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M?bius Regular Maps of Order pq
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作者 Fu Rong WANG Shao Fei DU 《数学学报:英文版》 SCIE CSCD 2019年第5期690-702,共13页
M?bius regular maps are surface embeddings of graphs with doubled edges such that (i) the automorphism group of the embedding acts regularly on flags and (ii) each doubled edge is a center of a Mobius band on the surf... M?bius regular maps are surface embeddings of graphs with doubled edges such that (i) the automorphism group of the embedding acts regularly on flags and (ii) each doubled edge is a center of a Mobius band on the surface. In this paper, we classify M?bius regular maps of order pq for any two primes p and q, where p≠q. 展开更多
关键词 M?bius REGULAR MAPS REGULAR EMBEDDING PERMUTATION group
Antibody-Cytokeratin Marker 34βE12 in Prostate Cancer Detection 预览
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作者 Luiz Carlos de Araújo Souza Vinícius Carvalhêdo Cunha +2 位作者 Hugo Oliveira de Figueiredo Cavalcanti Joao Ricardo Alves Sandra Lúcia Branco Mendes Coutinho 《药剂与药理学:英文版》 2019年第4期187-197,共11页
Introduction:The histological diagnosis of prostate cancer is commonly based on morphological patterns.The presence of malignant tissue mixed with benign tissue,or the presence of carcinoma that mimics benignity may g... Introduction:The histological diagnosis of prostate cancer is commonly based on morphological patterns.The presence of malignant tissue mixed with benign tissue,or the presence of carcinoma that mimics benignity may generate difficulty in the diagnostic elucidation.Therefore,the application of immunohistochemistry contributes its diagnostic value.Objectives:To evaluate the 34βE12 marker in the detection of adenocarcinoma(ADn),atypical small acinar proliferation(ASAp),regular prostatic tissue(RPT)and regular prostatic tissue alternated by atrophy spotlights(RPTa)in transrectal biopsy guided by ultrasonography of patients with suspected prostate cancer.Method:Analysis of 34 patients who underwent ultrasound-guided transrectal biopsy with subsequent analysis by H&E staining and 34βE12 labeling for elucidation of neoplasms or diseased tissues with doubtful diagnosis.Results:The marker 34βE12 showed negativity in 100%of the neoplasms ADn,positivity in 100%of the benign prostatic tissues(RPT and RPTa);the patients with ASAp presented positivity(20%)and negativity(80%).The chi-square test(χ2)showed that there is an association(χ2=29.55 and p<0.0001)between the groups,that is,the 34βE12 marker has a significant value(p<0.0001)in the elucidation of patients with prostatic neoplasia and benign prostatic tissues.Discussion and Conclusion:With the early screening of prostate cancer in the modern era,pathologists have become increasingly challenged to diagnose small outbreaks of cancer when only a few atypical glands are present in transrectal biopsy-guided ultrasonography.The 34βE12 marker becomes an important tool in elucidating diagnoses such as ADn and ASAp. 展开更多
关键词 Antibody-cytokeratin MARKER 34ΒE12 adenocarcinoma(ADn) atypical small acinar proliferation(ASAp) REGULAR PROSTATIC tissue(RPT) REGULAR PROSTATIC tissue alternated by atrophy spotlights(RPTa)
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替换环什么时候是冯诺依曼正则环(英文) 预览
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作者 黄朝凌 《数学季刊:英文版》 2019年第1期21-28,共8页
We study when exchange rings are von Neumann regular. An exchange ring R with primitive factors Artinian is von Neumann regular, if the Jacobson radical of any indecomposable homomorphic image of R is T-nilpotent, and... We study when exchange rings are von Neumann regular. An exchange ring R with primitive factors Artinian is von Neumann regular, if the Jacobson radical of any indecomposable homomorphic image of R is T-nilpotent, and if any indecomposable homomorphic image of R is semiprime. Every indecomposable semiprimitive factor ring of R is regular, if R is an exchange ring such that every left primitive factor ring of R is a ring of index at most n and if R has nil-property. 展开更多
关键词 EXCHANGE RING von NEUMANN REGULAR RING STRONG π-regular RING
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基于Star-CCM+的摆式波浪能装置水动力性能研究 预览
