...Development and Applications of Acoustic Charge Transport CID #478 Physics 222 Term Paper #1 Abstract Acoustic charge transport is accomplished through the use of a surface acoustic wave passing through a low dimensional electron layer. The power efficiency is increased with a piezoelectric substrate. Quantum wires are formed with higher wave intensity, and quantum dots are formed with the interference of two waves. Such methods have applications in electronics. Excitons are preserved for longer times with the use of an acoustic charge transport system, which allows for the development and implementation of optoelectronic delays and storage devices. A common goal of much of today’s technological development is finding ways to make existing technology smaller or more efficient. This is especially apparent in electronics, where a constant push is made to make devices smaller, lighter, and more powerful. Acoustic charge transport (ACT) is a relatively new concept and technique which has applications in both electronics and optoelectronics, which uses light instead of electricity. Not only does ACT have applications in these areas, it has distinct advantages by being smaller and more efficient than currently employed systems. Acoustic charge transport, as the name suggests, is the moving of charge through the use of acoustic waves. The charge that is transported consists of electrons forming a lowdimensional layer, residing in a semiconductor film called...
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...Challenges for Efficient Communication in Underwater Acoustic Sensor Networks Ian F. Akyildiz, Dario Pompili, Tommaso Melodia Broadband & Wireless Networking Laboratory School of Electrical & Computer Engineering Georgia Institute of Technology, Atlanta, GA 30332 Tel: (404) 894-5141 Fax: (404) 894-7883 e-mail:{ian, dario, tommaso}@ece.gatech.edu Abstract— Ocean bottom sensor nodes can be used for oceanographic data collection, pollution monitoring, offshore exploration and tactical surveillance applications. Moreover, Unmanned or Autonomous Underwater Vehicles (UUVs, AUVs), equipped with sensors, will find application in exploration of natural undersea resources and gathering of scientific data in collaborative monitoring missions. Underwater acoustic networking is the enabling technology for these applications. Underwater Networks consist of a variable number of sensors and vehicles that are deployed to perform collaborative monitoring tasks over a given area. In this paper, several fundamental key aspects of underwater acoustic communications are investigated. Different architectures for two-dimensional and three-dimensional underwater sensor networks are discussed, and the underwater channel is characterized. The main challenges for the development of efficient networking solutions posed by the underwater environment are detailed at all layers of the protocol stack. Furthermore, open research issues are discussed and possible solution approaches are outlined...
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...SBFZ ICT PROFILE (For Updating) SUBIC BAY FREEPORT ZONE: ICT HUB LOCATION PROFILE Page 1 SITUATIONAL ANALYSIS (INTERNAL LANDSCAPE) ANALYSIS: CURRENT PRODUCT - SUBIC BAY SPECIAL ECONOMIC AND FREEPORT ZONE Product Features, Benefits, and Appeals Subic Bay Freeport Zone (SBFZ) has a total area of 67, 452 hectares both land and water (water area has a total of 12,350 hectares and a land area of 55, 102 hectares as defined by Proclamation No. 532 of the Subic Special Economic and Freeport Zone SSEFZ) Metes and Bound. It is comprised by the City of Olongapo, Subic Town, San Antonio in Zambales and the former US Naval Reservation. The earliest predecessor to the USFAC Subic Bay was an un finished Spanish Naval Station, acquired by the U. S. in 1898, following the Spanish American War. During World War II, most of the original station was destroyed by American rear guard action and aircraft bombing attacks. Following World War II and the achievement of Philippine independence, a decision was made to establish a U. S. Naval Base at Subic Bay. Substantial construction efforts were begun and accelerated during the Korean Conflict, resulting in the establishment of the U. S. Naval Base, Subic Bay, in 1954. Much of the area now occupied by the Freeport was previously occupied by the City of Olongapo. At that time, the Commander of the Naval Base was also in control of the City of Olongapo. During the Vietnam Conflict, construction of the facilities was again accelerated, and...
