This study used transmission electron microscopy (TEM) to investigate the micro-morphological features of two formaldehyde to urea (F/U) mole ratio liquid urea-formaldehyde (UF) resins with three hardener levels as a function of the curing time. The micro-morphological features of the liquid UF resins were characterized after different curing times. As a result, the TEM examination revealed the presence of globular/nodular structures in both liquid UF resins, while spherical particles were only visible in the low F/U mole ratio resins. The high F/U mole ratio liquid UF resins also showed extensive particle coalescence after adding the hardener, along with the appearance of complex filamentous networks. When the resins were cured with a higher amount of hardener and longer curing time, the spherical particles disappeared. For the low mole UF resins, the particles tended to coalesce with a higher amount of hardener and longer curing time, although discrete spherical particles were still observed in some regions. This is the first report on the distinct features of the crystal structures in low F/U mole ratio UF resins cured with 5% hardener and after 0.5 h of curing time. In conclusion, the present results indicate that the crystal structures of low F/U mole ratio UF resins are formed during the curing process.

Ischemic stroke is the most common type of stroke in humans. The purpose of this study was to evaluate the diagnostic value of magnetic resonance imaging (MRI) in a canine model of stroke. Ischemic stroke was induced by using prepared autologous thrombus. The dogs were placed in lateral recumbency on the operation table and the cervical area of each dog was sterilized by using alcohol. After making a cervical incision, the common carotid artery and internal carotid artery (a branch of the common carotid artery that supplies an anterior part of the brain) were exposed. A 200 μL injection of the autologous thrombus prepared 24 hr prior to surgery was delivered with a 20 gauge venous catheter through an internal carotid artery. After successful delivery of the autologous thrombus, the venous catheter was removed, and the cervical incision was sutured. Neurologic signs including generalized seizures, tetraparesis, and altered mental status, were observed in all 3 dogs after induction of ischemic stroke and the signs manifested immediately after awakening from anesthesia. T1- and T2-weighted images and fluid-attenuated inversion recovery (FLAIR) images of the brain were acquired 1 day before and 1 day after surgery. On the day following ischemic stroke induction, MRI revealed multifocal lesions in the cerebral cortex and subcortex such as T1 hypointensity, T2 hyperintensity, FLAIR hyperintensity, and diffusion-weighted hyperintensity in all 3 dogs. Upon postmortem examination, ischemic lesions were found to be consistent with the MRI findings and they were unstained with 2% triphenyltetrazolium chloride. Histologic features of the earliest neuronal changes such as cytoplasmic eosinophilia with pyknotic nuclei were identified. Neuropil spongiosis and perivascular cuffing were also prominently observed at the infarcted area. The present study demonstrated the features of MRI and histopathologic findings in canine ischemic stroke models.

이 글은 학교교육 내부의 문제를 넘어서 사회적 논쟁의 대상이 되고 있는 한자교육의 성격 및 목표와 관련한 문제들을 포괄적으로 검토하고, 체계적이고 효율적인 한자교육을 위한 방안을 이론적 배경과 아울러 살펴본 것이다. 전근대 시기 의심 없는 지위를 누리던 한자는 해방 이후 심각한 변화를 겪게 되었다. 팽배한 민족주의에 의해 일제의 잔재로 낙인찍히고 제한적인 수준의 언어교육을 통해 충직한 ‘국민’을 육성하고자 했던 국가주의에 의해 또다시 낡은 유물로 취급되었다. 이는 어문정책에도 고스란히 반영되어 한자교육의 필요와 효용에 대한 논란을 낳았으며, 사교육을 통한 한자능력의 습득을 부채질하였다. 초등학교 한자교육에 있어서 언어교육의 일환으로 보는 입장과 한문교육의 기초단계로 보는 입장이 병존하고 있는 것도 따지고 보면 이러한 교과 외적 상황에 대한 대응방식의 차이로 볼 수 있다. 한편 3차 교육과정부터 2009 개정 교육과정까지 한자교육 방면의 변화는 다음 네 가지로 요약된다. 첫째, 학습 내용을 제시하는 방식의 차이는 있지만 학습 내용 자체에는 큰 변화가 없었다. 둘째, 한때 쓰기 교육을 중시했으나 어문정책 및 언어 환경의 변화로 인해 최근에는 크게 강조하지 않고 있다. 셋째, 기능적 지식의 습득으로부터 점차 인성의 함양, 가치관의 형성 등 정의적 영역을 강조하는 추세다. 넷째, 학습 내용이 점차 명료화･구체화되며 교과목표와 복합적･중층적인 관련을 맺고 있다.한자교육 이론 방면에 있어서는 여러 가지 과제가 산적해 있다. 일단 한자와 한문의 학습상관성에 대해 분명히 정리할 필요가 있다. 또한 인문교양 교육으로서의 특징과 도구적 언어교육으로서의 특징에 대한 심도 깊은 논의도 요구된다. 이밖에도 한자교육을 위한 한자목록을 한문교육용 기초한자 1,800자 범위 안에 한정하여야 하는지, 한자의 짜임(六書)과 部首 교육을 지금처럼 유지하는 것이 합당한지에 대해서도 다시 생각해볼 여지가 있다.