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作者 Zheng Yuan Liang Zhang +2 位作者 Binzhen Zhou Peng Jin Xiongbo Zheng 《船舶与海洋工程学报:英文版》 CSCD 2019年第2期153-159,共7页
A two-dimensional numerical Computational Fluid Dynamics(CFD)model is established on the basis of viscous CFD theory to investigate the motion response and power absorption performance of a bottom-hinged flap-type wav... A two-dimensional numerical Computational Fluid Dynamics(CFD)model is established on the basis of viscous CFD theory to investigate the motion response and power absorption performance of a bottom-hinged flap-type wave energy converter(WEC)under regular wave conditions.The convergence study of mesh size and time step is performed to ensure that wave height and motion response are sufficiently accurate.Wave height results reveal that the attenuation of wave height along the wave tank is less than 5%only if the suitable mesh size and time step are selected.The model proposed in this work is verified against published experimental and numerical models.The effects of mechanical damping,wave height,wave frequency,and water depth on the motion response,power generation,and energy conversion efficiency of the flap-type WEC are investigated.The selection of the appropriate mechanical damping of the WEC is crucial for the optimal extraction of wave power.The optimal mechanical damping can be readily predicted by using potential flow theory.It can then be verified by applying CFD numerical results.In addition,the motion response and the energy conversion efficiency of the WEC decrease as the incident wave height increases because the strengthened nonlinear effect of waves intensifies energy loss.Moreover,the energy conversion efficiency of theWEC decreases with increasing water depth and remains constant as the water depth reaches a critical value.Therefore,the selection of the optimal parameters during the design process is necessary to ensure that the WEC exhibits the maximum energy conversion efficiency. 展开更多
关键词 WAVE ENERGY CONVERTER Oyster.Energy conversion efficiency OptimumPTO DAMPING Nonlinear REGULAR WAVE
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Graded Lie Algebras of Dimension Five and Some Artin-Schelter Regular Algebras
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作者 Yuan Shen 《代数集刊:英文版》 SCIE CSCD 2019年第2期243-258,共16页
In this paper, we show that there are only seven graded Lie algebras of dimension 5 generated in degree 1 up to isomorphism. By parameterizing the relations of the universal enveloping algebras of three of those grade... In this paper, we show that there are only seven graded Lie algebras of dimension 5 generated in degree 1 up to isomorphism. By parameterizing the relations of the universal enveloping algebras of three of those graded Lie algebras, we construct some new Artin-Schelter regular algebras of global dimension 5. We prove that those algebras are all strongly noetherian, Auslander regular and Cohen-Macaulay, and describe their Nakayama automorphisms. 展开更多
关键词 Artin-Schelter regular ALGEBRAS GRADED LIE ALGEBRAS Nakayama AUTOMORPHISMS
Characteristic Decomposition: From Regular Sets to Normal Sets
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作者 MOU Chenqi WANG Dongming 《系统科学与复杂性学报:英文版》 SCIE EI CSCD 2019年第1期37-46,共10页
In this paper it is shown how to transform a regular triangular set into a normal triangular set by computing the W-characteristic set of their saturated ideal and an algorithm is proposed for decomposing any polynomi... In this paper it is shown how to transform a regular triangular set into a normal triangular set by computing the W-characteristic set of their saturated ideal and an algorithm is proposed for decomposing any polynomial set into finitely many strong characteristic pairs,each of which is formed with the reduced lexicographic GrSbner basis and the normal W-characteristic set of a characterizable ideal. 展开更多
关键词 CHARACTERISTIC DECOMPOSITION CHARACTERISTIC PAIR NORMAL SET REGULAR SET W-characteristic SET
Principally-Injective Leavitt Path Algebras over Arbitrary Graphs 预览
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作者 Soumitra Das Ardeline M.Buhphang 《数学和系统科学:英文版》 2019年第3期86-89,共4页
