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1930~1940年代における朝鮮人の「満州」への移住に関する研究
朴仁哲(Piao Renzhe) 한일민족문제학회 2009 한일민족문제연구 Vol.17 No.-
Today, the first generation Some Korean immigrants are still alive and living in the three provinces of the North~Eastern China, once called 'Manchuria'. Their relocation was closely connected with the reign of the Japanese Empire over the region and Korean peninsula. Very little, however, has been known about the historical realities of the Korean relocation to Manchuria. This paper discusses the relocation that happened during 1930s' and 1940s', with a special attention to those from Jeollabuk-do region. One of the reasons for the interest in the area, of all regions, is that its enormous number of poor farmers, despite its fertile tillable land, Jeonbuk plain, would make a typical case study for an immigrant problem. This study could be an attempt at introducing sociological viewpoints to the orthodox and traditional study of the Korean immigrants in Manchuria which has been in the domain for the historical study. In this paper, written documents as well as Oral historical documents from the first generation immigrants are adopted and used for discussion. Given the historical background of 'the fifteen years Sino-Japanese War' of which they were part, the Korean immigrants in Manchuria could embody the experience of the war, and the colonization policy of Imperial Japan. The Korean immigrants are still alive, not forgotten as mere history, with their personal memories through which we can have a clear picture of the times and life in Manchuria. The author believes in the Oral data that they would make a longer way, if coupled with attention to written documents, to understand the social realities and their confused aspects of that time. 구 '만주'지역인 현재 중국의 동북삼성에는 일제강점기에 한반도에서 이주한 조선인 '만주'이민 1세들이 아직도 거주하고 있다. 이민 1세의 이주와 정착에 관한 역사에는 일본의 '조선.만주' 지배가 깊이 결부되어 있다. 그러나 이 조선인의 '만주'이주에 관한 역사적 사실은 거의 알려지지 않았다. 본고에서는 전라북도에 주목해 1930~1940년대 조선인의 '만주'이주를 다루었다. 전라북도의 '만주'이주를 다룬 이유는 이 지역이 한반도에서 가장 비옥한 전북평야를 아우르고 있음에도 불구하고, 빈곤 농가가 광범위하게 형성되어 있어 이민문제를 연구할 수 있는 전형적 지역이기 때문이다. 본 연구에서는 역사학 분야의 정통적인 조선인의 '만주'이민 연구에 사회학적인 연구방법론을 도입하고자 했다. 본고에서는 문헌자료뿐만 아니라 조선인 '만주'이민 1세의 구술자료도 병용하였다. 이민1세가 공간을 넘어 이동을 한 시기가 '15년 전쟁'시대였음을 감안할 때 이민 1세는 식민지체험과 전쟁체험을 동시에 한 집단이다. 조선인 이민은 과거 역사로 그치지 않았다. 이들은 지금도 과거의 이민체험을 안고 현재까지 생활하고 있다. 이민 1세의 개인사를 통해 이들이 살아온 사회사를 엿볼 수 있을 것이다. 구술자료를 이용함으로써 문헌사료로는 접근할 수 없었던 당시의 복잡한 사회상황을 엿볼 수 있을 것으로 생각된다.
Geometric Optimization of Micro Drills using Taguchi Methods and Response Surface Methodology
윤해성,Renzhe Wu,이태무,안성훈 한국정밀공학회 2011 International Journal of Precision Engineering and Vol.12 No.5
Micro drill-bits for halogen-free printed circuit boards were analyzed using Taguchi methods and response surface methodology (RSM). Since micro drills have many shape factors, which are not easy to describe exactly, Taguchi methods are one of the most common optimization approaches. However, Taguchi methods can only optimize among fixed variables. Using RSM, one can create a regression surface. Optimal shapes of micro drills were determined using a normalized sum of various measures of performance. It was suggested that RSM combined with other methodologies should be used with more shape factors to further analyze the performance of micro drill-bits.
Fault Detection of Induction Motor Based on ALO Optimized TKSVDD
Yi Lingzhi,Xu Xiu,Zhao Jian,Duan Renzhe,Guo You,Sun Tao 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.1
Failure of asynchronous motor will cause motor short circuit accident, personal electric shock and other hazards, so it is very important to detect its abnormalities during its operation. In order to solve the problems of low detection accuracy and inaccurate detection results in asynchronous motor detection, a fault detection method of asynchronous motor based on ant lion optimizer optimizes three kernel support vector data description (ALO-TKSVDD) is proposed in this paper. Firstly, for the current signal of asynchronous motor, stochastic resonance is used to improve the signal-to-noise ratio; Secondly, ant lion optimizer (ALO) is used to optimize the three kernel support vector data description (TKSVDD) to detect abnormal data of the target signal; Finally, the accuracy and feasibility of ALO-TKSVDD are verifi ed. Comparative experiments show that the asynchronous motor anomaly detection method proposed in this paper has the highest accuracy and the lowest false detection rate.
