132 research outputs found
Supplemental Material, Figure_S1 - Preparation and characterization of polypropylene/polylactide blends and nanocomposites and their biodegradation study
No full textSupplemental Material, Figure_S1 for Preparation and characterization of polypropylene/polylactide blends and nanocomposites and their biodegradation study by Dev K Mandal, Haripada Bhunia, Pramod K Bajpai, Chandrasekhar V Chaudhari, Kumar A Dubey, Lalit Varshney and Anil Kumar in Journal of Thermoplastic Composite Materials</p
Excited-state intramolecular proton transfer of 2-acetylindan-1,3-dione studied by ultrafast absorption and fluorescence spectroscopy
Get PDFWe employ transient absorption from the deep-UV to the visible region and fluorescence upconversion to investigate the photoinduced excited-state intramolecular proton-transfer dynamics in a biologically relevant drug molecule, 2-acetylindan- 1,3-dione. The molecule is a ß-diketone which in the electronic ground state exists as exocyclic enol with an intramolecular H-bond. Upon electronic excitation at 300 nm, the first excited state of the exocyclic enol is initially populated, followed by ultrafast proton transfer (±160 fs) to form the vibrationally hot endocyclic enol. Subsequently, solvent-induced vibrational relaxation takes place (±10 ps) followed by decay (±390 ps) to the corresponding ground state. © 2015 Author(s)1561sciescopu
Clock multiplication techniques for high-speed I/Os
Get PDFGeneration of a low-jitter, high-frequency clock from a low-frequency reference clock using classical analog phase-locked loops (PLLs) requires a large loop filter capacitor and power hungry oscillator. Digital PLLs can help reduce area but their jitter performance is severely degraded by quantization error. In this dissertation different clock multiplication techniques have been explored that can be suitable for high-speed wireline systems. With the emphasis on ring oscillator based architecture using cascaded stages, three possible architectures are explored.
First, a scrambling TDC (STDC) is presented to improve deterministic jitter (DJ) performance when used with a low-frequency reference clock. A cascaded architecture with digital multiplying delay locked loop as the first stage and hybrid analog/digital PLL as the second stage is used to achieve low random jitter in a power efficient manner. Fabricated in a 90nm CMOS process, the prototype frequency synthesizer consumes 4.76mW power from a 1.0V supply and generates 160MHz and 2.56 GHz output clocks from a 1.25MHz crystal reference frequency. The long-term absolute jitter of the 60MHz digital MDLL and 2.56 GHz digital PLL outputs are 2.4 psrms and 4.18 psrms, while the peak-to-peak jitter is 22.1 ps and 35.2 ps, respectively. The proposed frequency synthesizer occupies an active die area of 0.16mm2 and achieves power efficiency of 1.86 mW/GHz.
Second, a hybrid phase/current-mode phase interpolator (HPC-PI) is presented to improve phase noise performance of ring oscillator-based fractional-N PLLs. The proposed HPC-PI alleviates the bandwidth trade-off between VCO phase noise suppression and ΔΣ quantization noise suppression. By combining the phase detection and interpolation functions into an XOR phase detector/interpolator (XOR PD-PI) block, accurate quantization error cancellation is achieved without using calibration. Use of a digital MDLL in front of the fractional-N PLL helps in alleviating the bandwidth limitation due to reference frequency and enables bandwidth extension even further. The extended bandwidth helps in suppressing the ring-VCO phase noise and lowering the in-band noise floor. Fabricated in 65nm CMOS process, the prototype generates fractional frequencies from 4.25 to 4.75 GHz, with an in-band phase noise floor of -104 dBc/Hz and 1.5 psrms integrated jitter. The clock multiplier achieves power efficiency of 2.4mW/GHz and FoM of -225.8 dB.
