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Identification of Noisy Utterance Speech Signal using GA-Based Optimized 2D-MFCC Method and a Bispectrum Analysis

Journal of Software Engineering and Applications 2012年第12期5卷 193-199页

作者： benyamin Kusumoputro Agus Buono Li Na Department of Computer Science Bogor Agricultural University Bogor Indonesia Department of Computer Science Tarumanagara University Jakarta Indonesia Department of Electrical Engineering Universitas Indonesia Jakarta Indonesia

One-dimensional Mel-Frequency Cepstrum Coefficients (1D-MFCC) in conjunction with a power spectrum analysis method is usually used as a feature extraction in a speaker identification system. However, as this one dimensional feature extraction subsystem shows low recognition rate for identifying an utterance speech signal under harsh noise conditions, we have developed a speaker identification system based on two-dimensional Bispectrum data that was theoretically more robust to the addition of Gaussian noise. As the processing sequence of ID-MFCC method could not be directly used for processing the two-dimensional Bispectrum data, in this paper we proposed a 2D-MFCC method as an extension of the 1D-MFCC method and the optimization of the 2D filter design using Genetic Algorithms. By using the 2D-MFCC method with the Bispectrum analysis method as the feature extraction technique, we then used Hidden Markov Model as the pattern classifier. In this paper, we have experimentally shows our developed methods for identifying an utterance speech signal buried with various levels of noise. Experimental result shows that the 2D-MFCC method without GA optimization has a comparable high recognition rate with that of 1D-MFCC method for utterance signal without noise addition. However, when the utterance signal is buried with Gaussian noises, the developed 2D-MFCC shows higher recognition capability, especially, when the 2D-MFCC optimized by Genetics Algorithms is utilized.

关键词： 2D Mel-Frequency Cepstrum Coefficients Bispectrum Hidden Markov Model Genetics Algorithms

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Trends in Breeding New Olive Varieties in Israel for Quality and Economic Management

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Agricultural Sciences 2014年第8期5卷 701-709页

作者： Shimon Lavee benyamin Avidan Giora Ben-Ari Institute of Horticulture Volcani Center ARO Bet-Dagan Israel

The domesticated olives originated based on decades of selection from the natural forest around the Mediterranean basin being one of the oldest cultivated tree crops. The requirement for new olive varieties increased markedly during the last 100 years as a result of a worldwide transformation changing from a traditional extensive to a modern intensive mechanized industry. The traditional olive cultivars still widely used are selections from the local autochthonous cultivars which are well adapted to their natural environment. However, the level of production of those is usually rather low and many of them failed to respond enough to modern intensification methods. The wild olive population is gradually diminishing in all regions thus, natural selection is not efficient enough for developing the cultivars required for the new intensive olive industry. Cross breeding between cultivars with specific characters became the basis for the required new cultivars. The genetic diversity in progenies of most olive cultivars is extremely wide and thus becomes the basic source for breeding of the needed new cultivars. However, the genetic information on olive heredity and identification of specific gene characteristics is still limited. Genomic information is required for rational choice of genitors in accordance with each breeding aim, particularly as most criteria required for the new varieties are of multi-gene nature. The availability of advanced genomic information will also serve as basis for molecular engineering when accepted for use in the olive commodity. Geographically isolated olive populations developed during generations of inbreeding in remote regions are another important genetic resource of characters required for breeding the cultivars for the new modern mechanized olive orchards. The use of molecular markers based on AFLP, SSRs, DArT and SNPs is important for the choice of genitors leading to a reduction of the progeny size required in olive breeding. Presentl

关键词： Olive Orchard Systems Breeding Genetic Markers New Cultivars

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Polymer interdigitated pillar electrostatic(PIPE)actuators

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Microsystems & Nanoengineering 2022年第1期8卷 185-192页

作者： Di Ni Ronald Heisser benyamin Davaji Landon Ivy Robert Shepherd Amit Lal School of Electrical and Computer Engineering Cornell UniversityIthacaNY 14853USA Sibley School of Mechanical and Aerospace Engineering Cornell UniversityIthacaNY 14853USA

