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Real-Time Recognition and Location of Indoor Objects

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Computers, Materials & Continua 2021年第8期68卷 2221-2229页

作者： Jinxing Niu Qingsheng Hu Yi Niu Tao Zhang Sunil kumar jha Institute of Mechanics North China University of Water Resources and Electric PowerZhengzhou450011China IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszow100031Poland

Object recognition and location has always been one of the research hotspots in machine *** is of great value and significance to the development and application of current service robots,industrial automation,unmanned driving and other *** order to realize the real-time recognition and location of indoor scene objects,this article proposes an improved YOLOv3 neural network model,which combines densely connected networks and residual networks to construct a new YOLOv3 backbone network,which is applied to the detection and recognition of objects in indoor *** this article,RealSense D415 RGB-D camera is used to obtain the RGB map and depth map,the actual distance value is calculated after each pixel in the scene image is mapped to the real *** results proved that the detection and recognition accuracy and real-time performance by the new network are obviously improved compared with the previous YOLOV3 neural network model in the same *** objects can be detected after the improvement of network which cannot be detected with the YOLOv3 network before the *** running time of objects detection and recognition is reduced to less than half of the *** improved network has a certain reference value for practical engineering application.

关键词： Object recognition improved YOLOv3 network RGB-D camera object location

Robust Reversible Audio Watermarking Scheme for Telemedicine and Privacy Protection

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Computers, Materials & Continua 2022年第5期71卷 3035-3050页

作者： Xiaorui Zhang Xun Sun Xingming Sun Wei Sun Sunil kumar jha Engineering Research Center of Digital Forensics Ministry of EducationJiangsu Engineering Center of Network MonitoringSchool of Computer and SoftwareNanjing University of Information Science&TechnologyNanjing210044China Wuxi Research Institute Nanjing University of Information Science&TechnologyWuxi214100China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science&TechnologyNanjing210044China IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszow Voivodeship100031Poland

The leakage of medical audio data in telemedicine seriously violates the privacy of *** order to avoid the leakage of patient information in telemedicine,a two-stage reversible robust audio watermarking algorithm is proposed to protect medical audio *** scheme decomposes the medical audio into two independent embedding domains,embeds the robust watermark and the reversible watermark into the two domains *** order to ensure the audio quality,the Hurst exponent is used to find a suitable position for watermark *** to the independence of the two embedding domains,the embedding of the second-stage reversible watermark will not affect the first-stage watermark,so the robustness of the first-stage watermark can be well *** the second stage,the correlation between the sampling points in the medical audio is used to modify the hidden bits of the histogram to reduce the modification of the medical audio and reduce the distortion caused by reversible *** experiments show that this scheme has strong robustness against signal processing operations such as MP3 compression of 48 db,additive white Gaussian noise(AWGN)of 20 db,low-pass filtering,resampling,re-quantization and other attacks,and has good imperceptibility.

关键词： Telemedicine privacy protection audio watermarking robust reversible watermarking two-stage embedding

A Multi-Conditional Proxy Broadcast Re-Encryption Scheme for Sensor Networks

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Computers, Materials & Continua 2020年第12期65卷 2079-2090页

作者： Pang Li Lifeng Zhu Brij B.Gupta Sunil kumar jha Nanjing Vocational College of Information Technology Nanjing210044China State Key Laboratory of Bioelectronics Jiangsu Key Laboratory of Remote Measurement and ControlSchool of Instrument Science and EngineeringSoutheast UniversityNanjing210096China Department of Computer Engineering National Institute of TechnologyKurukshetra136119India Department of Computer Science and Information Engineering Asia UniversityTaichung41449Taiwan IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszow Voivodeship100031Poland

In sensor networks,it is a challenge to ensure the security of data exchange between packet switching nodes holding different private *** order to solve this problem,the present study proposes a scheme called multi-conditional proxy broadcast re-encryption(MC-PBRE).The scheme consists of the following roles:the source node,proxy server,and the target *** the condition is met,the proxy can convert the encrypted data of the source node into data that the target node can directly *** allows the proxy server to convert the ciphertext of the source node to a new ciphertext of the target node in a different group,while the proxy server does not need to store the key or reveal the *** the same time,the proxy server cannot obtain any valuable information in the *** paper formalizes the concept of MC-PBRE and its security model,and proposes a MC-PBRE scheme of ciphertext ***,the scheme security has been proved in the random oracle.

