bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge and compliance with Covid-19 infection prevention and control measures among health workers in regional referral hospitals in northern Uganda: a cross-sectional online survey
Authors: Amanya Sharon Bright , Nyeko Richard , Obura Bonniface , Acen Joy , Nabasirye Caroline , Nakaziba Rebecca , Oyella Florence , Afayo Victor , Okwir Mark 
Published: February 2021

Background: Infection prevention and control (IPC) has increasingly been underscored as a key tool for limiting the transmission of coronavirus disease 2019 (Covid-19) and safeguarding health workers from infections during their work. Knowledge and compliance with IPC measures is therefore essential in protecting health workers. However, this has not been established among health workers in northern Uganda in light of the Covid-19 pandemic. The objective of this study was to determine the knowledge and compliance with Covid-19 infection prevention and control measures among health workers in regional referral hospitals in northern Uganda. Methods: An online cross-sectional descriptive study was conducted among 75 health workers in regional referral hospitals within northern Uganda. A structured questionnaire was distributed to health workers via WhatsApp messenger. Sufficient knowledge was considered at a correct response score of ≥80%, while adequate compliance was rated ≥75% of the maximum score. Data were analyzed using SPSS v21. Results: The majority of the health workers had sufficient knowledge (69%) and adequate compliance (68%) with Covid-19 IPC. Adequate compliance was significantly associated with training in Covid-19 IPC (p=0.039), access to Covid-19 IPC at workstations (p=0.036), and having strong institutional support (p=0.031). However, there was no significant relationship between knowledge and compliance with IPC (p=0.07). The socio-demographic characteristics of health workers, including age, sex, education level, occupation, working hours and work experience, had no statistically significant relationship with Covid-19 IPC knowledge or compliance. Conclusion: Our results show fairly good knowledge and compliance with Covid-19 IPC among health workers in northern Uganda. There is need for more training and provision of guidelines to promote compliance with Covid-19 IPC.
Reproducibility and reliability analysis of the Luk Distal Radius and Ulna Classification for European patients with adolescent idiopathic scoliosis
Authors: Houston James , Chiang Amy , Haleem Shahnawaz , Bernard Jason , Bishop Timothy , Lui Darren F. 
Published: February 2021

Purpose Current clinical and radiological methods of predicting a patient's growth potential are limited in terms of practicality, accuracy and known to differ in different races. This information influences optimal timing of bracing and surgical intervention in adolescent idiopathic scoliosis (AIS). The Luk classification was developed to mitigate limitations of existing tools. Few reliability studies are available and are limited to certain geographical regions with varying results. This study was performed to analyze reproducibility and reliability of the Luk Distal Radius and Ulna Classification in European patients. Methods This is a radiological study of 50 randomly selected left hand and wrist radiographs of patients with AIS referred to a tertiary referral centre. They were assessed for bone maturity using the Luk Distal Radius and Ulna Classification. Assessment was performed twice by four examiners at an interval of one month. Statistical analysis was performed using the intraclass correlation (ICC) method to determine the reliabilities within and between the examiners. Results In total, 50 radiographs (M:F = 13:37) with a mean age of 13.7 years (10 to 18) were assessed for reliability. The inter-rater ICC value was 0.918 for radius assessment and 0.939 for ulna assessment. The intra-rater ICC values for radius assessment ranged between 0.897 and 0.769 and between 0.948 and 0.786 for ulna assessment. There was near perfect correlation for both assessments. Conclusion This study provides independent evidence that the Luk Distal Radius and Ulna Classification is a reliable tool for assessment of skeletal maturity for European patients. Minimal clinical experience is required to reliably utilize it. Level of evidence IV
An Integrated Navigation Method Based on an Adaptive Federal Kalman Filter for a Rice Transplanter
Authors: Liao Juan , Wang Yao , Yin Junnan , Bi Lingling , Zhang Shun , Zhou Huiyu , Zhu Dequan 
Published: February 2021

