43 research outputs found

    Desain Visual Antarmuka Website E-kartu Nikah

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    Pernikahan yang sah secara agama dan yang tercatat resmi oleh pemerintah ditunjukkan dengan bukti kepemilikan buku nikah. Buku nikah menjadi salah satu dokumen pribadi yang digunakan untuk berbagai kepengurusan dan birokrasi pemerintahan seperti pembuatan pasport, tunjangan keluarga, asuransi dan urusan lainnya. Efektifitas dari segi keamanan maupun dalam penggunaan buku bikah sangatlah perlu untuk ditingkatkan. E-kartu nikah merupakan elektronik buku nikah yang dilengkapi dengan teknologi mikrochip sebagai media penyimpan data dan sebagai kemanan data yang tersimpan didalamnya. Informasi yang tersimpan didalamnya adalah informasi yang ada pada buku nikah. Kartu pintar E-kartu nikah terintegrasi dengan website, dimana pengguna dapat mengakses infromasi menggunakan nomor seri yang ada pada E-kartu nikah. Teknologi microchip yang tertanam pada kartu mempermudah dan mempercepat proses verfikasi data apabila suatu kepengurusan menggunakan alat bantu card reader. Sasaran pengguna website E-kartu nikah mencangkup semua golongan dengan rentang usia diatas 19 tahun. Pada penelitian ini fokus pada perancangan antarmuka website dengan memperhatikan aspek elemen-elemen dasar desain visual pada desain antarmuka dengan menggunakan model prtotipe jenis evolutionary. Hasil akhir dari penilitian ini adalah rancangan kartu pintar terbuat dari plastik dan berukuran 5,4 x 8,6 cm dan website sebagai portal akses E-kartu nikah

    Search for a new gauge boson in the Aâ€ČA' Experiment (APEX)

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    We present a search at Jefferson Laboratory for new forces mediated by sub-GeV vector bosons with weak coupling αâ€Č\alpha' to electrons. Such a particle Aâ€ČA' can be produced in electron-nucleus fixed-target scattering and then decay to an e+e−e^+e^- pair, producing a narrow resonance in the QED trident spectrum. Using APEX test run data, we searched in the mass range 175--250 MeV, found no evidence for an Aâ€Č→e+e−A'\to e^+e^- reaction, and set an upper limit of αâ€Č/α≃10−6\alpha'/\alpha \simeq 10^{-6}. Our findings demonstrate that fixed-target searches can explore a new, wide, and important range of masses and couplings for sub-GeV forces.Comment: 5 pages, 5 figures, references adde

    Electroexcitation of the Δ+(1232)\Delta^{+}(1232) at low momentum transfer

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    We report on new p(e,eâ€Čp)π∘(e,e^\prime p)\pi^\circ measurements at the Δ+(1232)\Delta^{+}(1232) resonance at the low momentum transfer region. The mesonic cloud dynamics is predicted to be dominant and rapidly changing in this kinematic region offering a test bed for chiral effective field theory calculations. The new data explore the low Q2Q^2 dependence of the resonant quadrupole amplitudes while extending the measurements of the Coulomb quadrupole amplitude to the lowest momentum transfer ever reached. The results disagree with predictions of constituent quark models and are in reasonable agreement with dynamical calculations that include pion cloud effects, chiral effective field theory and lattice calculations. The reported measurements suggest that improvement is required to the theoretical calculations and provide valuable input that will allow their refinements

    LSST: from Science Drivers to Reference Design and Anticipated Data Products

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    (Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. LSST will be a wide-field ground-based system sited at Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg2^2 field of view, and a 3.2 Gigapixel camera. The standard observing sequence will consist of pairs of 15-second exposures in a given field, with two such visits in each pointing in a given night. With these repeats, the LSST system is capable of imaging about 10,000 square degrees of sky in a single filter in three nights. The typical 5σ\sigma point-source depth in a single visit in rr will be ∌24.5\sim 24.5 (AB). The project is in the construction phase and will begin regular survey operations by 2022. The survey area will be contained within 30,000 deg2^2 with ÎŽ<+34.5∘\delta<+34.5^\circ, and will be imaged multiple times in six bands, ugrizyugrizy, covering the wavelength range 320--1050 nm. About 90\% of the observing time will be devoted to a deep-wide-fast survey mode which will uniformly observe a 18,000 deg2^2 region about 800 times (summed over all six bands) during the anticipated 10 years of operations, and yield a coadded map to r∌27.5r\sim27.5. The remaining 10\% of the observing time will be allocated to projects such as a Very Deep and Fast time domain survey. The goal is to make LSST data products, including a relational database of about 32 trillion observations of 40 billion objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures available from https://www.lsst.org/overvie