Yuting Li,Ehab S. Eshak,Renzhe Cui,Kokoro Shirai,Keyang Liu,Hiroyasu Iso,Satoyo Ikehara,Akiko Tamakoshi,Shigekazu Ukawa,JACC Study Group 대한암학회 2021 Cancer Research and Treatment Vol.53 No.2
Purpose Sedentary behavior attributes to the increased risk of some cancers and all-cause mortality. The evidence is limited for the association between television (TV) viewing time, a major sedentary behavior, and risk of colorectal cancer death. We aimed to examine this association in Japanese population. Materials and Methods A prospective cohort study encompassed of 90,834 men and women aged 40-79 years with no prior history of colorectal cancer who completed a self-administered food frequency questionnaire, and provided their TV viewing information. The participants were followed-up from 1988-1990 to the end of 2009. The hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated by the Cox proportional hazard regression for risk of colorectal cancer mortality according to TV viewing time. Results During the median 19.1-year follow-up period, we documented 749 (385 men and 364 women) colorectal cancer deaths. The multivariable-adjusted HRs for mortality from colorectal cancer were 1.11 (0.88-1.41) for 1.5 to < 3 hr/day, 1.14 (0.91-1.42) for 3 to < 4.5 hr/day and 1.33 (1.02-1.73) for ≥ 4.5 hr/day in comparison to < 1.5 hr/day TV watching; p-trend=0.038, and that for 1-hour increment in TV viewing time was 1.06 (1.01-1.11). Moreover, the multivariable-adjusted HR (95% CI) of colon cancer for 1-hour increment in TV viewing time was 1.07 (1.02-1.13). Age, body mass index, and level of leisure-physical activity did not show significant effect modifications on the observed associations. Conclusion TV viewing time is associated with the increased risk of colorectal cancer mortality among Japanese population, more specifically colon rather than rectal cancer.
( Benyue Zhang ),( Hongyan Zhao ),( Hairu Yu ),( Di Chen ),( Xue Li ),( Weidong Wang ),( Renzhe Piao ),( Zongjun Cui ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.4
The rational utilization of crop straw as a raw material for natural gas production is of economic significance. In order to increase the efficiency of biogas production from agricultural straw, seasonal restrictions must be overcome. Therefore, the potential for biogas production via anaerobic straw digestion was assessed by exposing fresh, silage, and dry yellow corn straw to cow dung liquid extract as a nitrogen source. The characteristics of anaerobic corn straw digestion were comprehensively evaluated by measuring the pH, gas production, chemical oxygen demand, methane production, and volatile fatty acid content, as well as applying a modified Gompertz model and high-throughput sequencing technology to the resident microbial community. The efficiency of biogas production from fresh straw (433.8 ml/g) was higher than that of production from straw silage and dry yellow straw (46.55 ml/g and 68.75 ml/g, respectively). The cumulative biogas production from fresh straw, silage straw, and dry yellow straw was 365 l-1 g-1 VS, 322 l-1 g-1 VS, and 304 l-1 g-1 VS, respectively, whereas cumulative methane production was 1,426.33%, 1,351.35%, and 1,286.14%, respectively, and potential biogas production was 470.06 ml-1 g-1 VS, 461.73 ml-1 g-1 VS, and 451.76 ml-1 g-1 VS, respectively. Microbial community analysis showed that the corn straw was mainly metabolized by acetate-utilizing methanogens, with Methanosaeta as the dominant archaeal community. These findings provide important guidance to the biogas industry and farmers with respect to rational and efficient utilization of crop straw resources as material for biogas production.
Multi‑DoF wireless power transfer systems based on magnetic dipole coils with multiple receivers
Xiaobo Liu,Cancan Rong,Xiong Tao,Conghui Lu,Yingyin Zeng,Renzhe Liu,Minghai Liu 전력전자학회 2022 JOURNAL OF POWER ELECTRONICS Vol.22 No.3
To improve the degree of freedom (DoF), and the multi-terminal power supply capability of wireless power transfer (WPT) systems, multi-DoF WPT systems for multiple pickups based on magnetic dipole coils are proposed in this paper, which can simultaneously charge multiple receivers regardless of the position degree. First, the equivalent circuit model of the magnetic dipole coils is provided. The critical factors of the proposed multi-load systems are analyzed, such as transfer efficiency, power distribution, and optimal load. Second, a multi-load wireless power transfer system with equal transmitting (TX) and receiving (RX) coil is designed, and the misalignment tolerance of lateral and rotating occasions for the RX coils is discussed. In particular, a multi-load WPT system with miniaturized step-laminated receivers is implemented based on the magnetic dipole coils. Finally, experimental prototypes are established. The obtained results indicate that the output power for the equal dual-load WPT system can reach more than 78 W with a total efficiency of more than 80% under a transfer distance of length of the receiving coil winding. In addition, the output power of the non-equal four-load WPT system can reach 30 W with a total efficiency of 86%. The proposed systems provide practical guidance for the future development of multi-DoF WPT systems for use in portable devices, unmanned intelligent systems, and smart household applications.
