95 research outputs found
Pengaruh Kualitas Layanan dan Kepuasan Emosional terhadap Kualitas Hubungan dan Loyalitas Pelanggan Kfc di Surabaya
Some factors are deemed to be important for research in relation to customer loyalty. These factors are service quality, emotional satisfaction, relationship quality. The purpose of this study is to analyze the influence of service quality, emotional satisfaction, relationship quality on customer loyalty Kentucky Fried Chicken (KFC) in Surabaya. The sample taken consists of KFC Jalan Ahmad Yani Surabaya customers. Analysis tool used is the Structural Equation Modeling (SEM). The results showed that there is a significant and positive effect of service quality of emotional satisfaction, emotional satisfaction a positive significant effect on customer loyalty. Beside, emotional satisfaction has positive and significant effect on the quality of relationships
Strategi Pertahanan Negara dalam Mengamankan Wilayah Perbatasan di Indonesia (Studi Kasus Perbatasan Indonesia-RDTL)
This article describes the condition of the Indonesia-RDTL (Timor Leste) border area, starting from the history of attempts to secede from the Indonesian state, to the threats faced by Indonesia, especially the border communities in facing the worst possibilities that could occur between the two countries. Threats faced by Indonesia include military threats and non-military threats. In general, Indonesia's military strength is far superior in terms of personnel and defense equipment, while in dealing with non-military threats, the threats faced include refugees to smuggling, both narcotics smuggling and illegal firearms smuggling. The defense strategy to the policies implemented by the government are different in dealing with each threat. Policies in the form of adding security posts to improving the quality of personnel are government policy steps in dealing with military threats, while in dealing with non-military threats, policy steps taken by the government include repatriation to resettlement and improving people's living standards. In conclusion, the defense strategy and policies adopted by the government in securing the Indonesia-East Timor border area are a long-term and sustainable strategy to provide a sense of security for all Indonesian people, especially the people in the border areas
Karakteristik Massa Air Lapisan Tercampur Dan Lapisan Termoklin Di Selat Lombok Pada Bulan November 2015
Penelitian ini bertujuan untuk mengetahui karakteristik massa air di lapisan tercampur dan lapisan termoklin. Karakteristik yang dimaksud adalah suhu, salinitas, densitas, stabilitas statik dan tipe massa air.Penelitian ini menggunakan data suhu, salinitas, densitas dan kedalaman yang diakuisisi dari instrumen CTD. Data suhu dan salinitas digunakan untuk menentukan tipe massa air dengan diagram T-S (Temperatur-Salinitas) yang mengacu pada klasifikasi Wyrtki, sedangkan data densitas dan kedalaman digunakan untuk menentukan stabilitas statik massa air. Stratifikasi massa air ditentukan dengan dengan kriteria ambang lapisan piknoklin >0,125 kg/m3 dari densitas permukaan dan lapisan termoklin >0,5oC dari suhu permukaan. Hasil penelitian menunjukkan adanya stratifikasi lapisan massa air bervariasi secara vertikal dengan kedalaman lapisan tercampur bervariasi dari 0-43 m berdasarkan temperatur dan 0-45 m berdasarkan densitas, lapisan termoklin berada diantara kedalaman 3-412 m. Stabilitas massa air menunjukkan nilai bervariasi dari -15 sampai 30 siklus/jam, nilai Frekuensi Brunt-Vӓїsӓlӓ yang tinggi ditemukan di lapisan termoklin. Hasil diagram T-S menunjukkan adanya empat massa air yang teridentifikasi yaitu massa air North Pacific Intermediate Water (NPIW) yang dicirikan salinitas minimum, massa air North Pacific Subtropical Water (NPSW) dengan karakter salinitas maksimum, massa air North Indian Subtropical Water (NISW) dicirikan salinitas maksimum dan massa air Australasian Mediterranean Water (AAMW) yang dicirikan oleh salinitas maksimum
Kajian Penggunaan Standar Mobile Wimax Untuk Sistem Komunikasi Taktis Militer
Sistem komunikasi taktis merupakan sistem komunikasi yang diterapkan di area yang luas dengan kriteria tertentu diantaranya mampu menjadi Super Network akibat banyaknya unit yang bergabung dalam sebuah operasi militer, menuntut transfer data yang relatif cepat, diperkuat dengan keamanan transmisi, serta memungkinkan diterapkan pada infrastruktur yang tidak tetap. Pada penelitian ini dilakukan pengkajian mengenai pemilihan teknologi Mobile Wimax sebagai teknologi komunikasi alternatif yang bisa diterapkan di daerah taktis. Pengkajian yang dilakukan menggunakan dua metode, yaitu dengan simulasi untuk menguji kemampuan security pada Mobile Wimax terhadap gangguan jamming dan studi pustaka mengenai kriteria yang harus dipenuhi dalam sistem komunikasi taktis seperti kemampuan Mobile Wimax menjadi Super Network, perbaikan rute apabila suatu saat terjadi pemblokan rute pada proses pentransmisian informasi, dan mekanisme yang membolehkan apabila sebuah unit baru ingin bergabung dalam sebuah jaringan mesh yang sudah aktif sebelumnya. Dari hasil simulasi yang telah dilakukan dapat diketahui bahwa sistem Orthogonal Frequency Division Muliplexing (OFDM) yang ada pada Mobile Wimax harus dimodifikasi dengan memberikan convolutional coding dan interleaver agar tahan terhadap gangguan jamming. Sedangkan pada hasil dari studi pustaka menunjukkan bahwa teknologi Mobile Wimax mampu memenuhi kriteria-kriteria yang telah ditetapkan
