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Kanda, Hideyuki,Sugaya, Nagisa,Takahashi, Kenzo,Mizushima, Shunsaku,Koyama, Kikuo Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
Background: During and after the Fukushima nuclear disaster (FND), many parents were concerned about the effects of radiation on the health of their children. Purpose: To clarify the factors that influenced general workers living with children and the effect of child age groups in implementing preventive behaviorsagainst radiation following the FND. Materials and Methods: A descriptive study of preventive behaviors among general workers was carried out 3-5 months after the nuclear disaster. The subjects were 1,394 regular workers, who took part in radiation seminars run by the Fukushima Occupational Health Promotion Center between July and September, 2011. In total, 1,217 responses were submitted, of which 1,110 were eligible for the present study. This anonymous questionnaire survey inquired about the presence and age of children in the household and about radiation preventive behavior implemented after the FND. The contribution of each variable was assessed by logistic regression analysis. Results: General workers in Fukushima who lived with younger children performed more preventive behavior against radiation during and after the FND. In particular, both location-related and daily routines were practiced significantly more frequently (p<0.01) by workers living with a child in the age ranges of 0-6 (8 of 10 items) and 7-12 (5 of 10 items). Conclusions: This is the first study to assess the positive association between living with children by age group and increased preventive behavior against radiation implemented by general workers after the FND.
Mental Workload of In-vehicle Device Operation by Eye Gazing For Head-up Display
( Daiki Kanda ),( Yasuhiro Tsukamoto ),( Takafumi Asao ),( Satoshi Suzuki ),( Kentaro Kotani ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
When operating for information retrieval by in-vehicle device, we need to gaze at associative objects such as displays and in-vehicle control panels. This activity by gaze-based information retrieval may induce the risk of traffic accidents. In this study, a novel technique for reducing such risk using head-up display is introduced. The use of control panels shown in the head-up display can maintain the amount of attention toward traffic condition ahead of the vehicle. Onthe other hand, mental workload generated by using this novel technique has not been evaluated thus far. Therefore, this paper presents the results of evaluation for the mental workload generated by the proposed technique by comparing with the technique used for conventional manual operation, using NASA-TLX during performing peripheral detection task.
Shrink Generator-based Strong PUF Architecture with Improved Uniqueness and Reliability on an FPGA
Guard Kanda,Kwangki Ryoo 대한전자공학회 2023 Journal of semiconductor technology and science Vol.23 No.1
Silicon-based Physically Unclonable Functions (PUFs) are a source of physical security primitive that is either implemented on ASICs or FPGAs. A class of these security primitives that provide an exponentially large set of Challenge-Response Pairs (CRPs) is termed Strong PUF. That notwithstanding, the Arbiter and Feedforward Arbiter PUFs which are traditionally Strong PUFs, are not suitable for FPGA implementation. In this paper, a newly proposed PUF architecture that improves on the existing Configurable Ring Oscillator (CRO) PUF by increasing its dynamic configurability and its level of entropy is presented. To maintain the exponentially large set of CRPs, the Shrink Generator is applied to the traditionally Weak CRO-PUF. The proposed design is implemented and tested on a spartan-6 FPGA board using the Xilinx ISE tool. The proposed architecture demonstrates a uniqueness of 50.01% and is 96.43% reliable.