http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
국내외 거시경제변수를 고려한 주택의 매매와 전세 가격 간 동조화 변화분석
장한익(Han-Ik Jang),임병권(Byungkwon Lim),김형근(Hyung Keun Kim) 한국주택학회 2019 주택연구 Vol.27 No.4
본 연구는 우리나라의 소규모 개방경제인 특성을 고려하여 통화정책과 거시경제변수들이 주택가격과 전세가격 간에 동조화 현상에 동태적으로 어떤 영향을 미치는가를 분석한 다. 이를 위해 미국연방자금금리(FFR)를 블록외생성(Block Exogenous)를 가정한 SVAR (1)모형을 설정하여 주택가격과 전세가격의 동조화 현상을 동태적으로 살펴보았다. 먼저 CD금리, 산업생산지수, 소비자물가지수 등의 요인이 주택과 전세가격에 미치는 동시기 인과관계를 살펴보면, 주택가격은 산업생산지수와 전세가격이 증가하면 함께 증가하는 것으로 나타났으며, 전세가격은 CD금리, 산업생산지수, 소비자물가지수, 주택가격이 증가하면 함께 증가하는 것으로 나타났다. 한편 충격반응의 결과를 살펴보면, 주택가격은 국내외 금리의 1% 상승충격이 발생하면 감소하지만, 전세가격은 증가한다. 주택가격은 산업 생산지수의 1% 상승충격, 전세가격은 소비자물가지수의 1% 상승충격에 더 민감하게 증가 하는 것으로 확인된다. 하지만 이런 관계의 영향력은 시간의 흐름에 따라 최근 약화되는 추세를 보인다. 마지막으로 주택가격과 전세가격 간의 동조화 현상을 살펴보면, 동시기적으로 주택가격에 대한 전세가격의 동조화는 국내외 금리, 경기요인 등의 영향보다 주택가격 변화가 미치는 영향이 크며, 전세가격에 대한 주택가격의 동조화는 금리변화, 경기변화에 민감하게 반응한다. This study investigates the change of comovement between the house price and the rent price (hereafter Jeonse price). The methodology used in this study is the SVAR (1) model that assumes the US federal funds rate (FFR) to be block exogenous, and dynamically examines the comovement of the house price and the Jeonse price in the Korean housing market from 2004 to 2018. The main results are as follows. First, we found that the increase in house price is related to the increase in the industrial production index (IPI) and Jeonse price. We also found that the increase in Jeonse price is associated with the increase in the interest rate, IPI, consumer price index (CPI), and house price. Meanwhile, we find that the house price decreases in the 1% upward pressure of domestic and foreign interest rate shock. However, Jeonse price is only influenced by the domestic interest rate shock. It is noted that the increase of IPI and CPI commonly affects both the house price and the Jeonse price. Second, we carried out a rolling regression analysis in order to identify the dynamic casual relationship. We find that the impact of house price and Jeonse price from the IPI and CPI decrease as the interest rate goes up in the global financial market. Finally, we analyze the comovement between the house price and the Jeonse price. We find that the comovement of Jeonse price on the house price is significantly influenced by the change of Jeonse price rather than economic factors, such as interest rate. However, the result shows asymmetry in the house price. The comovement of the house price in relation to the Jeonse price is further influenced by the change of interest rate or economic conditions.
