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      • The Effect of Font Type and Font Size on the Legibility in Smart Watch Usage of the Elderly People

        Na Kyoung You,Minjee Kim,Chunyan Shan,SungYub Kim,Jungyoon Song,Sangmin Yeo,Donghyun An,Myung Hwan Yun 대한인간공학회 2017 대한인간공학회 학술대회논문집 Vol.2017 No.11

        Objective: The aim of this study is to investigate the effect of character size and font type on legibility of elderly in smart watch usage, and to suggest a design guideline for smart watch - dedicated for legibility enhancement of the elderly people. Background: As the elderly population increases, the demand for health care and relevant costs for elderly are increasing correspondingly. Hence, there have been researches to implement wearable device onto the health monitoring system for elderly. In such manner, smart watch is one of the wearables popularly studied. However, poor legibility due to the small display of smart watch is considered to be a problem for the elderly to fully use it. Thus, legibility should be improved to allow elderly to use the smart watch more conveniently. Method: The task of selecting a target stimulus within two simultaneously given stimuli on a smart watch display was given to participants. A total of 10 sets of stimuli was given, and they were in combination of single font size and type. All subjects performed the task for a total of 8 stimuli sets combining 4 font sizes and 2 font types. The dependent variable is the time to select stimulus and the error occurrence frequency: the number of interference stimulus chosen. Results and Conclusions: In Gothic type, there was no significant differences in recognition time between font sizes. However, in the case of Myung, 9pt, 10pt is better than 11pt, and 12pt. In the case of error frequency, it is shown that 10pt and 11pt results better compared to other two font sizes in case of Gothic. There was no difference in Myung. Application: The results of the study can be the useful guideline to improve legibility for the elderly.

      • SCOPUSKCI등재

        Variation in clinical usefulness of biomarkers of acute kidney injury in young children undergoing cardiac surgery

        Baek, Hee Sun,Lee, Youngok,Jang, Hea Min,Cho, Joonyong,Hyun, Myung Chul,Kim, Yeo Hyang,Hwang, Su-Kyeong,Cho, Min Hyun The Korean Pediatric Society 2020 Clinical and Experimental Pediatrics (CEP) Vol.63 No.4

        Background: Acute kidney injury (AKI) is one of the most significant postoperative complications of pediatric cardiac surgery. Because serum creatinine has limitations as a diagnostic marker of AKI, new biomarkers including neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), and interleukin-18 (IL-18) are being evaluated to overcome these limitations and detect AKI at an early stage after cardiac surgery. Purpose: This study aimed to investigate the clinical usefulness of these biomarkers in young children. Methods: Thirty patients with congenital heart diseases who underwent cardiac surgery using cardiopulmonary bypass (CPB) were selected, and their urine and blood samples were collected at baseline and 6, 24, and 48 hours after surgery. Serum creatinine and blood urea nitrogen levels as well as NGAL, KIM-1, and IL-18 levels in urine samples were measured, and clinical parameters were evaluated. Results: Of the 30 patients, 12 developed AKI within 48 hours after cardiac surgery. In the AKI group, 8 of 12 (66.6%) met AKI criteria after 24 hours, and urine KIM-1/creatinine (Cr) level (with adjustment of urine creatinine) peaked at 24 hours with significant difference from baseline level. Additionally, urine KIM-1/Cr level in the AKI group was significantly higher than in the non-AKI group at 6 hours. However, urine NGAL/Cr and IL-18/Cr levels showed no specific trend with time for 48 hours after cardiac surgery. Conclusion: It is suggested that urine KIM-1/Cr concentration could be considered a good biomarker for early AKI prediction after open cardiac surgery using CPB in young children with congenital heart diseases.

