CCECE 2003 - Canadian Conference on Electrical and Computer Engineering. Toward a Caring and Humane Technology (Cat. No.03CH37436)
The mobile wireless networks present challenges in designing fault-tolerant systems because of th... more The mobile wireless networks present challenges in designing fault-tolerant systems because of the mobile host (MH) mobility, limited bandwidth on wireless links, limited MH local storage. limited battery power, and the handoff Checkpointing and rollback techniques ...
Taste mainly depends on the physiology, sensitivity and structure of taste buds. It is an importa... more Taste mainly depends on the physiology, sensitivity and structure of taste buds. It is an important parameter in administering drugs orally. Bitter taste is a major limitation to patient compliance. Donepezil hydrochloride (DH) is a bitter drug used in Alzheimer's disease. Amongst the many techniques for taste masking, using ion exchange resins has been extensively reported. The technique of forming tasteless complexes with bitter drugs involves selection of most appropriate exchanger and optimization of complexing ratio. The aim of the present work was to select the best cationic exchanger amongst Indion 414, Indion 234 and Indion 214. All parameters were optimized to produce drug-loaded tasteless complexes. Complexation was carried out using batch process prior to which, acid-alkali activation was performed to remove adsorbed impurities from the resin bed surface and hence improve loading efficiency. UV-spectrophotometric method was used to determine percent drug loading. The ...
Data collection using paper-based questionnaires can be time consuming and return errors affect d... more Data collection using paper-based questionnaires can be time consuming and return errors affect data accuracy, completeness, and information quality in health surveys. We compared smartphone and paper-based data collection systems in the Burden of Obstructive Lung Disease (BOLD) study in rural Sudan. This exploratory pilot study was designed to run in parallel with the cross-sectional household survey. The Open Data Kit was used to programme questionnaires in Arabic into smartphones. We included 100 study participants (83% women; median age = 41.5 ± 16.4 years) from the BOLD study from 3 rural villages in East-Gezira and Kamleen localities of Gezira state, Sudan. Questionnaire data were collected using smartphone and paper-based technologies simultaneously. We used Kappa statistics and inter-rater class coefficient to test agreement between the two methods. Symptoms reported included cough (24%), phlegm (15%), wheezing (17%), and shortness of breath (18%). One in five were or had be...
Universal Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) is considered as a promis... more Universal Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) is considered as a promising 5G waveform candidate. It requires a relatively simple transceiver structure, while achieving much better spectral properties compared to CP-OFDM. During the early deployment of 5G systems, many frequency bands will still be occupied by 4G systems, using the legacy CP-OFDM waveform. The main focus in this work lies on using the uplink shared channel (PUSCH) with both waveforms on the same carrier. We analyze the impact of inter-carrier interference (ICI) leakage on the performance of both receivers for neighboring allocations using the different waveforms. We also propose two techniques to mitigate the effect of ICI between both waveforms, namely: 1-delaying the transmitted UF-OFDM signal relative to the transmitted CPOFDM signal to reduce the ICI on the CP-OFDM receiver and 2-windowing at the UF-OFDM receiver to suppress the power spectral leakage from the CP-OFDM signal.
This paper provides indications and simulative performance evaluations of how a wireless system c... more This paper provides indications and simulative performance evaluations of how a wireless system can profit from being able to support various subcarrier spacings concurrently. We show that with using this degree of freedom high Doppler, low latency and extended coverage scenarios are improved. In our investigations we consider different options for multi-carrier numerology, frame design and pilot placement. Based on our investigation results and general considerations we propose a set of numerology settings for 5G. Furthermore we propose a tiling concept, enabling the parallel usage of different user-specific numerologies.
2016 IEEE International Conference on Communications (ICC), 2016
We propose an enhanced iterative interference cancellation (IIC) scheme for single carrier freque... more We propose an enhanced iterative interference cancellation (IIC) scheme for single carrier frequency domain equalization without cyclic prefix extension. By reduction of error propagation, our scheme significantly improves BER performance, especially under mobile channel conditions whilst keeping the computational complexity low for efficient implementation. The latter is achieved by explicitly excluding channel decoding in the IIC loop and applying the equalization step completely in the frequency domain. We evaluate the enhanced IIC for fast Rayleigh fading channels and use the FFT block size as a design factor to reduce Doppler induced inter-carrier interference. The above considerations allow for a competitive trade-off between performance and computational complexity.
Feminism is a movement for the political, social, and education equality of women with men. In th... more Feminism is a movement for the political, social, and education equality of women with men. In the past, women have been degraded, subjugated, enslaved, suppressed and sexually tortured in most parts of the world. In modern times, women struggled for their emancipation and claimed for ‘equality’ and ‘complete freedom’ that appeared in the form of different feminist movements. The apostles of feminism do not waste any chance in painting Islam as a backward and discriminatory religion. Allama Iqbal, a great Muslim philosopher, has also discussed about women’s role and status in a society, therefore he may be studied in this respect. More particularly, his lectures, discourses, research papers and poetry like ‘Ramooz-eBekhudi’, ‘Zareb-e-Kaleem’, and ‘Javed Nama’ can be analyzed for his feminist approach as well as Allama has analyzed the Western attitude towards women. Iqbal is against that ‘equality’ demanded by European women because the natural responsibilities and the perceived rol...