The main purpose of this study is to introduce and examine a multidimensional model of almost all relevant social media characteristics and their impact on brand perception and brand behavior. In order to incorporate social media’s high complexity we introduce our concept of SMURF and its related outcomes. Therefore we follow the original idea of Muniz and O’Guinn (2001) that define a brand community as a customer-customer-brand triad. Furthermore, we suggest an extension of their model that includes four dimensions covering all SMURF of a social media brand presence (SMBP), namely (1) customer-brand relation, (2) customer-customer relation, (3) customer-community relation and (4) customer-channel relation. For our defined core constituents of brand perception as well as for the essential elements of brand behavior already existing and tested reflective measures were used. Regarding the multidimensional construct of SMURF, the measurement instrument by Wiedmann, et al. (2013) was used. In detail, any SMURF core element was captured with one global item. Furthermore, any reflective and formative measures were specified to those brand and Facebook fan page which has been tracked most frequently by the respondent. The first contribution is to provide a multidimensional framework of value-based drivers of SMURF with special focus on an overall brand presence context. Second, the findings contribute to explain the consequences of social media attractiveness such as unique relevance features which provide a great brand appeal. In this study, customers who are strongly attracted to a brand fan page experience a high positive brand perception as well as a high positive brand behavior. Third, the empirical findings of the applied PLS-SEM approach indicate that customers have a specific motivation of being attracted and connected to a brand in a social media context.

본 연구의 목적은 하천복원 및 하천평가의 근거를 마련하기 위하여 국내 자연하천의 유형 및 특성을 연구하는것이다. 이를 위하여 국내 섬 지방을 제외한 전국의 다양한 자연하천 조사구 95개소를 선정하여, 각 조사구의 자연환경적, 물리적 및 식물⋅식생특성을 조사 및 분석하였다. 그 결과, 95개 조사구는 하천의 규모(4개 유형), 고도(3개 유형), 하상재료(5개 유형)에 의거 모두 24개 유형으로 분류할 수 있었다. 그리고 각 하천유형과 식물⋅식생출현성과 가장 상관성이 강한 환경인자인 고도에 따라서 24개 하천유형을 다시 평지(고도 200m미만), 산지(고도 200m이상 500m미만), 고산지(고도 500m이상)의 3개 유형으로 크게 구분하여 하천의 물리적 구조, 식물⋅식생적 특성을 비교하였다. 먼저 평지하천의 대표적인 특징은 고산지나 산지하천과 비교하여 하천규모는 크지만 하상재료는 작은 편이고, 홍수터가 잘 발달하는 계곡횡단면 형태가 많았으며, 하천규모가 클수록 횡단폭의 변화와 사주발달이 양호하고 사행성이 두드러지는 편이며, 대표적 식생은 버드나무군락이었다. 반면에 산지와 고산지하천은 평지하천에 비하여 하천규모가 작고, 하상재료는 굵고 거칠며, 계곡횡단면 형태는 홍수터가 발달하지 못하는 좁은 형태이었다. 또한 사행도나 사주발달도 평지하천에 비하여 미약하였다. 산지하천의 두드러진 대표식생은 졸참나무-, 굴참나무-, 때죽나무군락이었으며, 고산지하천에서는 소나무-, 신갈나무-, 물푸레나무군락이었다.

