Crossing the bridge - Ponte 25 de Abril

This is from my recent trip to Lisbon, Portugal. I was able to catch the evening commuter train to the other side of the Targus River. A beautiful city that deserves more time to spend.

Periodic Band Gap (PGB) Waveguide and Propagation - FDTD Simulation

Inspired by the following video:
http://www.youtube.com/watch?v=O-6l0bvAda0

Guiding EM waves via periodic structure. The frequency of operation is 11.085 GHz. The relative dielectric permittivity of the square blocks are 11.56 and the ambient medium is air. Each block is 3.5 mm x 3.5 mm.

The main reference is the below dissertation:
Marcelo Bruno Dias, "Estudo da Propagação de Ondas Eletromagnéticas em Estruturas Periódicas". Graduation Dissertation - Electrical Engineering Course, Universidade Federal do Pará (UFPA), Belém, Pará Brazil, 2003.

More details can be found in their lab web site:
www.lane.ufpa.br/publicacoes.html

Sarajevo Marlboro - Miljenko Jergoviç

Savas sırasında Bosnada kalmaya devam eden Hırvat yazarın (aynı zamanda gazeteci) ilk kitabı. Savaşın etkisini günlük yaşamlardan bahsederek ve de Bosnalı sıradan karakterleri anlatarak başarılı bir şekilde anlatıyor. Çesitli kısa hikayelerden oluşan kitapla birlikte orada yaşananları biraz daha farklı bir açıdan duyma şansı yakalanıyor. Saraybosnada ki kütüphanenin yakılması, eski bir boksörün savaş sırasında geçirdikleri, kaktüs ve de müslüman bebeğim içinde yer alan bazı hikayelerden.

- There is one basic rule, Zuko Dzumbur mentioned it when he was thinking about Bosnia, and it relates to two suitcases that you always have packed in the hall. All your possessions and all your memories have to fit into them . Everything outside is already lost. There is no point in looking for reasons or meanings or excuses. They are just a burden, like memories.

Mart 2005

The Animate Package (Latex) Example using MikTex

To be able to use the Animate package, gif files should be converted to png files using available software. In this case, conversion of the *.gif file into the *.png is carried out by ImageMagick 6.6.8 through Cygwin shell via:

convert filename.gif filename.png

A nice example with sample tex and pdf files can be found at:
http://www.lampos.net/latex-presentation

The wikipedia page for the Beamer presentation package
http://en.wikipedia.org/wiki/Beamer_%28LaTeX%29

Linear, Circular and Elliptical Polarization Animation in a Single Shot

The total electric field components of plane waves with various polarizations traveling in the +z direction. Specifically, linear, right hand circular and elliptical polarizations are shown.



Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens

Portland-Cannon Beach-Astoria-Columbia River Loop

Portland-Cannon Beach-Astoria Loop

A Day trip to Mount Hood and Columbia Gorge

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Standing Wave Pattern

Uniform plane wave traveling in the +z direction and normally incident on a medium interface at z=0. Only the electric field intensity is shown.
The top figure shows the incident (blue), reflected (red), incident+reflected (brown) and transmitted field in both media. In the bottom figure, the standing wave patterns created in both media are shown.

Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens

Linear Polarization Animation

Uniform plane wave traveling in the +z direction. The x and y component of the electric fields are in phase thus the polarization of the electric field is constant over all space (linearly polarized).


Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens

Left Hand Elliptical Polarization (LHEP) Animation

Uniform plane wave traveling in the +z direction. The x and y component of the electric fields have a phase shift with results in a elliptically rotating polarization in the left hand direction.


Also see below:
Oblique Plane Wave Reflection From Half Space
Radiation from a Circularly Tapered Dielectric Waveguide
Right Hand Circular Polarization (RHCP) Animation
Linear Polarization Animation
Left Hand Elliptical Polarization (LHEP) Animation
Standing Wave Pattern (SWR) Animation
Electromagnetic Propagation of UWB Short Pulse in Random Medium 
Half Wavelength Dipole Antenna Radiation 
Dipole Antenna Radiation 
Dish Antenna Animation (Parabolic reflector) 
FDTD Simulation of a Half Convex Lens