Comparison of diapause and non-diapause induced Orius sauteri (Hemiptera: Anthocoridae) based on a two-sex life table in the laboratory

Meng Sun,Bing Lü,Zhao-yun Lyu,Yang Zhang,Yi-Fan Zhai,Hao Chen,Li Zheng,Yi Yu 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.4

The flower bug Orius sauteri (Poppius) is commonly used as an effective biocontrol agent for controlling small pest populations in greenhouses in China. The impact of two temperature and photoperiod regimes (26 °C, L16:D8 h; 21 °C, L8:D16 h) on the life table of O. sauteri was studied in the laboratory using an age-stage, two-sex life-table method. The results showed that the low-temperature short-photoperiod regime resulted in significant increases of the developmental times of the egg, the first to fifth nymphal stages, and the total preadult stage. Female adult longevity was significantly increased, whereas male adult longevity was significantly decreased, under this regime. Furthermore, the adult preoviposition period (APOP), the total preoviposition period (TPOP), and the sex ratio were all increased under this regime. Fecundity decreased, whereas the mean generation time (T) increased, as temperature and photoperiod decreased. The intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (Ro) all increased as the temperature decreased under diapause induction. Based on the estimated data, the higher r value (0.06 d−1) occurred under the 26 °C, L16:D8 h regime, compared with 0.03 d−1, under the 21 °C, L8:D16 h regime. Thus, the results showed that reproductive diapause slowed O. sauteri population growth, about 50% reduction based on r. There is significant interest in using O. sauteri as a biological control agent against non-diapausing small pests, such as thrips, in greenhouses under short photoperiods. However, based on the current results, managers should consider maintaining a high temperature and long photoperiod to prevent reproductive diapause induction in O. sauteri. Such conditions should not have a detrimental effect on the greenhouse crops

The change of animation narrative structure caused by virtual reality technology

Yi-meng Li(이이맹),Jong-woo Joo(주종우) 한국디지털콘텐츠학회 2019 한국디지털콘텐츠학회논문지 Vol.20 No.3

VR(Virtual Reality) technology is a computer simulation technology that can create and experience a Virtual world, using a computer to generate interactive 3D images in real time.These physical behavior simulations can help you immerse yourself in a virtual environment.At present, VR technology is used in many fields, such as games, healthcare, education and entertainment.And now, the animation industry has developed into a paperless 3d image, which is closely related to technological innovation. But all the animations have a common disadvantage, that is the single transmission of information.In this research, four VR animations of Google company were selected and analyzed from multiple directions based on visual guidance and animation stories.In addition, by analyzing the existing visual guidance methods of VR animation, the method of developing multi-linear story content is found, and on this basis, the technology and art in VR animation are balanced.Through this research, we can find the development direction of VR animation in the future.

Development and characterization of a potential diagnostic monoclonal antibody against capsid protein VP1 of the chicken anemia virus

Yi-Yang Lien,Chi-Hung Huang,Fang-Chun Sun,Shyang-Chwen Sheu,Tsung-Chi Lu,Meng-Shiunn Lee,Shu-Chin Hsueh,Hsi-Jien Chen,Meng-Shiou Lee 대한수의학회 2012 JOURNAL OF VETERINARY SCIENCE Vol.13 No.1

Chicken anemia virus (CAV) is an important viral pathogen that causes anemia and severe immunodeficiency syndrome in chickens worldwide. In this study, a potential diagnostic monoclonal antibody against the CAV VP1 protein was developed which can precisely recognize the CAV antigen for diagnostic and virus recovery purposes. The VP1 gene of CAV encoding the N-terminus-deleted VP1 protein, VP1Nd129, was cloned into an Escherichia (E.) coli expression vector. After isopropyl-b-D-thiogalactopyronoside induction, VP1Nd129 protein was shown to be successfully expressed in the E. coli. By performing an enzyme-linked immunoabsorbent assay using two coating antigens, purified VP1Nd129 and CAV-infected liver tissue lysate, E3 monoclonal antibody (mAb) was found to have higher reactivity against VP1 protein than the other positive clones according to the result of limiting dilution method from 64 clones. Using immunohistochemistry, the presence of the VP1-specific mAb, E3, was confirmed using CAV- infected liver and thymus tissues as positive-infected samples. Additionally, CAV particle purification was also performed using an immunoaffinity column containing E3 mAb. The monoclonal E3 mAb developed in this study will not only be very useful for detecting CAV infection and performing histopathology studies of infected chickens, but may also be used to purify CAV particles in the future.

