• Title/Summary/Keyword: DE&I

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Properties of Perovskite Materials and Devices Fabricated Using the Solvent Engineered One-Step Spin Coating Method (단일 스텝 스핀 코팅 방법에서 증발 제어 공정 변경에 따른 페로브스카이트 박막 물성 및 태양 전지 소자 특성 변화에 관한 연구)

  • Oh, Jungseock;Kwon, Namhee;Cha, DeokJoon;Yang, JungYup
    • New Physics: Sae Mulli
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    • v.68 no.11
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    • pp.1208-1214
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    • 2018
  • The one-step spin coating method is reported as an excellent thin film process because it can be easily used to fabricate high-quality methyl-ammonium lead tri-iodide ($MAPbI_3$) perovskite layers. One of the important things in the one-step spin coating method towards obtaining high-quality $MAPbI_3$ layers is the anti-solvent (AS) engineering, which consists of an one-step deposition of the $MAPbI_3$ film and dripping of the AS. The properties of the $MAPbI_3$ layer were found to be strongly influenced by the amount, dispensing speed, and spraying time of the AS solution. The $MAPbI_3$ solution was prepared by dissolving lead iodide and methyl-ammonium iodide in N,N-dimethylformamide and adding N,N-dimethyl sulfoxide. Diethyl ether (DE) was used for the AS solution. The results indicate that a $MAPbI_3$ layer appropriately sprayed with DE is beneficial for improving film quality and device efficiency because nucleation of $MAPbI_3$ layer is affected by the characteristics of DE, which affect the film's crystallinity, density, and surface morphology. The $MAPbI_3$ layer, which was optimized by using 0.7 mL of DE, a 3.03 mL/sec dispensing speed, and a 7 second time to spray after spinning showed the best efficiency of 13.74%, which was reproducible.

Data De-duplication and Recycling Technique in SSD-based Storage System for Increasing De-duplication Rate and I/O Performance (SSD 기반 스토리지 시스템에서 중복률과 입출력 성능 향상을 위한 데이터 중복제거 및 재활용 기법)

  • Kim, Ju-Kyeong;Lee, Seung-Kyu;Kim, Deok-Hwan
    • Journal of the Institute of Electronics and Information Engineers
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    • v.49 no.12
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    • pp.149-155
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    • 2012
  • SSD is a storage device of having high-performance controller and cache buffer and consists of many NAND flash memories. Because NAND flash memory does not support in-place update, valid pages are invalidated when update and erase operations are issued in file system and then invalid pages are completely deleted via garbage collection. However, garbage collection performs many erase operations of long latency and then it reduces I/O performance and increases wear leveling in SSD. In this paper, we propose a new method of de-duplicating valid data and recycling invalid data. The method de-duplicates valid data and then recycles invalid data so that it improves de-duplication ratio. Due to reducing number of writes and garbage collection, the method could increase I/O performance and decrease wear leveling in SSD. Experimental result shows that it can reduce maximum 20% number of garbage collections and 9% I/O latency than those of general case.

[ $Intersexualit{\acute{e}}$ ] Et La Mode En Occident

  • Bang Soo-Ran
    • International Journal of Costume and Fashion
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    • v.5 no.2
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    • pp.11-27
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    • 2005
  • La demarche et l'objet de cette recherche sont d'analyser, psychiquement, biologiquement, les marques de l'intersexualite presentent en Occident et les elements intersexuels, binaires dans le vetement, et egalement de comprendre l'ambiguite ou encore la fusion des identites sexuees. qui presente symboliquement a travers le vetement, dans la societe moderne. Malgre tous les points communs et differents, la base fondamentale dans les theories de I'Occident est que tout individu est psychiquement, biologiquement en quelque sorte un intersexuel qui s'ignore, avec des variations selon l'individu. En definitive, les compositions doubles des elements dans le vetement occidental montraient emblematiquement nos qualites doubles, masculins et feminins, et les trois elements semblent primordiaux pour l'elucidation de la predisposition du porteur : la couleur du tissu, sa texture et la forme du vetement. La mode d'aujourd'hui bascule entre masculin et feminin. Cette fusion de la mode semble le reflet d'une tendance intersexuelle et d'une fusion du genre.

