Range safety data for Saturn SA-10

Saturn SA-10 range safety data, and reliability analysis of S-IV-8 and S-IV-10 stage

Upaya Peningkatan Pola Berpikir Kritis Siswa dengan Menggunakan Metode Pbl (Problem Based Learning) pada Mata Pelajaran Biologi sebuah Penelitian Kelas di SMA Dharma Karya Ut

Penelitian ini bertujuan untuk mengetahui peningkatan kemampuan berfikir kritis siswa, keaktifan siswa, peningkatan hasil belajar siswa, peningkatan afektif dan psikimotor siswa yang dilihat dari hasil tes, dalam pembelajaran biologi dengan metode PBL (Problem Based Learning) di SMA Dharma Karya UT. Subyek penelitian yang digunakan dalam penelitian ini adalah siswa kelas X sebagai kelas eksperimen (metode PBL) di SMA Dharma Karya UT, tahun pelajaran 2012/2013, masing-masing kelas terdiri dari 22 siswa. Penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK). Secara garis besar pelaksanaan Penelitian Tindakan Kelas (PTK) dilakukan melalui siklus-siklus, yang pada setiap siklusnya terdiri dari empat tahap, yaitu (1) Tahap perencanaan (Planning), (2) Tahap Pelaksanaan Tindakan (Acting), (3) Tahap Pengamatan (Observing), dan (4) Tahap refleksi (Reflecting). Penelitian ini menggunakan rancangan True Experimental Design. Pengambilan sampel secara simple random sampling. Kelas X sebagai kelas eksperimen. Variabel dalam penelitian meliputi model pembelajaran PBL (Problem Based Learning) sebagai variabel bebas dan kemampuan berpikir kritis siswa sebagai variabel terikat. Hasil analisis data menunjukan bahwa penelitian pembelajaran dengan metode PBL (Problem Based Learning) hasilnya lebih baik. Seperti dalam hal prestasi belajar siswa yang terlihat dalam kemampuan siswa menjawab hasil tes yang diberikan setelah mengikuti medote PBL (Problem Based Learning), aktifitas siswa dan juga aktifitas guru. Dalam metode PBL ini mampu meningkatkan pola berfikir kritis siswa yang dapat dilihat dari hasil ketuntasan belajar siswa, meningkatkan aktifitas siswa, dan juga aktifitas guru sesuai yang diharapkan

Neural mechanisms of resistance to peer influence in early adolescence

During the shift from a parent-dependent child to a fully autonomous adult, peers take on a significant role in shaping the adolescent’s behaviour. Peer-derived influences are not always positive, however. Here we explore neural correlates of inter-individual differences in the probability of resisting peer influence in early adolescence. Using functional magnetic-resonance imaging (fMRI), we found striking differences between 10-year old children with high and low resistance to peer influence in their brain activity during observation of angry hand-movements and angry facial expressions: compared with subjects with low resistance to peer influence, individuals with high resistance showed a highly coordinated brain activity in neural systems underlying perception of action and decision making. These findings suggest that the probability of resisting peer influence depends on neural interactions during observation of emotion-laden actions

The effect of deformation on dispersion hardened alloys Final report

High temperature tensile properties of TD nickel after mechanical working and recrystallization treatment

Computation of nucleation of a non-equilibrium first-order phase transition using a rare-event algorithm

We introduce a new Forward-Flux Sampling in Time (FFST) algorithm to efficiently measure transition times in rare-event processes in non-equilibrium systems, and apply it to study the first-order (discontinuous) kinetic transition in the Ziff-Gulari-Barshad model of catalytic surface reaction. The average time for the transition to take place, as well as both the spinodal and transition points, are clearly found by this method.Comment: 12 pages, 10 figure

Gedanken Experiments involving Black Holes

Analysis of several gedanken experiments indicates that black hole complementarity cannot be ruled out on the basis of known physical principles. Experiments designed by outside observers to disprove the existence of a quantum-mechanical stretched horizon require knowledge of Planck-scale effects for their analysis. Observers who fall through the event horizon after sampling the Hawking radiation cannot discover duplicate information inside the black hole before hitting the singularity. Experiments by outside observers to detect baryon number violation will yield significant effects well outside the stretched horizon.Comment: 22 pages (including 7 figures), SU-ITP-93-1

Orthogonality catastrophe in a composite fermion liquid

We discuss the emergence of an orthogonality catastrophe in the response of a composite fermion liquid as the filling factor \nu approaches 1/2m, where m=1,2,3.... A tunneling experiment is proposed in which dramatic changes in the I-V characteristic should be observable as \nu is varied. Explicit I-V characteristics calculated within the so-called Modified Random Phase Approximation, are provided for \nu=1/3 -> \nu=1/2.Comment: Latex two-column 6 pages including 5 figure

Image processing mini manual

The intent is to provide an introduction to the image processing capabilities available at the Langley Research Center (LaRC) Central Scientific Computing Complex (CSCC). Various image processing software components are described. Information is given concerning the use of these components in the Data Visualization and Animation Laboratory at LaRC

The Number of States of Two Dimensional Critical String Theory

We discuss string theory vacua which have the wrong number of spacetime dimensions, and give a crude argument that vacua with more than four large dimensions are improbable. We then turn to two dimensional vacua, which naively appear to violate Bekenstein's entropy principle. A classical analysis shows that the naive perturbative counting of states is unjustified. All excited states of the system have strong coupling singularities which prevent us from concluding that they really exist. A speculative interpretation of the classical solutions suggests only a finite number of states will be found in regions bounded by a finite area. We also argue that the vacuum degeneracy of two dimensional classical string theory is removed in quantum mechanics. The system appears to be in a Kosterlitz-Thouless phase. This leads to the conclusion that it is also improbable to have only two large spacetime dimensions in string theory. However, we note that, unlike our argument for high dimensions, our conclusions about the ground state have neglected two dimensional quantum gravitational effects, and are at best incomplete.Comment: 12 pages, harvma