In the study, the thickness of wave moved-sediment layers was measured under regular wave conditions as well as the initial slope of sea bed with grain size of medium diameter 0.237mm and 0.128mm. The initial bottom slope ( tan£\) is 1/45, and nineteen wave conditions were studied. For each case, we analyzed the results after about 28800 waves were made. Sands are similar density and grain size but different colors. After wave action, the clear boundary between the two layers (two different colors) of sands will be mixed into gray color by wave-induced vortex.According to unmoved-layer(white) and gray-layer to get the total wave-moved sediment quantity. Finally, we get the relationship between the wave-moved sediment quantity per wave( q) and two parameters( £`b and £Kb ) which were established by Liao (2005, doctorate draft). The grain size does not affect £`b , and we get the q= 6.486*10^-5*£`b . The relationships between and ¡G 0.110mm gets q=5.103*10^-6£Kb , 0.128mm gets q=1.139*10^-5*£Kb, and 0.237mm gets q=1.933*10^-5*£Kb .

The operation in assignment of manpower needs in the country is still in the primary stage. The present implementation of labor ordinance does not have effective regulations and it is not so clear. Therefore it easily creates confusion and attribution of responsibility problems. Aside from these, enterprise does not have a set of effective operation method in allocation between regular employee and assignment of manpower needs. Therefore, the present stage in the allocation of manpower is mostly the line aspect of thinking mode. Due to the lack of whole value concept in system thinking therefore the allocation between regular employee and assignment of manpower needs create unharmonious phenomenon which bring about the enterprise in assignment of manpower needs that the cost of personnel expenses did not decrease but increases. Because the method in allocation of manpower in production line and the variation of customer order that it must be a development variation. Therefore, we must depend in the complete system thinking and setting of strategy in order to let the interaction relationship of both party reaches the optimum. The aim of this research is to use the strategy map and the method of System Dynamics to proceed in the regulation, simulation and testing in order to analyze in finding the most suitable allocation method between regular employee and assignment of manpower needs. Due to the direct production manpower and the existence of enterprises, the lasting of enterprises are closely related. But in the general enterprises toward the strategy in allocation of direct manpower and implementation still use the direct line of thinking method. Therefore it is very difficult to handle the development variation of environment. It is only adequately let the manpower resources strategy of enterprises to draw a casual loop map then use the related aspect of strategy map. Thru the emphasis of relationship between manpower resource strategy and enterprises strategy then use the System Dynamics to establish model. At the same time, perform the simulation of development and analysis in order to assist the company cases in manpower development allocation strategy more effective. This research is base on the research aim, confer documents, research of company cases, cost and effect related feedback analysis. System Dynamics establishes the subject pattern, testing, situation and policy simulation, analysis, conferment that sum up and arrange the conclusion of this research. 1. Flexibility of Manpower Resource Strategy: Assignment of personnel will let the company cases in the aspect of using manpower to have flexibility and decrease the cost of personnel expenses. At the same time, the same line of enterprises will have more competition and greater survival space. 2. Drawing of Manpower Resources Strategy Map: strategy map can help enterprises ¡§focusing¡¨ and ¡§connection¡¨ in setting the strategy. It can let all personnel clearly understand the target and direction of the strategy. At the same, in the setting of model, thru the strategy map can set the bounder of the system. 3. Using System Thinking to establish the cost and effect feedback map and System Dynamics Pattern: Thru the system thinking pattern of the System Dynamics draw the cost and effect feedback map. Aside that it can test the general thinking and direct thinking. It also can let the system to have more intersystem relationship. 4. Let the Simulation Result of the System Dynamics Serves as Reference of the Enterprises Manpower Strategy Regulations: using system thinking to establish system pattern, thru the testing of pattern, simulation and analysis, use the result of simulation to provide enterprises as reference in setting the direct manpower resource strategy regulations. Using the Simulation Testing of the System Dynamics to find for the Most Suitable Solution in the System: Thru the development simulation of the system pattern, we can find out the most suitable solution that belongs to the enterprises.

Polygonal meshes are a common way of representing 3D surface models in many different areas of computer graphics and geometry processing. However, these models are becoming more and more complex which increases the cost of processing these models. In order to reduce this cost, mesh simplification algorithms are developed. Another important property of a polygonal mesh model is that whether it is regular or not. Regular meshes have many advantages over the irregular ones in terms of memory requirements, efficient processing, rendering etc. In this thesis work, both mesh simplification and regular remeshing algorithms are studied. Moreover, some of the popular mesh libraries are compared with respect to their approaches and performance to the mesh simplification. In addition, mesh models with disk topology are remeshed and converted to regular ones.

