ANALISIS PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN PENGGUNA KARTU GSM DI FAKULTAS EKONOMI UMS

Sebagai provider jasa komunikasi, indosat dan telkomsel tidak hanya dituntut untuk memenuhi pelayanannya terhadap konsumen dengan baik, akan tetapi juga harus mampu bersaing untuk mempertahankan kelansungan hidupnya dengan memberikan kualitas pelayanan yang terbaik. Oleh karena itu, diperlukan suatu konsep berwawasan pelanggan di mana indosat dan telkomsel memusatkan perhatian penuh terhadap kebutuhan dan keinginan konsumen. Penelitian ini bertujuan untuk mengetahui pengaruh kualitas pelayanan terhadap kepuasaan pengguna kartu GSM di Fakultas Ekonomi UMS. Populasi dalam penelitian ini adalah semua pengguna kartu GSM (IM3, Mentari, Simpati) di Fakultas Ekonomi UMS. Pengambilan sampel menggunakan convenience sampling dan jumlah responden yang diperoleh sebanyak 62 responden. Metode pengumpulan data menggunakan kuesioner dan metode analisis data menggunakan analisis regresi berganda, uji t, uji F dan uji asumsi klasik. Berdasarkan hasil analisis data, hasil penelitian ini dapat disimpulkan sebagai berikut: 1) Variabel reliability berpengaruh signifikan terhadap kepuasan pengguna kartu GSM. 2) Variabel responsiveness tidak terdapat pengaruh signifikan terhadap kepuasan pengguna kartu GSM. 3) Variabel assurance berpengaruh signifikan terhadap kepuasan pengguna kartu GSM. 4) Variabel empathy tidak terdapat pengaruh signifikan terhadap kepuasan pengguna kartu GSM. 5) Variabel tangible berpengaruh signifikan terhadap kepuasan pengguna kartu GSM. 6) Hasil uji koefisien regresi menunjukkan bahwa variabel assurance , berpengaruh dominan terhadap kepuasan pengguna kartu GSM

The Initial Mass Function of the Orion Nebula Cluster across the H-burning limit

We present a new census of the Orion Nebula Cluster (ONC) over a large field of view (>30'x30'), significantly increasing the known population of stellar and substellar cluster members with precisely determined properties. We develop and exploit a technique to determine stellar effective temperatures from optical colors, nearly doubling the previously available number of objects with effective temperature determinations in this benchmark cluster. Our technique utilizes colors from deep photometry in the I-band and in two medium-band filters at lambda~753 and 770nm, which accurately measure the depth of a molecular feature present in the spectra of cool stars. From these colors we can derive effective temperatures with a precision corresponding to better than one-half spectral subtype, and importantly this precision is independent of the extinction to the individual stars. Also, because this technique utilizes only photometry redward of 750nm, the results are only mildly sensitive to optical veiling produced by accretion. Completing our census with previously available data, we place some 1750 sources in the Hertzsprung-Russel diagram and assign masses and ages down to 0.02 solar masses. At faint luminosities, we detect a large population of background sources which is easily separated in our photometry from the bona fide cluster members. The resulting initial mass function of the cluster has good completeness well into the substellar mass range, and we find that it declines steeply with decreasing mass. This suggests a deficiency of newly formed brown dwarfs in the cluster compared to the Galactic disk population.Comment: 16 pages, 18 figures. Accepted for publication in The Astrophysical Journa

THE EFFECT OF YACON TUBERS SYRUP ON CALCIUM CONTENT OF FEMORAL BONE IN WHITE RATS (Rattus Norvegicus)

