過濾條件已變更

目前顯示的是舊的搜尋結果,重新按下搜尋按鈕以套用新的過濾條件

191651
博碩士論文
Chia-Ming Chang, 張佳銘
碩士 / 淡江大學 / 資訊工程學系資訊網路與通訊碩士班 / 99 / Network environment in underwater acoustic networks, acoustic signal transmission as a tool. But the sound propagation speed (1500 m / s) much lower than the speed of light (3 * 108 m / s), so compared to the data transmission using electromagnetic waves, high propagation delay will cause the sonar transmission environment huge impact. Particularly in the use of four-way handshaking mechanism to achieve collision avoidance medium access protocol, not only incr...
來源: NDLTD
關鍵字: 水下
System ID: 412300
191652
博碩士論文
Ruei-Ting Dai, 戴瑞廷
碩士 / 淡江大學 / 資訊工程學系資訊網路與通訊碩士班 / 99 / Wireless technology has been developed and used for many years. Due to the nature of water, instead of radio wave, sound wave is used for underwater transmission. Recently, IEEE 802.11 DCF is the most famous MAC protocol but is not suitable for underwater scenarios. Therefore, this proposal mainly focuses on how to modify the Network Allocation Vector (NAV) setting for underwater acoustic network.
來源: NDLTD
關鍵字: 水下
System ID: 412299
191653
博碩士論文
Che-Ming Lo, 羅哲明
碩士 / 國立臺灣海洋大學 / 河海工程學系 / 98 / Due to the constant improvement and innovation of information and communications technology and the increase of frequency range demands, countries all over the world are actively establishing the information infrastructure of optical fiber. Since Taipei City is restricted by the many underground utility pipes and heavy traffic, it is difficult to execute underground construction work. After evaluation, by attaching optical fiber to sewage piping systems, the cost of...
來源: NDLTD
關鍵字: 水下
System ID: 412298
191654
博碩士論文
Peng, Yu-Ting, 彭煜庭
碩士 / 國立臺灣海洋大學 / 資訊工程學系 / 107 / Light scattering and color shift are the main reasons to cause the underwater images distortion when the visible light propagates in the underwater. Scattering effect is brought by the suspended particles in the water that reflect the light in the other direction, it lowers visibility and contrast for the underwater images. The phenomenon of color shift is the presentation of blue or green due to the attenuation of the energy of different wavelengths when the light...
來源: NDLTD
關鍵字: 水下
System ID: 412297
191655
博碩士論文
Chen, Te-Chih, 陳德治
碩士 / 國立臺灣海洋大學 / 系統工程暨造船學系 / 107 / At the stage of diesel submarine concept design, various possibilities must be considered. To reduce the laborious iterations and to save time at this stage, a computer design program based on empirical formula was developed. Following the requirements of owner, this program was able to estimate the required submarine volume, weight, and power. According to the result, time and resource at this stage were reduced. To justify the accuracy of this approach, the re...
來源: NDLTD
關鍵字: 水下
System ID: 412296
191656
博碩士論文
Liu,Hsien-Lung, 劉賢龍
碩士 / 國立臺灣海洋大學 / 河海工程學系 / 107 / Sewage sewers are one of the necessary public buildings for modern cities. They are also an important indicator of urban civilization and quality of life. The Greater Taipei area (North-North Capital Metropolitan Area) is China's largest metropolis, with developed industries and a population of more than 7 million. In the early stage, due to the backward construction of sewage sewers, the water bodies of the freshwater system were seriously polluted, which had a gr...
來源: NDLTD
關鍵字: 水下
System ID: 412295
191657
博碩士論文
Tai-ChunChiu, 邱泰鈞
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 107
來源: NDLTD
關鍵字: 水下
System ID: 412294
191658
博碩士論文
Yen-HungChen, 陳彥宏
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 107
來源: NDLTD
關鍵字: 水下
System ID: 412293
191659
博碩士論文
Cheng-KaiFu, 傅政凱
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 107 / This paper presents the system design of autonomous underwater vehicle(AUV) with dual ballast system and the application of fuzzy theorem on dive movement. The vehicle have four degree-of-freedom which is accomplished by using propulsion system consisted of DC motor and propeller for surge, rudder-turning system for yaw, forward and after ballast tanks for heave and pitch movement. The shape of AUV is deployed similar structure of torpedo which reduces the dra...
