이산화탄소 저감형 시멘트 함량에 따른 경량기포 콘크리트의 물성평가

임동혁,이원기,Im, Donghyeok,Lee, Won-Ki 한국환경과학회 2020 한국환경과학회지 Vol.29 No.6

To improve the initial strength and stability of lightweight-foamed concrete, which shows suitable sound absorption and insulation characteristics, the effect of CO₂-reduced cement on the properties of the concrete was investigated. Various mixing ratios were applied by substituting a certain amount of slag and Calcium Sulfo Aluminate (CSA) in CO₂-reduced Ordinary Portland Cement (OPC) and the physical properties of the samples were examined using the Korean Standard. The kiln temperatures of the CSA were 100-200℃ ; these values are lower than those of OPC and can lead to energy saving. In addition, the low limestone content reduces greenhouse gas emissions by 20 %. Adding a small amount of CSA in OPC content activates Ca-Al-H₂-based hydrates, and the initial compressive strength of the concrete is improved. As the CSA content increased, the thermal conductivity of the concrete decreased by up to 8% compared to plain concrete, thus indicating an improvement in its insulation. Therefore, the settlement stability was improved as the addition of CSA shortened the setting time.

토양미생물을 이용한 하, 폐수의 무취 고도처리공정의 개발

임동혁 환경보전협회 2002 환경정보 Vol.25 No.7

A Digital Readout IC with Digital Offset Canceller for Capacitive Sensors

임동혁,이상윤,최우석,박전은,정덕균 대한전자공학회 2012 Journal of semiconductor technology and science Vol.12 No.3

A digital readout IC for capacitive sensors is presented. Digital capacitance readout circuits suffer from static capacitance of sensors, especially single-ended sensors, and require large passive elements to cancel such DC offset signal. For this reason, to maximize a dynamic range with a small die area, the proposed circuit features digital filters having a coarse and fine compensation steps. Moreover, by employing switched-capacitor circuit for the front-end, correlated double sampling (CDS)technique can be adopted to minimize low-frequency device noise. The proposed circuit targeted 8-kHz signal bandwidth and oversampling ratio (OSR) of 64,thus a 3rd-order Σ modulator operating at 1 MHz was used for pulse-density-modulated (PDM) output. The proposed IC was designed in a 0.18-μm CMOS mixed-mode process, and occupied 0.86 × 1.33 mm2. The measurement results shows suppressed DC power under about -30 dBFS with minimized device flicker noise.

한국 성인의 알레르기 질환 유병률: 국민건강영양조사 2010-2012

임동혁,양영수,최혜랑,최성준,남현주,한규진,홍석찬,김진국,조재훈 대한이비인후과학회 2017 대한이비인후과학회지 두경부외과학 Vol.60 No.10

Background and Objectives In this study, we evaluated differences in the prevalence of allergic rhinitis, asthma, atopic dermatitis and specific immunoglobuline E (IgE) value for some respiratory antigens in Korean adults. Subjects and Method The study was conducted using data from the 5th National Health and Nutrition Survey (2010-2012). All subjects who were aged 19 years or older completed questionnaires on asthma, atopic dermatitis and allergic rhinitis. The subjects were first divided into male and female, and then into age groups of 19-29, 30-39, 40-49, 50-59, 60-69, ≥70 each. The lifetime and current prevalence rates for allergic rhinitis, asthma, and atopic dermatitis were calculated for each age group. The total and specific IgE level for Dermatophagoides farinae (DF), cockroach, and dog dander were also calculated. Results Final participants of 17542 were analyzed for the prevalence rate among the total of 25534 participants. The mean IgE level was calculated from 2028 subjects from the final participants. In asthma, the lifetime prevalence and current prevalence increased with age, but decreased with atopic dermatitis and allergic rhinitis. Total IgE level increased with age, but IgE level of DF reached its peak at 20-29 years, and then decreased rapidly thereafter. There was no clear trend for cockroach and dog dander. Conclusion The prevalence of allergic diseases in adults varies widely by age group. Asthma has a low prevalence after age 20 and gradually increases after age 50. Atopic dermatitis and allergic rhinitis are the most prevalent in their 20s and gradually decrease thereafter. Korean J Otorhinolaryngol-Head Neck Surg 2017;60(10):504-11

Do Eosinophilic Polyps Act as a Reliable Predictor of Olfactory Dysfunction and Postoperative Recovery in Chronic Rhinosinusitis?