      • KCI등재
      • 稻熱病 抵抗性에 關한 硏究

        金明運,盧愼圭,白壽鳳,李成泰,任文淳,朴澤奎,李麗夏 건국대학교 1974 學術誌 Vol.17 No.1

        This study was made to investigate the degree of rice blast disease developing in various plants and also the relationship between the disease developing and the amount of content of nutrients in rice plants which were differently dressed. Possibility for culture of rice-blast race was studied and the structure of infected leaves were observed by electron microscope. 1) The varieties sampled, Pung-kwang, Jin-heung, Pal-tal, Pung-ok and Tong-il, were seeded and cultivated in pots. When fifth or sixth leaf emerged, the races of blast T,C,N were innoculated in all varieties. In dressing test Pung-ok, which leas susceptible to blast, was dressed with nitrogen fertilizer in ordinary and twofold and in none-dressing or dressing of silicon fertilizer. When the fifth or sixth leaf was appeared, races T, C, N was innoculated in each varieties of pot. In all experiment the degree of infection was checked out according to the order of leaf, and at the same time, the relationship between the degree of disease developing and the contents of nutrients by determining the total nitrogen, total sugar, phosphoric acid, kalium, silicon dioxide soluble nitrogen and soluble sugar was studied. The occurance of symptom was relatively frequent in upper primary or secondary leaf in all varieties regardless of the kind of fertilizers or their dressing amount. Comparing the occurrencies of disease development in examined varieties, Jin heung was lowest and Pung-ok was highest, while Tong-il was completely free from the infection of the disease. The race T-type attacked most seriously the varieties of Jin-heung, Pal-Tal and Pung-kwang except Pung-ok, C-type was moderate and N-type was very weak in Pung-ok. In the amount of dressing, the occurance of disease was very rare in the rice plant of N-ordinary-silicon fertilizer dressed and frequent in that of nitrogen fertilizer-twofold-and-silicon fertilizer none dressed. The disease developing differed with the races, indicating T-type was most poweful, C-type moderate while N-type was weak. In the interaction between the contents of nutrients in riceplant and the degree of disease developing, Pung-ok, which was very abundant in nitrogen, phosporic acid, glutamic acid, asp artic acid glutamine, asparagine, cystine, serine and sucrose but little in sugar, kalium and silicondioxide, was most susceptible to the disease. Jin-heung, resistant one, was opposite to Pung-ok in all aspects. As a result there was a correlation between the kind or amount of nutrients in rice plant and the disease attack. According to the amount of dressed fertilizer, the rice plant dressed in N-twofold and silicon dioxide none dressed had the larger amounts of total nitrogen, phosphoric acid, aspartic acid, glutamic acid and gldtamine but little in sugar and silicon dioxide contents. While in the rice plant dressed with N-ordinary and silicon fertilizer. the tendancy of disease occuring was low respectively. 2) The study on the cultivation of race T,C,N in the media added such organic acid as succinic acid, valeric acid, malic acid, ketoglutaric acid and such phenolic chlorogenic acid and salicylic acid was made. The result of which was as follow: ① There were no differences in growth of T,C,N type races. ② In the media added organic acid the growth was favorable. ③ In the media added chlorogenic acid the growth was promoted but in the one added salicylic acid the growth was inhibited. 3) The morphological changes of the infected waves alls the structure of hypha of blast which had penetrated into the leaf cell of Pung-ok, which was susceptible one to the disease, was observed by electric microscope. The following facts were found. ① In healthy leaves normal nucleus, mitohcondria, chloroplast, entoplasmic reticulum, vacuole and cytoplasm, especially round substances, were chearly observed by electron microspcope. ② In the infected leaves, the space of the nucleus double memberance was enlarged, and some of the nucleu walls were destroyed. The thinlayer structure of glanalamelae in lamela system was enlarged, somewhere spates were appeared while stromas were disappeared. In mitochondria the spaces of the double membrance were enlarged. ③ Cytoplasm of cell which were attacked by hypha was completely destroyed and the hypha lost their normal structure. ④ In the structure of hypha which penetrated into the cell wall of epidermis, nucleus, mitochondria, round ectoplasmic reticulum, vacuole and substances were clearly observed.

