37 research outputs found

    The Intersection of Privacy and Security

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    There is a common misconception that privacy and security are the same thing. The reality is that while there is an intersection of these two topics, there are differences between security and privacy. This paper sets up through illustrations some similarities and differences between these topics

    Data Mining and Privacy: An Initial Attempt at a Comprehensive Code of Conduct for Online Business

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    The prevalence of data mining by businesses and government organizations raises concerns among many individuals about the privacy of their personal data. We address this issue by offering a different perspective that reconciles the conflicting desires of businesses and consumers. We describe privacy, data mining, and their interaction in the larger context, identify the costs and benefits of the uses of data mining, and discuss potential stakeholders found at the intersection of the two subjects. To help synthesize our proposed code of ethical conduct, we examine existing codes of conduct and how they relate to the issue of privacy in the context of data mining with people, processes, and technology. Showing that a uniform code of ethical conduct for online privacy is feasible from both a managerial and ethical perspective, we provide an initial philosophical and principle synthesis that businesses and organizations can tailor for their own specific customers and needs. The developed code of ethical conduct respects consumers’ desire for privacy while allowing businesses to use data mining techniques to elicit information that benefits both the business and the consumer

    SIRT1 Regulates HIV Transcription via Tat Deacetylation

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    The human immunodeficiency virus (HIV) Tat protein is acetylated by the transcriptional coactivator p300, a necessary step in Tat-mediated transactivation. We report here that Tat is deacetylated by human sirtuin 1 (SIRT1), a nicotinamide adenine dinucleotide-dependent class III protein deacetylase in vitro and in vivo. Tat and SIRT1 coimmunoprecipitate and synergistically activate the HIV promoter. Conversely, knockdown of SIRT1 via small interfering RNAs or treatment with a novel small molecule inhibitor of the SIRT1 deacetylase activity inhibit Tat-mediated transactivation of the HIV long terminal repeat. Tat transactivation is defective in SIRT1-null mouse embryonic fibroblasts and can be rescued by expression of SIRT1. These results support a model in which cycles of Tat acetylation and deacetylation regulate HIV transcription. SIRT1 recycles Tat to its unacetylated form and acts as a transcriptional coactivator during Tat transactivation

    Tracking seasonal changes in North Sea zooplankton trophic dynamics using stable isotopes

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    Trophodynamics of meso-zooplankton in the North Sea (NS) were assessed at a site in the southern NS, and at a shallow and a deep site in the central NS. Offshore and neritic species from different ecological niches, including Calanus spp., Temora spp. and Sagitta spp., were collected during seven cruises over 14 months from 2007 to 2008. Bulk stable isotope (SI) analysis, phospholipid-derived fatty acid (PLFA) compositions, and ή 13CPLFA data of meso-zooplankton and particulate organic matter (POM) were used to describe changes in zooplankton relative trophic positions (RTPs) and trophodynamics. The aim of the study was to test the hypothesis that the RTPs of zooplankton in the North Sea vary spatially and seasonally, in response to hydrographic variability, with the microbial food web playing an important role at times. Zooplankton RTPs tended to be higher during winter and lower during the phytoplankton bloom in spring. RTPs were highest for predators such as Sagitta sp. and Calanus helgolandicus and lowest for small copepods such as Pseudocalanus elongatus and zoea larvae (Brachyura). ή 15NPOM-based RTPs were only moderate surrogates for animals’ ecological niches, because of the plasticity in source materials from the herbivorous and the microbial loop food web. Common (16:0) and essential (eicosapentaenoic acid, EPA and docosahexaenoic acid, DHA) structural lipids showed relatively constant abundances. This could be explained by incorporation of PLFAs with ή 13C signatures which followed seasonal changes in bulk ή 13CPOM and PLFA ή 13CPOM signatures. This study highlighted the complementarity of three biogeochemical approaches for trophodynamic studies and substantiated conceptual views of size-based food web analysis, in which small individuals of large species may be functionally equivalent to large individuals of small species. Seasonal and spatial variability was also important in altering the relative importance of the herbivorous and microbial food webs

    Measurement of the cross-section for Z → e<sup>+</sup>e<sup>-</sup> production in pp collisions at &#8730;<span style="text-decoration:overline">s</span>=7 TeV

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    A measurement of the cross-section for pp → Z → e+e− is presented using data at s√=7 TeV corresponding to an integrated luminosity of 0.94 fb−1. The process is measured within the kinematic acceptance p T &#62; 20 GeV/c and 2 &#60; η &#60; 4.5 for the daughter electrons and dielectron invariant mass in the range 60–120 GeV/c 2. The cross-section is determined to be σ(pp→Z→e+e−)=76.0±0.8±2.0±2.6pb where the first uncertainty is statistical, the second is systematic and the third is the uncertainty in the luminosity. The measurement is performed as a function of Z rapidity and as a function of an angular variable which is closely related to the Z transverse momentum. The results are compared with previous LHCb measurements and with theoretical predictions from QCD

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

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    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Eurosibs: towards robust measurement of infant neurocognitive predictors of Autism across Europe

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    Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that affects social communication skills and flexible behaviour. Developing new treatment approaches for ASD requires early identification of the factors that influence later behavioural outcomes. One fruitful research paradigm has been the prospective study of infants with a first degree relative with ASD, who have around a 20% likelihood of developing ASD themselves. Early findings have identified a range of candidate neurocognitive markers for later ASD such as delayed attention shifting or neural responses to faces, but given the early stage of the field most sample sizes are small and replication attempts remain rare. The Eurosibs consortium is a European multisite neurocognitive study of infants with an older sibling with ASD conducted across nine sites in five European countries. In this manuscript, we describe the selection and standardization of our common neurocognitive testing protocol. We report data quality assessments across sites, showing that neurocognitive measures hold great promise for cross-site consistency in diverse populations. We discuss our approach to ensuring robust data analysis pipelines and boosting future reproducibility. Finally, we summarise challenges and opportunities for future multi-site research efforts

    A Composite Strategy for the Legal and Ethical Use of Data Mining

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    An increasingly popular business practice, data mining provides for the extractionof information from existing data to identify trends such as consumerpurchasing practices and can foster greater efficiency in companies’ marketingefforts. There are corresponding costs associated with data mining, aswell. The most difficult issue surrounding data mining is that of individualprivacy rights and the costs associated with the potential alteration of ‘traditional’privacy rights. This paper seeks to review basic definitional informationon data mining and provide a strategy for companies’ successful, meaningfuland ethical use of data mining as presented for meaningful knowledgegeneration

    Dispelling 10 common disaster recovery myths

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