale status derivava sia la successiva riammissione nella societas christiana.
Relações Familiares de Pessoas Idosas: baixa afetividade percebida e saúde
Authors: Silva Laila Lorena Nogueira Batista da , Rabelo Doris Firmino
Published: May 2022

Este estudo avaliou a associação da percepção de baixa afetividade nos relacionamentos familiares de pessoas idosas com a faixa etária, o sexo e as condições de saúde física e psicológica.  Participaram 134 idosos(as) do interior da Bahia e os dados foram coletados no domicílio utilizando-se: Questionário de Informações Sociodemográficas; Questionário de doenças e sinais e sintomas autorrelatados; Índice de independência nas ABVDs; Escala de desempenho nas AIVDs; Escala de Depressão Geriátrica; Inventário de Ansiedade de Beck; Familiograma. Foram feitos os testes Qui-quadrado ou Exato de Fisher e análise de regressão logística univariada e multivariada, com critério Stepwise de seleção de variáveis (p<0,05). Os resultados mostraram maior frequência de pessoas idosas com idade entre 60 a 74 anos e com dependência nas atividades básicas de vida diária com percepção de baixa afetividade. As pessoas idosas com maior risco de relatarem baixa afetividade foram: as com idade entre 60 e 74 anos (risco 14.0 vezes maior) e as com dependência nas atividades instrumentais de vida diária (risco 4.3 vezes maior). Este estudo mostrou que a faixa etária e a capacidade funcional se apresentaram como fatores de risco para a percepção de baixa afetividade, o que pode implicar na qualidade das relações familiares.
Estresse Parental e Relacionamento Conjugal em Pais de Crianças com Transtorno do Espectro Autista: uma revisão integrativa da literatura
Authors: Marques Machado Natália , Ribeiro Inácio da Silva Ákysa , Maciel Portes João Rodrigo
Published: May 2022

O objetivo desse estudo foi levantar a produção científica sobre estresse parental e relacionamento conjugal em pais de crianças com Transtorno do Espectro Autista (TEA). Produziu-se uma Revisão Integrativa da Literatura correspondente aos últimos dez anos (2010-2020). As bases de dados consultadas foram: BVS; CAPES; PePSIC; PubMed; SciELO. Utilizaram-se as seguintes combinações de palavras, em português e suas equivalentes em inglês: Autismo AND Estresse Parental AND Relacionamento Conjugal; Autismo AND Estresse Parental AND Relação Conjugal; Autismo AND Estresse Parental AND Relação Marital; Autismo AND Estresse Parental AND Conjugalidade. Trinta e nove artigos adequaram-se aos critérios de inclusão. Constatou-se uma prevalência de estudos transversais, quantitativos, explicativos e da abordagem sistêmica. Como fatores de risco à saúde do casal, cita-se a sobrecarga de cuidados, o isolamento e a situação socioeconômica. Os fatores de proteção, por sua vez, aparecem associados ao diálogo, a união, a divisão de tarefas, ao amparo do parceiro e as redes de apoio, além de intervenções de caráter informacional e/ou terapêutico. Essa pesquisa apresenta-se como um norteador para futuras produções científicas e ainda, demonstra-se como um meio instrutivo para a implementação de intervenções para esse público que levem em consideração o caráter bidirecional das relações familiares.
An Early Childhood Introduction to Robotics as a Means to Motivate Girls to Stay With STEM Disciplines
Authors: Korompili Anastasia , Karpouzis Kostas
Published: May 2022

This research examines the design, implementation, and impact of an educational robotics intervention for first and second grade students. It controls for gender-related performance differences and compares the interest shown towards robotics. The authors also examine if factors such as students' stance towards different professions can contribute to a difference in performance. In the course of its work, custom designed worksheets for the UARO educational robotics product were used, as well as questionnaires given to students after meetings. The results showed that all genders responded equally well and with the same enthusiasm to the robotics activities and understood concepts of physics, mechanics, and mathematics through them. Participants differ in how they use their leisure time and in their professional orientation; however, this didn't affect their performance in the robotics activities. These results highlight the need for further examination of the social institutions and factors that influence the formation of gender orientations during the early childhood age.
Control Technologies as Mind-Tools
Authors: Kourias Spyros
Published: May 2022

