基于多跳蜂窝网的组位置管理策略

提出了一种成组进行位置管理的策略,分析了彼此临近的移动台组成一个自组织网的基本网络模型,提出了向中继点注册,由中继点进行信令压缩,组成组控制信令,成批向网络报告位置的位置更新的策略;采用M/M/n/n模型具体比较了批处理方案与传统方案的性能,说明作者的方案不仅减少了移动台的发射功率,还大量节省了频率资源,增加了系统的吞吐能力。

一类3RPⅢ级杆组的位置分析

本文采用消无法导出了ＧＮＴ高速包缝机下差动送料机构所含的一类３ＲＰⅢ级杆组的位置分析公式，该类３ＲＰⅢ级杆组的位置分析通过求解一元二次代数方程即可得到。这对于ＧＮＴ高速包缝机的下差动运料机构的运动分析与优化综合均有一定意义。

大型商场中移动群组识别与位置预测方法

根据大型商场中人员密度大且流动性强的特点,对室内场所中的动态群组进行识别和位置预测,提出移动对象位置和方向特征相结合的空间-时序聚类群组识别方法。在群组位置预测中,考虑数据集的增量更新给出序列树的存储结构,只需扫描一次数据库即可得到频繁区域序列以及对应的关联规则,同时能够进行单步和多步的位置预测。给出结合群组出现时间和人数的位置预测方法,提高群组位置预测的准确度。在ATC数据集进行实验,结果表明,当群组对象检测率达到87.6%时,该方法群组识别准确度可达到90.3%,与LAR、TLAR等算法相比,单步和多步位置预测准确度分别达到91.2%和33.8%。

给定连架杆对应多位置时的四杆机构综合

讨论了四杆机构在给定连架杆多组对应位置时的解的情况，采用矢量法列出机构的运动方程，用最小二乘法求出方程的最优近似解．

具有模组识别及数据存储功能的智能模组控制系统

逐点校正技术在LED行业已经被广泛应用,使得LED显示屏的均匀性得到很大的提升。但是,由于在通常LED系统中,体现模组特性的逐点校正数据是保存在接收卡中的。由于数据载体与其所体现对象的不一致,导致了在模组更换后,校正数据不能体现其实际相关的模组,造成更换位置的均匀性变差。这种因素的存在制约了逐点校正技术的使用。为从根本上解决这一问题,我们提出了智能模组的解决方案。此方案将校正数据存储在模组上,当软件检测到模组被更换后,自动将此模组的校正数据读出、并传输到接收卡,从而实现校正数据的自动更新。同时,此系统在模组间只需增加一根信号线进行通讯(即:单线传输),具备高可靠性。最后、此系统可具备低成本的模组故障辅助检测、电源检测功能,具备较高的实用价值。

Group scheduling with general position-dependent effect

In order to investigate more realistic group scheduling problems with position-dependent effects,the model of general position-dependent group scheduling is proposed,where the actual group setup times and actual processing times are described by general functions of the normal group setup time and position in the sequence.These general functions are not assumed to have specific function structures,and are not restricted to be monotone.By mathematical analysis and proof,each considered problem is decomposed into a group scheduling process and a job scheduling process,and each scheduling process is transferred into the classic assignment problem or the classic single-machine sequence problem,and then the computational complexity to solve the considered problem is analyzed.Analysis results show that,even with general position-dependent job processing times,both the single machine makespan minimization group scheduling problems and the parallel-machine total load minimization group scheduling problems remain polynomially solvable.

