768 research outputs found
Prussian blue-embedded carboxymethyl cellulose nanofibril membranes for removing radioactive cesium from aqueous solution
No full textIn this study, we synthesized a Prussian blue (PB)-embedded macroporous carboxymethyl cellulose nanofibril (CMCNF) membrane for facile cesium (Cs) removal. The PB was formed in situ at Fe3+ sites on a CMCNF framework cross-linked using FeCl3 as a cross-linking agent. Cubic PB particles of size 5–20 nm were observed on the macroporous CMCNF membrane surface. The PB-CMCNF membrane showed 2.5-fold greater Cs adsorption capacity (130 mg/gPB-CMCNF) than commercial PB nanoparticles, even though the PB loading of the PB-CMCNF membrane was less than 100 mg/gPB-CMCNF. The macroporous structure of the CMCNF membrane led to improved diffusion in the solution, thereby increasing the Cs adsorption capacity. The Cs adsorption behavior was systematically investigated in different solution chemistry. Finally, 137Cs removal using a semicontinuous adsorption module was demonstrated in real seawater. The results showed that the PB-CMCNF membrane is a highly effective, practical material for the removal of 137Cs from aqueous environments. © 2020 Elsevier Ltd1
Eun-Ja Kang, francophone woman writer born in South Korea
No full textThis thesis deals with the life and work of a contemporary Korean writer Eun-Ja Kang, who is writing her works in French. Up to now, Eun-Ja Kang is an author of two novels and her autobiography. The writing in the French language puts her among francophone authors in the broad sense of the word. However, this thesis aims at determining her position in the field of literature written in French from the perspective of two recent literary concepts: littérature-monde and transidentité. Furthermore, this work deals with thematic and stylistic analysis of her two novels and autobiography. Finding out common as well as different elements in her works, the analysis reveals the author's poetics
PENGGUNAAN PARTIKEL “-은/-는 (-EUN/-NEUN)” PADA HASIL KARANGAN NARASI MAHASISWA PROGRAM STUDI PENDIDIKAN BAHASA KOREA FPBS UPI ANGKATAN 2018
No full textPenelitian ini dilatar belakangi oleh luasnya fungsi dari partikel “은/는 [-eun/-neun]”. Partikel “은/는 [-eun/-neun]” yang pada dasarnya berfungsi untuk menentukan topik dan kontras di dalam kalimat, nyatanya dari fungsi topik tersebut dibagi lagi ke dalam lima buah fungsi yang berbeda dan fungsi-fungsi tersebut dapat dianalisis dengan mudah melalui tulisan. Mahasiswa Program Studi Pendidikan Bahasa Korea UPI angkatan 2018 sudah terbiasa menulis karangan, khususnya karangan narasi. Hal inilah yang mendorong penulis untuk melakukan penelitian terhadap penggunaan partikel “은/는 [-eun/-neun]” yang terdapat di dalam karangan narasi. Sampel dari penelitian ini adalah mahasiswa Program Studi Pendidikan Bahasa Korea angkatan 2018 sebanyak 16 orang dan metode penelitian yang digunakan dalam penelitian ini adalah metode deskriptif kualitatif yang bertujuan untuk mencari fungsi yang dominan digunakan dari partikel “은/는 [-eun/-neun]” pada karangan narasi mahasiswa Program Studi Pendidikan Bahasa Korea UPI angkatan 2018. Instrumen yang digunakan dalam penelitian ini adalah soal tes menulis bahasa Korea dan wawancara. Hasil analisis data penelitian ini menunjukkan bahwa: 1) Fungsi partikel “은/는 [-eun/-neun]” yang ditemukan dalam karangan narasi mahasiswa Program Studi Pendidikan Bahasa Korea adalah fungsi topik, dengan urutan yang paling dominan yaitu: Informasi Lama (IL) sebanyak 92 buah (68,65%.); fungsi Topik Baru (TB) sebanyak 27 buah (20,14%); fungsi Fakta (F) sebanyak 10 buah (7, 46%); Fungsi Pengganti Topik (PT) sebanyak 0 (0%). Kemudian, untuk fungsi Kontras (K) ditemukan sebanyak 5 buah (3,73%). Hasil wawancara dengan para sampel menunjukkan bahwa fungsi yang sering digunakan dalam membuat karangan narasi adalah fungsi untuk topik. Oleh karena itu, dapat disimpulkan bahwa fungsi partikel “은/는 [-eun/-neun]” yang banyak digunakan dalam membuat karangan narasi adalah fungsi topik, sejalan dengan hasil yang ditemukan di dalam penelitian ini bahwa penggunaan partikel “은/는 [-eun/-neun]” yang paling banyak ditemukan dalam karangan narasi mahasiswa Program Studi Pendidikan Bahasa Korea angkatan 2018 adalah fungsi topik, dengan lebih spesifiknya yaitu fungsi topik untuk menunjukkan Informasi Lama (IL) dan diharapkan dalam penelitian selanjutnya dapat dilakukan penelitian mengenai penggunaan partikel “은/는 [-eun/-neun]” pada jenis karangan lain selain narasi.
