Shûichi Ichikawa
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View article: Eicosapentaenoic Acid Level Predicts Long-Term Survival and Cardiovascular or Limb Event in Peripheral Arterial Disease
Eicosapentaenoic Acid Level Predicts Long-Term Survival and Cardiovascular or Limb Event in Peripheral Arterial Disease Open
Objectives: We examined the relationship between plasma eicosapentaenoic acid (EPA) level and long-term all-cause death (ACD) and cardiovascular or limb events in patients with peripheral arterial disease (PAD). Method: We performed a pros…
View article: Expansion of pointing range using phase shift array for ultrasonic positioning system
Expansion of pointing range using phase shift array for ultrasonic positioning system Open
In this study, we investigated the introduction of phased shift array transmitters for expanding the positioning range of ultrasonic positioning systems. The result of numerical simulation shows the number of transmitters to three or more,…
View article: Evaluation of a Random Number Generator based on an Internal Linear Feedback Shift Register
Evaluation of a Random Number Generator based on an Internal Linear Feedback Shift Register Open
A previous study presented a random number generator based on the fluctuation in the sampling interval of an internal linear feedback shift register (LFSR). They reported that the derived random numbers passed the Diehard test; however, th…
View article: Evaluation of Random Number Generator Utilizing Weather Data and LFSR
Evaluation of Random Number Generator Utilizing Weather Data and LFSR Open
Entropy sources (e.g., physical phenomena) are essential for true random number (TRN) generation. An unpredictable random number (URN) generator was previously proposed, which uses processor internal registers as its entropy sources. Anoth…
View article: Evaluation of Special Instruction Implementations in Soft Processors for High-level Synthesis
Evaluation of Special Instruction Implementations in Soft Processors for High-level Synthesis Open
It is important to protect the intellectual property (IP) of embedded software, which contains precious know-hows and trade secrets. As hardware is more difficult to analyze than software, it is possible to protect IP by implementing it in…
View article: Lipoprotein(a) is a Promising Residual Risk Factor for Long-Term Clinical Prognosis in Peripheral Arterial Disease
Lipoprotein(a) is a Promising Residual Risk Factor for Long-Term Clinical Prognosis in Peripheral Arterial Disease Open
Objectives: We investigated the relationship between plasma lipoprotein(a) [Lp(a)] level and long-term prognosis, cardiovascular events, or pure leg events (LE) in patients with peripheral arterial disease (PAD). Materials and Methods: We …
View article: Long-Term Prognosis and Predictive Risk Factors for Polyvascular Disease in Patients with Peripheral Arterial Disease
Long-Term Prognosis and Predictive Risk Factors for Polyvascular Disease in Patients with Peripheral Arterial Disease Open
Background: The aim of the current study was to assess fifteen-year life expectancy, cardiovascular events, fate of the limb, and risk factors with or without polyvascular disease in patients with Peripheral Arterial Disease (PAD). Methods…
View article: Message from the CANDAR 2021 Organizers
Message from the CANDAR 2021 Organizers Open
Message from the CANDAR 2021 OrganizersOn behalf of the Organizing Committee, we cordially welcome you to the Ninth International Symposium on Computing and Networking (CANDAR 2021), which was initially planned to take place in Matsue, Jap…
View article: Message from the Organizers
Message from the Organizers Open
Message from the CANDARW 2021 OrganizersOn behalf of the Organizing Committee, we cordially welcome you to the Ninth International Symposium on Computing and Networking (CANDAR 2021), which was initially planned to take place in Matsue, Ja…
View article: Influence of Microalbuminuria on Long-Term Survival and Cardiovascular or Limb Events in Peripheral Arterial Disease
Influence of Microalbuminuria on Long-Term Survival and Cardiovascular or Limb Events in Peripheral Arterial Disease Open
Objective: This study aimed to examine the relationship between microalbuminuria and long-term life expectancy or limb events in patients with peripheral arterial disease (PAD). Materials and Methods: A prospective cohort study was perform…
View article: Random Number Generation from Internal LFSR and Fluctuation of Sampling Interval
Random Number Generation from Internal LFSR and Fluctuation of Sampling Interval Open
An unpredictable random number generator (URNG) adopts a deterministic algorithm with volatile internal states of a microprocessor, which makes the output of the URNG practically unpredictable. This study examines the URNG design proposed …
View article: Experimental Implementation of Fault Tolerance Using Dynamic Partial Reconfiguration on Xilinx Zynq-7000 SoC
Experimental Implementation of Fault Tolerance Using Dynamic Partial Reconfiguration on Xilinx Zynq-7000 SoC Open
In our previous paper, the authors proposed a fault tolerant system that adopts field programmable gate arrays (FPGA) with dynamic partial reconfiguration (DPR), based on autonomous control of reconfiguration. This study presents an experi…
View article: The Geriatric Nutritional Risk Index Predicts Long-Term Survival and Cardiovascular or Limb Events in Peripheral Arterial Disease
The Geriatric Nutritional Risk Index Predicts Long-Term Survival and Cardiovascular or Limb Events in Peripheral Arterial Disease Open
GNRI is an independent predictor for OS, MACE, and MACLE in patients with PAD.
