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《分马》的疏忽
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作者 倪建中 《学语文》 2000年第1期17-18,共2页
关键词 中学 语文 教材研究 《分马》
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小说为什么以《分马》为题
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作者 张木军 《语文天地(初中版)》 2009年第8期62-62,共1页
《分马》选自周立波的长篇小说《暴风骤雨》第二部第二十四章,文中写的是元茂屯翻身农民分配胜利果实——分马、牛、骡、毛驴等情况,不完全是写分马。可是小说却以《分马》为题。这是为什么呢?原因有三:
关键词 《分马》 长篇小说 《暴风骤雨》 周立波
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Engineering The Neck Hinge Reshapes The Processive Movement of Kinesin-3
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作者 LI Dong REN Jin-Qi +2 位作者 SONG Yin-Long LIANG Xin FENG Wei 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2024年第10期2730-2740,共11页
Objective In kinesin-3,the neck coil correlates with the following segments to form an extended neck that contains a characteristic hinge diverse from a proline in KIF13B to a long flexible linker in KIF1A.The functio... Objective In kinesin-3,the neck coil correlates with the following segments to form an extended neck that contains a characteristic hinge diverse from a proline in KIF13B to a long flexible linker in KIF1A.The function of this neck hinge for controlling processive movement,however,remains unclear.Methods We made a series of modifications to the neck hinges of KIF13B and KIF1A and tested their movement using a single-molecule motility assay.Results In KIF13B,the insertion of flexible residues before or after the proline differentially impacts the processivity or velocity,while the removal of this proline increases the both.In KIF1A,the deletion of entire flexible neck hinge merely enhances the processivity.The engineering of these hinge-truncated necks of kinesin-3 into kinesin-1 similarly boosts the processive movement of kinesin-1.Conclusion The neck hinge in kinesin-3 controls its processive movement and proper modifications tune the motor motility,which provides a novel strategy to reshape the processive movement of kinesin motors. 展开更多
关键词 intracellular transport molecular motor kinesin-3 neck hinge processive movement
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The MAP/PH(PH/PH)/1 Discrete-time Queuing System with Repairable Server 被引量:4
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作者 禹海波 聂赞坎 杨建伟 《Chinese Quarterly Journal of Mathematics》 CSCD 2001年第2期59-63,共5页
In this paper, we discuss a discrete time repairable queuing system with Markovian arrival process, where lifetime of server, service time and repair time of server are all discrete phase type random variables. Using... In this paper, we discuss a discrete time repairable queuing system with Markovian arrival process, where lifetime of server, service time and repair time of server are all discrete phase type random variables. Using the theory of matrix geometric solution, we give the steady state distribution of queue length and waiting time. In addition, the stable availability of the system is also provided. 展开更多
关键词 discrete time queuing system reliability phase type distribution Markovian arrival process matrix geometric solution
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Available parking space occupancy change characteristics and short-term forecasting model 被引量:5
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作者 季彦婕 王炜 邓卫 《Journal of Southeast University(English Edition)》 EI CAS 2007年第4期604-608,共5页
Based on an available parking space occupancy (APSO) survey conducted in Nanjing, China, an APSO forecasting model is proposed. The APSO survey results indicate that the time series of APSO with different time-secti... Based on an available parking space occupancy (APSO) survey conducted in Nanjing, China, an APSO forecasting model is proposed. The APSO survey results indicate that the time series of APSO with different time-sections are periodical and self-similar, and the fluctuation of the APSO increases with the decrease in time-sections. Taking the short-time change behavior into account, an APSO forecasting model combined wavelet analysis and a weighted Markov chain is presented. In this model, an original APSO time series is first decomposed by wavelet analysis, and the results include low frequency signals representing the basic trends of APSO and several high frequency signals representing disturbances of the APSO. Then different Markov models are used to forecast the changes of low and high frequency signals, respectively. Finally, integrating the predicted results induces the final forecasted APSO. A case study verifies the applicability of the proposed model. The comparisons between measured and forecasted results show that the model is a competent model and its accuracy relies on real-time update of the APSO database. 展开更多
关键词 available parking space occupancy change characteristics short-term forecasting wavelet analysis weighted Markov chain
