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Chips Ahoy! Spot
趣多多可爱动画

中国图象图形学报 , 2003,
Abstract: 谁都吃过趣多多饼干吧,可是谁见过趣多多在微波炉里的表演 编者按]
Production of iceberg lettuce using mulches
Verdial, Marcelo Fontanetti;Lima, Márcio Santos de;Morgor, átila F.;Goto, Rumy;
Scientia Agricola , 2001, DOI: 10.1590/S0103-90162001000400014
Abstract: mulches bring several benefits to lettuce cultivation. this work evaluated the effect of mulches on the cultivation of iceberg lettuce, cv. lucy brown. the treatment plots were: 1- no mulch and no weed control (control); 2- no mulch and weed control every 15 days; 3- sugarcane bagasse mulch of 2 cm thickness; 4- black plastic mulch; 5- double-faced plastic mulch (silver/black). data were collected in regard to plant cycle when in the field, amount of chlorophyll in the leaves, productivity (individual weight per head) and amount of nutrients absorbed by the leaves. double-faced plastic mulch provides the highest productivity and the highest values for the amount of chlorophyll, nitrogen, phosphorus, sulfur, boron and iron accumulation in the leaves.
Production of iceberg lettuce using mulches  [cached]
Verdial Marcelo Fontanetti,Lima Márcio Santos de,Morgor átila F.,Goto Rumy
Scientia Agricola , 2001,
Abstract: Mulches bring several benefits to lettuce cultivation. This work evaluated the effect of mulches on the cultivation of iceberg lettuce, cv. Lucy Brown. The treatment plots were: 1- no mulch and no weed control (control); 2- no mulch and weed control every 15 days; 3- sugarcane bagasse mulch of 2 cm thickness; 4- black plastic mulch; 5- double-faced plastic mulch (silver/black). Data were collected in regard to plant cycle when in the field, amount of chlorophyll in the leaves, productivity (individual weight per head) and amount of nutrients absorbed by the leaves. Double-faced plastic mulch provides the highest productivity and the highest values for the amount of chlorophyll, nitrogen, phosphorus, sulfur, boron and iron accumulation in the leaves.
An Iceberg Cube Algorithm for Large Compressed Data Warehouses
大型压缩数据仓库上的Iceberg Cube算法