.
Kata kunci: Informasi Lama (IL), karangan narasi, penggunaan partikel “은/는 [-eun/-neun]”.
||
This research is motivated by the wide function of the particle "은/는 [-eun / -neun]". The particle "은/는 [-eun/-neun]" which basically functions to determine the topic and contrast in a sentence, the function of the topic is further divided into five different functions and these functions can be analyzed easily through writing. This is what encourages the author to conduct research on the use of the particle "은/는 [-eun/-neun]" contained in writing, especially narrative essays. The sample of this study was 16 students of the Korean Language Education Study Program class of 2018. The research method used in this study is qualitative descriptive method, which aims to find the dominant function used of the particle "은/는 [-eun/-neun]" in the narrative essay of the Korean Language Education Study Program students. The instruments used in this study were Korean writing test questions and interviews. The results of the data analysis of this study indicate that: 1) The most dominant function of the particle "은/는 [-eun/-neun]" was found in the narrative essays of students of the Korean Language Education Study Program is the function of the topic, with the most dominant order, namely: Old Information Functions (Informasi Lama/IL) as many as 92 pieces (68,65%); New Topic Function (Topik Baru/TB) as many as 27 pieces (20,14%); Fact Functions (Fakta/F) as many as 10 pieces (7,46%); and Topic Replacement Functions (Pengganti Topik/PT) as much as 0 (0%). Then, for the Contrast Functions (Kontras/K) as many as 5 (3,73%) were found. 2) The results of the interviews with the samples show that the function often used in making narrative essays is the function of the topic. Thus, it can be concluded that the function of the particle "은/는 [-eun/-neun]" which is widely used in making narrative essays is a topic function, in line with the results found in this study that the use of the particle "은/는 [-eun/-neun]” what is mostly found in the narrative essays of students of the Korean Language Education Study Program class of 2018 is the function of topics, more specifically, the function of topics to show Old Information (Informasi Lama/IL) and the next study is expected to study the use of "은/는 [-eun/-neun]"particle in other types of essays besides narrative.
.
Key words: narrative essay, Old Information (Informasi Lama/IL), the use of “은/는 [-eun/-neun]” particle
Musicality and temporality in the art of Nam June Paik (1932-2006)
No full textThis dissertation is about the influences of Nam June Paik’s musical career in the 1950s over his video art in the following decades. Paik is remembered more as a technology-savvy video artist than as a musicologist and musical composer and his active involvement in New Music and avant-garde musician circles in the mid- to late-1950s. This dissertation points to the fact that the artist’s philosophy of music as a musician developed into the invention of video as an art medium. His musical objective was not simply to produce music but to redefine what music is and to challenge conventional notions of music. Through his incessant quest for an answer to the question, what is music?, Paik established music of his own invention, which evolved into multimedia art. After a decade of active participation in the discussion of modern music as a musical composer and musician, Paik held his first solo show, “Exposition of Music-Electronic Television,” at Galerie Parnass, Wuppertal, in 1963, in which he showcased a series of television art wired to be visually manipulated according to audio input. This show was a watershed for Paik’s career, as it propelled him into electronic image manipulation through his exploration of music, hence essentially foregrounding Paik’s creation of video art. Before he arrived at this unique combination and visual and audio, he delved into two major components of modern music: one was the idea of Gesamkunstwerk, a term that describes the synthesis of various genres of arts,professed by Richard Wagner and the other was the cutting edge technologies for electronic music in the 1950s. This dissertation addresses that the interesting marriage of the two led Paik to discover the visual aspect of his musical compositions, which expanded his music horizon and enabled him to push the envelope for unique music of his own that subsequently led to the invention of video art.Ph. D.Includes bibliographical referencesby Gyung Eun O
Why and how should we go for a multicausal analysis in the study of foreign policy? (Meta-)theoretical rationales and methodological rules
No full textThis article argues that International Relations (IR) researchers concerned with why-questions about the state's external behaviour ought to employ a multicausal approach attentive to the interrelated relationship between external structures and internal agents, presenting the (meta-)theoretical rationales underlying its argument. Here the author suggests ‘a rich/bold ontology’ regarding foreign policy behaviour. Then the article elaborates on detailed and explicit guidelines on how to traverse the bridge that connects the insights of that rich ontology to the empirical research necessary to make claims about the real world of any one moment. In a related vein, the article claims that a multicausal approach should be established using what the author calls ‘loose-knit deductive reasoning’ through which epistemological and methodological openness can be preserved in a manageable way. More