• Title/Summary/Keyword: Memory test

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Clothing Memory in the Apparel Purchase Behavior (의복 구매 행동에 영향을 미치는 의복 관련 기억)

  • 유연실;이은영
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.7
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    • pp.982-992
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    • 2002
  • The purpose of this study is to investigate the clothing memory which affects apparel purchase behavior. The construction of clothing memory, the relationship between clothing memory and apparel purchase behavior, and the difference of clothing memory among persons by demographic variables are examined 746 female apparel consumers answer the questionnaire and data are analyzed by factor analysis, canonical correlation, Pearson correlation, and t-test. The result of this study are as follows; 1. There are three dimensions in the clothing memory which memory apparel purchase behavior; general memory about clothing, memory of appropriate clothing for oneself and memory of apparel purchase. 2. nothing memory affects apparel purchase behavior. General memory about clothing plays the most important role in the apparel purchase behavior especially in the amount of apparel purchase. 3. Unmarried young women with high income, high education level, and decent job have large amount of clothing memory.

FSM-based Programmable Built-ln Self Test for Flash Memory (플래시 메모리를 위한 유한 상태 머신 기반의 프로그래머블 자체 테스트)

  • Kim, Ji-Hwan;Chang, Hoon
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.44 no.6 s.360
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    • pp.34-41
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    • 2007
  • We popose a programmed on-line to FSM-based Programmable BIST(Buit-In Self-Test) with selected command, to select a test algorithm from a predetermined set of algorithms that are built in the Flash memory BIST. Thus, the proposed scheme greatly simplifies the testing process. Besides, the proposed FSM-based Programmable BIST is more efficient in terms of circuit size and test data to be applied, and it requires less time to configure the Flash memory BIST. We also will develop a programmable Flash memory BIST generator that automatically produces Verilog code of the proposed BIST architecture for a given set of test algorithms. If experiment the proposed method, the proposed method will achieves a good flexibility with smaller circuit size compared with previous methods.

A Parallel Structure of SRAMs in embedded DRAMs for Testability (테스트 용이화를 위한 임베디드 DRAM 내 SRAM의 병열 구조)

  • Gook, In-Sung;Lee, Jae-Min
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.3 no.3
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    • pp.3-7
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    • 2010
  • As the distance between signal lines in memories of high density ICs like SoCs decreases rapidly, failure occurs more frequently and effective memory test techniques are needed. In this paper, a new SRAM structure is proposed to decrease test complexity and test time for embedded DRAMs. In the presented technique, because memory test can be handled as a single port testing and read-write operation is possible at dual port without high complexity, test time can be much reduced.

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Built-In Self Repair for Embedded NAND-Type Flash Memory (임베디드 NAND-형 플래시 메모리를 위한 Built-In Self Repair)

  • Kim, Tae Hwan;Chang, Hoon
    • KIPS Transactions on Computer and Communication Systems
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    • v.3 no.5
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    • pp.129-140
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    • 2014
  • BIST(Built-in self test) is to detect various faults of the existing memory and BIRA(Built-in redundancy analysis) is to repair detected faults by allotting spare. Also, BISR(Built-in self repair) which integrates BIST with BIRA, can enhance the whole memory's yield. However, the previous methods were suggested for RAM and are difficult to diagnose disturbance that is NAND-type flash memory's intrinsic fault when used for the NAND-type flash memory with different characteristics from RAM's memory structure. Therefore, this paper suggests a BISD(Built-in self diagnosis) to detect disturbance occurring in the NAND-type flash memory and to diagnose the location of fault, and BISR to repair faulty blocks.

