bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dopamine disruption increases negotiation for cooperative interactions in a fish
Authors: Messias João P. M. , Paula José R. , Grutter Alexandra S. , Bshary Redouan , Soares Marta C. 
Published: February 2016

AbstractHumans and other animals use previous experiences to make behavioural decisions, balancing the probabilities of receiving rewards or punishments with alternative actions. The dopaminergic system plays a key role in this assessment: for instance, a decrease in dopamine transmission, which is signalled by the failure of an expected reward, may elicit a distinct behavioural response. Here, we tested the effect of exogenously administered dopaminergic compounds on a cooperative vertebrate’s decision-making process, in a natural setting. We show, in the Indo-Pacific bluestreak cleaner wrasse Labroides dimidiatus, that blocking dopamine receptors in the wild induces cleaners to initiate more interactions with and to provide greater amounts of physical contact to their client fish partners. This costly form of tactile stimulation using their fins is typically used to prolong interactions and to reconcile with clients after cheating. Interestingly, client jolt rate, a correlate of cheating by cleaners, remained unaffected. Thus, in low effective dopaminergic transmission conditions cleaners may renegotiate the occurrence and duration of the interaction with a costly offer. Our results provide first evidence for a prominent role of the dopaminergic system in decision-making in the context of cooperation in fish.
Model predictions of features in microsaccade-related neural responses in a feedforward network with short-term synaptic depression
Authors: Zhou Jian-Fang , Yuan Wu-Jie , Zhou Zhao , Zhou Changsong 
Published: February 2016

AbstractRecently, the significant microsaccade-induced neural responses have been extensively observed in experiments. To explore the underlying mechanisms of the observed neural responses, a feedforward network model with short-term synaptic depression has been proposed [Yuan, W.-J., Dimigen, O., Sommer, W. and Zhou, C. Front. Comput. Neurosci. 7, 47 (2013)]. The depression model not only gave an explanation for microsaccades in counteracting visual fading, but also successfully reproduced several microsaccade-related features in experimental findings. These results strongly suggest that, the depression model is very useful to investigate microsaccade-related neural responses. In this paper, by using the model, we extensively study and predict the dependance of microsaccade-related neural responses on several key parameters, which could be tuned in experiments. Particularly, we provide a significant prediction that microsaccade-related neural response also complies with the property “sharper is better” observed in many contexts in neuroscience. Importantly, the property exhibits a power-law relationship between the width of input signal and the responsive effectiveness, which is robust against many parameters in the model. By using mean field theory, we analytically investigate the robust power-law property. Our predictions would give theoretical guidance for further experimental investigations of the functional role of microsaccades in visual information processing.
An integrative approach for analyzing hundreds of neurons in task performing mice using wide-field calcium imaging
Authors: Mohammed Ali I. , Gritton Howard J. , Tseng Hua-an , Bucklin Mark E. , Yao Zhaojie , Han Xue 
Published: February 2016

AbstractAdvances in neurotechnology have been integral to the investigation of neural circuit function in systems neuroscience. Recent improvements in high performance fluorescent sensors and scientific CMOS cameras enables optical imaging of neural networks at a much larger scale. While exciting technical advances demonstrate the potential of this technique, further improvement in data acquisition and analysis, especially those that allow effective processing of increasingly larger datasets, would greatly promote the application of optical imaging in systems neuroscience. Here we demonstrate the ability of wide-field imaging to capture the concurrent dynamic activity from hundreds to thousands of neurons over millimeters of brain tissue in behaving mice. This system allows the visualization of morphological details at a higher spatial resolution than has been previously achieved using similar functional imaging modalities. To analyze the expansive data sets, we developed software to facilitate rapid downstream data processing. Using this system, we show that a large fraction of anatomically distinct hippocampal neurons respond to discrete environmental stimuli associated with classical conditioning and that the observed temporal dynamics of transient calcium signals are sufficient for exploring certain spatiotemporal features of large neural networks.
Light adaptation does not prevent early retinal abnormalities in diabetic rats
Authors: Kur Joanna , Burian Michael A. , Newman Eric A. 
Published: February 2016

