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Efficient identity-based signature over NTRU lattice

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Frontiers of Information Technology & Electronic Engineering 2016年第2期17卷 135-142页

作者： jia XIE Yu-pu HU Jun-tao gao Wen gao School of Telecommunications Engineering Xidian University Xi'an 710071 China The State Key Laboratory of Integrated Services Network Xi 'an 710071 China

Identity-based signature has become an important technique for lightweight authentication as soon as it was proposed in ***,identity-based signature schemes based on the integer factorization problem and discrete logarithm problem were proposed one after ***,the rapid development of quantum computers makes them ***,many efforts have been made to construct identity-based signatures over lattice assumptions against attacks in the quantum ***,their efficiency is not very *** this study,an efficient identity-based signature scheme is presented over the number theory research unit(NTRU) lattice *** new scheme is more efficient than other lattice-and identity-based signature *** new scheme proves to be unforgeable against the adaptively chosen message attack in the random oracle model under the hardness of the γ-shortest vector problem on the NTRU lattice.

关键词： Identity Signature Lattice Number theory research unit (NTRU)

High selectively oxidative bromination of toluene derivatives by the H_2O_2-HBr system

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Chinese Chemical Letters 2011年第4期22卷 382-384页

作者： Jie Ju Yu Jin Li jian Rong gao jian Hong jia liang Han Wei jian Sheng Yi Xia jia The State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of TechnologyHangzhou 310032China

An aqueous solution of hydrogen peroxide and hydrogen bromide illuminated by a 60 W incandescent light bulb serves as a source of bromine *** substituted toluenes（NO2,Cl,Br,H,CH3） were high selectively brominated at the benzyl position for monobromination in CH2C12 at ice water with catalyst *** simple but effective bromination of toluene derivatives with an aqueous H2O2-HBr system is characterized with the use of inexpensive reagents and a lower impact on the environment, which make it a good alternative to the existing bromination methods.

关键词： Oxidative bromination Toluene derivatives H2O2-HBr

Commentary:Indirect action pattern:A remote and cross-organ pharmacological mechanism for drug innovation

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Acta Pharmaceutica Sinica B 2022年第8期12卷 3448-3450页

作者： Yuan gao jia-bo Wang School of Traditional Chinese Medicine Capital Medical UniversityBeijing 100069China

The development of molecular medicine has greatly promoted the research and development (R&D) of innovative drugs. However,drug design and development for those novel targets remains a big challenge with low success rates and high attrition of drug candidates1. The current methodology of new drug R&D is deeply influenced by the idea of allopathic medicine, which directly inhibits biological targets.

关键词： Cross-organ Indirect action pattern Phosphatidic acid Liver toxicity IL-6 Epididymal white adipose tissue

Some embedding theorems for W～(1,p)(Ω, H～n)

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Applied Mathematics(A Journal of Chinese Universities) 2010年第1期25卷 85-92页

作者： jia gao ZHANG Guo-qing College of Science University of Shanghai for Science and Technology Shanghai 200090 China

For the maps on the Heisenberg group target, we prove a Poincare type inequality. Applying this Poincare type inequality, we obtain the corresponding versions of Sobolev and Rellich embedding theorems.

关键词： Heisenberg group HSlder continuity embedding theorem.

Identifying and Quantifying Pixel-Level Uncertainty among Major Satellite Derived Global Land Cover Products

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Journal of Meteorological Research 2020年第4期34卷 806-821页

作者： Hao gao Gensuo jia Yu FU National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081 Key Laboratory of Regional Climate–Environment for Temperate East Asia(RCE-TEA) Chinese Academy of SciencesBeijing 100029 Climate Change Research Center Chinese Academy of SciencesBeijing 100029