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Conditional autoregressive negative binomial model for analysis of crash count using Bayesian methods 被引量:1
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作者 徐建 孙璐 《Journal of Southeast University(English Edition)》 EI CAS 2014年第1期96-100,共5页
In order to improve crash occurrence models to account for the influence of various contributing factors, a conditional autoregressive negative binomial (CAR-NB) model is employed to allow for overdispersion (tackl... In order to improve crash occurrence models to account for the influence of various contributing factors, a conditional autoregressive negative binomial (CAR-NB) model is employed to allow for overdispersion (tackled by the NB component), unobserved heterogeneity and spatial autocorrelation (captured by the CAR process), using Markov chain Monte Carlo methods and the Gibbs sampler. Statistical tests suggest that the CAR-NB model is preferred over the CAR-Poisson, NB, zero-inflated Poisson, zero-inflated NB models, due to its lower prediction errors and more robust parameter inference. The study results show that crash frequency and fatalities are positively associated with the number of lanes, curve length, annual average daily traffic (AADT) per lane, as well as rainfall. Speed limit and the distances to the nearest hospitals have negative associations with segment-based crash counts but positive associations with fatality counts, presumably as a result of worsened collision impacts at higher speed and time loss during transporting crash victims. 展开更多
关键词 traffic safety crash count conditionalautoregressive negative binomial model Bayesian analysis Markov chain Monte Carlo
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A new species of Ctenothrips Franklin, 1907(Thysanoptera: Thripidae) from China 被引量:1
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作者 胡庆玲 冯纪年 《Entomotaxonomia》 CSCD 北大核心 2014年第4期261-266,共6页
Ctenothrips dissimilis sp. nov. is described and illustrated in detail. This new species can be readily distinguished by its 7-segmented antennae and inconspicuous reticulations on the abdominal segments. The male of ... Ctenothrips dissimilis sp. nov. is described and illustrated in detail. This new species can be readily distinguished by its 7-segmented antennae and inconspicuous reticulations on the abdominal segments. The male of this species is very similar to C. niger which has short rounded pore plates on sternites III and IV, but can be distinguished from the latter by the elongate elliptical pore plates. The number and the color pattern of antennal segments are also different. Type specimens are deposited in the Entomological Museum of Northwest AF University(NWAFU). 展开更多
关键词 Terebrantia Thripoidea Thripinae TAXONOMY
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The Frankliniella genus-group(Thysanoptera: Thripidae) in China, with a newly recorded genus
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作者 马吉德 杨淑兰 童晓立 《Entomotaxonomia》 CSCD 北大核心 2014年第2期97-104,共8页
Firmothrips Schliephake, the monobasie southeastern European genus, is reported from China for the first time. This is the fifth member of the Chinese Frankliniella genus-group. E firmus (Uzel), a newly-recorded spe... Firmothrips Schliephake, the monobasie southeastern European genus, is reported from China for the first time. This is the fifth member of the Chinese Frankliniella genus-group. E firmus (Uzel), a newly-recorded species, is described and illustrated. A key to five genera of the Chinese Frankliniella genus-group and comments on each genus are provided. 展开更多
关键词 Terebrantia THRIPS taxonomy key
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Study on Spatial Distribution Pattern of Thrip (Odentot hrips lati) on Alfalfa (Medicago sativa) 被引量:1
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作者 赵丽丽 王普昶 +1 位作者 刘玉良 陈彦希 《Agricultural Science & Technology》 CAS 2011年第7期990-993,共4页
[Objective] The aim of this study was to reveal and analyze the spatial distribution pattern of thrip(Odentot hrips lati) on alfalfa(Medicago sativa).[Method] Within alfalfa plantation areas,experimental plots wit... [Objective] The aim of this study was to reveal and analyze the spatial distribution pattern of thrip(Odentot hrips lati) on alfalfa(Medicago sativa).[Method] Within alfalfa plantation areas,experimental plots with the sizes of 10×10,10×20,10×30,20×30,20×40,20×80,30×30,30×40,30×50,40×40,40×50,40×80 and 50×50 m2 respectively were set up in the randomly selected sampling sites of 1 m ×2 m in size.During bud-emerging period and florescence period of alfalfa in the experimental plots,the number of thrips was counted and their distribution pattern was measured using XU Ru-mei's method.[Result] During bud-emerging period of alfalfa,the spatial distribution of thrips assumed an elliptic shape sized of 40×30-40×40 cm2 at horizontal level and that presented an ascending-falling trend of tress density down from the top at vertical level.During the florescence period of alfalfa,it showed a homogeneous distribution or randomly distributed pattern at horizontal level and a falling trend of tress density from the top to the apex to the root at vertical level.[Conclusion] Our results provide theoretical basis for field selection of insect-resistant alfalfa varieties. 展开更多