AbstractThe aetiology of diabetic retinopathy (DR), the leading cause of blindness in the developed world, remains controversial. One hypothesis holds that retinal hypoxia, exacerbated by the high O2 consumption of rod photoreceptors in the dark, is a primary cause of DR. Based on this prediction we investigated whether early retinal abnormalities in streptozotocin-induced diabetic rats are alleviated by preventing the rods from dark adapting. Diabetic rats and their non-diabetic littermates were housed in a 12:12 hour light-dim light photocycle (30 lux during the day and 3 lux at night). Progression of early retinal abnormalities in diabetic rats was assessed by monitoring the ERG b-wave and oscillatory potentials, Müller cell reactive gliosis, and neuronal cell death, as assayed by TUNEL staining and retinal thickness at 6 and 12 weeks after diabetes induction. Maintaining diabetic animals in a dim-adapting light did not slow the progression of these neuronal and glial changes when compared to diabetic rats maintained in a standard 12:12 hour light-dark photocycle (30 lux during the day and 0 lux at night). Our results indicate that neuronal and glial abnormalities in early stages of diabetes are not exacerbated by rod photoreceptor O2 consumption in the dark.
Low‐power quadrature voltage‐controlled oscillator using current‐reuse and transformer‐based Armstrong topologies
Authors: Ryu H. , Ha K.W. , Baek D. 
Published: February 2016

A new low‐power current‐reuse quadrature voltage‐controlled oscillator (QVCO) is proposed. The proposed QVCO couples two complementary current‐reuse Armstrong voltage‐controlled oscillators (VCOs) using series coupling switches. The current‐reuse technique reduces the power consumption, and the transformer‐based Armstrong configuration improves the phase noise performance by increasing the negative Gm of the VCO core. The proposed QVCO consumes 2.46 mW of power at 8.71 GHz from a 1.1 V supply. The measured phase noise is −113.3 dBc/Hz at the offset frequency of 1 MHz, and the figure of merit is −188.2 dBc/Hz. The frequency tuning range is from 8.34 to 9.13 GHz. The chip area is 700 × 340 μm2 in a 0.13 μm CMOS process.
Broadband rotational symmetry circularly polarised antenna
Authors: Xu Rui , Li Jian‐ying , Wei Kun , Yang Guang‐wei 
Published: February 2016

A new broadband circularly polarised printed antenna is proposed. This antenna is evolved from a bow‐tie dipole antenna, which have wideband impendence bandwidth (IBW). It uses a configuration of rotational symmetry dipole structure to be radiators. This rotational symmetry structure makes the surface currents to produce a circular polarisation wave. The simulation and measurement results are very consistent. The results show good performance of IBW is ∼140.6% (1.91–10.95 GHz) for S11<−10 dB, 3 dB axial‐ratio bandwidth is ∼96.6% (3.70–10.62 GHz).
Avaliação nutricional de gestantes sob acompanhamento em serviços de pré-natal distintos: a região metropolitana e o ambiente rural
Authors: Teixeira Caroline San Severino , Cabral Antônio Carlos Vieira 
Published: February 2016

Resumo
Objetivo Verificar diferenças em alguns aspectos nutricionais de gestantes acompanhadas em serviço de atenção pré-natal em uma cidade do interior e na região metropolitana.
Métodos Foram avaliadas gestantes em atendimento pré-natal na cidade de Belo Horizonte (BH), região metropolitana, e Paula Cândido (PC), interior de MG. Aplicou-se um Questionário de Frequência Alimentar (QFA) contendo informações socioeconômicas e sobre o hábito alimentar, além disso, foram aferidos peso e altura no momento do atendimento e questionado o peso pré-gestacional, para posterior cálculo do IMC (índice de massa corpórea). A análise dos dados foi dividida por região e trimestre gestacional, utilizando o software SPSS versão 15.0, teste t para comparação de médias e qui-quadrado de independência, com 5% de significância.
Resultados Foram incluídas 240 gestantes, sendo 90 do interior e 150 da região metropolitana. Destas, a maioria são casadas (BH = 56,6%; PC = 46,6%), não trabalham fora de casa (BH = 54,6%; PC = 84,4%), predominantemente se alimentam 3 a 4 vezes ao dia no 1° e 2° trimestre (BH = 54,0 e 46,0%; PC = 66,7 e 63,3%, respectivamente) e fazem 5 a 6 refeições ao dia no 3° trimestre em BH (44%). Houve ganho de peso significativo somente no 1° trimestre (BH: 58,0%; PC: 53,33%). Ganho de peso versus hábito alimentar foi significativo para as variáveis “almoça ou janta fora de casa,” no 1° trimestre BH (p = 0,006); “quantas vezes consome leite,” no 1° trimestre PC(p = 0,03); “quantas vezes consome fastfood,” no 3° trimestre BH (p = 0,009).
Conclusões As gestantes em ambas regiões se alimentam de forma adequada, apesar da prevalência de sobrepeso pré-gestacional em BH e baixo nível de escolaridade e renda, principalmente no interior, indicador que pode ser pouco favorável à nutrição das gestantes neste período. Estudos de associação entre hábito alimentar e saúde do recém-nascido irão contribuir para maiores informações sobre a nutrição no período gestacional.
An A-theory without tense operators
Authors: Sullivan Meghan 
Published: February 2016

