• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.24 no.1
• /
• pp.103-109
• /
• 2015

This paper introduces a multi-purpose smart fusion sensor. Normally, this type of sensor can contribute to energy savings specifically related to lighting and heating/air conditioning systems by detecting individuals in an office building. If a fire occurs, the sensor can provide information regarding the presence and location of residents in the building to a management center. The system consists of four sensors: a thermopile sensor for detecting heat energy, an ultrasonic sensor for measuring the distance of objects from the sensor, a fire detection sensor, and a passive infrared sensor for detecting temperature change. The system has a wireless communication module to provide the management center with control information for lighting and heating/air conditioning systems. We have also demonstrated the usefulness of the proposed system by applying it to a real environment.

• Korean Journal of Pharmacognosy
• /
• v.9 no.4
• /
• pp.157-167
• /
• 1978

Atherosclerosis is associated with the presence of extracellular lipid droplets and large fatty deposits, both of which are to be covered at the surface mainly by zwitterionic phospholipids. The development of atherosclerosis is often associated with the accumulation of calcium. Furthermore, the presence of glycosaminoglycans directly underlying fatty deposits in human aorta has been demonstrated. Also, the possible involvement of the interaction between sulfated polysaccharide and lipoprotein in the development of atherosclerosis has been suggested in view of the presence of both low density lipoproteins and glycosaminoglycans, as well as their complexes, in atherosclerotic aortas. Therefore interactions of sulfated polysaccharides with low density lipoproteins which serve as a vehicle for cholesterol and cholesterol ester and with zwitterionic phospholipids have been studied extensively by a number of workers to provide mechanisms. In this paper, the mechanism of the interaction of sulfated polysaccharides with low density lipoproteins and the mechanism of the interaction between sulfated polysaccharides and zwitterionic phospholipids are reviewed. The possibility of the occurence of these interactions in the body are also considered.

• Journal of Christian Education in Korea
• /
• v.70
• /
• pp.303-337
• /
• 2022

The purpose of this study is to realize Ontact PBL that can sufficiently contain interactive elements that can increase the perception of reality between professors and students in an environment without human contact. This is a class designed, developed, and operated ontact PBL for the first semester of 2021. As a result of diagnosing the realism of teaching and learning for students who took the class, the average teaching realism improved significantly by 0.95. This was found to be effective in improving the sense of realism in teaching as there were many related opinions in the reflective journal on students' classes. In addition, there was an effect on learning presence, and it was confirmed that emotional presence, which is a sub-element of learning presence, significantly improved by 0.7, social presence by 0.5, and cognitive presence by 0.6. Learning presence also confirmed the students' reflection on the class, and it was possible to judge that Ontact PBL was effective in improving the sense of presence.

• KIPS Transactions on Software and Data Engineering
• /
• v.6 no.12
• /
• pp.587-592
• /
• 2017

In this paper, we raise a question: what makes presence in artistic works. Presence has been defined as a physiological and emotional feeling which feels that he or she is immerged in a specific artworks when he/she is very interested in the artwork. We design and implemented an abstract media art "The Light" which uses the color, trace, and interactivity of light to measure quantitative presence. Frequency spectrum of light on specific object which we perceive makes color; Motion of light and its impact on object makes shape which perceived in our human visual system; Interactivity or perceived distance between object and observer makes intensity of perception. We experimented our images with subjective survey which includes PQS (presence questionnaire survey) and objective test using brain signals (EEG). From our interactive experimental moving images tested on 30 subject, we conclude that we can make more presence as we interact more with images. Photo-realistic images is just pass-by and it is transformed to abstract images, as we more focused on the images, and the essential components of the abstraction includes color, trace, and interaction with subjects.

• 한국생물공학회:학술대회논문집
• /
• 2005.04a
• /
• pp.17-17
• /
• 2005

In this presentation, we will discuss several recent achievements developed in my laboratory for microarray-based diagnosis of human genetic mutations including HNF-1 and BRCA1 mutations. To determine the presence of the genetic mutations in a human sample, we prepared allele-specific oligonucleotide chips from selected mutation sites and generated target probes using a tow-step method for Cy-3 DNA $samples^{1)}$ or in vitro transcription of promoter-tagged PCR products for Cy-3 RNA $samples^{2)}$. Hybridization of the target probes to the chips successfully identified all of the genotypes for the tested sites. For more reliable diagnosis, we also employed single base extension (SBE) reaction and zip-code microarray technique for our strategy. Particularly we developed an efficient PNA zip-code microarray for the detection of $HNF-1{\alpha}$ $mutations^{3)}$. Using multiplex SBE reactions and zip-code strategy, we were able to correctly diagnose several mutation sites in exon 2 of $HNF-1{\alpha}$ with a wild-type and mutant including a MODY3 patient. These works represent successful applications of DNA microarray technology for the diagnosis of human genetic mutations.

• Journal of the Korean Home Economics Association
• /
• v.47 no.10
• /
• pp.87-95
• /
• 2009

This study conducted a content analysis of the treatises published in JKHEA(Journal of the Korean Home Economics Association). In total, 2,136 articles published in JKHEA from 1995 to the first half of 2009 were reviewed. Articles were classified by subject matters, research methods, number of researchers, presence of research fund, language and number of reference. Although it is useful to employ content analysis in reviewing academic articles on human ecology in all journal publications, the sheer size of literature available makes this task nearly impossible. As such, we have chosen JKHEA as a popular representative journal on human ecology. This study presented the empirical results of research trends and other characteristics in JKHEA. As such, the results of this study presented a snapshot analysis of research on human ecology and future trends.

