bluuebunny/crossref_metadata_2025 huggingface dataset:
Myths and facts about online mate choice. Contemporary beliefs and empirical findings
Authors: Schmitz Andreas , Sachse-Thürer Susann , Zillmann Doreen , Blossfeld Hans-Peter
Published: March 2021

With the increasing dissemination and usage of online mate choice, finding a partner via the Internet has attracted remarkable public attention in the last decade. Several, mostly negative prejudices toward online mate choice – especially regarding its risks and disadvantages – circulate constantly throughout the mass media and form public perceptions. This article presents common stereotypes on this (still) new phenomenon, derived from an investigation of newspapers online and offline, online guides, blogs, and discussion forums and confronts them with the empirical facts. Based on several descriptive analyses, we discuss whether and to what extent ten prevalent beliefs correspond to the empirical reality of finding a mate via the Internet in Germany.

Zusammenfassung

Mit ihrer wachsenden Verbreitung ist die Partnerwahl im Internet zu einem bemerkenswerten Gegenstand des öffentlichen Diskurses geworden. Viele, meist negativ konnotierte Annahmen über die Eigenschaften und den Ablauf der Partnerwahl im Internet, insbesondere hinsichtlich ihrer Risiken und Nachteile, zirkulieren heute in den Medien und beeinflussen deren öffentliche Wahrnehmung. In diesem Beitrag präsentieren wir weit verbreitete Stereotype zum (immer noch) neuen Phänomen der Partnerwahl im Internet. Diese Klischees und Vorurteile, die in (Online-) Zeitungen und Zeitschriften, Online-Ratgebern, Blogs und Diskussionsforen recherchiert wurden, werden mit empirischen Fakten konfrontiert. Basierend auf verschiedenen deskriptiven Analysen diskutieren wir, ob bzw. inwieweit zehn populäre Vorstellungen mit der empirischen Realität der digitalen Partnersuche in Deutschland übereinstimmen.
Die Beziehung zwischen Familienrecht und Human-/Sozialwissenschaften am Beispiel des Kindschaftsrechts
Authors: Salgo Ludwig
Published: March 2021

The relationship between the law of parent and child and the humanities/social sciences seems to be so obvious that a clarification and systematization of this relationship is regarded as unnecessary. The call for an integration of the humanities and the social sciences in legal studies and legal practice was very pronounced during the 1980s and 1990s. This integration has been partially realized back then, but was revoked later on. The need for taking findings from the humanities and social sciences in law studies, legislation, and legal practice into account is more relevant now than it was ever before. In the present treatise, only the disciplines’ interwoven areas pertaining to the law of parent and child can be identified. Regarding the law of parent and child, there is reasonable hope that legislation and legal practice by means of drawing on and integrating humanities’ and social sciences’ methods and knowledge bases may be able to find alternatives that meet the best interest of the child (or at least constitute the least detrimental alternative).

Zusammenfassung

Die Beziehung zwischen Kindschaftsrecht und den Human-/Sozialwissenschaften ist so offensichtlich, dass eine Klärung und Systematisierung dieses Verhältnisses überflüssig schien. Der Ruf nach einer Integration der Human- und Sozialwissenschaften in Rechtswissenschaft und in Rechtsanwendung war in den 1970er und 1980er Jahren des vergangenen Jahrhunderts en vogue; sie wurde in Ansätzen verwirklicht, aber auch wieder zurückgenommen. Die Notwendigkeit, Erkenntnisse der Human-/Sozialwissenschaften in der Familienrechtswissenschaft, der Gesetzgebung und der Rechtspraxis zu beachten, ist aktueller denn je. In dieser Abhandlung können lediglich die Berührungsbereiche am Beispiel des Kindschaftsrechts aufgezeigt werden. Für das Kindschaftsrecht besteht die berechtigte Hoffnung, dass Gesetzgebung und Rechtsanwendung unter Heranziehung und Einbeziehung human-/sozialwissenschaftlicher Methoden und Wissensbestände noch am ehesten eine dem Wohl des Kindes am besten gerecht werdende ‒ besser: eine dem Wohl des Kindes am wenigsten schädliche ‒ Alternative finden.
Väter und Berufstätigkeit – Einführung in das Schwerpunktthemenheft
Authors: Buschmeyer Anna , Müller Dagmar
Published: March 2021

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Élevage de précision : De nouvelles informations utiles pour la décision ?
Authors: FAVERDIN Philippe , ALLAIN Clément , GUATTEO Raphaël , HOSTIOU Nathalie , VEISSIER Isabelle
Published: March 2021

