bluuebunny/crossref_metadata_2025 huggingface dataset:
Real-time quantitative phase imaging by single-shot dual-wavelength off-axis digital holographic microscopy
Authors: Huang Meng , Qin Hongpeng , Jiang Zhuqing
Published: April 2021

A single-shot dual-wavelength digital holographic microscopy with an
adjustable off-axis configuration is presented, which helps realize
real-time quantitative phase imaging for living cells. With this
configuration, two sets of interference fringes corresponding to their
wavelengths can be flexibly recorded onto one hologram in one shot.
The universal expression on the dual-wavelength hologram recorded
under any wave vector orientation angles of reference beams is given.
To avoid as much as possible the effect of zero-order spectrum, we can
flexibly select their carry frequencies for the two wavelengths using
this adjustable off-axis configuration, according to the distribution
feature of object’s spatial-frequency spectrum. This merit is verified
by a quantitative phase imaging experiment for the microchannel of a
microfluidic chip. The reconstructed phase maps of living onion
epidermal cells exhibit cellular internal life activities, for the
first time to the best of our knowledge, vividly displaying the
progress of the nucleus, cell wall, cytoskeleton, and the substance
transport in microtubules inside living cells. These imaging results
demonstrate the availability and reliability of the presented method
for real-time quantitative phase imaging.
Towards perfect metallic behavior in optical resonant nanostructures
Authors: Verlhac Clément , Makhsiyan Mathilde , Haidar Riad , Primot Jérôme , Bouchon Patrick
Published: April 2021

Looking for a perfect metallic behavior is a crucial research line for metamaterials scientists. This paper outlines a versatile strategy based on a contrast of dielectric index to control dissipative losses in metal within waveguides and resonant nanostructures. This permits us to tune the quality factor of the guided mode and of the resonance over a large range, up to eight orders of magnitude, and over a broad spectral band, from visible to millimeter waves. An interpretation involving a low-loss equivalent model for the metal is developed. The latter is based on a Drude model, in which the dissipative parameter can reach very low values, which amounts to a nearly perfect metallic behavior. Finally, this concept is applied to a practical design that permits us to finely control the localization of dissipation in an absorbing photonic structure.
Effects of entrepreneurial orientation on social media adoption and SME performance: The moderating role of innovation capabilities
Authors: Fan Mingyue , Qalati Sikandar Ali , Khan Muhammad Aamir Shafique , Shah Syed Mir Muhammad , Ramzan Muhammad , Khan Raza Saleem
Published: April 2021

The increase of social media (SM) has led to continuous deviations in how day-to-day entrepreneurial activities can be carried out. Additionally, studies devoted to SM entrepreneurship and SM are relatively limited and fragmented in their focus. However there is growing interest from scholars, practitioners and academia for upcoming studies and exploration within small and medium-sized enterprises (SMEs) context. This research explores the impact of entrepreneurial orientation (EO) on SM adoption and SME performance in developing countries. We employed the resource-based view (RBV) as the foundation for developing the conceptual framework The present study employed a closed-ended questionnaire to collect data from SMEs located in Pakistan. Partial-least-squares-structural equation-modeling (PLS-SEM) was utilized for the analysis of 423 responses. The results proved a direct positive link between EO–SMEs performance, EO–SM adoption, SM adoption–SMEs performance, innovation capabilities (IC), and SME performance. Partial mediation was found between EO and SME performance, and the significant moderation effect of IC was found between SM adoption and SME performance. This paper has implications for practitioners and researchers regarding SM adoption in the SMEs. It builds an empirical, multi-dimensional hypothesized model, including mediating and moderating roles affecting the relationships.
Evaluation of association studies and a systematic review and meta-analysis of CYP1A1 T3801C and A2455G polymorphisms in breast cancer risk
Authors: Yang Chen , He Xiao-Feng
Published: April 2021

Background

Nine previous meta-analyses have been published to analyze theCYP1A1T3801C and A2455G polymorphisms with BC risk. However, they did not assess the credibility of statistically significant associations. In addition, many new studies have been reported on the above themes. Hence, we conducted an updated systematic review and meta-analysis to further explore the above issues.

Objectives

To explore the association on theCYP1A1T3801C and A2455G polymorphisms with BC risk.

Methods

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (The PRISMA) were used.

Results

In this study, there were 63 case–control studies from 56 publications on theCYP1A1T3801C polymorphism (including 20,825 BC cases and 25,495 controls) and 51 case–control studies from 46 publications on theCYP1A1A2455G polymorphism (including 20,124 BC cases and 29,183 controls). Overall, theCYP1A1T3801C polymorphism was significantly increased BC risk in overall analysis, especially in Asians and Indians; theCYP1A1A2455G polymorphism was associated with BC risk in overall analysis, Indians, and postmenopausal women. However, when we used BFDP correction, associations remained significant only in Indians (CCvs. TT+TC: BFDP < 0.001) for theCYP1A1T3801C polymorphism with BC risk, but not in theCYP1A1A2455G polymorphism. In addition, when we further performed sensitivity analysis, no significant association in overall analysis and any subgroup. Moreover, we found that all studies from Indians was low quality. Therefore, the results may be not credible.

