• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.185-192
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• 2007

음성 사용자 인터페이스(Voice User Interface, 이하 VUI) 는 음성을 매개로 일어나는 인간과 기계 간 인터페이스를 뜻한다. 음성 인식율의 향상과 음성 재생 장치의 발달에 힘입어 최근 들어 휴대폰과 카 네비게이션 시스템에 주로 적용되고 있다. 최근 이러한 경향은 A/V 시스템 등 가전제품(Domestic Appliance) 에도 확대되고 있는데 본 연구에서는 사용자와 필수적이고 빈번한 상호작용이 일어나는 백색 가전을 대상으로 사용자를 만족시키는 음성 인터페이스의 주요 속성 중 음성 생성(Speech Generation)과 관련된 음성 표현을 중점 연구하였다. 연구방법으로 먼저 주부들이 느끼는 가전에서의 문제점과 VUI 로서 해결가능성에 대하여 F.G.I. 를 통하여 조사하여 주요 이슈를 도출하고, 대표적 백색 가전인 에어컨, 세탁기, 김치냉장고, 냉장고, 식기세척기, 오븐레인지 등 6개 제품에 대하여 음성의 물리적 특성, 내용적 특성, 기능에 따른 배치에 대하여 조건에 따라 다양한 프로토타입을 제작한 후 실제 환경과 유사한 실험실 상황에서 사용자의 선호도, 적합도 및 수행을 측정하였다. 연구 결과 각 이슈에 따라 가전제품에 적합한 VUI 가이드라인 특성을 찾아내었다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.07b
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• pp.1003-1006
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• 2003

We have investigated the effect of hole-injection buffer layer and cathodes in organic light-emitting diodes u sing poly (3,4-ethylenedioxythiophene) : poly (stylenesulfonate) (PEDOT: PSS) in a device structure of $ITO/PEDOT:PSS/TPD/Alq_3/Cathode$. Polymer PEDOT:PSS buffer layer was made using spin casting method. Current-voltage, luminance-voltage characteristics and efficiency of device were measured at room temperature with a variation of cathode materials. The device with LiF/Al cathode shows an improvement of external quantum efficiency approximately by a factor of ten compared to that of Al cathode only device. Our observation shows that the energy barrier-height in cathode side is important in improving the efficiency of the organic light-emitting diodes.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.11a
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• pp.112-115
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• 2004

Photovoltaic effects in $CuPc/C_{60}$ heterojunction structure have been studied depending on thickness of exciton blocking layer(BCP) and electrodes. Bare ITO and polymer coated electrode(PEDOT:PSS) were used as an anode, and Al, Ca/Al, Mg/Al, LiF/Al, and LiAl were used as a cathode. Photovoltaic parameters depending on BCP layer thickness from 0 to 60 nm and electrodes having different work function were measured using Keithley 236 source-measure unit and a 500W xenon lamp (ORIEL 66021). We have seen that the BCP layer thickness severely affects on the performance of photovoltaic cells.

• Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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• v.1
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• pp.349-374
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• 1999

