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Heart sound feature extraction and classification using autoregressive power spectral density (AR-PSD) and statistics features

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AIP Conference Proceedings 2016年第1期1755卷

作者： Domy Kristomo Risanuri Hidayat Indah Soesanti Adi Kusjani 1Department of Electrical Engineering and Information Technology Faculty of Engineering Gadjah Mada University Jalan Grafika No. 2 Yogyakarta 55281 Indonesia 2Study Program of Computer Engineering STMIK AKAKOM of Yogyakarta Jalan Raya Janti 143 Karang Jambe Yogyakarta 55198 Indonesia

Heart auscultation is a screening method done by listening using a stethoscope for early diagnosis of heart disease, it is low cost and non-invasive, but it has a limitation of human hearing. This paper presents a noise-robust feature extraction method by combining and selecting a heart sound (HS) feature in time and frequency domain. Wavelet decomposition (WD) is used for noise removal. Features are extracted by AR-PSD and used as inputs for classification. The nine types of abnormal HS that were taken from Michigan Heart Sound Database were classified into nine categories. In this research, statistics features in time and frequency domain are used as additional features. Correlation-based Feature Selection (CFS) is used to select the best feature among 13 features extracted. The performance of a new feature set is called Feature Set 3 compared to CFS. The result shows that the proposed feature set achieves the highest level of accuracy.

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Data rate of connections in performing packet delivery of Wireless Mesh Network using Hybrid Wireless Mesh Protocol and Optimized Link State Routing protocol 1

Data rate of connections in performing packet delivery of Wi...

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2014 1st International Conference on Information Technology, Computer, and Electrical engineering, ICITACEE 2014

作者： Putra, Alexander William Setiawan Suhartomo, Antonius Faculty of Engineering Study Program of Electrical Engineering President University Bekasi Indonesia

ISBN: (纸本)9781479964314

Wireless Mesh Network (WMN) relies in routing protocols for route discovery from sender to receiving nodes. There are two routing protocols that are evaluated: Hybrid Wireless Mesh Protocol (HWMP) and Optimized Link State Routing (OLSR). Packet delivery is very crucial in telecommunication. Data rate of connections relate closely with the performance of packet delivery in telecommunication especially WMN. HWMP and OLSR have different mechanisms of route discovery which are affected by the changes of data rate of connections and can affect the packet delivery of data. This experiment focuses in evaluating the performance of both protocols under different conditions of data rate of connections. The objective of this experiment is to evaluate the performance of both protocols and find the relevancy between the results of simulations and theories of the mechanism of both protocols. All of the simulations are done with using Network Simulator Version 3. The simulations are done for more than 100 times in order to get the consistency of the results of simulations and to evaluate the natural behaviors of both protocols. © 2014 IEEE.

关键词： Routing protocols

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Some contributions to the behavior of piled-rafts made up by self-drilling piles founded in a tropical soil of Brazil

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Electronic Journal of Geotechnical engineering 2014年第Z5期19卷 17181-17194页

作者： Mendoza, Cristhian C. da Cunha, Renato Ruge, Juan Carlos Lizcano, A. University Piloto of Colombia Faculty of Engineering Civil Engineering graduation program Bogotá Colombia University of Brasília Department of Civil Engineering Brasília - DF Brazil University of the Andes Canada

This work presents the mechanical behavior of a piled-groups and piled-rafts constructed with self-drilling piles and founded in the "porous" clayey soil of the Federal District in Brazil. At a first moment, characterization test, field tests (Standard Penetration Test and Flat Dilatometer Test) and triaxial tests were applied to the soil deposit to obtain its mechanical behavior. The hypoplastic constitutive model that considers soil structure was tested to assess if the model can describe the clay behavior. Moreover, the mechanical behavior of the piled group and of the piled-raft foundation was validated by means of static load tests performed in the experimental field of a private foundation company in the region. By using the collected data, finite element simulations (FEM) were performed using the Abaqus software. The chosen model was implemented to describe the behavior of the soil in the Federal District. Simulated results allowed the establishment of the ultimate load of the foundation systems;the stresses generated and settlement mechanisms;and the contribution of the raft in the piledraft systems. The results and their direct comparison allowed the generation of knowledge of academic and practical interest to those involved with the practical design, the construction or the investigation of such foundation systems. © 2015 ejge.