Conclusion

This meta-analysis strongly indicates that there is no significant association between theCYP1A1T3801C and A2455G polymorphisms and BC risk. The increased BC risk may most likely on account of false-positive results.
The familial risk of infection-related hospitalization in children: A population-based sibling study
Authors: Miller Jessica E. , Carter Kim W. , de Klerk Nicholas , Burgner David P.
Published: April 2021

Objective

To assess the risk of severe childhood infections within families, we conducted a sibling analysis in a population-based cohort study with genealogical linkage. We investigated the sibling risk of hospitalization with common infections, a marker of severity. We hypothesized that having siblings hospitalized for infection would increase the proband’s risk of admission with infection.

Study design

We used population data on Western Australian live-born singletons and their siblings between 1980 and 2014. Measures of infection were infection-related hospitalizations from discharge diagnostic codes. Exposure was having a sibling who had an infection-related hospitalization. Outcomes were infection-related hospitalizations in the child/proband. Probands were followed until an infection-related hospitalization admission (up to the first three), death, 18th birthday, or end of 2014, whichever occurred first. Infection risks were estimated by adjusted Cox proportional hazard models for multiple events.

Results

Of 512,279 probands, 142,915 (27.9%) had infection-related hospitalizations; 133,322 (26.0%) had a sibling with a previous infection-related hospitalization (i.e. exposed). Median interval between sibling and proband infection-related hospitalizations was 1.4 years (inter-quartile range 0.5–3.7). Probands had a dose-dependent increase in risk if sibling/s had 1, 2, or 3+ infection-related hospitalizations (adjusted hazard ratio, aHR 1.41, 95% CI 1.39–1.43; aHR 1.65, 1.61–1.69; aHR 1.83, 1.77–1.90, respectively). Among siblings with the same clinical infection type, highest sibling risks were for genitourinary (aHR 2.06, 1.68–2.53), gastrointestinal (aHR 2.07, 1.94–2.19), and skin/soft tissue infections (aHR 2.34, 2.15–2.54). Overall risk of infection-related hospitalization was higher in children with more siblings and with older siblings.

Conclusion

In this population-based study, we observed an increased risk of infection-related hospitalization in children whose siblings were previously hospitalized for infection. Public health interventions may be particularly relevant in families of children hospitalized with infection.
Ticagrelor vs Clopidogrel in addition to Aspirin in minor ischemic stroke/ transient ischemic attack—Protocol for a systematic review and network meta-analysis
Authors: Zitikyte Gabriele , Roy Danielle Carole , Dhaliwal Shan , Lun Ronda , Hutton Brian , Shorr Risa , Dowlatshahi Dar
Published: April 2021

Introduction

Patients with minor ischemic stroke or transient ischemic attack represent a high-risk population for recurrent stroke. No direct comparison exists comparing dual antiplatelet therapy regimens—namely, Ticagrelor and Aspirin versus Clopidogrel and Aspirin. This systematic review and network meta-analysis (NMA) will examine the efficacy of these two different antiplatelet regimens in preventing recurrent stroke and mortality up to 30 days.

Methods and analysis

MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials (CENTRAL) will be searched with the assistance of a medical information specialist. Two independent reviewers will screen studies for inclusion; eligible studies will include randomized controlled trials that enrolled adults presenting with acute minor ischemic stroke or transient ischemic attack and compared one or more of the interventions against each other and/or a control. The primary outcomes will be recurrent ischemic stroke up to 30 days from symptom onset. Secondary outcomes will include safety outcomes (I.e. major bleeding and mortality), functional disability, and outcomes up to 90 days from symptom onset. A Bayesian approach to NMA will be implemented using the BUGSnet function in R Software. Between group comparisons for time-to-event (TTE) and dichotomous outcomes will be presented in terms of hazard ratios and odds ratios with 95% credible intervals, respectively. Secondary effect measures of treatment ranking will also be estimated.

Ethics and dissemination

No formal research ethics approval are necessary. We will disseminate our findings through scientific conference presentations, peer-reviewed publications, and social media/the press. The findings from this review will aid clinicians in decision-making on the choice of antithrombotic therapy in a high-risk stroke population and could be important in the development of future treatment trials and guidelines.

Registration ID with Open Science Framework:10.17605/OSF.IO/XDJYZ.
Satisfaction with remote teaching during the first semester of the COVID-19 crisis: Psychometric properties of a scale for health students
Authors: Pérez-Villalobos Cristhian , Ventura-Ventura Juan , Spormann-Romeri Camila , Melipillán Roberto , Jara-Reyes Catherine , Paredes-Villarroel Ximena , Rojas-Pino Marcos , Baquedano-Rodríguez Marjorie , Castillo-Rabanal Isidora , Parra-Ponce Paula , Bastías-Vega Nancy , Alvarado-Figueroa Débora , Matus-Betancourt Olga
Published: April 2021

Introduction

Due to the health crisis caused by the COVID-19 pandemic, 220 million college students in the world had to halt face-to-face teaching and migrate to what has been called Emergency Remote Teaching, using virtual media, but without adequate preparation. The way this has impacted the student body and its satisfaction with the training process is unknown and there are no instruments backed by specific validity and reliability studies for this teaching context. This is why this study aims to analyze the psychometric properties of the Remote Teaching Satisfaction Scale applied to Chilean health sciences students.

Method

Quantitative study by means of surveys. We surveyed 1,006 health careers undergraduates chosen by convenience sampling. They came from six Chilean universities, located over a distance of 3,020 kilometers and followed 7 different careers. Women comprised the 78.53%. They answered the Remote Teaching Satisfaction Scale online to evaluate their perception of the first Emergency Remote Teaching term in 2020.

