The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
Morio Toyoshima - One of the best experts on this subject based on the ideXlab platform.
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an efficient utilization of intermittent surface satellite optical links by using Mass Storage Device embedded in satellites
Performance Evaluation, 2015Co-Authors: Kazuma Kaneko, Yuichi Kawamoto, Hiroki Nishiyama, Nei Kato, Morio ToyoshimaAbstract:Recently, earth observation system by using satellite network has attracted much attention due to its wide coverage and disaster resistance. Although the system is useful for collecting various data, which have an effect on a natural disaster, ecology and so forth, earth observation satellite hardly send the collected observation data to the ground station. This is because that the earth observation satellite needs to orbit near surface of the earth to get high-precision data, and it limited the time that can be used to send the observed data traffic to the ground station. Additionally, the amount of the observed data drastically increase in these days. Thus, we focus on the data relay satellite using optical communication in this network. By relaying observed data to traffic to the relay satellite, which has geostationary orbit, it is possible to increase the chance of sending data for the observation satellite due to the wide coverage of the relay satellite. In addition, laser light that is used in optical communication in satellite network has high frequency and it can deliver large data compared with radio wave. However, laser light is greatly influenced by atmosphere, and optical link capacity between satellite and ground station drastically changes according to weather condition. Therefore, we propose a new data traffic control method to use the network constructed by satellites which has Mass Storage Device effectively according to the condition of optical downlink between satellite and optical ground station. The effectiveness of the proposed method is evaluated with numerical result.
Tom Dean - One of the best experts on this subject based on the ideXlab platform.
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This work is licensed under the Creative Commons Attribution License.
2016Co-Authors: Usbcat Towards, Intrusion Surveillance Toolset, Chris Chapman, Scott Knight, Tom DeanAbstract:This paper identifies an intrusion surveillance framework which provides an analyst with the ability to investigate and monitor cyber-attacks in a covert manner. Where cyber-attacks are perpetrated for the purposes of espionage the ability to understand an adversary’s techniques and objectives are an important element in network and computer security. With the appropriate toolset, security investigators would be permitted to perform both live and stealthy counter-intelligence operations by observing the behaviour and communications of the intruder. Subsequently a more complete picture of the attacker’s identity, objectives, capabilities, and infiltration could be formulated than is possible with present technologies. This research focused on developing an extensible framework to permit the covert investigation of malware. Additionally, a Universal Serial Bus (USB) Mass Storage Device (MSD) based covert channel was designed to enable remote command and control of the framework. The work was validated through the design, implementation and testing of a toolset
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USBcat - Towards an Intrusion Surveillance Toolset
Open Publishing Association, 2014Co-Authors: Chris Chapman, Scott Knight, Tom DeanAbstract:This paper identifies an intrusion surveillance framework which provides an analyst with the ability to investigate and monitor cyber-attacks in a covert manner. Where cyber-attacks are perpetrated for the purposes of espionage the ability to understand an adversary's techniques and objectives are an important element in network and computer security. With the appropriate toolset, security investigators would be permitted to perform both live and stealthy counter-intelligence operations by observing the behaviour and communications of the intruder. Subsequently a more complete picture of the attacker's identity, objectives, capabilities, and infiltration could be formulated than is possible with present technologies. This research focused on developing an extensible framework to permit the covert investigation of malware. Additionally, a Universal Serial Bus (USB) Mass Storage Device (MSD) based covert channel was designed to enable remote command and control of the framework. The work was validated through the design, implementation and testing of a toolset
Kazuma Kaneko - One of the best experts on this subject based on the ideXlab platform.
