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利用海雜波推算推算海面波場特性
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52296
title: 利用海雜波推算推算海面波場特性 abstract: Abstract: It has been pointed out by many researchers that there are many advantages to use a marine to
measure wave field characteristics in coastal regions. However, monitoring wave fields through radio
wave reflections belongs to the category of indirect measurements. Just like all other similar methods,
the results acquired from these kind of measurements are not actual physical quantities of interest.
Some transfer function(s) must be used so that the real world can be recovered. The NTOU has
started analyzing radar images in order to obtain information of the wave field around Taipei Harbour.
Previous studies have shown that althrough discrepencies between measured and estimated significant
wave heights exist, the latter follows the trend of the former. Nontheless, the results also show that
there are times where estimated wave heights were unrealistically highere than those measured. In
this paper, we reanalyzed the radar images available. It is shown that the present results are more
satisfactory.
<br>智慧家庭主要功能需求探討
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52295
title: 智慧家庭主要功能需求探討 abstract: 隨著物聯網時代到來，智慧家庭的概念成形已久，但消費端依舊無明顯的需求，因此現在的首要目標是創造需求，有了大量的需求，才會有更多的機會。個案公司創立於民國7年，以家電起家，這兩年更積極投入「智慧節能」與「物聯網」相關領域，根據此市場趨勢，個案公司於土城推出之建案正首次以「智慧家庭」為核心。本研究欲探討客戶對「智慧家庭功能」需求為何，其透過文獻、專家及個案公司建案資訊彙整智慧家庭主要功能項目，再以修正式德菲法篩選重要功能項目並建立AHP層級架構進行權重分析，其排序出「智慧家庭主要功能」需求權重後提出結果討論，以提升個案公司未來發展相關產品應用時的成功機率及後續建案之參考。
<br>Inertial effects on the performance of a bottom-hinged oscillating wave surge converter
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52291
title: Inertial effects on the performance of a bottom-hinged oscillating wave surge converter abstract: Abstract: This paper theoretically and experimentally investigates the inertial effects of the flap body on the performance of a bottom-hinged oscillating wave surge converter (BH-OWSC). A two-dimensional (2D) hydrodynamic theory for a BH-OWSC based on the assumption of potential flow is developed to show that one simple but critical parameter, i.e., the square of sum of three mechanical-impedance terms associated with the inertial effects, can precisely characterize the performance trend of a BH-OWSC. Model testing in a small-scaled wave basin follows to validate the theoretical formulations with a flap body consisting of multiple hollow cylinders into which water can be filled individually to alter the values of flap's inertial parameters. The performance of each inertial specification of the flap model is evaluated based on the measurement of the mean water discharge from the hydraulic pump (or the power take-off). Finally, the “near resonant condition” has been validated experimentally by altering the inertial parameters of the flap. Thus, the aforementioned parameter is shown to be capable of characterizing the inertial effects on the performance of a BH-OWSC, and the minimization of it will maximize the power capturing performance of a BH-OWSC. Consequently, the parameter can be used for design guidelines of the flap body in its inertial aspect, such as locating the center of mass and determining the geometric dimensions of a flap body.
<br>THE TREFFTZ TEST FUNCTIONS METHOD FOR SOLVING THE GENERALIZED INVERSE BOUNDARY VALUE PROBLEMS OF LAPLACE EQUATION
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52290
title: THE TREFFTZ TEST FUNCTIONS METHOD FOR SOLVING THE GENERALIZED INVERSE BOUNDARY VALUE PROBLEMS OF LAPLACE EQUATION abstract: Abstract: The issue of data completion is important for the elliptic type partial differential equation. In the inverse Cauchy problem, we need to complete the boundary data by over-specifying Dirichlet and Neumann data on a portion of the boundary. In this paper, we numerically solve the generalized inverse boundary value problems of Laplace equation in a rectangle with one boundary function and two boundary functions missing, which are more difficult than the inverse Cauchy problem. By using the technique of a boundary integral equation method together with a specially designed Trefftz test function, we can complete the boundary data by requiring minimal extra data. Then solving the Laplace equation with the given data and recovered data by the multiple-scale Trefftz method, we can find the numerical solution in the interior nodal points.
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