ring R is called right principally-injective if every R-homomorphism f:aR→R,a∈R,extends to R,or equivalently,if every system of equations xa=b(a,b∈R)is solvable in R.In this paper we show that for any arbitrary gra... ring R is called right principally-injective if every R-homomorphism f:aR→R,a∈R,extends to R,or equivalently,if every system of equations xa=b(a,b∈R)is solvable in R.In this paper we show that for any arbitrary graph E and for a field K,principally-injective conditions for the Leavitt path algebra LK(E)are equivalent to that graph E being acyclic.We also show that the principally-injective Leavitt path algebras are precisely the von Neumann regular Leavitt path algebras. 展开更多
关键词 Leavitt path ALGEBRAS von NEUMANN regular RINGS principally-injective RINGS ARBITRARY graph
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Robust and Resilient
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作者 Wang Jun 《北京周报:英文版》 2019年第22期38-39,共2页
Releasing the regular monthly figures for the econom's performance in April,the National Bureau of Statistics(NBS)said the momentum of progress continues.“The economy performed within a reasonable range and susta... Releasing the regular monthly figures for the econom's performance in April,the National Bureau of Statistics(NBS)said the momentum of progress continues.“The economy performed within a reasonable range and sustained the momentum of progress in overall stability...with growing positive factors in April,”the NBS said in a press release on May 15.According to the data,in April,the index of service product year on increased by 7.4 percent year on year,the second highest monthly growth since September 2018. 展开更多
关键词 RELEASING the REGULAR econom's PERFORMANCE MOMENTUM of PROGRESS
Experimental investigating on the reflected waves from the caisson-type vertical porous seawalls 预览
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作者 Mehdi Esmaeili Maryam Rahbani Ali Karami Khaniki 《海洋学报:英文版》 SCIE CAS CSCD 2019年第6期117-123,共7页
The hydrodynamic efficiencies of caisson-type vertical porous seawalls used for protecting coastal areas were calculated in this study. Physical models were developed to compare the wave reflection from vertical plane... The hydrodynamic efficiencies of caisson-type vertical porous seawalls used for protecting coastal areas were calculated in this study. Physical models were developed to compare the wave reflection from vertical plane, semi-porous, and porous seawalls caused by both regular and random waves. Tests were carried out for a wide range of wave heights, wave periods, and different water depths (d=0.165, 0.270 and 0.375 m). The performance regarding the reflected waves from porous and semi-porous seawalls showed improvement when compared with those from the plane seawall. The reflection coefficients of the porous and semi-porous seawalls were calculated as 0.6 and 0.75, respectively, while the coefficient for the fully reflecting plane vertical wall was significantly higher (0.9). It was also observed that the reflection coefficient decreases with increase in wave steepness and relative water depth. In addition, the reduction in the reflection coefficient of porous and semi-porous seawalls, as compared to that of a plane seawall, was observed for both regular and random waves. New equations were also proposed to calculate the reflection coefficient of different types of seawalls with the aid of laboratory experiments. By verifying the developed equations using some other experimental data, it was validated that the equations could be used for practical situations. The results of the present study can be applied to optimize the design of vertical seawalls and for coastal protecting schemes. 展开更多
关键词 reflection coefficient POROUS SEAWALL regular WAVE random WAVE FLUME
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A Survey of Multi-robot Regular and Adversarial Patrolling 预览
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作者 Li Huang MengChu Zhou +1 位作者 Kuangrong Hao Edwin Hou 《自动化学报:英文版》 CSCD 2019年第4期894-903,共10页
