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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

Identitetsförändring vid internationellt arbetsuppdrag.

Keisu, Jessica January 2012 (has links)
Internationella uppdrag är en utmanande upplevelse för de individer som åker för att arbeta för sitt företag i ett annat land. En utlandsstationering omfattar tre faser i individens karriärcykel - före resan, under vistelsen och slutligen efter hemkomsten. Uppsatsen utgår från en narrativ analys och metod, där intervjuer använts som teknik för insamlande av fyra utlandsstationerades berättelser. Studien inspireras av Kohonen (2005a, 2005b, 2007, 2008) som forskat på ledares identitetsrekonstruktion under utlandsstationering. I sin forskning finner hon stöd för att identiteten för de utlandsstationerade förändras, kulturellt eller professionellt, eller både professionellt och kulturellt men det finns individer vars identitet inte förändrats. Syftet med studien är att öka vår förståelse för utlandsstationerade individers identitetskonstruktion. Resultatet visar att identiteten, sett som en process, förändras för intervjupersonerna under utlandsstationeringens tre faser. Förändringen återfinns i en kulturell identitetstyp och i en professionell identitetstyp, förändringen återfinns även i en identitetstyp som är både professionell och kulturell på samma gång. Detta innebär att både den sociala omgivningen och professionella (personlig förändring) påverkar individen lika mycket. Intervjuperso­nernas berättelser visar att en utlandsstationering innebär både självreflektion och identitetsarbete.
112

Designing Allocation Mechanisms for Carrier Alliances

Houghtalen, Lori Marie 05 July 2007 (has links)
The goal of the first part of this thesis is to obtain a high-level theoretical understanding of how an alliance can be managed such that its resources are used in an optimal manner. We propose a pricing mechanism to manage the interactions of carriers, through the allocation of alliance resources and profits, in a manner that encourages individual carriers to make decisions that are optimal for the alliance. Our methodology is based on modeling carrier behavior as linear programs, which are incorporated into a mechanism that manages carrier interactions by appropriately setting resource prices. After introducing two distinct behavioral models, the performance of the mechanism using each model is analyzed for its ability to ensure alliance optimal behavior is attained. We find that the behavioral model selected can significantly impact the characteristics of allocations obtained using the mechanism. In the second part of the thesis, we seek to establish practical insights regarding how the characteristics of potential partners impact the benefit that can be gained by collaborating with these partners. Computational experiments are conducted to evaluate the impact of network size, fleet capacity, demand distribution, and network compatibility on the benefit associated with collaborating. A comprehensive study for simulated two and three-carrier alliances establishes general insights regarding the compatibility of carriers with varying network sizes and fleet capacities. The impact of increasing hub-to-hub connectivity between partnering carriers is then investigated, followed by a study of the effect of market overlap on alliance success. Finally, a real-world cargo alliance is analyzed. In the third and final part of this thesis, we develop new approaches for determining and inducing fair profit allocations in alliances, providing alternatives to traditional approaches which equate minimum acceptance requirements and satisfaction. The mechanism established in the first part of the thesis is adapted to more precisely control the profit allocations obtained, in particular so that an allocation as close to some predetermined fair" allocation is obtained. Several measures of fairness are proposed and implemented, and their performance analyzed for each of the behavioral models discussed in the first part of the thesis.
113

Reception of QPSK Signal Using Digital Coherent Receiver

Chen, Shr-Jie 11 July 2011 (has links)
The coherent system has been extensively studied in recent years. The reasons are that receiver sensitivity is better than Intensity Modulation with Direct Detection (IM/DD) and the spectral efficiency of wavelength division multiplexing (WDM) is increased. The modulation formats of the coherent system are Amplitude shift keying (ASK), Phase shift keying (PSK), and Frequency shift keying (FSK). The detection techniques are Homodyne detection and Heterodyne detection, both of them need a laser light source in the receiver called as the Local oscillator (LO). In the previous study, the Quadrature phase shift keying (QPSK) modulation format with Pseudo Random Binary Sequence (PRBS) 27-1 to transmit 51km was investigated, and the pilot carrier method realized the Homodyne Detection. The merit of the pilot carrier is that the LO is not necessary in the receiver. In this master thesis, the optical signal of the QPSK modulation format with PRBS 215-1 is transmitted over 500km using the pilot carrier method. A WDM system demonstration is also conducted to increase the system capacity. The Bit error rate (BER) is calculated by the MATLAB program. The BER performance of 20G bit/s, 500 km transmission system using the QPSK with single channel and multiplexed channels were measured.
114

After the Cold-War the development of PLAN and its strategy in Indian Ocean

Wang, Chia-Li 02 August 2011 (has links)
With the economic reform and liberalization that accompany the increasing demand in energy, China has surpassed Japan, becoming the second largest energy consuming nation all over the world. Energy from the Middle East and Africa should be delivered through the ocean route from Indian Ocean to the Strait of Malacca. China imported 203.8 million tons of oil in 2009, for an increase of 14.8%, having surpassed Japan and leaving the United States as the second largest oil consuming nation. For oil delivery and energy supply safety, China has much room for improvement in the capability of safeguarding long-distance delivery; a sophisticated cross-ocean navy has not yet been established. On one hand, China has built strongholds along the oil delivery route connecting the Middle East to China, which is the so-called ¡§string of pearls¡¨ strategy. The nations with diplomatic relations with China along the route, including Pakistan, Sri Lanka, Bangladesh, Myanmar, and Cambodia have cooperated with China to give it the right to build ports or to use their important ports to improve oil delivery safety. Developing a command of the sea has remained the ambition of China¡¦s navy in recent years. The substantial measures to gain control of the seas require a naval fleet equipped with long-term offshore combat capability. If conflicts occur in the South China Sea and Indian Ocean, China¡¦s surface vessels probably can not handle them since they lack air superiority. Therefore, China proactively builds its cross-ocean naval fleet, including ushering in large surface vessels and submarines imported from Russia, or self-developed. China has also recently stated that the development of a functional aircraft carrier is part of the future direction for its cross-ocean naval force.
115