关键词： Piles

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Gene expression imputation across multiple brain regions provides insights into schizophrenia risk (vol 51, pg 659, 2019)

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NATURE GENETICS 2019年第6期51卷 1068-1068页

作者： Huckins, Laura M. Dobbyn, Amanda Ruderfer, Douglas M. Hoffman, Gabriel Wang, Weiqing Pardinas, Antonio F. Rajagopal, Veera M. Als, Thomas D. Nguyen, Hoang T. Girdhar, Kiran Boocock, James Roussos, Panos Fromer, Menachem Kramer, Robin Domenici, Enrico Gamazon, Eric R. Purcell, Shaun Demontis, Ditte Borglum, Anders D. Walters, James T. R. O'Donovan, Michael C. Sullivan, Patrick Owen, Michael J. Devlin, Bernie Sieberts, Solveig K. Cox, Nancy J. Im, Hae Kyung Sklar, Pamela Stahl, Eli A. Pamela Sklar Division of Psychiatric Genomics Icahn School of Medicine at Mount Sinai New York NY USA Department of Genetics and Genomics Icahn School of Medicine at Mount Sinai New York NY USA Department of Psychiatry Icahn School of Medicine at Mount Sinai New York NY USA Icahn Institute for Genomics and Multiscale Biology Icahn School of Medicine at Mount Sinai New York NY USA Vanderbilt University Medical Center Nashville TN USA MRC Centre for Neuropsychiatric Genetics and Genomics Cardiff University Cardiff UK Department of Biomedicine Aarhus University Aarhus Denmark The Lundbeck Foundation Initiative for Integrative Psychiatric Research iPSYCH Denmark Center for Integrative Sequencing Aarhus University Aarhus Denmark Department of Human Genetics David Geffen School of Medicine University of California Los Angeles Los Angeles CA USA Human Brain Collection Core National Institute of Mental Health Bethesda MD USA Laboratory of Neurogenomic Biomarkers Centre for Integrative Biology (CIBIO) University of Trento Trento Italy Clare Hall University of Cambridge Cambridge UK University of North Carolina at Chapel Hill Chapel Hill NC USA Karolinska Institutet Stockholm Sweden Department of Psychiatry University of Pittsburgh Pittsburgh PA USA Systems Biology Sage Bionetworks Seattle WA USA Section of Genetic Medicine Department of Medicine University of Chicago Chicago IL USA Integrated Technology Research Laboratories Pharmaceutical Research Division Takeda Pharmaceutical Company Limited Fujisawa Japan Neuropsychiatry Section Department of Psychiatry Perelman School of Medicine University of Pennsylvania Philadelphia PA USA Neuropsychiatric Signaling Program Department of Psychiatry Perelman School of Medicine University of Pennsylvania Philadelphia PA USA Psychiatry JJ Peters Virginia Medical Center Bronx NY USA Department of Neuroscience Icahn School of Medicine at Mount Sinai New York New York NY USA Friedman Brain Institute

Transcriptomic imputation approaches combine eQTL reference panels with large-scale genotype data in order to test associations between disease and gene expression. These genic associations could elucidate signals in complex genome-wide association study (GWAS) loci and may disentangle the role of different tissues in disease development. We used the largest eQTL reference panel for the dorso-lateral prefrontal cortex (DLPFC) to create a set of gene expression predictors and demonstrate their utility. We applied DLPFC and 12 GTEx-brain predictors to 40,299 schizophrenia cases and 65,264 matched controls for a large transcriptomic imputation study of schizophrenia. We identified 413 genic associations across 13 brain regions. Stepwise conditioning identified 67 non-MHC genes, of which 14 did not fall within previous GWAS loci. We identified 36 significantly enriched pathways, including hexosaminidase-A deficiency, and multiple porphyric disorder pathways. We investigated developmental expression patterns among the 67 non-MHC genes and identified specific groups of pre- and postnatal expression.

