bluuebunny/crossref_metadata_2025 huggingface dataset:
Competencia comunicativa: la argumentación en estudiantes del primer ciclo de la UCSG: un estudio de casos
Authors: Ayala Clara
Published: June 2021

La argumentación es una destreza del pensamiento y del lenguaje que los estudiantes universitarios deben manejar con excelencia,  pero los resultados nos demuestras que no es así. Es[cibb1]  necesario que esta destreza deba ser desarrollada desde edad temprana y lo indicado sería hacerlo con ejemplos de la vida diaria. Para este estudio de caso se eligieron estudiantes del primer ciclo. Era necesario que los estudiantes hicieran investigaciones grupales para fortalecer el respeto y la tolerancia, rasgos necesarios para fortalecer la democracia. Para finalizar este estudio se aplicaría una rúbrica a las exposiciones individuales donde debían demostrar la destreza de su capacidad argumentativa. [cibb1]El trabajo no cumple con las caracterisiticas del curso el resumen no visualiza sus partes.
Aprendizaje en las redes sociales un enfoque de desarrollo en la comunidad
Authors: Galán Figueroa Patricia de los Ángeles , Hernández Gómez Ronald Mauricio , Espinoza Cordero Andrea Isabel
Published: June 2021

Actualmente es evidente la importancia que ha tomado la inclusión de las Tecnologías de la Información y Comunicación (TIC) en los procesos de actualización de los programas Educativos. Las redes sociales son parte de los recursos de las TIC, pertenecientes a la web 2.0, y permiten una comunicación rápida y ágil de información entre sus usuarios, por lo que pueden ser un recurso idóneo para ser utilizadas con fines pedagógicos. Como propósito analizar el uso que docentes y estudiantes dan a las redes sociales como apoyo al proceso de aprendizaje, para qué actividades académicas sugieren su uso, cuál es la importancia que le dan como apoyo al aprendizaje, y la diferencia de opinión que existe entre Docentes y estudiantes sobre la importancia de su uso como una herramienta pedagógica. Con esa finalidad  Se utilizó una encuesta tipo cuestionario, que fue aplicado a 133 estudiantes y 16 docentes de la Facultad de Ecología Humana de la Universidad Grande. Los resultados indican que los estudiantes en este caso que utilizan las redes sociales y sugieren su incorporación como apoyo a su procesode aprendizaje, mientras los docentes, aunque reconocen la importancia de incluirlas en sus Planificaciones, muestran aún recelos sobre su incorporación en la práctica pedagógica
Wir wollen Mittelalter!
Authors: Hamann Sven
Published: June 2021

Das Geschichtsbild zum Mittelalter ist bei Schülerinnen und Schülern wesentlich vorgeprägt durch die allgegenwärtige Populärkultur. Es dient zumeist als Negativfolie, die die Vorstellung von der eigenen Gegenwart
als überlegen und zivilisiert scheinbar bestätigt. Exemplarisch kann dieses Bild im Schulgeschichtsunterricht aufgebrochen und damit auch für andere Bereiche der Geschichte Vorarbeit geleistet werden, um übereilte
historische Urteile über vermeintlich unzivilisierte oder rückständige frühere Gesellschaften zu überwinden. Ausgehend von der Beschäftigung mit der überaus dynamischen Zeit des Mittelalters kann im
Schulgeschichtsunterricht vermittelt werden, dass gegenwärtige Strukturen historisch gewachsen sind. Im Sinne der „longue durée“ nach Fernand Braudel können dabei sowohl soziale als auch ökonomische Entwicklungen
erfasst werden. In der Forschung wurde die Epoche des Mittelalters in Vergangenheit und Gegenwart auch immer wieder zum Spielball einer gemeinsamen Erinnerungskultur und zur Legitimation von Herrschaftsverhältnissen
herangezogen. Über die Beschäftigung mit der Instrumentalisierung der Epoche zur Zeit des Nationalsozialismus und der DDR, aber auch in den vergangenen Jahren unter Bezugnahme auf den Mythos Karls des Großen
als „Vater Europas“ können Schülerinnen und Schüler zu Erkenntnissen über den Konstruktcharakter von Geschichte, ihrer Bedeutung als Legitimationsinstrument und als identitätsstiftendes Element gelangen.
Alte Sprachen und Geschichtsunterricht
Authors: Gaul Volker
Published: June 2021

Katharina Wesselmann stellt die Bedeutung des altsprachlichen Unterrichts in unserer Gesellschaft dar. Sie betont dabei den Mehrwert der Sprachkenntnis, geht über zur Fachsprache und hebt darüber hinaus die unterrichteten Inhalte
besonders hervor. In dem vorliegenden Kommentar werden bezüglich dieser Aspekte Parallelen zu dem Geschichtsunterricht gezogen. Dazu gehört vor allem die für diesen essentielle Quellenkritik, die jedoch bislang bei
dem Einsatz von überwiegend übersetzten (und auf diese Weise schon interpretierten) Quellen wenig Beachtung in der Geschichtsdidaktik fand. Auch ein Blick auf den Einsatz der Fachsprache wird für die angesprochenen
Bereiche kurz gerichtet. Am Ende richtet sich der Blick zwangsläufig auf die Geschichtskultur, da wir von altsprachlichen Inschriften auf Gebäuden, Denkmälern etc. umgeben sind, so dass interdisziplinäres Arbeiten
überaus sinnvoll und notwendig erscheint.
CONSUMO ENERGÉTICO EN LOS HOGARES DE MÉXICO
Authors: Ramírez Hernández Pablo
Published: June 2021

