Sökning: "X Yan"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden X Yan.
1. Towards single Ce ion detection in a bulk crystal for the development of a single-ion qubit readout scheme
Sammanfattning : The work presented in this thesis was concerned with investigating the relevant spectroscopic properties of Ce ions randomly doped in an Y2SiO5 crystal at low temperatures (around 4 K), in order to develop a technique and an experimental set-up to detect the fluorescence photons emitted by a single Ce ion. The aim of the work was to determine whether a single Ce ion (referred to as the readout ion) can be used as a local probe to sense the quantum state of a neighbouring single-ion qubit via a state-selective interaction between the readout and qubit ion. LÄS MER
2. Chinese foreign investment law : legal reform in times of transition from : nationally closed towards internationally open system, planned economy towards market economy, li to fa
Sammanfattning : .... LÄS MER
3. Major leaching processes of combustion residues : characterisation, modelling and experimental investigation
Sammanfattning : Characterising leaching behaviour provides ample evidence toidentify the majorleaching processes of combustion residues.Neutralisation and chemical weatheringgovern the leachingreactions and control the release of major, minor and traceelementsfrom combustion residues, and are thus considered to bethe major leaching processes. LÄS MER
4. Segmenting and Tagging Text with Neural Networks
Sammanfattning : Segmentation and tagging of text are important preprocessing steps for higher-level natural language processing tasks. In this thesis, we apply a sequence labelling framework based on neural networks to various segmentation and tagging tasks, including sentence segmentation, word segmentation, morpheme segmentation, joint word segmentation and part-of-speech tagging, and named entity transliteration. LÄS MER
5. Optimization, Design, and Analysis of Flexible-Grid Optical Networks with Physical-Layer Constraints
Sammanfattning : The theme of this thesis is the optimization, design, and analysis of flexible-grid optical networks that are constrained by physical-layer impairments (PLIs). We consider three flexible-grid network scenarios. LÄS MER