宁静人生

“当夜耶和华向他显现。”(创26:2,4) 天地之间,像一个三维坐标。你活着,总会有你的位置。 有人希望自己活得壮烈,找个大的位置坐上,显赫一世;有人希望自己活得平凡,找个小的位置坐上,舒适安逸。但无论位置是大是小。

主动变结构悬架研究现状综述

悬架系统的各项性能要求互相影响和冲突。被动悬架在设计时会平衡各向性能指标,设计完成后难以依据行驶工况实时调节;可控悬架能依据工况动态调整悬架系统性能,给出了改善悬架性能的方法。可控悬架按其工作原理可分为全主动悬架、半主动悬架和主动变结构悬架。其中,主动变结构悬架是通过动态控制悬架几何结构来动态调节悬架性能,相比常见全/半主动悬架,能有效兼顾性能、效率和能耗;相比传统被动悬架,可以动态调整悬架系统性能,释放悬架潜能。本文按照执行方式将主动变结构悬架分为主动车轮外倾角、主动车轮前束角和主动弹簧减振器组位置三类,分别分析各自特点及发展现状,并从构型设计、控制系统及其智能网联化下的机遇与挑战三方面剖析了主动变结构悬架的发展趋势。

Colonoscopic yield of colorectal neoplasia in daily clinical practice

AIM:To assess the prevalence and location of ad-vanced neoplasia in patients undergoing colonoscopy,and to compare the yield per indication.METHODS:In a multicenter colonoscopy survey (n = 18 hospitals) in the Amsterdam area (Northern Holland),data of all colonoscopies performed during a three month period in 2005 were analyzed. The location and the histological features of all colonic neoplasia were recorded. The prevalence and the distribution ofadvanced colorectal neoplasia and differences in yield between indication clusters were evaluated. Advanced neoplasm was defi ned as adenoma > 10 mm in size,with > 25% villous features or with high-grade dyspla-sia or cancer.RESULTS:A total of 4623 eligible patients underwent a total colonoscopy. The prevalence of advanced neo-plasia was 13%,with 281 (6%) adenocarcinomas and 342 (7%) advanced adenomas. Sixty-seven percent and 33% of advanced neoplasia were located in the distal and proximal colon,respectively. Of all patients with right-sided advanced neoplasia (n = 228),51% had a normal distal colon,whereas 27% had a syn-chronous distal adenoma. Ten percent of all colono-scopies were performed in asymptomatic patients,7% of whom had advanced neoplasia. In the respective procedure indication clusters,the prevalence of right-sided advanced neoplasia ranged from 11%-57%. CONCLUSION:One out of every 7-8 colonoscopies yielded an advanced colorectal neoplasm. Colonoscopy is warranted for the evaluation of both symptomatic and asymptomatic patients.

Reasonable location parameters of pick and nozzle in combined cutting system

The drum shearer and high pressure water jet combined cutting system is an effective technology to cut hard coal-rock, but one problem of the technology is the choice of pick and nozzle location parameters. In order to solve the problem, the process and mechanism of combined cutting arc studied and mining seepage catastrophe theory is used to construct the mathematic and physical model of combined cutting hard coal-rock. Based on the model and detailed analysis of combined cutting mechanism, the single pick and nozzle combined cutting test-bed is built to test the main pick and nozzle location parameters of drum shearer and water jet combined cutting system. Test results show that the best vertical distance between the pick-tip and nozzle center point is the sum of cutting thickness and proper target distance in the Y axial direction; the best horizontal distance is the length between pick-tip point and coal-rock surface bursting crack point in the X axial direction. The best incident angle of water jet should be the same as the bursting crack line＇s angle in theory, but considering other important factors comprehensively, it is more reasonable when the incident angle of water jet is 90°.

The Function of Education in Codification of Radif in Iranian Dastgahi Music

The goal of this research is to investigate the ideas that functioned in shaping thought of Radif in Iranian Dastgahi music. In this regard by preparing the reasons, we pay attention to the function of education in codification of Radif. Although Iranian traditional music has long history but its codification to seven Dastgah-s and five Avaz-es in the format of Radif is attributed to Qajar Dynasty in the 19th century. In this transformation, Mirza Abdollah, Tar-Player of the Nasser al-Din Shah Period, has played an important role in final codification of Radif. Due to the truth that the past masters scrimped in music education, and Mirza Abdollah had encountered with problems to learn music, hence he has mostly cared about music education in adulthood, and it is probable that one of the reasons in collecting Gusheh-s （approximately a small piece of the Iranian Dastgahi music） and organizing them into coherent sets was making simplicity for the students to learn. Furthermore, masters who seriously and continuously have taught after Mirza Abdollah, left a narration （version） of Radif. On the other hand, definite patterns in placement of Gusheh-s and phrases of the Radif have been organized in a manner that makes educational function for it.