來源: NDLTD
關鍵字: 水下
System ID: 412292
191660
博碩士論文
Chih-HaoCheng, 鄭志浩
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 107
來源: NDLTD
關鍵字: 水下
System ID: 412291
191661
博碩士論文
Jheng, Kai-Yi, 鄭凱輿
碩士 / 國防大學理工學院 / 機械工程碩士班 / 106 / AUV (Autonomous Underwater Vehicle) and ROV (Remotely Operated Vehicle) are unmanned underwater vehicles that are widely used for marine environment detection. Therefore, the motion control of unmanned underwater vehicle is an important issue. However, it is difficult to establish an accurate environmental model in underwater environments, so the traditional control method is not suitable for the control of underwater unmanned vehicles. This study uses SeaLion2...
來源: NDLTD
關鍵字: 水下
System ID: 412290
191662
博碩士論文
CHEN, XIN-JIE, 陳信傑
碩士 / 國立虎尾科技大學 / 光電工程系光電與材料科技碩士班 / 107 / In this thesis, we use a multi-wavelength ring laser system as the wavelength selection element .In this system, we using multiple fiber Bragg gratings (FBG) of different wavelengths as comb filters, multi-wavelength lasers are generated by adjusting the polarization controller (PC). In experiment, due to the reflection wavelength of the fiber Bragg grating is highly sensitive to the external strain of temperature or vibration, we measure the ex-ternal str...
來源: NDLTD
關鍵字: 水下
System ID: 412289
191663
博碩士論文
LIN,YUAN-TSAI, 林員在
碩士 / 國立高雄科技大學 / 土木工程系 / 107 / In recent years, all counties and cities have actively promoted sewage sewer construction projects to increase the popularity rate of sewage sewer users. The key to accelerate the popularity rate of sewage sewer users is the acceptance and support of sewer users. Through questionnaire and analysis, 650 questionnaires were issued, and 530 questionnaires were collected, and a total of 429 valid questionnaires were collected., the following are the main analysis result...
來源: NDLTD
關鍵字: 水下
System ID: 412288
191664
博碩士論文
SU,CHUNG-WEI, 蘇崇瑋
碩士 / 國立臺北科技大學 / 光電工程系 / 107 / Underwater Wireless Optical Communication (UWOC) has always been the most important key technology for human beings to study the ocean, including monitoring marine water pollution, exploration of the seabed, and viewing abnormal volcanic activity on the seabed. With the rapid development of UWOC, now for high-speed, long-distance for underwater links has also increased. In this paper, A two-channel Space-Division-Multiplexing(SDM) - based Four-Level Pulse Ampli...
來源: NDLTD
關鍵字: 水下
System ID: 412287
191665
博碩士論文
Yu-Wen Pan, 潘譽文
碩士 / 國立中山大學 / 海下科技研究所 / 107
來源: NDLTD
關鍵字: 水下
System ID: 412286
191666
博碩士論文
Chien-Liang Liao, 廖乾良
碩士 / 國立嘉義大學 / 土木與水資源工程學系研究所 / 105 / The purpose of the study was to assess the quality of reinforced concrete pipes(RCP) commonly used in sewerage. Such as high aluminalement cement RCP(HA-RCP), Portland cement-Type II RCP(II-RCP), coating high aluminalement cement RCP(CA-RCP), Portland cement-Type I add to fly ash RCP(IF-RCP), and Portland cement-Type I add to rice husk ash RCP(IR-RCP). The inside diameter of the testing samples are 400mm to comply with the needs of CNS 3905 to detect strength...
來源: NDLTD
關鍵字: 水下
System ID: 412285
191667
博碩士論文
Zheng xun, 鄭 洵
碩士 / 大葉大學 / 機械工程研究所碩士班 / 95 / The dynamic response of a submersible vehicle to an underwater explosion is a complex problem due to the interaction between the fluid and structure. In the past, extensive reseach was conducted in the field of underwater shock to better understand the effects of blast damage on shock hardening of vehicle structure. The study has involved both physical testing and numerical modeling of uncoated metal cylinders of various configurations such as unstiffened, stiffened...
來源: NDLTD
關鍵字: 水下
System ID: 412284
191668
博碩士論文
CHEN,CHIH-CHUAN, 陳志權
碩士 / 國立雲林科技大學 / 營建工程系 / 106 / Sewer is the important infrastructure in the modern cities and also one of the indicators representing national progress. Due to the late start in Taiwan’s sewer construction, the buildings stand in great numbers in most cities and the back alleys are filled with illegal buildings; meanwhile the road is densely covered with the pipelines concerning people's livelihood. Thus, it is difficult for the current sewer user’s to connect the pipes to affect the user’s popul...