동해 연안양식장 주변해역의 월별 변화에 따른 수괴의 분포와 생물화학적 특성을 파악하기 위하여 2012년 짝수 월(2-12월)에 속초, 죽변, 감포 연안의 3개 지점에서 CTD 관측과 함께 용존산소(DO), 클로로필 a(Chl-a), 질산염과 인산염의 N/P 비의 분포 특성을 조사하였다. 속초, 죽변 및 감포 해역에 대한 등밀도선 위의 수온(T)-염분(S)도로 수괴를 분석한 결과, 이들 해역은 대마난류 표층수, 대마난류 중층수 및 북한한류수로 나타났다. 이들 수괴에서 수온과 염분의 분포 범위를 보면, 대마난류 표층수는 수온 20-28.3 ℃ 와 염분 31.04-33.75, 대마난류 중층수는 수온 8.1-16.3 ℃ 와 염분 33.00-34.49, 북한한류수는 수온 1.8-9.4 ℃ 와 염분 33.78-34.42를 나타내었다. DO는 동계(12월, 2월)에 남에서 북, 봄철(4월, 6월)과 가을철(10월)에는 상층에서 하층, 하계(8월)는 중층을 중심으로 상하층으로 갈수록 그 농도가 높았다. Chl-a 농도는 동계(2월), 춘계(4월), 추계(10월-12월)에 0.4 μg/L 이하로 낮았고, 6-8월은 다른 월에 비해 고농도가 넓게 분포하였다. 특히, 감포는 8월에 강한 수온과 염분의 약층이 형성된 곳에서 띠 형태로 2 μg/L 이상의 고농도가 분포하였다. N/P 비는 2-6월과 12월은 전반적으로 그 비가 16 이하로 질산염이 영양염의 제한요소로 작용하였고, 8-10월은 그 비가 16 이상으로 연안 부근에서 인산염이 영양염의 제한 요소로 작용한 곳이 많이 나타났다.

We investigated the nanostructural, chemical and optical properties of nc-Si:H films according to deposition conditions. Plasma enhanced chemical vapor deposition(PECVD) techniques were used to produce nc-Si:H thin films. The hydrogen dilution ratio in the precursors, [SiH4/H2], was fixed at 0.03; the substrate temperature was varied from room temperature to 600˚C. By raising the substrates temperature up to 400˚C, the nanocrystalite size was increased from ~2 to ~7 nm and the Si crystal volume fraction was varied from ~9 to ~45% to reach their maximum values. In high-resolution transmission electron microscopy(HRTEM) images, Si nanocrystallites were observed and the crystallite size appeared to correspond to the crystal size values obtained by X-ray diffraction(XRD) and Raman Spectroscopy. The intensity of high-resolution electron energy loss spectroscopy(EELS) peaks at ~99.9 eV(Si L2,3 edge) was sensitively varied depending on the formation of Si nanocrystallites in the films. With increasing substrate temperatures, from room temperature to 600˚C, the optical band gap of the nc-Si:H films was decreased from 2.4 to 1.9 eV, and the relative fraction of Si-H bonds in the films was increased from 19.9 to 32.9%. The variation in the nanostructural as well as chemical features of the films with substrate temperature appears to be well related to the results of the differential scanning calorimeter measurements, in which heat-absorption started at a substrate temperature of 180˚C and the maximum peak was observed at ~370˚C.

The design composition elements and the mechanical behavior of trusses have been investigated for Pratt trusses. As a result, it was determined that the design composition elements of the trusses consist of the composition of webs, the distance between joints, the chords profile, the depth of the truss, and the double chord composition. In addition, by analyzing models with a variation of elements, comprehensive features of structural behavior have been presented for variations of design of Pratt trusses. This is to provide more effective and useful design information on truss structure in the architectural and structural planning stage.

