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 statistical process control, Gamma control charts are often designed for time-between-events (TBEs) monitoring. For Gamma distribution, the traditional equal-tail probability limits lead to the problem that some out-of-control events may occur in higher probability than in-control events. To overcome this problem, Gamma control limits with known parameters are proposed based on the narrowest confidence...
Remote plasma sources (RPS) are used in microelectronics fabrication to produce fluxes of radicals for etching and surface passivation in the absence of damage that may occur by charging and energetic ion bombardment. RPS reactors typically use flow distance and grids to reduce or eliminate charged particle fluxes from reaching the surface of the material being treated. Nitrogen trifluoride (NF3)...
Taking advantages of off-the-shelf cloud platform services, rather than maintaining a private database for logging the data from sensors, can significantly reduce labor and equipment costs for using a reliable database system. In this study, we present an inexpensive (less than 30 USD) embedded gateway with mobile network connectivity that can talk directly to cloud storage service providers, such...
This paper presents a 14 bit 1GS/s current-steering DAC with a mixed dynamic element matching (DEM) and total 3-dimensional sort-and-combine (T3D-SC) method. By measuring total MSB weight cells and sort-and-combining to calibrate the large static error and dynamic error which contain delay error and duty cycle error, the T3D-SC method uses digital calibration technology achieving a quiet good SFDR...
Rhytidectomy is an important research field of current beauty industry. Stretching wrinkles with an uniformly distributed pressure is a widely-used strategy. In this work, in order to evaluate the influence of the strategy on forehead skins, a numerical simulation of stretching forehead wrinkles was performed. By calculating the stretch ratio and stress in the stretching process, we found that stretching...
Gamma charts based on time-between-events (TBE) data are very useful for process monitoring in the manufacturing industry. The average run length (ARL) is widely adopted as a criterion to evaluate the performance of Gamma charts. The traditional equal-tail probability limits are often used to provide the control limits of Gamma charts, however their ARL curves will not approach their maximum values...
A 12-bit 20-MS/s charge redistribution successive approximation register analog-to-digital converter in a 65-nm CMOS technology is presented in this paper. To address the issue of long DAC settling time in bit-conversion, an improved internal clock generator is proposed. In addition, a novel SAR controller is introduced to minimize the critical path and improve the conversion speed. Simulation results...
This paper studies the impact of environment taxes and market competition on firms' choices of a clean technology. Specifically, we model two profit-maximizing firms competing with each other in a duopoly market where the firms charge the same price and face a common price-dependent demand. The firms play a two-stage game in the following sequence. In the first stage (technology game), the firms choose...
Non-practising entities, also known as NPEs, adopt lawsuits to collect authorization payments or/and settlement payments as their business models. Ascertaining which patent portfolio or patent layout and purchase strategy are suitable is an important topic of discussion for the NPEs who value operational performance. This study adopts the DigiTude company, an NPE, as the case study, exploring the...
Wireless mesh networking extends the communication range among cooperating multiple low-power wireless radio transceivers and is useful for collecting data from sensors widely distributed over a large area. By integrating an off-the-shelf wireless design, such as the XBee module, development of sensor systems with mesh networking capability can be accelerated. In this study, the design of an open-source...
In order to extract and measure facial wrinkles accurately and quickly, combined with the simulation of the wrinkle growth, we put forward an extraction method of facial wrinkles on the basis of the algorithm of surface fitting with splines. In our method, we regard the wrinkle area as the superposition of a continuous smooth surface and wrinkle texture. The method uses the score of second partial...
Hive is the most mature and prevalent data warehouse tool providing SQL-like interface in the Hadoop ecosystem. It is successfully used in many Internet companies and shows its value for big data processing in traditional industries. However, enterprise big data processing systems as in Smart Grid applications usually require complicated business logics and involve many data manipulation operations...
We demonstrate the oopd1 (object oriented plasma device for one dimension) particle-in-cell/Monte Carlo simulation tool for the capacitively coupled chlorine discharge with a comprehensive reaction set [1]. We explore a typical capacitively coupled chlorine discharge operated at both single frequency [1] and dual frequency [2,3] using oopd1 and obtain key plasma parameters, including particle density,...
Road lighting management, i.e., finding a faulty street lamp or street lamps blocked by overgrown trees for example, can improve road illumination and reduce traffic accidents. Based on previous work [1], which explores the use of illumination maps to detect faulty lamps, we present a road lighting management system for detecting significant changes in road lighting automatically. This system is characterized...
Precision ball screw assembly (hereafter called “ball screw”), as shown in Fig. 1, is a mechanical wear out part that widely used in CNC (computer numerical control) machine tools to control the movement of processing targets and spindles. Up until now, there has been no simple way to directly measure ball screw for knowing the state of wear quantitatively. An indirect approach is logging all the...
One of the main goals of all online social communities is to promote a stable, or perhaps, growing membership built around topics of like interest. Yet, communities are not impermeable to the potentially damaging effects resulting from those few participants that choose to behave in a manner that is counter to established norms of behavior. Typical moderators in online social communities are the ones...
This paper presents an adaptive sparse sampling approach and the corresponding real-time scalar field reconstruction method using mobile sensor networks. Traditionally, the sampling methods collect measurements without considering possible distributions of target signals. A feedback driven algorithm is discussed in this paper, where new measurements are determined based on the analysis of existing...
This paper presents an adaptive sparse sampling approach based on mobile robotic sensors. Traditionally, the sampling methods collect measurements without considering possible distributions of target signals. In this paper a feedback driven algorithm is discussed, where new measurements are determined based on the analysis of existing observations under a sparse domain. More specifically, Wavelet...
This paper presents an adaptive sparse sampling approach based on mobile robotic sensors. Traditionally, the sampling methods collect measurements without considering possible distributions of target signals. In this paper a feedback driven algorithm is discussed, where new measurements are determined based on the analysis of existing observations under a sparse domain. More specifically, Wavelet...
Cloud computing enables highly scalable services to be easily consumed over the Internet on an as-needed basis. A major feature of the cloud services is that users' data is usually processed remotely in unknown machines that users do not own or operate. While enjoying the convenience brought by this new emerging technology, users' fears of losing control of their own data(particularly financial and...
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.