785 research outputs found
Pengaruh Pemberian Motivasi dan Komitmen Organisasi terhadap Kinerja Karyawan (Studi pada Hotel Dyan Graha Pekanbaru)
This study aims to analyze the provision of motivation and organizational commitment and its effect on employee performance at Hotel Dyan Graha Pekanbaru. Provision of motivation as a variable (X1), Organizational Commitment as Variable (X2), and employee performance as a variable (Y). The method in this research is descriptive and quantitative by using program of SPSS 21, where sample used is 56 employees conducted by census and technique of collecting data through questioner. The results of analysis using the validity test, test reliability, test determination, simple linear regression test, multiple linear regression test, t test and F test. So it can be concluded that the provision of motivation significantly influence employee performance at Hotel Dyan Graha Pekanbaru, Employee performance at Hotel Dyan Graha Pekanbaru, and giving motivation and organizational commitment have a significant effect on employee performance at Hotel Dyan Graha Pekanbaru
Penerapan Metode Drill and Practice Dilengkapi Modul Untuk Meningkatkan Keaktifan Dan Prestasi Belajar Pada Materi Pokok Hidrolisis Garam Kelas XI IPA 5 SMA Negeri 7 Surakarta Tahun Pelajaran 2012 / 2013
Penelitian ini bertujuan untuk meningkatkan keaktifan dan prestasi belajar siswa melalui metode drill and practice dilengkapi dengan modul pada materi pokok hidrolisis garam siswa kelas XI IPA 5 semester genap SMA N 7 surakarta, tahun pelajaran 2012/2013. Metode penelitian yang digunakan yaitu analisis deskripstif kualitatif dengan jenis penelitian tindakan kelas. Subjek penelitian yaitu siswa kelas XI IPA 5 dengan jumlah 25 siswa. Data penelitian berupa data kualitatif dan kuantitatif dengan teknik pengumpulan data menggunakan tes kognitif (aspek kognitif), observasi (keaktifan dan psikomotorik), dan angket (afektif dan keaktifan). Hasil penelitian menunjukkan bahwa penerapan metode drillandpractice dilengkapi modul. Hal ini dilihat dari hasil penelitian antara siklus I dengan siklus II. Dari segi keaktifannya, metode ini mampu meningkatkan keaktifan siswa, pada siklus I 52.80% meningkat menjadi 64.83% pada siklus II. Prestasi belajar siswa mencakup aspek kognitif naik dari 40 % saat pra siklus menjadi 54 % saat siklus I dan 80 % siklus II. Untuk aspek afektif juga mengalami kenaikan yaitu dari 74.65% pada siklus I menjadi 80,3% pada siklus II. Berdasarkan hasil penelitian dapat disimpulkan bahwa metode pembelajaran drill and practice dilengkapi modul dapat meningkatkan keaktifan dan prestasi belajar siswa pada materi pokok hidrolisis garam kelas XI IPA 5 SMA Negeri 7 Surakarta
Analisa Karakteristik Biodiesel Nyamplung
Seno Darmanto, Windu Sediono, Sarwoko, Triyatno, in this paper explain that making of callophylum inophylum biodiesel fuel is done alkaly transesterification methode. Alkaly transesterification methode use methanol and basa (NaOH) of catalist. Procedur and setting of research that is consisted in material selection, treatment and setting of composition of methanol and catalist, operational temperature, reaction time, speed and mixer technical will effect quality and conversion level of callophylum inophylum biodiesel. And based data analyzer show that conversion of callophylum inophylum biodiesel can reach 90%. Properties of callophylum inophylum biodiesel show viscosity and flash point of callophylum inophylum biodiesel is ligthly higher than diesel fuel. And caloric value of callophylum inophylum biodiesel is slightly lower than diesel fuel
Sediment and Suspended Particulate Matter of Jakarta Bay, Indonesia
Jakarta Bay is a semi enclosed bay located in the northern coast of Jakarta Metropolitan City. Hydrologically 13 rivers flowing in the Jakarta region and there are three big rivers with significant discharge to the Jakarta Bay namely Citarum, Ciliwung, and Cisadane Rivers. Jakarta, as Indonesian capital city with population of 8.725.630 inhabitants, and another 15 million people live in the surrounded suburban of Jakarta, creates a significant anthropogenic impact to the environmental system. Limited infrastructures, such as no sewerage system and lack of industrial waste management, cause the rivers in this region have over their carrying capacity.Seventeen sampling stations were determined in the Jakarta Bay, consisting of 5 stations at the river mouths (estuaries) and other 12 stations in the bay spreading from the coastal to offshore areas. Water and sediment samples were taken during 2 monsoonal or seasonal variations, August 2006 for dry season and February 2007 for rainy season respectively. Additionally, samples were also taken in May 2007.Sediment distribution in the estuary consists mostly of black clay. The sediments clays were bad smell. In the coastal region and in the dry season, the sediments consists of black clay and at one sampling site (station S3) the sediment was bad smell. However, all sampling sites became bad smell in the rainy season. In the inner bay area, sediments were greyish green sandy clay with some shell fragments. In the outer bay, the sediments were dominated by greyish green clayey sand with some shell fragments. The black clay with bad smell is indicative of