3,253 research outputs found

    Diffusion in the Markovian limit of the spatio-temporal colored noise

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    We explore the diffusion process in the non-Markovian spatio-temporal noise.%the escape rate problem in the non-Markovian spatio-temporal random noise. There is a non-trivial short memory regime, i.e., the Markovian limit characterized by a scaling relation between the spatial and temporal correlation lengths. In this regime, a Fokker-Planck equation is derived by expanding the trajectory around the systematic motion and the non-Markovian nature amounts to the systematic reduction of the potential. For a system with the potential barrier, this fact leads to the renormalization of both the barrier height and collisional prefactor in the Kramers escape rate, with the resultant rate showing a maximum at some scaling limit.Comment: 4pages,2figure

    A Factor Analytic Validation Study of the Scale of Teachers\u27 Attitudes Towards Inclusive Classrooms (STATIC))

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    General and special education teachers (N = 125) completed the Scale of Teachers’ Attitudes towards Inclusive Classrooms (STATIC). The internal consistency of the instrument was strong with an alpha of .89. The measure demonstrated excellent test-retest reliability (r = .99) and a dependent t-test was non-significant, indicating mean group temporal stability. An exploratory factor analysis resulted in a five-factor scale accounting for 61.6% of the variance versus the original four factors identified by the author of the instrument. Future research and potential use of the instrument are discussed

    Charmed hadron physics in quenched anisotropic lattice QCD

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    We investigate the anisotropic lattice with O(a)O(a) improved quark action as a candidate of framework in which we can treat both the heavy and light quark region in the same manner and systematically reduce the systematic uncertainties. To examine applicability of anisotropic lattice, we calculate the charmed meson spectrum and decay constants in quenched approximation. We find consistent result with most advanced results on isotropic lattices.Comment: 3 pages, 1 figure, contribution to Fifth KEK Topical Conference - Frontiers in Flavor Physics -, Tsukuba, Japan, November 20-22, 200

    Heavy-light meson in anisotropic lattice QCD

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    We examine whether the O(a)O(a) improved quark action on anisotropic lattices can be used as a framework for the heavy quark, which enables precision computation of matrix elements of heavy-light mesons. To this end, it is crucial to verify that a mass independent and nonperturbative tuning of the parameters is possible. As a first step, we observe the dispersion relation of heavy-light mesons on a quenched lattice using the action which is nonperturbatively tuned only for the leading terms. On a lattice with the spatial cutoff aσ1a_\sigma^{-1} \simeq 1.6 GeV and the anisotropy ξ=4\xi=4, the relativity relation holds within 2% accuracy in the quark mass region aσmQ1.2a_\sigma m_Q \leq 1.2 with the bare anisotropy parameter tuned for the massless quark. We also apply the action to a calculation of heavy-light decay constants in the charm quark mass region.Comment: Lattice2002(heavyquark), 3 pages, 2 figure

    Using Pilot Systems to Execute Many Task Workloads on Supercomputers

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    High performance computing systems have historically been designed to support applications comprised of mostly monolithic, single-job workloads. Pilot systems decouple workload specification, resource selection, and task execution via job placeholders and late-binding. Pilot systems help to satisfy the resource requirements of workloads comprised of multiple tasks. RADICAL-Pilot (RP) is a modular and extensible Python-based pilot system. In this paper we describe RP's design, architecture and implementation, and characterize its performance. RP is capable of spawning more than 100 tasks/second and supports the steady-state execution of up to 16K concurrent tasks. RP can be used stand-alone, as well as integrated with other application-level tools as a runtime system

    Loss of AP-3 function affects spontaneous and evoked release at hippocampal mossy fiber synapses