Les nouvelles technologies des capteurs, de la communication et du traitement des données ont fait leur entrée dans les élevages. Elles constituent une nouvelle source d’informations à la fois plus nombreuses et diversifiées, à plus haute fréquence, sur des durées plus longues et pour plus d’entités. Elles soulèvent dans le même temps des problèmes de qualification, de fiabilité et de maintenance des informations qui restent largement à explorer. Dans la théorie de la décision, le terme information ne concerne que ce qui est susceptible d’avoir un impact sur la décision. Lorsque les informations acquises par des dispositifs automatiques se substituent à des informations obtenues par des activités de surveillance ou de mesure manuelles, ces dispositifs trouvent rapidement leur place s’ils sont fiables. À l’opposé, pour d’autres informations concernant les alertes de santé, le bien-être ou l’environnement, les dispositifs sont encore peu utilisés et leur intégration dans des outils performants d’aide à la décision est encore insuffisante. De plus, aujourd’hui, l’information sort du cadre strict de l’élevage. Les consommateurs veulent savoir d’où vient leur aliment, comment il a été produit, dans quel respect de l’environnement ou du bien-être animal, avec des garanties sur ces informations. En conclusion, les nouvelles technologies de l’information permettent l’accès à beaucoup de nouvelles informations en élevage, mais avec une idée encore trop imprécise de leurs utilisations dans les processus de décision de l’éleveur ou d’autres acteurs.
Teachers' Beliefs About the Role of Digital Educational Re-Sources in Their Educational Practice
Authors: Mulet Ivan Alberola , Martínez Marcos Jesús Iglesias , Cabezas Inés Lozano
Published: March 2021

Digital Educational Recourses (DER) have undergone a rapid evolution and integration into the educational contexts. Teachers play a fundamental role in incorporating technology into their classrooms, so it is important to identify the value that teachers on DER and reflect on the implications for their practice. Through the qualitative methodology the necessary data is obtained with open-response inter-views with teachers. This dataset was analysed and categorised using AQUAD. The results suggest that teachers acknowledge the importance of integrating digital re-sources into their classrooms, although there was no consensus regarding the appropriate level at which to do so. Further the inter-views revealed that younger teachers tend to use more self-elaborated or selected resources. Teachers noted the benefits of using technology, especially in regard to maintaining student motivation, how-ever they also highlighted a number of extrinsic challenges and limitations. The results indicate there is a relationship between teachers’ perceptions and their practice, although this could be improved.
A Stochastic Condensation Mechanism for Inducing Underdispersion in Count Models
Authors: Tovissodé Chenangnon Frédéric , Glele Kakai Romain
Published: March 2021

It is quite easy to stochastically distort an original count variable to obtain a new count variable with relatively more variability than in the original variable. Many popular overdispersion models (variance greater than mean) can indeed be obtained by mixtures, compounding or randomlystopped sums. There is no analogous stochastic mechanism for the construction of underdispersed count variables (variance less than mean), starting from an original count distribution of interest. This work proposes a generic method to stochastically distort an original count variable to obtain a new count variable with relatively less variability than in the original variable. The proposed mechanism, termed condensation, attracts probability masses from the quantiles in the tails of the original distribution and redirect them toward quantiles around the expected value. If the original distribution can be simulated, then the simulation of variates from a condensed distribution is straightforward. Moreover, condensed distributions have a simple mean-parametrization, a characteristic useful in a count regression context. An application to the negative binomial distribution resulted in a distribution allowing under, equi and overdispersion. In addition to graphical insights, fields of applications of special cases of condensed Poisson and condensed negative binomial distributions were pointed out as an indication of the potential of condensation for a flexible analysis of count data
Black Holes or an Objects without Event Horizon?
Authors: Verozub Leonid
Published: March 2021

The paper substantiates the possibility that objects that we usually identify with black holes are self-gravitating, fully or partially degenerate Fermi gas. This follows from the modification of Einstein's equations, which is based on a mathematical fact that the author of the GR could not have known in his time.
PERBANDINGAN BIAYA PEMAKAIAN LISTRIK MENGGUNAKAN SISTEM PASCABAYAR DENGAN SISTEM PRABAYAR PADA LISTRIK RUMAH TANGGA
Authors: Gusti Putri Amelia , Wadjdi Faried , Soeprijanto
Published: March 2021

Abstract 

This study aims to determine the behaviour of electricity consumption on a postpay system, the behaviour of electricity consumption on a prepaid system, and get a cost comparison analysis data of electricity consumption on a postpay system with prepaid system on household electricity. The population of this research is 30 consumers of postpay system 1300 VA and 30 consumers of prepaid system 1300 VA in RW 07 Tomang Grogol Petamburan District West Jakarta by using qualitative research methods to the behaviour the behaviour of electricity consumption on a postpay system, and thebehaviour of electricity consumption on a prepaid system, and quantitative research methods to get a cost comparison analysis data of electricity consumption on a postpay system with prepaid system on household electricity. This research instruments used analog kWh meter, digital kWh meter, field observation, questionnaire, calculations, and documentation. The average of electricity consumption on a postpay system 1300 VA is Rp 499.343. The average of electricity consumption on a prepaid system 1300 VA is Rp 382.935. To test the hypothesis in this research used test requirements, is normality test, homogeneity test, and t-test. The result is t-./0!1 < t/3456or 1,224 < 2,00172, it’s mean there isn’t difference in cost of electricity consumption on a postpay system 1300 VA and cost of electricity consumption on a prepaid system by comparison 1:1.

