• Title/Summary/Keyword: SOC testing

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An Efficient Test Access Mechanism for System On a Chip Testing (시스템 온 칩 테스트를 위한 효과적인 테스트 접근 구조)

  • Song, Dong-Seop;Bae, Sang-Min;Gang, Seong-Ho
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.39 no.5
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    • pp.54-64
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    • 2002
  • Recently System On a Chip(SoC) design based on IP cores has become the trend of If design To prevent the testing problem from becoming the bottleneck of the core-based design, defining of an efficient test architecture and a successful test methodology are mandatory. This paper describes a test architecture and a test control access mechanism for SoC based on IEEE 1149.1 boundary,scan. The proposed SoC test architecture is fully compatible with IEEE P1500 Standard for Embedded Core Test(SECT), and applicable for both TAPed cores and Wrapped cores within a SOC with the same test access mechanism. Controlled by TCK, TMS, TDI, and TDO, the proposed test architecture provides a hierarchical test feature.

A study of charge and discharge strategy analysis on HEV battery under urban dynamometer driving schedule (도시운전모드 하에서 HEV 배터리 충.방전 전략 분석에 대한 연구)

  • Kim, Seong-Gon;Jeong, Ki-Yun;Yang, In-Beom;Kim, Deok-Jin;Lee, Chun-Beom
    • Proceedings of the KIEE Conference
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    • 2007.10c
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    • pp.247-249
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    • 2007
  • Urban dynamometer driving schedule(FTP-75 mode) plays very significant role on automotive emission test, due to reference point. The overall system energy efficiency of a HEV(Hybrid Electric Vehicle) is highly dependent on the energy management strategy employed. An energy source is the heart of a HEV. In order to applicable to a vehicle component, it must be need to real world test result. But, the present state of things have numerous problems. In this paper, be studied performed based on HEV simulation software in virtual world and chassis dynamometer test in real world and the result make a comparative. Toyota Prius vehicle was adapted as a modeling and real testing to evaluate the hybrid components and energy balancing management. The point at issue is voltage and current analysis for HEV battery SOC(State of Charge), and verification for energy.

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An Efficient Technique to Improve Compression for Low-Power Scan Test Data (저전력 테스트 데이터 압축 개선을 위한 효과적인 기법)

  • Song, Jae-Hoon;Kim, Doo-Young;Kim, Ki-Tae;Park, Sung-Ju
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.43 no.10 s.352
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    • pp.104-110
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    • 2006
  • The huge test data volume, test time and power consumption are major problems in system-on-a-chip testing. To tackle those problems, we propose a new test data compression technique. Initially, don't-cares in a pre-computed test cube set are assigned to reduce the test power consumption, and then, the fully specified low-power test data is transformed to improve compression efficiency by neighboring bit-wise exclusive-or (NB-XOR) scheme. Finally, the transformed test set is compressed to reduce both the test equipment storage requirements and test application time.

A randomized controlled trial of an individualized nutrition counseling program matched with a transtheoretical model for overweight and obese females in Thailand

  • Karintrakul, Sasipha;Angkatavanich, Jongjit
    • Nutrition Research and Practice
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    • v.11 no.4
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    • pp.319-326
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    • 2017
  • BACKGROUND/OBJECTIVE: Effective weight reduction remains a challenge throughout the world as the prevalence of obesity and its consequences are increasing. This study aimed to determine the effects of an individualized nutrition counseling program (IC) matched with a transtheoretical model (TTM) for overweight and obese subjects. SUBJECTS/METHODS: Fifty overweight and obese subjects aged 19-60 years with a body mass index ${\geq}23kg/m^2$ were enrolled in the weight reduction study. They were randomized into two groups: Intervention group received an IC matched with a TTM; control group received an educational handbook. Body weight (BW), body fat (BF), waist circumference (WC), waist to height ratio (WHtR), stages of change (SOC), processes of change (POC), food intake, and physical activity (PA) were assessed at baseline and at 4, 8, and 12 weeks after program initiation in both groups. All data were analyzed by intention-to-treat, using SPSS software for hypothesis testing. RESULTS: Forty-five female subjects were included in the 12-week trial at Ramkhamhaeng Hospital, Bangkok, Thailand. The results showed significant weight loss ($1.98{\pm}1.75kg$; 3% loss of initial weight) in the intervention group at 12 weeks, compared to a $0.17{\pm}1.67kg$ loss in the control group. There were significant differences between intervention and control groups in BF mass ($-1.68{\pm}1.78$, $-0.04{\pm}1.62kg$); percentage BF ($-1.54{\pm}2.11$, $0.08{\pm}2.05$); WC ($-5.35{\pm}3.84$, $0.13{\pm}3.23cm$); WHtR ($-0.0336{\pm}0.02$, $-0.0004{\pm}0.02$), and energy consumption ($-405.09{\pm}431.31$, $-74.92{\pm}499.54kcal/day$) in the intervention and control groups, respectively. Intragroup SOC was improved in both groups. The POC for the weight management action (WMA) process was significantly different with POC scores increasing by $16.00{\pm}11.73$ and $7.74{\pm}14.97$ in the intervention and the control groups, respectively. PA level did not change in either group. CONCLUSIONS: The IC matched with a TTM resulted in reductions in BW, BF, and WC, thus reducing likely health risks by decreasing energy intake and inducing positive behavior changes while enhancing the WMA process.

Evaluation of Asphalt Emulsions Curing and Adhesive Behavior used in Asphalt Pavement Preservation (Surface Treatments) (아스팔트 도로포장 유지보수(표면처리)용 유화아스팔트의 양생 및 점착거동특성 평가)

  • Im, Jeong Hyuk;Kim, Y. Richard
    • International Journal of Highway Engineering
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    • v.16 no.6
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    • pp.39-50
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    • 2014
  • PURPOSES : The objective of this study is to evaluate the curing and adhesive behavior of asphalt emulsions including polymer-modified emulsions for chip seals and fog seals. METHODS : For the laboratory testing, the evaporation test, the bitumen bond strength (BBS) test, and the Vialit test are used. Also, the rolling ball test and the damping test are employed to evaluate the curing properties of the fog seal emulsions. In order to conduct all the tests in controled condition, all test procedures are performed in the environmental chamber. The CRS-2L and the SBS CRS-2P emulsions are used as a polymer-modified emulsion, and then unmodified emulsion, the CRS-2, is compared for the evaluation of chip seal performance. For the fog seal performance evaluation, two types of polymer-modified emulsions (FPME-1 and FPME-2) and one of unmodified emulsion, the CSS-1H, are employed. All the tests are performed at different curing times and temperatures. RESULTS AND CONCLUSIONS : Overall, PMEs show better curing and adhesive behavior than non-PMEs regardless of treatments types. Especially, the curing and adhesive behavior of PMEs is much better than non-PMEs before 120 minutes of curing time. Since all the test results indicate that after 120 minutes of curing time the curing adhesive behavior of emulsions, the early curing time, i.e., 120 minutes, plays an important role in the performance of chip seals and fog seals.