留学生语伴互助对外语学习自我效能感的影响研究

류군 ( Liu¸ Jun ) 한국중국언어학회 2021 중국언어연구 Vol.- No.96

Based on the S-O-R theoretical model, this study analyzed the effect of language partnership on self-efficacy by selecting international students’ subjects. The following conclusions were drawn from descriptive statistics, relevant analyses, structural equation model verification and brokerage effect analysis of the research data: First, the cooperation in acquiring foreign language knowledge in the cooperation process of international students’ language partners has a great effect on helping them to increase their sense of learning effectiveness when learning a foreign language. Second, the cooperation of foreign language applications in the cooperation process of international language partners helps international students use the foreign language knowledge they have learned in real-life relationships, and greatly affects the effectiveness of learning foreign language learning. Third, foreign language emotional cooperation in the cooperation process of foreign language partners is relatively special, and research shows that it helps students learn foreign languages and experience emotions in studying abroad, and increases in their foreign language learning efficacy. Fourth, in the course of cooperation with foreign language partners, students learn foreign language easily through cooperation, and experience experience, language application practice, and emotion, and this synesthesia emotional experience affects the effectiveness of foreign language learning. The results of the research data show that the mutual assistance between the language partners of foreign students produces a sense of identification such as ease of foreign language learning, practical foreign language application and emotional experience. The model constructed in the final research process is verified: the mutual assistance between foreign students’ foreign language partners Self-efficacy in foreign language learning has a positive effect.

The Future Development of Chinese Enterprises In Northeast Asian Era

( Jun Sheng Liu ) 한국경영사학회 2004 經營史學 Vol.35 No.-

Silencing of Rac3 Inhibits Proliferation and Induces Apoptosis of Human Lung Cancer Cells

Liu, Tie-Qin,Wang, Ge-Bang,Li, Zheng-Jun,Tong, Xiang-Dong,Liu, Hong-Xu Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.7

Background: Rac3, a member of the Rac family of small guanosine triphosphatases (GTPases), regulates a variety of cell functions, including the organization of the cytoskeleton, cell migration, and invasion. Overexpression of Rac3 has been reported in several human cancers. However, the role of Rac3 in lung cancer (LC) has not been determined in detail. The purpose of this study was to investigate the effect of silencing of Rac3 expression in human LC cells and the consequences for cell survival. Materials and Methods: Lentivirus small hairpin RNA (shRNA) interference techniques were utilized to knock down the Rac3 gene. Gene and protein expression was quantified by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting. LC cell apoptosis was examined by annexin V-APC /propidium iodide staining. Results: Efficient silencing of Rac3 strongly inhibited A549 cell proliferation and colony formation ability, and significantly decreased tumor growth. Moreover, flow cytometry analysis showed that knockdown of Rac3 led to G2/M phase cell cycle arrest as well as an excess accumulation of cells in the G1 and S phase. Conclusions: Thus, functional analysis using shRNAs revealed a critical role for Rac3 in the tumor growth of LC cells. shRNA silencing of Rac3 could provide an effective strategy to treat LC.

Effect of the Concentration of the poly(3-hexylthiophene) on the Electrical Characteristics of Diode Rectifiable Devices

Jun Ting Liu,이남현,김유나,오도현,김태환 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.12

The effect of the concentration of poly(3-hexylthiophene) (P3HT) on the electrical characteristics of diode rectifiable devices fabricated utilizing the P3HT was investigated. Atomic force microscopy images showed that the root-mean-square surface roughness of the P3HT thin films decreased with decreasing P3HT concentration. The current-voltage (I-V) characteristics of the Au/P3HT layer/indium-tin-oxide-coated glass devices showed resistance switchability. The I-V characteristics of the devices showed that the ON current at the same voltage decreased with increasing concentration and that the operating voltage of the device with a larger P3HT concentration was larger than that of the device with a smaller P3HT concentration. The diode rectifiable mode of the devices transformed from the Ohmic into the space-charge-limited current modes with increasing applied voltage.

