bluuebunny/crossref_metadata_2025 huggingface dataset:
Statistical Learning and Social Competency: The Mediating Role of Language
Authors: Parks Kaitlyn M. A. , Griffith Laura A. , Armstrong Nicolette B. , Stevenson Ryan A.
Published: March 2020

The current study sought to examine the contribution of auditory and visual statistical learning on language and social competency abilities as well as whether decreased statistical learning abilities are related to increased autistic traits. To answer these questions, participants’ (N = 95) auditory and visual statistical learning abilities, language, social competency, and level of autistic traits were assessed. Although the relationships observed were relatively small in magnitude, our results demonstrated that visual statistical learning related to language and social competency abilities and that auditory learning was more related to autism symptomatology than visual statistical learning. Furthermore, the relationship between visual statistical learning and social competency was mediated by language comprehension abilities, suggesting that impairments in statistical learning may cascade into impairments in language and social abilities.
Disentangling sensorimotor and cognitive cardioafferent effects: A cardiac-cycle-time study on spatial stimulus-response compatibility
Authors: Larra Mauro F. , Finke Johannes B. , Wascher Edmund , Schächinger Hartmut
Published: March 2020

Cardiac-cycle-time effects are attributed to variations in baroreceptor (BR) activity and have been shown to impinge on subcortical as well as cortical processes. However, cognitive and sensorimotor processes mediating voluntary responses seem to be differentially affected. We sought to disentangle cardiac-cycle-time effects on subcortical and cortical levels as well as sensorimotor and cognitive processes within a spatial stimulus-response-compatibility paradigm employing startling stimuli of different modalities. Air-puffs and white noise-bursts were presented unilaterally during either cardiac systole or diastole while bilateral startle EMG responses were recorded. Modality, laterality and cardiac-cycle-time were randomly varied within-subjects. Cognitive and sensorimotor stimulus-response-compatibility was orthogonally varied between-subjects: Participants (N = 80) responded to the stimuli via left/right button-push made with either the contra- or ipsilateral hand (sensorimotor compatibility) on either the ipsi- or contralateral button (cognitive compatibility). We found that sensorimotor compatible reactions were speeded during systole whereas sensorimotor incompatible ones were prolonged. This effect was independent of cognitive compatibility and restricted to auditory stimuli. Startle was inhibited during systole irrespective of modality or compatibility. Our results demonstrate how differential cardiac-cycle-time effects influence performance in conflict tasks and further suggest that stimulus-response-compatibility paradigms offer a viable method to uncover the complex interactions underlying behavioral BR effects.
Virus Like Particles (VLP) as multivalent vaccine candidate against Chikungunya, Japanese Encephalitis, Yellow Fever and Zika Virus
Authors: Garg Himanshu , Mehmetoglu-Gurbuz Tugba , Joshi Anjali
Published: March 2020

Mosquito borne viral diseases are an emerging threat as evident from the recent outbreak of Zika virus (ZIKV) as well as repeated outbreaks of Chikungunya (CHIKV), Yellow fever (YFV) and Japanese encephalitis (JEV) virus in different geographical regions. These four arboviruses are endemic in overlapping regions due to the co-prevalence of the transmitting mosquito vector species Aedes and Culex. Thus, a multivalent vaccine that targets all four viruses would be of benefit to regions of the world where these diseases are endemic. We developed a potential Virus Like Particle (VLP) based multivalent vaccine candidate to target these diseases by using stable cell lines that continuously secrete VLPs in the culture supernatants. Moreover, inclusion of Capsid in the VLPs provides an additional viral protein leading to an enhanced immune response as evident from our previous studies with ZIKV. Immunization of Balb/c mice with different combinations of Capsid protein containing VLPs either as monovalent, bivalent or tetravalent formulation resulted in generation of high levels of neutralizing antibodies. Interestingly, the potential tetravalent VLP vaccine candidate provided strong neutralizing antibody titers against all four viruses. The 293 T stable cell lines secreting VLPs were adapted to grow in suspension cultures to facilitate vaccine scale up. Our stable cell lines secreting individual VLPs provide a flexible yet scalable platform conveniently adaptable to different geographical regions as per the need. Further studies in appropriate animal models will be needed to define the efficacy of the multivalent vaccine candidate to protect against lethal virus challenge.
Author Correction: Proteomic and Transcriptomic Changes in Hibernating Grizzly Bears Reveal Metabolic and Signaling Pathways that Protect against Muscle Atrophy
Authors: Mugahid D. A. , Sengul T. G. , You X. , Wang Y. , Steil L. , Bergmann N. , Radke M. H. , Ofenbauer A. , Gesell-Salazar M. , Balogh A. , Kempa S. , Tursun B. , Robbins C. T. , Völker U. , Chen W. , Nelson L. , Gotthardt M.
Published: March 2020

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Rapid and simultaneous analysis of twelve virulence factor genes by a microfluidic-CFPA chip for identifying diarrheagenicEscherichia coli
Authors: Yang Bin , Fan Yiling , Li Yang , Yan Jun , Fang Xueen , Kong Jilie
Published: March 2020

An integrated microfluidic system based on circular fluorescent probe-mediated isothermal nucleic acid amplification for identification of five diarrheagenicEscherichia colistrains has been developed.
Synthesis of difluoromethyl and deuterium-labeled difluoromethyl thioethers from aliphatic electrophiles
Authors: Ding Tianqi , Jiang Lvqi , Yi Wenbin
Published: March 2020

