bluuebunny/crossref_metadata_2025 huggingface dataset:
Kompetitív hatások az élelmiszer- és napicikk kiskereskedelemben
Authors: Agárdi Irma
Published: October 2021

A kiskereskedelemben kialakult vállalatcsoportokon (multinacionális, illetve hazai láncok, független kiskereskedők) belüli és csoportok közötti verseny alapvetően meghatározza a kiskereskedelem szerkezetét. Az élelmiszer- és napicikk-kiskereskedelemben a csoportokon belül helyettesítési, a csoportok között pedig kiegészítő hatásokat feltételez, amelyet fogyasztói szemszögből vizsgál. Egy hallgatói mintán végzett feltáró kutatás kimutatta, hogy a csoportokon belül és a csoportok között is alacsony, illetve közepes mértékű helyettesítő hatások érvényesülnek. A legerősebb helyettesítési viszony a multinacionális láncok által üzemeltetett hiper- és szupermarketek között mutatható ki, amelyeket a megkérdezettek nagyon hasonlónak, ebből következően felcserélhetőnek értékeltek. A hazai láncok és a független kisboltok között közepes mértékű helyettesítési hatás érvényesült, az üzlettípusonkénti vásárlási gyakoriság és a vásárlás értéke alapján.
Olivette Otele's African Europeans
Authors: St Julian Varnon Kimberly
Published: October 2021

Book Review of Olivette Otele's African Europeans: An Untold History.
The Many Contexts of the Social Responsibilities of Universities
Authors:   Tsinghua University, Brock Colin , Zhong Zhou ,   Tsinghua University
Published: October 2021

It has long been established that universities have three main functions: to teach, to research and supervise research, and to benefit the communities and regions in which they are located. In reality, the third main function permeates the other two. There are clearly social responsibilities to the students and to the staff who teach them and/or maintain their well-being through administration and other services such as counselling. Including issues of physical, social and economic well-being in their research portfolios is also common, though not universal. In this paper, we take a spatial scale approach to social responsibilities, which can take us from social responsibilities within the university, through what might be termed ‘civic responsibilities’, on to the immediate populations of a town or city, and then to ‘regional and international responsibilities’. The impact of the COVID19 pandemic in line with the sector’s social responsibility dynamic is also examined.
Unveiling the professional attributes of university teachers
Authors:   University of Kwa-Zulu Natal, Dunpath Rubby , Friedrich-Nel Hesta ,   Central University of Technology, Dippenaar Hanlie ,   Cape Peninsula University of Technology, Biggs Lynn ,   Cape Peninsula University of Technology, Joubert Deidre ,   Vaal University of Technology, Nell Ian ,   University of Stellenbosch, Yeats Jacqueline ,   University of Cape town
Published: October 2021

This article derives from a collaborative higher education project, conceptualised, and implemented by academics from seven South African universities. These academics are members of the South African Teaching Advancement at University (TAU) Fellowship. The project has its roots in the Department of Higher Education’s National Framework for Enhancing Academics as University Teachers, which identifies six leverage points or ‘imperatives for action’, one of which is the imperative to develop expectations (attributes) of academics in their role as university teachers. TAU Fellows engaged in the collaborative enquiry over a period of three years, appropriating a conceptual framework posited by Henry Giroux, of teachers as transformative intellectuals. In this article, each author reflects on his/her own scholarship of teaching and learning (SoTL) endeavours, which provided the conceptual tools to illuminate what for them and the group, are valuable professional attributes. The metaphor of the Baobab tree is appropriated to signify ‘rhizomatic thinking’, which portrays teaching as subconscious, subversive, non-linear, multi-directional, serendipitous, esoteric, dynamic, unbounded, unpredictable, adaptive, and non-hierarchical. This SoTL enquiry enabled the TAU group to unveil and declare their professional attributes as they made public their praxis. The attributes include academics as imbued with the capacity for critical thinking and actively promoting critical thinking amongst their students; as active learning mediators; as responsive, innovative, and relevant curriculum designers; and as engaged professionals. Appreciation of the article is enhanced when the reader first views this video https://youtu.be/yoA9guMut-8.
Being-in-context through live projects: including situated knowledge in community engagement projects
Authors:   University of Cape Town, Abrahams Clint , Delport Hermie ,   STADIO HEI, Brown James ,   Umea University, Weber Anna ,   RWTH Aachen University
Published: October 2021

This paper explores the ‘live project’ as a pedagogical tool in architectural education in South Africa: one that allows educators and students, through pedagogies-in-context, to access and develop deeply situated knowledge(s) in the context of community engagement. We propose the concept of pedagogies-in-context as pedagogies in multiple overlapping contexts: the physical and social contexts of the higher-education institution, the intellectual, pedagogical, and political contexts of the curriculum, and the socio-economic contexts of educators, students, and communities. A live project allows for multiple ways of being-in-context – as students, educators, researchers, and community members. The paper employs an exploration of and critical reflection on one particular live project. Based on the critical reflection, we propose that in the South African context, live projects can be understood as enterprises to reconstitute situated knowledge(s), thereby empowering students and educators to rewrite their own experiences of learning and teaching by making meaningful connections with communities.
Contextually responsive and knowledge-focused teaching: disrupting the notion of ‘best practices’
Authors:   Stellenbosch University, Jacobs Ceclia
Published: October 2021