关键词： Gene expression Genome-wide association studies Schizophrenia Transcriptomics

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Evaluation of the Performance of Different Damage Indicators in Railway Bridges

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Procedia engineering 2015年 114卷 746-753页

作者： Vinicius Alves Andreia Meixedo Diogo Ribeiro Rui Calçada Alexandre Cury Post-Graduate Program in Civil Engineering Federal University of Ouro Preto Ouro Preto Brazil Faculty of Engineering University of Porto Porto Portugal School of Engineering Polytechnic of Porto Porto Portugal Departament of Applied and Computational Mechanics Federal University of Juiz de Fora Juiz de Fora Brazil

This article describes a damage identification methodology based on a genetic algorithm and its application to the numerical model of a railway bridge. The identification method is based on an iterative process that in each iteration compares the values of the bridge's dynamic response for a test damage scenario with the response values for a reference damage scenario. The introduction of damage to the test numerical model is based on the modification of a preselected numerical parameter values. The genetic algorithm allows the identification of damage by minimizing the residue of an objective function constructed from the responses of the test and reference model, and based on the so-called damage indicators. In this study are defined and tested damage indicators based on modal parameters (frequencies and vibration modes) in parameters built from the modal parameters (modal curvatures and flexibility curvatures), and in dynamic responses under action of impulsive loads from frequency response functions (FRFs). The proposed methodology for identifying damage was tested based on a two-dimensional numerical finite element model of a railway bridge including the railway track. The results allowed evaluating the efficiency and reliability of the methodology and of the damage indicators which, in most situations, showed potential in the detection, location and quantification of the severity of the damage.

关键词： Damage identification iterative method genetic algorithm damage indicators railway bridges.

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Mapping of earthquakes vulnerability area in Papua

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AIP Conference Proceedings 2016年第1期1730卷

作者： Muhammad Fawzy Ismullah M. Muh. Altin Massinai 1Master Program Geophysical Engineering Faculty of Mining and Petroleum Engineering (FTTM) Bandung Institute of Technology (ITB) 10 th Ganesha Street Bandung 40116 West Java INDONESIA 2Geophysics Program Study Faculty of Mathematics and Natural Sciences Hasanuddin University (UNHAS) Perintis Kemerdekaan Km. 10 Street Makassar 90245 South Sulawesi INDONESIA

Geohazard is a geological occurrence which may lead to a huge loss for human. A mitigation of these natural disasters is one important thing to be done properly in order to reduce the risks. One of the natural disasters that frequently occurs in the Papua Province is the earthquake. This study applies the principle of Geospatial and its application for mapping the earthquake-prone area in the Papua region. It uses earthquake data, which is recorded for 36 years (1973-2009), fault location map, and ground acceleration map of the area. The earthquakes and fault map are rearranged into an earthquake density map, as well as an earthquake depth density map and fault density map. The overlaid data of these three maps onto ground acceleration map are then (compiled) to obtain an earthquake unit map. Some districts area, such as Sarmi, Nabire, and Dogiyai, are identified by a high vulnerability index. In the other hand, Waropen, Puncak, Merauke, Asmat, Mappi, and Bouven Digoel area shows lower index. Finally, the vulnerability index in other places is detected as moderate.

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Tropical cyclone rainfall structure affecting indochina peninsula and lower mekong river basin (LMB)

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Journal of Physics: Conference Series 2016年第1期739卷

作者： Rattana CHHIN Nurjanna Joko Trilaksono Tri Wahyu Hadi Meteorology Department Earth Science Study Program Faculty of Earth Science and Technology (FITB) Bandung Institute of Technology (ITB) Indonesia. Rural Engineering Department (GRU) Institute of Technology of Cambodia (ITC) Cambodia

