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The effects of machining strategies of magnetic assisted roller burnishing on the resulted surface structure

IOP Conference Series: Materials science and engineering 2018年第1期448卷

作者： Zsolt Kovács Zsolt János Viharos János Kodácsy John von Neumann University GAMF Faculty of Engineering and Computer Science Dep. of Vehicle Technology Kecskemét H-6000 Hungary Department of Manufacturing Science and Technology Budapest University of Technology and Economics Budapest H-1111 Hungary Institute for Computer Science and Control of the Hungarian Academy of Sciences Kende u. 13-17 Budapest H-1111 Hungary John von Neumann University Faculty of Economics and Business Department of Economics and Law Kecskemét H-6000 Hungary

The aim of this paper is to investigate the effect of different burnishing strategy on a C45 steel machining. Burnishing is a well-known, cold working surface improving technology, it is usually applied for cylindrical workpiece. In the reported research a novel developed magnetic assisted ball burnishing (MABB) tool was applied which was designed for MABB machining of flat and harmonic surfaces. To increase its efficiency, different types of machining strategies were applied. After the burnishing process the machined surfaces were measured by surface roughness tester to determine the most important Rsk and Rku tribological parameters. According to the results it can be stated that all different burnishing strategies have special application areas where they can be used efficiently (e.g. sliding surface, moulding tool and after- or pre-machining for ultra-precision machining).

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A CMOS active delay line using injection-locking technique

A CMOS active delay line using injection-locking technique

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URSI Asia-Pacific Radio science Conference (URSI AP-RASC)

作者： Kang-Chun Peng Chan-Hung Lee Tai-Hsuan Tsai Dep. Computer and Communication Engineering National Kaohsiung First Univ. of Science and Technology Kaohsiung Taiwan Dep. RF Research aed Development Regatron Corporation Taipei Taiwan

ISBN: (纸本)9781467399838

This work develops a CMOS active delay line for microwave CW signals. The novel active delay line is mainly based on an injection-locking (IL) technique. The delay of the input signal is linear adjusted with various injection conditions. Comparing with conventional passive or active delay lines, the proposed active delay line has a wider delay tuning range and a higher gain. The implemented CMOS delay line achieves a wide operating range of 2 ~ 2.6 GHz with very wide delay tuning range from 45~220 ns. The power consumption is lower than 7.2 mW.

关键词： Delay lines Delays Meteorology Phase noise Meteorological radar Noise measurement

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Wireless capsule technology: Remotely powered improved high-sensitive barometric endoradiosonde

Wireless capsule technology: Remotely powered improved high-...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： V. F. Annese C. Martin D. R. S. Cumming D. De Venuto Dep. of Electrical and Computer Science Engineering (DEI) Politecnico di Bari Bari Italy University of Glasgow School of Engineering Glasgow Scotland (UK)

ISBN: (纸本)9781479953424

In this paper an improved design of an RFID powered swallowable barometric endoradiosonde (ERS) is presented. The ERS consists of a micro fabricated capacitive sensor printed in gold on Polycaprolactone (PCL) on which a transponder chip design in 0.35μm AMS technology is in-plane bounded to the PCL substrate. The implantable or inside the body, transponder (tag) is powered by the external reader at 900MHz through inductively coupled antennas. The tag performs the capacitance to frequency conversion and transmits data back to the reader using load-shift keying (LSK) modulation. The ERS can measure the sensor output frequency with an INL error of 0.4%, sensitivity (Δf/ΔP) of -6.12MHz/kPa, occupies a volume of 1mm3 (transponder only), consumes, 400μW and 360μW for, respectively, dynamic and static power. The sensor has an accuracy of ± 0.1kPa, works in the pressure range of 0-1.99kPa (0-15mmHg). The readout circuit has a ±1.84kHz resolution.

关键词： Substrates Capacitors Erbium Data acquisition Modulation Capacitance Resists

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Smart World of Internet of Things (IoT) and Its Security Concerns

Smart World of Internet of Things (IoT) and Its Security Con...