Finally, an efficient clock generation, recovery, and distribution techniques for flexible-rate transceivers are presented. Using a fixed-frequency low-jitter clock provided by an integer-N PLL, fractional frequencies are generated/recovered locally using multi-phase fractional clock multipliers. Fabricated in a 65nm CMOS, the prototype transceiver can be programmed to operate at any rate from 3-to-10 Gb/s. At 10 Gb/s, integrated jitter of the Tx output and recovered clock is 360 fsrms and 758 fsrms, respectively.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01The student, Romesh Kumar Nandwana, accepted the attached license on 2017-04-17 at 15:09.The student, Romesh Kumar Nandwana, submitted this Dissertation for approval on 2017-04-17 at 15:42.This Dissertation was approved for publication on 2017-04-19 at 08:46.DSpace SAF Submission Ingestion Package generated from Vireo submission #10816 on 2017-08-10 at 15:05:48Made available in DSpace on 2017-08-10T20:32:59Z (GMT). No. of bitstreams: 3
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Previous issue date: 2017-04-19Embargo set by: Colleen Fallaw for item 102771
Lift date: 2019-08-10T21:27:21Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 102771 on 2019-08-11T09:15:10Z
Anomaly-Based DNN Model for Intrusion Detection in IoT and Model Explanation: Explainable Artificial Intelligence
No full textIoT has gained immense popularity recently with advancements in technologies and big data. IoT network is dynamically increasing with the addition of devices, and the big data is generated within the network, making the network vulnerable to attacks. Thus, network security is essential, and an intrusion detection system is needed. In this paper, we proposed a deep learning-based model for detecting intrusions or attacks in IoT networks. We constructed a DNN model, applied a filter method for feature reduction, and tuned the model with different parameters. We also compared the performance of DNN with other machine learning techniques in terms of accuracy, and the proposed DNN model with weight decay of 0.0001 and dropout rate of 0.01 achieved an accuracy of 0.993, and the reduced loss on the NSL-KDD dataset having five classes. DL models are a black box and hard to understand, so we explained the model predictions using LIME.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
मीडिया में दलित, पिछड़े और स्त्री की हिस्सेदारी का सवाल
Get PDFसितंबर, 2009 में इतिहास, समाजशास्त्र, दर्शन, साहित्य व पत्रकारिता के क्षेत्र में काम करने वाले अनेक प्रमुख विद्वान व युवा अध्येता शिमला में ‘हिंदी की आधुनिकता’ पर पुनर्विचार करने के लिए जुटे थे। समाजशास्त्री अभय कुमार दुबे के संयोजन में यह सात दिवसीय आयोजन भारतीय उच्च अध्ययन संस्थान, शिमला ने किया था।
आयोजन में इस विषय पर व्यापक विचार-विमर्श किया गया कि क्या एक भाषा के रूप में हिंदी आधुनिक मूल्यों का वहन करती है। वहां हिंदी पत्रकारिता में आधुनिक मूल्यों के समावेश की स्थिति पर भी चर्चा हुई ।
आयोजन में पत्रकारों की उच्च सामाजिक पृष्ठभूमि का मीडिया पर पड़ने वाले प्रभाव पर फारवर्ड प्रेस के मौजूदा प्रबंध संपादक प्रमोद रंजन, जो उस समय पटना से प्रकाशित मासिक पत्रिका ‘जन विकल्प’ के संपादक थे, ने अपना बीज-वक्तव्य दिया था, जिस पर तीखी बहस हुई थी। इस विषय पर अभय कुमार दुबे के अलावा अपूर्वानंद, आदित्य निगम, रविकांत, सदन झा, राकेश कुमार सिंह विनीत कुमार और पंकज पुष्कर ने अपनी बातें रखीं।
आयोजन के अन्य सत्रों में ओमप्रकाश वाल्मिकी, सुधीर चंद्र, सुधीश पचौरी, रोहिणी अग्रवाल, अनामिका, वैभव सिंह, सविता सिंह, नवीन चंद्र, राजीव रंजन गिरि, अजय नावारिया, पीटर रोनॅल्ड डिसूजा, चौधरी मुहम्मद नईम आदि के भाषण हुए थे। इस आयोजन में पढे गए पर्चों और उसपर हुई बातचीत ‘हिंदी-आधुनिकता : एक पुनर्विचार’ (संपादक, अभय कुमार दुबे, 2014) शीर्षक से तीन खंडों में प्रकाशित है।
यह उस किताब में प्रकाशित बातचीत का अंश है।हिन्दी पत्रकारिता के पिछले 150 सालों में क्या बदला है? वास्तव में यही वह सवाल है, जिसे हमें ऐसी किसी भी चर्चा के आरम्भ में पूछना चाहिए। क्या पत्रकारिता आजादी के बाद पतित हुई है? क्या पत्रकारिता ज्ञान की सत्ता का ही एक हिस्सा नहीं, जिसके चारों ओर द्विजों ने चारदीवारियां खींच रखी थीं और जिसका दुरुपयोग वे 1947 के बहुत पहले से और उसके बाद भी अपनी सामाजिक, आर्थिक, राजनैतिक सत्ता को बचाए रखने, पुनर्स्थापित करने के लिए करते रहे हैं
A facile and expedient microwave-assisted solvent-free method for the synthesis of 2-amino-4-(2-oxo-2H-chromen-3-yl)nicotinonitriles
No full text‐Catalyzed Knoevenagel Condensation: A Facile Synthesis of 5‐(1H‐Indol‐3‐yl)methylene‐2,2‐dimethyl‐1,3‐dioxane‐4,6‐dione, and Their N‐Alkyl Derivatives by Using PEG‐600 as the Reaction Medium.
No full textPEG-600 mediated one-pot reaction of 3-acetyl-2H-chromen-2-one with heterylthiols and phenylthioureas using tetrabutylammonium tribromide as an efficient green reagent
No full textA simple method for the one-pot reaction of 3-acetyl-2H-chromen-2-one with different heterylthiols and phenylthioureas under green conditions using tetrabutylammonium tribromide (TBATB) as an efficient reagent has been described.</p
Synthesis of novel substituted 3-(4-((1H-benzo[d]imidazol-2-ylthio)methyl)-1-phenyl-1H-pyrazol-3-yl)-2H-chromen-2-ones: various approaches
No full textPPh3-catalyzed knoevenagel condensation: A facile synthesis of 5-(1H-indol-3-yl)Meth- ylene)-2, 2-Dimethyl-1, 3-Dioxane-4, 6-dione, and their N-alkyl derivatives by using peg-600 as the reaction medium
No full text- …
