552 research outputs found
Plator yunlong Zhu, Tang, Zhang & Song, 2006, sp. nov.
No full textPlator yunlong sp. nov. (Figs 31 –35, 46) Type material Holotype female, CHINA: Yunnan Province, Yunlong County, N 25 ° 54 ’, E 99 ° 22 ’, 6 October 2001, ErBing Yang leg. Paratype: 1 male, same data as holotype. (MHBU). Diagnosis This species can be easily distinguished from other species of this genus by female with epigynal margins laterally, large and Cshaped, the shadows of spermathecae almost butterflylike, copulatory ducts relatively long, parallel to each other (Figs 32, 33); median apophysis of male pedipalpus oval, and with a prong near tip of its anterior edge in ventral view (Fig. 34). Etymology The specific name is a noun in apposition taken from the type locality. Description Female (holotype): Total length 10.35. Carapace 3.51 long, 5.31 wide; opisthosoma 6.93 long, 6.48 wide. Carapace yellow brown, with hairs and setae as P. pennatus. All eyes circular. Anterior eye row slight recuved, poeterior eye row recurved (Fig. 31). Eye diameters: AME 0.15, ALE 0.13, PME 0.13, PLE 0.18. Distances between eyes: AME –AME 0.13, AME–ALE 0.18, PME–PME 0.27, PME–PLE 0.43. MOA 0.43 long, front width 0.43, back width 0.53. Chelicerae light red brown, both promarginal and retromarginal with three teeth. Clypeus, endites and sternum light yellow brown, sternum margins brown. Leg formula 2341. Leg measurements of Plator yunlong sp. nov., female. Opisthosoma oval. Dorsum pale yellow, with small paddle hairs and sparse dark setae bearing spinules, posterior half and sides with small irregular black spots. Six spinnerets. Epigynum laterally with strongly sclerotized, Cshaped margins, and a median butterflylike shadow of spermathecae, copulatory ducts relatively long and parallel to each other (Figs 32–33). Male total length 6.84. Carapace 2.79 long, 4.14 wide; opisthosoma 4.23 long, 4.14 wide. Eye diameters: AME 0.13, ALE 0.10, PME 0.13, PLE 0.18. Distances between eyes: AME–AME 0.09, AME–ALE 0.10, PME–PME 0.19, PME–PLE 0.28. MOA 0.38 long, front width 0.35, back width 0.45. Appearance of body and legs as females. Retrolateral tibial apophysis of pedipalpus short, directed forward. Median apophysis oval, erect, with a prong near tip of its anterior edge in ventral view (Figs 34–35). Distribution Southeast China (Yunnan). Biology Living in crevices of old tiles and under bark of pine trees.Published as part of Zhu, Ming-Sheng, Tang, Gui-Ming, Zhang, Feng & Song, Da-Xiang, 2006, Revision of the spider family Trochanteriidae from China (Araneae: Gnaphosoidea), pp. 31-51 in Zootaxa 1140 (1) on pages 46-49, DOI: 10.11646/zootaxa.1140.1.2, http://zenodo.org/record/17205
First person – Yunlong Li
No full textFirst Person is a series of interviews with the first authors of a selection of papers published in Biology Open, helping early-career researchers promote themselves alongside their papers. Yunlong Li is first author on ‘The ATPase TER94 regulates Notch signalling during Drosophila wing development’, published in BiO. Yunlong is a graduate student in the lab of Junzheng, Zhang at China Agricultural University, Beijing, P. R. China, investigating the regulatory mechanisms of developmental signalling pathways in Drosophila melanogaster
Functionalization of carbon nanotubes with quantum dots for photovoltaic applications
No full textCNT sono stati funzionalizzati con organosilani e gruppi aromatici entrambi possedenti funzioni tiolo in grado di interagire con quantum dots di solfuro di Cadmio. Questi ibridi potrebbero favorire il trasporto della carica elettrica se inseriti in dispositivi fotovoltaici, in particolar modo nelle celle solari ibride di nuova generazione e nelle celle fotoelettrochimiche di Gratzel (DSSCs)
Bid-Based Priority Signal Control in a Connected Environment
No full textDemand-responsive traffic signal control, like actuated signal control and adaptive traffic signal control, aims to provide efficient movements to road users. Although traffic control signals often treat vehicles as homogeneous objects, in reality road users��� value of time (VOT) may vary depending on their situation. However, little research has been conducted in signal control methods that account for individual differences in VOT. This research introduces the concept of a bid-based priority signal control (BBPSC), a traffic signal control method that considers individual differences in VOT via bids. Within BBPSC, drivers can bid for a green signal indication in a connected environment. In the first phase of research, the author addressed key elements of such a concept. In asymmetric simple exclusion process (ASEP) with two conflicting movements, an algorithm extended a green interval as long as the cumulative opportunity loss observed in stopped movements remained less than the value that would have been lost through the termination of that green interval. BBPSC prioritized high bidders and resulted in a greater subjective user benefit compared to a pre-timed equivalent. In the second phase, the applicability of BBPSC was further investigated with a four-phase signal controller using microsimulations in PTV Vissim.