In mathematics education, especially in early childhood that is considered the most formative period in children's lives, there is an always growing need to design, test, and validate tools and activities that take advantage of recent pedagogical and technological advancements but still focus on the creative learning process, instead of quantifying the outcomes and emphasizing numerical data and performance. Educational robotics as a context for interdisciplinary problem-solving scenarios in preschool education can be an interesting starting point, since modern control technologies are usually thought to provide a rich variety of mind-tools that encourage active learning and children's creative thinking. Such activities may stimulate students to “do” mathematics in a seamless, creative, playful way in order to solve meaningful and appealing (for them) problems. The study tries to explore and validate emerging preschoolers' opportunities to unconsciously “mathematize” their environment in everyday playful robotics activities in the context of brief teaching experiments.
Designing a Set of Web-Based Simulations to Facilitate STEAM Activities on How to Travel From Earth to Mars
Authors: Sitsanlis Ilias , Polatoglou Hariton M.
Published: May 2022

In this chapter, the authors analyze a subject that is suitable for STEAM education and design a set of web-based simulations and material for blended learning to support STEAM activities on how to travel from Earth to Mars. Interplanetary travel involves astronomy, biology, and physics for science; technology to make it possible; engineering to optimize a possible solution; art to produce artwork based on the orbits of planets and boost creativity; and mathematics to solve the differential equations, obtain data, and perform data analysis to reach conclusions. Based on the ADDIE model, the presently related and available simulations were analyzed and based on that analysis a set of streamlined simulations are proposed, designed, developed, implemented, and evaluated. Similarly, a didactic sequence was implemented. The evaluation of the didactic sequence and the streamlined simulations by expert educators testifies that the proposed method to create STEAM inquiry and simulation-based activities is productive and can be used with a variety of interesting STEAM integration subjects.
Web Bot Detection System Based on Divisive Clustering and K-Nearest Neighbor Using Biostatistics Features Set
Authors: Rahman Rizwan Ur , Tomar Deepak Singh
Published: May 2022

Web bots are destructive programs that automatically fill the web form and steal the data from web sites. According to numerous web bot traffic reports, web bots traffic comprises of more than fifty percent of the total web traffic. An effective guard against the stealing of the data from web sites and automated web form is to identify and confirm the human user presence on web sites. In this paper, an efficient k-Nearest Neighbor algorithm using hierarchical clustering for web bot detection is proposed. Proposed technique exploits a novel taxonomy of web bot features known as Biostatistics Features. Numerous attack scenarios for web bot attacks such as automatic account registration, automatic form filling, bulk message posting, and web scrapping are created to imitate the zero-day web bot attacks. The proposed technique is evaluated with number of experiments using standard evaluation parameters. The experimental result analysis demonstrates that the proposed technique is extremely efficient in differentiating human users from web bots.
Some Helpful Features of the Tig Welding Process Using High Frequency Pulsed Arc
Authors: Voicu-Ioan Safta , Mnerie Gabriela-Victoria , Nagy Vasile , Dumitru Mnerie
Published: May 2022

Many of the features and advantages of TIG welding are well known. The paper presents in part the results of some experimental research using TIG welding with high frequency pulsed arc. A comparative study was performed between the application of TIG welding with high frequency pulsed arc technology and classical TIG welding, applied to achieve welded joints of stainless-steel parts. The conclusions are based both on the characteristics of the welding process (the hole main group of parameters) and the results of the applied non-destructive and destructive testing methods. Features like reduced deformations in the joint, low energy guaranteed ignition, wonderful focalization of the high current density arc, increased working speed and not the last, the special look of the welded plates recommends this procedure for some replacement possibilities for the expensive laser welding process. Aspects of improving the quality of welded joints are highlighted, given the low manufacturing costs.
Comparison of Two Numerical Models for Friction Stir Welding
Authors: Draganov Ivo , Ferdinandov Nikolay
Published: May 2022

