518 research outputs found
LIBRARY SELF SERVICE SYSTEM USING NFC AND 2FA GOOGLE AUTHENTICATOR
The implementation of a self-service system is already used by many libraries, mainly on self-loan books. Self-service generally only uses RFID as a medium for identifying members and borrowed books, but using RFID alone as the head of the identification process may lead to many crimes such as using someone else's member card to borrow books, scam, and so on. This study aims to propose a new business process for self loan books from the library by combining NFC or RFID technology and 2FA (two-factor authentication) to minimize the crimes such as fraudulence, scams, and so on. The results showed that the system or prototype could work and function properly. The process of reading NFC tags and the use of 2F also runs quickly and safely
Drug resistance and viral tropism in HIV-1 subtype C-infected patients in KwaZulu-Natal, South Africa: implications for future treatment options
Article approval pendingDrug resistance poses a significant challenge for the successful application of highly active antiretroviral therapy (HAART) globally. Furthermore, emergence of HIV-1 isolates that preferentially use CXCR4 as a coreceptor for cell entry, either as a consequence of natural viral evolution or HAART use, may compromise the efficacy of CCR5 antagonists as alternative antiviral therapy
Effectiveness of low speed autonomous emergency braking in real-world rear-end crashes
This study set out to evaluate the effectiveness of low speed autonomous emergency braking
(AEB) technology in current model passenger vehicles, based on real-world crash experience. The
Validating Vehicle Safety through Meta-Analysis (VVSMA) group comprising a collaboration of
government, industry consumer organisations and researchers, pooled data from a number of
countries using a standard analysis format and the established MUND approach. Induced exposure
methods were adopted to control for any extraneous effects. The findings showed a 38 percent overall
reduction in rear-end crashes for vehicles fitted with AEB compared to a comparison sample of similar
vehicles. There was no statistical evidence of any difference in effect between urban (â€60km/h) and
rural (>60km/h) speed zones. Areas requiring further research were identified and widespread
fitment through the vehicle fleet is recommended
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Protection and relocation of frescoes during construction at the Harvard Art Museums
This paper is published in the book âSubliming Surfaces: Volatile Binding Media in Heritage Conservationâ, ed. Christina Rozeik (University of Cambridge Museums, 2018), pp. 141-152.Three frescoes painted in the 1930âs by social realist artists Lewis Rubenstein and Rico Lebrun needed to be consolidated, protected and moved during major renovations to the Harvard Art Museums between 2009 2 and 2014. During construction, the frescoes, measuring a total of 22.3 m , would be subject to relocation, shock and vibration, climate extremes and structural intervention. Conservators devised a cyclododecane (CDD) facing as part of a multi-layered system of protection designed to remain in place for several years. Two of the fresco walls, weighing many tons, were cut from the existing masonry and moved by crane, while one of the frescos remained in situ on the inside of an exterior wall, protected from the elements by a purpose-built housing. The project allowed comparison of two techniques for applying molten CDD on a large scale: by spraying through a gun designed for hot-melt glue, and by painting with hog hair brushes. Ultimately, brushes proved quicker and easier to use. Testing at various temperatures revealed new information about CDDâs behaviour. Though it reportedly melts at 60â71°C, it was significantly more fluid and easier to apply during testing in the 80â85°C range. Heating the CDD above 85°C using a hot glue gun resulted in samples that became tacky shortly after application. FTIR analysis revealed changes in the aliphatic stretching and bending regions of CDD in these samples. The analysis suggests that CDD can be safely heated to 80°C without causing molecular changes. The CDD facing successfully preserved the fragile fresco surfaces, remaining intact under a Marvelseal barrier film for over three years. Upon removal of this protective seal the CDD completely sublimated with the help of fans, localised heating and ventilation
Assessing plant performance in the Enviratron
Background: Assessing the impact of the environment on plant performance requires growing plants under controlled environmental conditions. Plant phenotypes are a product of genotype Ă environment (G Ă E), and the Enviratron at Iowa State University is a facility for testing under controlled conditions the effects of the environment on plant growth and development. Crop plants (including maize) can be grown to maturity in the Enviratron, and the performance of plants under different environmental conditions can be monitored 24 h per day, 7 days per week throughout the growth cycle.
Results: The Enviratron is an array of custom-designed plant growth chambers that simulate different environmental conditions coupled with precise sensor-based phenotypic measurements carried out by a robotic rover. The rover has workflow instructions to periodically visit plants growing in the different chambers where it measures various growth and physiological parameters. The rover consists of an unmanned ground vehicle, an industrial robotic arm and an array of sensors including RGB, visible and near infrared (VNIR) hyperspectral, thermal, and time-of-flight (ToF) cameras, laser profilometer and pulse-amplitude modulated (PAM) fluorometer. The sensors are autonomously positioned for detecting leaves in the plant canopy, collecting various physiological measurements based on computer vision algorithms and planning motion via âeye-in-handâ movement control of the robotic arm. In particular, the automated leaf probing function that allows the precise placement of sensor probes on leaf surfaces presents a unique advantage of the Enviratron system over other types of plant phenotyping systems.
