Perancangan Data Mart Pada PT Ebdesk Teknologi (Studi kasus : Pihak Chief Technology Officer)

Saat ini informasi berita melalui media sosial pada facebook dan twitter semakin berkembang maka dari itu diperlukan pengembangan aplikasi Media Management oleh pihak Chief Technology Officer yang bertujuan untuk memenuhi permintaan client dan meningkatkan kualitas informasi. Data media sosial facebook dan twitter di Media Management belum dimanfaatkan secara maksimal untuk keperluan analisis yang dilakukan oleh pihak Chief Technology Officer. Data media sosial tersebut dirancang untuk menghindari data redundancy serta laporan yang dihasilkan bersifat operasional sehingga membutuhkan resource dan waktu untuk menganalisis data. Karena itu dibutuhkan perancangan terhadap data media sosial, agar data tersebut mempunyai bentuk yang menggambarkan entitas data media sosial dari berbagai sudut pandang yang mudah dianalisis. Solusi yang dapat mendukung terbentuknya sebuah informasi multidimensi yang terstruktur yaitu dengan menyediakan sebuah basis data yang dapat dipresentasikan dalam berbagai bentuk yang konsisten dan basis data yang memiliki hal tersebut adalah data mart. Data mart merupakan bagian dari data warehouse yang dirancang khusus untuk menganalisis data berdasarkan subjek-subjek, mendukung kebutuhan query, dan pengambilan keputusan pihak manajemen. Pembangunan data mart menggunakan metode Ralph Kimball, pembentukan data dengan proses ETL(Extract Transform Loading) menggunakan SSIS (SQL Server Integrated Service), untuk proses analisis menggunakan OLAP (On-Line Analytical Processing) dengan tools DevExpress pada Microsoft Visual Studio 2012 dan data mart dipresentasikan berbasis desktop yang berjalan pada platform windows. Dengan dibangunnya data mart dapat mempermudah pihak Chief Technology Officer dalam mendukung proses analisis dan pengambilan keputusan dalam pengembangan aplikasi Media Management yang dapat memaksimalkan pelayanan kepada client dalam mendapatkan informasi berita secara detail

Measurement of the hyperfine structure of the S1/2-D5/2 transition in 43Ca+

The hyperfine structure of the S1/2-D5/2 quadrupole transition at 729 nm in 43Ca+ has been investigated by laser spectroscopy using a single trapped 43Ca+ ion. We determine the hyperfine structure constants of the metastable level as A=-3.8931(2) MHz and B=-4.241(4) MHz. The isotope shift of the transition with respect to 40Ca+ was measured to be 4134.713(5) MHz. We demonstrate the existence of transitions that become independent of the first-order Zeeman shift at non-zero low magnetic fields. These transitions might be better suited for building a frequency standard than the well-known 'clock transitions' between m=0 levels at zero magnetic field.Comment: corrected for sign errors in the hyperfine constants. No corrections to were made to the data analysi

Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap

An ultrastable optical clock based on neutral atoms trapped in an optical lattice is proposed. Complete control over the light shift is achieved by employing the $5s^2 {}^1S_0 \to 5s5p {}^3P_0$ transition of ${}^{87}{\rm Sr}$ atoms as a "clock transition". Calculations of ac multipole polarizabilities and dipole hyperpolarizabilities for the clock transition indicate that the contribution of the higher-order light shifts can be reduced to less than 1 mHz, allowing for a projected accuracy of better than $10^{-17}$.Comment: 4 pages, 2 figures, accepted for publication in Phys. Rev. Let

Measure of phonon-number moments and motional quadratures through infinitesimal-time probing of trapped ions

A method for gaining information about the phonon-number moments and the generalized nonlinear and linear quadratures in the motion of trapped ions (in particular, position and momentum) is proposed, valid inside and outside the Lamb-Dicke regime. It is based on the measurement of first time derivatives of electronic populations, evaluated at the motion-probe interaction time t=0. In contrast to other state-reconstruction proposals, based on measuring Rabi oscillations or dispersive interactions, the present scheme can be performed resonantly at infinitesimal short motion-probe interaction times, remaining thus insensitive to decoherence processes.Comment: 10 pages. Accepted in JPhys

Electron impact ionization loading of a surface electrode ion trap

We demonstrate a method for loading surface electrode ion traps by electron impact ionization. The method relies on the property of surface electrode geometries that the trap depth can be increased at the cost of more micromotion. By introducing a buffer gas, we can counteract the rf heating assocated with the micromotion and benefit from the larger trap depth. After an initial loading of the trap, standard compensation techniques can be used to cancel the stray fields resulting from charged dielectric and allow for the loading of the trap at ultra-high vacuum.Comment: 4 pages, 5 eps figures. Shift in focus, minor correction

Sub-dekahertz ultraviolet spectroscopy of 199Hg+

Using a laser that is frequency-locked to a Fabry-Perot etalon of high finesse and stability, we probe the 5d10 6s 2S_1/2 (F=0) - 5d9 6s 2D_5/2 (F=2) Delta-m_F = 0 electric-quadrupole transition of a single laser-cooled 199Hg+ ion stored in a cryogenic radio-frequency ion trap. We observe Fourier-transform limited linewidths as narrow as 6.7 Hz at 282 nm (1.06 X 10^15 Hz), yielding a line Q = 1.6 X 10^14. We perform a preliminary measurement of the 5d9 6s2 2D_5/2 electric-quadrupole shift due to interaction with the static fields of the trap, and discuss the implications for future trapped-ion optical frequency standards.Comment: 4 pages, 4 figures, submitted for publicatio