The notion that universal ‘best practices’ underpin higher education teaching is problematic. Although there is general agreement in the literature that good teaching is not decontextualised but rather that it is responsive to the context in which it occurs, generic views of teaching and learning continue to inform practices at universities in South Africa. This conceptual paper considers why a decontextualised approach to higher education teaching prevails and interrogates factors influencing this view, such as: the knowledge bases informing this approach to teaching, the factors from within the higher education sector that shape this approach to teaching, as well as the practices and Discourses prevalent in the field of academic development. The paper argues that teaching needs to be both contextually responsive and knowledge- focused. Disrupting ‘best practices’ approaches require new ways of undertaking academic staff development, which are incumbent on the understandings that academic developers bring to the enterprise.
Optimisation and Management of Virtual Power Plants Energy Mix Trading Model
Authors: Ullah Zahid , Mirjat Nayyar Hussain , Baseer Muhammad
Published: October 2021

. In this study, a robust optimisation method (ROM) is proposed with aim to achieve optimal scheduling of virtual power plants (VPPs) in the day-ahead electricity markets where electricity prices are highly uncertain. Our VPP is a collection of various distributed energy resources (DERs), flexible loads, and energy storage systems that are coordinated and operated as a single entity. In this study, an offer and bid-based energy trading mechanism is proposed where participating members in the VPP setting can sell or buy to/from the day-ahead electricity market to maximise social welfare (SW). SW is defined as the maximisation of end-users benefits and minimisation of energy costs. The optimisation problem is solved as a mixed-integer linear programming model taking the informed decisions at various levels of uncertainty of the market prices. The benefits of the proposed approach are consistency in solution accuracy and traceability due to less computational burden and this would be beneficial for the VPP operators. The robustness of the proposed mathematical model and method is confirmed in a case study approach using a distribution system with 18-buses. Simulation results illustrate that in the highest robustness scenario, profit is reduced marginally, however, the VPP showed robustness towards the day-ahead market (DAM) price uncertainty
Performance enhancement of numerical approaches for scheduling problem on machine single
Authors: Selt Omar
Published: October 2021

In this paper, we consider a single-machine scheduling problem, with the aim of minimizing the weighted sum of the  completion time. This problem is NP-hard, making the search for an optimal solution very difficult. In this frame, two heuristics (H1), (H2) and metaheuristic tabu search are suggested.To improve the performance of this techniques, we used, on one hand, different diversification strategies (TES1 and TES2) with the aim of exploring unvisited regions of the solution space. On the other hand, we suggested three types of neighborhoods (neighborhood by swapping, neighborhood by insertion and neighborhood by blocks).It must be noted that tasks movement can be within one period or between different periods.
Effect of a Neoprene Knee Sleeve on Performance and Muscle Activity in Men and Women During High-Intensity, High-Volume Resistance Training
Authors: Hatfield Disa L. , Stranieri Andrew M. , Vincent Lisa M. , Earp Jacob E.
Published: October 2021

Hatfield, DL, Stranieri, AM, Vincent, LM, and Earp, JE. Effect of a neoprene knee sleeve on performance and muscle activity in men and women during high-intensity, high-volume resistance training. J Strength Cond Res 35(12): 3300–3307, 2021—The purpose of this study was to assess the effects of a commercially available neoprene knee sleeve (KS) on exercise performance and muscle activity during an exhaustive leg press exercise. Twenty resistance-trained individuals, 11 men {21.0 ± 2.2 years; 77.7 ± 8.7 kg; 1 repetition maximum (1RM/body mass [BM]): 0.30 ± 0.04} and 9 women (22.0 ± 3.5 years; 66.1 ± 9.1 kg; 1RM/BM: 0.30 ± 0.04), all subjects (21.5 ± 2.8 years; 72.5 ± 10.5 kg; 1RM/BM: 0.30 ± 0.04), participated in 3 testing sessions. The second and third sessions were performed using a counterbalanced and randomized design in which subjects exercised with (WS) or without (NS) KSs and performed 6 sets of leg press exercise at 80% of 1RM until failure with a 3-minute rest between sets. Number of repetitions, blood lactate (BL), heart rate (HR), rating of perceived exertion (RPE), and peak and average power were recorded after each set. Surface electromyography (EMG) of the right and left vastus lateralis muscles was also recorded to compare muscle activity between conditions. Significance was set at p ≤ 0.05, and values are presented as mean ± SD. No significant differences were observed in the total number of repetitions for all sets (p = 0.3; WS 75.3 ± 33.7, NS 79.8 ± 34.3) and the number of repetitions per set between conditions (p ≤ 0.05) or between men and women. Similarly, no significance differences (p ≤ 0.05) were observed for BL, HR, RPE, or EMG per set between conditions or between men and women. These results suggest that wearing compressive neoprene KSs has no effect on improving performance and associated variables during high-load, high-volume lower-body resistance training.
The Validity, Reliability, and Agreement of Global Positioning System Units—Can We Compare Research and Applied Data?
Authors: Brosnan Ross J. , Watson Greig , Stuart Will , Twentyman Craig , Kitic Cecilia M. , Schmidt Matthew
Published: October 2021