Indochina Peninsula is located in between Bay of Bengal (BoB) and South-China Sea (SCS). This region is affected frequently from Tropical Cyclones (TCs) formed in North Indian Ocean (NIO), South-China Sea (SCS), and North West Pacific Ocean (NWP). This research analyzed the structure of the rainfall over Indochina Peninsula and its relationships with TCs from the aforementioned sources. Principle Component Analysis (PCA) was performed to investigate the dominant rainfall area produced from those TCs. Spatial and Temporal structures of rainfall from the TCs is analyzed to understand their propagation. The results show that the dominant TC rainfall area covers Central Vietnam which contributed around 25% to total rainfall in the region. However, the contribution of this TC rainfall over LMB is likely less than 20% where Laos's territory receives highest contribution (20%). Furthermore, from the three source areas, TCs formed in SCS produce the highest rain rate when they develop into typhoon intensity stage of Joint Typhoon Warning Center (JTWC)'s scale. The average duration of TC rainfall over Indochina Peninsula is 81.28 hours, and over LMB is 66.22 hours. Thus, same as other regions in the Indochina Peninsula, LMB is affected by TC rainfall with considerable scales both spatially and temporally that may lead to significant hydrometeorological hazards.

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Preparation of Superparamagnetic Zn0.5Mn0.5Fe2O4 Particle by Coprecipitation-Sonochemical Method for Radar Absorbing Material

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IOP Conference Series: Materials Science and engineering 2017年第1期202卷

作者： A Taufiq S Bahtiar Sunaryono N Hidayat A Hidayat N Mufti M Diantoro A Fuad Munasir R Rahmawati W A Adi S Pratapa Darminto Department of Physics Faculty of Mathematics and Natural Sciences Universitas Negeri Malang (State University of Malang) Jl. Semarang 5 Malang 65145 Indonesia Center for Minerals and Advanced Materials Faculty of Mathematics and Natural Sciences Universitas Negeri Malang (State University of Malang) Jl. Semarang 5 Malang 65145 Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Universitas Negeri Surabaya (UNESA) Jl. Ketintang Surabaya 60231 Indonesia Engineering Physics Study Program Faculty of Industrial Technology Institut Teknologi Bandung (ITB) Bandung 40132 Indonesia Centre for Technology of Nuclear Industry Materials National Nuclear Energy Agency (BATAN) Kawasan Puspiptek Serpong Tangerang 15314 Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Institut Teknologi Sepuluh Nopember (ITS) Jl. Arif Rahman Hakim Surabaya 60111 Indonesia

One of many applications of spinel ferrite nanoparticles is related to their performance as radar absorbing materials. In this work, we report developing synthesis method through combined coprecipitation-sonochemical routes in preparing Zn0.5Mn0.5Fe2O4 nanoparticle from iron sand in Indonesia as a vital raw material. The structure, size, morphology, and elements of the Zn0.5Mn0.5Fe2O4 nanoparticle were investigated via X-Ray diffractometry and Transmission/Scanning Electron Microscopy (TEM/SEM) combining Energy Dispersive Spectroscopy (EDS). The magnetic properties of the Zn0.5Mn0.5Fe2O4 nanoparticle were characterized by using Vibrating Sample Magnetometer (VSM). Furthermore, the reflection loss character of the Zn0.5Mn0.5Fe2O4 nanoparticle was determined via Vector Network Analyzer (VNA). From the qualitative and quantitative analysis of the XRD data, it can be identified that the Zn0.5Mn0.5Fe2O4 particle formed a spinel cubic structure in a single phase with the lattice parameter of approximately 8.401 Å. It is known from the TEM image that the Zn0.5Mn0.5Fe2O4 particle had a size of about 9.7 nm and tended to agglomerate. Furthermore, the data analysis of the M(H) curve presented that the Zn0.5Mn0.5Fe2O4 nanoparticle has a superparamagnetic behavior with the saturation magnetization of approximately 43 emu/g. Finally, the data analysis of the reflection loss as a function of frequency showed that the Zn0.5Mn0.5Fe2O4 nanoparticle performs as a radar absorbing material with the absorption performance of approximately -11.0 dB at the frequency of 10.8 GHz

