Recently, the concept of damped outrigger system has been proposed for tall buildings. But, structural characteristics and design method of this system were not sufficiently investigated to date. In this study, the dynamic response control performance of outrigger damper has been analyzed. To this end, a simplified analysis model with outrigger damper system has been developed. An artificial wind of 1000 seconds with 0.1 second time steps was generated by using a Kaimal spectrum. Analysis results show that outrigger damper system is more effective up to 20-23% in the control of dynamic response compared to conventional outrigger system. The increase of outrigger damper capacity usually results in the improved control performance. However, it is necessary to select that proper stiffness and damping values of the outrigger damper system because, the outrigger damper having large capacity is result in heavy financial burden.
This paper describes the design and implementation of situation recognition system with smart phone sensors, which recognizes the dangerous situation at anytime, anywhere through intuitive data analysis of the combination of the sensor. The implemented system consists of wearable heart rate sensor and acceleration sensor of smart phone instead of existing sensor that is attached to the body. It is also designed to get more effective results of recognition about the dangerous situation using merged displacement values of acceleration sensor and heart rate sensor which are measured in the process of recognizing dangerous situations. This research, in accordance with the wide penetration of smartphones, achieves the fast status determination through the combination of an acceleration sensor and a heart rate sensor applied to its own status perception algorithm for anyone who needs the stable perception of risk without the need for a separate provision of the sensor.
본 연구는 한국과 미국 두 국가 간의 잡지광고에 대한 정보단서를 비교연구하기 위해 실시되었다. 한국광고-1,046개, 미국광고-1,472개, 총 광고-2,518개의 잡지광고가 분석에 사용되었으며, 연구결과로는 과거에 비해 광고의 정보단서 양이 현저히 감소된 점을 발견할 수 있었다. 평균 정보단서가 2개 미만인 광고는 한국의 경우 79.1%, 미국의 경우 76.4%로 나타나 선행연구에 비해 정보량이 훨씬 적은 것으로 나타났으며, 최근 광고에서 이성적 소구의 광고에 비해 감성광고가 많아졌음을 보여주고 있다. 광고에 포함된 구체적인 정보유형에 있어서 구입처와 성능에 대한 정보가 한국의 경우 93.2%, 미국의 경우 78%로 가장 높게 나타났으며, 한국의 잡지에서는 구입처에 대한 정보, 미국의 잡지에서는 성능에 대한 정보가 가장 높게 나타났다. 잡지유형별로는 두 나라 모두 컴퓨터관련 잡지광고가 가장 많은 정보단서를 포함하고 있었으며, 광고 사이즈별 정보단서를 비교해본 결과 한국의 경우 광고 사이즈가 작을수록 많은 정보단서를 가지는 흥미로운 결과를 보여 주었으며 미국의 경우 광고 사이즈별 정보단서에 있어서 유의한 차이를 보이지 않는 것으로 나타났다.
In this study, the back analysis program was developed by applying the genetic algorithm, one of artificial intelligence fields, to the direct method. The optimization process which influences efficiency of the direct method was modulated with genetic algorithm, and then the whole back analysis program was combined with the boundary element method code as a tool of forward analysis. The modulated genetic algorithm program also was combined with FLAC (Fast Lagrangian Analysis of Continua), a commercial finite difference program. On conditions that the displacement computed by forward analysis for a certain rock mass model was the same as the displacement measured at the tunnel section, back analysis was executed to verify the validity of the program. Usefulness of the program was confirmed by comparing relative errors calculated by back analysis, which is carried out under the same rock mass conditions as analysis model of Gens et al. (1987), one of previous back analysis case. We estimated the total displacement occurred by tunneling with the crown settlement and convergence measured at the working faces in three tunnel sites of Kyungbu Train Express. Those data measured at the working face are used for back analysis as the input data after confidence test. As the results of the back analysis, we comprehended the tendency of tunnel behaviors with comparing the respective deformation characteristics obtained by the measurement at the working face and by back analysis. Also the usefulness and applying possibility of the back analysis program developed in this study was verified.
A low noisy graphic digitizer is composed of an AGC, ADC, and PLL. In order to satisfy the specification of triple channel UXGA compatible TFT LCD panels, novel techniques and algorithms are proposed. It has been fabricated with a 5 metal 0.25 um CMOS technology. The chip area is about 3.6 mm/spl times/3.2 mm with 520 mW power dissipation at 2.5 V power supply. The maximum jitter noise of the PLL is about 10 ps at 230 MHz clock speed. The INL and DNL of the ADC are within 1 LSB.
Korean Abstract: 이 연구는 지정학적 요충에 자리잡고 막대한 천연자원을 보유하여 전략적 가치가 상당한 지역 중견국 이란과 한국 간의 지속가능한 협력방안을 도출하는 데 핵심목적을 두고 있다. 이제 막 경제제재가 해제되면서 전 세계의 관심이 집중되는 이란과 미국, 러시아, EU 등 주요 강대국간의 관계를 세밀히 분석하여 이란의 대외적 행동패턴을 도출하고, 이란의 거시경제, 산업구조, 재정상황에 대한 포괄적인 분석을 시도하여 이란에 대한 정확한 이해를 돕고자 한다. 따라서 본고는 이란과의 장기적인 협력관계 구축을 희망하는 한국정부에 유용한 시사점을 제공할 수 있을 것이다.
