• Journal of Korean Medical classics
• /
• v.29 no.2
• /
• pp.135-150
• /
• 2016

Objectives : KangHaiChengZhiLun (亢害承制論; If Excess Brings Harm, Lifing Qi (承氣) Restrains) was originally a theory that explained how the realms of nature remain in harmony and equilibrium. It later became an important theory for clinical trials of Traditional Chinese Medicine, explaining the physiological and pathological mechanism. Methods : The researcher considered all the annotations and the original text of SuWen(素問), LiuWeiZhiDaLun(六微旨大論) and theories of medical practitioners who applied KangHaiChengZhiLun(亢害承制論) to their clinical trials. Results & Conclusions : Wangbing (王氷) went with a theory that phenomena of Lifting Qi (承氣) take place in the realms of nature when Qi (氣) flourishes. In XinJiaoZheng(新校正), he wrote about two theories: one was that Six Kinds of Natural Factors (六氣) first work as the main Qi (本氣) but later bring about Lifting Qi. (終見下承之氣說); the other was that excessive Stagnation Qi (鬱氣) can be exploded and invite another accompanying Qi, Lifting Qi. (甚者兼其下承之氣說) Liuwansu (劉完素) had a theory that if Six Kinds of Natural Factors go disproportionately excessive, it becomes accompanied by imaginary Qi (假象) that conquers self. (反兼勝己之化說) $Wangl{\ddot{u}}$(王履) maintained that Lifting Qi usually works as a means to prevent Six Kinds of Natural Factors (六氣) from becoming rampant; but when Six Kinds of Natural Factors become overly excessive, Lifting Qi restrains them in order to maintain equilibrium. (防之與克勝說) Yutuan explained that since Excessive Qi (亢氣) does damage to the mother of Lifting Qi, Lifting Qi restrains Excessive Qi to protect Original Qi (元氣), its mother. (護救承者之元氣說) Gongtingxian was in favor of two theories: one argued that causes and symptoms of a disease differ from each other. (體用不同說); the other said that diseases are naturally cured if the patient finds out the time when Lifting Qi gains strength. (得承之時自愈說) Mashi (馬蒔) had a theory that Lifting Qi is generated when Six Kinds of Natural Factors are prosperous and reveals itself when its season comes. (極則生承氣 至本位著說) Zhangjiebin (張介賓) asserted that when Six Kinds of Natural Factors are thriving, Lifting Qi, as a restraining force, is generated to disperse the thriving natural factors and leads to a new one. (前之退而後之進說) Zhangqi (張琦)'s argument was that if Lifting Qi restrains the main Qi, a son of the main Qi is generated and every four season goes in harmony. (承氣制則生化說) Hemengyao (何夢瑤) had an argument that a son of the restrained Qi succeeds to its father and later achieves equilibrium by restraining Excessive Qi. (被克承父 制之平衡說).

• Journal of Korea Water Resources Association
• /
• v.32 no.1
• /
• pp.71-81
• /
• 1999

The objective of this study is to develop a model which can design an optimal pipe network system of least cost while satisfying all the design constraints including hydraulic constraints using a genetic algorithm technique. Hydraulic constraints interfaced with the simulation program(KYPIPE) checked feasible solution region. Genetic algorithm(GA) technique is a relatively new optimization technique. The GA is known as a very powerful search and optimization technique especially when solving nonlinear programming problems. The model developed in this study selects optimal pipe diameters in the form of commercial discrete sizes using the pipe diameters and the pumping powers as decision variables. The model not only determines the optimal diameters and pumping powers of pipe network system but also satisfies the discharge and pressure requirements at demanding nodes. The model has been applied to an imaginary and an existing pipe network systems. One system is adopted from journal papers which has been used as an example network by many other researchers. Comparison of the results shows compatibility of the model developed in this study. The model is also applied to a system in Goyang city in order to check the model applicability to finding of optimal pumping powers. It has been found that the developed model can be successfully applied to optimal design of pipe network systems in a relatively simple manner.