This work reports a three-dimensional polymer interdigitated pillar electrostatic actuator that can produce force densities 5-10×higher than those of biological *** theory of operation,scaling,and stability is investigated using analytical and FEM *** actuator consists of two high-density arrays of interdigitated pillars that work against a restoring force generated by an integrated flexure *** actuator architecture enables linear actuation with higher displacements and pull-in free actuation to prevent the in-use stiction associated with other electrostatic *** pillars and springs are 3D printed together in the same *** pillars are coated with a gold-palladium alloy layer to form conductive *** space between the pillars is filled with liquid dielectrics for higher breakdown voltages and larger electrostatic forces due to the increase in the dielectric *** demonstrated a prototype actuator that produced a maximum work density of 54.6μJ/cc and an electrical-tomechanical energy coupling factor of 32%when actuated at 4000 *** device was operated for more than 100,000 cycles with no degradation in *** flexible polymer body was robust,allowing the actuator to operate even after high mechanical force impact,which was demonstrated by operation after drop *** it is scaled further,the reported actuator will enable soft and flexible muscle-like actuators that can be stacked in series and parallel to scale the resulting *** work paves the way for high-energy density actuators for microrobotic applications.

关键词： alloy electrostatic enable

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Higher Prevalence of Prostate Cancer among Veterans with Type 2 Diabetes

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Journal of Diabetes Mellitus 2017年第4期7卷 316-320页

作者： Subhashini Yaturu Nagwa benyamin Barbara Youngberg Michael Marchese Dorn VA Medical Center/USC School of Medicine Columbia SC USA

Background: Diabetes mellitus and cancer are common conditions. Based on epidemiological evidence, American Diabetes Association (ADA) and the American Cancer Society (ACS) concluded that patients with diabetes are at a higher risk for cancers in their joint position statement. That statement includes a meaningful association between cancer and diabetes;common risk factors for both;possible biological links between the two and also whether the diabetes therapy alters risk or prognosis of cancer. Additional comments included lack of association or evidence between diabetes and cancers such as lung cancer and lymphomas;and reduced risk of prostate cancer among subjects with type 2 diabetes. It was also stated that some cancers such as liver, pancreas, colon and rectum, breast, bladder and endometrial cancers. Since prevalence of diabetes is more than 25% among Veterans, our aim of this study was to evaluate the prevalence of various cancers among Veterans with type 2 diabetes at Albany, NY. Methods: In a single center, retrospective chart review study was carried out using computerized patient records, after the Institutional Review Board and Research and development review board at Veterans health administration at Stratton VA MC at Albany, New York. Using CPT codes and verification by review of clinical and laboratory information, the study was carried out. The information collected include the BMI, smoking status, duration of diabetes, medications used, other medical problems such as hypertension, atherosclerotic cardiovascular disease, various cancers;laboratory data included HbA1C, eGFR, Creatinine and lipid parameters. Results: The study identified 6777 subjects with type 2 diabetes with a mean age of 61 ± 10 and BMI of 32.6 ± 6. Total of 1046 subjects identified with cancers, after exclusion of skin cancers. The most common cancers among Veterans with type 2 DM are prostate cancer, colon cancer, bladder cancer and Lung Cancer. Other cancers include renal cell c

关键词： Diabetes Cancer Prostate Cancer Colon Cancer Kung Cancer

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Hepatitis B virus subgenotypes and basal core promoter mutations in Indonesia

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World Journal of Gastroenterology 2009年第32期15卷 4028-4036页

作者： Andi Utama Sigit Purwantomo Marlinang Diarta Siburian Rama Dhenni Rino Alvani Gani Irsan Hasan Andri Sanityoso Upik Anderiani Miskad Fardah Akil Irawan Yusuf Wenny Astuti Achwan Soewignjo Soemohardjo Syafruddin AR Lelosutan Ruswhandi Martamala benyamin Lukito Unggul Budihusodo Laurentius Adrianus Lesmana Ali Sulaiman Susan Tai Molecular Epidemiology Division Mochtar Riady Institute for NanotechnologyLippo KarawaciTangerangBanten 15810Indonesia Hepatology Division Department of Internal MedicineFaculty of MedicineUniversity of IndonesiaJakarta 10430Indonesia Center of Gastroentero-Hepatology Department of Internal MedicineFaculty of MedicineHasanuddin UniversityMakassar 90245Indonesia Department of Internal Medicine Mataram General HospitalMataram 83127Indonesia Gastroentero-Hepatology Division Department of Internal MedicineGatot Soebroto HospitalJakarta 10410Indonesia Department of Internal Medicine Siloam Hospital Lippo KarawaciTangerang Banten 15810Indonesia