 

Abstrak

Tujuan penelitian ini adalah untuk mengetahui perilaku pemakaian listrik menggunakan sistem pascabayar, perilaku pemakaian listrik menggunakan sistem prabayar, dan mendapatkan data analisis perbandingan biaya pemakaian listrik menggunakan sistem pascabayar dengan sistem prabayar pada listrik rumah tangga. Populasi penelitian ini adalah 30 konsumen listrik sistem pascabayar 1300 VA dan 30 konsumen listrik prabayar di RW 07 Kelurahan Tomang Kecamatan Grogol Petamburan Jakarta Barat dengan menggunakan metode penelitian kualitatif untuk perilaku pemakaian listrik menggunakan sistem pascabayar dan perilaku pemakaian listrik menggunakan sistem prabayar, dan metode penelitian kuantitatif untuk data analisis perbandingan biaya pemakaian listrik menggunakan sistem pascabayar dengan sistem prabayar. Instrumen penelitian ini menggunakan kWh meter analog, kWh meter digital, observasi lapangan, kuesioner, perhitungan, dan dokumentasi. Hasil rata-rata biaya hasil observasi listrik pascabayar 1300 VA adalah Rp 499.343. Hasil rata-rata biaya hasil observasi listrik prabayar 1300 VA adalah Rp 382.935. Untuk menguji hipotesis dalam penelitian ini digunakan uji persyaratan, yaitu uji normalitas, uji homogenitas, dan uji-t. Didapatkan t-./0!1 < t/3456atau 1,224 < 2,00172 yang berarti tidak ada perbedaan biaya hasil observasi listrik pascabayar 1300 VA dan biaya hasil observasi listrik prabayar 1300 VA dengan perbandingan 1:1.

observasi listrik prabayar 1300 VA dengan perbandingan 1:1
PENGARUH KETEBALAN BATU ANDESIT TERHADAP KELUARAN TERMOELEKTRIK
Authors: Nugraha Ary Akbar , Massus Subekti  , Imam Arif Rahardjo
Published: March 2021

Abstract.

This research aimed to create and utilize video-based learning media on motor control course and also to determine whether the video-based learning media on motor control course is effective or not. The making of the video-based learning media using several stages, namely, literature study, analysis needs, product planning, product making, instrument making feasibility and feasibility studies that are conducted by the experts, media specialists and students in order to determine the feasibility of the media created. Furthermore, to test the effectiveness of video-based learning media on motor control course, students are given the post- test questions that the validity and reliability have previously been tested by using an experimental model.

The results of the feasibility test got a score > 80%, subject experts got a score of 94.23%, media experts 91,66%, and students 86.13%. The results of the feasibility test obtained, video-based learning media on motor control course is said to be very good and fit for use as a media of learning. The average value of students post test using a video-based learning media is 83, while students who do not use a video-based learning media have an average of 80.56. These data showed that value of post test results of motor control course that uses video-based learning media is higher than value of post test results that does not use a video-based learning media. The difference in post test results show that a video-based learning media on motor control course is an effective media of learning.

Abstrak

Tujuan  penelitian  ini  adalah  untuk  mengetahui  pengaruh  ketebalan  batu  andesit  terhadap  keluaran termoelektrik. Penelitian ini menggunakan metode penelitian eksperimen dengan pendekatan kuantitatif. Subjek penelitian ini ialah ketebalan batu andesit. Ketebalan batu andesit yang digunakan yaitu ketebalan 1 cm, 2 cm, dan 3 cm. Penelitian ini dilakukan pengujian laju kalor konduksi dan keluaran termoelektrik berdasarkan ketebalan batu andesit. Teknik analisis data yang digunakan yaitu analisis deskriptif dengan teknik pengumpulan data yaitu observasi laboratorium dan observasi lapangan. Hasil penelitian ini menunjukkan bahwa batu andesit ketebalan 1 cm menghasilkan laju kalor konduksi tertinggi dibandingkan ketebalan 2 cm dan 3 cm. Begitu juga dengan keluaran yang dihasilkan termoelektrik. Batu andesit ketebalan batu 1 cm menghasilkan keluaran paling besar dibandingkan ketebalan batu 2 cm dan 3 cm. Tegangan keluaran V0 (tanpa beban) dan V1 (dengan hambatan 100 ohm) yang dihasilkan termoelektrik pada ketebalan batu 1 cm berturut- turut sebesar 1.40 V dan 1.08 V, ketebalan batu 2 cm sebesar 1.37 V dan 0.98 V, dan ketebalan batu 3 cm sebesar 1.22 V dan 0.94 V. Berdasarkan hasil data pengujian tersebut dapat disimpulkan bahwa ada pengaruh ketebalan batu andesit terhadap keluaran termoelektrik.
Gender Equality and Equity with Mubadalah Concept and Its Implementation in Islamic Education
Authors: Werdiningsih Wilis , Natsir Ahmad
Published: March 2021

Gender equality study is the study that will continously be discussed in human life. The study of gender examines the diverse roles of women and men in community life. The concept of mubadalah is of the new studies in gender equality. The concept of mubadalah is way of looking at two relations, namely man and woman, in which both of them as dignified human beings who are able to take advantages of all aspects of life for their good. Education is an important means of educating people who are knowledgeable and have noble character. Gender-based education is the foundation in creating a gender responsive young generation. This study aims to examine more deeply the concept of mubadalah and its implementation in Islamic education. This study used qualitative approach and the type of this research is library research. Data were obtained from various sources relate to the concept of mubadalah and Islamic education. The results show that the concept of mubadalah is one of the concepts of gender equality which can be used as a reference for understanding gender equality and equity that seeks to see women and men as servants of Allah swt. which is the subject of the texts in Al-Qur’an as well as in their interpretation. Education in an Islamic perspective becomes a forum for teaching gender equality through the design of a gender responsive education component.
Counseling of Osing: a Counseling Based on Local Wisdom Represented in Lontar Yusuf Manuscript
Authors: Rofiq Arif Ainur , Mustaqim Muhamad , Hamid Abdulloh
Published: March 2021