View article: Improved Parameter Estimation Method for Bilateral Filter with Distribution Distance
Improved Parameter Estimation Method for Bilateral Filter with Distribution Distance Open
Makishi et al. (2017) proposed a method that estimates the parameters for a bilateral filter, based on the distribution distance of images. This study proposes an improved version of the Makishi et al. (2017) method, which includes three n…
View article: FPGA Implementation of Undersea Video Transmission System for Visible Light Communication
FPGA Implementation of Undersea Video Transmission System for Visible Light Communication Open
The mainstream of conventional underwater radio communication technology is acoustic communication; however, there is a problem in that the communication speed is limited. On the other hand, optical wireless communication technology has be…
View article: Performance Evaluation of Parallel SAT Solver on Xeon Phi Processor
Performance Evaluation of Parallel SAT Solver on Xeon Phi Processor Open
The satisfiability (SAT) problem is widely applicable to various industrial problems, such as formal verification of industrial systems. This study presents the performance evaluation of a parallel SAT solver (Glucose Syrup) on Intel Xeon …
View article: Research on Fault Tolerant Processor using Dynamic Reconfiguration
Research on Fault Tolerant Processor using Dynamic Reconfiguration Open
In this paper, we propose a reconfigurable fault tolerant architecture that can recover from failure status with spare space. Recently, progress in semiconductor technology has been remarkable due to microfabrication of devices. The semico…
View article: Evaluation of Hardware Obfuscation Techniques using Obfuscation Tool oLLVM
Evaluation of Hardware Obfuscation Techniques using Obfuscation Tool oLLVM Open
Obfuscation is a method to conceal the structure and function of software. Obfuscator-LLVM (oLLVM) is a set of tools for software obfuscation, which is implemented as middle-end passes in an LLVM framework. This study investigates the hard…
View article: Asymptomatic cerebral infarction is a predictor of long-term survival and vascular or limb events in peripheral arterial disease
Asymptomatic cerebral infarction is a predictor of long-term survival and vascular or limb events in peripheral arterial disease Open
CI on CT was an independent predictor for mortality, CVE, SFS, MACE, and MACLE. Statins improved MACE and MACLE, but AF increased CVE and MACLE in patients with PAD.
View article: Evaluation of Register Number Abstraction for Enhanced Instruction Register Files
Evaluation of Register Number Abstraction for Enhanced Instruction Register Files Open
Instruction set randomization (ISR) is a cost-effective obfuscation technique that modifies or enhances the relationship between instructions and machine languages. An Instruction Register File (IRF), a list of frequently used instructions…
View article: A latch-latch composition of metastability-based true random number generator for Xilinx FPGAs
A latch-latch composition of metastability-based true random number generator for Xilinx FPGAs Open
Metastability of RS latches can be a source of entropy for true random number generators (TRNGs). This study presents a new composition of an RS latch using the latch functionality of storage elements of Xilinx FPGAs. Our TRNG is implement…
View article: Attenuation Model for Error Correction of Ultrasonic Positioning System
Attenuation Model for Error Correction of Ultrasonic Positioning System Open
Previously, the authors had proposed an indoor positioning system based on multiple frequencies of ultrasonic waves. This system had a systematic positioning error caused by the attenuation of both ultrasonic waves in air and signals in th…
View article: Improvement of distance measurement error by attenuation of ultrasonic transmitter and receiver signal for the ultrasonic positioning system
Improvement of distance measurement error by attenuation of ultrasonic transmitter and receiver signal for the ultrasonic positioning system Open
We have been developed in ultrasonic positioning system that can get the position of target object in real time measurement. In the distance measurement experiment, it includes the measurement error by receiver signal attenuation for speak…
View article: Sub-optimal Parameter Estimation for Bilateral Filter using Distribution Distance
Sub-optimal Parameter Estimation for Bilateral Filter using Distribution Distance Open
A method that estimates the parameters for a bilateral filter, based on the distribution distance of the images, is proposed. This study presents a method to estimate a sub-optimal set of parameters in a reasonable execution time by using …
View article: A Virtual Cache for Overlapped Memory Accesses of Path ORAM
A Virtual Cache for Overlapped Memory Accesses of Path ORAM Open
Oblivious RAM (ORAM) is a technique to hide the access pattern of data to untrusted memory along with their contents. Path ORAM is a recent lightweight ORAM protocol, whose derived access pattern involves some redundancy that can be remove…
View article: Long-term survival and fate of the leg in <i>de novo</i> intermittent claudication
Long-term survival and fate of the leg in <i>de novo</i> intermittent claudication Open
Aims The long-term life expectancy and fate of the leg, including progression rate to critical limb ischaemia (CLI), were analysed in de novo patients with intermittent claudication (IC). Methods and results A prospective cohort study was …