bluuebunny/crossref_metadata_2025 huggingface dataset:
Teaching in English across the Curriculum: A Lived Experiences of the Novice Teachers in A Selected Rural Fet Schools in South Africa
Authors: Mncube Dumisani W. , Mkhasibe Rachel Gugu , Ajani Oluwatoyin Ayodele
Published: June 2021

Novice teachers’ use of English as the medium of instruction in curriculum delivery across all subjects in rural South African schools is the focus of this study. The duration of their entry into the profession as Post Graduate Certificate in Education holders is short and does not capacitate them enough, thus, making them weak and inexperienced, with a high degree of professionalism, especially at the commencement of their careers. This study investigates the lived experiences of selected novice rural teachers on the tasks of teaching in English across all subjects in the rural schools. Fifteen participants from 15 high schools were purposively selected from 15 different rural high schools from King Cetshwayo District, KwaZulu-Natal province in South Africa. The participants were engaged in a focus group discussion as well as classroom observations of these teachers for data collection. Data analysis for this qualitative study was thematically analysed to generate themes for the presentation and discussion of findings. Theories of the Skills Acquisition Theory (SAT) and the Second Language (L2) Comprehensible Input through Teacher Talk Theory (CITTT) were adopted as theoretical frameworks to underpin the phenomenon. Various novice teachers find it difficult to teach across all subjects, using English as the medium of instruction in many rural schools in South Africa. Findings indicated that the educational backgrounds of learners hinder teachers’ use of English to teach them meaningfully. As observed during various classroom observations, teachers also found it convenient to use indigenous languages to deliver lesson content or communicate to these learners in the classrooms during lessons. Findings also revealed that some teachers struggled to express themselves in English due to their educational backgrounds as well. The study, therefore, recommends that teachers during their pre-service education should be well-groomed in English and this should be promoted during their teaching practice in both rural and urban. Various teacher education institutions should be encouraged to deliver curriculum contents/modules to the pre-service teachers in English across all modules.
Strategies for innovative teaching and learning Part III: Connecting with students from a distance
Authors: Bantz Diana , Thomas Cynthia M. , McIntosh Constance E.
Published: June 2021

The third article in a three-part series discusses ways to enhance communication with students and promote connectedness when delivering a distance online course. Students in distance programs may have feelings of not being connected to the instructor and peers leading to dissatisfaction and isolation. Methods of how the instructor can promote an environment of connectedness through the use of announcements, video conferencing, video updates, scheduled phone calls, and office hours will be discussed. The first paper discussed the history of distance learning, the positives and negatives of online learning, advantages and disadvantages of online learning, and the initial considerations for establishing online courses. The second paper delved into understanding of the learning platform, developing a course model, creating individual assignment rubrics for courses, requiring active participation from both instructor and students, and setting-up quality communication.
Ontslag van een familielid als vertegenwoordiger van de cliënt op verzoek van de zorginstelling
Authors: Garvelink S.E.
Published: June 2021

Ontslag van een familielid als vertegenwoordiger van de cliënt op verzoek van de zorginstelling

Sinds 2014 kunnen zorginstellingen de rechter vragen een vertegenwoordiger voor een cliënt te benoemen of te ontslaan. Het is niet de bedoeling dat een instelling die bevoegdheid aangrijpt om kritische familie buitenspel te zetten. Soms kan er echter sprake zijn van een vastgelopen situatie waarin de instelling weinig andere opties heeft.
De regiebehandelaar
Authors: de Haan F.H.
Published: June 2021

De regiebehandelaar

Met het oog op de kwaliteit van zorg heeft het CTG een aantal verantwoordelijkheden rond samenwerking in de zorg geherdefinieerd. ‘Exit hoofdbehandelaar, enter regiebehandelaar.’ De ervaren onduidelijkheden over verantwoordelijkheidsverdeling nemen hierdoor slechts ten dele af. De Wkkgz zou hier een grotere rol moeten spelen dan de Wet BIG.
«The Yellow Wallpaper»: algunas consideraciones sobre el doble subjetivo femenino
Authors: Bono Velilla Rosa
Published: June 2021

De los abundantes estudios que abordan la contribución al feminismo de «The Yellow Wallpaper» (Charlotte Perkins Gilman, 1892), apenas alguno presta especial atención al tema del doble más allá de su tratamiento clínico de la enajenación. Este artículo plantea algunas reflexiones respecto al tratamiento literario de la identidad femenina mediante el uso del doble. La aproximación de Jourde y Tortonese (1996) permite una distinción esencial por cuanto considera un rasgo de género interesante: el desdoblamiento femenino suele ser externo u objetivo. El doble subjetivo casi nunca está encarnado por mujeres. El recurso del doble subjetivo femenino, apartado del discurso canónico de la exploración del individuo moderno en este y otros textos que aquí se consideran, ha de dedicarse a indagar y construir su propia identidad: su voz no puede hablar por el conjunto de las inquietudes humanas sino solo por la suya en tanto que mujer.
Prestaciones para la conciliación de la vida laboral y familiar: una revisión de su diseño e impacto en los países de la OCDE
Authors: Domínguez-Olabide Peru
Published: June 2021

