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Dual-comb spectroscopy is demonstrated using microresonator soliton frequency combs by measuring the absorption spectrum of H13CN in the near-infrared. The results show the potential for a chip-based, high-precision spectroscopic system.
Dispersive-wave scattering from dissipative Kerr solitons is induced by spatial-mode interactions within a high-Q micro-resonator. A limiting case, single-mode dispersive waves, are observed and their interaction with the soliton causes hysteretic behavior.
A soliton is reported that regenerates by optimizing its Raman interaction with another soliton within a shared optical potential well. The soliton is observed in a high-Q silica optical microcavity.
Ship capsize is one of the hottest spots in the public security due to their sudden and severe consequences, such as Eastern Star and Sewol accidents happened in the past few years. To improve the ability of emergency handling, e.g. Search and Rescue (SAR) operations in inland waters to waterborne transport accidents, an SAR evaluation model for inland ships is proposed based on the Bayesian network...
A high-accuracy cascade sigma-delta A/D-converter is presented. This A/D-converter consists of a 4th-order sigma-delta modulator with 2–2 cascade topology(two stages, both are 2nd-order modulators), a 5th order digital decimation filter, the bias circuit and the clock circuit. The 4th-order sigma-delta modulator is designed using a novel transfer function, that enables the modulator to process the...
Temporal cavity solitons with a detectable repetition rate are generated in a high-Q silica microresonator. A technique for long-term stabilization of the soliton train is demonstrated and used to measure soliton properties for comparison with theory.
Recently, the exploitation of cloud resources for augmenting mobile devices leads to the emergence of a new research area called Mobile Cloud Computing (MCC). In this work, we present a survey and taxonomy for MCC architecture, characteristics, and open research issues aim to explore deep research in this area. We present a taxonomy based on the key issues while highlighting the specific concerns...
We propose a random search algorithm for solving simulation optimization problems with continuous decision variables. The algorithm combines ideas from promising area search, shrinking ball methods, and surrogate model optimization. We discuss the local convergence property of the algorithm and provide numerical examples to illustrate its performance.
A piezoelectric semiconducting ZnO nanowire under the action of a torque is analyzed. The shear stresses in the cross-section are acquired from classical elasticity. Based on the obtained results, the electric potential, the electric field and the electric displacements can be found from the Gauss law in electrostatics together with the conservation of charge. Numerical results show that the torque...
Clustering by fast search and find of Density Peaks termed DenPeak is the latest and the most popular development of unsupervised clustering that combines both density and distance. However, it suffers from significantly inaccurate performance when there is large diversity of density in different clusters in completely unsupervised. Despite a highly improved performance in semi-supervised clustering,...
In this paper, shooting and bouncing ray — physical optics / physical theory of diffraction (SBR-PO/PTD) hybrid method is studied to investigate the backward scattering from three-dimensional (3D) electrically large target. Shadowing effects, multiple bounce, and diffraction by edges are considered in this scattering model. Time-consuming is greatly reduces compared with the numerical methods such...
Responsiveness is increasingly important for web servers to seamlessly interact with end-users and enhance user experience. In this paper, we studied how different server architectures -- asynchronous and thread-based -- impact the responsiveness of web servers under high concurrency workload. Through extensive measurements of a standard web server benchmark (Apache Bench), we show that the web servers...
Hierarchical clustering has received a great amount of attention due to the capability of capturing hierarchical cluster structure in an unsupervised way. Despite great success, most of the existing hierarchical clustering algorithms have some drawbacks: (1) difficulty in selecting clusters to merge or split, (2) inefficient and inaccurate cluster validation, (3) limitation to only linearly separable...
The shooting and bouncing ray (SBR) method is highly effective for solving the electromagnetic scattering problems. This paper introduces the octree based SBR-PO method, due to the fact that traditional SBR method is not fast enough for scattering prediction for electrically large target. Using the octree structure to rebuild the target model and process ray tracing based on this technique can obtain...
Attributed graphs are becoming important tools for modeling information networks, such as the Web and various social networks (e.g. Facebook, LinkedIn, Twitter). However, it is computationally challenging to manage and analyze attributed graphs to support effective decision making. In this paper, we propose, Pagrol, a parallel graph OLAP (Online Analytical Processing) system over attributed graphs...
We consider the problem of allocating a given simulation budget among a set of design alternatives in order to maximize the probability of correct selection. Prior work has focused on deriving static rules that predetermine the number of simulation replications to be allocated to each design. In contrast, we formulate the problem as a Markov decision process (MDP) and propose a dynamic myopic scheme...
A hybrid differential game law DGL/H based on IMM algorithm is proposed for endgame randomly maneuvering target interception to solve the robustness of traditional single guidance law and the target state estimation delayed high sensitivity. IMM/DGL/H law takes the performance advantage of three differential game laws, DGL/C, DGL/1 and DGL/0 law, into account, employs the change of model probability...
We report experimentally the chaos-assisted excitation of high-Q whispering-gallery modes in a deformed microcavity by a sub-wavelength fiber taper. This chaos-mediated coupling combines the advantages of fiber taper and free-space coupling.
Objective: We combine the reviews about methods of making obsessive-compulsive disorder animal models in recent years, with practical needs of basic researches together, to effect evaluation as to these kind of models, and eventually, to improve basic researches. Method: Literature searches are applied to obtain our Objective. Result: At present the animal models of obsessive-compulsive disorder can...
Influenced by global financial crisis and expanding enrolment of higher education, college students face serious employment and re-employment situation. College students must own core competence if they want to get success in employment competition. The professional training model adapting to market needs is to develop comprehensive professionals with advantages in creation, which can be achieved...
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