269 research outputs found

    DATA & INFRASTRUCTURE SECURITY: THE RISK OF AI ENABLED CYBER ATTACKS AND QUANTUM HACKING

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    On November 21, 2022, Dr. Ryan Prox, Adjunct Professor in the School of Criminology at Simon Fraser University, presented Data & Infrastructure Security: The Risk of AI Enabled Cyber Attacks and Quantum Hacking.  A question-and-answer period with the audience and CASIS Vancouver executives followed the presentation. The key topics discussed were the evolution of data and infrastructure security, the increasing interconnectedness of critical infrastructure, and the need to increase resilience in the face of revolutionary technological advancements.     Received: 2023-01-23Revised: 2023-01-2

    Algorithmic Technology: Fueling AI in an Ethical & Transparent Way

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    On October 20, 2022, Dr. Ryan Prox, S/Constable-in-Charge of the Crime Analytics Advisory & Developmental Unit at the Vancouver Police Department and Adjunct Professor at Simon Fraser University, presented on Algorithmic Technology: Fueling AI in an Ethical & Transparent Way at the October Digital Roundtable event hosted by the Canadian Association for Security and Intelligence Studies (CASIS)-Vancouver. The key points discussed were algorithmic technology and its implementation within police services; governance, accountability, and public perceptions of AI; and mitigating risk when implementing AI. The presentation was followed by a question-and-answer period with questions from the audience and CASIS-Vancouver executives

    Funktions- und Regulationsanalyse der zinkabhängigen Metalloprotease ADAM10, der bei der Alzheimer Demenz beteiligten α-Sekretase

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    In vitro und in vivo Charakterisierung der zinkabhängigen Metalloprotease ADAM10. Charakterisierung der Proteasefunktion während der Entwicklung des murinen ZNS und der Funktion im sdulten, murinen ZNS. Charakterisierung eines neuen Interaktionspartners von ADAM10

    Der Qualifikationsbedarf für Nachhaltigkeitsmanagement wächst

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    Nachhaltigkeitsmanagement stellt einen zunehmend an Bedeutung gewinnenden Erfolgsfaktor für Unternehmen dar. Der MBA Sustainability Management der Universität Lüneburg ist ein erfolgreiches Beispiel für ein Qualifizierungsangebot für heutige und zukünftige Nachhaltigkeitsmanager

    Bilateral posterior RION after concomitant radiochemotherapy with temozolomide in a patient with glioblastoma multiforme: a case report

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    <p>Abstract</p> <p>Background</p> <p>Radiation induced optic neuropathy (RION) is a rare but severe consequence of radiation therapy that is associated with adjuvant chemotherapy, specifically therapy with vincristine or nitrosoureas. However, there is very little evidence regarding the occurrence of RION after concomitant radiochemotherapy with temozolomide.</p> <p>Case Presentation</p> <p>The case of a 63 year old woman with glioblastoma multiforme and concomitant radiochemotherapy with temozolomide is described. Due to a slight depressive episode the patient also took hypericum perforatum. Five months after cessation of fractionated radiation and adjuvant chemotherapy with temozolomide (cumulative dose of 11040 mg) the patient developed bilateral amaurosis due to RION. Tumor regrowth was excluded by magnetic resonance imaging. After the application of gadolinium a pathognomonic contrast enhancement of both prechiasmatic optic nerves could be observed.</p> <p>Conclusions</p> <p>In this patient, the occurrence of RION may have been the result of radiosensitization by temozolomide, which could have been strengthened by hypericin. Consequently, physicians should avoid a concomitant application of hypericum perforatum and radiochemotherapy.</p

    Is synesthesia more common in patients with Asperger syndrome?

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    There is increasing evidence from case reports that synesthesia is more common in individuals with autism spectrum conditions (ASC). Further, genes related to synesthesia have also been found to be linked to ASC and, similar to synaesthetes, individuals with ASC show altered brain connectivity and unusual brain activation during sensory processing. However, up to now a systematic investigation of whether synesthesia is more common in ASC patients is missing. The aim of the current pilot study was to test this hypothesis by investigating a group of patients diagnosed with Asperger Syndrome (AS) using questionnaires and standard consistency tests in order to classify them as grapheme-color synaesthetes. The results indicate that there are indeed many more grapheme-color synaesthetes among AS patients. This finding is discussed in relation to different theories regarding the development of synesthesia as well as altered sensory processing in autism

    Word Recognition Memory in Adults with Attention-Deficit/Hyperactivity Disorder as Reflected by Event-Related Potentials