LUO Ji-Zhou,LI Jian-Zhong,ZHAO Kai,
骆吉洲
,李建中,赵锴

软件学报 , 2006,
Abstract: Iceberg Cube is meaningful for OLAP (on-line analysis processing) and compression techniques play more and more important role in reducing the storage of data warehouse and improving the efficiency of data operations. It is really a problem to compute Iceberg Cube efficiently in the compressed data warehouse. The compression techniques of data warehouse are introduced concisely in this paper, and an algorithm to compute Iceberg Cube in compressed data warehouse by mapping-complete methods is proposed. Experimental results show that this algorithm outperforms the direct method that selects Iceberg Cube tuples from the complete computed cube.
Lower bounds for symbolic complexity of iceberg dynamical systems  [PDF]
A. A. Prikhod'ko
Mathematics , 2012,
Abstract: The symbolic complexity of an infinite word $W$ is the function $p_W(l)$ counting the number of different subwords in $W$ of length $l$. In this paper our main purpose is to study the complexity for a class of topological dynamical systems, called iceberg systems, given by the following symbolic procedure. Starting from a given finite word $w_1$ we construct a sequence of words $w_{n+1} = w_n \rho_{a_n(1)}(w_n)...\rho_{a_n(q_n-1)}(w_n)$, where $\rho_a(u)$ is the cyclic rotations of the word $u$ by $a$ positions, and consider an infinite word $W$ extending each $w_n$ to the right. It is shown that for iceberg systems given by the randomized parameters $a_n(j)$ the complexity function almost surely satisfies the estimate $p_W(l) > l^{3-\epsilon}$ for any $\epsilon > 0$ and $l \ge l_0(\epsilon)$, and at the same time it is observed that this estimate represents up to a small correction the optimal lower bound for the complexity function, namely, $p_{w_{n+1}}(l_n) \le l_n^3$ along the subsequence $l_n = |w_n|+1$.
高速排水型方尾船舶的兴波波形与阻力计算  [PDF]
高高
武汉理工大学学报 , 2002,
Abstract: ?探讨了基于nurbs(non-uniformrationalb-splines,非均匀有理b样条)的高阶面元法的高速排水型方尾船舶兴波波形数值模拟与兴波阻力计算问题。由船舶兴波的计算波形作波形积分得到波形阻力,与有关实验值的比较结果表明了该方法对方尾船舶兴波波形数值计算的有效性
On ergodic properties of iceberg transformations. I: Approximation and spectral multiplicity  [PDF]
A. A. Prikhod'ko
Mathematics , 2010,
Abstract: We investigate a class of mixing dynamical systems around the concept of iceberg transformation. In brief, an iceberg transformation is defined using symbolic language as follows. We build a sequence of words such that the next word is a concatenation of rotated copies of the previous word. For example, a word CAT can turn into CAT.ATC.TCA.TCA.CAT.ATC, then we repeat the procedure applying it to this new word and so on. Geometrically, given an invertible measure preserving transformation $T$ an iceberg is a union of two icelets for the map $T$, one direct and one reverse with common base set, where icelet is defined in a similar way as Rokhlin tower $B \sqcup TB \sqcup \ldots \sqcup T^{h-1}B$, namely, an icelet is a sequence of disjoint measurable sets $\{B_0, B_1, \ldots, B_{h-1}\}$ such that the levels are nested: $B_{j+1} \subseteq TB_j$. Reverse icelet is defined as icelet for $T^{-1}$, and it grows towards the past. Iceberg transformation is approximated by a sequence of icebergs, resembling the behaviour of rank one ergodic maps. It is show that a class of random iceberg transformations almost surely has simple spectrum, $1/4$-local rank property and spectral type $\sigma$ such that $\sigma \conv \sigma \ll \la$ where $\la$ is the Lebesgue measure on the circle $S^1$.
Evalution of the “Iceberg Phenomenon” in Johne's Disease through Mathematical Modelling  [PDF]
Gesgam Magombedze, Calistus N. Ngonghala, Cristina Lanzas
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0076636
Abstract: Johne's disease (JD) is a chronic, enteric disease in ruminants caused by Mycobacterium avium subsp. paratuberculosis (MAP). Disease progression follows four distinct stages: silent, subclinical, clinical and advanced. Available diagnostic tests have poor sensitivity and cannot detect early stages of the infection; as a result, only animals in the clinical and advanced stages, which represent the tip of the ‘iceberg’, are identified through testing. The Iceberg Phenomenon is then applied to provide estimates for JD prevalence. For one animal in the advanced stage, it is assumed that there are one to two in the clinical stage, four to eight in the subclinical stage, and ten to fourteen in the silent stage. These ratios, however, are based on little evidence. To evaluate the ratios, we developed a deterministic ordinary differential equation model of JD transmission and disease progression dynamics. When duration periods associated with the natural course of the disease progression are used, the above ratios do not hold. The ratios used to estimate JD prevalence need to be further investigated.
做快乐的生物老师———谈高中生物教学的“勤”与“趣”  [PDF]
杨志泳
华南师范大学学报(自然科学版) , 2014,
Abstract: 新课改中倡导的教育教学方式及理念正在实施.作为一名长期担任高三教学工作的老师,作者认为在高中生物教学中,教师在钻研教材,强化基础方面,应做到科学地、恰到好处地用一些方法去处理好“教”与“学”的关系,提高学生学习生物的兴趣,让学生在学到生物知识的同时,与老师一起共同分享到生物课中“教”与“学”之间的快乐与收获.为此作者在教学实践中,科学地采用“勤”、“趣”、“乐”、“学”等方法,取得了较好的教学效果.
再究中药处方“别名”的来源  [PDF]
陈文贵,王秀蓉
中国中药杂志 , 1989,
Abstract: <正>中药处方按理其药名当以中国药典或本草沿用为准,此乃正名也。然因我国是一个幅员辽阔,民族众多,语言复杂的国家,药名在字、音、意上有很强的地方性,故除正名外,尚有土名、俗名、地方名、商品名等等,姑且通称“别名”,致于中药处方或秘、验、单方中遇到形形色色的药名,给配方工作带来麻
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