Engineering Commons^™

A Generalized Neuron Based Adaptive Power System Stabilizer For Multimachine Environment, D. K. Chaturvedi, O. P. Malik

D. K. Chaturvedi Dr.

Artificial neural networks trained as intelligent controllers can easily accommodate the non-linearities and time dependencies of non-linear, dynamic systems. However, they require large training time and large number of neurons to deal with complex problems. Taking benefit of the characteristics of a generalized neuron (GN), that requires much smaller training data and shorter training time, a generalized neuron based adaptive power system stabilizer (GNAPSS) is proposed. It consists of a GN as an predictor, that predicts the plant dynamics, and a GN as a controller to damp low frequency oscillations. Results show that the proposed GNAPSS can provide a consistently …

Approches Orientées Services Web De L'Ihm De Supervision : Nouvelles Solutions Technologiques Pour Les Ingénieurs Et Nouvelles Problématiques Pour Les Ergonomes ?, Djilali Idoughi, Christophe Kolski

Professor Djilali IDOUGHI

RESUME Dans cet article, nous considérons l’IHM de supervision dans un contexte technologique nouveau et en constante évolution, lequel est caractérisé par des aspects impor-tants comme la mobilité et la coopération entre acteurs d’une part, et l’inter connectivité, l’interopérabilité et l’hétérogénéité des systèmes industriels utilisés d’autre part. De nouvelles solutions technologiques « attrayan-tes » pour les ingénieurs devraient conduire à de nouvel-les problématiques pour les ergonomes.

Heavy Duty Fleet And Transportation In Iran The Past, The Present Condition, The Future Perspectives And Its Interaction With Economy, Nader Ale Ebrahim, Arash Golnam

Nader Ale Ebrahim

Since the ancient times Iran has always played a significant role in the Transportation Industry due to its strategic position in the silk road that connected Asia to Europe and Middle East to .Ancient Iranians are believed to be the pioneers of land transportation in the world and transportation has always been considered as one of the most ancient and historical Industries in Iran . Nowadays in the third millennium Transportation Industry experts believe that Iran is once more located in a strategic and geopolitical position in the world in which , according to the economic analyses, the Transportation Industry …

Emisja Zanieczyszczeń Powietrza Z Procesu Grafityzacji Wyrobów Drobnych, Marian Mazur, Robert Oleniacz, Marek Bogacki, Przemysław Szczygłowski

Robert Oleniacz

The paper presents the research results of the air pollutant emissions from the graphitising process of fine carbon products in the Acheson furnace (discharge capacity 5,5 Mg). Research was performed for two kinds of raw material inputs (based on petroleum coke and pitch coke). Approximately 40-hours measurement series were carried out for each material including mainly such substances like carbon monoxide, hydrocarbons, nitrogen oxides, sulphur dioxide, hydrogen sulphide, carbon disulphide, ammonia, benzene, toluene, xylenes, total dust, tar substances and polycyclic aromatic hydrocarbons. Both average and maximum concentrations and mass streams in the flue gases and average emission factors were presented …

Tribo-Surface Characteristics Of Al-B4c And Al-Sic Composites Worn Under Different Contact Pressures

A.S. Md Abdul Haseeb

Tribo-surface characteristics of two aluminium metal matrix composites (Al-MMC) of compositions Al-13 vol%B4C and Al-13 vol%SiC sliding against a commercial phenolic brake pad have been investigated under dry conditions. The wear tests were carried out using a pin-on-disc type apparatus at a linear speed of 1.62 m s-1 under contact pressures ranging from 0.75 to 3.00 MPa. The coefficient of friction was recorded on line. Wear rates were calculated from mass loss measurements. Scanning electron microscope equipped with energy dispersive X-ray spectroscopy was used to examine the tribo-surface. It is found that wear rate of both composites increases with increasing …

Inventions On Ldap Data Storage- A Study Based On Us Patents, Umakant Mishra

Umakant Mishra

Lightweight Directory Access Protocol (LDAP) is an IETF open standard to provide directory services in the network. LDAP was initially developed at the University of Michigan with an objective to include most of the features of X.500 directory structure, while eliminating the burdens and difficulties of the same.

