368 research outputs found

    Human capability evaluation approach for cybersecurity in critical industrial infrastructure

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    Every organization is as frail as its frailest human link in the cyber security of Industry Control System (ICS), which is without predisposition to conceivable technological solutions for enforcing security. Noticeably, human-involved systems are becoming more chaotic, and gravely under attacks due to irregular actions or inactions of human entities in the constituent chain. Many industrial cyber-attacks have successfully defeated technological security solutions through preying on human weaknesses in knowledge and skills, and manipulating insiders within organizations into unsuspectingly delivering entry and access to sensitive industrial assets. In order to help enterprises assess the level of employees’ cyber security awareness and responsiveness, and enhance ICS Cyber security knowledge and skills for ICS protection, a Workforce Cyber Security Capability evaluation model is presented, and theoretically validated. A capability evaluation will allow industries to have a better understanding of the potential state of consciousness, readiness and diagnostic abilities of the industries; thus improve the prevention, detection, and response to any cyber-specific incidents

    Stereotyping starlings are more 'pessimistic'.

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    Negative affect in humans and animals is known to cause individuals to interpret ambiguous stimuli pessimistically, a phenomenon termed 'cognitive bias'. Here, we used captive European starlings (Sturnus vulgaris) to test the hypothesis that a reduction in environmental conditions, from enriched to non-enriched cages, would engender negative affect, and hence 'pessimistic' biases. We also explored whether individual differences in stereotypic behaviour (repetitive somersaulting) predicted 'pessimism'. Eight birds were trained on a novel conditional discrimination task with differential rewards, in which background shade (light or dark) determined which of two covered dishes contained a food reward. The reward was small when the background was light, but large when the background was dark. We then presented background shades intermediate between those trained to assess the birds' bias to choose the dish associated with the smaller food reward (a 'pessimistic' judgement) when the discriminative stimulus was ambiguous. Contrary to predictions, changes in the level of cage enrichment had no effect on 'pessimism'. However, changes in the latency to choose and probability of expressing a choice suggested that birds learnt rapidly that trials with ambiguous stimuli were unreinforced. Individual differences in performance of stereotypies did predict 'pessimism'. Specifically, birds that somersaulted were more likely to choose the dish associated with the smaller food reward in the presence of the most ambiguous discriminative stimulus. We propose that somersaulting is part of a wider suite of behavioural traits indicative of a stress response to captive conditions that is symptomatic of a negative affective state

    Talking about Black Lives Matter and #MeToo

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    This essay explores the apparent differences and similarities between the Black Lives Matter and the #MeToo movements. In April 2019, the Wisconsin Journal of Gender, Law and Society hosted a symposium entitled “Race-Ing Justice, En-Gendering Power: Black Lives Matter and the Role of Intersectional Legal Analysis in the Twenty-First Century.” That program facilitated examination of the historical antecedents, cultural contexts, methods, and goals of these linked equality movements. Conversations continued among the symposium participants long after the end of the official program. In this essay, the symposium’s speakers memorialize their robust conversations and also dive more deeply into the phenomena, implications, and future of Black Lives Matter and #MeToo. This essay organizes around internal and external spatial metaphors and makes five schematic moves. First, internal considerations ground comparisons of the definitions, goals, and ideas of success employed by or applied to Black Lives Matter and #MeToo. Second, external concerns inspire questions about whether both movements may be better understood through the lens of intersectionality, and relatedly, what challenges these movements pose for an intersectional analysis. Third, a meta-internal framework invites inquiry into how the movements shape the daily work of scholars, teachers, lawyers, and community activists. Fourth, a dialectical external-internal frame drives questions about the movements’ effects on law and popular culture, and the reciprocal effects between those external influences and the movements themselves. Returning to an external, even forward-looking, approach, we ask what the next steps are for both movements. This five-part taxonomy frames the inquiry into where the Black Lives Matter and #MeToo movements are located individually, but also where they are co-located, and, perhaps most importantly, where they are going

