Study on the Moisture and Thermal Characteristics of Vegetated Expansive Soil Slopes

Quan Shen,Yidan Zhang,Canrong Xie,Chengli Zhang,ChaoHui Wang 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.6

The moisture and thermal characteristics of expansive soil slopes have a significant impact on the strength and overall stability of the soil. In this study, the medium-strength expansive soil vegetated slope in Baise, Guangxi, was taken as the research object. Through the combination of numerical simulation and measured meteorological data, the impact of moisture and heat characteristics on slope stability was then analyzed, and optimal geometric parameters conducive to the stability of vegetated slopes were proposed based on these findings. The research results indicate that under long-term climatic conditions, solar net radiation has the most sensitive effect on the evaporation of slope soil. During the evaporation process, vegetation transpiration dominates in the vegetation-covered layer, while below the depth of the vegetation cover layer, soil evaporation itself plays a dominant role. Under the conditions of evaporation-rainfall-evaporation, slopes with a smaller permeability coefficient in the vegetation cover layer have significantly higher safety factors than slopes with a larger permeability coefficient and bare slopes. A steep vegetated slope with a slope gradient of 50° can maintain slope stability with proper handling of its height. The research findings have reference value for the design and construction of vegetated slopes with expansive soil.

Assessment of the Bone Mineral Density and Microstructure of the Human Femoral Head according to Different Tip-apex Distances Can Guide the Treatment of Intertrochanteric Hip Fractures

( Quan-hu Shen ),( Jiwoong Baik ),( Yeyeon Won ) 대한고관절학회 2021 Hip and Pelvis Vol.33 No.4

Purpose: We analyzed the microstructure and bone mineral density (BMD) of the trabecular bone in the femoral head of patients with osteoporosis. Materials and Methods: Sixteen femoral heads with osteoporotic femoral neck fractures underwent microcomputed tomography scanning. In each tip-apex distance (TAD) of 15, 20, and 25 mm, five regions of interest (ROIs) were extracted from the central, anterior, posterior, superior, and inferior sections. A total of 15 ROIs were extracted from TADs of 15, 20, and 25 mm. The measurement parameters included BMD, percent bone volume: bone volume/total volume (BV/TV), trabecular thickness (Tb.Th), trabecular number (Tb.N), structural model index (SMI), and degree of anisotropy (DOA). Results: The lowest BMD and BV/TV values were observed in the inferior region and differed significantly from those in other regions (P<0.05). Lower Tb.Th and Tb.N values were observed in the inferior region compared with those in the central region (P<0.05). The highest SMI value was observed in the inferior region (P<0.05). With TAD of 15 and 20 mm, the DOA values in the inferior region were lower than those in the anterior region (P<0.05). Lower BMD and BV/TV values were observed in the anterior, central, and inferior regions of TAD of 15 mm compared with those in the corresponding regions of TAD of 25 mm (P<0.05). Conclusion: Positioning the lag screw between TAD of 20 to 25 mm and in the inferior region is recommended, and TAD of less than 15 mm is not recommended.