In this paper, two numerical models of friction stir welding of two aluminum plates are considered. The coupled mechanical-temperature problem is solved with explicit integration over the time. The two models are based on the finite elements method (FEM) and have different complexity and number of participating parameters. The aim of the development is to highlight the weaknesses and strengths of the models of different complexity. The first model is simpler and it is based on the free penetration of the tool into the parts. The second model is based on the arbitrary Lagrange-Euler method and take in to the account the instrument penetration that allows to take into account the movement of the material in the process area. Convective and radiative heat transfers are accounted in the two models. The results for the temperature, stress and strain in the welded joint are studied and compared. The calculation time is given for each model. A parametric analysis was performed for the influence of the rotational speed of the pin, welding velocity and the pressing force. The influence of the temperature dependent physical properties of the welded plates is determined and compared for the both finite element models.
A Descriptive Analysis of Patient Outcomes and Experiences at a Student-Run Athletic Training Clinic
Authors: Curran Camas , Baker Jayme G. , Smitley Matthew , Baker Russell T.
Published: May 2022

Context

The prevalence of student-run clinics is rising due to educational benefits and the ability to provide cost-effective care to underserved patients. Current literature on the effect of athletic training student-run clinics on patient outcomes and experiences is limited.

Objective

To explore patient-reported outcomes (PROs), patient experiences, and patient demographics in an athletic training student-run clinic.

Design

Mixed-methods study: cross-sectional survey with retrospective analysis of deidentified patient outcomes from November 2017–October 2021.

Setting

Athletic training student-run clinic.

Patients or Other Participants

A total of 388 patients from the university (ie, students and staff) and local community with a variety of musculoskeletal injuries.

Main Outcome Measure(s)

Participants completed a packet to provide their responses to demographic items and PRO scales: Disablement in the Physically Active Scale Short Form-8, Numeric Pain Rating Scale, Patient-Specific Functional Scale, and Global Rating of Change Scale at 3 time points. They also completed an electronic patient experience survey after their final visit to the student-run clinic.

Results

Most participants reported clinically significant improvements across all PRO scales: an average improvement of 39.1% in pain, 39.3% in function, and 43.1% in quality of life in <11 days, on average. Furthermore, they described a high level of satisfaction with care and a globally positive experience at the student-run clinic.

Conclusions

Patients experienced clinically significant improvements in pain, function, disablement, and quality of life when receiving care from athletic training students at a student-run clinic. In addition, they indicated a high level of satisfaction with the care provided and a positive overall experience with an athletic training student-run clinic.
Return-to-Competition Progression After Exertional Heat Stroke in an Adolescent Runner: A Case Report
Authors: Rivera-Brown Anita M. , Correa José J. , Micheo William F.
Published: May 2022

A 14-year-old runner indigenous to the tropics collapsed during his first 10-km race in a hot and humid climate. Dizziness, stumbling, and loss of consciousness were symptoms of exertional heat stroke. Two days postcollapse, blood tests revealed elevated hepatic transaminases consistent with hepatic injury. We discuss the return-to-competition progression, which included a gradual increase in exercise duration, initially in a cool and then in a tropical climate, and 2 field-based (wet-bulb globe temperature > 29.0°C) running evaluations that simulated the environmental conditions and training intensity the athlete would encounter in his sport. The thermoregulatory results guided the training progression, his tolerance to running in the heat improved, blood values normalized, and he was cleared to compete in a tropical climate. This exploration case report presents a novel field-based protocol that replicates the physiological demands of training in the tropics to evaluate thermoregulatory responses during exercise-heat stress in young runners after exertional heat stroke to facilitate a safe return to competition.
‘Rooting,’ For Change
Authors: Bocci Paolo
Published: May 2022

