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Traffic Engineering and Quality of Service in Hybrid Software Defined Networks

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China Communications 2024年第2期21卷 96-121页

作者： Samiullah Mehraban rajesh kumar Yadav IOT Lab Department of Computer Science&EngineeringDelhi Technological UniversityDelhi 110042India

For Future networks, many research projects have proposed different architectures around the globe;Software Defined Network(SDN) architectures, through separating Data and Control Layers, offer a crucial structure for it. With a worldwide view and centralized Control, the SDN network provides flexible and reliable network management that improves network throughput and increases link utilization. In addition, it supports an innovative flow scheduling system to help advance Traffic Engineering(TE). For Medium and large-scale networks migrating directly from a legacy network to an SDN Network seems more complicated & even impossible, as there are High potential challenges, including technical, financial, security, shortage of standards, and quality of service degradation challenges. These challenges cause the birth and pave the ground for Hybrid SDN networks, where SDN devices coexist with traditional network devices. This study explores a Hybrid SDN network’s Traffic Engineering and Quality of Services Issues. Quality of service is described by network characteristics such as latency, jitter, loss, bandwidth,and network link utilization, using industry standards and mechanisms in a Hybrid SDN Network. We have organized the related studies in a way that the Quality of Service may gain the most benefit from the concept of Hybrid SDN networks using different algorithms and mechanisms: Deep Reinforcement Learning(DRL), Heuristic algorithm, k path partition algorithm, Genetic algorithm, SOTE algorithm, ROAR method, and Routing Optimization with different optimization mechanisms that help to ensure high-quality performance in a Hybrid SDN Network.

关键词： DRL hSDN QoE QoS SDN TE

Structural Characteristics of the Andaman Forearc Inferred from Interpretation of Multichannel Seismic Reflection Data

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Acta Geologica Sinica(English Edition) 2014年第4期88卷 1145-1156页

作者： Anitha GOLI Dhananjai k.pandey National Centre for Antarctic and Ocean Research

The Andaman Forearc Basin （AFB） is asymmetric in configuration and filled with a-6 km-thick pile of Neogene to Recent sediments （-4 s in two-way travel time： TWT） with distinct zonation. It shows gradual thinning up to -3 km （0.8 s in TWT） towards the eastern end with a seabed gradient of 1：30. Thick deformed sediments -2 s （TWT） of the Outerarc are associated with intense faulting and occasional folding caused by recent tectonics. Development of a series of faults within the upwarped sedimentary column of Oligocene top to Recent is observed with a rotated fault block. These features are manifestations of Recent igneous intrusion, and reveal the presence of a mild N-S compressional regime. Its effect on the AFB resulted in further uplift of sediments, which can now be seen as the Invisible Bank. Forward gravity modelling supporting our seismic interpretation reveals that it is associated with igneous intrusion from the Moho （-9 km depth）, and also suggests that continental crust underlies the AFB. Strong Bottom Simulating Reflector （BSR）-like features in the Miocene sediments of Outerarc and Forearc basin at a depth of 0.6 s below the seabed suggest the inferred probable occurrence of gas hydrates in the AFB.

关键词： Structural geology tectonics Tertiary hydrocarbon potential upwarp Andaman Indian Ocean

Seismic stratigraphy and the sedimentation history in the Laxmi Basin of the eastern Arabian Sea:Constraints from IODP Expedition 355

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Geoscience Frontiers 2021年第3期12卷 489-502页

作者： Nisha Nair Dhananjai k.pandey Anju pandey R.Prerna National Centre for Polar and Ocean Research(NCPOR) Ministry of Earth SciencesVasco-da-GamaGoa 403804India H-V3-NCPOR Campus Vasco-da-GamaGoa 403804India

