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Adamu Abdullahi Garba ◽  
Maheyzah Muhamad Siraj ◽  
Siti Hajar Othman

<p>The world economy today has adopted the internet as a medium of transactions, this has made many organizations use the internet for their daily activities. With this, there is an urgent need to have knowledge in cybersecurity and also how to defend critical assets. The objective of this paper is to identify the level of cybersecurity awareness of students in Northeastern Nigeria. A quantitative approach was used for data collection and cyberbully, personal information, internet banking, internet addiction, and Self-protection were the items ask for cybersecurity awareness level identification. Descriptive analysis was performed for initial result findings using SPSS and OriginPro for graphical design. the preliminary result shows of the students have some basic knowledge of cybersecurity in an item like internet banking, while other items like cyberbully, self-protection and, internet addiction result show moderate awareness, the students' participation based on gender, males constitute 77.1% i.e. (N=340) and females constitute 22.9% i.e. (N=101). Future research would concentrate on designing awareness programs that would increase the level of their awareness especially the students in the Northeastern part of Nigeria.</p>

2022 ◽  
Vol 9 ◽  
Feng Liu ◽  
Mingjie Fang ◽  
Lanhui Cai ◽  
Miao Su ◽  
Xueqin Wang

This study aims to understand the influence of COVID-19 on consumers' fears and self-protection motivations. Furthermore, the study seeks to understand the effects of these fears and motivations on consumers' intentions to use omnichannel retailing. A modified theoretical model is proposed by integrating protection motivation theory (PMT) and extending the extended parallel process model (E-EPPM). A total of 398 valid questionnaires are collected and used for further structural equation modeling analysis. The results suggest that the perceived severity, perceived vulnerability, and health anxiety positively impact perceived fears surrounding COVID-19. Furthermore, it is found that perceived fear, self-efficacy, and response efficacy will affect the protection motivation of consumers and ultimately contribute to their behavioral intention to use omnichannel retailing. The findings theoretically enrich the research on COVID-19, PMT, and E-EPPM and empirically provide managerial implications for omnichannel retail service providers.

2022 ◽  
Vol 9 ◽  
Wen Zhou ◽  
Leshui He ◽  
Xuanhua Nie ◽  
Taoketaohu Wuri ◽  
Jinhai Piao ◽  

Coronavirus disease 2019 (COVID-19) spread throughout China in January 2020. To contain the virus outbreak, the Chinese government took extraordinary measures in terms of public policy, wherein accurate and timely dissemination of information plays a crucial role. Despite all of the efforts toward studying this health emergency, little is known about the effectiveness of public policies that support health communication during such a crisis to disseminate knowledge for self-protection. Particularly, we focus on the accuracy and timeliness of knowledge dissemination on COVID-19 among people in remote regions—a topic largely omitted in existing research. In February 2020, at the early-stages of the COVID-19 outbreak, a questionnaire survey was carried out. In total, 8,520 participants from seven less economically developed provinces situated in the borderlands of China with large ethnic minority groups responded. We analyzed the data through poisson regression and logistic regression analyses. We found that (1) people in remote regions of China obtained accurate information on COVID-19. Further, they were able to take appropriate measures to protect themselves. (2) Result from both descriptive analysis and multivariable regression analysis revealed that there is no large difference in the accuracy of information among groups. (3) Older, less educated, and rural respondents received information with a significant delay, whereas highly educated, younger, urban residents and those who obtained information through online media were more likely to have received the news of the outbreak sooner and to be up to date on the information. This research provides evidence that disadvantage people in remote regions obtained accurate and essential information required to act in an appropriate manner in responses to the COVID-19 outbreak. However, they obtained knowledge on COVID-19 at a slower pace than other people; thus, further improvement in the timely dissemination of information among disadvantage people in remote regions is warranted.

Thibault Lécrevisse ◽  
Xavier Chaud ◽  
Philippe Fazilleau ◽  
Clément Genot ◽  
Jung-bin Song

Abstract In this article, we summarize what we have learned about Metal-as-Insulation (MI) winding behavior and technical challenges. Bailey et al. first proposed the use of Metallic Insulation (MI) for superconducting magnet in 1988 through a U.S. patent. High Temperature Superconductor (HTS) materials are highly thermally stable. This feature compared to classical Low Temperature Superconductor (LTS) enables the use of MI technology to improve the protection against quenches. Gupta was the first to propose the use of a metallic tape in an HTS winding to avoid too much radial currents in No Insulation (NI) in 2011. Hahn et al. presented preliminary results on a pancake sample the same year. We are proposing here to come back on the work done for about 10 years by research groups worldwide and will focus on the turn-to-turn contact resistivity Rct parameter. We will also give details of our LNCMI-CEA-Néel Institute MI HTS insert built in 2018 in the framework of the French National Research Agency (ANR) funding through the NOUGAT project. We tested this magnet many times between 2018 and 2021 and learnt a lot on this technology. This magnet is the first REBCO solenoid of this size using this technology and tested intensively at such high magnetic field (up to 32.5 T) so far. In this magnet, we firstly include a magnetic shielding technology consisting of REBCO NI turns inside the overbanding of each pancake. We give some details and effect of such technology inside an HTS MI insert in case of a fast discharge, a quench or an outsert failure. Finally, we discuss about the self-protection feature of MI coils and we propose a passive protection way for high Rct values.