anthropogenic influence from Jakarta River Basin. C/N ratio of the sediments in the dry season ranged from 1 to about 4.2 where in the estuaries (at stations M1, M2 and M4) the ratio were higher compared to the inner and outer bays. The C/N ratio of suspended particulate matter ranged from the lowest ratio of 0.7 to the highest ratio of 17.7 at the bottom layer and lesser ranged of 0.7 to 9.8 at surface layer. POC concentrations ranged between 50-650 µM and 50-900 µM, in February and May, respectively. High concentrations of POC exists along the coastline or estuaries then decreasing toward the sea. POC is distributed widely in February than that in May due to higher discharge from the rivers. The average TOC concentrations in February is lower than that in May, but the TOC load in February was much higher than that in May due to the big differences of river discharge and because the samples were taken a week after the big flood in Jakarta area (February 4th - 6th, 2007). Total organic carbon fluxes from the river to the bay in February and May 2007 were 107.6 T /day C and 42.7 T /day C, respectively
Bethe approximation for self-interacting lattice trees
In this paper we develop a Bethe approximation, based on the cluster
variation method, which is apt to study lattice models of branched polymers. We
show that the method is extremely accurate in cases where exact results are
known as, for instance, in the enumeration of spanning trees. Moreover, the
expressions we obtain for the asymptotic number of spanning trees and lattice
trees on a graph coincide with analogous expressions derived through different
approaches. We study the phase diagram of lattice trees with nearest-neighbour
attraction and branching energies. We find a collapse transition at a
tricritical theta point, which separates an expanded phase from a compact
phase. We compare our results for the theta transition in two and three
dimensions with available numerical estimates.Comment: 10 pages, 3 figures, to be published in Europhysics Letter
Endoscopic Surgery for Facial Lipoma Excision
Minimally invasive endoscopic surgery in the neck, first reported by Gagner in 1996, has been
adopted by a number of other surgical specialties. We have developed new techniques for
performing endoscopic enucleation lipoma. Using our new techniques, various complications,
such as injury to nerves and vessels, are prevented. The technique generates cosmetically
satisfying results. Expansion of minimally invasive surgery into the facial area will be
enhanced by the future development of instruments for this area, and decrease operating time
and hospital stay
Steric constraints in model proteins
A simple lattice model for proteins that allows for distinct sizes of the
amino acids is presented. The model is found to lead to a significant number of
conformations that are the unique ground state of one or more sequences or
encodable. Furthermore, several of the encodable structures are highly
designable and are the non-degenerate ground state of several sequences. Even
though the native state conformations are typically compact, not all compact
conformations are encodable. The incorporation of the hydrophobic and polar
nature of amino acids further enhances the attractive features of the model.Comment: RevTex, 5 pages, 3 postscript figure
Collapsing lattice animals and lattice trees in two dimensions
We present high statistics simulations of weighted lattice bond animals and
lattice trees on the square lattice, with fugacities for each non-bonded
contact and for each bond between two neighbouring monomers. The simulations
are performed using a newly developed sequential sampling method with
resampling, very similar to the pruned-enriched Rosenbluth method (PERM) used
for linear chain polymers. We determine with high precision the line of second
order transitions from an extended to a collapsed phase in the resulting
2-dimensional phase diagram. This line includes critical bond percolation as a
multicritical point, and we verify that this point divides the line into two
different universality classes. One of them corresponds to the collapse driven
by contacts and includes the collapse of (weakly embeddable) trees, but the
other is {\it not yet} bond driven and does not contain the Derrida-Herrmann
model as special point. Instead it ends at a multicritical point where a
transition line between two collapsed phases (one bond-driven and the other
contact-driven) sparks off. The Derrida-Herrmann model is representative for
the bond driven collapse, which then forms the fourth universality class on the
transition line (collapsing trees, critical percolation, intermediate regime,
and Derrida-Herrmann). We obtain very precise estimates for all critical
exponents for collapsing trees. It is already harder to estimate the critical
exponents for the intermediate regime. Finally, it is very difficult to obtain
with our method good estimates of the critical parameters of the
Derrida-Herrmann universality class. As regards the bond-driven to
contact-driven transition in the collapsed phase, we have some evidence for its
existence and rough location, but no precise estimates of critical exponents.Comment: 11 pages, 16 figures, 1 tabl
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