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| 1 | Anomaly Models of Spatial Structures for Copper-Molybdenum Ore Deposits and their Application显示文摘This paper discusses the enrichment and depletion regularities for porphyry copper-molybdenum ore deposits in different regions and varied deposit genetic types in the same area, taking three porphyry copper-molybdenum ore deposits (i.e., the Chengmenshan in Jiangxi, Wunugetushan in Inner Mongolia, Baishantang in Gansu) and two copper deposits in Gansu Province (the Huitongshan skarn deposit and Gongpoquan composite deposit) as case studies. The results show that porphyry Cu-Mo deposits or skarn copper deposits include both enrichment of the ore-forming elements and associated elements, and depletion of some lithophile dispersed elements, rare earth elements (REE) and some major elements. And the depleted elements vary with deposits, having generality and their own features. On a deposit scale, the positive anomalies of enriched elements and negative anomalies of depleted elements follow in a sequence to comprise regular anomaly models of spatial structures. The exploration in the Tongchang deposit in Jiangxi and Huitongshan deposit in Gansu suggests that anomaly models play a key role in the identification of mineral occurrences and deposits compared to one single enriched element anomaly. And the anomaly models exert a critical effect on the optimization of prospecting targets and their potential evaluation. | MA Shengming ZHU Lixin LIU Chongmin XI Mingjie TANG Shixin | 2013 | Acta Geologica Sinica(English Edition)2013，87，3： | 9 |
| 2 | THE RANKS OF CYCLIC AND NEGACYCLIC CODES OVER THE FINITE RING R显示文摘The ranks of cyclic and negacyclic codes over the finite chain ring R as well as their minimal generating sets are defined, and then the expression forms we presented by studying the structures of cyclic and negacyclic codes over the finite chain ring R. Through the paper, it is assumed that the length of codes n can not be divided by the characteristic of R. | Zhu Shixin Shi Minjia | 2008 | Journal of Electronics(China)2008，25，1： | 9 |
| 3 | A FAMILY OF CONSTACYCLIC CODES OVER F_2+μF_2+ vF_2+ uvF_2显示文摘这份报纸学习(1 + u )-constacyclic 在戒指 F 2 + uF 上编码 2 + vF 2 + uvF 2。这被证明图象一(1+u ) 在 2 在一个格雷下面印射的 F 2+uF 2+vF 2+uvF 上的长度 n 的 -constacyclic 代码是距离索引 2 的不变的二进制伪周期的代码和长度 4n。为任意的长度的如此的 constacyclic 代码的一套生成器被决定。一些最佳的二进制代码直接被获得从(1 + u )-constacyclic 在 F 2 + uF 上编码 2 + vF 2 + uvF 2。 | Xiaoshan KAI Shixin ZHU Liqi WANG | 2012 | Journal of Systems Science & Complexity2012，25，5： | 8 |
| 4 | Negacyclic codes over Galois rings of characteristic 2a显示文摘We investigate negacyclic codes over the Galois ring GR(2 a ,m) of length N = 2 k n,where n is odd and k 0.We first determine the structure of u-constacyclic codes of length n over the finite chain ring GR(2 a ,m)[u]/ u 2 k + 1 .Then using a ring isomorphism we obtain the structure of negacyclic codes over GR(2 a ,m) of length N = 2 k n (n odd) and explore the existence of self-dual negacyclic codes over GR(2 a ,m).A bound for the homogeneous distance of such negacyclic codes is also given. | ZHU ShiXin 1,2,& KAI XiaoShan 1,2 1 School of Mathematics,Hefei University of Technology,Hefei 230009,China 2 National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China | 2012 | Science China Mathematics2012，55，4： | 5 |