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Seawater Intrusion Modeling on Groundwater Confined Aquifer in Semarang

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Procedia Environmental Sciences 2015年 23卷 110-115页

作者： Edy Suhartono P. Purwanto S. Suripin Doctorate Program Of Environmental Studies Post Graduate Program Diponegoro University Jl. Imam Barjo SH No. 5 Semarang-Indonesia-50000 Polytechnic State Of Semarang Jl. Prof.Sudarto SH Semarang - Indonesia- 50000 Department Of Chemical Engineering Faculty Of Engineering Diponegoro University Jl. Prof.Sudarto SH Semarang – Indonesia- 50000 Department Of Civil Engineering Faculty Of Engineering Diponegoro University Jl. Prof.Sudarto SH Semarang – Indonesia- 50000

The focus of this study is to identify and describe of a seawater intrusion in confined aquifer modelling in Semarang with a descriptive quantitative analytical method. The results showed potentially experiencing seawater intrusion which increased of 0.575 km2/years. Seawater intrusion models divide to 3 models are the western route have a maximum error is 27.9%, then the middle route have the maximum error is 41.1% and the eastern route have the maximum error is 40%. In 2035, the seawater intrusion on western route is predicted about 3.0 km from the coastline, 4 km for middle route, and about 3.25 km for eastern route. This is one of the information that from right now, the management of a groundwater in the confined aquifer in Semarang is necessary to supervise and better and more optimal controlling

关键词： Coastal Areas Groundwater Chloride Seawater Intrusions

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Search for Gravitational Waves Emitted from SN 2023ixf

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The Astrophysical Journal 2025年第2期985卷 183-183页

