检索结果-南通市图书馆

The Initial-Boundary-Value Problems for the Hirota Equation on the Half-Line

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2020年第1期41卷 117-132页

作者： Lin huang School of Science Hangzhou Dianzi UniversityHangzhou 310018China School of Mathematical Sciences Fudan UniversityShanghai 200433China

An initial boundary-value problem for the Hirota equation on the half-line,00, is analysed by expressing the solution q(x, t) in terms of the solution of a matrix Riemann-Hilbert(RH) problem in the complex k-plane. This RH problem has explicit(x, t) dependence and it involves certain functions of k referred to as the spectral functions. Some of these functions are defined in terms of the initial condition q(x,0) = q0(x), while the remaining spectral functions are defined in terms of the boundary values q(0, t) = g0(t), qx(0, t) = g1(t) and qxx(0, t) = g2(t). The spectral functions satisfy an algebraic global relation which characterizes, say, g2(t) in terms of {q0(x), g0(t), g1(t)}.The spectral functions are not independent, but related by a compatibility condition, the so-called global relation.

关键词： Hirota equation Riemann-Hilbert problem Initial-boundary value problem global relation

When AI meets sustainable 6g

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2025年第1期 4-22页

作者： Xiaohu YOU Yongming huang Cheng ZHANg Jiaheng WANg Hao YIN Hequan WU National Mobile Communications Research Laboratory Southeast University Purple Mountain Laboratories Chinese Academy of Military Science China Information Communication Technologies group

Sixth-generation(6g) networks are anticipated to achieve transformative advancements, characterized by extreme connectivity, deep integration with artificial intelligence(AI) and sensing, and airground integration. The evolution of 6g exhibits two major trends: ubiquitous intelligence and sustainability. The former aims to embed state-of-the-art AI technology into the 6g network, from the physical layers to applications, while the latter emphasizes reducing energy consumption while enhancing network performance to address environmental concerns. Despite the amazing progress in recent years, AI advancements come with substantial increases in data and computational overhead, posing critical challenges for integrating AI into sustainable 6g networks. First, high energy consumption from large datasets and heavyweight AI models contradicts6g's green goals. Second, the precise collection of large datasets, message delivery latency, and inference delays in AI models pose challenges for real-time tasks in 6g. Third, the uninterpretability and unpredictability of AI models complicate meeting the stringent requirements for controllable transmission in dynamic wireless environments. Addressing these challenges and achieving sustainable 6g with ubiquitous intelligence calls for a revolutionary design of 6g architecture and AI frameworks. To this end, this paper introduces a novel and practical methodology for green, real-time, and controllable 6g native intelligence,starting with knowledge graph(Kg) analysis to extract small but critical datasets, followed by the development of distributed lightweight AI models, and the use of digital twins(DTs) to create precise replicas of physical 6g networks. This leads to a pervasive multi-level(PML)-AI framework supported by a task-centric, three-layer 6g architecture. The AI framework operates through non-real-time and real-time cycles, leveraging three key technologies: wireless data Kgs for efficient data management,lightweight AI mode

关键词：

Microstructural designs of plate-type elastic metamaterial and their potential applications: a review

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Smart and Nano Materials 2015年第1期6卷 14-40页

作者： R.Zhu X.N.Liu g.K.Hu F.g.Yuan g.L.huang Department of Mechanical and Aerospace Engineering North Carolina State UniversityRaleighNC 27695USA School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Department of Mechanical and Aerospace Engineering University of MissouriColumbiaMO 65211USA

Elastic metamaterials are of growing interest due to their unique effective properties and wave manipulation *** phononic crystals based on the Bragg scattering mechanism,elastic metamaterials(EMMs)are based on the locally resonant(LR)mechanism and can fully control elastic waves at a subwavelength *** designs of EMMs in plate-like structures have attracted a great deal of *** this paper,the recent advances in the microstructural designs of LRbased EMM plates are *** potential applications in the fields of low frequency guided wave attenuation,wave manipulation and energy trapping at a subwavelength scale,and structural health monitoring are discussed.