Neurotized melanocytic nevus (NMN) is categorized into intradermal/intramucosal type of acquired melanocytic nevus. In contrast to typical intramucosal nevus which has relatively distinct histological features, the diagnosis of NMN requires more attention due to its mimicry of benign neural tumors such as neurofibroma. The majority of lesional cells, NMN cells, showed a spindle cell morphology and abundant, eosinophilic cytoplasm which were positive for S-100, vimentin, and collagen type IV. Positive reaction for MART-1 was detected in the NMN cells as well as in the epithelioid nevus cells beneath the epithelium. Neurofibroma exhibited diffuse positivity for S-100, vimentin, CD34 and collagen type IV, but never expressed MART-1. Toluidine blue stained the numerous mast cells scattered in the lesion of neurofibroma, compared to the relatively minor detection of mast cells in NMN. Therefore, MART-1 is a useful marker in differentiating NMN from neurofibroma.

The study is an attempt to investigate on the features of using Idioms in "HongLouMeng", a Chinese literature. While classifying and analyzing idioms used in "HongLouMeng". The study conclude that there are two categories of the features of using Idioms in "HongLouMeng". One is the features in style such as number of letters and signal article. The other is the features in terms of content such as metaphor, replaceability and similarity. First, number of letters. Based on the number of letters, the idioms are classified into four-lettered idioms and non four-lettered idioms which consist of more or less than six letters. Chengyu(成語) is commonly four-lettered, while Suyu(俗 語) is mostly six lettered. Xiehouyu(歇后語) has the largest number of letters since it has to be considered with preceding and following letters. Second, signal articles. The articles such as ‘俗語說(Suyushuo)’ helps idioms to be clear with the intended meaning. Third, metaphor. As the almost every idiom is used as a figurative expression, idioms in "HongLoumeng" also tend to be has same effect. Forth, replaceability. Suyu(俗語) can be replaced by Chengyu(成 語) or Xiehouyu(歇后語) and vice versa. The virtue of the author's fluent commend of language allows the replaceability between idioms, in the way of using Chengyu(成語) or Xiehouyu(歇后語) to implicate Suyu(俗語). Fifth, similarity. Throughout "HongLouMeng" a number of idioms were replaced into similar expressions with same meaning which use a new word or rephrase the order of words. Idioms which contain same lessons and messages are also found numerous times with completely different structure and words. Replacing idioms instead of repeating exactly same expression shows the outstanding linguistic ability of author. The study on the five features would help to understand idioms in "HongLouMeng" more clear and make it much interesting. The author's fluent commend of language is worth to be consideredfrom various angles as it plays important role in a linguistic and a culturological points of view.

The study is an attempt to investigate on the features of using Idioms in "HongLouMeng", a Chinese literature. While classifying and analyzing idioms used in "HongLouMeng". The study conclude that there are two categories of the features of using Idioms in "HongLouMeng". One is the features in style such as number of letters and signal article. The other is the features in terms of content such as metaphor, replaceability and similarity. First, number of letters. Based on the number of letters, the idioms are classified into four-lettered idioms and non four-lettered idioms which consist of more or less than six letters. Chengyu(成語) is commonly four-lettered, while Suyu(俗 語) is mostly six lettered. Xiehouyu(歇后語) has the largest number of letters since it has to be considered with preceding and following letters. Second, signal articles. The articles such as ‘俗語說(Suyushuo)’ helps idioms to be clear with the intended meaning. Third, metaphor. As the almost every idiom is used as a figurative expression, idioms in "HongLoumeng" also tend to be has same effect. Forth, replaceability. Suyu(俗語) can be replaced by Chengyu(成 語) or Xiehouyu(歇后語) and vice versa. The virtue of the author's fluent commend of language allows the replaceability between idioms, in the way of using Chengyu(成語) or Xiehouyu(歇后語) to implicate Suyu(俗語). Fifth, similarity. Throughout "HongLouMeng" a number of idioms were replaced into similar expressions with same meaning which use a new word or rephrase the order of words. Idioms which contain same lessons and messages are also found numerous times with completely different structure and words. Replacing idioms instead of repeating exactly same expression shows the outstanding linguistic ability of author. The study on the five features would help to understand idioms in "HongLouMeng" more clear and make it much interesting. The author's fluent commend of language is worth to be consideredfrom various angles as it plays important role in a linguistic and a culturological points of view.

