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Auto Configuration Module for Logstash in Elasticsearch Ecosystem
Ahmed, Hammad,Park, Yoosang,Choi, Jongsun,Choi, Jaeyoung Korea Information Processing Society 2018 한국정보처리학회 학술대회논문집 Vol.2018 No.10
Log analysis and monitoring have a significant importance in most of the systems. Log management has core importance in applications like distributed applications, cloud based applications, and applications designed for big data. These applications produce a large number of log files which contain essential information. This information can be used for log analytics to understand the relevant patterns from varying log data. However, they need some tools for the purpose of parsing, storing, and visualizing log informations. "Elasticsearch, Logstash, and Kibana"(ELK Stack) is one of the most popular analyzing tools for log management. For the ingestion of log files configuration files have a key importance, as they cover all the services needed to input, process, and output the log files. However, creating configuration files is sometimes very complicated and time consuming in many applications as it requires domain expertise and manual creation. In this paper, an auto configuration module for Logstash is proposed which aims to auto generate the configuration files for Logstash. The primary purpose of this paper is to provide a mechanism, which can be used to auto generate the configuration files for corresponding log files in less time. The proposed module aims to provide an overall efficiency in the log management system.
Riemannian data preprocessing in machine learning to focus on QCD color structure
Hammad Ahmed,Park Myeonghun 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.83 No.4
Identifying the quantum chromodynamics (QCD) color structure of processes provides additional information to enhance the reach for new physics searches at the large Hadron collider (LHC). Analyses of QCD color structure in the decay process of a boosted particle have been spotted as information becomes well localized in the limited phase space. While these kinds of a boosted jet analyses provide an efcient way to identify the color structure, the constrained phase space reduces the number of available data, resulting in a low signifcance. In this letter, we provide a simple but a novel data preprocessing method using a Riemann sphere to utilize a full phase space by decorrelating QCD structure from kinematics. We can achieve statistical stability by enlarging the size of testable data set with focusing on QCD structure efectively. We demonstrate the power of our method with the fnite statistics of the LHC Run 2. Our method is complementary to conventional boosted jet analyses in utilizing QCD information over a wide range of a phase space.
Abd Elaziz Sulieman Ahmed Ishag,Azhari Omer Abdelbagi,Ahmed Mohammed Ali Hammad,Elsiddig Ahmed Elmustafa Elsheikh,Osama Elgilani Elsaid,허장현 한국응용생명화학회 2017 Applied Biological Chemistry (Appl Biol Chem) Vol.60 No.3
Biodegradation of endosulfan (a and b) and pendimethalin by Bacillus safensis strain FO-36bT, Bacillus subtilis subsp. inaquosorum strain KCTC 13429T and Bacillus cereus strain ATCC14579T isolated from pesticides- polluted soil was studied in mineral salt medium. Endosulfan and pendimethalin were incubated with the three bacterial strains with samples drawn at various intervals for GC analysis. Representative samples were subject to GC–MS analysis. The loss in the initial concentrations, 0.663 mM (a endosulfan), 0.319 mM (b endosulfan) and 1.423 mM (pendimethalin), was monitored and used to compute the half-lives following biphasic model. Removal percentage of endosulfan and pendimethalin in the media inoculated with the bacterial strains ranged from 24 to 95% (a endosulfan), 21–91% (b endosulfan) and 51–97% (pendimethalin), respectively. Despite the significant decrease in starting material in B. safensis cultures, no metabolites were detected, whereas two major metabolites of endosulfan, 1,2,3,4,7,7-hexachloro-5,6- dihydroxybicyclo{2.2.1}-2-heptene and 1,2,3,4,7,7-hexachloro- formaldehyde-6-methylbicyclo{2.2.1}-2-heptene, were detected in the B. subtilis cultures, and one metabolite of pendimethalin metabolite; N-(1-ethylpropyl)-3-methyl- 2, 6-diaminobenzine, was detected in the B. cereus culture. Generally, the result indicates the potential capability of these microorganisms in complete mineralization of endosulfan and pendimethalin. Based on half-lives, the efficiency of bacterial strains can be ordered as follows: B. subtilis[B. cereus[B. safensis for endosulfan and B. cereus[B. safensis[B. subtilis for pendimethalin.