AIM： To identify the distribution of hepatitis B virus （HBV） subgenotype and basal core promoter （BCP） mutations among patients with HBV-associated liver disease in Indonesia.METHODS： Patients with chronic hepatitis （CH, n =61）, liver cirrhosis （LC, n = 62）, and hepatocellular carcinoma （HCC, n = 48） were included in this study. HBV subgenotype was identified based on S or preS gene sequence, and mutations in the HBx gene including the overlapping BCP region were examined by direct sequencing.RESULTS： HBV genotype B （subgenotypes B2, B3, B4, 85 and B7） the major genotype in the samples, accounted for 75.4%, 71.0% and 75.0% of CH, LC and HCC patients, respectively, while the genotype C （subgenotypes C1, C2 and C3） was detected in 24.6%, 29.0%, and 25.0% of CH, LC, and HCC patients, respectively. Subgenotypes B3 （84.9%） and C1 （82.2%） were the main subgenotype in HBV genotype B and C, respectively. Serotype adw2 （84.9%） and adrq＋（89.4%） were the most prevalent in HBV genotype B and C, respectively. Double mutation （A1762T/G1764A） in the BCP was significantly higher in LC （59.7%） and HCC （54.2%） than in CH （19.7%）, suggesting that this mutation was associated with severity of liver disease. The T1753V was also higher in LC （46.8%）, but lower in HCC （22.9%） and CH （18.0%）, suggesting that this mutation may be an indicator of cirrhosis.CONCLUSION： HBV genotype B/B3 and C/C1 are the major genotypes in Indonesia. Mutations in BCP, such as A1762T/G1764A and T1753V, might have an association with manifestations of liver disease.

关键词： Basal core promoter mutation Hepatitis Bvirus Indonesia Liver disease Subgenotype

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A Chance to Lift Economic Cooperation

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Beijing Review 2021年第38期64卷 23-23页

作者： benyamin Poghosyan Center for Political andEconomic Strategic Studies Armenia

The Belt and Road Initiative proposed by China in 2013 ushered in a new era for international *** offers a new paradigm for mutually beneficial cooperation between participating countries based on a people-centric app... 详细信息

关键词： development. mutually Chance

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陈木法访谈录

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数学译林 2018年第1期37卷 42-53页

作者： Davar khoshnevisan Edward Waymire 欧阳顺湘杨尊明犹他大学俄勒冈州立大学不详

2016年5月9-11日，作为特邀演讲者之一，陈木法教授应邀参加在犹他大学举办的“概率论前沿会议”．陈木法是中国最杰出最有影响力的在世概率论学者之一．他是中国科学院院士、第三世界科学院院士以及美国数学会会士．他和他的学生王凤... 详细信息

2016年5月9-11日，作为特邀演讲者之一，陈木法教授应邀参加在犹他大学举办的“概率论前沿会议”．陈木法是中国最杰出最有影响力的在世概率论学者之一．他是中国科学院院士、第三世界科学院院士以及美国数学会会士．他和他的学生王凤雨一起，为Ricci（里奇）曲率有正下界的流形上拉普拉斯算子的特征值的依赖于曲率下界、流形维数和直径的精确估计发展了有力的概率方法．2005年他在施普林格出版社出版专著《特征值、不等式和遍历理论》，是他在这个深刻又有挑战性的数学领域所作卓越贡献的有力说明．陈木法教授主要在中国生活、工作，偶尔出国游历讲学．他此次行程为我们更多了解他个人以及他过去50年来在概率论领域研究的专业历程提供了机会．下面是两位会议组织者对他的访谈．

关键词：中国科学院院士访谈录第三世界科学院拉普拉斯算子概率论概率方法精确估计遍历理论

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Hepatitis B virus pre-S2 start codon mutations in Indonesian liver disease patients

