A New Hybrid Model Rotor Flux Observer and Its Application

A new hybrid model rotor flux observer, based on a new voltage model, is presented. In the first place, the voltage model of an induction machine was constructed by using the modeling method discussed in this paper and then the current model using a flux feedback was adopted in this flux observer. Secondly, the two models were com- bined via a filter and then the rotor flux observer was established. In the M-T synchronous coordinate, the observer was analyzed theoretically and several important functions were derived. A comparison between the observer and the traditional models was made using Matlab software. The simulation results show that the observer model had a better performance than the traditional model.

New hybrid rice combination—Xieyou 46

Hybrid rice combination Xieyou 46 was first bred by combining CMS line Xieqingzao A with restorer line Milyang 46 at CNRRI in 1983. It can be used as single season or late season new indica hybrid rice combination. Having passed provincial level yield trials in the following years, it was released in 1990 with the permission of Zhejiang Provincial Government, later on recommended as one of the top commercial hybrid rice combination by China State Science and Technology Commission. By the end of 1992, Xieyou 46 has been planted as a late season or single season hybrid ricc combination along the middle and lower reaches of the Yangtze River, and the planting area has reached 3.35 million ha. It has become one of the most important late season hybrid rice combinations in Zhejiang Province. Characteristics of Xieyou 46: Xieyou 46 has a suitable growth duration of 125-130 d as late season rice or 127-134 d as single season rice, 2-3 d shorter than those of Shanyou 6. It bas a compact plant type, high tilleri

Generating prototypical residential building geometry models using a new hybrid approach

Building prototyping has regularly been used in building performance analyses with statistically feasible models.The novelty of this research involves a new hybrid approach combining stratified sampling and k-means clustering to establish building geometry prototypes.The research focuses on residential buildings in Ningbo,China.Seventeen small residential districts(SRDs)containing 367 residential buildings were systemically selected for survey and data collection.The stratified sampling used building construction year as the main parameter to generate stratification.Floor numbers,shape coefficients,floor areas,and window-to-wall ratios were used as the four observations for k-means clustering.Based on this new approach,nine building geometry prototypes were identified and modelled.These statistically representative prototypes provide building geometrical information and characteristic-based evaluations for subsequent building performance analysis.

Study on Agronomic Characters and Storage Durability of a New Line of Endurable Storage Hybrid Rice Chucangyou No.1

[Objective] The aim of this study was to investigate the storage durability of a new line of endurable storage hybrid rice Chucangyou No.1 selected by endurable storage genes of Yunhui 290.[Method] Agronomic characters of the new line and the control II you 838 and Shanyou 63 were comparatively studied,and storage durability of the new line and indica,japonica or hybrid rice were also comparatively analyzed by the accelerated ageing test.[Result] Agronomic characters of the new line were excellent,and germination rate in the artificial accelerated ageing test was significantly higher than those in other materials.[Conclusion] Chucangyou No.1 has the better storage durability,which can be used in large scale of extention.

Source-sink Characteristics and the Translocation of Assi- milates in New Plant Type and Intersubspecific Hybrid Rice

Both new plant type (NPT) and intersubspecific hybrid rice (IHR) had large sink size (total number of spikelets per m2), however, poor grain filling limited their potential in the grain yield. Compared to the three-line indica hybrid of Shanyou 63 (CK), NPT and IHR showed higher photosynthetic potential, higher dry matter accumulation and higher ratio of dry weight to spikelets (total dry wt./total number of spikelets) from heading to harvest. But both exhibited a low export percentage and transfer ratio of assimilates, low partitioning of 14C to grains from labeled flag leaves, low harvest indices and low physiological activities (IAA content and activities of ATPase and starch synthase) of grains at early grain-filling stage. The physiological activities of grains at early filling stage were significantly correlated with the export percentage and transfer ratio of assimilates, ripened-grain percentage and grain plumpness (r = 0.85 - 0.95). The source-sink ratio (dry matter wt./spikelet and nonstructural carbohydrate/spikelet) at heading was positively correlated with physiological activities of grains (r = 0. 84 - 0. 97 ). It is suggested that low physiological activities of grains at early filling stage is attributed to low source-sink ratio at heading, and the low sink activity weakens the ability to remobilize assimilates into grains, and leads to poor grain filling in NPT and IHR.