Confronted with concerns about rising biodiversity loss and pollution, conservation on the Galápagos has recently moved away from the goal of preserving pristine ecosystems to managing a complex socio-ecological system (SES). While acknowledging the positive aspects of this model, this article shows that the conceptualisation of “the human factor” in resilient SESs often limits local participation to compliance to existing plans of conservation. In so doing, I argue that participation under resilience ignores the potential that a more nuanced understanding of humans’ relation to non-human nature poses for rethinking conservation as a whole. Drawing on ethnographic research, I discuss how local farmers affirm arraigo (a culture of belonging), in contrast to the imaginary of inhospitable islands that can only be visited—either for tourism or scientific research. By showing farmers’ active role in the highlands, this article expands on the potential for ‘convivial conservation’ to reframe the traditional (and limiting) framework for local participation in conservation. This role offers important lessons about transitioning conservation away from a northern, protectionist agenda towards one that is driven by social justice and local agenda.
Robotic real-time vessel navigation using indocyanine green fluorescence for lymph node dissection along the left gastroepiploic vessels during robotic distal gastrectomy - First experience
Authors: Ebihara Yuma , Kurashima Yo , Murakami Soichi , Shichinohe Toshiaki , Hirano Satoshi
Published: May 2022

Splenic infarction (SI) following gastrectomy is common; severe complications related to SI, such as splenic haemorrhage, abscess formation or rupture, can be fatal. To overcome these problems, we performed real-time vessel navigation using indocyanine green (ICG) fluorescence during robotic distal gastrectomy (RDG). The aim of study is to report the efficacy of robotic real-time vessel navigation for lymph node dissection (LND) along left gastroepiploic vessels (LGEVs). We treated seven patients with gastric cancer who underwent LND along the LGEVs using robotic real-time vessel navigation during RDG at our institution from January 2021 to July 2021. There were no complications (Clavien–Dindo classification II). There were no cases of post-operative SI or spleen-related complications. Robotic real-time vessel navigation using ICG for LND along LGEVs during RDG could help to reduce post-operative spleen-related complications associated with RDG.
Efficacy of near-infrared fluorescence cholangiography using indocyanine green in laparoscopic cholecystectomy: A retrospective study
Authors: Patankar Roy , Mishra R. K. , Bindal Vivek , Kothari C. P. , Rahate Prashant , Patnaik Sreejoy , Kankaria Jeevan , Nayak Samir Ranjan
Published: May 2022

Context:

While laparoscopy has been the standard procedure for gallstone treatment, recent advances including the use of indocyanine green (ICG) in laparoscopic cholecystectomy have made it easier to understand the biliary tree and reduce the risk of bile duct injury.

Aims:

In this retrospective study, we aim to determine the efficacy of ICG in near-infrared fluorescence cholangiography (NIRFC) for visualising biliary anatomy.

Settings and Design:

A total of 90 patients with the symptoms of cholelithiasis were enrolled for this retrospective study.

Subjects and Methods:

All the patients underwent cholecystectomy approximately 53.8 min (40–90 min) after the intravenous administration of mean volume 1.6 ml (1–2 ml) ICG. The surgeons used NIRFC along with ICG for real-time visualisation of biliary anatomy.

Results:

The mean operative time for the surgery was 65.7 min (25-120 min) with no post-surgical complications observed in the patients. The average length of stay was 2 days (1–3 days). ICG usage with NIRFC enabled identification of cystic duct, common hepatic and common bile duct, the junction between common hepatic and bile duct, right and left hepatic duct in 87.7%, 94.4%, 80% and 14.4% of cases, respectively.

Conclusions:

ICG fluorescence allowed successful visualisation of at least 1 biliary structure in 100% of cases.
Functional and Radiological Outcome of Total Knee Replacement in Osteoarthritis with Varus Deformity
Authors: Jose R. Sahaya , Kannan Visnu
Published: May 2022

Aims:

The aim of the study is to evaluate the functional and radiological outcome of total knee replacement for osteoarthritis knee with varus deformity, using medial parapatellar approach and posterior stabilized (PS) design.

Settings and Design:

This is a prospective observational study and nonprobability sampling technique.

Materials and Methods:

In this prospective study, 20 patients with osteoarthritis knee of Grades III and IV were selected according to Kellgren-Lawrence Grading system. In this study, we assess the functional outcome of total knee replacement using Knee Society Score and radiological outcome using radiographic alignment. The patients were regularly followed up for both functional and radiological outcome at 1st, 3rd, 6th, 12th, and 18 months and then yearly.