Results

A descriptive analysis of the items showed a moderate to positive evaluation of the teaching. The Confirmatory Factorial Analysis showed an adequate adjustment of the theoretical four factors model to the data obtained (CFI = 0.959; TLI = 0.953; RMSEA = 0.040). Correlations among factors oscillated from r = 0.21 to r = 0.69. The measurement invariance analysis supported the Configural, Metric and a partial Scalar model. Differences were found in three of the four factors when comparing the first-year students with those of later years. Finally, the Cronbach’s α and McDonald’s ω coefficients were over 0.70.

Discussion

The results display initial psychometric evidence supporting the validity and reliability of the Remote Teaching Satisfaction Scale to assess academic satisfaction in Chilean health careers students. Likewise, it is seen that first-year students show higher satisfaction levels about the implemented teaching.
LOXL1 gene polymorphisms are associated with exfoliation syndrome/exfoliation glaucoma risk: An updated meta-analysis
Authors: Li Xiaoyan , He Jie , Sun Jian
Published: April 2021

Background

Single nucleotide polymorphisms (SNPs) in the gene encoding LOXL1 are risk factors for exfoliation syndrome and exfoliation glaucoma. This meta-analysis comprehensively investigated the association between LOXL1 gene polymorphisms (rs1048661, rs3825942, and rs2165241) and the risk of exfoliation syndrome/exfoliation glaucoma (XFS)/(XFG).

Methods

All eligible case-control studies, published before August 17, 2020, were searched on Medline (Ovid), PubMed, CNKI, EMBASE, and Wanfang databases.

Results

In total, 5022 cases and 8962 controls were included in this meta-analysis. Significant associations between LOXL1 gene polymorphisms and XFS/XFG risk was observed in the disease types-based subgroups. In addition, in the subgroup analysis of ethnicity, positive associations between LOXL1 gene polymorphisms (rs1048661, rs3825942, and rs2165241) and XFS/XFG risk were found in Caucasians. Furthermore, rs1048661 and rs3825942 polymorphisms were related to XFS/ XFG risk in Asians; however, no significant association was observed between the LOXL1 gene rs2165241 polymorphism and XFS/XFG risk in Asians. In addition, rs1048661 and rs3825942 correlated with XFS/XFG susceptibility in Africans.

Conclusions

Our results implicate LOXL1 gene polymorphisms as XFS/XFG risk factors, especially in Caucasians.
#MaskOn! #MaskOff! Digital polarization of mask-wearing in the United States during COVID-19
Authors: Lang Jun , Erickson Wesley W. , Jing-Schmidt Zhuo
Published: April 2021

The coronavirus disease 2019 (COVID-19) has caused an unprecedented public health crisis worldwide. Its intense politicization constantly made headlines, especially regarding the use of face masks as a safety precaution. However, the extent to which public opinion is polarized on wearing masks has remained anecdotal and the verbal representation of this polarization has not been explored. This study examined the types, themes, temporal trends, and exchange patterns of hashtags about mask wearing posted from March 1 to August 1, 2020 by Twitter users based in the United States. On the one hand, we found a stark rhetorical polarization in terms of semantic antagonism between pro- and anti-mask hashtags, exponential frequency increases of both types of hashtags during the period under study, in parallel to growing COVID-19 case counts, state mask mandates, and media coverage. On the other hand, the results showed an asymmetric participatory polarization in terms of a predominance of pro-mask hashtags along with an “echo chamber” effect in the dominant pro-mask group, which ignored the subversive rhetoric of the anti-mask minority. Notwithstanding the limitations of the research, this study provides a nuanced account of the digital polarization of public opinion on mask wearing. It draws attention to political polarization both as a rhetorical phenomenon and as a participatory process.
Strategies to reduce risk perception among grocery shoppers in the US: A survey study
Authors: Li Jie , Verteramo Chiu Leslie J. , Gómez Miguel I. , Bills Nelson L.
Published: April 2021

During the COVID-19 lockdown in the US, many businesses were shut down temporarily. Essential businesses, most prominently grocery stores, remained open to ensure access to food and household essentials. Grocery shopping presents increased potential for COVID-19 infection because customers and store employees are in proximity to each other. This study investigated shoppers’ perceptions of COVID-19 infection risks and put them in context by comparing grocery shopping to other activities outside home, and examined whether a proactive preventive action by grocery stores influence shoppers’ perceived risk of COVID-19 infection. Our data were obtained via an anonymous online survey distributed between April 2 and 10, 2020 to grocery shoppers in New York State (the most affected by the pandemic at the time of the study) and Washington State (the first affected by the pandemic). We found significant factors associated with high levels of risk perception on grocery shoppers. We identified some effective preventive actions that grocery stores implement to alleviate anxiety and risk perception. We found that people are generally more concerned about in-store grocery shopping relative to other out-of-home activities. Findings suggest that a strict policy requiring grocery store employees to use facemasks and gloves greatly reduced shoppers’ perceived risk rating of infection of themselves by 37.5% and store employees by 51.2%. Preventive actions by customers and businesses are critical to reducing the unwitting transmission of COVID-19 as state governments prepare to reopen the economy and relax restrictions on activities outside home.
(U)topías del pensamiento decolonial: Guamán Poma y Euroamérica
Authors: Orellana Rodrigo Castro
Published: April 2021