AbstractA-theorists think there is a fundamental difference between the present and other times. This concern shows up in what kinds of properties they take to be instantiated, what objects they think exist and how they formalize their views. Nearly every contemporary A-theorist assumes that her metaphysics requires a tense logic – a logic with operators like(‘it was the case that...’) and(‘it will be the case that...’). In this paper, I show that there is at least one viable A-theory that does not require a logic with tense operators. And I will argue that three common indispensability arguments for tense operators are unsound.
Mechanisms underlying astringency: introduction to an oral tribology approach
Authors: Upadhyay Rutuja , Brossard Natalia , Chen Jianshe 
Published: February 2016

Abstract
Astringency is one of the predominant factors in the sensory experience of many foods and beverages ranging from wine to nuts. The scientific community is discussing mechanisms that explain this complex phenomenon, since there are no conclusive results which correlate well with sensory astringency. Therefore, the mechanisms and perceptual characteristics of astringency warrant further discussion and investigation. This paper gives a brief introduction of the fundamentals of oral tribology forming a basis of the astringency mechanism. It discusses the current state of the literature on mechanisms underlying astringency describing the existing astringency models. The review discusses the crucial role of saliva and its physiology which contributes significantly in astringency perception in the mouth. It also provides an overview of research concerned with the physiological and psychophysical factors that mediate the perception of this sensation, establishing the ground for future research. Thus, the overall aim of the review is to establish the critical roles of oral friction (thin-film lubrication) in the sensation of astringency and possibly of some other specific sensory features.
Water based, solution-processable, transparent and flexible graphene oxide composite as electrodes in organic solar cell application
Authors: Lima L F , Matos C F , Gonçalves L C , Salvatierra R V , Cava C E , Zarbin A J G , Roman L S 
Published: February 2016

Abstract
In this work we propose an easy method to achieve a conductive, transparent and flexible graphene oxide (GO)-based composite thin film from an aqueous dispersion. We investigated the blend ratio between GO and the conjugated polymer poly(3,4–ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) by comparing the thin film optical transmittance, sheet resistance, morphology and mechanical stability. It was found that reasonable values of transmittance and resistivity coupled with its excellent flexibility – the conductivity remains almost the same even after 1000 bends cycles – make this composite very attracting for flexible optoelectronic applications. Thus, these films were used as transparent electrodes in a bilayer structured organic solar cell and the device architecture PET/GO:PEDOT/F8T2/C60/Al could reach a power conversion efficiency around 1.10%. This result presents a better performance compared with pristine PEDOT produced with similar parameters.
Metal electrode dependent field effect transistors made of lanthanide ion-doped DNA crystals
Authors: Dugasani Sreekantha Reddy , Hwang Taehyun , Kim Jang Ah , Gnapareddy Bramaramba , Kim Taesung , Park Sung Ha 
Published: February 2016