Brosnan, RJ, Watson, G, Stuart, W, Twentyman, C, Kitic, CM, and Schmidt, M. The validity, reliability, and agreement of GPS units—Can we compare research and applied data? J Strength Cond Res 36(12): 3330–3338, 2022—This study's aim was to investigate the validity, within-brand interunit reliability, and between-brand agreement of movement indicators from 3 commonly used global positioning system (GPS) units used in applied and research settings. Forty-two units (GPSports EVO; 10 Hz, n = 13: GPSports HPU; 5 Hz, n = 14: and Catapult S5; 10 Hz, n = 15) were investigated across 3 experiments: a 40-m linear track with all units pushed on a trolley, a sport simulation circuit with all units pulled on a sled, and a similar circuit with 3 models of units placed in a modified GPS vest worn by an athlete between the scapulae. Distance, speed, and acceleration indices were obtained and analyzed with the level of significance set (ρ < 0.05). The results demonstrated good to moderate (% mean difference; 0–6.5%) validity with criterion and good (coefficient of variation [CV] ± 90% confidence interval [CI]: 0–3.9%) interunit reliability for distance and speed in units. Ten hertz units demonstrated good to moderate (CV ± 90% CI: 0.21–5.58%) interunit reliability in all acceleration and deceleration measures, with 5 Hz units having good to poor (CV ± 90% CI: 4.54–12.78%) results. Agreement ranged from good to moderate (% mean difference; 0.01–7.8%) for distance, speed, and absolute acceleration/deceleration. Agreement ranged from good to poor (% mean difference; 2.21–32.74%) in average acceleration. The GPS units investigated can be compared within and between applied and research settings for distance and speed. However, caution is warranted in acceleration indices. This highlights the importance of testing other commonly used GPS models and brands.
AUMENTO POPULACIONAL E DEGRADAÇÃO AMBIENTAL: a conta que não quer fechar
Authors: Friede Reis
Published: October 2021

O presente artigo propõe uma reflexão sobre a relação entre crescimento populacional e desenvolvimento sustentável, questionando se o aumento populacional é um dos causadores da escassez de recursos e, consequentemente, um dos problemas que impedem o desenvolvimento sustentável. Discorre sobre algumas das causas constantemente associadas ao alardeado rompimento da estabilidade ambiental em que se encontra o planeta, citando, ainda, seus respectivos efeitos.
MUDANÇAS POLÍTICAS E ECONÔMICAS QUE CONTRIBUÍRAM PARA O PANORAMA ATUAL BRASILEIRO DO MERCADO DE TRABALHO E EMPREGO
Authors: Alves Rodrigo Gomes , Malavota Gustavo Pedroso , Ferreira Helen Gonçalves Romeiro , Avelar Kátia Eliane Santos
Published: October 2021

Partindo de revisões bibliográficas de uma literatura voltada aos processos de formação e conceituação do termo “trabalho” e de suas ressignificações a partir do espaço e do tempo, compreende-se seu entendimento atual. Tendo observado o progresso histórico do labor, é possível traçar um panorama associando o conceito às fases pela qual o mercado, o trabalho e o emprego passaram no cenário nacional. Dessa maneira, traça-se um paralelo entre a relação do homem com o trabalho e pode-se definir a partir dessa relação uma sessão histórica do desemprego e de sua importância como definidor da sociedade brasileira, desde a virada do século XX até os dias de hoje.
COMPORTAMENTO DE CONSUMIDORES E CARACTERÍSTICAS NO DESCARTE DE EQUIPAMENTOS ELETRÔNICOS EM BAIRRO RESIDENCIAL DE BELÉM – PARÁ
Authors: Malheiros Edwin Hennington Pereira , Corradi Analaura , Assumpção Douglas Junio Fernandes
Published: October 2021

O consumo de equipamentos eletrônicos cresce constantemente a cada ano no país, segundo informações de consultorias como Fundação Getúlio Vargas, 2019 e Growth from Knowledge, 2020, seguindo a tendência global. O consumo excessivo combinado com a falta de prática de descarte dos resíduos de equipamentos eletrônicos de forma adequada causa cenários de riscos de impactos ambientais em todo o território nacional. A falta de conhecimento, estrutura e gestão pública em relação ao descarte de equipamentos eletrônicos provocam dúvidas sobre qual o limite suportado pelo meio ambiente em receber os resíduos eletrônicos, que na maioria, são contaminantes e degradam o meio ambiente e a saúde humana devido à presença de agentes químicos. A revisão bibliográfica centra-se nos autores que abordam o comportamento do consumidor, como Bauman, 2008, Solomon, 2002 e Statt, 1997. Além do embasamento teórico, a pesquisa será fomentada com dados referentes ao comércio de produtos eletrônicos no Brasil e os impactos ambientais causados pelo descarte irregular dos resíduos de equipamentos eletrônicos. O objetivo da pesquisa é identificar o comportamento do consumo e descarte de equipamentos eletrônicos e a relação com os impactos ambientais, utilizando parâmetros avaliativos para os respectivos cenários. Para isso, elaborou-se um questionário a fim de sondar e obter dados reais do comportamento do consumidor. Corroborando com o pensamento dos autores supracitados, o questionário foi destinado a um público de forma generalizada, com recorte pessoal, de forma eletrônica. Obtiveram-se respostas de 83 entrevistados de um bairro residencial de Belém, e como resultado, busca-se identificar e definir cenários que auxiliem no desenvolvimento de novas políticas públicas, através da compreensão do comportamento do cidadão e buscando complementar práticas já aplicadas na sociedade.
Acceptability of a Dapivirine Gel Administered Rectally to HIV-1 Seronegative Adults (MTN-033 Study)
Authors: Bauermeister José A. , Tingler Ryan C. , Johnson Sherri , Macagna Nicole , Lucas Jonathan , Dominguez-Islas Clara , Szydlo Daniel , Ngo Julie , Jacobson Cindy E. , Kramzer Lindsay , Singh Devika , Dezzutti Charlene S. , Na Ayudhya Ratiya Pamela Kunjara , Piper Jeanna , Devlin Bríd , Hendrix Craig W. , Ho Ken ,   on behalf of the MTN-033 Protocol Team
Published: October 2021