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...Annu. Rev. Fluid Mech. 2000. 32:445–476 Copyright ᭧ 2000 by Annual Reviews. All rights reserved SONOLUMINESCENCE: How Bubbles Turn Sound into Light S. J. Putterman and K. R. Weninger Physics Department, University of California, Los Angeles, California 90095; e-mail: putterman@physics.ucla.edu Annu. Rev. Fluid Mech. 2000.32:445-476. Downloaded from arjournals.annualreviews.org by NORTH CAROLINA STATE UNIVERSITY on 08/14/09. For personal use only. Key Words energy focusing, nonlinear dynamics, complexity, hydrodynamics gas bubble, continuum mechanics, shock shape instabilities, chemical hydrodynamics Abstract Sonoluminescence, the transduction of sound into light, is a phenomenon that pushes fluid mechanics beyond its limit. An initial state with long wavelength and low Mach number, such as is realized for a gas bubble driven by an audible sound field, spontaneously focuses the energy density so as to generate supersonic motion and a different phase of matter, from which are then emitted picosecond flashes of broad-band UV light. Although the most rational picture of sonoluminescence involves the creation of a ‘‘cold’’ dense plasma by an imploding shock wave, neither the imploding shock nor the plasma has been directly observed. Attempts to attack sonoluminescence from the perspective of continuum mechanics have led to interesting issues related to bubble shape oscillations, shock shape instabilities, and shock propagation through nonideal media, and chemical hydrodynamics. The...
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...satellites. Navigation system is made for aircraft, ships, ground vehicles, and for hand carrying by individuals. Surveying, telecommunications facilities, and mapping, tracking etc is another use of GPS. Also in this paper feasibility is, to introduce tracking system in Jinnah University, that monitor students’progress until they have seen an academic advising resources and helps students graduate on time. TABLE OF CONTENT ABSTRACT ii TABLE OF CONTENT iii LIST OF FIGURES v LIST OF TABLES vi ACKNOWLEDGEMENT vii Chapter 1INTRODUCTION 1 1.1 Background 1 1.2 What Is Tracking? 2 1.3 Tracking Devices 2 1.3.1 Mechanical Tracking Devices: 3 1.3.2 Optical Tracking Devices: 3 1.3.3 Electromagnetic Tracking Devices: 4 1.3.4 Acoustic Tracking Devices: 4 1.3.5 Motorcycle Travels Tracking Device...
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...Nanotechnology (first used the term nanotechnology by Richard Feynman, in 1959) can be defined as the manipulation of atoms and molecules at nano (one billionth) scale (1–100 nm) to produce devices, structures or systems having at least one novel or superior property. The materials having at least one dimension in the nano scale are called nanomaterials. 10-9 meter (1 nanometer) to 10-7 meter (100 nanometer) Human eye can visualize up to 20μm only 1μm = 10-6 m DNA= 2.5nm- 3nm Protein= ̴ 5 nm Virus= ̴ 150 nm Human hair= ̴ 5000 nm Properties of Nanomaterials 1. The surface area to volume ratio of the nanomaterials is relatively larger than that of bulk materials of the same mass. This increases the chemical reactivity and affects strength and electrical properties of the material. 2. The quantum confinement is observed at nanometer sizes that changes the optical, electronic and magnetic properties of the material. The band gap increases as the size of the material is reduced to nanometer range. I II III IV Reduction in particle size increase in its Surface area Now, material is NANO so surface area will big… HOW? Let us consider a sphere of radius ‘r’ Surface Area = 4 x π x r2 Volume = (4/3) x π x r3 ratio of SA to Vol = 3/r Thus, radius of sphere decreases, Surface area will increase Let us consider a cube of sides 1 m Area= 6 x side2 = 6 x 1m2 = 6m2 Now, cut the same cube into 8 pieces, then the SA will increases Area= 6 x (1/2)2 x 8 = 12m2 Similarly, the...
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...COPYRIGHT INFRINGEMENT. Copyright infringement is the use of work under copyright, infringing the copyright holder's exclusive rights, such as the right to reproduce, distribute, display or perform the copyrighted work, or to make derivative works, without permission from the copyright holder, which is typically a publisher or other business representing or assigned by the work's creator. COPYRIGHT INFRINGEMENT OCCURS WHEN THE COPYRIGHT OWNER'S RIGHTS ARE VIOLATED To fully understand copyright infringement, you must understand what rights you hold as a copyright holder. You own more than just the rights to reproduce the work filed with the US Copyright Office. An owner of a copyright owns a “bundle” of rights. Each of these rights can be sold or assigned separately. Copyright infringement occurs when one of those rights are used without the express consent of the copyright owner. The rights owned by the owner of a copyright include: The Right to Reproduce the Work. This is the right to reproduce, copy, duplicate or transcribe the work in any fixed form. Copyright infringement would occur if someone other than the copyright owner made a copy of the work and resold it. The Right to Derivative Works. This is the right to modify the work to create a new work. A new work that is based upon an existing work is a "derivative work." Copyright infringement would occur here if someone wrote a screenplay based on his favorite John Grisham book and sold or distributed the screenplay...