Yields and Agronomic Characters of New Rice Hybrids Performed at Pine Bluff, Arkansas

Yields and agronomic characters of 35 new hybrids were tested at Pine Bluff, Arkansas in 2013. These hybrids were developed from 7 female parent sterile lines, UP-1s, UP-3s, 100s, 101s, 105s, 111s, and 113A, and 5 male parent restorer lines, PB2, PB5, PB12, PB13, and PB18. The inbred variety Francis, which is a popular variety in the rice production, was used as the check (CK). Results showed that the yields of 10 hybrids were 20.3% - 31.7% higher than that of CKFrancis. The yields of other 18 hybrids were 10.1% - 19.4% higher than CK, and the yields of rest of the hybrids were 2.5% - 9.2% higher than CK. Hybrid UP-3s/PB5 had the highest yield, 12,983.8 kg/hectare and over check by 31.7%. The yield of hybrid UP-3s/PB18 and 115A/PB18 were 12,333.7 kg/hectare and over check 25%. The yields of hybrid UP-1s/PB12 was 12,324.6 kg//hectare and over check 24.9%. The sterile lines UP-3s, 113A, 105s, and 101s have good combinability and the average grain yields of their hybrids were over CKby 21.5%, 20.34%, 17.2% and 16.2%, respectively. The restorer lines PB18, PB5, and PB12 have good combinability and the average grain yields of their hybrids were over CKby 19.9%, 18.4% and 16.2%, respectively. These results indicated that these top hybrids and their parents of the sterile lines and restorer lines might be used in the hybrid rice breeding and production in the future.

Experimental investigation and development of new correlation for influences of temperature and concentration on dynamic viscosity of MWCNT-SiO2(20-80)/20W50 hybrid nano-lubricant

In current research, MWCNT-SiO2/oil hybrid nano-lubricant viscosity is experimentally examined. By dispersing 0.05%, 0.1%, 0.2%, 0.4%, 0.8% and 1% volume of MWCNTs and SiO2 nanopartide into the engine oil SAE 20W50, the temperature and solid volume fraction consequences were studied. At 40 to 100 ℃ temperature, the viscosities were assessed. The results indicated Newtonian behavior for the hybrid nano-lubricant. Moreover, solid volume fraction augmentation and temperature enhanced the viscosity enhancement of hybrid nano-lubricant. At highest solid volume fraction and temperature, nano-lubricant viscosity was 171% greater compared to pure 20W50. Existed models lack the ability to predict the hybrid nano-lubricant viscosity. Thus, a new correlation regarding solid volume fraction and temperature was suggested with R-squared of 0.9943.

A new method to identify and improve the purity of hybrid rice with herbicide resistant gene

There is a close relationship between the hy—brid rice production and seed purity.Two-linehybrid rice with higher heterosis is producedthrough the hybridization between a photo-thermo sensitive genetic male sterile(GMS) rice line and a paternal variety.But the fertili-

Shan-You 10-A New Combination of Hybrid Rice

Hybrid rice Shan-You 10 was first madein 1982 by combining Zhen-Shan 97A,a wildcytoplasmic male sterile line used widely inChina,with Milyang 46 introduced from IRRIin 1981.In the following years,this combi-nation was tested and passed through differentformal tests including yield potential tests,

A Natural Hybrid of Cymbidium From China

An intermediate between Cymbidium lancifolium Hook. and C.ensifolium (L.) Sw. is described as a new hybrid of them: C.× oblancifolium I. J. Liu et S. C. Chen. It is widespread in southern Sic huan Province in southwestern China . After being introduced into cultivation, it remains steady in its character an d indicates remarkable growth. It also exhibits great aesthetic values.

Innovation on Distant Hybridization of Saline-tolerant Mud Flat Spartina and Rice Germplasm

To explore saline-tolerant high yield Spartina and rice germplasm resources,innovate upon distant hybridization technology,and develop new saline-tolerant mud flat Spartina germplasm,autonomous patent for invention was used to study distant hybridization of Spartina and rice in 2005- 2016. The study adopted tidal flat planting screening,phenotypic screening,molecular marker assisted selection,to find biological evidences of new germplasm,and also applied crossbreeding,conventional breeding,and molecular breeding,to select new saline-tolerant Spartina and rice varieties. With 12 years of efforts,the team developed 1498 crossbreeding combinations and established pedigree file and seed bank,tested 307 crossbreeding materials(57 hybrid seeds showed parental genetic components of Spartina and Rice); obtained Spartina/ Rice distant hybridization and seed setting,transplanting,hybridization material economic traits,and molecular biological experimental evidences; Rice♀× Spartina ♂ hybridization success rate of 1. 04- 1. 39%; obtained authorization of patent for invention of Distant Hybridization Methods for Spartina and Rice; formulated procedures for high yield cultivation of Spartina-Rice,planted 33. 33 hm2Spartina-Rice in coastal saline and alkaline land,cultivated 10 new saline-tolerant Spartina-Rice varieties,and the rice yield up to 5. 925- 8. 28 t / hm2. Results indicate that Spartina-Rice is saline-tolerant high yield rice germplasm,developed through sexual hybridization,conventional breeding,and molecular breeding technologies,and is optimal crop for saline and alkaline land. Success of Spartina-Rice solves the problem of saline-tolerant crop badly for transformation of saline and alkaline land,the problem of feeds for herbivores,as well as problem of environmental pollution resulted from straw burning. Besides,it is of essential scientific significance for resource utilization,increase of agricultural efficiency,grain security,and farmland strategy,so it has broad application prospect.