Se realiza un hallazgo conforme a un análisis de regresión por cuantiles a observar el consumo energético en hogares mexicanos y a clasificar la línea de pobreza energética a partir de variables controlables.
The Acidocerinae (Coleoptera, Hydrophilidae): taxonomy, classification, and catalog of species
Authors: Girón Jennifer C. , Short Andrew Edward Z.
Published: June 2021

The cosmopolitan subfamily Acidocerinae (Coleoptera: Hydrophilidae) is one of the largest and most taxonomically challenging lineages of water scavenger beetles. Recent phylogenetic studies have substantially advanced our understanding of acidocerine relationships but also illuminated the twin challenges of poorly delineated generic concepts and a classification broadly incompatible with the phylogeny. Here, these two challenges are addressed by providing a comprehensive synthesis and taxonomic tools for the Acidocerinae, including (1) a brief history and the current state of acidocerine classification, (2) a review of acidocerine ecology and collection methods, (3) the current knowledge of larval and fossil acidocerines, (4) a morphological primer on characters of taxonomic and systematic importance within the lineage, (5) a key to the world genera of Acidocerinae, (6) diagnoses, habitus, and aedeagal images, distribution maps, and summary of knowledge for each of the 23 extant genera in the subfamily, and (7) a complete annotated taxonomic catalog including the published distributions, synonyms, and references for all described 541 acidocerine species recognized as of 1 April 2021. The following nomenclatural acts are proposed to bring the phylogeny and classification into alignment:Colossocharesgen. nov.is established to accommodate two African species previously described asHelochares(s. str.);Novocharesgen. nov.is newly established to accommodate 15 Neotropical species previously included inHelochares(s. str.); the remainingHelocharessubgeneraHelocharimorphusKuwertsyn. nov.andHydrobaticusMacLeaysyn. nov.are synonymized withHelocharesMulsant.PeltocharesRégimbartsensu nov.is redefined to include eight Old World species previously included inHelochares(s. str.). A lectotype is designated forPeltochares conspicuusRégimbart, the type species of the genus. The taxonomic and morphological circumscription ofHelocharessensu nov.is narrowed and redefined.
Hospital Readmission Outcomes by Frailty Risk in Adults in Behavioral Health Acute Care
Authors: Lekan Deborah A. , Jenkins Marjorie , McCoy Thomas P. , Mohanty Somya , Manda Prashanti , Yasin Reham
Published: June 2021

The purpose of the current retrospective study was to determine whether frailty is predictive of 30-day readmission in adults aged ≥50 years who were admitted with a psychiatric diagnosis to a behavioral health hospital from 2013 to 2017. A total of 1,063 patients were included. A 26-item frailty risk score (FRS-26-ICD) was constructed from electronic health record (EHR) data. There were 114 readmissions. Cox regression modeling for demographic characteristics, emergent admission, comorbidity, and FRS-26-ICD determined prediction of time to readmission was modest (incremental area under the receiver operating characteristic curve = 0.671). The FRS-26-ICD was a significant predictor of readmission alone and in models with demographics and emergent admission; however, only the Elixhauser Comorbidity Index was significantly related to hazard of readmission adjusting for other factors (adjusted hazard ratio = 1.26, 95% confidence interval [1.17, 1.37];
p
< 0.001), whereas FRS-26-ICD became non-significant. Frailty is a relevant syndrome in behavioral health that should be further studied in risk prediction and incorporated into care planning to prevent hospital readmissions. [
Journal of Psychosocial Nursing and Mental Health Services, 59
(10), 27–39.]
Development and Validation of the Gaming Disorder Scale–Family Form
Authors: Irmak Aylin Yalçin , Çelikkalp Ülfiye , Aydin Gülsün Özdemir , Metinoglu Meryem
Published: June 2021

The aim of the current methodological study was to develop a psychometric measurement tool for determining internet gaming disorder (IGD) based on family members' responses. The sample comprised 173 adolescents and their families. For reliability, the scale was created using item-total correlation, internal consistency coefficient, and test–retest correlation methods. The validity of the scale was evaluated using content validity index (CVI), construct validity, explanatory factor analysis (EFA), and confirmatory factor analysis (CFA). CVI for the scale was 0.92, Cronbach's alpha coefficient was 0.963, and item-total correlation ranged between 0.67 and 0.81. In the EFA, 61.7% of the total variance on the one-dimensional scale was explained and item factor loads ranged between 0.71 and 0.84. CFA showed good fit of the model. Thus, the Gaming Disorder Scale–Family Form, which was proven to be a valid and reliable measurement tool, is recommended for use by health care providers and community partners in the evaluation of potential IGD in adolescents. [
Journal of Psychosocial Nursing and Mental Health Services, 59
(11), 25–32.]
Generalized optimal liquidation problems across multiple trading venues
Authors: Yang Qing-Qing , Ching Wai-Ki , Gu Jia-Wen , Siu Tak-Kuen
Published: June 2021