In der vorliegenden Arbeit wird versucht, die Verhaltnisse yon Informationsstrukturierung (information packaging) und Scrambling am Material des Deutschen zu untersuchen. Bei der Informationsstrukturierung geht es um die Ordnung der Elemente des Satzes, die durch die Kommunikationssituation, die Intentionen des Sprechers sowie seine Kenntnisse und Annahmen tiber $Wissensvorr\"{a}te\;des\;H\"{o}rers$ determiniert wird. Deutsch ist eine Sprache mit 'freier' Abfolge der Satzglieder. Die Grammatik des Deutschen erlaubt $S\"{a}tze$, die dasselbe bedeuten und sich in ihrer Konstituentenfolge unterscheiden. Diese variable Wortfolge (Topikalisierung und Scrambling) und der Satzakzent im Deutschen wirken systematisch mit der Informationsstruktur (Topik­Pradikation-Struktur und Fokus-Hintergrund-Struktur) zusammen. Es ist allgemein bekannt, $da\ss$ Scrambling und Topikalisierung sowohl diskurssemantische als auch informationsstrukturelle Effekte $ausl\"{o}sen$. In der vorliegenden Arbeit wird zuerst auf problematische Aspekte der $Ans\"{a}tze$ hingewiesen, die Scrambling mit (diskurs-)semantischen Begriffen wie 'Definitheit', $'Spezifit\"{a}t'\;oder\;'Familiarit\"{a}t'$ sowie mit der traditionellen 'Thema-Rhema-Gliederung' zu erklaren versuchen. Dann wird Scrambling unter Bezug auf den Zusammenhang zwischen Fokus-Hintergrund-Struktur und grammatischer Struktur behandelt. Dabei wird festgestellt, dass Satzakzent und Scrambling systematisch mit der Fokus-Hintergrund-Gliederung des Informationsbereiches im Satz interagieren und dass die $Umstellungsm\"{o}glichkeiten$ im Mittelfeld zur $\"{A}nderung$ der Fokusprojektion, d.h. zur Umordnung von Hintergrund-Teil und Fokus-Teil $f\"{u}hren$. Scrambling kann dazu im Zusammenwirken mit dem Satzakzent und einem bestimmten Intonationsmuster einen 'Kontrasttopik' - Effekt $ausl\"{o}sen$.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1993.05a
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• pp.85-87
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• 1993

We have investigated three polyene systems, $X-(-HC=CH-)_n-Y$, where X/Y=H/H, $F/CH_3$, and $NH_2/NO_2$. We estimated asymptotic values (for $n=\infty$ of the electronic properties with $logA=a_o+a_1/(n+1)+a_2/(n+1)^2+a_3/(n+1)^3$, so that the cases n=0 can be included in that equation. Here, A can be $\mu$, $\beta$, $\alpha/(n+1)$ or $\gamma/(n+1)$. For these asymptotic values. the SCF results are more reliable due to the higher level of theory, while the PM3 results can give better trend with more data for polyene systems with longer chain length.

• International Journal of Concrete Structures and Materials
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• v.10 no.3
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• pp.383-391
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• 2016

This paper reports the results of an experimental program involving several small-scale columns which were constructed to simulate corrosion damage in the field using two accelerated corrosion techniques namely, constant voltage and constant current. A total of six columns were cast for this experiment. For one pair of regular RC columns, corrosion was accelerated using constant voltage and for another pair, corrosion was accelerated using constant current. The remaining pair of regular RC columns was used as control. In the experiment, all the columns were subjected to cyclic wetting and drying using sodium chloride (NaCl) solution. The currents were monitored on an hourly interval and cracks were visually checked throughout the test program. After the specimens had suffered sufficient percentage steel loss, all the columns including the control were tested to failure in compression. The test results generated show that accelerated corrosion using impressed constant current produces more corrosion damage than that using constant voltage. The results suggest that the constant current approach can be better used to simulate corrosion damage of reinforced concrete structures and to assess the effectiveness of various materials, repair strategies and admixtures to resist corrosion damage.

• Journal of applied mathematics & informatics
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• v.15 no.1_2
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• pp.503-510
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• 2004