HighlightsAn integrated GPS/INS/VNS navigation system was developed to improve navigation accuracy.An adaptive federal Kalman filter with information distribution factors was used to fuse navigation information.Detection of seedling row lines was achieved based on subregional feature points clustering.A modified rice transplanter was developed as an experimental platform for automatic navigation.Abstract. In this article, an integrated global positioning system (GPS), inertial navigation system (INS), and visual navigation system (VNS) navigation method based on an adaptive federal Kalman filter (KF) is presented to improve positioning accuracy for a rice transplanter operating in a paddy field. The proposed method used GPS/VNS to aid the INS and reduce the influence of the accumulated error of the INS on navigation accuracy. An adaptive federal KF algorithm was designed to fuse navigation information from different sensors. The information distribution factor of each local filter was obtained adaptively on the basis of its own error covariance matrix. Computer simulation and transplanter tests were conducted to verify the proposed method. Results showed that the proposed method provided accurate and reliable navigation information outputs and achieved better navigation performance compared with single GPS navigation and an integrated method based on a conventional federal KF. Keywords: Federal Kalman filter, GPS/INS/VNS, Information distribution factor, Information fusion, Integrated navigation.
Compact green Ti:sapphire astro-comb with a 43  GHz repetition frequency
Authors: Chae Eunmi , Kambe Eiji , Motohara Kentaro , Izumiura Hideyuki , Doi Mamoru , Yoshioka Kosuke 
Published: February 2021

A compact green astro-comb with a 43 GHz repetition rate is developed based on a Ti:sapphire optical frequency comb (OFC) and a mode-selecting cavity. The OFC’s large repetition rate of 1.6 GHz eases the requirements for the mode-selecting cavity. Unnecessary frequency modes of the OFC are suppressed down to

5
×

10

−
4

at 535–550 nm using a single mode-selecting cavity with 70 MHz linewidth. The radial velocity precision

σ
∼
1.4

m

/

s

is achieved at the high dispersion echelle spectrograph for the Okayama 188 cm telescope of the National Astronomical Observatory of Japan using our astro-comb. With further improvements of the mode-selecting cavity and removal of fiber modal noises, our system will provide a simple, compact, and precise astro-comb setup in the visible wavelength region.
Validation of the STANDARD Q COVID-19 antigen test in Vojvodina, Serbia
Authors: Ristić Mioljub , Nikolić Nataša , Čabarkapa Velibor , Turkulov Vesna , Petrović Vladimir 
Published: February 2021

Background
Since COVID-19 pandemic is a global crisis, tests with high sensitivity and specificity are crucial for the identification and management of COVID-19 patients. There is an urgent need for low-cost rapid antigen COVID-19 test with a good diagnostic performance. Although various antigen rapid detection tests are widely available, strong evidence of their usefulness in clinical practice are still limited. Therefore, our aim was to evaluate clinical performance of STANDARD Q COVID-19 Ag Test (SD Biosensor, Gyeonggi-do, South Korea).

Methods
The performance of the STANDARD Q COVID-19 Ag Test for the detection of SARS-CoV-2 antigen was evaluated in comparison to RT-qPCR results in 120 symptomatic patients (median age 49, IQR 36–70) who presented to health care facility in Novi Sad, Vojvodina, Serbia.

Results
Twenty five out of 120 samples have been tested positive using STANDARD Q COVID-19 Ag Test, and all of them were also positive on RT-qPCR. Overall, the STANDARD Q COVID-19 Ag Test showed sensitivity of 58.1% (95% CI 42.1–73.0) but it was higher in the early days of disease, when the highest viral loads were detected. During the first five days after the symptom onset, the sensitivity ranged from 66.7% to 100% and the pooled accuracy and Kappa values were high (0.92 and 0.852).