A one-pot difluoromethylthiolation of alkyl electrophiles with thiourea and diethyl bromodifluoromethylphosphonate is described. By changing the “H” source to most commonly used “D” source CD3OD and D2O, this strategy enables efficient synthesis of SCF2D-substituted molecules in good yields with high levels of D incorporation.
2D Fe-doped NiO nanosheets with grain boundary defects for the advanced oxygen evolution reaction
Authors: Dong Yin , Yang Juntao , Liu Yujie , Wang Yao , Dong Zhun , Cui Meilin , Li Mingxuan , Yuan Xiaolin , Zhang Xin , Dai Xiaoping
Published: March 2020

NiFe0.1O with grain boundary defects possesses a smaller ECSA (Cdl = 3.23 mF cm−2) than other samples. However, NiFe0.1O shows the highest electrocatalytic OER performance.
Chitosan and pectin core–shell beads encapsulating metformin–clay intercalation compounds for controlled delivery
Authors: Rebitski Ediana Paula , Darder Margarita , Carraro Raffaele , Aranda Pilar , Ruiz-Hitzky Eduardo
Published: March 2020

Clay–metformin intercalation compounds as a reservoir in biopolymer core–shell beads as an example of targeted controlled release systems for oral drug administration.
Intercalation chemistry and thermal characteristics of layered double hydroxides possessing organic phosphonates and sulfonates
Authors: Ogino Isao , Hirayama Yuki , Mukai Shin R.
Published: March 2020

The distinct roles of organic sulfonates that enable delamination in water and formation of microporous structures via thermal activation are elucidated.
Structural analysis of dehydrated gibbsite-based layered double hydroxides Li–Al–X (X = F−, Cl−, Br−, I−, OH−, NO3−, CO32−, and SO42−) by DFT calculations
Authors: Barbosa Anna Carolina de A. , Fonseca Carla G. , Wypych Fernando , Leitão Alexandre A.
Published: March 2020

Ab initio calculations were performed in order to discuss the structural modifications derived from anion exchange in Li–Al–Cl LDH, a compound formed by the treatment of gibbsite with aqueous lithium chloride (LiCl).
Molecular simulation of the shape deformation of a polymersome
Authors: Chakraborty Kaushik , Shinoda Wataru , Loverde Sharon M.
Published: March 2020

Coarse-grained simulations characterizing the molecular level response during contraction of a polymer vesicle.
Understanding the limitations of NIR-to-visible photon upconversion in phthalocyanine-sensitized rubrene systems
Authors: Radiunas Edvinas , Raišys Steponas , Juršėnas Saulius , Jozeliūnaitė Augustina , Javorskis Tomas , Šinkevičiūtė Ugnė , Orentas Edvinas , Kazlauskas Karolis
Published: March 2020

The low statistical probability factor of the rubrene emitter (f = 15.5 ± 3%) was determined to be the prime TTA-UC efficiency-limiting factor.
A mitochondria-targeted fluorescent probe for hypochlorite sensing and its application in bioimaging
Authors: Yang Qing , Zhong Xiuli , Chen Yingshuang , Yang Jing , Jin Can , Jiang Yuliang
Published: March 2020

A coumarin-diaminomaleonitrile derivative was prepared and used for detecting OCl− in living cells and zebrafish. Its high selectivity, sensitivity and low toxicity indicate that it is an ideal tool for biological applications.
Correction: Metal salt assisted electrospray ionization mass spectrometry for the soft ionization of GAP polymers in negative ion mode
Authors: Muyizere Theoneste , Zheng Yajun , Liu Hongni , Zhao Jia , Li Jin , Lu Xianming , Austin Daniel E. , Zhang Zhiping
Published: March 2020

Correction for ‘Metal salt assisted electrospray ionization mass spectrometry for the soft ionization of GAP polymers in negative ion mode’ by Theoneste Muyizere et al., Analyst, 2020, 145, 34–45.
Engineering red-emitting multi-functional nanocapsules for magnetic tumour targeting and imaging
Authors: Wang Julie Tzu-Wen , Martino Umberto , Khan Rehan , Bazzar Maasoomeh , Southern Paul , Tuncel Dönüş , Al-Jamal Khuloud T.
Published: March 2020

Self-red-emitting magnetic PLGA-PEG nanocapsules for optical imaging and magnetic tumour targeting.
Air and water stable secondary phosphine oxides as diazaphospholene precatalysts
Authors: Lundrigan Travis , Tien Chieh-Hung , Robertson Katherine N. , Speed Alexander W. H.
Published: March 2020

Secondary phosphine oxides, which are air and water stable, and purifiable by chromatography generate phosphenium or phosphorus hydride catalysts in situ.
Evidence of anomalous conventional and spontaneous exchange bias, high coercivity in Fe doped NiCr2O4 spinel
Authors: Pandey G. C. , Nemkovski K. , Su Y. , Rath Chandana
Published: March 2020

NiCr2−xFexO4 (x = 0 and 0.2) polycrystalline ceramics have been synthesized successfully through a simple co-precipitation technique to study the evolution of structural and magnetic properties by doping Fe.
Metal-dependent photosensitivity of three isostructural 1D CPs based on the 1,1′-bis(3-carboxylatobenzyl)-4,4′-bipyridinium moiety
Authors: Liu Jinjian , Lu Yiwei , Lu Wenbo
Published: March 2020

