3,306 research outputs found

    Pengaruh Customer Accounting Sebagai Strategic Management Accounting Techniques Dan Customer Orientation Terhadap Organizational Performance

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    This Study was done to examine the affect of customer accounting as strategic management accounting techniques and customer orientation to organizational performance. This study used primary data from questionnaires which were distributed to 50 manufacturing companies in Surabaya and Sidoarjo. The data collected would be analyzed by using Partial Least Square method to test the hypothesis. The result showed there were positive and significant influence from customer accounting and customer orientation to organizational performance

    Pengunduhan Ilegal Musik Digital (Mp3) Melalui Jasa Layanan Internet Sebagai Dari Hak Cipta

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    Masalah pelanggaran hak cipta sampai sekarang masih marak terjadi. Salah satu contoh paling signifikan yang bisa kita temui zaman ini adalah pengunduhan illegal musik digital melalui layanan internet, dalam hal ini MP3 ( Motion Picture Layer III ) yang merupakan bukti perkembangan zaman yang semakin pesat. Semakin banyaknya konten gratis di internet yang memudahkan para pengguna internet bisa dengan mudah mengunduh MP3 tanpa melihat kerugian yang dialami oleh yang menciptakan lagu. Hukum hak cipta yang berlaku di berbagai Negara mencoba untuk melakukan tindakan preventif pengunduhan illegal yang semakin lama semakin meningkat. Di Indonesia sendiri, perbuatan pengunduhan illegal semakin meningkat seiring berjalannya waktu. Dalam satu detik, 92 lagu Indonesia diunduh secara ilegal. Dalam sebulan, sekitar 237 juta lagu yang diunduh secara ilegal. Adapun lagu yang diunduh secara legal dalam setahun hanya 15 juta lagu

    Optical studies of metallodielectric photonic crystals: bismuth and gallium infiltrated opals

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    Journal ArticleWe have fabricated three-dimensional metallodielectric photonic crystals that consist of bismuth and gallium metals infiltrated into porous synthetic opals that have 300 nm diam silica balls. The specular reflectivity was measured in a broad spectral range from 0.3 to 25 mm using a variety of light sources, detectors and spectrometers. In addition to broadening of the original Bragg stop bands in the visible spectral range that give rise to iridescence colors, we also found a dramatic decrease of reflectivity in the visible/near-infrared spectral range. For frequencies below a cut-off frequency in the mid-infrared range the reflectivity increases to its normal bulk value in the respective metal, as predicted by theory and fitted by a model calculation

    Evidence for braggoriton excitations in opal photonic crystals infiltrated with highly polarizable dyes

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    Journal ArticleWe studied angle-dependent reflectivity spectra of opal photonic crystals infiltrated with cyanine dye aggregates, which are highly polarizable media with very large Rabi frequency. We show that, at resonance condition between the exciton-polariton of the dye aggregate and the Bragg gap, the Bragg stop band decomposes into two reflectivity bands with a semitransparent spectral range in between, that is due to propagation of braggoritons inside the gap

    Optical and transport studies of single molecule tunnel junctions based on self-assembled monolayers

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    ManuscriptWe have fabricated a variety of novel molecular tunnel junctions based on self-assembled-monolayers (SAM) of two-component solid-state mixtures of molecular wires (1,4 methane benzene-dithiol; Me-BDT with two thiol anchoring groups), and molecular insulator spacers (1-pentanethiol; PT with one thiol anchoring group) at different concentration ratios, r of wires/spacers, which were sandwiched between two metallic electrodes such as gold and cobalt. FTIR spectroscopy and surface titration were used, respectively to verify the formation of covalent bonds with the electrodes, and obtain the number of active molecular wires in the device. The electrical transport properties of the SAM devices were studied as a function of (i) r-value, (ii) temperatures, and (iii) different electrodes, via the conductance and differential conductance spectra. The measurements were used to analyze the Me-BDT density of states near the electrode Fermi level, and the properties of the interface barriers. We measured the Me-BDT single molecule resistance at low bias and gold electrodes to be 6x109 Ohm. We also determine the energy difference, Δ between the Me-BDT HOMO level and the gold Fermi level to be about 1.8 eV. In addition we also found that the temperature dependence of the SAM devices with r < 10-4 is much weaker than that of the pure PT device (or r = 0), showing a small interface barrier

