http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Raza, Syed Abbas,Karim, Muhammad Ramzan Abdul,Shehbaz, Tauheed,Taimoor, Aqeel Ahmad,Ali, Rashid,Khan, Muhammad Imran The Korean Electrochemical Society 2022 Journal of electrochemical science and technology Vol.13 No.2
In the present study, the corrosion behavior of aluminum Al-7075 tempered (T-6 condition) alloy was evaluated by immersion testing and electrochemical testing in 1.75% and 3.5% NaCl environment at acidic, neutral and basic pH. The data obtained by both immersion tests and electrochemical corrosion tests (potentiodynamic polarization and electrochemical impedance spectroscopy tests) present that the corrosion rate of the alloy specimens is minimum for the pH=7 condition of the solution due to the formation of dense and well adherent thin protective oxide layer. Whereas the solutions with acidic and alkaline pH cause shift in the corrosion behavior of aluminum alloy to more active domains aggravated by the constant flux of acidic and alkaline ions (Cl<sup>-</sup> and OH<sup>-</sup>) in the media which anodically dissolve the Al matrix in comparison to precipitated intermetallic phases (cathodic in nature) formed due to T6 treatment. Consequently, the pitting behavior of the alloy, as observed by cyclic polarization tests, shifts to more active regions when pH of the solutions changes from neutral to alkaline environment due to localized dissolution of the matrix in alkaline environment that ingress by diffusion through the pores in the oxide film. Microscopic analysis also strengthens the results obtained by immersion corrosion testing and electrochemical corrosion testing as the study examines the corrosion behavior of this alloy under a systematic evaluation in marine environment.
SDN 기반의 Inter PM IPv6 도메인 핸드오버
( Syed Muhammad Raza ),염상길 ( Sanggil Yeom ),김동수 ( Dongsoo Kim ),주현승 ( Hyunseung Choo ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
Proxy Mobile IPv6 (PMIPv6) is a network based IP mobility management protocol. PMIPv6 make sure that the IP address of the mobile node remains the same as long as the mobile node roams with in the PMIPv6 domain. A mobile node roams with in a PMIPv6 domain. PMIPv6 protocol doesn’t provide the mobility support once the mobile node moves from one PMIPv6 domain to another PMIPv6 domain. This paper proposes a Software Defined Networking (SDN) based PMIPv6 scheme which provides the mobility support for inter PMIPv6 domain movement of mobile node. In the proposed architecture each PMIPv6 domain has a SDN controller and SDN controllers from different domains communicate with each other to share the mobility information.
차량 네트워크에서 수평 수직 핸드오버를 위한 SDN 기반 프록시 모바일 IPv6
( Syed Muhammad Raza ),( Sanggil Yeoum ),( Dongsoo Kim ),( Hyunseung Choo ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.2
This paper proposes a SDN based Proxy Mobile IPv6 (PMIPv6) architecture for heterogeneous vehicular networks (SDN-VANET), to provide the continuity of service during the horizontal handovers and to reduce the delay during vertical and horizontal handovers. SDN-VANET mainly relies on DSRC road side units (RSUs) for V2I communication and to overcome the coverage problem SDN-VANET performs the vertical handover between DSRC and LTE/UMTS. To date there is no standard to perform network layer vertical handovers. Therefore the proposed SDN-VANET architecture also doesn’t provide any mechanism for vertical network layer handovers, but solves the horizontal network layer handovers in DSRC or LTE/UMTS through introducing PMIPv6 in the architecture.
Leveraging Proxy Mobile IPv6 with SDN
RAZA SYED MUHAMMAD,Dongsoo S. Kim,신동렬,추현승 한국통신학회 2016 Journal of communications and networks Vol.18 No.3
The existing Proxy Mobile IPv6 suffers from a long handoverlatency which in turn causes significant packet loss that isunacceptable for seamless realtime services such as multimediastreaming. This paper proposes an OpenFlow-enabled proxy mobileIPv6 (OF-PMIPv6) in which the control of access gateways iscentralized at an OpenFlow controller of a foreign network. Theproposed OF-PMIPv6 separates the control path from the datapath by performing the mobility control at the controller, whereasthe data path remains direct between a mobile access gateway anda local mobility anchor in an IP tunnel form. A group of simpleOpenFlow-enabled access gateways performs link-layer controland monitoring activities to support a comprehensive mobility ofmobile nodes, and communicates with the controller through thestandard OpenFlow protocol. The controller performs networklayermobility control on behalf of mobile access gateways andcommunicates with the local mobility anchor in the Proxy MobileIPv6 domain. Benefiting from the centralized view and information,the controller caches the authentication and configurationinformation and reuses it to significantly reduce the handover latency. An analytical analysis of the proposed OF-PMIPv6 reactiveand proactive handover schemes shows 43% and 121% reductionin the handover latency, respectively, for highly utilized network. The results gathered from the OF-PMIPv6 testbed suggestsimilar performance improvements.
LDCSIR: Lightweight Deep CNN-based Approach for Single Image Super-Resolution
Muhammad, Wazir,Shaikh, Murtaza Hussain,Shah, Jalal,Shah, Syed Ali Raza,Bhutto, Zuhaibuddin,Lehri, Liaquat Ali,Hussain, Ayaz,Masrour, Salman,Ali, Shamshad,Thaheem, Imdadullah International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.spc12
Single image super-resolution (SISR) is an image processing technique, and its main target is to reconstruct the high-quality or high-resolution (HR) image from the low-quality or low-resolution (LR) image. Currently, deep learning-based convolutional neural network (CNN) image super-resolution approaches achieved remarkable improvement over the previous approaches. Furthermore, earlier approaches used hand designed filter to upscale the LR image into HR image. The design architecture of such approaches is easy, but it introduces the extra unwanted pixels in the reconstructed image. To resolve these issues, we propose novel deep learning-based approach known as Lightweight deep CNN-based approach for Single Image Super-Resolution (LDCSIR). In this paper, we propose a new architecture which is inspired by ResNet with Inception blocks, which significantly drop the computational cost of the model and increase the processing time for reconstructing the HR image. Compared with the other state of the art methods, LDCSIR achieves better performance in terms of quantitively (PSNR/SSIM) and qualitatively.