Statistical Analysis Used:

The collected data were analyzed by SPSS 20.00 using the Chi-square test.

Results:

Preoperatively, our overall mean Knee Clinical and Knee Functional Score was 30.9 and 36.45 which improved to 87.7 and 84 postoperatively with the significant P < 0.001. Our study shows that we have 80% of excellent and 15% good results following total knee replacement. Radiologically all patients have a near-normal radiographic alignment which in turn improves the functional outcome of the patients.

Conclusion:

Total knee replacement using nonconstrained, PS design and medial parapatellar approach gives functionally excellent pain relief, increased range of motion, restoration of normal function, low prevalence of patellofemoral complications, correction of varus and fixed flexion deformities, and restoration of normal mechanical alignment. Postoperatively, patients with near-normal radiographic alignment like femorotibial angle, posterior condylar offset, and posterior tibial slope have good functional outcome and faster rehabilitation. Correct positioning of the components axially and rotationally improve both the functional and radiological outcome. However, longer follow-up is needed to determine the long-term effect of Posterior Substitute Design.
A Study of 40 Patients of Chondroblastoma of Extremities Treated with Curettage and Reconstruction with Bone Graft or Bone Graft Substitute or Bone Cement
Authors: Amin Prakash , Pandit Jyotindra , Menon Prem , Salunke Abhijeet Ashok , Pathak Subodh
Published: May 2022

Introduction:

The purpose of this study was to evaluate the outcomes of surgical management of chondroblastoma in appendicular skeleton treated with curettage and reconstruction.

Materials and Methods:

This retrospective study included 40 patients of chondroblastoma treated with intralesional curettage and filling of defect with bone graft or bone graft substitute or bone cement. The patients were prospectively followed to consolidation of bone graft or bone graft substitute. The mean age of presentation was 14 years (13–32 years). There were 24 were male and 16 were female patients. The mean follow-up was 11 years (4–17 years).

Results:

The location of chondroblastoma was proximal tibia in 12 patients, distal femur in 14 patients, proximal femur in 8 patients, and proximal humerus in six patients. The physis was found open (8), closing (12), and closed (20) patients. The tumour was of Enneking grade of tumour was 1 in 22, II in 14 and III in 4 patients. The mean union time in bone graft group and bone graft substitute group 3 months and 4 months, respectively. There was local recurrence in six patients (3 in bone graft group and 2 in bone graft substitute group, 1 in bone cement group). The other complications were surgical site infection (two cases). The mean Musculoskeletal Tumor Society score in both groups was 27.

Conclusion:

Intralesional curettage provides excellent functional outcomes with preservation of adjacent joint mobility. The methods of reconstruction with bone graft, bone graft substitute, and bone cement provide optimal results, and the outcomes were comparable in all these groups.
Results of Proximal Femoral Nailing in Subtrochanteric Fracture of Femur in Adults
Authors: Patel Ishani , Amin Tarkik K. , Kachhad Kishor H. , Patel Kishan M. , Senta Ajay , Modi Dhaval R. , Kodiyatar Amit K.
Published: May 2022

Introduction:

Subtrochanteric fractures occur in a zone extending from the lesser trochanter to 5 cm distal to the lesser trochanter, however, extension into the intertrochanteric region is common. The deforming forces on both the proximal and distal segments are difficult to control due to peculiar muscle insertion to the proximal and distal fragments. This study aims to assess the effectiveness of Proximal Femoral Nailing (PFN) for the treatment of subtrochanteric fractures of femur.

Materials and Methods:

This is a prospective study of evaluation of results of 32 patients who sustained subtrochanteric femur fracture treated with PFN at our institute from June 2018 to May 2020. All the patients in this study were above 18 years of age including both genders. All closed fractures and open Grade 1 and 2 fractures according to Gustilo–Anderson classification were included.

Results:

In this study of 32 patients, the mean age was around 3rd and 4th decade of life and Road traffic accidents was the major cause of injury (high-velocity trauma). The average radiological union time was 15.9 weeks. In 2 (6.24%) patients, there was postoperative infection and 3 (9.36%) patients had broken implant and 1 (3.12%) patient had nonunion. According to Harris hip score, 29 (90.6%) patients showed excellent-to-good results.

