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.
A series of experiments were conducted to investigate the effect of ventilation on supercavity around a supercavitating vehicle during water-entry. An elaborate facility equipped with a complete set of measurement and control system was built, and the supercavitating vehicle was typically set to be launched at 20 degrees angle with a speed of 70 m / s. Firstly, the experiment was carried out to investigate...
In this paper, the natural supercavitys are studied both experimentally and numerically. A series of supercavitating vehicle water-entry test are carried out at different speeds, where it is found that the minimum pressure in the cavity gradually reduced with the increase of water-entry speed. The cause for the evolution progress of natural supercavitation is difficult to get from the experiment,...
To effectively promote the development of national science and technology research, and evaluate the impact that emerging technologies on society culture and people's livelihood by taking into account the economic and social factors, this study has conducted feasibility analysis on evaluation of impact of science and technology on Taiwan. It establishes the parameters for such evaluation including:...
Optical recording of calcium transients during spontaneous neuronal activities was first demonstrated via “neuron lasers” with a significantly improved sensitivity. This work provides a novel approach for monitoring neuronal network dynamics and on-chip neurophotonic applications.
The first demonstration of multiplexed lasing in human cancerous tissues with subcellular resolution was achieved by using antibodies and nucleic acid probes. Our work represents a critical milestone to implement optofluidic lasers in clinical applications for cancer diagnosis and prognosis.
Recently, mobile cloud computing (MCC) is drawing substantial attention due to potential reduction on local energy consumption and local execution time. To further satisfy the requirement of latency-intensive applications in the future, fog computing is proposed to take full advantages of close-by nodes with available resources, thus decreasing the transmission time during computation offloading....
In a wireless power transfer (WPT) system via magnetic resonant coupling, the detuning will greatly reduce the transmission power and efficiency. In this paper, a nonlinear tuning model and feedback controllers of the system considering the continuous dynamic tuning are developed to eliminate the disturbance from the detuning. The phase difference between the primary and secondary side is employed...
In recent years, many telecom operators suffered a profits recession because of the rise of over-the-top (OTT) services, especially text messaging and voice calls. To avoid becoming dumb pipes, telecom operators have to launch diverse digital services to transform their networks from dumb pipes to smart ones. Introducing Software-Defined Networking (SDN) into telecom networks may boost the network...
A novel complex of ZnO nanocrystallite aggregates with superior light-scattering capability was synthesized via an eco-friendly aqueous solution method and investigated as a photoanode material for dye-sensitized solar cells (DSSCs). The nanocrystallite aggregate complex was produced by adding a suitable amount of glutamic acid into the reaction mixture as a shape modulating agent. In the absence...
Recently, several studies are focused on mining opinion leader in social network because of its widespread applications. By identifying the opinion leaders, companies or governments can manipulate the selling or guiding public opinion, respectively. However, in real-life applications, social network are usually evolved with time; few prior research efforts have been elaborated on finding opinion leaders...
To improve indoor coverage and network capacity, deploying low-power and small-coverage femtocells in the coverage of a macrocell as a two-tier heterogeneous network is regarded as the most promising approach. Since femtocells share the same licensed spectrum with a macrocell, severe cross-tier and intra-tier interference from concurrent transmissions is introduced, which causes performance degradation...
Since home appliances have computational capabilities and network connectivity, most of these devices support wireless remote control. Unfortunately, these devices usually require separate remote controls with incompatible communication protocols, which raises the issues of management, maintenance, and pollution due to greater waste when such remotes are disposed of. This paper proposes an open NFC...
Terahertz imaging sensing provides numerous attractive applications in different areas, for example, biology and medicine. CMOS technology benefits an imaging system in low cost and a small form factor. The technology advance is technically viable for circuit design in such high frequencies. Lossy silicon substrate, however, still degrades system performance. We will discuss the techniques of performance...
In this paper, we describe an e-Learning system that can help novices to learn how to develop some workable programs in a short period of time, assess their performance, and automatically grade the students' programs. The system takes advantage of computer and network technologies and combines the concept of flipped classroom to help the instructor and students in their teaching and learning activities...
A planetary gearbox (PG) has many advantages and thus it is widely used in industry. It is reported that poor operating conditions and complex loading can lead to the impact on the PG, even the failure of the whole transmission system. Therefore, the dynamics and vibration characteristics of the PG has increasingly attracted attentions for the aim of designing a highly reliable and low-vibration planetary...
The software defined optical network (SDON) service plays an important role in the production and operation of the network system. It's important to solve the problem of how to reduce the risk and distribute the service path more rationally. However, most of the existing algorithms do not take into account service importance. In this paper, a risk balancing routing assignment mechanism based service...
The interpolation techniques for super resolution displays and their applications become more and more important since the video programs now are most with high definition. The linear-based interpolation algorithms bring out the jaggy noise noticeably. Recently, the new edge-directed interpolation (NEDI) is proposed to improve the accuracy with one-fold training sizes for predicting parameters. In...
In this paper, the power analysis of a single degree of freedom (DOF) is presented considering the controlled linear electric machines. The vibration energy harvesting system is modeled by tuned mass-damper models, subject to a sinusoidal force. Then the linear electrical machine is controlled to provide the extra damping force to vibration energy systems, and the damping force is modeled in terms...
Matrix factorization (MF) is a employed by many algorithms, such as collaborating filtering, text mining and deriving hidden features of words. Out-of-core heterogeneous MF implementations are recently used to take advantage of state-of-the-art architecture and can solve problems larger than the available memory of coprocessors. Due to the data set cannot fit into the limited amount of device memory,...
To have a high photocurrent and spatial resolution of 2-dimensional (2D) chemical image in light-addressable potentiometric sensor (LAPS), silicon substrate is thinned down to about 100 μm by Deep reactive-ion etching (DRIE). Compare to commercial Si substrate with thickness of 350 μm, photocurrent is increased for 4.5 times and operation frequency is increased to 20 kHz. pH sensitivity is 67.09 mV/pH...
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.