Local pore size correlations determine flow distributions in porous media

The relationship between the microstructure of a porous medium and the observed flow distribution is still a puzzle. We resolve it with an analytical model, where the local correlations between adjacent pores, which determine the distribution of flows propagated from one pore downstream, predict the flow distribution. Numerical simulations of a two-dimensional porous medium verify the model and clearly show the transition of flow distributions from $\delta$-function-like via Gaussians to exponential with increasing disorder. Comparison to experimental data further verifies our numerical approach.Comment: 5 pages, 3 figures, supplemental materia

Prediction of big five personality traits from mobile application usage

Abstract. Smartphones evolved being an integral part of our daily lives and in recent days. Studies show that smartphone usage is correlated to user personality traits. This critical ecosystem is dependent on several variables such as geographic location, demographic traits, ethnic impact or cultural influence and so on. While significant number of demographic, environmental and medical analysis is done based on smartphone usage, there are inadequate amount of study carried out to analyse human personality. All of these information provide pivotal insights for improving user experience, creating recommendations, identifying marketing strategies and for a general overall usage improvement. This study is done with application usage data collected over 6 months from 739 Android smartphone users along with a 50-item Big Five Personality Trait questionnaire. The analysis focuses on the fact that, category-level aggregated application usage is enough for predicting Big Five personality traits achieving 9–14% error which is 86–91% accuracy on average. This study concludes that user personality generates a fundamental impact on smartphone application and application category usage. This work reflects the possible personality-driven research in future and depicts the significance and involvement of application categories in achieving proper accuracy in general traits, while pursuing for personality study

Fractionalization of itinerant anyons in one dimensional chains

We construct models of interacting itinerant non-Abelian anyons moving along one-dimensional chains, focusing in particular on itinerant Ising anyon chains, and derive effective anyonic t-J models for the low energy sectors. Solving these models by exact diagonalization, we find a fractionalization of the anyons into charge and (non-Abelian) anyonic degrees of freedom -- a generalization of spin-charge separation of electrons which occurs in Luttinger liquids. A detailed description of the excitation spectrum by combining spectra for charge and anyonic sectors requires a subtle coupling between charge and anyonic excitations at the microscopic level (which we also find to be present in Luttinger liquids), despite the macroscopic fractionalization.Comment: 5 pages, 3 figure

Is there an expectations gap in the roles of independent directors? An explorative study of listed Chinese companies

This paper investigates whether an expectations gap exists in the control, strategic and resource provision roles that independent directors play in the corporate governance of listed Chinese firms and the factors that affect their performance of these roles. For this purpose, we interviewed Chinese executive directors, independent directors, institutional investors and stock exchange regulators. We find a performance gap but no reasonableness gap with respect to the control and strategic roles. The results suggest that the performance gap may be attributed to such factors as the ill-defined roles, independent directors’ limited amount of time commitment and their lack of competence and objectivity. Interestingly, there is disagreement over the protection of minority interest as the objective of the control role. We find no consensus on the desirability, reasonableness and effectiveness of independent directors’ resource provision role, perhaps because of a pejorative interpretation of this role as an exercise of guanxi

ANALISIS STRATEGI PERKULIAHAN DAN BAKAT INSTALATUR PRAKTIK INSTALASI LISTRIK PADA PROGRAM STUDI PENDIDIKAN TEKNIK ELEKTRO UNDANA KUPANG

Penelitian ini dirancang bertujuan untuk menerapkan pengembangan strategi perkuliahan dan bakat instalatur terhadap praktik instalasi listrik penerangan dengan melihat bakat dimiliki mahasiswa pada program studi Pendidikan Teknik Elektro FKIP Undana Kupang. Pengujian hipotesis penelitian  adanya perbedaan yang signifikan hasil kuliah praktik instalasi listrik antara mahasiswa yang diajar dengan strategi perkuliahan dan bakat instalatur mahasiswa, dengan uji Anava 2 jalur, desain penelitian dengan faktor 2x2. Hasil Penelitian (1). Terdapat interaksi antara  strategi perkuliahan dan bakat instalatur terhadap kemampuan praktik instalasi listrik, (2). Terdapat perbedaan pengaruh strategi perkuliahan dengan media Video Compact Disc (VCD) dan demonstrasi terhadap kemampuan praktik instalasi listrik, (3). Terdapat perbedaan pengaruh strategi perkuliahan dengan media VCD dan demonstrasi terhadap keterampilan praktik instalasi listrik, dan (4). Terdapat perbedaan pengaruh strategi perkuliahan dengan media VCD dan demonstrasi terhadap keterampilan praktik instalasi listrik bagi mahasiswa berbakat instalatur rendah.   &nbsp