importantly, this article discusses the role of theory for IR scholarship and the standards for judging theoretical contributions and progress in the field of IR. Ultimately, the author argues that a complex and flexible approach – both as a useful mode of explanation and as a progressive model of theory construction – can make important contributions to a better understanding of foreign policy and world politics, not only because it enables researchers to become keenly sensitive to the complex reality underlying a nation's foreign policy and to the interrelated relationship between structures and agents in international relations, but also because it can serve to provide a secure base for the progressive accumulation of the evidence closely associated with multiple causation on which any adequate explanation about complex foreign policy behaviour must surely be founded and without which general theory cannot really flourish
Publisher Correction: Fusion guide RNAs for orthogonal gene manipulation with Cas9 and Cpf1
No full textThe originally published version of this Article contained an error in the spelling of the author Da-eun Kim, which was incorrectly given as Da-Eun Kim. Furthermore, in Figure 1a, the Cas9 protein was positioned incorrectly during typesetting. These errors have now been corrected in both the PDF and HTML versions of the Article.</jats:p
Impact of neighborhood discovering and adaptive sampling in wireless sensor networks:
No full textWireless Sensor Networks (WSNs) are networks characterized by a dense deployment of sensor nodes. Because of the dense deployment, sensors can make interference when exchanging data messages. Besides these data messages, in location-based routing that uses geographical positions to route messages, there is a Neighborhood Discovery Protocol (NDP). It should periodically broadcast "Hello" packets to discover neighboring nodes and maintain routing tables updated. This is due to the uncertainty of the wireless environment such as varying radio interference and mobility. Due to the overhead caused by these periodic broadcasts from many nodes in certain radio range, however, NDP may heavily impact on the performance of the routing scheme itself, which in turn could affect end-to-end performance. Although this is an important and challenging problem in WSNs, this impact and the associated tradeoffs have not been fully explored in the literature. Hence, in the first half of this thesis, an analytical and experimental study is conducted to determine how parameters such as power and transmission frequency of neighborhood discovery packets affect the communication process in static and mobile environments.
In addition, WSNs are used to monitor and reliably estimate a phenomenon from the collective information provided by its constituent sensor nodes. Due to the high density of the sensor nodes, the data obtained from them are usually correlated in both space and time. Adaptive sampling is a method that employs this spatio-temporal correlation inherent in WSNs to obtain an energy-efficient estimate of the field. In the second half of this thesis, a distributed, hierarchical, cluster-based adaptive sampling framework is proposed using multiple manifestations for field estimation in three-dimensional environment. Nodes sensing highly correlated values in space are grouped to form clusters and these clusters are modified based on variation in sensor data over time. Energy efficiency is achieved through minimization of communication costs by restricting data communication to the local domain (within clusters) and by applying sleep mode. Moreover, a phenomenon is more reliably captured by using multiple manifestations than by using a single manifestation. It ensures joint optimization by adaptively varying the sampling rates in both space and time domains.M.S.Includes bibliographical references (p. 62-64)by Eun Kyung Le
Circadian regulation of innate immunity and microRNAs in Drosophila melanogaster:
No full textThe main parts of my thesis are studies aimed at investigating circadian regulation of innate immunity using Drosophila as a model system. In unrelated work, I also participated in a collaborative study showing circadian regulation of microRNAs (miRNAs) in Drosophila.
We sought to determine if the innate immune response is under circadian regulation and whether this impacts overall health status. To this end, Drosophila was infected with the human opportunistic pathogenic bacteria Pseudomonas aeruginosa as a model system. The results show that the survival rates of wild-type flies vary as a function of when during the day they are infected, peaking in the middle of the night. Also the kinetics of bacterial growth and the expression of a limited number of innate immunity genes correlate with time-of-day effects on survival. Our findings suggest that medical intervention strategies incorporating chronobiological considerations could enhance the innate immune response, boosting the efficacy of combating pathogenic infections. This study also led us to a second study where we characterized the innate immune response in the Drosophila head. We showed that the innate immunity pathway in the head is similar to the well described pathway in the body. Furthermore, the pericerebral fat body in the head or neurons are sufficient to combat bacterial infections, independent of the abdominal fat body. Our findings suggest that the pericerebral fat body may provide a fast and local immune response in the head, improving the survival outcome of Drosophila.