This article analyses some of the main aspects that characterize the genealogy of thought proposed by the so-called decolonial turn. The article focuses on a specific case: Walter Mignolo’s interpretation of the work of Guamán Poma de Ayala, Primer nueva corónica y buen gobierno (S. XVII). In this context, I will present a critique of the reduction made of Guamán to a frontier thinker whose hallmark would be to introduce the question of the coloniality of power. I will propose as an alternative approach the study of Primer nueva corónica as a cultural product of the Euro-American archive.
Music is music? Striking the balance in music education in Wales
Authors: Gardiner Paula , Kilby Rachel
Published: April 2021

Through the examination of past and current practice, survey and interview, this article discusses how music from the widest parameters may be included in mainstream education in Wales. In 2014, the Welsh Government commissioned Professor Graham Donaldson to review the curriculum and assessment arrangements in schools in Wales. The outcome, Successful Futures: Independent Review of Curriculum and Assessment Arrangements in Wales (2015), was adopted by the Welsh Government for implementation by 2021. This new curriculum and its approach to learning and teaching offers the opportunity to re-examine the provision of music in schools, outlining a significant shift from ‘…“learning about” to “learning to” with a growing skills focus and an emphasis on application and development of higher-order skills, particularly creativity (entrepreneurship) and digital literacy’ (: 18). This vision requires exploration and engagement in a greater diversity of music.
A flexible template for informal practical music lessons: A Welsh perspective
Authors: Cleaton Anne
Published: April 2021

There is a lack of scholarship on informal private popular music lessons compared with school and conservatoire teaching, and informal private music lessons have been viewed as lacking structure. Instrumental teachers often develop strategies from their own experiences, and there is a paucity of recognition of the processes that underpin teachers’ knowledge. This article brings into focus indicative examples of my own teaching experiences with my current student cohort, focusing on how specific approaches are informed by a general structure, where teaching approaches are tried, tested and developed. The article contributes to literature on informal popular music teaching developed by the likes of Schulman (1987) and Lucy . Key benefits identified in adopting a flexible template for guitar lessons include a growth in student confidence positively affecting their progress and engagement with music.
Pengaruh Padat Tebar terhadap Konsumsi Oksigen dan Respons Stres Ikan Cupang Alam (Betta imbellis)
Authors: Sinansari Shofihar , Prakoso Vitas Atmadi , Hayuningtyas Erma Primanita , Priadi Bambang , Sundari Sri , Kusrini Eni
Published: April 2021

Effect of Stocking Density on Oxygen Consumption and Stress Response in Crescent Betta (Betta imbellis). Stocking density is one of the determinant parameters for fish growth optimization in aquaculture systems due to its relationship with fish metabolism. Information about the impact of different stocking densities on crescent betta (Betta imbellis) metabolism was not available yet. This study was aimed to analyze the effect of stocking density on oxygen consumption, critical oxygen level, and stress responses in crescent betta.The study was carried out under three different stocking density treatments: 5, 10, and 15 fish/L with three replications using 2.74 ± 0.23 cm total length and 0.22 ± 0.05 g body weight tested fishes.The parameters observed were oxygen consumption, ventilation rate, blood glucose level, cortisol, and critical oxygen level. The result showed that the highest oxygen consumption was found at 5 fish/L stocking density treatment (3.01 ± 0.28 mg O2/g/h), which was significantly different from 10 fish/L (1.01 ± 0.21 mg O2/g/h) and 15 fish/L (0.92 ± 0.08 mg O2/g/h) stocking density treatments. Oxygen consumptions under hypoxic condition was not significantly different compared to normoxic condition.The ventilation rate tends to increase significantly along with the increasing of stocking densities. Critical oxygen levels were not significantly different among the treatments,with the value of 3.31 ± 0.65 mg/L, 3.14 ± 0.29 mg/L, and 2.83 ± 0.19 mg/L for stocking density of 5, 10, and 15 fish/L, respectively. The blood glucose level at 15 fish/L stocking density was significantly higher than others, whereas the cortisol levels was not significantly different among the treatments. The results of this study provided information that the increasing stocking density of cressent betta will decrease their metabolism activity and increase ventilation rate. However, the increase of ventilation rate was negatively correlated with oxygen consumption per breath at higher stocking densities due to decrease in fish activity; and higher stocking densities will decrease oxygen consumption. Based on the results, it can be concluded that the ideal stocking density for crescent betta is 5 fish/L. The increasing of stocking density will decrease oxygen consumption rates and increase the stress level of crescent betta.
Distribusi dan Kelimpahan Kista Pyrodinium bahamense di Perairan Rawan Marak Alga Berbahaya di Indonesia
Authors: Rachman Arief , Intan Mariana D. B. , Thoha Hikmah , Sianturi Oksto Ridho , Masseret Estelle
Published: April 2021