來源: NDLTD
關鍵字: 水下
System ID: 412283
191669
博碩士論文
Bao-Er Gu, 顧寶而
碩士 / 國立臺灣大學 / 工程科學及海洋工程學研究所 / 105 / To study the anti-corrosion and sound-absorbing coating for submarine shell, the Polyurethane(PU) coating with different contents of multiwalled carbon nanotubes (MWCNTs) were used to evaluate the effect in anti-corrosion and sound-absorbing. The previous literatures showed that the PU coating not only can against corrode but also absorb acoustic. Therefore, PU was chosen for the coating of anti-corrosion and sound-absorbing in this study. There are four major...
來源: NDLTD
關鍵字: 水下
System ID: 412282
191670
博碩士論文
Chen, Rui-Yuen, 陳睿岳
碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 106 / The most important parameters that determine the resistance and propulsion of underwater vehicles are geometry and appendages. The focus of this thesis is the numerical simulation of the interaction between the geometry of the underwater vehicle and the flow field between the appendages and its effect on the hull efficiency. Numerical simulation analysis using computational fluid dynamics analysis software ANSYS® Fluent. In this study, DARPA Suboff appearance and f...
來源: NDLTD
關鍵字: 水下
System ID: 412281
191671
博碩士論文
Chuan-Tsung Lee, 李傳宗
博士 / 國立高雄應用科技大學 / 土木工程與防災科技研究所 / 106 / The current of Kuroshio is a steady flow with speed less than 1.5 m/sec. To collect Kuroshio energy for power generation, a power-free underwater vehicle designed for carrying generation turbines works under the sea to resist surface waves of current flow affected by season wind and extreme typhoon waves. In this study, some symmetric profiles of the rudder are proposed and calculated the lifting and drag force in the Kuroshio current to find the optimal ru...
來源: NDLTD
關鍵字: 水下
System ID: 412280
191672
博碩士論文
Heng-RongLin, 林亨融
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 105 / This research uses the Levenberg-Marquardt Method and the commercial package CFD-ACE+ in the development of a submarine shape optimization design. It’s mainly divided into two directions: direction one is to explore the optimal shape of a submarine’s main body; and direction two is to explore the optimal sail shape and its optimal location. First, with reference to the existing basic submarine model, DARPA-SUBOFF, and under the condition of a fixed volume, we ob...
來源: NDLTD
關鍵字: 水下
System ID: 412279
191673
博碩士論文
Liu, Xi-Way, 劉錫維
碩士 / 國立宜蘭大學 / 綠色科技學程碩士在職專班 / 106 / Sewage sewerage system is an indispensable public facility for modern cities. Its function is to solve the problem of urban sewage drainage. The advanced countries in the world are not focusing on the construction of sewage sewers. China has invested large sums of money in the construction of sewage sewers for improvement in the past decade. Improve people's quality of life. At present, the construction areas of the sewage sewer network in China are all built i...
來源: NDLTD
關鍵字: 水下
System ID: 412278
191674
博碩士論文
TU, MENG-JIA, 凃孟佳
碩士 / 國立高雄應用科技大學 / 電子工程系 / 106 / Ocean data sampling is an important technique for observing weather and managing fishery resources in Taiwan. Underwater glider is a kind of unmanned water vehicle that can be endowed with long-term and dangerous underwater detection tasks, to save labor cost, to intelligently gather and to effectively record marine data. In order to cruise in sea for a long time and complete the task of collecting marine information, the navigation system and path planning in sea...
來源: NDLTD
關鍵字: 水下
System ID: 412277
191675
博碩士論文
Hung, Te-Chieh, 洪德傑
碩士 / 國立交通大學 / 工學院精密與自動化工程學程 / 106 / The purpose of this thesis is to investigate the effect of the different deflectors on the drag force of the remotely operated underwater vehicle (ROV) at different working speeds by computational fluid dynamics (CFD). In order to confirm the reliability of the analytical results, we verify the analytical results by the experiment of the drag force of fluid. In this article, we apply κ-ε turbulence model of ANSYS's FLUENT to do the analysis of fluid dynamics ...