While BBPSC produced approximately 70 percent longer queues than non-bid-based priority signal control (NBBPSC) in undersaturated conditions, the new control method achieved a smaller delay for high bidders on average, providing user benefit for high bidders. Extremely high bidders experienced a more than 90 percent decrease in delays with BBPSC when measured against NBBPSC. These results proved that typical four-phase traffic control signals can be operated by an algorithm based on bids from road users. Future work should investigate the optimal values of key input variables of BBPSC, especially in highly saturated traffic conditions.
* Part of this section is reprinted with permission from ���Bid-Based Priority Signal Control in a Connected Environment: Concept��� by Iio, Kentaro, Yunlong Zhang, and Luca Quadrifoglio, 2019. Transportation Research Record: Journal of the Transportation Research Board, https://doi.org/10.1177/0361198119855981, Copyright 2019 Sage Publications, Incorporated
Robust MMSE Precoding Strategy for Multiuser MIMO Relay Systems with Switched Relaying and Side Information
No full textIn this work, we propose a minimum mean squared error (MMSE) robust base station (BS) precoding strategy based on switched relaying (SR) processing and limited transmission of side information for interference suppression in the downlink of multiuser multiple-input multiple-output (MIMO) relay systems. The BS and the MIMO relay station (RS) are both equipped with a codebook of interleaving matrices. For a given channel state information (CSI) the selection function at the BS chooses the optimum interleaving matrix from the codebook based on two optimization criteria to design the robust precoder. Prior to the payload transmission the BS sends the index corresponding to the selected interleaving matrix to the RS, where the best interleaving matrix is selected to build the optimum relay processing matrix. The entries of the codebook are randomly generated unitary matrices. Simulation results show that the performance of the proposed techniques is significantly better than prior art in the case of imperfect CSI.
Cultural identities as reflected in the literature of the Northern and Southern dynasties period (4th-6th centuries A.D.)
No full textDuring the period of the Northern and Southern dynasties of China identity questions became serious in a society thrown into disorder by political, religious and ethnic problems. This thesis uses three books written in the sixth century to
discuss how educated Chinese faced identity problems and how they dealt with them.
The Buddhist monk Huijiao, dealt with the problems of sinifying a foreign religion. He constructed many different identities in addition to the Buddhist one for the monks in his book Gaoseng zhuan, (Lives of Eminent Monks), a collection of biographies of Buddhist monks, to bring Buddhism closer to Chinese tradition and more acceptable by Confucian standards. Through the identity construction he
also made responses to anti-Buddhist ideas.
Yang Xuanzhi's Luoyang qielan ji, (Record of the Monasteries of Luoyang), deals with the identity problems of Chinese officials serving a Xianbei regime in
the north and of the short-lived capital of the Northern Wei in Luoyang. Yang reconstructed a Chinese identity for the lost capital as a true heir of Chinese tradition, as were the emperors, princes and officials who lived there. He created an identity defined not by ethnicity but by culture.
Yan Zhitui's Tanshi jiaxun, (Family Instruction of the Yan Clan), is a book which tells his descendants how to construct and maintain the future identity of his
own family. He drew on his own experience of recovering from repeated political catastrophes to set out an identity that would help the family to survive disordered times and maintain their status in society
Kernel Density Estimation for Dynamical Systems
No full text© 2018 Hanyuan Hang, Ingo Steinwart, Yunlong Feng and Johan A.K. Suykens. We study the density estimation problem with observations generated by certain dynamical systems that admit a unique underlying invariant Lebesgue density. Observations drawn from dynamical systems are not independent and moreover, usual mixing concepts may not be appropriate for measuring the dependence among these observations. By employing the C-mixing concept to measure the dependence, we conduct statistical analysis on the consistency and convergence of the kernel density estimator. Our main results are as follows: First, we show that with properly chosen bandwidth, the kernel density estimator is universally consistent under L1-norm; Second, we establish convergence rates for the estimator with respect to several classes of dynamical systems under L1-norm. In the analysis, the density function f is only assumed to be Holder continuous or pointwise Holder controllable which is a weak assumption in the literature of nonparametric density estimation and also more realistic in the dynamical system context. Last but not least, we prove that the same convergence rates of the estimator under L1-norm and L1-norm can be achieved when the density function is Holder continuous, compactly supported, and bounded. The bandwidth selection problem of the kernel density estimator for dynamical system is also discussed in our study via numerical simulations.sponsorship: The authors are grateful to Professor Laszlo Gyorfi, the reviewers, and the action editor for helpful comments that helped improve the quality and the presentation of this paper. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013) / ERC AdG A-DATADRIVE-B (290923). Hanyuan Hang's research is supported by the National Natural Science Foundation of China (Project No.: 11731011). This paper reflects only the authors' views, the Union is not liable for any use that may be made of the contained information. Research Council KUL: GOA/10/09 MaNet, CoE PFV/10/002 (OPTEC), BIL12/11T; PhD/Postdoc grants. Flemish Government: FWO: projects: G.0377.12 (Structured systems), G.088114N (Tensor based data similarity); PhD/Postdoc grants. IWT: projects: SBO POM (100031); PhD/Postdoc grants. iMinds Medical Information Technologies SBO 2014. Belgian Federal Science Policy Office: IUAP P7/19 (DYSCO, Dynamical systems, control and optimization, 2012-2017). The corresponding author is Yunlong Feng. (European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013) / ERC AdG A-DATADRIVE-B|290923, National Natural Science Foundation of China|11731011, Research Council KUL|GOA/10/09 MaNet, Research Council KUL|CoE PFV/10/002, Research Council KUL|BIL12/11T, Flemish Government: FWO|G.0377.12, Flemish Government: FWO|G.088114N, IWT|100031)status: Publishe
A Traffic Operations Method for Evaluating Automobile and Bicycle Shared Roadways
No full textShared roadways are a cost effective method for providing bicycle facilities in areas with limited right-of-way; shared roadways have automobiles and bicycles operating in the same traveled way. However, shared roadways may negatively affect traffic operations and there is limited guidance on appropriate shared roadways implementation. This thesis has three objectives: evaluate the impact of shared roadways on automobile quality of service, compare automobile quality of service to bicycle quality of service on shared roadways, and provide guidance on the implementation of shared roadways. The author hypothesizes that shared roadways should only be implemented when automobile Level of Service (LOS), bicycle LOS, and facility safety are "acceptable."
The author accomplishes the objectives by generating data using microsimulation models. The author uses microsimulation model data to evaluate automobile quality of service on shared roadways. In the evaluation of automobile quality of service, the measures of effectiveness are automobile LOS threshold (the maximum automobile flow-rate before a change in automobile LOS) and automobile average travel speed (the average travel time divided by the segment length, a space mean speed). To compare automobile and bicycle quality of service, the author uses the bicycle LOS model in NCHRP Report 616 to generate bicycle LOS thresholds (the maximum automobile flow-rate before a change in bicycle LOS). After generating bicycle LOS thresholds, the author compares the bicycle LOS thresholds to the automobile LOS thresholds. Finally, the author uses the findings of the investigations to provide guidance on the implementation of shared roadways.
In this thesis, the author finds automobile quality of service on shared roadways decreases as automobile free-flow speed, automobile volume, and bicycle volume increase. For most conditions, the author finds bicycle quality of service is better than automobile quality of service on shared roadways. Bicycle quality of service is lower than automobile quality of service with increases in unsignalized access points per mile, signalized intersection crossing distance, and heavy vehicle percent. The author provides guidance on the implementation of shared roadways based upon automobile quality of service
A conservative finite volume scheme preserving maximum principle for diffusion equations
No full textTruly Mould free Carbon fibre reinforced polymer (CFRP) manufacturing by double-point incremental forming (DPIF) and direct electrical cure (DEC)
No full textCarbon fibre-reinforced polymers (CFRPs) have been widely used in a variety of high-performance fields, such as aerospace, automotive and sport. CFRP manufacturing methods require extended curing times and moulds. The mould is used to define the shape of the composite. Moulds are expensive and add considerably to the costs for small production runs. Additionally, autoclaves and ovens have high running costs due to the indirect heating of the part.
This thesis proposed a novel mould-free CFRP manufacturing method, double-point incremental forming (DPIF) with direct electrical curing (DEC). To achieve this, the conductivity of the CFRP is increased by adding conductive nanoparticles into the matrix (epoxy resin). First, carbon nanoparticles, including carbon black (CB), carbon nanotubes (CNTs), and graphene, were dispersed into the epoxy resin system. Compared with CNTs and graphene, CB shows good dispersion. With a CB loading of 2wt.%, the composite shows optimal performance in terms of electrical and mechanical properties.
Then, CFRP with 2 wt.DEC manufactured % CB with four different electrical contact arrangements. Here, the top-bottom mode (current through the laminate) has the best performance, which established a solid foundation for DPIF research.
For DPIF, CFRP with 2 wt.% CB was used. Experimental and finite element analysis methods are used to evaluate the DPIF process. The result indicates that DPIF can cure the sample in a short time without fibre damage. In addition, DPIF has the same performance in terms of mechanical properties and DoC as traditional manufacturing methods (oven and autoclave) but with much lower energy consumption. DPIF achieved fast localised consolidation and curing without a mould
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