Distribution and abundance of Pyrodinium bahamense cyst in the harmful algal blooms risk waters in Indonesia. Pyrodinium bahamenseas Harmful Algal Blooms (HABs) is one of the rising environmental problems in the coastal areas of Southeast Asia, particularly in Indonesia. Cyst bank formed after the blooms of P. bahamense is a potential source for the future blooming events. Therefore, an effort to describe the distribution and abundance of P. bahamense cyst banks in Indonesian coastal waters is necessary as a part of the mitigation strategy against the negative impacts of those toxic dinoflagellate blooms. This study was done as a desk study, which included a literature study, reanalysed of previous research data, and reanalysed of preserved samples or stored raw samples. Data and samples used in this study were collected and analysed from part of past researches in Lampung Bay, Jakarta Bay, Cirebon coastal waters, and Ambon Bay. This study also included an analysis to determine the P. Bahamense HABs risk level in the studied areas based on the cyst density and distribution data. Results showed a low density of P. bahamense cyst in Lampung Bay and Jakarta Bay, with cyst density <50 cysts.g-1 wet sediment. In contrast, the bottom sediments of Ambon Bay and Cirebon coastal waters contained high cyst density, which reached >1,000 cysts.g-1 wet sediment. Based on those data, the P. Bahamense HABs risk in Jakarta Bay and Lampung Bay would be generally much lower compared to Ambon Bay and Cirebon waters. The existence of cyst banks in those coastal waters may indicate  a possibility of future blooms of P. bahamense.
A Rare Case of Vault Angiofibroma
Authors: R. Jayanthi , G.T Iysverya , Chandru Nishanthi
Published: April 2021

A 52-year-old female patient, para 2 live 2, who attained surgical menopause 10 years back, presented to the outpatient department (OPD) with complaints of white discharge per vagina for 6 months, which was watery in consistency and was not associated with foul smell or itching vulva. She had history of hysterectomy done for fibroid uterus 10 years back. On examination, she was afebrile and vital signs were within normal limits. Per abdomen examination, was normal, while, per speculum examination revealed a watery discharge per vaginum. The per vaginal examination revealed a firm, non-tender, globular mass felt arising from the vaginal vault and the mass did not bleed on touch. A globular mass of size 3 x 4 cms, pinkish white in colour, was seen occupying the whole of the vaginal vault with curdy white precipitates in the vaginal rugosities as well as over the mass.
As práticas educativas e o pedagogo hospitalar
Authors: Asinelli-Luz Araci , Lima-Berton Tatiane Delurdes de , Monteiro Michelle Popenga Geraim
Published: April 2021

O resgate do processo de humanização dos hospitais vem ao encontro da pedagogia hospitalar que alicerça e dá continuidade aos estudos daqueles que necessitam de atendimento escolar e que por alguma razão encontram-se em condições de enfermidades, que estejam impedidos temporariamente de retomar a normalidade da sua vida social, familiar e escolar. Nesse sentido, o presente estudo busca compreender as práticas educativas do educador/pedagogo hospitalar para promoção da Educação em ambientes hospitalares. Para isso, utilizou-se de uma pesquisa qualitativa, de cunho teórico, para a discussão sobre possíveis práticas educativas com base na Pedagogia Hospitalar. Pensa-se que tais práticas educativas no ambiente hospitalar podem favorecer a inclusão social, melhoria clínica de crianças e adolescentes e retomada dos estudos que foram interrompidos na escola, bem como enfatizar a produção de pesquisas na área.
Atendimento Escolar no Hospital Universitário da Universidade Federal do Maranhão: entre avanços e limites na formação inicial do pedagogo
Authors: Lima Maria Socorro Lucena , Rabelo Francy Sousa , Silva Marilize de Morais
Published: April 2021

Esta pesquisa visa compreender os avanços e os limites do atendimento escolar  no Hospital Universitário da Universidade Federal do Maranhão  através do Projeto Estudar, uma ação saudável. O aporte teórico-metodológico utilizou-se do levantamento bibliográfico, baseando-se em autores como, Fonseca (1999; 2008), Taam (2004), entre outros e da pesquisa de campo, cujo lócus foi o Projeto de Extensão supracitado e as técnicas de coleta de dados foram a observação participante e a entrevista semi-estruturada com alunas do Curso de Pedagogia,  participantes desta experiência como bolsistas e voluntárias. Os resultados apontaram como um dos avanços,  a participação efetiva das crianças nas atividades promovidas pelo atendimento escolar hospitalar no projeto reaproximando-as com o cotidiano escolar e quanto aos limites, tem-se a ausência de discussões sobre educação em espaços não escolares no currículo, da formação do pedagogo.
The Effect of Environmental Disclosure and Performance on Profitability in the Companies Listed on the Stock Exchange of Thailand (SET)
Authors: Wahyuningrum Indah Fajarini Sri , Amal Muhammad Ihlashul , Sularsih Suci
Published: April 2021

The main objective of this study is to determine the empirical evidence of the effect of environmental disclosure, environmental performance, company age, and company size on profitability. The purposive sampling method was used to determine the sample of companies and obtained 85 companies from a total population of 100 large companies listed on the Thailand Stock Exchange (SET) in 2018. The data analysis technique used was multiple linear regression analysis using analysis tool IBM SPSS Statistics version 26. The results of this study prove that environmental disclosure has a significant positive effect on profitability. Environmental performance and company size have a significant negative effect on profitability. On the other hand, company age is not proven to have a significant effect on profitability. Based on the research results, it can be concluded that more extensive environmental disclosure is able to increase the achievement of profitability. However, company age is not a factor affecting profitability. Meanwhile, company size and environmental performance as measured by total assets and the existence of ISO 14001 certifications are proven to reduce the level of company profitability. This study also has several limitations, including the time period which is limited to only one time period, namely 2018. It is expected that further studies can expand the time period by more than one year. This is since using a time period of more than one year can illustrate the effect of environmental disclosure and environmental performance, company age and company size on the profitability achieved by the companies.  In addition, it is expected that the results of this study can provide input to companies to be more concerned regarding company performance activities, especially on the environment because there are still many companies that have low levels of environmental disclosure even though environmental disclosure in Thailand is still voluntary.
Meninjau Penerapan Ambang Batas Pemilihan pada Sistem Pemilihan Umum Proporsional di Indonesia
Authors: Taufiqurrohman Moch. Marsa
Published: April 2021