Detailed interpretation of seismic stratigraphic sequences in the Laxmi Basin of the eastern Arabian Sea are presented in this study using closely spaced high resolution multi-channel seismic(MCS)*** stratigraphic interpretation is further corroborated using recent drilling results in the Laxmi Basin,derived from the long sediment cores collected during International Ocean Discovery Program(IODP)Expedition *** core-log interpretation discussed in the present study,offer important insights about the lithostratigraphic variations in this *** of multi-channel seismic reflection data reveal five depositional sequences(ranging from Paleocene to Recent)that led to the development of this marginal basin since the Cenozoic *** igneous basement is successfully imaged,which was also validated by deep sea coring during the IODP Expedition *** the present study,we primarily focus on the post-rift sedimentation in the Laxmi Basin and its possible *** detailed interpretation in the prevailing tectonic framework of the basin suggests that near-shelf oldest volcaniclastic sedimentation immediately overlying the acoustic basement is linked to the onset of India-Madagascar and India-Seychelles rifting activities during the Late Cretaceous ***,during the Early-Mid to Late Miocene,the basin received maximum sedimentation dominantly through an extensive mass transport mechanism implying possible large-scale deformation on the Indian *** sediment input to the basin appears to have been fed variably via the Indus Fan as well as coastal discharge from the Indian *** total sediment thickness in the Laxmi Basin ranges from 1.1 to 3.5 *** stratigraphic information and sediment isopach maps presented here provide vital information about syn-and post-rift sedimentation pattern in the region and their long term tectonic implications.

关键词： Seismic stratigraphy Laxmi Basin Arabian Sea Site U1456 Site U1457 IODP Expedition 355

Late Cenozoic seismic stratigraphy of the Andaman Forearc Basin,Indian Ocean

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Petroleum Science 2017年第4期14卷 648-661页

作者： Dhananjai k.pandey Goli Anitha Ramesh Prerna Anju pandey ESSO-National Centre for Antarctic and Ocean Research Headland SadaVasco da GamaGoa 403 804India

Interpretation of new multichannel seismic reflection data from the Andaman Forearc Basin(AFB) in the northern Indian Ocean is presented here. The highquality multichannel seismic data from the Andaman Forearc region enable us to examine the seismic characters and to demarcate seismic sequences bounded by distinct unconformities. Ages of marked seismic horizons have been calibrated with available litholog data from nearby industry boreholes. Seismic interpretation of new data shows that the AFB is filled with * 4.5-s-two way travel time(TWT) thick Neogene to Recent sediments. The entire basin assemblage exhibits two distinct major sequences pertaining to the Neogene and Quaternary times. A large part of the basin is filled with intermittent mass transport deposits(MTD). We infer that the episodic uplift of the Invisible Bank, protuberance of the outerarc and regular deformation through reactivation of preexisting normal faults since the Pleistocene could be attributed as causal mechanisms for the MTDs. Strong bottom simulating reflectors are identified in the Late Miocene and younger sediments of the outerarc and AFB at a depth of * 0.6 s TWT and correspond to the presence of gas hydrates in this region. Our interpretations have significant implications for geodynamic as well as resource exploration in the AFB.

关键词： Andaman Forearc Basin Neogene Uplift Invisible Bank Outerarc Stratigraphy

Arthroscopic scene segmentation using multispectral reconstructed frames and deep learning

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Intelligent Medicine 2023年第4期3卷 243-251页

作者： Shahnewaz Ali Ross Crawford Ajay k.pandey School of Electrical Engineering and Robotics Faculty of EngineeringQueensland University of TechnologyGardens PointBrisbaneQLD 4000Australia

Background knee arthroscopy is one of the most complex minimally invasive surgeries,and it is routinelyperformed to treat a range of ailments and injuries to the knee *** complex ergonomic design imposesvisualization and navigation constraints,consequently leading to unintended tissue damage and a steep learningcurve before surgeons gain *** lack of robust visual texture and landmark frame features furtherlimits the success of image-guided approaches to knee arthroscopy Feature-and texture-less tissue structures ofknee anatomy,lighting conditions,noise,blur,debris,lack of accurate ground-truth label,tissue degeneration,and injury make semantic segmentation an extremely challenging *** address this complex research problem,this study reported the utility of reconstructed surface reflectance as a viable piece of information that could beused with cutting-edge deep learning technique to achieve highly accurate segmented *** We proposed an intraoperative,two-tier deep learning method that makes full use of tissue reflectanceinformation present within an RGB frame to segment texture-less images into multiple tissue types from kneearthroscopy video *** study included several cadaver knees experiments at the Medical and EngineeringResearch Facility,located within the Prince Charles Hospital campus,Brisbane *** were collectedfrom a total of five cadaver knees,three were males and one from a *** age range of the donors was 56–93 ***-related tissue degeneration and some anterior cruciate ligament injury were observed in mostcadaver *** arthroscopic image dataset was created and subsequently labeled by clinical *** also included validation of a prototype stereo arthroscope,along with conventional arthroscope,to attainlarger field of view and stereo *** reconstructed surface reflectance from camera responses that exhibiteddistinct spatial features at different wavelengths ranging from 3

