scholarly journals PENGUKURAN PSNR PADA TRANSMISI VIDEO DI KANAL TERAHERTZ MENGGUNAKAN QAM MODULATION

2020 ◽  
Vol 7 (2) ◽  
pp. 154
Author(s):  
Tamara Maharani ◽  
Muhammad Agus Zainuddin ◽  
Sritrusta Sukaridhoto
Keyword(s):  
Information Exchange ◽  
Digital Data ◽  
Transmission Time ◽  
Information Communication ◽  
Quality Of Information ◽  
Amount Of Information ◽  
Qam Modulation ◽  
Speed Up ◽  
Simulation Results

<p><em>In the current era of communication has various challenges that include the intensity of information exchange more often, the amount of information carried and the speed in exchanging information. Communication is not only in the form of text and sound but also in the form of pictures and videos. This study tries to use digital data in the form of video with the aim of providing a view of the PSNR measurement simulation. The method used is modulation of QAM 64, 256, 1024 and 4096 through terahertz channels (0.1-10 THz). Simulation results show that in QAM 64 the PSNR value is 35.2 dB to 36.6 dB. The PSNR value decreases as the M-ary increases. PSNR at 256 QAM ranges from 25.9 to 26.5 dB. PSNR in QAM 1024 is stable at magnitude 16.3 to 16.5. Whereas PSNR in QAM 4096 ranged from 15.0 to 15.25. From this study shows the greater the value of PSNR, the quality of information sent is increasingly similar. In addition, the higher the M-ary, the data carried will also be large so as to speed up the transmission time.</em></p><p><em><strong>Keywords</strong></em><em>: Terahertz, QAM, PSNR, Video, Simulation</em><em><strong> </strong></em></p><p><em>Di era saat ini komunikasi memiliki berbagai tantangan yang meliputi intesitas pertukaran informasi yang lebih sering, besarnya informasi yang dibawa dan kecepatan dalam bertukar informasi. Komunikasi tidak hanya berupa text dan suara namun juga berupa gambar dan video. Penelitian ini mencoba menggunakan data digital berupa video dengan tujuan memberikan pandangan tentang simulasi pengukuran PSNR. Metode digunakan yaitu modulasi QAM 64, 256, 1024 dan 4096 melalui kanal terahertz (0.1-10 THz). Hasil simulasi menunjukkan pada QAM 64 nilai PSNR sebesar  35.2 dB hingga 36.6 dB. Nilai PSNR menurun seiring bertambahnya M-ary. PSNR pada QAM 256 </em>di rentang 25.9 hingga 26.5 dB. <em>PSNR pada QAM 1024 stabil di besaran </em>16.3 sampai 16.5. Sedangkan <em>PSNR pada QAM 4096 </em>di rentang 15.0 hingga 15.25. Dari penelitian ini menunjukkan semakin besar nilai PSNR maka kualitas informasi yang dikirimkan semakin mirip. <em>Selain itu semakin tinggi M-ary maka data yang dibawa pun juga ikut besar sehingga mempercepat waktu transimisi. </em></p><p><em><strong>Kata kunci</strong></em><em>: </em><em>Terahertz, QAM,PSNR, Video, Simulasi</em></p>

The development of definitional skill

1990 ◽  
Vol 17 (3) ◽  
pp. 697-710 ◽  
Author(s):  
Catherine E. Snow
Keyword(s):  
Foreign Language ◽  
Fifth Graders ◽  
Word Meaning ◽  
Language Performance ◽  
Quality Of Information ◽  
Amount Of Information ◽  
Formal Definitions ◽  
At Home

ABSTRACTGiving good definitions requires controlling both word meaning and definitional form. Definitions from 137 second to fifth graders (i.e. aged seven to eleven) were scored to reflect conformity to the classic Aristotelian form and quality of information provided. Comparisons among children with different backgrounds indicated that school exposure to English was strongly related to per cent formal definitions given and their quality. 63 children were also tested in French, their foreign language. Performance in French was lower than in English; exposure to French at home related to the amount of information the children provided in informal definitions, not to quality of formal definitions. The results suggest that performance on definitions is most strongly affected by opportunities to practise the required form.