    Electrical and optical studies of gap states in self-assembled molecular aggregates

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    Journal ArticleWe fabricated a variety of two-terminal devices using self-assembled monolayers (SAM) of solid-state mixtures comprised of molecular "wires" [1,4-methane-benzenedithiol (Me-BDT)] and molecular insulator "spacers" [1-pentanethiol], which were prepared at various molar concentrations ratio, r of wires/spacers, and sandwiched between two gold electrodes. The devices' electrical transport was investigated at several r values using the bias voltage (V) dependencies of the conductance and differential conductance at various temperatures. In parallel, we also studied the UV-visible absorption and photoluminescence (PL) emission spectra of the SAM mixtures grown on silica transparent substrates

    Transport studies of isolated molecular wires in self-assembled monolayer devices

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    Journal ArticleWe have fabricated a variety of isolated molecule diodes based on self-assembled monolayers (SAM) of solid-state mixture (SSM) of molecular wires [1,4-methane benzene dithiol (Me-BDT)], and molecular insulator spacers [penthane 1-thiol (PT)] with different concentration ratios r of wires/spacers, which were sandwiched between two gold (Au) electrodes. We introduce two specialized methods borrowed from surface science to (ii) confirm the connectivity between the Me-BDT molecules with the upper Au electrode, and (ii) count the number of isolated molecular wires in the devices. The electrical transport properties of the SSM SAM diodes were studied at different temperatures via the conductance and differential conductance spectra. We found that a potential barrier caused by the spatial connectivity gap between the PT molecules and the upper Au electrode dominates the transport properties of the pure PT SAM diode (r=0). The transport properties of SSM diodes with r values in the range 10−8<r<10−4 are dominated by the conductance of the isolated Me-BDT molecules in the device

    Mesoscopic cooperative emission from a disordered system

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    Journal ArticleWe study theoretically the cooperative light emission from a system of N»1 classical oscillators confined within a volume with spatial scale L much smaller than the radiation wavelength λο=2rrc/ω0. We assume that the oscillator frequencies are randomly distributed around a central frequency ωο with some characteristic width Ω«ω0. In the absence of disorder, that is, Ω=0, the cooperative emission spectrum is composed of a narrow subradiant peak superimposed on a wide superradiant band. When Ω≠o, we demonstrate that if N is large enough, the subradiant peak is not simply broadened by the disorder but rather splits into a system of random narrow peaks. We estimate the spectral width of these peaks as a function of N, L, Ω, and λο. We also estimate the amplitude of this mesoscopic structure in the emission spectrum

    Cooperative emission in ∏-conjugated polymer thin films

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    Journal ArticlePicosecond dynamics of exciton emission and absorption have been studied in neat thin films of a variety of poly (phenylene vinylene) derivatives. We found that the stimulated emission band of 120 nm width and ~1 ns duration, which is observed at low exciton density n, collapses at n > 1017 cm-3 into a much narrower band of 7 nm width and lifetime r « 10 ps. Based on its excitation intensity dependence, polarization, lifetime, illuminated area, and film thickness dependencies, we assign this narrow band to superfluorescence rather than to amplified spontaneous emission

    Ring microlasers from conducting polymers

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    Journal ArticleWe demonstrate pulsed, photopumped multimode laser emission in the visible spectral range from cylindrical microcavities formed by conducting polymer thin films deposited around optical fibers. The laser is characterized by narrow emission lines (~1.5 cm-1), a well-defined excitation threshold, anisotropic emission in both polarization and azimuthal intensity distribution, and high Q(>3000), which leads to a low excitation threshold of order 1 nJ/pulse. We observed two different sets of laser modes; these are wave-guided ring modes in the polymer film and whispering gallery modes close to the optical fiber surface
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