关键词 THRIPS Different degree Distribution pattern ALFALFA
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The spore-feeding genus Nesothrips(Thysanoptera: Idolothripinae) from China, with one new record
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作者 张文婷 冯纪年 +1 位作者 曹少杰 郭付振 《Entomotaxonomia》 CSCD 2017年第4期314-319,共6页
The species from China in the spore-feeding genus Nesothrips Kirkaldy are reviewed and N. propinquus is recorded for the first time from China. An identification key is provided for the four Nesothrips species current... The species from China in the spore-feeding genus Nesothrips Kirkaldy are reviewed and N. propinquus is recorded for the first time from China. An identification key is provided for the four Nesothrips species currently recorded from China. 展开更多
关键词 fungus-feeding thrips PHLAEOTHRIPIDAE taxonomy
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The genus Bolothrips(Thysanopfera: Idolothripinae)—a new record to China, with two new record species
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作者 郭付振 曹少杰 冯纪年 《Entomotaxonomia》 CSCD 北大核心 2014年第2期90-96,共7页
Bolothrips icarus (Uzel) and B. bicolor (Heeger) are newly recorded from China. This represents the first record of the genus Bolothrips (Uzel) in China. Examined specimens are deposited in the Entomological Mus... Bolothrips icarus (Uzel) and B. bicolor (Heeger) are newly recorded from China. This represents the first record of the genus Bolothrips (Uzel) in China. Examined specimens are deposited in the Entomological Museum, Northwest A&F University, Yangling, Shaanxi, China (NWAFU). 展开更多
关键词 Tubulifera Phlaeothripoidea TAXONOMY
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Development and Age Structure of Ramets of Kalimeris integrifolia Populations in the Songnen Plains, Northeast China 被引量:6
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作者 杨允菲 王升忠 李建东 《Acta Botanica Sinica》 CSCD 2003年第2期158-163,共6页
Kalimeris integrifolia Turcz. is a root sucker form perennial herb of Compositae. In die late period of growing season, fresh fleshy radicels grow up above the soil surface to develop root-borne buds, which in turn gr... Kalimeris integrifolia Turcz. is a root sucker form perennial herb of Compositae. In die late period of growing season, fresh fleshy radicels grow up above the soil surface to develop root-borne buds, which in turn grow into ramets and taproot. On the basis of observation on numerous samples, methods to classify the age of ramets and buds for the root sucker herbaceous plant population and to estimate the ages of taproots were established according to their morphology. The age of ramets was classified based on the regeneration times of taproot buds. Ramets developed from new root sucker buds were classified as 1 a. After 1 a ramets died, the ramets reproduced from the taproots were 2 a, and so on. New buds from a root sucker were 0 a buds, other age classes of buds were consistent with that of ramets, i.e. buds produced from taproots of I a ramets were 1 a buds, and so on. In the hay clipping meadows of the Songnen Plains, for K. integrifolia population, there are three age classes of ramets, representing a steady age structure. The maximal age of taproots of ramets is 4 a. Among all age classes, the population productivity of 2 a ramets was the highest, and that of I a ramets was the lowest. The ramet productivity increased with ramet age. During the early period of growing season, the productivity of 3 a ramets was the highest, but after the middle of growing season, I a ramets showed the greatest relative growth rate. The population size and age structure in the next year could be accurately forecasted by the number of fresh roots with budlet and present population in late autumn. The potential population in the bud banks was more than two times of the present population, which may provide sufficient substitution in the future. 展开更多
关键词 Kalimeris integrifolia CLONE RAMET TAPROOT bank of bud age structure productivity
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A new species of Chilothrips Hood, 1916(Thysanoptera:Thripidae) from China
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作者 胡庆玲 冯纪年 《Entomotaxonomia》 CSCD 2015年第4期249-252,共4页
