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SUSTAINABLE LAND USE PLANNING BASED ON ECOLOGICAL HEALTH——Case Study of Beiwenquan Town, Chongqing, China

Chinese Geographical Science 2005年第2期15卷 137-144页

作者： shaojing-an weichao-fu xiede-ti CollegeofResourceandEnvironment SouthwestAgriculturalUniversityChongqing400716P.R.China／／ChongqingKeyLaboratoryofDigitalAgricultureChongqing400716P.R.China

This paper, taking Beiwenquan Town of Beibei, Chongqing as an example, assessed the impacts of land use on ecological health by comprehensive index method, and discussed methodological system of sustainable land use planning based on ecological health. Results indicated that: 1) From 1992 to 2002, land use changes focused on 12 patterns with the total conversion area of 92.11%, which were related to cultivated land, residential and industrial-mining area, and orchard land. Urbanization and economic reconstruction were the leading driving forces. 2) There was obvious difference of the areas of ecotypes driven by land use change in wide valley and mild slope between 1992 and 2002, while there were little or no difference in steep slope and very steep slope. 3) Both of the conditions of ecological health in 1992 and 2002 were sound, and the ecotypes focused on the types of health and sub-health. But, health ecosystem in 1992, with an area of 764.64ha, accounting for 38.51% of the total evaluation area, was better than that in 2002, with an area of 636.10ha, accounting for 34.19% of the total evaluation area. 4) The ecotypes involved into different ranges have already degenerated, due to humankind’s disturbance, while the conditions of ecological health in the same ranges in 1992, regardless of stability and reconstruction, were better than that in 2002. 5) The planning scenario based on ecological health was accorded with the practice condition of Beiwenquan Town: 388.29ha of cultivated land could meet the Beiwenquan demand of food and byproduct; 1045.26ha of forest land area, the Beiwenquan demand of ecological health; and 1004.73ha of the residential and industrial-mining area, the Beiwenquan building demand. 6) Sustainable land use planning based on ecological health had higher useful value, because it not only stood to ecological theory, but also satisfied the developmental demand of society and economy.

关键词： ecological health land use ecological evaluation land supply and demand sustainable land use planning

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Response of CH_4 emission of paddy fields to land management practices at a microcosmic cultivation scale in China

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Journal of Environmental Sciences 2005年第4期17卷 691-698页

作者： SHAOJiang-an HUANGXue-xia GAOMing weichao-fu xiede-ti CAIZu-cong CollegeofResourceandEnvironment SouthwestAgriculturalUniversityChongqing400716China／／ChongqingKeyLaboratoryofDigitalAgricultureChongqing400716China InstituteofSoilScience ChineseAcademyofSciencesNanjing210008China

The terrestrial ecosystem may be either a source or a sink of CH_4 in rice paddies, depending, to a great extent, on the change of ecosystem types and land use patterns. CH_4 emission fluxes from paddy fields under 4 cultivation patterns (conventional plain culture of rice(T1), no-tillage and ridge culture of rice(T2), no-tillage and ridge culture of rice and wheat (T3), and rice-wheat rotation(T4)) were measured with the closed chamber technique in 1996 and 1998 in Chongqing, China. The results showed that differences existed in CH_4 emission from paddy fields under these land management practices. In 1996 and 1998, CH_4 emission was 71 48% and 78 82%(T2), 65 93% and 57 18%(T3), and 61 53% and 34 22%(T4) of that in T1 during the rice growing season. During the non-rice growing season, CH_4 emission from rice fields was 76 23% in T2 and 38 69% in T1 The accumulated annual CH_4 emission in T2, T3 and T4 in 1996 decreased by 33 53%, 63 30% and 65 73%, respectively, as compared with that in T1 In 1998, the accumulated annual CH_4 emission in T1, T2, T3 and T4 was 116 96 g/m^2, 68 44 g/m^2, 19 70 g/m^2 and 11 80 g/m^2, respectively. Changes in soil physical and chemical properties, in thermal and moisture conditions in the soil and in rice plant growth induced by different land use patterns were the dominant causes for the difference in CH_4 emission observed. The relative contribution of various influencing factors to CH_4 emission from paddy fields differed significantly under different land use patterns. However, the general trend was that chlorophyll content in rice leaves, air temperature and temperature at the 5 cm soil layer play a major role in CH_4 emission from paddy fields and the effects of illumination, relative humidity and water layer depth in the paddy field and CH_4 concentration in the crop canopy were relatively non-significant. Such conservative land use patterns as no-tillage and ridge culture of rice with or without rotation wit