As LDAP does not provide any specification on the data storage, different venders can implement different mechanism for data storage as found suitable to the specific vender or environment. Although underlying data storage system between different LDAP servers can differ, this disparity does not affect the functionality or interaction of LDAP clients. …

A Short History Of Mineral Processing, Fathi Habashi

Fathi Habashi

Inventions On Ldap Security- A Triz Based Analysis, Umakant Mishra

Umakant Mishra

The specifications of LDAP v.3 provide facilities for simple authentication using a cleartext password as well as any SASL mechanism.SASL allows for integrity and privacy services to be negotiated (RFC 2251, www.ietf.org/rfc/rfc2251.txt). Use of cleartext password is strongly discouraged where the underlying transport service cannot guarantee confidentiality and may result in disclosure of the password to unauthorized parties. The protocol allows other security mechanisms like SASL to be implemented in LDAP. The protocol also permits that the server can return its credentials to the client, if it chooses to do so. This article is a TRIZ based study on patents …

Analysis Of Opportunities And Challenges For R&D Management And The Role Of The R&D Society For Its Improvement – A Case Study In Iran, Reza R. Tavakkoli-Moghaddam, Nader Ale Ebrahim, Arash Golnam, M. Vasei, Ali Ghazizadeh-Moghaddam

Nader Ale Ebrahim

Research and Development (R&D) management in Iran is faced to many barriers and obstacles, in which R&D units are considered as the basic core of the product development and innovation. Due to structural shortcomings, a great number of organizations and industries have not been able to find their actual status. There are about different 1141 R&D units with a dispersion pattern in Iran. This paper considers and analyzes the R&D case study in one of the provinces located in the north part of Iran in order to enhance the potential R&D activities in respect with the industrialized areas and zones. …

Inventions On Ldap- A Study Based On Us Patents, Umakant Mishra

Umakant Mishra

Lightweight Directory Access Protocol (LDAP) is an IETF open standard to provide directory services in the network. LDAP is based on X.500 directory architecture, intended to provide directory services in Internet compatible environments. LDAP is used to provide directory services to applications ranging from e-mail systems to distributed system management tools. LDAP is becoming more and more popular with its wider usage in the Internet.

This report on LDAP is based on a study of 60 selected patents on LDAP from US patent database. The objective of this article is to present the distribution of patents according to different features …

Fabrication Of Pdms (Polydimethylsiloxane) Microlens And Diffuser Using Replica Molding, Fang-Tzu Chuang

Fang-Tzu Chuang

This paper reports the fabrication method of PDMS (polydimethylsiloxane) microlens array based on the replica molding process, casting a liquid PDMS into concave microlens molds. Concave microlens molds were fabricated through spin-coating processes suspended a liquid PMMA film on the micro-drilled hole, leading to the formation of the special curvature. Then, PDMS microlens arrays and diffusers were fabricated by replica molding and discussed in this study. The fabricated microlenses have both good surface roughness and high-quality optical properties. Therefore, diffusers were fabricated by two-step replica molding. A high-intensity He–Ne laser beam was uniformly spread through diffusers. Experimental tests demonstrated that …

Knowledge Management In Iran, Nader Ale Ebrahim, Ali Ghazizadeh, Arash Golnam

Nader Ale Ebrahim

In the highly competitive global market, only organizations survive in which, knowledge has replaced labor and natural resources as the key source of sustainable growth and development. The organizations that have learnt doing things differently and doing different things. In such organizations knowledge and learning are widely considered as sustainable sources of competitive advantage. In this paper first we take a look at the history and the pioneers of knowledge management in Iran analyzing the evolutionary trend of knowledge management and its current condition in Iran. Then we trace the emphasis put on knowledge management in the fourth economic, social …

Pomiary Wielkości Cząstek W Powietrzu W Czasie Rzeczywistym, Marek Bogacki, Robert Oleniacz, Marian Mazur, Stanisław Kamiński

Robert Oleniacz

The paper presents the new method for measurements of air particulate size distribution in real time using Kamika Infrared Particulate Sizer type P (IPS-P) with isokinetic air sampler. The device makes it possible to classify (sort) air particulates according to size into 256 granularity classes from about 0.4 µm up to 300 µm. Tests of the IPS-P prototype were conducted in Warsaw at the turn of 2005/2006 and some measurement results were presented in the work.

