Analysis of Ancient Near Eastern Clay Tablets using p-ED-XRF and a Portable Petrographic Laboratory

13 במאי 2015, 16:00 - 17:00 
הפקולטה להנדסה  

Analysis of Ancient Near Eastern Clay Tablets using p-ED-XRF
and a Portable Petrographic Laboratory

Prof. Yuval Goren

Wednesday, May 13th, 16:00
Room 103, Engineering Class (Kitot) Building

Atomic Scale Simulation in the Service of Nuclear Materials Professor Robin Grimes Chief Scientific Advisor, Foreign and Commonwealth Office, UK Government Professor of Materials, Imperial College, London

Atomic Scale Simulation in the Service of Nuclear Materials

Professor Robin Grimes

Chief Scientific Advisor, Foreign and Commonwealth Office, UK Government

Professor of Materials, Imperial College, London

Tuesday, April 28th, 12:00

28 באפריל 2015, 12:00 
 

הכנס השנתי של ה- Industrial Affiliates Program

תמונות מהכנס ניתן לראות באתר הפייסבוק של IAP

14 במאי 2015, 9:15 
 
הכנס השנתי של ה- Industrial Affiliates Program

הכנס השנתי של ה- Industrial Affiliates Program

הפקולטה להנדסה, אוניברסיטת תל-אביב

יום ה' ה 14- למאי 2015 | בניין פורטר למדעי הסביבה, אוניברסיטת תל אביב

מושב פתיחה: משולב עם אירוע חבר הנאמנים של אוניברסיטת תל אביב

09:15 התכנסות
09:40 פרופ' יוסי רוזנוקס, דקאן הפקולטה להנדסה
09:45 תא"ל )מיל.( דר' דניאל גולד: "כיפת ברזל ומעבר- עיצוב הדור הבא של
החדשנות והטכנולוגיה"
10:10 דר' בריאן רוזן, סגל אקדמי בכיר, המחלקה למדע והנדסה של חומרים : "הכנת
דלקים נוזליים ממתאן שבים התיכון"
10:25 ד"ר הדס ממן, סגל אקדמי בכיר, ביה"ס להנדסה מכנית: "טיפול בשפכים ובמים"
10:40 פרופ' אלכסנדר ברונשטיין, סגל אקדמי בכיר, ביה"ס להנדסת חשמל:
"מימדים חדשים של המדיה"
10:55 דב מורן: "יזמות למיטיבי לכת"

מושב עיקרי: הכנס השנתי של ה- IAP

11:20 התכנסות, קפה, עוגות וטכנולוגיה
12:00 ברכות: ד"ר שלמה מרקל, סגן נשיא ברודקום העולמית, יו"ר רמות
אוניברסיטת תל אביב
12:10 פרופ' דוד מנדלוביץ, יו"ר ה- IAP
12:20 פרופ' יוסי רוזנוקס, דקאן הפקולטה להנדסה: "לטובת עולם טוב יותר"
12:30 פרופ' אבישי ברוורמן, לשעבר יו"ר ועדת הכלכלה של הכנסת: "מכלכלת
אקזיט לכלכלה צודקת בת קיימא"
12:50 מקסין פסברג, מנכ"ל אינטל ישראל וסגנית נשיא TMG : "יחס הגומלין בין
האקדמיה והתעשייה"
13:10 אריאל מייסלוס, יזם ומנכ"ל סטרטוסקייל ישראל: "יזמות סדרתית"
13:30 עו"ד דוד מירצ'ין: ”כיצד להוציא IP מהפקולטה ולהשאיר את כולם מרוצים?"
13:50 ארוחת-צהריים
 

7.5.15

07 במאי 2015, 15:00 
011 Kitot  
7.5.15

 

EE Seminar: No robot is an island, no team an archipelago

~~(The talk will be given in English)

Prof. Gal Kaminka
Bar Ilan University
Wednesday, May 20th, 2015
15:15 - 16:15
Room 011, Kitot Bldg., Faculty of Engineering
No robot is an island, no team an archipelago
Abstract
We live in opportune times. The centuries-old dreams of creating intelligent, programmable automatons—robots—are becoming reality. Recent years are seeing dramatically growing interest in robotics, by scientists and practitioners alike. Robots—from the molecular scale to tank-size—seem to appear everywhere: in production lines, in the battlefield, in hospitals, in warehouses, in homes, in fields; on the ground, on water, and in the air.

In this talk, I argue that to accelerate and maximize the impact of robotics, robots should operate in teams, rather than in isolation. Moreover, I argue that effective robot teams must dynamically adjust their teamwork, instead of relying on rigid pre-planned coordination schemes. This is not a mere philosophical argument: I will present algorithms, data structures, and computational techniques for facilitating such teamwork, and discuss analytical guarantees and empirical results that demonstrate the effectiveness of these contributions in a variety of cooperative robot teams, from the molecular to the vehicle scale; robot teams which move in formations, explore urban areas, play soccer, and patrol Israel's borders.

