bluuebunny/crossref_metadata_2025 huggingface dataset:
‘I Know We’ve Got Someone in the School I Can Trust’: Students’ Attitudes Towards School Counselling Services in Slovenian Schools
Authors: Šarić Marjeta , Jeznik Katja , Mažgon Jasna , Gregorčič Mrvar Petra
Published: June 2020

This article examines the role of the school counselling service as a protective factor in adolescents’ lives. School counsellors provide adolescents with information, emotional support, and counselling, and for many adolescents, they are the only source of support outside the family. The findings of a study conducted among 1,363 primary school students and 306 secondary school students from Slovenia are presented. The data showed that the students regard school counsellors favourably, and they generally have a high degree of trust in them.
School Students’ Self-confidence in Science and Intrinsic Motivation for Learning Science: Self-Concept and Self-Efficacy Approach
Authors: Pečiuliauskienė Palmira
Published: June 2020

The study deals with the Lithuanian school students’ self-confidence in science and motivation for learning science on the basis of TIMSS 2015 data. The study analyses two components of self-confidence: science self-concept (SSC) and science self-efficacy (SSE). The research revealed that self-confidence in science of school students statistically significant correlate with the motivation for learning science.
Winds of Change: The Later Wittgenstein’s Conception of the Dynamics of Change
Authors: Eriksen Cecilie
Published: June 2020

The theme of change is one of the most prominent traits of Wittgenstein’s later work, and his writings have inspired many contemporary thinkers’ discussions of changes in e.g. concepts, ‘aspect-seeing’, practices, worldviews, and forms of life. However, Wittgenstein’s conception of the dynamics of change has not been investigated in its own right.

The aim of this paper is to investigate which understanding of the dynamics of changes can be found in the later Wittgenstein’s work. I will argue that what emerges is a rich and complex picture that has the potential to aid our thinking in politics and elsewhere when developing strategies for creating changes. It can do so both as source of inspiration and by countering tempting, yet ultimately problematic ways of conceptualizing change like the hope for transforming harmful traditions and social practices with the help of a general explanatory theory of the fundamental dynamics of changes.
Who Likes What? — SplitLBI in Exploring Preferential Diversity of Ratings
Authors: Xu Qianqian , Xiong Jiechao , Yang Zhiyong , Cao Xiaochun , Huang Qingming , Yao Yuan
Published: June 2020

In recent years, learning user preferences has received significant attention. A shortcoming of existing learning to rank work lies in that they do not take into account the multi-level hierarchies from social choice to individuals. In this paper, we propose a multi-level model which learns both the common preference or utility function over the population based on features of alternatives to-be-compared, and preferential diversity functions conditioning on user categories. Such a multi-level model, enables us to simultaneously learn a coarse-grained social preference function together with a fine-grained personalized diversity. It provides us prediction power for the choices of new users on new alternatives. The key algorithm in this paper is based on Split Linearized Bregman Iteration (SplitLBI) algorithm which generates a dynamic path from the common utility to personalized preferential diversity, at different levels of sparsity on personalization. A synchronized parallel version of SplitLBI is proposed to meet the needs of fast analysis of large-scale data. The validity of the methodology are supported by experiments with both simulated and real-world datasets such as movie and dining restaurant ratings which provides us a coarse-to-fine grained preference learning.
Multi-Feature Discrete Collaborative Filtering for Fast Cold-Start Recommendation
Authors: Xu Yang , Zhu Lei , Cheng Zhiyong , Li Jingjing , Sun Jiande
Published: June 2020

Hashing is an effective technique to address the large-scale recommendation problem, due to its high computation and storage efficiency on calculating the user preferences on items. However, existing hashing-based recommendation methods still suffer from two important problems: 1) Their recommendation process mainly relies on the user-item interactions and single specific content feature. When the interaction history or the content feature is unavailable (the cold-start problem), their performance will be seriously deteriorated. 2) Existing methods learn the hash codes with relaxed optimization or adopt discrete coordinate descent to directly solve binary hash codes, which results in significant quantization loss or consumes considerable computation time. In this paper, we propose a fast cold-start recommendation method, called Multi-Feature Discrete Collaborative Filtering (MFDCF), to solve these problems. Specifically, a low-rank self-weighted multi-feature fusion module is designed to adaptively project the multiple content features into binary yet informative hash codes by fully exploiting their complementarity. Additionally, we develop a fast discrete optimization algorithm to directly compute the binary hash codes with simple operations. Experiments on two public recommendation datasets demonstrate that MFDCF outperforms the state-of-the-arts on various aspects.
D2D-LSTM: LSTM-Based Path Prediction of Content Diffusion Tree in Device-to-Device Social Networks
Authors: Zhang Heng , Wang Xiaofei , Chen Jiawen , Wang Chenyang , Li Jianxin
Published: June 2020