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World Journal of Gastroenterology 2012年第38期18卷 5418-5426页

作者： Andi Utama Marlinang Diarta Siburian Ismail Fanany Mariana Destila Bayu Intan Rama Dhenni Tri Shinta Kurniasih Syafruddin AR Lelosutan Wenny Astuti Achwan Nasrul Zubir Arnelis benyamin Lukito Irawan Yusuf Laurentius Adrianus Lesmana Ali Sulaiman Molecular Epidemiology Division Mochtar Riady Institute for Nanotechnology Universitas Pelita Harapan Lippo Karawaci Tangerang 15810 Banten Indonesia Gastroentero-Hepatology Division Department of Internal Medicine Gatot Soebroto Hospital Jakarta 10410 Indonesia Department of Internal Medicine Mataram General Hospital Mataram 83127 Indonesia Gastroentero-Hepatology Division Department of Internal Medicine M. Djamil Hospital Padang 25127 Indonesia Department of Internal Medicine Siloam Hospital Lippo Karawaci Tangerang 15810 Banten Indonesia Faculty of Medicine Hasanuddin University Makassar 90245 Indonesia Hepatology Division Department of Internal Medicine Faculty of Medicine University of Indonesia Jakarta 10430 Indonesia

AIM: To identify the prevalence of pre-S2 start codon mutations and to assess their association with liver disease progression. METHODS: The mutations were identified by direct sequencing from 73 asymptomatic carriers, 66 chronic hepatitis (CH), 66 liver cirrhosis (LC) and 63 hepatocellular carcinoma (HCC) patients. Statistical significances were determined using Fisher's exact test, χ 2 test, and t -test analyses whenever appropriate. Pre-S mutation as a risk factor for advanced liver disease was estimated by unconditional logistic regression model adjusted with age, sex, and hepatitis B e antigen (HBeAg). P < 0.05 was considered significant. RESULTS: Mutation of the hepatitis B virus (HBV) pre-S2 start codon was found in 59 samples from 268 subjects (22.0%), with higher prevalence in patients with cirrhosis 27/66 (40.9%) followed by HCC 18/63 (28.6%), chronic hepatitis 12/66 (18.2%) and asymptomatic carriers 2/73 (2.7%) (P < 0.001). Logistic regression analysis showed that pre-S2 start codon mutation was an independent factor for progressive liver disease. Other mutations, at T130, Q132, and A138, were also associated with LC and HCC, although this was not statistically significant when adjusted for age, sex, and HBeAg. The prevalence of pre-S2 start codon mutation was higher in HBV/B than in HBV/C (23.0% vs 19.1%), whilst the prevalence of T130, Q132, and A138 mutation was higher in HBV/C than in HBV/B. The prevalence of pre-S2 start codon mutation was higher in LC (38.9%) and HCC (40.0%) than CH (5.6%) in HBeAg(+) group, but it was similar between CH, LC and HCC in HBeAg(-) group. CONCLUSION: Pre-S2 start codon mutation was higher in Indonesian patients compared to other Asian countries, and its prevalence was associated with advanced liver disease, particularly in HBeAg(+) patients.

关键词： Hepatitis B virus Pre-S2 start codon Liver disease Hepatitis B e antigen seroconversion Indonesia

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Reasons for delayed spinal cord decompression in individuals with traumatic spinal cord injuries in Iran:A qualitative study from the perspective of neurosurgeons

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Chinese Journal of Traumatology 2021年第6期24卷 356-359页