Jinhong Cao,Ehab Salah Eshak,Keyang Liu,Isao Muraki,Renzhe Cui,Hiroyasu Iso,Akiko Tamakoshi 대한암학회 2019 Cancer Research and Treatment Vol.51 No.4
Purpose The evidence on effects of TV viewing time among premenopausal and postmenopausal women for breast cancer risk remains controversial and limited. Materials and Methods A prospective study encompassing 33,276 (17,568 premenopausal, and 15,708 postmenopausal) women aged 40-79 years in whom TV viewing time, menstrual, and reproductive histories were determined by a self-administered questionnaire. The follow-up was from 1988 to 2009 and hazard ratios (HRs) with 95% confidence intervals (CIs) of breast cancer incidence were calculated for longer TV viewing time in reference to shorter TV viewing time by Cox proportional hazard models. Results During 16.8-year median follow-up, we found positive associations between TV viewing time and breast cancer incidence with a borderline significant trend among total women and a significant trend among postmenopausal women. Among total women, the multivariable HRs (95% CIs) for risk of breast cancer in reference to < 1.5 hr/day of TV viewing time were 0.89 (0.59-1.34) for 1.5 to < 3.0 hr/day, 1.19 (0.82-1.74) for 3.0 to < 4.5 hr/day, and 1.45 (0.91-2.32) for 4.5 hr/day (p for trend=0.053) and among postmenopausal women, the corresponding risk estimates were 1.10 (0.42-2.88), 2.54 (1.11-5.80), and 2.37 (0.92-6.10) (p for trend=0.009), respectively. Conclusion Prolonged TV viewing time was associated with increased risk of breast cancer, especially among postmenopausal women.
Ahn, Sung-Hoon,Lee, Kyung-Tae,Kim, Hyung-Jung,Wu, Renzhe,Kim, Ji-Soo,Song, Sung-Hyuk 한국정밀공학회 2012 International Journal of Precision Engineering and Vol.13 No.4
Traditionally, hard or high-stiffness materials are used to achieve morphing but only with limited magnitudes of deformation. Soft and low-stiffness materials are required to implement soft morphing with large deformations. In this paper, a novel concept for soft morphing structures that makes use of smart soft composites (SSC) is introduced. These materials have the following characteristics: 1) Large deformations from smart actuators and soft anisotropic materials embedded in a soft matrix material, 2) Utilization of the coupling effect for in-plane/bending/twisting deformations of the morphing structure to achieve complex morphed shapes, 3) Semi-automated three-dimensional (3D) fabrication via 3D printing processes. Classical lamination theory is used to express in-plane deformation, out-of-plane deformation, and twisting and coupling of these deformations. 3D-printed-scaffold and/or weaving methods can be used to fabricate anisotropic materials for SSCs. An integrated SSC in a cantilever shape is fabricated using SMA (Shape memory alloy)/ABS/PDMS and tested as an example to show large deformation with bend/twist coupling effect.
Expression profiles of microRNAs in skeletal muscle of sheep by deep sequencing
Zhi-Jin Liu,Cun-Yuan Li,Xiao-Yue Li,Yang Yao,Wei Ni,Xiang-Yu Zhang,Yang Cao,Wureli Hazi,Dawei Wang,Renzhe Quan,Shuting Yu,Yuyu Wu,Songmin Niu,Yulong Cui,Yaseen Khan,Shengwei Hu 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.6
Objective: MicroRNAs are a class of endogenous small regulatory RNAs that regulate cell proliferation, differentiation and apoptosis. Recent studies on miRNAs are mainly focused on mice, human and pig. However, the studies on miRNAs in skeletal muscle of sheep are not comprehensive. Methods: RNA-seq technology was used to perform genomic analysis of miRNAs in prenatal and postnatal skeletal muscle of sheep. Targeted genes were predicted using miRanda software and miRNA-mRNA interactions were verified by quantitative real-time polymerase chain reaction. To further investigate the function of miRNAs, candidate targeted genes were enriched for analysis using gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment. Results: The results showed total of 1,086 known miRNAs and 40 new candidate miRNAs were detected in prenatal and postnatal skeletal muscle of sheep. In addition, 345 miRNAs (151 up-regulated, 94 down-regulated) were differentially expressed. Moreover, miRanda software was performed to predict targeted genes of miRNAs, resulting in a total of 2,833 predicted targets, especially miR-381 which targeted multiple muscle-related mRNAs. Furthermore, GO and KEGG pathway analysis confirmed that targeted genes of miRNAs were involved in development of skeletal muscles. Conclusion: This study supplements the miRNA database of sheep, which provides valuable information for further study of the biological function of miRNAs in sheep skeletal muscle.