A de-noising method based on connectivity strength between two adjacent pixels

  • Ye, Chul-Soo
    • Korean Journal of Remote Sensing
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    • v.31 no.1
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    • pp.21-28
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    • 2015
  • The essential idea of de-noising is referring to neighboring pixels of a center pixel to be updated. Conventional adaptive de-noising filters use local statistics, i.e., mean and variance, of neighboring pixels including the center pixel. The drawback of adaptive de-noising filters is that their performance becomes low when edges are contained in neighboring pixels, while anisotropic diffusion de-noising filters remove adaptively noises and preserve edges considering intensity difference between neighboring pixel and the center pixel. The anisotropic diffusion de-noising filters, however, use only intensity difference between neighboring pixels and the center pixel, i.e., local statistics of neighboring pixels and the center pixel are not considered. We propose a new connectivity function of two adjacent pixels using statistics of neighboring pixels and apply connectivity function to diffusion coefficient. Experimental results using an aerial image corrupted by uniform and Gaussian noises showed that the proposed algorithm removed more efficiently noises than conventional diffusion filter and median filter.

A GENERALIZATION OF MULTIPLICATION MODULES

  • Perez, Jaime Castro;Montes, Jose Rios;Sanchez, Gustavo Tapia
    • Bulletin of the Korean Mathematical Society
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    • v.56 no.1
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    • pp.83-102
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    • 2019
  • For $M{\in}R-Mod$, $N{\subseteq}M$ and $L{\in}{\sigma}[M]$ we consider the product $N_ML={\sum}_{f{\in}Hom_R(M,L)}\;f(N)$. A module $N{\in}{\sigma}[M]$ is called an M-multiplication module if for every submodule L of N, there exists a submodule I of M such that $L=I_MN$. We extend some important results given for multiplication modules to M-multiplication modules. As applications we obtain some new results when M is a semiprime Goldie module. In particular we prove that M is a semiprime Goldie module with an essential socle and $N{\in}{\sigma}[M]$ is an M-multiplication module, then N is cyclic, distributive and semisimple module. To prove these results we have had to develop new methods.

L'etude du Costume Liturgique (그리스도교의 전례복에 관한 연구)

  • 오춘자
    • Journal of the Korean Home Economics Association
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    • v.12 no.34
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    • pp.743-769
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    • 1974
  • Au debut I'habit Iiturgique ne differait de I'habit de fete du simple citoyen que par sa richesse. C'est seulement quand, dans la vie courante, on adopta la robe courte que le vetememt liturgique commenca a se distinguer, meme par la forme, du costume civil. Les ornements liturgiques, en effet, ne sont qu'une forme stylisee de l'habit de fete de la fin de l'Empire Romain (du IIIeme au Veme siecle). Pour une ceremonie religieuse on se presente bien habille. Le meme sentiment de respect des choses sacrees a amene deja, vers la fin de l'antiquite chretienne, a donner au pretre un vetememt liturgique special. Pour celebrer la messe, le pretre revet par-dessus sa soutane un costume special, compose de l'amict, de l'aube, du cordon, du manipule, de l'etole et de la chasuble. Aux messes solennelles, les eveques ajoutent a ces ornements des bas et sandales, des gants, la tunique et la dalmatique avee la mitre ; en certain cas, les archeveques y joingnent le pallium. Aux messes solennelles, le diacre porte sur ; l'aube le manipule et la tunique. De ces pieces du costume liturgique, on dira brievement, apres leur emploi et leur forme actel, l'origine et l'histoire, mais seulement apres avoir marque les lignes generales parition et des transformations du costume liturgique dans son ensemble. L'evolution du costume liturgique a partir du XIIIeme siecle peut se resumer en quelques mots en raison souvent de la lourdeur des riches etoffes (velours et brocarts) et de l'importance donne a la decoration, toujours par rechereche d'une plus grande commodite on a abandonne lentement d'abord, puis rapidement adapte a partir du XVI eme siecle, les formes amples pour des formes courtes et etriquees. Il faut faire quelques exceptions qui marquent l'influence des gouts decoratifs de gouts epoque : La periode de 1700 a 1850 marque la complete decadence du costum liturgique. On a depuis essaye de lui rendre sa beaute et aussi sa signification symbolique, par un retour aux etoffes et a la decoration de la deuxieme partie du moyen age. Souhations que, sous la direction des liturgistes, en respectant l'essentiel de la liturgie aujourd'hui, avec le concours d'artistes epris du sens liturgique et des connaisseurs des tradtions et de toutes les ressources actuelles on trouve des costumes liturgiques adaptes a notre temps dans un style plus simple et correspondant au besoins actuels.

