Kengo Iijima

ORCID: 0009-0007-0210-5817
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About
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Research Areas
  • Cloud Data Security Solutions
  • Security and Verification in Computing
  • Advanced Data Storage Technologies
  • Distributed and Parallel Computing Systems
  • Radio Astronomy Observations and Technology
  • Superconducting and THz Device Technology
  • Cloud Computing and Resource Management
  • Advanced Malware Detection Techniques
  • Caching and Content Delivery
  • Scientific Computing and Data Management
  • Cosmology and Gravitation Theories
  • Parallel Computing and Optimization Techniques
  • Astronomy and Astrophysical Research
  • Sarcoma Diagnosis and Treatment
  • Advanced Measurement and Metrology Techniques
  • Cryptography and Data Security
  • Adaptive optics and wavefront sensing
  • Cloud Computing and Remote Desktop Technologies
  • Mathematics, Computing, and Information Processing
  • Calibration and Measurement Techniques
  • Network Security and Intrusion Detection
  • Immunodeficiency and Autoimmune Disorders

The University of Tokyo
2022-2023

National Institute of Advanced Industrial Science and Technology
2005-2012

Memory deduplication shares same-content memory pages and reduces the consumption of physical memory. It is effective on environments that run many virtual machines with same operating system. deduplication, however, vulnerable to disclosure attacks, which reveal existence an application or file another machine. Such attack takes advantage a difference in write access times deduplicated are re-created by Copy-On-Write. In our experience KSM (kernel samepage merging) KVM machine, could detect...

10.1145/1972551.1972552 article EN 2011-04-10

For cosmic microwave background (CMB) polarization observations, calibration of detector angles is essential. We have developed a fully remote controlled system with sparse wire grid that reflects linearly polarized light along the direction. The new feature remote-controlled for regular calibration, which has not been possible in calibrators past experiments. control can be achieved by two electric linear actuators load or unload into position centered on optical axis telescope between time...

10.1063/5.0175099 article EN Review of Scientific Instruments 2023-12-01

Memory deduplication improves the utilization of physical memory by sharing identical blocks data. Although is most effective when many virtual machines with same operating systems run on a CPU, cross-user covert channel and causes serious disclosure attack. It reveals existence an application or file another machine. The difference in write access time deduplicated pages that are re-created Copy-On-Write, but it has some interferences caused execution environments. This paper indicates...

10.1587/transfun.e96.a.215 article EN IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences 2012-12-31

We developed 1CD Linux which shows the benefit of trusted computing. It includes Trusted Boot and Platform Trust Services, use a secure chip "TPM" are hardware rooted trust. The integrity platform vulnerability packages verified by remote attestation. Union File System, keeps keys TPM updated applications for next boot time. User can customize OS verify vulnerability. also offer virtual machine "Xen-HVM" supportsa TPM. does not depend on physical makes possible to try feasibility computing...

10.1109/aptc.2008.23 article EN 2008-10-01

KNOPPIX is a bootable CD with collection of GNU/Linux software. very convenient but it requires downloading 700MB iso image and burning CD-ROM when renewed. In order to solve this problem we made SFS-KNOPPIX which boots from Internet SFS (Self-certifying File System). SFSKNOPPIX 20MB boot-loader Linuxkernel miniroot. Root file system obtained at boot time. It enables change root makes easy try new version KNOPPIX. paper describe the detail its performance.

10.1109/nca.2005.47 article EN 2005-01-01

For cosmic microwave background (CMB) polarization observations, calibration of detector angles is essential. We have developed a fully remote controlled system with sparse wire grid that reflects linearly polarized light along the direction. The new feature remote-controlled for regular calibration, which has not been possible in calibrators past experiments. control can be achieved by two electric linear actuators load or unload into position centered on optical axis telescope between time...

10.48550/arxiv.2309.02035 preprint EN other-oa arXiv (Cornell University) 2023-01-01

This conference presentation was prepared for the Millimeter, Submillimeter, and Far-Infrared Detectors Instrumentation Astronomy XI at SPIE Astronomical Telescopes + Instrumentation, 2022.

10.1117/12.2629944 article EN Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022-07-16
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