Multi-location Evaluation of Turmeric Genotypes in Nigeria

Fifteen turmeric genotypes from the germplasm held at National Root Crops Research Institute Umudike, Nigeria, were evaluated during the season of 2012-2013 at four locations-Jos （8.3833°N, 7.1833°E, 1,200 m a.s.l.）, Otobi （7.11667°N and 8.08333°E）, Umudike （5.4758°N, 7.5489°E） and Igbariam （6.4°N and 6.93333°E）-in order to select high yielding and stable turmeric cultivars with good quality for release in Nigeria. At each location, the experiment was laid out in randomized complete block design （RCBD） in three replications. Plot size was 9 m2. Data were collected on sprout count, plant height, number of tillers, number of leaves, main pseudo stem girth, rhizome number and weight. Analysis of variance was carried out on the combined data using GenStat Discovery Edition software. Results based on the combined data from four locations indicate that turmeric genotypes did not vary in percentage emergence and number of leaves. However, they varied in height, main pseudo stem girth, tillering, number and yield of fresh rhizomes. The effect of location on all attributes was significant （P 〈 0.05） with Jos location giving consistently the least values for all attributes thus suggesting that this location may not be suitable for the commercial production of turmeric. Genotype by environment interaction for most attributes was not significant indicating that the genotypes responded the same way across the locations. Ten genotypes, viz., UT39, UT44, UT46, UT58, UT50, UTI4, UT41, UT6, UT38 and UT35, are identified as promising and require further evaluation as pre-condition for nomination for official release to farmers.

A scalable, locality aware, fault-tolerant, and decentralized location scheme for distributed networks

This paper presents Isotope, an efficient, locality aware, fault-tolerant, and decentralized scheme for data location in distributed networks. This scheme is designed based on the mathematical model of decentralized location services and thus has provable correctness and performance. In Isotope, each node needs to only maintain linkage information with about O(log n) other nodes and any node can be reached within O(log n) routing hops. Compared with other related schemes, Isotope’s average locating path length is only half that of Chord, and its locating performance and locality-awareness are similar to that of Pastry and Tapestry. In addition, Isotope is more suitable for constantly changing networks because it needs to exchange only O(log n) O(log n) messages to update the routing information for nodes arrival, departure and failure.

The Influence of Surge Arrester Location on Over-Voltages Caused by Direct Lightning Strikes to MV Lines

In the period 2003-2011, lightning over-voltages accounted for about 47% of the total number of distribution transformer failures observed in the service area ofAES Sul, a power company that operates in the state of Rio Grande doSul, in South Brazil. This paper presents the results of an investigation on the influence of the distance between transformer and MV arresters on the surges at the transformer windings caused by direct strikes to the MV network. The analysis, performed through simulations using the Alternative Transients Program, shows that in general higher voltages are produced by subsequent strokes. Although in relation to the primary side the surges transferred to the secondary are much less affected by the distance between transformers and primary arresters, such distance should always be kept as short as possible in order to reduce the probability of occurrence of transformer failures due to over-voltages at the MV bushings.