The comparison of the photochromic behaviors of three CPs indicates that metal ions play an important role in regulating their photochromic properties.
Cobalt complexes of redox noninnocent azo-aromatic pincers. Isolation, characterization, and application as catalysts for the synthesis of quinazolin-4(3H)-ones
Authors: Sinha Suman , Das Siuli , Mondal Rakesh , Mandal Sutanuva , Paul Nanda D.
Published: March 2020

Herein we report synthesis and characterization of three new cobalt(ii)-complexes of redox noninnocent arylazo ligands and unveil their catalytic application towards the synthesis of a variety of substituted quinazolin-4(3H)-ones.
Enhanced uptake of glyoxal at the acidic nanoparticle interface: implications for secondary organic aerosol formation
Authors: Shi Qiuju , Zhang Weina , Ji Yuemeng , Wang Jiaxin , Qin Dandan , Chen Jiangyao , Gao Yanpeng , Li Guiying , An Taicheng
Published: March 2020

Glyoxal (GL) exhibits a preferential tendency to the acidic nanoparticle interface, and sulfuric acid (SA) has a catalytic effect on hydration reaction of glyoxal in the aqueous phase.
Structural diversity, bioactivities, and biosynthesis of natural diterpenoid alkaloids
Authors: Shen Yong , Liang Wen-Juan , Shi Ya-Na , Kennelly Edward J. , Zhao Da-Ke
Published: March 2020

Diterpenoid alkaloids, originating from the amination of natural tetracyclic diterpenes, are a diverse class of compounds having complex structural features with many stereocenters.
A new fluorescent probe for sensing of biothiols and screening of acetylcholinesterase inhibitors
Authors: Wu Shengjun , Li Yuge , Deng Tao , Wang Xiaojuan , Hu Shiyou , Peng Guiyuan , Huang Xin-an , Ling Yanwu , Liu Fang
Published: March 2020

An axial N2O-type BODIPY probe has been proposed for sensitive and selective sensing of biothiols and screening of AChE inhibitors using a fluorescence turn-on assay.
Characterization of the promiscuous N-acyl CoA transferase, LgoC, in legonoxamine biosynthesis
Authors: Maglangit Fleurdeliz , Alrashdi Saad , Renault Justine , Trembleau Laurent , Victoria Catherine , Tong Ming Him , Wang Shan , Kyeremeh Kwaku , Deng Hai
Published: March 2020

More than 500 siderophores are known to date, but only three were identified to be aryl-containing hydroxamate siderophores, legonoxamines A and B from Streptomyces sp. MA37, and aryl ferrioxamine 2 from Micrococcus luteus KLE1011.
Combination of PEG-decorated black phosphorus nanosheets and immunoadjuvant for photoimmunotherapy of melanoma
Authors: Wan Shiyu , Zhang Boya , Li Sai , He Bin , Pu Yuji
Published: March 2020

A combination of PEG-stabilized black phosphorus nanosheets and immunoadjuvant imiquimod (R837) realizes efficient photoimmunotherapy of melanomas.
Crystal actuator based on a thermal phase transition and photothermal effect
Authors: Hagiwara Yuki , Taniguchi Takuya , Asahi Toru , Koshima Hideko
Published: March 2020

High frequency mechanical bending of the crystal was achieved based on the photothermal effect upon light irradiation.
Opto-electronic coupling in semiconductors: towards ultrasensitive pressure sensing
Authors: Nguyen Thanh , Dinh Toan , Phan Hoang-Phuong , Nguyen Tuan-Khoa , Md Foisal Abu Riduan , Nguyen Nam-Trung , Dao Dzung Viet
Published: March 2020

A novel concept of opto-electronic coupling in semiconductor heterojunctions for pressure sensing is proposed. By using non-uniform illumination of visible light coupling with tuning current, performance of the pressure sensor is enormously enhanced.
A novel histidine–tryptophan–ketoglutarate formulation ameliorates intestinal injury in a cold storage and ex vivo warm oxygenated reperfusion model in rats
Authors: Chen Zhiquan , Kebschull Linus , Föll Daniel Arno , Rauen Ursula , Hansen Uwe , Heitplatz Barbara , Hessler Michael , Senninger Norbert , Vogel Thomas , Mohr Annika , Becker Felix
Published: March 2020

Aim: The present study aims to evaluate protective effects of a novel histidine–tryptophan–ketoglutarate solution (HTK-N) and to investigate positive impacts of an additional luminal preservation route in cold storage-induced injury on rat small bowels.

Methods: Male Lewis rats were utilized as donors of small bowel grafts. Vascular or vascular plus luminal preservation were conducted with HTK or HTK-N and grafts were stored at 4°C for 8 h followed by ex vivo warm oxygenated reperfusion with Krebs–Henseleit buffer for 30 min. Afterwards, intestinal tissue and portal vein effluent samples were collected for evaluation of morphological alterations, mucosal permeability and graft vitality.

Results: The novel HTK-N decreased ultrastructural alterations but otherwise presented limited effect on protecting small bowel from ischemia–reperfusion injury in vascular route. However, the additional luminal preservation led to positive impacts on the integrity of intestinal mucosa and vitality of goblet cells. In addition, vascular plus luminal preservation route with HTK significantly protected the intestinal tissue from edema.