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    Synaptic vesicle (SV) exocytosis mediating neurotransmitter release occurs spontaneously at low intraterminal calcium concentrations and is stimulated by a rise in intracellular calcium. Exocytosis is compensated for by the reformation of vesicles at plasma membrane and endosomes. Although the adaptor complex AP-3 was proposed to be involved in the formation of SVs from endosomes, whether its function has an indirect effect on exocytosis remains unknown. Using mocha mice, which are deficient in functional AP-3, we identify an AP-3-dependent tetanus neurotoxin-resistant asynchronous release that can be evoked at hippocampal mossy fiber (MF) synapses. Presynaptic targeting of the tetanus neurotoxin-resistant vesicle soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) tetanus neurotoxin-insensitive vesicle-associated membrane protein (TI-VAMP) is lost in mocha hippocampal MF terminals, whereas the localization of synaptobrevin 2 is unaffected. In addition, quantal release in mocha cultures is more frequent and more sensitive to sucrose. We conclude that lack of AP-3 results in more constitutive secretion and loss of an asynchronous evoked release component, suggesting an important function of AP-3 in regulating SV exocytosis at MF terminals

    Thermal fluctuation of magnetization in nanocrystalline FePt thin films with high coercivity

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    科研費報告書収録論文(課題番号:11305027・基盤研究(A)(2)・H11~H12/研究代表者:中村, 慶久/柔軟なスピンクラスター配列からなる超高密度磁気記録メディアの研究

    Pengaruh Model Pembelajaran Problem Solving Dan Problem Posing Terhadap Hasil Belajar Ditinjau Dari Kreativitas Siswa Pada Materi Termokimia Kelas XI SMA Negeri 1 Karanganyar Tahun Pelajaran 2015/216

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    Penelitian ini bertujuan untuk mengetahui: (1) pengaruh penggunaan model pembelajaran problem solving dan problem posing terhadap hasil belajar siswa; (2) pengaruh kreativitas terhadap hasil belajar siswa; dan (3) interaksi antara penggunaan model pembelajaran problem solving dan problem posing dengan kreativitas terhadap hasil belajar siswa pada materi termokimia di SMA Negeri 1 Karanganyar. Penelitian ini menggunakan metode eksperimen dengan desain faktorial 2x2. Populasi penelitian adalah seluruh siswa kelas XI MIA SMA Negeri 1 Karanganyar tahun pelajaran 2015/2016 sebanyak 9 kelas. Sampel penelitian ditentukan secara acak melalui teknik cluster random sampling dan diambil 2 kelas sebagai sampel. Teknik pengumpulan data menggunakan teknik tes untuk mengukur hasil belajar aspek pengetahuan dan kreativitas siswa dan teknik non tes untuk hasil belajar aspek sikap yang meliputi angket, observasi, jurnal guru dan untuk hasil belajar aspek keterampilan yang meliputi observasi dan penulisan laporan praktikum. Uji hipotesis penelitian menggunakan uji parametrik anava dua jalan untuk hasil belajar aspek pengetahuan dan keterampilan, dan uji non parametrik Kruskal Wallis untuk hasil belajar aspek sikap. Hasil penelitian menunjukkan bahwa: (1) ada pengaruh pembelajaran kimia menggunakan model problem solving dan problem posing terhadap hasil belajar aspek pengetahuan dan keterampilan, namun tidak ada pengaruh terhadap hasil belajar aspek sikap. Siswa yang dibelajarkan menggunakan model pembelajaran problem solving memiliki hasil belajar aspek pengetahuan dan sikap lebih baik dibandingkan siswa yang dibelajarkan dengan model pembelajaran problem posing; (2) ada pengaruh kreativitas tinggi dan rendah terhadap hasil belajar aspek sikap, namun tidak ada pengaruh terhadap hasil belajar aspek dan keterampilan. Siswa dengan kreativitas tinggi memiliki hasil belajar aspek pengetahuan, sikap, dan keterampilan lebih baik dibandingkan siswa dengan kreativitas rendah; (3) tidak ada interaksi antara penggunaan model pembelajaran problem solving dan problem posing dengan kreativitas siswa terhadap hasil belajar aspek pengetahuan, sikap, dan keterampilan
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