Conclusion:

PFN is a closed intramedullary nailing procedure which achieves biological fracture fixation with minimal blood loss, preserving the fracture hematoma and thus aiding in healing of the fractures. It provides good axial as well as rotational stability.
Операции клонирования и диаметр графа
Authors: Iordanskii Mikhail Anatol'evich
Published: May 2022

Изучается влияние операций клонирования подграфов на диаметр графа. Оценивается возможное при этом увеличение диаметра. Формулируются условия сохранения диаметра графа при клонировании его подграфов. Приводится пример построения с помощью операций клонирования семейства «толстых» деревьев (fat-trees). Оцениваются диаметр и сложность синтеза этих графов.
Softer than soft: Diving into squishy granular matter
Authors: Barés Jonathan , Cárdenas-Barrantes Manuel , Cantor David , Renouf Mathieu , Azéma Émilien
Published: May 2022

Softer than soft, squishy granular matter is composed of grains capable of significantly changing their shape (typically a deformation larger than 10%) without tearing or breaking. Because of the difficulty to test these materials experimentally and numerically, such a family of discrete systems remains largely ignored in the granular matter physics field despite being commonly found in nature and industry. Either from a numerical, experimental, or analytical point of view, the study of highly deformable granular matter involves several challenges covering, for instance: (i) the need to include a large diversity of grain rheology, (ii) the need to consider large material deformations, and (iii) analysis of the effects of large body distortion on the global scale. In this article, we propose a thorough definition of these squishy granular systems and we summarize the upcoming challenges in their study.
XÁC ĐỊNH MOLYPDEN TRONG MẪU NƯỚC BẰNG PHƯƠNG PHÁP QUANG PHỔ UV-VIS SỬ DỤNG VẬT LIỆU Al2O3/TiO2 NANOCOMPOSIT KẾT HỢP VỚI KỸ THUẬT CHIẾT ĐIỂM ĐÁM MÂY
Authors: TRẦN THỊ THANH THÚY  , NGUYỄN VĂN TRỌNG  , TRƯƠNG THỊ UYÊN
Published: May 2022

Vật liệu Al2O3/TiO2 nanocomposit được tổng hợp và ứng dụng làm chất hấp phụ pha rắn để làm giàu Molypden trong mẫu nước. Molypden sau đó được xác định bằng phương pháp quang phổ UV-Vis kết hợp với kỹ thuật chiết điểm đám mây. Các điều kiện tối ưu của kỹ thuật chiết pha rắn như pH, khối lượng chất hấp phụ, thời gian hấp phụ, tốc độ khuấy và điều kiện giải hấp phụ được khảo sát. Molypden được xác định bằng phương pháp quang phổ dựa vào sự xúc tác của Molypden cho phản ứng oxy hóa khử giữa 1-amino-2- naphthol-4-sulfonic acid và H2O2. Dung dịch của phản ứng được chiết bằng kỹ thuật chiết điểm đám mây và đo quang tại bước sóng 465 nm. Các điều kiện chiết điểm đám mây như pH chiết, lượng Triton X-100, lượng muối NaCl, nhiệt độ chiết lần lượt được khảo sát. Kết quả với 4 mL Triton X-100 60%; 2,5 g muối NaCl; pH 5 tại nhiệt độ 400C thì hiệu suất chiết điểm đám mây là lớn nhất. Với các điều kiện chiết tối ưu, Molypden tuyến tính trong khoảng nồng độ 0,2–2,5 µg/L (r2 = 0,995) với giới hạn định lượng là 0,1676 µg/L. Độ lệch chuẩn trong 5 lần xác định là 3,37%. Phương pháp nghiên cứu được áp dụng để xác định Molypden trong các mẫu nước.
NGHIÊN CỨU LOẠI BỎ ION KIM LOẠI CHÌ TRONG NƯỚC BẰNG VẬT LIỆU BENTONITE VÀ NANO COMPOSITE BENTONITE TÍCH HỢP HYDROXYAPATITE KHUYẾT CANXI
Authors: TRẦN THỊ DIỆU THUẦN  , BÙI THỊ THU THỦY  , PHẠM HOÀNG ÁI LỆ
Published: May 2022