• Journal of the Korean Chemical Society
• /
• v.30 no.3
• /
• pp.273-281
• /
• 1986

This study is focused on the correct measurement of the equations for the determination of the impedance parameters-the differential capacity of the double layer $C_d$, solution resistance $R_Q$, transfer resitance $R_i$, and adsorption pseudcapacity $C_{\phi}$/ The application of only an imaginary part of complex function of ${\omega}$ at the sinusoidal steady state indicates the following equations of total impedance: at low frequency $|Z_{LF}|=1/{\omega}_1\;C_{\phi}\;{\sqrt{1+{{\omega}_1}^2/{\omega}^2}$, at high frequency $|Z_{HF}|={\omega}_2/({\omega}_1{\omega}_3C{\phi})({\omega}^2+{{\omega}_2}^2)\;{\sqrt{{({\omega}^2+{\omega}_2{\omega}_3)}^2+{({\omega}_2{\omega}-{\omega_3{\omega})^2}}$. The values of the total impedance of cell, phase angle, and cell current that are necessary for the calculations of impedance parameters were experimentally measured from 200 to 6000Hz for the following supporting electrolytes, 0.5M $Na_2SO_4$, 1M NaCl, 19.373% sea water, 1M HCl, 1M $KNO_3$ and for $10^{-2}M$ KI and 60mM DBNA (Di-iso-Butylnitrosoamine) in these supporting electrolytes. The derived equations in this study shows that the values of impedance parameters of $C_d,\;C_{\phi},\;R_i\;and\;R_Q\;are\;15{\sim}40\;{\mu}F/cm^2,\;162{\sim}758\;{\mu}F/cm^2\;11.5{\sim}57.6\;ohm{\cdot}cm^2\;and\;0.5{\times}10^{-2}{\sim}4.1{\times}10^{-2}\;ohm{\cdot}cm^2$ respectively.

• The korean journal of orthodontics
• /
• v.28 no.5 s.70
• /
• pp.731-740
• /
• 1998

In the previous studies about prescription of preadjusted appliance, occlusal plane was used as a reference plane for crwon angulation (tip) measurement. But this reference plane is not parallel to the line connecting the facial axis points at which the centers of brackets are positioned (Andrews' plane), due to the curve of Spee. Therefore, we developed a new reference plane unaffected by the curve of Sun and more parallel to the Andrews' plane. It is an imaginary line connecting mesial and distal marginal ridges of each posterior tooth, and we named it 'marginal ridge plane'. In this study, crown angulations of posterior teeth of 29 normal occlusion samples were measured and measurements from both reference planes were compared. Crown angulation measurements measured from occlusal plane were different from crown angulation measurements from marginal ridge plane in the upper and lower 2nd molars (p<0.01), md 1st premolars (p<0.05). These results were analyzed as the crown angulation measurements from occlusal plane were affected by the curve of Spee. Crown angulations should be varied according to the amount of curve of Spee to maintain the continuity of marginal ridges. To solve this problem, determining bracket angulation as the bracket slot is parallel to the marginal ridge plane of each posterior teeth is recommended.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
• /
• v.17 no.2
• /
• pp.245-261
• /
• 2019

Radioactive contaminant from a nuclear facility moves to the ecosystem by run-off or groundwater flow. Among the two mechanisms, contaminant plume through a river can be easily detected through a surface water monitoring system, but radioactive contaminant transport in groundwater is difficult to monitor because of lack of information on flow path. To understand the contaminant flow in groundwater, understanding of the geo-environment is needed. We suggest a method to decide on monitoring location and points around an imaginary nuclear facility by using the results of site characterization in the study area. To decide the location of a monitoring well, groundwater flow modeling around the study area was conducted. The results show that, taking account of groundwater flow direction, the monitoring well should be located at the downstream area. Also, monitoring sections in the monitoring well were selected, points at which groundwater moves fast through the flow path. The method suggested in the study will be widely used to detect potential groundwater contamination in the field of oil storage caverns, pollution by agricultural use, as well as nuclear use facilities including nuclear power plants.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.24 no.1
• /
• pp.90-95
• /
• 2014

The researchs using brain-computer interface, the new interface system which connect human to macine, have been maded to implement the user-assistance devices for control of wheelchairs or input the characters. In recent researches, there are several trials to implement the speech recognitions system based on the brain wave and attempt to silent communication. In this paper, we studied how to extract features of vowel based on international phonetic alphabet (IPA), as a foundation step for implementing of speech recognition system based on electroencephalogram (EEG). We conducted the 2 step experiments with three healthy male subjects, and first step was speaking imagery with single vowel and second step was imagery with successive two vowels. We selected 32 channels, which include frontal lobe related to thinking and temporal lobe related to speech function, among acquired 64 channels. Eigen value of the signal was used for feature vector and support vector machine (SVM) was used for classification. As a result of first step, we should use over than 10th order of feature vector to analyze the EEG signal of speech and if we used 11th order feature vector, the highest average classification rate was 95.63 % in classification between /a/ and /o/, the lowest average classification rate was 86.85 % with /a/ and /u/. In the second step of the experiments, we studied the difference of speech imaginary signals between single and successive two vowels.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.51 no.11
• /
• pp.3-10
• /
• 2014