Las políticas de apoyo a las familias con hijos/asresultan fundamentales para la adecuación del sistema de protección social al paradigma de la inversión social. En el marco de estas políticas, las prestaciones de apoyo a la conciliación se constituyen como uno de los pilares fundamentales. Orientadas a impulsar una participación equilibrada entre mujeres y hombres en la vida familiar y en el mercado de trabajo, estas prestaciones se posicionan como herramienta para avanzar en la igualdad de oportunidades en el empleo, romper conlos roles y estereotipos tradicionales de género, y cubrir las necesidades de atención y cuidado de los niños/as. Este trabajo realiza una aproximación exploratoria a estas prestaciones. Primero, se realiza una revisión de la literatura académica, presentando las principales evidencias acerca de los impactos de estas prestaciones sobre distintas dimensiones. Seguidamente, se describen las principales formas de estructuración de estas prestaciones en el ámbito internacional.
Capacitismo, covid-19 y dignidad: derecho a la salud e inclusión en tiempos de pandemia
Authors: Aparicio Payá Manuel , Toboso Martín Mario
Published: June 2021

La crisis de salud pública provocada por la pandemia causada por la covid-19 se ha convertido en una crisis de derechos humanos que ha afectado injustamente a personas con diversidad funcional y a personas ancianas. En este trabajo consideramos que en el subsuelo de esta última crisis encontramos la intersección entre el prejuicio capacitista y el prejuicio edadista. En una primera parte, después de definir el capacitismo, realizamos una crítica normativa de la exclusión ex ante de la asistencia sanitaria de estos grupos sociales. Defendemos el punto de vista del universalismo igualitario subyacente en la idea de dignidad, fundamento de los derechos humanos y de una bioética centrada en ellos. Finalmente, abordamos el proceder inclusivo frente a la pandemia, tanto desde el punto de vista de la justicia de la práctica sanitaria como desde el punto de vista, más amplio, de la justicia social.
El asistente personal como trabajador/a: su implantación en España
Authors: Báñez Tomasa , Comas d’Argemir Dolors
Published: June 2021

Este artículo analiza la implantación de la asistencia personal en España. Mediante una metodología cualitativa, se analizan las contradicciones surgidas en las prácticas cotidianas en dos dimensiones que actúan a nivel estructural: las tensiones entre el derecho a decidir de las personas con diversidad funcional y los derechos laborales de los y las asistentes personales, así como controversias respecto a su profesionalización. El análisis muestra que la debilidad y escasa financiación de las políticas sociales orientadas al cuidado contextualizan estas tensiones y constituyen un obstáculo para garantizar los derechos de las personas con diversidad funcional y los de las trabajadoras/es. La novedad y aporte de este artículo es situar en un mismo nivel las perspectivas y experiencias de asistentes personales, usuarios/as y gestores de servicios. Entender mejor la especificidad del trabajo de los asistentes personales y la necesidad de consolidar esta figura profesional redunda en beneficio de las personas con diversidad funcional para hacer posible una vida independiente.
Una revisión a la especial vulnerabilidad del menor con discapacidad
Authors: Díaz Domínguez Pablo
Published: June 2021

El presente artículo supone una breve revisión, desde un punto de vista socio-jurídico, de la especial vulnerabilidad e interseccionalidad que afecta a dos colectivos de personas que, a juicio del autor, deben ser objeto de una específica protección jurídica: las personas menores de edad y las personas con discapacidad. Sobre esta especial vulnerabilidad que les diferencia de sus pares sin ella, surge la necesidad de identificar un sujeto de derecho independiente sobre el cual establecer una autónoma protección jurídica: el menor con discapacidad. Se expondrán los motivos y razonamientos socio-jurídicos que, a nuestro entender, justifican la necesidad de crear una configuración legislativa unitaria, inexistente hasta la fecha, que englobe la protección jurídica conjunta de un colectivo específico y doblemente vulnerable, y que a día de hoy tiene sus derechos reconocidos de forma dispersa, residual, e incluso inconexa, lo que dificulta el ejercicio efectivo y práctico de los mismos.
Efecto del confinamiento COVID-19 sobre la composición corporal en residentes con discapacidad intelectual
Authors: Gutiérrez-Cruz Carmen , Muñoz-López Saray , Román-Espinaco Andrés
Published: June 2021

El propósito de este estudio ha sido comprobar el efecto del confinamiento COVID-19 durante 17 semanas sobre el grado actividad física y la composición corporal de las personas residentes con discapacidad intelectual. Se ha utilizado un diseño intragrupo de medidas repetidas pre y post confinamiento. Han participado 42 personas adultas con diferentes grados de discapacidad intelectual. Para evaluar el grado de actividad física se ha utilizado el Global Physical Activity Questionnaire (GPAQ) y para el análisis de composición corporal la bioimpedancia eléctrica (InBody-230). Los resultados indican que durante el confinamiento ha existido una reducción media del 89 % en todos los valores de actividad física y un incremento del 28 % de los hábitos sedentarios (p<0.001). Se ha producido una pérdida generalizada de masa muscular (2.5 %; p<0.01), lo que podría interpretarse como una sarcopenia temporal forzada. Como conclusión, se pone de manifiesto la importancia de los programas de actividad física en este colectivo.
Una aproximación entre la psicología positiva y el apoyo conductual positivo
Authors: Forteza Bauzá Sebastià , Ferretjans Moranta Vicenç , Vilardebó Perxachs Elisabeth
Published: June 2021

