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Effect of outer surface heating of porous annulus with thermal non equilibrium: Part I

AIP Conference Proceedings 2019年第1期2200卷

作者： N. Ameer Ahamad Maughal Ahmed Ali Baig Azeem Ajmeera Ramesh 1Mathematics Department Faculty of Science University of Tabuk P.O.BOX.741 Zip.71491 Saudi Arabia 2Department of Mechanical Engineering CMR Technical Campus Hyderabad India 3Department of Mathematics and Computer Science Taylor’s University No. 1 Jalan Taylor’s Subang Jaya - 47500 Selangor DarulEhsan Malaysia

The present article investigates the heat transfer due to a boundary condition in an annular cylinder such that the outer surface is heated with constant temperature and inner surface cooled to isothermal temperature. The impact of thermal non-equilibrium between the two phases i.e. fluid and solid phase of porous medium is analyzed. This article deliberates the effect of various physical parameters such as inter-phase heat transfer coefficient, thermal conductivity ratio and Rayleigh number of the heat transfer characteristics of the porous medium. The upper and lower surfaces of cylinder are maintained adiabatically. Results are repressed in terms of isotherms of fluid and solid phase along with streamline.

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Cochlear tuning… of mice and men

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AIP Conference Proceedings 2018年第1期1965卷

作者： Shirin Farrahi Roozbeh Ghaffari Jonathan B. Sellon Hideko H. Nakajima Dennis M. Freeman 1Research Laboratory of Electronics MIT Cambridge Massachusetts USA 2Department of Electrical Engineering and Computer Science MIT Cambridge Massachusetts USA 3Harvard-MIT Program in Health Sciences and Technology Cambridge Massachusetts USA 4Department of Otolaryngology Harvard Medical School and Massachusetts Eye and Ear Boston Massachusetts USA

It has been suggested that humans discriminate different frequency sounds with greater selectivity than other mammals. However, mechanisms that could underlie higher frequency selectivity in humans are unclear. Recent studies show that the tectorial membrane (TM) supports longitudinally propagating waves, and the spread of excitation of these TM waves has been implicated in controlling the tuning properties in a mutant mouse model of hearing. Here we compare TM morphology and waves in humans and mice and show that despite some differences in morphology, the spread of excitation of TM waves is similar in spatial extent. However, the cochlear maps of humans and mice differ significantly, with similar cochlear distances mapping to a narrower range of best frequencies in humans than in mice. By coupling different frequency ranges, TM waves could contribute to differences in frequency tuning in mammals, with the smaller human range of frequencies corresponding to sharper frequency tuning.

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Robust copyright protection scheme for digital images using DCT and compressed sensing techniques

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AIP Conference Proceedings 2022年第1期2393卷

作者： Geetamma Tummalapalli D. Yuvaraj S. Jaganathan V. K. Sheela 1ECE GMR Institute of Technology Rajam Andhra Pradesh India 2Department of Computer Science Cihan University-Duhok Kurdistan region Iraq 3Dept. of Electrical and Electronics Engineering Dr.N.G.P. Institute of Technology Coimbatore India 4IT Viswajyothi College of Engineering and Technology Muvattupuzha Ernakulam Kerala India

The objective of this paper is to implement the robust image watermarking based on compressed sensing technique for copyright protection. This paper proposes an assimilation of watermarking technique into compressed sensing systems. Digital image watermarked signal is created by embedding the definite copyright data in host image signal. Compressive sensing is a recently developed topic in the arena of data compression. It is also called as compressed sampling in which the signals follow the Nyquist-Shannon sampling theorem. In this paper the watermark is extracted under compressive sensing attack with different number of available image coefficients. This paper compares the values of watermarking with compressed sensing and watermarking without compressed sensing.

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Deep learning enabled smart charging technology for electric vehicles

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AIP Conference Proceedings 2022年第1期2527卷

作者： T. Blesslin Sheeba C. Sharanya C. Nayanatara S. K. Indumathi K. Kalins G. Ignisha Rajathi 1Department of ECE R.M.K. Engineering College Chennai India 2Department of ECE Vels Institute of Science Technology and Advanced Studies Chennai India 3Department of EEE Sri Sairam Engineering College Chennai India 4Centre for Automation and Robotics Hindustan Institute of Technology and Science Chennai India 5Department of Science and Humanities Sri Krishna College of Engineering and Technology Coimbatore India 6Department of Computer Science and Business Systems Sri Krishna College of Engineering and Technology Coimbatore India

Reliability, efficiency, and cost-effectiveness of smart grids are enhanced with power demand softening by means of efficient load management in electric vehicles. In such initiatives, the involvement of EV users may reduce due to the lack of adaptable user-centric approaches. During the connection sessions, the EV charging time is determined using a deep learning algorithm-based smart charging strategy proposed in this paper. Here, the total energy cost of the vehicle is minimized by making charging decisions considering demand time series, pricing, environment, driving, and other auxiliary data. The memorization technique is used for the estimation of the optimal solution of the existing connection sessions in the initial stage. The deep learning models are trained with this existing data and optimal decisions to make suitable decisions in real-time scenarios where car usage or future energy price values are undetermined. A significant reduction in the charging cost is observed by training the neural network with the proposed model. The results obtained are compared to the optimal charging costs computed and are found to be closely similar.