With the proliferation of mobile device users, the Device-to-Device (D2D) communication has ascended to the spotlight in social network for users to share and exchange enormous data. Different from classic online social network (OSN) like Twitter and Facebook, each single data file to be shared in the D2D social network is often very large in data size, e.g., video, image or document. Sometimes, a small number of interesting data files may dominate the network traffic, and lead to heavy network congestion. To reduce the traffic congestion and design effective caching strategy, it is highly desirable to investigate how the data files are propagated in offline D2D social network and derive the diffusion model that fits to the new form of social network. However, existing works mainly concern about link prediction, which cannot predict the overall diffusion path when network topology is unknown. In this article, we propose D2D-LSTM based on Long Short-Term Memory (LSTM), which aims to predict complete content propagation paths in D2D social network. Taking the current user's time, geography and category preference into account, historical features of the previous path can be captured as well. It utilizes prototype users for prediction so as to achieve a better generalization ability. To the best of our knowledge, it is the first attempt to use real world large-scale dataset of mobile social network (MSN) to predict propagation path trees in a top-down order. Experimental results corroborate that the proposed algorithm can achieve superior prediction performance than state-of-the-art approaches. Furthermore, D2D-LSTM can achieve 95% average precision for terminal class and 17% accuracy for tree path hit.
Linguistic Fingerprints of Internet Censorship: The Case of Sina Weibo
Authors: Ng Kei Yin , Feldman Anna , Peng Jing
Published: June 2020

This paper studies how the linguistic components of blogposts collected from Sina Weibo, a Chinese microblogging platform, might affect the blogposts' likelihood of being censored. Our results go along with King et al. (2013)'s Collective Action Potential (CAP) theory, which states that a blogpost's potential of causing riot or assembly in real life is the key determinant of it getting censored. Although there is not a definitive measure of this construct, the linguistic features that we identify as discriminatory go along with the CAP theory. We build a classifier that significantly outperforms non-expert humans in predicting whether a blogpost will be censored. The crowdsourcing results suggest that while humans tend to see censored blogposts as more controversial and more likely to trigger action in real life than the uncensored counterparts, they in general cannot make a better guess than our model when it comes to ‘reading the mind’ of the censors in deciding whether a blogpost should be censored. We do not claim that censorship is only determined by the linguistic features. There are many other factors contributing to censorship decisions. The focus of the present paper is on the linguistic form of blogposts. Our work suggests that it is possible to use linguistic properties of social media posts to automatically predict if they are going to be censored.
Weak Supervision for Fake News Detection via Reinforcement Learning
Authors: Wang Yaqing , Yang Weifeng , Ma Fenglong , Xu Jin , Zhong Bin , Deng Qiang , Gao Jing
Published: June 2020

Today social media has become the primary source for news. Via social media platforms, fake news travel at unprecedented speeds, reach global audiences and put users and communities at great risk. Therefore, it is extremely important to detect fake news as early as possible. Recently, deep learning based approaches have shown improved performance in fake news detection. However, the training of such models requires a large amount of labeled data, but manual annotation is time-consuming and expensive. Moreover, due to the dynamic nature of news, annotated samples may become outdated quickly and cannot represent the news articles on newly emerged events. Therefore, how to obtain fresh and high-quality labeled samples is the major challenge in employing deep learning models for fake news detection. In order to tackle this challenge, we propose a reinforced weakly-supervised fake news detection framework, i.e., WeFEND, which can leverage users' reports as weak supervision to enlarge the amount of training data for fake news detection. The proposed framework consists of three main components: the annotator, the reinforced selector and the fake news detector. The annotator can automatically assign weak labels for unlabeled news based on users' reports. The reinforced selector using reinforcement learning techniques chooses high-quality samples from the weakly labeled data and filters out those low-quality ones that may degrade the detector's prediction performance. The fake news detector aims to identify fake news based on the news content. We tested the proposed framework on a large collection of news articles published via WeChat official accounts and associated user reports. Extensive experiments on this dataset show that the proposed WeFEND model achieves the best performance compared with the state-of-the-art methods.
Weakly-Supervised Fine-Grained Event Recognition on Social Media Texts for Disaster Management
Authors: Yao Wenlin , Zhang Cheng , Saravanan Shiva , Huang Ruihong , Mostafavi Ali
Published: June 2020

People increasingly use social media to report emergencies, seek help or share information during disasters, which makes social networks an important tool for disaster management. To meet these time-critical needs, we present a weakly supervised approach for rapidly building high-quality classifiers that label each individual Twitter message with fine-grained event categories. Most importantly, we propose a novel method to create high-quality labeled data in a timely manner that automatically clusters tweets containing an event keyword and asks a domain expert to disambiguate event word senses and label clusters quickly. In addition, to process extremely noisy and often rather short user-generated messages, we enrich tweet representations using preceding context tweets and reply tweets in building event recognition classifiers. The evaluation on two hurricanes, Harvey and Florence, shows that using only 1-2 person-hours of human supervision, the rapidly trained weakly supervised classifiers outperform supervised classifiers trained using more than ten thousand annotated tweets created in over 50 person-hours.
Study on the basic performance of basic magnesium sulfate cement concrete
Authors: Gong Wei , Yu Hongfa , Ma Haiyan , Wang Nan , He Liang
Published: June 2020