Ocean color as a proxy to predict sea surface salinity in the Banda Sea
Salinity is an important ocean parameter that greatly influences physical, chemical, and biological ocean properties and processes. Salinity combines with sea temperature and chlorophyll-a (Chl-a) that mostly sourced from remote sensing-based measurements can reveal ocean quality and supports fisheries. However, the satellite-derived Sea Surface Salinity (SSS) dataset (∼ 9 years) is not as temporally adequate as SST and Chl-a datasets (∼3 decades) and thus, preventing a comprehensively spatio-temporal analysis of this water quality aspect. Since (SSS) can be approximated using satellite-derived ocean color products having the similar temporal length of datasets to the available SST and Chl-a datasets, predicted SSS can be produced from these ocean color products to fill the gap of the existing SSS dataset. This study aims to estimate the SSS from ocean color products of Aqua-MODIS satellite with a spatial and temporal resolution of 4 km and 8-daily by developing an empirical model. The ocean color data used were remote sensing reflectance (Rrs) of blue, green and red wavelengths (412, 433, 469, 488, 531, 547, 555, 645, 667 and 678 nm). The absorption coefficients due to detritus material non-algae, Gelbstof and CDOM (ADG) at 443 nm and the absorption coefficient due to phytoplankton (APH) at 443 nm data were also used. The Banda Sea was chosen due to its large-scale upwelling system (∼300 km × 300 km) that providing an important ocean process related to fishery and the availability of in-situ salinity measurements (i.e. CTD casts from series of Research Vessel (R/V) Baruna Jaya III, VII and VIII cruises and Argo floats), which a part of these datasets will be used to validate predicted SSS. Results showed that of all ocean color parameters tested, ADG at 443 nm was strongly correlated with in-situ SSS through the polynomial order 5 regression equation with a high R2 of 0.94 and a low RMES value of 0.101 PSU. Although this empirical model has high accuracy, but based on RMSE analysis results from various locations within and outside the Banda Sea that influenced by the Pacific and the Indian ocean water masses indicates that this model actually good to predict in-situ SSS only for a narrow range SSS of 33.4-34.5 PSU. Nevertheless, this model has a limitation, it is still can be used for predicting and mapping the SSS for Banda Sea as well as for most of the Indonesian waters. The long-term meteorological SSS map (2003-2017) derived by this model together with the SST and Chl-a maps can show clearly the upwelling phenomena of the Banda Sea, which occurred during the southeast monsoon (June-July-August, JJA). This study proves that ocean color data from Aqua-MODIS satellite can be applied to estimate and to map the SSS for most of the Indonesian waters, but validations for this model is still neede
Investigation simulation based on bio-energy local area photosensitizer in increasing dye-sensitized solar cells (DSSC) performance
The photosensitizer is an important part of Dye-Sensitized Solar Cells (DSSC). Photosensitizers function like photosynthesis by absorbing sunlight and turning it into energy. Photosensitizers also contribute to the efficiency of improving DSSC performance. This research is a continuation of previous research to find a candidate for natural and environmentally friendly photosensitizer (bio-energy) based local area in Indonesia. The photosensitizer used in this simulation is Tagetes erecta, Nyctanthes arbor-tritis, Brassica rapa Sub. Sp pekinensis, Delonix regia, Lawsonia inermis, Callistemon citrinus, and Daucus Carota. The purpose of this simulation is finding several candidates for bio-energy local area photosensitizer that produce high efficiency by displaying J-V curves and P-V curves. The highest efficiency was produced by photosensitizer Tagetes erecta at 1.5% [Voc 0.6385 Volt, 0.00383 A / cm2 Jsc, FF 0.605 and Pmax 0.00148 Watt], while the lowest efficiency was produced by photosensitizer Callistemon citrinus at 1.1% [Voc 0.6162 Volt, Jsc 0.0032 A / cm2, FF 0.557 and Pmax 0,0011 Watts]. These simulation results perform that one of reason give influence at DSSC performance is the absorption coefficient value in each bio-energy local area photosensitizer. The absorption coefficient also determines how much efficiency is produced and how much the photosensitizer's ability to absorb sunlight
Modelling Herschel observations of hot molecular gas emission from embedded low-mass protostars
Aims. Young stars interact vigorously with their surroundings, as evident
from the highly rotationally excited CO (up to Eup=4000 K) and H2O emission (up
to 600 K) detected by the Herschel Space Observatory in embedded low-mass
protostars. Our aim is to construct a model that reproduces the observations
quantitatively, to investigate the origin of the emission, and to use the lines
as probes of the various heating mechanisms.