La psicología positiva y el apoyo conductual positivo tienen orígenes diferentes; sin embargo, abordan objetivos similares. En este trabajo se describe la psicología positiva y el apoyo conductual positivo, así como algunas visiones críticas. Posteriormente, a través de Carr, un pionero del apoyo conductual positivo, se aborda el acercamiento entre ambos modelos. Por su parte, la psicología positiva está incluyendo a las personas con discapacidad, según dos manuales de psicología positiva y discapacidad; anteriormente, según éstos, las personas con discapacidad no estaban incluidas en el modelo. Por otra parte, también se describen las teorías de dos autores, Wrigth (2005) y Pinker (2012), que explican la evolución de la sociedad actual hacia los valores positivos. En parte, esta evolución explica la buena acogida de las psicologías positivas. Finalmente, la visión contextual y social podría ser la principal aportación del apoyo conductual positivo a la positividad. Los cambios de entornos y las relaciones sociales han sido temas centrales para el apoyo conductual positivo; sin duda, para la psicología positiva también, no obstante, su principal aportación se centra en los factores intrapsíquicos.
Desde el margen. Una propuesta educativa para el ejercicio de los derechos sexuales y derechos reproductivos en mujeres jóvenes con discapacidad
Authors: Giangiacomo Marina
Published: June 2021

Giangiacomo, M. (2020). Desde el margen. Una propuesta educativa para el ejercicio de los derechos sexuales y derechos reproductivos en mujeres jóvenes con discapacidad. Revista Española de Discapacidad, 9(1), pp. 247-259.
Anticipating corporate’s distresses
Authors: Barboza Flávio Luiz De Moraes , Duarte Denize Lemos , Cunha Michele Aparecida
Published: June 2021

O objetivo deste estudo é apresentar um modelo de previsão de Dificuldades Financeiras (DF) a partir da perspectiva das técnicas de aprendizado de máquina (TAMs). Aplicamos e comparamos os modelos XGBoost, Random Forest e Regressão Logística usando indicadores financeiros para buscar melhores previsões das DFs um ano antes do evento em empresas latino-americanas no período de 2000 a 2017. Nossos resultados mostraram que as TAMs superam o modelo de logit, atingindo uma precisão geral de 96 % (XGboost). Além disso, cinco indicadores foram relevantes para o seu sucesso. O estudo amplia o conhecimento e as discussões ao enfocar o poder preditivo na comparação entre os modelos, destacando os benefícios do uso de algoritmos aplicados à pesquisa financeira. Auxilia na gestão de riscos, na prevenção de perdas, permitindo maior equilíbrio e saúde para o sistema financeiro’, que contribui para o desenvolvimento econômico, social e sustentável de uma sociedade.
End-of-Life Options Act Fails to Protect Conscience Rights
Authors: Kubick Andrew S. ,   The National Catholic Bioethics Center
Published: June 2021

In March 2021, New Mexico became the ninth state to legalize physician-assisted suicide. This practice, which allows medical professionals to aid in the intentional death of their patients, is counter to Catholic teaching. As such, it raises concerns regarding the conscience rights of Catholic physicians, as well as physicians who are morally opposed to the practice. In particular, while there ostensibly are protections for those who object, the requirement for physicians unwilling to aid in the deaths of their patients to refer said patients to physicians who will, essentially compels individuals to participate in an act that is intrinsically evil.
Embryo Adoption and the Extended Inseparability Argument
Authors: Austriaco Nicanor Pier Giorgio ,   The National Catholic Bioethics Center
Published: June 2021

The Catholic debate over embryo adoption is at a genuine impasse awaiting resolution from the magisterium of the Catholic Church because both sides have reached a point where there is a fundamental disagreement. Several Catholic ethicists have argued that the ethical reasoning linking the acts of having sex and of making a baby, and therefore reserving both to the causality of a husband, should be extended to the act of becoming pregnant. This would rule out embryo transfer in all its manifestations. However, this dispute cannot be resolved by further argumentation, but requires authoritative definition in response to the question, Should the principle of inseparability be extended to the act of becoming pregnant?
Motherhood as a Sacrificial Self-Gift
Authors: Dugan Barbara ,   The National Catholic Bioethics Center
Published: June 2021

This essay argues against Charles Camosy’s proposal, found in his book Beyond the Abortion Wars, for premature induction of labor in a mother whose child is diagnosed with a life-limiting disease, such as Potter syndrome. This proposal is critiqued within the context of motherhood as sacrificial self-gift, which has been raised to new heights by the Incarnation and Resurrection of Christ, as witnessed by the motherhood of Mary.
Extended Memory
Authors: Juchniewicz Natalia ,   Philosophy Documentation Center
Published: June 2021

This article raises the problem of extended memory in the context of using a smartphone. Taking into account the extended mind hypothesis and the everyday practices of smartphone users, the article analyses four fields of memory: pictures, chats, maps and, geolocating games. Each of these fields can be used in a number of ways to reinforce memory or to participate in the memory practices of an individual or a collectivity, and this is analysed in the article using numerous examples. The problem of extended memory is considered in the article on a theoretical level by referring to new media studies (on mobile phones and iPhones). The practical dimension of this problem is presented by the results of empirical, qualitative research conducted among smartphone users.
Copyright issues in Archives
Authors: Kampen Andrea
Published: June 2021

The purpose of this paper is to examine the policy process, the stakeholders, the individual policies, the public debate, and the impact that copyright, specifically fair dealing, has on access to and interaction (i.e. use) with audiovisual digital archival content in an academic archive in Canada. The paper takes a preliminary look at Canadian copyright act and the copyright modernization act as well as differences between fair use and fair dealing. It then outlines two of possible applications of the copyright act in archives by looking at digital watermarks and take-down policies.
Bibliotherapy: How Public Libraries can Support their Communities’ Mental Health
Authors: McCaffrey Keri
Published: June 2021

