• Title/Summary/Keyword: memories

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Electrochemical Characteristics of EDLCs with Selectivity Factors for the Organic Electrolyte (유기용매전해질에 따른 전기이중층캐패시터의 전기화학적 특성)

  • Lee, Sun-young;Ju, Jeh-Beak;Sohn, Tae-Won;Cho, Won-Il;Cho, Byung-Won
    • Journal of the Korean Electrochemical Society
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    • v.8 no.1
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    • pp.1-5
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    • 2005
  • Electric double layer capacitors(EDLCS) based on the charge stored at the interface between a hi팀 surface area carbon electrode and an organic electrolyte solution are widely used as a maintenance-free power source for IC memories and microcomputers. The achievement of the excellent performance of the capacitor requires an electrolyte solution which provides high conductivities over a wide temperature range and good electrochemical stabilities to allow the capacitor to be operated at high voltage. The electrochemical capacitor using a carbon material as electrodes and using an organic electrolyte with $1M-LiPF_6$ in PC-GBL-DEC(volume ratio 1:1:2) has specific capacitance of 64F/g.

Performance Analyses of Instruction Fetch Models Considering Cache Miss and Branch Misprediction (캐쉬 미스와 분기예측 실패를 고려한 명령어 페치 모델의 성능분석)

  • Kim, Seon-Mo;Jeong, Jin-Ha;Choe, Sang-Bang
    • Journal of KIISE:Computer Systems and Theory
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    • v.28 no.12
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    • pp.685-697
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    • 2001
  • Cache memories are small fast memories used to temporarily hold the contents of main memory that are likely to be referenced by processors so as to reduce instruction and data access time. In this paper, we represent analytical models of instruction fetch process for four types of instruction cache structures that can be used for superscalar processors. In the models, we define various kinds of architectural parameters and take cache miss and branch misprediction into consideration. To prove the correctness of the proposed models, we performed extensive simulations and compared the results with the analytical models. Simulation results showed that the proposed model can estimate the instruction fetch rate accurately within 10% error in most cases. Both analytical model and simulation show that the increase of cache misses reduces the instruction fetch rate more severely than that of branch misprediction does. However, the analytical model can explain the causes of performance degradation which cannot be uncovered by the simulation method only. The model is also able to provide exact relationship between cache miss and branch misprediction for instruction fetch analysis.

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A Study of the Narrative Structure of ″Travel in Mujin″ (무진기행의 서술구조 연구)

  • 정연희
    • Lingua Humanitatis
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    • v.1 no.2
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    • pp.179-196
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    • 2001
  • According to Formalist theory, form is not separate from content. Form does not merely convey or express content but can itself produce meaning. The close correlation of the narrative structure, more specifically the time structure of the narrative, and the narrative style of Kim Seung-Ok′s short story′"Travel in Mujin" provides a good example of this argument. The story opens with the first-person narrator, currently living in the bustling city of Seoul, back in his small provincial home town Mujin, where he brings up memories that had been hitherto suppressed. The revived memories are ordered into the narrator′s present thought structure, in effect bridging the vast psychological rift between the lost past and the present. The narrator′s travel in Mujin thus becomes a psychological journey, and Mujin becomes a psychological space where the narrator can experience the continuity of his own being. The "narrating I" excludes the principles of reality from his narrative, concentrating on the inner thoughts, recollections, psychological experience, and the level of consciousness of the "narrated I." This narrative attitude or style expresses the narrator-protagonist′s acceptance and affirmation of the thoughts and actions occur in Mujin (which he had till now been resistant to). It is also an affirmation of the narrative act itself. Before the travel back to Mujin, the narrator-protagonist′s thoughts about his home town was ambivalent-an attitude originating from nostalgia, together with the narrator-protagonist′s ambivalent attitude toward his youthful past. It is a reflection of the narrator-protagonist′s desire for purity intermingled with a disdain for his enervated existence in Seoul. This ambivalence is resolved by the "I" of the narrative present, and Mujin enables him to come to a renewed affirmation of his life.