• YAKHAK HOEJI
• /
• v.30 no.1
• /
• pp.8-13
• /
• 1986

It has been assumed that nitrite, one of the precursor of N-nitrosamine, in human saliva must have been formed from salivary nitrate through the action of microorganism in the oral cavity. In this paper, we have tested the concentration of nitrite and nitrate in human saliva and the degrees of nitrate reduction by oral microflora and identified some bacteria which were able to reduce nitrate. The concentration of nitrite and nitrate was 1.7~9.5ppm and 9.0~28.5ppm respectively. The numbers of total bacteria and nitrate reducing bacteria in four korean human saliva sample were 15~63${\times}10^8$ CFU and 1.0~6.0${\times}10^8$ CFU and the main nitrate reducing bacteria were Streptococcus uberis which was presented in large quantities and showed remarkable reductive activity. Lastly, we knowed that N-dimethylnitrosamine was formed by the reaction between dimethylamine and nitrite in the presence of St. uberis in vitro.

• English & American cultural studies
• /
• v.18 no.3
• /
• pp.115-170
• /
• 2018

The objective of this paper is to explore Jim's itinerary journey in terms of both Girald's concept of triangular desire and Derrida's concept of event. According to the Girard's mimetic desire theory, human being's desire is not spontaneous like Romanticism thought, but mimetic to the mediator between the subject and the object. Thus there is no romantic desire understood as one's own desire except mimetic desire. In this regard, mimetic desire is compatible with the conception of Derrida's thinking of an event that is resistant to its absolute singularity. Because both mimetic desire and event cannot be defined by the fact of each spatio-temporal specificity, they can not be understood by a traditional metaphysics of presence. In this paper, by using Girard's concept of mimetic desire theory, I showcase why the tragic journey of Jim's telos as a mythic quest for his romantic ego(ipse) cannot help but face his death and by using deconstructive thinking of iterability, this paper analyzes why Jim's romantic ego imitated by the mimetic desire through a mediator cannot be encountered happily with his ipseity until his end. As a victim of triangluar desire, Jim's romantic ego is nothing but a notion of an ipsiety that has been defined in terms of presence central to metaphysics. This paper also makes an attempt to re-interpret some articles contaminated with post-colonial perspectives from Derridean views with deconstructive rigorous reading to those papers to uncover an essential ground of presence.

• Journal of English Language & Literature
• /
• v.55 no.5
• /
• pp.821-841
• /
• 2009

This paper explores the ways to reshape humanistic values of the curriculum of the English department of Korean universities. The English curricula are usually composed of three fields of literary studies, general education, and English proficiency, whose conventional humanistic values have been currently dwindling. As for literary studies, teaching literature still hovers over the canonical works of past decades, not allowing students to access the canon with their own ideas and ending up with authoritative monologues. The general education field leans toward edited texts rather than authentic ones, which ignores a genuine path of communication between the author and its readers. Subjects for English proficiency such as "TOEIC" tend to be taught online with no teacher's presence for the nominal purpose of optimizing economic efficiency in teaching. All these testify to the attenuation of humanistic values in the curriculum, which motivates us to suggest some ways to reshape the values. Authoritative monologue in teaching literature can be shifted to the open-ended conversation by using role-play methods as well as accepting extra-canonical works into the curriculum. Authentic texts for general education prove to be preferred by students with the successful result of our experiment. Lastly, it is teacher's presence in the class that helps get higher achievement of "TOEIC" than some online classes. As suggested above, open-ended conversation, wider communication between author and readers, and human presence of the class will help reshape humanistic values in the English curriculum.

• Asian Pacific Journal of Cancer Prevention
• /
• v.13 no.2
• /
• pp.699-704
• /
• 2012

Natural products have been the target for cancer therapy for several years but there is still a dearth of information on potent compounds that may protect normal cells and selectively destroy cancerous cells. The present study was aimed to evaluate the cytotoxic potential of n-butanolic leaf extract of $Annona$ $muricata$ L. on WRL-68 (normal human hepatic cells), MDA-MB-435S (human breast carcinoma cells) and HaCaT (human immortalized keratinocyte cells) lines by XTT assay. Prior to cytotoxicity testing, the extract was subjected to phytochemical screening for detecting the presence of compounds with therapeutic potential. Their relative antioxidant properties were evaluated using the reducing power and $DPPH^*$radical scavenging assay. Since most of the observed chemo-preventive potential invariably correlated with the amount of total phenolics present in the extract, their levels were quantified and identified by HPLC analysis. Correlation studies indicated a strong and significant (P<0.05) positive correlation of phenolic compounds with free radical scavenging potential. The results revealed that the extract was moderately cytotoxic to normal cells with a mean IC50 value of 52.4 ${\mu}g$ when compared with those obtained for cancerous cells (IC50 values of 29.2 ${\mu}g$ for MDA-MB-435S and 30.1 ${\mu}g$ for HaCaT respectively). The study confirms the presence of therapeutically active antineoplastic compounds in the n-butanolic leaf extract of $Annona$ $muricata$. Isolation of the active metabolites from the extract is in prospect.