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...There is a strong need in industry for the development of the building blocks needed to develop their business cases. We develop these building blocks, some business cases, as well as methods for planning and control of the logistics in LNG synchromodal transportation networks. Activities / work packages I. LNG supply chains and synchromodal transport networks: providing an identification of markets and demand to serve, economic and sensitivity analyses, definition of logistical requirements and options for synchromodal transportation. II. Multi-modal inventory-routing problems: deriving tools to enable an efficient and effective supply to distribution points in the network through synchromodal operations. III. Direct delivery multi-modal transportation problems: deriving decision tools to enable efficient direct ship-to-ship refuelling at sea. Expected results: The main objective is to derive solution approaches to design LNG synchromodal transportation networks and tools for planning of transportation and replenishment operations to enable accessibility and efficient usage of this type of fuel for all modes of transport. Market identification, demand forecasts, economic analyses and business cases are intended outcomes of this study. The developed knowledge base on LNG-specific aspects in logistics can strengthen the development efforts of the sector in The Netherlands and can aid to position Dutch companies at the frontier of development of LNG networks in Europe. Innovativeness:...
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...ate Aptitude Test in Engineering GATE 2014 Brochure Table of Contents 1. Introduction .............................................................................................................1 2. About GATE 2014 ......................................................................................................1 2.1. Financial Assistance ............................................................................................................................ 1 2.2 Employment ............................................................................................................................................ 2 2.3 Administration ....................................................................................................................................... 2 3.1 Changes Introduced in GATE 2013 that will continue to remain in force for GATE 2014 .......................................................................................................................................................... 3 4.1 Eligibility for GATE 2014 ................................................................................................................... 4 4.2 GATE Papers ............................................................................................................................................ 5 4.3 Zone-Wise List of Cities in which GATE 2014 will be Held ................................................... 6 4.4 Zone-Wise List of Cities for 3rd...
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...more beautiful than it was before the building was built. - Frank Lloyd Wright A National Mission on Sustainable Habitat was launched to improve energy efficiency in buildings, manage solid wastes and modal shift to public transport. The Mission aims to promote energy efficiency as an integral part of urban planning and urban renewal through three initiatives: (i) The Energy Conservation Building Code, which addresses optimization of building energy demand; (ii) Recycling of material and Urban Waste Management with a special focus on producing power from waste, biochemical conversion, waste water use, sewage utilization and recycling options wherever possible and others; (iii) Better urban planning and modal shift to public transport to ensure efficient and convenient public transport. In addition, the Mission will address the need to adapt to future climate change by improving the resilience of infrastructure, community based disaster management, and measures for improving the warning system for extreme weather events. Capacity building would be an important component of this Mission. As part of the Mission for Sustainable Habitat and Green Code for Chandigarh, detailed action plan and guidelines have been prepared by the Ministry of Urban Development (MoUD) which could be City’s vision for sustainability. Chandigarh is a part of the Mission for solar energy to harness solar energy to meet the requirements of power. In addition to address the issue of mitigation of GHG emission...
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...PROJECT REPORT ON ‘STUDY OF EYEWATCH – MOBILE PHONE APPLICATION WITH SPECIAL REFERENCE TO WOMEN POPULATION AND ITS PROMOTIONAL STRATEGIES’ FOR INDIANEYE SECURITY PVT. LTD. [Submitted in partial fulfilment of the requirement for the PGDM- IB (2011-2013) course at FSM, New Delhi] Submitted By: Submitted To: Palak Thukral Prof. Neetu Jain Roll No.- 053027, IMG5 FORE School of Management FORE SCHOOL OF MANAGEMENT B-18, QUTAB INSTITUTIONAL AREA NEW DELHI CERTIFICATION This is to certify that Ms. Palak Thukral, Roll No.053027, IMG V has completed her corporate business project and submitted this report entitled ‘Study of Eyewatch- mobile phone application with special reference to women population and its promotional strategies’ for Indianeye Security Pvt. Ltd., towards partial fulfilment of her Post Graduate Diploma in Management – International Business (PGDM-IB)(2011-2013) course at FSM, New Delhi. This report is the result of her own work and to the best of my knowledge no part of it has earlier comprised any other report, monograph, dissertation or book. It was carried out under my overall supervision. Date: Place: Prof. Neetu Jain Internal Faculty Guide ACKNOWLEDGEMENT I take the opportunity to express the feeling of gratitude towards FORE School of Management for keeping project as part of Bachelor of Business Administration Course. ...