Counseling has been a need for people all over the world to the present day. This article will discuss discourses and practices of counseling in Osing as illustrated in Lontar Yusuf Manuscript. The study applies a qualitative approach with the technique of content analysis. This article argues that counseling has not only been a dominant discourse and practice of the modern society in the West but also a cultural wealth in the traditional society in Indonesia, as can be seen in Banyuwangi people (Osing). This article further argues that traditional local values of Osing—such as moco saloko (passing on God’s teachings through songs), ngedapteyan (being aware, patient, and resilient), angering sang putri (relieving sorrow), and munajah (praying to God)—has been a foundation for discourses and practices of Osing which can develop awareness of basic concepts of counseling and therapeutic techniques based on the importance of religion and godliness. The result of this study shows that counseling based on local wisdom of Osing can contribute to enrich discourse and practices of counseling in the modern era.
Biconvex Patellar Components
Authors: Hines Jeremy T. , Lewallen David G. , Perry Kevin I. , Taunton Michael J. , Pagnano Mark W. , Abdel Matthew P.
Published: March 2021

Background:

The optimal strategy to address osseous deficiencies of the patella during revision total knee arthroplasty (TKA) remains controversial. One possible solution is a cemented biconvex patellar component used such that the non-articular convexity both improves fixation and makes up for bone loss. The aim of this study was to determine the outcomes of the use of biconvex patellar components in a large series of revision TKAs.

Methods:

From 1996 to 2014, 262 revision TKAs were performed at a single institution using a biconvex patellar component. Implant survivorship, clinical and radiographic results, and complications were assessed. The mean patient age at the TKA revision was 69 years, and 53% of the patients were female. The mean follow-up was 7 years.

Results:

The 10-year survivorship free of revision of the biconvex patellar component due to aseptic loosening was 96%. The 10-year survivorship free of any revision of the biconvex patellar component was 87%. The 10-year survivorship free of any rerevision and free of any reoperation was 75% and 70%, respectively. The mean Knee Society Score (KSS) improved from 45.4 before the index revision to 67.7 after it. The mean residual composite thickness seen on the most recent radiographs was 18.1 mm. In addition to the complications leading to revision, the most common complications were periprosthetic patellar fracture (6%), of which 3 required revision; superficial wound infection (6%) requiring antibiotic therapy only or irrigation and debridement; and arthrofibrosis (3%).

Conclusions:

In this cohort of 262 revision TKAs, biconvex patellar components used to treat marked patellar bone loss demonstrated excellent durability with a 10-year survivorship free of patellar rerevision due to aseptic loosening of 96%. The biconvex patellar components were reliable as evidenced by substantial improvements in clinical outcomes scores and a low risk of complications.

Level of Evidence:

Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Dyslipidemia and severe periodontitis among patients with type 2 diabetes
Authors: Jiménez-Corona María , Falcón-Flores José , Borges-Yáñez Aída , Castrejón-Pérez Roberto , Jiménez-Corona Aída
Published: March 2021

Not available
Impact of Relaxation of Low-Sulfate Seawater Parameters on Scaling Risk
Authors: Al Kalbani Mandhr , Al Shabibi Hatem , Ishkov Oleg , Silva Duarte , Mackay Eric , Baraka-Lokmane Salima , Pedenaud Pierre
Published: March 2021

Injection of low-sulfate seawater (LSSW) instead of untreated full-sulfate seawater (FSSW) is widely used to mitigate barium sulfate scaling risk at the production wells. LSSW injection may no longer be required when the barium concentrations in the produced water drop below a certain threshold. Such a trigger value could be estimated from the barium sulfate precipitation tendency. Relaxation of requirements for the sulfate reduction plant (SRP) can significantly reduce operational costs. This study investigates the impact of several parameters on the timing and degree of relaxation of the output sulfate concentration by the SRP. Finally, the optimal switching strategy is proposed for a field case.

The strategy for switching from LSSW to FSSW (e.g., time and method; direct or gradual increase in the sulfate concentration) was initially investigated using generic 2D areal and vertical models. The sensitivity study included the impact of reservoir heterogeneity and the initial barium and sulfate ion concentrations. Findings were later applied on a full-field reservoir simulation model followed by a mineral scale prediction software to investigate the specific switching strategy for a field that has multiple wells and significantly more complex heterogeneity.

The results show that barium concentrations in the formation brine affect the choice of switching time more than the output sulfate concentration produced by the SRP. The degree of heterogeneity around the producers also has a significant impact on the switching time. Another parameter is the contrast in the permeability between layers; higher contrast allows a longer period of coproduction of the scaling ions and thus delays the switching time. In the field case, switching to FSSW at early times allows higher consumption of barium ions because of its in-situ precipitation. Barium is no longer a limiting ion, and so a higher degree of deep reservoir precipitation reduces the requirement for prolonged LSSW injection. Another strategy is a gradual relaxation of LSSW output, which allows even earlier buildup of the injected sulfate concentration compared with the direct FSSW switch.