Sejak dekade awal reformasi, sejumlah besar partai politik (parpol) telah didirikan. Hal ini menunjukkan bahwa Indonesia di era pasca-Soeharto tidak dapat menghalangi munculnya fragmentasi politik. Dengan mempertimbangkan sistem multi-partai ideal Sartori, pemerintah yang efisien harus mengadopsi pluralisme moderat di parlemen. Alih-alih mampu mendorong pluralisme moderat, hasil pemilihan umum (Pemilu) Indonesia setelah reformasi justru menghasilkan pluralisme ekstrem dengan partai-partai pemenang minoritas yang mengakibatkan pemerintahan yang lemah. Meskipun tidak ada ketentuan konstitusional tentang ambang batas pemilihan ini, dalam praktiknya, ambang batas pemilihan dipandang sebagai alternatif untuk menyederhanakan sistem multi-partai yang kompleks. Di sisi lain, penentuan jumlah persentase ambang batas pemilihan dilakukan tanpa metode dan argumen yang memadai. Dari Pemilu ke Pemilu persentase ambang batas pemilihan selalu berbeda-beda. Selain itu, para pembuat kebijakan hanya berpendapat bahwa semakin tinggi ambang pemilihan proses politik dan pengambilan keputusan akan lebih sederhana dan lebih efisien, tanpa dapat menjelaskan secara terukur angka ideal untuk setiap pemilihan dalam keadaan apa pun. Akibatnya, sistem ini dapat mengabaikan aspirasi pemilih yang suaranya sudah hangus tanpa sempat dihitung untuk konversi kursi DPR.
Strategi Gerakan Politik Keterlibatan: Tiga Pola Kerja Politik Aliansi Masyarakat Adat Nusantara (AMAN)
Authors: Teredi Ernestus Lalong
Published: April 2021

Kongres Aliansi Masyarakat Adat Nusantara (AMAN) yang diselenggarakan pada tahun 1999 merupakan momentum bangkitnya perjuangan masyarakat adat di Indonesia. Kebangkitan ini, disebabkan krisis dari berbagai kebijakan sebelumnya yang mengabaikan kehidupan masyarakat adat. Dari lanskap genealogi tersebut, tulisan ini memeriksa bagaimana dinamika dan strategi gerakan politik keterlibatan masyarakat adat di Indonesia. Tulisan ini menggunakan metode penelitian kualitatif dengan pendekatan analisis wacana. Temuan dalam tulisan ini, politik keterlibatan AMAN hadir karena krisis kebijakan yang tidak berpihak pada masyarakat adat. Mengisi krisis kebijakan tersebut, maka terdapat tiga pola politik keterlibatan AMAN yang dilakukan secara kontinu selama ini. Pertama keterlibatan akar rumput dengan tujuan menghidupkan kritisisme dan mengidentifikasi persoalan dalam kehidupan masyarakat adat. Kedua, ikut mengadvokasi kebijakan publik, yang bertujuan untuk menghadirkan kebijakan yang berpihak pada masyarakat adat. Ketiga, terlibat dalam pentas elektoral, dengan misi menghadirkan perwakilan yang paham persoalan dasar masyarakat adat. Dari keseluruhan temuan tersebut, benang merah yang dapat diambil yaitu pola gerakan politik keterlibatan AMAN berhasil membangun sikap kritis dan perlawanan dari komunitas masyarakat adat. Di sisi lain, gerakan politik keterlibatan AMAN mampu merumuskan kebijakan yang berpihak pada masyarakat adat serta mengutus kader ke jajaran politik struktural.
The Case of Sharon Considered from the Vantage Point of Interpersonal Defense Theory
Authors: Westerman Michael A.
Published: April 2021

As part of this project comparing analyses of the case of Sharon based on Interpersonal Defense Theory (e.g., Westerman, 2018, 2019) and Interpersonal Reconstructive Therapy (e.g., Benjamin & Critchfield, 2010), this paper considers the case from the vantage point of Interpersonal Defense Theory. The first half of the paper presents the theory’s novel approach to case formulation. It begins by explaining the kind of case formulations the Interpersonal Defense Theory calls for in general and then presents a formulation of Sharon’s case based on the theory, illustrating that formulation with an examination of a transcript of a session excerpt from her therapy. The second half of the paper discusses the theory’s implications for treatment, beginning with a presentation of its treatment implications in general and then turning to its specific implications for Sharon’s case. Overall, the paper shows that the theory sheds new light on how to understand Sharon’s problems, provides a possible explanation for why the treatment, which was based on Brief Adaptive Psychotherapy (Pollack, Flegenheimer, Kaufman, & Sadow, 1992), resulted in a poor outcome, and suggests a different therapeutic approach that might have been more successful.
Learning from a rapid transition to emergency remote teaching: Developing a typology of online business education designs
Authors: Huber Elaine , McEwen Celina , Bryant Peter , Taylor Matthew , Arthars Natasha , Boateng Henry
Published: April 2021