      • Helicobacter pylori와 대장균의 Shuttle Vector 개발

        조명제,이우곤,이상룡,김경희,안영숙,김성희,김현주,류복덕,최여정,윤영혜,백승철,전영석,이광호 경상대학교 유전공학연구소 1997 遺傳工學硏究所報 Vol.16 No.-

        In this study, a vehicle vector using cryptic plasmids was constructed for gene transfer in Helicobacter pylori. pHP51(3.9 kb) and pHP489(1.2 kb) were selected for constructing vectors from cryptic plasmid of H. pylori isolates in Korea. The HindⅢ-digestedDNA fragment(1.2kb) of pHP489 and 1.6kb DNA fragment of pHP51 were ligated with a kanamycin resistance gene(aph3'-Ⅲ) from C. jejuni to produce the recombinant plasmids pHP489K and pHP51K, respectively. Transformation frequency of pHP51K by electroporation was low. But pHP489K could be effectively transformed into various H. pylori strains. In order to design an intermdiate vehicle vector for gene transfer into H. pylori, pBlueHP489K was prepared by recloning pHP489K DNA into pBluescript and pTZ19R vector. This vector permitted the DNA fragment containing pHP489 sequence, aph3'-Ⅲ, and cloned DNA to be cut and self-ligated in the SacⅠ site after cloning. ureA and ureB gene were inserted into pBlueHP489K, resulting in pBlueHP489K/AB. The DNA fragment containing pHP489, kanamycin resistance gene(aph3'-Ⅲ), and urease structural gene was cut away from pBlueHP489K/AB and self-ligated to generate pBlueHP489K/AB. pBlueHP489K/AB made urease-negative H. pylori strains restore their urease activity. By this experiment, pBlueHP489K was confirmed to be the vehicle system for transferring H. pylori genes.

      • KCI등재
      • 중소기업형 CIM시스템 구축을 위한 생산계획수립 및 실적파악 모듈

        최후곤,신완선,장중순,서준성,여명구,안동근,김진봉 成均館大學校 科學技術硏究所 1996 論文集 Vol.47 No.2

        This study Focuses on developing several modules involved in an integrated production information system for medium- or small-sized industries. The modules of order management, quality control, production scheduling, and shop management are executed for an example case industry. The potential values of this research includes that the major information modules to collect, analysis, and display production data and shop data for constructing the computer integrated manufacturing system(CIMS) are programmed with various features of medium- or small-sized industries

      • SCIESCOPUSKCI등재

        Results of immediate loading for implant restoration in partially edentulous patients : a 6-month preliminary prospective study using SinusQuick EB implant system

        Kim, Jong-Hwa,Kim, Young-Kyun,Yi, Yang-Jin,Yun, Pil-Young,Lee, Hyo-Jung,Kim, Myung-Jin,Yeo, In-Sung,Yun, Pil-Young,Lee, Hyo-Jung,Kim, Myung-Jin,Yeo, In-Sung 대한치과보철학회 2009 The Journal of Advanced Prosthodontics Vol.1 No.3

        STATEMENT OF PROBLEM. Many dental clinicians are concerned about immediate loading of inserted implants. However, there have been few clinical studies surveying the success rates of immediate loading, based on Korean implant systems. PURPOSE. The aim of this study was to evaluate the outcome of immediate functional loading of the implant (SinusQuick EB, Neobiotech Co., Seoul, Korea) in partially edentulous maxilla or mandible. MATERIAL AND METHODS. Total 15 implants were placed. Within 2 weeks after implant insertion, provisional implant-supported fixed partial dentures were delivered to the patients. Quantitatively, marginal bone loss was measured at the time of immediate loading, after 3-months of continued loading and at the last follow-up. The mean follow-up period was 4.8 months. RESULTS. Mean marginal bone loss from implant surgery to early loading, 3-months follow-up and last follow-up was 0.03 %0.07 mm, 0.16 %0.17 mm and 0.29%0.19 mm. No implant failed up to 6 months after insertion, resulting in a 100% survival rate. CONCLUSION. Immediate loading exhibited high success rate in partial edentulism for up to 6 months. Well-controlled long term clinical studies with large sample size are necessary to confirm this finding.

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