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.
Recently, power quality issues have captured more attentions. It is necessary to monitor power quality in order to analyze and evaluate it. But noises will influence the signals during data collection. It is hard to analyze signals correctly. Soft-threshold de-noising method based on wavelet transform is effective. This paper proposes an improved soft-threshold de-noising method based on 3 σ principle...
The trigger technique is an important mechanism in automated deduction. The technique is to trigger the resumption of a derivation which has been stopped due to a technical reason, and therefore lead to the completion of the derivation. The soundness of the technique, however, limits it to be applied to logic programs which have a finite (Herbrand) universe and, this has significantly restricted its...
In steam cracking of hydrocarbons P-containing compounds are used as additives to control coke formation and/or CO production. However, information concerning the influence of P-containing compounds on the decomposition of hydrocarbons during steam cracking is scarce. In this study, the influence of three P-containing compounds, hexamethyl phosphoric triamide (HMPA), tripiperidinophosphine oxide (TPyPO)...
Recent studies on end-to-end congestion control in IP networks have demonstrated the difficulties in compromising between stability mid fairness objectives. In this paper, we introduce a new congestion avoidance model, which can meet the key criteria of both objectives with enhanced source behavior. Our new scheme provides local system stability which is scalable to arbitrary delays, capacities and...
Threshold access sharing (TAS) is a policy based call admission control (CAC) scheme in wireless IP networks. It has been shown to adapt well to the limited wireless resources. However, its handling of handoff calls is missing. In this paper, we proposed a hybrid scheme which combines an improved TAS scheme with a simplified rate-based borrowing scheme, aiming to improve its performance both on new...
With the proliferation of nonlinear loads, power quality problems have been paid more attention to. In order to mitigate the influence, various power quality disturbances must be classified before an appropriate action can be taken. Wavelet packet is developed on wavelet transform, which can provide more plenteous time-frequency information. This paper selects energy and entropy of terminal nodes...
Recently, power quality issues have captured more attention. It is necessary to monitor power quality in order to analyze and evaluate it. The monitors will record huge data during disturbance. It is inconvenient for data storage and transmission. Compression of power quality disturbance data will save storage space efficiently and accelerate transmission speed. This paper proposes energy threshold...
In hybrid wired and wireless systems, mobile hosts constantly changes points of attachment to the wired networks, causing frequent disruptions to the ongoing network traffic. An infrastructure supported approach is required to meet the stringent delay and jitter requirements in non-disrupted services. We propose a mobility management scheme, called personal AP, to support seamless roaming. In personal...
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.