In this paper, we generalize the Almgren-Chriss's market impact model to a more realistic and flexible framework and employ it to derive and analyze some aspects of optimal liquidation problem in a security market. We illustrate how a trader's liquidation strategy alters when multiple venues and extra information are brought into the security market and detected by the trader. This study gives some new insights into the relationship between liquidation strategy and market liquidity, and provides a multi-scale approach to the optimal liquidation problem with randomly varying volatility.
Using optimal control to optimize the extraction rate of a durable non-renewable resource with a monopolistic primary supplier
Authors: Fossas Enric , Corominas Albert
Published: June 2021

The problem dealt with in this paper is that of optimizing the path of the extraction rate (and, consequently, the price) for the monopolistic owner of the primary sources of a totally or partially durable non-renewable resource (such as precious metals or gemstones) in a continuous-time frame, assuming that there is an upper bound on the extraction rate and with an interest rate equal to zero. The durability of the resource implies that, unlike the case of non-durable resources, at any time there is a stock of already-used amounts of the resource that are still potentially reusable, in addition to the resource available in the ground for extraction. The problem is addressed using the Maximum Principle of Pontryagin in the framework of optimal control theory, which allows identifying the patterns that the optimal policies can adopt. In this framework, the Hamiltonian is linear in the control input, which implies a bang-bang control policy governed by a switching surface. There is an underlying geometry to the problem that determines the solutions. It is characterized by the switching surface, its time derivative, the intersection point (if any) and the bang-bang trajectories through this point.
Sparse minimax portfolio and Sharpe ratio models
Authors: Zu Chenchen , Yang Xiaoqi , Yu Carisa Kwok Wai
Published: June 2021

In this paper, we investigate sparse portfolio selection models with a regularized \begin{document}$ l_p $\end{document}-norm term \begin{document}$ (0
 and negatively bounded shorting constraints. We obtain some basic properties of several linear \begin{document}$ l_p $\end{document}-sparse minimax portfolio models in terms of the regularization parameter. In particular, we introduce an \begin{document}$ l_1 $\end{document}-sparse minimax Sharpe ratio model by guaranteeing a positive denominator with a pre-selected parameter and design a parametric algorithm for finding its global solution. We carry out numerical experiments of linear \begin{document}$ l_p $\end{document}-sparse minimax portfolio models with 1200 stocks from Hang Seng Index, Shanghai Securities Composite Index, and NASDAQ Index and compare their performance with \begin{document}$ l_p $\end{document}-sparse mean-variance models. We test the effect of the regularization parameter and the negatively bounded shorting parameter on the level of sparsity, risk, and rate of return respectively and find that portfolios including fewer stocks of the linear \begin{document}$ l_p $\end{document}-sparse minimax models tend to have lower risks and lower rates of return. However, for the \begin{document}$ l_p $\end{document}-sparse mean-variance models, the corresponding changes are not so significant.
Determining optimal marketing and pricing policies by considering customer lifetime network value in oligopoly markets
Authors: Vatankhah Sahar , Samizadeh Reza
Published: June 2021

Nowadays, the customer network effects are becoming a central issue for the companies, while the previous studies have been only limited to customer lifetime value and its related models. Therefore, this paper aims to presents a model for calculating customer lifetime value, and simultaneously the network effects are considered. For this purpose, an oligopoly market is considered in which companies compete with each other. The companies individually have a number of buyers and sellers. Interestingly, their policy is based on offering services to their buyers free, and receiving the membership fees from the sellers instead. Customers influence each other, and their word-of-mouth marketing leads to a change in the number of companies' customers. This interaction is also observed among the sellers. In the absence of buyers, the presence of sellers is meaningless. In other words, there is a remarkable proportion between the number of buyers and sellers, which directly affects the companies' profitability. Each company seeks to determine the optimal marketing and pricing policies, considering the effects of the network. By applying differential game theory, the companies are able to receive the market share, advertising, and pricing strategy. The Genetic Algorithm is employed to solve the model. Finally, a numerical example and model validation are provided to demonstrate the proposed model capabilities.
Capital asset pricing model under distribution uncertainty
Authors: Chen Yu , Cui Zixian , Di Shihan , Zhao Peibiao
Published: June 2021

In this paper, we investigate and demonstrate the capital asset pricing model (CAPM) based on distribution uncertainty (or ambiguity, defined as uncertainty about unknown probability).

We first achieve directly capital asset pricing model based on spectral risk measures (abbreviated as SCAPM) in the case of normal distributions; Then we can characterize SCAPM under the condition of uncertain distributions of returns by solving a robust optimal portfolio model based on spectral measures. Specifically, we do it in the following two folds: 1) Completing first the corresponding effective frontier fitting; 2) Getting the valuation of the market portfolio return \begin{document}$ r_m $\end{document} and the risk parameters of \begin{document}$ \beta_\phi $\end{document} in use of the kernel density estimation under the distribution uncertainty of returns.

