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Edge robotics:are we ready?an experimental evaluation of current vision and future directions

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Digital Communications and Networks 2023年第1期9卷 166-174页

作者： Milan Groshev Gabriele Baldoni Luca Cominardi Antonio de la Oliva Robert gazda University Carlos Ⅲ of Madrid Leganes28028MadridSpain ZettaScale Technology SARL Saint-Aubin91190France InterDigital Inc. WilmingtonDE19809USA

Cloud-based robotics systems leverage a wide range of Information Technologies(IT)to offer tangible benefits like cost reduction,powerful computational capabilities,data offloading,***,the centralized nature of cloud computing is not well-suited for a multitude of Operational Technologies(OT)nowadays used in robotics systems that require strict real-time guarantees and *** computing and fog computing are complementary approaches that aim at mitigating some of these challenges by providing computing capabilities closer to the *** goal of this work is hence threefold:i)to analyze the current edge computing and fog computing landscape in the context of robotics systems,ii)to experimentally evaluate an end-to-end robotics system based on solutions proposed in the literature,and iii)to experimentally identify current benefits and open challenges of edge computing and fog *** show that,in the case of an exemplary delivery application comprising two mobile robots,the robot coordination and range can be improved by consuming real-time radio information available at the ***,our evaluation highlights that the existing software,wireless and virtualization technologies still require substantial evolution to fully support edge-based robotics systems.

关键词： Edge robotics experimental fog MEC Virtualization ROS Fog05

Iterative signal reconstruction of deliberately clipped SMT signals

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Science China(Information Sciences) 2014年第2期57卷 5-17页

作者： KOLLR Zsolt gazda Juraj HORVTH Pter VARGA Lajos KOCUR Duan Budapest University of Technology and Economics Technical University of Koice

Staggered MultiTone(SMT)is a modulation technique showing significantly reduced Adjacent Channel Leakage Ratio(ACLR)resulting in a more compact Power Spectrum Density(PSD)for the transmitted signal,than the well-known and already widely adopted Orthogonal Frequency Division Multiple Access(OFDMA)***,the unique spectral properties of an SMT signal could be degraded by a non-linear element(e.g.a Power Amplifier(PA))in the *** baseband clipping can be applied to the transmitted signal,reducing the notable high Peak-to-Average Power Ratio(PAPR).The objective of this paper is to give a brief introduction to the SMT scheme,with a special emphasis on deliberate clipping efects and their *** paper introduces two receiver-oriented iterative methods aiming at the restoration of the baseband Bit Error Rate(BER)performance of a non-clipped *** methods are evaluated and compared based on numerical *** paper concludes with the selection of a possible candidate for use in systems applying deliberately clipped SMT signals.

关键词： clipping SMT iterative decoding nonlinear distortion PAPR

Deep Semisupervised Learning-Based Network Anomaly Detection in Heterogeneous Information Systems

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Computers, Materials & Continua 2022年第1期70卷 413-431页

作者： Nazarii Lutsiv Taras Maksymyuk Mykola Beshley Orest Lavriv Volodymyr Andrushchak Anatoliy Sachenko Liberios Vokorokos Juraj gazda Lviv Polytechnic National University Lviv79013Ukraine West Ukrainian National University Ternopil46009Ukraine Technical University of Kosice Kosice04200Slovakia

The extensive proliferation of modern information services and ubiquitous digitization of society have raised cybersecurity challenges to new *** the massive number of connected devices,opportunities for potential network attacks are nearly *** additional problem is that many low-cost devices are not equippedwith effective security protection so that they are easily hacked and applied within a network of bots(botnet)to perform distributed denial of service(DDoS)*** this paper,we propose a novel intrusion detection system(IDS)based on deep learning that aims to identify suspicious behavior in modern heterogeneous information *** proposed approach is based on a deep recurrent autoencoder that learns time series of normal network behavior and detects notable network *** additional feature of the proposed IDS is that it is trained with an optimized dataset,where the number of features is reduced by 94%without classification accuracy ***,the proposed IDS remains stable in response to slight system perturbations,which do not represent network *** proposed approach is evaluated under different simulation scenarios and provides a 99%detection accuracy over known datasets while reducing the training time by an order of magnitude.