來源: NDLTD
關鍵字: 水下
System ID: 412276
191676
博碩士論文
Chiu, Sheng-JI, 邱勝吉
碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 106 / The main purpose of this paper is to design an underwater vehicle with minimum resistance within a specific water displacement, and to discuss the characteristics of resistance and flow field generated by the designed hull geometry model. The design method mainly adapts Virginia Tech Team3 method, which including MATLAB method of programming objective function, constrains of design parameter, and calculate for optimal hull shape with minimum resistance. Then using ...
來源: NDLTD
關鍵字: 水下
System ID: 412275
191677
博碩士論文
Chiang, Hui-Hsiu, 江惠綉
碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 106 / It is an essential and widespread issue to design the prototype of the submarine with low resistance and noise. The characteristics of the wake flow around a submarine, not only directly affect the hydrodynamic performance of the submarine but also the primary source of the hydrodynamic noises generated by the submarine. The fluid noise, propagated when the submarine was navigating underwater, is generally generated by the wall pressure fluctuations and the turbule...
來源: NDLTD
關鍵字: 水下
System ID: 412274
191678
博碩士論文
Chiu, Yu-Shiang, 邱昱翔
碩士 / 國立臺灣海洋大學 / 電機工程學系 / 106 / This paper uses semiconductor process technology to fabricate ultrasonic sensing components for underwater environments. It mainly uses the electro-mechanical conversion characteristics of piezoelectric material lead zirconate titanate Pb(〖Zr〗_0.52 〖Ti〗_0.48) O_3to transmit and receive ultrasonic waves under the water surface. The main structure of the self-made component includes a lower electrode, a buffer layer, a piezoelectric layer, an upper electrode, and a w...
來源: NDLTD
關鍵字: 水下
System ID: 412273
191679
博碩士論文
Shi-Ming Yeh, 葉士銘
碩士 / 國立中興大學 / 水土保持學系所 / 106 / The Tamsui River Sewerage System is the largest sewage treatment system in Northern Taiwan. The treatment scope includes Taipei City and the two near areas, which have a population of 6.5 million, of which about 4.6 million people are served by this system, and the sewage collection area is about 20,000 hectares. Since the sewage treated by the system facilities is discharged into the Tamsui River and the Taiwan Strait, the focus of this study is whether the artific...
來源: NDLTD
關鍵字: 水下
System ID: 412272
191680
博碩士論文
I-Chang Huang, 黃奕璋
碩士 / 國立中山大學 / 資訊工程學系研究所 / 106 / The impurity in the water affects the clarity of underwater images, leading to great limitations on the application of underwater images in visual analysis and research. In addition to the fact that impurities cause image blurring, different refraction and scattering results are produced depending on the wavelength of the light, when light is transmitted in water,. The color contrast caused by the low contrast of the image and the partial color decay has similar r...
來源: NDLTD
關鍵字: 水下
System ID: 412271
191681
博碩士論文
Feng-Shan Shih, 時鳳山
碩士 / 國立臺北科技大學 / 環境規劃與管理研究所 / 95 / This research is to understand the final processing method of dehydrated sludge processing at the three waste water treatment plants in Taipei including Tihua Waste Water Treatment Plant, Neihu Waste Water Treatment Plant and Pali Waste Water Treatment Plant. Processing methods of dehydrated sludge processing include composting, incineration and melting. First the composting method shall be discussed: for composting of sludge, attention has to be paid to the wat...
來源: NDLTD
關鍵字: 水下
System ID: 412270
191682
博碩士論文
Kang-Liang Chen, 陳岡亮
碩士 / 國立臺北科技大學 / 土木與防災研究所 / 94 / The underground pipeline authorities in Taiwan are multitudinous. Highly excavating frequency of pipeline renovating and maintaining have caused traffic jam, noise pollution, disaster occurring, public complaining and the questions constantly, etc. Therefore, the government has promoted the “Common Duct” construction and established relative laws. To solve problems of multitudinous unit and pipeline by intensive management to improve urban water environment effect...
來源: NDLTD
關鍵字: 水下
System ID: 412269
191683
博碩士論文
Yun-Ju Chan, 詹雲如
碩士 / 國立臺灣大學 / 工程科學及海洋工程學研究所 / 107 / This study investigates the localization of underwater vehicles via the observability analysis using both inter-vehicle range and range-rate measurements. An instantaneous observability of the dynamic system is defined by taking the Gramian matrix of the Lie derivatives, in which the condition number of the observability Gramian matrix is a metric of the observability. Better observability is obtained when the condition number is reduced (the inverse of the ...