Finally, by selecting 10 stocks from the constituent stocks of the HS300 Index, and comparing the valuation results from the SCAPM formula with the actual yield in the market, we verify the model proposed in the present paper is reasonable and effective.
Inelastic Boltzmann equation driven by a particle thermal bath
Authors: Sanabria Rafael
Published: June 2021

We consider the spatially inhomogeneous Boltzmann equation for inelastic hard-spheres, with constant restitution coefficient \begin{document}$ \alpha\in(0,1) $\end{document}, under the thermalization induced by a host medium with fixed \begin{document}$ e\in(0,1] $\end{document} and a fixed Maxwellian distribution. When the restitution coefficient \begin{document}$ \alpha $\end{document} is close to 1 we prove existence and uniqueness of global solutions considering the close-to-equilibrium regime. We also study the long-time behaviour of these solutions and prove a convergence to equilibrium with an exponential rate.
Primeras medidas del tamaño del genoma en Carduncellusy los géneros afines Femeniasia y Phonus (Asteraceae, Cardueae), con datos para 21 táxones
Authors: Garnatje Teresa , Hidalgo Oriane , Vallés Joan , Garcia Sónia , Romo Àngel , Vilatersana Roser
Published: June 2021

El tamaño del genoma de 18 especies del género Carduncellus, dos especies de los géneros relacionados, Phonus y el género monotípico Femeniasia (F. balearica) ha sido medido por primera vez mediante citometría de flujo. Los niveles de ploidía se asignaron utilizando datos de tamaño del genoma junto con los recuentos de cromosomas previamente reportados. Se construyó un marco filogenético para visualizar la distribución de las características citogenéticas de los táxones. Los resultados confirmaron tres niveles de ploidía (2x, 4x y 6x), con un predominio de los táxones diploides. Los valores de 2C oscilaron entre 3,24 pg en Carduncellus calvus y 11,16 pg en C. eriocephalus, mientras que el tamaño del genoma monoploide (1Cx) osciló entre 1,29 pg en C. duvauxii (4x) y 2,30 pg en Phonus rhiphaeus (2x). La media de los valores 1Cx para los tetraploides fue menor que para los diploides. Los valores de tamaño del genoma de Carduncellus, Femeniasia y Phonus fueron más elevados que los de Carthamus dentro del mismo nivel de ploidía. Este resultado concuerda con una tendencia frecuentemente observada en plantas en la que los táxones con ciclos de vida largos presentan tamaños del genoma más elevados que los táxones relacionados que poseen ciclos de vida cortos.
The Effectiveness of a Learner-Centered Pedagogical Approach with Flipped Pedagogy and Digital Learning Environment in Higher Education Feedback on a Cell Biology Course
Authors: Ouchaouka Lynda , Laouina Zineb , Moussetad Mohamed , Talbi Mohammed , El Amrani Najat , ElKouali M'hammed
Published: June 2021

This paper aims to examine the results of a survey of 292 first-year biology students to evaluate their perception of their learning environment, as well as their ability to handle an educational innovation such as reverse pedagogy and serious gaming integrated into a hybrid learning environment. We also present the approaches and steps that allowed us to validate our statistical study. We used a methodology to validate the instrument developed; using standard parameters, the mean and the standard deviation to describe quantitative data and percentages for qualitative data. The internal consistency of the scales was assessed using the correlation coefficient calculated after a one-factor analysis of variance as well as Cronbach's alpha coefficient (α). The scores show that the items and subscales have good internal consistency. In addition, it shows that the students are fully aware of their learning environment and the difficulties they encounter. They are motivated to embrace our pedagogical innovation. It, therefore, confirms our willingness to implement this pedagogical model for students in the coming years.
An Improved Early Student’s Academic Performance Prediction Using Deep Learning
Authors: Aslam Nida Muhammad , Khan Irfan Ullah , Alamri Leena H. , Almuslim Ranim S.
Published: June 2021

Nowadays due to technological revolution huge amount of data is generated in every fields including education as well. Extracting the useful insights from consequential data is a very critical task. Moreover, advancement in the deep learning techniques resulted in the effective prediction and analysis of data. In our proposed study deep learning model is be used for predicting the student’s academic performance. Experiments were performed using the two courses da-ta i.e., mathematics and Portuguese course. The data set contains demograph-ic, social, educational and students course grade data. The data set suffers from the imbalance, SMOTE (synthetic minority oversampling technique) is used. We evaluate the performance of the proposed model using several fea-ture sets and evaluation measures such as precision, recall, F-score, and ac-curacy. The result showed the significance of the proposed deep learning mod-el in early prediction of the students’ academic performance. The model achieved an accuracy of 0.964 for Portuguese course data set and 0.932 using mathematics course data set. Similarly, the precision of 0.99 for Portuguese and 0.94 for mathematics.
A Novel Teaching Approach for Mobile Internet-Based Collaborative Knowledge Construction in "Teaching Management"
Authors: Zhang Sheng
Published: June 2021