The research objectives were to determine: 1) the effect of yacon tuber syrup supplementation on on rat bone calcium levels 2) the correlation of the total amount of short chain fatty acids (ALRP) to the calcium levels of the femur. The experimental animal used was 36 Rattus norvegicus. Were divided into 3 groups of supplement treatment: 1) aquadest, 2) yacon tubers syrup, 3) commercial FOS. After 48 days of treatment, the femur bone was analyzed for calcium levels by the digestion method. The instruments used were HPLC to test ALRP levels, GC to test FOS levels, and  AAS to test calcium levels. Data analysis was done through the One Way Anova test (α = 0.05), the Post Hoc LSD, and the product moment correlation. The results of the analysis showed 1)  The increase in average calcium levels from the K(-) group to P1 was 1.211 mg/mL and the post hoc statistical test between the K(-) and P1 (p>0.05) groups showed no significant difference between yacon tuber syrup supplementation on calcium levels. mouse bones. 2) Correlation analysis shows the correlation coefficient of r = 0.394 so that there is a low relationship between the total amount of ALRP and calcium levels in the femur bones of experimental animals.   Keyword : yacon, FOS, calsium, absorption  Tujuan penelitian untuk mengetahui: 1) pengaruh suplementasi sirup umbi yakon terhadap kadar kalsium tulang tikus 2) korelasi jumlah total asam lemak rantai pendek (ALRP) terhadap kadar kalsium tulang tikus. Hewan coba yang digunakan adalah 36 ekor Rattus norvegicus, terbagi 3 kelompok perlakuan suplemen: 1) perlakuan air, 2) sirup umbi yakon, 3) FOS komersial. Perlakuan selama 48 hari, tulang femur digunakan sebagai sampel yang dianalisis kadar kalsium dengan metode destruksi. Instrumen  yang digunakan adalah HPLC untuk uji kadar ALRP, GC uji kadar FOS, dan AAS uji kadar kalsium.. Analisis data melalui uji Anova satu jalur (α=0,05), Post Hoc LSD, dan korelasi product moment (α=0,05). Hasil analisis menunjukkan 1) Kenaikan hasil rata-rata kadar kalsium dari kelompok K(-) terhadap P1 sebesar 1,211 mg/mL dan uji statistik post hoc antara kelompok K(-) dan P1 (p>0,05) menunjukkan tidak adanya perbedaan secara signifikan suplementasi sirup umbi yakon terhadap kadar kalsium tulang tikus. 2) Analisis korelasi menunjukkan hasil koefisien korelasi sebesar r = 0,394 sehingga terdapat hubungan yang rendah antara jumlah total ALRP dengan kadar kalsium pada tulang femur hewan coba. Kata kunci: umbi yakon, FOS, kalsium, absorps

A Tuned and Scalable Fast Multipole Method as a Preeminent Algorithm for Exascale Systems

Among the algorithms that are likely to play a major role in future exascale computing, the fast multipole method (FMM) appears as a rising star. Our previous recent work showed scaling of an FMM on GPU clusters, with problem sizes in the order of billions of unknowns. That work led to an extremely parallel FMM, scaling to thousands of GPUs or tens of thousands of CPUs. This paper reports on a a campaign of performance tuning and scalability studies using multi-core CPUs, on the Kraken supercomputer. All kernels in the FMM were parallelized using OpenMP, and a test using 10^7 particles randomly distributed in a cube showed 78% efficiency on 8 threads. Tuning of the particle-to-particle kernel using SIMD instructions resulted in 4x speed-up of the overall algorithm on single-core tests with 10^3 - 10^7 particles. Parallel scalability was studied in both strong and weak scaling. The strong scaling test used 10^8 particles and resulted in 93% parallel efficiency on 2048 processes for the non-SIMD code and 54% for the SIMD-optimized code (which was still 2x faster). The weak scaling test used 10^6 particles per process, and resulted in 72% efficiency on 32,768 processes, with the largest calculation taking about 40 seconds to evaluate more than 32 billion unknowns. This work builds up evidence for our view that FMM is poised to play a leading role in exascale computing, and we end the paper with a discussion of the features that make it a particularly favorable algorithm for the emerging heterogeneous and massively parallel architectural landscape

A multi-color optical survey of the orion nebula cluster. II. The H-R diagram

We present a new analysis of the stellar population of the Orion Nebula Cluster (ONC) based on multi-band optical photometry and spectroscopy.We study the color–color diagrams in BVI, plus a narrowband filter centered at 6200 Å, finding evidence that intrinsic color scales valid for main-sequence dwarfs are incompatible with the ONC in the M spectral-type range, while a better agreement is found employing intrinsic colors derived from synthetic photometry, constraining the surface gravity value as predicted by a pre-main-sequence isochrone.We refine these model colors even further, empirically, by comparison with a selected sample of ONC stars with no accretion and no extinction. We consider the stars with known spectral types from the literature, and extend this sample with the addition of 65 newly classified stars from slit spectroscopy and 182 M-type from narrowband photometry; in this way, we isolate a sample of about 1000 stars with known spectral type. We introduce a new method to self-consistently derive the stellar reddening and the optical excess due to accretion from the location of each star in the BVI color–color diagram. This enables us to accurately determine the extinction of the ONC members, together with an estimate of their accretion luminosities. We adopt a lower distance for the Orion Nebula than previously assumed, based on recent parallax measurements. With a careful choice of also the spectral-type–temperature transformation, we produce the new Hertzsprung–Russell diagram of the ONC population, more populated than previous works. With respect to previous works, we find higher luminosity for late-type stars and a slightly lower luminosity for early types. We determine the age distribution of the population, peaking from ~2 to ~3 Myr depending on the model. We study the distribution of the members in the mass–age plane and find that taking into account selection effects due to incompleteness, removes an apparent correlation between mass and age.We derive the initial mass function for low- and intermediate mass members of the ONC, which turns out to be model dependent and shows a turnover at M ≲ 0.2 M_⊙