The purpose of this study was to investigate 7th-grade students&rsquo / typical errors and possible misconceptions in graphs concept before and after the regular mathematics instruction. The study was conducted in an elementary school in the 2nd semester of 2009-2010 academic year in Afyonkarahisar. A mathematics teacher and 71 7th-grade students participated in the study. The data were collected through achievement tests administered to the students before and after the instruction and interviews conducted with the teachers and the selected eight students based on the results of the pretest and posttest. The teacher&rsquo / s instruction was also observed. Students were not exposed to a special treatment, but rather the influence of regular mathematics instruction on a group of 7th-grade students from the four classes taught by the same teacher was investigated. The results of data analysis indicated that 7th-grade students had common typical errors and possible misconceptions about the usage, construction, reading, and interpretation of line, bar, and circle graphs before and after the regular instruction. The comparison of pretest and posttest results showed that while there were differences between the students&rsquo / errors and misconceptions in pretest and posttest, some misconceptions were decreased or increased, or did not change from pretest to posttest. The interviews conducted with the selected students addressed that the students had errors and misconceptions in graphs concept. Findings of the observation of teacher&rsquo / s instruction showed that the teacher did not fully discover and prevent students&rsquo / typical errors and possible misconceptions. Moreover, the findings of the interview conducted with the teacher indicated that her knowledge of students&rsquo / errors and misconceptions were limited. The results of this study showed that teachers&rsquo / planning was important in understanding students&rsquo / typical errors and possible misconceptions. Inservice training of teachers should put more emphasize in effective planning and understanding students&rsquo / typical errors and possible misconceptions.

In the past, information was stored more or less well-structured in database. Nowadays, a lot of information is presented in unstructured format. The management of and retrieval from such large vast of textual information has been a challenging issue for organizations or individuals. Information extraction is the process of extracting relevant data from semi-structured or unstructured documents and transforming them into structured representations. Many information extraction learning techniques have been proposed. However, they are ineffectiveness on unstructured documents. Thus, in the research, we proposed a new information extraction learning algorithm, called LIEF, that enhancing existing information extraction learning techniques. According to the empirical evaluations on news documents that are unstructured format, the LIEF algorithm proposed showed its capabilities in accuracy rate.

<p>The first part of this thesis studies tail probabilities forelliptical distributions and probabilities of extreme eventsfor multivariate stochastic processes. It is assumed that thetails of the probability distributions satisfy a regularvariation condition. This means, roughly speaking, that thereis a non-negligible probability for very large or extremeoutcomes to occur. Such models are useful in applicationsincluding insurance, finance and telecommunications networks.It is shown how regular variation of the marginals, or theincrements, of a stochastic process implies regular variationof functionals of the process. Moreover, the associated tailbehavior in terms of a limit measure is derived.</p><p>The second part of the thesis studies problems related toparameter estimation in stochastic models with long memory.Emphasis is on the estimation of the drift parameter in somestochastic differential equations driven by the fractionalBrownian motion or more generally Volterra-type processes.Observing the process continuously, the maximum likelihoodestimator is derived using a Girsanov transformation. In thecase of discrete observations the study is carried out for theparticular case of the fractional Ornstein-Uhlenbeck process.For this model Whittle’s approach is applied to derive anestimator for all unknown parameters.</p>

It is a well established fact, that – in the case of classical random graphs like variants of Gn,p or random regular graphs – spectral methods yield efficient algorithms for clustering (e. g. colouring or bisec- tion) problems. The theory of large networks emerging recently provides convincing evidence that such networks, albeit looking random in some sense, cannot sensibly be described by classical random graphs. A vari- ety of new types of random graphs have been introduced. One of these types is characterized by the fact that we have a fixed expected degree sequence, that is for each vertex its expected degree is given. Recent theoretical work confirms that spectral methods can be success- fully applied to clustering problems for such random graphs, too – pro- vided that the expected degrees are not too small, in fact &ge; log⁶ n. In this case however the degree of each vertex is concentrated about its expectation. We show how to remove this restriction and apply spectral methods when the expected degrees are bounded below just by a suitable constant. Our results rely on the observation that techniques developed for the classical sparse Gn,p random graph (that is p = c/n) can be transferred to the present situation, provided we consider a suitably normalized ad- jacency matrix: We divide each entry of the adjacency matrix by the product of the expected degrees of the incident vertices. Given the host of spectral techniques developed for Gn,p this observation should be of independent interest.