Conclusions
A strong agreement between performance of STANDARD Q COVID-19 Ag Test and RT-qPCR was observed during the first five days of illness, suggesting that this rapid antigenic test can be very useful for COVID-19 diagnosis in the early phase of disease.
The Mande Creation Myth,by Germaine Dieterlen, as a Historical Source for the Mali Empire
Authors: Jansen Jan , Fairhead James R. 
Published: February 2021

AbstractThis article proposes a new reading for Germaine Dieterlen’s classic text “The Mande Creation Myth,” and presents it as evidence for Kangaba’s prominent military role as ruler of the Niger and defender of the gold mines that for centuries provided the wealth of the Mali Empire. It is demonstrated that, although Dieterlen was in search of a unified cosmology, her informants in Kangaba provided answers that voiced Kangaba’s military concerns and claims as political heir of the medieval Mali Empire and ruler of the River Niger. The starting point of the analysis are new insights on how creation is envisioned in the West African savannah, with an emphasis on termite mounds, earth, and blacksmiths. These insights are compared to the fieldwork data that Dieterlen collected in 1953-55, which she used in 1955 for a publication on the Kamabolon ceremony in Kangaba and, under strikingly different personal circumstances, in 1957 in the article “The Mande Creation Myth.” The article explains why Dieterlen herself nor other researchers have never been able to reproduce neither her 1953-55 findings nor her 1957 findings by pointing to Kangaba’s raised prestige as a major historical site for a new Republic of Mali, which had acquired independence in 1960. Kangaba’s new position replaced the earlier focus on military rule on the Niger and defense of gold mines (in what had become the Republic of Guinée in 1958). This argument is substantiated by a recently discovered contemporary report of the 1961 Kamabolon ceremony, written by a leading contemporary intellectual, Mambi Sidibé.
A Influência das Edificações no Cálculo do Efeito Gravitacional das Massas Topográficas – Estudo de Caso na Cidade de Porto Alegre – RS (Brasil)
Authors: Ferraz Rodrigo da Silva , Souza Sérgio Florêncio de 
Published: February 2021

Um dos objetivos da Geodésia consiste no estudo do geoide e sua determinação é obtida através do conhecimento do campo de gravidade que envolve a distribuição de massas na superfície terrestre. A abordagem clássica para a solução do problema de valor de contorno da Geodésia (PVCG) visando a determinação do geoide assume que os efeitos associados à topografia sejam levados em consideração. A técnica de Modelagem da Topografia Residual (RTM, em inglês Residual Terrain Modelling) tem como objetivo a modelagem o campo de gravidade em função da distribuição de massas associada a topografia onde, nesse tipo de estudo, o conteúdo de alta frequência do espectro relacionado a gravidade é gerado através desse método de redução associado a um modelo digital de elevação (MDE) de alta resolução. Nesse contexto, o objetivo principal desta pesquisa consiste em calcular o valor do potencial gravitacional das massas topográficas oriundas de edificações existentes na cidade de Porto Alegre – RS juntamente com a anomalia de gravidade associada à topografia. Esse estudo foi desenvolvido a partir de uma base vetorial com mais de 200 mil edificações onde o potencial gravitacional foi calculado a partir de um MDE gerado através de dados LiDAR (light detection and ranging). Para auxiliar nos cálculos, foi estimado um modelo de densidades em função das dimensões de cada edificação existentes na base de dados. Assim, foram calculados o valor do potencial gravitacional utilizando os elementos de massa tesseroide, prisma e massa pontual e também o valor da anomalia de gravidade para distâncias de 1 km, 2 km, 5 km, 10 km e 20 km usando a técnica de modelagem RTM. A influência das massas das edificações, neste estudo, representou 10,62% do valor da anomalia de gravidade em comparação com o seu correspondente em relação ao solo.
Strategi Tindakan Preventif Kepolisian Melalui Komunikasi Massa Menangkal Gerakan Terorisme
Authors: Ritonga Muslimin 
Published: February 2021