Bibliotherapy is the act of reading a book to aid a mental illness. Although bibliotherapy is commonly practiced in a controlled study, it should be expanded and implemented into public libraries in a way that the public can take bibliotherapy into their own hands. In this paper, bibliotherapy’s effectiveness is looked at through both psychology tests, and online public opinion. Also, its execution in public libraries is discussed, and better ways to implement bibliotherapy are suggested through articles. Overall, public libraries can take an active role in their community’s mental health by providing them tools in the way of books to allow them to explore, understand, and potentially better their emotions or actions.
Improved protocol for natural convection pumpkin drying
Authors: Semai Hakim , Bouhdjar Amor , Amari Aissa
Published: June 2021

The most effective way to preserve agricultural product is drying. However, vegetable drying is an energy-consuming procedure. Convective drying is the mode considered in this work. The study intends to explore a new way of pumpkin drying, which reduces drying time and minimizes heat consumption. The study considers pumpkin thin slices and pumpkin samples with cubic shape. The samples were subjected to free convection airflow at different temperatures (40 °C, 46 °C, 52 °C, and 60 °C) for each run. A varying airflow temperature was also considered. Airflow velocity was generated by buoyancy forces for each temperature. Drying curves were plotted and fitted to the widely used thin-layer drying models. The modified Page model came out as the best-fitted model. The effective diffusivity coefficient was determined for each case using the slope moisture curve.  It appeared that diffusivity was high and drying time was short, for high temperature. Drying processes for slice configuration and cube configuration showed that the latter was more efficient. When applying the regime of increasing temperatures to the cubic samples, data analysis showed that effective diffusivity was higher during the third step in comparison to all the other drying temperatures and the total drying time was similar to that obtained at drying regime on high temperature. With this procedure, the final consumed energy was much less and the time was shorter.
Bifilar Suspension Measurement of Keelboat Inertia Parameters
Authors: Hinrichsen Peter
Published: June 2021

Measurements of the inertia parameters of a keelboat hull using a bifilar suspension are described. Bifilar yaw moment measurement normally entails accurate measurement of the length l and spacing 2d of the suspension, and of Ty the period of pure yaw oscillation1. The primary difficulty with a bifilar suspension is avoiding unwanted modes of oscillation, specifically sway when measuring yaw.

However, for an athwartships suspension the sway motion is that of a simple pendulum of period Ts and observation of the combined motion allows the yaw gyradius to be determined as ky = (Ty/Ts)d. Thus only the ratio of the periods and the suspension spacing need be measured. Measurements of the normal mode periods of the double pendulum motion when the suspension is displaced in heave allows the height of the center of mass and the pitch gyradius kp to be determined. Repeating yaw measurements with the hull tilted, and then with the bifilar suspension fore and aft to measure the roll gyradius kr, allow the angle ψ _of the inertia ellipse principal x axis to the hull x axis to be calculated.
Mainsail Planform Optimization For IRC 52 Using Fluid Structure
Interaction
Authors: Ranzenbach Robert , Armitage Dave , Carrau Adolfo
Published: June 2021

Most IRC 52 based upon existing TP52 retain their original rig proportions and mainsail girths to avoid the cost and disruption of a rig change and to not disturb he finely tuned yaw balance. It is not obvious whether the mainsail proportions essentially dictated by the TP52 box rule (aggressively square topped mainsails) are actually optimal under IRC even though IRC 52 with TP52 style mainsails tend to successfully compete under IRC. To determine the answer to this question, a mainsail planform investigation was performed as collaboration between Botin Partners and Quantum Sail Design Group.

The mainsail planform investigation utilized a Fluid Structure Interaction (FSI) program developed by Quantum Sail Design Group (QSDG) known as IQ Technology (IQT) that consists of sail geometry definition, inviscid Computational Fluid Dynamics (CFD), Finite Element Analysis (FEA), Velocity Prediction Program (VPP), and shape validation (based upon VSPARS) modules. Applicability of the inviscid CFD was validated by comparison to a limited number of viscous flow solutions, i.e. RANS analysis, performed by Porto Ricerca.

Two mainsails were considered, a conventional TP52 style and an alternative that was chosen to be closer to the IRC default girth values. To maintain sail area and yaw balance, the alternative mainsail had a longer P and E. The focus of the study was exclusively on upwind performance, i.e. to maximize upwind Velocity Made Good (VMG).

Results from the study suggest that a TP52 style mainsail is not optimal under IRC. The combination of rating reduction and predicted performance advantages over a wide range of wind speeds suggest that an alternative mainsail with larger P and E with girth values closer to the IRC default values is a superior choice for an IRC 52.
CINÉTICA DE SECAGEM E PROPRIEDADES DE COZIMENTO DE MASSA DE ARROZ
Authors: Bona Fernanda Suzana de , Biz Ana Paula , Cavalheiro Darlene , Vaz Cleiton , Sehn Georgia Ane Raquel
Published: June 2021

A produção de massas alimentícias gluten free é um desafio para a indústria de alimentos, pois busca-se substituir a rede de glúten formada pelas proteínas do trigo por outras fontes de cereais sem glúten, visando produtos finais com qualidade tecnológica. O objetivo deste estudo foi produzir massas alimentícias a base arroz, secas em baixa (60 °C) e alta temperatura (100 °C), e avaliar a melhor formulação com base nas propriedades de cozimento e textura.  Foram desenvolvidas cinco formulações de massas alimentícias com diferentes proporções de farinha e amido de arroz (F:A): 100:0, 75:25, 50:50, 25:75, 0:100. As curvas de secagem foram obtidas e diferentes modelos matemáticos, amplamente utilizados na secagem de cereais, foram ajustados aos dados. Em relação à cinética de secagem, os modelos matemáticos de Midilli e Page apresentaram a melhor correlação com os dados experimentais (R²>0,94). Massas com maiores proporções de farinha de arroz apresentaram menores tempos de cozimento e maiores firmezas. As amostras secas a 100 °C apresentaram as menores perdas de sólidos na água de cozimento, sendo esse um parâmetro importante para definir a qualidade das massas alimentícias. A partir dos resultados obtidos observou-se que para fins de produção de massas glúten free base arroz, as formulações com proporções de farinha e amido de arroz 75:25 e 50:50 secas em alta temperatura (100 °C) e com 100% de farinha de arroz seca a baixa temperatura (60 °C) seriam as mais indicadas.
FRUIT BIER: UMA ALTERNATIVA NA PRODUÇÃO DE CERVEJAS REGIONAIS
Authors: Silva Natalia Schmitz Ribeiro da , Santa Osmar Roberto Dalla
Published: June 2021

