4,770 research outputs found
Consumer reactions to self-expressive brand display
Brand names and other brand elements are often displayed on one’s body or clothes for the purpose of personal value expression. Despite the frequency of such brand displays in the marketplace, we know little about how consumers respond to seeing brands in this fashion. A recent view of consumer brand identification—the concept of brand engagement in self-concept (BESC)—provides a unique perspective from which to explore how consumers react when see-ing brands displayed by others. Across three experiments, we demonstrate a consistent pattern of findings indicating that consumers’ reactions to others ostentatiously displaying brands as means of value expression are strongest for those with high BESC levels and with a high value focus during brand exposure. The research highlights important variations in consumers’ responses to self-expressive brand stimuli associated with others; implications for branding practice and re-search are provided.Brand engagement; self-concept; advertising; brand management
Kulonbozo oktatasi rendszerek es formak kozotti tudastranszfer es annak merhetosege
Az információ megszerzése és átadása sohasem volt olyan nagy jelentőségű mint napjainkban. Aki a legfrissebb, legmagasabb szintű információval rendelkezik az előnyre tesz versenytársaival szemben. Igy érthető, hogy a gazdaság és az erősödő piaci verseny egyre nagyobb nyomást gyakorol az oktatási intézményekre is. A vásárlók (hallgatók) a világ minden táján kritikusan figyelik, hogy a pénzükért naprakész tudást kapnak-e. Az oktatási intézményeket (középiskolákat és egyetemeket) Nagy-Britanniában például rangsorolják mind az oktatás színvonala, mind a kutatásban elért eredményei alapján. Ezek az információk megjelennek a napilapokban és egyértelműen jelzik az adott intézmény rangját és a kibocsátott diploma piaci értékét. Az egyre erősödő hallgatókért történő versenyben tehát igen fontos szerepe van a naprakész tudásnak és a több területen is felhasználható készségek oktatásának. A felsőoktatás egyre inkább szolgáltató nagyüzemmé válik, amely igyekszik minél gyorsabban reagálni a piac igényeire. A piac nagy választékot, rugalmas formákat és egymásra építhetőséget kíván, így az egyetemek tárgyai legtöbb helyen már modulokból épülnek fel, ahol a hallgatónak a kötött tantárgyak mellett választható tantárgyaik is vannak.
Másik világjelenség az egész életen keresztül tartó folyamatos tanulás igénye. Elfogadott tény, hogy bár különböző idő alatt szakterülettől függően elavul a tudás. Igy a diploma csak egy állomása, de nem a végállomása a tanulásnak. Hogyan tudnak az oktatási intézmények megfelelni az egyre növekvő számú első diplomás képzésének és egy időben hogyan tudják kielégíteni a posztgraduális hosszabb, rövidebb ideig tartó képzések iránti igényt.
Ez a dilemma jelen van a nyugati és a keleti oktatási intézményekben egyaránt. A lényeges különbség a rendelkezésre álló időben van. Ami Nagy Britanniában például mintegy ötven év alatt zajlott le az Magyarországon megpróbál megtörténni tíz év alatt. A felgyorsulás érzékeltetésére talán célszerű röviden végigtekintenünk a brit oktatásban végbemenő változásokat az elmúlt ötven évben. Ha ezt párhuzamba állítjuk a magyarországi 1990-töl 2000-ig terjedő tíz esztendő főbb lépéseivel elgondolkodtató képet kapunk
HESS J1943+213: a non-classical high-frequency-peaked BL Lac object
HESS J1943+213 is an unidentified TeV source that is likely a
high-frequency-peaked BL Lac (HBL) object but also compatible with a pulsar
wind nebula (PWN) nature. Each of these enormously different astronomical
interpretations is supported by some of the observed unusual characteristics.
In order to finally classify and understand this object we took a three-pronged
approach, through time-domain, high angular resolution, and multi-frequency
radio studies. First, our deep time-domain observations with the Arecibo
telescope failed to uncover the putative pulsar powering the proposed PWN. We
conclude with ~70% certainty that HESS J1943+213 does not host a pulsar.
Second, long-baseline interferometry of the source with e-MERLIN at 1.5- and 5-
GHz, shows only a core, a point source at ~ 1 - 100 milli-arcsecond resolution.
Its 2013 flux density is about one-third lower than detected in 2011
observations with similar resolution. This radio variability of the core
strengthens the HBL object hypothesis. More evidence against the PWN scenario
comes, third, from the radio spectrum we compiled. The extended structure
follows a power-law behavior with spectral index alpha = -0.54 +- 0.04 while
the core component is flat spectrum (alpha = -0.03 +- 0.03). In contrast, the
radio synchrotron emission of PWNe predicts a single power-law distribution.
