186,917 research outputs found
The Moment Guided Monte Carlo Method
No full textIn this work we propose a new approach for the numerical
simulation of kinetic equations through Monte Carlo schemes. We
introduce a new technique which permits to reduce the variance of
particles methods through a matching with a set of suitable
macroscopic hydrodynamics equations. In order to preserve correct solutions for all regimes even with the macroscopic model, a non equilibrium term, which couple micro and macro models, is added to the set of fluid equations. The basic idea, on which the method relies, consists in guiding through hydrodynamic equations the particles positions and velocities so that the parallel solution of the fluid and the kinetic models furnishes the same macroscopic quantities
Hubungan antara Tuntutan Tugas dengan Stres Kerja pada Divisi Marketing PT. Dimarco Mitra Utama
No full textPenelitian ini bertujuan untuk mengetahui hubungan tuntutan tugas dan stres kerja pada divisi marketing PT. Dimarco Mitra Utama. Dengan asumsi bahwa semakin tinggi tuntutan tugas maka semakin tinggi stres kerja yang dialami. Begitu pula sebaliknya semakin rendah tuntutan tugas maka semakin rendah stres kerja yang dialami divisi marketing PT. Dimarco Mitra Utama. Subjek penelitian adalah karyawan divisi marketing PT. Dimarco Mitra Utama yang berjumlah 30 orang. Teknik pengambilan sampel menggunakan Total Sampling. Penelitian ini disusun berdasarkan skala likert dengan menggunakan skala tuntutan tugas menurut Kartono, terdiri dari kondisi kerja, tingkat kesulitan, persyaratan kerja, struktur dan iklim organisasi. Selain itu penelitian ini juga menggunakan skala stres kerja menurut Solomon yang terdiri dari 4 aspek yaitu gejala gangguan emosional, gejala gangguan fungsi berpikir, gejala gangguan aktivitas fisiologis dan gejala gangguan sosial. Berdasarkan analisis data, maka diperoleh hasil sebagai berikut: 1) Terdapat hubungan positif yang signifikan antara tuntutan tugas dengan stres kerja, dimana rxy = 0,633 : p = 0.000<0,050. Berdasarkan hasil penelitian ini, maka hipotesis yang diajukan dinyatakan diterima. 2) Ditemukan bahwa tuntutan tugas tergolong sedang, sebab nilai rata-rata empirik 118,46 lebih besar dari nilai rata-rata hipotetik 95,00 dan stres kerja juga tergolong sedang sebab nilai rata-rata empirik 173,30 lebih besar dari nilai rata-rata hipotetiknya 147,5. 3) Tuntutan tugas memberikan andil sebesar 40,1% terhadap stres kerja, dan diketahui terdapat 59,9% lagi faktor lain yang mempengaruhi stres kerja namun tidak terlihat dalam penelitian ini antara lain faktor individu, faktor lingkungan pekerjaan, pandangan individu terhadap pekerjaan dan lain-lain
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The use of motivational interviewing techniques to enhance the efficacy of guided self-help behavioral weight loss treatment
No full textThis study assessed whether motivational interviewing (MI), applied as part of a standard guided self-help (GSH) behavioral weight loss treatment, reduced attrition rate and improved participant weight loss and other eating-related and general psychological measures. The study also included assessments based on two theories of motivated behavior, to assess whether these measures predicted treatment outcome and whether MI increased participant motivation. Thirty-nine overweight patients (7 males, 32 females) were randomized to receive either 6 sessions of traditional GSH and 2 traditional motivation-focused sessions (GSH); or 6 GSH sessions and 2 sessions utilizing an MI approach to motivation (MI/GSH). In intention-to-treat and completer analyses, significant differences were found in the areas of eating concern and control over eating, favoring MI/GSH. Between-group effect size estimates indicated a small to medium advantage for MI/GSH over GSH in weight loss, as well as on a number of secondary eating-related measures. Analyses of motivational measures indicated no significant differences by treatment group, but suggested that individuals who were more confident in their abilities to change and endorsed more extrinsic reasons for change lost more weight than other participants. Implications and future directions are discussed.Ph.D.Includes bibliographical references (p. 65-70)
Characterization of three different clusters of 18S-26S ribosomal DNA genes in the sea urchin P. lividus: Genetic and epigenetic regulation synchronous to 5S rDNA
No full textWe previously reported the characterization 5S ribosomal DNA (rDNA) clusters in the common sea urchin Paracentrotus lividus and demonstrated the presence of DNA methylation-dependent silencing of embryo specific 5S rDNA cluster in adult tissue. In this work, we show genetic and epigenetic characterization of 18S-26S rDNA clusters in this specie. The results indicate the presence of three different 18S-26S rDNA clusters with different Non-Transcribed Spacer (NTS) regions that have different chromosomal localizations. Moreover, we show that the two largest clusters are hyper-methylated in the promoter-containing NTS regions in adult tissues, as in the 5S rDNA. These findings demonstrate an analogous epigenetic regulation in small and large rDNA clusters and support the logical synchronism in building ribosomes. In fact, all the ribosomal RNA genes must be synchronously and equally transcribed to perform their unique final product
Correction: Dye-sensitized electron transfer from TiO<sub>2</sub> to oxidized triphenylamines that follows first-order kinetics
No full textCorrection for ‘Dye-sensitized electron transfer from TiO2 to oxidized triphenylamines that follows first-order kinetics’ by Brian N. DiMarco et al., Chem. Sci., 2018, DOI: 10.1039/c7sc03839a.</p
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