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...Offshore Employment Handbook The Time-Saving “Getting Started” Guide for Finding Offshore Oil, Gas & Energy Jobs WE STRONGLY RECOMMEND TO SAVE THIS DOCUMENT ONTO YOUR HARD DISC NOW!!! Offshore Employment Kit…2 How to Avoid Offshore Oil Job Scams..................................................................... 5 Living the Offshore Life ......................................................................................... 10 Glossary of oilfield terms ....................................................................................... 12 Frequently asked questions about the offshore industries ........................................ 14 Nature of the oil industry ....................................................................................... 16 working conditions ................................................................................................ 19 Employment .......................................................................................................... 20 Occupations in the Industry.................................................................................... 20 Training and Advancement..................................................................................... 22 Earnings ................................................................................................................ 23 Outlook ......................................................................................................
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...se A Global Uniform Standard for Secure Service Provision over 4G Infrastructures. 4G Networks:Generation of Wireless network Since their birth in the early seventeenth and all along their di_erent generations, mobile communication networks have crossed important evolutionary phases aiming to de_ne increasingly sophisticated technologies allowing the provision of seamless global roaming, quality of service, and high data rates. Today, numerous technologies are co-existing to provide a unifying set of services. The coming era of 4th generation networks is foreseeing a potential smooth merging of all these heterogeneous technologies. A 4G network is characterized by the integration and the convergence of all communication networks, which are intrinsically characterized by their diversity, their heterogeneity, and their dynamicity, into one network. The main challenges raised by this network are the guarantee of seamless global roaming, the provision of cost effective high data rates, the definition of efficient user-centric customized service models, and the optimization of the quality of service provision. 1.1:Generation: 1.1.1:Wireless first generation overview (1G) 1G (or 1-G) refers to the first generation of wireless telephone technology...
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...com/locate/comnet Molecular communication options for long range nanonetworks Lluís Parcerisa Giné *, Ian F. Akyildiz The Broadband Wireless Networking (BWN) Laboratory, School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA a r t i c l e i n f o a b s t r a c t Nanotechnology is an emerging field of science devoted to provide new opportunities in a vast range of areas. In this paper, different techniques are proposed to enable the long range interconnection of nano-machines, deployed over distances from a few centimeters up to several meters. Long range nano-communications will enable the development of applications that could not be implemented using other techniques. The usage of both short-range nano techniques and long range micro techniques are not practical or are unfeasible for a huge application scope. Biologically inspired research provides promising features to long range communication, such as very low power consumption and biocompatibility. In this paper, several bio-inspired techniques are discussed following a twofold taxonomy divided according to whether a fixed physical link is required for signal propagation or not, i.e., either wired or wireless communication. In the first group, pheromones, spores, pollen and light transduction are discussed. In the second group, neuron-based communication techniques and capillaries flow circuit are explored. All proposed techniques offer a good framework for long-range molecular communication...
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...Student Life @UNSW Global Education Global Networks Global Opportunities contents 3 sydney People ___________________________________________________________________________ 3 Places of Interest __________________________________________________________________ 4 Multicultural sydney ________________________________________________________________ 5 suburbs Around UnsW_____________________________________________________________ 6 Climate __________________________________________________________________________ 18 World Times______________________________________________________________________ 18 21 AboUT UnsW UnsW – The organisation _________________________________________________________ 22 UnsW Campuses_________________________________________________________________ 24 University Glossary _______________________________________________________________ 26 Faculty of Arts and social sciences _________________________________________________ 28 Faculty of the built environment_____________________________________________________ 30 Australian school of business ______________________________________________________ 32 College of Fine Arts (CoFA) ________________________________________________________ 34 Faculty of engineering ____________________________________________________________ 36 Faculty of Law ____________________________________________________________________ 38 Faculty of Medicine _______________________________________________________________ 40...
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