Accurate global land cover(GLC), as a key input for scientific communities, is important for a wide variety of applications. In order to understand the current suitability and limitation of GLC products, the discrepancy and pixellevel uncertainty in major GLC products in three epochs are assessed in this study by using an integrated uncertainty index(IUI) that combines the thematic uncertainty and local classification accuracy uncertainty. The results show that the overall spatial agreements(Ao values) between GLC products are lower than 58%, and the total areas of forests are very consistent in major GLC products, but significant differences are found in different forest *** misclassification among different forest classes and mosaic types can account for about 20% of the total disagreements. The mean IUI almost reaches 0.5, and high uncertainty mostly occurs in transition zones and heterogeneous areas across the world. Further efforts are needed to make in the land cover classifications in areas with high uncertainty. Designing a classification scheme for climate models, with explicit definitions of land cover classes in the threshold of common attributes, is urgently needed. Information of the pixel-level uncertainty in major GLC products not only give important implications for the specific application, but also provide a quite important basis for land cover fusion.

关键词： global land cover(GLC) discrepancies thematic similarity local accuracy pixel-level uncertainty

海外学者视角下的中国乡村振兴战略:实施动因与成效

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西北农林科技大学学报（社会科学版） 2025年第1期25卷 44-52页

作者：高小升高嘉悦西北农林科技大学中国化马克思主义海外传播研究中心陕西杨凌712100

实施乡村振兴战略是党中央作出的重大决策部署,受到海外学界的持续关注和研究。海外学者的研究具有极强的实用主义目的,重在剖析中国实施乡村振兴战略的动因,评估乡村振兴战略的实施成效以及展望乡村振兴战略的未来前景。在海外学者看来... 详细信息

实施乡村振兴战略是党中央作出的重大决策部署,受到海外学界的持续关注和研究。海外学者的研究具有极强的实用主义目的,重在剖析中国实施乡村振兴战略的动因,评估乡村振兴战略的实施成效以及展望乡村振兴战略的未来前景。在海外学者看来,新时代中国共产党的使命担当、重塑中国城乡关系和应对复杂多变的国际形势是中国实施乡村振兴战略的主要原因。中国乡村振兴战略的实施不仅提振了新时代中国经济的发展,推动了新时代中国社会的伟大变革,而且极大地助推了新时代中国的文化传承。归因于世界农业发展的日益数字化趋势等因素,中国乡村振兴战略的未来发展有着前所未有的机遇,但也需要解决推进乡村振兴过程中产生的环境问题,需要平衡如土地用途调整与保障粮食安全的关系。总体来看,海外学者对中国乡村振兴战略的认知以肯定为主,并且从国内和国际两个层面提出了进一步推进乡村振兴战略的建议。然而受多种因素的影响,海外学者对乡村振兴战略实施过程中出台的部分政策的意图仍存在一定的误解和错误认知,需要在对外传播中主动予以回应、批驳和积极引导。

关键词：海外学者乡村振兴战略提出动因实施成效

Discrete Artificial Bee Colony Algorithm for Lot-streaming Flowshop with Total Flowtime Minimization

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 990-1000页

作者： SANG Hongyan gao liang PAN Quanke State Key Lab. of Digital Manufacturing Equipment & Technology Huazhong University of Science and Technology Wuhan 430074 China School of Mathematics Science Liaocheng University Liaocheng 252059 China School of Computer Science Liaocheng University Liaocheng 252059 China

Unlike a traditional flowshop problem where a job is assumed to be indivisible, in the lot-streaming flowshop problem, a job is allowed to overlap its operations between successive machines by splitting it into a number of smaller sub-lots and moving the completed portion of the sub-lots to downstream machine. In this way, the production is accelerated. This paper presents a discrete artificial bee colony （DABC） algorithm for a lot-streaming flowshop scheduling problem with total flowtime criterion. Unlike the basic ABC algorithm, the proposed DABC algorithm represents a solution as a discrete job permutation. An efficient initialization scheme based on the extended Nawaz-Enscore-Ham heuristic is utilized to produce an initial population with a certain level of quality and diversity. Employed and onlooker bees generate new solutions in their neighborhood, whereas scout bees generate new solutions by performing insert operator and swap operator to the best solution found so far. Moreover, a simple but effective local search is embedded in the algorithm to enhance local exploitation capability. A comparative experiment is carried out with the existing discrete particle swarm optimization, hybrid genetic algorithm, threshold accepting, simulated annealing and ant colony optimization algorithms based on a total of 160 randomly generated instances. The experimental results show that the proposed DABC algorithm is quite effective for the lot-streaming flowshop with total flowtime criterion in terms of searching quality, robustness and effectiveness. This research provides the references to the optimization research on lot-streaming flowshop.