We triangulated quantitative and qualitative assessments to evaluate participants’ acceptability of 0.05% dapivirine rectal microbicide (RM) gel administered via two separate modalities (a rectal applicator and an artificial phallus for use as a coital simulation device) as part of a Phase I trial (N = 14) among men who have sex with men (MSM) randomized using a 1:1 ratio. Overall, participants reported favorable acceptability of the gel (n = 11; 78.6%), the same or more at the end of the study compared to when they started the study. Additionally, when discussing their preferred administration modality, they noted that both methods had positive qualities but also potential areas of improvement. Our findings underscore the need to create multiple delivery methods for a future microbicide gel (i.e., with and without the need for an applicator) and highlight the importance of offering MSM choices in how biomedical HIV prevention strategies are delivered.
Living While Black, Gay, and Poor: The Association of Race, Neighborhood Structural Disadvantage, and Prep Utilization Among a Sample of Black Men Who Have Sex With Men in the Deep South
Authors: Burns Paul A. , Hall Casey D. Xavier , Poteat Tonia , Mena Leandro A. , Wong Frank Y.
Published: October 2021

Utilizing the Andersen Healthcare Utilization Model, we examined the role of neighborhood context on pre-exposure prophylaxis (PrEP) utilization among a sample of Black men who have sex with men (MSM) residing in a medium-sized city in the Deep South. Data were derived from a sample of 142 Black MSM aged 18–64 years who were eligible for PrEP from a community-based study known as “ACCELERATE!” We used multilevel structural equation modeling to assess PrEP use. Social support, sexual risk, and health care access were predictive of PrEP use. Notably, residing in a neighborhood with concentrated poverty was associated with decreased PrEP use. Our findings reveal neighborhood structural disadvantage is associated with decreased PrEP use among Black MSM, after adjusting of individual-level sociodemographic characteristics. There is an urgent need to develop HIV prevention interventions and programs that explicitly address structural-level factors to eliminate racial/ethnic differences in HIV.
An Examination of Stress Generation and Stress Exposure Models in Relation to Symptoms of Borderline Personality Disorder
Authors: Uliaszek Amanda A.
Published: October 2021

Research examining life stress as a precipitant, co-occurrence, and consequence of psychopathology often has implications for two explanatory models: stress exposure, where stress causes symptoms, and stress generation, where symptoms cause stress. Preliminary evidence suggests that both processes are evident in borderline personality disorder (BPD). The present study examined 101 adults who self-reported at least three symptoms of BPD at prescreen, with 30% of the sample meeting full diagnostic criteria for BPD. Cross-lagged panel analyses were used to examine the relationships between BPD symptomatology and four forms of life stress. Stress exposure and stress generation were not supported for either form of chronic life stress. Results supported stress generation in both dependent and interpersonal episodic life stress, and stress exposure for interpersonal episodic life stress. These findings evidenced small effects only. Findings point to the impact of interpersonal stress on changes in symptomatology over time.
Development of the Psychological Maltreatment Inventory
Authors: Boughn Alison M. , DeCino Daniel A.
Published: October 2021

This article introduces the development and implementation of the Psychological Maltreatment Inventory (PMI) assessment with child respondents receiving services because of an open child abuse and/or neglect case in the Midwest (N = 166). Sixteen items were selected based on the literature, subject matter expert refinement, and readability assessments. Results indicate the PMI has high reliability (α = .91). There was no evidence the PMI total score was influenced by demographic characteristics. A positive relationship was discovered between PMI scores and general trauma symptom scores on the Trauma Symptom Checklist for Children Screening Form (TSCC-SF; r = .78, p = .01). Evidence from this study demonstrates the need to refine the PMI for continued use with children. Implications for future research include identification of psychological maltreatment in isolation, further testing and refinement of the PMI, and exploring the potential relationship between psychological maltreatment and suicidal ideation.
Counseling Older LGBTQ+ Adults of Color: Relational-Cultural Theory in Practice
Authors: Chan Christian D. , Frank Camille D. , DeMeyer Melisa , Joshi Aishwarya , Andrade Vargas Edson , Silverio Nicole
Published: October 2021

Lesbian, gay, bisexual, transgender, and queer (LGBTQ+) communities have faced a history of discriminatory incidents with deleterious effects on mental health and wellness. Compounded with other historically marginalized identities, LGBTQ+ people of color continue to experience disenfranchisement, inequities, and invisibility, leading to complex experiences of oppression and resilience. Moving into later stages of life span development, older adults of color in LGBTQ+ communities navigate unique nuances within their transitions. The article addresses the following goals to connect relational–cultural theory (RCT) as a relevant theoretical framework for counseling with older LGBTQ+ adults of color: (a) explication of conceptual and empirical research related to older LGBTQ+ adults of color; (b) outline of key principles involved in the RCT approach; and (c) RCT applications in practice and research for older LGBTQ+ adults of color.
Whiteness Scholarship in the Counseling Profession: A 35-Year Content Analysis
Authors: Bayne Hannah B. , Hays Danica G. , Harness Luke , Kane Brianna
Published: October 2021