Many universities had to pivot their teaching into an online space in response to the COVID-19 health crisis. How can we leverage the lessons learned from our design of these spaces to provide superior student learning experiences? This study describes the development of a classification system to appraise our rapidly transitioned online units of study. Underpinned by active learning pedagogy, 234 online learning sites from a leading Australian Business School were reviewed and three types of sites emerged, content, student and teacher-centred. The quality of these online sites were evaluated using a modified framework from the literature focusing on elements of design across five domains. Findings indicated that the overall range of quality of sites was mirrored across all three types, with the majority categorised as ‘good’. Analysis of the design elements of this typology will help build capacity in the design of online learning environments and guide pedagogical practice in business education.
Computational studies of the mitochondrial carrier family SLC25. Present status and future perspectives
Authors: Pasquadibisceglie Andrea , Polticelli Fabio
Published: April 2021

The members of the mitochondrial carrier family, also known as solute carrier family 25 (SLC25), are transmembrane proteins involved in the translocation of a plethora of small molecules between the mitochondrial intermembrane space and the matrix. These transporters are characterized by three homologous domains structure and a transport mechanism that involves the transition between different conformations. Mutations in regions critical for these transporters’ function often cause several diseases, given the crucial role of these proteins in the mitochondrial homeostasis. Experimental studies can be problematic in the case of membrane proteins, in particular concerning the characterization of the structure–function relationships. For this reason, computational methods are often applied in order to develop new hypotheses or to support/explain experimental evidence. Here the computational analyses carried out on the SLC25 members are reviewed, describing the main techniques used and the outcome in terms of improved knowledge of the transport mechanism. Potential future applications on this protein family of more recent and advanced in silico methods are also suggested.
Evaluation of red blood cell parameters provided by the UF-5000 urine auto-analyzer in patients with glomerulonephritis
Authors: Mizuno Genki , Hoshi Masato , Nakamoto Kentaro , Sakurai Masayo , Nagashima Kazuko , Fujita Takashi , Ito Hiroyasu , Hata Tadayoshi
Published: April 2021

Objectives

The microscopic examination of hematuria, a cardinal symptom of glomerulonephritis (GN), is time-consuming and labor-intensive. As an alternative, the fully automated urine particle analyzer UF-5000 can interpret the morphological information of the glomerular red blood cells (RBCs) using parameters such as UF-5000 small RBCs (UF-%sRBCs) and Lysed-RBCs.

Methods

Hematuria samples from 203 patients were analyzed using the UF-5000 and blood and urine chemistries to determine the cut-off values of RBC parameters for GN and non-glomerulonephritis (NGN) classification and confirm their sensitivity to the IgA nephropathy and non-IgA nephropathy groups.

Results

The UF-%sRBCs and Lysed-RBCs values differed significantly between the GN and NGN groups. The cut-off value of UF-%sRBCs was >56.8% (area under the curve, 0.649; sensitivity, 94.1%; specificity, 38.1%; positive predictive value, 68.3%; and negative predictive value, 82.1%), while that for Lysed-RBC was >4.6/μL (area under the curve, 0.708; sensitivity, 82.4%; specificity, 56.0%; positive predictive value, 72.6%; and negative predictive value, 69.1%). Moreover, there was no significant difference in the sensitivity between the IgA nephropathy and non-IgA nephropathy groups (87.1 and 89.8% for UF-%sRBCs and 83.9 and 78.4% for Lysed-RBCs, respectively). In the NGN group, the cut-off values showed low sensitivity (56.0% for UF-%sRBCs and 44.0% for Lysed-RBCs).

Conclusions

The RBC parameters of the UF-5000, specifically UF-%sRBCs and Lysed-RBCs, showed good cut-off values for the diagnosis of GN.
IFCC interim guidelines on rapid point-of-care antigen testing for SARS-CoV-2 detection in asymptomatic and symptomatic individuals
Authors: Bohn Mary Kathryn , Lippi Giuseppe , Horvath Andrea R. , Erasmus Rajiv , Grimmler Matthias , Gramegna Maurizio , Mancini Nicasio , Mueller Robert , Rawlinson William D. , Menezes María Elizabeth , Patru Maria-Magdalena , Rota Fabio , Sethi Sunil , Singh Krishna , Yuen Kwok-Yung , Wang Cheng-Bin , Adeli Khosrow
Published: April 2021

With an almost unremittent progression of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections all around the world, there is a compelling need to introduce rapid, reliable, and high-throughput testing to allow appropriate clinical management and/or timely isolation of infected individuals. Although nucleic acid amplification testing (NAAT) remains the gold standard for detecting and theoretically quantifying SARS-CoV-2 mRNA in various specimen types, antigen assays may be considered a suitable alternative, under specific circumstances. Rapid antigen tests are meant to detect viral antigen proteins in biological specimens (e.g. nasal, nasopharyngeal, saliva), to indicate current SARS-CoV-2 infection. The available assay methodology includes rapid chromatographic immunoassays, used at the point-of-care, which carries some advantages and drawbacks compared to more conventional, instrumentation-based, laboratory immunoassays. Therefore, this document by the International Federation for Clinical Chemistry and Laboratory Medicine (IFCC) Taskforce on COVID-19 aims to summarize available data on the performance of currently available SARS-CoV-2 antigen rapid detection tests (Ag-RDTs), providing interim guidance on clinical indications and target populations, assay selection, and evaluation, test interpretation and limitations, as well as on pre-analytical considerations. This document is hence mainly aimed to assist laboratory and regulated health professionals in selecting, validating, and implementing regulatory approved Ag-RDTs.
Silica extraction from bauxite reaction residue and synthesis water glass
Authors: Zhao Yunlong , Zheng Yajie , He Hanbing , Sun Zhaoming , Li An
Published: April 2021

