New precisely cooperative attacks, such as the coordi- nated cross plane session termination (CXPST) attack, need thou- sands upon thousands machines to attack diverse selected links simultaneously with the given ra...New precisely cooperative attacks, such as the coordi- nated cross plane session termination (CXPST) attack, need thou- sands upon thousands machines to attack diverse selected links simultaneously with the given rate. However, almost all command and control(C&C) mechanisms only provide publishing one com- mand to the whole once, so-called one-to-all C&C model, and are not productive to support CXPST-alike attacks. In this paper, we present one-to-any C&C model on coordination among the unco- operative controlled nodes. As an instance of one-to-any C&C model, directional command publishing (DCP) mechanism lever- aging on Kademlia is provided with a range-mapping key creating algorithm for commands to compute the publishing range and a statistically stochastic node querying scheme to obtain the com- mands immediately. With theoretical analysis and simulation, it is indicated that one-to-any C&C model fits for precisely coordi- nated operation on uncooperative controlled nodes with least complexity, better accuracy and efficiency. Furthermore, DCP mechanism can support one-to-all command publishing at the same time. As an example of future C&C model, studying on one-to-any C&C model may help to promote the development of more efficient countermeasures.展开更多
Since wireless links in Ad hoc networks are more fragile than those in traditional wireless networks due to route flapping,multi-node cooperation plays an important role in ensuring the quality of service( QoS). Based...Since wireless links in Ad hoc networks are more fragile than those in traditional wireless networks due to route flapping,multi-node cooperation plays an important role in ensuring the quality of service( QoS). Based on the authors' previous work,this paper proposes a receiver-controlled multi-node cooperation routing protocol,known as AODV-RCC. In this protocol,nodes form a cooperation group based on signal power. In a cooperation group,signal power between a partner and a transmitter,as well as signal power between the partner and the receiver,must be larger than the signal power between the transmitter and the receiver. Otherwise,the transmission will not benefit from cooperation. To avoid collision or congestion,each cooperation group only contains one partner. This partner offers both data and ACK cooperative retransmission. Its retransmission time should be shorter than the internal retry time of the transmitter's MAC layer,because it is better for the partner to retransmit firstly,as it offers a more reliable cooperative link. In AODV-RCC,it is the receiver that chooses the partner,because the link between the partner and the receiver is the most important. According to our simulation results,AODV-RCC shortens the end-to-end delay and increases the packet delivery ratio.展开更多
With the continuous advancement of communication technology, communication plays an increasingly important role in people's daily life and work, and the management of communication engineering has attracted more a...With the continuous advancement of communication technology, communication plays an increasingly important role in people's daily life and work, and the management of communication engineering has attracted more and more attention from the state. In order to meet the people's increasing communication needs, communication engineering will further implement professional and whole-process management, so that communication engineering management will gradually change from the earlier "result" management to the "plan + process + result" management mode. The key nodes in the project management process are extremely important to whether the project achieves the expected goals, and this article analyzes the control of key nodes in the standardized management of communication engineering projects for reference.展开更多
Design of control strategies for gene regulatory networks is a challenging and important topic in systems biology. In this paper, the problem of finding both a minimum set of control nodes (control inputs) and a contr...Design of control strategies for gene regulatory networks is a challenging and important topic in systems biology. In this paper, the problem of finding both a minimum set of control nodes (control inputs) and a controller is studied. A control node corresponds to a gene that expression can be controlled. Here, a Boolean network is used as a model of gene regulatory networks, and control specifications on attractors, which represent cell types or states of cells, are imposed. It is important to design a gene regulatory network that has desired attractors and has no undesired attractors. Using a matrix-based representation of BNs, this problem can be rewritten as an integer linear programming problem. Finally, the proposed method is demonstrated by a numerical example on a WNT5A network, which is related to melanoma.展开更多
基金Supported by the National Natural Science Foundation of China(61402526,61502528)
摘要New precisely cooperative attacks, such as the coordi- nated cross plane session termination (CXPST) attack, need thou- sands upon thousands machines to attack diverse selected links simultaneously with the given rate. However, almost all command and control(C&C) mechanisms only provide publishing one com- mand to the whole once, so-called one-to-all C&C model, and are not productive to support CXPST-alike attacks. In this paper, we present one-to-any C&C model on coordination among the unco- operative controlled nodes. As an instance of one-to-any C&C model, directional command publishing (DCP) mechanism lever- aging on Kademlia is provided with a range-mapping key creating algorithm for commands to compute the publishing range and a statistically stochastic node querying scheme to obtain the com- mands immediately. With theoretical analysis and simulation, it is indicated that one-to-any C&C model fits for precisely coordi- nated operation on uncooperative controlled nodes with least complexity, better accuracy and efficiency. Furthermore, DCP mechanism can support one-to-all command publishing at the same time. As an example of future C&C model, studying on one-to-any C&C model may help to promote the development of more efficient countermeasures.
基金Sponsored by the Natural Scientific Research Innovation Foundation in Harbin Institute of Technology(Grant No.HIT.NSRIF.2013029)the National Science and Technology Major Project(Grant No.2012ZX03004003)+1 种基金the National Basic Research Development Program of China(973 Program)(Grant No.2013CB329003)the National Natural Science Foundation of China(Grant No.61201148 and No.61101123)
摘要Since wireless links in Ad hoc networks are more fragile than those in traditional wireless networks due to route flapping,multi-node cooperation plays an important role in ensuring the quality of service( QoS). Based on the authors' previous work,this paper proposes a receiver-controlled multi-node cooperation routing protocol,known as AODV-RCC. In this protocol,nodes form a cooperation group based on signal power. In a cooperation group,signal power between a partner and a transmitter,as well as signal power between the partner and the receiver,must be larger than the signal power between the transmitter and the receiver. Otherwise,the transmission will not benefit from cooperation. To avoid collision or congestion,each cooperation group only contains one partner. This partner offers both data and ACK cooperative retransmission. Its retransmission time should be shorter than the internal retry time of the transmitter's MAC layer,because it is better for the partner to retransmit firstly,as it offers a more reliable cooperative link. In AODV-RCC,it is the receiver that chooses the partner,because the link between the partner and the receiver is the most important. According to our simulation results,AODV-RCC shortens the end-to-end delay and increases the packet delivery ratio.
摘要With the continuous advancement of communication technology, communication plays an increasingly important role in people's daily life and work, and the management of communication engineering has attracted more and more attention from the state. In order to meet the people's increasing communication needs, communication engineering will further implement professional and whole-process management, so that communication engineering management will gradually change from the earlier "result" management to the "plan + process + result" management mode. The key nodes in the project management process are extremely important to whether the project achieves the expected goals, and this article analyzes the control of key nodes in the standardized management of communication engineering projects for reference.
摘要Design of control strategies for gene regulatory networks is a challenging and important topic in systems biology. In this paper, the problem of finding both a minimum set of control nodes (control inputs) and a controller is studied. A control node corresponds to a gene that expression can be controlled. Here, a Boolean network is used as a model of gene regulatory networks, and control specifications on attractors, which represent cell types or states of cells, are imposed. It is important to design a gene regulatory network that has desired attractors and has no undesired attractors. Using a matrix-based representation of BNs, this problem can be rewritten as an integer linear programming problem. Finally, the proposed method is demonstrated by a numerical example on a WNT5A network, which is related to melanoma.