Intolerant actions in the city of Palembang, according to Setara Institute data in 2018, show that Palembang is in the 53rd position as a tolerant city in Indonesia. The preservation of Palembang as one of the tolerant cities in Indonesia is something that needs to be jointly guarded by the government and the community. So that the government in this case through the police can involve the community in the process of preventing acts of terrorism, because they think that the approach by imposing the death penalty on terrorists does not always have implications for the decline in terrorism cases in Indonesia, especially in the city of Palembang. Preventive action can be taken by the police in various forms such as education through literacy in print and online media and can be done in the form of seminars and dialogues. This study is an interactive analysis model developed by Miles and Huberman, namely “We define analysis ass consisting of three concurrent flows of activity: data reduction, data display, and conslution drawing/verification” means that the analysis consists of three main activities that are interrelated. namely data reduction, data display, and conclusion/data verification. This study aims to show the efforts of the police in preventing criminal acts of terrorism in the city of Palembang with a preventive approach to society through mass communication, that in preventing terrorism, active participation from the community is also required.Tindakan intoleran di kota Palembang, dalam data Setara Institute pada tahun 2018 menunjukkan kota Palembang menempati posisi ke 53 sebagai kota toleran di Indonesia. Terjaganya Palembang sebagai salah satu kota toleran di Indonesia, merupakan hal yang perlu dijaga bersama antara pihak pemerintah dengan masyarakat. Sehingga pemerintah dalam hal ini melalui pihak kepolisian dapat melibatkan masyarakat dalam proses pencegahan terhadap tindak terorisme, karena beranggapan bahwa pendekatan dengan cara menjatuhkan hukuman mati pada pelaku teroris, tidak selalu berimplikasi pada menurunnya kasus terorisme di Indonesia, terkhusus di kota Palembang. Tindakan preventif dapat dilakukan oleh pihak kepolisian dengan berbagai bentuk seperti edukasi melalui literasi di media cetak dan online serta dapat dilakukan dengan bentuk seminar dan dialog. penelitian ini adalah analysis interractive model yang dikembangkan oleh Miles dan Huberman, yaitu “We define analysis ass consisting of three concurrent flows of activity: data reduction, data display, and conslution drawing/verification” artinya bahwa analisis terdiri dari tiga kegiatan utama yang saling berkaitan yaitu reduksi data, display data, dan penarikan kesimpulan/verifikasi data. Penelitian ini bertujuan untuk menunjukkan upaya pihak kepolisian dalam mencegah tindak pidana terorisme di kota Palembang dengan pendekatan preventif terhadap masyarakat melalui komunikasi massa, bahwa dalam mencegah terorisme juga diperlukan partisipasi aktif dari masyarakat.
Volunteering in the Tourism Industry of the Republic of Kazakhstan
Authors: BAIMBETOVA Assel , MUTALIYEVA Lyailya , KENZHIN Zhaxat , SEIDUALIN Darken , TLEUBERDIYEVA Saltanat , MUSSINA Kamshat 
Published: February 2021

The article deals with the specifics of volunteering in tourism industry of the Republic of Kazakhstan. Of particular importance is the problem of developing volunteering movement in tourism sphere of Kazakhstan, which is in the process of formation and integration. Developing volunteering in tourism for Kazakhstan is an important factor in ensuring its growth, forming positive image, creating favourable conditions for the tourism business, increasing awareness about the country, and improving the well-being of its people.
The relevance of the topic is that among various directions of tourism development, volunteering has a powerful, but underestimated resource for creating positive image of a country, solving social, economic and environmental problems, improving the quality of tourism services provided, helping the population in emergencies, different life situations, which may occur in the course of a travel. The purpose of this work is to analyse the theoretical aspects regarding the role of volunteering in tourism development, identifying its trends and problems, as well as developing scientifically based applied recommendations to increase the attractiveness of volunteering in tourism. The results obtained in the course of the study can be implemented in fostering volunteering development in tourism sphere.
Influence of Social Media on Enterprise Knowledge Sharing Based on Social Network Analysis
Authors: Deng Yongtao 
Published: February 2021