HST measures of Mass Accretion Rates in the Orion Nebula Cluster

The present observational understanding of the evolution of the mass accretion rates (Macc) in pre-main sequence stars is limited by the lack of accurate measurements of Macc over homogeneous and large statistical samples of young stars. Such observational effort is needed to properly constrain the theory of star formation and disk evolution. Based on HST/WFPC2 observations, we present a study of Macc for a sample of \sim 700 sources in the Orion Nebula Cluster, ranging from the Hydrogen-burning limit to M\ast \sim 2M\odot. We derive Macc from both the U-band excess and the H{\alpha} luminosity (LH{\alpha}), after determining empirically both the shape of the typical accretion spectrum across the Balmer jump and the relation between the accretion luminosity (Lacc) and LH{\alpha}, that is Lacc/L\odot = (1.31\pm0.03)\cdotLH{\alpha}/L\odot + (2.63\pm 0.13). Given our large statistical sample, we are able to accurately investigate relations between Macc and the parameters of the central star such as mass and age. We clearly find Macc to increase with stellar mass, and decrease over evolutionary time, but we also find strong evidence that the decay of Macc with stellar age occurs over longer timescales for more massive PMS stars. Our best fit relation between these parameters is given by: log(Macc/M\odot\cdotyr)=(-5.12 \pm 0.86) -(0.46 \pm 0.13) \cdot log(t/yr) -(5.75 \pm 1.47)\cdot log(M\ast/M\odot) + (1.17 \pm 0.23)\cdot log(t/yr) \cdot log(M\ast/M\odot). These results also suggest that the similarity solution model could be revised for sources with M\ast > 0.5M\odot. Finally, we do not find a clear trend indicating environmental effects on the accretion properties of the sources.Comment: 17 pages, 15 figures, accepted for publication in Ap

Structure and Power in Multilateral Negotiations: An Application to French Water Policy

Stakeholder negotiation is an increasingly important policymaking tool. However, relatively little is understood about the relationship between the structure of the negotiating process and the effectiveness with which stakeholders can pursue their individual interests. We apply the Rausser- Simon multilateral bargaining model to a specific negotiation process involving water storage capacity and use in the upper Adour Basin in southwestern France. We focus on a coalition of three stakeholder groups with aligned but distinct interests. In addition to the standard indices of bargaining powerԴhe distribution of political weights (ܡccessݩ and players٠utilities if an agreement is not reached, our analysis identifies other less obvious sources of power. First, a coalition member may benefit when his access is reduced if the redistribution increases the access of another coalition member who has a more favorable ܳtrategic location.ݠSecond, the interests of the coalition as a whole will usually, but not always, be advanced if its members cede access to a pokesmanݠrepresenting their common interests. However, some members may be adversely affected. Third, restricting the extent to which coalition members can make proposals that further their own individual interests at the expense of other coalition members will usually, but not always, harm the coalition as a whole.water, bargaining, negotiations, Environmental Economics and Policy, Institutional and Behavioral Economics,

Structure and bargaining power in multilateral negotiations : Application to water management policies in France

Environmental policies are characterized by a growing emphasis on participation, devolution and negotiated decision making. Increasingly, centralized top down decision making systems are being replaced by new forms of local governance. In their strongest versions, these involve delegation of formal authority to local stakeholders who are expected to decide collectively upon the management rules of local common-pool resources. Devolution is particularly important in relation to the allocation and management of scarce water resources. Indeed the French water law of 1992 institutionalised the notion of [...].

Smart home technologies in Europe: a critical review of concepts, benefits, risks and policies

Smart home technologies refer to devices that provide some degree of digitally connected, automated, or enhanced services to building occupants. Smart homes have become central in recent technology and policy discussions about energy efficiency, climate change, and the sustainability of buildings. Nevertheless, do they truly promote sustainability goals? In addition, what sorts of benefits, risks, and policies do they entail? Based on an extensive original dataset involving expert interviews, site visits to retailers, and a comprehensive review of the literature, this study critically examines the promise and peril of smart home technologies. Drawing on original data collected in the United Kingdom, which has access to European markets, the study first examines definitions of smart homes before offering a new classification involving 13 categories of smart technology covering 267 specific options commercially available from 113 companies. It situates these different technology classes alongside six degrees or levels of smartness, from the basic or traditional home to the fully automated and sentient home. It then elaborates on the 13 distinct benefits smart homes offer alongside 17 risks and barriers, before introducing seven policy recommendations from the material. It lastly suggests three areas of future research on the demographics and practices of actual smart home adopters, rethinking the duality of “control,” and looking beyond “homes” towards socio-technical systems, practices, and justice