• Journal of Korean Medical classics
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• v.33 no.4
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• pp.21-32
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• 2020

Objectives : Pulse descriptions in Korean Medical texts are comprised of combinations of pulse terminology, where various combinations of pulse terminology are used to describe disease symptoms. For Korean Medical doctors and professionals, however, it is impossible to identify the entirety of pulse description combinations, and their understanding is mostly limited to those learned from classical texts studied individually. Methods :This research was carried out by using Access of Microsoft Office 365 in Windows 10 of Microsoft. Pulse descriptions were extracted from the text, 『Euijongsonik』. In the final stages, the automatically extracted list of pulse descriptions was refined through [excluded terminology of pulse description]. Results : The PC environment of this research was Intel Core i7-1065G7 CPU 1.30GHz, with 8GB of RAM and a Windows 10 64bit operation system. Out of 6,115 verses 6,497 descriptions were primarily extracted, and after a refinement process, the final list contained 5,507 pulse descriptions. Conclusions : Based on the assumption that classical texts are available in data form to be processed by programs, current research methodology demonstrated that it was more efficient in regards to time and man power to create a pulse description database compared to when the researcher manually created one.

• Journal of Convergence for Information Technology
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• v.10 no.12
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• pp.31-38
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• 2020

Radar signal identification of electronic warfare is a technology that recognizes the pulse repetition interval (PRI) from a set of pulse description words (PDWs) generated by the signal receiver. Conventionally batch processing is widely used in which a number of PDWs are collected as a unit and identifies PRI from the batch. In this paper, we propose a feature extraction algorithm based on the streaming process. This technique does not wait to form a batch. Whenever a PDW(Pulse Description Word) is generated from the signal receiver, the streaming process tries to form a cluster of PDWs, and makes the DTOA (Difference of Time of Arrival) histogram, finds out the frame PRI based on the concentration ratio, and decides the number of stagger stages. Experiments proved that the proposed algorithm derives stable recognition results as the cluster size increases.

• Cement Symposium
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• no.19
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• pp.14-17
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• 1991

The electrostatic precipitator is known to the cement industry as the preferred dedusting equipment for the main dust emission sources. To understand the function better, a short description of the theory of precipitation is presented, with the factors in

• Journal of Korean Medical classics
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• v.33 no.4
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• pp.83-105
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• 2020

Objectives : This paper aims to examine the system, principle, and fundamentals of the great principle of pulse diagnosis in the 『Nanjing』. Methods : The system, principle, and fundamentals of pulse diagnosis in the 『Nanjing』 were examined within the book's description framework and logical structure in light of its relationship to the 『Huangdineijing』. Previous studies that follow pulse diagnosis of 『Nanjing』 and 『Wangshuhe Maijue』 were referenced. Results & Conclusions : The structure of pulse diagnosis in the 『Nanjing』 is systematically organized under the principle of the three positions and nine indicators as the great principle to which the yinyang and five viscera pulse theories are included. The great principle of the three positions and nine indicators is consisted of a system that allows for a multiple and comprehensive interpretation wherein the theories of yinyang and five elements are interweaved within the pulse diagnosis system, which is comprised of a great principle and particular principles. The theory follows that of the three yin three yang theory of the five circuits and six qi, its principles manifesting as the three positions and nine indicators and integration of pulse and symptoms.

• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.7
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• pp.85-91
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• 2016

Typically, radar systems change the pulse repetition interval of their modulated signal in order to avoid detection. On the other hand the radar-signal detection system tries to detect the modulation pattern. The histogram or auto-correlation methods are usually used to detect the PRI pattern of the radar signal. However these methods tend to lost the sequence information of the PRI pulses. This paper proposes a PRI-sequence detection algorithm based on the finite-state machine that could detect not only the PRI pattern but also their sequence.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.10
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• pp.137-144
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• 2014

The Electronic Support System collects and analyzes the received radar signals in order to cope with the electronic attack in real-time. The radar-pulse clustering system classifies the radar signals that are considered to be emitted by a single source. This paper proposed a radar-pulse clustering algorithm based on four kinds of features: the direction, frequency, pulse width, and the difference of arrival time between two successive pulses. The experiment results show that the proposing algorithm could trace the moving emitter and classify the timely separated signals into different classes.

• Journal of the Optical Society of Korea
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• v.16 no.4
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• pp.396-400
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• 2012

We introduce a combined technique and the mathematical description for distance measurements using a femtosecond pulse laser in a long range and a fine resolution. For distance measurements, the maximum measurable range can be extended by combining measurement results from several different methods while requiring relationships between the different measurement uncertainties and unambiguity ranges. This paper briefly explains why the uncertainty of a rough measurement technique (RMT) should be, at least, smaller than the half unambiguity range of a fine measurement technique (FMT) in order to combine a FMT with a RMT. Further discussions about the total measurement range, resolution, and uncertainty for various optical measurement techniques are also discussed.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• v.y2005m4
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• pp.194-197
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• 2005

Pulse-mode performance evaluation is made for a set of monopropellant hydrazine thrusters producing $0.95 lb_{f}$ of nominal steady-state thrust at an inlet pressure of 350 psia. With a brief description on the hot-firing test matrix, a typical data obtained from pulse-mode firing is given directly showing the variational behavior of propellant supply pressure, vacuum condition, and thrust, in addition to the thermal response of the thruster. The performance features are successfully compared to the reference criteria of 1-lbf standard monopropellant rocket engine.

• Journal of Korean Medical classics
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• v.27 no.4
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• pp.101-119
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• 2014

Objectives : In Dong-uibogam, Heo Jun used the concept of 'Physical symptom(形證)' that had not used frequently in practical description of pathological condition. Especially, He used the terminology, 'Physical symptom(形證)' as a title in the Han(寒) Chapter that described Sanghan(傷寒). Methods : It has been done to analyse verses that include the concept of 'Physical symptom(形證)' in Dong-uibogam. And, to find the context including the terminology diachronically. Results : Diachronically, 'physical symptom' and 'pulse sign' had been considered as bilateral factors of disease, and Heo jun cognized the concept of 'Physical symptom' in these means in Dong-uibogam. Conclusions : Introducing the concept of 'Physical symptom' is an important decision of Heo Jun, it can express the purpose of an observation to objective symptoms.

• Journal of Biomedical Engineering Research
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• v.31 no.4
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• pp.328-334
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• 2010

Over the past few years, a considerable number of methods have been proposed and applied for the classification of photoplethysmography (PPG). Most of the previous studies, however, focused on the qualitative description of the pulse type according to specific disease and thus provided ambiguous criteria to interpreters. In order to screen out this problem, we present a quantitative method for the pulse type classification including the second derivative of photoplethysmography (SDPTG). In the PPG signal, we have classified the signal as 4 types using the position and the presence of the dicrotic wave. In addition, we have categorized the SDPTG signal as 7 types using the position and the presence of "c" and "d" wave and the sign of "c" wave. In order to check the efficacy of the proposed pulse type classification rule, we collected pulse signals from 155 subjects with different ages and sex. From the correlation analysis, Class 1(p<0.01) and Class 2(p<0.01) in the PPG signal are significantly correlated with ages. In a similar manner Class A(p<0.01), Class C(p<0.05), Class D(p<0.01), and Class F(p<0.01) in the SDPTG signal are considerably correlated with the ages. From these observations, and some earlier ones [4], [5], we can conclude that since the newly proposed method has objectivity and clarity in pulse type classification, this method can be used as an alternative of previous classification rules including similar age-related characteristics.