Chilothrips hangzhouensis sp. nov. is described and illustrated in detail. This new species is similar to C. strobilus but can be distinguished from the latter by the two pairs of ocellar setae and the absent of the p... Chilothrips hangzhouensis sp. nov. is described and illustrated in detail. This new species is similar to C. strobilus but can be distinguished from the latter by the two pairs of ocellar setae and the absent of the pore plates on abdominal sternites Ⅲ –Ⅳ(C. strobilus has three pairs of ocellar setae and abdominal sternites Ⅲ –Ⅳ have pore plates). 展开更多
关键词 Thripinae Chilothrips hangzhouensis taxonomy Pinus pollen
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SRAP Marker Analysis of Genomic Mutation Induced by ^(60)Coγ-Ray Irradiation in Potato (Solanum tuberosum) 被引量:1
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作者 黄先群 刘子瑜 +5 位作者 黄团 唐章林 李丽 丁小令 林平 陈梦玉 《Agricultural Science & Technology》 CAS 2013年第8期1092-1098,共7页
[Objective] This study was to explore the mutagenic effect of 60Co γ-ray on Solanum tuberosum chromosomes.[Method] The 60Co γ-ray at different irradiation doses was applied to treat the minitubers of potato variety ... [Objective] This study was to explore the mutagenic effect of 60Co γ-ray on Solanum tuberosum chromosomes.[Method] The 60Co γ-ray at different irradiation doses was applied to treat the minitubers of potato variety 'Favorita',and the genomic mutations in VM1 and VM2 gene rations in treatments with different doses were analyzed by SRAP markers.[Resalt] Thirty pairs of SRAP primers out of 88 pairs exhibited polymorphism with a rate of 34.1% in the bulked selection of VM1 generation.A total of 225 bands were obtained,of which 64 were polymorphic with a rate of 28.4%.The polymorphism was reflected in the forms of deleted bands and added bands.Based on the result of the bulked selection of VM1 generation,25 primers with polymorphism were selected to scan VM2 generation.Five primers performed poorly,and nine of the rest 20 pairs revealed polymorphism and obtained nine polymorphic bands,of which only four bands were detected in VM1 generation and the other five ones were newly deleted bands.Only 9.8% of the bands detected in VM1 generation were obtained in VM2 generation.Eventually,nine stable and dear polymorphic bands were recovered and cloned,and DNA sequences of six bands of them were acquired by sequencing.According to the comparative analysis,five fragments sequences were similar to potato chromosome with a similarity rate of 77%-89%,three of them located at the resistance gene cluster; another one fragment had a similarity of 93% with some regions of the No.5 chromosome in tomato.[Conclusion] 60Co γ-ray irradiation can cause mutation of genomic DNA in potato;there is no significant correlation between the number of polymorphic bands and the irradiation dose; potymorphic bands are characterized by a larger number of deleted bands than that of the added ones. 展开更多
关键词 POTATO ^60Co γ-ray irradiation SRAP markers MUTATION
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The subfamily Panchaetothripinae(Thysanoptera:Thripidae) in Iran,with the first report of genus Selenothrips Karny 被引量:1
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作者 马吉德 陈学新 《Entomotaxonomia》 CSCD 北大核心 2012年第1期22-29,共8页
The subfamily Panchaetothripinae Bagnall is one of the 4 subfamilies in the family Thripidae. This subfamily includes 6 species in 5 genera in Iran. In this paper, the monobasic genus Selenothrips Kamy is recorded in ... The subfamily Panchaetothripinae Bagnall is one of the 4 subfamilies in the family Thripidae. This subfamily includes 6 species in 5 genera in Iran. In this paper, the monobasic genus Selenothrips Kamy is recorded in Iran for the first time. A key is provided for identifying these 6 genera with comments on each genus and its species. The geographical distribution is provided for 7 species occurring in Iran. 展开更多
关键词 THRIPIDAE Panchaetothripinae Selenothrips geographical distribution Iran
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Detecting abnormalities for empty nest elder in smart monitoring system
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作者 杨蕾 杨路明 +1 位作者 满君丰 刘广滨 《Journal of Southeast University(English Edition)》 EI CAS 2008年第3期347-350,共4页
In order to implement the real-time detection of abnormality of elder and devices in an empty nest home,multi-modal joint sensors are used to collect discrete action sequences of behavior,and the improved hierarchical... In order to implement the real-time detection of abnormality of elder and devices in an empty nest home,multi-modal joint sensors are used to collect discrete action sequences of behavior,and the improved hierarchical hidden Markov model is adopted to Abstract these discrete action sequences captured by multi-modal joint sensors into an occupant’s high-level behavior—event,then structure representation models of occupant normality are modeled from large amounts of spatio-temporal data. These models are used as classifiers of normality to detect an occupant’s abnormal behavior.In order to express context information needed by reasoning and detection,multi-media ontology (MMO) is designed to annotate and reason about the media information in the smart monitoring system.A pessimistic emotion model (PEM) is improved to analyze multi-interleaving events of multi-active devices in the home.Experiments demonstrate that the PEM can enhance the accuracy and reliability for detecting active devices when these devices are in blind regions or are occlusive. The above approach has good performance in detecting abnormalities involving occupants and devices in a real-time way. 展开更多