With the development of education, teaching, as the basic and central work at school, is conducted most frequently with the largest workload. In simple words, teaching management for the purpose of the management of teaching work is an essential content of school management, as well as a basic activity of school leaders. Therefore, more than just the basis and guarantee for the normal operation of school teaching, teaching management course plays a critical role in teacher growth and education reform, has great significance for schools. However, problems in current teaching management courses, such as lack of teacher-student interaction, single teaching content, and simple teaching methods have hindered students to develop interest in learning, and impede teachers to give full play to their educational personality. In this paper, a new collaborative knowledge construction teaching approach was applied in mobile Internet technology environment, and a blended teaching model of students’ online autonomous collaborative learning before class, knowledge internalization in class, and leak filling after class was proposed. At the same time, the personalized recommendation technology based on collaborative filtering algorithm was applied. Firstly, mobile terminal core information was collected from the mobile Internet learning platform for preprocessing, and then the processed data were identified by the collaborative filtering algorithm to recognize the intrusion data, thereby realizing the quick screening and accurate pushing of learning resources. It was found from the teaching practice that this model can effectively enhance students' interest in learning, improve learning effects and independent innovation capabilities.
A New Machine Learning Framework for Effective Evaluation of English Education
Authors: Zhang Lei
Published: June 2021

With the rapid development of information technology, English education has attracted the interest of scholars for its ability to rely on computers to analyze and understand human language. Taking machine learning (ML) as the core, this paper tries to develop an evaluation system for ML-based English education. Specifically, a basic ML model was established with four stages: environment, knowledge base, learning process, and implementation process. The entire ML system was divided from top to bottom into a user layer, a business layer, and a data layer. Application results show that, during the ML, even users with similar personal data and the same goal have vastly different suitable learning materials, due to their gap in personal capabilities. The research provides an effective way to evaluate English education in the context of computer science and artificial intelligence.
Professional Skills Development Through the Network Learning Community Using an Online Learning Platform
Authors: Ashar Muhammad , Kamdi Waras , Kurniawan Dediek Tri
Published: June 2021

Networked learning Community (NLC)  that integrates a professional context into the learning experience that uses learning networks to promote self-efficacy and professional development. Online Learning design integrates three techniques: focus on developing personal learning networks, live streaming and online based learning communities and immersive skills and experience mastery for professionals. The hypothesis is that networked learning community among peers in the online learning will help support skills development and confidence in sustainable use of the platform in a personalized way. Meanwhile networking for learning with professionals will strengthen the impact of mastery experience on self-efficacy. Learning experiences as relevant for lifelong learning and professional success are important in today's learning era. NLC aligned with the goals of the 21st century skills movement can be an important mechanism for scaling up efforts to redesign academies that offer skills with a forum for broad but personal learning. The live streaming technique in the learning process in online media has a significant impact in monitoring and monitoring one-on-one learners' abilities. Learning outcomes can be easily corrected and evaluated by relevant experts so that the work can be used as a good portfolio. In the application of the  NLC the target output is that there is a promotion mechanism for students to the industrial world by bringing together professional companies and / or developing entrepreneurship with the addition of business training to the relevant NLC. The results of the platform development show that the flow and process of improving skills and professional learning with the community in one field of multimedia industry is getting better
Le quartier du port de Marseille 1500-1790
Authors: Castrucci Colette
Published: June 2021

Cet ouvrage, issu d’une thèse de doctorat, propose une reconstitution du quartier de Marseille dénommé Corps de Ville à partir du XVIe siècle, situé autour de l’hôtel de ville, le long du quai du port, qui constitua le centre de la ville du Moyen Âge au XVIIIe siècle, mais fut presque entièrement détruit en 1943.

Outre une restitution de la topographie des rues et des îlots qui n’est plus lisible depuis la reconstruction de cette rive septentrionale du port, l’ouvrage restitue la trame urbaine disparue, avec ses artères, ses places et ses marchés. Il montre également l’attractivité de quartier en replaçant les lieux de pouvoir civils et religieux.
Au centre de l’ouvrage se situe l’histoire des maisons du quartier. La mise en perspective des textes d’archives et des vestiges découverts au cours des fouilles archéologiques réalisées autour de l’hôtel de ville ces dernières années, a en effet permis de restituer, pour les périodes comprises entre le XVIIe et la fin du XVIIIe siècle, la forme extérieure et l’agencement des intérieurs, mais également de définir les techniques et les matériaux mis en œuvre dans la réalisation de ces bâtiments. Le livre s’inscrit aussi dans l’histoire sociale par la recherche de l’évolution des manières d’habiter.
La diversité de maisons qui apparaît dans cet ouvrage permet de nuancer l’image dépréciée dont ce quartier a eu trop souvent à souffrir. Elle le replace au contraire comme un « quartier de centralité et de reconnaissance sociale » qui lui faisait défaut jusqu’ici.
Design Contributions for the COVID-19 Global Emergency (Part 1): Empirical Approaches and First Solutions
Authors: Rossi Emilio , Di Nicolantonio Massimo , Ceschin Fabrizio , Mincolelli Giuseppe , Dos Santos Aguinaldo , Kohtala Cindy , Jacques Edu , Cipolla Carla , Manzini Ezio
Published: June 2021

This is a landmark publication for the field of design. It was catalysed by unprecedentedcircumstances, as designers around the world had to rapidly deploy their competencies instrategic problem-solving to help humanity in the fight against an invisible enemy during aglobal pandemic. In alliance with other disciplines, from medicine to mechanical engineering,from computing to anthropology, designers everywhere have addressed the challenges andproduced remarkable results through a diversity of initiatives. This Special Issue presents apeer-reviewed sample of these initiatives.
Contemporary Design in Quarantine: a Critical Review of Design Responses to Covid-19 Crisis
Authors: Perez Iana Uliana , Melara Lucas Furio , Magro Júnior José Carlos , Moura Mônica
Published: June 2021