关键词： Proxy re-encryption sensor network security broadcast re-encryption

A Robust 3-D Medical Watermarking Based on Wavelet Transform for Data Protection

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Computer Systems Science & Engineering 2022年第6期41卷 1043-1056页

作者： Xiaorui Zhang Wenfang Zhang Wei Sun Xingming Sun Sunil kumar jha Engineering Research Center of Digital Forensics Ministry of EducationJiangsu Engineering Center of Network MonitoringSchool of Computer and SoftwareNanjing University of Information Science&TechnologyNanjing210044China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing210044China Wuxi Research Institute Nanjing University of Information Science&TechnologyWuxi214100China IT Fundamentals and Education Technologies Applications University of Information Technology and Management in RzeszowRzeszowVoivodeship100031Poland

In a telemedicine diagnosis system,the emergence of 3D imaging enables doctors to make clearer judgments,and its accuracy also directly affects doctors’diagnosis of the *** order to ensure the safe transmission and storage of medical data,a 3D medical watermarking algorithm based on wavelet transform is proposed in this *** proposed algorithm employs the principal component analysis(PCA)transform to reduce the data dimension,which can minimize the error between the extracted components and the original data in the mean square ***,this algorithm helps to create a bacterial foraging model based on particle swarm optimization(BF-PSO),by which the optimal wavelet coefficient is found for embedding and is used as the absolute feature of watermark embedding,thereby achieving the optimal balance between embedding capacity and imperceptibility.A series of experimental results from MATLAB software based on the standard MRI brain volume dataset demonstrate that the proposed algorithm has strong robustness and make the 3D model have small deformation after embedding the watermark.

关键词： 3-D medical watermarking robust watermarking PCA BF-PSO

Real-Time Dense Reconstruction of Indoor Scene

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Computers, Materials & Continua 2021年第9期68卷 3713-3724页

Real-time dense reconstruction of indoor scenes is of great research value for the application and development of service robots,augmented reality,cultural relics conservation and other ***-SLAM2 method is one of the excellent open source algorithms in visual SLAM system,which is often used in indoor scene ***,it is time-consuming and can only build sparse scene map by using ORB features to solve camera *** view of the shortcomings of ORB-SLAM2 method,this article proposes an improved ORB-SLAM2 solution,which uses a direct method based on light intensity to solve the camera *** can greatly reduce the amount of computation,the speed is significantly improved by about 5 times compared with the ORB feature method.A parallel thread of map reconstruction is added with surfel model,and depth map and RGB map are fused to build the dense map.A Realsense D415 sensor is used as RGB-D cameras to obtain the three-dimensional(3D)point clouds of an indoor *** calibration and alignment processing,the sensor is applied in the reconstruction experiment of indoor scene with the improved ORB-SLAM2 *** show that the improved ORB-SLAM2 algorithm cause a great improvement in processing speed and reconstructing density of scenes.

关键词： Scene reconstruction improved ORB-SLAM2 direct method surfel

A simplified model for understanding the performance of two-pot enclosed mud cookstoves

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Clean Energy 2019年第4期3卷 288-306页

作者： Ayush Parajuli Saurabh Agrawal Janak kumar Tharu Anil kumar Kamat Ajay kumar jha Hari Bahadur Darlami Department of Mechanical Engineering Pulchowk CampusTribhuvan UniversityLalitpurNepal

The objective of this study is to develop a mathematical model for a two-pot enclosed mud cookstove.A new model has been developed combining transient heat transfer,combustion chemistry and fluid *** model can be used for variation of the operation and design *** model predicts performance parameters such as efficiency,boiling time,excess air ratio(EAR),transient wall,flame and char *** an input power of 5.1 kW,the estimated overall efficiency,EAR and boiling time were 17.1%,1.97 and 43 minutes,*** model outcome is compared with experimental ***,10 parameters are varied and their impact on cookstove performance is *** optimum dimension for the door opening,combustion-chamber height and wall thickness are ***,this study can serve as an effective tool for cookstove design.