Effect of defect types in monolayer MoS2 on SO2 adsorption

Liu Ge,Liu Jianfei,Yan Jun,Chen Yunlin,Zhu Yabin,Tian Yahui 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.5

As a two-dimensional semiconductor material, molybdenum disulfde (MoS2) is extensively applied to sulfur dioxide (SO2) gas sensor. However, point defects will inevitably be produced in the preparation of MoS2, which signifcantly afect the adsorption properties of MoS2. Thus, understanding the properties of diferent point defects is essential for the successful application of MoS2. In this work, four types of point defects (VS-MoS2, VS2-MoS2, VMoS3-MoS2 and VMoS6-MoS2) of monolayers MoS2 were proposed, and the adsorption characteristics of SO2 on four typical defective MoS2 monolayers were investigated based on frst principles. The adsorption models were established to calculate the electronic properties and adsorption parameters of the adsorption systems. The results show that VMoS6-MoS2 defect has excellent adsorption properties for SO2 due to its largest adsorption energy, charge transfer and electrical response. The obtained results will contribute to the understanding of the efects on the MoS2 monolayers with diferent defects for SO2 sensing application.

Analysis of Mammographic Breast Density in a Group of Screening Chinese Women and Breast Cancer Patients

Liu, Jing,Liu, Pei-Fang,Li, Jun-Nan,Qing, Chun,Ji, Yu,Hao, Xi-Shan,Zhang, Xue-Ning Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15

Background: A dense breast not only reduces the sensitivity of mammography but also is a moderate independent risk factor for breast cancer. The percentage of Western women with fat breast tissue is higher aged 40 years or older. To a certain extent, mammography as a first choice of screening imaging method for Western women of this group is reasonable. Hitherto, the frequency and age distribution of mammographic breast density patterns among Chinese women had not been characterized. The purpose of this study was to investigate the frequency and age distribution of mammographic breast density patterns among a group of Chinese screening women and breast cancer patients in order to provide useful information for age-specific guidelines for breast cancer screening in Chinese women. Methods: A retrospective review of a total of 3,394 screening women between August and December 2009 and 2,527 breast cancer patients between July 2011 and June 2012 was conducted. Descriptive analyses were used to examine the association between age and breast density. The significance of differences of breast density between the screening women and the breast cancer patients was examined using nonparametric tests. Results: There was a significant inverse relationship between age and breast density overall (r=-0.37, p< 0.01). Breast density of the breast cancer patients in the subgroups of 40-49 years old was greater compared with that of the screening women, the same in those aged 50-54 years and in those 55 years old or older, less than in the screening group. Conclusions: With regard to the Chinese women younger than 55 years old, the diagnostic efficiency of breast cancer screening imaging examinations may be potentially improved by combining screening mammography with ultrasound.

Stabilization of Benchmark Under-actuated Systems via Saturated Controls

Jun Liu,Huawen Ye,Xianting Qi 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.11

In this paper, we present controllers to stabilize benchmark under-actuated systems such as inertia wheel pendulum (IWP), cart-pole, cart-pendulum, overhead crane, VTOL aircraft, ball-and-beam, translational oscillations with a rotational actuator (TORA), and active magnetic bearing (AMB). The mentioned systems are transformed into the feedforward systems subject to uncertain gains, the nested-saturation controllers in an almost unified form are then designed. Due to the analysis mechanism of saturation reduction (checking the time-derivatives of boundary surfaces), the bounds of uncertain gains can always be determined in small domains. In turn, there is no need to treat in advance certain subsystems, and the fully-saturated controllers (rather than partially-saturated ones) can be taken as global stabilizers. Moreover, the explicit inequality conditions can always be summarized. In addition, for the relatively complicated systems such as the overhead crane system, a non-strict upper-triangular subsystem of the ball-and-beam system as well as the TORA system, special technical strategies are developed to treat the linear perturbation, the non-strict upper-triangular structure and an oscillator.