Advances and applications in spatial transcriptomics

Spatial transcriptomics is an organizational study done on tissue sections that preserves the spatial information of the sample.Spatial transcriptomics aims to combine spatial information with gene expression data to quantify the mRNA expression of a large number of genes in the spatial context of tissues and cells.As a paradigm shift in biological research,spatial transcriptomics can provide both spatial location information and transcriptome-level cellular gene expression data,elucidating the interactions between cells and the microenvironment.From the understanding of the entire functional life cycle of RNA to the characterization of molecular mechanisms to the mapping of gene expression in various tissue regions,by choosing the appropriate spatial transcriptome technology,researchers can achieve a deeper exploration of biological developmental processes,disease pathogenesis,etc.In recent years,the field of spatial transcriptomics has ushered in several challenges along with its rapid development,such as the dependence on sample types,the resolution of visualized genes,the difficulty of commercialization,and the ability to obtain detailed single-cell information.In this paper,we summarize and review the four major categories of spatial transcriptome technologies and compare and analyze the technical advantages and major challenges of multiple research strategies to assist current experimental design and research analysis.Finally,the importance of spatial transcriptomics in the integration of multi-omics analysis and disease modeling as well as the future development prospects are summarized and outlined.

9．看图猜字

９．看图猜字刘 （南昌市西湖区教研室）［活动要求］１．通过活动，学习汉字的结构，了解我国汉字的构，字规律。２．培养学生观察、分析和想象能力。［活动准备］１．老师准备２１幅图片，一块小黑板。２．各组准备３幅图片。［活动过程］一、老师揭题、明示方法。（...

Lower Triassic Smithian-Spathian Boundary at West Pingdingshan Section in Chaohu,Anhui Province

The West Pingdingshan Section in Chaohu, Anhui Province, has been extensively studied in recent years and become one of the classic Lower Triassic sequences well-clarified in multiple stratigraphies. Also it is an important section that defines the Smithian-Spathian (S-S) boundary within the Olenekian Stage. The S-S boundary strata at the section are restudied in high-resolution conodont biostratigraphy and carbon isotopes. The refined S-S boundary defined by the FAD of conodont Neospathodus pingdingshanensis is at 30 cm above the base of Bed 52, corresponding to a rapid diversification of conodonts. A sharp positive shift of δ13Ccarb curve co-occurs at the S-S boundary and it can be used as a key reference to define the boundary. The defined S-S boundary position and carbon isotopes curve can be well correlated globally.

Structural topology optimization: Extensibility and attainability

Extensibility and attainability of topology optimization are discussed by investigating a variety of simultaneous topology opti-mization methods extended from the standard formulation.First,the state of the art is highlighted through systematic classification of developed methods,such as simultaneous topology optimizations of microstructure and macrostructure,structure and supports,structure and design-dependent loads,structure and locations of involved components.Second,some recent results about simultaneous topology optimization of structure and applied loads are presented.It is shown that the simultaneous topology optimization is an integrated methodology that extends the concept of standard topology optimization in the sense of systematic design.The presence of more than one kind of design variable of different nature makes the optimization problem complex but enlarges the design space to attain the optimization.

PREDICTING SUBCHLOROPLAST LOCATIONS OF PROTEINS BASED ON THE GENERAL FORM OF CHOU＇S PSEUDO AMINO ACID COMPOSITION： APPROACHED FROM OPTIMAL TRIPEPTIDE COMPOSITION

Chloroplasts are organelles found in plant cells that conduct photosynthesis. The subchloroplast locations of proteins are correlated with their functions. With the availability of a great number of protein data, it is highly desired to develop a com- putational method to predict the subchloroplast locations of chloroplast proteins. In this study, we proposed a novel method to predict subchloroplast locations of proteins using tripeptide compositions. It first used the binomial distribution to optimize the feature sets. Then the support vector machine was selected to perform the prediction of subchloroplast locations of proteins. The proposed method was tested on a reliable and rigorous dataset including 259 chloroplast proteins with sequence identity ≤ 25%. In the jack-knife cross-validation, 92.21% envelope proteins, 93.20% thylakoid mem- brane, 52.63% thylakoid lumen and 85.00% stroma can be correctly identified. The overall accuracy achieves 88.03% which is higher than that of other models. Based on this method, a predictor called ChloPred has been built and can be freely available from http：//cobi.uestc.edu.cn/people/hlin/tools/ChloPred/. The predictor will provide important information for theoretical and experimental research of chloroplast proteins.