We conducted a content analysis of counseling scholarship related to Whiteness for articles published in national peer-reviewed counseling journals within the 35-year time frame (1984–2019) following the publication of Janet Helms’s seminal work on White racial identity. We identified articles within eight counseling journals for a final sample of 63 articles—eight qualitative (12.7%), 38 quantitative (60.3%), and 17 theoretical (27.0%). Our findings outline publication characteristics and trends and present themes for key findings in this area of scholarship. They reveal patterns such as type of research methodology, sampling, correlations between White racial identity and other constructs, and limitations of White racial identity assessment. Based on this overview of extant research on Whiteness, our recommendations include future research that focuses on behavioral and clinical manifestations, anti-racism training within counselor education, and developing a better overall understanding of how White attitudes and behaviors function for self-protection.
The possibility of reclamation criteria success in Indonesia: soil condition, vegetation structure and species composition
Authors: Yunanto Tedi , Amanah Farisatul , Wisnu Nabila Putri
Published: October 2021

There are two regulations for mine reclamation success in the forestry area in Indonesia, namely Minister of Forestry Regulation No. P.60/Menhut-II/2009 and Minister of Energy and Mineral Resources Decree No. 1827.K/30/MEM/2018. Both regulations rule vegetation and soil success. This study aims to analyse criteria parameters from both regulations in the mine reclamation and compare them to the surrounding secondary natural forest (SNF). This study was conducted in 6 six types of mine reclamation stand structures: 1, 4, 6, 9, 11-year-old plantation and SNF using 1 hectare of the circular plot each (total 6 ha). Soil samples were collected from 40 cm depth to analyse physical, biological and chemical conditions. Mine reclamation areas had almost similar physical, biological and chemical soil conditions with SNF. Nevertheless, due to the potential acid-forming (PAF) material from overburden, the 1-year-old plantation had pH = 3.23-3.27. The highest diversity index and the number of species and families in all reclamation areas were H’ = 1.82 (11-year-old); 14 species (9-year-old); and 11 families (9-year-old), comparing with SNF were H’ = 3.48; 67 species, and 31 families. Conversely, vegetation structure parameters in mine reclamation areas were higher than SNF (diameter at height breast (DBH; 1.3 m) = 28.42 cm; tree density = 469/ha; basal area = 35.04 m2/ha; and total height = 16.85 m). Compared to the SNF, vegetation structure and soil conditions are mostly possible for mine reclamation success. Still, species composition needs to be considered further as a standard interval to meet the criteria.
Adults’ and Children’s Comprehension of Linguistic Disjunction
Authors: Jasbi Masoud , Frank Michael C.
Published: October 2021

Disjunction has played a major role in advancing theories of logic, language, and cognition, featuring as the centerpiece of debates on the origins and development of logical thought. Recent studies have argued that due to non-adult-like pragmatic reasoning, preschool children’s comprehension of linguistic disjunction differs from adults in two ways. First, children are more likely to interpret “or” as “and” (conjunctive interpretations); Second, children are more likely to consider a disjunction as inclusive (lack of exclusivity implicatures). We tested adults and children’s comprehension of disjunction in existential sentences using two and three-alternative forced choice tasks, and analyzed children’s spontaneous verbal reactions prior to their forced-choice judgments. Overall our results are compatible with studies that suggest children understand the basic truth-conditional semantics of disjunction. Children did not interpret “or” as “and”, supporting studies that argue conjunctive interpretations are due to task demands. In addition, even though our forced-choice tasks suggest children interpreted disjunction as inclusive, spontaneous verbal reactions showed that children were sensitive to the adult-like pragmatics of disjunction. Theoretically, these studies provide evidence against previous developmental accounts, and lend themselves to two alternative hypotheses. First, that preschool children’s pragmatic knowledge is more adult-like than previously assumed, but forced-choice judgments are not sensitive enough to capture this knowledge. Second, children may have the knowledge of the relevant lexical scale themselves, but be uncertain whether a new speaker also has this knowledge (mutual knowledge of the scale).
Überleben in der Plattformökonomie
Authors: Richter Philipp
Published: October 2021

Warum können einige Plattformen-Unternehmen langfristig bestehen, während andere verschwinden? Dieser Beitrag analysiert diese Fragestellung aus der Sicht der Transaktionskostentheorie für Unternehmen die Online Markplätze betreiben. Dabei wird die Hypothese entwickelt, dass sich Plattformunternehmen behaupten, wenn ihre laufenden Kosten des Betriebs geringer sind als die Transaktionskosten, die ohne sie auftreten würden.
METAEVALUACIÓN EN EL PROFESORADO DE EDUCACIÓN FÍSICA
Authors: Chaverra-Fernández B. , Hernández-Álvarez J.L.
Published: October 2021

Este artículo presenta resultados de una investigación más amplia sobre las concepciones y la acción evaluativa de seis docentes de educación física de Medellín (Colombia). El objetivo específico que se presenta fue: Analizar las reflexiones que pueden surgir en el profesorado una vez finalizado el proceso evaluativo en una unidad didáctica, es decir, la evaluación de la propia evaluación (metaevaluación). El diseño utilizado fue cualitativo, específicamente un estudio de caso múltiple. Se utilizaron como estrategias de recolección de información las entrevistas semi-estructuradas y, cuando fue posible por su existencia, el análisis documental. La investigación permite concluir que, finalizar una unidad didáctica no conlleva necesariamente a una reflexión del profesorado sobre la evaluación realizada. Los pocos cuestionamientos mencionados en sus discursos, se refieren a breves reflexiones sobre los instrumentos o procedimientos realizados, pero no hay una reflexión profunda sobre los propósitos formativos que tiene la evaluación y sobre sus aportes a una enseñanza de calidad.
PRIMER TRABAJO DEL HÉROE: HERAKLES DE WERNER HERZOG
Authors: Poch Chantal
Published: October 2021