Genetic Analysis and Molecular Mapping of Gene Associated with Dominant Genic Male Sterility in Rapeseed (Brassica napus L.)

Jun Liu,Deng Feng Hong,Wei Lu,Ping Wu Liu,Qing Biao He,Guang Sheng Yang 한국유전학회 2008 Genes & Genomics Vol.30 No.6

Rs1046AB is a dominant genic male sterility (DGMS) line derived from a spontaneous mutant in Brassica napus. The sterility of this mutant was previously regarded as to be conditioned by the interaction of a dominant male sterility gene Ms and its non-allelic dominant restorer gene Mf (or Rf in previous reports). Recent genetic analyses, however, indicated that Ms and Mf may be allelic. In this research, we confirmed that a multiple allele model should be more appropriate to elucidate the heredity of DGMS line Rs1046AB. Based on this result, the present study emphasized on identifying DNA markers linked to Ms/Mf in an F2 population constructed by crossing Rs1046A with a double haploid (DH) restorer line (19514A). Twenty amplified fragment length polymorphism (AFLP) markers linked to the Ms/Mf locus were identified by combination of bulked segregant analysis (BSA) with AFLP technique. The target locus was detected to be co-segregating with the marker S05T05 and bracketed by two nearest markers, E14M01 and E01M02, with a genetic distance of 0.1 cM and 1.2 cM, respectively. Furthermore, we successfully converted two AFLP markers into sequence characterized amplified region (SCAR) markers. These findings provided direct molecular marker proofs on the inheritance model of this DGMS line, and the high density molecular markers linkage map around the Ms/Mf locus will be more informative for both marker-assisted selection (MAS) of elite male sterile lines and isolation of the Ms/Mf genes by positional cloning in future.

New Insights into mTOR Signal Pathways in Ovarian-Related Diseases: Polycystic Ovary Syndrome and Ovarian Cancer

Liu, Ai Ling,Liao, Hong Qing,Li, Zhi Liang,Liu, Jun,Zhou, Cui Lan,Guo, Zi Fen,Xie, Hong Yan,Peng, Cui Ying Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.12

mTOR, the mammalian target of rapamycin, is a conserved serine/threonine kinase which belongs to the phosphatidyl-linositol kinase-related kinase (PIKK) family. It has two complexes called mTORC1 and mTORC2. It is well established that mTOR plays important roles in cell growth, proliferation and differentiation. Over-activation of the mTOR pathway is considered to have a relationship with the development of many types of diseases, including polycystic ovary syndrome (PCOS) and ovarian cancer (OC). mTOR pathway inhibitors, such as rapamycin and its derivatives, can directly or indirectly treat or relieve the symptoms of patients suffering from PCOS or OC. Moreover, mTOR inhibitors in combination with other chemical-molecular agents may have extraordinary efficacy. This paper will discuss links between mTOR signaling and PCOS and OC, and explore the mechanisms of mTOR inhibitors in treating these two diseases, with conclusions regarding the most effective therapeutic approaches.

Improve Constrained Recourse Fairness in Cloud Computing with Bottleneck-Aware Allocation

Jun Liu,Xi Liu 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.11

Fair resource is a key building block of any shared computing system. Recently fair division theory has emerged as a promising approach for the allocation of multiple computational resources among agents. Recent research has discussed efficiency and fairness requirements and identified a number if desirable scheduling objectives including so-called dominant resource fairness(DRF). DRF is not good between fair and resource utilization. A new allocation model Balancing Fairness and Efficiency with Bottleneck-Aware Allocation(BAA) find good appropriate balance between fairness to the clients and maximizing system utilization. But BAA without taking into account the weight value and maximum number of tasks which are users need to run. We propose the IBAA fair allocation mechanism. IBAA has lots of good properties, it satisfies DSI, PE and EF. We construct IBAA mechanisms that provably satisfy properties, and analyze the performance. We believe that our work informs the design of superior multiusers system, and at the same time expands the scope of fair division theory by initiating the study of dynamic and fair resource allocation mechanisms.