The influence of multiple factors – namely, cement type, cement strength grade, cement content and water–binder ratio – on the basic performance, including the slump and early compressive strength, of basic magnesium sulfate (MgSO4) cement (BMSC) concrete was researched. In addition, multiple non-linear regression models of the basic performance of BMSC considering the raw materials and mix proportions were proposed. The results show that when the apparent density and water–binder ratios of BMSC were constant, the slump of BMSC increased and the early compressive strength decreased with the increase in the cement content. With the increase in the water–binder ratio, the slump of BMSC increased gradually and the early compressive strength decreased gradually. With the increase in the cement strength grade, the slump and early compressive strength values of BMSC all increased. The slump and standard cube compressive strengths of BMSC had a multiple non-linear power function relationship with the cement strength grade, cement content and water–binder ratio. When the cement content of BMSC was 530 kg/m3, the standard cube compressive strength grade of BMSC that was mixed with fly ash reached 82.7 MPa, and the standard cube compressive strength grade of BMSC that was mixed with slag reached 70.5 MPa.
A Three Year Retrospective Analysis Of Anti-Tnf Treatment Outcomes In Rheumatoid Arthritis And Ankylosing Spondylitis Patients
Authors: TEZCAN Dilek , ÜSTÜNSOY Seyfettin , KESKİN Göksal , BİLGETEKİN İrem
Published: June 2020

AbstractBackground/Aims:To
investigate the effectiveness and reliability of anti-TNF treatment in
Ankylosing Spondylitis-Rheumatoid arthritis patients.Methods:180 patients (110
Rheumatoid arthritis (RA) patients diagnosed
according to 1987 American Rheumatism Association criteria, 70 Ankylosing Spondylitis
(AS) patients diagnosed according to Modified
NewYork Criteria) admitted to the hospital for
arthritis and related compliants who were followed up and treated with anti-TNF
treatment in the department of Rheumatology&Immunology from 2009 to 2011. We
enrolled 100 patients with RA (76 women, 24 men) and
60 patients with AS (16 women, 44 men) to the study, excluded 20 patients
according to the exclusion criterias. The response of the patients to the
anti-TNF treatment was evaluated by comparing the clinical parameters BASDAI,
DAS28 and VAS score;
and laboratory measurements of erytrocyte sedimentation rate, C-reactive
protein levels
of rheumatoid arthritis and ankylosing
spondylitis before
and six months after the treatment.Results:After
the six months of anti Tnf treatment,
BASDAI score for AS, DAS28 score for RA, VAS, ESR and CRP levels for both
diseases showed a statistically significant improvement, moreover it was
determined that demographic variations did not affect these values.Conclusions: Our
results demonstrated that anti-TNF treatment is safe and effective treatment
modality in patients with Ankylosing Spondylitis and Rheumatoid arthritis.
These findings are short-term results of a study, and therefore future studies
with larger patient series and long term follow-up are needed to look at
outcomes of long term therapies.
Efectos de una intervención educativa sobre la seguridad en la autoadministración de insulina
Authors: Bastidas Sanchez Clara Victoria , Lombo Caicedo Jadith Cristina , Soto Morales Alejandra María
Published: June 2020

Introducción: Las personas con diabetes tipo 2, por lo general no requieren dosis diarias de insulina para sobrevivir. Muchas personas pueden controlar su enfermedad a través de una dieta sana y una mayor actividad física, y medicación oral, si a pesar de ello, persisten sin control glicémico, deberán usar insulina exógena.

Métodos:  Estudio cuasi-experimental desarrollado en un grupo control y grupo de intervención de los pacientes que comenzaron tratamiento con insulina en el plan de alta. Se usaron dos escalas de medición, una para la Agencia de autocuidado y la escala de seguridad en la terapia de insulina validada en Colombia.

Resultados: A nivel intergrupal, la intervención educativa convencional, utilizada en el grupo de control, no tuvo un efecto sobre la administración segura de insulina (p = 0,07). Por el contrario, la estrategia experimental aumentó el puntaje de seguridad en la administración de insulina; diferencia de medidas de 8 puntos, p = 0,0001).

Conclusiones:  Los resultados obtenidos en la presente investigación son coherentes con otras investigaciones precedentes, cabe denotar que la cantidad de pacientes osciló entre los 20 y los 32 individuos, aplicaron diferentes intervenciones educativas, así como también se midieron aspectos de conocimientos, antropométricos y clínicos. En consecuencia, la estrategia educativa “iniciando con la insulina” demostró ser efectiva al observarse el aumento de la seguridad en la administración de este medicamento en los pacientes del grupo de estudio..
Evaluación de la producción de textos académicos en un centro de escritura digital
Authors: Calle Álvarez Gerzon Yair , Chaverra-Fernández Dora Inés
Published: June 2020

En este estudio orientado al diseño e implementación de dos Centros de Escritura Digital (CED) en la Educación Media, la evaluación de la calidad de los textos escritos fue un componente clave como estrategia de acompañamiento al proceso de aprendizaje de los estudiantes y como criterio de validación sobre el funcionamiento de los CED. Este artículo producto de investigación se enfoca específicamente en presentar los resultados de la evaluación de la calidad de los textos producidos por los estudiantes en el marco de un estudio de caso intrínseco y colectivo. El instrumento utilizado fue una escala de evaluación de la calidad de la escritura académica. La muestra estuvo conformada por 23 textos, 19 de una institución educativa pública y 3 de una de carácter privado. Los resultados muestran: 1) que los doce indicadores utilizados permiten determinar la calidad escritural de un texto académico digital o analógico (alfa de Cronbach 0,822), y 2) que la escala es funcional en términos de la mediación didáctica en las actividades del CED (tutoría y talleres). En conclusión, los resultados permiten tomar decisiones frente a cómo mejorar los procesos de tutoría académica considerando los tipos de textos y los indicadores de calidad de la escritura; a su vez, la escala es una herramienta para la evaluación de las actividades de producción textual, de carácter diagnóstico, formativo, sumativo o autoevaluativo.
Violencias y resistencias en la Cárcel Modelo de Bogotá. El caso de la población LGBTI*
Authors: Silva Liévano Edilson
Published: June 2020

