18,805 research outputs found
Promoting the Products of Speed Electronics Using a Commercial Website
Speed Electronics is a home industry which producing electronic spare-parts for electronic goods. Since this company is still developing, it has to deal with several promotion problems. To solve this problem, Speed Electronics really needs to have a media which can promote its products and attract prospective customers. Thus, a commercial website will be suitable for Speed Electronics. It will consist of “Home”, “About Us”, “Our Products”, “Our Service”, “Our Distributors/Stores” and “How to Contact Us” parts. I believe only by seeing the pictures and the descriptions inside the website, the customers will be updated with the newest information about the spare-parts that Speed Electronics sell. Moreover, when they want to order the spare-parts, they can directly look at this website to avoid miscommunication. Besides, Speed Electronics will expectedly be able to widen its market or even get a chance to export its products to other countrie
The Perceptions of Petra Christian University Male and Female Students Toward the Language Used in a Hotel Website and the Hotel Itself
The purpose of this study is to analyze the perceptions of the male and female students of Petra Christian University toward the language used in a three-star hotel website in Surabaya and toward the hotel itself. I want to know if the perceptions toward the language will influence the perceptions toward the hotel which writes the website. The respondents of this study are 30 male and 30 female students of Petra Christian University. Here, there are some similarities and differences found between the male and female students' perceptions toward the language used in a three-star hotel website in Surabaya and toward the hotel itself. It seems that the female students usually see language as one important way to know the hotel. On the other hand, it seems that the male students do not really care about what kind of language that is used in a hotel websit
Measurement of heat transfer and pressure drop in rectangular channels with turbulence promoters
Periodic rib turbulators were used in advanced turbine cooling designs to enhance the internal heat transfer. The objective of the present project was to investigate the combined effects of the rib angle of attack and the channel aspect ratio on the local heat transfer and pressure drop in rectangular channels with two opposite ribbed walls for Reynolds number varied from 10,000 to 60,000. The channel aspect ratio (W/H) was varied from 1 to 2 to 4. The rib angle of attack (alpha) was varied from 90 to 60 to 45 to 30 degree. The highly detailed heat transfer coefficient distribution on both the smooth side and the ribbed side walls from the channel sharp entrance to the downstream region were measured. The results showed that, in the square channel, the heat transfer for the slant ribs (alpha = 30 -45 deg) was about 30% higher that of the transverse ribs (alpha = 90 deg) for a constant pumping power. However, in the rectangular channels (W/H = 2 and 4, ribs on W side), the heat transfer at alpha = 30 -45 deg was only about 5% higher than 90 deg. The average heat transfer and friction correlations were developed to account for rib spacing, rib angle, and channel aspect ratio over the range of roughness Reynolds number
Large evolution of the bilinear Higgs coupling parameter in SUSY models and reduction of phase sensitivity
The phases in a generic low-energy supersymmetric model are severely
constrained by the experimental upper bounds on the electric dipole moments of
the electron and the neutron. Coupled with the requirement of radiative
electroweak symmetry breaking, this results in a large degree of fine tuning of
the phase parameters at the unification scale. In supergravity type models,
this corresponds to very highly tuned values for the phases of the bilinear
Higgs coupling parameter and the universal trilinear coupling . We
identify a cancellation/enhancement mechanism associated with the
renormalization group evolution of , which, in turn, reduces such
fine-tuning quite appreciably without taking recourse to very large masses for
the supersymmetric partners. We find a significant amount of reduction of this
fine-tuning in nonuniversal gaugino mass models that do not introduce any new
phases.Comment: Version to appear in Phys.Rev.D. Insignificant changes like a few
typos corrected. 26 pages, 7 figures, LaTe
On the EDM Cancellations in D-brane models
We analyze the possibility of simultaneous electron, neutron, and mercury
electric dipole moment (EDM) cancellations in the mSUGRA and D--brane models.
We find that the mercury EDM constraint practically rules out the cancellation
scenario in D-brane models whereas in the context of mSUGRA it is still allowed
with some fine-tuning.Comment: 10 pages, to appear in Phys. Rev. Let
One-loop contributions of charginos and neutralinos to W-pair production in E+ E- collisions
We study the one-loop effects of charginos and neutralinos on the helicity
amplitudes for \eeww in the minimal supersymmetric standard model. The
calculation is tested by using two methods. First, the sum rule for the form
factors between \eeww and the process where the external bosons are
replaced by the corresponding Goldstone bosons is employed to test
the analytic expression and the accuracy of the numerical program. Second, the
decoupling property in the large mass limit is used to test the overall
normalization of the amplitudes. These two tests are most effectively carried
out when the amplitudes are expanded in terms of the modified minimal
subtraction () couplings of the standard model. The resulting
perturbation expansion is valid at collider energies below and around the
threshold of the light supersymmetric particles. We find that the corrections
to the cross section of the longitudinally polarized -pair production can be
as large as -1.4% at the threshold of the light chargino-pair production for
large scattering angles. We also study the effects of the CP-violating phase in
the chargino and neutralino sectors on the helicity amplitudes. We find that
the resulting CP-violating asymmetries can be at most 0.1%.Comment: 30 pages, 25 figures, Final verision, To appear in Physical Review D,
Several sentences are improve
Lossy/Lossless Floating/Grounded Inductance Simulation Using One DDCC
In this work, we present new topologies for realizing one lossless grounded inductor and two floating, one lossless and one lossy, inductors employing a single differential difference current conveyor (DDCC) and a minimum number of passive components, two resistors, and one grounded capacitor. The floating inductors are based on ordinary dual-output differential difference current conveyor (DO-DDCC) while the grounded lossless inductor is based one a modified dual-output differential difference current conveyor (MDO-DDCC). The proposed lossless floating inductor is obtained from the lossy one by employing a negative impedance converter (NIC). The non-ideality effects of the active element on the simulated inductors are investigated. To demonstrate the performance of the proposed grounded inductance simulator as an example, it is used to construct a parallel resonant circuit. SPICE simulation results are given to confirm the theoretical analysis
Physical Multi-Layer Phantoms for Intra-Body Communications
This paper presents approaches to creating tissue mimicking materials that
can be used as phantoms for evaluating the performance of Body Area Networks
(BAN). The main goal of the paper is to describe a methodology to create a
repeatable experimental BAN platform that can be customized depending on the
BAN scenario under test. Comparisons between different material compositions
and percentages are shown, along with the resulting electrical properties of
each mixture over the frequency range of interest for intra-body
communications; 100 KHz to 100 MHz. Test results on a composite multi-layer
sample are presented confirming the efficacy of the proposed methodology. To
date, this is the first paper that provides guidance on how to decide on
concentration levels of ingredients, depending on the exact frequency range of
operation, and the desired matched electrical characteristics (conductivity vs.
permittivity), to create multi-layer phantoms for intra-body communication
applications
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