The study investigates the reservoir parameters that affect sulfate relaxation of LSSW injection for a field. After the proposed workflow, the optimal relaxation strategy can be designed for other field cases.
miR-124-3p enhances dendritic cell-mediated anti-tumor immunity by targeting CYLD/4-1BBL pathway
Authors: Li Wujin , Lei Yujie , Chen Yangming , Chen Kai , Huang Yunchao , Jiang Guicheng , Zhang Jiguang , Guo Longhua , Lin Xing
Published: March 2021

Background: MicroRNAs play important roles in dendritic cell (DCs)-mediated immunity, but their specific functions in lung cancer remain unclear.Objective: To investigate miR-124-3p regulation of DC-mediated immune response via CYLD/4-1BBL pathway, and the inhibitory effect of miR-124-3p on lung cancer.Methods: DCs were cultured and amplified in vitro, and then transfected with miR-124-3p mimic, miR-124-3P inhibitor, or siRNA CYLD. Double luciferase reporter genes were used to detect the target relationship between miR-124-3p and CYLD. qRT-PCR and western blotting were used to detect the expression levels of CYLD and 4-1BBL. Flow cytometry was used to assess the proliferation rate of CD4+ T cells co-cultured with untransfected DCs and those transfected with miR-124-3p mimic or miR-124-3p inhibitor. C57BL/6 tumor bearing mice, implanted with LL/2 lung adenocarcinoma cells, were administered DCs transfected with the miR-124-3p mimic or untransfected DCs. The tumor size and weight of mice were then measured. Results: miR-124-3p and CYLD3’UTR contained target-binding site, and overexpression of miR-124-3p enhanced the expression of CYLD and 4-1BBL. CD4+ T cells co-cultured with miR-124-3p mimic-transfected DCs showed significantly increased proliferation. In tumor-bearing mice, tumor inhibition rate was 73.5%, and tumor volume and weight were significantly decreased after the administration of DCs containing the miR-124-3p mimic.Conclusions: The expression of CYLD was regulated by miR-124-3p, which, in turn, increased the expression of 4-1BBL. miR-124-3p regulated DCs function via CYLD/4-1BBL cascade. miR-124-3p plays important roles in DCs-induced T cells, thereby enhancing anti-tumor immunity.
Multi-Band Heterogeneous Wireless Network Architecture for Industrial Automation: A Techno-Economic Analysis
Authors: Manjunatha Koushik Araseethota , Agarwal Vivek
Published: March 2021

To attain automation across different applications, industries are beginning to leverage advancements in wireless communication technologies. A "one-size-fits-all" solution cannot be applied since wireless technologies are selected according to application needs, quality of service requirements, and economic restrictions. To balance the trade-off between technical and economic requirements, a multi-band heterogeneous wireless network architecture is presented and discussed in this paper. Wireless local area network (WLAN) and distributed antenna system (DAS) with Long Term Evolution (LTE) are considered as the backbone for the multi-band heterogeneous network into which other wireless technologies can be integrated. The technical and economic feasibility of the network are evaluated through a techno-economic analysis (TEA). The economic feasibility of the proposed network is measured in terms of net present value while the technical feasibility is measured in terms of network throughput and latency. Finally, network performance for DAS with LTE and WLAN are verified using an NS3 simulator for machine-to-machine, real-time video, and high-definition video data transmissions. The TEA analysis showed that the number of DAS units required to achieve technical feasibility is less than WLAN units, but the overall cost of DAS units are higher compared to WLAN units, even without taking into consideration industrial, scientific, and medical band technologies.
A 3 – 18 GHz UWB Antenna with modified feed-line
Authors: Itapu Srikanth
Published: March 2021

A Co-Planar Waveguide fed circular ultra-wide band antenna with modified ground-plane and feedline is designed on a FR4 (ϵr=4.3) substrate of thickness 0.01λ0. The proposed antenna exhibits an overall impedance bandwidth ranging from 2.99 GHz to 18.0 GHz and beyond (with S11< -10 dB). Design parameters have been optimized to achieve the UWB bandwidth. The measured radiation patterns of this antenna are omnidirectional in H- plane and bidirectional in E-plane. An extended impedance bandwidth is achieved as a result of modified feed-line. The proposed antenna can be used for medical imaging and urban IoT applications.
A Robust Fault-Tolerance Scheme with Coverage Preservation for Planar Topology based WSN
Authors: Aghbari Zaher Al , V Pravija Raj P , Khedr Ahmed M
Published: March 2021