중국 조선어의 언어 접촉과 코드 스위칭 연구 -베이징시 조선족 구어 담화를 중심으로

신천 ( Shen Quan ) 영주어문학회 2020 영주어문 Vol.46 No.-

중국 조선족은 다민족 사회에서 생활하면서 기타 사회 집단과의 빈번한 접촉으로 인해 언어 사용에서 언어 혼용, 코드 스위칭 등의 변이 양상을 보이고 있다. 조선어는 전형적인 과경(跨境)언어로서 복잡하고 다양한 언어 접촉 및 언어 변이가 발생하고 있다. 거시적으로 조선족 언어 사용 중에 나타나는 코드 스위칭 현상에 대한 연구를 통해 조선족의 언어 생활에서 조선어와 한어 그리고 한국어를 선택적으로 구사할 때의 교제 목적 및 심리적 욕구 등을 분석함으로써 언어 사용 및 변이에서 의사 소통의 목적, 심리적 욕구의 역할에 대한 연구를 목적에 두었다. 본 연구에서는 사회언어학적 시각에서 베이징시 조선족 구어 담화 사용 실태 분석을 통해 베이징 조선족의 기본 언어 상황과 사용 상황 및 언어 태도에 대해서 조사를 진행하였고 이를 바탕으로 코드 스위칭과의 연관성 분석을 진행하였다. 코드 스위칭은 어휘체계, 화용 방면에 여러가지 영향을 끼치고 있으며 조선어의 어휘체계 및 화용법을 넓히는 순기능이 있음을 확인할 수 있었다. 한국으로의 이주 등에 의해 형성된 서울의 조선족 집단 거주지에서의 코드 스위칭 현상 조사와 분석의 제시는 향후 연구로 미룬다. Living in a multi-ethnic community, the language of Chinese Joseon people have varied from use to blending and code-switching due to people’s frequent contact with other social groups. 조선어 is a typical and diameter (跨境) complex and diverse language as language contact and language variation is occurring. Through the macroscopical study on the phenomenon of code-switching during the language use of the Joseon people, the study on the role of communicative purposes and psychological needs in the language use and variation of Korean, Chinese and Korean selectively in the language life of the Joseon people was put forward. This study has probed into the basic language situation, usage situation and language attitude of Beijing Chosun tribe through the analysis of the usage of spoken discourse in Beijing from the perspective of sociolinguistics, and based on this, the analysis of its association with code-switching is conducted. It has been shown that there are many different ways of doing this, and that it is important to understand how to do this. The investigation and analysis of the phenomenon of code-switching in the Korean enclave in Seoul formed by the migration to Korea etc. are put forward to the future research.

중국 “신창타이” 시대의 재정지출이 취업에 미치는 영향

심권평 ( Shen Quan-ping ),김종섭 ( Kim Jong-sup ) 국제지역학회 2017 국제지역학회 춘계학술대회 Vol.2017 No.-

2007년 이후 중국경제는 고속성장에서 중·고속성장으로 변화되면서 “신창타이”시대에 진입함과 더불어 경제·사회적으로 큰 변화를 나타내고 있으며 새로운 패러다임하에 취업문제가 큰 관심을 받게 되었다. 따라서 국가경제의 발전과 조절에서 중요한 역할을 하고 있는 재정지출이 취업에 대하여 어떤 영향을 미치고, 지역별로 어떤 차이를 보이며, 그 영향이 어떻게 변화되는지를 파악하는 것이 본 연구의 목적이다. 연구목적을 달성하기 위하여 중국의 31개 성·시 패널자료를 이용하여 2SLS방법을 적용하였다. 신창타이모형(2008-2015년)과 전체기간모형(1998-2015년)으로 구분하여 분석한 결과, 신창타이모형에서 재정지출이 도시취업률에 미치는 영향이 총취업률보다 더 크고, 고소득지역에 미치는 영향이 저소득지역보다 더 크게 나타났다. 의료위생·과학기술지출은 총취업률에 긍정적 영향을 주고, 사회보장 및 취업·교육지출은 도시취업률에 긍정적 영향을 주는 것으로 나타났다. 전체기간모형에서는 재정지출이 취업에 미치는 영향패턴이 신창타이모형과 비슷하게 나타났지만 탄력성측면에서 큰 차이를보였다. 따라서 “신창타이”시대에 진입하면서 재정지출이 취업에 미치는 효과는 증가되고 있는 실정이며, 재정지출 구조의 변화를 이루어야 “신창타이”시대에 재정지출이 취업에 미치는 효율성이 증가될 수 있을 것이다. Under the new normal, the China`s economy growth has changed rapid growth to moderate growth since 2007. With new paradigm, China is facing an abnormally severe employment situation. Also the financial expenditure is an important macro adjustment method. The research analyzes both implications of financial expenditures to employment in China, and the trend of implication in different regions. The research was conducted by 2SLS method using the panel data of 31 Chinese local governments(provinces, cities, and autonomous districts) during 1998 to 2015. The main findings are as follows. In the new normal model(2008-2015), the financial expenditure to urban employment have higher effect than total employment. Also, higher income region have more positive effect than lower income region. Medical, technology expenditure have positive effect to total employment, social security, education expenditure have positive effect to urban employment. In the total model(1998-2015) have similar results with new normal model, but the elasticity is more higher than total model. Ultimately, it can be seen that the efficiency of financial expenditure is lower than new normal model. The government should improve the expenditure structure, so as to promote the effect of financial expenditure to employment in new normal economy.