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    Objective: Attention-deficit/hyperactivity disorder (ADHD) is increasingly diagnosed in adults. In this study we address the question whether there are impairments in recognition memory. Methods: In the present study 13 adults diagnosed with ADHD according to DSM-IV and 13 healthy controls were examined with respect to event-related potentials (ERPs) in a visual continuous word recognition paradigm to gain information about recognition memory effects in these patients. Results: The amplitude of one attention-related ERP component, the N1, was significantly increased for the ADHD adults compared with the healthy controls in the occipital electrodes. The ERPs for the second presentation were significantly more positive than the ERPs for the first presentation. This effect did not significantly differ between groups. Conclusion: Neuronal activity related to an early attentional mechanism appears to be enhanced in ADHD patients. Concerning the early or the late part of the old/new effect ADHD patients show no difference which suggests that there are no differences with respect to recollection and familiarity-based recognition processes

    Tetraspanin 3: A central endocytic membrane component regulating the expression of ADAM10, presenilin and the amyloid precursor protein

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    Despite existing knowledge about the role of the A Disintegrin and Metalloproteinase 10 (ADAM10) as the α-secretase involved in the non-amyloidogenic processing of the amyloid precursor protein (APP) and Notch signalling we have only limited information about its regulation. In this study, we have identified ADAM10 interactors using a split ubiquitin yeast two hybrid approach. Tetraspanin 3 (Tspan3), which is highly expressed in the murine brain and elevated in brains of Alzheimer's disease (AD) patients, was identified and confirmed to bind ADAM10 by co-immunoprecipitation experiments in mammalian cells in complex with APP and the γ-secretase protease presenilin. Tspan3 expression increased the cell surface levels of its interacting partners and was mainly localized in early and late endosomes. In contrast to the previously described ADAM10-binding tetraspanins, Tspan3 did not affect the endoplasmic reticulum to plasma membrane transport of ADAM10. Heterologous Tspan3 expression significantly increased the appearance of carboxy-terminal cleavage products of ADAM10 and APP, whereas N-cadherin ectodomain shedding appeared unaffected. Inhibiting the endocytosis of Tspan3 by mutating a critical cytoplasmic tyrosine-based internalization motif led to increased surface expression of APP and ADAM10. After its downregulation in neuroblastoma cells and in brains of Tspan3-deficient mice, ADAM10 and APP levels appeared unaltered possibly due to a compensatory increase in the expression of Tspans 5 and 7, respectively. In conclusion, our data suggest that Tspan3 acts in concert with other tetraspanins as a stabilizing factor of active ADAM10, APP and the γ-secretase complex at the plasma membrane and within the endocytic pathway

    Neuronal correlates of ADHD in adults with evidence for compensation strategies – a functional MRI study with a Go/No-Go paradigm

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    Objective: Response inhibition impairment is one of the most characteristic symptoms of attention-deficit/hyperactivity disorder (ADHD). Thus functional magnetic resonance imaging (fMRI) during a Go/No-Go task seems to be an ideal tool for examining neuronal correlates of inhibitory control deficits in ADHD. Prior studies have shown frontostriatal abnormalities in children and adolescents. The aim of our study was to investigate whether adults with ADHD would still show abnormal brain activation in prefrontal brain regions during motor response inhibition tasks

    BEYOND CHILDHOOD: PSYCHIATRIC COMORBIDITIES AND SOCIAL BACKGROUND OF ADULTS WITH ASPERGER SYNDROME

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    Background: Over the past few years, our knowledge about Asperger syndrome (AS) has increased enormously. Although it used to be a syndrome mainly encountered in childhood and adolescent psychiatry, it is now increasingly recognized in adult psychiatry. Nevertheless, little is known about psychiatric comorbidities and life course of adults with AS. The current study aimed to gain an insight into comorbidities and the development of the social situation of adults with AS. Subjects and methods: We investigated psychiatric comorbidities, psychiatric history, professional background, partnerships, and children in 50 adults with AS (34 men and 16 women) over a broad age range (20–62 years). Results: Seventy percent of adults with AS had at least one psychiatric comorbiditiy. Most frequent comorbidities were depression and anxiety disorders. Obsessive–compulsive disorder and alcohol abuse/dependence were also observed. Many adults had previously been treated with psychopharmacological or psychotherapeutic interventions. Although most adults had a high-level school leaving certificate and had gone on to complete training/university studies, less than half were currently in employment. Fourteen adults were living in a partnership and 10 had children. Conclusions: Adults with AS often have psychiatric comorbidities, indicating lower levels of mental health. Additionally, they seem to have severe limitations concerning professional success, despite having a good school education. Their family situation is also impaired with regard to starting a family. These considerable limitations in the life of adults with AS may help to understand their specific problems, and emphasize the importance of developing specific treatments for improving their mental health and social integration
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