The present study examined the histological characteristics of adult testis in the long-beaked common dolphin (Delphinus capensis) from Korean waters and the localization of DEAD-box polypeptide 4 (DDX4; a germ cell marker) and vimentin (a Sertoli cell marker) expression in the dolphin testis compared with that in terrestrial mammals, including dogs and rats. The seminiferous tubules of dolphin testis have very small or completely closed lumens, and spermatogenic cells and Sertoli cells within the tubules cannot be differentiated. Immunohistochemical analysis showed that, in the dolphin testis, DDX4- and vimentin-positive cells were scattered extensively within the tubule, whereas in the dog and rat testis, DDX4 immunoreactivity was localized in spermatogenic cells of the adluminal compartment, and vimentin immunoreactivity was localized in Sertoli cells of the basal compartment in the seminiferous epithelium. These results suggest that the histological characteristics of the seminiferous tubules in the dolphin testis differ from those of terrestrial species.

본 연구의 목적은 여성 지체장애인을 대상으로 24주간 규칙적인 휠체어댄스 프로그램 참여가 혈중지질 및 심리적 웰빙에 어떠한 영향을 미치는지를 규명하여 여성 지체장애인의 생리적, 심 리적 효과에 대한 지표를 제시하는데 그 목적이 있다. 연구대상은 A시에 거주하는 B장애인복지 센터 회원들 중 전혀 운동 경험이 없는 40세 이상의 여성 지체장애인 총 20명을 대상으로 실험 집단 10명(지체기능장애 8명, 관절장애 2명)과 통제집단 10명(지체기능장애 7명, 관절장애 3명)으 로 무작위로 할당되어 구성하였다. 측정된 자료는 IBM SPSS Statistics 19.0 통계프로그램을 이용 하여 실험집단과 통제집단 간의 평균과 표준편차를 종속변인별로 구하였다. 두 집단 간의 평균 비교는 사전검사 측정값을 공변인으로 하여 사후검사 측정값을 서로 비교하는 공분산분석 (Analysis of Convariance)으로 분석하였으며, 통계적 유의수준은 .05로 설정하였다. 연구결과, 첫 째, 휠체어댄스 프로그램 참여는 여성 지체장애인의 혈중지질의 총 콜레스테롤과 중성지방은 감 소시켰으며, 고밀도 지단백콜레스테롤은 증가시켰다. 둘째, 휠체어댄스 프로그램 참여는 여성 지체장애인의 심리적 웰빙의 즐거움, 유능감, 자아실현, 몰입감에 긍정적 영향을 미쳤다. 따라서 24주간의 휠체어댄스 프로그램은 여성 지체장애인들의 신체활동의 감소와 장애로 인해 저하된 생리적 변화의 개선뿐만 아니라, 특히 심리적요인인 심리적 웰빙에 매우 긍정적인 결과를 가져 온다는 결론을 얻었다.

구글 어스를 비롯한 인터넷 지도와 세계적인 지명관련 데이터베이스인 미국의 NGA의 GEONet지명 서버 같은 경우 정작 지명 사용자인 현지의 한국인이 이해하지 못하는 서양식 지명이 많이 발견된다. 특히 이러한 서양식 지명은 해안지명과 해저지명에 가장 흔하게 발견되고 있다. 그 지명들의 역사적인 유래를 정확히 파악할 수 있다면, 지명표준화라는 측면에서 오류 지명을 시정하고 정확한 지명이 사용될 수 있도록 할 수 있다는 점에서 매우 중요하다. 실제 18세기부터 한국해역에 자주 출몰한 서양 선박들은 통상을 요구하거나 선교의 자유를 요구하거나 아니면 단순히 포경을 비롯한 어업활동을 위해 한반도 해역을 통과하면서 언어의 장벽과 정부의 쇄금정책에 의해 현지지명을 알 수 없었고, 이러한 이유로 그들의 해도에 자신들의 명명방식에 따라 서양 명칭을 부여한 것으로 보인다. 본 연구에서 깊이 다루지 못한 러시아, 네덜란드 및 미국의 역할에 대한 연구가 더 이루어질 필요가 있다.