Conclusion: HTK-N protected the intestinal mucosal structure and graft vitality as a luminal preservation solution. Additional luminal preservation route in cold storage was shown to be promising.
Association between serum adiponectin concentrations and chronic obstructive pulmonary disease: a meta-analysis
Authors: Lin Yi-Hua , Jiang Tian-Xiang , Hu Su-Xian , Shi Yong-Hong
Published: March 2020

Background: Adiponectin has been implicated to play a role in the pathophysiology of chronic obstructive pulmonary disease (COPD). Many studies have assessed serum adiponectin concentrations in COPD patients. However, results from different reports were not consistent. To assess the association of serum adiponectin concentrations and COPD, a meta-analysis was performed.

Methods: PubMed, Embase, Web of Science and Cochrane Library were searched for eligible studies. Data were extracted, and then standard mean differences (SMDs) and 95% confidence intervals (CI) were calculated.

Results: Thirteen studies involving a total of 1131 cases and 689 controls were included in this meta-analysis. Combined data indicated that the serum adiponectin levels were higher in COPD patients than those in controls (SMD: 1.09, 95% CI [0.73–1.45], P < 0.001). In the subgroup analyses by disease period, there were similar results in stable COPD patients (SMD: 0.77, 95% CI [0.47–1.07], p <0.001; I2 = 83.9%, P < 0.001), AECOPD patients (SMD: 2.51, 95% CI [0.71–4.30], P = 0.006; I2 = 95.2%, P < 0.001) and mixed COPD patients (SMD: 1.21, 95% CI [0.67–1.75], P < 0.001). Furthermore, the serum adiponectin levels were higher in AECOPD patients than those in stable COPD patients (SMD: 1.06, 95% CI [0.13–1.99], P = 0.026).

Conclusions: This meta-analysis indicates that patients with COPD have higher serum adiponectin concentration than healthy controls.
LncRNA MIR155HG contributes to smoke-related chronic obstructive pulmonary disease by targeting miR-128-5p/BRD4 axis
Authors: Song Jie , Wang Qihu , Zong Liguo
Published: March 2020

Chronic obstructive pulmonary disease (COPD) is a common airway disease characterized by an exaggerated pulmonary inflammatory response. Long noncoding MIR155 host gene (lncRNA MIR155HG) has been identified to be related to the macrophage polarization in COPD. However, the detailed function of MIR155HG in cigarette smoke (CS)-mediated COPD remains largely unknown. The expression level of MIR155HG was elevated while miR-218-5p was decreased in lung tissues of smokers without or with COPD, especially in smokers with COPD, and cigarette smoke extract (CSE)-treated human pulmonary microvascular endothelial cell (HPMECs) in a dose- and time-dependent manner. Then, functional experiments showed that MIR155HG deletion could reverse CSE exposure-induced apoptosis and inflammation in HPMECs. MiR-218-5p was confirmed to be a target of MIR155HG and rescue assay showed miR-218-5p inhibitor attenuated the inhibitory action of MIR155HG knockdown on CSE-induced HPMECs. Subsequently, miR-218-5p was found to target bromodomain containing 4 (BRD4) directly, and miR-218-5p overexpression overturned CSE-induced injury of HPMECs via regulating BRD4. Additionally, co-expression analysis indicated MIR155HG indirectly regulated BRD4 expression in HPMECs via miR-218-5p. Thus, we concluded that MIR155HG contributed to the apoptosis and inflammation of HPMECs in smoke-related COPD by regulating miR-128-5p/BRD4 axis, providing a novel insight on the pathogenesis of COPD and a therapeutic strategy on COPD treatments.
Hypoxia-induced small extracellular vesicle proteins regulate proinflammatory cytokines and systemic blood pressure in pregnant rats
Authors: Dutta Suchismita , Lai Andrew , Scholz-Romero Katherin , Shiddiky Muhammad J. A. , Yamauchi Yusuke , Mishra Jay S. , Rice Gregory E. , Hyett Jon , Kumar Sathish , Salomon Carlos
Published: March 2020

Small extracellular vesicles (sEVs) released from the extravillous trophoblast (EVT) are known to regulate uterine spiral artery remodeling during early pregnancy. The bioactivity and release of these sEVs differ under differing oxygen tensions and in aberrant pregnancy conditions. Whether the placental cell-derived sEVs released from the hypoxic placenta contribute to the pathophysiology of preeclampsia is not known. We hypothesize that, in response to low oxygen tension, the EVT packages a specific set of proteins in sEVs and that these released sEVs interact with endothelial cells to induce inflammation and increase maternal systemic blood pressure. Using a quantitative MS/MS approach, we identified 507 differentially abundant proteins within sEVs isolated from HTR-8/SVneo cells (a commonly used EVT model) cultured at 1% (hypoxia) compared with 8% (normoxia) oxygen. Among these differentially abundant proteins, 206 were up-regulated and 301 were down-regulated (P < 0.05), and they were mainly implicated in inflammation-related pathways. In vitro incubation of hypoxic sEVs with endothelial cells, significantly increased (P < 0.05) the release of GM-CSF, IL-6, IL-8, and VEGF, when compared with control (i.e. cells without sEVs) and normoxic sEVs. In vivo injection of hypoxic sEVs into pregnant rats significantly increased (P < 0.05) mean arterial pressure with increases in systolic and diastolic blood pressures. We propose that oxygen tension regulates the release and bioactivity of sEVs from EVT and that these sEVs regulate inflammation and maternal systemic blood pressure. This novel oxygen-responsive, sEVs signaling pathway, therefore, may contribute to the physiopathology of preeclampsia.
Foreground segmentation using multiscale convolutional neural network
Authors: Fu Hui‐Ni , Wang Ben‐Zhang , Liu Heng‐Zhu
Published: March 2020