중국 “신창타이” 시대의 재정지출이 취업에 미치는 영향

심권평 ( Shen Quan-ping ),김종섭 ( Kim Jong-sup ) 국제지역학회 2017 국제지역연구 Vol.21 No.2

2007년 이후 중국경제는 고속성장에서 중·고속성장으로 변화되면서 “신창타이”시대에 진입함과 더불어 경제·사회적으로 큰 변화를 나타내고 있으며 새로운 패러다임 하에 취업문제가 큰 관심을 받게 되었다. 따라서 국가경제의 발전과 조절에서 중요한 역할을 하고 있는 재정지출이 취업에 대하여 어떤 영향을 미치고, 지역별로 어떤 차이를 보이며, 그 영향이 어떻게 변화되는지를 파악하는 것이 본 연구의 목적이며, 31개 성·시 패널자료를 이용하였다. 신창타이기간(2008-2015년)과 전체기간(1998-2015년)으로 구분하여 분석한 결과, 신창타이기간에서 재정지출이 도시취업률에 미치는 영향이 총취업률보다 더 크고, 고소득지역에 미치는 영향이 저소득지역보다 더 크게 나타났다. 의료위생·과학기술지출은 총취업률에 긍정적 영향을 주고, 사회보장 및 취업·교육지출은 도시취업률에 긍정적 영향을 주는 것으로 나타났다. 전체기간에서는 재정지출이 취업에 미치는 영향패턴이 신창타이기간 분석과 비슷하게 나타났지만 탄력성측면에서 큰 차이를 보였다. 따라서 “신창타이”시대에 진입하면서 재정지출이 취업에 미치는 효과는 긍정적인 것으로 나타났다. 사회보장 및 취업·교육·의료위생·과학기술부문 지출을 확대하고 경제건설, 일반행정과 같은 지출의 감소 등 재정지출 구조를 변화시켜야 “신창타이”시대에 있어서 재정지출의 취업에 대한 효율성을 증가시킬 수 있을 것이다. Under the new normal, the China`s economy growth has changed rapid growth to moderate growth since 2007. With new paradigm, China is facing an abnormally severe employment situation. Also the financial expenditure is an important macro adjustment method. The research analyzes both implications of financial expenditures to employment in China, and the trend of implication in different regions. The research was conducted by 2SLS method using the panel data of 31 Chinese local governments(provinces, cities, and autonomous districts) during 1998 to 2015. The main findings are as follows. In the new normal model(2008-2015), the financial expenditure to urban employment have higher effect than total employment. Also, higher income region have more positive effect than lower income region. Medical, technology expenditure have positive effect to total employment, social security, education expenditure have positive effect to urban employment. In the total model(1998-2015) have similar results with new normal model, but the elasticity is more higher than total model. Ultimately, it can be seen that the efficiency of financial expenditure is lower than new normal model. The government should increase the proportion of expenditure in fields of social security, education, medical, technology, and improve the expenditure structure. So as to promote the effect of financial expenditure to employment in new normal economy.