Design of an Automated Testing Tool to Detect Dynamic Memory Access Errors in C Programs (C언어 기반 프로그램의 동적 메모리 접근 오류 테스트 자동화 도구 설계)

  • Cho, Dae-Wan;Oh, Seung-Uk;Kim, Hyeon-Soo
    • Journal of KIISE:Software and Applications
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    • v.34 no.8
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    • pp.708-720
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    • 2007
  • Memory access errors are frequently occurred in computer programs written in C programming language [1,2]. Accordingly, a number of research works have suggested a wide variety of methods to detect such errors automatically. However, they have one or more of the following problems: inability to detect all memory errors, changing the memory allocation mechanism, and excessive performance overhead. To cope with these problems, in this paper we suggest a new and automated tool to detect dynamic memory access errors in C programs.

MTA(Memory TestAble) Code for Testing in Semiconductor Memories (반도체 메모리의 테스트를 위한 MTA(Memory TestAble code)코드)

  • 이중호;조상복
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.31A no.8
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    • pp.111-121
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    • 1994
  • This paper proposes a memory testable code called MTA(Memory TestAble) code which is based on error correcting code technique for testing functional faults in semiconductor memories. The characteristics of this code are analyzed and compared with those of conventional codes. The developed decoding technique for this code can reduce the decoder circuits up to 70% and obtain two-times faster decoding speed than other codes such as hamming code or Hsiao code. The MTA code is eccectively applicable to parallel testing of semiconductor memories because it has the same information length and parity length. It can detect from single error functional faults to triple error in semiconductor memories.

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Ulmi Cortex Ameliorates Scopolamine-induced Memory Impairments in Mice. (스코폴라민으로 유도된 Mice에서 유근피(楡根皮)(Ulmi Cortex)의 기억력 개선 효과)

  • Kim, Eung-Gyu;Roh, Seong-Soo
    • The Korea Journal of Herbology
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    • v.37 no.4
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    • pp.39-48
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    • 2022
  • Objectives : In the present study, we assessed the effects of water extract of Ulmus davidiana(UED) on the learning and memory impairments induced by scopolamine in mice through its favorable acetylcholinesterase (AChE) activity and antioxidant effect. Methods : The memory and cognitive enhancing effect of the UDE was investigated using a passive avoidance test, the Morris water maze test and Y-maze test in mice. In addition, to examine the mechanism of UDE using acetylcholinesterase (AChE) and antioxidant activity. Results : The water extract of UDE (100, and 200 mg/kg) significantly reversed the scopolamine-induced cognitive impairments in the passive avoidance test (P < 0.05). Moreover, UDE (100, and 200 mg/kg) also improved escape latencies in training trials and increased swimming times and distances within the target zone of the Morris water maze (P < 0.05). On the Y-maze test, UDE (100, and 200 mg/kg) also significantly reversed scopolamine-induced cognitive impairments in mice (P < 0.05). In an in vitro study, UDE was found to inhibit acetylcholinesterase, changes in neurotrophic factor (CREB), and antioxidant activity in a dose-dependent manner. Conclusions : The water extract of UDE dramatically possesses the anti-amnestic and cognitive-enhancing activities related to the memory processes, and these activities were parallel to treatment duration and dependent on the learning models. These results suggest that the administration of UDE enhances learning and memory, and that this effect is partially mediated by ERK-CREB-BDNF signaling and the survival of immature neurons.

A Comparative Study of Memory Improving Effects of Stachys Rhizome and Lycopi Rhizome on Scopolamine-induced Amensia in mice (시판 초석잠 기원식물의 기억력개선효과 비교연구)

