Event-triggered Finite-time Consensus with Fully Continuous Communication Free for Second-order Multi-agent Systems

An Zhang,Ding Zhou,Pan Yang,Mi Yang 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.4

This study deals with finite-time consensus problems of second-order multi-agent systems with intrinsicnonlinear dynamics and external bounded disturbances. First, instead of the time-triggered control algorithm, theevent-triggered control algorithm is developed by using integral sliding mode control strategy. Then, a triggeringfunction is explicitly constructed to generate event sequences, and the triggering function is fully continuous communicationfree. Rigorous proof is given by using Lyapunov stability theory and finite-time stability theory. Severalconditions are derived to guarantee the finite-time consensus and exclude Zeno behavior. Finally, a simulation ofsingle-link robotic arms is given to verify the effectiveness of the results.

Molecular and cytological analyses of A and C genomes at meiosis in synthetic allotriploid Brassica hybrids (ACC) between B.napus (AACC) and B.oleracea (CC)

Yan Yang1,Xiaochun Wei,Gongyao Shi,Fang Wei,Janeen Braynen,Jingshu Zhang,Baoming Tian,Gangqiang Cao,Xiaowei Zhang 한국식물학회 2017 Journal of Plant Biology Vol.60 No.2

Success of interspecific hybridization relies mostly on the adequate similarity between the implicated genomes to ensure synapsis, pairing and recombination between appropriate chromosomes during meiosis in allopolyploid species. Allotetraploid Brassica napus (AACC) is a model of natural hybridization between Brassica rapa (AA) and Brassica oleracea (CC), which are originally derived from a common ancestor, but genomic constitution of the same chromosomes probably varied among these species through time after establishment, giving rise to cytogenetic difference in the synthetic hybrids. Herein we investigated meiotic behaviors of A and C chromosomes of synthetic allotriploid Brassica hybrids (ACC) at molecular and cytological levels, which result from the interspecific cross between natural B. napus (AACC) and B.oleracea (CC), and the results showed that meiosis course was significantly aberrant in allotriploid Brassica hybrids, and chromosomes aligned chaotically at metaphase I, chromosome bridges and lags were frequently observed from later metaphase I to anaphase II during meiosis. Simultaneously, we also noticed that meiosis-related genes were abruptly down-regulated in allotriploid Brassica hybrids, which likely accounted for irregular scenario of meiosis observed in these synthetic hybrids. Therefore, these results indicated that inter-genomic exchanges of A and C chromosomes could occur frequently in synthetic Brassica hybrids, and provided an efficient approach for genetic changes of homeologous chromosomes during meiosis in polyploid B.napus breeding program.