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IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom) Green Computing and Communications (GreenCom)

作者： Jonathan Charity Talwana Huang Jian Hua East China University of Science and Technology Shanghai Shanghai CN Dep. of Computer Science and Information Engineering East China University of Science Technology Shanghai China

ISBN: (纸本)9781509058815

Due to increasing number of internet users, popularity of Broadband Internet also increasing. Hence the connection cost should be decrease due to Wi Fi connectivity and built-in sensors in devices as well the maximum number of devices should be connected through a common medium. To meet all these requirements, the technology so called Internet of Things is evolved. Internet of Things (IoT) can be considered as a connection of computing devices like smart phones, coffee maker, washing machines, wearable device with an internet. IoT create network and connect "things" and people together by creating relationship between either people-people, people-things or things-things. As the number of device connection is increased, it increases the Security risk. Security is the biggest issue for IoT at any companies across the globe. Furthermore, privacy and data sharing can again be considered as a security concern for IoT. Companies, those who use IoT technique, need to find a way to store, track, analyze and make sense of the large amounts of data that will be generated. Few security techniques of IoT are necessary to implement to protect your confidential and important data as well for device protection through some internet security threats.

关键词： Internet of Things Security Intelligent sensors Wireless communication Real-time systems

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The ultimate IoT application: A cyber-physical system for ambient assisted living

The ultimate IoT application: A cyber-physical system for am...

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International Symposium on Circuits and Systems

作者： D. De Venuto V. F. Annese A. L. Sangiovanni-Vincentelli Politecnico di Bari Dep. of Electrical and Computer Science Engineering (DEI) Bari Italy University of California at Berkeley Department of EECS US

ISBN: (纸本)9781479953424

We propose a novel approach that integrates wireless, non-invasive devices with fast, real-time algorithms for large data analysis and biofeedback reaction, to discern the voluntariness of human movement through direct sensing of brain potentials combined with muscular action signal monitoring. The system has been tested in real situations.

关键词： Fall Prevention EEG-EMG Remote Monitoring

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A New Categorization Numerical Scheme for Mobile Robotic Computing Using Odor Data-set Recognition as a Case

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Procedia computer science 2016年 94卷 199-206页

作者： Choukri Djellali Mehdi Adda Mathematics Computer Science and Engineering Dep. University of Quebec At Rimouski 300 Allée des Ursulines Rimouski QC G5L 3A1 Canada

Categorization is one of the most active research and application areas of Data Mining. In this paper, we address the problem of pattern categorization in mobile robotic computing. It is the task of automatically sorting a set of patterns into categories from a predefined set. Most categorization algorithms are sensitive to noise, architecture configuration, Bellman's curse of dimensionality, instability, and complex shapes. Hence, in the present study, a novel numerical scheme (RC) for pattern categorization which provides a good generalization ability with a small empirical error, is described. The experimental study with E-nose of six different MOX gas sensors is presented. Our evaluation method demonstrates the effectiveness and multidisciplinary applications of our approach.

关键词： Machine Learning Information Retrieval Pattern Recognition Categorization Features Selection Support Vector Machines

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A sound framework for dynamic prevention of Local File Inclusion 7

A sound framework for dynamic prevention of Local File Inclu...

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7th Conference on Information and Knowledge Technology, IKT 2015

作者： Tajbakhsh, Mir Saman Bagherzadeh, Jamshid Dep. of Electrical Engineering and Computer Science Urmia University Urmia Iran

ISBN: (纸本)9781467374859

Web applications take an important role in remote access over the Internet. These applications have many capabilities such as database access, file read/write, calculations as well as desktop applications but run in web browsers environments. As desktop applications, web applications can be exploited but with different techniques. One of the major known vulnerabilities of the web applications is Local File Inclusion. Inclusion in web applications is similar to library imports in desktop applications where a developer can include former developed codes. If an attacker includes his/her libraries, he/she can run his/her malicious code. Current research makes a brief survey of static and dynamic code analysis and suggests a framework for dynamically preventing malicious file inclusions by attackers. It is discussed that this framework prevents local file inclusions even if the developer has exploitable source code. The language PHP is used for describing the vulnerability and prevention framework. © 2015 IEEE.