La obra del cineasta bávaro Werner Herzog ha sido ampliamente estudiada; su primer cortometraje Herakles (1962), en cambio, ha merecido poca atención. Este artículo tratará de solventar ese vacío. Después de apuntar algunos vínculos personales de Herzog con el mundo clásico, exploraremos las características principales de Herakles como héroe para esbozar los motivos de su interés para el director. A continuación, analizaremos el contenido del cortometraje localizando en él los trabajos descritos en la Biblioteca de Apolodoro y fijándonos en su traslado a la contemporaneidad. Tras este análisis compararemos el Herakles que aparece en el film con los Herakles del péplum y algunos personajes posteriores del director para acabar definiendo una idea de forzudo particular de la filmografía de Herzog que entronca directamente con la propia visión de su carrera creativa.
OCUPACIÓN SIMBÓLICA E IDEOLÓGICA DE WASHINGTON DURANTE LA ERA TRUMP: EL HUNDIMIENTO DE LA CAPITAL DE LOS ESTADOS UNIDOS EN LAS SERIES LA CONJURA CONTRA AMÉRICA, EL HOMBRE EN EL CASTILLO Y EL CUENTO DE LA CRIADA
Authors: Da Costa Marco
Published: October 2021

El acceso de Donald Trump a la presidencia de los Estados Unidos en 2016 generó multitud de corrientes de opinión a favor o en contra. En este último caso, se tradujo, entre otras manifestaciones, en el estreno de un grupo de producciones televisivas que reflexionaban críticamente sobre la historia de los Estados Unidos. En concreto, este artículo pretende mostrar cómo la ocupación del espacio público de la capital estadounidense, a partir de las distopías y ucronías televisivas de La conjura contra América, El cuento de la criada y El hombre en el castillo, se convirtió en un poderoso recurso metafórico para interpretar unos tiempos marcados por la crisis económica y el auge del populismo político.
The Experience of Parents of Hospitalized Children Living With Medical Complexity
Authors: Kemp Kyle A. , Fairie Paul , Steele Brian , McNeil Deborah , Kromm Seija , Johnson David , Santana Maria J.
Published: October 2021

BACKGROUND AND OBJECTIVES

Children living with medical complexity (CMC) experience frequent hospital admissions. Validated patient-reported experience measures may inform care improvements in this cohort. Our objectives were to examine the comprehensive inpatient experience of CMC by using a validated patient-reported experience measure and compare the results with all other respondents at 2 academic pediatric hospitals in a western Canadian province.

METHODS

Parents completed the Child Hospital Consumer Assessment of Healthcare Providers and Systems survey. Surveys were linked with inpatient records, and an accepted case definition was used to extract records pertaining to CMC. Results were reported as percent in “top box,” represented by the most positive answer choice to each measure. Odds of reporting a top box response were calculated while controlling for demographic and clinical features.

RESULTS

From October 2015 to March 2019, 4197 surveys (1515 CMC; 2682 non-CMC) were collected. Among CMC, the highest-rated measures pertained to being kept informed while in the emergency department, a willingness to recommend the hospital, and parents having a clear understanding of their role in their child’s care. The lowest-rated measures pertained to preventing mistakes and reporting concerns and the quietness of the hospital room at night. Compared with others, parents of CMC reported lower raw results on 20 of the 28 measures. They also reported lower a odds of reporting a top box score on 2 measures and higher odds on 1.

CONCLUSIONS

Parents of CMC revealed many perceived gaps. These findings can be used to inform strategies to improve care among CMC and policies to support the care of CMC and their families.
Factors Associated With Bronchiolitis Guideline Nonadherence at US Children’s Hospitals
Authors: Hester Gabrielle , Nickel Amanda J. , Watson David , Bergmann Kelly R.
Published: October 2021

BACKGROUND

The objective with this study was to explore factors associated with nonadherence to national bronchiolitis guidelines at 52 children’s hospitals.

METHODS

We included patients 1 month to 2 years old with emergency department (ED) or admission encounters between January 2016 and December 2018 and bronchiolitis diagnoses in the Pediatric Health Information System database. We excluded patients with any intensive care, stay >7 days, encounters in the preceding 30 days, chronic medical conditions, croup, pneumonia, or asthma. Guideline nonadherence was defined as receiving any of 5 tests or treatments: bronchodilators, chest radiographs, systemic steroids, antibiotics, and viral testing. Nonadherence outcomes were modeled by using mixed effects logistic regression with random effects for providers and hospitals. Adjusted odds ratio (aOR) >1 indicates greater likelihood of nonadherence.

RESULTS

A total of 198 028 encounters were included (141 442 ED and 56 586 admission), and nonadherence was 46.1% (ED: 40.2%, admissions: 61.0%). Nonadherence increased with patient age, with both ED and hospital providers being more likely to order tests and treatments for children 12 to 24 months compared with infants 1 ot 2 months (ED: aOR, 3.39; 95% confidence interval [CI], 3.20–3.60; admissions: aOR, 2.97; CI, 2.79–3.17]). Admitted non-Hispanic Black patients were more likely than non-Hispanic white patients to receive guideline nonadherent care (aOR, 1.16; CI, 1.10–1.23), a difference driven by higher use of steroids (aOR, 1.29; CI, 1.17–1.41) and bronchodilators (aOR, 1.39; CI, 1.31–1.48). Hospital effects were prominent for viral testing in ED and admission encounters (intraclass correlation coefficient of 0.35 and 0.32, respectively).