Foreground segmentation is to segment moving objects from a video or camera. Many approaches have been proposed to perform background subtraction. However, these algorithms could not handle complex scenes like illumination changes, dynamic background and camouflage etc. In this Letter, the authors propose a robust end‐to‐end convolutional neural network with multiscale features to address these problems. They use only a few training samples with RGB channels and output the corresponding foreground mask, which could save millions in labelling ground‐truth for the big dataset. They evaluate their model using Change Detection 2014 dataset, and results outperformed other state‐of‐the‐art methods with F‐measure of 0.982 with ∼30 fps processing speed.
Volumetric SAR near‐field upsampling and basebanding
Authors: Elgy J. , Andre D. , Finnis M.
Published: March 2020

Highly sampled imagery offers many benefits to the radar practitioner, ranging from easier image coregistration to simple visual appeal. However, it is often overlooked due to the computational burden forming such an image imposes. Fast image formation typically imposes restrictions on the imaging scenario, e.g. synthetic aperture radar (SAR) far‐field, and exploits parallelism through the use of modern multi‐core architecture. Imposing a SAR near‐field requirement on the image formation limits the applicability of several faster algorithms, thus there is a need to create a general process to achieve highly sampled imagery, regardless of the imaging regime. In this Letter, a method for accurately upsampling near‐field (SAR) imagery is presented. This is applicable to both SAR near‐field and SAR far‐field scenarios. The methodology is discussed, and an example is provided in the form of a SAR near‐field volumetric image of a miniature tank. The limitations to the approach are discussed and prospects for future work given.
Compact wideband differential filtering power divider based on three‐line coupled structure with lumped elements
Authors: Dong Jiancheng , Shi Jin , Xu Kai
Published: March 2020

A wideband differential filtering power divider using three‐line coupled structure with multiple lumped elements is proposed. The equal power division ratio, filtering response, isolation and common‐mode suppression are mainly derived from the symmetrical structure, three‐line coupled lines with capacitors, resistors and the short lines along the vertical symmetrical line, respectively. Compared to the reported differential filtering power dividers, the proposed design shows advantages of wide bandwidth, compact size and low insertion loss (IL). A prototype with the small size of 0.5λg × 0.08λg (λg is the guided wavelength at the centre frequency) was designed for demonstration, which exhibits the 3 dB fractional bandwidth of 79.2% and the minimum IL of 0.48 dB.
Segmentation techniques for early cancer detection in red blood cells with deep learning‐based classifier—a comparative approach
Authors: Shemona Jeya Sudharsan , Chellappan Agees Kumar
Published: March 2020

Red Blood Corpuscles called Erythrocytes are the most important element in blood composition which is mainly responsible in all living cells. To detect the cancer cell various methods are employed. In this paper, proper identification of cancer cells from unaffected RBCs are detected. The proposed novel method called Online Region Based Segmentation (ORBS) method is done that is used to find the regions of corpuscles. By using properties, metric is formulated for determination of shape which is abnormal in blood cells. Overall accuracy of 96.9% is obtained using proposed ORBS method and deep learning classification (DLC) method has accuracy of 97.1% that helps to diagnose cancer cells using feature extraction process done automatically. Sensitivity, specificity and precision values of the proposed segmentation method is found to be 96.7%, 95.6% and 98.4% respectively. The computation time was found as 22 seconds. Closeness of Proposed method in relative to True Positive values at the ROC curve indicates the performance as higher. Comparative analysis is made with ResNet‐50 based on the different testing and training data at rate of 90%−10%, 80%−20% and 70%−30% respectively, which proves the robustness of proposed research work. Experimental results prove proposed system effectiveness compared with other detection methods.
Behavioural validity of driving simulators for prototype HMI evaluation
Authors: Spyridakos Panagiotis D. , Merat Natasha , Boer Erwin R. , Markkula Gustav M.
Published: March 2020

In‐vehicle interfaces are now part of the vast majority of production vehicles. Such interfaces need to be thoroughly evaluated to ensure they do not pose any risks to the drivers using them. Driving simulators have extensively been used in such a context, yet their reliability in terms of how realistic a driving behaviour they elicit is still in question. An investigation on driving simulator behavioural validity in the context of prototype human–machine interface evaluation is presented in this study. Using data collected in a dual setting driving study (driving simulator and real world), as well as results from existing related literature, a comparison between driving behaviour in different types of driving simulators and in reality was carried out, for a variety of behavioural metrics. The results are presented in the form of a ‘validity matrix’ that aggregates the level of behavioural validity different simulator settings can achieve for different behavioural metrics.
Time‐aware gated recurrent unit networks for forecasting road surface friction using historical data with missing values
Authors: Pu Ziyuan , Cui Zhiyong , Wang Shuo , Li Qianmu , Wang Yinhai
Published: March 2020