2022 ◽  
Kai Zhang ◽  
Yao Xiao ◽  
Jin Sun ◽  
Ting Xu ◽  
Kun Zhou ◽  

Abstract Background Symbiosis with chemosynthetic bacteria has allowed many invertebrates to flourish in ‘extreme’ deep-sea chemosynthesis-based ecosystems, such as hydrothermal vents and cold seeps. Bathymodioline mussels are considered as models of deep-sea animal-bacteria symbiosis, but the diversity of molecular mechanisms governing host-symbiont interactions remains understudied owing to the lack of hologenomes. In this study, we adopted a total hologenome approach in sequencing the hydrothermal vent mussel Bathymodiolus marisindicus and the endosymbiont genomes combined with a transcriptomic and proteomic approach that explore the mechanisms of symbiosis. Results Here, we provide the first coupled mussel-endosymbiont genome assembly. Comparative genome analysis revealed that both Bathymodiolus marisindicus and its endosymbiont reshape their genomes through the expansion of gene families, likely due to chemosymbiotic adaptation. Functional differentiation of host immune-related genes and attributes of symbiont self-protection that likely facilitate the establishment of endosymbiosis. Hologenomic analyses offer new evidence that metabolic complementarity between the host and endosymbionts enables the host to compensate for its inability to synthesize some essential nutrients, and two pathways (digestion of symbionts and molecular leakage of symbionts) that can supply the host with symbiontderived nutrients. Results also showed that bacteriocin and abundant toxins of symbiont may contribute to the defense of the B. marisindicus holobiont. Moreover, an exceptionally large number of anti-virus systems were identified in the B. marisindicus symbiont, which likely work synergistically to efficiently protect their hosts from phage infection, indicating virus-bacteria interactions in intracellular environments of a deepsea vent mussel. Conclusions Our study provides novel insights into the mechanisms of symbiosis enabling deep-sea mussels to successfully colonize the special hydrothermal vent habitats.

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 454
German Sternharz ◽  
Jonas Skackauskas ◽  
Ayman Elhalwagy ◽  
Anthony J. Grichnik ◽  
Tatiana Kalganova ◽  

This paper introduces a procedure to compare the functional behaviour of individual units of electronic hardware of the same type. The primary use case for this method is to estimate the functional integrity of an unknown device unit based on the behaviour of a known and proven reference unit. This method is based on the so-called virtual sensor network (VSN) approach, where the output quantity of a physical sensor measurement is replicated by a virtual model output. In the present study, this approach is extended to model the functional behaviour of electronic hardware by a neural network (NN) with Long-Short-Term-Memory (LSTM) layers to encapsulate potential time-dependence of the signals. The proposed method is illustrated and validated on measurements from a remote-controlled drone, which is operated with two variants of controller hardware: a reference controller unit and a malfunctioning counterpart. It is demonstrated that the presented approach successfully identifies and describes the unexpected behaviour of the test device. In the presented case study, the model outputs a signal sample prediction in 0.14 ms and achieves a reconstruction accuracy of the validation data with a root mean square error (RMSE) below 0.04 relative to the data range. In addition, three self-protection features (multidimensional boundary-check, Mahalanobis distance, auxiliary autoencoder NN) are introduced to gauge the certainty of the VSN model output.

2022 ◽  
Vol 4 (2) ◽  
pp. 1016-1020
Iin Indawati ◽  
Aan Kunaedi ◽  
Anis Selawati ◽  
Elva Angela

The impact of the Covid-19 pandemic in Indonesia continues increasing significantly, even positive cases reached up to 235,173,857 people. The existence of Student Work Study (KKM) activities is expected to make a positive contribution during the Covid-19 pandemic that hit Indonesia. In connection with the condition of the spread of Covid-19 which is still increasing, KKM implementation activities in Kesugengan Kidul village, Depok Subdistrict, Cirebon Regency must certainly be creative in order to stay safe and the purpose of activities is achieved. Starting from student fielding and data collection of partnership problems by applying health protocols properly. The method of carrying out activities is carried out with various efforts, including by providing education through leaflets, brochures, sticking brochures on the walls of elementary schools, by limiting the implementation of learning activities, provide education and examples of vitamins both tablets and derived from fruit in the form of nutritious foods that the body needs during the Covid-19 pandemic, even educating through door to door method to local citizen. Expectation of understanding and insight of citizens in the place of KKM partnerships are increasing about the prevention of Covid-19. The results and benefits of KKM activities towards partnerships include increasing public awareness of the prevention of Covid-19, one of which understands the importance of using masks, especially 2-layer masks. The community is more cooperative towards the efforts and programs of village officials to prevent the increase in the spread of the Covid-19 virus, increased citizen insight in partnership on vitamins needed and useful to increase endurance to fight covid-19 and discipline to implement health protocols in an effort to prevent and suppress the spread of Covid-19 in the partnership area of Kesugengan Kidul Village, Depok Subdistrict, Cirebon Regency.

2022 ◽  
Vol 49 (1) ◽  
pp. 34-42
Benjawee Srithanissorn ◽  
Kritsana Yonphet ◽  
Daranee Chiewchantanakit ◽  
Witoo Dilokthornsakul ◽  
Piyameth Dilokthornsakul

Yu-Bin Dong ◽  
Luo-Gang Ding ◽  
Song Wang ◽  
Bingjian Yao ◽  
Wen-Xiu Wu ◽  

As an important personal protective equipment (PPE), facemasks play an important role in self-protection during disastrous COVID-19 and other respiratory viruses pandemic. On the other hand, massive utilization of disposable...

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