Este artículo de investigación presenta el análisis de contenido realizado a un conjunto de enunciados proferidos por personas asumidas bajo la noción de comunidad lgbti en el curso del proyecto de investigación “Subjetividades recluidas. Identidades gais y trans en el contexto carcelario”. Se encontró que la violencia se articula a partir de una serie de fuerzas que tejen estrategias de exclusión, negación y taponamiento; que actúa por exceso de similitud y de diferencia; que reproduce el miedo al trato, al contacto y al contagio; y estigmatiza por sinécdoque o metonimia. En relación con la resistencia, la investigación arrojó que los participantes despliegan sus fuerzas para ganar aliados en la lógica amigo-enemigo, se amparan en los marcos jurídicos, acuden a la fuerza física para defenderse, evaden situaciones conflictivas, no se dejan asimilar por el mandato de masculinidad, por el contrario, exhiben su performatividad de género; son transgresores y abren fisuras en las relaciones de poder que transitan entre las personas privadas de la libertad.
La infancia y la escuela en las voces de excombatientes
Authors: Torres Puentes Elizabeth
Published: June 2020

El presente artículo de investigación da cuenta de los resultados de la tesis doctoral titulada “Temporalidades en narrativas de excombatientes: experiencia humana de infancia y educación”, en el marco del Doctorado Interinstitucional en Educación (Colombia), particularmente, en relación con la interpretación de narrativas de excombatientes que se vincularon a grupos armados en suniñez, sus juicios acerca de la escuela antes, durante y después de su militancia. Se tuvieron en cuenta los postulados teóricos de Ricoeur (1995, 1999, 2005) sobre la relación entre temporalidad y narratividad, para el análisis de las narrativas de tres excombatientes de las FARC, ELN y AUC, respectivamente. Dicho estudio se realizó bajo la propuesta de investigación narrativa hermenéutica (PINH) desarrollada por Quintero (2018). Los resultados de la investigación dan cuenta de los juicios morales y políticos que emergen en las narrativas de estos excombatientes, y que vinculan la subjetividad que se configura a partir de la experiencia de formación y de infancia.
Um resgate histórico da psicossomática: de Freud aos pós-freudianos
Authors: Morais Jamile Luz , Nicolau Roseane Freitas
Published: June 2020

Trata-se de um recorte da dissertação de mestrado “Corpo, feminino e subjetivação: uma análise a partir de sujeitos com lúpus eritematoso sistêmico”. Objetiva sustentar a presença da psicanálise desde os primórdios dos estudos sobre psicossomática, através de um percurso histórico sobre o tema, delineando a origem deste campo de saber, bem como as principais elaborações teórico-conceituais resultantes da interlocução entre a medicina e a psicanálise. Considerando a influência de Freud para a inauguração do campo de saber denominado “psicossomático”, destacam-se principalmente as produções de Groddeck, Ferenczi, Alexander e Marty.
The therapeutic role of signifier opposition and fort-da in the treatment of a child diagnosed with autism spectrum disorder (ASD): a case report
Authors: Fernández-Alcántara Manuel , Correa Cayetana , Laynez-Rubio Carolina , Navas Juan F. , Salas Christian E , Cruz-Quintana Francisco
Published: June 2020

From a lacanian perspective interventions in cases of autism should aim to introduce a symbolic absence that mobilizes the circuit of desire. The case of a 2-year-old boy (Q) diagnosed with autism spectrum disorder attending to lacanian treatment is presented. The fort-da paradigm (using a pair of signifiers to represent the presence-absence) was introduced to address problems with attachment, communicative intention, and symbolic game. After treatment Q learned how to use his own language and symbolic game to regulate and express anxiety and other emotions in the absence of his mother.
S-synchronization Structural Identiﬁability and Identiﬁcation of Nonlinear Dynamic Systems
Authors: Karabutov N. N.
Published: June 2020

An approach to the structural identifiability analysis of nonlinear dynamic systems under uncertainty is proposed. We have shown that S-synchronization is the necessary condition for the structural identifiability of a nonlinear system. Conditions are obtained for the design of a model which identifies the nonlinear part of the system. The method is proposed for the obtaining of a set which contains the information on the nonlinear part. A class of geometric frameworks which reflect the state of the system nonlinear part is introduced. Geometrical frameworks are defined on the synthesized set. The conditions are given for the structural indistinguishability of geometric frameworks on the set of S-synchronizing inputs. Local identifiability conditions are obtained for the nonlinear part. We are shown that a non-synchronizing input gives an insignificant geometric framework. This leads to a structural non-identifiability of the system nonlinear part. The method is proposed for the estimation of the structural identifiability the nonlinear part of the system. Conditions for parametric identifiability of the system linear part are obtained. We show that the structural identifiability is the basis for the structural identification of the system. The hierarchical immersion method is proposed for the estimation of nonlinear system structural parameters. The method is used for the structural identification of a system with Bouc-Wen hysteresis.
Between Nationalism and Pragmatism: The Roma Movement in Interwar Romania
Authors: Matei Petre
Published: June 2020

