The Department of Oral and Maxillofacial Pathology was established in March 1970 by Dr. Young Pill Cho. Successive chairpersons of the department have included Dr. Han Kook Cho, Dr. Jaeo Cho, Dr. Eun Chull Kim, and Dr. Sang Wook Kang, who held the position until 2021. The tasks of the Department of Oral Pathology include conducting lectures and laboratory work for undergraduate dental students, as well as for graduate students pursuing MSD and PhD degrees. The department also engages in research within the field of oral pathology and provides diagnostic services for tissues obtained from diseases affecting the oral and maxillofacial regions. The objectives of the department are to equip students with the appropriate knowledge and skills to diagnose and develop accurate treatment plans for diseases affecting oral and maxillofacial structures through lectures and laboratory work after graduation. Since the establishment of the Master's and PhD programs in Oral and Maxillofacial Pathology, a total of 94 individuals have completed the Master's program, 45 individuals have completed the PhD program, and 1 individual has completed the Master-PhD collaboration program. Each participant completed their respective courses and obtained the appropriate degrees following the evaluation of their graduation theses.

UV and O3 are materials used in the water treatment process, and many studies have been reported to remove organic matters, contaminants, and microorganisms. In this study, we were investigated effects of Chirnomidae (Chironomus flaviplumus, Chironomus riparius), which are contamination indicator species to exposure UV and O3 for the survival rate, body color change and gene expression response. The survival rate of C. flaviplumus exposed to UV decreased to about 70% after 24 hours, and C. riparius about 50%. There was no change in the survival rate of C. flaviplumus exposed to O3, and C. riparius decreased to 95% after 10 minutes of exposure, but there was no change during the subsequent exposure time. In addition, UV and O3 exposure to the two species in body color faded in a time-dependent. In the HSP70 gene expression, C. riparius showed an increase in expression after UV exposure compared to the control group, and a significant difference was shown 12 hours after exposure (P<0.05). C. flaviplumus exposed to O3 showed a relatively low expression compared to the control group, and showed a significant difference at 10 minutes and 1 hour after exposure (P<0.05). These results reported the ecotoxicological effects on Chironomidae according to UV and O3 exposure. Therefore, the results of this study can be used as basic data to understand the effects of UV and O3, which are disinfectants used in water treatment plants, on Chirnomidae entering plants. Key words: Chironomus flaviplumus, Chironomus riparius, UV, O3, acute toxicity, survival

본 논문의 목적은 한국 조선산업의 경쟁력에 영향을 주는 정부의 산업 정책이 어떻게 변화해 왔으며, 그 변화의 원인을 담론제도주의 시각에서 분석하는 것이다. 이 연구는 1970년대부터 2000년대 각 시기별 주요 조 선산업정책과 관련된 이슈들을 살펴봄으로써 한국에서 조선산업이 위기 에 직면했을 때 주요 정책 행위자들 간에 산업정책의 방향을 두고 산업 논리 담론과 시장논리 담론이 첨예하게 대립하였으며, 이러한 담론경쟁 의 결과가 한국 조선산업정책의 변화에 중요한 영향을 미쳤음을 강조한 다. 즉, 이 논문은 담론정치를 통해 1970년대 이후 한국의 조선산업정책 이 크게 “발전주의적 육성정책→발전주의적 조정정책→자유주의적 육성 정책→자유주의적 조정정책”의 4단계로 변화하였음을 보여준다는 점에서 의의를 가진다.