CCECE 2003 - Canadian Conference on Electrical and Computer Engineering. Toward a Caring and Humane Technology (Cat. No.03CH37436)
The mobile wireless networks present challenges in designing fault-tolerant systems because of th... more The mobile wireless networks present challenges in designing fault-tolerant systems because of the mobile host (MH) mobility, limited bandwidth on wireless links, limited MH local storage. limited battery power, and the handoff Checkpointing and rollback techniques ...
Taste mainly depends on the physiology, sensitivity and structure of taste buds. It is an importa... more Taste mainly depends on the physiology, sensitivity and structure of taste buds. It is an important parameter in administering drugs orally. Bitter taste is a major limitation to patient compliance. Donepezil hydrochloride (DH) is a bitter drug used in Alzheimer's disease. Amongst the many techniques for taste masking, using ion exchange resins has been extensively reported. The technique of forming tasteless complexes with bitter drugs involves selection of most appropriate exchanger and optimization of complexing ratio. The aim of the present work was to select the best cationic exchanger amongst Indion 414, Indion 234 and Indion 214. All parameters were optimized to produce drug-loaded tasteless complexes. Complexation was carried out using batch process prior to which, acid-alkali activation was performed to remove adsorbed impurities from the resin bed surface and hence improve loading efficiency. UV-spectrophotometric method was used to determine percent drug loading. The ...
Data collection using paper-based questionnaires can be time consuming and return errors affect d... more Data collection using paper-based questionnaires can be time consuming and return errors affect data accuracy, completeness, and information quality in health surveys. We compared smartphone and paper-based data collection systems in the Burden of Obstructive Lung Disease (BOLD) study in rural Sudan. This exploratory pilot study was designed to run in parallel with the cross-sectional household survey. The Open Data Kit was used to programme questionnaires in Arabic into smartphones. We included 100 study participants (83% women; median age = 41.5 ± 16.4 years) from the BOLD study from 3 rural villages in East-Gezira and Kamleen localities of Gezira state, Sudan. Questionnaire data were collected using smartphone and paper-based technologies simultaneously. We used Kappa statistics and inter-rater class coefficient to test agreement between the two methods. Symptoms reported included cough (24%), phlegm (15%), wheezing (17%), and shortness of breath (18%). One in five were or had be...
Universal Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) is considered as a promis... more Universal Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM) is considered as a promising 5G waveform candidate. It requires a relatively simple transceiver structure, while achieving much better spectral properties compared to CP-OFDM. During the early deployment of 5G systems, many frequency bands will still be occupied by 4G systems, using the legacy CP-OFDM waveform. The main focus in this work lies on using the uplink shared channel (PUSCH) with both waveforms on the same carrier. We analyze the impact of inter-carrier interference (ICI) leakage on the performance of both receivers for neighboring allocations using the different waveforms. We also propose two techniques to mitigate the effect of ICI between both waveforms, namely: 1-delaying the transmitted UF-OFDM signal relative to the transmitted CPOFDM signal to reduce the ICI on the CP-OFDM receiver and 2-windowing at the UF-OFDM receiver to suppress the power spectral leakage from the CP-OFDM signal.
This paper provides indications and simulative performance evaluations of how a wireless system c... more This paper provides indications and simulative performance evaluations of how a wireless system can profit from being able to support various subcarrier spacings concurrently. We show that with using this degree of freedom high Doppler, low latency and extended coverage scenarios are improved. In our investigations we consider different options for multi-carrier numerology, frame design and pilot placement. Based on our investigation results and general considerations we propose a set of numerology settings for 5G. Furthermore we propose a tiling concept, enabling the parallel usage of different user-specific numerologies.
2016 IEEE International Conference on Communications (ICC), 2016
We propose an enhanced iterative interference cancellation (IIC) scheme for single carrier freque... more We propose an enhanced iterative interference cancellation (IIC) scheme for single carrier frequency domain equalization without cyclic prefix extension. By reduction of error propagation, our scheme significantly improves BER performance, especially under mobile channel conditions whilst keeping the computational complexity low for efficient implementation. The latter is achieved by explicitly excluding channel decoding in the IIC loop and applying the equalization step completely in the frequency domain. We evaluate the enhanced IIC for fast Rayleigh fading channels and use the FFT block size as a design factor to reduce Doppler induced inter-carrier interference. The above considerations allow for a competitive trade-off between performance and computational complexity.
Feminism is a movement for the political, social, and education equality of women with men. In th... more Feminism is a movement for the political, social, and education equality of women with men. In the past, women have been degraded, subjugated, enslaved, suppressed and sexually tortured in most parts of the world. In modern times, women struggled for their emancipation and claimed for ‘equality’ and ‘complete freedom’ that appeared in the form of different feminist movements. The apostles of feminism do not waste any chance in painting Islam as a backward and discriminatory religion. Allama Iqbal, a great Muslim philosopher, has also discussed about women’s role and status in a society, therefore he may be studied in this respect. More particularly, his lectures, discourses, research papers and poetry like ‘Ramooz-eBekhudi’, ‘Zareb-e-Kaleem’, and ‘Javed Nama’ can be analyzed for his feminist approach as well as Allama has analyzed the Western attitude towards women. Iqbal is against that ‘equality’ demanded by European women because the natural responsibilities and the perceived rol...
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