• International Journal of Computer Science & Network Security
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• 제24권7호
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• pp.195-201
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• 2024

With the Covid-19(Corona Virus) spread all around the world, people are using this propaganda and the desperate need of the citizens to know the news about this mysterious virus by spreading fake news. Some Countries arrested people who spread fake news about this, and others made them pay a fine. And since Social Media has become a significant source of news, .there is a profound need to detect these fake news. The main aim of this research is to develop a web-based model using a combination of machine learning algorithms to detect fake news. The proposed model includes an advanced framework to identify tweets with fake news using Context Analysis; We assumed that Natural Language Processing(NLP) wouldn't be enough alone to make context analysis as Tweets are usually short and do not follow even the most straightforward syntactic rules, so we used Tweets Features as several retweets, several likes and tweet-length we also added statistical credibility analysis for Twitter users. The proposed algorithms are tested on four different benchmark datasets. And Finally, to get the best accuracy, we combined two of the best algorithms used SVM ( which is widely accepted as baseline classifier, especially with binary classification problems ) and Naive Base.

• 대한전자공학회논문지SD
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• 제40권10호
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• pp.45-51
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• 2003

본 논문에서는 2-패턴 테스트를 고려한 스캔 기반 BIST 구조를 제안한다. 제안하는 BIST는 STUMPS 구조론 기반으로 하고 있다. STUMPS 구조는 테스트 생성기로 선형 귀환 시프트 레지스터(LFSR)를 사용하고, 응답 압축기로는 다중 입력 시프트 레지스터(MISR), 그리고 다중 스캔 패스 구성에는 시프트 레지스터 래치(SRL)을 사용한다. 제안하는 BIST 구조에서는 degenerate MISR이 SRL 채널을 구성하도록 하여, STUMPS 기법에 비하여 원래 회로에 부가되는 BIST 회로의 크기를 줄이고 전체 시스템의 성능에 거의 영향을 주지 않도록 한다. 클럭 당 테스트와 스캔 당 테스트가 모두 지원되는 구조로 설계되며, 특히 스캔 당 테스트에서 스캔 데이터의 회로에 대한 영향을 억제하여 회로의 전력 소모를 크게 줄일 수 있다. ISCAS 89 벤치마크 회로에 대한 실험 결과로부터, SRL 채널 내 데이터의 해밍 거리를 고려하여 제안된 BIST가 경로 지연 고장의 검출에도 적용될 수 있음을 확인한다.

• International Journal of Computer Science & Network Security
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• 제21권12호
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• pp.257-263
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• 2021

Though many have studied choosing one of the alternative ways to reach a destination, the factors such as average road speed, distance, and number of traffic signals, traffic congestion, safety, and services still presents an indisputable challenge. This paper proposes two approaches: Appropriate membership function and ambiguous rule-based approach. It aims to tackle the route choice problem faced by almost all drivers in any city. It indirectly helps in tackling the problem of traffic congestion. The proposed approach considers the preference of each driver which is determined in a flexible way like a human and stored in the driver profile. These preferences relate to the criteria for evaluating each candidate route, considering the average speed, distance, safety, and services available. An illustrative case study demonstrates the added value of the proposed approach compared to some other approaches.

• The Plant Pathology Journal
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• 제36권1호
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• pp.11-28
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• 2020

Faba bean (Vicia faba L.) is one of the most important legume crops in Egypt. However, production of faba bean is affected by several diseases including fungal diseases. Fusarium wilt incited by Fusarium oxysporum Schlecht. was shown to be the most common wilt disease of faba bean in Assiut Governorate. Evaluation of 16 faba bean genotypes for the resistance to Fusarium wilt was carried out under greenhouse conditions. Three molecular marker systems (inter-simple sequence repeat [ISSR], sequence related amplified polymorphism [SRAP], and simple sequence repeat [SSR]) and a biochemical marker (protein profiles) were used to study the genetic diversity and detect molecular and biochemical markers associated with Fusarium wilt resistance in the tested genotypes. The results showed that certain genotypes of faba bean were resistant to Fusarium wilt, while most of the genotypes were highly susceptible. The percentage of disease severity ranged from 32.83% in Assiut-215 to 64.17% in Misr-3. The genotypes Assiut-215, Roomy-3, Marut-2, and Giza2 were the most resistant, and the genotypes Misr-3, Misr-1, Assiut-143, Giza-40, and Roomy-80 performed as highly susceptible. The genotypes Assiut-215 and Roomy-3 were considered as promising sources of the resistance to Fusarium wilt. SRAP markers showed higher polymorphism (82.53%) compared with SSR (76.85%), ISSR markers (62.24%), and protein profile (31.82%). Specific molecular and biochemical markers associated with Fusarium wilt resistance were identified. The dendrogram based on combined data of molecular and biochemical markers grouped the 16 faba bean genotypes into three clusters. Cluster I included resistant genotypes, cluster II comprised all moderate genotypes and cluster III contained highly susceptible genotypes.