The INNOVance Lexicon: Organisation of terms and concepts about construction products

2017 ◽  
Vol 44 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Maria Teresa Guaglianone ◽  
Giovanna Aracri ◽  
Elisabetta Oliveri
Keyword(s):  
Information Exchange ◽  
Classification Systems ◽  
Quality Of Information ◽  
Controlled Vocabularies ◽  
Knowledge Organization Systems ◽  
Construction Products ◽  
Collaborative Context ◽  
Knowledge Intensive ◽  
Coordination Policy

The construction sector is also a knowledge-intensive domain, in which effective and unambiguous communication and knowledge sharing are, at the same time, both essential yet difficult to accomplish. This is primarily due to the several professionals interacting and facing situations involving diverse resources, processes and activities. Each of them brings a different background and perspective, often generating poorly integrated information. Knowledge Organization Systems (KOSs) are crucial for ensuring completeness, consistency and quality of information. Despite the international trend to encourage the development and use of controlled vocabularies, especially classification systems, until recently in Italy the national coordination policy has not been effective enough. This article describes the first national attempt made, the INNOVance Lexicon that collects and organises knowledge about construction products. It combines taxonomic, terminological and semantic aspects of knowledge and it is a reference language to support information exchange and sharing in collaborative context.

scholarly journals A Wavelet-Based Multiresolution Reconstruction Method for Fluorescent Molecular Tomography

2009 ◽  
Vol 2009 ◽  
pp. 1-11 ◽  
Author(s):  
Wei Zou ◽  
Jiajun Wang ◽  
Kongpei Wu ◽  
David Dagan Feng
Keyword(s):  
Optical Properties ◽  
Reconstruction Method ◽  
Matrix Equations ◽  
Wavelet Domain ◽  
Reconstruction Process ◽  
Reference Medium ◽  
Speed Up ◽  
Computationally Expensive ◽  
Simulation Results

Image reconstruction of fluorescent molecular tomography (FMT) often involves repeatedly solving large-dimensional matrix equations, which are computationally expensive, especially for the case where there are large deviations in the optical properties between the target and the reference medium. In this paper, a wavelet-based multiresolution reconstruction approach is proposed for the FMT reconstruction in combination with a parallel forward computing strategy, in which both the forward and the inverse problems of FMT are solved in the wavelet domain. Simulation results demonstrate that the proposed approach can significantly speed up the reconstruction process and improve the image quality of FMT.

scholarly journals A High Performance Cloud-Based Protein-Ligand Docking Prediction Algorithm

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Jui-Le Chen ◽  
Chun-Wei Tsai ◽  
Ming-Chao Chiang ◽  
Chu-Sing Yang
Keyword(s):  
Computer Science ◽  
Information Exchange ◽  
High Performance ◽  
Pharmaceutical Research ◽  
Computation Time ◽  
Ligand Docking ◽  
Prediction Algorithm ◽  
Exchange Operator ◽  
Simulation Results

The potential of predicting druggability for a particular disease by integrating biological and computer science technologies has witnessed success in recent years. Although the computer science technologies can be used to reduce the costs of the pharmaceutical research, the computation time of the structure-based protein-ligand docking prediction is still unsatisfied until now. Hence, in this paper, a novel docking prediction algorithm, named fast cloud-based protein-ligand docking prediction algorithm (FCPLDPA), is presented to accelerate the docking prediction algorithm. The proposed algorithm works by leveraging two high-performance operators: (1) thenovelmigration (information exchange) operator is designed specially for cloud-based environments to reduce the computation time; (2) theefficientoperator is aimed at filtering out the worst search directions. Our simulation results illustrate that the proposed method outperforms the other docking algorithms compared in this paper in terms of both the computation time and the quality of the end result.

scholarly journals PROCESSING OF SYNCHRONOUS PHASOR MEASUREMENTS BY FUZZY LOGIC METHODS IN THE CASE OF  CYBERATTACKS ON INFORMATION-COMMUNICATION INFRASTRUCTURE OF A CYBER-PHYSICAL ELECTRIC POWER SYSTEM

2020 ◽  
Author(s):  
И.Н. Колосок ◽  
Л.А. Гурина
Keyword(s):  
Fuzzy Logic ◽  
Power Systems ◽  
Electric Power ◽  
Electric Power System ◽  
Information Communication ◽  
Quality Of Information ◽  
Communication Infrastructure ◽  
Phasor Measurements ◽  
Processing Information

