34 research outputs found
-period optical potentials
A Raman configuration of counterpropagating traveling wave fields, one of
which is polarized and the other polarized, is
shown to lead to optical potentials having periodicity.
Such optical potentials may be used to construct optical lattices having periodicity. Using numerical diagonalization, we obtain the
optical potentials for Rb atoms.Comment: 3 pages, 2 figure
perbedaan Pengaruh Latihan Kombinasi Lari-Lompat Tanah Datar dan Tanah Berpasir Terhadap Peningkatan Power Otot Tungkai Pada Mahasiswa Pembinaan Prestasi Taekwondo POK FKIP UNS Tahun 2017
ABSTRAK Alif Fatkhurahman. PERBEDAAN PENGARUH LATIHAN KOMBINASI LARI-LOMPAT TANAH DATAR DAN TANAH BERPASIR TERHADAP PENINGKATAN POWER OTOT TUNGKAI PADA MAHASISWA PEMBINAN PRESTASI TAEKWONDO POK FKIP UNS TAHUN 2017. Skripsi, Fakultas Keguruan dan Ilmu Pendidikan Universitas Sebelas Maret Surakarta. Maret 2018. Tujuan penelitian ini adalah untukmengetahui: 1) Pengaruh latihan kombinasi lari – lompat tanah datar terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. 2) Pengaruh latihan kombinasi lari – lompat tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. 3) Perbedaan pengaruh latihan kombinasi lari – lompat tanah datar dan tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinan prestasi taekwondo POK FKIP UNS Tahun 2017. Penelitian ini merupakan eksperimen, populasi dan sampel dalam penelitian ini adalah mahasiswa putra pembinaan prestasi taekwondo POK FKIP UNS yang berjumlah 20 mahasiswa. Sampel dalam penelitian ini dibagi menjadi 2 kelompok, kelompok 1 sejumlah 10 orang dengan mendapatkan pelatihan lari-lompat tanah datar dan kelompok 2 sejumlah 10 orang dengan mendapatkan pelatihan lari-lompat tanah berpasir. Proses pembagian kelompok menggunakan teknik ordinal pairing. Teknik analisis data menggunakan uji t-test. Hasil penelitian diperoleh kesimpulan bahwa ada pengaruh latihan kombinasi lari-lompat tanah datar terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan nilai thitung = 12,537 > ttabel = 1,83 ini berarti ada perbedaan yang signifikan antara data pre test dengan data post test pada kelompok eksperimen 1 (latihan kombinasi lari-lompat di tanah datar). Ada pengaruh latihan kombinasi lari-lompat tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan thitung = 14,581 > ttabel = 1,83 ini berarti ada perbedaan yang signifikan antara data pre test dengan data post test pada kelompok eksperimen 2 (latihan kombinasi lari-lompat di tanah berpasir). Ada perbedaan pengaruh latihan kombinasi lari-lompat tanah datar dan tanah berpasir terhadap peningkatan Power Otot Tungkai pada mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017, hal ini ditunjukkan dengan nilai thitung = 3,131 > ttabel = 1,83. Hasil ini menunjukkan bahwa metode latihan kombinasi lari-lompat di tanah berpasir lebih baik dibandingkan dengan metode latihan kombinasi lari-lompat di tanah datar terhadap peningkatan power otot tungkai mahasiswa pembinaan prestasi taekwondo POK FKIP UNS Tahun 2017. Kata kunci: Power otot tungkai, metode latihan lari-lompat, tanah datar, tanah berpasir. �ABSTRACT Alif Fatkhurahman. INFLUENCE of DIFFERENCE EXERCISE COMBINATION RUN-JUMP FLAT GROUND and SANDY SOIL AGAINST INCREASED POWER LIMB MUSCLES on STUDENT ACHIEVEMENT COACHING FKIP UNS POK TAEKWONDO YEAR 2017. Thesis, Faculty of teacher training and educational sciences of the University Sebelas maret Maret Surakarta. March 2018. The purpose of this research is untukmengetahui: 1) the influence of combination of exercise running jump – flat ground against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. 2) influence of combination of exercise running jump – sandy soil against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. influence of Difference exercise 3) combination of the run – skip the flat ground and sandy soil against increased Power limb muscles on student achievement pembinan FKIP UNS POK taekwondo Year 2017. This research is experimental, the population and the sample in this research is a student son coaching taekwondo POK FKIP UNS achievements that add up to 20 students. The sample in this research are divided into two groups, group 1 a number of 10 people by getting the training run-flat ground and jump Group 1 a number of 10 people by getting the training run-jump-sandy soil. The process uses ordinal group Division pairing. Data analysis techniques using a t-test test. The research results obtained conclusions that there was influence of exercise a combination of run-flat land the jump to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated by the value of thitung = 12.537 > ttabel = 1.83 this means there is a significant difference between the data pre test post test data on the experimental group 1 (combination workouts run-jump across flat ground). There is the influence of combination of exercise running jump-sandy soil to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated with thitung = 14.581 > ttabel = 1.83 this means there are differences that significantly between the data pre test post test data on the experimental group 2 (practice run-jump combination in the sandy soil). There is a difference of influence of exercise running-jump combination flat ground and sandy soil to increased Power limb muscles on student achievement coaching taekwondo POK FKIP UNS Year 2017, it is indicated by the value of thitung = ttabel > 3.131 = 1.83. These results indicate that the method combination exercises run-jump across the sandy soil is better compared with the method of exercise combinations run-jump across the flat land to increased power student achievement coaching limb muscles taekwondo POK FKIP UNS The year 2017. Keywords: Power method of limb muscles, exercise run-jump, flat ground, sandy soil
Effect of anisotropic imaging in off-axis adaptive astronomical systems
Effect of anisotropic imaging arising due to the off-axis adaptive
correction is considered. The main manifestation of this effect is that the
isophotes of the image of a star separated by some angular distance from the
guide one have a non-circular form. It is shown that the effect of
interest depends strongly on the observation conditions, and under certain
conditions the image width in direction towards the guide star can be up to
two times wider than in the transversal one. The results obtained can be
used in practice for the reconstruction or calibration of images obtained
after the off-axis adaptive correction
Co-phasing of segmented telescopes: A new approach to piston measurements
One of the main problems arising in the co-phasing of
segmented telescopes is the problem of measurements of the
relative pistons among the segments. These measurements become
especially complicated when the pistons are in order of wavelength
fractions. In this paper we present a new approach relative
piston measurements which allows for a high-accuracy
reconstruction of small pistons. Our approach is based on the
shearing interferometry and compared to existed methods
it has the following advantages: a high accuracy of piston
reconstruction in presence of high levels of noise is combined with
the ability to retrieve the pistons taking into account the segment's aberrations
Efficiency of off-axis astronomical adaptive systems: Comparison of theoretical and experimental data
 The efficiency of off-axis adaptive astronomical systems is estimated
using both the theoretical Hufnagel model and recently obtained experimental
profiles. The efficiency of interest is considered through the
Strehl ratio of the corrected image. The experimental profile
used in calculations is a result of measurements carried out at the
Observatorio Astronomica Nacional at San Pedro Mártir (Mexico). It is
found that there is a significant difference in the efficiency calculated
from both profiles because they differ strongly in structure. The
experimental one has a pronounced layered structure with a great amount of
the turbulence strength concentrated near the ground, while the theoretical
profile suggests more smooth behavior of with altitude