关键词： DDoS deep semisupervised learning cybersecurity anomaly detection

Structural and thermophysical properties characterization of continuously reinforced cast Al matrix composite

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China Foundry 2010年第4期7卷 456-462页

作者： Brian Gordon Natalia Sobczak Ma gorzata Warmuzek Andrzej gazda Lukasz Boroń Robert M.Purgert Jerzy J.Sobczak Touchstone Research Laboratory Ltd. Foundry Research Institute Energy Industries of Ohio

In this work the process of manufacturing a continuously reinforced cast Al matrix composite and its properties are presented. The described technology permits obtaining a structural material of competitive properties compared to either heat treatable aluminum alloys or polymer composites for several types of applications. The examined thermophysical properties and structural characterization, including material anisotropy, coupled with the results of previous measurements of the mechanical properties of both Al2O3 reinforcing filaments and metallic prepregs have proven the high quality of this material and the possibility of its operation under special loading modes and environmental conditions. Microscopic examinations (LM, SEM) were carried out to reveal the range of morphological homogeneity of the microstructure, the anisotropy of the filament band distribution, and simultaneously the adhesive behavior of the metal/fbier interface. The 3D morphology of the chosen microstructure components was revealed by computed tomography. The obtained results indicate that special properties of the examined prepreg materials have been strongly influenced, on the one hand, by the geometry of its internal microstructure, i.e. spatial distribution and volume fraction of the Al2O3 reinforcing filaments and, on the other hand, by a very good compatibility obtained between the individual metal prepreg components.

关键词： Al-MMC MetPreg alumina fibers microstructure thermophysical properties

A comparative study of name resolution and routing mechanisms in 网 information-centric networks

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Digital Communications and Networks 2019年第2期5卷 69-75页

作者： Hang Liu Koorosh Azhandeh Xavier de Foy Robert gazda Department of Electrical Engineering and Computer Science The Catholic University of AmericaWashingtonDC 20064USA InterDigital Communications Inc.MontrealQC H3A 3G4Canada InterDigital Communications Inc.ConshohockenPA 19428USA

Information-Centric Networking (ICN) is an innovative paradigm for the future internet architecture, which addresses IP network limitations in supporting content distribution and information access by decoupling content from hosts and providing the ability to retrieve a content object by its name (identifier), rather than its storage location (IP address). Name resolution and routing is critical for content retrieval in ICN networks. In this research, we perform a comparative study of two widely used classes of ICN name resolution and routing schemes, namely flooding and Distributed Hash Table (DHT). We consider the flooding-based routing in Content-Centric Networks due to its wide acceptance. For the DHT scheme, we design a multi-level DHT that takes into account the underlying network topology and uses name aggregation to further reduce control overhead and improve network efficiency. Then, we compare the characteristics and performance of these two classes of name resolution and routing through extensive simulations. The evaluation results show that the performances of these two approaches are reliant on several factors, including network size, content location dynamics, and content popularity. Our study reveals insights into the design tradeoffs and offers guidelines for design strategies.

关键词： Information-centric networks Content-centric networks Name resolution Name-based routing

连续增强铸造铝基复合材料的结构特征和热物理性能

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铸造 2010年第12期59卷 1237-1243页

作者： Brian Gordon Natalia Sobczak Malgorzata Warmuzek Andrzej gazda Lukasz Boroń Robert M.Purgert Jerzy Sobczak 朱文高 Touchstone Research Laboratory Ltd. Foundry Research Institute Energy Industries of Ohio

介绍了连续增强铸造铝基复合材料的性能及其制造过程。该工艺能获得一种在某些应用场合中性能优于可热处理的铝合金或聚合复合材料的结构材料。检验得到的热物理性能和结构特征,包括材料的各向异性以及以前Al2O3增强纤维及金属预浸料坯... 详细信息

介绍了连续增强铸造铝基复合材料的性能及其制造过程。该工艺能获得一种在某些应用场合中性能优于可热处理的铝合金或聚合复合材料的结构材料。检验得到的热物理性能和结构特征,包括材料的各向异性以及以前Al2O3增强纤维及金属预浸料坯力学性能的测定结果都证明了该材料的高质量及其在特定的载荷模式和环境条件下工作的可能性。显微观察(光学显微镜,扫描电子显微镜)显示了微观组织的形态均匀性范围,纤维带分布的各向异性,以及金属/纤维界面的粘着特性。用计算机层析X射线照相法来显示所选取的微观组织组元的三维形态。结果表明:预浸料坯的特殊性能一方面受到其内在的微观组织几何形态,即Al2O3增强纤维体积分数和空间分布的强烈影响,另一方面还受到金属预浸料坯的各组元之间达到非常好的相容性的强烈影响。

