2017, Vol.12, No.5

Journal of Knowledge Information Technology and Systems 2023 KCI Impact Factor : 0.89

pISSN : 1975-7700 / eISSN : 2734-0570
https://journal.kci.go.kr/kkits

The last level cache(LLC) is commonly managed using LRU policy. However, LRU has a high overhead cost of moving cache lines into the most recently used position whenever a cache line is accessed. Also, LRU is prone to cache pollution when a sequence of single-use memory accesses that are larger than the cache size is fetched from memory. Cache performance and efficiency can be improved if some subset of these reuse lines can reside in the cache longer. Previous schemes approach this by bypassing never reused lines(0-reused lines). But, sometimes they deliver no benefit due to the lack of never reused lines. This paper proposes a new mechanism that filters out not only 0-reused lines but also 1-reused lines and accurately predicts 0/1-reused lines from incoming lines. Filtering of 0/1-reused lines provides more opportunities to fit the working set into cache size. Our proposed scheme is evaluated using a simulation environment where its effectiveness and performance-improvement capabilities are demonstrated. We present experimental results showing miss rate and IPC(Instruction Per Cycle) comparison of the proposed scheme and OBM(Optimal Bypass Monitor) against LRU for SPEC CPU2006 benchmarks. The result shows that the proposed scheme and OBM can improve IPC by an average of 20.1% and 14.4%, respectively. And the proposed scheme reduces the miss rate by 20.6% compared to LRU.

Developmental disorder children commonly have difficulties in sustaining attention, understanding abstract concepts, and transferring of learning. Repeated training, simulation based learning, and experiential learning using five senses have been suggested as effective learning methods for enhancing skill acquisition and behavioral changes for developmental disorder children due to their cognitive and behavioral delay. The most important factor in educational systems for developmental disorder children is to develop educational tool which enhance their perceptual functioning through bodily sensations and motor skills. In this paper, we introduce an enhanced tangible UX-based educational system consists of a motion creating device and a motion input device and found that it is well operated by a user through experiments. A suspension module is fabricated by a 3D printer and is applied to the motion creating device to equally provide the weight to its four wheels. To investigate the trajectory of the developed motion creating device and its velocity, we construct an experimental environment. The experiment results clearly show that the developed tangible UX-based educational system creates motion along 8 directions and controls its velocity. It is suggested that the UX-based educational system is feasible for the educational systems for developmental disorder children. Follow-up studies with special education institutes will be conducted to examine educational effectiveness of suggested system for developmental disorder children.

The interesting thing is increasing about personal healthcare and an aging society. As a result, The POCT(Point-Of-Care Testing) market is growing rapidly. There are a variety of POCT devices, of which potentiostat is often used to measure precise components. Numerous potentiostats can be easily accessible. However, a portable potentiostat with the highly accurate sensor is not easily accessible. However, Potentiostat, which can be attached to a human body, has a limited range of measurement range. The high-sensitivity potentiostat developed in this study enables the measurement of multiple markers in the one chamber and the analysis data can be checked in real time. Also, It can be communication with a computer or smartphone by internal USB, Bluetooth or Serial port. and then The potentiostat developed the compact size (23㎜ x 40㎜) by minimizing the number of components through FPGA development. and then We checked the high reliability(correlation coefficient: 0.94) and row detection limited(20nA). We make the sensor by using FR-4 material and then We found the stable pattern in the variable sensor pattern. It can be useful change the pattern and connect to the line. Also, It doesn’t break from high elasticity. Our device will have a positive influence on POCT and potentiostat market.