关键词： metamaterial composite structural dynamics nondestructive evaluation structural health monitoring

Resistance of the fall armyworm,Spodoptera frugiperda,to transgenic Bacillus thuringiensis Cry1 F corn in the Americas:lessons and implications for Bt corn IRM in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2021年第3期28卷 574-589页

作者： Fangneng huang Department of Entomology Louisiana State University Agricultural CenterBaton RougeLouisianaUSA

The fall armyworm,Spodoptera frugiperda(***),is a major target pest of Bt crops(e.g.,corn,cotton,and soybean)in North and South *** pest has recently invaded Africa and Asia including China and the invasion has placed a great threat to the food security in many countries of these two *** to the extensive use of Bt crops,practical resistance of *** to Cry IF corn(TC 1507)with field control problems has widely occurred in Puerto Rico,Brazil,Argentina,and the mainland United *** data generated from decade-long studies showed that several factors might have contributed to the wide development of the *** factors include(1)limited modes of action of Bt proteins used in Bt crops;(2)cross-resistance among Cryl proteins;(3)use of nonhigh dose Bt crop traits;(4)that the resistance is complete on Bt corn plants;(5)abundant in initial Cry IF resistance alleles;and(6)lack of fitness costs/recessive fitness costs of the *** long-term use of Bt crop technology in the Americas suggests that Bt corn can be an effective tool for controlling *** in *** programs for Bt corn in China should be as simple as possible to be easily adopted by small-scale *** following aspects may be considered in its Bt corn IRM programs:(1)use of only"high dose^traits for both *** and stalk borers;(2)developing and implementing a combined resistance monitoring program;(3)use“gene pyramiding”as a primary IRM strategy;and(4)if possible,Bt corn may not be planted in the areas where *** *** and experience gained from the global long-term use of Bt crops should have values in improving IRM programs in the Americas,as well as for a sustainable use of Bt corn technology in China.

关键词： Bt corn CryIF fall armyworm resistance management

Classification of topological trivial matter with non-trivial defects

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2019年第9期64卷 575-579页

作者： Lokman Tsui Zi-Xiang Li Yen-Ta huang Steven g. Louie Dung-Hai Lee Department of Physics University of California Materials Sciences Division Lawrence Berkeley National Laboratory

In this paper, we apply the K-theory to classify topological trivial fermionic phases which, nonetheless,host symmetry-protected non-trivial defects. An important implication of our work is that the existence of Majorana zero mode in the vortex core is neither a necessary nor a sufficient condition for the superconductor in question being topologically non-trivial.

关键词： Majorana zero mode Symmetry protected topological phase Topological superconductor Topological defect K-theory

Emergence,Mating and Oviposition Behavior of the Chinese Population in Pink Bollworm,Pectinophora gossypiella (Lepidoptera:gelechiidae)

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2013年第4期12卷 653-662页

作者： WU Huai-heng huang Min-song WAN Peng Kris A g Wyckhuys WU Kong-ming State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection Chinese Academy of Agricultural Sciences Institute of Plant Protection and Soil Fertilizer Hubei Academy of Agricultural Sciences International Center for Tropical Agriculture CIAT-Asia

The pink bollworm, Pectinophora gossypiella （Lepidoptera： gelechiidae） is one of the most serious lepidopteran pests of cotton in the world. This pest invaded China at the onset of the 20th century, possibly through repeated introductions from several different locations worldwide. In this paper, we describe different behavioral parameters of this Hubei P. gossypiella strain under laboratory and field conditions. Using an infra-red video recorder, we observed （nocturnal） emergence, flight and mating activities, and oviposition patterns. Moth emergence started from 13：00 and continued up till 23：00. Under laboratory and field conditions, 2-7-d-old moths initiated flight around sunset, peaked 50 rain later and gradually declined until 04：00. Although mating started immediately after darkness （i.e., 20：00）, mating behavior was most intense from 23：00 to 03：40. Oviposition also showed distinct time-related patterns, with approx. 70% eggs laid between 20：00 and 22：00. In the studies of the relationship between flight and oviposition, the duration of flight had an effect on oviposition. The 1-d-old moths flown for 6 and 12 h began oviposition earlier than the unflown ones, and the 6-h flight had no effect on the egg production. However, the longevity of the flown moths was shortened after flight. In addition, the peaks of oviposition for the flown moths were advanced 2-3 d. The age when the moths flied affected the oviposition of adult moths. The earlier the moths started to fly after emergence, the greater the fecundity they had. The average egg production of moths flown for 24 h was less than that of non-flown moths which were of the same age. Both flight and delay in mating could advance the oviposition peak. Our study provides detailed insights in nocturnal activities and the reproductive biology of local P. gossypiella populations, which could be employed to fine-tune current pest management programs in China.