English Abstract: After years of agonizing negotiations, Iran and P5+1(US, Russia, China, France, UK) & Germany finally reached a Joint Comprehensive Plan of Action(JCPOA) in July 2015 to resolve the dispute over Teheran's alleged nuclear development program. Thanks to the agreement, in January 2016 years of a tough economic sanctions imposed on Iran started being lifted. Since then, tremendous attention from the global community has been pouring into this natural resource rich and strategically located country of 80 million population with enormous economic, political, and diplomatic potential. This report tries to provide a way to build sustainable relationships between South Korea and Iran based on firm understanding of the historical, geostrategic, and economic essentials of this important country.
We first lay out theoretical foundation of this country by providing historical background of Iran focusing on her interaction with global and regional changes mainly caused by the great power balance of power. We argue that neorealist framework and middle power theory are extremely useful to comprehend the complex relationships between Iran and some of the chosen great powers and Iran's foreign policy behaviors.
The relationships between Iran and the US has been relatively short and cozy until WWII. Yet after the US assumed the leadership position from the UK after WWII, and the Cold War competition with the Soviet Union intensified, the US interest in Iran became more intrusive and coercive. Washington did not hesitate to overthrow a democratically elected government of Iran in 1953 and replaced it with pro-US Pahlavi regime. Despite severe criticism due to the Shah's autocratic policy, the US supported it unconditionally as a bulwark Cold War ally in the Middle East. Yet the Iranian Revolution dashed the US hope of maintaining a foothold in the region against Moscow and the ensuing Hostage Crisis caused unending deep animosity and mistrust between the new regime in Teheran and Washington. Several attempts and opportunities to bring rapprochement between the two were missed. Finally, Obama and Rouhani were able to agree to improve relationships between the US and Iran, and it contributed to the signing of the JCPOA. Yet the surprising election victory of anti-Iran stance Trump in the US has brought new uncertainty regarding their relationships.
Russia's strategic perception toward Iran is based on the concept of the sphere of influence. In comparison of it, Iran's political response to Russian influence is to strategically balance great powers. Iran has attracted competing powers in Russia to offset Russia’s influence.
Geopolitically, the strategic interests of Iran and Russia can overlap in the Middle East, Caucasus, and Central Asia. Iran and Russia share five strategic interests in Central Asia and the Caucasus region:
② prevention of regional conflicts; ③ opposition to military intervention by offshore countries; ④ antiterrorism-regional cooperation; ⑤ development and cooperation for energy resources; ⑥ regional economic and security community.
After the Cold War, Iran's trade and economic cooperation with Russia has been in a state of underdevelopment. The most notable area of economic cooperation between Iran and Russia is the energy sector. If Iran's natural gas production increases in the long term after the economic sanctions are lifted and the natural gas production gap between the two countries narrows sharply, their competition in the downstream markets in Europe is likely to increase.
It can be said that bilateral relations of Iran and Russia are sensitively linked to changes in US-Russian relations. If the US-Russia relationship has improved and is cooperative(consensual), the Russian-Iranian relationship has temporarily cooled down, and on the contrary, the cooperation between the two countries has been restored.
Domestic political changes in Iran and Russia have played an important role in bilateral relations. Since the Islamic Revolution, Iran has been more favorable to Russia than the United States. Domestic political changes in Russia due to the dissolution of the Soviet Union also played an critical role in the formation of cooperation and conflict patterns of the two countries. In the early post-Cold War era, pro-Westernist Atlanticism of Yeltsin administration was negative for its relationship with Iran. Putin administration’s Eurasianist policy (or ‘Pivot to the East’) provided favorable strategic environment for Iran.
[연구목적] 물질주의의 부정적인 영향에 대한 선행연구들은 이루어져 왔지만, 물질주의가 과시소비 및 충동구매에 영향을 미치고 이러한 비합리적인 소비가 삶의 만족 및 부정적 감정에 미치는 전체 변수들 간의 연구는 전무했기에 본 연구에서 이러한 관계들이 동시에 미치는 영향을 살펴보고자 한다. [연구방법] 본 연구는 자료 분석을 위해 신뢰도분석, 탐색적 요인분석, 확인적 요인분석을 실시한 후 측정모델의 적합도를 평가하였고, 이를 바탕으로 측정모형과 구조모델을 동시에 측정하는 구조방정식 검증을 실시하였다. [연구결과] 본 연구를 통한 결과는 다음과 같다. 물질주의가 높을수록 과시소비와 충동구매를 더 하는 것으로 나타났다. 그리고 과시소비 성향이 높을수록 삶의 만족도는 낮아지며, 부정적 감정은 높았다. 마지막으로 충동구매 성향이 높을수록 부정적 감정은 높았지만, 삶의 만족도에는 영향을 미치지 않는 것으로 나타났다. [연구의 시사점] 본 연구의 결과를 토대로 청소년들의 올바른 가치관과 소비 형태를 정립할 수 있는 교육 자료로 활용할 수 있을 것이라 본다. 그리고 물질주의를 통한 올바르지 못한 구매들이 부정적인 감정을 높이고 삶의 만족을 떨어뜨릴 수 있음을 공익광고를 통해 건전한 인식 전환을 시도해 볼 수 있을 것이며, 구매 후에 느낄 수 있는 부정적 감정들에 대해서는 과시를 통한 우월감, 만족감으로 대신하거나, 실용적인 측면들을 내세워 소비에 대한 정당성을 확보하여 부정적 감정들을 완화 시킬 수 있을 것으로 본다.
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