• Journal of the Institute of Electronics Engineers of Korea SD
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• v.49 no.3
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• pp.8-14
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• 2012

In this paper, a low-area FFT structure using $Radix-4^2$ algorithm is proposed. The large point FFT structure consists of cascade connection of the many stages. In implementation of large point FFT using $Radix-4^2$ algorithm, stages which number of different coefficients are only 3 appear in every 2 stages. For example, in the 4096-point FFT, the stages that number of different coefficients are 3 appear in stage 1, 3, and 5 among 6 stages. Multiplication block area of these 3 stages can be reduced using CSD(Canonic Signed Digit) and common sub-expression sharing techniques. Using the proposed structure, the 256-point FFT is implemented with the Verilog-HDL coding and synthesized by $1.971mm^2$ cell area in tsmc $0.18{\mu}m$CMOS library. This result shows 23% cell area reduction compared with the conventional structure.

• The Journal of Korean Medicine
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• v.27 no.3 s.67
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• pp.63-76
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• 2006

Objective: These studies were undertaken to evaluate the effects of the different administration duration of Morindae Radix extract solution on spermatogenic abilities such as concentration, motility and morphological normality of sperm from the testes and the activities of sperm hyaluronidase. Materials and Method: We used 8-week-old ICR mice and administered 0.3mg/g extract solution of Morindae Radix once a day for 30, 60, 90 and 120 days. The control group was administered normal saline in the same way and duration. We examined the number of total, motile and normal sperm from the cauda epididymis. We also compared the testicular tissue, especially seminiferous tubules, between the control and treated groups by histochemical methods. Finally, we observed the difference of sperm hyaluronidase activities between the control and treated groups. Results: Significant administration duration-dependent differences were observed in the concentration of total sperm, motility and normality of spermatozoa of the Morindae Radix extract solution administered groups compared to the control group. In the histological analysis of the testicular tissues, the enlargement of testicular lobe diameter and apparent vasculogenesis between testicular lobes were observed in the Morindae Radix extract solution administered groups compared to the control group. Also, the activity of hyaluronidase was significantly increased in the Morindae Radix extract solution administered groups compared to the control group. Conclusions: This study shows that the beneficial effect of Morindae Radix extract solution on the concentration, motility and morphology of sperm, the testicular tissues and the activities of sperm hyaluronidase increased the greater the duration the mice were administered it. We suggest that Morindae Radix may be useful for the treatment of male sexual dysfunction and infertility.

• Herbal Formula Science
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• v.26 no.2
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• pp.129-145
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• 2018

Objectives : This report describes 70prescriptions related to the use of Radix Aconiti Lateralis Preparata mainly blended from Dongeuibogam. Methods : The following conclusions were drawn through investigations on the pre-scriptions that use Radix Aconiti Lateralis Preparata as a key component. Results : Prescriptions that Radix Aconiti Lateralis Preparata was taken as a monarch drug are utilized for 31 therapeutic purposes, for example, cold disease, stool disease, child disease. In particular, 17.3% of prescriptions appear in the chapter of cold. Prescriptions that utilize Radix Aconiti Lateralis Preparata as the main component are used in the treatment of cold, diarrhea and child disease, Bi syndrome due to pathogenic wind, cold and damp and they are also used for treating 55 different types of disease. Radix Aconiti Lateralis Preparata is used in pathogenic factors such as wind, cold and dampness and used in pathology related to the kidney and spleen and stomach system. The dosage of Radix Aconiti Lateralis Preparata is 2pun(about 0.75g) to 5don(about 18.8g), however 1don(about 3.75g)~1don 5pun(about 5.63g) has been taken the most for clinical application. Conclusions : Gangbutang and Ijungtang are the most useful base prescriptions which use the Radix Aconiti Lateralis Preparata as the main ingredient.