Investigation on electrical analysis and hot carrier effect of 65nm MOSFETs under External Mechanical Stress

Ho, Wei-Te 24 July 2006 (has links)
Semiconductor technology has already got into nanometer scale. As the dimension keeping scaling down, we can get more transistor in the same area, and furthermore the frequency and performance are also enhanced. But nowadays the development of the lithography technology has come to the neck; we must find another way to improve the performance of transistor. In this study, we fully discuss the electrical characteristics and the hot carrier effect as the channel of the N-MOSFETs being strained. In order to strain the channel, silicon substrate is bent by applying external mechanical stress, the lattice of channel will be strained after applying uniaxial tensile stress. Therefore, we successfully improve drain current and carrier mobility of NMOS, and the increasing rates are 22% and 30% respectively. In addition, we can understand the influence of hot carrier effect on strain silicon by bending silicon substrate with external mechanical stress. With the increase of curvature, substrate current goes up. We offer an explanation to verify this result.
116

none

Sang, Chih-chiang 28 June 2007 (has links)
Space vehicle is a kind of tool and weapon for transporting materials and personnel, conveying energy and execution work in space. The war of 21st century is a Hi-Tech war to fight for the power over space control and information transmission. Space power means the control of information transmission, and therefore the victory of this war and quality of space vehicle is the key factor in determining Whether one has the power space in. China was developed space vehicle technology since 1956 After great efforts for half a century, it has already established certain foundation. China like U.S.A and Russia, has invested huge funds and manpower in developing space science and technology. China hopes to improve military strength, drive the development of relevant industries and economy, and increase national competitiveness and overall strength through the development in space vehicle science and technology, and further conquer this expects to new high land of space. This paper aims at studying the development, capabilities, restrictions, and breakthroughs the space vehicle technology of China in terms of China¡¦s position on the control over space and its strategic intention in developing space vehicles. This paper reveals the direction of space vehicle development in China and suggests measures for maintaining Taiwan security. It will help to provide a relevant background for the future study of space vehicle development in China.
117

Electrical Analysis of Hot Carrier Effect at Various Temperature of 65nm MOSFETs under External Mechanical Stress

Kuo, Chun-ting 24 July 2007 (has links)
Semiconductor technology has already got into nanometer scale. As the dimension keeping scaling down, we can get more transistor in the same area, and furthermore the frequency and performance are also enhanced. But nowadays the development of the lithography technology has come to the neck, we must find another way to improve the performance of transistor. The reliability is more important in the shorter and shorter device channel. In this study, we fully discuss the electrical characteristics of the hot carrier effect at various temperature of 65nm MOSFETs under external mechanical stress. In order to strain the channel, silicon substrate is bent by applying external mechanical stress, the lattice of channel will be strained after applying uniaxial tensile stress. Therefore, we successfully improve drain current and carrier mobility of NMOS, but the hot carrier effect is more serious. In addition, we can understand the influence of hot carrier effect on strain silicon by bending silicon substrate with external mechanical stress. With the increase of curvature, substrate current goes up. We offer an explanation to verify this result. The temperature effect is also measured. The drain current and mobility increased with the temperature decreasing, but the substrate current increased with temperature increasing.
118

VIBRATION EXPOSURE AND SYMPTOMS IN POSTAL CARRIERS USING MOTORBIKES

TOMINAGA, YOSHIO 05 1900 (has links)
No description available.
119

The Low-Field Hall Measurement of Magnetic Films

Wu, Mei-Fang 27 June 2000 (has links)
The low-field magnetoresistance of colossal magnetic thin film can be enhanced by proton implantation. Compare with the as grown sample, the implantation samples has lower transition temperature and higher resistivity. By the hall measurement, we can get the carrier type and carrier concentration. The hall magnetoresistance (MRH) is much greater than the longitude magnetoresistance (MR). Chapter 1. Introduce experiment purpose and expected results. Chapter 2. Introduce the basic theorem of colossal magnetic materials. Chapter 3. The steps of experiment. Chapter 4. Results and discussion. Chapter 5. The conclusion.
120

A Fiber Optic Microampere Current Sensor With PGC Demodulation

Chou, Ming-Chieh 13 August 2001 (has links)
The fiber-optic microampere current sensor used two metal-coated single mode optical fibers to detect the current when it pass through the coated part which existing a thermal resistance effect.When the optical fiber experience temperature change,variation of the phase shift would be incurred by the change of refractive index and geometric structure of the fiber.Then we can observe the phase amplitude to know the input current.Besides we combine the all-fiber Michelson interferometer with the Faraday rotator mirror to build up a polarization-insensitive structure.Final using the phase-generated carrier technique(PGC) to stabilize demodulate the phase signal.

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