新型混合式贯通牵引供电系统及其复合控制策略

电分相与负序等电能质量问题是制约电气化铁路向高速化、重载化发展的桎梏。贯通牵引供电系统为消弭上述问题提供了契机,但既有贯通方案依然存在所需器件数目多、改造成本高、可靠性差等弊端。为此,在充分利用既有牵引变压器基础上,该文设计一种新型混合式贯通牵引供电装置。该装置通过共直流侧与功率均分手段有效抵消输入侧纹波功率,降低有源/无源器件数目与电容容量。同时,针对直流侧二次纹波与负荷功率冲击,提出一种输入端口复合控制策略,有效解决纹波传递与冲击波动问题。最后通过仿真与实验验证所提装置及其控制策略的可行性与可靠性。

A New Hesitant Fuzzy Multiple Attribute Decision Making Method with Unknown Weight Information

In this paper, we focus on a new approach based on new generalized hesitant fuzzy hybrid weighted aggregation operators, in which the evaluation information provided by decision makers is expressed in hesitant fuzzy elements (HFEs) and the information about attribute weights and aggregation-associated vector is unknown. More explicitly, some new generalized hesitant fuzzy hybrid weighted aggregation operators are proposed, such as the new generalized hesitant fuzzy hybrid weighted averaging (NGHFHWA) operator and the new generalized hesitant fuzzy hybrid weighted geometric (NGHFHWG) operator. Some desirable properties and the relationships between them are discussed. Then, a new algorithm for hesitant fuzzy multi-attribute decision making (HF-MADM) problems with unknown weight information is introduced. Further, a practical example is used to illustrate the detailed implementation process of the proposed approach. A sensitivity analysis of the decision results is analyzed with different parameters. Finally, comparative studies are given to verify the advantages of our method.

Study on Short Circuit Current Calculation of Power System with UHVDC and New Energy Source

With the development of power system, the level of short circuit current will increase accordingly. In general, the influence of the HVDC system and the new energy source is not considered in the calculation of the short circuit current. For the power grid that short circuit current level closes to the interrupting capacity of circuit breaker, it’s necessary to fully consider all kinds of influence factors, careful checking, so as to obtain more accurate calculation results of short circuit current. In 2018, two ±800 kV high-power Ultra High Voltage Direct Current (UHVDC) transmission projects will be connected with Shaanxi power grid, accompanied by a lot of concomitant fossil-fuel generating plants as power resource, and also a large number of new energy source, includes wind power generation and photovoltaic power generation. Around one of the UHVDC converter stations, short circuit current may exceed the withstand limit of some certain circuit breakers. In order to get more accurate short circuit current calculation results, three measures are used: 1) contrastive calculation and analysis by algorithm based on schemes and algorithm based on power flow;2) analysis the influence of UHVDC by electromagnetic transient and electromechanical transient hybrid simulation;3) considered a detailed model of Doubly Fed Induction Generator (DFIG) with low voltage ride through characteristics. The calculation results shows that: in the typical operation mode of Shaanxi power grid of 2018, the original calculation results by conventional calculation method are coincident with the results by considering the influence of algorithms, UHVDC and DFIG in large, in which: the results of the algorithm based on power flow are smaller than that of the algorithm based on schemes about 2 - 8 kA;the steady values of the short circuit current provided by UHVDC converterstation (includes rectifiers and smoothing capacitors) are about 0 - 3 kA;the steady values of the short circuit current provided by DFIG are about 0 - 5 kA. The calculation results can provide reference for the selection of the circuit breaker, and it can be verified by fault recording data in the future.