In the interwar period, for the first time in their history, Romanian Roma managed to organise themselves on a modern basis, by forming Roma associations and unions, and issuing their own newspapers and programmes. In an effort to define themselves, they became politically active, claiming and negotiating rights. In my article I analyse the context of the interwar Roma movement, how Roma leaders of the time saw themselves and their movement, what programme(s) they had, and how they tried to achieve their goals. This was a serious challenge: As they were not self-sufficient, they heavily depended on support from Romanian institutions, and hence they had to act with caution in order to avoid any hostile reactions from the Romanian majority. Overall, the discourse of Roma elites in interwar Romania ranged between: 1) a national approach directed inwardly, toward the Roma, for ethnic mobilisation purposes, including calls to unite in order to acquire their rights, efforts to combat ethnic stigmatisation, discussions on ethnonyms (Gypsy vs. Roma) or on the importance of Roma in Romania and worldwide, the beginning of a national/ethnic mythology (past, origin, enslavement, heroization vs. victimization, etc.); and 2) a pragmatic approach directed outwardly, toward Romanian authorities and public opinion; rather than a national minority, Roma leaders presented the Roma as a social category with specific needs, due to their historical legacy. Of these two, throughout the interwar period, pragmatism prevailed. Special emphasis was placed on the issue of social inclusion, and on identifying specific problems and solutions (i.e., better access to education, settlement, deconstruction of prejudices, etc.).
The Oxidative Derivatization Method For The Spectrofluorimetric Determination Of Periciazine In Pharmaceutical Preparations
Authors: Blazheyevskiy M.Ye. , Scrypynets Yu.V. , Yegorova A.V. , Antonovich V.P.
Published: June 2020

The oxidative derivatization method for the indirect spectrofluorimetric determination of Periciazine has been presented. Potassium hydrogenperoxymonosulfate (Oxone ®) is proposed as a derivatizing agent for Periciazine, yielding the strongly fluorescent Periciazine sulfoxide. A highly sensitive, simple and rapid method for determination of the Periciazine by fluorescence of its oxidation product with Oxone ® solution in 0.02 M hydrochloric acid solution (λex = 364 nm; λem = 444 nm) has been developed. The calibration plot is linear in concentration range of 0.05 – 4.00 µg mL -1 . LOQ (10S) is 0.05 µg mL -1 . The possibility of quantitative determination of Periciazine in pharmaceutical preparations (Neuleptil ®, 10 mg capsules and Neuleptil ®, a 30 mL 4 % oral (solution) drops) has been shown RSD < 2.2 % (δ < RSD).
Research of Gaming Activity on Smartphones
Authors: Zharkova O.G. , Barbolina S.A. , Afonina N.M. , Volkova V.N.
Published: June 2020

This article is devoted to research of gaming activity on smartphones that took place in 2019–2020. The study has involved more than 200 people of different ages from 4 to 72 years. Respondents have answered questions about their gaming activities on smartphones. The developed questionnaire is performed in Google Forms and contains 8 questions: about age, gender, the reason for the start and continue game activity, preferred genres, the time spent on games every day, the use of online games and the cost of mobile games. The collected data helped to identify the motives for starting and continuing gaming activity on smartphones. In the study were analyzed mobile games on the iOS and Android. Analysis showed that there are relationships between genres. People who prefer a particular genre tend to choose similar genres of games. We revealed the dependence of buying games on age and time in the games every day. The older people are and the more time they spend in games every day, the more they spend money in games more willingly. Gender does not affect game activity. The choice of game genres has nothing to do with age. Such conclusions made in a research of gaming activity on smartphones.
Application of Criteria Aggregation Techniques for the Selection of Innovative Products
Authors: Sivakova T.V. , Sudakov V.A.
Published: June 2020

The peculiarity of innovative products requires taking into account a large number of criteria that should be aggregated into generalized ones and building a convolution tree with qualitative, quantitative and fuzzy rules. The paper proposes a methodology for the optimal partitioning of criteria scales into generalized gradations for using combined methods of multicriteria analysis of alternatives. The transition to fewer criteria leads to a signifi cant increase in the dimension of the scales of generalized criteria. Scales have to be converted to new scales with fewer gradations. To solve the problem of minimizing the information loss occurring when converting the scales picked Bellman function and applied method of dynamic programming. Computational experiments have shown the effectiveness of the proposed approach.
Comparative Efficiency Analysis of Linear Suboptimal Controllers for Dynamic Systems with Incomplete Measurements
Authors: Panteleev A.V. , Yakovleva A.A.
Published: June 2020

The article presents a comparative analysis of linear stationary controllers’ efficiency. Algorithms of output regulator synthesis and finding of H control are presented. A complex of programs based on the stated algorithms, which allows to find an suboptimal control of dynamic systems and to simulate the process on a stated time interval for getting full information about the ongoing process for further analysis of its stability, was developed in the MATLAB environment.
Validez jurídica y lógica deóntica
Authors: Caballero Hernández Joe , Alarcón Lora Andrés
Published: June 2020