Focusing on Hwaseokjeong in Paju, the work seeks to clarify the social production of Nujeong (樓亭: Korean traditional pavilions) space, which took place over the 1960s and 70s, and its cultural-political implications. To make the effort as such meaningful, a theoretical framework based not merely on the thesis of ‘social production of space’ advocated by Henri Lefebvre but especially on some discussions related to ‘state production of space’ is prepared, according to which Hwaseokjeong is analyzed and explained. As a consequence, two principal arguments are put forward: one is that Hwaseokjeong was a social space which had been built and constructed in accordance with the unique mode of production dominating Korean society at that time called ‘the state mode of production (le mode de production étatique )’; the other is that what lies beneath the denotation of a ‘social space of tradition restoration’ that Hwaseokjeong appears to carry is in fact the connotation of ‘infiltration of anti-communist ideology’. All of these claims are once again supported both by examining Roland Barthes's semiology and mythologies and by considering Hwaseokjeong's Pyeonaek (扁額: a plaque or framed text) as ‘the practice of naming power through J esa (題詞: inscribing dedications)’. While providing a succinct summary, the paper finally evaluates what ‘social production of space’ implies to social practices of architecture and related criticisms by taking into account the relationship between visibility and readability of space including buildings.

This study aims to examine the correlation between microstructures and the mechanical properties of two highstrength API X70 linepipe steels with different specimen directions and Moaddition. The microstructure of the Mo-added steel has an irregularly shaped AF, GB matrix with pearlite because of the relatively large deformation in the non-recrystallization temperature region, while that of the Mo-free steel shows a PF matrix with bainitic microstructure. In the Mo-added steel, the M/A (martensite-austenite) in granular bainite (GB) and pearlite act as crack initiation sites with decreased upper shelf energy and an increased ductile to brittle transition temperature (DBTT). Regardless of Mo addition, all of the steels demonstrate higher strength and lower elongation in the T direction than in the L direction because of the short dislocation glide path and ease of pile-up at grain boundaries. In addition, the impact test specimens with T-L direction had a lower impact absorbed energy and higher DBTT than those with the L-T direction because the former exhibit shorter unit crack path compared to the latter.

Aluminum alloy-based additive manufacturing (AM) has emerged as a popular manufacturing process for the fabrication of complex parts in the automotive and aerospace industries. The addition of an inoculant to aluminum alloy powder has been demonstrated to effectively reduce cracking by promoting the formation of equiaxed grains. However, the optimization of the AM process parameters remains challenging owing to their variability. In this study, the response surface methodology (RSM) was used to predict the crack density of AM-processed Al alloy samples. RSM was performed by setting the process parameters and equiaxed grain ratio, which influence crack propagation, as independent variables and designating crack density as a response variable. The RSM-based quadratic polynomial models for crack-density prediction were found to be highly accurate. The relationship among the process parameters, crack density, and equiaxed grain fraction was also investigated using RSM. The findings of this study highlight the efficacy of RSM as a reliable approach for optimizing the properties of AM-processed parts with limited experimental data. These results can contribute to the development of robust AM processing strategies for the fabrication of highquality Al alloy components for various applications.

The Korea Laboratory Accreditation Scheme (KOLAS) is the national accreditation body responsible for providing accreditation services to testing and calibration laboratories. The primary objective of KOLAS is to promote the quality and reliability of laboratory testing by providing nationally and internationally recognized accreditation services. Laboratories accredited by KOLAS are required to meet rigorous international standards set by the International Organization for Standardization (ISO) and are subject to regular assessments to ensure ongoing compliance with the standards. KOLAS accreditation is highly regarded both domestically and internationally, and is recognized for providing high-quality and reliable testing services. The nuclear analysis laboratory at KINAC has been working to establish a quality management system to ensure the external reliability of analytical results and to secure its position as an authorized testing agency. To achieve this, a detailed manual and procedure for nuclear material analysis were developed to conform to the international standards of ISO/IEC 17025. This study presents the preparation process for establishing the management system, focusing on meeting technical and quality requirements for the implementation of the ISO/IEC 17025 standard in the KINAC nuclear analysis laboratory, specifically in the field of chemical testing (dosimetry, radioactive, and neutron measurement subcategories). The preparation process involved two tracks. The first track focused on satisfying technical requirements, with Thermal Ionization Mass Spectrometer (TIMS) and Inductively Coupled Plasma-Mass Spectrometer (ICP-MS) selected as the major equipment for analysis. Analytical methods for determining isotope ratios and concentrations of nuclear materials were determined, and technical qualification was ensured through participation in proficiency test programs, inter-experimenter comparison tests, and uncertainty reports. The second track focused on developing the quality system, including quality manuals, procedures, and guidelines based on the requirements of the ISO/IEC 17025 standard. Various implementation documents were produced during the six-month pilot period, in accordance with the three levels of documents required by the standard. Implementation of ISO/IEC 17025 is expected to have a systematic quality management process for the analysis lab’s operations and to increase confidence in KINAC’s nuclear analysis.