As a final note, I will also argue that what is true for robots, is true for roboticists. Accelerating the impact of robotics requires leaving behind rigid disciplinary bounds and pre-established division of labor within academic circles and in practice. Instead, roboticists should embrace multi-discplinary collaborations, opening up to biology, psychology, economics, and sociology as sources of inspiration and targets of influence.

About the speaker:
Gal A. Kaminka is a professor at the computer science department and the brain sciences research center, at Bar Ilan University (Israel), where he chairs the Bar Ilan University Robotics Consortium, and his MAVERICK research group. His research expertise includes multi-agent and multi-robot systems, teamwork and coordination, behavior and plan recognition, and modeling social behavior. He received his PhD from the University of Southern California (2000), spent time as a post-doctorate fellow at Carnegie Mellon University (until 2002), and a year as a Radcliffe Fellow at Harvard University's Radcliffe Institute for Advanced Study (2012).  Prof. Kaminka was awarded an IBM faculty award and top places at international robotics competitions. He served as the program chair of the 2008 Israeli Conference on Robotics, and the program co-chair of the 2010 Int'l Joint Conference on Autonomous Agents and Multi-Agent Systems (AAMAS). He has served on the international executive bodies of IFAAMAS (International Foundation of Autonomous Agents and Multi-Agent Systems), the RoboCup Federation, and AAAI (Association for Advancement of Artificial Intelligence). He is the author or co-author of over 150 publications and 7 patents. He is the 2013 recipient of the Israeli national Landau Prize in exact sciences.

 

20 במאי 2015, 15:15 
חדר 011, בניין כיתות-חשמל  

EE Seminar: Matching image content with bounded distortion

~~(The talk will be given in English)

Prof. Ronen Basri
Weizmann Institute
Monday, May 11th, 2015
15:00 - 16:00
Room 011, Kitot Bldg., Faculty of Engineering
Matching image content with bounded distortion
Abstract
Modeling deformations is important for various applications in computer vision, graphics and geometry processing. In this talk I will describe our recent progress in modeling bounded distortion transformations, locally injective maps whose differentials' conformal distortion is bounded. Specifically, I will introduce a convex framework for solving optimization problems over matrices that involve functionals and constraints expressed in terms of the extremal singular values of matrices. Using this framework we can design algorithms for solving a number of challenging problems. In particular, I will present algorithms for finding corresponding points between images related by a non-rigid deformation, non-rigid registration of shape models and computing extremal quasi-conformal maps.

This is joint work with Yaron Lipman, Stav Yagev, Roi Poranne, David Jacobs, Shahar Kovalsky, Noam Aigerman, Meirav Galun, Tal Amir, and Angjoo Kanazawa.

11 במאי 2015, 15:00 
חדר 011, בניין כיתות-חשמל  

סמינר

EE Seminar: Side-channel attacks on mobile devices

~~(The talk will be given in English)

Yan Michalevsky
Stanford University
Wednesday, May 13th, 2015
15:00 - 16:00
Room 011, Kitot Bldg., Faculty of Engineering
Side-channel attacks on mobile devices
Abstract
Modern smartphones are loaded with sensors that measure a lot of information about the environment: a compass, an accelerometer, a GPS receiver, a microphone, an ampere-meter, etc. Some sensors, like the GPS receiver and microphone, are protected, as applications must request special permissions to read data from them. Other sensors, like the accelerometer and ampere-meter, are considered innocuous and can be read by any application without special permissions.
In a sequence of recent papers we show that smartphone sensors can be abused: malicious applications can use innocuous sensors for unintended purposes.  We give three illustrative examples: access to the accelerometer results in a device fingerprint that is strongly bound to the phone, access to the gyro sensor enables an application without privileges to eavesdrop on acoustic signals, including speech, in the vicinity of the phone. Access to the ampere-meter reveals information about the phone’s past and present locations.
We suggest defenses specific to these particular attacks, as well as more general principles for designing a more secure ecosystem of smart devices.

Bio
Yan is a PhD student at Stanford University, advised by Dan Boneh. He recently focused on mobile security and privacy. His works on side-channel attacks on mobile devices were presented at Usenix and BlackHat security conferences.
Previously, he held several positions in industry as a team manager, independent contractor, and software architect and developer, mostly in the fields of networks, embedded software and security. He holds a BSc in Electrical Engineering from the Technion, and an MS in Electrical Engineering from Stanford University.

