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international conference on Networks Security, Wireless communications and Trusted computing, NSWCTC

作者： Hong Bian Haizheng Yu School of Maths-physics and Information Sciences Xinjiang Normal University Urumqi P.R.China Key Laboratory of Computer Network and Information Security Xidian University Xi'an P.R.China

ISBN: (纸本)9781424465972;9780769540115

Delay/Disruption Tolerant Networks (DTN) often use multi-copy routing protocols to improve the efficiency that the messages are delivered successfully, but the network load is increased by vast message copies. A new scheme is presented using threshold method on multi-copy routing protocol. The all nodes are added an encounter counter in the message transferred. If the counter reaches the set threshold of counter, the node removes the message copy. With the proper threshold, the message copies decrease obviously and are removed completely in the end, at the same time the successful delivery efficiency is still the same as the Epidemic Routing. In some environments we can abandon TTL or anti-packet approach about redundancy removing of message copies. In simulation, we compare variation trend of the message copies among vary threshold in two scenes.

关键词： Disruption tolerant networking Routing protocols Counting circuits Delay Information security Computer networks Redundancy Computer security Wireless communication communication system control

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A novel methodology to filter out unwanted messages from OSN user’s wall using trust value calculation

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advances in Intelligent Systems and computing 2016年 380卷 755-764页

作者： Bodkhe, Renushree Ghorpade, Tushar Jethani, Vimla Department of Computer Engineering Ramrao Adik Institute of Technology Nerul Navi Mumbai India

ISBN: (纸本)9788132225225

Basic challenge in current Online Social Networks (OSNs) is to grant total control and access to its millions of customers (users) over the data and/or messages shared or highlighted on their personal accounts or private spaces. This control would allow users to have a check on its content and in turn would help in building a strong system facilitating OSN users to directly control the data/content. We need to update our training data on regular basis else it will misclassify any unwanted message which is not in our training data resulting into a negative impact on the accuracy of system. Hence to overcome this limitation we are proposing a new approach where-in an adjustable defined system that allows users to apply text filtering algorithms at preprocessing stage so as to categorize the message and trust value calculation. In this technique it will calculate the trust value for each message and give the trustworthiness of users. If that trust value is less than predefined threshold then it will block that user. © Springer India 2016.

关键词： Social networking (online)

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An Improved Designated-Verifier Proxy Signature Scheme

An Improved Designated-Verifier Proxy Signature Scheme

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international conference on networking, Architecture, and Storage (NAS)

作者： Jianhong Zhang College of Science North-China University of Technology Beijing China Institute of Software of Chinese Academy of Sciences State Key Laboratory of Information Security Beijing China

As a special signature, proxy signature allows a entity called original signer to delegate his signing capability to another entity to produce signature on behalf of him. By combining the ideas of proxy signatures and designated-verifier signatures, *** ***. proposed a strong designated-verifier proxy signature scheme (for short DVP) and claimed that the security of their scheme was based on the computational Diffie- Hellman assumption. Unfortunately, in the paper, we give security analysis of Wang ***'s strong designated-verifier proxy signature scheme and show that their scheme is forgeable. Namely, an adversary can forge a DVP signature on arbitrary message m without the knowledge of the proxy secret key x P or the designated verifier's secret key x C - At the same time, we give two attacks on the Strong designated-verifier proxy signature scheme. Finally, we give an improved scheme to overcome the above forgery attacks, and show the scheme to be secure in random oracle model .

关键词： Voltage control Educational institutions Laboratories Information security Forgery Digital signatures Distributed computing Grid computing Mobile agents Mobile communication

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An Efficient Visual Cryptography Approach for Intermodal Biometric Verification

An Efficient Visual Cryptography Approach for Intermodal Bio...

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Smart Generation computing, communication and networking (SMART GENCON), international conference on

作者： Abhishek Das Nabanita Ganguly Dept. of Computer Science & Engineering MIT Art Design & Technology University Pune India Dept. of Information Technology Maulana Abul Kalam Azad University of Technology Haringhata India

Biometric authentication is one of the important ways of acknowledging an individual using their behavioral and physical characteristics. It can range from fingerprint to an iris or retina image, hand geometry, gait or signature, or some other physiological characteristics. The biometric authentication can be further sub-classified into unimodal and multimodal biometric authentication. The framework of biometrics, which utilizes only one suggestive option for verification is termed unimodal biometric. On the other hand, a lot of research work has been going on for the last two decades on multimodal biometric systems where more than one biometric detail of an individual is collected and used in order to authenticate a person. In other words, it can be said that in a multimodal biometrics system, more than two or sometimes at least two biometric sources of one individual (i.e., iris, dermatoglyphics) are considered and evaluated. In our paper, we have implemented an efficient way of fusing two biometric images (human fused iris image of both two eyes and fused thumb impression of two hands) into one image and converted the color image into a binary image, and used the (2,2) Visual Cryptography Scheme two efficiently create two out of two shares. As part of the reconstruction, we have overlapped the two generated shares to generate the fused image. The fused image was further processed to authenticate the genuine person. The proposed approach reduces storage costs and uses simple steps to implement the project which is easy to understand by non-technical people as well.