來源: NDLTD
關鍵字: 水下
System ID: 412268
191684
博碩士論文
Chen, Hsin-Zong, 陳馨宗
碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 107 / When the exhaust back pressure of the diesel engine is too high, the gas is not smooth. The high exhaust back pressure and low intake vacuum will affect the exhaust and fresh air intake of the diesel engine cylinder, and the combustion process will worsen the diesel engine heat load. The purpose of this thesis is to analyze the diesel engine's underwater exhaustion, and use the aspirator design to simulate and analyze the effects of underwater exhaust and back pres...
來源: NDLTD
關鍵字: 水下
System ID: 412267
191685
博碩士論文
SHU-FEN TSAI, 蔡淑芬
碩士 / 國立中央大學 / 土木工程研究所 / 94 / The sewage system has become an indispensable public works. Its function has gradually evolved from its traditional goals to having multi-purpose benefits; it not only elevates the feasibility of water recycling, but is also listed by advanced countries as an important indicator of the urban environment. It is an indispensable public works in the modern city, and has the functions of elevating the culture of living and improving the water environmental aesthetic. Sew...
來源: NDLTD
關鍵字: 水下
System ID: 412266
191686
博碩士論文
Chun-Hsu Chen, 陳俊旭
碩士 / 國立臺北科技大學 / 土木與防災研究所 / 100 / In recent years, Taiwan people pay more attention on the importance of environmental protection and aware that the sewer system construction can effectively improve the quality of life. The huge cost of sewer construction is a heavy burden for the government. For this reason, the government promotes private resources joining the public construction in many ways. BOT is one of them. However, the BOT model still cannot avoid the engineering delay in the constructio...
來源: NDLTD
關鍵字: 水下
System ID: 412265
191687
博碩士論文
Liao, Shih-Chun, 廖士竣
碩士 / 國立臺灣海洋大學 / 電機工程學系 / 105 / In this paper, the ultrasonic sensor is fabricated by semiconductor process technology, and the lead zirconate titanate Pb(Zr0.52Ti0.48)O3 was used as the acoustic wave sensing layer. The focus of the research is to install the self-made ultrasonic sensor and 64 array ultrasonic transmitter in the Remotely Operated Vehicle (ROV) for underwater image acquisition, and the ultrasonic sensing device changes the sensing frequency by the structural adjustment of the piez...
來源: NDLTD
關鍵字: 水下
System ID: 412264
191688
博碩士論文
Chang,jen-KUO, 張任國
碩士 / 中華大學 / 營建管理學系 / 105 / It has been a longtime that our country is not very active in promoting sewage sewer system, and relatively falls behind compared with neighboring countries, resulting in serious pollution of our rivers. Although Government now has begun to actively promote household sewage sewer pipeline connecting works, but effectiveness is not significant. Therefore, the author thinks that it is necessary to explore the issues of general public in the face of sewage pipeline connec...
來源: NDLTD
關鍵字: 水下
System ID: 412263
191689
博碩士論文
Rui-Dong Chang, 張瑞東
碩士 / 國立臺灣科技大學 / 機械工程系 / 95 / Small-scale underwater vehicles have been mainly developed for underwater exploration or ecological observation and tracking. As the size goes down to meso-scale, due to the limited space, the vehicles have very limited functions and stay wired powered and controlled. In this research, a remote-controlled maneuverable meso-scale underwater vehicle with vision capability was developed. The vehicle equipped a micro wireless video camera and four rotors— two for propuls...
來源: NDLTD
關鍵字: 水下
System ID: 412262
191690
博碩士論文
Ming-Lung Kuo, 郭明龍
碩士 / 國立東華大學 / 公共行政研究所 / 98 / none
來源: NDLTD
關鍵字: 水下
System ID: 412261
191691
博碩士論文
Nai-ching Chen, 陳乃菁
碩士 / 國立高雄第一科技大學 / 營建工程所 / 97 / Estimating productivity of household connection activities is according to a multiple regression model nowadays. However, there are two shortcomings as follow: (1) The accuracy of linear equation does not perform algorithms as the non-linear one. (2) Using reaching 12 linear equations to estimate productivity of household connection is too complicated. In short, the purpose of this research is to develop one kind of neural network model in order to estimate prod...
來源: NDLTD
關鍵字: 水下
System ID: 412260
191692
博碩士論文
Liu Kuo-Tai, 劉國泰
碩士 / 中國文化大學 / 企業實務管理數位學習碩士在職專班 / 103 / Public sewerage coverage was one criterion for evaluating national competitiveness. Under the budget pressure of government, BOT model is becoming a trend to handle sewer. However, domestic BOT case has lots of controversy, therefore, risk management is getting even more important.In this study, we identify risk categories and risk factors of the project full life cy-cle through questionnaire to the expert who had sewerage BOT project experience. And then w...