关键词： lot-streaming flowshop scheduling artificial bee colony algorithm total flowtime

A 3-DOF Pseudo-Rigid-Body Model for Tension-Based Compliant Bistable Mechanisms

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Chinese Journal of Mechanical Engineering 2010年第2期23卷 149-153页

作者： CHEN Guimin gao Hongwei jia jianyuan School of Mechatronics Xidian University Xi ＇an 710071 China

Compliant bistable mechanisms, devices with two distinct stable equilibrium positions, are used in a variety of applications, such as switches, clasps, and valves. Many kinds of compliant bistable mechanisms were proposed and studied during the past decade. Among them, tension-based compliant bistable mechanisms, that incorporate tension pivots as their flexible members, feature in short travel distance and low power consuming. So far, the design of this kind of bistable mechanisms is done using finite element method through trial and error, thus is time-consuming. By treating the tension pivots as fixed-guided segments and their elongation as a spring, we developed a novel three degree-of-freedom （3-DOF） pseudo-rigid-body model （PRBM） for this kind of bistable mechanisms. The principle of virtual work is used to derive the force-deflection relationship of the PRBM model. The comparison between the PRBM results and the experimental results of the force-deflection characteristics shows that the PRBM can predict not only the bistable behavior of the tension-based bistable mechanisms, but also their soft spring-like post-bistable behavior and the spring-like force-deflection characteristics when pulling in the reverse direction from the as-fabricated position, which is called reverse behavior. The 3-DOF PRBM can be used to design and identify tension-based bistable mechanisms. Using the PRBM instead of the trial-and-error method can greatly reduce the development time of this kind of bistable mechanisms.

关键词： compliant bistable mechanism pseudo-rigid-body model tension pivot

Community diversity and distribution of ammonia-oxidizing archaea in marsh wetlands in the black soil zone in North-east China

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Frontiers of Environmental Science & Engineering 2019年第4期13卷 123-138页

作者： Chunhong Chen Hong liang Dawen gao State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China School of Environment Harbin Institute of TechnologyHarbin 150090China

Since its first detection, ammonia-oxidizing archaea (AOA) have been proven to be ubiquitous in aquatic and terrestrial ecosystems. In this study, two freshwater marsh wetlands- the Honghe wetland and Qixinghe wetland - in the black soil zone in North-east China were chosen to investigate the AOA community diversity and distribution in wetland soils with different vegetation and depth. In the Honghe wetland, two sampling locations were chosen as the dominant plant transited from Deyeuxia to Carex. In the Qixinghe wetland, one sample location that was dominated by Deyeuxia was chosen. Samples of each location were collected from three different depths, and Illumina MiSeq platform was used to generate the AOA amoA gene archive. The results showed that the AOA amoA genes in the soils of the two wetlands were affiliated with three lineages: Nitrososphaera, Nitrosotalea, and Nitrosopumilus clusters. The different dominant status of these AOA lineages indicated their differences in adapting to acidic habitat, oxygenic/hypoxic alternation, organic matter, and other environmental factors, suggesting high diversity among AOA in marsh soils. The main driver of the AOA community was pH, along with organic carbon and ammonium nitrogen, which also played an important role combined with many other environmental factors. Thus, soil physiochemical characteristics, rather than vegetation, were the main cause of AOA community diversity in the wetlands in the black soil zone in China.

关键词： Ammonia-oxidizing archaea amoA gene Freshwater marsh Diversity Distribution