Abstract
We fabricated lanthanide ion (Ln3+, e.g. Dy3+, Er3+, Eu3+, and Gd3+)-doped self-assembled double-crossover (DX) DNA crystals grown on the surface of field effect transistors (FETs) containing either a Cr, Au, or Ni electrode. Here we demonstrate the metal electrode dependent FET characteristics as a function of various Ln3+. The drain–source current (I
ds), controlled by the drain–source voltage (V
ds) of Ln3+-doped DX DNA crystals with a Cr electrode on an FET, changed significantly under various gate voltages (V
g) due to the relative closeness of the work function of Cr to the energy band gap of Ln3+-DNA crystals compared to those of Au and Ni. For Ln3+-DNA crystals on an FET with either a Cr or Ni electrode at a fixed V
ds, I
ds decreased with increasing V
g ranging from  −2 to 0 V and from 0 to  +3 V in the positive and negative regions, respectively. By contrast, I
ds for Ln3+-DNA crystals on an FET with Au decreased with increasing V
g in only the positive region due to the greater electronegativity of Au. Furthermore, Ln3+-DNA crystals on an FET exhibited behaviour sensitive to V
g due to the appreciable charge carriers generated from Ln3+. Finally, we address the resistivity and the mobility of Ln3+-DNA crystals on an FET with different metal electrodes obtained from I
ds–V
ds and I
ds–V
g curves. The resistivities of Ln3+-DNA crystals on FETs with Cr and Au electrodes were smaller than those of pristine DNA crystals on an FET, and the mobility of Ln3+-DNA crystals on an FET with Cr was relatively higher than that associated with other electrodes.
APTWG: The 5th Asia-Pacific Transport Working Group Meeting
Authors: Gao X. , Ghim Y.-C. , Sun Y.W. , Gao Z. , Inagaki S. , Chen W. , Zhang T. , Wang Z.X. 
Published: February 2016

Abstract
This conference report gives a summary on the contributed papers and discussions presented at the 5th Asia-Pacific Transport Working Group Meeting held at Dalian, China from 9–12 June 2015. The main goal of the working group is to develop a predictive understanding of the basic mechanisms responsible for particle, momentum and energy transport in magnetically confined plasmas. The topics of the meeting in 2015 were organized under five main headings: (1) turbulence suppression and transport barrier formation, (2) effect of magnetic topology on MHD activity and transport, (3) non-diffusive contribution of momentum and particle transport, (4) non-local transport and turbulence spreading and coupling and (5) energetic particles and instability. The Young Researchers’ Forum which was held at this meeting is also described in this report.
A Finger Vein Identification Method Based on Template Matching
Authors: Zou Hui , Zhang Bing , Tao Zhigang , Wang Xiaoping 
Published: February 2016

Abstract
New methods for extracting vein features from finger vein image and generating templates for matching are proposed. In the algorithm for generating templates, we proposed a parameter-templates quality factor (TQF) - to measure the quality of generated templates. So that we can use fewer finger vein samples to generate templates that meet the quality requirement of identification. The recognition accuracy of using proposed methods of finger vein feature extraction and template generation strategy for identification is 97.14%.
Gold/Silicon nanowire arrays modified by Gold nanosphere as the surface-enhanced Raman spectroscopy substrate
Authors: Zhou Long , Li Mingyu , Tang Longhua , He Jian-Jun 
Published: February 2016

Abstract
Fabrication of gold coated silicon nanowires (AuSiNW) substrate is introduced in detail and A hybrid substrate is designed for surface-enhanced Raman spectroscopy (SERS). The SERS behaviors are discussed and compared by the detection of 4, 4’-Bipyridine. Gold nanoparicles is modified on the surface of AuSiNW to form the “hot gap”. Molecules captured in these “hot gap” can generate huge Raman signal. Double-fold enhancement of SERS signal has been achieved comparing with AuSiNW. The as-fabricated hybrid substrate exhibit high SERS sensitivity, long-term stability, and consistent reproducibility, highly potential for realizing a rapid, cost-effective, and label-free SERS-based biosensor.
Silicon-on-Insulator Nanowire Based Optical Waveguide Biosensors
Authors: Li Mingyu , Liu Yong , Chen Yangqing , He Jian-Jun 
Published: February 2016

Abstract
Optical waveguide biosensors based on silicon-on-insulator (SOI) nanowire have been developed for label free molecular detection. This paper reviews our work on the design, fabrication and measurement of SOI nanowire based high-sensitivity biosensors employing Vernier effect. Biosensing experiments using cascaded double-ring sensor and Mach-Zehnder- ring sensor integrated with microfluidic channels are demonstrated
Reflective Characteristics of Spatially-Bounded Laser Beam by Rugate coating
Authors: Guangwei Zheng 
Published: February 2016