Maintaining prolonged service lifetime and adequate quality of sensing coverage are the key challenges
in constructing Wireless Sensor Network (WSN) based applications. As such networks usually
operate in inhospitable and hostile environment, failures are ineludible and providing resilience is a necessity.
However, it is challenging to satisfy the conflicting problems of enhancing energy efficiency and
fault tolerance simultaneously. Fault-tolerance is a significant requirement while designing WSN. It is
crucial to detect the failures in advance and take necessary measures to maintain durable and efficient
functioning of the network. Generally, in the existing face structured WSNs, node faults and failures can
induce the formation of coverage holes, disrupt the face structure and consequently curtail the application
performance. The coverage quality will affect the monitoring effectiveness of tracking applications,
e.g., a moving target tracking. Moreover, node failures can cause the network to be partitioned, further
reducing the accuracy in tracking. In this paper, we propose a robust fault-tolerance scheme with coverage
preservation using a face structured WSN topology (FCAFT ). The key objective of the proposed
FCAFT scheme is to sustain the performance of the network by timely healing the faults in the network,
to enhance the durability and reliability of the WSN. The results of simulation and comparison with
existing methods reveal that FCAFT is efficacious in sustaining the coverage and enhancing the service
lifetime of WSN, which is a necessity for critical monitoring and tracking applications of WSNs.
Survey on Diagnosing CORONA VIRUS from Radiography chest X-ray images using Convolutional Neural Networks
Authors: JT Thirukrishna , Krishna Sanda Reddy Sai , Shashank Policherla , S Srikanth , V Raghu
Published: March 2021

Corona Virus continues to possess its effects on the people lives across the world. The screening of infected persons is vital step because it is a fast and low-cost way. Chest X-ray images plays a major crucial role and it is used for examination in detection of CORONA VIRUS(COVID-19). Here radiological chest X-rays are easily available with low cost only. In this survey paper, we are using a Convolutional Neural Network(CNN) based solution that will benefit in detection of the Covid-19 Positive patients using radiography chest X-Ray images. To test the efficiency of the solution, we are using public available X-Ray images of Corona Virus Positive cases and negative cases. Images of Positive Corona Virus patients and pictures of healthy person images are divided into testing images and trainable images. The solution which we are providing will give good results in classification accuracy within the test set-up. Here we are going to develop a GUI application for medical Examination areas. This GUI application can be used on any computer and performed by any medical examiner or technician to determine Corona Virus positive patients using radiography X-ray images. The result will be shown or provided by this application is really fast and done within a few seconds.
Deep Reinforcement Learning for Building Honeypots against Runtime DOS Attack
Authors: Veluchamy Selvakumar , Kathavarayan RubaSoundar
Published: March 2021

Honeypot is a network environment used to protect the legitimate network resources from attacks. Honeypot creates an environment that impresses attackers to inject their activities to steal resources. This is a way to detect the attacks by doing attack detection procedures. In this work, Denial of Service (DoS) attacks are effectively detected by proposed honeypot system. Machine Learning (ML) and Deep Learning (DL) methods evolve in many areas to build intelligent decision making systems. This work uses DL approaches and secures event validation procedures for finding predicting DoS attacks. The proposed system called Deep Adaptive Reinforcement Learning for Honeypots (DARLH) is implemented to monitor internal and external DoS attacks. In the honeypot environment, the proposed DARLH system implements DARL based IDS (Intrusion Detection System) agents and Deep Recurrent Neural Network (DRNN) based IDS agents for monitoring multiple runtime DoS attacks. These techniques support for dynamic IDS against DoS attack. In addition, the DARLH creates protected poison distribution and server side supervision system for keeping the monitoring events legitimate. This work is implemented and performance is evaluated. The results are compared with existing systems like GNBH, BCH and RNSG. In this comparison, the proposed system provides 5–10% better results than other systems.
A positively charged surface patch on the pestivirus NS3 protease module plays an important role in modulating NS3 helicase activity and virus production
Authors: Zheng Fengwei , Yi Weicheng , Liu Weichi , Zhu Hongchang , Gong Peng , pan zishu
Published: March 2021

Pestivirus nonstructural protein 3 (NS3) is a multifunctional protein with protease and helicase activities that are essential for the virus replication. In this study, we used a combination of biochemical and genetic approaches to investigate the relationship between the positively charged patch on protease module and NS3 function. The surface patch was composed of four basic residues R50, K74 and K94 in NS3 protease domain and H24 in the structurally integrated cofactor NS4A PCS . Single residue or simultaneous four-residue substitution in the patch to alanine or aspartic acid hardly affect ATPase activity. However, the single R50, K94 or H24 residue or simultaneous four-residue substitution resulted in the apparent changes of the helicase activity and RNA-binding ability of NS3. When these mutations were introduced into a classical swine fever virus (CSFV) cDNA clone, the single K94 residue or simultaneous four-residue substitution (Qua_A or Qua_D) impaired the infectious virus production. Furthermore, the replication efficiency of the CSFV variants was partially correlated to the helicase activity of NS3 in vitro . Our results suggest that the conserved positively charged patch on the NS3 plays an important role in modulating the NS3 helicase activity in vitro and CSFV production.
COVID-19 lockdown has altered the dynamics among affective symptoms and social isolation among older adults: results from a longitudinal network analysis
Authors: Yu Junhong , Mahendran Rathi
Published: March 2021