Efficacy and Safety of Selumetinib Compared with Current Therapies for Advanced Cancer: a Meta-analysis

Shen, Chen-Tian,Qiu, Zhong-Ling,Luo, Quan-Yong Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.5

Background and Aim: Selumetinib is a promising and interesting targeted therapy agent as it may reverse radioiodine uptake in patients with radioiodine-refractory differentiated thyroid cancer. We conduct this metaanalysis to compare the efficacy and safety of selumetinib with current therapies in patients with advanced cancer. Methods: An electronic search was conducted using PubMed/ Medicine, EMBASE and Cochrane library databases. Statistical analyses were carried out using either random-effects or fixed-effects models according to the heterogeneity of eligible studies. Results: Six eligible trials involved 601 patients were identified. Compared with current therapies, treatment schedules with selumetinib did not improve progression free survival (hazard ratio, 0.91; 95%CI 0.70-1.17, P= 0.448), but did identify better clinical benefits (odds ratio, 1.24; 95%CI 0.69-2.24, P = 0.472) and less disease progression (hazard ratio, 0.72; 95%CI 0.51-1.00, P = 0.052) though its impact was not statistically significant. Sub-group analysis resulted in significantly improved progression free survival (hazard ratio, 0.61; 95%CI 0.49-0.57, P = 0.00), clinical benefits (odds ratio, 3.04; 95%CI 1.60-5.77, P = 0.001) and reduced disease progression (hazard ratio, 0.35; 95%CI 0.18-0.67, P = 0.001) in patients administrated selumetinib. Dermatitis acneiform (risk ratio, 9.775; 95%CI 3.143-30.395, P = 0.00) and peripheral edema (risk ratio, 2.371; 95%CI 1.690-3.327, P = 0.00) are the most frequently observed adverse effects associated with selumetinib. Conclusions: Compared with current chemotherapy, selumetinib has modest clinical activity as monotherapy in patients with advanced cancer, but combinations of selumetinib with cytotoxic agents in patients with BRAF or KRAS mutations hold great promise for cancer treatment. Dermatitis acneiform and peripheral edema are the most frequently observed adverse effects in patients with selumetinib.

Analysis of Germplasm in American Black Walnut by RAPD Markers

Xiang Shen,Zhi quan. Mao,Ji xiang. Zhang,Lei Wang,Jing Zhang 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Fluid-Structure Interaction Analysis of Bioprosthetic Heart Valve

Bingshen Shen,Quan Yuan,Xia Zhang,Xiao Zhang 한국생산제조학회 2014 한국생산제조시스템학회 학술발표대회 논문집 Vol.2014 No.9(2)

Unloading Deformation of Rock Slopes Under High Geo-stress Condition

( Fa Quan Wu ),( Shen Wen Qi ),( Tong Liu ) 대한지질공학회 2007 국제학술발표회 논문집 Vol.2007 No.-

Member capacity-based progressive collapse analysis of transmission towers under wind load

Yong-Quan Li,Yong Chen,Guohui Shen,Wenjuan Lou,Weijian Zhao,Hao Wang 한국풍공학회 2021 Wind and Structures, An International Journal (WAS Vol.33 No.4

The wind-induced collapse of transmission towers has raised many concerns. Progressive collapse analysis is recognized as a promising method for the assessment of the collapse-resistant capacity of the transmission tower. The finite element model of an actual transmission tower is firstly built for the analysis, in which the dynamic behavior of the member in failure is taken into account to be in accord with the actual tower collapse. The analysis considering the main design load cases is conducted in advance to determine the case under which the tower has the potential to collapse. The incremental dynamic analysis in association with the explicit time integration algorithm is employed to perform a progressive collapse analysis, where the wind loads are simulated by using the linear filtering method, and the developed failure criterion with axial force and bending moment involved is based on the stability bearing capacity of the members. It is found the tower collapse begins with the horizontal bracing member near the waist. Then, the adjacent members, including the leg members, fail sequentially, and the tower collapses eventually with a shear-type failure. The demand to capacity ratio (DCR) in terms of bearing capacity of the member is defined to quantify the structural behavior, the location of the member that has the potential to fail, and when the initial failure occurs are thereby identified. It is concluded that compared to the member capacity-based analysis, the ultimate strain-based analysis, which is most likely to be an inelastic dynamic analysis permitting a large deformation, may overestimate the bearing capacity of the structure in wind-induced collapse.