סמינר מחלקתי - המחלקה למדע והנדסה של חומרים - Meet the Faculty Seminar

21 בינואר 2015, 16:00 - 17:00 
חדר 101, בניין כיתות הנדסה  

2D Atomic-Films: How do they grow?

Dr. Ariel Ismach

סמינר מחלקתי של המחלקה למדע והנדסה של חומרים - Meet the Faculty Seminar

Electrochemically deposited calcium phosphate coatings for dental and orthopedic implants

From fundamental studies to the clinics

 

Prof. Noam Eliaz

Head, Department of Materials Science and Engineering, Tel-Aviv University

Chief Scientist, SGS Swiss-Dental Implants

12 בנובמבר 2014, 16:00 
חדר 101, בניין כיתות  

פותחים שנה בפקולטה להנדסה - רוק בצהריים

פותחים שנה בפקולטה עם הרבה בירות נקניקיות ברד 
והופעה של 'להקה רנדומלית' - סתם עוד להקה רנדומלית

06 בנובמבר 2014, 12:00 - 13:00 
הפקולטה להנדסה  
פותחים שנה בפקולטה להנדסה - רוק בצהריים

EE Seminar: George Kour

~~Electrical Engineering-Systems Department

*** SEMINAR ***

George Kour
(M.Sc. student under the supervision of Prof. Dana Ron and Dr. Raid Saabni)

on the subject:

Real-time Segmentation and Recognition of On-line Handwritten Arabic Script

Despite the long standing belief that digital computers will challenge the future of handwriting, pens and papers remain commonly used means for communication and recording of information in daily life. In addition to the growing use of keyboard-less devices such as smart-phones and tablets, which are too small to have a convenient keyboard, handwriting recognition is receiving increasing attention in the last decades.
Correct and efficient recognition of handwritten Arabic text is a challenging problem due to the cursive and unconstrained nature of the Arabic script. While real-time performance is necessary in applications involving on-line handwriting recognition, conventional approaches usually wait until the entire curve is traced out before starting the analysis, inevitably causing delays in the recognition process. This deferment restricts on-line recognition techniques from achieving high responsiveness demands expected from such systems, and prevents implementing advanced features of input typing, such as automatic word completion and real-time automatic spelling correction.
This work presents a real-time approach for segmenting and recognizing handwritten on-line Arabic script. We demonstrate the feasibility of segmenting Arabic handwritten text during the course of writing. The proposed segmentation approach is a recognition-based method that operates in the stroke level and nominates candidate segmentation points based on morphological features. Using a fast Arabic character classifier, the system attaches a score to the sub-strokes induced by the candidate points, which captures the likelihood of the sub-stroke to represent a letter.
A candidate filtering followed by a segmentation selection process are activated when the entire stroke is available.
A nearest neighbors based character classifier that employs a linear-time embedding of the Earth Mover's Distance metric to a norm space is presented. The transformation of the feature space vectors into the wavelet coefficient space, facilitates accurate similarity measure and sub-linear search methods. We show that the resulting character segmentation and classification information can be used to significantly reduce the potential dictionary size and accelerate a holistic recognition process.

03 בדצמבר 2014, 15:00 
בניין כיתות-חשמל, חדר 011  

סמינר מחלקתי Tamir Brosh

22 בדצמבר 2014, 15:00 
וולפסון 206  
0
סמינר מחלקתי Tamir Brosh

 

 

 

 

SCHOOL OF MECHANICAL ENGINEERING SEMINAR
Monday, December 22, 2014 at 15:00
Wolfson Building of Mechanical Engineering, Room 206

 

Direct Numerical Simulations (DNS) Investigation of Turbulent Coal Combustion

 

Dr. Tamir Brosh

Mechanical and Systems Engineering, Newcastle University, Newcastle upon Tyne, UK

 

Coal combustion is responsible for about 40% of the world’s power requirements. This process accounts for about 24% of the world greenhouse gases generation. While many resources are invested in the improvement of cleaner, alternative, energy sources, the increasing demand for power generation means that the coal power plant will continue to play a major role in the world’s power production for the foreseeable future. Thus, improved fundamental understanding of coal particle-laden turbulent reacting flows is important for optimizing the coal combustion process and designing new generation energy-efficient and environment-friendly boilers and furnaces.

Recent advances in high performance computing have made it possible to obtain fundamental physical information regarding coal combustion based on numerical simulations, which is either difficult or impossible to obtain experimentally in the hostile furnace environment. Up until now most computational simulations of turbulent coal combustion have been carried out using Reynolds Averaged Navier Stokes (RANS) and Large Eddy Simulations (LES). However, the fidelity of RANS and LES simulations strongly depends on the accuracy of the turbulence and combustion models and are often subject to strong assumptions involved in the development of these models.

The current research focuses on the generation and analysis of data from Direct Numerical Simulations (DNS) of the carrier gas phase coupled with Lagrangian coal particles without making too restrictive physical approximations regarding the underlying reacting turbulent flow of the gas phase in order to obtain fundamental understanding of the coal combustion process.

 

Short Bio

Dr. Tamir Brosh obtained B.Sc. (2007) in Mechanical Engineering from Ben-Gurion University of the Negev where he also completed is M.Sc. (2009) and Ph.D. (2012). During his M.Sc. and Ph.D. Dr Brosh worked on Discrete Element Modelling of particle comminution in jet-mills. After completing his Ph.D., Dr Brosh took a postdoctoral research associate position in the School of Mechanical and Systems Engineering of Newcastle University UK where he worked on turbulent coal combustion using Direct Numerical Simulations. Dr Brosh is currently a visiting researcher at Newcastle University where he continues to work on coal combustion, and also contributing to the work on droplet combustion and flame wall interactions

הנדסת חשמל - סמינר - שלומי קושצ'י

~~Electrical Engineering-Systems Department

*** SEMINAR ***

Shlomi Kushchi
(M.Sc. student under the supervision of Prof. Shlomo Weiss)

on the subject:

Cloud Computing Through In-Flight WiFi Limited Bandwidth Airplane Communication

  High bandwidth internet usage is a known problem while travelling. For instance when flying on airplanes. The problem arises from the obvious reason, the plane is up in the air where there are no antennas. Moreover, while flying from one continent to the other the airplane is flying over oceans where no infrastructure is available. Communication is available, but the bandwidth is limited. That means that under that current infrastructure it is very difficult to provide a good connection to the passengers. That also reflects on the pricing.
  We suggest a novel approach to deploy virtual desktops on such platforms. In this approach the graphical part of the application is separated from the remaining parts. The applications execute in the cloud and the GUI is displayed on the client side. The application is not affected by the remote execution and behaves as if it executes on a private computer.
  Our approach requires almost no changes in the transition from a desktop application to a cloud application. Separating the GUI part of the application is done by intercepting all the applications GUI function calls and transmitting them to the client. With a dedicated environment at the client side the function calls are executed properly. In the proposed approach the separation of the graphics part, which runs on the client, and the remainder of the application, which executes in the cloud, is done with minimal changes in the application and results in competitive bandwidth relative to familiar protocols. In this paper we will demonstrate this concept on a Windows based clients, but the same concepts can be implemented on other platforms as well.

12 בנובמבר 2014, 15:30 
בניין כיתות חשמל, חדר 011  

סמינר מחלקתי Yuval Garson

10 בדצמבר 2014, 15:00 
וולפסון 206  
0
סמינר מחלקתי Yuval Garson

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