An accurate road surface friction forecasting algorithm can allow travelers and managers to schedule trips and maintenance activities based on the road weather condition to enhance traffic safety and efficiency in advance. Previously, scholars developed multiple forecasting models to predict road surface conditions using historical data. However, historical dataset used for model training may have missing values caused by multiple issues, e.g. the data collected by on‐vehicle sensors may be influenced when vehicles cannot travel due to high economic and labor cost or weather‐related issues. The missing values in the road surface condition dataset can damage the effectiveness and accuracy of the existing prediction methods. This study proposed a road surface friction forecasting algorithm by employing a time‐aware Gated Recurrent Unit (GRU‐D) networks that integrate a decay mechanism as extra gates of the GRU to handle the missing values and forecast the road surface friction in future periods simultaneously. The evaluation results present that the proposed GRU‐D networks outperform all selected baseline algorithms. The impacts of missing rate on predictive accuracy, learning efficiency, and learned decay rates are investigated as well. The findings can help improve the forecasting accuracy and efficiency of road surface friction prediction using historical data with missing values, therefore mitigating the negative impact of wet or icy road conditions on traffic safety and efficiency.
Gridded parasitic patch stacked microstrip array antenna for 60 GHz band
Authors: Bondarik Alexander , Sjöberg Daniel
Published: March 2020

An array antenna design based on a gridded parasitic patch stacked microstrip antenna element is presented. The radiating part in the top layer of one antenna element has nine rectangular metal patches placed in a grid with three rows and three columns with a separation of 0.1 mm between the patches. Two means of realising the array are investigated. In a regular concept, the parasitic patches of individual elements are placed next to each other, forming on the top layer a uniform grid of parasitic patches with six rows and six columns. In an alternative concept named as shared array, neighbouring antenna elements share one row and one column of parasitic patches, forming on the top layer a uniform grid of parasitic patches with five rows and five columns. The antenna arrays are designed for the 60 GHz band. The measured bandwidth is 13.8 GHz for the single antenna, 15.3 GHz for the array, and 12.4 GHz for the shared array. The measured realised gain at 60 GHz is 6 dBi for the single antenna, 11 dBi for the array, and 10.5 dBi for the shared array. The measured radiation patterns have good agreement with simulations.
Renewables integration grid study for the 2030 Japanese power system
Authors: Kuwahata Rena , Merk Peter , Wakeyama Tatsuya , Pescia Dimitri , Rabe Steffen , Ichimura Shota
Published: March 2020

This study reports the methodology and results of a renewables (REs) integration grid study for the 2030 Japanese power system. In light of the Japanese energy policy outlook for 2030, two scenarios were compared: the government's target scenario with 22–24% RE penetration (64 GW solar and 10 GW wind), and a scenario with higher RE penetration (100 GW solar and 36 GW wind). The impact of these two RE integration scenarios on the grid in terms of frequency stability and power flows were simulated and compared. The evaluation outcomes showed that a RE penetration more ambitious than the government's plan can be achieved without compromising the evaluated elements of grid security and without additional technical measures in situations with at least up to 62% variable REs, i.e. wind and solar, instantaneous penetration in western Japan and at least up to 36% in eastern Japan. Furthermore, technical solutions like soliciting fast frequency response from solar and wind power plants, and setting a system non‐synchronous penetration limit for grid management can be applied to improve grid security for higher RE penetrations.
Joint 2-D angles and time delay estimation of coherent wideband signals
Authors: Li Xiangzhi , Cui Weijia , Xu Haiyun , Yang Songtao , Li Hao , Zhang Yankui , Ba Bin
Published: March 2020

Joint direction of arrival (DOA) and time delay (TD) estimation of wideband signals such as WIFI and mobile communication signals has to face the challenges aroused by multipath effect in indoor environments. New methods that can deal with coherent wideband signals with high estimation accuracy are necessary. To achieve localization when signals are coherent, this paper proposes a new joint estimation method which fully utilizes the subcarriers of wideband signals. This method could greatly extend the array aperture and accomplish the joint estimation through UCA-ESPRIT and one-dimensional (1-D) search. Simulation experiments are conducted to show the validity and efficiency of this method.
A survey of video capsule endoscope system based on wireless energy transfer technology
Authors: Fang Ting , Wu Xiongwei
Published: March 2020

The wireless capsule endoscope system allows clinicians to directly observe the image of the inner wall of the human gastrointestinal tract and obtain the most intuitive information at the lesion. Compared with traditional endoscopic detection technology, its painless, non-invasive, safe and convenient, full gastrointestinal detection features make this technology a research focus in the field of medical devices at home and abroad. As a new non-invasive detection technology for gastrointestinal diseases, the working time, image frame rate and image quality of the existing wireless capsule endoscope system cannot fully meet the needs in clinical applications. The cause of these problems lies in the capsule. The internal space of the speculum is limited, and only the button battery can be used as the energy source. Therefore, it is necessary to design a video capsule endoscope based on wireless energy transmission technology. This article is a review of Zhu Zhanquan, Xue Kaifeng, Lu Ruiqi and other scholars.
Rate-compatible LDPC convolutional codes over non-gaussian noise channel
Authors: Liu Qiang
Published: March 2020

This paper is aimed to study the characteristics of the underwater acoustic channel with non-Gaussian noise channel. And Gaussian mixture model (GMM) is utilized to fit the background noise over the non-Gaussian noise channel. Furthermore, coding techniques which use a sequence of rate-compatible low-density parity-check (RC-LDPC) convolutional codes with separate rates are constructed based on graph extension method. The performance study of RC-LDPC convolutional codes over non-Gaussian noise channel and the additive white Gaussian noise (AWGN) channel is performed. Study implementation of simulation is that modulation with binary phase shift keying (BPSK), and iterative decoding based on pipeline log-likelihood rate belief propagation (LLRBP) algorithm. Finally, it is shown that RC-LDPC convolutional codes have good bit-rate-error (BER) performance and can effectively reduce the impact of noise.
Coupling matrix synthesis of general chebyshev filters
Authors: Qi Lihua , Xing Dongqiu , Wang Rui , Qi Xinshe , Zhao Jing
Published: March 2020