Abstract
Based on the social network analysis method, this paper studies the impact of corporate knowledge-sharing in social media, sorts out the relationship between corporate internal social capital, knowledge-sharing, and individual innovation behavior, and explores the reliability of the scale through exploratory factor analysis validity test to ensure the reliability and rationality of the questionnaire, using improved social networks to construct structural equation models and regression analysis to verify the research model and related assumptions, and found that social media tacit knowledge-sharing in structural capital, cognitive capital the intermediary effect in the influence of individual innovation behavior is remarkable. The sharing attitude has a broad intermediary role between the interactive relationship and the willingness to share. There is a partial intermediary role between the reciprocity and the willingness to share, the common language, and the willingness to share, the common vision, and the willingness to share.
Local Institutional Profile and the Antecedents of Entrepreneurial Intention
Authors: Monteiro Guilherme Fowler A. , Iwai Tatiana , Bruscato Bortoluzzo Adriana 
Published: February 2021

Abstract
We investigate the effects of the local institutional profile on the antecedents of entrepreneurial intention. First, we advance a conceptual model based on the theory of planned behavior and on institutional theory. In our model, local government policies, regional shared social knowledge and local value systems affect cognition of individuals with regard to entrepreneurial intention. We then test our model using structural equation modeling (SEM) based on a survey of 2150 respondents in Brazil. The country is particularly interesting for the analysis since it presents a continental dimension, being formed by five regions with different geographic, economic, and social characteristics. Our regression models corroborate our hypotheses. Perceived behavior control is a function of both the local cognitive dimension and the local regulatory dimension. The personal attitude is determined by all the local institutional dimensions (cognitive, regulatory, and normative dimensions). Subjective norms, in turn, are a function of the local normative dimension. This effect is interesting because it points to regional variability in the way individuals appreciate entrepreneurial activity and how this translates into a statistically significant difference in entrepreneurial intention among the country’s regions.
BioDWH2: an automated graph-based data warehouse and mapping tool
Authors: Friedrichs Marcel 
Published: February 2021

Abstract
Data integration plays a vital role in scientific research. In biomedical research, the OMICS fields have shown the need for larger datasets, like proteomics, pharmacogenomics, and newer fields like foodomics. As research projects require multiple data sources, mapping between these sources becomes necessary. Utilized workflow systems and integration tools therefore need to process large amounts of heterogeneous data formats, check for data source updates, and find suitable mapping methods to cross-reference entities from different databases. This article presents BioDWH2, an open-source, graph-based data warehouse and mapping tool, capable of helping researchers with these issues. A workspace centered approach allows project-specific data source selections and Neo4j or GraphQL server tools enable quick access to the database for analysis. The BioDWH2 tools are available to the scientific community at https://github.com/BioDWH2.
Convergence or not? Geography, history, and chance
Authors: Hock Hans Henrich 
Published: February 2021

AbstractA question that should be asked in all cases of proposed convergence areas is whether the observed similarities do in fact reflect convergent developments or are due to chance. This paper presents three case studies from South Asia which demonstrate that accidental similarities are more common than is often acknowledged. To rule out chance similarities, convergence accounts must be supported by fine-grained examinations of the geographical and historical evidence.
Cross-nanofin-based waveplate pixels for broadband hybrid polarization coding in near-field
Authors: Du Shuo , Liu Zhe , Sun Chi , Zhu Wei , Geng Guangzhou , Ye Haitao , Li Junjie , Gu Changzhi 
Published: February 2021

Abstract
As an inherent characteristic of light, polarization plays important roles in information storage, display and even encryption. Metasurfaces, composed of specifically designed subwavelength units in a two-dimensional plane, offer a great convenience for polarization manipulation, yet improving their integrability and broadband fidelity remain significant challenges. Here, based on the combination of various subwavelength cross-nanofins (CNs), a new type of metasurface for multichannel hybrid polarization distribution in near-field is proposed. Sub-wavelength CN units with various waveplate (WP) functionalities, such as frequency-division multiplexing WP, half-WP and quarter-WP are implemented with high efficiency in broadband. High-resolution grayscale image encryption, multi-image storage and rapid polarization detection are demonstrated by encoding the WP pixels into single, double and four channels, respectively. All these applications possess good fidelity in an ultrabroad wavelength band from 1.2 to 1.9 µm, and the high degree of integrability, easy fabrication and multifunction make the CN-shaped WP pixels a promising candidate in optical device miniaturization, quantum applications and imaging technologies.