期刊:
Advances in Intelligent Systems and Computing,2020年905:876-884 ISSN:2194-5357
通讯作者:
Jiao, G.
作者机构:
[Li L.; Zou Y.] College of Computer Science and Technology, Hengyang Normal University, Hengyang, Hunan 421002, China;Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang, Hunan 421002, China;[Jiao G.] College of Computer Science and Technology, Hengyang Normal University, Hengyang, Hunan 421002, China, Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang, Hunan 421002, China
通讯机构:
[Jiao, G.] C;College of Computer Science and Technology, China
会议名称:
8th International Conference on Computer Engineering and Networks, CENet 2018
作者机构:
[Liang X.; Li L.] School of Computer Science and Technology, Hengyang Normal University, Hengyang, Hunan 421002, China;School of Information Science and Engineering, Central South University, Changsha, Hunan 410083, China;Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang, 421002, China;[Deng H.] School of Computer Science and Technology, Hengyang Normal University, Hengyang, Hunan 421002, China, School of Information Science and Engineering, Central South University, Changsha, Hunan 410083, China, Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang, 421002, China
会议名称:
8th International Conference on Computer Engineering and Networks, CENet 2018
会议时间:
17 August 2018 through 19 August 2018
关键词:
Anti-collision algorithm;Highest bit of collision;Hybrid query tree algorithm;Second highest bit of collision
期刊:
Lecture Notes in Computer Science,2019年11640:121-128 ISSN:0302-9743
通讯作者:
Fu, Bin
作者机构:
[Fu, Bin; Chen, Zhixiang] Univ Texas Rio Grande Valley, Dept Comp Sci, Edinburg, TX 78539 USA.;[Feng, Qilong; Wang, Jianxin] Cent Southern Univ, Sch Informat, Changsha, Peoples R China.;[Lin, Mugang] Hengyang Normal Univ, Sch Comp Sci & Technol, Hengyang, Peoples R China.
通讯机构:
[Fu, Bin] U;Univ Texas Rio Grande Valley, Dept Comp Sci, Edinburg, TX 78539 USA.
会议名称:
13th International Conference on Algorithmic Aspects in Information and Management (AAIM)
会议时间:
AUG 06-08, 2019
会议地点:
Beijing, PEOPLES R CHINA
会议主办单位:
[Chen, Zhixiang;Fu, Bin] Univ Texas Rio Grande Valley, Dept Comp Sci, Edinburg, TX 78539 USA.^[Feng, Qilong;Wang, Jianxin] Cent Southern Univ, Sch Informat, Changsha, Peoples R China.^[Lin, Mugang] Hengyang Normal Univ, Sch Comp Sci & Technol, Hengyang, Peoples R China.
会议论文集名称:
Lecture Notes in Computer Science
摘要:
In this paper, we develop an exponential time approximation scheme for the traveling salesman problem (TSP) on undirected graphs. If the weight of each edge is a nonnegative real number, then there is an algorithm to give an \((1+\epsilon )\) approximation for the TSP problem in \(O({1\over \epsilon }\cdot 1.66^n)\) and a polynomial space. It is in contrast to Golovnen’s approximation scheme for TSP on directed graphs with \(\mathrm{O}({1\over \epsilon }\cdot 2^n)\) time. We also show that there is no \(2^{o(n)}\) time constant factor approximation for the TSP problem under Exponential Time Hypothesis in complexity theory.
摘要:
Spin-controlled vortex generation is a manifestation of the spin-orbit interaction (SOI) of light, which has been extensively studied in Pancharatnam-Berry geometric phase elements in recent years. The SOI under the normal incidence of a light beam at a sharp interface, also shown by a spin-dependent vortex, has attracted little attention, except for a few exceptions. Here, we establish a Fresnel Jones matrix to fully describe the dynamics of beam reflection and refraction at sharp interfaces under normal incidence. It is pointed out that the vortex phase originates from the topological structure of the beam itself and is essentially a spin-redirection Berry phase. Although the geometric phase in Pancharatnam-Berry elements comes from the anisotropy of the external material, which shows a fundamental difference, they are the same in form. We then give a comparative study of the two kinds of SOI, and reveal the intrinsic connection and difference between them. Our research not only establishes a unified framework to describe the two SOIs, but also offers a new perspective for studying the SOIs in other physics.