A minor aspect of my thesis work was unrelated to host defense. In this study, we used Drosophila to investigate the possibility that circadian clocks regulate the expression of miRNAs. From the analysis of microarray data, we found two miRNAs (dme-miR-263a and -263b) that exhibit robust daily changes in abundance in adult heads of wild-type flies that are abolished in the cyc01 mutant. Our results suggest that cycling miRNAs contribute to daily changes in mRNA and/or protein levels in Drosophila.Ph.D.Includes bibliographical references (p. 110-125)by Jung-Eun Le
Cross-cultural comparison of Korean and American social network sites: exploring cultural differences in social relationships and self-presentation
No full textNational culture is being challenged as societies evolve from their homogeneous origins. The theoretical base of this study uses two cultural dimensions, individualism-collectivism (Hofstede, 2001) and high-and low-context cultures (Hall, 1976), to unpack the effects of national culture on social network sites (SNSs). This study explores cultural differences in SNS usage patterns employing multiple methods, a paper-and-pencil survey and a content analysis of SNS profiles of survey respondents. The final analyses include a survey with 602 SNS users (361 college students in the United States and 241 college students in Korea) and a content analysis of 151 online profiles (58 Facebook and 93 Cyworld profiles).
The survey findings revealed that SNS relationship patterns replicated those of face-to-face, while reflecting users' cultural orientations. In the survey findings, members of collectivistic cultures maintained SNS relationships more tightly and narrowly. While indicating such closed SNS relationships, they also exhibited lower levels of amount of self-disclosure, higher levels of intimate and vulnerable self-disclosure, and a greater willingness of privacy sharing than members of individualistic cultures. More visually anonymous online profiles also led to their closed SNS relationships by requiring random visitors, including old friends, to attain supplementary information to identify the user. As interdependent entities, members of collectivistic cultures paid more attention to self-presentation behaviors than members of individualistic cultures. The effect of individuals' cultural attitudes on SNS usage was mostly reconfirmed in the comparison by nationality while providing evidence of the effect of national culture. In the findings of the content analysis, Cyworld users from high-context cultures adopted more indirect communication styles that represent high-context cultures than Facebook users who adopted more direct communication styles that represent low-context cultures.
The evident influence of national cultures on SNSs suggests revisiting the cultural dimensions, individualism-collectivism and high-and low-context cultures, to explore how they may explain patterns specific to particular cultures. The findings also suggest that international versions of SNS services that may be developed with the assumption of homogenous global populations of users need to be designed with the consideration of how culture influences use and shapes SNS behaviors.Ph.D.Includes bibliographical references (p. 170-178)by Seong Eun Ch
Characterization of bacterial processes in the subsurface and the atmosphere:
No full textThis dissertation describes research that seeks to expand understanding of bacterially-mediated biotransformation in subsurface groundwater and the atmosphere. In the first study a highly tetrachloroethene (PCE)-enriched culture, RU11/PCE was developed from contaminated aquifer materials. Denaturing gradient gel electrophoresis (DGGE), 16S rRNA clonal library analysis, and direct sequencing of 16S rRNA, sod and gyrB genes revealed a single bacterial species, Dehalococcoides, in the RU11/PCE culture. However, because the 16S rRNA, sod and gyrB genes of the Dehalococcoides spp. are highly conserved, the possibility that more than one strain of Dehalococcoides was present could not be conclusively eliminated. The reductive dehalogenase gene profile of the RU11/PCE culture was different than that of other previously reported Dehalococcoides pure cultures and unlike other chloroethene-respiring Dehalococcoides spp., RU11/PCE grew on PCE, TCE, cis-1,2-DCE or VC.
The second study addressed the hypothesis that the air contains an active microbial ecosystem. Rotating bioaerosol bioreactors were manufactured to keep bacteria suspended in the presence of a volatile substrate while measuring their activity. A qPCR method was developed and used along with an ATP assay, microscopy, and plate counts to enumerate airborne bacteria. Although the gas-phase reactors could retain bacteria and volatile substrates for days, results using live aerosolized Xanthobacter autotrophicus and Bacillus subtilis indicated no growth. In tests with X. autotrophicus, no culturable cells were recovered under any condition. B. subtilis aerosols from dilute substrate yielded higher culturability than aerosols from distilled water with no TSB substrate. Lack of culturability occurred despite presence of airborne bacteria over time, as measured by qPCR and ATP.
Techniques were also developed to characterize microbial communities in atmospheric samples. The bacterial components of a pooled sample of atmospheric water collected in the vicinity of Oklahoma City, OK were analyzed using DGGE and clone library analysis. From DGGE analysis, six out of eight strains detected belong to the phyla of Actinobacteria, Firmicutes, Proteobacteria and Bacteriodetes. In clone library analysis, 12 bacterial strains were identified (from 78 total) with dominant occurrence of the genera, Sphingomonas, Pedobacter, and Curtobacterium spp. The bacterial populations detected from the two methods were composed of strains of diverse origins.Ph.D.Includes bibliographical references (p. 162-179)by Eun Kyeu So
- …
