Kompetensi Dosen, Motivasi Belajar Mahasiswa dan Dampaknya terhadap Prestasi Mahasiswa dalam Pembelajaran Pengantar Ekonomi (Studi pada Mahasiswa Program Studi Manajemen Informatika AMIK Bina Sriwijaya Palembang)

Tujuan penelitian – Penelitian ini bertujuan untuk untuk melihat apakah ada pengaruh yang signifikan antara kompetensi dosen dari sudut pandang mahasiswa dan motivasi belajar terhadap prestasi belajar mahasiswa pada mata kuliah Pengantar Ekonomi program studi Manajemen Informatika AMIK Bina Sriwijaya Palembang. Desain/Metodologi/Pendekatan– Data penelitian ini dikumpulkan menggunakan kuesioner, kemudian dianalisis menggunakan Regresi Linier berganda dengan bantuan aplikasi komputer SPSS Temuan– Hasil penelitian menunjukkan bahwa variabel motivasi belajar mahasiswa secara parsial berpengaruh positif dan signifikan terhadap prestasi belajar mahasiswa hal ini dapat dibuktikan dengan nilai t hitung sebesar 3.290 dengan tingkat signifikan sebesar 0.002. Variable Kompetensi dosen juga secara parsial menunjukkan pengaruh yang positif dan signifikan terhadap prestasi belajar mahasiswa dengan nilai t hitung sebesar 4,310 dengan Sig.t = 0,000). Motivasi belajar mahasiswa, Kompetensi dosen menurut sudut pandang mahasiswa secara simultan berpengaruh positif dan signifikan terhadap prestasi belajar mahasiswa. Hal ini dapat dilihat dari nilai F hitung sebesar 14063 dengan tingkat signifikan sebesar 0.000. Keterbatasan penelitian– Penelitian ini hanya terbatas pada variabel kompetensi dosen dari sudut pandang mahasiswa, sehingga dapat dikembangkan dengan variable kompetensi dosen sesuai dengan Undang-undang No 14 tahun 2005 tentang guru dan dosen serta variable motivasi belajar mahasiswa sehingga dapat dikembangkan dengan menambah variable internal lain seperti gaya belajar, lingkungan belajar, fasilitas belajar dan variable lainnya. Originality/value– Penelitian ini berfokus pada bukan hanya matakuliah pengantar ekonomi saja melainkan beberapa matakuliah. Bila memungkinkan pada Perubahan kurikulum

Sum rules for e+e−→W+W−e^+e^- \to W^+W^- helicity amplitudes from BRS invariance

The BRS invariance of the electroweak gauge theory leads to relationships between amplitudes with external massive gauge bosons and amplitudes where some of these gauge bosons are replaced with their corresponding Nambu-Goldstone bosons. Unlike the equivalence theorem, these identities are exact at all energies. In this paper we discuss such identities which relate the process $e^+e^- \to W^+W^-$ to $W^\pm\chi^\mp$ and $\chi^+\chi^-$ production. By using a general form-factor decomposition for $e^+e^- \to W^+W^-$, $e^+e^- \to W^\pm \chi^\mp$ and $e^+e^- \to \chi^+\chi^-$ amplitudes, these identities are expressed as sum rules among scalar form factors. Because these sum rules may be applied order by order in perturbation theory, they provide a powerful test of higher order calculations. By using additional Ward-Takahashi identities we find that the various contributions are divided into separately gauge-invariant subsets, the sum rules applying independently to each subset. After a general discussion of the application of the sum rules we consider the one-loop contributions of scalar-fermions in the Minimal Supersymmetric Standard Model as an illustration.Comment: 37 pages, including 16 figure

Current-Voltage Characteristics of Long-Channel Nanobundle Thin-Film Transistors: A Bottom-up Perspective

By generalizing the classical linear response theory of stick percolation to nonlinear regime, we find that the drain current of a Nanobundle Thin Film Transistor (NB-TFT) is described under a rather general set of conditions by a universal scaling formula ID = A/LS g(LS/LC, rho_S * LS * LS) f(VG, VD), where A is a technology-specific constant, g is function of geometrical factors like stick length (LS), channel length (LC), and stick density (rho_S) and f is a function of drain (VD) and gate (VG) biasing conditions. This scaling formula implies that the measurement of full I-V characteristics of a single NB-TFT is sufficient to predict the performance characteristics of any other transistor with arbitrary geometrical parameters and biasing conditions

SET based experiments for HTSC materials: II

The cuprates seem to exhibit statistics, dimensionality and phase transitions in novel ways. The nature of excitations [i.e. quasiparticle or collective], spin-charge separation, stripes [static and dynamics], inhomogeneities, psuedogap, effect of impurity dopings [e.g. Zn, Ni] and any other phenomenon in these materials must be consistently understood. In this note we further discuss our original suggestion of using Single Electron Tunneling Transistor [SET] based experiments to understand the role of charge dynamics in these systems. Assuming that SET operates as an efficient charge detection system we can expect to understand the underlying physics of charge transport and charge fluctuations in these materials for a range of doping. Experiments such as these can be classed in a general sense as mesoscopic and nano characterization of cuprates and related materials. In principle such experiments can show if electron is fractionalized in cuprates as indicated by ARPES data. In contrast to flux trapping experiments SET based experiments are more direct in providing evidence about spin-charge separation. In addition a detailed picture of nano charge dynamics in cuprates may be obtained.Comment: 10 pages revtex plus four figures; ICMAT 2001 Conference Symposium P: P10-0

Radial Flow from Electromagnetic Probes and Signal of Quark Gluon Plasma

A first attempt has been made to extract the evolution of radial flow from the analysis of the experimental data on electromagnetic probes experimentally measured at SPS and RHIC energies. The $p_T$ spectra of photons and dileptons measured by WA98 and NA60 collaborations respectively at CERN-SPS and the photon spectra obtained by PHENIX collaboration at BNL-RHIC have been used to constrain the theoretical models, rendering the outcome of the analysis largely model independent. We argue that the variation of the radial velocity with invariant mass is indicative of a phase transition from initially produced partons to hadrons at SPS and RHIC energies.Comment: One LaTeX and 9 eps files, to appear in Phys. Rev.

An all-fibre PM MOPA pumped high-power OPO at 3.82 microns based on large aperture PPMgLN

We report a large aperture PPMgLN based OPO generating 21W of average output power at a slope efficiency of 45%, pumped by the output from a polarization maintaining Ytterbium doped fiber MOPA operating at 1060nm producing 58W of average output power and 20ns pulses at a repetition rate of 100kHz. A maximum of 5.5W of optical power was recorded at the idler wavelength of 3.82µm without thermal roll-off. We have experimentally verified that the pulse rise/fall time plays a significant role in the OPO conversion efficiency and that further enhancement in the OPO conversion efficiency will be possible using sub-nanosecond rise and fall times

Weak Kaon Production off the Nucleon

The weak kaon production off the nucleon induced by neutrinos is studied at the low and intermediate energies of interest for some ongoing and future neutrino oscillation experiments. This process is also potentially important for the analysis of proton decay experiments. We develop a microscopical model based on the SU(3) chiral Lagrangians. The basic parameters of the model are fpi, the pion decay constant, Cabibbo's angle, the proton and neutron magnetic moments and the axial vector coupling constants for the baryons octet, D and F, that are obtained from the analysis of the semileptonic decays of neutron and hyperons. The studied mechanisms are the main source of kaon production for neutrino energies up to 1.2 to 1.5 GeV for the various channels and the cross sections are large enough to be amenable to be measured by experiments such as Minerva and T2K