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https://www.readbyqxmd.com/read/28335538/precise-orbit-solution-for-swarm-using-space-borne-gps-data-and-optimized-pseudo-stochastic-pulses
#1
Bingbing Zhang, Zhengtao Wang, Lv Zhou, Jiandi Feng, Yaodong Qiu, Fupeng Li
Swarm is a European Space Agency (ESA) project that was launched on 22 November 2013, which consists of three Swarm satellites. Swarm precise orbits are essential to the success of the above project. This study investigates how well Swarm zero-differenced (ZD) reduced-dynamic orbit solutions can be determined using space-borne GPS data and optimized pseudo-stochastic pulses under high ionospheric activity. We choose Swarm space-borne GPS data from 1-25 October 2014, and Swarm reduced-dynamic orbits are obtained...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28333639/robust-dynamic-multi-objective-vehicle-routing-optimization-method
#2
Yi-Nan Guo, Jian Cheng, Sha Luo, Dun-Wei Gong
For dynamic multi-objective vehicle routing problems, the waiting time of vehicle, the number of serving vehicles, the total distance of routes were normally considered as the optimization objectives. Except for above objectives, fuel consumption that leads to the environmental pollution and energy consumption was focused on in this paper. Considering the vehicles' load and the driving distance, corresponding carbon emission model was built and set as an optimization objective. Dynamic multi-objective vehicle routing problems with hard time windows and randomly appeared dynamic customers, subsequently, were modeled...
March 21, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28333067/optimal-waste-load-allocation-using-graph-model-for-conflict-resolution
#3
Leila Saberi, Mohammad Hossein Niksokhan
In this paper, a new methodology is proposed for waste load allocation in river systems using the decision support system (DSS) for the graph model for conflict resolution II (GMCRII), multi-criteria decision making (MCDM) analysis and the Multi-Objective Particle Swarm Optimization (MOPSO) algorithm. Minimization of total treatment and penalty costs and minimization of biological oxygen demand violation of standards at the check point are considered as the main objectives of this study. At first, the water quality along the river was simulated using the Streeter-Phelps (S-P) equation coupled with the MOPSO model...
March 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28330090/piper-betle-leaf-extract-affects-the-quorum-sensing-and-hence-virulence-of-pseudomonas-aeruginosa-pao1
#4
Siraj Datta, Debanjan Jana, Tilak Raj Maity, Aveek Samanta, Rajarshi Banerjee
Quorum sensing (QS) plays an important role in virulence of Pseudomonas aeruginosa, blocking of QS ability are viewed as viable antimicrobial chemotherapy and which may prove to be a safe anti-virulent drug. Bioactive components from Piper betle have been reported to possess antimicrobial ability. This study envisages on the anti-QS properties of ethanolic extract of P. betle leaf (PbLE) using P. aeruginosa PAO1 as a model organism. A marked reduction in swarming, swimming, and twitching ability of the bacteria is demonstrated in presence of PbLE...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28327547/iron-based-magnetic-superhalogens-with-pseudohalogens-as-ligands-an-unbiased-structure-search
#5
Li Ping Ding, Peng Shao, Cheng Lu, Fang Hui Zhang, Li Ya Wang
We have performed an unbiased structure search for a series of neutral and anionic FeL4 (L = BO2, CN, NO2, NO3, OH, CH3, NH2, BH4 and Li2H3) clusters using the CALYPSO (Crystal structure Analysis by Particle Swarm Optimization) structure search method. To probe the superhalogen properties of neutral and anionic FeL4 clusters, we used density-functional theory with the B3LYP functional to examine three factors, including distribution of extra electron, pattern of bonding and the nature of the ligands. Theoretical results show that Fe(BO2)4, Fe(NO3)4 and Fe(NO2)4 can be classified as magnetic superhalogen due to that their electron affinities even exceed those of the constituent ligands...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325439/a-novel-myocardium-segmentation-approach-based-on-neutrosophic-active-contour-model
#6
Yanhui Guo, Guo-Qing Du, Jing-Yi Xue, Rong Xia, Yu-Hang Wang
BACKGROUND AND OBJECTIVES: Automatic delineation of the myocardium in echocardiography can assist radiologists to diagnosis heart problems. However, it is still challenging to distinguish myocardium from other tissue due to a low signal-to-noise ratio, low contrast, vague boundary, and speckle noise. The purpose of this study is to automatically detect myocardium region in left ventricle myocardial contrast echocardiography (LVMCE) images to help radiologists' diagnosis and further measurement on infarction size...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28322404/device-and-programming-abstractions-for-spatiotemporal-control-of-active-micro-particle-swarms
#7
Amy T Lam, Karina G Samuel-Gama, Jonathan Griffin, Matthew Loeun, Lukas C Gerber, Zahid Hossain, Nate J Cira, Seung Ah Lee, Ingmar H Riedel-Kruse
We present a hardware setup and a set of executable commands for spatiotemporal programming and interactive control of a swarm of self-propelled microscopic agents inside a microfluidic chip. In particular, local and global spatiotemporal light stimuli are used to direct the motion of ensembles of Euglena gracilis, a unicellular phototactic organism. We develop three levels of programming abstractions (stimulus space, swarm space, and system space) to create a scripting language for directing swarms. We then implement a multi-level proof-of-concept biotic game using these commands to demonstrate their utility...