The following article aims to analyze Brazilian and international cases of design responses to the COVID-19 pandemic related crises. It initiates with reflections about the social and political roles of design, emphasizing the importance of social innovation, design activism, and transition design to contemporary design. The methodological approach adopted is qualitative and quantitative with assessment and selection of data based on the bibliographic, desk, and documentary research methods. The result of 113 mapped cases is presented by graphic synthesis and discussed through the bibliographic research.
Design Strategy and Case Study of Distributed System Resilience in Chinese Context
Authors: Xia Nan
Published: June 2021

Whether it is a large-scale complex challenge or a radical change, it is calling for a more resilient and sustainable socio-technical system. Distributed system is a new trend of sustainable transition of socio-technical system. The research on related design strategies of distributed systems can help us better understand the nature of distributed systems, the role of designers, and help designers more calmly deal with future related challenges. This paper has conducted an in-depth understanding and discussion on the resilience of soico-technical systems and the relationship between distributed systems and resilience. We selected three representative cases, combined with a series of response measures taken by China in Wuhan during COVID-19 to analyze. Three types of distributed system design strategies suitable for China are identified.
Strategies of design for social innovation and design activism in the promotion of positive social capital during the COVID-19 pandemic in Brazil.
Authors: Prado Gheysa Caroline , Leme Felipe Dalla Pria , Zem Messias Letícia , Miranda Nathan Samuel da Costa , Bona Gonçalves Rafaella de
Published: June 2021

This case study aimed at mapping initiatives of social innovation that have promoted positive social capital during the COVID-19 pandemic in Brazil. To this end, information about the actions and their developers were collected online and further described using the forms "Light Format" and "In-Depth Format", from the toolkit developed by the Design for Social Innovation and Sustainability (DESIS) Network. In addition, interviews with the people involved in the projects were carried out in order to obtain further details. From the promising cases mapped, 15 were selected and categorized according to their field, coverage area and target. Finally, the initiatives were assessed based on the concepts of design for social innovation (Manzini, 2008) and design activism (Fuad Luke, 2009; Thorpe, 2012). The analysis showed that whether the actions proposed had the design framework conceptions as a theoretical basis or not, the projects indeed adopted design strategies to reach their goals, leading to positive impact in the social, economic and environmental areas and thus promoted positive social capital.
Design for Resilience: Mapping the needs of Brazilian communities to tackle COVID-19 challenges
Authors: Fonseca Braga Mariana , Romeiro Filho Eduardo , L.O. Mendonça Rosângela Míriam , Gomes Ribeiro de Oliveira Lorena , Galvão Guimarães Pereira Haddon
Published: June 2021

The COVID-19 pandemic brought the urgency in the search for innovative solutions in different areas of knowledge to mitigate the effects and impacts of the disease, whether on health, social or economic terms. Urban and socio-economic determinants of informal-settlement communities make COVID-19 challenges even harder to be overcome, requiring local and situated solutions that consider their livelihood diversity. This manuscript shows the results of an exploratory pilot study which addressed the potential of participatory design to contribute to mitigating COVID-19 effects and impacts, identifying the problems, adaptative strategies, challenges for and needs of Rio de Janeiro and Belo Horizonte communities. It was drawn from triangulation of methods and analysis of multiple (primary and secondary) data sources. The needs of communities were raised through online roundtables with community members, representatives of NGOs, designers, architects and researchers. Analysis of the roundtables was conducted collaboratively by the researchers through online tools, including Affinity Mapping, and 5 Whys. The findings point out the needs of communities clustered in 6 major themes, five of which indicate potential areas in which participatory design can play a meaningful role and need to be further investigated.
LHF Connect: a DIY telepresence robot against COVID-19
Authors: Fossati Maria Rosanna , Catalano Manuel Giuseppe , Carbone Marina , Lentini Gianluca , Caporale Danilo , Grioli Giorgio , Poggiani Mattia , Maimeri Michele , Barbarossa Manuel , Petrocelli Cristiano , Vivani Paola , Calderini Claudia , Carrozzi Laura , Ferrari Mauro , Bicchi Antonio
Published: June 2021

This contribution describes a case study of a “do-it-yourself” (DIY) opensource service and related product to help combating the COVID-19 emergency. It illustrates the birth of LHF Connect, a project designed to facilitate communication between patients isolated in COVID-19 hospitals’ ward and their relatives. LHF Connect is a teleoperated robot that can move in autonomy around the hospital. A User Centered Design approach, methods and specific tools helped in managing crucial steps of the design process such as i) the collection of needs coming from the context, stakeholders and end-users; ii) defining the service blueprint; iii) imagining finishing concepts; and iv) managing the communication activities. The initiative has been promoted by a multidisciplinary team of researchers (mainly roboticists with the help of specific competences coming from Design discipline).
Individual protection mask with improved filtering properties: 3D printed solution guided by design materials selection
Authors: Pagnan Andreia Salvan , Pagnan Caroline Salvan , Ayres Eliane , Fernandes Marco Aurélio Silva
Published: June 2021

