The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we argue that a broad range of Internet-scale distributed applications can benefit from an underlying low-cost consistency detection framework that is an alternative to inconsistency avoidance and can detect inconsistency among nodes sharing data or services in a timely manner. This paper first presents an overview of the inconsistency detection framework. Then, it discusses the detailed...
Zinc oxide (ZnO) and its ternary alloy magnesium zinc oxide (Mg xZn1-xO) are piezoelectric materials for high quality factor bulk acoustic wave (BAW) resonators operating at GHz frequencies. MgxZn1-xO thin film BAW devices built on Si substrates are particularly attractive for integrating piezoelectric MgxZn1-xO with the main stream semiconductor devices and circuits. In this paper, we report single-mode...
The surface Laplacian can give more localized information of the brain. A concentric bipolar electrode (consisting of a central disc and an outer annulus) can measure the surface Laplacian of the body surface electrical potential distribution. In this article we will study the feasibility of the Laplacian electrode for EEG from the problems of SNR, selection of the electrode parameter. And a new kind...
The influence of dimension parameters on the performance of body-surface Laplacian electrodes is studied in this paper. Some rules about the parameter optimization design are presented. The investigation suggests that the effective radius b should be equal to the inner radius of the ring electrode in order to reduce the relative error. Besides, in the presence of weak bioelectrical signals, reasonably...
The surface Laplacian involves the second derivative of the potential. It will give different and perhaps more localized information concerning the sources that give rise to the surface potential distribution. In this article we study the SNR of the surface Laplacian, and figure out the measuring possibility of the surface Laplacian of some bioelectrical signals that never been mentioned by others
An integrated laboratory course of physiological sciences has been put into use at Zhejiang University School of Medicine since 1993. This course guides students in taking a scientific approach to understanding the contemporary issues in physiology, pathophysioiogy and pharmacology. Students learn to use a variety of basic experimental methods to laboratory work. More importantly, research-oriented...
The DC power converters have reactive components for steady state and transient energy storage. The energy stored in similar to the reactive components in AC system which uses a power factor defines how the energy is handled. A DC energy factor is introduced in this paper that is particular to address this issue. The set of formulation is developed to get understanding the DC energy storage and the...
This paper examines the H-bridge converter using passivity based control. The nonlinearity of resonant type H-bridge converter is poor and therefore the dynamic performance of the converter is weak. Using simple PI control, the transient response is not satisfactory. The passivity based control is first derived for the H-bridge converter. The parameter estimation is examined and the comparison with...
We report the first successful integration of magnetostrictive Metglas (Fe/sub 78/Si/sub 9/B/sub 13/) thin film sensor with a readout circuit using standard integrated circuit (IC) process and surface micromachining. The Metglas thin film is on a nitride cantilever beam. Its magnetic domains are subject to rotation in a magnetic field. This induces a strain and hence, beam deflection which is measured...
A statistical analysis using subspace perturbation expansion is applied to the direction of arrival (DOA) estimation bias for MUSIC, Min-Norm, ESPRIT, State-Space Realization (TAM), and Matrix-Pencil algorithms, assuming that only a finite amount of array data is available. The authors obtain an unified analytical expression of the DOA estimation bias for those algorithms in a simple and self-contained...
Influence of the thigh muscles' contraction on the joint stability and the cruciate ligaments' stresses was quantitatively determined. A highly accurate computerized radiographie technigue was used in the experiment. A two-dimensional mathematical model analysis was performed as well.
Recent events at EPA and growing problems throughout the United States with waste disposal sites have had a negative effect on the public's perception of waste disposal and are resulting in growing Congressional pressure to upgrade regulations in the waste area and provide more protection for victims of hazardous waste problems. Members of both the House of Representatives and the Senate have indicated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.