March 21, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28322263/causal-mechanisms-of-seismo-em-phenomena-during-the-1965-1967-matsushiro-earthquake-swarm
#8
Yuji Enomoto, Tsuneaki Yamabe, Nobuo Okumura
The 1965-1967 Matsushiro earthquake swarm in central Japan exhibited two unique characteristics. The first was a hydro-mechanical crust rupture resulting from degassing, volume expansion of CO2/water, and a crack opening within the critically stressed crust under a strike-slip stress. The other was, despite the lower total seismic energy, the occurrence of complexed seismo-electromagnetic (seismo-EM) phenomena of the geomagnetic intensity increase, unusual earthquake lights (EQLs) and atmospheric electric field (AEF) variations...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320675/swarm-robots-search-for-multiple-targets-based-on-an-improved-grouping-strategy
#9
Qirong Tang, Lu Ding, Fangchao Yu, Yuan Zhang, Yinghao Li, Haibo Tu
Swarm robots search for multiple targets in collaboration in unknown environments has been addressed in this paper. An improved grouping strategy based on constriction factors Particle Swarm Optimization is proposed. Robots are grouped under this strategy after several iterations of stochastic movements, which considers the influence range of targets and environmental information they have sensed. The group structure may change dynamically and each group focuses on searching one target. All targets are supposed to be found finally...
March 14, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28318117/transcriptional-regulation-of-cpsq-mfpabc-and-mfpabc-by-calr%C3%A2-in-vibrio-parahaemolyticus
#10
He Gao, Lingyu Zhang, George Osei-Adjei, Wenhui Yang, Dongsheng Zhou, Xinxiang Huang, Huiying Yang, Zhe Yin, Yiquan Zhang
The cpsQ-mfpABC locus is transcribed as two operons, i.e., cpsQ-mfpABC and mfpABC, in Vibrio parahaemolyticus, and both of them are all required for biofilm formation. CalR belongs to the LysR-type transcriptional regulator family, and was originally identified as a repressor of the swarming motility and T3SS1 genes expression in V. parahaemolyticus. In the present work, a combination of qRT-PCR, primer extension, LacZ fusion expression, electrophoretic mobility shift assay, and DNase I footprinting assays were employed to elucidate the regulatory mechanisms of cpsQ-mfpABC and mfpABC by CalR...
March 20, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28316619/a-method-for-consensus-reaching-in-product-kansei-evaluation-using-advanced-particle-swarm-optimization
#11
Yan-Pu Yang
Consumers' opinions toward product design alternatives are often subjective and perceptual, which reflect their perception about a product and can be described using Kansei adjectives. Therefore, Kansei evaluation is often employed to determine consumers' preference. However, how to identify and improve the reliability of consumers' Kansei evaluation opinions toward design alternatives has an important role in adding additional insurance and reducing uncertainty to successful product design. To solve this problem, this study employs a consensus model to measure consistence among consumers' opinions, and an advanced particle swarm optimization (PSO) algorithm combined with Linearly Decreasing Inertia Weight (LDW) method is proposed for consensus reaching by minimizing adjustment of consumers' opinions...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28297945/multifractality-in-individual-honeybee-behavior-hints-at-colony-specific-social-cascades-reanalysis-of-radio-frequency-identification-data-from-five-different-colonies
#12
Nicole S Carver, Damian G Kelty-Stephen
Honeybees (Apis mellifera) exhibit complex coordination and interaction across multiple behaviors such as swarming. This coordination among honeybees in the same colony is remarkably similar to the concept of informational cascades. The multifractal geometry of cascades suggests that multifractal measures of individual honeybee activity might carry signatures of these colony-wide coordinations. The present work reanalyzes time stamps of entrances to and exits from the hive captured by radio-frequency identification (RFID) sensors reading RFID tags on individual bees...
February 2017: Physical Review. E
https://www.readbyqxmd.com/read/28294685/star-anise-illicium-verum-hook-f-as-quorum-sensing-and-biofilm-formation-inhibitor-on-foodborne-bacteria-study-in-milk
#13
Md Ramim Tanver Rahman, Zaixiang Lou, Jun Zhang, Fuhao Yu, Yakindra Prasad Timilsena, Caili Zhang, Yi Zhang, Amr M Bakry
Bacteria use quorum sensing (QS) systems to communicate with each other and regulate microbial group behavior, such as the secretion of virulence factors, including biofilm formation. In order to explore safe, edible agents, the potential of star anise (SA) as an anti-QS and antibiofilm agent and its possible application in milk safety were investigated. Staphylococcus aureus , Salmonella Typhimurium, Pseudomonas aeruginosa , and biosensor strain Chromobacterium violaceum were selected as test strains for QS, biofilm, and exopolysaccharide assays...