임동혁,양영수,최혜랑,한규진,홍석찬,조재훈,김진국 대한이비인후과학회 2018 대한이비인후과학회지 두경부외과학 Vol.61 No.6

Background and Objectives The purpose of this study was 1) to assess differences in categoriesof olfactory dysfunction according to the pathological classification of chronic rhinosinusitiswith nasal polyp (CRSwNP) patients; 2) to identify the degree of olfaction recoveryafter endoscopic sinus surgery (ESS); and 3) to identify the factors that predict the changes inolfactory status. Subjects and Method The sample of the study consisted of patients with CRSwNP whounderwent ESS with biopsy from January 2012 to September 2014. Seventy five patients wereclassified into eosinophilic CRS (ECRS) and non-ECRS groups. During an approximately fivemonthfollow-up, the Korean Version of Sniffin’ Sticks test II (KVSS II) was conducted oneach patient to examine the difference between the preoperative and postoperative states of olfactoryfunction. Results The ECRS group showed a statistical significant increase in the postoperativeKVSS II scores when compared to the preoperative scores, while the non-ECRS group did notshow any statistically significant change. For the anosmia category by KVSS II, the ECRSgroup showed significantly improved olfactory function test scores for the threshold, discrimination,and identification tests. Conclusion ECRS and preoperative olfactory function status (anosmia) could be predictablefactors of postoperative olfactory function.

습구흑구온도(WBGT) 측정을 통한 충북권 내 농작업 환경 평가

임동혁,김용대,김헌 대한직업환경의학회 2015 대한직업환경의학회 학술대회 논문집 Vol.2015 No.11

肺梗塞症을 同伴한 肺血栓性 栓塞

林東爀 全南大醫大 1974 전남의대학술지 Vol.11 No.1

大學生 年令階層으로서의 靑年의 役割配分模型에 관한 社會學的 一考

任東爀 東亞大學校 學生指導硏究所 1972 學生硏究 Vol.3 No.-

大衆社會에 있어서의「疎外」問題에 관한 政治學的 硏究

任東爀 東亞大學校 1976 東亞論叢 Vol.13 No.1

This study started with the purpose of finding a clue of solving the alienation problem in mass society through a theoretical inquiry into the situation of alienation in politics. For this purpose, in the first place, why the alienation problem in the mass-society situation comes into being was quested out. Secondly, the definition of alienation, its categories, and its problemic characteristics were dealt with under the head of "alienation phenomena and anomie". Thirdly, alienation theories were categorized by 3 patterns-the realistic, idealistic, and Marxist-and the questions involved in each pattern were discussed. Lastly, this study has attempted to design a way of overcoming alienation in mas-society politics, concerned with humanism. The main points of the above problems are summarized as follows:- Indications of mass society were not only in a descriptive category caught as mechanization, grouping, technicalization, and emotionalization, but also in a morphological category as atomization and organization. Such a mass society is to be prescribed as a specific historical situation coming into being, conditioned by concentration and monoplization of capitals and highly developed technology. The mass-society situation has been transfiguring the independent autonomous civil man into the lonely average man lost of individuality. These atomized, isolated masses tend necessarily to be normaless, irregular, irrelative, anonymous, blind, furious, and irrational. Thus mass-behaviours are liable to be manipulated through the highly developed mass-media by political elites. Yet masses tend by nature to be indifferent to politics, but their latent irrational massive energies are likely to be horrible. Paradoxically the mass culture and the complicated, bureaucratized governmental mechanism accelerate such an apathetic tendency of masses. Here we have to notice the fact that under this situation of mass society the traditional democratic aparatuses are going to be in danger of cavitizing or superficializing. That is the very crisis of democracy. Such a crisis of massdemocracy has made us cognize the challenge of anti-democratic totalitarianism. But however democracy may be challenged by antagonistic forces, are and should be its ideological significance and valuableness forever. In this point of view, to make the mass-democracy an object of criticism has been stemming from percepting that the mass-society situation might make assurance of democratic values difficult. As by E. Fromm, the fact that the masses escaping from freedom are of much account refers to the case. This issue is related to the alienation of human beings. If we regard the concept of alienation as a state in which the creating or enjoying subject of any value for himself is laid in the distance from the value by making it objective, we may consider that Fromm's image of mass, Marx's figure of the workers alienated from their own labor, existentialists' statue of the moderns lost of humanity, all of these shows the human aspect of alienation, which is conditioned the mass-society situation based upon the highly progressed, mechanized industrial civilization. The inner foundation of such a perception of alienation lies in the moral. If so, it is more important to search for a way to overcome alienation phenomenon than to find and explain it. Its clue should be found out of humanism. In this context the study has recognized that our humanistic moral practices confronting ourselves with every social evil or contradiction out of our internal existence toward outer world is the only way to overcoming of alienation.