Multi-robot systems can be applied to patrol a concerned environment for security purposes.According to different goals,this work reviews the existing researches in a multi-robot patrolling field from the perspectives... Multi-robot systems can be applied to patrol a concerned environment for security purposes.According to different goals,this work reviews the existing researches in a multi-robot patrolling field from the perspectives of regular and adversarial patrolling.Regular patrolling requires robots to visit important locations as frequently as possible and a series of deterministic strategies are proposed,while adversarial one focuses on unpredictable robots’moving patterns to maximize adversary detection probability.Under each category,a systematic survey is done including problem statements and modeling,patrolling objectives and evaluation criteria,and representative patrolling strategies and approaches.Existing problems and open questions are presented accordingly. 展开更多
关键词 MULTI-ROBOT systems REGULAR patrolling adversarial patrolling COORDINATION METHODS SURVEILLANCE
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当前亟需推进应急风险管理常态化——兼论“后扶贫时代”的贫困风险应急管理机制建设 预览
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作者 王增文 《人民论坛·学术前沿》 CSSCI 北大核心 2019年第5期44-49,65共7页
应急管理部的设立标志着我国开始对应急风险管理机制进行系统性改革。完善的应急风险管理机制应当拥有高效的组织架构、全面的应急体系和多元的主体参与。传统的应急风险管理机制因缺乏社会力量引导、疏于事前防范且责任部门较为混乱,... 应急管理部的设立标志着我国开始对应急风险管理机制进行系统性改革。完善的应急风险管理机制应当拥有高效的组织架构、全面的应急体系和多元的主体参与。传统的应急风险管理机制因缺乏社会力量引导、疏于事前防范且责任部门较为混乱,缺乏对风险的控制能力。当前,应着力推进事前应急机制和常态化应急体系的构建。贫困风险的防治与目前仅针对公共事件和突发灾害的应急管理机制理念相吻合,其具体的操作流程也具有可类比性。在后扶贫时代,贫困发生主要伴随着致贫因子发生,应当将应对贫困风险也纳入到应急风险管理机制的建设中来,这样可以拓宽应急风险管理机制的外延,丰富应急风险管理机制的职能。 展开更多
关键词 应急管理部 应急风险管理机制 常态化 贫困风险
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Hypersemilattice Strongly Regular Relationson Ordered Semihypergroups 预览
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作者 Tang Jian Xie Xiang-Yun Du Xian-kun 《数学研究通讯:英文版》 CSCD 2019年第2期115-128,共14页
In this paper, we ?rst consider the regular and strongly regular relations on ordered semihypergroups in detail. In particular, we introduce the concepts of the hypersemilattice strongly regular relations and complete... In this paper, we ?rst consider the regular and strongly regular relations on ordered semihypergroups in detail. In particular, we introduce the concepts of the hypersemilattice strongly regular relations and complete hypersemilattice strongly regular relations on ordered semihypergroups, and investigate their related properties.Furthermore, the properties of hyper?lters of an ordered semihypergroup are studied,and several related applications are given. Especially, we prove that the equivalence relation N on an ordered semihypergroup S is the least complete hypersemilattice strongly regular relation on S. 展开更多
关键词 ORDERED semihypergroup STRONGLY REGULAR RELATION hyperfilter
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Earth Pressure Distribution and Sand Deformation Around Modified Suction Caissons (MSCs) Under Monotonic Lateral Loading 预览
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作者 LI Da-yong LI Shan-shan +1 位作者 ZHANG Yu-kun CHEN Fu-quan 《中国海洋工程:英文版》 SCIE EI CSCD 2019年第2期198-206,共9页
The modified suction caisson (MSC) is a novel type of foundation for ocean engineering, consisting of a short external closed-top cylinder-shaped structure surrounding the upper part of the regular suction caisson (RS... The modified suction caisson (MSC) is a novel type of foundation for ocean engineering, consisting of a short external closed-top cylinder-shaped structure surrounding the upper part of the regular suction caisson (RSC). The MSC can provide larger lateral bearing capacity and limit the deflection compared with the RSC. Therefore, the MSC can be much more appropriate to use as an offshore wind turbine foundation. Model tests on the MSC in saturated sand subjected to monotonic lateral loading were carried out to investigate the effects of external structure sizes on the sand surface deformation and the earth pressure distribution along the embedded depth. Test results show that the deformation range of the sand surface increases with the increasing width and length of the external structure. The magnitude of sand upheaval around the MSC is smaller than that of the RSC and the sand upheaval value around the MSC in the loading direction decreases with the increasing external structure dimensions. The net earth pressure in the loading direction acting on the internal compartment of the MSC is smaller than that of the RSC at the same embedded depth. The maximum net earth pressure acting on the external structure outer wall in the loading direction is larger than that of the internal compartment, indicating that a considerable amount of the lateral load and moment is resisted by the external skirt structure. 展开更多
