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Illumination Dependent Electrical Data Identification of the CdZnO Interlayered Metal-Semiconductor Structures
No full textElectrical data of the Schottky structure with CdZnO interlayer have been evaluated for different illumination intensities. Considering such parameters as, the ideality factor (n), reverse saturation current (I-o), zero bias barrier height (phi(Bo)), series and shunt resistances (R-s and R-sh) and surface states (N-ss), we concluded that these parameters extremely depend on the illumination power and applied bias voltage. In consequence of the Ohm's law and Norde's method used for R-s determination, the R-s values decreased with increasing illumination intensity. The energy distribution of the N-ss and voltage dependent profile of resistance (R-i) of the structure were extracted from the forward bias current-voltage (I-V) data. The fabricated CdZnO interlayered metal-semiconductor structure appears to have photodiode behavior. Accordingly, the alteration in the basic electrical parameters by the increment in illumination levels indicates that, the carrier generation takes place in the depletion layer and the conductivity of the CdZnO interlayered structure is improved
Autonomous Vehicle Convoy Formation Control with Size/Shape Switching for Automated Highways
No full textToday's semi-autonomous vehicles are gradually moving towards full autonomy. This transition requires developing effective control algorithms for handing complex autonomous tasks. Driving as a group of vehicles, referred to as a convoy, on automated highways is a highly important and challenging task that autonomous driving systems must deal with. This paper considers the control problem of a vehicle convoy modeled with linear dynamics. The convoy formation requirement is presented in terms of a quadratic performance index to minimize The convoy formation control is formulated as a receding horizon linear-quadratic (LQ) optimal control problem. The receding horizon control law is innovatively defined via the solution to the algebraic Riccati equation. The solution matrix and therefore the receding horizon control law are obtained in the closed-form. A control architecture consisting of four algorithms is proposed to handle formation size/shape switching. The closed-form control law is at the core of these algorithms. Simulation results are provided to justify the models, solutions, and proposed algorithms
Improved model-independent determination of the strong-phase difference between D-0 and (D)over-bar(0) -> (KS,LK+)-K-0 K- decays
No full textWe present a measurement of the strong-phase difference between D-0 and (D) over bar (0) -> (KS,LK+K-)-K-0 decays, performed through a study of quantum-entangled pairs of charm mesons. The measurement exploits a data sample equivalent to an integrated luminosity of 2.93 fb(-1), collected by the BESIII detector in e(+)e(-) collisions corresponding to the mass of the psi(3770) resonance. The strong-phase difference is an essential input to the determination of the Cabibbo-Kobayashi-Maskawa (CKM) angle gamma/phi(3) through the decay B- -> DK-, where D can be either a D-0 or a (D) over bar (0) decaying to (KS,LK+K-)-K-0. This is the most precise measurement to date of the strong-phase difference in these decays
Search for intermediate resonances and dark gauge bosons in J/psi -> gamma pi(0)eta '
No full textWe report on an analysis of the decay J/psi -> gamma pi(0)eta' using a sample of o1310.6 +/- 7.0THORN x 10(6) J/psi events collected with the BESIII detector. We search for the CP-violating process eta c -> pi(0)eta' and a dark gauge boson U' in J/psi -> U'eta', U' -> gamma pi 0, pi 0 -> gamma gamma. No evidence of an.c signal is observed in the pi(0)eta' invariantmass spectrum and the upper limit of the branching fraction is determined to be 5.6 x 10(-5) at the 90% confidence level. We also find no evidence of U' production and set upper limits at the 90% confidence level on the product branching fraction B(J/psi -> U'eta') x B(U' -> pi(0)gamma) in the range between (0.8 - 6.5) x 10(-7) for 0.2 omega eta' with omega -> gamma pi(0). The branching fraction of J/psi -> omega eta' is found to be (1.87 +/- 0.09 +/- 0.12) x 10(-4), where the first uncertainty is statistical and the second is systematic, with a precision that is improved by a factor of 1.4 over the previously published BESIII measurement
Experimental marketing and augmented reality: a research to determine for the effect of augmented reality on brand preference
No full textBu çalışmada, son yıllarda yoğun şekilde kullanımı görülen arttırılmış gerçekliğin, pazarlama ve marka alanlarında kullanımı ele alınmaktadır. Artırılmış gerçeklik, 1950’li yıllarda ortaya çıkıp günümüze kadar gelişimini sürdürmüş teknolojik bir çıktıdır. Bilgisayar ortamında oluşturulan verilerin gerçek dünyaya yani yaşanılan ortama aktarılması arttırılmış gerçeklik teknolojisiyle mümkün olmaktadır. Arttırılmış gerçeklik sunduğu kapasite nedeniyle deneyimlere odaklanan günümüz pazarlama anlayışında tüketicilerin hoş, akılda kalıcı deneyimlere sahip olmasını isteyen markalar ve işletmeler tarafından deneyim odaklı pazarlama aracı olarak kullanılabilmektedir. Arttırılmış gerçekliğin tüketicilerin satın alma öncesi ürün ve hizmetleri deneyimlemesine olanak sunması nedeniyle marka tercihi üzerinde olumlu etkiye sahip olduğu söylenebilmektedir. Bu çalışmada arttırılmış gerçeklik deneyim odaklı pazarlama aracı olarak ele alınmakta, arttırılmış gerçekliğin marka tercihi üzerindeki etkisinin ortaya konması amaçlanmaktadır. Söz konusu amaç doğrultusunda nicel araştırma yöntemlerinden anket tekniği kullanılarak 454 kişinin katılımıyla bir araştırma gerçekleştirilmiştir. Elde edilen bulgular arttırılmış gerçeklik teknolojisinin deneyim odaklı pazarlama aracı olarak marka iletişiminde kullanılabilecek önemli bir kapasiteyi barındırdığına işaret etmiştir. Markaların henüz bu teknolojinin kapasitesinden yeterli düzeyde yararlanmadığının tespit edildiği araştırmada, bu teknolojiden faydalanan markaların tüketicilerin marka tercihlerini yönlendirebilme ve yenilikçi marka imajı elde etme avantajını yakalayabileceğini, tüketicilerin satın alım öncesi markalara ilişkin deneyim elde etmesini olanaklı kılabileceği ortaya konmuştur