作者： A. G. Abac R. Abbott I. Abouelfettouh F. Acernese K. Ackley S. Adhicary N. Adhikari R. X. Adhikari V. K. Adkins D. Agarwal M. Agathos M. Aghaei Abchouyeh O. D. Aguiar I. Aguilar L. Aiello A. Ain T. Akutsu S. Albanesi R. A. Alfaidi A. Al-Jodah C. Alléné A. Allocca S. Al-Shammari P. A. Altin S. Alvarez-Lopez A. Amato L. Amez-Droz A. Amorosi C. Amra A. Ananyeva S. B. Anderson W. G. Anderson M. Andia M. Ando T. Andrade N. Andres M. Andrés-Carcasona T. Andrić J. Anglin S. Ansoldi J. M. Antelis S. Antier M. Aoumi E. Z. Appavuravther S. Appert S. K. Apple K. Arai A. Araya M. C. Araya J. S. Areeda L. Argianas N. Aritomi F. Armato N. Arnaud M. Arogeti S. M. Aronson G. Ashton Y. Aso M. Assiduo S. Assis de Souza Melo S. M. Aston P. Astone F. Attadio F. Aubin K. AultONeal G. Avallone S. Babak F. Badaracco C. Badger S. Bae S. Bagnasco E. Bagui J. G. Baier L. Baiotti R. Bajpai T. Baka M. Ball G. Ballardin S. W. Ballmer S. Banagiri B. Banerjee D. Bankar P. Baral J. C. Barayoga B. C. Barish D. Barker P. Barneo F. Barone B. Barr L. Barsotti M. Barsuglia D. Barta A. M. Bartoletti M. A. Barton I. Bartos S. Basak A. Basalaev R. Bassiri A. Basti D. E. Bates M. Bawaj P. Baxi J. C. Bayley A. C. Baylor P. A. Baynard II M. Bazzan V. M. Bedakihale F. Beirnaert M. Bejger D. Belardinelli A. S. Bell V. Benedetto W. Benoit J. D. Bentley M. Ben Yaala S. Bera M. Berbel F. Bergamin B. K. Berger S. Bernuzzi M. Beroiz D. Bersanetti A. Bertolini J. Betzwieser D. Beveridge N. Bevins R. Bhandare U. Bhardwaj R. Bhatt D. Bhattacharjee S. Bhaumik S. Bhowmick A. Bianchi I. A. Bilenko G. Billingsley A. Binetti S. Bini O. Birnholtz S. Biscoveanu A. Bisht M. Bitossi M.-A. Bizouard J. K. Blackburn L. A. Blagg C. D. Blair D. G. Blair F. Bobba N. Bode G. Boileau M. Boldrini G. N. Bolingbroke A. Bolliand L. D. Bonavena R. Bondarescu F. Bondu E. Bonilla M. S. Bonilla A. Bonino R. Bonnand P. Booker A. Borchers V. Boschi S. Bose V. Bossilkov V. Boudart A. Boudon A. Bozzi C. Bradaschia P. R. Brady M. Braglia A. Branch M. Branchesi J. Brandt I. Braun M. Breschi T. B Max Planck Institute for Gravitational Physics (Albert Einstein Institute) D-14476 Potsdam Germany LIGO Laboratory California Institute of Technology Pasadena CA 91125 USA LIGO Hanford Observatory Richland WA 99352 USA Dipartimento di Farmacia Università di Salerno I-84084 Fisciano Salerno Italy INFN Sezione di Napoli I-80126 Napoli Italy University of Warwick Coventry CV4 7AL UK The Pennsylvania State University University Park PA 16802 USA University of Wisconsin-Milwaukee Milwaukee WI 53201 USA Louisiana State University Baton Rouge LA 70803 USA Université catholique de Louvain B-1348 Louvain-la-Neuve Belgium Inter-University Centre for Astronomy and Astrophysics Pune 411007 India Queen Mary University of London London E1 4NS UK Department of Physics and Astronomy Sejong University 209 Neungdong-ro Gwangjin-gu Seoul 143-747 Republic of Korea Instituto Nacional de Pesquisas Espaciais 12227-010 São José dos Campos São Paulo Brazil Stanford University Stanford CA 94305 USA Università di Roma Tor Vergata I-00133 Roma Italy INFN Sezione di Roma Tor Vergata I-00133 Roma Italy Cardiff University Cardiff CF24 3AA UK Universiteit Antwerpen 2000 Antwerpen Belgium Gravitational Wave Science Project National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka City Tokyo 181-8588 Japan INFN Sezione di Torino I-10125 Torino Italy Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena D-07743 Jena Germany Dipartimento di Fisica Università degli Studi di Torino I-10125 Torino Italy SUPA University of Glasgow Glasgow G12 8QQ UK OzGrav University of Western Australia Crawley Western Australia 6009 Australia University Savoie Mont Blanc CNRS Laboratoire d’Annecy de Physique des Particules - IN2P3 F-74000 Annecy France Università di Napoli “Federico II ” I-80126 Napoli Italy OzGrav Australian National University C

We present the results of a search for gravitational-wave transients associated with core-collapse supernova SN 2023ixf, which was observed in the galaxy Messier 101 via optical emission on 2023 May 19, during the LIGO–Virgo–KAGRA 15th engineering Run. We define a five-day on-source window during which an accompanying gravitational-wave signal may have occurred. No gravitational waves have been identified in data when at least two gravitational-wave observatories were operating, which covered ∼14% of this five-day window. We report the search detection efficiency for various possible gravitational-wave emission models. Considering the distance to M101 (6.7 Mpc), we derive constraints on the gravitational-wave emission mechanism of core-collapse supernovae across a broad frequency spectrum, ranging from 50 Hz to 2 kHz, where we assume the gravitational-wave emission occurred when coincident data are available in the on-source window. Considering an ellipsoid model for a rotating proto-neutron star, our search is sensitive to gravitational-wave energy 1 × 10⁻⁴ M_⊙c² and luminosity 2.6 × 10⁻⁴ M_⊙c² s⁻¹ for a source emitting at 82 Hz. These constraints are around an order of magnitude more stringent than those obtained so far with gravitational-wave data. The constraint on the ellipticity of the proto-neutron star that is formed is as low as 1.08, at frequencies above 1200 Hz, surpassing past results.

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