关键词： land use pattern microcosmic cultivation scale fluxes of CH_4 emission paddy field

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Sequential dual-locking strategy using photoactivated Pt(Ⅳ)-based metallo-nano prodrug for enhanced chemotherapy and photodynamic efficacy by triggering ferroptosis and macrophage polarization

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Acta Pharmaceutica Sinica B 2024年第7期14卷 3251-3265页

作者： Jun Li Qiang Zhang Hao Yang Wenli Lu Yulong fu Yingcai Xiong Xuan Wang tianming Lu Yanlin Xin Zejuan Xie weichao Chen Guoqiang Wang Yuanyuan Guo Ruogu Qi School of Medicine Nanjing University of Chinese MedicineNanjing 210023China Key Laboratory of Mesoscopic Chemistry of Ministry of Education Institute of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Laboratory for Manufacturing Low Carbon and functionalized Textiles College of Textiles&ClothingQingdao UniversityQingdao 266071China

Selective activation of Pt(Ⅳ)prodrugs within tumors has emerged as a promising strategy in tumor *** progress has been made with photo-and ultrasound-activated Pt(Ⅳ)prodrugs,concerns remain over the non-specific activation of photosensitizers(PS)and the potential for phototoxicity and chemical *** this study,a sequential dual-locked Pt(Ⅳ)nano-prodrug that can be activated by both the acidic tumor microenvironment and light was *** Pt(Ⅳ)prodrug was prepared by conjugating PS-locked Pt(Ⅳ)to a polymeric core,which was then chelated with metallo iron to lock its photoactivity and form a metallo-nano *** acidic tumor microenvironment conditions,the metallo-nano prodrug undergoes dissociation of iron,triggering a reduction process in oxaliplatin under light irradiation,resulting in the activation of both chemotherapy and photodynamic therapy(PDT).Additionally,the prodrug could induce metallo-triggered ferroptosis and polarization of tumorassociated macrophages(TAM),thereby enhancing tumor *** dual-lock strategy employed in a nanoparticle delivery system represents an expansion in the application of platinum-based anticancer drugs,making it a promising new direction in cancer treatment.

关键词： Dual-locking Pt(Ⅳ)reduction Chemotherapy Photodynamic therapy Ferroptosis Macrophage polarization Medicinal inorganic chemistry Metals in medicine

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A Scheduling Optimization Technique Based on Reuse in Spark to Defend Against APT Attack

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Tsinghua Science and Technology 2018年第5期23卷 550-560页

作者： Jianchao Tang Ming Xu shaojing fu Kai Huang College of Computer National University of Defense Technology Changsha 410073 China Sate Key Laboratory of Cryptology Beijing 100878 China

Advanced Persistent Threat （APT） attack, an attack option in recent years, poses serious threats to the security of governments and enterprises data due to its advanced and persistent attacking characteristics. To address this issue, a security policy of big data analysis has been proposed based on the analysis of log data of servers and terminals in Spark. However, in practical applications, Spark cannot suitably analyze very huge amounts of log data. To address this problem, we propose a scheduling optimization technique based on the reuse of datasets to improve Spark performance. In this technique, we define and formulate the reuse degree of Directed Acyclic Graphs （DAGs） in Spark based on Resilient Distributed Datasets （RDDs）. Then, we define a global optimization function to obtain the optimal DAG sequence, that is, the sequence with the least execution time. To implement the global optimization function, we further propose a novel cost optimization algorithm based on the traditional Genetic Algorithm （GA）. Our experiments demonstrate that this scheduling optimization technique in Spark can greatly decrease the time overhead of analyzing log data for detecting APT attacks.

关键词： Spark Advanced Persistent Threat (APT) schedule reuse Resilient Distributed Dataset (RDD) Directed Acyclic Graph (DAG) Genetic Algorithm (GA)

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Practical privacy-preserving compressed sensing image recovery in the cloud

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Science China(Information Sciences) 2017年第9期60卷 277-285页

作者： Kai HUANG Ming XU shaojing fu Dongsheng WANG College of Computer National University of Defense Technology State Key Laboratory of Cryptology

Imaging technology plays a significant role in various fields such as astronomy,monitoring,and medical *** traditional Shannon/Nyquist sampling theorem specifies that one must sample at least two times faster than the signal bandwidth to avoid loss of information when capturing an *** makes compression a necessity prior to storage or transmission[1]and may be