Overall we rule out the PWN hypothesis and conclude the source is a BL Lac
object. The consistently high fraction (70%) of the flux density from the
extended structure then leads us to conclude that HESS J1943+213 must be a
non-classical HBL object.Comment: 8 pages, 4 figures, ApJ submitte
VLBI observations of a flared optical quasar CGRaBS J0809+5341
A bright optical flare was detected in the high-redshift () quasar
CGRaBS J0809+5341 on 2014 April 13. The absolute magnitude of the object
reached during the flare, making it the brightest one (in flaring
stage) among all known quasars so far. The 15 GHz flux density of CGRaBS
J0809+5341 monitored in the period from 2008 to 2016 also reached its peak at
the same time. To reveal any structural change possibly associated with the
flare in the innermost radio structure of the quasar, we conducted a pilot very
long baseline interferometry (VLBI) observation of CGRaBS J0809+5341 using the
European VLBI Network (EVN) at 5 GHz on 2014 November 18, about seven months
after the prominent optical flare. Three epochs of follow-up KaVA (Korean VLBI
Network and VLBI Exploration of Radio Astrometry Array) observations were
carried out at 22 and 43 GHz frequencies from 2015 February 25 to June 4, with
the intention of exploring a possibly emerging new radio jet component
associated with the optical flare. However, these high-resolution VLBI
observations revealed only the milliarcsecond-scale compact "core" that was
known in the quasar from earlier VLBI images, and showed no sign of any
extended jet structure. Neither the size, nor the flux density of the "core"
changed considerably after the flare according to our VLBI monitoring. The
results suggest that any putative radio ejecta associated with the major
optical and radio flare could not yet be separated from the "core" component,
or the newly-born jet was short-lived.Comment: 4 figures, 2 tables, accepted for publication in PAS
Analysis and design of a capsule landing system and surface vehicle control system for Mars exploration
Problems related to the design and control of a mobile planetary vehicle to implement a systematic plan for the exploration of Mars are reported. Problem areas include: vehicle configuration, control, dynamics, systems and propulsion; systems analysis, terrain modeling and path selection; and chemical analysis of specimens. These tasks are summarized: vehicle model design, mathematical model of vehicle dynamics, experimental vehicle dynamics, obstacle negotiation, electrochemical controls, remote control, collapsibility and deployment, construction of a wheel tester, wheel analysis, payload design, system design optimization, effect of design assumptions, accessory optimal design, on-board computer subsystem, laser range measurement, discrete obstacle detection, obstacle detection systems, terrain modeling, path selection system simulation and evaluation, gas chromatograph/mass spectrometer system concepts, and chromatograph model evaluation and improvement
Human-Robot Interaction
Human-robot interaction (HRI) is a discipline investigating the factors affecting the interactions between humans and robots. It is important to evaluate how the design of interfaces affect the human's ability to perform tasks effectively and efficiently when working with a robot. By understanding the effects of interface design on human performance, workload, and situation awareness, interfaces can be developed to appropriately support the human in performing tasks with minimal errors and with appropriate interaction time and effort. Thus, the results of research on human-robot interfaces have direct implications for the design of robotic systems. For efficient and effective remote navigation of a rover, a human operator needs to be aware of the robot's environment. However, during teleoperation, operators may get information about the environment only through a robot's front-mounted camera causing a keyhole effect. The keyhole effect reduces situation awareness which may manifest in navigation issues such as higher number of collisions, missing critical aspects of the environment, or reduced speed. One way to compensate for the keyhole effect and the ambiguities operators experience when they teleoperate a robot is adding multiple cameras and including the robot chassis in the camera view. Augmented reality, such as overlays, can also enhance the way a person sees objects in the environment or in camera views by making them more visible. Scenes can be augmented with integrated telemetry, procedures, or map information. Furthermore, the addition of an exocentric (i.e., third-person) field of view from a camera placed in the robot's environment may provide operators with the additional information needed to gain spatial awareness of the robot. Two research studies investigated possible mitigation approaches to address the keyhole effect: 1) combining the inclusion of the robot chassis in the camera view with augmented reality overlays, and 2) modifying the camera frame of reference. The first study investigated the effects of inclusion and exclusion of the robot chassis along with superimposing a simple arrow overlay onto the video feed of operator task performance during teleoperation of a mobile robot in a driving task. In this study, the front half of the robot chassis was made visible through the use of three cameras, two side-facing and one forward-facing. The purpose of the second study was to compare operator performance when teleoperating a robot from an egocentric-only and combined (egocentric plus exocentric camera) view. Camera view parameters that are found to be beneficial in these laboratory experiments can be implemented on NASA rovers and tested in a real-world driving and navigation scenario on-site at the Johnson Space Center
