3,578 research outputs found

    Video Data Visualization System: Semantic Classification And Personalization

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    We present in this paper an intelligent video data visualization tool, based on semantic classification, for retrieving and exploring a large scale corpus of videos. Our work is based on semantic classification resulting from semantic analysis of video. The obtained classes will be projected in the visualization space. The graph is represented by nodes and edges, the nodes are the keyframes of video documents and the edges are the relation between documents and the classes of documents. Finally, we construct the user's profile, based on the interaction with the system, to render the system more adequate to its references.Comment: graphic

    Stabilization of carbon nanotubes by filling with inner tubes: An optical spectroscopy study on double-walled carbon nanotubes under hydrostatic pressure

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    The stabilization of carbon nanotubes via the filling with inner tubes is demonstrated by probing the optical transitions in double-walled carbon nanotube bundles under hydrostatic pressure with optical spectroscopy. Double-walled carbon nanotube films were prepared from fullerene peapods and characterized by HRTEM and optical spectroscopy. In comparison to single-walled carbon nanotubes, the pressure-induced redshifts of the optical transitions in the outer tubes are significantly smaller below \sim10 GPa, demonstrating the enhanced mechanical stability due to the inner tube already at low pressures. Anomalies at the critical pressure Pd_d\approx12 GPa signal the onset of the pressure-induced deformation of the tubular cross-sections. The value of Pd_d is in very good agreement with theoretical predictions of the pressure-induced structural transitions in double-walled carbon nanotube bundles with similar average diameters.Comment: 6 pages, 4 figures; to appear in Phys. Rev.

    PENGARUH UKURAN PERUSAHAAN DAN TIPE INDUSTRI TERHADAP NILAI PERUSAHAAN DENGAN PENGUNGKAPAN EMISI KARBON SEBAGAI VARIABEL INTERVENING (Studi Empiris pada Perusahaan yang Terdaftar di Carbon Disclosure Project Nordic Tahun 2015)

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    This study aims to obtain empirical evidence and analyze the influence of firm size and industry type on firm value by using carbon emissions disclosure as intervening variable. The population in this study is a company registered in CDP (Carbon Disclosure Project) Nordic in 2015. The total sample used in this study was 116 companies based on established criteria. Data analysis was done by descriptive statistic analysis, classical assumption test, hypothesis test, path analysis and soebl test. The results of this research analysis indicate that the firm size and industry type have a significant positive effect on firm value by using carbon emission disclosure as intervening variable

    Desain Umpan Balik Keadaan Menggunakan Algoritma Particle Swarm Optimization Dan Differential Evolutionalgorithm Studi Kasus Gerak Lateral Pesawat F-16

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    The purpose of Linear Quadratic Regulator (LQR) optimal control system is to stabilize the system, so that the output of the system towards a steady state by minimizing the performance index. LQR-invinite horizon is a special case of LQR in thecontinuous time area where the terminal time of the performance index value for infinite time and infinite outputsystem is zero. Performance index will be affected by the weighting matrix. In this paper will be discussed about the application of Particle Swarm Optimization algorithm (PSO) and Differential Evolution Algorithm (DEA) to determine the state feedback of a closed loop system and weighting matrices in the LQR to minimize performance index. PSO algorithm is a computational algorithm inspired by social behavior of flocks of birds and fishes in searching of food. While the DEA is an optimization algorithm that is adopted from evolution and genetics of organisms. Simulations of the PSO algorithm will be compared with DEA. Based on case study, DEA is faster then PSO to get convergence to the optimum solution

    Problematika Akuntansi Heritage Assets: Pengakuan, Penilaian dan Pengungkapannya dalam Laporan Keuangan (Studi Kasus pada Pengelolaan Museum Jawa Tengah Ronggowarsito)

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    This study aimed to analyze and understand the accounting problems of heritage assets: recognition, valuation and disclosure. Heritage assets is asset that has environment, culture, and nation history value. The advantage of them is not only for ideology importance and academic, but also as economic resource.The observation use case study approach. Data based on the interviews to the managers of Ronggowarsito Museum, related agencies, academics, and antiquities collector; and also the documents analysis found directly on the field. Then, relate them to the available literacy. Based on the research, it is concluded that there is not an appropriate definition to the heritage assets. The informant tends to relate it with Cultural Conservation. Besides the related parties still find some difficulties doing the same economic valuation for all kinds of heritage assets. Procurement of collection is based on the price or value on the Governor Regulation about The Standardization of Activity Cost and Honorarium of Preservation Cost and The Standardization of Supplying Goods/ Sevices Price. But, accountancy practice of heritage assets on managing Ronggowarsito Central Java Museum has appropriate to the accountancy standard as managed by government which stated in CaLK without value

    Mid-infrared emission and absorption in strained and relaxed direct bandgap GeSn semiconductors

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    By independently engineering strain and composition, this work demonstrates and investigates direct band gap emission in the mid-infrared range from GeSn layers grown on silicon. We extend the room-temperature emission wavelength above ~4.0 {\mu}m upon post-growth strain relaxation in layers with uniform Sn content of 17 at.%. The fundamental mechanisms governing the optical emission are discussed based on temperature-dependent photoluminescence, absorption measurements, and theoretical simulations. Regardless of strain and composition, these analyses confirm that single-peak emission is always observed in the probed temperature range of 4-300 K, ruling out defect- and impurity-related emission. Moreover, carrier losses into thermally-activated non-radiative recombination channels are found to be greatly minimized as a result of strain relaxation. Absorption measurements validate the direct band gap absorption in strained and relaxed samples at energies closely matching photoluminescence data. These results highlight the strong potential of GeSn semiconductors as versatile building blocks for scalable, compact, and silicon-compatible mid-infrared photonics and quantum opto-electronics

    KETERBACAAN ANALISIS DAN DISKUSI MANAJEMEN DALAM LAPORAN TAHUNAN (Studi Empiris Pada Perusahaan Manufaktur Yang Terdaftar Di Bursa Efek Indonesia Tahun 2014)

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    MD&A is the important part in the annual report, as it speaks to all stakeholders about companies performance and future plans, it should be readable and comprehensible. The main objective of this study is to determine the readability of MD&A from manufacture companies in Indonesia. The population in this study consist of all manufacture companies listed firms in Indonesia Stock Exchange in year 2014. Sampling method used is simple random sampling. A total sample of 107 companies were used in this analysis. The data is analyzed using readability index and statistic descriptive analysis. The empirical results of this study show that the MD&A are difficult to read and comprehend, it require 12,080 years of formal education before they can fully understood
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