Kwak, Jong Hwan,He, Yanxia,Yoon, Byungkwon,Koo, Seyoung,Yang, Zhigang,Kang, Eun Ju,Lee, Bong Ho,Han, Seung-Yun,Yoo, Yung Choon,Lee, Kyung Bok,Kim, Jong Seung The Royal Society of Chemistry 2014 Chemical communications Vol.50 No.86
<P>Rhodamine-labelled dieckol (<B>1</B>) synthesized through a click reaction was found to be localized in the endoplasmic reticulum (ER) of RAW 264.7 cells. Anti-inflammatory activity of compound <B>1</B> was considerably greater than that of dieckol itself.</P> <P>Graphic Abstract</P><P>Rhodamine-labelled dieckol localized in the ER of RAW cells. Anti-inflammatory activity of the compound was greater than that of dieckol. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc04270k'> </P>
Lim, Guh-Hwan,Kwak, Sung Soo,Kwon, Nayoung,Kim, Taekyung,Kim, Han,Kim, Seong Min,Kim, Sang-Woo,Lim, Byungkwon Elsevier 2017 Nano energy Vol.42 No.-
<P><B>Abstract</B></P> <P>A patchable triboelectric nanogenerator (TENG) is highly promising for self-powered human-motion detection, but it may undergo repeated stretching/releasing cycles during daily activities of a human, which may lead to mechanical fracture of each component and degradation in electrical output performance of the TENG device. Here, we report a fully stretchable and durable triboelectric nanogenerator (TENG) with gold (Au) nanosheets (NSs) embedded into both PDMS matrix and micropyramid-patterned PDMS. It was found that a new design of the Au NS electrodes dramatically improves the mechanical flexibility and stretchability, enabling to achieve the outstanding output stability of the Au NS electrode-based TENG (Au NS-TENG) during 10,000 cycles of repeated pushing and stretching tests. Our fully stretchable and durable Au NS-TENGs were successfully applied to the hand joints that can be used in the self-powered human-motion detection processes for wearable applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We report a fully stretchable and durable triboelectric nanogenerator (TENG). </LI> <LI> The TENG consisted of gold nanosheet (Au NS)-embedded elastomer electrodes. </LI> <LI> Au NS-TENG showed excellent output stability during pushing and stretching tests. </LI> <LI> Au NS-TENGs were successfully applied for self-powered human-motion detection. </LI> </UL> </P> <P><B>Graphic abstract</B></P> <P>Fully stretchable and durable triboelectric nanogenerator with gold nanosheet embedded into both PDMS matrix and micro pyramid patterned PDMS has been successfully demonstrated in both pushing and stretching modes, then the durability test with 10,000 cycles. As our device is applied to hand joints, the possibility of self-powered systems as power source for wearable applications has been shown.</P> <P>[DISPLAY OMISSION]</P>
Saemee Yun,Kangmo Koo,Jimin Lee,Ji Young Park,Byungkwon Jang,BoKyeong Han,Yong-Ho Choa 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
Magnetic Nd2Fe14B nanoparticles are synthesized by a bottom-up process via calciothermic reduction,which complements the negative reduction potential of rare-earth elements, thus affording nanoscaleproducts. However, to obtain high-purity, high-performance magnetic nanoparticles, residual calciumby-products that persist after calcium thermal reduction-diffusion must be selectively removed. In previouslyreported rinsing methods, H2O or H+ diffuse into the magnetic nanoparticles, thereby leading tohydridation. Herein, we propose a novel rinsing solution, NH4NO3/methanol, that does not deteriorate themagnetic properties. The magnetic properties are enhanced by selectively removing calcium by-products(i.e., CaO) from the magnetic nanoparticles with NH4NO3/methanol solution and by preventing hydridationand oxidation using zeolite and Schlenk line. The intrinsic coercivity (Hci) is maintained at 75.1 %(from 8.5 kOe to 6.3 kOe), and the saturation magnetization (Ms) increases two-fold (110.08 emu/g) afterrinsing with NH4NO3 solution, compared with prior to rinsing treatment (47.363 emu/g). Rinsing themagnetic nanoparticles with NH4NO3/methanol solutions does not cause deterioration of the obtainedNd2Fe14B nanostructures, where Ms = 112.0 emu/g and Hci = 8.4 kOe after rinsing with NH4NO3/methanolusing the zeolite and Schlenk line. Using rinsing methods in previous studies. 3.5 % of the initial coercivityis maintained, whereas with the new rinsing method, 95.2 % of the coercivity is maintained, thus indicatingthat rinsing does not induce deterioration of the magnetic properties.