중국영화의 전통 수묵화 촬영기법 연구 - 장이머우 영화 < 삼국-무영자(Shadow) 2018 > 중심으로

장서붕 ( Zhang Ruifeng ),양윤호 ( Yang Yun-ho ) 부산대학교 영화연구소 2020 아시아영화연구 Vol.13 No.3

본 연구는 장이머우(張藝謀) 감독의 작품< 삼국-무영자(Shadow, 影), 2018 >에 나타난 중국 전통 수묵화 기법의 대표적인 촬영장면과 영상기법에 대하여 분석하고자 한다. 이 영화를 대표 사례로 선정한 이유는 중국에서 색채를 이용하는 대표적인 감독이라 알려진 장이머우 감독이 시도한 최초의 중국 전통 수묵화 스타일의 영화이기 때문이다. 이는 중국 영화 역사상으로도 주목할 만한 첫 번째 도전이라고 할 수 있다. 따라서 장이머우 감독의 촬영 스타일에 관한 논문 및 인터뷰 등의 자료들을 바탕으로 중국영화의 전통 수묵화(水墨畵) 촬영기법 분석을 구체적으로 분석하기 위해 먼저 회화기법과 중국영화, 장이머우 감독 영상의 특징을 고찰하고 중국 전통 수묵화 기법의 특징을 여백(餘白)과 색채, 구도로 구분하여 고찰하고자 한다. 이러한 선행연구를 바탕으로 영화 <삼국-무영자>에서 활용된 중국 전통 수묵화 촬영기법을 분석함으로써 효과와 결론을 제시하고자 한다. 중국의 대표적인 감독인 장이머우의 중국 전통 수묵화 기법의 운용과 효과에 대한 분석은 향후 중국영화 촬영연구에 있어 새로운 계기가 될 것으로 보인다. First of all, this paper aims to confirm the utilization of Chinese traditional Ink-and-Wash painting skill through the analysis of the filming skills of director Zhang Yi-mou's film Shadow(影, 2018). Specifically, it will be the work of analyzing and interpreting the Ink-and-Wash painting skill of Shadow shooting skills through composition, color, etc. These traditional Chinese Ink-and-Wash painting skills are currently used in Chinese film making. While verifying how it is utilized, director Zhang Yi-mou of filming is aimed at verifying the practice of traditional Chinese Ink-and-Wash painting skills. Zhang Yi-mou's film features a Chinese-style not only in narrative, but also in screen composition. It is clear that Zhang Yi-mou represents a generation in the Chinese film industry, so the author hopes this article will provide a point of view that can be applied in the application of Chinese-style filming skills in Chinese film. The method and procedure of this study are as following. First and foremost, analyze the Zhang Yi-Mou's film Shadow by referring to the papers and interviews of filming style. In his film, traditional Chinese Ink-and-Wash painting skills are realized in any way, and the reason why chose this film because that was the Chinese commercial film which first made by Chinese Ink-and-Wash painting skills. Next, in the main part, director Zhang Yi-Mou, who naturally applies Ink-and-wash painting skills in the screen, examines the characteristics and meaning of the combination of Ink-and-Wash Painting skills and shooting through the composition, space, movement, color, and costume of a specific scene. Finally, the author plans to derive how to use the unique skills contained in traditional culture in the film making process.

Two New Species of the Genus Allozelotes Yin & Peng, 1998 (Araneae, Gnaphosidae) from China

Yang Zi-Zhong, Zhang Zi-Sheng, Zhang Yao-Guang, Joo Pil Kim(김주필) 한국거미연구소 2009 한국거미 Vol.25 No.1-2

중국 Yunnan 지역에서 채집한 수리거미과의 Allozelotes 속의 2 신종을 기재하여 보고하는 바이다. 즉 Allozelotes songi sp. nov.와 A. microsaccatus sp. nov. 이다. 표본은 SWUC와 CDLC에 보관한다. 측정치는 millimeters이다. Two new species of the genus Allozelotes collected from Yunnan, China, are described and illustrated: Allozelotes songi sp. nov. and A. microsaccatus sp. nov. Type specimens are respectively deposited in School of Life Science, Southwest University(SWUC) and College of Life Science and Chemistry, Dali University(CDLC). All measurements given are in millimeters.

A new species of Stibadocerella Brunetti, 1918 from China (Diptera, Cylindrotomidae)

Zhang Bing,Gao Shang,Yang Qi-Cheng,Ren Jin-Long,Yang Ding 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2

Four species of the genus Stibadocerella Brunetti, 1918 were previously known from the world. Here one new species, Stibadocerella shennongensis Zhang & Yang, sp. nov. is reported from Hubei, China. New record Stiba docerella pristina Brunetti, 1918 from Hainan, China is re-described and illustrated. A key to the known species of Stibadocerella is presented. www.zoobank.org/urn:lsid:zoobank.org:pub:45002F67-2C20-4F3C-A543-81F802EA3900.

A multi-objective optimization for HAWT blades design by considering structural strength

Yang Yang,Chun Li,Wanfu Zhang,Jun Yang,Zhou Ye,Weipao Miao,Kehua Ye 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.8

The challenge of wind turbine blade design is to balance the conflict between high capacity and heavy system loads introduced by the large scale rotor. To solve this problem, we present a multi-objective optimization method to maximize the Annual energy production (AEP) and minimize the blade mass. The well-known Blade element momentum (BEM) theory is employed to predict the aerodynamic performance and AEP of the blade. The blade is simplified as a thin Bernoulli beam. The cross section is modelled as a combination of composite layer, shear webs and spar caps typically. The strain of every cross section has been considered as a constraint to minimize the spar cap thickness for minimizing the blade mass. An improved genetic algorithm (NSGA-II) is applied to obtain the Pareto front set. Several solutions of the Pareto set are selected to compare with the reference blade (NREL 5MW blade). Performance of the rotors on design condition is simulated by STAR-CCM+ to verify the results of BEM theory. Optimal results show that the present blade, which is fully superior to the reference blade, can be selected from the Pareto set. The optimization design method can provide a superior blade with an increase by 2.48% of AEP and a reduction by 5.52% of the blade mass. It indicates the present optimization method is effective. Results of numerical simulations show that the spanwise flow would be increased obviously in tip region of the reference blade. The reason is that chord length variation in blade tip affects the flow and causes minor stall. The abrupt change of chord distribution in blade tip should be avoided to reduce the spanwise flow in initial blade design.