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Simulation of Electric Vehicles Combining Structural and Functional Approaches

  • Silva, L.I.;Magallan, G.A.;De La Barrera, P.M.;De Angelo, C.H.;Garcia, G.O.
    • Journal of Electrical Engineering and Technology
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    • v.9 no.3
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    • pp.848-858
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    • 2014
  • In this paper the construction of a model that represents the behavior of an Electric Vehicle is described. Both the mechanical and the electric traction systems are represented using Multi-Bond Graph structural approach suited to model large scale physical systems. Then the model of the controllers, represented with a functional approach, is included giving rise to an integrated model which exploits the advantages of both approaches. Simulation and experimental results are aimed to illustrate the electromechanical interaction and to validate the proposal.

Oral Concentrated Grape Juice Suppresses Expression of NF-kappa B, TNF-α and iNOS in Experimentally Induced Colorectal Carcinogenesis in Wistar Rats

  • de Lima Pazine Campanholo, Vanessa Maria;Silva, Roseane Mendes;Silva, Tiago Donizetti;Neto, Ricardo Artigiani;Paiotti, Ana Paula Ribeiro;Ribeiro, Daniel Araki;Forones, Nora Manoukian
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.3
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    • pp.947-952
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    • 2015
  • The aim of this study was to evaluate the effects of grape juice on colon carcinogenesis induced by azoxymethane (AOM) and expression of NF-kB, iNOS and TNF-${\alpha}$. Methods: Forty male Wistar rats were divided into 7 groups: G1, control; G2, 15 mg/kg AOM; G3, 1% grape juice 2 weeks before AOM; G4, 2% grape juice 2 weeks before AOM; G5, 1% grape juice 4 weeks after AOM; G6, 2% grape juice 4 weeks after AOM; G7, 2% grape juice without AOM. Histological changes and aberrant crypt foci (ACF) were studied, while RNA expression of NF-kB, TNF- and iNOS was evaluated by qPCR. Results: The number of ACF was higher in G2, and G4 presented a smaller number of crypts per focus than G5 (p=0.009) and G6. Small ACF (1-3) were more frequent in G4 compared to G2, G5 and G6 (p=0.009, p=0.009 and p=0.041, respectively). RNA expression of NF-kB was lower in G3 and G4 compared to G2 (p=0.004 and p=0.002, respectively). A positive correlation was observed between TNF-${\alpha}$ and NF-kB gene expression (p=0.002). In conclusion, the administration of 2% grape juice before AOM reduced the crypt multiplicity, attenuating carcinogenesis. Lower expression of NF-kB was observed in animals exposed to grape juice for a longer period of time, regardless of concentration.

Fractionnement des prodiuts de $r{\acute{e}}action$ de Maillard par $diff{\acute{e}}rentes$ techniques et observation $d'activit{\acute{e}}$ fermentaire de ces fractions -I. Fractionnement sur ${\acute{e}}changeur$ de cation- (여러가지 방법(方法)에 의(依)한 Premelanoidin의 분획(分劃)과 그 분획물(分劃物)의 발효활성(醱酵活性)에 관(關)한 관찰(觀察) -I. 양(陽)이온 교환수지(交換樹脂)에 의(依)한 분획(分劃)-)