El objetivo de esta investigación es desarrollar un concepto de validez jurídica, o validez normativa, con base en el análisis de las discusiones flosófcas jurídicas de la lógica deóntica. El estudio fue cualitativo, con una metodología analítico-descriptiva y crítico constructivista3. La investigación primero se enfocó en identifcar las principales discusiones de esa temática, las cuales son bastante complejas y nutridas. Luego se centró en los conceptos de norma y proposición jurídica para entender el desarrollo teórico de ese campo de estudio, con el objeto de verifcar las distintas posibilidades de solución de los casos jurídicos difíciles o complejos y, con esto, la necesidad de estudiar un concepto de validez jurídica. Por último, se analizó ese concepto de acuerdo con las conclusiones de todos los aportes teóricos desarrollados. A partir de esto se concluyó que es importante agregarle al concepto de validez jurídica, proveniente del positivismo jurídico, la aceptación axiológica de la norma por parte de la sociedad. En efecto, este es el elemento central de los argumentos expuestos.
Identificación de los objetivos del desarrollo sostenible-ODS- desde el planteamiento estratégico de las empresas que cotizan en la bolsa de valores de Colombia
Authors: Pérez Ortega Giovanni , Barrera del Toro Andry , Moreno Freites Zahira
Published: June 2020

Este artículo a partir del análisis de contenido del planteamiento estratégico corporativo (visión, la misión, los valores, objetivos y estrategias de la empresa), identifica cuáles objetivos del desarrollo sostenible-ODS, han sido priorizados por 23 empresas representativas que cotizan en la Bolsa de Valores de Colombia. Se presume que  las corporaciones están comprometidas con los ODS desde su planteamiento estratégico. Como resultado se encuentra que  el trabajo decente y crecimiento económico; e industria, innovación e infraestructura, son los objetivos que aparecen explícitos en dichos planteamientos, por lo que se asume mayor preocupación corporativa, y  a su vez, la vida submarina no aparece en el interés del planteamiento corporativo.
La contaminación atmosférica en el municipio de san José de Cúcuta – Colombia
Authors: Leal Esper Yamal Elías , Castiblanco Ramírez Estefanía
Published: June 2020

El presente artículo de reflexión, resalta la importancia de abordar la problemática actual de la contaminación atmosférica, pues, como ya lo vienen advirtiendo organismos nacionales e internacionales, como las Naciones Unidas y las Corporaciones Autónomas Regionales, dicha contaminación genera problemas en la salud de los seres humanos. Dado lo anterior, se muestra el marco normativo colombiano que regula el impacto ambiental generado por la industria, específicamente, con la calidad del aire, sus efectos y describe las medidas adoptadas en los Municipios, caso de San José de Cúcuta, para disminuir los niveles contaminantes de la atmósfera
Evaluación de programas de formación en tic: debates y enfoques prevalentes en la investigación educativa
Authors: Figueroa Gutiérrez Vladimir , Montes Miranda Alexander , Rodríguez Morato Ana
Published: June 2020

Este artículo hace parte de la Investigación: Resultados del programa República Digital (RD)- Educación Digital. Evaluación de programas TIC; realizada con el objetivo de identificar los resultados de la política en referencia, implementada en el sistema educativo de República Dominicana. Para lo anterior, se diseñó una metodología mixta, basada en el modelo Context, Imputs, Process & Product (CIPP), desde las variables, competencias digitales, mejoramiento de los aprendizajes, enseñanza, comunidades de aprendizaje y gestión de los centros. En este contexto, este artículo hace énfasis en el estado del arte de la investigación, enfocando las categorías teóricas competencias digitales e investigación evaluativa y su aporte a las políticas educativa en América Latina. Se puede destacar como conclusión clave del estudio la tendencia en Latinoamérica por articular estas competencias digitales en los procesos educativos contemporáneos, centrando su ejercicio en el mejoramiento de las condiciones de acceso a los recursos, la información, y la comunicación, con vínculo de todos los actores que integran el sistema, pero con limitaciones importantes en materia de formación y acompañamiento a los mismos.
"Society likes to put people into socially constructed boxes": Exploration of the liminal space through undergraduate students' reflections on disability
Authors: Kofke Marisa
Published: June 2020

As undergraduate students engage with disability studies coursework, they learn about sociocultural concepts that address issues of ableism, normalcy, equity, and inclusion of disabled people in all facets of society. A transformational ideological change in how students view disability often occurs during these courses. To further explore this phenomenon, I completed a study on the capstone course for a DS minor program at a mid-sized public university. Two research questions asked: 1) How do undergraduate students make sense of and understand disability while completing a DS course? and 2) Which pedagogical decisions made by course instructors promote undergraduate students' development of new understandings of disability? A review of the scholarship on DS pedagogy in postsecondary contexts and the transformative learning theory (Mezirow, 1990) concept of critical reflection situated how these students' perspectives shift over a semester. The weekly reflection assignment of 69 students over two semesters were coded with qualitative methods. Findings include themes related to the process of reflection unearthing realizations and identifying both problems and solutions, connecting to moral obligation. The findings explore connections to the process of reflection while the students were within the liminal space of understanding course content that contrasted their prior assumptions about disability. I discuss implications for postsecondary educational pedagogical methods to understand and utilize the liminal space while teaching DS courses.
Movements and Autopathographies
Authors: Brueggemann Brenda , Olson Elizabeth Brewer
Published: June 2020