Trong nghiên cứu này, chúng tôi đã tổng hợp thành công vật liệu nano composite Bentonite tích hợp Hydroxyapatite khuyết Canxi (B/CDHAp) bằng phương pháp đồng kết tủa. Kết quả phổ tán sắc năng lượng (EDX) cho thấy vật liệu Hap sử dụng khuyết Canxi với tỷ lệ Ca/P = 1,53. Các đặc điểm cấu trúc của vật liệu (B, CDHAp, B/CDHAp) được xác định bằng phương pháp hóa lý hiện đại XRD, FTIR, TEM. Phân tích dữ liệu phổ hồng ngoại FTIR chỉ ra rằng, trong cấu trúc vật liệu B-CDHAp xuất hiện các đỉnh dao động của các nhóm chức PO43-, CO32-, OH- đặc trưng cho Hydroxyapatite (HAp) và các liên kết Si-O, Al-O đặc trưng cho Bentonite. Kết quả TEM và dữ liệu XRD cho thấy vật liệu tổng hợp được có kích thước nano ( 10 – 50 nm). Thực nghiệm hấp phụ ion chì trong dung dịch nước của vật liệu tổng hợp cũng được tiến hành. Độ hấp phụ chì tối đa của vật liệu Bentonite và B/CDHAp được tính theo mô hình hấp phụ đẳng nhiệt Langmuir có giá trị lần lượt là 55,71 mg.g-1 và 76,92 mg.g-1. Điều này cho phép kết luận rằng, vật liệu B/CDHAp hấp phụ tốt hơn vật liệu Bentonite.
KHẢ NĂNG NGĂN NGỪA VÀ CHỐNG VIÊM CỦA CHIẾT XUẤT NƯỚC HÀNH ĐEN TRÊN MÔ HÌNH CHUỘT ĐƯỢC GÂY VIÊM KHỚP DẠNG THẤP VỚI FCA
Authors: TRẦN THỊ PHƯƠNG NHUNG  , TRẦN THỊ THANH NHÃ  , TRƯƠNG THỊ MỸ ÚC  , VŨ THỊ ÁNH TUYẾT  , NGUYỄN TRƯỜNG SƠN  , NGUYỄN THỊ KIM TRINH  , QUẢNG TRẦN PHƯƠNG TUYÊN  , TÔ MINH QUÂN  , TRẦN PHẠM THÚY VY  , TRẦN HOÀI NINH
Published: May 2022

Viêm khớp dạng thấp là một rối loạn viêm mãn tính chủ yếu tấn công các khớp linh hoạt. Hành đen, sản phẩm chế biến mới từ hành tươi (Allium cepa L.), có nhiều đặc tính dược lý và sinh học như chống oxy hóa, chống viêm và ung thư. Tuy nhiên khả năng ngăn ngừa và chống viêm của chiết xuất hành đen đối với bệnh viêm khớp vẫn chưa được báo cáo. Do đó, chúng tôi đã đánh giá chiết xuất nước hành đen (AeBA) với liều lượng (200, 300, 400 mg/kg thể trọng), thuốc tham chiếu Mobic (7,5 mg/50kg thể trọng) sử dụng mô hình chuột bị viêm khớp do FCA (0,1 ml/con chuột). Trọng lượng cơ thể, nhiệt độ bàn chân sau, chỉ số khớp, trọng lượng cơ quan, thông số huyết học, sinh hóa, mô bệnh khớp mắt cá chân được sử dụng làm tiêu chí để đánh giá tác động của AeBA đối với tình trạng viêm khớp. Kết quả, AeBA (400 mg/kg thể trọng) thể hiện hoạt tính ngăn ngừa và chống viêm thông qua việc cải thiện các chỉ tiêu khảo sát. Những kết quả này chứng minh rằng AeBA có tác dụng chống viêm. AeBA là ứng cử viên tiềm năng cho liệu pháp điều trị viêm khớp.