681 research outputs found
A note on the planar surface sum of Heegaard splittings
No full textIn this paper, we prove that under some condition, (1) the planar surface sum of two unstabilized Heegaard splittings is unstabilized; (2) the self planar surface sum of an unstabilized Heegaard splitting is unstabilized. (C) 2016 Elsevier B.V. All rights reserved.Science Foundation of China University of Petroleum-Beijing [2462015YJRC034]; NSFC [11271058]; NSF-DMU [0915-150529]SCI(E)[email protected]; [email protected]
Forecasting the demand for frozen potatoes
No full textBulletin no. 755 Moscow, Idaho :University of Idaho, College of Agriculture, Agriculture Experiment Station, 1993-11-01. Author(s): Gao, Yanqing; Guenthner, Joseph F
FIGURE 2 in A supplement of the genus Homogryllacris Liu, 2007 (Orthoptera: Gryllacrididae Gryllacridinae) from China
No full textFIGURE 2. Homogryllacris brevispina Shi, Guo & Bian, 2012: male: A–B. pronotum: A. dorsal view, B. lateral view; C. head in frontal view; D–F. apex of abdomen: D. lateral view, E. apical view, F. ventral view; G. stridulatory pegs on second and third abdominal tergites in lateral view; female: H–I. subgenital plate in ventral view: H. from Hougu, Huangshan, Anhui, I. from Tianmushan, Lin'an, Zhejiang; J. ovipositor in lateral view.Published as part of Li, Yanqing, Dou, Yujie & Shi, Fuming, 2019, A supplement of the genus Homogryllacris Liu, 2007 (Orthoptera: Gryllacrididae Gryllacridinae) from China, pp. 577-582 in Zootaxa 4623 (3) on page 580, DOI: 10.11646/zootaxa.4623.3.10, http://zenodo.org/record/325856
THE HEEGAARD DISTANCES COVER ALL NONNEGATIVE INTEGERS
No full textWe prove two main results: (1) For any integers n >= 1 and g >= 2, there is a closed 3-manifold M-g(n) admitting a distance-n, genus-g Heegaard splitting, unless (g, n) = (2, 1). Furthermore, M-g(n) can be chosen to be hyperbolic unless (g, n) = (3, 1). (2) For any integers g >= 2 and n >= 4, there are infinitely many nonhomeomorphic closed 3-manifolds admitting distance-n, genus-g Heegaard splittings.NSFC [11171108, 11271058]SCI(E)[email protected]; [email protected]; [email protected]
Training parents and professionals to help children with autism in China: The contribution of behaviour analysis
No full textA training programme is presented with two parts. (1) Professional training is received by graduate students at the Institute for Mental Health of Beijing University, based on the principles of behaviour assessment and modification, radical behaviourism, and applied research methods. (2) Parent training focused oil parents with autistic children. using the behaviour analysis and modification methods. China has between 400,000 and 800,000 children with autism. In comparison to its fast economic growth the development of social welfare and social insurance systems are far behind. Once the child is diagnosed with autism, the parents or the primary caregivers of the child, not the government or the community, take the responsibility for the child's rehabilitation. The diagnosis of autism Was first introduced in China in 1982, and for years the work was based on clinical appearances and diagnosis. The main mission of child psychiatrists was early diagnosis, but there was little change obtained with autistic children. From the year 2000 more people were interested in rehabilitation rather than in diagnosis and medical treatments. Behaviour analysis methods are now extensively used in interventions in children with autism in this Country. There is a great need in China for this kind of work, but there are few professionals with the appropriate scientific knowledge and skills to,work with autistic children, These professionals will help to further develop the area of behaviour analysis in China.Psychology, MultidisciplinarySSCI1ARTICLE6523-5264
Dolicholobosa rotundata Bian, Zhu & Shi 2017
No full textDolicholobosa rotundata Bian, Zhu & Shi, 2017, emend. nov. (Fig.3, Map1) Doicholobosa rotundata Bian, Zhu, & Shi. 2017. Zootaxa. 4317 (1): 165. Material examined. Holotype: ♂, Suiyang, Guizhou, 16 August, 2011, coll. Lehong Zhao. Paratypes: 1♂, Suiyang, Guizhou, 11 August, 2011, coll. Lehong Zhao; 1♂, Suiyang, Guizhou, 12 August, 2011, coll. Liying Guo; 1♂, Sui- yang, Guizhou, 12 August, 2011, coll. Lehong Zhao; 2♂ 1♀, Dashahe, Daozhen, Guizhou, 16 August, 2011, coll. Lehong Zhao. Other specimens: 1♂ 1♀, Yangxi, Daozhen, Guizhou, 9 August, 2017, coll. Jiyuan Feng and Yanqing Li; 2♂ 2♀, Kuankuo town, Suiyang, Guizhou, 12 August, 2017, coll. Qidi Zhu and Yanqing Li; 1♂ 2♀, Kuankuo town, Suiyang, Guizhou, 12 August, 2017, coll. Jiyuan Feng and Yanqing Li; 23♂ 19♀, Kuankuo town, Suiyang, Guizhou, 12–13 August, 2017, coll. Jiyuan Feng and Yanqing Li; 2♂ 3♀, Kuankuo town, Suiyang, Guizhou, 14 August, 2017, coll. Qidi Zhu and Yanqing Li. Distribution. Guizhou (Daozhen, Suiyang).Published as part of Li, Yun, Mao, Shaoli & Shi, Fuming, 2021, Remarks on the genus Dolicholobosa Bian, Zhu & Shi, 2017 (Orthoptera Tettigoniidae: Meconematinae) with one new species from Guizhou, China, pp. 354-360 in Zootaxa 4990 (2) on pages 359-360, DOI: 10.11646/zootaxa.4990.2.8, http://zenodo.org/record/502667