English title: Measurements of the particulate size distribution in the air in real-time.

Pre-Disaster Planning And Mitigation And Its Impact On Comprehensive Emergency Management And The Nation: Pre-Disaster Mitigation (Pdm) Program And The Population Protected, Thomas Lyons Carr Iii

Thomas Lyons (Thom) Carr III Appl.Sc., CEM

A Project for a Professional Degree submitted to The Faculty of School of Engineering and Applied Science of The George Washington University in partial fulfillment of the requirements for the degree of Applied Scientist of Engineering Management May 21, 2006

On October 10, 2000, The Disaster Mitigation Act of 2000 (DMA 2000 or DMA 2K) (Public Law 106-390) was enacted, amending the Robert T. Stafford Relief and Emergency Assistance Act and established new requirements for the national for hazard mitigation planning. States, Tribes, territories, and local governments now must have an approved mitigation plan in place prior to receiving certain …

Diode Quad Is Foundation For Pin Diode Attenuator, Chin-Leong Lim

Chin-Leong Lim

Voltage-variable attenuators (VVAs) enable gain adjustment in a wide range of applications, including in cable-television (CATV), satellite-television (SATV) systems, and even test equipment and measurement systems. The PI VVA configuration using PIN diodes is ubiquitous in CATV and SATV systems owing to its low part count, small size, constant impedance, high linearity, and multi-decade bandwidth. Presently, there is a great pressure to miniaturize this VVA in order to shrink end-product size. To miniaturize this class of VVAs, we integrated four diodes into a five-pin, leadfree SOT-25 surface mount package. This paper describes the prototype VVA's design, fabrication and experimental results. …

Homeland Security: Engaging The Frontlines - Symposium Proceedings, George H. Baker, Cheryl J. Elliott

George H Baker

The rise of the American homeland security endeavor under the leadership of the new Department of Homeland Security has been heralded by several major national strategy documents. These documents have served to organize efforts at top levels within the government and industry. However, the national strategy guidance is not getting to many organizations and people at the grass-roots level who can make the most difference in preventing attacks, protecting systems, and recovering from catastrophic events, viz. the general citizenry, private infrastructure owners, and local governments. To better understand grass-roots issues and solutions, James Madison University, in cooperation with the Federal …

Biochemical Characterization Of The Major Sorghum Grain Peroxidase, Mamoudou H. Dicko, Harry Gruppen, Riet Hilhorst, Alphons G. J. Voragen, Willen W. H. Van Berkel

Pr. Mamoudou H. DICKO, PhD

Velocity Imaging For The Liquid–Gas Interface In The Near Field Of An Atomizing Spray: Proof Of Concept, David L. Sedarsky, Megan E. Paciaroni, Mark A. Linne, James R. Gord, Terrence R. Meyer

Terrence R Meyer

We describe adaptation of ballistic imaging for the liquid core of an atomizing spray. To describe unambiguously the forces that act to break apart the liquid core in a spray, one must directly measure the force vectors themselves. It would be invaluable, therefore, to obtain velocity and acceleration data at the liquid-gas interface. We employ double-image ballistic imaging to extract velocity information through the application of image analysis algorithms. This method is shown to be effective for liquid phase droplet features within the resolution limit of the imaging system. In light of these results, it is clear that a three- …