We derive at-the-money call-price and implied volatility asymptotic expansions in time to maturity for a selection of exponential Lévy models, restricting our attention to asset-price models whose log returns structure is a Lévy process. We consider two main problems. First, we consider very general Lévy models that are in the domain of attraction of a stable random variable. Under some relatively minor assumptions, we give first-order at-the-money call-price and implied volatility asymptotics. In the case where our Lévy process has Brownian component, we discover new orders of convergence by showing that the rate of convergence can be of the form t¹/ᵃℓ(t) where ℓ is a slowly varying function and $\alpha \in (1,2)$. We also give an example of a Lévy model which exhibits this new type of behavior where ℓ is not asymptotically constant. In the case of a Lévy process with Brownian component, we find that the order of convergence of the call price is √t. Second, we investigate the CGMY process whose call-price asymptotics are known to third order. Previously, measure transformation and technical estimation methods were the only tools available for proving the order of convergence. We give a new method that relies on the Lipton-Lewis formula, guaranteeing that we can estimate the call-price asymptotics using only the characteristic function of the Lévy process. While this method does not provide a less technical approach, it is novel and is promising for obtaining second-order call-price asymptotics for at-the-money options for a more general class of Lévy processes.

Complex software-security policies are dicult to specify, understand, and update. The same is true for complex software in general, but while many tools and techniques exist for decomposing complex general software into simpler reusable modules (packages, classes, functions, aspects, etc.), few tools exist for decomposing complex security policies into simpler reusable modules. The tools that do exist for modularizing policies either encapsulate entire policies as atomic modules that cannot be decomposed or allow ne-grained policy modularization but require expertise to use correctly. This dissertation presents a policy-composition tool called PoliSeer [27, 26] and the PoCo policy-composition software-security language. PoliSeer is a GUI-based tool designed to enable users who are not expert policy engineers to exibly specify, visualize, modify, and enforce complex runtime policies on untrusted software. PoliSeer users rely on expert policy engineers to specify universally composable policy modules; PoliSeer users then build complex policies by composing those expert-written modules. This dissertation describes the design and implementation of PoliSeer and a case study in which we have used PoliSeer to specify and enforce a policy on PoliSeer itself. PoCo is a language for specifying composable software-security policies. PoCo users specify software-security policies in terms of abstract input-output event sequences. The policy outputs are expressive, capable of describing all desired, irrelevant, and prohibited events at once. These descriptive outputs compose well: operations for combining them satisfy a large number of algebraic properties, which allows policy hierarchies to be designed more simply and naturally. We demonstrate PoCo's capability via a case study in which a sophisticated policy is implemented in PoCo.

Personer med autismspektrumtillstånd tillhör gruppen som ökat mest inom insatsen daglig verksamhet. Då insatsen tillkom utformades den främst efter personer med utvecklingsstörning eller med stora fysiska funktionshinder. Syftet med studien är att undersöka hur daglig verksamhet är anpassad efter personer med Aspergers syndrom. Utifrån intervjuer med personal på daglig verksamhet visar resultaten på att daglig verksamhet fungerar bra och är anpassad efter individuella behov. Samtidigt visar resultaten på att en utveckling av daglig verksamhet behövs men upplevs svår att genomföra. Slutsatserna är att det kan vara svårt att anpassa en verksamhet efter personer med Aspergers syndrom då de inte alltid beskriver vilka behov de har, att behov kan se väldigt olika ut individer emellan samt att deras förmågor kan ses som både styrkor och svagheter. En slutsats är även att arbetet med målgruppen bör kompletteras med arbete utifrån en samhällsnivå för att en utveckling mot en anpassad verksamhet ska möjliggöras. / People with autism spectrum disorders belong to the group that has increased most within the daycare center. At the introduction, the daycare center was primarily designed for people with intellectual or major physical disabilities. The study's purpose is to examine how daycare center activities are adapted for those with Asperger’s syndrome. Interviews with daycare center staff show that the activities function well and are adapted for individual needs. However, the results also show that a development of the activities is needed but believed difficult. The conclusions are that it seems to be difficult to adapt activities for people with Asperger’s syndrome since they not always describe their needs, that their needs may be very individual, and that their abilities can be seen as both strengths and weaknesses. Another conclusion is that the work with the target group should be complemented with work at a community level, to enable development towards adapted activities.