Pandemi Sonrası Küresel Düzen: ABD-Çin Rekabeti ve Rusya
No full textPandemi Sonrası Küresel Düzen:ABD-Çin Rekabeti ve Rusy
Practical Evidence-Based Evaluation of a Combined Heat Reduction Technique for Power Transformer Buildings
No full textTransformer buildings are at the heart of the effective operation of distribution systems, and heating problems of transformers under severe operational conditions are among the main factors affecting the lifetime, efficiency, technical losses, etc., of such important power system assets. It is crucial that the inside temperature of transformer buildings is higher than the outside temperature due to the operation of the transformer and the effect of ambient conditions. This issue may cause several problems such as additional transformer aging, losses, and moisture. The main purpose of this study is to decrease the inside temperature of transformer buildings; in other words, to prevent the inside temperature from being higher than the outside temperature. To realize this, it is recommended to apply a combined heat reduction technique by covering the outer surface with a reflective surface and use a low-emitting material on the inner surface. The relevant results of the practical evidence in this manner are presented in detail at a distribution system in Turkey with different climate and loading conditions in the summertime
Toxin-neutralizing antibodies elicited by naturally acquired cutaneous anthrax are elevated following severe disease and appear to target conformational epitopes
Get PDFUnderstanding immune responses to native antigens in response to natural infections can lead to improved approaches to vaccination. This study sought to characterize the humoral immune response to anthrax toxin components, capsule and spore antigens in individuals (n = 46) from the Kayseri and Malatya regions of Turkey who had recovered from mild or severe forms of cutaneous anthrax infection, compared to regional healthy controls (n = 20). IgG antibodies to each toxin component, the poly-γ-D-glutamic acid capsule, the Bacillus collagen-like protein of anthracis (BclA) spore antigen, and the spore carbohydrate anthrose, were detected in the cases, with anthrax toxin neutralization and responses to Protective Antigen (PA) and Lethal Factor (LF) being higher following severe forms of the disease. Significant correlative relationships among responses to PA, LF, Edema Factor (EF) and capsule were observed among the cases. Though some regional control sera exhibited binding to a subset of the tested antigens, these samples did not neutralize anthrax toxins and lacked correlative relationships among antigen binding specificities observed in the cases. Comparison of serum binding to overlapping decapeptides covering the entire length of PA, LF and EF proteins in 26 cases compared to 8 regional controls revealed that anthrax toxin-neutralizing antibody responses elicited following natural cutaneous anthrax infection are directed to conformational epitopes. These studies support the concept of vaccination approaches that preserve conformational epitopes. Copyright: © 2020 Dumas et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Search for baryon and lepton number violating decays D+ -> (Lambda)over-bar((Sigma)over-bar(0))e(+) and D+ -> Lambda(Sigma(0))e(+)
No full textUsing a 2.93 fb(-1) data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to (8296 +/- 31 +/- 64) x 10(3) D+ D- pairs, we search for the baryon and lepton number violating decays D+ -> (Lambda) over bar((Sigma) over bar (0))e(+) and D+ -> Lambda(Sigma(0))e(+). No obvious signals are found with the current statistics and upper limits on the branching fractions of these four decays are set at the level of 10(-6) at 90% confidence level
Effects of Digital Filtering on the Classification Performance of Steady-State Visual Evoked Potential Based Brain-Computer Interfaces
No full textThe electrical activity that occurs during the
communication of neurons is recorded by a method called
electroencephalography. Brain computer interfaces utilize
various electrophysiological sources obtained from different
regions of the brain. The electrophysiological source used in this
study is the electrical activity seen in the occipital lobes as a result
of visual stimuli that flicker at certain frequencies, and is called
steady-state visual evoked potential. The main goal in this work is
not to try to improve the classification performance but to
investigate the effects of different digital filtering algorithms on
classification performance. The effects of the high pass and low
pass filtering on the classification performance in steady-state
visual evoked potential based brain computer interfaces are
investigated. As a result of this study, no significant change in the
classification performances of designs with only high pass
filtering, and high and low pass filtering, has been observed. In
addition, it has been observed that only the designs include a
high-pass filter implementation give better classification
performance in many cases. Consequently, it is concluded that
low-pass filtering in steady-state visual evoked potential based
brain-computer interfaces does not provide the desired
contribution to classification performance