    Haplotype structure and selection of the MDM2 oncogene in humans

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    The MDM2 protein is an ubiquitin ligase that plays a critical role in regulating the levels and activity of the p53 protein, which is a central tumor suppressor. A SNP in the human MDM2 gene (SNP309 T/G) occurs at frequencies dependent on demographic history and has been shown to have important differential effects on the activity of the MDM2 and p53 proteins and to associate with altered risk for the development of several cancers. In this report, the haplotype structure of the MDM2 gene is determined by using 14 different SNPs across the gene from three different population samples: Caucasians, African Americans, and the Ashkenazi Jewish ethnic group. The results presented in this report indicate that there is a substantially reduced variability of the deleterious SNP309 G allele haplotype in all three populations studied, whereas multiple common T allele haplotypes were found in all three populations. This observation, coupled with the relatively high frequency of the G allele haplotype in both and Caucasian and Ashkenazi Jewish population data sets, suggests that this haplotype could have undergone a recent positive selection sweep. An entropy-based selection test is presented that explicitly takes into account the correlations between different SNPs, and the analysis of MDM2 reveals a significant departure from the standard assumptions of selective neutrality

    Conceivable security risks and authentication techniques for smart devices

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    With the rapidly escalating use of smart devices and fraudulent transaction of users’ data from their devices, efficient and reliable techniques for authentication of the smart devices have become an obligatory issue. This paper reviews the security risks for mobile devices and studies several authentication techniques available for smart devices. The results from field studies enable a comparative evaluation of user-preferred authentication mechanisms and their opinions about reliability, biometric authentication and visual authentication techniques

    Disruption in A-to-I Editing Levels Affects C. elegans Development More Than a Complete Lack of Editing

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    A-to-I RNA editing, catalyzed by ADAR proteins, is widespread in eukaryotic transcriptomes. Studies showed that, in C. elegans, ADR-2 can actively deaminate dsRNA, whereas ADR-1 cannot. Therefore, we set out to study the effect of each of the ADAR genes on the RNA editing process. We performed comprehensive phenotypic, transcriptomics, proteomics, and RNA binding screens on worms mutated in a single ADAR gene. We found that ADR-1 mutants exhibit more-severe phenotypes than ADR-2, and some of them are a result of non-editing functions of ADR-1. We also show that ADR-1 significantly binds edited genes and regulates mRNA expression, whereas the effect on protein levels is minor. In addition, ADR-1 primarily promotes editing by ADR-2 at the L4 stage of development. Our results suggest that ADR-1 has a significant role in the RNA editing process and in altering editing levels that affect RNA expression; loss of ADR-1 results in severe phenotypes

    USH3A transcripts encode clarin-1, a four-transmembrane-domain protein with a possible role in sensory synapses

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    [EN] Usher syndrome type 3 (USH3) is an autosomal recessive disorder characterised by the association of post-lingual progressive hearing loss, progressive visual loss due to retinitis pigmentosa and variable presence of vestibular dysfunction. Because the previously defined transcripts do not account for all USH3 cases, we performed further analysis and revealed the presence of additional exons embedded in longer human and mouse USH3A transcripts and three novel USH3A mutations. Expression of Ush3a transcripts was localised by whole mount in situ hybridisation to cochlear hair cells and spiral ganglion cells. The full length USH3A transcript encodes clarin-1, a four-transmembrane-domain protein, which defines a novel vertebrate-specific family of three paralogues. Limited sequence homology to stargazin, a cerebellar synapse four-transmembrane-domain protein, suggests a role for clarin-1 in hair cell and photoreceptor cell synapses, as well as a common pathophysiological pathway for different Usher syndromes.We are grateful to all patients and their family members who participated in this study. We would also like to thank Ronna Hertzano for the preparation of the mouse inner ear cDNA. This work was funded by an Infrastructure grant of the Israeli Ministry of Science Culture and Sports, the Crown Human Genome Center at The Weizmann Institute of Science, the Alfried Krupp Foundation and by the Finnish Eye and Tissue Bank Foundation, the Finnish Eye Foundation, the Maud Kuistila Memorial Foundation, the Oskar Oflund Foundation, Finnish State grant TYH9235, the European Commission (QLG2-CT-1999-00988) (KB Araham) and by the Foundation Fighting Blindness. JS Beckman holds the, Hermann Mayer professorial chair and D Lancet holds the Ralf and Lois Silver professorial chair.Adato, A.; Vreugde, S.; Joensuu, T.; Avidan, N.; Hamalainen, R.; Belenkiy, O.; Olender, T.... (2002). USH3A transcripts encode clarin-1, a four-transmembrane-domain protein with a possible role in sensory synapses. European Journal of Human Genetics. 10(6):339-350. https://doi.org/10.1038/sj.ejhg.520083133935010
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