The COVID-19 lockdown has drastically limited social interactions and brought about a climate of fear and uncertainty. These circumstances not only increase affective symptoms and social isolation among community dwelling older adults but also alter the dynamics among them. Using network analyses, we study the changes in these dynamics before and during the lockdown. Community-dwelling older adults (N = 419) completed questionnaires assessing depression, anxiety, and social isolation, before the COVID-19 pandemic, as part of a cohort study, and during the lockdown period. The total scores of these questionnaires were compared across time. For the network analyses, partial correlation networks were constructed using items in the questionnaires as nodes, separately at both timepoints. Changes in edges, as well as nodal and bridge centrality were examined across time. Depression and anxiety symptoms, and social isolation had significantly increased during the lockdown. Significant changes were observed across time on several edges. Greater connectivity between the affective and social isolation nodes at lockdown was observed. Depression symptoms have become more tightly coupled across individuals, and so were the anxiety symptoms. Depression symptoms have also become slightly decoupled from those of anxiety. These changing network dynamics reflect the greater influence of social isolation on affective symptoms across individuals and an increased vulnerability to affective disorders. These findings provide novel perspectives and translational implications on the changing mental health context amidst a COVID-19 pandemic situation.
A comparison of three different surgery approaches and methods for neurologically intact thoracolumbar fractures: A retrospective study
Authors: Zhu Chao , wang bin , yin jian , Liu Xinhui
Published: March 2021

Objectives

The purpose of this study was to evaluate and compare the feasibility, safety, and efficacy of conventional open pedicle screw fixation (COPSF), percutaneous pedicle screw fixation (PPSF), and paraspinal posterior open approach pedicle screw fixation (POPSF) for treating neurologically intact thoracolumbar fractures.
Methods

We retrospectively reviewed 108 patients who were posteriorly stabilized without graft fusion. Among them, 36 patients underwent COPSF, 38 patients underwent PPSF, and 34 patients underwent POPSF. The clinical outcomes, relative operation indexes, radiological findings were assessed and compared among the 3 groups.
Results

All of the patients were followed up for a mean time of 20 months. The PPSF group and POPSF group had shorter operation times, lower amounts of intraoperative blood loss, and shorter postoperative hospital stays than the COPSF group (P < 0.05). The radiation times and hospitalization costs were highest in the PPSF group (P < 0.05).Every group exhibited significant improvements in the Cobb angle (CA) and the vertebral body angle (VBA) correction (all P < 0.05). The COPSF group and the POPSF group had better improvements than the PPSF group at 3 days postoperatio and the POPSF group had the best improvements in the last follow up (P < 0.05).
Conclusion

Both PPSF and POPSF achieved similar effects as COPSF while also resulting in lower incidences of injury. PPSF is more advantageous in the early rehabilitation time period, compared with COPSF, but POPSF is a better option when considering the long-term effects, the costs of treatment and the radiation times.
Engagement with a Diverse Stakeholder Advisory Council for Research in Dementia Care
Authors: Masoud Sara Suzanne , Glassner Ashlie A. , Patel Neela , Mendoza Mayra , James Deborah , Rivette Sheran , White Carole L.
Published: March 2021

Background The inclusion of stakeholders throughout the research process has been gaining recognition as an approach that can improve the quality and impact of research. Stakeholder engagement for dementia care research has been identified as a national priority, though evaluation of engagement strategies and their impact has been limited. In dementia care research, stakeholders can include individuals living with dementia, family care partners, and health and social care professionals in dementia care. A Stakeholder Advisory Council (SAC) was established to identify priorities for dementia care research that are most important to stakeholders. Strategies to build capacity for research and facilitate engagement among the SAC were used to identify the research priorities. This study describes the experiences of SAC members engaged in the research process. Methods To evaluate stakeholder engagement, semi-structured interviews were conducted with members of the SAC to understand their experiences and perspectives on the strategies used to facilitate engagement and build capacity for research. Interviews were recorded, transcribed, and thematically analyzed using a mixed inductive and deductive approach. Findings were presented to members of the SAC to determine whether they felt their perspectives and experiences were accurately represented. Final domains and themes presented here were approved by the SAC. Results Interviews (N=11) were conducted with members of the SAC representing each stakeholder group; persons living with dementia (n=2); family care partners (n=4), and health and social care professionals in dementia care (n=5). Ten themes were categorized into four overarching domains: accessibility, council infrastructure, values and environment, and benefits of involvement. Conclusions Findings from this qualitative study are a resource for researchers seeking to collaborate with diverse stakeholder groups to represent their perspectives in research, including individuals living with dementia. The domains and themes identified here support the inclusion of diverse stakeholders in the research process, centering engagement and capacity building strategies around individuals living with dementia.
Repurposing tebipenem pivoxil as alternative therapy for severe gastrointestinal infections caused by extensively-drug resistant (XDR) Shigella spp.
Authors: Alvaro Elena Fernández , Cozar Cristina de , Urones Beatriz , Cortés Alvaro , Price Alan , Hoang Nhu Tran Do , Tuyen Ha Thanh , McCloskey Molly , Shaheen Shareef , Dayao Denise , Mercado Jaime de , García-Perez Adolfo , Singa Benson , Pavlinac Patricia , Walson Judd , Martínez-Martínez Maria Santos , Arnold Samuel , Tzipori Saul , Ballel Lluis , Baker Stephen
Published: March 2021