关键词： knee arthroscopy Segmentation Multispectral reconstructed Deep learning

Biological,pathological,and multifaceted therapeutic functions of exosomes to target cancer

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Oncology Research 2024年第1期32卷 73-94页

作者： VIGNESH BALAJI E DIVYA RAMESH MANISHA CHUNGAN SHAJU AkSHARA kUMAR SAMYAk.pandey RAkSHA NAYAk V.ALkA SRISHTI MUNJAL AMIR SALIMI k.SREEDHARA RANGANATH PAI SHANkAR M.BAkkANNAVAR Department of Pharmacology Manipal College of Pharmaceutical SciencesManipal Academy of Higher EducationManipalKarnataka576104India Department of Forensic Medicine and Toxicology Kasturba Medical CollegeManipal Academy of Higher EducationManipalKarnataka576104India School of Health and Community Services Durham CollegeOshawaOntarioL1G2G5Canada Department of Pharmaceutical Regulatory Affairs and Management Manipal College of Pharmaceutical SciencesManipal Academy of Higher EducationManipalKarnataka576104India Department of Clinical Psychology Manipal College of Health ProfessionsManipal Academy of Higher EducationManipalKarnataka576104India Department of Speech and Hearing Manipal College of Health ProfessionsManipal Academy of Higher EducationManipalKarnataka576104India Department of Pharmacy Practice Manipal College of Pharmaceutical SciencesManipal Academy of Higher EducationManipalKarnataka576104India

Exosomes,small tiny vesicle contains a large number of intracellular particles that employ to cause various diseases and prevent several pathological events as well in the human *** is considered a“double-edged sword”,and depending on its biological source,the action of exosomes varies under physiological ***,the isolation and characterization of the exosomes should be performed accurately and the methodology also will vary depending on the exosome ***,the uptake of exosomes from the recipients’cells is a vital and initial step for all the physiological *** are different mechanisms present in the exosomes’cellular uptake to deliver their cargo to acceptor *** the exosomal uptake takes place,it releases the intracellular particles that leads to activate the physiological *** though exosomes have lavish functions,there are some challenges associated with every step of their preparation to bring potential therapeutic ***,overcoming the pitfalls would give a desired quantity of exosomes with high purity.

关键词： Exosomes Physiology Cancer Therapeutics Challenges

Integrated Multi-stage LQR Power Oscillation Damping FACTS Controller

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CSEE Journal of Power and Energy Systems 2018年第1期4卷 83-92页

作者： Rajendra k.pandey Deepak kumar Gupta Department of Electrical Engineering Indian Institute of Technology(Banaras Hindu University)Varanasi-221005India

This paper presents an approach for oscillation damping with an integrated multi-stage linear quadratic regulator(MSLQR)FACTS controller combining power oscillation damping(POD)*** particle swarm optimization(PSO)technique has been used for precise tuning initial control parameters of power system stabilizers(PSS)and FACTS devices(such as STATCOM and UPFC)which results in improved controller *** is observed that the proposed control structure damps the oscillations adequately and is modular in design *** sample power system comprising six areas is considered to demonstrate the effectiveness of the proposed *** states inter-relation which is shown with eigenvalues reflects better regulation with the proposed *** step response also validates the controller performance.

关键词： Integral time multiplied by absolute error(ITAE) multi-stage linear quadratic regulator(MSLQR) particle swarm optimization(PSO) power oscillation damping controller STATCOM UPFC

Trace fossils of an amalgamated storm-bed succession from the Jurassic of the kachchh Basin,India:The significance of time-averaging in ichnology

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Journal of Palaeogeography 2018年第1期7卷 14-31页

作者： Franz To Fürsich Alfred Uchman Matthias Alberti Dhirendra k.pandey GeoZentrum Nordbayern Fachgruppe PalaoUmweltFriedrich-Alexander-Universitat Erlangen-Numberg Loewenichstra■e 2891054 ErlangenGermany Institute of Geological Sciences Jagiellonian UniversityGronostajowa 3a30-387KrakowPoland Institut fur Geowissenschaften Christian-Albrechts-Universitat zu KielLudewig-Meyn-Stral3e 1024118Kiel Germany Earth and Planetary Sciences GrouplPalaeontology Manipal Center for Natural SciencesManipal University Manipal 576104KarnatakaIndia

