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Global variation in the piggyBac-like element of pink bollworm, Pectinophora gossypiella
Jianjun Wang,Gregory S. Simmons,Thomas A. Miller,Bruce E. Tabashnik,Yoonseong PARK 한국응용곤충학회 2011 Journal of Asia-Pacific Entomology Vol.14 No.1
The piggyBac transposable element, originally discovered in the cabbage looper, Trichoplusia ni, has been used widely in genetic engineering of insects including the pink bollworm, Pectinophora gossypiella, a major lepidopteran pest of cotton. Previously, we identified an intact copy of a piggyBac-like element (PLE) in pink bollworm, designated as PgPLE1.1. Here we report global variation in the occurrence and sequence of PgPLE1.1and its flanking sequences. Low to high frequency of the PgPLE1.1 insertion was observed in populations from USA, Mexico, China, India, and Israel, while there is no PgPLE1.1 insertion in the populations from Australia. Investigation of the five haplotypes of PgPLE1.1, their frequency, and the flanking sequences of PgPLE1.1revealed significant differences of the populations from Australia and China compared to other global populations, although recent occurrences of extensive gene flows among global populations were evident.
Analysis of HEVC Coding Standard
Jianjun Wang,Li Zhou,Tao Sun 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.7
HEVC video coding standard can achieve an average of 50% bit-rate saving, transmitting nearly the same visual quality, compared with the H.264/AVC High Profile. This paper focuses on the key features of the HEVC standard. Then it analyzes the complexity of the HEVC standard by profiling the HEVC reference software HM12.0 which is released by JCT-VC community with Intel Core i7 processor. The experiment covers different settings for a wide variety of video sequences, with the resolutions ranging from 240p to 1600p. The evaluation result shows that the HEVC standard can achieve a doubling in coding efficiency at the cost of increasing the complexity slightly. When the sequences are coded in all-intra or random-access configurations, intra prediction, loop filter, inverse transform and motion compensation are the most complex components for HEVC decoder. The motion compensation part should be given lots of consideration since it can take nearly half of the decoding time. The quantization parameter (QP) also has obvious influences on the complexity of the decoder. Besides, in practice, the HM decoder is not able to decode video content with 1080p or higher resolutions for real-time applications.
A Novel Text Copy Detection Method based on Semantic Feature
Jianjun Zhang,Xingming Sun,Jin Wang 보안공학연구지원센터 2014 International Journal of Database Theory and Appli Vol.7 No.5
With the rapid development of the Internet, getting shared resource on the network is becoming more easy, and various plagiarize is becoming to breed, so the research of text copy detection technology is becoming more important. The traditional copy detection technology is based on term frequency statistics, and does not consider the context semantic. Some plagiarism can be easily made by replacing synonyms, changing the sentence structure, or translating from one language to another language. But the traditional copy detection technology could not detect such plagiarism. In this paper, a text copy detection method based on semantic is proposed. By using an improved TFIDF algorithm, terms could be more accurately extracted from each document in the corpus. By putting the documents corresponding to the terms one by one, a terms category is built in the database. When a document is detecting, the terms are read from the database and matched. The testing results show that, compared to the traditional TFIDF algorithm, the improved method could more accurately detect the plagiarism.
STECHKIN-MARCHAUD-TYPE INEQUALITIES WITH JACOBI WEIGHTS FOR BERNSTEIN OPERATORS
Wang, Jianjun,Xue, Yinchuan,Li, Fengjun 한국전산응용수학회 2007 Journal of applied mathematics & informatics Vol.24 No.1
Using the modulus of smoothness ${\omega}^2_{{\varphi}^{\lambda}(f,t)_{\omega}$ Stechkin-Marchaud-Type inequalities with Jacobi weights of Bernstein Operators is established.
The mixed substructure synthesis method with physics-impedance-modal parameter
Wang, Jianjun,Li, Qihan,Zhu, Zhigen Techno-Press 1999 Structural Engineering and Mechanics, An Int'l Jou Vol.8 No.5
Based on the concept of the parameter-mixed synthesis, this paper presents a mixed formulation of the substructure synthesis method in terms of the physics-impedance-modal parameter. An example is given to show the validity of this method.
Electromechanical analysis of 2-2 cement-based piezoelectric transducers in series electrically
Jianjun Wang,Zhifei Shi 국제구조공학회 2014 Smart Structures and Systems, An International Jou Vol.14 No.3
his paper aims to present the analytical solutions of 2-2 cement based piezoelectric transducers in series electrically based on the theory of piezo-elastic dynamics. The solutions of two different kinds of 2-2 cement based piezoelectric transducers under external harmonic load are obtained by using the displacement method. The effects of electrical connection of piezoelectric layers, loading frequency, thickness and distance of piezoelectric layers on the characteristics of the transducers are discussed. Comparisons with other related experimental investigations are also given, and good agreement is found. The proposed 2-2 cement based piezoelectric transducers have a great potential application in monitoring structural health in civil engineering and capturing mechanical energy or monitoring train-running safety in railway system and traffic safety in road system.