  • Lee, Yang-Hee;Petit, Leon;Fittes, Eliane
    • Applied Biological Chemistry
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    • v.11
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    • pp.95-100
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    • 1969
  • 마이야르반응(反應) 생성물(生成物)인 Premelanoidin 중(中) 주정발효(酒精醱酵)의 속도(速度)를 촉진(促進)하는 물질(物質)을 분리(分離)하기 위(爲)하여 양(陽)이온 교환수지를 이용(利用)하여 Premelanoidin을 fractionation하고 얻어진 각(各) fraction의 주정발효(酒精醱酵)의 활성(活性)여부를 시험(試驗)하였다. 양(湯)이온 교환수지로는 Dowex $50{\times}8$, 50-100을 사용(使用)하고 elution solvent로는 $2N-NH_4OH$ 용액(溶液)을 사용(使用)하였으며 얻어진 각(各) 5ml의 fraction은 냉동건조(冷凍乾操)해서 다시 본래(本來) 시료(試料)의 농도(濃度)(0.2N)로 희석하여 활성시험(活性試驗)에 사용(使用)하였다. Fractionation의 결과(結果)는 water filtrate 구(區)에 glucose, 5-HMF 및 소량(少量)의 갈색색소의 fraction을 얻었고 ammoniacal eluate 구(區)에 대부분(大部分)의 갈색색소와 glycine N-glycoside의 fraction을 얻을 수 있었다. 주정발효(酒精醱酵)의 활성(活性)은 glucose, 갈색색소 및 glycine-N-glycoside 구획에서 관찰할 수 있었으나 glucose 는 전(前) 실험(實驗)에서 활성(活性)이 없는 물질(物質)로 인정(認定)되었으며 본(本) 실험(實驗)에 나타난 활성(活性)은 Dowex 50에 의(依)한 fractionation 과정중 glucose 자체(自體)의 변질(變質)에 의(依)한 것으로 추측된다. 결국(結局) 활성물질(活性物質)이 존재(存在)하는 fraction은 Ammoniacal eluate 구(區)의 갈색색소 fraction과 glycine 및 N-glycoside를 함유하는 fraction이라고 인정(認定)된다.

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Factors associated with outcomes following microvascular decompression for the treatment of primary trigeminal neuralgia in adults: a systematic review and meta-analysis

  • Pablo Gomes-da Silva de Rosenzweig;Santiago Pastrana-Brandes;Salomon Merikansky-Gerson;Luis Octavio Victoria-Garcia;Magdalena Sophia Curtius-Caruso;Jose Damian Carrillo-Ruiz
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.24 no.4
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    • pp.227-243
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    • 2024
  • This study aimed to evaluate pain assessment strategies and factors associated with outcomes after microvascular decompression for the treatment of primary trigeminal neuralgia in adults. We conducted a systematic review and meta-analysis of English, Spanish, and French literature. We searched three databases, PubMed, Ovid, and EBSCO, from 2010 to 2022 and selected studies including patients with primary trigeminal neuralgia, clear pain assessment, and pain outcomes. Population means and standard deviations were calculated. Studies that included factors associated with postoperative outcomes were included in the meta-analysis. A total of 995 studies involving 5673 patients with primary trigeminal neuralgia following microvascular decompression were included. Patients with arteries compressing the trigeminal nerve demonstrated optimal outcomes following microvascular decompression (odds ratio [OR]= 0.39; 95% confidence interval [CI] = 0.19-0.80; X2 = 46.31; Dof = 15; I2 = 68%; P = < 0.0001). Conversely, when comparing arterial vs venous compression of the trigeminal nerve (OR = 2.72; 95% CI = 1.16-6.38; X2 = 23.23; Dof = 10; I2 = 57%; P = 0.01), venous compression demonstrated poor outcomes after microvascular decompression. Additionally, when comparing single-vessel vs multiple-vessel compression (OR = 2.72; 95% CI = 1.18-6.25; X2 = 21.17; Dof = 9; I2 = 57%; P = 0.01), patients demonstrated unfavorable outcomes after microvascular decompression. This systematic review and meta-analysis evaluated factors associated with outcomes following microvascular decompression (MVD) for primary trigeminal neuralgia (PTN). Although MVD is an optimal treatment strategy for PTN, a gap exists in interpreting the results when considering the lack of evidence for most pain assessment strategies.