O ramo das cervejas artesanais tem crescido muito nos últimos anos, despertando a uma utilização imensa de novos adjuntos, que buscam valorizar e enaltecer esse tipo de bebida. Estão sendo produzidos vários estilos onde são adicionadas diversas frutas e outras partes vegetais, visando obter um produto com características peculiares. Os frutos da guabiroba são muito nutritivos e aromáticos, também apresentam características favoráveis ao seu uso na indústria alimentícia e de bebidas. Neste escopo, o presente trabalho teve como objetivo produzir cerveja com a adição de guabiroba em sua formulação. Neste estudo foram produzidas cervejas artesanais com adição de polpa de guabiroba em três concentrações diferentes. As cervejas produzidas foram caracterizadas em relação ao teor alcoólico, pH, acidez total, sólidos solúveis e extrato real. Pelos resultados obtidos verificou-se que o processo fermentativo ocorreu de forma adequada, levando a atenuação do mosto conforme planejado para o estilo produzido. Em relação aos parâmetros avaliados, constatou-se que, a utilização de guabiroba na produção de cerveja pode ser mais uma alternativa para obter uma cerveja com características específicas, contribuindo assim, para diversificar a oferta de cervejas artesanais aos apreciadores desses produtos, bem como, com o desenvolvimento das microcervejarias regionais.
ANÁLISE DE COMPONENTES PRINCIPAIS (ACPs) E REGRESSÃO AO MODELO DE WEIBULL NA PREDIÇÃO DE VIDA DE PRATELEIRA DE ALFACE CRESPA HIDROPÔNICA
Authors: Schmitz Fernanda Raquel Wust , Almeida Júnior Juscelino , Angioletti Betina Louise , Carvalho Lisiane Fernandes , Bertoli Sávio Leandro , Souza Carolina Krebs de
Published: June 2021

A conservação refrigerada de vegetais é temática discutida mundialmente dada a necessidade de estabelecer condições ideais de armazenamento de alimentos frescos. Desta forma, este estudo tem como escopo avaliar a estabilidade físico-química e sensorial de alface crespa hidropônica (Lactuca sativa L.) armazenada durante 14 dias a temperaturas de refrigeração de 2 °C, 6 °C e 10 °C (±1 °C), acondicionada em embalagem de poliestireno expandido (EPS) envolta com filme de policloreto de vinila (PVC). Os seguintes parâmetros são analisados: perda de massa, clorofila total, alteração de cor, aspecto murcho, escurecimento de bordas e escurecimento da nervura central. As melhores condições de armazenamento são determinadas através do teste de Tukey a 5% de significância estatística. A Análise de Componentes Principais (ACP) é utilizada para determinar os atributos de qualidade que apresentam variação mais significativa no período de armazenamento. Para estimar a vida de prateleira, os componentes principais (CPs) são regredidos a um modelo Weibulliano. De acordo com o teste de Tukey, as melhores condições de armazenamento são 2 °C e 6 °C. Ao estimar a vida de prateleira utilizando-se o modelo Weibulliano obtém-se 12,43 dias de vida de prateleira para o armazenamento refrigerado a 2 °C; 8,76 dias a 6 °C e 9,87 dias a 10 °C. Os resultados obtidos com o modelo apresentaram coeficientes de regressão de 0,94 para a temperatura de armazenamento de 2 °C, 0,98 para 6 °C e 0,99 para 10 °C.
THE FATE OF MARKETING LOGISTICS IN THE CONDITIONS OF THE 4.0. REVOLUTION
Authors: Milosavljević Srđan
Published: June 2021

The products of human inginuity of the Fourth Industrial Revolution provide the opportunity for those already fortunate enough to enjoy the advantages of previous Industrial Revolutions to shape, not only the design of new technologies, but also agile forms of management and extraordinary benefits that can fundamentally transform the way people live, work, communicate and relate to each other. More powerful technologies dramatically modify not only traditional production models, but also conventional ways of „delivery service” and distribution of the value. The implementation of the latest technological advances, primarily in the form of RFID technology, which is designed to provide continuous communication and „refresh” data in the entire supply chain in real-time, will result in raising the quality of logistics services to a higher level while simultaneously significantly rationalizing and controlling costs. There is a growing trend in increased use of robotic manipulators and RFID-based smart shelves and smart factories, and retail stores without sales staff which eliminate the need to read and pay for products at cash registers are on the horizon. The revolutionary changes in marketing logistics are conditioned by the emergence and increasing use of multidimensional, so-called 3D printing that has the potential to initiate a trend towards approaching consumption production, which would significantly modify the current role of marketing logistics in the entire supply-chain. New technologies have not changed the essential role of marketing logistics, but the establishment of consistency in the physical movement of goods has evolved over time to the level of science-fiction. Logically, we impose the question of the fate of marketing logistics in the conditions of the 4.0. Revolution, as well as a much more serious question of the future of Man in the event that the humanoid machines made „in the image of man”, insensitive to the destiny of mankind, „master” the World.
ОРГАНИЗАЦИОНЕ СТРУКТУРЕ УТЕМЕЉЕНЕ НА ИНФОРМАЦИОНОЈ ТЕХНОЛОГИЈИ
Authors: Ристовска Андријана , Бардарова Снежана
Published: June 2021