No abstract available.CorrigendumCorrection of: https://doi.org/10.18061/dsq.v40i1.7470The authors of the editorial introduction entitled "Rhetorical and Reviewing Acts of Transformation and Cunning (on a cloudy day)" [Disability Studies Quarterly Vol. 40, No. 1, 2020] incorrectly cited the publisher for Jay Dolmage's Disability Rhetoric. The correct publisher should read: Syracuse UP. The correction notice is published in Disability Studies Quarterly Vol. 40, No. 2, 2020, https://doi.org/10.18061/dsq.v40i2.7638.
Estado del arte de la aplicación de herramientas de optimización en base al análisis de ciclo de vida en la producción de cítricos y derivados
Authors: Iñigo Martinez Maria Emilia , Arena Alejandro Pablo
Published: June 2020

Actualmente, existe un crecimiento en la demanda mundial de productos cítricos y derivados, cuyas exigencias contemplen normativas de calidad ambiental. En este sentido, la huella ambiental de producto obtenida a partir de la metodología de análisis de ciclo de vida (ACV) y su combinación con técnicas de optimización proporciona una herramienta para identificar opciones de mejora en el proceso y fijar estándares de calidad. No obstante, existen escasos estudios que apliquen la combinación de ambas metodologías. Este estudio se plantea con el objetivo de encontrar coincidencias, diferencias y lagunas en artículos científicos existentes acerca de la metodología de ACV y su aplicación en la optimización de la producción de cítricos y derivados. Por lo tanto, se realizó una revisión y selección del material científico según publicaciones que utilizaban la metodología de ACV, técnicas de optimización y la combinación de ambas metodologías. Los estudios, se evaluaron según los lineamientos de las normas ISO 14040 y 14044, productos considerados y función objetivo en el caso de los estudios de optimización. En los resultados, se pudo observar una ausencia de estas contribuciones científicas para el sector agroindustrial citrícola de la Argentina, algunos artículos no siguen ningún lineamiento sobre requerimientos de reglas de producto (ISO 14025) y las variaciones metodológicas, generan diferentes resultados lo que dificulta la comparación entre los estudios que aplican el ACV, por lo que se cree necesario que los trabajos posteriores sigan una determinada línea metodológica que permita su comparación y a su vez incrementar las investigaciones de la aplicación de esta herramienta combinada con técnicas de optimización a la agroindustria citrícola en la Argentina
Emissões de GEE evitadas em Cabo Verde: estimativa em um cenário de adoção de fontes energéticas renováveis em 2025
Authors: Coutinho Gabriel Leuzinger , Vianna João Nildo
Published: June 2020

Em 2017 Cabo Verde apresentou um plano para ter, até 2025, ao menos 50% de sua energia elétrica sendo gerada por fontes renováveis. O objetivo deste artigo é estimar as emissões de gases de efeito estufa (GEE) que seriam evitadas caso este plano seja executado. Foram verificadas quais seriam as fontes de energia renováveis mais adequadas para serem utilizadas no arquipélago. Considerou-se a avaliação do ciclo de vida (ACV) destas fontes renováveis para estimar as emissões de GEE associadas à sua utilização. Foram calculadas as emissões que seriam evitadas com a não utilização de usinas termelétricas para gerar a energia que passaria a ser fornecida por fontes renováveis no período indicado. O balanço entre as emissões evitadas e aquelas relacionadas ao ciclo de vida das energias renováveis mostrou que deixariam de ser emitidas anualmente 210,8 MtCO2eq
Agronomic performance of eight corn genotypes in two sowing periods
Authors: Oliveira Inocencio Junior , Antoniol Fontes José Roberto , Morais Ronaldo Ribeiro
Published: June 2020

Climatic factors of a region determine the critical periods of corn crop development and affect the sowing planning in order to reduce the negative effects on yield. This study aimed to evaluate the agronomic performance of eight corn genotypes and two sowing dates in the edaphoclimatic conditions of Manaus, Amazonas. Four experiments were carried out in the agricultural years 2016/2017 and 2017/2018, conducted in two sowing periods under harvest season and off-season conditions each year. The sown of the harvest season and off-season were made in October and March, respectively. The experiments were conducted in a randomized block design, with eight genotypes (four varieties - BR 106, BR 5011 Sertanejo, BRS 4103, and BRS Caimbé; and four hybrids - AG 1051, BRS 1055, BRS 3040, and BRS 3046), and four replicates evaluated in two sowing periods for each year. The data were submitted to individual variance analysis for each sowing period, joint for each year, and to the means comparison test. Corn cultivation at the Manaus region could be carried out both during the harvest season, sowing at the beginning of the rainy period (October), and in the off-season, with sowing near the end of the rainy period (March). Hybrids have higher yield potential than open-pollinated varieties for both grain and green ear cultivation, regardless of sowing, harvest, or off-season.
GREEN GDP INDICATOR: APPLICATION IN A BRAZILIAN FOUNDRY INDUSTRY (2008-2016)
Authors: Miranda Ronaldo Leão , Dos Santos Gilberto Friedenreich
Published: June 2020