  • Lee, Shin Woo;Jung, Tae-Hong;Shin, Yong-Wook
    • The Korea Journal of Herbology
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    • v.28 no.5
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    • pp.69-77
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    • 2013
  • Objectives : The purpose of this study was to characterize the effect of the Ethanolic extract of Stachys sieboldii and Lycopus lucidus on the learning and memory impairments induced by scopolamine. Methods : The genetic difference of Stachys sieboldii and Lycopus lucidus were observed with RAPD analysis. The cognition-enhancing effect of Stachys sieboldii and Lycopus lucidus was investigated using a passive avoidance test, Y-maze test and the Morris water maze test in mice. Drug-induced amnesia was induced by treating animals with scopolamine (1 mg/kg, i.p.). Results : As a result of RAPD analysis, Stachys sieboldii and Lycopus lucidus Radix was found to be genetically different and The results of learning memory analysis showed that Stachys sieboldii extract-treated group (500 mg/kg, p.o.) and the tacrine-treated group (10 mg/kg, p.o.) significantly ameliorated scopolamine-induced amnesia based on the Passive avoidance Y-maze test and Water maze test. And these results are same manner in DPPH radical scavenger effect and Acetylcholineseterase inhibition effect. These results suggest that Stachys sieboldii extract maybe a useful cognitive impairment treatment, and its beneficial effects are depending on the origin plants. Conclusions : Commercially available Stachys sieboldii Radix consists of two original plant, one of them people misuse. To clarify the origin of the plant Memory tests were performed. These results suggest that 80% Ethanol extract of Stachys sieboldii showed significant anti-amnestic and cognitive-enhancing activities related to the memory processes, and these activities were parallel to treatment duration and dependent of the learning models.

A Comparative Study of Memory Improving Effects of Taraxaci herba on Scopolamine-induced Amnesia in Mouse (포공영 기원식물의 mouse 기억력 개선효과 비교)

  • Sohn, Moon-Ki;Shin, Yong-Wook
    • The Korea Journal of Herbology
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    • v.27 no.5
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    • pp.27-35
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    • 2012
  • Objectives : The purpose of this study was to characterize the effect of the fraction of Taraxacum officinale and T.coreanum on the learning and memory impairments induced by scopolamine. Methods : The cognition-enhancing effect of Taraxacum officinale and T.coreanum was investigated using a passive avoidance test, the Morris water maze test and Y-maze test in mice. Drug-induced amnesia was induced by treating animals with scopolamine (1 mg/kg, i.p.). Results : The results showed that the Aug harvested T.offiicinale extract-treated group (200 mg/kg, p.o.) and the tacrine-treated group (10 mg/kg, p.o.) significantly ameliorated scopolamine-induced amnesia based on the Passive avoidance Y-maze test and Watermaze test. And these results are same manner in DPPH radical scavenger effect and Acetylcholineseterase inhibition effect. Conclusions : These results suggest that Taraxacum officinale extract maybe a useful cognitive impairment treatment, and its beneficial effects are depending on the collecting time and origin plants. As a result, Taraxacum officinale harvested in August improve memory most.

The Effect of Femented Platycodon grandiflorum on the Memory Impairment of Mice (발효에 의한 길경추출물의 인지기능 개선 효능)

  • Kim, Tae-Yeon;Shin, Yong-Wook
    • The Korea Journal of Herbology
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    • v.28 no.2
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    • pp.25-31
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    • 2013
  • Objectives : The purpose of this study was to characterize the effect of the Ethanolic extracts of Platycodon grandiflorum and its permented production the learning and memory impairments induced by scopolamine. Methods : The cognition-enhancing effect of Platycodon grandiflorum and its permented production were investigated using a passive avoidance test, the Morris water maze test and Y-maze test in mice. Drug-induced amnesia was induced by treating animals with scopolamine (1 mg/kg, i.p.). Results : The results showed that the Permented Platycodon grandiflorum extract-treated group (100 mg/kg, p.o.) and the tacrine-treated group (10 mg/kg, p.o.) significantly ameliorated scopolamine-induced amnesia based on the Passive avoidance Y-maze test and Water maze test. And these results are same manner in DPPH radical scavenger effect and Acetylcholineseterase inhibition effect. Conclusions : These results suggest that 80% Ethanol extract of fermented P.grandiflorum showed significant anti-amnestic and cognitive-enhancing activities related to the memory processes, and these activities were parallel to treatment duration and dependent of the learning models.