Discovery of macrocyclic inhibitors of apurinic/apyrimidinic endonuclease 1
Apurinic/apyrimidinic endonuclease 1 (APE1) is an essential base excision repair enzyme that is upregulated in a number of cancers, contributes to resistance of tumors treated with DNA-alkylating or -oxidizing agents, and has recently been identified as an important therapeutic target. In this work, we identified hot spots for binding of small organic molecules experimentally in high resolution crystal structures of APE1 and computationally through the use of FTMAP analysis (http://ftmap.bu.edu/). Guided by these hot spots, a library of drug-like macrocycles was docked and then screened for inhibition of APE1 endonuclease activity. In an iterative process, hot-spot-guided docking, characterization of inhibition of APE1 endonuclease, and cytotoxicity of cancer cells were used to design next generation macrocycles. To assess target selectivity in cells, selected macrocycles were analyzed for modulation of DNA damage. Taken together, our studies suggest that macrocycles represent a promising class of compounds for inhibition of APE1 in cancer cells.This work was supported by grants from the National Institutes of Health (Grant R01CA205166 to M.R.K. and M.M.G. and Grant R01CA167291 to M.R.K.) and by the Earl and Betty Herr Professor in Pediatric Oncology Research, Jeff Gordon Children's Foundation, and the Riley Children's Foundation (M.R.K.). Work at the BU-CMD (J.A.P., L.E.B., R.T.) is supported by the National Institutes of Health, Grant R24 GM111625. D.B. and S.V. were supported by the National Institutes of Health, Grant R35 GM118078. (R35 GM118078 - National Institutes of Health; R01CA205166 - National Institutes of Health; R01CA167291 - National Institutes of Health; R24 GM111625 - National Institutes of Health; Earl and Betty Herr Professor in Pediatric Oncology Research; Jeff Gordon Children's Foundation; Riley Children's Foundation)Accepted manuscriptSupporting documentatio
Discrete reduction patterns of parvalbumin and calbindin D-28k immunoreactivity in the dorsal lateral geniculate nucleus and the striate cortex of adult macaque monkeys after monocular enucleation
We analyzed the immunohistochemical distribution of the two calcium-binding proteins, parvalbumin (PV) and calbindin D-28k (CB), in the primary visual cortex and lateral dorsal geniculate nucleus (dLGN) of monocularly enucleated macaque monkeys (Macaca fascicularis and Macaca nemestrind) in order to determine how the expression of PV and CB is affected by functional inactivity. The monkeys survived 1-17 weeks after monocular enucleation. The distribution pattern of each of the proteins was examined immunocytochemically using monoclonal antibodies and compared with that of the metabolic marker cytochrome oxidase (CO). We recorded manually the number of immunostained neurons and estimated the concentration of immunoreactive staining product using a computerized image-acquisition system. Our results indicate a decrease of approximately 30% in the labeling of PV-immunoreactive (ir) neuropil particularly in those layers of denervated ocular-dominance columns receiving the geniculocortical input. There was no change in the number of PV-ir neurons in any compartment irrespective of the enucleation interval. For CB-ir, we found a 20% decrease in the neuropil labeling in layer 2/3 of the denervated ocular-dominance columns. In addition, a subset of pyramidal CB-ir neurons in layers 2 and 4B, which are weakly stained in control animals, showed decreased labeling. In the dLGN of enucleated animals, PV-ir and CB-ir were decreased only in the neuropil of the denervated layers. From these results, we conclude that cortical interneurons and geniculate projection neurons still express PV and CB in their cell bodies after disruption of the direct functional input from one eye. The only distinct decrease of PV and CB expression is seen in axon terminals from retinal ganglion cells in the dLGN, and in the axons and terminals of both geniculocortical projection cells and cortical interneurons in the cerebral corte
A comparison of statistical hadronization models
We investigate the sensitivity of fits of hadron spectra produced in heavy
ion collisions to the choice of statistical hadronization model. We start by
giving an overview of statistical model ambiguities, and what they tell us
about freeze-out dynamics. We then use Montecarlo generated data to determine
sensitivity to model choice. We fit the statistical hadronization models under
consideration to RHIC data, and find that a comparison fits can shed
light on some presently contentious questions.Comment: Proceedings for SQM2003 [7th Int. Conf. on Strangeness in Quark
Matter (Atlantic Beach, NC, USA, Mar 12-17, 2003)], to be published in
Journal of Physics G (Typos corrected, reference added
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