 

13 במאי 2015, 15:00 
חדר 011, בניין כיתות-חשמל  

30.4.15

30 באפריל 2015, 11:00 
Kitot 011  
30.4.15

You are invited to attend a lecture

By

 

Lev Merensky

PhD student under the supervision of Prof. Doron Shmilovitz1 and Dr. Amit S. Kesar2

  1. School of Electrical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
  2. Applied Physics Division, Soreq Nuclear Research Center, Yavne, Israel

Nanosecond and Sub-nanosecond

Pulsed Power Circuits

Drift step recovery diodes (DSRDs) and silicon avalanche shaper (SAS) diodes are semiconductor devices that can be combined to generate high-voltage pulses in the sub-nanosecond regime. The circuit topology that drives the DSRD and the SAS plays a major role in the performance of a pulsed power generator. A comprehensive study that was conducted to improve the performance of sub-nanosecond pulsed power generators is presented. The study achieved three major objectives: The first objective was to quantify the efficiency of the pulsed power generator and map its major loss mechanisms. The second objective was to enhance the circuit performance by driving the DSRD with a preliminary DSRD compression stage. The final objective was to experimentally determine the conditions for driving the SAS.

 

The efficiency study combined experiments and simulations to characterize the conduction losses in the switching devices.  The major achievement of the study was the development of a trade-off map for a case-study circuit that allows for the selection of the desired compromise between efficiency and pulse performance parameters. The case-study circuit produced up to 2.2 kV at a pulse repetition frequency (PRF) of up to 1 MHz. This high-PRF capability provides a significant motivation for the effort to improve efficiency.

 

With regard to the second objective, we report the enhanced performance that was achieved by using a cascaded-compression method to produce a high-voltage nanosecond pulse. The pulse that was driven by this method was sharpened by a fast avalanche diode. A 6-kV, 130-ps-rise-time circuit, with a rise rate exceeding 40 kV/ns, is presented. The presented topology demonstrates two novel advancements in the design of pulse-forming circuits. The first development is the timing together, and combining the outputs of two preliminary nanosecond compression stages. The second achievement is the successful cascaded driving of a DSRD by the preliminary DSRD-based compression stage.

 

In pursuit of the third objective, a dedicated circuit was used to drive the SAS diode over a wide range of peak voltages and rise times. The study revealed the limits on the minimal conditions required to achieve an avalanche effect that can sharpen the DSRD pulse from the nanosecond scale to the 100-ps scale. Additionally, the study investigated the limits on the minimal time between two pulses, which, in turn, imply physical limits on the PRF.

 

 

 

Thursday, April 30, 2015, at 11:00

Room 011, Kitot building

 

 

29.4.15

29 באפריל 2015, 12:00 
Kitot 011  
29.4.15

You are invited to attend a lecture

By

 

Oshrit Hakoon

 

(MSc. student under the supervision of Prof. Avraham Katzir and Dr. Yoav Sintov)

School of Electrical Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel

 

 

Samarium doped silica fiber as a pump source protection and as a saturable absorber in all-fiber-self-Q-switched laser

 

Over the last decade, there has been a remarkable increase in powers produced by fiber lasers, steeper than that shown by their bulk solid-state counterparts. These increased power levels are leading to a rapid penetration of fiber systems into applications formerly dominated by other lasers. In most fiber lasers, the lasing medium is a rare-earth (RE) doped silica fiber. In the development and fabrication process of such silica fibers, the spectral properties of the RE doped glass can be modified by using different co-dopants.

At the center of my thesis stands the analysis and development of a new Samarium (Sm) doped silica fiber designed to achieve two purposes:

Our first goal was to protect a 1018nm pump fiber laser source in a high power fiber laser operating at 1070-1080nm, from back reflections and stray-light. Samarium (Sm), which exhibits an extinction ratio of ~15 between the two relevant wavelengths, was a natural choice for our application. A comprehensive theoretical study motivated the choice of Phosphor (P) as a co-dopant, and established the physical and geometrical design of the protecting fiber. The designed fiber was manufactured, and was analyzed using a variety of experimental techniques and setups. It was found that the fiber provides excellent protection to the pump source, and that it is durable and stable under high power regime.

Our second goal was to demonstrate the use of the designed fiber as a saturable absorber in an all-fiber self-Q-switched Yb laser. Despite their many advantages, relatively few configurations of fiber lasers were Q-switched so far. In most cases, Q-switched fiber lasers suffer from complexities of alignment, packaging, and maintenance. A passive all-fiber configuration allows to avoid these effects, and was therefore of particular interest. In this work, we successfully demonstrated utilization of the designed fiber as a saturable absorber in an all-fiber passively Q-switched ytterbium laser, operating in 1084nm. The laser produced pulse repetition rates of ~40-100kHz, pulse durations of ~ 1-2.5µsec, and pulse energies of up to 1.4 µJ. the experimental results are compared to simulative results, and the differences between the two are discussed.

 

 

Wednesday, April 29, 2015, at 12:00

Room 011, Kitot building.

 

 

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