CONCLUSIONS

Multiple factors are associated with national bronchiolitis guideline nonadherence.
EHR-Integrated Monitor Data to Measure Pulse Oximetry Use in Bronchiolitis
Authors: Kern-Goldberger Andrew S. , Rasooly Irit R. , Luo Brooke , Craig Sansanee , Ferro Daria F. , Ruppel Halley , Parthasarathy Padmavathy , Sergay Nathaniel , Solomon Courtney M. , Lucey Kate E. , Muthu Naveen , Bonafide Christopher P.
Published: October 2021

BACKGROUND AND OBJECTIVES

Continuous pulse oximetry (oxygen saturation [Spo2]) monitoring in hospitalized children with bronchiolitis not requiring supplemental oxygen is discouraged by national guidelines, but determining monitoring status accurately requires in-person observation. Our objective was to determine if electronic health record (EHR) data can accurately estimate the extent of actual Spo2 monitoring use in bronchiolitis.

METHODS

This repeated cross-sectional study included infants aged 8 weeks through 23 months hospitalized with bronchiolitis. In the validation phase at 3 children’s hospitals, we calculated the test characteristics of the Spo2 monitor data streamed into the EHR each minute when monitoring was active compared with in-person observation of Spo2 monitoring use. In the application phase at 1 children’s hospital, we identified periods when supplemental oxygen was administered using EHR flowsheet documentation and calculated the duration of Spo2 monitoring that occurred in the absence of supplemental oxygen.

RESULTS

Among 668 infants at 3 hospitals (validation phase), EHR-integrated Spo2 data from the same minute as in-person observation had a sensitivity of 90%, specificity of 98%, positive predictive value of 88%, and negative predictive value of 98% for actual Spo2 monitoring use. Using EHR-integrated data in a sample of 317 infants at 1 hospital (application phase), infants were monitored in the absence of oxygen supplementation for a median 4.1 hours (interquartile range 1.4–9.4 hours). Those who received supplemental oxygen experienced a median 5.6 hours (interquartile range 3.0–10.6 hours) of monitoring after oxygen was stopped.

CONCLUSIONS

EHR-integrated monitor data are a valid measure of actual Spo2 monitoring use that may help hospitals more efficiently identify opportunities to deimplement guideline-inconsistent use.
Laryngomalacia in the Premature Neonate
Authors: Leonard James A. , Reilly Brian K.
Published: October 2021

Laryngomalacia is the most common cause of stridor in newborns. Affected patients may present with noisy breathing, a classic high-pitched inspiratory stridor that worsens with feeding. While the exact etiology remains unclear, the condition is characterized by softening of the supraglottic structures, including the epiglottis, aryepiglottic folds, and arytenoid cartilages. The condition is most often self-limited and requires expectant management. However, in some infants, severe disease, including failure to thrive or respiratory distress, may require medical or even surgical intervention. When caring for premature neonates, special care is required to evaluate for synchronous airway lesions.
Congenital Pigmentary Anomalies in the Newborn
Authors: Habeshian Kaiane A. , Kirkorian A. Yasmine
Published: October 2021

Congenital pigmentary anomalies may be evident at birth or soon after, with some birthmarks becoming apparent later in infancy or early childhood. It is important to recognize various pigmentary anomalies in the neonate, most of which are benign but a subset of which are associated with cutaneous morbidity or systemic ramifications and require further evaluation. This review will focus on pigmentary mosaicism, congenital melanocytic nevi, nevus spilus, dermal melanocytosis, and pigmentary anomalies associated with neurofibromatosis type 1 (café au lait spots, freckling, plexiform neurofibromas, nevus anemicus), tuberous sclerosis (hypomelanotic macules), and incontinentia pigmenti.
Optimizing Situation Awareness to Reduce Emergency Transfers in Hospitalized Children
Authors: Sosa Tina , Sitterding Mary , Dewan Maya , Coleman Michelle , Seger Brandy , Bedinghaus Katy , Hawkins DeAnna , Maddock Benjamin , Hausfeld Jackie , Falcone Richard , Brady Patrick W. , Simmons Jeffrey , White Christine M.
Published: October 2021

BACKGROUND AND OBJECTIVES

Interventions to improve care team situation awareness (SA) are associated with reduced rates of unrecognized clinical deterioration in hospitalized children. By addressing themes from recent safety events and emerging corruptors to SA in our system, we aimed to decrease emergency transfers (ETs) to the ICU by 50% over 10 months.

METHODS

An interdisciplinary team of physicians, nurses, respiratory therapists, and families convened to improve the original SA model for clinical deterioration and address communication inadequacies and evolving technology in our inpatient system. The key drivers included the establishment of a shared mental model, psychologically safe escalation, and efficient and effective SA tools. Novel interventions including the intentional inclusion of families and the interdisciplinary team in huddles, a mental model checklist, door signage, and an electronic health record SA navigator were evaluated via a time series analysis. Sequential inpatient-wide testing of the model allowed for iteration and consensus building across care teams and families. The primary outcome measure was ETs, defined as any ICU transfer in which the patient receives intubation, inotropes, or ≥3 fluid boluses within 1 hour.

RESULTS

The rate of ETs per 10 000 patient-days decreased from 1.34 to 0.41 during the study period. This coincided with special cause improvement in process measures, including risk recognition before medical response team activation and the use of tools to facilitate shared SA.