The COVID-19 pandemic has mobilized most countries to investigate multiple virus mitigation interventions, the face protection masks are among the main ones. Filtration and breathability are important factors in the applied materials choice. Design plays a fundamental innovative role in developing new products and materials that meet this emergency demand. 3D printing allows adjustments from an industrial production to answer an increasingly specific demand. This process allows the printing of a poly (lactic acid) (PLA) filter mesh with Tourmaline (TM) for a mask made in a triple layer with cotton fabric. One of the properties of TM is the negative ions emission, which allows capturing particles dispersed in the air. PLA is a bio-based and biodegradable polymer, with the corn as it’s most effective source. It makes it a good choice for the project, aiming to be aligned to environmental issues. In addition, the cotton application and the modeling directed to the  domestic sewing use make the project accessible to the population, adaptied to digital and personal manufacturing and aligned to the Maker Movement.
Tri-Design: Coordination between Healthcare, Design, and Regulatory Communities
Authors: Rebola Claudia B , Norton Ryan , Doehler Steve , Kubley Ashley
Published: June 2021

This paper discusses the approaches undertaken by organizations, coordination between healthcare, design, and regulatory communities, to respond to the needs for the crisis and bring about models for agile innovation and of disease mitigation. The COVID-19 Design Innovation was born at the core of a major university to operate as a hub for innovation.  In an effort to connect designers, makers, and healthcare professionals, the initiative converged with the main motivation is to be organized in collective efforts with the crisis and deliver creative design innovations. Several products were brought about through the initiative efforts: off the shelf solutions and community driven, hybrid prototyping (reutilizing parts), distributed manufacturing, material investigations, and rapid prototyping for turning labs as manufacturing facilities. As solutions reached refinement, healthcare called for volume, solutions were brought to the community as a rapid response to the crisis. While challenges imposed by time and production, the crisis help coordinate efforts to be agile networks of stakeholders working towards a common goal, hacking the crisis by design.
Design in emergency scenario: project of a hand sanitizer dispenser in public transport using Design Sprint method
Authors: Piccoli Mariana , Barili Brandi Leonardo , Kruger da Costa Vinícius , Vellar Gomes Eric , Da Costa Bório Juliana , Brodt Camila , Ritter Vitória , Ramos Aldrighi Tamires
Published: June 2021

In the emergency scenario generated by COVID-19 pandemic, the development of fast solutions to reduce the contagious curve can mean saving lives. Democratic access to prevention methods is essential, especially in places with high exposure to contamination and whose activities have not been interrupted, such as public transportation. This work presents the development of a hand sanitizer dispenser for public transportation and other possible locations in the urban environment, designed during an online marathon. The focus is on the development of the Design Sprint method and its adaptations to fit the remote work and other constraints due social distance. The final product was designed to be produced by 3D printing and open design, to fast distribution and replication. It fits in the bus's handrails, with some positioning possibilities and the use of PET bottles as alcohol containers. As a result, the paper highlights the particularities of agile methods for the design process at a distance and demonstrates that the process used allows for quickly responding to solutions for emerging needs.
Design, education, and the online tech-pandemic
Authors: Bernardo Nuno , Duarte Emilia
Published: June 2021

Amidst the COVID-19, the use of technology in the learning environment was no longer a matter of choice. Forced by circumstance, educators had to adapt in order to see the academic year through. While for some, already used to an online modality, it was business as always, for others was the start of a journey through unfamiliar territory. This study inserts itself in such context. It presents and discusses results gathered through an online questionnaire about the perceptions and personal experiences of design educators in Higher Education (HE) caught in this move from in-class face-to-face onto online teaching. Objectively, it portrays how this shift impacted their ability to teach, the compromises made or alternatives sought, and views towards a more technologically enabled future in HE. From a more extensive reliance on Learning Management Systems (LMS), changes in the learning environment, and perspectives of near-future uses of Virtual Reality (VR) in distance education, this study covers uses of technology but also the identification of pain points influencing the overall experience, as well as positive perceptions and significant changes made to the learning environment.
Designing with communities of place: the experience of a DESIS Lab during COVID-19 and beyond
Authors: Cipolla Carla
Published: June 2021

Social distancing, lockdown, and the consequent intensification of online interactions brought by Covid-19 are raising new questions for design theory and practices. The lack of physical or face-to-face interactions blocked the design activities developed in public spaces. The article aims to share a DESIS Lab experience to overcome these limitations and continue in a contactless way. Firstly, a literature review introduces the Lab's theoretical and methodological approaches; then, a process started previously to the pandemic outbreak is presented, called My Neighborhood. It happens in a neighborhood in Rio de Janeiro, called Grajaú, with face-to-face activities developed in a public square. Secondly, a new initiative prototyped after the pandemic outbreak is described. Grajaú Collab is an online mapping that identifies micro-businesses and volunteers in the neighborhood. The Lab's theoretical and methodological approaches provided the orientation and adaptability to stay with the local community under the pandemic. My Neighborhood has moved online and generates Grajaú Collab; however, both remain closely referred to the neighborhood's physical space. Online and offline modalities become two complementary sides of the same open-ended learning process and, in the future, the lab team can restart offline and face-to-face participation in the neighborhood as a continuum of the same infrastructuring process.
Dental and medical emergencies in the perspective of a general dental practitioner
Authors: Attygalla Manjula
Published: June 2021