Bauxite reaction residue (BRR) produced from the poly-aluminum chloride (PAC) coagulant industry is a solid acidic waste that is harmful to environment. A low temperature synthesis route to convert the waste into water glass was reported. Silica dissolution process was systematically studied, including the thermodynamic analysis and the influence of calcium and aluminum on the leaching of amorphous silica. Simulation studies have shown that calcium and aluminum combine with silicon to form hydrated calcium silicate, silica–alumina gel, and zeolite, respectively, thereby hindering the leaching of silica. Maximizing the removal of calcium, aluminum, and chlorine can effectively improve the leaching of silicon in the subsequent process, and corresponding element removal rates are 42.81%, 44.15%, and 96.94%, respectively. The removed material is not randomly discarded and is reused to prepare PAC. The silica extraction rate reached 81.45% under optimal conditions (NaOH; 3 mol L−1, L S−1; 5/1, 75°C, 2 h), and sodium silicate modulus (nSiO2:nNa2O) is 1.11. The results indicated that a large amount of silica was existed in amorphous form. Precipitated silica was obtained by acidifying sodium silicate solution at optimal pH 7.0. Moreover, sodium silicate (1.11) further synthesizes sodium silicate (modulus 3.27) by adding precipitated silica at 75°C.
Characterization of mechanically alloyed Fe based and MoNiAl+Al2O3 reinforced composites
Authors: Osman Yilmaz S. , Teker Tanju , Eker Hüseyincan
Published: April 2021

Fe-MoNiAl-Al2O3 powders were mechanically alloyed by a SPEX type attritor. The Fe based composite samples were reinforced with complex mechanically alloyed Fe-MoNiAl-Al2O3 particles in different ratios and Fe matrix composites were obtained. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), elemental surface mapping and microhardness tests were used to analyze the microstructures of the composites. The sintered composites showed that thin Al2O3 particles were dispersed. High volume fractions of the reinforcement having nanometer dimensions were produced in metallic matrices. Additionally, as the content of Al2O3 increased, the micro-hardness increased, which indicates that fine Al2O3 particles had a reinforcing effect.
Migration and Reaction of Sulfate Ions in Concrete under Stray Current
Authors: Zhang Lu , Niu Ditao , Wen Bo , Peng Gang , Zhang Yongli
Published: April 2021

The article presents a study on the influence of stray current on the migration and reaction of sulfate ions in concrete. The amount of sulfate ions in concrete is determined using the barium sulfate weighing method. The thickness of the deterioration damage layer of concrete is studied using an ultrasonic flat measurement method, and the thickness prediction model of the concrete deterioration damage layer is established to consider the influence of the intensity of the stray current. The results indicate the following: (1) the greater the stray current is, the more obvious the effect; (2) the influence of the current intensity on the migration of sulfate ions in concrete is 1.55–2.57 times that of the control group without stray current; (3) under stray current, the ratio of the reaction amount of sulfate ions in the concrete to the total amount of sulfate ions is suppressed, whereas the ratio of the reacted sulfate ions to the total amount of sulfate ions increases from 58.8 to 74.5 % with an increase in the current intensity; finally, (4) under stray current and sulfate, the thickness of the concrete damage layer increases with an increase in the deterioration age and the current intensity. The influence coefficients of stray current on the sulfate ion migration and on the sulfate ion reaction are proposed, and the evolution equation of the amount of sulfate ions in the concrete under the action of stray current with the deterioration age is obtained.
Impact of Temperature on the Spray Characteristics of Jatropha Curcas Biodiesel and Diesel Fuel Blends
Authors: Deshmukh Gopal Kumar , Rehman Ameenur , Gupta Rajesh
Published: April 2021

There is an increasing demand of energy because of an increase in the number of vehicles with internal combustion engines, because of which industrial and automotive fields are concerned about fossil fuel depletion, environmental issues, and energy conservation. These challenges force the world to explore other alternative sources of energy. The extensive use of biodiesel as compression ignition engine fuel has further compelled the researchers to regulate the emission and improve the engine performance. Fuel spray behavior affects mixture formation, and this affects engine combustion and performance. This research work involves the evaluation of the relationship between spray parameters of used Jatropha curcas biodiesel fuel, including spray penetration, cone angle, and preheating temperature, compared with diesel fuel, conducted at ambient condition. In addition to this, the high-speed spray pattern photography is undertaken by using single-hole and multi-hole injectors. The spray behavior is analyzed through spray parameters such as spray cone angle and spray penetration for all test fuels. The fuel temperature has a strong relationship with spray behavior at high temperatures; as the fuel temperature increases, the spray tip penetration decreases due to the evaporation of the fuel having a low boiling point and good fuel atomization, which leads to smaller droplets and an increase in spray cone angle with the increase in temperature.