Нове организациске структуре које се заснивају на информатици, су нови организациони модели који користи технологију за динамично повезивање људи, ресурса и идеја. То јест, суштина мреже предузећа, која ствара могућности и ризике производа и услуга, а таква приврженост виртуелној организацији нема граница. За успех концепта неопходно је: узајамно поверење, висока технологија, као и тежња ка одличним перформансама и савршеном задовољењу потреба купаца. Данас, компаније не могу себи дозволити да раде за себе, и на тај начин добијају могућност да се оријентишу према својој основној стратегији, тј. његово остварење и комбиновање са основним стратегијама других предузећа. Систем који треба да подрже државне структуре у Републици Севернoj Македонији, посебно у правном регулисању закључивања споразума и праћењу реализације споразума у виртуелној организацији, што је њен најважнији део. Уз ефикасност и брзину македонског правосуђа, треба бити опрезан у имплементацији организације.
First-principles study of ultrafast spin dynamics in FemB20 (m = 1, 2) clusters
Authors: Lu Xin , Xie Meng-Lin , Liu Jing , Jin Wei , Li Chun , Georgios Lefkidis , Wolfgang Hübner ,   School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China,   School of Physics, Beihang University, Beijing 100191, China,   Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern 67653, Germany,   School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an 710072, China
Published: June 2021

In this study, we use first-principles calculations to investigate the geometry, the electronic and the magnetic structure as well as to propose the laser-induced ultrafast spin dynamics on the tubular FeB20 and Fe2B20 clusters. Our results show that the FeB20 is a stable configuration when its Fe atom gets preferably adsorbed inside the B20 tube, while the Fe2B20 is more stable configuration when one of its two Fe atoms is located inside and the other outside the boron tube. In the latter cluster, due to the higher number of d states introduced by the additional magnetic atom, the density-of-states in the low-energy region becomes higher, thus leading to richer spin dynamics. The different local geometries of the two Fe atoms lead to a multitude of many-body states with high degree of spin-density localization. Based on the calculated ground state and excited states and by using suitably tailored laser pulses we achieve ultrafast spin-flip and spin crossover scenarios for both structures. Besides, the spin-flips reach a high fidelity (above 89.7%) and are reversible, while the crossovers have lower fidelity (below 78%) and are irreversible. We also propose an ultrafast spin-transfer process from Fe2 to Fe1 for Fe2B20. The present investigation, in which we predict various ultrafast spin dynamic taken by magnetic atoms absorbed inside and outside of tubular boron clusters, is expected to provide significant theoretical guidance for the future experimental implementation and the potential applications of the relevant spin logic functional devices.
Sums of powers of integers and hyperharmonic numbers
Authors: Cereceda José Luis
Published: June 2021

In this paper, we obtain a new formula for the sums of k-th powers of the first n positive integers, Sk(n), that involves the hyperharmonic numbers and the Stirling numbers of the second kind. Then, using an explicit representation for the hyperharmonic numbers, we generalize this formula to the sums of powers of an arbitrary arithmetic progression. Furthermore, we express the Bernoulli polynomials in terms of hyperharmonic polynomials and Stirling numbers of the second kind. Finally, we extend the obtained formula for Sk(n) to negative values of n.
Some identities of generalized Tribonacci and Jacobsthal polynomials
Authors:   Faculty of Mathematics, University of Youcef Benkhedda Algiers 01, Hamdi Abdeldjabar , Badidja Salim ,   Faculty of Mathematics, University of Kasdi Merbah
Published: June 2021

In this study, we denote $(t'_{n}(x))_{n\in \mathbb{N}}$ the generalized Tribonacci polynomials, which are defined by $t'_{n}(x)=x^{2}t'_{n-1}(x)+xt'_{n-2}(x)+t'_{n-3}(x), n \geqslant 4,$ with $t_{1}(x)=a, t_{2}(x)=b, t_{3}(x)=cx^{2}$ and we drive an explicit formula of $(t'_{n}(x))_{n\in \mathbb{N}}$ in terms of their coefficients $T'(n,j)$, Also, we establish some properties of $(t_{n}(x))_{n\in \mathbb{N}}$. Similarly, we study the Jacobsthal polynomials $(J_{n}(x))_{n\in \mathbb{N}}$, where $J_{n}(x)=J_{n-1}(x)+x J_{n-2}(x)+ x^{2} J_{n-3}(x), n \geqslant 4$, with $J_{1}(x)= J_{2}(x)=1, J_{3}(x)=x+1$ and describe some properties.
Classifying Galois groups of an orthogonal family of quartic polynomials
Authors:   Department of Mathematics, Indian Institute of Technology, Hyderabad, Banerjee Pradipto , Bera Ranjan ,   Department of Mathematics, Indian Institute of Technology, Hyderabad
Published: June 2021