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Erratum: "Silicon electronics on silk as a path to bioresorbable, implantable devices" [Appl. Phys. Lett. 95, 133701 (2009)]

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Applied physics letters 2009年第26期95卷 269902页

作者： Dae-Hyeong Kim Yun-Soung Kim Jason Amsden Bruce Panilaitis David L Kaplan Fiorenzo G Omenetto Mitchell R Zakin John A Rogers 1Department of Materials Science and Engineering Beckman Institute and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign 1304 West Green Street Urbana Illinois 61801 USA 2Department of Biomedical Engineering Tufts University Medford Massachusetts 02155 USA 3Defense Advanced Research Projects Agency Arlington Virginia 22203 USA 4Department of Chemistry Department Electrical and Computer Engineering and Department Mechanical Science and Engineering University of Illinois at Urbana-Champaign 1304 West Green Street Urbana Illinois 61801 USA

[This corrects the article on p. 133701 in vol. 95.].

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Finite element formulation of conjugate double diffusion in porous annulus

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AIP Conference Proceedings 2020年第1期2204卷

作者： Maughal Ahmed Ali Baig Azeem N. J. Salman Ahmed Sarfaraz Kamangar T. M. Yunus Khan Irfan Anjum Badruddin Avala Raji Reddy H. M. T. Khaleed 1Department of Mechanical Engineering CMR Technical Campus Hyderabad India 2Department of Mathematics and Computer Science Taylor’s University No. 1 Jalan Taylor’s Subang Jaya - 47500 Selangor Darul Ehsan Malaysia 3Department of Mechanical and Industrial Engineering Sultan Qaboos University Muscat Oman 4Department of Mechanical Engineering College of Engineering King Khalid University PO Box 394 Abha 61421 Kingdom of Saudi Arabia 5Dept of Mechanical Engineering Faculty of Engineering Islamic University Madinah Munawwarra Kingdom of Saudi Arabia

The present work highlights the application of finite element method to conjugate heat and mass in porous annulus. transfer Finite element discretization of double diffusion in porous medium having fixed in annular geometry is presented. The simplest of the two dimensional elements i.e. triangular element is made use of to divide the geometry of problem under investigation into a set of smaller segments. Galerkin method is applied to convert the equations that govern double diffusion in porous medium into a set of algebraic equations. The application of FEM results into 3 equation for each element which is then assembled into a global matrix to get the solution. There are three equations which results into three set of simultaneous equations in the form of global matrix. The formulation is discussed with respect to the solution methodology to be followed.

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Automatic system for stitching microscopic images using OpenPano

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AIP Conference Proceedings 2020年第1期2314卷

作者： Imas Sukaesih Sitanggang Auriza Akbar Riries Rulaningtyas Andriyan Bayu Suksmono Kuwat Triyana Dwi Winarni 1Departement of Computer Science IPB University Bogor Indonesia 2Department of Physics Airlangga University Surabaya. Indonesia 3School of Electrical Engineering and Informatics Institute of technology Bandung Bandung Indonesia 4Department of Physics Gadjah Mada University Yogyakarta Indonesia 5Department of Biology Faculty of Science and Technology Airlangga University Surabaya Indonesia

Analyzing pap smear images by manual reading through a microscope is a challenge for doctors especially in distinguishing epithelial cells from inflammatory cells. A computer-based application is required for cervical cancer screening and displaying the results of reading automatically pap smear images using a microscope. This study aims to develop a module for stitching microscopic images including pap smear images which are collected from a microscope. A module for automatically stitching pap smear images is an important component in pap smear images management system. There are three tasks in stitching several pap smear images which were implemented in this study. Those three tasks include 1) feature extraction with scale-invariant feature transform, 2) estimation of homography or affine transformation by random sample consensus and 3) optimization of connection between images with bundle adjustment and blending. We use OpenPano to implement those three tasks. The system has successfully stitched the pap smear images with the feature overlap among the images greater than 10%. The stitched pap smear image has good quality after smoothing using the vertical blending step. In addition, blurry pixels on in some spots disappeared after performing the stitching error. The image quality has been improved after the multiband blending using 16-band and 128-band which shows the significant improvement on the 128-band. The system is expected to assist doctors in pap smear image identification.

