• Journal of the Institute of Electronics Engineers of Korea SD
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• v.45 no.6
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• pp.89-95
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• 2008

In this paper, we designed a low power face detection hardware and analysed its power consumption. The face detection hardware was fabricated using Samsung 0.18um CMOS technology and it can detect multiple face locations from a 2-D image. The hardware is composed of 6 functional modules and 11 internal memories. We introduced two operating modes(SLEEP and ACTIVE) to save power and a clock gating technique was used at two different levels: modules and registers. In additional, we divided an internal memory into several pieces to reduce the energy consumed when accessing memories, and fully utilized low power design option provided in Synopsis Design Compiler. As a result, we could obtain 68% power reduction in ACTIVE mode compared to the original design in which none of the above low power techniques were used.

• Korean Journal of Biological Psychiatry
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• v.19 no.1
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• pp.53-59
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• 2012

Objectives : Autobiographical memory (ABM) is a special type of episodic memory, containing events that have occurred in a personal life. Overgeneral tendency of ABM refers to the retrieval of memory with only general and categorical descriptions rather than specific events. ABM specificity in depression and posttraumatic stress disorder is a robust finding with relation to cognitive vulnerability, affect regulation, problem-solving ability. It is also implicated in bipolar disorder with frequent relapses. In this study, we investigated whether ABM specificity was related to manic or euthymic mood states in patients with bipolar disorder. Methods : Forty bipolar patients with manic and euthymic episodes and 25 healthy controls participated in this study. Prompted by 5 positively and 5 negatively valenced emotional cue words, each participant was instructed to recall positive or negative memories and describe them in detail. The One-way ANOVA was used to compare ABM scores and post-hoc analyses were done. Results : Comapred to the healthy persons, the bipolar patients reported significantly more general than specific negative memories in both manic and euthymic episodes (p = 0.003). However, there was no significant difference between manic and euthymic patients (p = 0.074). Conclusions : These results suggest that overgeneral tendency of negative ABM may be a trait abnormality in bipolar disorder. Moreover, this phenomenon might be related to underlying cognitive deficits or affect regulation irrespective of the mood state.

• The Journal of the Acoustical Society of Korea
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• v.15 no.5
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• pp.73-81
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• 1996

In multiprocessor systems with multiple processors and memories, efficient communication between processors and memories is critical for high performance. Various types of multistage networks have been proposed. The economic feasibility and the improvements in both computing throughput and fault tolerance/diagnosis have been some of the most important factors in the development of these computer systems. In this paper, we present an efficient algorithm for the diagnosis of generalized cube interconnection networks with a fan-in/fan-out of 2. Also, using the assumed fault model present total fault diagnosis by generating suitable fault-detection and fault-location test sets for link stuck fault, switching element fault in direct/cross states, including broadcast diagnosis methods based on some basic properties or generalized cube interconnection networks. Finally, we illustrate some example.

• Korean Journal of Optics and Photonics
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• v.12 no.1
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• pp.61-66
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• 2001

Defocused Fourier plane holograms are stored in disk-type holographic memories where thin recording media are used, the areal storage density per hologram and the intensity uniformity of the signal beam at the recording plane are studied. As the pixel pitch of the spatial light modulator that represents binary data increases, the storage density per hologram increases if exact Fourier holograms are stored. When defocused Fourier plane holograms are stored, however, we show that there exists an optimal pixel pitch that maximizes the area storage density per hologram in general, to increase the areal storage density per hologram, f/# of the Fourier transform lens that focuses the data image should be as small as possible. In this case, not only the intensity distribution at the recording plane but also the recording area becomes very sensitive to the degree of defocusing. Therefore, even if the exact Fourier plane holograms are stored, the defocusing effect owing to the medium thickness should be taken into account to achieve the maximal areal storage density per hologram.logram.

• Journal of Oriental Neuropsychiatry
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• v.29 no.1
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• pp.21-34
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• 2018

Objectives: The purpose of this study is to understand the theories about the psychophysiology and psychopathology of Korean Medicine. Methods: The concepts and functions of spirit (神), soul (魂魄), five spirits (五神), and seven emotions (七情) occurring in the Huangdineijing have been interpreted, and the correlation between thought and emotion considered. Results and Conclusions: (1) Spirit (神) refers to the source and discipline of vital activity and mental activity. (2) With soul (魂魄), ethereal soul (魂) manifests itself as the mental process, and corporeal soul (魄) as the physical sensory interaction, such as the nervous system. (3) In the five spirits, ethereal soul (魂) is the recognition process of drawing out memories. Spirit (神) is the process of creative thought. Cognition (意) is the ability to recognize and integrate information. Corporeal soul (魄) is the process of selecting what is important and choosing it. Will (志) is the process of storing memories. Ethereal soul (魂) and corporeal soul (魄) of the five spirits (五神) and soul (魂魄) use the same characters, but the meaning differs. Also, spirit (神) and the spirit (神) in five spirits (五神) are the same character, but, because the meaning is different, they need to be interpreted according to the context. (4) Heart (心), Cognition (意), Will (志), Thought (思), Consideration (慮), and Wisdom(智) are all cognitive processes, like perception, recognition, and thinking. (5) Psychopathology is when excessive emotion affects the five viscera, harming the Energy (氣) and Blood (血) and eventually affecting the five spirits, which causes problems in thinking. Therefore, for healthy mental functioning, not only must the emotions be regulated so that they do not become excessive, but the five viscera also need to be kept healthy.