We consider the quartic generalized Laguerre polynomials $L_{4}^{(\alpha)}(x)$ for $\alpha \in \mathbb Q$. It is shown that except $\mathbb Z/4\mathbb Z$, every transitive subgroup of $S_{4}$ appears as the Galois group of $L_{4}^{(\alpha)}(x)$ for infinitely many $\alpha \in \mathbb Q$. A precise characterization of $\alpha\in \mathbb Q$ is obtained for each of these occurrences. Our methods involve the standard use of resolvent cubics and the theory of p-adic Newton polygons. Using these, the Galois group computations are reduced to Diophantine problem of finding integer and rational points on certain curves.
Partial sum of the products of the Horadam numbers with subscripts in arithmetic progression
Authors:   Department of Physics and Engineering Physics, Obafemi Awolowo University, Adegoke Kunle , Frontczak Robert ,   Landesbank Baden-Württemberg, Goy Taras ,   Vasyl Stefanyk Precarpathian National University
Published: June 2021

We evaluate the partial sum of the products of the terms of any two Horadam sequences with subscripts in arithmetic progression. Illustrative examples are drawn from six well-known Horadam sequences.
An in vivo reporter for tracking lipid droplet dynamics in transparent zebrafish
Authors: Lumaquin Dianne , Johns Eleanor , Montal Emily , Weiss Joshua M , Ola David , Abuhashem Abderhman , White Richard M
Published: June 2021

Lipid droplets are lipid storage organelles found in nearly all cell types from adipocytes to cancer cells. Although increasingly implicated in disease, current methods to study lipid droplets in vertebrate models rely on static imaging or the use of fluorescent dyes, limiting investigation of their rapid in vivo dynamics. To address this, we created a lipid droplet transgenic reporter in whole animals and cell culture by fusing tdTOMATO to Perilipin-2 (PLIN2), a lipid droplet structural protein. Expression of this transgene in transparent casper zebrafish enabled in vivo imaging of adipose depots responsive to nutrient deprivation and high-fat diet. Simultaneously, we performed a large-scale in vitro chemical screen of 1280 compounds and identified several novel regulators of lipolysis in adipocytes. Using our Tg(-3.5ubb:plin2-tdTomato) zebrafish line, we validated several of these novel regulators and revealed an unexpected role for nitric oxide in modulating adipocyte lipid droplets. Similarly, we expressed the PLIN2-tdTOMATO transgene in melanoma cells and found that the nitric oxide pathway also regulated lipid droplets in cancer. This model offers a tractable imaging platform to study lipid droplets across cell types and disease contexts using chemical, dietary, or genetic perturbations.
A novel dissolved oxygen prediction model based on enhanced semi-naive Bayes for ocean ranches in northeast China
Authors: Sun Jiajun , Li Dashe , Fan Deming
Published: June 2021

A challenge of achieving intelligent marine ranching is the prediction of dissolved oxygen (DO). DO directly reflects marine ranching environmental conditions. Through accurate DO predictions, timely human intervention can be made in marine pasture water environments to avoid problems such as reduced yields or marine crop death due to low oxygen concentrations in the water. We use an enhanced semi-naive Bayes model for prediction based on an analysis of DO data from marine pastures in northeastern China from the past three years. Based on the semi-naive Bayes model, this paper takes the possible values of a DO difference series as categories, counts the possible values of the first-order difference series and the difference series of the interval before each possible value, and selects the most probable difference series value at the next moment. The prediction accuracy is optimized by adjusting the attribute length and frequency threshold of the difference sequence. The enhanced semi-naive Bayes model is compared with LSTM, RBF, SVR and other models, and the error function and Willmott’s index of agreement are used to evaluate the prediction accuracy. The experimental results show that the proposed model has high prediction accuracy for DO attributes in marine pastures.
Traffic Sign Detection and Recognition Based on Improved YOLOv4 Algorithm
Authors: Hu Gaoli , Wen Chengyu
Published: June 2021

Traffic sign detection and recognition play an important role in intelligent transportation. In this paper, a traffic sign detection framework based on YOLOv4 is proposed. The original CSPDarkNet53 backbone network model is replaced by RepVGG, and the SPP module is added in the feature pyramid part to improve the expression ability of information. The CCTSDB traffic sign data set is used to detect three categories of indication signs, prohibition signs and warning signs. In order to further improve the performance of YOLOv4 network, K-means++ algorithm was used to perform cluster analysis on the experimental data to determine the size of the priori box suitable for CCTSDB dataset. The experimental results show that the map value of the improved framework is increased by 4.1%, which indicates that the improved YOLOv4 network has a high practical value in traffic sign detection and recognition.
Focal Periphyseal Oedema: A Physiologic Finding in Paediatric Knee Pain
Authors: Rosa Susana , Freitas Margarida , Antunes Sara , Pereira Rute
Published: June 2021

Knee pain is a common reason for adolescent calls or visits to a primary care clinician. The authors present a case of an 14-year-old male adolescent with progressive bilateral nociceptive somatic knee pain. The pain was worse with weight bearing, and relieved at rest. It was located over the medial joint line. The patient was treated conservatively with nonsteroidal anti-inflammatory drugs and a rehabilitation program. Magnetic Resonance Imaging (MRI) showed bone marrow oedema, and Focal Periphyseal Oedema (FOPE) diagnosis was made. After a total of 6 months of treatment, the patient was asymptomatic. The literature is limited to a few case reports and radiologic studies describing this symptomatic physeal pathology, not reporting physical examination or treatment. The goals of this case report were to elucidate physicians of this condition, a newly reported cause of knee pain in adolescent, and to elicit the importance of a patient-tailored rehabilitation program in the treatment of this finding. FOPE is a clinical entity that should not be ignored and must be treated for the patient’s comfort. It is a self-limited condition and has an excellent prognosis.
Transformations ofN‐VinylPyrrolidone andN‐VinylCaprolactam in Organic Chemistry
Authors: Wu Fan , Musa Osama M.
Published: June 2021

