1,626 research outputs found
Pengaruh E-servqual Terhadap Customer Satisfaction, Trust, Dan Repeat USAge
Electronic banking (e-banking) is now becoming increasingly popular in Indonesia. E-SERVQUAL designed to measure the gap between expectations and perceptions of the electronic services provided. This study aims to investigate empirically the influence of E-SERVQUAL, customer satisfaction, trust and repeat USAge of e-banking. Approach the survey method used in this study to examine the dimensions of E-SERVQUAL perceived by 180 respondents. The samples using purposive sampling method. Hypotheses were tested using SEM with the help of computer software AMOS 18. Based on the results of testing the E-SERVQUAL found positive and significant effect on customer satisfaction, E-SERVQUAL positive and significant effect on the trust, E-SERVQUAL positive and significant effect on repeat USAge, customer satisfaction positive and significant effect on trust, customer satisfaction positive and significant effect on repeat USAge, and trust positive and significant effect on repeat USAge
Pengaruh Penggunaan Fly Ash Pada Soil – Cement
Soil cement telah umum digunakan untuk meningkatkan kondisi tanah liat lunak yang mempunyai daya dukung rendah dan penurunan yang besar. Penggunan semen dalam jumlah besar menyebabkan metode ini menjadi mahal. Pada penelitian ini, kadar semen dikurangi dengan penggunaan fly ash dengan kadar tertentu. 8 tangki dengan diameter 46 cm diisi dengan tanah liat lunak setinggi 75 cm, lalu soil cement column dibuat pada tanah liat lunak pada setiap tangki. Pencampuran soil cement dan variasi kadar fly ash menggunakan dua cara yaitu dengan bubuk semen + fly ash (BS) dan semen cair + fly ash (SC). Untuk kadar fly ash yang diteliti adalah 10%, 15%, 20%, dan 25% dari berat semen. Sampel dari tiap campuran soil cement dilakukan pengetesan UC test dan CBR test. Hasil UC test pada sampel 28 hari, untuk campuran BS dengan kadar 10%, 15%, 20%, dan 25% mencapai kekuatan sebesar 20.8, 14.3, 22.8, dan 17.3 (kg/cm2), sedangkan campuran SC mencapai kekuatan sebesar 15.9, 12.71, 10.83, dan 17.3 (kg/cm2). Selanjutnya nilai CBR dengan kadar fly ash 10%, 15%, 20%, dan 25% menghasilkan nilai sebesar 72.5%, 55.4%, 60.7%, dan 44.3% untuk BS, dan 52.3%, 53.9%, 60.7%, dan 42.7% untuk SC
CLOVER - A new instrument for measuring the B-mode polarization of the CMB
We describe the design and expected performance of Clover, a new instrument
designed to measure the B-mode polarization of the cosmic microwave background.
The proposed instrument will comprise three independent telescopes operating at
90, 150 and 220 GHz and is planned to be sited at Dome C, Antarctica. Each
telescope will feed a focal plane array of 128 background-limited detectors and
will measure polarized signals over angular multipoles 20 < l < 1000. The
unique design of the telescope and careful control of systematics should enable
the B-mode signature of gravitational waves to be measured to a
lensing-confusion-limited tensor-to-scalar ratio r~0.005.Comment: 4 pages, 5 figures. To appear in the proceedings of the XXXVIXth
Rencontres de Moriond "Exploring the Universe
SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope
We describe the design of a new polarization sensitive receiver, SPT-3G, for
the 10-meter South Pole Telescope (SPT). The SPT-3G receiver will deliver a
factor of ~20 improvement in mapping speed over the current receiver, SPTpol.
The sensitivity of the SPT-3G receiver will enable the advance from statistical
detection of B-mode polarization anisotropy power to high signal-to-noise
measurements of the individual modes, i.e., maps. This will lead to precise
(~0.06 eV) constraints on the sum of neutrino masses with the potential to
directly address the neutrino mass hierarchy. It will allow a separation of the
lensing and inflationary B-mode power spectra, improving constraints on the
amplitude and shape of the primordial signal, either through SPT-3G data alone
or in combination with BICEP-2/KECK, which is observing the same area of sky.