关键词： Al基复合材料金属浸渍 Al2O3纤维微观组织热物理特性

半永久性石墨电极装置——对水冷组合电极的改进

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炭素技术 1986年第6期 30-32页

作者： I.W.gazda 王澍

1.引言由于水冷组合电极能够降低电炉炼钢的成本,几年来一直受到人们的关注。目前,许多公司正在积极研究水冷组合电极,并且在试验或半工业的基础上推广应用到欧洲和北美。这种水冷组合电极一般有一个水冷金属管作为柱体的上段,尺寸稍小... 详细信息

1.引言由于水冷组合电极能够降低电炉炼钢的成本,几年来一直受到人们的关注。目前,许多公司正在积极研究水冷组合电极,并且在试验或半工业的基础上推广应用到欧洲和北美。这种水冷组合电极一般有一个水冷金属管作为柱体的上段,尺寸稍小的电极就接在管子的下面。钢、铜、不锈钢、铝以及石墨都可作为各种金属管组合件和接头的结构材料。同时在试验中用化学材料或陶瓷涂在石墨电极表面以防氧化和腐蚀。半永久性电极装置与水冷组合电极大不相同,它有一根半永久性的水冷石墨电极作为柱体的上段,这根电极在上段使用寿命到期后,还可以作为柱体的中段和下段使用。

关键词：组合电极石墨电极半永久性装置

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超高分子量聚氯乙烯

济南二轻科技开发与消费 1992年第4期 2-5页

作者： gazda,RF 张文凯

Clinical laboratory and imaging evidence for effectiveness of agarose-agarose macrobeads containing stem-like cells derived from a mouse renal adenocarcinoma cell population (RMBs) in treatment-resistant, advanced metastatic colorectal cancer:Evaluation of

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Chinese Journal of Cancer Research 2018年第1期30卷 72-83页

作者： Barry H.Smith Lawrence S.gazda Thomas J.Fahey Angelica Nazarian Melissa A.Laramore Prithy Martis Zoe P.Andrada Joanne Thomas Tapan Parikh Sudipta Sureshbabu Nathaniel Berman Allyson J.Ocean Richard D.Hall David J.Wolf The Rogosin Institute New York NY 10021 USA The Rogosin Institute-Xenia Division Xenia OH 45385 USA New York Presbyterian-Weill Cornell Medical Center New York NY 10021 USA Bob Evans Farms Inc. New Albany OH 43054 USA

Objective： The complexity, heterogeneity and capacity of malignant neoplastic cells and tumors for rapid change and evolution suggest that living-cell-based biological-systems approaches to cancer treatment are merited. Testing this hypothesis, the tumor marker, metabolic activity, and overall survival（OS） responses, to the use of one such system, implantable macrobeads [RENCA macrobeads（RMBs）], in phase I and IIa clinical trials in advanced,treatment-resistant metastatic colorectal cancer（m CRC） are described ***： Forty-eight m CRC patients（30 females; 18 males）, who had failed all available, approved treatments,underwent RMB implantation（8 RMB/kg body weight） up to 4 times in phase I and phase IIa open-label ***, labs [tumor and inflammation markers, lactate dehydrogenase（LDH）] and positron emission tomography-computed tomography（PET-CT） imaging to measure number/volume and metabolic activity of the tumors were performed pre-and 3-month-post-implantation to evaluate safety and initial efficacy（as defined by biological responses）. PET-CT maximum standard uptake value（SUVmax）（baseline and d 90; SUVmax ≥2.5）, LDH,and carcinoembryonic antigen（CEA） and/or cancer antigen 19-9（CA 19-9） response（baseline, d 30 and/or d 60）were assessed and compared to ***： Responses after implantation were characterized by an at least 20% decrease in CEA and/or CA 19-9 in75% of patients. Fluorodeoxyglucose（FDG）-positive lesions（phase I, 39; 2 a, 82） were detected in 37/48 evaluable patients, with 35% stable volume and stable or decreased SUV（10） plus four with necrosis; 10, increased tumor volume, SUV. LDH levels remained stable and low in Responders（R）（d 0–60, 290.4–333.9）, but increased steadily in Non-responders（NR）（d 0–60, 382.8–1,278.5）（d 60, P=0.050）. Responders to RMBs, indicated by the changes in the above markers, correlated with OS（R mean OS=10.76 months; NR mean OS=4.9 months; P=0.0006）.Conclusions： The correlations of the tumor marker, tumor volume

关键词： Clinical trial systems-biology RENCA macrobeads metastatic colorectal cancer colon cancer