外交修辞、话语框定与南海争端中的强制外交

曹德军 ( Cao¸ Dejun ) 성균관대학교 성균중국연구소 2021 중국사회과학논총 Vol.3 No.2

作为和平崛起大国, 中国在南海争端中的维权与维稳, 都会受到其他声索国的外交修辞约束。当中国采取强制外交时, 南海声索国会采取负面形象锚定策略, 对中国强势行为进行污名化叙事; 作为回应, 中国尽量克制使用武力, 并进行 “去安全化”修辞, 淡化冲突色彩。而当中国在争端中保持了克制, 东南亚声索国 则会积极赞赏中国的善意, 通过正向的修辞诱导强化中国和平承诺的约束力。为了平衡维权与维稳关系, 中国则进行“再框定”修辞, 提醒声索国尊重中国的历史性权利与大国地位, 共同营造区域合作的友好氛围。外交修辞的约束机制为理解中国强制外交提供了新的视角。 As a peacefully rising power, China’s enforcement of defending rights in the South China Seais often subject to diplomatic rhetorical pressure from international audiences. When China adopted coercive diplomacy, the South China Sea claimants will adopt a negative image anchoring strategy to stigmatize China’s crisis behavior. In response, China tried to restrain the use of force, and projected “de-securization” rhetoric to downplay conflict. Whereas Southeast Asian claimants will actively appreciate China’s goodwill and use positive rhetoric to induce and strengthen China’s peace commitmentswhen China exercises restraint in disputes. In order to balance the relationship between safeguarding sovereign interests and maintaining overall peace, China has to “reframe” China’s historic rights and jointly create a friendly atmosphere of regional cooperation.Understanding the restraint mechanism of diplomatic rhetoric can provide a new perspective for analyzing China’s compulsory diplomacy.

Efficient Mean-Shift Tracking Using an Improved Weighted Histogram Scheme

( Dejun Wang ),( Kai Chen ),( Weiping Sun ),( Shengsheng Yu ),( Hanbing Wang ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.6

An improved Mean-Shift (MS) tracker called joint CB-LBWH, which uses a combined weighted-histogram scheme of CBWH (Corrected Background-Weighted Histogram) and LBWH (likelihood-based Background-Weighted Histogram), is presented. Joint CB-LBWH is based on the notion that target representation employs both feature saliency and confidence to form a compound weighted histogram criterion. As the more prominent and confident features mean more significant for tracking the target, the tuned histogram by joint CB-LBWH can reduce the interference of background in target localization effectively. Comparative experimental results show that the proposed joint CB-LBWH scheme can significantly improve the efficiency and robustness of MS tracker when heavy occlusions and complex scenes exist.

Development, characterization, genetic diversity and cross-species/genera transferability of ILP markers in rubber tree (Hevea brasiliensis)

Dejun Li,Zhihui Xia,Zhi Deng,Xianghong Liu,Fuying Feng 한국유전학회 2013 Genes & Genomics Vol.35 No.6

To construct a linkage map enriched with tapping panel dryness (TPD)-related markers, we firstly utilized rubber tree ESTs associated with TPD to develop intron length polymorphism (ILP) markers. In this study,52 new ILP markers were further developed. Together with the ILP markers previously reported, 102 ILP markers developed from TPD-related ESTs were analyzed within 39 Hevea germplasm in detail. The PCR success rate and polymorphism rate of ILP markers was 97.06 and 61.62 %,respectively. The results based on PCR amplification and sequence analyses provided the evidences on cross-species/genera transferability of rubber tree ILP markers. The average polymorphic information content (PIC) values of 39 Hevea germplasm were about 0.1719, indicating that the genetic base of Hevea germplasm selected in this study was very narrow. Among 39 Hevea germplasm, the PIC value of wild rubber tree accessions was the highest, followed by Hevea species and cultivated rubber tree clones. Based on the similarity coefficient of ILP markers, 39 Hevea germplasm were divided into three groups including cultivated clones, wild accessions and Hevea species, suggesting that the classification was generally related to the characterization of Hevea germplasm. The ILP markers developed in this study further enriches the number of molecular marker in rubber tree, and the ILP markers will have a wide application in DNA fingerprinting, genetic diversity, marker-assisted selection and genetic mapping, etc. Moreover,the ILP markers transferred cross-euphorbiaceae family might be utilized in cassava, castor bean and physic nut.

EVALUATION OF A VEHICLE DIRECTIONAL CONTROL WITH A FRACTIONAL ORDER PDμ CONTROLLER

Dejun Zhuang,F. Yu,Y. Lin 한국자동차공학회 2008 International journal of automotive technology Vol.9 No.6

In this paper, a novel controller, the fractional order PDμ controller, is designed to improve the performance of the driver-vehicle system. First, fractional calculus and fractional order PIλDμ controller are introduced. A control algorithm for vehicle directional control using the fractional order PDμ controller is then presented. Based on preview-follower theory, the on-line tuning method of the fractional order PDμ controller is designed. By comparing simulated and experimental results, the validity and robustness of the proposed fractional order PDμ controller in the closed loop system are verified. Finally, comprehensive evaluations are performed between the systems with the fractional order PDμ controller and with an integer PD controller. The results demonstrate that the use of the fractional order controller leads to an improvement of the performance of the driver-vehicle system. In this paper, a novel controller, the fractional order PDμ controller, is designed to improve the performance of the driver-vehicle system. First, fractional calculus and fractional order PIλDμ controller are introduced. A control algorithm for vehicle directional control using the fractional order PDμ controller is then presented. Based on preview-follower theory, the on-line tuning method of the fractional order PDμ controller is designed. By comparing simulated and experimental results, the validity and robustness of the proposed fractional order PDμ controller in the closed loop system are verified. Finally, comprehensive evaluations are performed between the systems with the fractional order PDμ controller and with an integer PD controller. The results demonstrate that the use of the fractional order controller leads to an improvement of the performance of the driver-vehicle system.