New Formula ZD4IgS_Q Applied to Solving Future Nonlinear Systems of Equations with Abundant Numerical Experiment Verification

Yunong Zhang,Jinjin Guo,Binbin Qiu,Yang Shi,Zhi Yang 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10

In this paper, a new formula called Zhang discretization 4-instant g-square with subtype Q (i.e., ZD4IgS_Q) is proposed, which is used for discretizing continuous-time zeroing neurodynamics (CTZN) model. Besides, in order to solve future nonlinear systems of equations (FNSoE), also termed discrete time-varying nonlinear systems of equations, a ZD4IgS_Q-type discrete-time zeroing neurodynamics (DTZN) model with O(g³) steady-state residual error pattern is acquired by adopting the formula ZD4IgS_Q. For comparison purposes, an Euler-type DTZN model with O(g²) steadystate residual error pattern is also presented. Abundant numerical experimental results show that, compared with Eulertype DTZN model, the ZD4IgS_Q-type DTZN model has better computational performance in terms of solving FNSoE.

rs10505474 and rs7837328 at 8q24 Cumulatively Confer Risk of Prostate Cancer in Northern Han Chinese

Zhang, Lin-Lin,Sun, Liang,Zhu, Xiao-Quan,Xu, Yong,Yang, Kuo,Yang, Fan,Yang, Yi-Ge,Chen, Guo-Qiang,Fu, Ji-Cheng,Zheng, Chen-Guang,Li, Ying,Mu, Xiao-Qiu,Shi, Xiao-Hong,Zhao, Fan,Wang, Fei,Yang, Ze,Wang, Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.7

Aims: Genome-wide association studies (GWAS) have identified several risk variants for prostate cancer (pCa) mainly in Europeans, which need to be further verified in other racial groups. We selected six previously identified variants as candidates and to define the association with PCa in Northern Han Chinese. Methods: 749 subjects from Beijing and Tianjin in Northern China were included. Six variants (rs10505474, rs7837328, rs4242384, rs7813, rs486907 and rs1058205) were genotyped by high resolution melting (HRM) assays. The individual and cumulative contribution for of the risk of PCa and clinical covariates were analyzed. Results: Among the six candidate variants, onlyrs10505474, and rs7837328, both locating at 8q24 region, were associated with PCa in our population.rs10505474 (A) was associated with PCa ($OR_{recessive}=1.56$, p=0.006); and rs7837328 (A) was associated with PCa ($OR_{dominant}=1.38$, p=0.042/$OR_{recessive}=1.99$, p=0.003). Moreover, we observed a cumulative effects between them ($p_{trend}=2.58{\times}10^{-5}$). The joint population attributable risk showed the two variants might account for 71.85% of PCa risk. In addition, we found the homozygotes of rs10505474 (A) and rs7837328 (A) were associated with PCa clinical covariants (age at onset, tumor stage, respectively) ($p_{age}=0.046$, $P_{tumorstage}=0.048$). Conclusion: rs10505474 (A) and rs7387328 (A) at 8q24 are associated with PCa and cumulatively confer risk, suggesting the two variations could determine susceptibility to PCa in the Northern Chinese Han population.

A controllable single-molecule single-photon source

Yang LUO,Yao ZHANG,Li ZHANG,Yunjie YU,Yanmin KUANG,Qiushi MENG,Yang ZHANG,Zhenchao DONG 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

A new species of Stibadocerella Brunetti, 1918 from China (Diptera, Cylindrotomidae)

Zhang Bing,Gao Shang,Yang Qi-Cheng,Ren Jin-Long,Yang Ding 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.3

Four species of the genus Stibadocerella Brunetti, 1918 were previously known from the world. Here one new species, Stibadocerella shennongensis Zhang & Yang, sp. nov. is reported from Hubei, China. New record Stiba docerella pristina Brunetti, 1918 from Hainan, China is re-described and illustrated. A key to the known species of Stibadocerella is presented. www.zoobank.org/urn:lsid:zoobank.org:pub:45002F67-2C20-4F3C-A543-81F802EA3900.