关键词 multi-media ontology semantic annotation abnormality detection hierarchical hidden Markov model pessimistic emotion model
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On approximating multifractal traffic burstiness with Markov modulated Poisson processes 被引量:1
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作者 纪其进 《Journal of Southeast University(English Edition)》 EI CAS 2004年第4期436-441,共6页
We investigate the approximating capability of Markov modulated Poisson processes (MMPP) for modeling multifractal Internet traffic. The choice of MMPP is motivated by its ability to capture the variability and correl... We investigate the approximating capability of Markov modulated Poisson processes (MMPP) for modeling multifractal Internet traffic. The choice of MMPP is motivated by its ability to capture the variability and correlation in moderate time scales while being analytically tractable. Important statistics of traffic burstiness are described and a customized moment-based fitting procedure of MMPP to traffic traces is presented. Our methodology of doing this is to examine whether the MMPP can be used to predict the performance of a queue to which MMPP sample paths and measured traffic traces are fed for comparison respectively, in addition to the goodness-of-fit test of MMPP. Numerical results and simulations show that the fitted MMPP can approximate multifractal traffic quite well, i.e. accurately predict the queueing performance. 展开更多
关键词 multifractal traffic Markov modulated Poisson processes queueing delay packet loss rate
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A newly recorded genus Smilothrips Bhatti(Thysanoptera:Thripidae) in China
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作者 马吉德 杨淑兰 童晓立 《Entomotaxonomia》 CSCD 北大核心 2013年第3期179-184,共6页
A newly recorded species Smilothrips productus Bhatti, 1976 (Thripidae: Thripinae), collected on sedges from Sichuan is described and illustrated using SEM. This is also the first report of a member of the genus Sm... A newly recorded species Smilothrips productus Bhatti, 1976 (Thripidae: Thripinae), collected on sedges from Sichuan is described and illustrated using SEM. This is also the first report of a member of the genus Smilothrips in China. Larvae and two different wing morphs of the species (micropterous and brachypterous) are also described for the first time herein. 展开更多
关键词 Yubulifera Thripoidea wing morphs taxonomy
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多一个视角深一层理解——老孙头形象新解
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作者 张德勤 《中学语文(教学大参考)(上旬)》 2007年第9期36-37,共2页
教过几年初中语文的教师,想必对《分马》这篇课文并不陌生。该课文选自于周立波的长篇小说《暴风骤雨》第二部第二十四章。其中老孙头这个人物个性鲜明。尤其让人喜爱,他风趣幽默,聪明睿智,是作品中绝无仅有的一个喜剧人物。
关键词 形象 《暴风骤雨》 人物个性 初中语文 《分马》 长篇小说 周立波 文选
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Modular solution of dynamic multiple-phased systems 被引量:3
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作者 莫毓昌 杨全胜 《Journal of Southeast University(English Edition)》 EI CAS 2009年第3期316-319,共4页
A new modular solution to the state explosion problem caused by the Markov-based modular solution of dynamic multiple-phased systems is proposed. First, the solution makes full use of the static parts of dynamic multi... A new modular solution to the state explosion problem caused by the Markov-based modular solution of dynamic multiple-phased systems is proposed. First, the solution makes full use of the static parts of dynamic multiple-phased systems and constructs cross-phase dynamic modules by combining the dynamic modules of phase fault trees. Secondly, the system binary decision diagram (BDD) from a modularized multiple- phased system (MPS)is generated by using variable ordering and BDD operations. The computational formulations of the BDD node event probability are derived for various node links and the system reliability results are figured out. Finally, a hypothetical multiple-phased system is given to demonstrate the advantages of the dynamic modular solution when the Markov state space and the size of the system BDD are reduced. 展开更多
关键词 binary decision diagram (BDD) dynamic fault tree Markov chain modular solution
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