No Abstract available.
COVID-19 and Dentisry
Authors: Dave Manas , Ariyaratnam Senathirajah
Published: June 2021

An article commissioned by the Journal of the College of General Practitioners of Sir Lanka.
Effect of Environmental and Socio-Cultural Impacts Caused by Tourism on Residents’ Lives with Special Reference to Ancient City of Anuradhapura
Authors: Jayasinghe J.A.P.M.
Published: June 2021

Tourism is one of the biggest and fastest-growing sectors in the global economy and has significant environmental, cultural, social, and economic effects, both positive and negative. Yet, relatively few studies have addressed the effect of tourism on residents' lives in Anuradhapura as a major touristic destination in Sri Lanka. Anuradhapura ancient city is one of the UNESCO World Heritage Sites and the first kingdom of Sri Lanka, well known for its ruins depicting early Sri Lankan civilization. The main objective of this study is to investigate whether the impact of tourism makes changes on residents’ lives in the ancient city of Anuradhapura. The survey design was quantitative and based on an empirical study. A self-administered questionnaire was used to collect data from the residents of Anuradhapura Ancient city area. A sample of 120 respondents was selected to collect data from the residents. The data was analyzed using SPSS 21 statistical software. Descriptive statistics and Inferential statistics were applied to examine the effect of environmental and socio-cultural impacts caused by tourism on residents’ lives. According to the research findings, environmental pollution, social problems, and congestion & crowding out caused by tourism make significant environmental and socio-cultural changes on residents’ lives in Anuradhapura ancient city area. The results showed that tourism creates significant environmental and socio-cultural changes in residents’ lives in Anuradhapura's ancient city area. Further, this study provides elements for long term benchmark monitoring and observation relating to the resources of the tourism sector.
New Perception to Proto History Burial Site in Andarawewa: An Archaeological and Geochemical Prospection
Authors: Young Sansfica M. , Mendis D. Thusitha , Ishiga H.
Published: June 2021

The megalithic burial site at Galgamuwa Andarawewa is situated at Anamaduwa Secretariat Division in the North Western Province, Sri Lanka. It is evident that 2500 years ago the proto history people had settled in this region. For burying of bodies, they have constructed different types of burials in several places in this region. Thus, to examine the geochemical prospection soil samples from the context (n=12), the glass bead samples from the furnace (n=3) and slag (n=2) were analyzed using X-Ray Fluorescence (XRF) for 22 major and trace elements. For the archaeological prospection, new findings of proto-history burials were found in the excavation carried out at Andarawewa and also many archaeological evidences were found through the field survey and excavations such as beads, inscriptions, pots and shard and chisels. The elemental values of the slag show that, Pb (470-483 mg/Kg) and Cu (855-1083 mg/Kg) are very much higher than Upper Continental Crustal Values. The white part contains higher Pb and Cu than the dark part of the slag. The concentrations of halides F, Br and I are almost similar in the white (glass) part and dark (slag) part. The Pb, Cu and as in the glass beads of the Andrawewa furnace shows that they range between 390-2920, 275-1411 and 12-127 mg/Kg respectively. However, the Fe and Ti concentrations are much lower than in the contexts though P2O5 is higher in the bead samples. The soil samples from the contexts of the area does not show high values for almost all the measured elements. Thus, indicating that the soils are local while the beads may have been prepared with sands brought from other areas. The carbon dating has dated that this burial belongs to the period from 500- 507 B.C.
Ground and Flight Tests of an Unmanned Rotorcraft with Cable-Driven Robotic Landing Gear
Authors: León Benjamin , Rimoli Julian  J. , Di Leo Claudio V.
Published: June 2021

Robotic landing gear enhances the landing capabilities of vertical take-off and landing aircraft on sloped, rough, and even moving landing surfaces. This research demonstrates the integration and systematic testing of a robotic landing gear system for the commercial S-100 Camcopter, expanding the aircraft’s landing capabilities to currently inaccessible terrains with slopes at and above 15°. An overview of the mechanical design, sensors, and controller as integrated into the S-100 rotorcraft is provided along with expected landing performance from simulations tools. The system is then demonstrated using ground and flight experiments, and performance metrics are found to match design metrics. An asymmetry in left and right leg landings during flight testing is observed and analyzed. Lastly, cross-coupling of pitch and roll rates induced by the rotor is discussed as a cause of the asymmetry on this three-legged rotorcraft.
CARLO CATTANEO E LA Â«SCIENZA PENITENZIARIAÂ»
Authors: Pisani Mario
Published: June 2021

The manifold genius of Carlo Cattaneo had the chance also to put his mind to the complex and antiquated regulation of the punishment in prison. In various circumstances, and moving from complementary perspectives, he aimed to highlight the need to put in place a virtuous circle of intersections between practical experimentation and theoretical elaboration, in order to give birth, through a multidisciplinary approach, to concrete and positive reform outcomes.