Given vectors x and y in a Hilbert space, an interpolating operator is a bounded operator T such that Tx = y. An interpolating operator for n vectors satisfies the equation $Tx_i\;=\;y_i,\;for\;i\;=\;1,\;2,\;\cdots,\;n$. In this paper the following is proved: Let H be a Hilbert space and L be a commutative subspace lattice on H. Let H and y be vectors in H. Let $M_x\;=\;\{{\sum{n}{i=1}}\;{\alpha}_iE_ix\;:\;n\;{\in}\;N,\;{\alpha}_i\;{\in}\;{\mathbb{C}}\;and\;E_i\;{\in}\;L\}\;and\;M_y\;=\;\{{\sum{n}{i=1}}\;{\alpha}_iE_iy\;:\;n\;{\in}\;N,\;{\alpha}_i\;{\in}\;{\mathbb{C}}\;and\;E_i\;{\in}\;L\}. Then the following are equivalent. (1) There exists an operator A in AlgL such that Ax = y, Af = 0 for all f in ${\overline{M_x}}^{\bot}$, AE = EA for all $E\;{\in}\;L\;and\;A^{*}\;=\;A$. (2) $sup\;\{\frac{{\parallel}{{\Sigma}_{i=1}}^{n}\;{\alpha}_iE_iy{\parallel}}{{\parallel}{{\Sigma}_{i=1}}^{n}\;{\alpha}_iE_iy{\parallel}}\;:\;n\;{\in}\;N,\;{\alpha}_i\;{\in}\;{\mathbb{C}}\;and\;E_i\;{\in}\;L\}\;<\;{\infty},\;{\overline{M_u}}\;{\subset}{\overline{M_x}}$ and < Ex, y >=< Ey, x > for all E in L.

• Transactions of the Korean Society of Mechanical Engineers
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• v.16 no.4
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• pp.775-786
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• 1992

Studies are made of the turbulent separation bubble in a two-dimensional semi-infinite blunt plate aligned to a uniform free stream when the oncoming free stream contains a pulsating component. The discrete-vortex method is applied to simulate this flow situations because this approach is effective to represent the unsteady motions of turbulent shear layer and the effect of viscosity near the solid surface. The two key external paramenters in the free stream, i.e., the amplitude of pulsation, A, and the frequency parameter St[=fH/ $U_{1}$], are dealt with in the present numerical computations, A particular frequency gives a minimum reattachment which is related to the drag reduction and the most effective frequency is dependent on the most amplified shedding frequency. The turbulent flow structure is scrutinized. A comparison between the unperturbed flow and the perturbed at the particular frequency of the minimum reattachment length of the separation bubble suggests that the large-scale structure is associated with the shedding frequency and the flow instabilities.

• Natural Product Sciences
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• v.6 no.3
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• pp.147-150
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• 2000

The extracts of Carica papaya (flower), Barringtonia macrostachya (leaves), Coleus tuberosus (tuber), Mangifera indica (fruit skin) and Eugenia polyantha (leaves) showed strong in vitro anti-tumor promoting activity when assayed using Raji cells (Mooi et al., 1999). The antitumor promoting activity of the crude extracts was further analyzed by immunoblotting analysis of Raji cells carving Epstein-Barr virus genome. The expression of early antigens diffuse (EA-D) and early antigens restricted (EA-R) was determined by performing western blotting of treated Raji cells with human sera of nasopharyngeal carcinoma patients. All the plant extracts were shown to be able to suppress both EA-D and EA-R.

• Asian-Australasian Journal of Animal Sciences
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• v.12 no.7
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• pp.1063-1069
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• 1999

Wheat straw samples (3-4 cm) were sprayed with solutions of urea (U) alone or with a dry addition of garden soil (GS), midden soil (MS), soya bean meal (SM) or jack bean meal (JM) as crude urease sources and with a pure urease (UR) enzyme. Each of the urease sources was included at two levels: 30 and 60 g/kg except pure urease, which was added at a level of 2.5 & 5.0 g/kg treated straw dry matter. Untreated straw without urease source was used as a control. After treatment, samples were sealed in polythene bags and stored for 2, 7, 14, 21 and 35 days at $19{^{\circ}C}$. The urease sources, their levels and treatment time produced significant effects on ammonia production (p<0.01). The addition of urease offered more flexibility in hydrolyzing urea in the shortest possible time. Incorporation of soya bean and jack bean meal was effective in reducing the modified acid detergent fiber (MADF) content of straw and the same time increasing organic matter (OM) digestibility. Overall effect, addition of soya bean to urea at a ratio of 1:1 appeared to be the most satisfactory urease source for the treatment of urea and wheat straw.