5153 research outputs found
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Adaptive Equalization: LMS, RLS and CMA
No full textThis poster presents performance evaluation of adaptive equalizers (LMS, RLS and CMA) using different Quadrature Amplitude Modulation (QAM) techniques (4-QAM, 8-QAM); using Frequency Flat Fading and Frequency Selective Fading
The Effect of Nopalea™, a Nutritional Supplement Containing Cactus Fruit Juice, on C-Reactive Protein Levels in Healthy Adults Assessed using a Randomized, Double-Blind, and Controlled Experimental Design
No full textThis study was developed to investigate the anti-inflammatory effects of a commercial product (Nopalea™) containing Prickly Pear Cactus Fruit Juice in 286 healthy adults. The research method employed was a double blind, placebo controlled, and time-series design with C-Reactive Protein (CRP) serving as a marker for inflammation. CRP levels were measured at baseline as well as at eight weeks and 12 weeks post-treatment
Key Factors of Effective Water Governance in Rural India
No full textManja Wurschke's poster on water governance in the rural areas of India
Graphene Based Nanocomposite Hybrid Electrodes for Supercapacitors
No full textThere is an unmet need to develop high performance energy storage systems (ESS), capable of storing energy from both renewable and non-renewable sources to meet the current energy crisis and depletion of non-renewable sources. Amongst many available ESS, supercapacitors (ECs) are the most promising because they exhibit a high charge/discharge rate and power density, along with a long cycle life. The possibility of exploring the use of atomically thin carbon allotropes like graphene, carbon nanotubes (CNTs) and electrically conducting polymers (ECPs) such as polypyrrole (PPy) has been studied as a high performance conducting electrodes in supercapacitor application. A novel templated sustainable nanocomposite electrode has been fabricated using cellulose extracted from Cladophora c. aegagropila algae as component of the assembled supercapacitor device which later has been transitioned to a unique template-less freestanding nanocomposite supercapacitor electrode. The specific capacitance of polypyrrole-graphene-cellulose nanocomposite as calculated from cyclic voltammetry curve is 91.5 F g-1 at the scan rate 50 m Vs-1 in the presence of 1M NaCl electrolyte. The open circuit voltage of the device with polypyrrole -graphene-cellulose electrode was found to be around 225 m V and that of the polypyrrole -cellulose device is only 53 m V without the presence of graphene in the nanocomposite electrode. Understanding the fundamentals by fabricating template nanocomposite electrode, it led to fabricate a unique nanocomposite template-less freestanding film which comprises of polypyrrole-graphene-CNT hybrid. Various experiments have been performed using different electrolytes such ascorbic acid, sodium sulfate and sulfuric acid in different scan rates. The specific capacitance of polypyrrole-graphene-CNT nanocomposite with 0.1 wt% of graphene-CNT, as calculated from cyclic voltammetry curve is 450 F g-1 at the scan rate 5 m V s-1. For the first time a nanofibrous membrane has been developed as a separator which acts as an electrolyte reservoir and ionic diffusion membrane. The performance of the fabricated supercapacitor device has been analyzed using a multimeter and compared with a conventional alkaline (1.5 V) battery. Lighting up of 2.2 V light emitting diode has been demonstrated using the fabricated supercapacitor
Bioinspired Nanomaterials: Self Stiffening Artificial Muscles
No full textCytoskeletal organization and elasticity are greatly influenced by molecular stiffness and sterics as well as externally imposed and internally generated stresses or so it might be hypothesized. These dynamic networks are generally composed of stiff filaments of actin and flexible crosslinkers. Recent experiments have identified not only isotropic, nematic and raft phases of such structures but also affine and non-affine elastic regimes of protein-crosslinked actin networks. Synthetic materials lack the complexity of biological tissues, and man-made materials that respond to external stresses through a permanent increase in stiffness are uncommon. Here we report for the first time, the systems of nanotube-polydimethyl siloxane(CNT-PDMS) soft nanocomposite and analogous liquid crystalline elastomer (LCE) that mimic the actin filaments in muscle tissues. Polydomain nematic LCEs increase in stiffness by up to 90% when subjected to a low amplitude (5%), repetitive dynamic compression. Elastomer stiffening is influenced by liquid crystal content, the presence of a nematic liquid crystal phase and the use of a dynamic as opposed to static deformation. Rheological and X-ray diffraction measurements reveal that the stiffening can be attributed to a mobile nano-scale nematic director that rotates in response to dynamic compression. Dynamic stiffening, not previously observed in liquid crystal elastomers may pave the way for useful development of self-healing materials and for the development of biocompatible, adaptive materials for tissue replacement
Unspoken Connections: How I Learned to Love Punctuation
No full textThere’s a secret about punctuation that most English teachers don’t tell you: beyond “rules” and correctness, there’s a power and beauty to those little symbols that we find ourselves placing between and around the words place on the page or computer screen. Rather than thinking about punctuation marks as necessary and therefore tedious— perhaps even unwelcome— we can learn to love their curves and points and use them with purpose, creativity, and yes, even affection. With the help of some of the best poets and prose readers, Professor Amy Nawrocki shows how various marks (parentheses, dashes, semicolons and commas) can inspire and delight, open us to the possibilities of a deep and enduring love of language and all its decorations
Authenticated Multiparty Secret Key Sharing Using Quantum Entanglement Swapping
No full textIn this poster we propose a new protocol for multiparty secret key sharing by using quantum entanglement swapping. Quantum Entanglement swapping is a process that allows two non-interacting quantum systems to be entangled. Further, to increase the security level and to make sure that the users are legitimate, authentication for both parties will be required by a trusted third party. In this protocol, a trusted third party will authenticate the sender and the receiver and help them forming a secret key. Furthermore, the proposed protocol will perform entanglement swapping between the sender and the receiver. The result from the entanglement swapping will be an Einstein-Podolsky-Rosen (EPR) pair that will help them in forming and sending the secret key without having the sender to send any physical quantum states to the receiver. This protocol will provide the required authentication of all parties to the trusted party and it will provide the required secure method in transmitting the secret key
Title III Initiatives and Outcomes at the University of Bridgeport
No full textThe successful completion of the five-year Title III grant at the University of Bridgeport resulted in the achievement of its measureable objectives, making a positive impact on the university’s capacity to fulfill the goals of the Title III legislation. The Center for Excellence in Learning and Teaching (CELT), established as a part of the University of Bridgeport’s Title III project, created opportunities for faculty professional development, enhanced the university’s technology infrastructure, and focused attention on increasing student success and retention
A New Algorithm Based on Discrete Fourier Transform to Improve the Lifetime of Underwater Wireless Sensor Networks Communications
No full text© ASEE 2014Wireless Sensor Networks (WSNs) have become an important means of gathering environmental and physical information from a wide range of areas. WSNs could be used in underground, aboveground and underwater applications. In this paper, we focus on underwater transmission. One of the main limitations of WSNs is the power consumption and short lifetime of the sensors. In this paper, we propose a new solution for underwater Wireless Sensor Networks to overcome the problem that is caused by the ionized nature of seawater. This work presents a methodology to improve the lifetime of WSNs. The wireless sensors have three main functions: sensing, processing and transmitting. The first two factors consume very less power compared to the third. Thus, we need to guarantee the successful transmission of signal with nominal and efficient use of power to improve the lifetime of the sensors. Improving the lifetime of these sensors will improve the experience of the end user, as the information-gathering lifetime of the sensors increases. Based on the results presented in this paper, we can reduce the power consumption, thus improving the lifetime and the signal loss rate