关键词： improved cookstove modelling MATLAB transient heat transfer wood

A checklist of the macrofungi of North East India

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Studies in Fungi 2022年第1期7卷 1-24页

作者： Niranjan Roy Dhruva kumar jha Arun kumar Dutta Department of Botany Gauhati UniversityGopinath Bordoloi NagarJalukbariGuwahati-781014AssamIndia

A literature-based checklist of macrofungi occurring in North East India is *** consists of 733 species of macrofungi distributed over 267 genera under 21 orders and 94 *** relevant information provided herein is based on 86 papers and six doctoral *** geographical distribution of the reports covers eight states of North East *** order Agaricales has the highest number of species(330 spp.)followed by Polyporales(126 spp.).The three most represented genera are Russula(38 spp.),Amanita(22 spp.)and Lactarius(23 spp.).This list covers only a part of the actual diversity of macrofungi occurring in the entire North East Indian region as detailed survey on macrofungi of this region is yet to be completed.

关键词： East distribution herein

Conservation Strategy for African Medicinal Species: In Vitro Biotechnological Approach

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Phyton-International Journal of Experimental Botany 2020年第4期89卷 779-794页

作者： Priyanka jha Swati Chahal Devendra kumar Pandey Joginder Singh Ram Prasad Vijay kumar Amity Institute of Biotechnology Amity UniversityKolkataWest Bengal700156India Plant Biotechnology Laboratory Division of Research and DevelopmentLovely Professional UniversityPhagwara144411PunjabIndia Department of Biotechnology School of Bioengineering and BiosciencesLovely Professional UniversityPhagwara144411PunjabIndia Department of Microbiology School of Bioengineering and BiosciencesLovely Professional UniversityPhagwara144411PunjabIndia Department of Botany School of Life SciencesMahatma Gandhi Central UniversityMotihariBihar845401India

The use of medicinal plants for different therapeutic values is well documented in African *** diverse biodiversity hotspots provide a wide range of endemic species,which ensures a potential medicinal *** feasible conservation approach and sustainable harvesting for the medicinal species remains a huge ***,conservation approach through different biotechnological tools such as micropropagation,somatic embryogenesis,synthetic seed production,hairy root culture,molecular markers based study and cryopreservation of endemic African medicinal species is much *** this review,an attempt has been made to provide different in vitro biotechnological approaches for the conservation of African medicinal *** present review will be helpful in further technology development and deciding the priorities at decision-making levels for in vitro conservation and sustainable use of African medicinal species.

关键词： Biotechnological approach conservation medicinal plant African traditional medicine(ATM) start codon targeted polymorphism(SCoT) somatic embryogenesis

Wide angled‘V’is the perfect disposition of a TIVAD catheter when right internal jugular vein is cannulated to gain central access

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Gastroenterology Report 2019年第5期7卷 374-375,I0003页

作者： Chitresh kumar Chandan kumar jha Raouef Ahmed Bichoo Sanjay kumar Yadav Department of Endocrine Surgery Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknowIndia Present affiliation:Department of Surgical Oncology All India Institute of Medical SciencesNew DelhiIndia Present affiliation:Department of General Surgery All India Institute of Medical SciencesPatnaIndia

Introduction A TIVAD(totally implantable venous access device)catheter is inserted into one of the large veins,usually the superior vena cava(SVC),to gain permanent central venous *** tip of the catheter sits just above the heart in the distal third of the SVC and the other end is attached to the silicon rubber port that sits underneath the skin of the anterior chest wall fixed to the fascia of the pectoralis major muscle at the lateral part of the second rib[1].When the access is made through the right internal jugular vein(IJV),complications are fewer compared to cannulation of the left IJV or subclavian veins[2,3].One of the issues that is frequently encountered during catheter placement in the right IJV is the kinking of the catheter,leading to compromised or absent flow despite successful cannulation and positioning of the central venous catheter.

关键词： rubber attached permanent