期刊:
IOP Conference Series: Earth and Environmental Science,2019年237(2):022020- ISSN:1755-1307
通讯作者:
Liu, Jian;Yao, Jun
作者机构:
[Liu, Xing; Liu, Jian; Zeng, Rongying; Yi, Zhengji] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Liu, Xing; Liu, Jian; Zeng, Rongying; Yi, Zhengji] Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Yao, Jun] China Univ Geosci Beijing, Sino Hungarian Joint Lab Environm Sci & Hlth, Sch Water Resource & Environm Engn, 29 Xueyuan Rd, Beijing 100083, Peoples R China.
通讯机构:
[Liu, Jian] H;[Yao, Jun] C;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;China Univ Geosci Beijing, Sino Hungarian Joint Lab Environm Sci & Hlth, Sch Water Resource & Environm Engn, 29 Xueyuan Rd, Beijing 100083, Peoples R China.
会议名称:
4th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE)
会议时间:
DEC 07-09, 2018
会议地点:
Chengdu, PEOPLES R CHINA
会议主办单位:
[Yi, Zhengji;Liu, Xing;Liu, Jian;Zeng, Rongying] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.^[Yi, Zhengji;Liu, Xing;Liu, Jian;Zeng, Rongying] Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.^[Yao, Jun] China Univ Geosci Beijing, Sino Hungarian Joint Lab Environm Sci & Hlth, Sch Water Resource & Environm Engn, 29 Xueyuan Rd, Beijing 100083, Peoples R China.
会议论文集名称:
IOP Conference Series-Earth and Environmental Science
摘要:
The aim of the present research is to study the applicability of using dead Hydrilla verticillata powder to remove lead(II) ion from aqueous solution by means of batch experiments. Influence of oscillation time, solution pH value, and initial Pb(II) level upon its biosorption was examined in some detail. The result indicated that Pb(II) adsorption is highly pH dependent. The pH range from 5.0 to 5.5 is most favorable for Pb(II) removal with ca. 90% of Pb(II) removed. The adsorption data was in agreement with pseudo-first-order kinetics with an adsorption equilibrium time of 50 min. Isotherm data can be described by the Langmuir equation with a maximum adsorption capacity of 157.23 mg/g. These findings suggest that H. verticillata could be a promising biosorbent for Pb(II) removal.
会议论文集名称:
IOP Conference Series-Earth and Environmental Science
摘要:
The purpose of this investigation was to explore the feasibility of utilizing heat inactivated (killed) Elodea canadensis to eliminate divalent lead ions from water solution via batch tests. The Pb(II) biosorption features of E. canadensis biomass were examined with regard to adsorption time, solution pH value and Pb(II) concentration. Our experimental result suggested that the lead biosorption depended highly on medium pH. A pH of 5.0 is most beneficial to lead removal. The biosorption data agreed with pseudo-second-order kinetic model with an adsorption equilibrium time of 60 minutes. Isotherm data agreed with Langmuir isotherm equation with 21.36 mg/g of maximum biosorption capacity. The results suggested that E. canadensis is an inexpensive and efficient sorbent for the elimination of Pb(II) from wastewater.
摘要:
In high-power laser systems for inertial confinement fusion, hot images may be intense enough to damage expensive optical components. Basing on split-step fast-Fourier-transform algorithm, the intensity and location of hot images of a spectrally dispersed sinusoidal phase modulated laser beam is numerically investigated. It is found that, the time-average intensity of hot image firstly decreases monotonically with the modulation depth and eventually reaches a certain minimum, then increases slowly and reaches a saturated value; in addition, with the modulation frequency and the grating dispersion coefficient increasing, the time-average intensity of hot image decreases generally; while the location of hot image always does not change. Finally, the influence of the distance from the obscuration to the nonlinear optical element on the suppression effect of spectral dispersion of sinusoidal phase modulated light on formation of hot images is discussed. The result is helpful to appropriately choose parameters of the spectrally dispersed sinusoidal phase modulated light to minimize the threat of optical damage of hot image and improve the performance of high- power laser system.