• 제목/요약/키워드: po

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PoRAM의 특성을 고려한 행 디코더 설계 및 시뮬레이션 (A Row Decoder Design and Simulation Considering The Characteristics of PoRAM)

  • 박유진;김정하;조자영;이상선
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2006년도 하계종합학술대회
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    • pp.659-660
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    • 2006
  • The low crosstalk row-decoder is studied for PoRAM applications. Because polymer-based memories can be more densely integrated than established silicon-based ones, PoRAM is highly sensitive for the crosstalk problem. To overcome the problem and to suggest the suitable decoder for PoRAM, this paper shows the comparison of the row-path characteristics for both the 2-stage dynamic logic decoder and the 2-stage static logic decoder. Moreover, to suppress the Glitch effect which is observed by using the static logic decoder, the Master-Slave(M/S) D-Flip/Flop(D-F/F) is applied as a deglitch. Finally, the improved output result of the 2-stage static logic decoder with the M/S D-F/F is shown..

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문수사 유물 소와 직물류에 관한 연구 (Studies on the relic Po and Fabrics of the Moon Su Temple)

  • 송명숙
    • 대한가정학회지
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    • 제24권1호
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    • pp.9-15
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    • 1986
  • It is studied that the typical garments of Korea Dynasty, especially focused on half-sleeved Saeng jo Po and conspicuous kinds of fabrics,. Characteristics of this Po are doubled collar, pleats, half-sleeved, a partial lining sewed in the back of an unlined coat, a breast-tie, and so on. It is that a girdle of Po had been used from the early Korea Dynasty, contrary to the general theory that a girdle of Po was the special characteristic of early Korea Dynasty in the garments history of Korea. It is that the species, it is that there are may characteristic way of patterns in the Korea Dynasty, such as turtle patterns, cloud patterns, swastika patterns. etc.

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Effects of metal ions substitution for a potential blue-emitting $RbBaPO_4:Eu^{2+}$ phosphor

  • Kang, Dong-Seok;Yoo, Hyoung-Sun;Jeon, Duk-Young
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.1279-1282
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    • 2009
  • The luminescence properties of a potential blue-emitting $RbBaPO_4:Eu^{2+}$ phosphor substituted with various metal ions have been investigated. The main emission wavelength of the phosphor samples was red-shifted by the substitution with K and Sr ions. The maximum peak intensity was obtained from the sample $Rb_{0.25}K_{0.75}Ba_{0.99}Eu_{0.01}PO_4$ which showed 144% relative intensity versus that of BAM:$Eu^{2+}$ phosphor under 254 nm excitation.

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멀티캐스트 전송을 이용한 Seamless N-스크린 서비스 개발 (Development of Seamless N-Screen Services through Multicast Transmission scheme)

  • 허경;최상길;이혜진;전혜지;김진우;이성로
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2015년도 춘계학술발표대회
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    • pp.234-235
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    • 2015
  • P2P 스트리밍 가능한 OSMU(One Source Multi Use) N-스크린 서비스를 제공하기 위해서는 Seamless 무선 통신이 반드시 요구된다. 본 논문에서는 Seamless N-스크린 서비스를 위한 무선 통신 MAC 구조로서, WiMedia Distributed-MAC 프로토콜을 적용하고, OSMU N-스크린 서비스를 제공하기 위해, 멀티캐스트 전송 기술을 제안하고 성능을 분석하였다.

Electrical Conductivity of the System ThO$_2-Ho_2O_3$

  • 조승구;박성호;김규홍;최재시
    • Bulletin of the Korean Chemical Society
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    • 제9권1호
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    • pp.21-24
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    • 1988
  • The electrical conductivitv of the system $ThO_2-Ho_2O_3$ was measured in the temperature range 600-$1100^{\circ}C$ and $Po_2$range $10^{-5}-2{\times}10^{-1}$ atm. The mean value of activation energy was 1.45 eV. The observed conductivity dependence on $Po_2$ was ${Po_2}^{1/4}$ at $Po_2$'s above $10^{-3}$ atm and was independent on oxygen partial pressure at $Po_2$'s below $10^{-3}$ atm. It is suggested that these dependences are due to a mixed ionic plus electron hole conduction by Vo defect.

Preliminary Study on the Regeneration of Spent Electro-decontamination Solution Using Phosphoric Acid and Oxalic Acid

  • Naznin, Marufa;Septian, Ardie;Shin, Won Sik
    • 한국방사성폐기물학회:학술대회논문집
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    • 한국방사성폐기물학회 2015년도 추계학술논문요약집
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    • pp.465-466
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    • 2015
  • In this study, different amount of (fe(0)) were dissolve into different strength of phosphoric ($H_3PO_4$) acid and the optimum solubility was observed at 0.89M Fe(0) into 4M of $H_3PO_4$ acid. Different concentration of oxalic acid was added to determine the optimum precipitated condition. The dissolution kinetics of Fe(0) into $H_3PO_4$ acid was investigated at $40-50^{\circ}C$. The optimum Fe-oxalate precipitate was dried and thermal decomposition using DSC-TG was conducted. Approximately 52 wt(%) of oxalic acid was removed at $300^{\circ}C$. Iron oxides such as magnetite and hematite that may be formed on the surface of nuclear waste were also dissolved into the $H_3PO_4$ acid and the optimum solubility for magnetite is 0.005M while that for hematite is 0.02M in 8M $H_3PO_4$ acid, respectively.