Using Triz To Design The Future Keyboard, Umakant Mishra

Umakant Mishra

A keyboard is the most common and widely used input device for a computer. Using the keyboard is often vital to interact with a computer. There are several aspects of a keyboard such as size, key layout, convenience and ergonomic features etc., which are continuously under improvement by keyboard designers and manufacturers. TRIZ is an efficient methodology in product designing. Using IFR and Trends we can well predict the directions of the future keyboards and using Contradictions and Principles we can overcome the current limitations. This article analyses the critical features of a keyboard, does a functional analysis, derives the …

The History Of Element 43 - Technetium, Fathi Habashi

Fathi Habashi

Coupling Between Lysozyme And Trehalose Dynamics: Microscopic Insights From Molecular-Dynamics Simulations, Taner E. Dirama, Joseph E. Curtis, Gustavo A. Carri, Alexei P. Sokolov

Gustavo A. Carri

We have carried out molecular-dynamics simulations on fully flexible all-atom models of the protein lysozyme immersed in trehalose, an effective biopreservative, with the purpose of exploring the nature and extent of the dynamical coupling between them. Our study shows a strong coupling over a wide range of temperatures. We found that the onset of anharmonic behavior was dictated by changes in the dynamics and relaxation processes in the trehalose glass. The physical origin of protein-trehalose coupling was traced to the hydrogen bonds formed at the interface between the protein and the solvent. Moreover, protein-solvent hydrogen bonding was found to control …

Relationship Between Vertical Shear Rate And Kinetic Energy Dissipation Rate In Stably Stratified Flows, Stephen De Bruyn Kops, D. Hebert

Stephen de Bruyn Kops

High resolution direct numerical simulations of strongly stratified turbulence are analyzed in order to investigate the relationship between vertical shearing of horizontal motions and the dissipation rate of kinetic energy. The relative magnitude of each component of the dissipation rate is examined as a function of the Reynolds number and of the buoyancy Reynolds number. From the simulation results, in conjunction with published laboratory results, it is concluded that (1) the simulation results are consistent with the laboratory data but span a much larger range of buoyancy Reynolds number, (2) the ratio of the square of the vertical shear rate …

Thermoeconomics Of Seasonal Latent Heat Storage System, Yasar Demirel, H.H Ozturk

YASAR DEMIREL

A simple thermoeconomic analysis is performed for a seasonal latent heat storage system for heating a greenhouse. The system consists of three units that are a set of 18 packed-bed solar air heaters, a latent heat storage tank with 6000 kg of technical grade paraffin wax as phase-changing material, and a greenhouse of 180m2. The cost rate balance for the output of a unit is used to estimate the specific cost of exergy for a yearly operation. Based on the cost rate of exergy, fixed capital investment, operating cost, and economic data, approximate cash-flow diagrams have been prepared. The systems …

Melt Dispersion Mechanism For Fast Reaction Of Nanothermites, Valery I. Levitas, Blaine W. Asay, Steven F. Son, Michelle Pantoya

Steven F. Son

An unexpected mechanism for fast oxidation of Alnanoparticles covered by a thin oxide shell (OS) is proposed. The volume change due to melting of Al induces pressures of 0.1–4GPa and causes spallation of the OS. A subsequent unloading wave creates high tensile pressures resulting in dispersion of liquid Al clusters, oxidation of which is not limited by diffusion (in contrast to traditional mechanisms). Physical parameters controlling this process are determined. Methods to promote this melt dispersion mechanism, and consequently, improve efficiency of energetic nanothermites are discussed.

Multisensor Track-To-Track Association For Tracks With Dependent Errors, Yaakov Bar-Shalom, Huimin Chen

Huimin Chen

No abstract provided.

Catalyzing Mass Production Of Solar Photovoltaic Cells Using University Driven Green Purchasing, Joshua M. Pearce

Joshua M. Pearce

Energy Service Companies As A Component Of A Comprehensive University Sustainability Strategy, Joshua M. Pearce, Laural L. Miller

Joshua M. Pearce

An Enhancement Of Decimation Process Using Fast Cascaded Integrator Comb (Cic), Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

An Overview Of The Decimation Process And Its Vlsi Implementation, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

An Improved Recursive And Non-Recursive Comb Filter For Dsp Applications, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.