| 5 | GOOD p-ARY QUASIC-CYCLIC CODES FROM CYCLIC CODES OVER F_p+vF_p显示文摘This paper introduces a Gray map from(Fp + uFp)n to Fp2n,and describes the relationship between codes over Fp + vFp and their Gray images.The authors prove that every cyclic code of arbitrary length n over Fp + vFp is principal,and determine its generator polynomial as well as the number of cyclic codes.Moreover,the authors obtain many best-known p-ary quasic-cyclic codes in terms of their parameters via the Gray map. | Minjia SHI Shanlin YANG Shixin ZHU | 2012 | Journal of Systems Science & Complexity2012，25，2： | 5 |
| 6 | Automatic segmentation of foveal avascular zone based on adaptive watershed algorithm in retinal optical coherence tomography angiography images显示文摘The size and shape of the foveal avascular zone(FAZ)have a strong positive correlation with several vision-threatening ret inovascular diseases.The identification,segmentation and analysis of FAZ are of great significance to clinical diagnosis and treatment.We presented an adaptive watershed algorithm to automatically extract F AZ from retinal optical coherence tomography angiography(OCTA)images.For the traditional watershed algorithm,'over-segmentation'is the most common problem.FAZ is often incorrectly divided into multiple regions by redundant'dams'.This paper analyzed the relationship between the'dams'length and the maximum inscribed circle radius of FAZ,and proposed an adaptive watershed algorithm to solve the problem of'over-segmentation'.Here,132 healthy retinal images and 50 diabetic retinopathy(DR)images were used to verify the accuracy and stability of the algorithm.Three ophthal-mologists were invited to make quan titative and qualitative evaluations on the segmentation results of this algorithm.The quantitative evaluation results show that the correlation coffi-cients between the automatic and manual segmentation results are 0.945(in healthy subjects)and 0.927(in DR patients),respectively.For qualitative evaluation,the percentages of'perfect segmentation'(score of 3)and'good segmentation'(score of 2)are 99.4%(in healthy subjects)and 98.7%(in DR patients),respectively.This work promotes the application of watershed algorithm in FAZ segmentation,making it a useful tool for analyzing and diagnosing eye diseases. | Jian Liu Shixin Yan Nan Lu Dongni Yang Chunhui Fan Hongyu Lv Shuanglian Wang in Zhu Yuqian Zhao Yi Wang Zhenhe Ma Yao Yu | 2022 | Journal of Innovative Optical Health Sciences2022，15，1： | 3 |
| 7 | A MACWILLIAMS TYPE IDENTITY ON LEE WEIGHT FOR LINEAR CODES OVER F_2+uF_2显示文摘在这份报纸,为 m 厚度李重量的 MacWilliams 类型身份在 \mathbbF2 + u\mathbbF2\mathbb 上为线性代码枚举符 { F }_2 + u\mathbb { F }_2 被决定。作为这身份的一个应用程序,作者在 \mathbbF2m + u\mathbbF2m \mathbb 上为线性代码在李重量上获得 MacWilliams 类型身份 { F }_{ 2 ^ m }+ u\mathbb { F }_{ 2 ^ m } 。而且,作者由利用 Krawtchouk 多项式为 m 厚度李重量分布证明两重性。 | Shixin ZHU Yongsheng TANG | 2012 | Journal of Systems Science & Complexity2012，25，1： | 3 |
| 8 | On LCD Negacyclic Codes over Finite Fields显示文摘 | PANG Binbin ZHU Shixin SUN Zhonghua | 2018 | Journal of Systems Science & Complexity2018，31，4： | 3 |