• Journal of Haehwa Medicine
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• v.15 no.2
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• pp.247-261
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• 2006

In oriental medicine, Rhei Radix et Rhizoma & Gardeniae Fructus are frequently used materials for anti-inflammatory effect especially urinary tract disease and for neuropsychosis. Bang-Yak-Hap-Pyun(方藥合編) is widely used for clinical herbal prescription book. In Bang-Yak-Hap-Pyun(방약합편), Rhei Radix et Rhizoma is used 0.8g~16g. and Gardeniae Fructus is used 1.2g~6g. The most important fact is that the prescriptions used Rhei Radix et Rhizoma & Gardeniae Fructus at the same time are 4(Yang-Gyuk-San, Pal-Jung-San, Sa-Chung-Hwan, Suk-Gyul-Myung-San. The ratio of Rhei Radix et Rhizoma & Gardeniae Fructus are 2:1, 1:1, 1:1, 1:2 ). The number of prescription Rhei Radix et Rhizoma & Gardeniae Fructus in Bang-Yak-Hap-Pyun is total 45. 1 in sang-tong(上統), 5 in jung-tong(中統), 39 in ha-tong(下統). The group of mostly used disease is about urinary tract. The ratio of Rhei Radix et Rhizoma in Bang-Yak-Hap-Pyun is 3.33%~57.14%. And the ratio of Gardeniae Fructus is 3.47%~98%. The mostly quoted medical literature what prescription included Rhei Radix et Rhizoma & Gardeniae Fructus in Bang-Yak-Hap-Pyun are Dong-Yi-Bo-Gam and Man-byung-hoe-chun.

• JSTS:Journal of Semiconductor Technology and Science
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• v.15 no.1
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• pp.77-84
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• 2015

This paper presents the design of a low-power, low area 256-radix 16-bit crossbar switch employing a 2D Hyper-X network topology. The Hyper-X crossbar switch realizes the high radix of 256 by hierarchically combining a set of 4-radix sub-switches and applies three modifications to the basic Hyper-X topology in order to mitigate the adverse scaling of power consumption and propagation delay with the increasing radix. For instance, by restricting the directions in which signals can be routed, by restricting the ports to which signals can be connected, and by replacing the column-wise routes with diagonal routes, the fanout of each circuit node can be substantially reduced from 256 to 4~8. The proposed 256-radix, 16-bit crossbar switch is designed in a 65 nm CMOS and occupies the total area of $0.93{\times}1.25mm^2$. The simulated worst-case delay and power dissipation are 641 ps and 13.01 W when operating at a 1.2 V supply and 1 GHz frequency. In comparison with the state-of-the-art designs, the proposed crossbar switch design achieves the best energy-delay efficiency of $2.203cycle/ns{\cdot}fJ{\cdot}{\lambda}2$.

• Journal of dental hygiene science
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• v.2 no.1
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• pp.31-38
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• 2002

This study was to investigate the antibacterial effect of 63 species herbal medicine extracts on S. mutans growth by paper disc method and then examined the effects of S. mutans growth by some selected herbal medicines. Antibacterial effect of 63 species medicinal herb extracts on S. mutans was superior to Lycopi herba, Scutellariae radix in regular order and antibacterial activity(20 mg/ml concentration) through paper disc method were measured 6.3 mm and 3.5 mm, respectively. The growth of S. mutans in control medium was the highest at 8hrs, while that of medicinal herbs extract added-medium(2 mg/ml) was at 16 hrs. The pH values of the control media and media supplemented with Lycopi herba and Scutellariae radix extract were 5.08, 5.80, and 5.74 at 8 hrs, respectively. In the change of total carbohydrate of the control media and supplemented with Lycopi herba and Scutellariae radix extract were 0.81 mg/ml, 1.70 mg/ml and 1.84 mg/ml at 8 hrs, respectively. In the change of proteins of the control media and supplemented with Lycopi herba and Scutellariae radix extract were 8.39 mg/ml, 9.52 mg/ml and 9.28 mg/ml at 8 hrs, respectively. The polysaccharide contents of the control media and supplemented with Lycopi herba and Scutellariae radix extract were 300 mg/100 ml, 200 mg/100 ml and 220 mg/100 ml at 8hrs, respectively.