March 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28292263/cure-smote-algorithm-and-hybrid-algorithm-for-feature-selection-and-parameter-optimization-based-on-random-forests
#14
Li Ma, Suohai Fan
BACKGROUND: The random forests algorithm is a type of classifier with prominent universality, a wide application range, and robustness for avoiding overfitting. But there are still some drawbacks to random forests. Therefore, to improve the performance of random forests, this paper seeks to improve imbalanced data processing, feature selection and parameter optimization. RESULTS: We propose the CURE-SMOTE algorithm for the imbalanced data classification problem...
March 14, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28287980/constructing-dna-barcode-sets-based-on-particle-swarm-optimization
#15
Bin Waang, Xuedong Zheng, Shihua Zhou, Changjun Zhou, Xiaopeng Wei, Qiang Zhang, Ziqi Wei
Following the completion of the human genome project, a large amount of high-throughput bio-data was generated. To analyze these data, massively parallel sequencing, namely next-generation sequencing, was rapidly developed. DNA barcodes are used to identify the ownership between sequences and samples when they are attached at the beginning or end of sequencing reads. Constructing DNA barcode sets provides the candidate DNA barcodes for this application. To increase the accuracy of DNA barcode sets, a particle swarm optimization (PSO) algorithm has been modified and used to construct the DNA barcode sets in this paper...
March 7, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28287821/a-particle-swarm-optimization-based-approach-with-local-search-for-predicting-protein-folding
#16
Cheng-Hong Yang, Yu-Shiun Lin, Li-Yeh Chuang, Hsueh-Wei Chang
The hydrophobic-polar (HP) model is commonly used for predicting protein folding structures and hydrophobic interactions. This study developed a particle swarm optimization (PSO)-based algorithm combined with local search algorithms; specifically, the high exploration PSO (HEPSO) algorithm (which can execute global search processes) was combined with three local search algorithms (hill-climbing algorithm, greedy algorithm, and Tabu table), yielding the proposed HE-L-PSO algorithm. By using 20 known protein structures, we evaluated the performance of the HE-L-PSO algorithm in predicting protein folding in the HP model...
March 13, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28287468/swarms-ontology-a-common-information-model-for-the-cooperation-of-underwater-robots
#17
Xin Li, Sonia Bilbao, Tamara Martín-Wanton, Joaquim Bastos, Jonathan Rodriguez
In order to facilitate cooperation between underwater robots, it is a must for robots to exchange information with unambiguous meaning. However, heterogeneity, existing in information pertaining to different robots, is a major obstruction. Therefore, this paper presents a networked ontology, named the Smart and Networking Underwater Robots in Cooperation Meshes (SWARMs) ontology, to address information heterogeneity and enable robots to have the same understanding of exchanged information. The SWARMs ontology uses a core ontology to interrelate a set of domain-specific ontologies, including the mission and planning, the robotic vehicle, the communication and networking, and the environment recognition and sensing ontology...
March 11, 2017: Sensors
https://www.readbyqxmd.com/read/28287396/topical-treatment-of-herpes-simplex-virus-infection-with-enzymatically-created-sirna-swarm
#18
Henrik Paavilainen, Jenni Lehtinen, Alesia Romanovskaya, Michaela Nygårdas, Dennis H Bamford, Minna M Poranen, Veijo Hukkanen
BACKGROUND: Herpes simplex virus (HSV) is a common human pathogen. Despite current antivirals, it causes a significant medical burden. Drug resistant strains exist and they are especially prevalent in immunocompromised patients and in HSV eye infections. New treatment modalities are needed. METHODS: BALB/c mice were corneally infected with HSV and subsequently treated with a swarm of enzymatically created, Dicer-substrate small interfering RNA (siRNA) molecules that targeted the HSV gene UL29...
March 13, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28278212/targeting-male-mosquito-swarms-to-control-malaria-vector-density
#19
Simon Peguedwinde Sawadogo, Abdoulaye Niang, Etienne Bilgo, Azize Millogo, Hamidou Maïga, Roch K Dabire, Frederic Tripet, Abdoulaye Diabaté
Malaria control programs are being jeopardized by the spread of insecticide resistance in mosquito vector populations. It has been estimated that the spread of resistance could lead to an additional 120000 deaths per year, and interfere with the prospects for sustained control or the feasibility of achieving malaria elimination. Another complication for the development of resistance management strategies is that, in addition to insecticide resistance, mosquito behavior evolves in a manner that diminishes the impact of LLINs and IRS...
2017: PloS One
https://www.readbyqxmd.com/read/28272359/insight-into-the-earthquake-risk-information-seeking-behavior-of-the-victims-evidence-from-songyuan-china
#20
Shasha Li, Guofang Zhai, Shutian Zhou, Chenjing Fan, Yunqing Wu, Chongqiang Ren
Efficient risk communication is a vital way to reduce the vulnerability of individuals when facing emergency risks, especially regarding earthquakes. Efficient risk communication aims at improving the supply of risk information and fulfilling the need for risk information by individuals. Therefore, an investigation into individual-level information seeking behavior within earthquake risk contexts is very important for improved earthquake risk communication. However, at present there are very few studies that have explored the behavior of individuals seeking earthquake risk information...
March 7, 2017: International Journal of Environmental Research and Public Health
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