Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Auction based participant selection has been widely used for mobile crowd sensing (MCS) to achieve user incentive and assignment optimization. However, mobile crowd sensing problems solved with auction-based approaches usually involve participants' privacy concerns because a participant's bids may contain her private information (such as location visiting patterns), and disclosure participants' bids...
The issue of image completion is well developed in these years. Most of them reconstruct damaged area by referring to the under-repaired images themselves. However, they may fail if damaged portion collapse their structure which is unique and important. We propose to use an external reference image to repair the damaged image and the method provides the following three contributions: (1) an algorithm...
Action recognition has received increasing attention from the computer vision and machine learning communities in the last decade. To enable the study of this problem, there exist a vast number of action datasets, which are recorded under controlled laboratory settings, real-world surveillance environments, or crawled from the Internet. Apart from the "in-the-wild" datasets, the training...
In brushless dc motor (BLDCM) precise commutation point and commutation interval, which impact motor torque ripple and motor efficiency are significant issue. Especially for high-speed high-power BLDCM drive without rotor position sensors (i.e. sensorless drive), the impact of commutation electrical angle error becomes more important. However commutation error is inevitable due to interference, detection...
Nowadays, a large scale of renewable energy has been connecting to power system and the real time simulation platform is widely used to carry out research on integration control algorithm, power system stability etc. Compared to traditional pure digital simulation and hardware in the loop simulation, power in the loop simulation has higher accuracy and degree of reliability. In this paper, a power...
The transmission factor from a capsule dipole antenna located in a digestive system of human body to the outside are investigated using the FDTD analysis. It is found that the peak values of the transmission factor are observed in a frequency range of 400–600 MHz for different organs of digestive system. High received power was obtained when a transmitting antenna and a receiving antenna have the...
The transmission factor from a 20 mm dipole antenna immersed in the human body equivalent liquid (HBEL) and the deionized water to the outside are investigated using the FDTD analysis and the measurement. Both calculated and measured transmission factor using the mixed-mode S-parameter method are shown good agreement. It is observed that the transmission factor increases as the frequency decreases...
We apply a novel computational method to systematically design Dirac cones in photonic crystals. In particular, we demonstrate an unprecedented Dirac-cone zero-index metamaterial (DC-ZIM) that exhibits zero-index for any polarization of light.
We present an on-chip Dirac-cone metamaterial with an impedance-matched zero refractive index at λ = 1550nm. The design is a square array of air holes in 220-nm silicon-on-insulator (SOI) which offers compatibility with complementary metal-oxide-semiconductor (CMOS) technology.
Zero-index metamaterials exhibit inherent losses due to poor confinement. We present a 2D photonic crystal that achieves isotropic impedance-matched zero-index propagation, but suffers no material or radiation loss due to a bound-state in the continuum.
Using nonlinear scattering theory, we simulate nonlinear signal generation in 2-dimensional zero-index metamaterials based on a photonic Dirac cone at the Γ point. We observe unique phase-matching in multiple simultaneous directions as the index approaches zero.
We identify experimentally the efficiency of the free-space coupling through measuring the threshold of stimulated Raman scattering in a slightly deformed microtoroid cavity, and the measured efficiency is up to 30%.
Swarm intelligence is defined as the properties of artificial systems. It is suited to depict people's daily behavior, such as social media users' behavior. Social media users have some characteristics. For one thing, users who have the same interest will focus on the same VIP (Very Important Person) users inside the industry. For another, the users concentrating on the same VIP user may focus on...
In this paper, the hub motor driven pure electric vehicle as a prototype, side-slip angle and angular velocity as a controlled variable to design a path tracking controller based on adaptive terminal sliding mode. Through the simulation it can be the design of the adaptive control method based on terminal sliding mode can ensure the vehicle driver's action in 1s after completion of rapid response...
In this paper, the vehicle two-degree of freedom suspension model is taken as the system dynamics model to study the semi-active air suspension system. The sky-hook suspension system is selected as the reference model. Based on the error equation of the body motion, a sliding mode controller is designed by using isokinetic approach law. The traditional sliding mode control uses the switching function...
Aggregate statistics are becoming increasingly commonplace for mobile sensing applications which crowdsources data from individual users. In order to relieve user's concerns for privacy leakage, privacy preserving mechanisms have to be applied to enable the aggregator to compute aggregate statistics without learning each individual data. Although the aggregator will not know the value of the data,...
This paper presents a framework for privacy-preserving video delivery system to fulfill users' privacy demands. The proposed framework leverages the inference channels in sensitive behavior prediction and object tracking in a video surveillance system for the sequence privacy protection. For such a goal, we need to capture different pieces of evidence which are used to infer the identity. The temporal,...
Previous studies have demonstrated that the brain functional connectivity undergoes striking temporal dynamics. Modeling dynamically the brain functional connectivity has become not only an urgent and important work, but also a new direction for exploring brain functional research. For this motivation, a novel method for exploring functional brain dynamics based on Fisher linear discriminant (FLD)...
The rapid information propagation facilitates our work and life without precedent in history, but it has tremendously exaggerated the risk and consequences of privacy invasion. Today's attackers are becoming more and more powerful in gathering personal information from many sources and mining these data to further uncover users' privacy. A great number of previous works have shown that, with adequate...
Traditional game AI is aimed at the standard players in the beginning of the construction. After designing the AI, The whole game decision-making system will not be dynamically adjusted, Because of the strong regularity, the traditional game AI is easy to be found the weakness by users, which is not easy to maintain the rationality of the decision. This paper presents a design scheme of game AI based...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.