Methods. The model consists of a spherical envelope with a bipolar outflow
cavity. Three heating mechanisms are considered: passive heating by the
protostellar luminosity, UV irradiation of the outflow cavity walls, and C-type
shocks along the cavity walls. Line fluxes are calculated for CO and H2O and
compared to Herschel data and complementary ground-based data for the
protostars NGC1333 IRAS2A, HH 46 and DK Cha. The three sources are selected to
span a range of evolutionary phases and physical characteristics.
Results. The passively heated gas in the envelope accounts for 3-10% of the
CO luminosity summed over all rotational lines up to J=40-39; it is best probed
by low-J CO isotopologue lines such as C18O 2-1 and 3-2. The UV-heated gas and
the C-type shocks, probed by 12CO 10-9 and higher-J lines, contribute 20-80%
each. The model fits show a tentative evolutionary trend: the CO emission is
dominated by shocks in the youngest source and by UV-heated gas in the oldest
one. This trend is mainly driven by the lower envelope density in more evolved
sources. The total H2O line luminosity in all cases is dominated by shocks
(>99%). The exact percentages for both species are uncertain by at least a
factor of 2 due to uncertainties in the gas temperature as function of the
incident UV flux. However, on a qualitative level, both UV-heated gas and
C-type shocks are needed to reproduce the emission in far-infrared rotational
lines of CO and H2O.Comment: 15 pages (+4 pages appendix), 20 figures, accepted by A&
A Triple Protostar System Formed via Fragmentation of a Gravitationally Unstable Disk
Binary and multiple star systems are a frequent outcome of the star formation
process, and as a result, almost half of all sun-like stars have at least one
companion star. Theoretical studies indicate that there are two main pathways
that can operate concurrently to form binary/multiple star systems: large scale
fragmentation of turbulent gas cores and filaments or smaller scale
fragmentation of a massive protostellar disk due to gravitational instability.
Observational evidence for turbulent fragmentation on scales of 1000~AU has
recently emerged. Previous evidence for disk fragmentation was limited to
inferences based on the separations of more-evolved pre-main sequence and
protostellar multiple systems. The triple protostar system L1448 IRS3B is an
ideal candidate to search for evidence of disk fragmentation. L1448 IRS3B is in
an early phase of the star formation process, likely less than 150,000 years in
age, and all protostars in the system are separated by 200~AU. Here we
report observations of dust and molecular gas emission that reveal a disk with
spiral structure surrounding the three protostars. Two protostars near the
center of the disk are separated by 61 AU, and a tertiary protostar is
coincident with a spiral arm in the outer disk at a 183 AU separation. The
inferred mass of the central pair of protostellar objects is 1 M,
while the disk surrounding the three protostars has a total mass of 0.30
M_{\sun}. The tertiary protostar itself has a minimum mass of 0.085
M. We demonstrate that the disk around L1448 IRS3B appears susceptible
to disk fragmentation at radii between 150~AU and 320~AU, overlapping with the
location of the tertiary protostar. This is consistent with models for a
protostellar disk that has recently undergone gravitational instability,
spawning one or two companion stars.Comment: Published in Nature on Oct. 27th. 24 pages, 8 figure
The Millennium Run Observatory: First Light
Simulations of galaxy evolution aim to capture our current understanding as
well as to make predictions for testing by future experiments. Simulations and
observations are often compared in an indirect fashion: physical quantities are
estimated from the data and compared to models. However, many applications can
benefit from a more direct approach, where the observing process is also
simulated and the models are seen fully from the observer's perspective. To
facilitate this, we have developed the Millennium Run Observatory (MRObs), a
theoretical virtual observatory which uses virtual telescopes to `observe'
semi-analytic galaxy formation models based on the suite of Millennium Run dark
matter simulations. The MRObs produces data that can be processed and analyzed
using the standard software packages developed for real observations. At
present, we produce images in forty filters from the rest-frame UV to IR for
two stellar population synthesis models, three different models of IGM
absorption, and two cosmologies (WMAP1/7). Galaxy distributions for a large
number of mock lightcones can be `observed' using models of major ground- and
space-based telescopes. The data include lightcone catalogues linked to
structural properties of galaxies, pre-observation model images, mock telescope
images, and Source Extractor products that can all be traced back to the higher
level dark matter, semi-analytic galaxy, and lightcone catalogues available in
the Millennium database. Here, we describe our methods and announce a first
public release of simulated surveys (e.g., SDSS, CFHT-LS, GOODS, GOODS/ERS,
CANDELS, and HUDF). The MRObs browser, an online tool, further facilitates
exploration of the simulated data. We demonstrate the benefits of a direct
approach through a number of example applications (galaxy number counts in
CANDELS, clusters, morphologies, and dropout selections).Comment: MNRAS, in press. Millennium Run Observatory data products, online
tools, and more available through http://galformod.mpa-garching.mpg.de/mrobs
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