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an efficient utilization of intermittent surface satellite optical links by using Mass Storage Device embedded in satellites
Performance Evaluation, 2015Co-Authors: Kazuma Kaneko, Yuichi Kawamoto, Hiroki Nishiyama, Nei Kato, Morio ToyoshimaAbstract:Recently, earth observation system by using satellite network has attracted much attention due to its wide coverage and disaster resistance. Although the system is useful for collecting various data, which have an effect on a natural disaster, ecology and so forth, earth observation satellite hardly send the collected observation data to the ground station. This is because that the earth observation satellite needs to orbit near surface of the earth to get high-precision data, and it limited the time that can be used to send the observed data traffic to the ground station. Additionally, the amount of the observed data drastically increase in these days. Thus, we focus on the data relay satellite using optical communication in this network. By relaying observed data to traffic to the relay satellite, which has geostationary orbit, it is possible to increase the chance of sending data for the observation satellite due to the wide coverage of the relay satellite. In addition, laser light that is used in optical communication in satellite network has high frequency and it can deliver large data compared with radio wave. However, laser light is greatly influenced by atmosphere, and optical link capacity between satellite and ground station drastically changes according to weather condition. Therefore, we propose a new data traffic control method to use the network constructed by satellites which has Mass Storage Device effectively according to the condition of optical downlink between satellite and optical ground station. The effectiveness of the proposed method is evaluated with numerical result.
Peterson, James Stuart - One of the best experts on this subject based on the ideXlab platform.
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Automatic File Migration: Reload Queueing Simulations and Markov Models
1Co-Authors: Peterson, James StuartAbstract:128 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1984.Automatic migration of files to a Mass Storage Device can save substantial amounts of disk space while causing minimal user inconvenience.Measurements of the user inconvenience have generally been done in terms of demand curves or miss ratios, which are useful for measuring the overall performance of a migration system, but which convey little information about the real time delay a user suffers while waiting for a reload. For example, given a fixed number of files reloaded, user delay can vary greatly depending on whether his files are all on one media or on many, a condition strongly affected by the migration policy. In addition, delay is strongly influenced by the characteristics of the Mass Storage Device, such as media size, mount time, etc., and by the queuing policy. Using data taken from a real system, we are able to simulate the effects of the media assignment policy, the migration policy, Mass Storage characteristics, and the queuing policy on user delay. Results will be presented for both the CDC 38500 and the proposed Phillips optical disk.The user inconvenience can also be measured from the miss ratio, which depends strongly on the interaction between the migration policy and the file access patterns. We have developed a mathematical model of the migrate/access interactions and evaluated its accuracy using three file access trace databases varying in length from 233 to 384 days. To improve the accuracy of the model we have developed a method for measuring the locality of reference present in the file access traces. This model can be used either by itself or in conjunction with the user delay study to estimate system performance from a relatively small amount of new data.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD
Yuichi Kawamoto - One of the best experts on this subject based on the ideXlab platform.
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an efficient utilization of intermittent surface satellite optical links by using Mass Storage Device embedded in satellites
Performance Evaluation, 2015Co-Authors: Kazuma Kaneko, Yuichi Kawamoto, Hiroki Nishiyama, Nei Kato, Morio ToyoshimaAbstract:Recently, earth observation system by using satellite network has attracted much attention due to its wide coverage and disaster resistance. Although the system is useful for collecting various data, which have an effect on a natural disaster, ecology and so forth, earth observation satellite hardly send the collected observation data to the ground station. This is because that the earth observation satellite needs to orbit near surface of the earth to get high-precision data, and it limited the time that can be used to send the observed data traffic to the ground station. Additionally, the amount of the observed data drastically increase in these days. Thus, we focus on the data relay satellite using optical communication in this network. By relaying observed data to traffic to the relay satellite, which has geostationary orbit, it is possible to increase the chance of sending data for the observation satellite due to the wide coverage of the relay satellite. In addition, laser light that is used in optical communication in satellite network has high frequency and it can deliver large data compared with radio wave. However, laser light is greatly influenced by atmosphere, and optical link capacity between satellite and ground station drastically changes according to weather condition. Therefore, we propose a new data traffic control method to use the network constructed by satellites which has Mass Storage Device effectively according to the condition of optical downlink between satellite and optical ground station. The effectiveness of the proposed method is evaluated with numerical result.