作者： Masoud SohrabiAsl Zahra Ghodsi Roya Habibi Arejan Zahra Azadmanjir Mahdi Sharif-Alhoseini Moein Khormali Maryam Shojaei Abbas Rahimiforoushani Alireza khoshnevisan Alexander R.Vaccaro Michael G.Fehlings Vafa Rahimi-Movaghar Sina Trauma and Surgery Research Center Tehran University of Medical SciencesTehranIran Rehabilitation Office State Welfare Organization of IranTehranIran Health Information Management Department Tehran University of Medical Sciences Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehranIran Department of Neurosurgery Shariati HospitalTehran University of Medical SciencesTehran Iran Department of Orthopaedics and Neurosurgery Thomas Jefferson University and the Rothman InstitutePhiladelphiaPAUSA Department of Surgery University of TorontoSenior Scientist Krembil Brain Institute and McEwen Centre for Regenerative MedicineToronto Western HospitalUniversity Health NetworkCanada Universal Scientific Education and Research Network(USERN) TehranIran Institute of Biochemistry and Biophysics University of TehranTehranIran Visiting Professor Spine ProgramUniversity of TorontoTorontoCanada Brain and Spinal Cord Injury Research Center Neuroscience InstituteTehran University of Medical SciencesTehranIran

Purpose:The median time from the event leading to the spinal cord injury(SCI)to the time of decompressive surgery is estimated to be 6.9 days in Iran,which is much longer than the proposed ideal time(less than 24 h)in published *** current qualitative study aimed to determine the reasons for the observed decompression surgery delay in Iran from the perspective of ***:This qualitative study is designed to perform content analysis on the gathered data from face-to-face semi-structured interviews with 12 Iranian ***:The findings of the current study suggest that patient-related factors constitute more than half of the codes extracted from the ***,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the main factors causing delayed spinal cord decompression in Iranian patients from the perspective of *** notable factors include delay in transferring patients to the trauma center,delay in availability of necessary equipment,and scarce medical ***:In the perspective of neurosurgeons,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the leading reasons for delayed decompressive surgery of individuals with SCI in Iran.

关键词： Spinal cord injuries Decompression Surgical Neurosurgeons Iran Qualitative research

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Effects of neurofeedback on the short-term memory and continuous attention of patients with moderate traumatic brain injury： A preliminary randomized controlled clinical trial

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Chinese Journal of Traumatology 2017年第5期20卷 278-282页

作者： Reza Rostami Payman Salamati Kourosh Karimi Yarandi Alireza khoshnevisan Soheil Saadat Zeynab Sadat Kamali Somaie Ghiasi Atefeh Zaryabi Seyed Shahab Ghazi Mir Saeid Mehdi Arjipour Mohammad Saeid Rezaee-Zavareh Vafa Rahimi-Movaghar Department of Psychology Tehran University Tehran Islamic Republic of Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Islamic Republic of Iran Department of Neurosurgery School of Medicine Shariati Hospital Tehran University of Medical Sciences TehranIran Department of Psychology Kharazmi University Tehran Islamic Republic of Iran Department of Clinical Psychology AUame Tabatabaei University Tehran Iran Students' Research Committee Baqiyatallah University of Medical Sciences Tehran Islamic Republic of Iran

Purpose： There are some studies which showed neurofeedback therapy （NET） can be effective in clients with traumatic brain injury （TBI） history. However, randomized controlled clinical trials are still needed for evaluation of this treatment as a standard option. This preliminary study was aimed to evaluate the effect of NET on continuous attention （CA） and short-term memory （STM） of clients with moderate TBI using a randomized controlled clinical trial （RCT）. Methods： In this preliminary RCT, seventeen eligible patients with moderate TBl were randomly allo- cated in two intervention and control groups. All the patients were evaluated for CA and STM using the visual continuous attention test and Wechsler memory scale-4th edition （WMS-IV） test, respectively, both at the time of inclusion to the project and four weeks later. The intervention group participated in 20 sessions of NFT through the first four weeks. Conversely, the control group participated in the same NF sessions from the fifth week to eighth week of the project. Results： Eight subjects in the intervention group and five subjects in the control group completed the study. The mean and standard deviation of participants＇ age were （26.75 ~ 15.16） years and （2Z60 ＋_ 8.17） years in experiment and control groups, respectively. All of the subjects were male. No significant improvement was observed in any variables of the visual continuous attention test and WMS-IV test between two groups （p _~ 0.05）. Conclusion： Based on our literature review, it seems that our study is the only study performed on the effect of NET on TBl patients with control group. NET has no effect on CA and STM in patients with moderate TBI. More RCTs with large sample sizes, more sessions of treatment, longer time of follow-up and different orotocols are recommended.

关键词： Neurofeedback Brain injuries Attention Short-term memory

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