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Modernism, History, and Memoir-Writing in Ford Madox Ford (″소설가는 그 시대의 사학자이다″: 모더니즘과 포드 매독스 포드의 회고록 쓰기)

  • Hyungji Park
    • Lingua Humanitatis
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    • v.1 no.2
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    • pp.91-104
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    • 2001
  • Ford Madox Ford, the early twentieth-century writer most famous for his novel The Good Soldier, perceived his "business in life [as an] ... attempt to discover and to try to let you see where you stand." With this grand purpose in mind, Ford disregarded distinctions of genre in his prolific output of what we would consider novels, memoirs, literary criticism, travel writing, and history. Claiming that "the Novelist ... [is a] historian of his own time," Ford sought his own version of the "truth," a truth that was more faithful to his own subjective impressions than to verifiable "fact." Among these works that depict his age are a series of "memoirs" or "reminiscences," works published from the 1910s to the 1930s which carry out his Impressionistic purpose. What lies behind these memoirs is Ford′s view that his own individual history can be understood as his contemporary society′s collective history. This article explores Ford′s experimentation with boundaries of fact and fiction, and history and narrative, as he employs and expands the memoir form. In particular, 1 focus on two works, Memories and Impressions (1911) and It Was the Nightingale (1933), and Ford′s techniques in these memoirs, such as 1) the adoption of fictional personae from which to comment on his society at large and 2) the use of emblematic "parables" to encapsulate larger lessons of life within the minutiae of existence. Current theorists on the memoir form share interests in these questions of genre and of the social role of the memoir Nancy Miller, for instance, terms the memoir "the record of an experience in search of a community." This article engages these current discussions of the memoir genre by examining Ford′s early twentieth-century examples as innovative experiments that play with the boundaries between fiction and history, and personal impressions and collective truth.

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Area storage density of ideal 3-D holographic disk memories (이상적인 디스크형 3차원 홀로그래픽 메모리에서의 면적 저장밀도)

  • 장주석;신동학
    • Korean Journal of Optics and Photonics
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    • v.11 no.1
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    • pp.58-64
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    • 2000
  • Assuming that the performance of holographic storage media is ideal, we estimate the area storage density of disk-type holographic memories, when the method of either angle multiplexing, or rotational multiplexing, or both are used. The area storage density is strongly dependent on the f numbers (ratio of focal length to diameter) of both the Fourier transform lens in the signal arm, denoted by $F/#_2$, and the angle range over which the reference beam is incident (or, the equivalent f number corresponding to the angle range denoted by $F/#_1$). The area storage density is largely independent of the pixel pitch of the spatial light modulator when the Fourier plane holograms are recorded, while it is sensitive to the pixel pitch when the image plane holograms are recorded. In general, to obtain high area storage density, the Fourier or at least near Fourier plane holograms rather than the image plane holograms should be recorded. In addition, when the thickness of the recording materials are less than approximately $500\mu\extrm{m}$, rotational multiplexing gives higher area storage densities than angle multiplexing does. To increase the storage density further, however, it is desirable to use both of the two multiplexing methods in combination.nation.

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The Study on the Archives Held in Railroad Stations in Busan (부산지역 철도역 소장 기록의 잔존양태 분석)

  • Lee, Ju-Yeon;Kim, Hee-Young
    • Journal of Korean Society of Archives and Records Management
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    • v.11 no.1
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    • pp.299-326
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    • 2011
  • This paper surveyed records and archives which the railroad stations in Busan possesses and illustrated the status of them. Also we examined whether records and archives of railroad stations contain the memories of localities or not. We visited 17 railroad stations in Busan and we found that 1) the archives in railroad station are fugitive archives 2) the records or archives are classified into five categories, 'station's history', 'report on station-adjacent area', 'report of drive and transport', 'photos', and 'other materials' 3) the volume of such archives in 17 stations are different because of disposal or missing 4) Each archives in same category have same form. Especially the descriptions and images in 'station's history', 'report on station-adjacent area' represent much to memories of locality, but we also must examine the public records, private records related railroad station in Busan for documenting localities. To bridge the gap we suggest to collect oral records by relevant persons.

Design of a Cell Verification Module for Large-density EEPROM Memories (대용량 EEPROM 메모리 셀 검증용 모듈 회로 설계)

  • Park, Heon;Jin, RiJun;Ha, Pan-Bong;Kim, Young-Hee
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.2
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    • pp.176-183
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    • 2017
  • There is a problem of long erase and program times in testing large-density memories. Also, there is a need of testing the VT voltages of EEPROM cells at each step during the reliability test. In this paper, a cell verification module is designed for a 512kb EEPROM and a CG (control gate) driver is proposed for measuring the VT voltages of a split gate EEPROM having negative erase VT voltages. In the proposed cell verification module, asymmetric isolated HV (high-voltage) NMOS devices are used to apply negative voltages of -3V to 0V in measuring erase VT voltages. Since erasing and programming can be done in units of even pages, odd pages, or a chip in the test time reduction mode, test time can be reduced to 2ms in testing the chip from 4ms in testing the even and the odd pages.