CONCLUSIONS

An innovative, proactive, and reliable process to predict, prevent, and respond to clinical deterioration was associated with a nearly 70% reduction in ETs.
Materials genes of heterogeneous catalysis from clean experiments and artificial intelligence
Authors: Foppa Lucas , Ghiringhelli Luca M. , Girgsdies Frank , Hashagen Maike , Kube Pierre , Hävecker Michael , Carey Spencer J. , Tarasov Andrey , Kraus Peter , Rosowski Frank , Schlögl Robert , Trunschke Annette , Scheffler Matthias
Published: October 2021

The performance in heterogeneous catalysis is an example of a complex materials function, governed by an intricate interplay of several processes (e.g., the different surface chemical reactions, and the dynamic restructuring of the catalyst material at reaction conditions). Modeling the full catalytic progression via first-principles statistical mechanics is impractical, if not impossible. Instead, we show here how a tailored artificial-intelligence approach can be applied, even to a small number of materials, to model catalysis and determine the key descriptive parameters (“materials genes”) reflecting the processes that trigger, facilitate, or hinder catalyst performance. We start from a consistent experimental set of “clean data,” containing nine vanadium-based oxidation catalysts. These materials were synthesized, fully characterized, and tested according to standardized protocols. By applying the symbolic-regression SISSO approach, we identify correlations between the few most relevant materials properties and their reactivity. This approach highlights the underlying physicochemical processes, and accelerates catalyst design.

Impact statement

Artificial intelligence (AI) accepts that there are relationships or correlations that cannot be expressed in terms of a closed mathematical form or an easy-to-do numerical simulation. For the function of materials, for example, catalysis, AI may well capture the behavior better than the theory of the past. However, currently the flexibility of AI comes together with a lack of interpretability, and AI can only predict aspects that were included in the training. The approach proposed and demonstrated in this IMPACT article is interpretable. It combines detailed experimental data (called "clean data") and symbolic regression for the identification of the key descriptive parameters (called "materials genes") that are correlated with the materials function. The approach demonstrated here for the catalytic oxidation of propane will accelerate the discovery of improved or novel materials while also enhancing physical understanding.
Forecasting Development of COVID-19 Epidemic in European Union Using Entropy-Randomized Approach
Authors: Popkov Yuri , Dubnov Yuri , Popkov Alexey
Published: October 2021

The paper is devoted to the forecasting of the COVID-19 epidemic by the novel method of randomized machine learning. This method is based on the idea of estimation of probability distributions of model parameters and noises on real data. Entropy-optimal distributions correspond to the state of maximum uncertainty which allows the resulting forecasts to be used as forecasts of the most "negative" scenario of the process under study. The resulting estimates of parameters and noises, which are probability distributions, must be generated, thus obtaining an ensemble of trajectories that considered to be analyzed by statistical methods. In this work, for the purposes of such an analysis, the mean and median trajectories over the ensemble are calculated, as well as the trajectory corresponding to the mean over distribution values of the model parameters. The proposed approach is used to predict the total number of infected people using a three-parameter logistic growth model. The conducted experiment is based on real COVID-19 epidemic data in several countries of the European Union. The main goal of the experiment is to demonstrate an entropy-randomized approach for predicting the epidemic process based on real data near the peak. The significant uncertainty contained in the available real data is modeled by an additive noise within 30%, which is used both at the training and predicting stages. To tune the hyperparameters of the model, the scheme is used to configure them according to a testing dataset with subsequent retraining of the model. It is shown that with the same datasets, the proposed approach makes it possible to predict the development of the epidemic more efficiently in comparison with the standard approach based on the least-squares method.
Characteristics of Dye-doped Silica Nanoparticles- Based Random Lasers in the Air and Water
Authors: Ta Duong Van , Nguyen Tam Trong , Mai Hanh Hong , Nguyen Thau Xuan , Nghiem Lien Thi Ha
Published: October 2021

Random lasers based on dye-doped silica nanoparticles are attracted for biomedical applications due to their biocompatibility and high brightness. Several laser structures including silica powder and film have been reported. However, the dependence of lasing characteristics including lasing threshold and emission wavelength on the laser size and working environment have not been explored. Here, we demonstrate and compare the lasing characteristics of dye-doped silica random lasers in air and water. These lasers present in thin structures, the so-called microslices, with a thickness of 1 µm and various dimensions from 30 to 300 µm. It is found that the lasing threshold (Ith) decreases with increasing laser size such as  for sample in the air and  for sample in water, where A the sample surface area. For a similar size, the lasing threshold of the sample in water is about 3-8 times higher than that of the sample in the air. In addition, the lasing peak wavelength exhibits a red-shift with increasing laser size. In the air, a shift of 8 nm is recorded when the sample surface area increases from 21×103 to 169×103 µm2. Furthermore, for a similar size, the lasing wavelength of the sample in the air is also red-shifted (13 nm in average ) compared with that of the sample in water. Our finding provides useful information for the use of silica-based random lasers in bioimaging and biosensing applications.
Excitation Spectra of Cubic Perovskite Titanates
Authors: Phuc Le Hong , Hien Nguyen Quang , Nguyen-Truong Hieu T. , Le Hung M.
Published: October 2021

We calculate excitation spectra of cubic perovskites ATiO3 (A = Ca, Sr, Ba, Pb). The calculations are performed within the time-dependent density functional theory, including local field effects. The theoretical calculations show that the perovskites have a plasmon mode at around 12 eV, which is not observed in experiments.