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1672. A New quantum particle swarm optimization algorithm with local attracting
- Creator:
- Shao, D., Hu, S., and Fei, Y.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- quantum particle swarm optimatization, quantum angle, and local attractor
- Language:
- English
- Description:
- This paper proposes a new quantum particle swarm optimization algorithm with local attracting (LAQPSO), which is based on quantum-inspired evolutionary algorithm (QEA) and particle swarm optimization algorithm (PSO). In the proposed LAQPSO, a novel quantum bit expression mechanism called quantum angle is employed to encode the solution onto particle, and a new local attractor is proposed to determine the rotation angle of quantum rotation gate automatically. During the process of seeking the global solution, the magnitude of rotation angle is adjusted by an important parameter called contraction coefficient, which can quantitatively determine the tradeoff between exploration ability and exploitation ability. The simulation results for different contraction coeffcients are helpful for selecting the key parameter. A set of benchmark functions are used to evaluate the performance of LAQPSO, QEA and QBPSO, and the results show that the proposed algorithm has a fast convergence rate and can effectively avoid premature convergence.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1673. A new R package and web application for detecting bilateral asymmetry in parasitic infections
- Creator:
- Wayland, Matthew T and Chubb, James C
- Format:
- print, počítač, and online zdroj
- Type:
- model:article and TEXT
- Subject:
- motolice, ryby, software, statistická analýza, Trematoda, fishes, statistical analysis, bilateral asymmetry, Diplostomum, Gymnocephalus cernua, ruffe, 2, and 59
- Language:
- English
- Description:
- When parasites invade paired structures of their host non-randomly, the resulting asymmetry may have both pathological and ecological significance. To facilitate the detection and visualisation of asymmetric infections we have developed a free software tool, Analysis of Symmetry of Parasitic Infections (ASPI). This tool has been implemented as an R package (https://cran.r-project.org/package=aspi) and a web application (https://wayland.shinyapps.io/aspi). ASPI can detect both consistent bias towards one side, and inconsistent bias in which the left side is favoured in some hosts and the right in others. Application of ASPI is demonstrated using previously unpublished data on the distribution of metacercariae of species of Diplostomum von Nordmann, 1832 in the eyes of ruffe Gymnocephalus cernua (Linnaeus). Invasion of the lenses appeared to be random, with the proportion of metacercariae in the left and right lenses showing the pattern expected by chance. However, analysis of counts of metacercariae from the humors, choroid and retina revealed asymmetry between eyes in 38% of host fish., Matthew T. Wayland, James C. Chubb., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1674. A new regular multiplier embedding
- Creator:
- Bouza Allende, Gemayqzel and Guddat, Jürgen
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Jongen-Jonker-Twilt regularity, multipliers method, and embedding
- Language:
- English
- Description:
- Embedding approaches can be used for solving non linear programs \emph{P}. The idea is to define a one-parametric problem such that for some value of the parameter the corresponding problem is equivalent to \emph{P}. A particular case is the multipliers embedding, where the solutions of the corresponding parametric problem can be interpreted as the points computed by the multipliers method on \emph{P}. However, in the known cases, either path-following methods can not be applied or the necessary conditions for its convergence are fulfilled under very restrictive hypothesis. In this paper, we present a new multipliers embedding such that the objective function and the constraints of P(t) are C3 differentiable functions. We prove that the parametric problem satisfies the \emph{JJT}-regularity generically, a necessary condition for the success of the path-following method.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1675. A new small-scale experimental device for testing backward erosion piping
- Creator:
- Petrula, Lubomír and Říha, Jaromír
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- backward erosion piping, seepage, experimental research, and critical hydraulic gradient
- Language:
- Slovak
- Description:
- Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory testing of backward erosion progression was developed and tested. The device consists of a plexiglass prism at which the seepage path has been predefined. The prism was equipped with an inflow consisting of gravel separated from tested sand by a strainer. The hydraulic gradient along the seepage pipe was observed by a set of piezometers and pressure cells, and the seepage discharge was measured volumetrically. The transported sediment was trapped in a vertical cone located downstream from the device. The progression of the seepage path, the piezometric heads and the trapped material was observed by two synchronous cameras. 15 trial tests have been carried out to date, and from these, the interim results are presented.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1676. A New Sparse Low-rank Matrix Decomposition Method and its Application on Train Passenger Abnormal Action Identification
- Creator:
- Zhang , Y., Cai , G., Sun, J., Wang, Y., and Chen , J.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- sparse, low-rank matrix, alternative algorithms, SCAD, and abnormal action identification
- Language:
- English
- Description:
- In the article a new sparse low-rank matrix decomposition model is proposed based on the smoothly clipped absolute deviation (SCAD) penalty. In order to overcome the computational hurdle we generalize the alternating direction method of multipliers (ADMM) algorithm to develop an alternative algorithm to solve the model. The algorithm we designed alternatively renew the sparse matrix and low-rank matrix in terms of the closed form of SCAD penalty. Thus, the algorithm reduces the computational complexity while at the same time to keep the computational accuracy. A series of simulations have been designed to demonstrate the performances of the algorithm with comparing with the Augmented Lagrange Multiplier (ALM) algorithm. Ultimately, we apply the model to an on- board video background modeling problem. According to model the on-board video background, we can separate the video background and passenger's actions. Thus, the model can help us to identify the abnormal action of train passengers. The experiments show the background matrix we estimated is not only sparser, but the computational efficiency is also improved.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1677. A new species group and five new species of the genus Pavania (Acari: Dolichocybidae) associated with insects, with notes on leg chaetotaxy and the distribution of genera