Direct conversion receiver(DCR) gets noticed for integration and cost reduction of wireless communication systems instead of the heterodyne receiver which uses complex filter. But DCR has several factors in performance degradation. One of them is I/Q imbalance phenomenon, that is amplitude and phase mismatch between real and imaginary part of receiver. Accordingly, researches are being carried to improve the I/Q imbalance problem. However, the tendency of the broaden bandwidth of communication systems, low pass filter(LPF) mismatch problem affects severely in I/Q mismatch phenomenon at the DCR. To study this problem, we generated 10MHz broadband signal and shifted it ${\pm}8MHz$ from the center frequency. The signal is affected by LPF mismatch and it appears as frequency selective distortion. Thus, LPF mismatch model is added to I/Q imbalance model which conventionally dealt with amplitude and phase mismatches. In addition, we proposed the compensation method for each factors of mismatch. As the simulation results, the proposed I/Q mismatch compensator resolves the frequency selective distortion which occurred by the existing LPF mismatch.

• International Journal of Highway Engineering
• /
• v.11 no.4
• /
• pp.59-68
• /
• 2009

Torsional behavior of concrete pavement slabs due to temperature and moisture effects is constrained by self weight and friction etc, and causes stress as the result. The stress due to humidity variation in the slab is difficult to calculate while that due to temperature variation can easily be calculated by a commercial structural analysis program. Thus, the slab behavior can be predicted more accurately if the humidity effect is converted to equivalent temperature and is used as an input of structural analysis. In this study, a concrete pavement slab was constructed and strains of the slab due to environmental loadings were measured for long-term period. Thermal strains were subtracted from the measured strains by using thermal expansion coefficient of the concrete measured in a laboratory. Shrinkage strains, the remained strains, was supposed as additional thermal strains to calculate imaginary temperature with equivalent effect of the shrinkage by dividing the shrinkage with the thermal expansion coefficient. An existing shrinkage model was modified by considering the self weight and friction to be used in another model which can convert differential shrinkage between top and bottom of the slab to equivalent temperature difference. Addition research efforts on tensile stress reduction according to steady increase in the compressive strains are warranted for more accurate stress calculation.

• Review of Culture and Economy
• /
• v.20 no.1
• /
• pp.21-50
• /
• 2017

The rise of Hallyu (Korean Wave) has generated a treasury of historiographic and cultural inquiries into the phenomenal success of South Korea's media entertainment industry. Whereas the majority of such studies focus on TV dramas and popular music, there is a medium, or rather a hybrid sub-genre within the medium category of short films, that must be reexamined and thus appreciated as the archetypal predecessor of popular Hallyu contents: music videos. The rapidly changing social, political, and economic climate in the mid- to late 1990s called for content that would grasp the attention of a younger, increasingly mobile population with diversified interests and routines that no longer guaranteed fixed-time viewership. Meanwhile, the advent of cable TV channels and high-speed internet service ensured greater temporal and infrastructural accessibility. The media entertainment industry's response to the new opportunities and challenges arising from these sudden growths in the scale, range, connectivity, and mobility of consumer demographics was synergetic cross-sector collaboration in the form of dramatized blockbuster music videos, which combined two popular and lucrative genres: trendy dramas and ballad music. In this essay, by relocating Hallyu's archetypal medium/genre, I claim that increasing upward and sideways mobility across sectors not only inspired new production but also reconfigured the very concept, form, and impact of media-driven cultural imaginary in South Korea.

• KIPS Transactions on Software and Data Engineering
• /
• v.2 no.7
• /
• pp.479-486
• /
• 2013

The data model that can be said as skeleton of the information system constitutes important 2 axles in the information system together with the process model. There is entity, properties, relation as key factors of the data model, and entity is the most fundamental factor in the data model, and thus total data model becomes vague if not deriving entity definitely. This study dealt with entity deduction only. Deducing methods of existing entity depended on experiences, task knowledge of designers and clear procedures were not suggested, so there were many difficulties in approaching them from beginners or unskilled persons. For giving helps in solving the problem, this study proposes entity- deducing procedures based on tasks that can derive entity with a systematic process at previously derived target businesses through suggested methods from advancing researches. And the study enabled proposing procedures on imaginary tasks to be applied, objecting to undergraduates who had not experiences on the data modeling, and then verified suggesting process through a similarity checking between best answers with deduced entity by students after taking impossible points of comparing existing methods with suggesting process into consideration. By doing so, deducing entity closely to the best answer was confirmed accordingly. Therefore, a fact could be confirmed that beginners were able to deduce entity closely to the best answer even if letting beginners who had not experiences on the data modeling be applied to unfamiliar tasks. Regarding researches on properties and relation deduction besides entity, this study leaves them to next time.