• Journal of Advanced Navigation Technology
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• v.21 no.6
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• pp.659-665
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• 2017

In this paper, a low complexity fast Fourier transform(FFT) processor is proposed for multiple input multiple output(MIMO) systems. The IEEE 802.11ac standard has been adopted along with the demand for a system capable of high channel capacity and Gbps transmission in order to utilize various multimedia services using a wireless LAN. The proposed scalable FFT processor can support the variable length of 64, 128, 256, and 512 for 8x8 antenna configuration as specified in IEEE 802.11ac standard with MIMO-OFDM scheme. By reducing the required number of non-trivial multipliers with mixed-radix(MR) and multipath delay commutator(MDC) architecture, the complexity of the proposed FFT processor was dramatically decreased. Implementation results show that the proposed FFT processor can reduced the logic gate count by 50%, compared with the radix-2 SDF FFT processor. Also, compared with the 8-channel MR-2/2/2/4/2/4/2 MDC processor and 8-channel MR-2/2/2/8/8 MDC processor, it is shown that the gate count is reduced by 18% and 17% respectively.

• Journal of Korean Medicine Rehabilitation
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• v.28 no.3
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• pp.39-53
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• 2018

Objectives The aim of this study was to analyze the herbal prescription and composition of the leading experimental studies of herbal medicine extract in arthritis model and to analyze the way of setting model and the way of validating effect of the leading experimental studies of herbal medicine extract in arthritis model. Methods The Subjects were selected by select criteria and exclusion criteria from January 1, 2000 to September 30, 2017. The herbal prescription and composition of the selected subjects were analyzed. The effects and statistical significance of selected studies were verified by comparing the control and treatment groups of frequently used cytokines (tumor necrosis factor $[TNF]-{\alpha}$, interleukin $[IL]-1{\beta}$, IL-6). Results 52 kinds of herbal prescriptions and 118 kinds of individual herbs were used in 64 studies. Among the 52 kinds of herbal prescriptions, Daeganghwal-tang (4 times) was used most frequently. Among the 118 kinds of individual herbs, Glycyrrhizae Radix (49 times), Angelicae Giantis Radix (34 times), Osterici Radix (24 times) were used most frequently in order. The prescription that has the highest $TNF-{\alpha}$ decline is Changchooldoin-tang. The prescription that has the highest $IL-1{\beta}$ decline is Banggibokryeong-tang. The prescription that has the highest IL-6 decline is Gwanjeol8ho-bang. Conclusions Daeganghwal-tang (herbal prescription) and Glycyrrhizae Radix, Angelicae Giantis Radix, Osterici Radix (individual herbs) were used most frequently. The prescriptions that have the highest cytokines decline were Changchooldoin-tang, Banggibokryeong-tang and Gwanjeol8ho-bang.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.46 no.12
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• pp.87-95
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• 2009

In this paper, an area-efficient FFT processor is proposed for MIMO-OFDM based SDR systems. The proposed scalable FFT processor can support the variable length of 64, 128, 512, 1024 and 2048. By reducing the required number of non-trivial multipliers with mixed-radix (MR) and multi-path delay commutator (MDC) architecture, the complexity of the proposed FFT processor is dramatically decreased without sacrificing system throughput The proposed FFT processor was designed in hardware description language (HDL) and synthesized to gate4eve1 circuits using 0.18um CMOS standard cell library. With the proposed architecture, the gate count for the processor is 46K and the size of memory is 64Kbits, which are reduced by 59% and 39%, respectively, compared with those of the 4-channel radix-2 single-path delay feedback (R2SDF) FFT processor. Also, compared with 4-channel radix-2 MDC (R2MDC) FFT processor, it is confirmed that the gate count and memory size are reduced by 16.4% and 26.8, respectively.

• Korean Journal of Pharmacognosy
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• v.34 no.1 s.132
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• pp.10-13
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• 2003

This study is to establish the quality control method of Adenophorae Radix. (6R,7R)-E,E-tetradeca-4,12-diene-8,10-diyne-1,6,7-triol (1) isolated from this plant was adequate as an analytical marker. Content of 1 in Adenophorae Radix was $0.006\;{\pm}\;0.003%$ (n = 43). In addition, total ash content was $6.5\;{\pm}\;4.0%$, and loss on drying was $12.1\;{\pm}\;2.1%$.