Study on the meaning of Architectural Growth in Carlos Jim$\acute{e}$nez's "House and Studio" (카를로스 히메네즈의 'House and Studio'에 보이는 생장성(生長性)의 지역적 의미에 관한 연구)

  • Ahn, Joon-Suk
    • Journal of the Korean Institute of Rural Architecture
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    • v.14 no.2
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    • pp.11-18
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    • 2012
  • Carlos Jimenez's 'House and Studio' was self-designed to fully function as both a home and workplace. Since its establishment in 1983, the installation has been continuously updated for almost 30 years solely under the guidance of the owner's life occurrences and routine needs. The additions and alterations succeeding the building's erection were executed to incorporate small yet symbolic fragments of the resident's memories and life episodes. The particularity of the 'House and Studio' can be compared with other residential remodeling and expansion projects in regards to certain key aspects. These means of comparison include, but are not limited to, building strictly under the direction of a master plan of development vs. allowing natural adaptations that comply with the resident's needs, rapid development vs. gradual advancement, the ornamenting by exposing showy features vs. the enhancing by addition of modest natural components, sustainability vs. sustenance, systematic room divisions vs. ambiguous spatial organization, possession as a materialized asset vs. preservation as a recollection of memories, and finally the recognition as one example of signature architecture vs. the witnessing of a maturing animated shelter. The given propositions can be further explained with the comprehension of Erich Fromm's theory of the 'Having' mode and 'Being' mode, two mechanisms that categorize the essence of human life. The 'Having' mode is described by the human greed for wealth, power, and influence, whereas the 'Being' mode is comprised of compassion, joy, and productivity. Fromm's thesis applies to the general sense of human life, but the ideas can be narrowed to accommodate the architectural standpoint. In architecture, the 'Having' mode can be translated to be the conspicuous form-oriented and self-contained object. The 'Being' mode, on the other hand, is transposed as the more natural form, incorporating the needs of the owner before commercialization. The growth of Jimenez's 'House and Studio' can be perceived as an architectural suggestion to the overcoming of human indifference caused by fixation on the 'Having' mode.

Implementation of High Throughput LDPC Code Decoder for DVB-S2 (높은 throughput 성능을 갖는 DVB-S2 LDPC 부호의 복호기 구현)

  • Kim, Seong-Woon;Park, Chang-Soo;Hwang, Sun-Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.9A
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    • pp.924-933
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    • 2008
  • This paper proposes a novel LDPC code decoder architecture to improve throughput for DVB-S2, a second generation standard of ETSI for satellite broad-band applications. The proposed architecture clusters 360 bitnodes and checknodes into groups utilizing the property of IRA-LDPC code. Functional modules which perform calculations for bitnode groups and checknode groups have local memories and store the messages from the other type of functional modules connected by edges at their local memories. The proposed architecture can avoid memory conflicts by accessing stored messages sequentially, hence, increases throughput in the proposed DVB-S2 LDPC code decoder architecture. The proposed architecture was synthesized using the TSMC 90nm technology. Synthesis results show that throughput of the proposed architecture is improved by 104% and 478%, respectively, when compared with those of the architectures proposed by F. Kienle and J. Dielissen.

A Study on Design and Development Process of Narrative Archiving Policy : Focused on S-NAP of Seoul Metropolitan Archives (서사 기반 수집 실행지침의 설계와 개발절차 서울기록원의 S-NAP을 중심으로)

  • Lee, Kyung Nam;Lee, Hyeon Jung
    • The Korean Journal of Archival Studies
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    • no.65
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    • pp.199-226
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    • 2020
  • It is widely agreed that a documentation strategy that considers the social context of fragmented records is needed for documentation of social memories. This paper examined a new methodology named Seoul Narrative Archiving Policy(S-NAP) which was developed for the documentation of social memories in metropolitan areas. Also, the paper reviewed the applicability of S-NAP through the collection cases of Seoul Metropolitan Archives. The development process of the S-NAP is as follows. First, acquisition topic domains that cover an entire metropolitan region were developed. Next, implementation units(S-NAP) were designed through extensive data analysis that encompasses social, economic, culture, and art areas and reflects outcomes of regional studies. As a result, a total of nine acquisition topic domains, 61 parents S-NAP, and 184 children S-NAP were derived from the aforementioned methodology and methods. Finally, this paper proposed the applicability of S-NAP as archival contents and as a supportive tool for archival activity networks.