Poster Session : NO/ROS in Cell Signaling ; Molecular and structural basis for S-nitrosylation of protein tyrosine phosphatase 1B: implication of protection against irreversible oxidation

( Yi Yun Chen ),( Kuan Ting Pan ),( Hsing Mao Chu ),( Yi Fen Huang ),( Andrew H. - J. Wang ),( Kay Hooi Khoo ),( Tzu Ching Meng ) 한국생화학분자생물학회 (구 한국생화학회) 2007 생화학분자생물학회 춘계학술발표논문집 Vol.2007 No.-

Symposia : No/ROS in Cell signaling ; Molecular and Structural basis for S-nitrosylation of protein tyrosine phosphatase 1B: implication of protection against irreversible oxidation

( Yi Yun Chen ),( Kuan Ting Pan ),( Hsing Mao Chu ),( Yi Fen Huang ),( Andrew H. J. Wang ),( Kay Hooi Khoo ),( Tzu Ching Meng ) 한국생화학분자생물학회 (구 한국생화학회) 2007 생화학분자생물학회 춘계학술발표논문집 Vol.2007 No.-

Adaptive Containment Control for a Class of Uncertain Multi-agent Systems With Unknown Virtual Control Gain Functions

Meng-Yi Jiang,Yong-Hui Yang,Li-Bing Wu,Qi Li 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.9

In this paper, we consider a containment control problem for a class of uncertain multi-agent systems (MASs). The systems contain unknown parameters and virtual control gain functions. By introducing lower bounds of virtual control gain functions into the Lyapunov functions, a novel controller design scheme is proposed based on an adaptive control design approach and bound estimation method. The designed controller is simpler in comparison with other controllers. The simulation results show that three followers converge into the convex hull rapidly following the sinusoidal leaders, and the effectiveness of the designed controller is verified.

Improved image alignment algorithm based on projective invariant for aerial video stabilization

( Meng Yi ),( Bao-long Guo ),( Chun-man Yan ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.9

In many moving object detection problems of an aerial video, accurate and robust stabilization is of critical importance. In this paper, a novel accurate image alignment algorithm for aerial electronic image stabilization (EIS) is described. The feature points are first selected using optimal derivative filters based Harris detector, which can improve differentiation accuracy and obtain the precise coordinates of feature points. Then we choose the Delaunay Triangulation edges to find the matching pairs between feature points in overlapping images. The most “useful” matching points that belong to the background are used to find the global transformation parameters using the projective invariant. Finally, intentional motion of the camera is accumulated for correction by Sage-Husa adaptive filtering. Experiment results illustrate that the proposed algorithm is applied to the aerial captured video sequences with various dynamic scenes for performance demonstrations.

수업컨설팅에 대한 중국 중등학교 교사들의 요구분석

멍이 ( Meng Yi ),한우진 ( Han Woojin ),이상수 ( Lee Sangsoo ) 부산대학교 과학교육연구소 2021 교사교육연구 Vol.60 No.1