Bacterial phytopathogen Pectobacterium causes soft rot disease in several vegetable crops globally, resulting in heavy agricultural losses at both the pre and postharvest stages. The present work was carried out to screen Kimchi cabbage genetic resources conserved at the National Agrobiodiversity Center, Rural Development Administration, Korea, for resistance against the soft rot pathogen Pectobacterium carotovorum subsp. carotovorum KACC 21701 over a period of three years (from 2020 to 2022). Infection of the phytopathogen was carried out at four-leaf stage and for each accession, twenty-five plants per germplasm were infected with KACC 21701. Kimchi cabbage cultivars Wangmatbaechu, Seoulbaechu, and CR Kiyoshi were used as control. Seven-days post-infection, the Disease Index (DI) values were manually recorded from zero to four, zero matched perfectly heathy plants and four completely dead plants. The 682 accessions of Kimchi cabbage exhibited varying degrees of disease resistance to KACC 21701 and thirty accessions, exhibiting a DI≤2, were considered for replication studies. During the replication studies, four landrace germplasms (IT102883, IT120036, IT120044, and IT120048) and one cultivar (IT187919) were confirmed to be moderately susceptible to KACC 21701. Results of the preliminary screening as well as replication studies were documented for the all the 682 germplasms. Addition of such information to the passport data of stored germplasms might serve as potential bio-resource for future breeders and researchers to develop resistant varieties or study the mechanisms involved in resistance of plants to such phytopathogen.

본 연구는 1960-70년대 서부 미니멀리즘의 작업 경향에서 드러난 지역성을 통해 이들의 독자성을 고찰하고자 한다. 서부 미니멀리즘은 로스앤젤레스 화단이 주체적으로 형성한 예술 운 동이라는 의의가 있다. 서부 미니멀리즘은 동시대 뉴욕 미니멀리즘과 유사성을 공유함에도 불구 하고, 이들은 로스앤젤레스의 지역성에 기반한 독자성을 형성하였다. 이들의 독자성이 구축되는 과정은 회화 매체를 주축으로 이루어졌으며, 이는 뉴욕 미니멀리즘과 구별되는 주요한 지점이다. 이에 본 연구는 서부 미니멀리즘의 지역성이 특히 이들의 회화 작업에서 드러났음에 주목한다. 20세기 중반 기존 추상표현주의를 모방하던 로스앤젤레스 화단은 셰이프트 캔버스 및 하드 엣지 형태의 비(非)-전통적 회화 작업을 통해 서부 미니멀리즘을 발단시켰다. 이후 서부 미니멀리즘은 동시대 팝아트와 맞물려 피니쉬 페티쉬(Finish Fetish)로 이어졌다. 이때 피니쉬 페티쉬는 로스 앤젤레스 자동차 문화라는 지역성을 바탕으로 로스앤젤레스 팝아트로서의 정체성을 구축하였 다. 또한, 서부 미니멀리즘의 회화에 대한 지속적 관심은 1970년대 오브제 및 공간 작업으로 전 환한 일부 작가들의 회화로의 복귀로도 나타난다. 회화의 복귀는 3차원 형태의 작업으로 총체적 으로 전환한 뉴욕 미니멀리즘과 비교되는 서부 미니멀리즘의 특징이다.