关键词 MSC (modified SUCTION caisson) RSC (regular SUCTION caisson) model tests MONOTONIC lateral loading DEFORMATION of SAND surface earth pressure distribution
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鹤壁市冬小麦干热风发生规律及防御措施探究 预览
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作者 陈道培 《农业灾害研究》 2019年第2期60-62,81共4页
利用鹤壁淇县1967—2016年5月21日-6月5日的气象资料,根据小麦干热风灾害等级(QX/T82-2007)标准调查在该时段发生的干热风日数、干热风天气过程以及干热风年型。结果表明,鹤壁小麦干热风多以轻干热风为主;小麦干热风日数随着年代变化具... 利用鹤壁淇县1967—2016年5月21日-6月5日的气象资料,根据小麦干热风灾害等级(QX/T82-2007)标准调查在该时段发生的干热风日数、干热风天气过程以及干热风年型。结果表明,鹤壁小麦干热风多以轻干热风为主;小麦干热风日数随着年代变化具有阶段性,20世纪60年代末到70年代,干热风日数偏多,80年代偏少,从2000年后又有增多的趋势。防御干热风主要可通过防和抗2个途径来减轻或消除干热风对小麦的危害,其中更主要的措施是防。 展开更多
关键词 干热风 规律 防御
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Meshless Method for Analysis of Permeable Breakwaters in the Proximity of A Vertical Wall 预览
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作者 Nadji CHIOUKH Karim OUAZZANE +2 位作者 Yalcln YUSEL Benameur HAMOUDI Esin EVIK 《中国海洋工程:英文版》 SCIE EI CSCD 2019年第2期148-159,共12页
In the present work, the improved version of the meshless singular boundary method (ISBM) is developed for analyzing the performance of bottom standing submerged permeable breakwaters in regular normally incident wave... In the present work, the improved version of the meshless singular boundary method (ISBM) is developed for analyzing the performance of bottom standing submerged permeable breakwaters in regular normally incident waves and in the proximity of a vertical wall. Both single and dual prismatic breakwaters of rectangular and trapezoidal forms are examined. The physical problem is cast in terms of the Laplace equation governing an irrotational flow and incompressible fluid motion with appropriate mixed type boundary conditions, and solved numerically using the ISBM. To model the permeability of the breakwaters fully absorbing boundary conditions are assumed. Numerical results are presented in terms of hydrodynamic quantities of the reflection coefficients. These are firstly validated against the results of a multi-domain boundary element method (BEM) developed independently for a previous study. The agreement between the results of the two methods is excellent. The coefficients of reflection are then computed and discussed for a variety of structural conditions including the breakwaters height, width, spacing, and absorbing permeability. Effects of the proximity of the vertical plane wall are also investigated. The breakwater’s width is found to have only marginal effects compared with its height. Permeability tends to decrease the minimum reflections. These coefficients show periodic variations with the spacing relative to the wavelength. Trapezoidal breakwaters are found to be more cost-effective than the rectangular breakwaters. Dual breakwater systems are confirmed to perform much better than single structures. 展开更多
关键词 MESHLESS improved SINGULAR boundary method REGULAR normal waves rectangular and trapezoidal BREAKWATERS permeability vertical wall reflection
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Experimental Study of Wave Attenuation in Trapezoidal Floating Breakwaters 预览
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作者 A.H.Nikpour M.N.Moghim M.A.Badri 《中国海洋工程:英文版》 SCIE EI CSCD 2019年第1期103-113,共11页