Diarrhoea remains one of the leading causes of childhood mortality globally. Recent epidemiological studies conducted in low-middle income countries (LMICs) identified Shigella spp. as the first and second most predominant agent of dysentery and moderate diarrhoea, respectively. Antimicrobial therapy is often necessary for Shigella infections; however, we are reaching a crisis point with efficacious antimicrobials. The rapid emergence of resistance against existing antimicrobials in Shigella spp. poses a serious global health problem. Here, aiming to identify alternative antimicrobial chemicals with activity against multi-drug resistant (MDR) Shigella, we initiated a collaborative academia-industry drug discovery project, applying high throughput phenotypic screening across broad chemical diversity. We identified several suitable compounds with antibacterial activity against Shigella. These compounds included the oral carbapenem tebipenem, which was found to be highly potent against broadly susceptible Shigella and contemporary MDR variants. Additional in vitro screening demonstrated that tebipenem had activity against a wide range of other non-Shigella enteric bacteria. Cognisant of the risk for the development of resistance against monotherapy, we identified synergistic behaviour of two different drug combinations incorporating tebipenem. The orally bioavailable prodrug (tebipenem pivoxil) effectively cleared the gut of infecting organisms when administered in physiological doses to Shigella-infected mice and gnotobiotic piglets. Our data highlight the utility of broad compound screening for tackling the emerging antimicrobial resistance crisis and shows that tebipenem pivoxil (licenced for paediatric respiratory tract infections in Japan) could be repurposed as an effective treatment for severe diarrhoea caused by MDR Shigella and other enteric pathogens in LMICs.
Interfacial Electronic Structure Engineering on Molybdenum Sulfide for Robust Dual-pH Hydrogen Evolution
Authors: Liu Mingqiang , Wang Jia-ao , Wang Gui-Gen , Li Fei , Cai Ya-Wei , Zhang Fuchun , Yu Jie , Yang Ya
Published: March 2021

Molybdenum disulfide, as an electronic highly-adjustable catalysts material, tuning its electronic structure is crucial to enhance its intrinsic hydrogen evolution reaction (HER) activity. Nevertheless, there are yet huge challenges to the understanding and regulation of the surface electronic structure of molybdenum disulfide-based catalysts. Here we address these challenges by tuning its electronic structure of phase modulation synergistic with interfacial chemistry and defects from phosphorus or sulfur implantation, and we then successfully design and synthesize electrocatalysts with the multi-heterojunction interfaces (e.g., 1T0.81-MoS2@Ni2P), demonstrating superior HER activities and good stabilities with a small overpotentials of 38.9 and 98.5 mV at 10 mA/cm2, a low Tafel slopes of 41 and 42 mV/dec in acidic as well as alkaline surroundings, outperforming commercial Pt/C catalyst and other reported Mo-based catalysts. Theoretical calculation verified that the incorporation of metallic-phase and intrinsic HER-active Ni-based materials into molybdenum disulfide could effectively regulate its electronic structure for making the bandgap narrower. Additionally, reduced nickel possesses empty orbitals, which is helpful for additional H binding ability. All these factors can decrease Mo-H bond strength, greatly improving the HER catalytic activity of these materials.
Direct limits for scalar field dark matter from a gravitational-wave detector
Authors: Grote Hartmut , Vermeulen Sander , Relton Philip , Raymond Vivien , Affeldt Christoph , Bergamin Fabio , Bisht Aparna , Brinkmann Marc , Danzmann Karsten , Doravari Suresh , Kringel Volker , Lough James , Lueck Harald , Mehmet Moritz , Mukund Nikhil , Nadji Severin , Schreiber Emil , Sorazu Borja , Strain Kenneth , Vahlbruch Henning , Weinert Michael , Willke Benno
Published: March 2021

The nature of dark matter remains unknown to date and several candidate particles are being considered in a dynamically changing research landscape [1]. Scalar field dark matter is a prominent option that is being explored with precision instruments such as atomic clocks and optical cavities [2-8].
Here we report on the first direct search for scalar field dark matter utilising a gravitational-wave detector operating beyond the quantum shot-noise limit.
We set new upper limits for the coupling constants of scalar field dark matter as a function of its mass by excluding the presence of signals that would be produced through the direct coupling of this dark matter to the beamsplitter of the GEO600 interferometer. The new constraints improve upon bounds from previous direct searches by more than six orders of magnitude and are more stringent than limits obtained in tests of the equivalence principle by one order of magnitude.
Our work demonstrates that scalar field dark matter can be probed or constrained with direct searches using gravitational-wave detectors and highlights the potential of quantum-enhanced interferometry for dark matter detection.
Triple-Band Dual-Polarized Dipole Antenna for 5G Sub-6 GHz Communications
Authors: Yang Lixia , Tahseen Hafiz Usman , Hussain Syed Shah Irfan , Hongjin Wang
Published: March 2021

A triple-band ±45° dual-polarized dipole antenna is presented in this paper. The proposed antenna covers two bands from n77 and one from n79 5G NR frequency spectrums. The profile antenna exhibits the measured impedance bandwidths 3.6-3.85 GHz, 4.05-4.2 GHz and 4.8- 5.15 GHz with S11, S22 < -
15dB return loss. Antenna is fabricated with four substrates; one radiator, one reflector and two feeding baluns. Antenna is designed and optimized with HFSS simulator and fabricated for experimental verification. Antenna gives a stable radiation pattern with 8.55dBi high gain and 70° half power beam width (HPBW) that makes it a good candidate for wireless 5G sub-6 GHz and multiband base station applications. Finally, antenna is tested in a realistic application environment to show the utility of the proposed antenna for wireless sub-6 GHz IoT applications.