大衆社會에 있어서의 政治倫理에 관한 硏究

任東爀 東亞大學校 1976 東亞論叢 Vol.13 No.2

This study started with the purpose of finding a clue of the continuous progress of democracy by laying its new moral foundations through a theoretical inquiry into the mass-society situation and the realities of democracy under the situation. For this purposed in the first place, how a mass society came into being, what its structural characteristics are, and what problems the mass-society theories have, were in turn quested closely out. Secondly. the situational problems of politics in mass society were dealt with, focusing on the individual freedom and ideological conflicts. And thirdly the moral foundations for resolving the regarded problems to present to democratic progress were discussed. This is associated with political moralization, which was focused on 'alienation', 'political change', and 'humanism'. The main points of the above problems are summarized as follows: Indications of mass society were not only in a descriptive category caught as mechanization, grouping, technicalization, and emotionalization, but also in a morphological category as atomization and organization. The motivation of mass society was searched out of the socialization of production accompanied by industrial development. Such a socio-economic development based upon the socialization of production brings about the sweeping augmentation of propertyless population and the rapid progress of technology, and at the same time it leads to atomization and organization in the aspect of social form. From these social transformations. it follows that the traditional status-system has almost entirely been broken down. A kind of social levelization continues and promotes political equalization. Thus great importance was attached to the foundational becoming elements of mass society. In short, a mass society is to be prescribed as a specific historical situations coming into beig, conditioned by concentration and monopolization of capitals and highly developed technology. Such a society cheats continuously number-less masses and consequently the mass-like spreads throughout all the areas of the society. The mass-society situation has been transfiguring the independent autonomous civil man into the lonely average man lost of individuality. These atomized, isolated masses tend necessarily to be normaless, irregular, irrelative. anonymous, blind, furious, and irrational. Thus mass-behaviours are liable to be manipulated through the highly developed mass-media by political elites. Yet masses tend by nature to be indifferent to politics, but their latent irrational massive energies are likely to be horrible. Paradoxically the mass culture and the complicated. bureaucratized governmental mechanisms accelerate such an apathetic tendency of masses. Here one point was. however, especially noted that all the masses are not always same. Most of them have a modern type of apathy. According to political scientists. it is characterized by ostensible apathy. On the occasion that any decisive problem may converge their divergent political objectives, their political interests which have criticisms must stem from percepting the problem that the class-society situation discussed above might make assurance of democratic values difficult. As by E.Fromm, a well-known theorist of mass society, the fact that the masses escaping from freedom are of much account refers to the case. This issue is related to the alienation of human being. If we regard the concept of alienation as a state in which the creating or enjoying subject of any value for himself is laid in the distance from the value by making it objective, we may consider that Fromm's image of mass. Marx's figure of the workers alienated from their own labor. existentialists' statue of the moderns lost of humanity, all of these shows the human aspect of alienation, which is conditioned the mass-so-ciety situation based upon the highly progressed, mechanized industrial civilization. The inner foundation of such a perception of alienation lies in the moral. If so, it is more important to search for a way to overcoming of alienation than to find and explain it. Its clue should be found out of humanism. In this context the sudy has recognized that our humanistic moral practices confronting ourselves with every social evil or contradiction out of our internal existence toward outer world is the only way to overcoming of alienation. At the same time it has been argued such a practical attitude leads, as a logical consequence, to orientation of socio-political change. Hut, however may the logic of change be valid on the ethical basis like this, there remains one important problem to be never neglected, that is, correspondence of means to ends. If any theory of socio-political change assets an immoral means of naked violence for the alledged good ends of change, we can and should never agree on it. This is the reason why the totalitarian theories of change should be rejected. In this context the study could make the three points clear with review of changing history of democracy: (1) that the highest valuableness of democracy itself can be never denied, (2) that it is for the reason why democratic ideas conform to the moral value of mankind, and (3) that the established institutional aparatuses of democracy have to be oriented to continuously innovational change and such orientation must be either available or profitable for democracy. Lastly, as to moralization of politics, the study has refered again to the social morality under the mass-society situation because it is the fundamental morality for politics. As generaly known, morality also alters together with historic change . The historic conversion of a civil society into a mass society tends to make the ground morality of civil men aiter into the corrupt morality of mass men. Civil men had unificative, homogeneous, productive, and rational moralities . On the contrary, masses have divergent, hererogenous, consuming, and irrational moralities. As the result this ethical anarchy is liable to produce a paisy of the mediatory function of ethic in the politics. Consequently, that just here is a moral crises of mass-democracy can we percept. As long as politics is grasped as power phenomenon, the problem of political morality is concerned with the moralization of power. This problem is of legitmacy. As generally known, democracy is by nature the principle of legitimacy. In this sense democracy must be revived by the humanistic awakenings and practice of mankind and it would be live forever.