关键词： Pectinophora gossypiella nocturnal activities emergence mating oviposition

The Spectrum and Automorphism group of the Set-Inclusion graph

在线全文

学校读者我要写书评

暂无评论

Algebra Colloquium 2021年第3期28卷 497-506页

作者： Xueyi huang Qiongxiang huang Jianfeng Wang Department of Mathematics East China University of Science and Technology Shanghai 200237China College of Mathematics and Systems Science Xinjiang University UrumqiXinjiang 830046China School of Mathematics and Statistics Shandong University of Technology ZiboShandong 255049China

Let n,k and l be integers with 1≤kgraph g(n,k,l)is the graph whose vertex set consists of all κ-and l-subsets of[n]={1,2,...,n},where two distinct vertices are adjacent if one of them is contai... 详细信息

关键词： set-inclusion graph spectrum automorphism group

Effect of lime application on microbial community in acidic tea orchard soils in comparison with those in wasteland and forest soils

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2010年第8期22卷 1253-1260页

作者： Dong Xue Xiangdong huang Huaiying Yao Changyong huang Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition College of Environmental and Resource Sciences Zhejiang University (Huajiachi Campus) Hangzhou 310029 China Department of Environmental and Chemical Engineering Luoyang Institute of Science and Technology Luoyang 471023 China

Lime application is a conventional technology to control acidification in tea orchard soils. We investigated the effect of lime application on soil microbial community diversity in the soils of three tea orchards, wasteland and forest. The BIOLOg data showed that both the average well color development of all carbon sources and the functional diversity index increased with the liming rate in the tea orchards and the forest, but decreased in the wasteland. The phospholipid fatty acid （PLFA） analysis showed that the structural diversity index of soil microbial community increased with the liming rate in all the tea orchards, the wasteland and the forest. Lime application also increased the soil-bacterial PLFA content in all the soils. Soil fungal and actinomycete PLFAs in the tea orchards showed an increasing trend from 0 to 3.2 g CaCO 3 /kg application and then a decreasing trend from 3.2 to 6.4 g CaCO 3 /kg application. The principal component analysis of BIOLOg and PLFA data suggested that lime application had a significant effect on soil microbial community structure, and land use had a greater effect on soil microbial community structure compared to lime application.

关键词： microbial community diversity phospholipid fatty acid lime tea orchard soil

The World Needs a“Pandamic”Solution for a Pandemic Problem

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2022年第52期4卷 1183-1184页

作者： Jie huang Ole Döring gordon g.Liu School of Public Health and Emergency Management Southern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina Institute for global Health and Development Peking UniversityBeijing MunicipalityChina Institute for Technology Futures Karlsruhe Institute of TechnologyKarlsruheGermany.

Two decades ago,the term“infodemic”was coined right after the Severe Acute Respiratory Syndrome(SARS)emerged(1).The World Health Organization(WHO)defined infodemic as“too much information including false or misleading information in digital and physical environments during a disease outbreak.”While fully realizing the negative impact of misinformation and disinformation during an epidemic,we argue that most epidemic related information was generated not as a result of bad intention,but as a result of haste,confusion and the lack of reliable *** is especially true for coronavirus disease 2019(COVID-19),the emergence of a novel virus and uncertainties surrounding variants and *** a lack of timely scientific evidence,it is reasonable and even recommended for global citizens to debate and voice skepticism on certain *** the past 3 years of the COVID-19 pandemic,there was some degree of infodemic during the first year.

关键词： Acute Panda false