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.
Online teaching courses are becoming an appealing alternative to traditional in-class learning methods, therefore driving practitioners to explore new strategies for delivering contents to an overwhelming number of students. Nevertheless, migrating face-to-face learning methodologies to an online teaching environment is certainly challenging. More specifically, collaborative work, which provides valuable...
The excellent characteristics (low power loss, high speed/high temperature operation) of SiC semiconductors can contribute to realizing smaller power converter with a higher power output. Using our own packaging technology of double-sided cooling and SiC devices, we have developed the new, small 6-in-1 power module with high output power density. If the inductance of the main circuit is large, it...
Limitations of silicon (Si) based power electronic devices can be overcome with Silicon Carbide (SiC) because of its remarkable material properties. SiC is a wide bandgap semiconductor material with larger bandgap, lower leakage currents, higher breakdown electric field, and higher thermal conductivity, which promotes higher switching frequencies for high power applications, higher temperature operation,...
Outsourcing is a world-wide contemporary practice that has involved to software industry. Different States have incorporated this practice as a way of optimizing their resources. Therefore, software acquisitions require public calls for software tenders. Unfortunately, in Latin-American countries and, specially in their local governments, there are software projects formulated under conditions which...
Many of the new teaching methods that currently exist are based on collaborative learning. Indeed, cooperative work adds value to the processes of teaching and learning, allowing the acquisition of the Key Skills with greater ease and effectiveness. One of the fundamental factors to implement these methodologies based on cooperative work is the definition and formation of heterogeneous working groups...
This paper reports on an industrial DHEMT process for 650V rated GaN-on-Si power devices. The MISHEMT transistors use an in-situ MOCVD grown SiN as surface passivation and gate dielectric. Excellent off-state leakage, on-state conduction and low device capacitance and dynamic Ron is obtained. Initial assessment of the intrinsic reliability data on the in-situ SiN is provided.
The SiC JFET/Si MOSFET cascode is an attractive alternative to conventional Si MOSFETs or IGBTs due to its low on-resistance and good switching performance. However, dv/dt control without increased switching loss is difficult when using a conventional gate resistor or capacitor for the MOSFET. In this paper, a dv/dt and switching loss control method that ensures a good switching performance for the...
In this paper, the reliable SiNx/AlGaN/GaN MISHEMTs on silicon substrate with improved trap-related characteristics have been well demonstrated. The devices with our proposed treatment method showed less deep-level traps and more Si surface donors at SiNx-AlGaN interface. The trap related device characteristics are also improved by using our optimized treatment method. The devices with proposed treatment...
After the global financial crisis of 2008 the banking sector has shown a strong interest, internationally and in Colombia, in developing models to manage and measure the risks of business processes and in particular the risk associated with the operations of an organization (operational risk). This article proposes a model based on fuzzy credibility theory in order to mix different data sources for...
Functions of two variables appear frequently in engineering studies. Students have particular difficulties in understanding how the graphs of these functions are. This paper presents a sequential mode to analyze and reconstruct the graphical information in a function of two variables, up to display its three-dimensional image. This is done by representing the cuts of the graph of the function with...
This paper is dedicated to the research and development of hermetic and biocompatible packaging of microelectronic devices for medical applications. Materials such as Al2O3, HfO2, TiO2, ZnO, SiN, SiO2, SiOC, SiC, a-CH, and BN which had been reported as biocompatible and compatible with fabrication in standard clean rooms were studied. As there were many candidate materials, a method for selecting...
In this paper, a specific Si ion implantation is investigated as applied to ILD (Interlayer Dielectric) films (include SiO2 and SiN) property modification. The etch rate change of the films before/post implantation were checked by dilute HF solution and F radical contain plasma gas (SiCoNi@AMAT™). Different implant energy and dosage were also studied. It is found the etch rate of oxide and SiN films...
Through glass via (TGV) technology is considered to be a cost effective enabler for micro electromechanical systems (MEMS) and radio frequency (RF) system-in-package (SIP) technology. Inductively coupled plasma (ICP) and the Bosch etching process comprise one of the most pervasive methods for via formation in silicon. Unfortunately an equivalently process for glass remains elusive. In this paper,...
Anisotropic Inter-Poly Dielectric (AIS IPD) has been successfully developed. It enables center SiN thickness to be thicker at Floating-Gate (FG) top and thinner at FG side. Using AIS IPD, both programming speed and program saturation threshold voltage improve without reliability degradation even if the IPD physical thickness at FG side is about 2nm thinner than conventional IPD. Therefore, AIS IPD...
There are a number of methods available for video copy detection. Some of the methods were employing the application of local and global descriptors which were found to be ineffective in detections involving complex transformations. In order to overcome the above specified inefficiency, Scale Invariant Feature Transform (SIFT) descriptor came into picture but was found to have a high computational...
Elemental silicon is produced mainly by the Carbo-thermic reduction of silica sand. This technique produces rather impure silicon, which is termed as metallurgical grade silicon. Upgraded metallurgical grade silicon, produced from high purity silica, is usually used to produce semiconductor and solar grade silicon utilized in the manufacturing of microelectronic components of integrated circuits,...
In this research work, the effect of silica micro-beads on the optical nonlinear performance of silicon nano-particle dispersion synthesized by laser ablation is studied.
We demonstrated the growth of blue LED structures grown on 4-inch and 8-inch Si (111) substrates. GaN layers that have low threading dislocation density (TDD) of 1.6×108/cm2, which is comparable to state of the art in GaN on sapphire, can be obtained on 4-inch Si substrate by using a new TDD reduction technology using a silicon nitride (SiN) interlayer. A dependence of LED device performance on threading...
Patterns can help us to use right experiences to solve a kind of questions of certain filed. They are summarized from software development, and then used to accelerate the design and development of software. This paper further discussed the program model of JAVA Blueprint and then summarized the special patterns of procedure blueprint. Firstly, this paper extended the definition of JAVA Blueprint...
In this work we pretend to characterize the traces of some peripheral storage devices or disks, with the aim of determining the presence of the selfsimilar model. We have twenty-three (23) storage devices, working with financial applications, during twelve (12) hours of system activity. Each measurement represents a read/write request to the device, shaped by the variables: arrival time of the request,...
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.