A comprehensive experimental study was carried out on the regular wave attenuation with a trapezoidal pontoontype floating breakwater(FB)in deep water.The functionalities of two simple FB geometries consist of a recta... A comprehensive experimental study was carried out on the regular wave attenuation with a trapezoidal pontoontype floating breakwater(FB)in deep water.The functionalities of two simple FB geometries consist of a rectangle and a trapezoid with the slope of 60°were investigated under the wave attack.A two-dimensional wave flume was used in the experiment;the incident,transmitted waves,mooring line forces and motion responses of the floating breakwaters were measured.Also the influence of the sea state conditions(incident wave height and wave period)and structural parameters(draught of the structure)were investigated using the trapezoidal FB.Our experimental results indicated that the trapezoidal FB significantly reduced the wave transmission and mooring line force when compared with rectangular FBs.A new formula was developed in order to predict the value of the transmission coefficient in trapezoidal FBs with the slope of 60°.Experimental data showed to be consistent with the results of the formula. 展开更多
关键词 REGULAR waves FLOATING breakwater(FB) wave FLUME TRAPEZOID MOORING line force transmission
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On 3-Regular Tripartitions
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作者 Chandrashekar ADIGA Ranganatha DASAPPA 《数学学报:英文版》 SCIE CSCD 2019年第3期355-368,共14页
In this article,we investigate the arithmetic behavior of the function D3(n)which counts the number of 3-regular tripartitions of n.For example,we show that for α≥1 and n≥0,D3(3^2αn+11.3^2α-1/4)≡0(mod 3^2α+3 ) ... In this article,we investigate the arithmetic behavior of the function D3(n)which counts the number of 3-regular tripartitions of n.For example,we show that for α≥1 and n≥0,D3(3^2αn+11.3^2α-1/4)≡0(mod 3^2α+3 ) and D3(3^2αn+7.3^2α-1-1/4)≡0(mod 3^2α+2). 展开更多
关键词 REGULAR PARTITIONS CONGRUENCES THETA FUNCTIONS
High Speed Regular Expression Matching Engine with Fast Pre-Processing 预览
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作者 Zhe Fu Jun Li 《中国通信:英文版》 SCIE CSCD 2019年第2期177-188,共12页
Regular expression matching is playing an important role in deep inspection.The rapid development of SDN and NFV makes the network more dynamic,bringing serious challenges to traditional deep inspection matching engin... Regular expression matching is playing an important role in deep inspection.The rapid development of SDN and NFV makes the network more dynamic,bringing serious challenges to traditional deep inspection matching engines.However,state-of-theart matching methods often require a significant amount of pre-processing time and hence are not suitable for this fast updating scenario.In this paper,a novel matching engine called BFA is proposed to achieve high-speed regular expression matching with fast pre-processing.Experiments demonstrate that BFA obtains 5 to 20 times more update abilities compared to existing regular expression matching methods,and scales well on multi-core platforms. 展开更多
关键词 DEEP inspection finite AUTOMATON REGULAR expression MATCHING PRE-PROCESSING
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城市住宅建筑立面色彩设计的可拓数据挖掘研究
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作者 高智慧 邹广天 《数学的实践与认识》 北大核心 2019年第9期11-19,共9页
伴随着大数据时代的社会发展,对城市建筑形象进行了更为深入和细致的描述,而建筑立面色彩设计却往往依靠设计师感性认知和设计经验来把握,并且色彩本身具有的模糊性、复杂性更容易使人产生困惑.在新数据环境下,为了用数据实证说明住宅... 伴随着大数据时代的社会发展,对城市建筑形象进行了更为深入和细致的描述,而建筑立面色彩设计却往往依靠设计师感性认知和设计经验来把握,并且色彩本身具有的模糊性、复杂性更容易使人产生困惑.在新数据环境下,为了用数据实证说明住宅建筑立面色彩设计的规律性问题.本文提出应用可拓数据挖掘方法的城市住宅建筑立面色彩设计研究.首先文章阐述了可拓数据挖掘方法的概念、优势及步骤;其次,针对城市住宅建筑立面色彩设计实际案例,通过现场拍照获取原始图片信息、Adobe Photoshop计算机软件提取色彩量值(色相、亮度、饱和度),对立面色彩数据展开可拓数据挖掘研究,获取规律模型;最后,根据总结出的色彩设计搭配规律,提出城市住宅建筑色彩设计选色指导.研究结果表明,该方法能够挖掘出地区的城市住宅建筑色彩搭配的倾向性问题,进而辅助色彩设计.一方面,以数据实证提高色彩设计的科学性,并激发设计师的创造力,另一方面为计算机智能化辅助可拓住宅建筑设计提供方法支持. 展开更多
关键词 住宅建筑 立面色彩 可拓数据挖掘 规律
社区老年高血压患者的用药情况分析与规律探讨 预览
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作者 谈亚利 《临床医药文献电子杂志》 2019年第27期21-22,共2页
目的分析探讨社区老年高血压患者的用药情况及规律。方法调查本社区285例老年高血压患者的用药品种、联合用药、使用效果、不良反应及依从性等。结果在调查的285例患者中,使用中药降压39例,西药179例,中药加西药67例,使用降压效果最好... 目的分析探讨社区老年高血压患者的用药情况及规律。方法调查本社区285例老年高血压患者的用药品种、联合用药、使用效果、不良反应及依从性等。结果在调查的285例患者中,使用中药降压39例,西药179例,中药加西药67例,使用降压效果最好的为中药联合西药,达到68.66%;在使用西药的患者中,单独用药125例,使用较多的为血管紧张素Ⅱ受体拮抗剂、钙拮抗剂;严格按照医嘱服药169例,占59.30%;不能定时完成服药116例,占40.70%。结论社区老年高血压患者多选择西药单独服用,安全性较好,患者依从性尚可,不过仍需对患者加强健康教育以及心理建设。 展开更多
关键词 高血压 老年 社区 用药情况 规律
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