• Journal of the Korean Ceramic Society
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• v.42 no.2 s.273
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• pp.94-98
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• 2005

$RuO_2$ is widely studied as a lower electrode material for high dielectric capacitors in DRAM (Dynamic Random Access Memories) and FRAM (Ferroelectric Random Access Memories). In this study, the effects of hydrogen, oxygen, and argon Electron Cyclotron Resonance (ECR) plasma pretreatments on deposited by Metal Organic Chemical Vapor Deposition (MOCVD) $RuO_2$ nucleation was investigated using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) analyses. Argon ECR plasma pretreatment was found to offer the highest $RuO_2$ nucleation density among these three pretreatments. The mechanism through which $RuO_2$ nucleation is enhanced by ECR plasma pretreatment may be that the argon or the hydrogen ECR plasma removes nitrogen and oxygen atoms at the TiN film surface so that the underlying TiN film surface is changed to Ti-rich TiN.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.47 no.1
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• pp.94-101
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• 2010

Optimization of interconnects among processors and memories becomes important as multiple processors and memories can be integrated on a Multi-Processor System-on-Chip (MPSoC). Since the optimal interconnection architecture is usually dependent on the applications, systematic design methodology for various data transfer requirements is necessary. In this paper, we focus on bus interconnection for MPSoC applications which use 4 ~ 16 processors. We propose a new systematic bus design methodology under performance constraints using Single Arbitration Multiple Bus Accesses (SAMBA) style bus architectures. Optimized bus architecture is found to satisfy performance constraints for a single or multiple applications. When compared to the unoptimized architecture, our method can reduce the bus switch logic circuits significantly (by more than 50% sometimes). Furthermore, low cost bus architectures can be found to satisfy the performance constraints for multiple applications.

• Journal of the Institute of Electronics and Information Engineers
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• v.54 no.7
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• pp.29-35
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• 2017

This paper presents a high-throughput area-efficient mixed-radix fast Fourier transform (FFT) processor using the efficient scheduling schemes. The proposed FFT processor can support 64, 128, 256, and 512-point FFTs for orthogonal frequency division multiplexing (OFDM) systems, and can achieve a high throughput using mixed-radix algorithm and eight-parallel multipath delay commutator (MDC) architecture. This paper proposes new scheduling schemes to reduce the size of read-only memories (ROMs) and complex constant multipliers without increasing delay elements and computation cycles; thus, reducing the hardware complexity further. The proposed mixed-radix MDC FFT processor is designed and implemented using the Samsung 65nm complementary metal-oxide semiconductor (CMOS) technology. The experimental result shows that the area of the proposed FFT processor is 0.36 mm2. Furthermore, the proposed processor can achieve high throughput rates of up to 2.64 GSample/s at 330 MHz.

• Journal of Korea Multimedia Society
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• v.19 no.7
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• pp.1179-1187
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• 2016

Through the rapid development of latest hardware technology, high performance as well as miniaturized size is the essentials of embedded system to meet various requirements from the society. It raises possibilities of genuine realization of IoT environment whose size and battery must be considered. However, the limitation of battery persistency and capacity restricts the long battery life time for guaranteeing real-time system. To maximize battery life time, low power technology which lowers the power consumption should be highly required. Previous researches mostly highlighted improving one single type of memory to increase ones efficiency. In this paper, reversely, considering multiple memories to optimize whole memory system is the following step for the efficient low power embedded system. Regarding to that fact, this paper suggests the study of volatile memory, whose capacity is relatively smaller but much low-powered, and non-volatile memory, which do not consume any standby power to keep data, to maximize the efficiency of the system. By executing function in specific memories, non-volatile and volatile memory, the quantitative analysis of power consumption is progressed. In spite of the opportunity cost of all of theses extra works to locate function in volatile memory, higher efficiencies of both power and energy are clearly identified compared to operating single non-volatile memory.

• Journal of the Korean Institute of Landscape Architecture
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• v.33 no.3 s.110
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• pp.65-77
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• 2005

Deokjin Park in Jeonju City was the site of a pond during the Koryo Period. Although Jeonju City has developed rapidly in modem times, Deokjin Pond was preserved and was developed into a park It can be theorized that Deokjin Pond's latent character has made it possible for it to adapt to the changes it has undergone throgh the years. In this study, the placeness of Deokjin Park is determined by examining its role in the adaptation process. Placeness can be determined by examining the objective character of a certain environment and the subjective experience related to it. For this paper, documents about the history of Deokjin Park were examined so that the facts related to it could be established. In addition, a number of Jeonju citizens were asked about their memories of Deokjin Park since memories reveal people's subjective experiences. The results of this study can be summarized as follows. Deokjin Pond is an ideal space for Feng Shui. It is a holy place because the tomb of the founder of the Chosun Dynasty is close to it. In addition, it has scenic value as it is part of the Jeonju Palkyoung (eight sceneries). To this day, we can see people washing their hair in the pond, proof that Deokjin Pond is still the subject of folk beliefs. When Korea was under Japanese rule, Deokjin Pond became Deokjin Park because of its ideal location, scenic value, and grand possibilities as an amusement center. Over the years, though its scenic value decreased after the death of its pine trees. Jeonju City, however, was able to revive the park's charm though a series of renovation projects and through the addition of several facilities. Deokjin Park is now surrounded by many cultural buildings. The significance of Deokjin Park can be expected to evolve with these changes. This study helps to predict the future of Deokjin Park and to elucidate the importance of landscape architecture from the point of view of an "evolving place."