The uppermost part of the Upper Bathonian Sponge Limestone member, Patcham Formation, of the Jhura Dome of kachchh Mainland is a thickening-and shallowing-upward succession topped by medium-to thick-bedded hummocky cross-stratified grainstones deposited by storm waves. Occasionally, thin, commonly lenticular, intraclastic-bioclastic silty marl intercalations between the grainstones are highly bioturbated, in contrast to the grainstones, in which, for the most part, trace fossils occur scattered. Large exposures of bedding planes of the grainstones allow the detailed investigation of ichnological features, whereas the high density of traces in the soft marls precludes the identification of any ichnotaxa. Eighteen ichnotaxa have been recorded including Ophiomorpha, Thalassinoides, Taenidium, Gyrophyllites, Chondrites, Dactyloidites, Teichichnus, Bolonia, and Ancorichnus. Except for Ophiomorpha nodosa and Thalassinoides, which generally indicate moderate to high energy conditions and are the dwelling burrows of suspension-feeding to omnivorous crustaceans, the ichnotaxa represent a deposit-feeding behaviour of their producers and thus are characteristic of low-energy environments. The trace fossils form three ichnoassemblages characterized by(1) Ophiomorpha nodosa and Thalassinoides suevicus,(2)?Thalassinoides isp. A, Taenidium, and Bolonia lata,and(3) Ancorichnus. The dominance of traces of deposit-feeders in rocks indicative of high-energy events is counterintuitive and points to their non-contemporaneity. The sediments were deposited during brief highenergy events, whereas the trace fossils were produced when, after waning of storms low-energy conditions prevailed. This time-averaging is particularly pronounced in trace fossils that extend vertically downwards and may reach strata deposited under distinctly different conditions. Thus, environmental interpretations based on trace fossils should refer to colonisation surfaces rather than to the sediment surrounding th

关键词： Trace fossils Middle Jurassic kachchh Basin Taxonomy Time averaging Ichnology

Evaluation of reference evapotranspiration methods for the northeastern region of India

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International Soil and Water Conservation Research 2016年第1期4卷 52-63页

作者： Pankaj k.pandey Parmendra PDabral Vanita pandey Department of Agricultural Engineering North Eastern Regional Institute of Science and Technology(NERIST)NirjuliItanagarArunachal PradeshIndia Department of Soil and Water Engineering College of Agricultural Engineering and Post-Harvest Technology(CAEPHT)RanipoolGangtokSikkimIndia

The study planed to identify a suitable alternative to the FAO 56 Penman-Monteith(FAO56PM)equation for calculating reference evapotranspiration(ET_(0))from chosen te mperature and radiation based models utilizing monthly meteorological data from 30 destinations in diverse agro-ecologial regions of the Northeast(NE)India ie,Assam Bengal Plain(ABP),eastern Himalaya(EH),and the northeastern hilly(NEH)***-based IRMAk3 most appropriate in the ABP(weighted root mean square deviation,WRMSD=0.17 mm d^(-1),r^(2)=0.98,for Nagrakata),and TURC model being in the first three rank of most of the sites,with the lowest error and highest correlation in NEH(WRMSD=0.10 mm d^(-1),r^(2)=0.92,for Shillong),and EH(WRMSD=0.23 mm d^(-1),r^(2)=-0.95,for Gangtok).Findings reveal that IRMAk3 and TURC models performed equally well and were observed to be the best among selected modets for the majority of stations followed by FAO24 Blaney-Criddle(FAO24BC),and 1957MAkk Pair-wise regession equations were developed for preferred FAO56PM ET_(0) estimates to ET_(0) estimates by alternative ***-correlation of eighteen chose methods demonstrated that the five equations(*** radiation-and one temperature-based)performed eceptionally well when contrasted with the FAO56PM model,thus being advised for assessing ET_(0)。under limiting data conditions as have yielded a better estimate of ET_(0) with a small error.

关键词： Reference evapotranspiration Performance statistics Calibration and validation Empirical methods North East India