N‐Vinyl pyrrolidone (VP) and N‐vinyl caprolactam (VCAP) are five and seven‐membered lactam compounds linked through the nitrogen atom to a polymerizable carbon–carbon double bond. This chapter deals with the physical properties of VP and VCAP, followed by their molecular structures, and finally elaborates on the organic reactions made possible through these physical, chemical, and structural properties. The vast majority of small molecule organic transformations originate from the moderately polarized and electron rich C═C double bond in VP and VCAP. The chapter describes a diverse array of organic reactions involving the C═C double bond of VP and VCAP, categorized by the constructions of carbon–carbon, carbon–nitrogen, carbon–oxygen, carbon–silicon, carbon‐phosphorous, carbon–sulfur bonds. It also describes the C–C bond formation via the nucleophilic substitution of an alkyl group at the α‐carbon of the lactam ring. Double α‐acylation is feasible and hence a mixture of mono‐, di‐acylated VP may be obtained.
A Review of Design and Fabrication Methods for Nanoparticle Network Hydrogels for Biomedical, Environmental, and Industrial Applications
Authors: Campea Matthew A. , Majcher Michael J. , Lofts Andrew , Hoare Todd
Published: June 2021

Nanoparticle network hydrogels (NNHs) in which nanoparticles are used as a key building block to build the gel network have attracted significant interest given their potential to leverage the favorable properties of both hydrogels (e.g., hydrophilicity, tunable pore sizes, mechanics, etc.) and a variety of different nanoparticles (e.g., high surface area, chemical activity, independently tunable porosity, mechanics) to create new functional materials. Herein, recent progress in the design and use of NNHs is comprehensively reviewed, with an emphasis on defining the typical gel morphologies/architectures that can be achieved with NNHs, the typical crosslinking approaches used to fabricate NNHs, the fundamental properties and functional benefits of NNHs, and the reported applications of NNHs in electronics (flexible electronics, sensors), environmental (sorbents, separations), agriculture, self‐cleaning‐materials, and biomedical (drug delivery, tissue engineering) applications. In particular, the way in which the NNH structure is applied to improve the performance of the hydrogel in each application is emphasized, with the aim to develop a set of principles that can be used to rationally design NNHs for future uses.
3D Anisotropic Au@Pt–Pd Hemispherical Nanostructures as Efficient Electrocatalysts for Methanol, Ethanol, and Formic Acid Oxidation Reaction
Authors: Liang Wenkai , Wang Yawen , Zhao Liang , Guo Wei , Li Dong , Qin Wei , Wu Haihua , Sun Yinghui , Jiang Lin
Published: June 2021

Anisotropic 3D nanostructures exhibit excellent electrocatalytic activity and stability due to their heterogeneous elemental distribution and unsymmetrical configuration. However, it is still a huge challenge to combine anisotropically distributed elements and anisotropic morphologies within one 3D nanostructure. Herein, 3D Au@Pt–Pd hemispherical nanostructures (Au@Pt–Pd H‐Ss) are fabricated as highly efficient electrocatalysts for oxidation reaction, which present heterogenous element distribution and anisotropic morphology. It is demonstrated that the non‐uniform adsorption of BO2− on Au‐CTA+ surface, as well as the simulated lower formation energy of Pt–Pd atoms for Au‐CTA+‐BO2‐, basically contribute to the eventual formation of Au@Pt–Pd H‐Ss. Impressively, the unique anisotropic Au@Pt–Pd H‐Ss exhibit superior electrocatalytic activity and durability for methanol, ethanol, and formic acid oxidation reaction compared with commercial Pt/C and previously reported noble‐metal based electrocatalysts. Especially, the mass activity of Au@Pt–Pd H‐Ss for MOR is 4.38 A mgPt+Pd‐1, which is about 2.0 and 4.7 times that of Au@Pt–Pd spherical nanostructures (Au@Pt–Pd Ss) and commercial Pt/C catalyst, respectively. This work provides an important reference for the design and preparation of 3D anisotropic and high‐efficiency electrocatalysts.
Recent Advancement for the Synthesis of MXene Derivatives and Their Sensing Protocol
Authors: Abbasi Nasir Mahmood , Xiao Yao , Peng Ling , Duo Yanhong , Wang Lude , Zhang Li , Wang Bing , Zhang Han
Published: June 2021

The highly efficient, 2D material‐based sensing devices are well‐suited with the advanced production technology which provide the data that can be applied effectively for the monitoring of environmental and health‐related problems. Recently, MXenes considered as new blood in the form of 2D transition metal carbides (TMC), transition metal nitride or transition metal carbonitrides that are added first time to 2D nanomaterials family MXene which are compounds obtained as a result of chemical delamination of quaternary or (ternary) layered nitrides or carbides found as an outstanding member of 2D elemental materials. On behalf of rich chemistries and unique morphologies, the MXenes derivatives delivered efficient sensors, energy storage, catalysis, and water purification. The superior volumetric surface area provides improved sensor response and greater optic, electrical, and magnetic characteristics, which are important advantages in biological and biomedical applications over macroscale materials. In this review article, different synthetics strategies of Mxene derivatives are organized and discuss their availability in terms of caste, yield, physical properties, and simplicity. To keep in mind, the facile synthetic approach and stable physical properties, the Ti3C2Tx Mxene is chosen as a model Mxene derivative, and its application in the field of environmental and biological sensors is discussed in detail.