关键词： Geometry Visualization Biometrics (access control) Authentication Thumb Retina Physiology

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Optimization to multicasting protocol in unidirectional ad-hoc networks

Optimization to multicasting protocol in unidirectional ad-h...

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IEEE international conference on Wireless and Mobile computing, networking And communications (WiMob)

作者： N. Vanitchanant J. Silvester V. Vipanunt Department of Computer Engineering University of Southern California Los Angeles CA USA IEEE Computer Society

This paper proposes an optimization as an extension to a swarm-like styled, collaborative multicast routing protocol designed for unidirectional ad-hoc networks - called MUNet. MUNet is inspired by swarm intelligence and further motivated by collaboration discovery. The concept of spatial locality suggests the use of neighbor nodes for network resilience (i.e. path self-healing and shortening.) Potential link breakage can be prevented collaboratively by reinforcing neighbor nodes, prior to any costly time-consuming link recovery. Critical path is shortened when exists. In unidirectional ad-hoc networks where essential feedback does not exist at the MAC layer, neighbor collaboration, while increasing network resilience, can adversely affect the overall routing performance. In order to improve routing efficiency and resource utilization, the optimization applies a heuristic feature into the original MUNet protocol. Instantaneously determined by local control traffic density, a node probabilistically sets a level of its responsiveness to participate in the routing protocol maintenance. Compared with the original MUNet and ODMRP using GlomoSim, the proposed optimization mechanism shows a significant reduction on routing overhead along with an improvement on protocol effectiveness.

关键词： Multicast protocols Ad hoc networks Collaboration Routing protocols Resilience Design optimization Particle swarm optimization Feedback Resource management communication system traffic control

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Design and implementation of mobile networking testbeds with personality profiles

Design and implementation of mobile networking testbeds with...

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international Wireless communications and Mobile computing conference, IWCMC

作者： Sungwook Moon Ahmed Helmy Department of Computer and Information Science and Engineering University of Florida USA

Significant advances in mobile networks have taken place recently, specifically with regard to multi-hop wireless networks, including DTNs and sensor networks. A testing environment that is conducive to realistic evaluation of such networks and their protocols and services is critical. In our efforts toward realizing this goal, we propose a novel mobile testbed of two main components. The first consists of a network of robots with personality-mimicking, human-encounter behaviors, which is our focus for this work. The personality is built upon behavioral profiling of mobile users based on our extensive wireless-network analysis. The second component combines the testbed with human society using a new concept that we refer to as participatory testing utilizing crowd sourcing. We blend these two components in the design of our testbed to bridge the gap between controlled and uncontrolled environments. Our prototype testbed demonstrates a realistic mobile networking testbed that emulates human behavior based on profiles while providing a scalable and reproducible environment. In addition, we report on our initial actual implementation of the proposed testbed architecture using two iRobot Create, one HP iPAQ PDA and 9 Nokia tablet devices. Our initial results show that by incorporating personalities into the mobile nodes, they can use autonomous, distributed and efficient algorithms to identify communities based on profile similarity. Correlating such community identification with the mobility of the nodes can indeed result in behavior mimicking traced mobile communities in the real world. Our work is the first to investigate this direction and opens several promising opportunities for research in the area of mobile test beds with many variations in DTN evaluation and participatory networking.

关键词： Robots Mobile communication Mobile handsets Testing Humans Bluetooth Mobile computing

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Camera based face tracking for enhancing surgical teamwork training with non-verbal communication

Camera based face tracking for enhancing surgical teamwork t...

