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مولانا حسین احمد مدنی

حضرت مولانا حسین احمد مدنی
شیخ الہند حضرت مولانا حسین احمد صاحب مدنی کی وفات ملک و ملت کا اتنا بڑا حادثہ ہے کہ اس پر اظہار غم سے قلم قاصر ہے، یہ تنہا ایک شخص کی موت نہیں بلکہ صحیح معنوں میں موت العالم، موت العالم ہے۔
وما کان قیس ھلکہ ھلک واحد لکنہ بنیان قومہ تھدما
علم و عمل، دین و تقویٰ، سلوک و تصوف، ارشاد و ہدایت، جہاد و جانبازی، خلق عظیم و لطف عمیم، کس کس چیز کا ماتم کیا جائے وہ اس دور میں سلف صالحین کا نمونہ اور اسلام کی مجسم تصویر تھے، ان کی ایک ایک ادا سے اسوۂ صحابہ آشکار تھا، دین کے متفرق جلوے اس دور کے اور بھی صلحاء و اخیاء میں ہوں گے، مگر ان کی ذات آنچہ خوباں ہمہ دارند توتنہا داری کی مصداق تھی اور ان پر اس جامعیت کا خاتمہ ہوگیا، وہ سراپا عمل، سراپا جہاد اور ہمارے پرانے کاروان ملت کے آخری مسافر تھے، ان پر اس سلسلۃ الذہب کی خصوصیات ختم ہوگئیں، جس کا آغاز خاندان دلی اﷲٰی سے ہوا تھا، اس نازک دور میں ایسی ہستیوں کا اٹھ جانا ملک و ملت کی بڑی بدنصیبی اور اسلام کی غربت و بے کسی کی نشانی ہے، ایسے نفوس قدسیہ مدتوں میں پیدا ہوتے ہیں، اﷲ تعالیٰ اس مجاہد جلیل کو عالم آخرت کی سربلندی سے سرفراز فرمائے اورشہداء و صدیقین کا رفیق بنائے۔ (شاہ معین الدین ندوی، جنوری ۱۹۵۸ء)

Spontaneous Abortions and Gestational Diabetes Mellitus- A Study from Pakistan

Background: Gestational diabetes mellitus leads to adverse pregnancy outcomes. Objectives: The objective of the study was to explore the relationship of spontaneous abortions with gestational diabetes mellitus in pregnant women from rural and urban Lahore. Methods: This cross-sectional study was conducted at University of Health Sciences, Lahore in 2019. Among 60 pregnant women sampled, 30 had gestational diabetes mellitus (GDM) and 30 were normal pregnant controls. Pregnant women were sampled from different hospitals of rural and urban areas of Lahore. Independent sample t-test was applied for analyzing the data. Chi- square test was used to analyze the categorical variables. Association of fasting blood glucose (FBG) and abortions was checked. Odd ratio and relative risk were calculated. Results: Mean fasting blood sugar levels were significantly higher in GDM group (105 mg/dL) as compared to non-GDM group (80.50 mg/dL) at p<0.001. The proportions of the women with increased number of abortions had significantly higher blood glucose levels (OR 5.091, 95% CI, RR 1.27). Conclusions: Gestational diabetes mellitus is associated with an increased risk of spontaneous abortions.

Performance Enhancement in Cognitive Radio Sensor Networks

Wireless sensor networks (WSNs) have become the integral part of our daily life activities. These WSNs can utilize the unlicensed industrial, scientific and medical (ISM) band to communicate the sensed data. The ISM band has been already saturated due to overlaid deployment of WSNs and other wireless technologies such as WiFi etc. To solve this problem, WSNs have been powered up by cognitive radio (CR) capability and this rise to a new type of network called as cognitive radio sensor networks (CRSNs). In CRSNs, the unlicensed users can utilize the unlicensed as well as licensed band opportunistically. The licensed users are called the primary radio (PR) nodes where as the opportunistic unlicensed users are called as secondary or CRSN nodes. By using CR technique, CRSN nodes can utilize the spectrum holes opportunistically avoiding the interference with PR nodes. CRSNs can be deployed for number of purposes such as dynamic spectrum access to cognitive radio nodes, opportunistic channel access, overlaid deployments of multiple concurrent networks, and communication under different spectrum regulations. The potential applications of CRSNs include indoor sensing applications, multimedia applications, multi-class heterogeneous sensing applications, and real-time surveillance applications etc. All these applications require high bandwidth for communication along with avoiding CR-PR interference. In this regard, novel techniques are required which can provide large bandwidth to CRSN nodes to support their data requirements. Channel bonding (CB) is a technique to provide wide band channel by combining multiple contiguous channels. By using channel bonding (CB) technique, CRSN nodes attempt to find and combine contiguous channels to avail larger bandwidth. In this PhD thesis, we have made several contributions. Firstly, we have provided an extensive literature review of CB schemes, made meaningful classification of CB approaches and highlighted the applications of CB in various networks. Next, we have enhanced network simulator NS-2 and proposed a framework for simulating CRSNs in NS-2. Third, we have proposed an algorithm Primary Radio Activity aware Channel Bonding algorithm (PRACB) to perform channel bonding in CRSNs. We have implemented our proposed scheme PRACB in NS-2 and compared it with three schemes sample width algorithm (SWA), cognitive radio networks over white spaces (KNOWS) and AGILE. We then evaluated the performance of PRACB in different PR activity regimes. The simulation results show that our algorithm significantly avoids CR-PR harmful interference and CB in cognitive radio sensor networks (CRSNs) provides greater bandwidth to CRSN nodes. Next, we have proposed two remaining idle time aware channel bonding schemes RITCB and RITCB-IP, which select channels for CRSN nodes based on remaining idle time. In the end, we have performed comparison analysis of our schemes and shown that intelligent channel selection effectively improves the delivery ratio of CRSN nodes. In addition, some future research directions have also been highlighted at the end of this thesis.
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