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.
An on-chip DC-DC converter for energy harvesting is proposed for a new battery-less solar cell tag applied to the Internet of Things (IoTs) devices. The main purpose of this design is to maximize the transfer efficiency and to stably provide a high enough supply voltage to the back-end loads. The overall circuit consists of a crosscoupled charge pump, a maximum power point tracking (MPPT) circuit,...
As the progress of the process technology, the clock mesh design has been widely used in high-performance circuit to reduce the clock skew. Since the uniform mesh design cannot avoid hot spots, the non-uniform mesh design is more useful for avoiding the timing variation caused by high temperatures. In this paper, we propose an integer linear programming (ILP) approach to reduce the wire length of...
Localization of a viewer's region of interest (ROI) on eye gaze signal trajectories acquired by eye trackers is a widely used approach in scene analysis, image compression, and quality of experience assessment. In this paper, we propose a novel clustering approach for ROI estimation from potentially noisy raw eye gaze data, based on signal processing on graphs. The clustering approach adapts graph...
In this work, we demonstrate a way to modulate threshold voltage of InGaAs Fin-structured High-electron-mobility transistors (Fin-HEMTs) by narrowing fin width of the devices. Normally-off InGaAs FinHEMT has been successfully achieved when fin width of devices is smaller than around 180 nm. Also, we introduce a theory to explain side wall gates control of FinHEMTs to modulate threshold voltage.
With the continuous development of information construction, the application of digital campus system is increasing, the network scale expanding gradually, access control, and information security problem increasingly prominent. The original decentralized independent certification, the independent authorization, the independent account management model has been unable to meet the current and future...
The authors present a straightforward and effective approach for minimizing insertion loss (IL) of varactor-based frequency-agile microstrip passive circuits, where varactors are employed as elements of variable reversal capacitances to attain reconfigurabiltiy/tunability on circuit characteristics. Technically, the proposed approach mimics the required capacitances using the varactors together with...
Thermally conductive adhesives (TCAs) have been widely used in electronic packaging industry, such as for chip packages in smart phones and high-power LED lightings, as they combine the workability of polymer resins with the high thermal conductivity of fillers[1−4]. The polymer resins endow adequate adhesion strength and provide sufficient mechanical robustness. The thermally conductive fillers mainly...
With the rapid development of portable electronics, such as e-paper and other flexible devices, power sources with a high flexibility become an important prerequisite. In this run, supercapacitors with a small form factor are recently emerging as a competitive candidate. Here, we introduce an all-printed paper based supercapacitor (PPS) assembled by screen printing and stencil printing technology,...
With the rapid development of the electronic industry, it is critical for electronic packaging industry to develop superior materials with high thermal conductivity and lower cost, so as to dissipate heat from the central components. Metallic materials are compelling in thermal conductivity application over decades. However, it is still a great challenge to synthetize metal nanomaterials which have...
Electrically conductive adhesives (ECAs) are an important interconnecting material to electronic packaging industry due to the low processing temperature, fine pitch capability, simple process and mechanical flexibility compared with conventional solder and wiring technologies. Silver micro/nanoparticles are widely used as conductive filler owing to their low electrical resistivity, chemical stability...
In the interventional surgery, the catheter guide wire advancing and position accuracy is very important for the success rate and safety of the operation. In our newly developed vascular intervention surgery robot system, the slide unit of catheter and guide wire which provide the movement has a very big improvement space. In this paper, we proposed a gripper for holding a guide wire of a catheter...
Remote-controlled vascular interventional surgery robots (RVIR) are being developed to reduce the occupational risk of the intervening physician, such as radiation, chronic neck and back pain, and increase accuracy and stability of surgery operation. Moreover, some successful RVIR are used to operate catheter or guidewire accurately. However, catheter and guidewire are operated respectively by intervening...
The interventional surgery is a type of minimally invasive operation which can reduce hospitalization time and greatly decrease patient morbidity compared to traditional methods. In previous work, the interventional operation robot was developed to send catheter or guidewire. The master side was a Phantom device and the PID control was used through upper machine. To further improve the precision and...
Considering the problem of blind source separation without known number of sources for complicated mechanical system, this paper proposes a novel blind source separation (BSS) algorithm based on parallel factor analysis (PARAFAC). In the proposed method, the centralized sensor data are firstly divided into non-overlapping range blocks of fixed size, and single time-delay covariance matrices of each...
Lower time-frequency resolution is caused by Smoothed pseudo Wigner-Ville distribution (SPWVD) in suppressing cross-terms interference, which limits its application in the processing of the non-stationary vibration signals. This paper proposes a novel fractional-order smoothed pseudo Wigner-Ville distribution (FrSPWVD) to solve the above problem. The details about step of the calculation are as follows:...
Aiming at the improvement of autonomy, adaptability and robustness of the reentry guidance technology, a new predictor-corrector reentry guidance law based on online model identification is proposed under the background of the new generation of reusable aircraft. On the basis of equilibrium glide condition, a feasible control envelope is established to satisfy the reentry constraints. The corresponding...
In order to improve the technical level of the grid state operation, the ant colony algorithm based on dynamic updating is proposed for the massive signal analysis in grid state system with the complexity of the structure and the high reliability. Though data mining and updating in dynamic correlation rules of device monitoring signals with evolutionary genetic algorithm, the correlation analysis...
With growing ageing population, acquiring joint measurements with sufficient accuracy for reliable gait assessment is essential. Additionally, the quality of gait analysis relies heavily on accurate feature selection and classification. Sensor-driven and one-camera optical motion capture systems are becoming increasingly popular in the scientific literature due to their portability and cost-efficacy...
This paper presents the design and implementation of a hardwired OS kernel circuitry inside a Java application processor to provide the system services that are traditionally implemented in software. The hardwired system functions in the proposed SoC include the thread manager, the memory manager, and the I/O subsystem interface. There are many advantages in making the OS kernel a hardware component,...
Perceptual image of a product plays a significant role in decision making when users choose a product whose basic function is homogeneous nowadays. Designers try to design products that meet the all kinds of demands of users. However, a big gap between designers and users exists owning to the subjectivity of designers' experience. An objective model to recognize perceptual image of products is proposed...
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.