본 연구는 수업컨설팅에 대한 중국 중등교사들의 요구를 조사하는데 그 목적이 있다. 연구대상은 중국 산동성에 소재한 중학교 4개교, 고등학교 4개교의 중등교사 총 430명이며 조사를 위해 설문으로 수업컨설팅의 특징들에 대해 ‘필요수준정도’와 ‘현재수준정도’를 설문으로 조사하였다. 분석방법으로 t검증과 Borich 요구도 공식, The Locus for Focus 모델을 중첩하여 사용하였다. 연구 결과, 중국의 중등교사들은 수업컨설팅에 대한 요구를 가지고 있는 것으로 나타났으며, 구체적으로 수업을 과학적으로 분석하는 것, 교사와 외부 수업전문가의 협력적 관계, 교사 이외의 다양한 차원(학생, 조직구조, 문화, 환경 등)에서의 수업문제 원인을 분석하는 것, 수업문제의 근본적 원인을 해결하는데 초점을 둔 개선안에 대한 요구가 가장 높은 것으로 나타났다. 이에 따라 수업컨설팅의 필요성, 체제적 접근 지원, 컨설티와 컨설턴트의 협력적 관계 형성, 자기수업컨설팅 모델의 적용 가능성 검토에 관한 제안점이 논의되었다. The purpose of this study was to investigate the needs of instructional consultation for teachers working in secondary schools in China. A total of 430 secondary school teachers in Shandong Province, China provided usable data for this study. The t-test, Borich needs assessment model, and The Locus for Focus Model were implemented and analyzed. The results of the study, it was found that secondary school teachers in China have a demand for the instructional consultation. Specifically, an instructional analysis conducted by a scientific way, the cooperative relationship between teachers and instructional consultants, a systematic analysis of the instructional problems, and interventions focused on solving the root cause of instructional problems were derived as priorities. Accordingly, suggestions for the necessity of instructional consultation, supporting systemic approach, cooperative relationship between consultees and consultants, applicability of the self-consultation model of instruction were discussed.

Optimization of the construction scheme of the cable-strut tensile structure based on error sensitivity analysis

Lian-meng Chen,Dong Hu,Hua Deng,Yu-hong Cui,Yi-yi Zhou 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.21 No.5

Optimization of the construction scheme of the cable-strut tensile structure based on error sensitivity analysis is studied in this paper. First, the element length was extracted as a fundamental variable, and the relationship between element length change and element internal force was established. By setting all pre-stresses in active cables to zero, the equation between the pre-stress deviation in the passive cables and the element length error was obtained to analyze and evaluate the error effects under different construction schemes. Afterwards, based on the probability statistics theory, the mathematical model of element length error is set up. The statistical features of the pre-stress deviation were achieved. Finally, a cable-strut tensile structure model with a diameter of 5.0 m was fabricated. The element length errors are simulated by adjusting the element length, and each member in one symmetrical unit was elongated by 3 mm to explore the error sensitivity of each type of element. The numerical analysis of error sensitivity was also carried out by the FEA model in ANSYS software, where the element length change was simulated by implementing appropriate temperature changes. The theoretical analysis and experimental results both indicated that different elements had different error sensitivities. Likewise, different construction schemes had different construction precisions, and the optimal construction scheme should be chosen for the real construction projects to achieve lower error effects, lower cost and greater convenience.

Determination of a Monitoring Scheme for Controlling Construction Errors of a Cable-strut Tensile Structure

Lian-meng Chen,Wei-feng Gao,Dong Hu,Yi-yi Zhou,Fu-bo Zhang,Shi-lin Dong 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.10

Construction errors are inevitable in real cable-strut tensile structures. Nevertheless, the relevant work, especially the monitoring scheme design work, to control the construction errors is lacking. At present, the monitoring schemes always lay out the monitored members in the places with great internal force or great deformation, do not consider the method to control the construction errors and do not explain the method to lay out the monitored members in fundamental theory. To address this situation, the element length error, which is an important construction error affecting the bearing performance, is considered as the factor variable and the fundamental equation of pre-stress deviation and element length error is derived firstly. Next the methods to express the pre-stress deviation, which are only derived from the active cable length errors or from both the active cable and passive cable length errors, are discussed. After that, based on the condition that the errors can be solved and compensated, the least number of monitored members is determined. Moreover, those members sensitive to cable length deviation of active cables are selected as monitored members. In order to evaluate the effect level caused by passive cable length deviation, two evaluation parameters Δ and ρ are further discussed. Finally, one cable-strut tensile structure example is employed to verify the proposed method and the results of the example studies indicate that the least necessary number of monitored members can be achieved for the accurate solution and compensation of active cable length deviations. Different members have different sensitivities to the change of the length in active cables and those members with great sensitivities can be chosen in prior as monitored members. The evaluation parameters Δ and ρ can be used to analyze the source of errors and to evaluate the error effect level caused by the passive cable length deviation.