A single optimization algorithm based on SolvOpt that synthesizes coupling matrices for cross-coupled microwave filters is presented. The rules for setting initial values of SolvOpt are proposed to find global minimum of the cost function. SolvOpt method provides faster convergence and higher accuracy to find the final solution compared with hybrid optimization algorithms. Application examples illustrate the excellent performance and the validity of this method.
Research on document digitization processing technology
Authors: Zhang Ruili , Yang Yanming , Wang Wenxiu
Published: March 2020

The digitalization of document information is the development direction of the digitalization of document information management, which involves various technologies such as digitalization technology, picture and text editing, storage format, etc. Through the PDF document loading display, change the page replacement storage, the technical page jump to achieve the PDF document programming control.
Data-driven integration evaluation from the perspective of Adaboost and its application in WeChat public number ranking
Authors: Gong Yicheng , Zhao Juan , Zhang Dongyang
Published: March 2020

The traditional comprehensive evaluation is difficult to model when dealing with large data with large parameters and complex structure, and it cannot adapt to the update of data. In order to improve this situation, this paper draws on the Adaptive Learning Adaboost perspective in statistical learning to develop a data-driven integrated evaluation model that updates the weight of sample weights and weak evaluation models with data. Three specific weak evaluation models were selected: data-driven Topsis method, principal component analysis method and factor analysis method. Taking the ranking of WeChat public account as an example, the results show that the accuracy of the integrated evaluation model is 88.57%, which is 17.14%, 31.43% and 28.57% higher than the data-driven Topsis method, principal component method and factor analysis method.
An improved semantic similarity algorithm based on HowNet and CiLin
Authors: Wang Ying , Feng Xiwei , Zhang Yue , Chen Haiming , Xing Lijie
Published: March 2020

This paper explores an improved method for the semantic similarity calculation of words combined with HowNet and CiLin. Firstly, we designing the algorithm based on HowNet’s sememe similarity improvement calculation, comprehensively considering the influence of each part of sememe on the overall meaning, and improving the calculation of word similarity based on HowNet by changing the specific calculation method of each part of sememe. At the same time, we adopt different strategies for the different results obtained in the similarity calculation of CiLin. The experimental RG data set proves that the modified Pearson coefficient of the method reaches 0.87.
Automatic labeling algorithms and their applications in weld seam of oil pipeline
Authors: Li Minghai , Fan Wenying , Li Qinyang , Meng Yuzhi
Published: March 2020

Building information model (BIM) technology has become an important tool for construction practitioners to improve the engineering design, construction and management. However, it has not been widely used in petrochemical industry, such as oil pipeline construction. This paper presents an automatic labeling algorithm based on BIM technology. We used simulated annealing algorithm to optimize the overlap of pipe weld label positions, resulting in the sequential pipe welds. We used this algorithm in oil pipeline construction and verified its automatic labeling effect on pipe welds.
VO and GPS integrated navigation algorithm based on plane constraint
Authors: Lv Chade , Zeng Qingxi , Liu Dehui , Qiu Wenqi
Published: March 2020

In view of the deficiencies of GPS in the urban environment, such as signal occlusion, multipath and Non-LOS, this paper proposes a solution that using a low-cost monocular camera instead of inertial navigation system to combine with GPS. Firstly, considering that the actual road conditions of the vehicle are mostly plane and in order to reduce the computational resources of visual odometer (VO), this paper establishes a VO solving model based on plane constraint; then the VO&GPS loose coupling model is proposed. The position error and yaw angle error of the two sensors are taken as input, and the errors are filtered by the adaptive Kalman filter. Experiments show that the positioning effect of VO&GPS loose coupling system is better than that of single GPS, and it can suppress the drift of VO, which can meet the positioning requirements when satellite signals are interfered in a short time.
Overview of clustering analysis algorithms in unknown protocol recognition
Authors: Liu Zhiguo , Ren Changqing , Cai Wenzhu
Published: March 2020

In the process of identifying unknown protocol of bit stream, the clustering of data sets of bit stream in the protocol is the basis of further identifying unknown protocol. Therefore, on the one hand, this paper analyses the classical clustering algorithms used in unknown protocol recognition from three perspectives: the whole process of clustering analysis, similarity measurement and clustering result evaluation. On the other hand, the development trend of clustering algorithm in unknown protocol recognition is summarized, and other problems in unknown protocol recognition can be solved by clustering algorithm according to the characteristics of bit stream data set, which can provide reference for future research work. Finally, the challenges faced by the Research Institute and the prospects for future work are given.
Research on robust audio zero watermarking algorithm based on discrete cosine transform
Authors: Wu Xiongwei , Fang Ting
Published: March 2020

This paper mainly uses the discrete cosine transform algorithm characteristics, combined with the “zero watermarking” embedding features, to improve the robustness of the watermark algorithm, to balance the uncoordinated relationship between robustness and transparency.
Grid text classification method based on DNN neural network
Authors: Huang Jutao , Zheng Jiesheng , Gao Shang , Liu Wenbin , Lin Jiaxin
Published: March 2020