The objective is to calculate the value of the green industrial PIB of a foundry in the territory of Santa Catarina and to contextualize its importance as a new methodological tool. To legitimize the objective of this study, the green GDP equation is equal to the Gross Sales Revenue (Industrial GDP) - (Depletion of Water Resources + Cost of Environmental Degradation). In this context, the depletion of natural resources corresponds to the total value of the extraction of water resources, and the cost of sectoral environmental degradation is given through the proxies of the methodology of the Industrial Pollution Projection System (IPPS) applied directly to the industrial product sector. estimate of the cost of the industrial sector studied here. Methodologically, it is an exploratory, descriptive, explanatory, bibliographic, documentary and ex post facto study. As a result, the green GDP of the foundry was lower than the industrial GDP in all the surveyed years. It is noticed that the industrial economic activity of the foundry, within these parameters of analysis, signals a loss of future sustainability, taking into account the years investigated. Therefore, in order for this particular industry to reverse this scenario, investments in technologies are necessary, in order to minimize the consumption of natural resources and consequently maximize its green GDP.
A IMPORTÂNCIA DA CONTABILIDADE AMBIENTAL PARA AS EMPRESAS
Authors: Moreira Rafael Da Silva , Brito Elói Jesus de , Lima Renato Abreu
Published: June 2020

É fato que o meio ambiente tem sido alvo de muita polêmica atualmente, tendo em vista a grande repercussão que tem causado os impactos ambientais. A concorrência faz com que as organizações se movimentem em prol de um desenvolvimento sustentável considerando que as pessoas tendem a optar por empresas que não degradem o meio ambiente. Sob esta concepção destaca-se que a contabilidade ao contrário do que muitos pensam tem várias funções e é muito útil no que se refere a questões ambientais. Dentro deste contexto afirma-se, o que incentivou a contabilidade voltada para o meio ambiente, foram os inúmeros problemas ligados às questões ambientais. Sendo assim, o objetivo deste trabalho foi analisar a importância da contabilidade ambiental para as empresas e como a contabilidade pode contribuir com a preservação através de sua aplicação e os procedimentos contábeis utilizados. A pesquisa foi realizada através do método de pesquisa bibliográfica e qualitativa, no qual foram identificados vários autores importantes para a fundamentação teórica desta obra. Os resultados esperados por esta pesquisa foram todos alcançados, considerando que todos os questionamentos foram respondidos destacando a importância da relação harmoniosa entre as empresas e o meio ambiente e a utilização da contabilidade ambiental como ferramenta para que esta harmonia aconteça. Tais impactos ambientais são frutos de uma má administração, o que faz com que a contabilidade juntamente com a administração tome providências que visem à união do desenvolvimento empresarial com o meio ambiente, de forma para que a empresa cresça de maneira sustentável. Sendo assim, este trabalho mostrou a relevância da contabilidade ambiental dentro das empresas e também destacar como a contabilidade ambiental pode contribuir para a preservação do meio ambiente.
Patterns of and Reasons for Permanent Tooth Extractions in a Saudi Population
Authors: Al-Safadi Rahaf , Al-Safadi Riham , Al-Lahim Abdulrahman , Al-Bander Wejdan , Al-Masloukh Muhammad , Shami Mohammed , Al-Harthi Faiz , Al-Ramdan Ghofran , Al-Saif Ibtihal
Published: June 2020

Aim: The aim of this study was to detect the patterns of and reasons for permanent tooth extractions in aSaudi population in the Kingdom of Saudi Arabia.Materials and Methods: 557 Saudi patients aged ≥10 years residing in the Kingdom of Saudi Arabia withat least one permanent tooth extracted or diagnosed for extraction were randomly selected. One reason foreach tooth was documented whether by asking the patient why his/her tooth was extracted or by clinical andradiographic examination. The data obtained were documented in a patient examination form thenstatistically analyzed using Chi-Square Test or Fisher-Freeman-Halton Test and T-Test.Results: The highest percentage of tooth extractions was observed in the age group 10-29 years (36%).Tooth extractions due to caries were more in females compared with males, but they due to periodontaldisease were more in males compared with females. There was a significant relationship between thereasons for tooth extractions and the extracted teeth types p <0.05, so caries was (66.4%), followed byeruption problems (17.5%), periodontal disease (7.1%), orthodontics (5%), prosthodontics (1.9%),pericoronitis (1.6%), and trauma (0.5%); also, the most frequently extracted tooth type was the molars(75.7%), followed by premolars (18.1%), and anterior teeth (6.2%); mandibular and maxillary third molarswere the most frequently extracted teeth (19.9%) and (19.5%), followed by the mandibular and maxillaryfirst molars (13.3%) and (8.4%), respectively; however, the least frequently extracted teeth were themandibular canines (0.7%), followed by the maxillary lateral incisors (0.9%). Of all teeth types, premolarswere the most commonly extracted teeth due to orthodontics, and mandibular anterior teeth were the leastfrequently extracted teeth due to caries. Caries was the main reason for tooth extractions in all age groups.Tooth extractions due to caries, eruption problems, and orthodontics were more in patients≤ 40 years thanin patients > 40 years; however, tooth extractions due to periodontal disease were more in patients > 40years than in patients ≤ 40 years.Conclusion: Caries is epidemic; it’s advised to intensify efforts towards dental sealants and fluorideapplication with implementing dental preventive and educational programs in order to raise the publicawareness of oral hygiene instructions and natural dentition.