Conclusions: The Enviratron offers a new level of control over plant growth parameters and optimizes positioning and timing of sensor-based phenotypic measurements. Plant phenotypes in the Enviratron are measured in situâin that the rover takes sensors to the plants rather than moving plants to the sensors
A systematic review of the effect of therapistsâ internalised models of relationships on the quality of the therapeutic relationship
The quality of the therapeutic relationship has been identified as a key factor in predicting client outcomes, accounting for around 8% of variation (Horvath, Del Re, FlĂŒckiger, & Symonds, 2011; Martin, Garske, & Davis, 2000; Wampold, 2001). Although therapist factors have been seen as less relevant to therapeutic relationship quality than client factors, focus on therapist factors has steadily increased in line with the view that the therapist responds differently to different clients, due to their own personal characteristics and unconscious processes. Relational theory suggests that the therapistâs particular qualities combine with the clientâs particular qualities to form a unique interpersonal context (e.g. Wachtel, 2008). Safran and Muran (2000) suggest that the interpersonal context is heavily influenced by client and therapist internalised patterns of relating formed in early childhood. Evidence shows that certain therapist factors do affect therapeutic relationship quality; the qualities of dependability, warmth and responsiveness in therapists have all been found to create stronger alliances (Ackerman & Hilsenroth, 2003). The importance of these mostly interpersonal characteristics imply that the internalised relational models of therapists may also be important in determining the type of relationship that is built and the therapeutic processes occurring within
Jet energy measurement with the ATLAS detector in proton-proton collisions at root s=7 TeV
The jet energy scale and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass energy of âs = 7TeV corresponding to an integrated luminosity of 38 pb-1. Jets are reconstructed with the anti-kt algorithm with distance parameters R=0. 4 or R=0. 6. Jet energy and angle corrections are determined from Monte Carlo simulations to calibrate jets with transverse momenta pTâ„20 GeV and pseudorapidities {pipe}η{pipe}<4. 5. The jet energy systematic uncertainty is estimated using the single isolated hadron response measured in situ and in test-beams, exploiting the transverse momentum balance between central and forward jets in events with dijet topologies and studying systematic variations in Monte Carlo simulations. The jet energy uncertainty is less than 2. 5 % in the central calorimeter region ({pipe}η{pipe}<0. 8) for jets with 60â€pT<800 GeV, and is maximally 14 % for pT<30 GeV in the most forward region 3. 2â€{pipe}η{pipe}<4. 5. The jet energy is validated for jet transverse momenta up to 1 TeV to the level of a few percent using several in situ techniques by comparing a well-known reference such as the recoiling photon pT, the sum of the transverse momenta of tracks associated to the jet, or a system of low-pT jets recoiling against a high-pT jet. More sophisticated jet calibration schemes are presented based on calorimeter cell energy density weighting or hadronic properties of jets, aiming for an improved jet energy resolution and a reduced flavour dependence of the jet response. The systematic uncertainty of the jet energy determined from a combination of in situ techniques is consistent with the one derived from single hadron response measurements over a wide kinematic range. The nominal corrections and uncertainties are derived for isolated jets in an inclusive sample of high-pT jets. Special cases such as event topologies with close-by jets, or selections of samples with an enhanced content of jets originating from light quarks, heavy quarks or gluons are also discussed and the corresponding uncertainties are determined. © 2013 CERN for the benefit of the ATLAS collaboration
Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
The inclusive and dijet production cross-sections have been measured for jets
containing b-hadrons (b-jets) in proton-proton collisions at a centre-of-mass
energy of sqrt(s) = 7 TeV, using the ATLAS detector at the LHC. The
measurements use data corresponding to an integrated luminosity of 34 pb^-1.
The b-jets are identified using either a lifetime-based method, where secondary
decay vertices of b-hadrons in jets are reconstructed using information from
the tracking detectors, or a muon-based method where the presence of a muon is
used to identify semileptonic decays of b-hadrons inside jets. The inclusive
b-jet cross-section is measured as a function of transverse momentum in the
range 20 < pT < 400 GeV and rapidity in the range |y| < 2.1. The bbbar-dijet
cross-section is measured as a function of the dijet invariant mass in the
range 110 < m_jj < 760 GeV, the azimuthal angle difference between the two jets
and the angular variable chi in two dijet mass regions. The results are
compared with next-to-leading-order QCD predictions. Good agreement is observed
between the measured cross-sections and the predictions obtained using POWHEG +
Pythia. MC@NLO + Herwig shows good agreement with the measured bbbar-dijet
cross-section. However, it does not reproduce the measured inclusive
cross-section well, particularly for central b-jets with large transverse
momenta.Comment: 10 pages plus author list (21 pages total), 8 figures, 1 table, final
version published in European Physical Journal
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