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 a new No-Reference (NR) objective quality measurement method based on spread spectrum technique and discrete wavelet transform using ROI processing is proposed. In this method we divide the original image into two separate sub-images called ROI and non-ROI. Region of interest (ROI) is the decision area in a medical image which is very important. This area may indicate a disease and must...
Amateurs playing an instrument have difficulty reaching a professional level without practice and training in the presence of a mentor. We show that the skill level of a person playing a French horn could be distinguished by differences in the tone shape displayed via a spectrogram produced using the short-term Fourier transform. The appropriateness of this approach for comparing amateur and professional...
In this paper we have investigated into a multi-level amplitude modulation (M-AM) scheme for concentration-encoded unicast molecular communication between a transmitting nanomachine (TN) and a receiving nanomachine (RN) in a nanonetwork. The performance of M-AM scheme has been evaluated on the basis of signal strength in the form of average loss of concentration of received molecules at the location...
This paper presents a novel power efficient iterative Design Space Exploration (DSE) approach that finds the integrated solution to optimal/near-optimal scheduling and module selection with simultaneous reduction of the static power consumption of the design under the expenditure of minimal control steps. This iterative heuristic method is based on a novel priority function metric called ‘Priority...
Any incremental class testing approach has to answer the two following questions: What integration process, indicating in which order classes are (integration) tested, should be selected? Which test design techniques should be applied to unit and integration test classes? Although there is a fairly large number of reported works on both questions, much remains to be done. On the one hand, class unit/integration...
Delay Tolerant Network (DTN) works in challenging conditions where delays are highly expected and links disconnections are very likely. Quality of service (QoS) provisioning in this kind of environment is important. Some of the traditional QoS metrics of bit rate, delay, jitter, packet dropping probability and/or bit error rate are applicable metrics but we think that there are other important metrics...
One of the most common limitations of software is poor usability. Usability refers to the effectiveness, efficiency, and satisfaction with which users achieve their particular goals in a particular context. This paper reports an experiment which evaluates the usability factors between two software process modeling systems, EPF-Composer and DSL4SPM. Based on the standard ISO/IEC 9241, a method has...
In this paper, we propose a novel routing metric for efficient routing in 802.11 wireless mesh network. Recently a number of routing metrics have been proposed for mesh networks which aim at selecting the ”best” route between a pair of mesh routers. In particular, the ETX metric stands out as the basis of all contemporary routing metrics. In this paper, we address certain deficiencies of the ETX and...
The ionosphere is defined as a region of the earth's upper atmosphere where sufficient ionisation can exist to affect the propagation of radio waves. Estimation of missing data of ionosphere total electron content (TEC) are crucial and remain a challenge for GPS positioning and navigation system, space weather forecast, as well as many other Earth Observation System. There are a number of alternate...
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.