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Electric power supply of steel producing companies: Schematic design solutions to improve reliability of power grids

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AIP Conference Proceedings 2022年第1期2686卷

作者： Gennady P. Kornilov Ildar R. Abdulveleev Oxana S. Logunova Palvan I. Kalandarov Obid Tursunov Dilshod Kodirov Doniyor Abdurakhimov 1Department of Power Supply of Industrial Enterprises Nosov Mangnitogorsk State Technical University Magnitogorsk Russia 2Department of Computer Engineering and Programming Nosov Mangnitogorsk State Technical University Magnitogorsk Russia 3Department of Automation and Control of Technological Process and Production Tashkent Institute of Irrigation and Agricultural Mechanization Engineers 100000 Tashkent Uzbekistan 4Department of Power Supply and Renewable Energy Sources Tashkent Institute of Irrigation and Agricultural Mechanization Engineers 100000 Tashkent Uzbekistan 5Research Institute of Forestry 111104 Tashkent Uzbekistan 6Gulistan State University 120100 Gulistan Uzbekistan

This research is aimed at improving electric power supply reliability at major industrial plants by applying schematic design solutions. The authors analyzed the features of branch electric power distribution systems at a metallurgical plant; considered options of their revamping to improve reliability of electric power supply; carried out experimental research on splitting 110 kV meshed system at the integrated iron and steel works. When performing the research, mathematical simulation methods and full-scale experiment methods were used. Following the research, we proposed three options to revamp the power grid at the industrial plant applying schematic design solutions: Scheme A - separating substations, causing problems, in an individual block; Scheme B - separating independent 110 kV closed electric power grids; Scheme C – splitting the meshed system into two independent circuits. It is proved that the most efficient solution is Scheme C, which is characterized by a lower number of unscheduled downtimes of the facilities by mitigating the effects of faults in one of meshed systems on a continuous operation of shops powered from the neighboring grid; eliminated risks of simultaneous stops of all or the majority of metallurgical shops of the works during short circuits in 110 kV grids; and a considerable reduction in short circuit currents and active losses in 110 kV industrial grids. An aggregate benefit from the proposed measures aimed at revamping of the electrical grid of metallurgical units by applying schematic design solutions is over USD750,000/year.

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Elemental detection of arabica and robusta green bean coffee using laser-induced plasma spectroscopy

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AIP Conference Proceedings 2017年第1期1801卷

作者： Syahrun Nur Abdulmadjid Hesti Meilina Rinda Hedwig Koo Hendrik Kurniawan 1Department of Physics Faculty of Mathematics and Natural Sciences Syiah Kuala University Nangroe Aceh Darussalam 23111 Indonesia 2Department of Chemical Engineering Graduate Program of Syiah Kuala University Darussalam Nangroe Aceh Darussalam 23111 Indonesia 3Department of Computer Engineering Bina Nusantara University Jakarta 14810 Indonesia 4Research Center of Maju Makmur Mandiri Foundation Jakarta 11630 Indonesia

The elemental detection of green bean of arabica and robusta coffee from Gayo Highland, Aceh-Indonesia, has been identified by using fundamental Nd-YAG Laser at 10 Torr of surrounding air gas pressure for distinguishing the characteristics of both coffees. As the preliminary study, we have detected the elements of K 766.49 nm, Na 588.9 nm, Ca 393.3 nm, CN band at 388.3 nm, N 337.13 nm and C 247.8 nm of both coffees. It is noticed that the order of elements concentration from highest to lowest are Ca>K>CN> Na>N> C for arabica and K>Ca>CN >Na>C>N for robusta. The emission intensity of K 766.49 nm is almost same for both of coffee. However, the emission intensity of Na 588.9 nm is lower in Arabica coffee. To distinguish the Arabica coffee and Robusta Coffee, we take the ratio intensity of K/C, Na/C, CN/C, and Ca/C. It is found that the ratio intensities of CN/C and Ca/C in arabica bean are significantly different with robusta bean. That ratio intensities can be used as a marker to discriminate kind of coffee. We also noted that the arabica green bean is 1.3 harder than robusta green bean. These findings prove that the technique of laser-induced plasma spectroscopy can be used to make rapid identification of elements in coffee and can potentially be applied to measure the concentration of blended coffee for the purpose of authentication.

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Photoresist removal using hydrogen radicals produced by tantalum hot-wire catalyst

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AIP Conference Proceedings 2019年第1期2151卷

作者： Masashi Yamamoto Tomohiro Shiroi Tomokazu Shikama Shiro Nagaoka Hideo Horibe 1Department of Electrical and Computer Engineering National Institute of Technology Kagawa College 355 Chokushi-cho Takamatsu Kagawa 761-8058 Japan 2Department of Electronic Systems Engineering National Institute of Technology Kagawa College 551 Kohda Takuma-cho Mitoyo Kagawa 769-1192 Japan 3Graduate School of Engineering Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan

Photoresist removal method using hydrogen radicals produced by decomposing hydrogen on a hot-wire catalyst is one of an environmentally friendly methods. We examined the relationship between photoresist removal rate and its surface temperature and the surface element analysis for a tantalum catalyst. In this study, we considered an adaptability of the catalyst to the removal.

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