关键词： Web browsers

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A computer-Aided Grading System of Breast Carcinoma: Scoring of Tubule Formation

A Computer-Aided Grading System of Breast Carcinoma: Scoring...

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Chien-Chuan Ko Chi-Yang Cheng Chun-Hung Lin Dep. of Computer Science and Information Engineering National ChiaYi University Chia Yi Taiwan Dept. of General Surgery DaLin TsuChi Hospital Taiwan

ISBN: (纸本)9781509024629

Grading of breast carcinoma plays an important role for identification of severity of the disease and prognostic treatment in histopathology. It also is one of important indicators of carcinoma patterns. In general, it dep.nds on three indices: tubule formation, nuclear plemorphism, and mitotic counts by scoring based on the degrees of cell differentiation or proliferation. However, scoring on these indices often subjects to intra-and inter-observer variability due to its complexities and manual classifications by pathologists. This study aims to accurately determine the scoring of tubule formation for histological grading using a series of image processing and a classifier consisting of support vector machine with Gaussian kernel function. To demonstrate the performance of the proposed method, a number of H&E stained images acquired from biopsy tissues of patients were tested with the proposed system for the scoring. Experimental result reveals that the proposed algorithms can obtain satisfactory scoring compared to other reported works. Therefore, it can provide reliable scores in the tubule formation and grade of breast carcinoma especially for ductal carcinoma.

关键词： Glands Feature extraction Breast Biopsy Indexes Image segmentation Area measurement

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On the design of a word game to enhance Italian language learning

On the design of a word game to enhance Italian language lea...

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International Conference on Computing, Networking and Communications

作者： Marco Roccetti Paola Salomoni Mathieu Loiseau Monica Masperi Virginie Zampa Andrea Ceccherelli Cristiana Cervini Antonella Valva Dep. of Computer Science and Engineering Universita di Bologna Universite Stendhal Grenoble Dept. of Modern Languages Literatures and Cultures Universita di Bologna

ISBN: (纸本)9781467385800

The use of game-based apps in e-learning has become a relevant trend with the diffusion of smart mobile devices. This is particularly true in language learning, where new captivating word games become a mean to enlarge vocabulary and improve the lexical accuracy of the user. This work presents MagicWord, a game based on widely known game mechanisms, but specifically designed and developed in order to support beginners learning Italian through an A1 level e-learning course. The paper presents the design and implementation of a demo version of MagicWord, through the main challenges encountered during its creation.

关键词： Game apps Edutainment Language learning

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Shape reconstruction method for imaging conductive materials in Electrical Capacitance Tomography

Shape reconstruction method for imaging conductive materials...

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Annual Conference of Industrial Electronics Society

作者： Wael A. Deabes Mohamed Abdelrahman Computer Science Dep. University Collage Umm-Al-Qura University Makkah KSA Computer and System Dept. Mansoura University EGYPT Engineering Arkansas Tech University AR USA

One of the innovative application of the tomography process is detecting the size and the location of the grounded metal in the Lost Foam Casting (LFC). Traditional methods based on fixed sensitivity matrix for solving the inverse problem are failed while the other dynamic methods for updating the sensitivity matrix are consuming time. A design of a narrow band level set method to reconstruct the interfaces between the grounded objects and the foam patterns is discussed. The level set method is a well suited method compared with the traditional pixel based image reconstruction methods for the case of the grounded metal. This method can provide more accurate solution for recovering the shape and the place of the grounded metal. Two difficult problems are associated with the ECT system for the grounded material, sensitivity matrix calculation and the shielding problem. The effect of the grounded metal on the sensitivity matrix is studied and the shielding problem is demonstrated. The final results, based on simulations, demonstrate the advantage of using the shape reconstruction method to track the shape and the location of the grounded metal in the imaging area.

关键词： Level set Shape Metals Sensitivity Image reconstruction Imaging Inverse problems

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