來源: NDLTD
關鍵字: 水下
System ID: 412259
191693
博碩士論文
Yu-Ting Lee, 李玉婷
碩士 / 國立臺灣大學 / 政治學研究所 / 102 /
來源: NDLTD
關鍵字: 水下
System ID: 412258
191694
博碩士論文
Jun-Kai Guo, 郭濬愷
碩士 / 國立臺灣大學 / 工程科學及海洋工程學研究所 / 102 / When light is transmitted in water from a subject to an observer, it is scattered and absorbed by the unstable environment such as suspended particles and turbid water. Due to these phenomena, underwater images usually have poor quality including low contrast, blurring, darkness, and color diminishing. In this thesis, we propose a new underwater image restoration algorithm that consists of two major phases: visibility restoration and fidelity restoration. In t...
來源: NDLTD
關鍵字: 水下
System ID: 412257
191695
博碩士論文
Wei-ChengHung, 洪瑋成
碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 102 / This thesis integrates Polynomial and Fourier series with LIDC Energy Mapping Method to design lens that contain uniform and periodic light pattern for a light-emitting diode (LED) fishing lamp. Polynomial and Fourier series were used to represent the light intensity distribution curve (LIDC) of the light pattern. In this study, LIDC Energy Mapping Method and the conservation of energy were successfully used to represent the LIDC of the fish-attracting light pat...
來源: NDLTD
關鍵字: 水下
System ID: 412256
191696
博碩士論文
CHIU CHIH HAO, 邱誌豪
碩士 / 國立臺灣海洋大學 / 河海工程學系 / 102 / The sewage system construction for the metropolis sound development critical public construction, affects a public health quality of country to be really great, therefore the sewage system construction already regarded as the national infrastructure construction by various countries. Lausanne management college (IMD) when the appraisal national competitiveness, takes 「public sewage system popular rate」 as 「health and environment」 one of the targets. At present, may...
來源: NDLTD
關鍵字: 水下
System ID: 412255
191697
博碩士論文
蕭楷桐
碩士 / 國立臺灣海洋大學 / 河海工程學系 / 100 / Sewerage system is an important national public construction project. In order to improve environmental hygiene and quality of life, local governments from all over the country are actively involved in the construction of the sewage. Being a country with high-density population, buildings were constructed within vicinity of each other, the complexity of traffic routes and underground obstacles all contribute to the difficulty of the construction. In order to mi...
來源: NDLTD
關鍵字: 水下
System ID: 412254
191698
博碩士論文
Hsiang-tse Hung, 洪向澤
碩士 / 世新大學 / 資訊管理學研究所(含碩專班) / 99 / Over 70% of our Earth's surface is covered by water, and the Underwater Sensor Networks (UWSN) can collection ocean information, monitor ocean environment. Since the UWSN can only use sound waves to transmit messages, it has the following features as opposed to the wireless sensor network, which uses radio waves to transmit messages: long propagation delay, lower available bandwidth and multi-path problem. The sink node’s broadcasting and collecting data from se...
來源: NDLTD
關鍵字: 水下
System ID: 412253
191699
博碩士論文
Chun-Hsien Lee, 李俊賢
碩士 / 國立臺灣科技大學 / 資訊工程系 / 98 / Underwater synchronization is special issue for sensor networks. The problem is much more challengeable than the conventional synchronization problem on the ground. On the one hand, this is because underwater sensors cannot receive signals from GPS satellites directly. On the other hand, since electromagnetic signals decay extremely fast in water, traditional wireless message exchange using electromagnetic signals is not suitable for underwater environment. This thes...
來源: NDLTD
關鍵字: 水下
System ID: 412252
191700
博碩士論文
Chun-Ting Lin, 林峻霆
碩士 / 華梵大學 / 機電工程學系博碩專班 / 98 / The aimed of this paper is to study the laser melting and cutting technique with the water cooling-assistance for brittle substrates. The laser used was CO2 Laser and the experimental materials were LCD glass substrates. The substrates were submerged 1 mm beneath the water surface. The method can reduce the generation of the defects in the cutting process relative to that of the conventional laser melting cutting in air. The quality of laser cutting for the laser pa...
來源: NDLTD
關鍵字: 水下
System ID: 412251