关键词： OMP Practical privacy-preserving compressed sensing image recovery in the cloud

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A better bound for implicit factorization problem with shared middle bits

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Science China(Information Sciences) 2018年第3期61卷 108-117页

作者： Shixiong WANG Longjiang QU Chao LI shaojing fu College of Computer National University of Defense Technology State Key Laboratory of Cryptology College of Science National University of Defense Technology

This paper presents our investigation of the implicit factorization problem, where unknown prime factors of two RSA moduli share a certain number of middle bits. The problem is described as follows. Let N;= p;q;, N;=p;q;be two different n-bit RSA moduli, where q;, q;are both αn-bit prime *** that p;, p;share tn bits at positions from t;n to t;n =（t;+ t）n. Then this problem focuses on the condition about t, α to factor N;, N;efficiently. At PKC 2010, Faug`ere et al. showed that N;, N;can be factored when t > 4α. Subsequently, in 2015, Peng et al. improved this bound to t > 4α-3α;. In this paper,we directly apply Coppersmith’s method to the implicit factorization problem with shared middle bits, and a better bound t > 4α-4α;is obtained. The correctness of our approach is verified by experiments.

关键词： RSA implicit factorization problem middle bits lattice Coppersmith’s method

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The Existence of a Class of Balanced Multi-output Rotation Symmetric Boolean functions

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Chinese Journal of Electronics 2018年第5期27卷 995-1001页

作者： DU Jiao fu shaojing QU Longjiang LI Chao PANG Shanqi College of Mathematics and Information Science Henan Normal University Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control Henan Normal University College of Computer Science National University of Defense Technology College of Liberal Arts and Science National University of Defense Technology

A new characterization of balanced rotation symmetric（n, m）-functions is presented. Based on the characterization, the nonexistence of balanced rotation symmetric（p;, m）-functions is determined, where p is an odd prime and m ≥ 2. And there exist balanced rotation symmetric（2;, m）-functions for 2 ≤ m ≤ 2;-r. With the help of these results, we also prove that there exist rotation symmetric resilient（2;, m）-functions for 2 ≤ m ≤ 2;-r-1.

关键词： Cryptography Rotation symmetric Orbit matrix Correlation immune Resilient functions

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Construction of even-variable rotation symmetric Boolean functions with maximum algebraic immunity

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Science China(Information Sciences) 2013年第3期56卷 60-68页

作者： fu shaojing LI Chao MATSUURA Kanta QU LongJiang Department of Mathematics and System Science National University of Defense Technology Institute of Industrial Science University of TokyoTokyo 153-8505Japan State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences

Rotation symmetric Boolean functions(RSBFs) have been used as components of different *** this paper,we investigate n-variable(n even and n≥12) RSBFs to achieve maximum algebraic immunity(AI),and provide a construction of RSBFs with maximum AI and *** functions have higher nonlinearity than the previously known nonlinearity of RSBFs with maximum *** also prove that our construction provides high algebraic degree in some case.

关键词： Boolean function rotation symmetry algebraic immunity nonlinearity

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A lower dimension lattice attack on NTRU

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Science China(Information Sciences) 2018年第5期61卷 329-331页

作者： Zhichao YANG shaojing fu Longjiang QU Chao LI College of Computer National University of Defense Technology State Key Laboratory of Cryptology College of Science National University of Defense Technology

Dear editor,Because of reasonably short length,easily created keys,high speed,low memory requirements and potential resistance to quantum attack,NTRU becomes one of the most popular public-key encryption systems and has drawn considerable *** by[1–9],we devote to constructing a class of lower dimension lattices,called the IN-Lattice,and proposing a new lattice attack on NTRU cryptosystem.

关键词： A lower dimension lattice attack on NTRU

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New constructions of q-variable 1-resilient rotation symmetric functions over Fp

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Science China(Information Sciences) 2016年第7期59卷 240-242页

作者： Jiao DU shaojing fu Longjiang QU Chao LI Shanqi PANG College of Science National University of Defense Technology School of Mathematics and Information Science Henan Normal University Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control Henan Normal University College of Computer Science National University of Defense Technology

Dear editor,Motivated by Refs.[1–10],we devote to constructing a class of q-variable 1-resilient rotation symmetric functions（RSFs）over the finite field F;={0,1,...,p-1}in this *** this letter,let p and q be differ... 详细信息

关键词： over New constructions of q-variable 1-resilient rotation symmetric functions over F_p

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