Analysis of Thermal Insulation Thickness for a Container House in the Yanqing Zone of the Beijing 2022 Olympic and Paralympic Winter Games
No full textA large number of temporary housings (THs) were used in the Yanqing zone of the Beijing 2022 Olympic and Paralympic Winter Games. Taking a kind of container house (CH) used in Yanqing zone as a model, the objective of this paper is to analyze the effect of insulation thickness on heating energy consumption and corresponding carbon emission. The effect of service life of THs on economic thickness was also discussed. The simulation model was developed using EnergyPlus and the heating energy consumption with different insulation materials was simulated based on the meteorological parameters of the top of Xiaohaituo Mountain (2177.5 m) and the Olympic/Paralympic Village (950 m) in Yanqing zone. In the simulation process, the thermal insulation performance of the CH was enhanced with reference to the requirements of GB/T 51350-2019 Technical Standard for Nearly Zero Energy Buildings (NZEB) on one hand. Additionally, the insulation performance was evaluated in terms of payback period and carbon emission. On the other hand, the economic thickness of different insulation materials (rock wool (RW), extruded polystyrene (XPS), polyurethane (PU)) and the high performance vacuum insulation panel (HVIP)) for different service lives of CH was studied. Results show that the U-values of the envelope meeting the NZEB standard can decrease approximately 21.4–32.8% of the heating energy consumption, compared with the original envelope. When the service life of CH is extended to 20 years, the carbon emission is reduced by 18.5% and 29.5%. The payback period of HVIP is longest, up to 31.4 a, and the results of economic thickness show that when the service life of the CH ranges from 1 year to 20 years, the economic thickness range of RW is 47–235 mm, XPS is 41–197 mm, PU is 33–149 mm and HVIP is 4–18 mm at the altitude of 2177.5 m. At the altitude of 950 m, the economic thickness range of RW is 28–158 mm, XPS is 26–131 mm, PU is 25–118 mm, and HVIP is 2–12 mm. From an economic point of view, the service life of a CH has a significant impact on the choice of insulation thickness
Ecological Footprint Calculation Model Parameters - For Example in Beijing Urban
No full textIn this paper, the research start with two important parameters in the balance of factors and yield factors applied the ecological footprint model, select Beijing Fangshan, Pinggu and Yanqing as a research object, use the "Beijing Statistical Yearbook .2009" and the Beijing Municipal Land resources provided by the literature survey data to calculate the balance in Beijing's various land factor and Fangshan, Pinggu, Yanqing various types of land yield factor, and for the Beijing urbanization ecological carrying capacity guarantee.</jats:p
Rhombohedral-stacked bilayer transition metal dichalcogenides for high-performance atomically thin CMOS devices
No full textVan der Waals coupling with different stacking configurations is emerging as a powerful method to tune the optical and electronic properties of atomically thin two-dimensional materials. Here, we investigate 3R-stacked transition-metal dichalcogenides as a possible option for high-performance atomically thin field-effect transistors (FETs). We report that the effective mobility of 3R bilayer WS2 (WSe2) is 65% (50%) higher than that of 2H WS2 (WSe2). The 3R bilayer WS2 n-type FET exhibits a high on-state current of 480 μA/μm at Vds = 1 V and an ultralow on-state resistance of 1 kilohm·μm. Our observations, together with multiscale simulations, reveal that these improvements originate from the strong interlayer coupling in the 3R stacking, which is reflected in a higher conductance compared to the 2H stacking. Our method provides a general and scalable route toward advanced channel materials in future electronic devices for ultimate scaling, especially for complementary metal oxide semiconductor applications.This work was supported by the National Natural Science Foundation of China (grant nos. 91964106, 61874162, 62090034, and 61927901), the Fundamental Research Funds for the Central Universities (grant no. 2018KFYYXJJ069), the European Research Council (ERC) through the European Union’s Horizon 2020 research and innovation programme under grant agreement nos. 881603 (Graphene Flagship Core 3) and 770047 (PEP2D), the Strategic Priority Research Program of Chinese Academy of Sciences (grant no. XDB30000000), and the 111 Project (B18001)
Supervised chaos genetic algorithm based state of charge determination for LiFePO4 batteries in electric vehicles
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