Ahmed Fawzi Otoom,Emad E. Abdallah,Maen Hammad 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.2
Recently, there has been greater attention to the use of classifier systems in medical diagnosis. Medical diagnostic tools provide automated procedures for objective decisions by making use of quantitative measures and machine learning techniques. These tools are effective and helpful for medical experts to diagnose diseases. One of such diseases is breast cancer which is the second largest cause of cancer deaths among women. To build an intelligent tool, it is very important to have an effective set of features. Two types of feature sets have been commonly implemented for the purpose of breast cancer diagnosis: image shape-based features and microarray gene expression data. Both types of feature sets have been widely implemented; however, there has been no work that directly compared the classification performance of these two feature sets. In this paper, we intensively review related works that used both types of feature sets and we also review the implemented machine learning algorithms. Moreover, we run extensive experiments to compare the classification performance of the aforementioned feature sets. Our results show that the image shape-based features are more discriminative for breast cancer classification when tested with ten-fold cross validation. To check the robustness of the best performing feature set, we further examine it with five-fold cross validation and with a variety of generative classification algorithms.
EFFECT OF CROSSWINDS ON THE AERODYNAMICS OF TWO PASSENGER CARS CROSSING EACH OTHER
Ahmad Hammad,Tao Xing,Ahmed Abdel-Rahim,Vibhav Durgesh,John C. Crepeau 한국자동차공학회 2019 International journal of automotive technology Vol.20 No.5
The impact of aerodynamics on vehicle safety during crossing of passenger cars is investigated, in the absence and presence of 30o crosswind. Three-dimensional, unsteady computational fluid dynamics (CFD) simulations were used to simulate these maneuvers. The vortical structures surrounding one car in the case without crosswind were analyzed, establishing the connection between force and moment fluctuations pre-interaction and the shedding frequency of these vortices. The forces and moments acting on a passenger car during a crossing maneuver may change by up to 43 %, with the maximum change associated with the windward car in the presence of crosswind. However, the duration of this increase in forces is at most 0.01 s, which will not affect the stability of vehicles under normal conditions. The presence of crosswind increased the rate of fluctuation of forces and moments. Wind tunnel experimental results are in good agreement with the simulations, and the data available in literature. The analysis results do not show the necessity of enacting new safety policies on highways, but future parametric studies are needed to fully investigate the impact of different crosswind speeds and directions, the impact of discrepancy in vehicles sizes, and different vehicle lateral separating distances during crossing and overtaking.
Sclerosing encapsulating peritonitis after living-donor liver transplantation
Vusal Aliyev,Shintaro Yagi,Ahmed Hammad,Amr Badawy,Yudai Sasaki,Yuki Masano,Gen Yamamoto,Naoko Kamo,Kojiro Taura,Hideaki Okajima,Toshimi Kaido,Shinji Uemoto 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.2
Sclerosing encapsulating peritonitis (SEP), or abdominal cocoon is a rare cause of intestinal obstruction, and still etiology remains unknown. We report a series of 4 patients with abdominal cocoon, and all the 4 patients had previously undergone living-donor liver transplantation (LDLT). There was no evidence of SEP before and during LDLT. At the time of diagnosis of SEP, 3 out of 4 patients had ascites. First and fourth patients had multiple episodes or attacks of cholangitis, which were managed by percutaneous transhepatic biliary drainage and hepaticojejunostomy, respectively. All 4 patients presented with intestinal obstruction and 3 of them underwent a successful operation. The fourth patient died due to liver failure and complications of the SEP. The first 3 patients are doing well without SEP recurrence. Our experience suggest that the prognosis of SEP is poor in patients with poor graft liver functions after LDLT.
Copper Complexes of Some Amino Acid Derivatives of Substituted Coumarilic Acid
Ibrahim, Tarek M.,Shabana, Ahmed A.,Hammad. Hamdy A. The Pharmaceutical Society of Korea 1992 Archives of Pharmacal Research Vol.15 No.2
A series of copper complexes of some amino acid derivatives of 6-methoxy 3-methyl-coumarilic acid were prepared. The infrared, visible spectra and magnetic susceptibility of these compounds were reported. All copper complexes were foundt to have antimicrobial activity against gram-positive bacteria only.
Vusal Aliyev,Kentaro Yasuchika,Ahmed Hammad,Tetsuya Tajima,Ken Fukumitsu,Koichiro Hata,Hideaki Okajima,Shinji Uemoto 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.2
Intraductal papillary neoplasm of the bile duct (IPNB) is a rare variant of bile duct tumors characterized by papillary growth within the bile duct lumen and recognized precursor of invasive carcinoma. IPNB was detected incidentally in a 60-year-old woman during check up. Radiologic images revealed a huge cystic mass with papillary projection and markedly dilated bile ducts. Biopsies revealed high-grade IPNB. Cholangioscopy detected a connection between the right posterior bile duct and cyst lumen with epithelial dysplasia of the bile duct. Right posterior sectional duct opened in the left hepatic duct. Consequently, right trisectionectomy and extrahepatic bile duct resection were conducted. Histological studies revealed intraductal papillary neoplasm with high-grade intraepithelial neoplasia (carcinoma in situ). IPNB patients without distant metastases are candidates for surgery and complete resection should be conducted to achieve long-term survival.