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international conference on Image and Vision computing New Zealand, IVCNZ

作者： S. Marks J. Windsor B. Wunsche Department of Computer Science University of Auckland New Zealand Department of Surgery University of Auckland New Zealand

In recent years, the increased use of simulation for the training of surgical skills has improved the medical curriculum and the overall patient outcome. advances in hardware and simulation techniques have resulted in many commercial applications for training technical skills. However, most of these simulators are extremely expensive and do not consider non-technical skills like teamwork and communication. This is a major drawback since recent research suggests that a a large percentage of mistakes in clinical settings are due to communication problems. In addition training teamwork can also improve the efficiency of a surgical team and as such reduce costs and workload. We present an inexpensive camera-based system for the acquisition of aspects of non-verbal communication of users participating in virtual environment-based teamwork simulations. This data can be used for the enhancement of virtual-environment-based simulations to increase the realism and effectiveness of team communication.

关键词： Cameras Surgery Teamwork Medical simulation Computational modeling communication system control Virtual environment Military computing Network servers Engines

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Moving Objects Databases In Space Applications

Moving Objects Databases In Space Applications

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international conference on Recent advances in Space Technologies (RAST)

作者： Perihan Kilimci Oya Kalipsiz Computer Engineering Department Yesilyurt Turkish Air Force Academy Istanbul Turkey Head of Computer Engineering Department Yildiz Technical University Istanbul Turkey

Determining moving objects for example spacecraft and visualizing them in defense simulation rapidly and correctly are important research issues in national defense. In US military C4ISR systems -command, control, communications, computers, intelligence, surveillance and reconnaissance- produce objects distance by layers of systems that combine surveillance with weapons control In military command and control situations the technical requirements of surveillance and reconnaissance involve vast systems and architectures. In this work, moving objects description of geometry over time is concerned in such a military command Moving objects are basically geometries changing over time; hence, this is accomplished in moving object databases which deal with spatial and temporal databases. Spatial databases concern descriptions of geometry in databases and temporal databases address the development of data over time. In specific time or time interval, moving object or objects can be queried in moving object databases efficiently. Moving objects capabilities are researched and an example application is described in this work.

关键词： Spatial databases Military computing Surveillance Geometry Military communication communication system control control systems Visual databases Application software Space vehicles

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Towards Digital Twin in the Context of Power Wheelchairs Provision and Support 13th

Towards Digital Twin in the Context of Power Wheelchairs Pro...

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13th Advanced Doctoral conference on computing, Electrical, and Industrial Systems, DoCEIS 2022

作者： Lagartinho-Oliveira, Carolina Moutinho, Filipe Gomes, Luís NOVA School of Science and Technology NOVA University Lisbon Caparica Portugal Center for Technology and Systems UNINOVA Caparica Portugal

ISBN: (纸本)9783031075193

Recent advances in digital technologies have been triggered by Industry 4.0, deeply focused on connectivity, real-time data and digitization, with Digital Twin (DT) at the forefront of this. A DT is a virtual counterpart seamlessly linked to a physical entity, both sharing the same properties, characteristics and behavior, using data and information. Applications of DT include real-time monitoring, design/planning, optimization, maintenance, prediction, remote access, etc. This paper gives an overview of the Digital Twin concept and seeks to synthesize the technologies frequently used to enable it. It is also proposed the creation and use of a Digital Twin of a Power Wheelchair to promote the health and wellness of wheelchair users and facilitate services by healthcare professionals in the provision and support of wheelchairs. © 2022, IFIP international Federation for Information Processing.

关键词： Remote control

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Online Hate Classifier For Social Media Platform

Online Hate Classifier For Social Media Platform

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international conference on computing communication control and Automation (ICCUBEA)

作者： Harsh Kulkarni Prathamesh Kulkarni Vishal Khandate Chetan Lohkare Manikrao Dhore Dept of Computer Engineering Vishwakarma Institute of Technology SPPU Pune India

ISBN: (纸本)9781665484527

The surge in social media platforms accredits users to reveal their opinions widely. With this boost in social media usage, the impartation between users becomes divergent because of diversity in educational backgrounds, culture, country, etc. Its consequences may take the form of clashes among the people, contaminating online environments. This content that inculcates hate among the people is termed Hate Speech. Such speech comprises various aggressive, violent, offensive language to target a specific crowd sharing common ideas, philosophy, region, religion, culture, etc. To address this concern, we developed an application that detects whether a given content (text, image) contains hate messages or not. For that, we have used a dataset that contained a total of 24783 comments from Twitter platform with 77.43% of the comments tagged as offensive language and 17% of the comments tagged as hate language. We then experimented with various models like logistic regression, random forest classifier, etc. and we got the best f1 score of 0.97 for the KNN (K-Nearest Neighbour) algorithm, hence we have deployed the final outcome with the KNN algorithm.

关键词： Philosophical considerations Social networking (online) Computational modeling Hate speech Blogs Classification algorithms Cultural differences

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