新时代 新征程 新伟业——大阅读时代图书馆高质量发展思考

结合近年来国内外图书馆的发展理念与创新实践,从形势与任务、使命与愿景、理念与范式、战略与路径4个维度,对大阅读时代图书馆高质量发展这一议题进行阐述与思考。

线椒新品种优美墨丽的选育

优美墨丽是以自交系15DP091做母本、自交系15DP089为父本杂交选育而成的深绿皮线椒杂交1代新品种。该品种植株生长健壮,株型紧凑,茎秆粗壮,叶片深绿厚实,果实线形,青熟果深绿色,熟果红色鲜亮且不变软。顺直,肉质肥厚,辣味浓厚,坐果集中,坐果能力强。在河南早春保护地、秋延保护地种植,全生育期168 d,属中早熟线椒品种。始花节位9~10节。株高65 cm左右,株幅65~70 cm。果实长26~30 cm,果实宽1.5~2.0 cm,果肉厚度0.20 cm,心室数平均2.5个。辣椒素含量(w,后同)32.8 mg·kg^(-1),维生素C含量958 mg·kg^(-1),平均单果质量20 g,平均667 m^(2)产量2686.7 kg。抗疫病、炭疽病、中抗病毒病,耐低温耐弱光。适合河南各地早春、秋延保护地及福建、江苏、四川、云南、山东、海南早春、秋延保护地和露地种植。2018年12月通过农业农村部非主要农作物品种登记。

辣椒新品种“金丰”的选育

“金丰”是以‘ND18-6’为母本、‘X4F’为父本选育而成的半直立无限生长型辣椒新品种。该品种株型紧凑,长势健壮,分枝均匀,叶小,始花节位12~13节,果实外形羊角形,果实(成熟前)颜色亮黄色,成熟果红色;果实为大果型,长度28 cm,直径3.5~4.0 cm,果肉厚0.3 cm,平均单果质量110 g。该辣椒有2.5个心室,容易坐果,生育期160 d。维生素C含量85.8 mg·(100g)^(-1),辣椒素含量12.8 mg·kg^(-1)。早春耐低温、弱光,抗疫病、CMV和TMV;中抗炭疽病和青枯病,丰产性较好,667 m^(2)平均产量3590.79 kg。适宜河南各地、海南、江苏、河北及山西早春保护地、露地、秋延保护地栽培。目前,在河南省及周边地区、江苏、河北等地累计推广种植1847 hm^(2)。2018年12月通过国家非主要农作物品种登记。

茄子新品种绿优优400的选育

绿优优400是以自交系L11-2014为母本、自交系L8-2014为父本杂交选育而成的早熟绿茄杂交1代新品种。该品种早熟不早衰,连续坐果能力强,抗逆性强;7片叶左右着生门茄。果皮亮绿不发白,果面光滑饱满,果实长卵圆形,横径11.3 cm、纵径21.4 cm,果肉浅绿色,肉质软糯,单果质量500 g左右。早春保护地种植,667 m^(2)产量可达10000 kg。田间抗青枯病、根腐病、黄萎病等土传病害,适宜江苏、河南等绿茄主产区保护地早春茬和露地种植。2023年9月获得国家植物新品种权证书。

The Supply-Side Structural Reforms——Adapting to and Leading China's New Normal

The Central Economic Working Conference proposed supplyside structural reforms which can be regarded as major innovations and necessary measures that adapt to and lead the new normal of economic development. The 13^(th) Five Year Plan is a critical period for the transformation of economic development patterns and economic restructuring, so clarifying the theoretical values and practical significances of the supply-side structural reforms, making a clear explanation of the scientific connotations and policy implications of these reforms from a scientific standpoint, and discussing concrete measures to promote the reforms against the background of the economic new normal not only has academic values but also has important practical implications. Viewed from the practical standpoint of China' s new normal and through analyzing the basic national conditions, this article proposes a roadmap for implementing the proposed reforms and points out that only by doing well in the hybrid operation of "addition, subtraction, multiplication and division", based on the framework of the "five policy pillars", an innovative path of the supply-side structural reforms with Chinese characteristics can be paved.

远缘杂交仁用杏新品种京仁5号的选育

京仁5号通过仁用杏品种龙王帽与扁桃品种意大利2号远缘杂交育成。果实卵圆形,果顶圆凸,在北京地区7月中下旬成熟;成熟时果皮底色黄色,阳面着片状红色,平均单果质量30.5 g;果核卵圆形,壳面较平滑,平均单核质量2.54 g,纵横侧径分别为3.28 cm、2.12 cm、1.23 cm;核仁饱满,离核,甜仁,平均单仁鲜质量1.05 g、干质量0.90 g,出仁率37.02%;杏仁脂肪含量(w,后同)435.63 g·kg^(-1),蛋白质含量269.84 g·kg^(-1),钙含量1.26 g·kg^(-1),铁含量24.08 mg·kg^(-1)。丰产稳产,适应性强,综合性状优良。