Abstract
Based on the transfer matrix analysis and discrete Fourier transform, the reflective characteristics of a spatially-bounded laser beam by a Rugate coating are investigated. The spatial intensity distribution and reflectance efficiency of the reflected beam are formulated. When the central vector of the laser beam satisfies the coating's Bragg law, the spatial intensity distributions of the diffracted beam with the change of the coating's parameters are simulated. The results show that with the decrease of the thickness, the increase of the period, or the decrease of the relative permittivity modulation, the spatial intensity distributions of the reflected beam in the incidence plane are broadened compared with those of incident beam, while those perpendicular to the incidence plane are not. And the reflectance efficiencies decrease. Among these three parameters, the relative permittivity modulation and thickness influence the reflectance characteristics a lot, while the period influences the reflectance characteristics a little. It means that when the thickness decreases, or modulation decreases, the Rugate coating has finer angular selective characteristics and less angular selectivity bandwidth. The results are instructive for the design and application of Rugate coating.
Photoacoustic sensor of Temperature with Linear-shaped light source
Authors: Peng Yuanyuan , Wu Shulian , Peng Dongqing , Li Zhifang , Li Hui 
Published: February 2016

Abstract
A method of temperature measurement based on photoacoustic technique with its noninvasive, real-time, high precision is a new type technology. A cylindrical lens was applied to improve the signal to noise ratio of the detector system in this paper. Then, the relation of photoacoustic signal and temperature were discussed, the corresponding image was obtained. The result indicated that the photoacoustic pressure amplitude presented a good linear relationship at temperature range from 20 °C to 50 °C. The study demonstrated that the photoacoustic temperature measurement approach is feasible.
Full-aperture long focal-length measurement based on divergent beam
Authors: Luo Jia , Bai Jian , Wang Kaiwei 
Published: February 2016

Abstract
A new method for long focal-length measurements is proposed. In this method, we employ divergent beam and two Ronchi gratings of different periods, as the alternative to collimated beams and two identical gratings in traditional method, to realize achieve higher accuracy. Moreover, with divergent beam, the full-aperture measurement is easily realized when detect large diameter lens. The experiments demonstrated the proposed method features high accuracy and repeatability.
The optical design of highly efficient cold shield in IR detector based on ASAP
Authors: Zhang Xianjing , Bai Jian , Yin Shuang 
Published: February 2016

Abstract
In order to obtain higher stray radiation suppression of a cold shield and enhance the cold shield efficiency of cooled infrared system, different configurations of the vanes inside cold shield are proposed. The effects of these configurations of vanes on stray radiation suppression are simulated and analysed by Advanced Systems Analysis Program (ASAP software), which not only trace ray by Monte Carlo method but also simulate the scattering of each surface. According to the analysis of results, vane plays an important role in the improvement of cold shield efficiency and the suppression of stray radiation. The cold shield with 6 vanes characterized by rounded-square hole, whose configuration is calculated based on the principle of laying out a set of vanes, suppresses 99.5% more stray radiation comparing to the original one without any vanes. However, considering that the cold shield with 6 vanes is complicated and difficult to fabricate, the cold shield with 3 vanes owing rounded-square hole is selected, since its stray radiation suppression level is acceptable.
High Accuracy Tiny Crack Detection in Metal by Low Frequency Electromagnetic Technique
Authors: Lou Weimin , Shen Changyu , Shentu Fengying , Li Guanghai , Chang Yu , Lu Xinyuan 
Published: February 2016

Abstract
A low frequency testing technology based on eddy current technique is proposed for detecting defects in some special equipment surface. A two-dimension model is built to simulate the distribution of low frequency (10 Hz) magnetic flux density nearby the surface of a metal plate. The influence of lift-off effect, coil diameter, crack shape on the measurement are discussed. And the crack measurement sensitivity of 0.6 pm was obtained.
Fast Perturbation Monte Carlo simulation for heterogeneous medium and its utilization in functional near-infrared spectroscopy
Authors: Song Y M , Li J W , Cai F H 
Published: February 2016

Abstract
In near-infrared spectroscopy, fiber optic probe is usually applied to incident light into the bio-sample and detect the spatial and temporal resolved optical signal re-emitted from the turbid medium. In this point-source-point-detector measurement system, seed Perturbation Monte Carlo (Pmc) method is an effective model to perform the forward simulation. In our study, the integration of parallel computing with graphics processing units(GPU) into the existing seed Pmc method substantially accelerate the speed of the original simulation. The GPU based seed Pmc provide an excellent solution for the application of fiber optic probe in both homogeneous a heterogeneous turbid medium.