    Search for three-nucleon short-range correlations in light nuclei

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    We present new data probing short-range correlations (SRCs) in nuclei through the measurement of electron scattering off high-momentum nucleons in nuclei. The inclusive ^{4}He/^{3}He cross section ratio is observed to be both x and Q^{2} independent for 1.52, our data support the hypothesis that a previous claim of three-nucleon correlation dominance was an artifact caused by the limited resolution of the measurement. While 3N-SRCs appear to have an important contribution, our data show that isolating 3N-SRCs is significantly more complicated than for 2N-SRCs.United States. Department of Energy (Contract DE-AC05-06OR23177)United States. Department of Energy (Contract DE-AC02-06CH11357)United States. Department of Energy (Contract DE-FG02-96ER40950

    Probing the Repulsive Core of the Nucleon-Nucleon Interaction via the 4He(e,e'pN) Triple-Coincidence Reaction

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    We studied simultaneously the 4He(e,e'p), 4He(e,e'pp), and 4He(e,e'pn) reactions at Q^2=2 [GeV/c]2 and x_B>1, for a (e,e'p) missing-momentum range of 400 to 830 MeV/c. The knocked-out proton was detected in coincidence with a proton or neutron recoiling almost back to back to the missing momentum, leaving the residual A=2 system at low excitation energy. These data were used to identify two-nucleon short-range correlated pairs and to deduce their isospin structure as a function of missing momentum in a region where the nucleon-nucleon force is expected to change from predominantly tensor to repulsive. Neutron-proton pairs dominate the high-momentum tail of the nucleon momentum distributions, but their abundance is reduced as the nucleon momentum increases beyond ~500 MeV/c. The extracted fraction of proton-proton pairs is small and almost independent of the missing momentum in the range we studied. Our data are compared with ab-initio calculations of two-nucleon momentum distributions in 4He.Comment: 6 pages, 2 figure

    Dispositifs médicaux et développement durable.

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    Phosphoryl Transfers of the Phospholipase D Superfamily: A Quantum Mechanical Theoretical Study

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    The HKD-containing Phospholipase D superfamily catalyzes the cleavage of the headgroup of phosphatidylcholine to produce phosphatidic acid and choline. The mechanism of this cleavage process is studied theoretically. The geometric basis of our models is the X-ray crystal structure of the five-coordinate phosphohistidine intermediate from Streptomyces sp. Strain PMF (PDB Code = 1V0Y). Hybrid ONIOM QM:QM methodology with Density Functional Theory (DFT) and semiempirical PM6 (DFT:PM6) is used to acquire thermodynamic and kinetic data for the initial phosphoryl transfer, subsequent hydrolysis, and finally, the formation of the experimentally observed ″dead-end″ phosphohistidine product (PDB Code = 1V0W). The model contains nineteen amino acid residues (including the two highly conserved HKD-motifs), four explicit water molecules, and the substrate. Via computations, the persistence of the short-lived five-coordinate phosphorane intermediate on the minutes times scale is rationalized. This five-coordinate phosphohistidine intermediate energetically exists between the hydrolysis event and ″substrate reorganization″ (the reorganization of the in vitro model substrate within the active site). Computations directly support the thermodynamic favorability of the in vitro four-coordinate phosphohistidine product. In vivo, the activation energy of substrate reorganization is too high, perhaps due to a combination of substrate immobility when embedded in the lipid bilayer, as well as its larger steric bulk compared to the compound used in the in vitro substrate soaks. On this longer time scale, the enzyme will migrate along the lipid membrane toward its next substrate target, rather than promote the formation of the dead-end product. © 2013 American Chemical Society
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