- Creator:
- Hajiqanbar, Hamidreza and Khaustov, Alexnder
- Type:
- article, model:article, and TEXT
- Subject:
- Acari, Prostigmata, Heterostigmata, Dolichocybidae, Povania, taxonomy, new species, chaetotaxy, Coleoptera, Scarabaeidae, Carabidae, and Iran
- Language:
- English
- Description:
- A new species group and five new species of mites of the genus Pavania Lombardini, 1949 belonging to the family Dolichocybidae (Acari: Heterostigmata) are described from Iran. Pavania gymnopleuri Hajiqanbar & Khaustov sp. n., P. sabzevarensis Hajiqanbar & Khaustov sp. n. and P. onthophagi Hajiqanbar & Khaustov sp. n., represent a new gymnopleuri species group. Two new species are also described in the fusiformis group: P. kamalii Hajiqanbar & Khaustov sp. n. and P. elongata Hajiqanbar & Khaustov sp. n. All new species are associated with scarabaeid and carabid beetles (Coleoptera: Scarabaeidae, Carabidae). This is the first record of the family Dolichocybidae from Iran. The leg setation and geographic distribution of all genera of this family are discussed and keys to genera and species of the genus Pavania are provided.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
1678. A new species of Acanthochondria (Copepoda: Chondracanthidae) parasitizing the flounder Xystreurys rasile (Pleuronectiformes: Paralichthyidae) from Argentina
- Creator:
- Alarcos, Ana Julia and Timi, Juan Tomás
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parasitic copepod, Acanthochondria sagitta, flounder, Xystreurys rasile, and Argentina
- Language:
- English
- Description:
- A new copepod species, Acanthochondria sagitta sp. n., is described based on specimens collected from the flounder Xystreurys rasile (Jordan) (Pleuronectiformes, Paralichthyidae), caught in the coastal waters off Necochea, Buenos Aires Province, Argentina. The new species differs from its congeners by the following combination of characters: presence of three pairs of cephalic outgrowths; the triangular shape of the trunk with diverging postero-lateral processes; leg 2 of an intermediate shape between Types C and D, which projects laterally from the trunk, and Type B-V antennule bearing two proximal processes (one ventral and one dorsal) on the swollen basal portion.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1679. A new species of Anchistrotos (Copepoda: Taeniacanthidae) from hilsa shad, Tenualosa ilisha (Actinopterygii: Clupeidae), off Iraq
- Creator:
- Maran, B. A. Venmathi, Moon, Seong Yong, and Adday, Thamir Katea
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- taxonomy, fish, parasite, gills, Anchistrotos, maxilliped, and whip-like setae
- Language:
- English
- Description:
- A new species of parasitic copepod Anchistrotos tangi sp. n. (Cyclopoida: Taeniacanthidae) is described based on adult female specimens collected from the gills of hilsa shad, Tenualosa ilisha (Hamilton, 1822) (Actinopterygii: Clupeidae) captured off Iraq. The new species differs from its congeners by having the following combination of characters in the adult female: 1) the rostral area sclerotised; 2) the presence of row of spinules on the proximal and distal margins of the anal somite; 3) the maxilliped claw with 2 long whip-like setae just crossing the distal edge of claw with serrated terminal margin; and 4) the leg 5 ornamented with patched spinules distally. This is the ninth nominal species of Anchistrotos Brian, 1906.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
1680. A new species of Australotaenia (Cestoda: Proteocephalidea) from a snake in Cambodia: host switching or postcyclic parasitism in a distant region?
- Creator:
- Chambrier, Alain de and Scholz, Tomáš
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- taxonomy, zoogeography, tapeworms, helminths, Reptilia, South East Asia, and Indomalayan Region
- Language:
- English
- Description:
- Australotaenia de Chambrier et de Chambrier, 2010 has been proposed to accommodate two species of proteocephalidean cestodes from hylid frogs (Litoria spp.) in Australia. Recently, apparently congeneric cestode, for which the name A. bunthangi sp. n. is proposed, was found in the homalopsid snake Enhydris enhydris (Schneider) (Serpentes: Homalopsidae) from South-East Asia (Cambodia). This finding indicates a much wider range of definitive hosts of species of this genus, i.e. amphibians and reptiles, which is exceptional among proteocephalideans. Postcyclic parasitism, i.e. predation of the definitive host infected with sexually mature parasites, cannot be excluded but does not seem to be probable. In addition, the occurrence of A. bunthangi in the former Indochina extends the range of the geographical distribution of the genus to another zoogeographical region. The new species differs from both species of Australotaenia in the relative size of an apical organ, the diameter of which equals to that of suckers (versus much smaller in the remaining species, in which the width of the apical organ represents less than 2/3 of the diameter of the suckers), much smaller scolex and suckers (width 150 μm and diameter of suckers 50-55 μm versus 245-420 μm and 100-140 μm, respectively), and longer body (224 mm versus 57-121 mm). In addition, A. bunthangi differs from A. hylae (Johnston, 1912) (type-species of the genus) by the number of testes (46-64 versus 74-106 in A. hylae) and by the ovary width/proglottis width ratio (55-65% versus 68-71% in A. hylae). Australotaenia bunthangi differs from A. grobeli de Chambrier et de Chambrier, 2010 by relative size of the cirrus-sac (its length represents 18-24% of the width of the proglottis versus 27-33% in A. grobeli) and by the diameter of the embryophore (25-27 µm versus 18-23 µm in A. grobeli).
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public