The measurement of small-scale temperature anisotropy will provide new
constraints on the epoch of reionization. Additional science from the SPT-3G
survey will be significantly enhanced by the synergy with the ongoing optical
Dark Energy Survey (DES), including: a 1% constraint on the bias of optical
tracers of large-scale structure, a measurement of the differential Doppler
signal from pairs of galaxy clusters that will test General Relativity on ~200
Mpc scales, and improved cosmological constraints from the abundance of
clusters of galaxies.Comment: 21 pages, 9 figures. To be published in Proceedings of SPIE Volume
9153. Presented at SPIE Astronomical Telescopes + Instrumentation 2014,
conference 915
Implications of a High Angular Resolution Image of the Sunyaev-Zel'dovich Effect in RXJ1347-1145
The most X-ray luminous cluster known, RXJ1347-1145 (z=0.45), has been the
object of extensive study across the electromagnetic spectrum. We have imaged
the Sunyaev-Zel'dovich Effect (SZE) at 90 GHz (3.3 mm) in RXJ1347-1145 at 10"
resolution with the 64-pixel MUSTANG bolometer array on the Green Bank
Telescope (GBT), confirming a previously reported strong, localized enhancement
of the SZE 20" to the South-East of the center of X-ray emission. This
enhancement of the SZE has been interpreted as shock-heated (> 20 keV) gas
caused by an ongoing major (low mass-ratio) merger event. Our data support this
interpretation. We also detect a pronounced asymmetry in the projected cluster
pressure profile, with the pressure just east of the cluster core ~1.6 times
higher than just to the west. This is the highest resolution image of the SZE
made to date.Comment: 9 pages, 7 figures; accepted for publication in The Astrophysical
Journa
The AzTEC mm-Wavelength Camera
AzTEC is a mm-wavelength bolometric camera utilizing 144 silicon nitride
micromesh detectors. Herein we describe the AzTEC instrument architecture and
its use as an astronomical instrument. We report on several performance metrics
measured during a three month observing campaign at the James Clerk Maxwell
Telescope, and conclude with our plans for AzTEC as a facility instrument on
the Large Millimeter Telescope.Comment: 13 pages, 15 figures, accepted for publication in Monthly Notice
90GHz and 150GHz observations of the Orion M42 region. A sub-millimeter to radio analysis
We have used the new 90GHz MUSTANG camera on the Robert C. Byrd Green Bank
Telescope (GBT) to map the bright Huygens region of the star-forming region M42
with a resolution of 9" and a sensitivity of 2.8mJy/beam. 90GHz is an
interesting transition frequency, as MUSTANG detects both the free-free
emission characteristic of the HII region created by the Trapezium stars,
normally seen at lower frequencies, and thermal dust emission from the
background OMC1 molecular cloud, normally mapped at higher frequencies. We also
present similar data from the 150GHz GISMO camera taken on the IRAM telescope.
This map has 15" resolution. By combining the MUSTANG data with 1.4, 8, and
21GHz radio data from the VLA and GBT, we derive a new estimate of the emission
measure (EM) averaged electron temperature of Te = 11376K by an original method
relating free-free emission intensities at optically thin and optically thick
frequencies. Combining ISO-LWS data with our data, we derive a new estimate of
the dust temperature and spectral emissivity index within the 80" ISO-LWS beam
toward OrionKL/BN, Td = 42K and Beta=1.3. We show that both Td and Beta
decrease when going from the HII region and excited OMC1 interface to the
denser UV shielded part of OMC1 (OrionKL/BN, Orion S). With a model consisting
of only free-free and thermal dust emission we are able to fit data taken at
frequencies from 1.5GHz to 854GHz.Comment: 18 pages, 8 figures, submitted to the Astrophysical Journa
Characterization of the Millimeter-Wave Polarization of Centaurus A with QUaD
Centaurus (Cen) A represents one of the best candidates for an isolated,
compact, highly polarized source that is bright at typical cosmic microwave
background (CMB) experiment frequencies. We present measurements of the 4
degree by 2 degree region centered on Cen A with QUaD, a CMB polarimeter whose
absolute polarization angle is known to 0.5 degrees. Simulations are performed
to assess the effect of misestimation of the instrumental parameters on the
final measurement and systematic errors due to the field's background structure
and temporal variability from Cen A's nuclear region are determined. The total
(Q, U) of the inner lobe region is (1.00 +/- 0.07 (stat.) +/- 0.04 (sys.),
-1.72 +/- 0.06 +/- 0.05) Jy at 100 GHz and (0.80 +/- 0.06 +/- 0.06, -1.40 +/-
0.07 +/- 0.08) Jy at 150 GHz, leading to polarization angles and total errors
of -30.0 +/- 1.1 degrees and -29.1 +/- 1.7 degrees. These measurements will
allow the use of Cen A as a polarized calibration source for future millimeter
experiments.Comment: 9 pages, 8 figures, v2 matches version published in Ap
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