With the rapid development of network technology, the electric power Internet of Things needs to face a large number of electronic texts and a large number of distributed data access and analysis requirements. If the system wants to complete accurate and efficient data analysis and build an existing data and service standard system covering the entire chain of energy and power business on the existing basis, it must implement massive electronic text retrieval, information extraction and classification in the power grid system. In order to achieve this purpose, a DNN neural network classification model is constructed to classify the text information of the power grid, and the effectiveness of the method is verified by experiments based on data from the substation information system.
An improved image segmentation algorithm based on the maximum class variance method
Authors: Qi Qianhui , Tian Yimin , Han Lili
Published: March 2020

Image segmentation is an important part of image processing. The result of image segmentation directly affects the effect of subsequent image processing. However the efficiency of the traditional maximum class variance method is low. This paper uses the cuckoo algorithm to optimize the traditional maximum class variance method to achieve a better segmentation effect. This image segmentation method combined with optimization theory can achieve the purpose of finding the optimal segmentation.
Experimental research on the sound recognition of the electric vehicle motor
Authors: Hu Dongmei , Xu Peiyun , Cao Cheng , Yan Xiaojun , Hu Zhihong , Song Zhihuan , Li Huibin
Published: March 2020

By synthetically applying order tracking method and acoustic holography method, the noise source of the electric vehicle motor was discerned in the bench test. According to profiling of the test data, the motor noise order tracking diagrams and sound holography contour maps were employed to draw the noise map of the electric vehicle motor. It was revealed that the low and medium frequency components of the motor’s noise are mainly related to the rotational passing frequency of the bearing rolling element and cage, as well as the doubling frequencies of the rotational frequencies of the rotor. The medium and high frequency components of motor’s noise are mainly related to motor’s loads and speeds. In the 1000-2500 r/min speed stage of the motor with load, the main order of motor’s noise is the 72nd order and in the speed stage of 3000-5000 r/min, motor’s noise is mainly the 15th, 18th and 26th orders. When the motor speed increases from 5000r/min to 8000r/min, the main order of motor’s noise is the fourth order. When the motor was accelerated in no-load operation, its noise characteristics are different from those of the motor with load. When the motor run at no load and low speed, the 16th and 72nd order are the main order of motor noise, while at high speed, the 2nd order of motor noise and the orders of motor switching frequency noise caused by frequency converter are the main order of motor noise. The above conclusions will give the assistance to further research on the acoustic characteristic of the electric vehicle motor.
Dynamical model of a new type of self-balancing tractor-trailer-bicycle
Authors: Zhuang Wei , Li Gaoming , Zhang Ruixin , Su Xiao , Huang Yonghua
Published: March 2020

In this paper, we focused on a Self-Balancing Tractor-Trailer-Bicycle(TTB) and developed an under-actuated dynamical model for the system. The bicycle is characterized with two parts, that is a tractor and a trailer, and considering the nonholonomic constrains from no-slipping contacts of its three wheels and the flat ground, we presented a dynamical model for the bicycle by using Chaplygin equation. The model suggest that the TTB should be an under-actuated system with three DOF (degree of freedom) and there are two driving-torque inputs. An inverse dynamics and a virtual prototype simulations are given to demonstrate the correctness of the proposed dynamical model.
A time prediction model for residents consumption level based on ARIMA and PCA
Authors: Su Zhongyu , Li Wei , Sun Yu , Guo Pengcheng
Published: March 2020

It is necessary but difficult to make a large number of observations on multiple variables reflecting the residents consumption level and collect a large amount of data for analysis to search for the rules. In this paper, a time prediction model for residents consumption level based on ARIMA and principal component analysis is proposed to solve this problem. Principal component analysis is firstly used to effectively reduce the number of indicators reflecting the residents consumption level. Combined with the ARIMA model, the residents consumption level is predicted. The results reflect the trend of residents consumption level towards the need for enjoyment and development materials on the basis of obtaining basic survival data.
Multi-time scale wind speed prediction based on WT-bi-LSTM
Authors: Xiang Jinyong , Qiu Zhifeng , Hao Qihan , Cao Huhui
Published: March 2020

The accurate and reliable wind speed prediction can benefit the wind power forecasting and its consumption. As a continuous signal with the high autocorrelation, wind speed is closely related to the past and future moments. Therefore, to fully use the information of two direction, an auto-regression model based on the bi-directional long short term memory neural network model with wavelet decomposition (WT-bi-LSTM) is built to predict the wind speed at multi-time scales. The proposed model are validated by using the actual wind speed series from a wind farm in China. The validation results demonstrated that, compared with other four traditional models, the proposed strategy can effectively improve the accuracy of wind speed prediction.
Research on multi-stage iterative model solving method with resource optimization configuration
Authors: Tian Qihua , Zhang Yurong , Dong Qunmei , Zhou Xiangman , Du Yixian
Published: March 2020

Aiming at the problem of unreasonable resource allocation in the existing coupling design iterative model based on efficiency constraint, the resource equilibrium strategy was introduced into the iterative model. In order to reduce the time cost of product development, a multi-stage iterative model with optimal resource allocation was constructed and the optimal resource allocation of each task group was obtained by solving this model. Taking the design and development process of an air purifier as an example, the validity of this model was verified. The research shows that after introducing resource equilibrium strategy into the iterative model based on efficiency constraint, the time cost of iterative mode in different stages decreases, and with the increase of the number of iteration stages, the time cost decreases first and then increases. The research results provide a theoretical basis for designers to reasonably select resource allocation mode and number of iteration stages in actual product development so as to optimize resource allocation and reduce development cost.