Gorenstein dimensions of unbounded complexes under base change

Dejun Wu 대한수학회 2016 대한수학회보 Vol.53 No.3

Transfer of homological properties under base change is a classical field of study. Let $R\rightarrow S$ be a ring homomorphism. The relations of Gorenstein projective (or Gorenstein injective) dimensions of unbounded complexes between $\Ltp{U}{X}$ (or $\RHom{X}{U}$) and $X$ are considered, where $X$ is an $R$-complex and $U$ is an $S$-complex. In addition, some sufficient conditions are given under which the equalities $\Gdimm(\Ltp{U}{X})=\Gdim{X}+\pd{U}$ and $\Gidd(\RHom{X}{U})=\Gdim{X}+\id{U}$ hold.

On Direct Sums of Lifting Modules and Internal Exchange Property

Dejun, Wu Department of Mathematics 2006 Kyungpook mathematical journal Vol.46 No.1

Let R be a ring with identity and let $M=M_1{\bigoplus}M_2$ be an amply supplemented R-module. Then it is proved that $M_i$ has ($D_1$) and is $M_j-^*ojective$ for $i{\neq}j$, i = 1, 2, if and only if for any coclosed submodule X of M, there exist $M\acute{_1}{\leq}M_1$ and $M\acute{_2}{\leq}M_2$ such that $M=X{\bigoplus}M\acute{_1}{\bigoplus}M\acute{_2}$.

GORENSTEIN FLAT-COTORSION MODULES OVER FORMAL TRIANGULAR MATRIX RINGS

Wu, Dejun Korean Mathematical Society 2021 대한수학회보 Vol.58 No.6

Let A and B be rings and U be a (B, A)-bimodule. If _BU has finite flat dimension, U_A has finite flat dimension and U ⊗_A C is a cotorsion left B-module for any cotorsion left A-module C, then the Gorenstein flat-cotorsion modules over the formal triangular matrix ring $T=\(\array{A&0\\U&B}\)$ are explicitly described. As an application, it is proven that each Gorenstein flat-cotorsion left T-module is flat-cotorsion if and only if every Gorenstein flat-cotorsion left A-module and B-module is flat-cotorsion. In addition, Gorenstein flat-cotorsion dimensions over the formal triangular matrix ring T are studied.

Phase identification of $C_3N_4$ in CN films prepared by rf plasma chemical vapor deposition and dc magnetron sputtering

Fu, Dejun,Wu, Dawei,Zhang, Zhihong,Meng, Xianquan,He, Mengbing,Guo, Huaixi,Peng, Yougui,Fan, Xiangjun The Korean Vacuum Society 1998 Applied Science and Convergence Technology Vol.7 No.1

We prepared $C_3N_4$ films by rf plasma enhanced chemical vapor deposition(PCVD) and alternating $C_3N_4$/TiN composite films by dc magnetron sputtering. X-ray diffraction (XRD) and transmission electron diffraction (TED) revealed that the structure of the films is amorphous or polycrystalline, depending on deposition conditions and heat treatment. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy confirmed the presence of $sp_3\; and sp _2$ hybridized C atoms bonded with N atoms in the tetrahedral and hexagonal configurations, respectively. Graphite-free $C_3N_4$ films were obtained by PCVD under optimal conditions. To prepare well crystallized $C_3N_4$ films by magnetron sputtering, we introduced negatively biased gratings in the sputtering system. CN films deposited at grating voltages (Vg) lower than 400V are amorphous. Crystallites of cubic and $\beta$-$C_3N_4$ were formed at increased voltages.

Rapid Detection of Cotton Content Based on Near Infrared Spectroscopy Technology

Li Dejun,Xing Chigang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.6

The main research object in this paper is cotton-PET blended fabric. The study hopes that the content of cotton can be accurately obtained from the data of only a few near-infrared spectral point. In the research we choose spectra data within 1400nm-2000nm to establish the calibration model. At the time of modeling, we use the method which combine stepwise regression and normalization. The result indicates that the method can not only reduce the influence of fabric structural difference on quantitative analysis, but also achieve a relative accurate analysis of cotton content with the presence of a small amount of wavelength data.

Numerical study of Non-uniform Refrection Volume Holographic Grating

Feng, Dejun,Choi, Dong Hoon,Choi, Suk-Ho 경희대학교 자연과학종합연구원 2002 자연과학논문집 Vol.8 No.-

The properties of non-uniform reflection volume holographic grating are analyzed in detail using a matrix method in this paper. The diffraction spectra of non-uniform volume holographic are numerically simulated with computer. A kind of non-uniform refractive index distribution is used in simulation. Several factors that can influence the spectra of non-uniform volume holographic grating are amply analyzed. The simulation results are in accordance with the analyzing results by the method of solving nonlinear differential equations and our previous experimental results.