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The Mother Goddess of Champa: Po Inâ Nâgar

  • Noseworthy, William B
    • 수완나부미
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    • 제7권1호
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    • pp.107-137
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    • 2015
  • This article utilizes interdisciplinary methods in order to critically review the existing research on the Mother Goddess of Champa: Po Inâ Nâgar. In the past, Po Inâ Nâgar has too often been portrayed as simply a "local adaptation of Uma, the wife of Śiva, who was abandoned by the Cham adapted by the Vietnamese in conjunction with their conquest of Champa." This reading of the Po Ina Nagar narrative can be derived from even the best scholarly works on the subject of the goddess, as well as a grand majority of the works produced during the period of French colonial scholarship. In this article, I argue that the adaption of the literary studies strategies of "close reading", "surface reading as materiality", and the "hermeneutics of suspicion", applied to Cham manuscripts and epigraphic evidence-in addition to mixed anthropological and historical methods-demonstrates that Po Inâ Nâgar is, rather, a Champa (or 'Cham') mother goddess, who has become known by many names, even as the Cham continue to re-assert that she is an indigenous Cham goddess in the context of a majority culture of Thành Mẫu worship.

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Smart and Secure Point of Sale Framework with Threat Modeling and Formal Verification

  • Mona faraj Nasser alwahabi;Shaik Shakeel Ahamad
    • International Journal of Computer Science & Network Security
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    • 제24권6호
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    • pp.41-48
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    • 2024
  • Existing PoS (Point of Sale) based payment frameworks are vulnerable as the Payment Application's integrity in the smart phone and PoS are compromised, vulnerable to reverse engineering attacks. In addition to these existing PoS (Point of Sale) based payment frameworks do not perform point-to-point encryption and do not ensure communication security. We propose a Smart and Secure PoS (SSPoS) Framework which overcomes these attacks. Our proposed SSPoS framework ensures point-to-point encryption (P2PE), Application hardening and Application wrapping. SSPoS framework overcomes repackaging attacks. SSPoS framework has very less communication and computation cost. SSPoS framework also addresses Heartbleed vulnerability. SSPoS protocol is successfully verified using Burrows-Abadi-Needham (BAN) logic, so it ensures all the security properties. SSPoS is threat modeled and implemented successfully.

Modeling the electric transport of HCl and H3PO4 mixture through anion-exchange membranes

  • Koter, Stanislaw;Kultys, Monika;Gilewicz-Lukasik, Barbara
    • Membrane and Water Treatment
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    • 제2권3호
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    • pp.187-205
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    • 2011
  • The electric transport of the mixture of hydrochloric and phosphoric acids through strong base (Neosepta ACM) and weak base (Selemion AAV) anion-exchange membranes was investigated. The instantaneous efficiency of HCl removal from the cathode solution, $CE_{Cl}$, with and without $H_3PO_4$ was determined. It was found that $CE_{Cl}$ was 0.8-0.9 if the number of moles of elementary charge passed through the system, $n_F$, did not exceed ca. 80% of the initial number of HCl moles in the cathode solution, $n_{Cl,ca,0}$. The retention efficiency of $H_3PO_4$ in that range was close to one. The transport of acid mixtures was satisfactorily described by a model based on the extended Nernst-Planck and Donnan equations for $n_F$ not exceeding $n_{Cl,ca,0}$. Among the tested model parameters, most important were: concentration of fixed charges, the porosity-tortuosity coefficient, and the partition coefficient of an undissociated form of $H_3PO_4$. For the both membranes, the obtained optimal values of fixed charge concentration, $\bar{c}_m$, were up to 40% lower than the literature values of $\bar{c}_m$ obtained from the equilibrium measurements. Regarding the $H_3PO_4$ equilibria, it was sufficient to consider $H_3PO_4$ as a monoprotic acid.

카본소스로서 유기산을 이용한 $LiFePO_4$의 고상 합성법 (Synthesis of $LiFePO_4$ by solid-state reaction using organic acids as carbon sources)

  • Kam, Dae-Woong;Kim, Ke-Tack;Kim, Hyun-Soo;Son, Young-Guk
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2009년도 추계학술대회 논문집
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    • pp.279-279
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    • 2009
  • $LiFePO_4$는 낮은 전기전도도로 인하여 전이금속의 도핑과 카본코팅으로 전기화학적 특성을 향상시키려는 연구가 많이 되어 왔다. 또한 다양한 합성법으로 $LiFePO_4$의 입자사이즈를 최적화 하기 위해 많은 연구가 진행중이다. 특히 고상 합성법은 결정의 미세화가 가능하고, 상온에서 쉽고 용이하게 원소간의 합금화 및 화학반응을 유도하는 등의 장점으로 인해 가장 널리 사용하고 있는 합성법중 하나이다. 이번 연구에서도 고상합성법을 사용하여 $LiFePO_4$를 합성했으며, 카본소스로서 카르복시산등의 유기산을 사용하여 코팅을 시도해 보았다. 이렇게 합성된 $LiFePO_4$의 물리적 측정을 통하여 입사의 형상 및 크기를 관찰하였고, 하프셀을 구성하여 전기화학적 특성을 확인하였다.

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