| 9 | (1-uv)-CONSTACYCLIC CODES OVER F_p+uF_p+vF_p+uvF_p显示文摘Constacyclic codes are an important class of linear codes in coding theory.Many optimal linear codes are directly derived from constacyclic codes.In this paper,(1 — uv)-constacyclic codes over the local ring F_p + uF_p + vF_p + uvF_p are studied.It is proved that the image of a(1 — uv)-constacyclic code of length n over F_p + uF_p + vF_p + uvF_p under a Gray map is a distance invariant quasi-cyclic code of index p2 and length p^3n over F_p.Several examples of optimal linear codes over F_p from(1 — uv)-constacyclic codes over F_p + uF_p + vF_p + uvF_p are given. | YU Haifeng ZHU Shixin KAI Xiaoshan | 2014 | Journal of Systems Science & Complexity2014，27，4： | 3 |
| 10 | CYCLIC CODES OVER THE RING Z(_P^2) OF LENGTH p^e显示文摘The study of cyclic codes over rings has generated a lot of public interest.In this paper,we study cyclic codes and their dual codes over the ring Z P2 of length pe,and find a set of generators for these codes.The ranks and minimal generator sets of these codes are studied as well,which play an important role in decoding and determining the distance distribution of codes. | Shi Minjia Zhu Shixin | 2008 | Journal of Electronics(China)2008，25，5： | 3 |
| 11 | Two-Weight Linear Codes and Their Applications in Secret Sharing显示文摘Linear codes with few weighs have many applications in secret sharing.Determining the access structure of the secret sharing scheme based on a linear code is a very difficult problem.We provides a method to construct a class of two-weight torsion codes over finite non-chain ring.We determine the minimal codewords of these torsion codes over the finite non-chain ring.Based on the two-weight codes,we find the access structures of secret sharing schemes. | WANG Yaru LI Fulin ZHU Shixin | 2019 | Chinese Journal of Electronics2019，28，4： | 2 |
| 12 | PERIOD DISTRIBUTION OF CYCLIC CODES OVER F_q + uF_q +···+u^(m-1)F_q显示文摘In this paper, the period distribution of cyclic codes overR = F_q + uF_q +···+u^(m-1)F_q is studied, where um= 0 and q is a prime power. A necessary and sufficient condition for the existence of period of cyclic codes over R is given. The period distributions of cyclic codes over R and their dual codes are determined by employing generator polynomial. The counting formulas of the period distributions of cyclic codes over R and their dual codes are obtained. | Li Ping Zhong Jiawei Zhu Shixin | 2014 | Journal of Electronics(China)2014，31，6： | 2 |
| 13 | Cyclic codes over Fp+uFp +… + uk-1 Fp显示文摘 | Qian Jianfa Zhang Lina Zhu Shixin | | 0，，3： | 1 |
| 14 | (1 + λu)-constacyclic codes over Fp/(u^m)显示文摘 | Kai Xiaoshan Zhu Shixin Li Ping | 2010 | Journal of the Franklin Institute2010，347，： | 1 |
| 15 | (1+u)-Constacydic and cyclic codes over F2+uF2 显示文摘 | Qian Jianfa Zhang Lina Zhu Shixin | 2006 | Appl Math Letters2006，19，8： | 1 |
| 16 | Negacyclic MDS codes over GR (2a ,m)显示文摘 | Zhu Shixin Kai Xiaoshan Li Ping | 2009 | IEEE ISIT2009，，： | 1 |
| 17 | Skew cyclic codes over F4+vF4显示文摘 | XU Xianqi ZHU Shixin | 2011 | Journal of Hefei University of Technology(Natural Science Edition)2011，34，9： | 1 |
| 18 | Skew cyclic codes over Z2+uZ2+u2 Z2显示文摘 | LI Jin ZHU Shixin | 2011 | Journal of Hefei University of Technology(Natural Science Edition)2011，34，11： | 1 |
| 19 | Some results on cyclic codes over F2 +vF2 ]显示文摘 | Zhu Shixin Wang Yu Shi Minjia | 2010 | IEEE Trans Inform Theory2010，56，4： | 1 |
| 20 | DFT for cyclic code overF p +uF p + ··· +u k-1 F p显示文摘 | Jianfa Qian Lina Zhang Shixin Zhu | 2006 | Journal of Applied Mathematics and Computing (-)2006，，1： | 1 |
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