Применение интеллектуальных и цифровых технологий в системах измерения, передачи и обработки информации, являющихся частью информационно-коммуникационной инфраструктуры электроэнергетической системы (ЭЭС), направлено на повышение эффективности управления ЭЭС. Вместе с тем, при цифровизации ЭЭС отмечен рост уязвимостей к кибератакам. В связи с этим возрастает актуальность обеспечения задач управления в условиях кибератак своевременной, полной и достоверной информацией. Предложен алгоритм обработки синхронизированных векторных измерений на основе вейвлет-анализа и нечеткой логики, повышающий качество информации, используемой в дальнейшем при оценивании состояния ЭЭС. The use of intelligent and digital technologies in systems for measuring, transmitting, and processing information, which are part of the information-communication infrastructure, is aimed at improving the efficiency of EPS management. At the same time, with the EPS digitalization, there has been a rise in vulnerabilities to cyberattacks. In this context, the urgency of providing timely, complete, and reliable data to perform control in the case of cyberattacks is increasing. We propose an algorithm to process synchronized vector measurements based on wavelet analysis and fuzzy logic, which improves the quality of information used in the state estimation of electric power systems.

scholarly journals DICR: AI Assisted, Adaptive Platform for Contract Review

2020 ◽  
Vol 34 (09) ◽  
pp. 13638-13639
Author(s):  
Dan G. Tecuci ◽  
Ravi Palla ◽  
Hamid R. Motahari Nezhad ◽  
Nishchal Ahuja ◽  
Alex Monteiro ◽  
...  
Keyword(s):  
Natural Language ◽  
Internal Structure ◽  
Quality Of Information ◽  
Text Documents ◽  
Report Generation ◽  
Speed Up ◽  
Scanned Image ◽  
Digital Formats ◽  
Document Review

In the regular course of business, companies spend a lot of effort reading and interpreting documents, a highly manual process that involves tedious tasks, such as identifying dates and names or locating the presence or absence of certain clauses in a contract. Dealing with natural language is complex and further complicated by the fact that these documents come in various formats (scanned image, digital formats) and have different degrees of internal structure (spreadsheets, invoices, text documents). We present DICR, an end-to-end, modular, and trainable system that automates the mundane aspects of document review and allows humans to perform the validation. The system is able to speed up this work while increasing quality of information extracted, consistency, throughput, and decreasing time to decision. Extracted data can be fed into other downstream applications (from dashboards to Q&A and to report generation).

scholarly journals Bizalom és vállalati teljesítmény. A bizalom szerepe az aszimmetrikus információk minőségének vállalati észlelésében és azok vezetői döntéshozatalban való felhasználásában = Trust and corporate performance

2015 ◽  
pp. 2-11
Author(s):  
Tamara Keszey
Keyword(s):  
Indirect Effect ◽  
Information Exchange ◽  
Direct Relationship ◽  
Information Use ◽  
Dyadic Relationships ◽  
Market Information ◽  
Organizational Relationships ◽  
Exchange Relationships ◽  
Quality Of Information

A kutatás azt a kérdéskört vizsgálja, hogyan járul hozzá a bizalom a vállalatok piaci teljesítményéhez. A vállalatok azon képessége, hogy felhasználják a rendelkezésükre álló piaci információkat nehezen másolható, tartós versenyelőnyt biztosít. A marketingmenedzserek a piaci információk hitelességét nehezen tudják objektív módon megítélni, mivel azokat jellemzően mások gyűjtik és rendszerezik számukra. A szerző kutatásában a menedzserek vállalaton belüli és vállalaton kívüli piaci informálódást célzó kapcsolatai esetén modellezte és empirikusan tesztelte a bizalom hatásait. Eredményei szerint a bizalom a vállalaton belüli és vállalaton kívüli kapcsolatok esetében is fontos mozgatórugója az információfelhasználásnak, jóllehet közvetlenül nincs hatással arra. Minél jobban bízik a döntéshozó az információ forrásában, annál jobb minőségűnek fogja észlelni a tőle származó információt. Az információ észlelt minősége meghatározza, hogy arra támaszkodnak-e a vezetők a döntések meghozatalánál. Azok a marketingmenedzserek, akik képesek bizalmi kapcsolatok kiépítésére, szélesebb körű, hiteles piaci információkra támaszkodhatnak a döntéshozatal során, amely hozzájárul a vállalat piaci teljesítményéhez. ____ We have limited knowledge on the potential pattern similarities/differences of trust’s role that may exist in information use obtained through intra- and extra-organizational relationships. This study addresses this question by investigating how trust leads to information use. Data from 338 intra-organizational and a sub-ample of 158 inter-organizationaldyadic information exchange relationships showed that trust is an important driver of the utilization of market information in both cases. Trust has no direct relationship to information use, instead has a strong indirect effect through a mediator, perceived quality of information. The effects of trustontheuse of information obtained throughinter- and extra-organizational dyadic relationships proved to be similar.

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