Coulomb Blockade Doppelgangers in Quantum Hall States

In this paper, we ask the question: How well can Coulomb blockade experiments correctly identify and distinguish between different topological orders in quantum Hall states? We definitively find the answer to be: Quite poorly. In particular, we write the general expression for the spacing of resonance peaks in a simple form that explicitly displays its dependence on the conformal scaling dimensions of the systems' edge modes. This form makes transparent the general argument that the Coulomb blockade peak spacings do not provide a strongly indicative signature of the topological order of the system, since it is only weakly related to the braiding statistics. We bolster this general argument with examples for all the most physically relevant non-Abelian candidate states, demonstrating that they have Coulomb blockade doppelgangers -- candidate states at the same filling fraction with identical Coulomb blockade signatures, but dramatically different topological orders and braiding statistics.Comment: 12 pages, 1 figure; portions of this paper were formerly included in Appendix C of arXiv:0903.3108; v2: examples added, minor corrections made; v3: discussions of non-uniform filling and of hierarchical counterparts of multi-component states added, minor corrections mad

Analyzing consolidation data to predict smear zone characteristics induced by vertical drain installation for soft soil improvement

In this paper, the effects of variability of smear zone characteristics induced by installation of prefabricated vertical drains on the preloading design are investigated employing analytical and numerical approaches. Conventional radial consolidation theory has been adopted to conduct analytical parametric studies considering variations of smear zone permeability and extent. FLAC 2D finite difference software has been employed to conduct the numerical simulations. The finite difference analyses have been verified using three case studies including two embankments and a large-scale laboratory consolidometer with a central geosynthetic vertical drain. A comprehensive numerical parametric study is conducted to investigate the influence of smear zone permeability and extent on the model predictions. Furthermore, the construction of the trial embankment is recommended as a reliable solution to estimate accurate smear zone properties and minimise the post construction settlement. A back-calculation procedure is employed to determine the minimum required waiting time after construction of the trial embankment to predict the smear zone characteristics precisely. Results of this study indicate that the accurate smear zone permeability and extent can be back-calculated when 30% degree of consolidation is obtained after construction of the trial embankment. © 2014 Techno-Press, Ltd

PENGARUH PENGGUNAAN MEDIA PEMBELAJARAN VIDEO DAN TRAINER TERHADAP HASIL BELAJAR MATA PELAJARAN DASAR LISTRIK DAN ELEKTRONIKA PADA PESERTA DIDIK KELAS X TITL SMK NEGERI 2 KUPANG

Penelitian ini bertujuan untuk mengetahui 1) adanya pengaruh penggunaan media pembelajaran video terhadap hasil belajar mata pelajaran dasar listrik dan elektronika peserta didik kelas X TITL SMK Negeri 2 Kupang. 2) adanya pengaruh penggunaan media pembelajaran trainer pengukuran tahanan resistansi listrik terhadap hasil belajar peserta didik kelas X TITL SMK Negeri 2 Kupang. 3) adanya perbedaan penggunaan media pembelajaran video dan media pembelajaran trainer pengukuran tahanan resistansi listrik terhadap hasil belajar peserta didik kelas X TITL SMK Negeri 2 Kupang. Metode penelitian yang digunakan dalam penelitian ini yaitu penelitian eksperimen, desain rancangan penelitian yang digunakan yaitu Quasi-Experimental Desig. Hasil penelitian menunjukkan bahwa media pembelajaran video berpengaruh sebesar 40,6% dan t hitung > t tabel (4.820 > 2,032) danP value < α sebesar (0,000 < 0,05), maka dapat disimpulkan bahwa ada pengaruh secara signifikan antara media pembelajaran video dengan hasil belajar terhadap hasil belajar siswa. Untuk variabel media pembelajaran trainer pengukuran tahanan resistansi listrik berpengaruh sebesar 45,8 % dengan nilai t hitung< t tabel (5.361 > 2,032 ) P value < α sebesar (0,000 < 0,05) maka dapat disimpulkan bahwa ada pengaruh secara signifikan antara media pembelajaran trainer pengukuran tahanan listrik dengan hasil belajar. Untuk mengetahui adanya perbedaan diperoleh t hitung= 3,362 dan didapatkan nilai t tabel = 1.994 dengan df = 70, karena Nilai t hitung > t tabel (3,362 > 1,994) dengan nilai Signifikansi (2-tailed) sebesar 0,001 < 0,05 maka terdapat perbedaan yang signifikan antara media pembelajaran video dan media pembelajaran trainer pengukuran tahanan listrik terhadap hasil belajar siswa