• Journal of applied mathematics & informatics
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• 제27권1_2호
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• pp.275-289
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• 2009

In this paper, we investigate the global behavior of the difference equation $x_{n+1}\;=\;\frac{a+bx_{n-1}}{A+Bx^k_n}$, n=0,1,..., where a,b,$B\;{\in}\;[0,\infty)$ and A, $k\;{\in}\;(0,\infty)$ with non-negative initial conditions.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 춘계학술대회 논문집
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• pp.28-30
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• 2006

인접효과는, SWIR 데이터 상에 혼선 현상이 명백히 나타나지만, 본토와 반도의 해안지역에서 ASTER센서의 VNIR과 SWIR 데이터를 이용해서 논의된다. 이 분석의 목적은 정교한 스케일에서 대기와 해양환경의 광 특성을 이끌어 내기 위해서이다. 에어로졸 모델은 dust-like model을 따른다. Terra 위성 의 ASTER와 MISR은 이 모델을 적용한다. 데이터는 2000년 7월 10일 GMT1.55, 나고야 근처의 Atsuml 반도 ($34^{\underline{\circ}}40'N,\;134^{\underline{\circ}}00'E$) 에서 얻었다. VNIR 공간 분해능은 15m, SWIR은 30m이다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제13권3호
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• pp.259-262
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• 2013

Multi-site testing is considered as a solution to reduce test costs. This paper presents a new channel sharing architecture that enables I/O pins to share automatic test equipment (ATE) channels using simple circuitry such as tri-state buffers, AND gates, and multiple-input signature registers (MISR). The main advantage of the proposed architecture is that it is implemented on probe cards and does not require any additional circuitry on a target device under test (DUT). In addition, the proposed architecture can perform DC parametric testing of the DUT such as leakage testing, even if the different DUTs share the same ATE channels. The simulation results show that the proposed architecture is very efficient and is applicable to both wafer testing and package testing.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1957-1958
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• 2008

The Logic Built In Self Test (LBIST) technique is substantially applied in chip design in most many semiconductor company in despite of unavoidable overhead like an increase in dimension and time delay occurred as it used. Currently common LBIST software uses the MISR (Multiple Input Shift Register) However, it has many considerations like defining the X-value (Unknown Value), length and number of Scan Chain, Scan Chain and so on for analysis of result occurred in the process. So, to solve these problems, common LBIST software provides the solution method automated. Nevertheless, these problems haven't been solved automatically by Tri-state Bus in logic circuit yet. This paper studies the simulator and algorithm that judges whether Tri-state Bus lines is the circuit which have X-value or One-hot Value after presuming the control signal of the lines which output X-value in the logic circuit to solve the most serious problems.

• Journal of information and communication convergence engineering
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• 제8권4호
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• pp.433-436
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• 2010

In this paper, we presented a ciphering method whose target data is any kind of digital bit-stream. It uses a chaotic system as the main encrypting tool, MISR (Multi-Input Signature Register), and shift-and-rotation function, all of which are exclusive-ORed with the plaintext. Also, it incorporates a cipher text feedback mode such that part of the previously ciphered data is fed back to encrypt the current data. The encryption block size and the amount of feedback data are different at each ciphering operation. Experimental results with the image/video date showed that this method has enough speed and encryption effect with negligible latency time. Thus, we are expecting it to have various application areas that need high speed stream ciphering with high security level.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
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• pp.232-235
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• 2006

Using 30 days of hourly visible channel data and DIScrete Ordinate Radiative Transfer (DISORT) model (6S), Aerosol optical depth (AOD) at $0.55{\mu}m$ was retrieved over the East Asia. In contrast with the AOD retrieval using low-earth-orbit satellites such as MODIS (Moderate-Res olution Spectroradiometer) or MISR (Multiangle Imaging SpectroRadiometer), this algorithm with geostationary satellite can improve the monitoring of AOD without the limitation of temporal resolution. Due to the limited number of channels in the conventional meteorological imager onboard the geostationary satellite, an AOD retrieval algorithm utilizing a single visible channel has been introduced. This single channel algorithm has larger retrieval error of AOD than other multiple-channel algorithm due to errors in surface reflectance and atmospheric property. In this study, the effects of manifold atmospheric and surface properties on the retrieval of AOD from the geostationary satellite, are investigated and compared with the AODs from AERONET and MODIS. To improve the accuracy of retrieved AOD, efforts were put together to minimize uncertainties through extensive sensitivity tests. This algorithm can be utilized to retrieve aerosol information from previous geostationary satellite for long-term climate studies.