Archiv: Simulationen (Technologie) / simulations (technology)


28.04.2026 - 19:44 [ Hackerfactor.com ]

A Picture’s Worth… Digital Image Analysis and Forensics

(2007)

5 Example: Dr. Ayman al Zawahiri

As-Sahab is the video production branch of Al Qaeda. They periodically release videos designed to remind people of Al Qaeda’s existence, issue threats, recruit members, and potentially act as a covert channel for triggering terrorist cells. Many of the videos by As-Sahab appear to have been manipulated.

On 20-Dec-2006, Dr. Ayman al Zawahiri (#2 guy in Al Qaeda) released a video. USA Today covered the video release with a headline story (Figure 25).24 USA Today’s description of the video says, “He wore a black turban and white robe … he had a rifle behind his right shoulder that was leaning against a plain brown backdrop.” While this is a valid description of the As-Sahab video, the picture used by USA Today did not show that image. Instead, USA Today used a picture from another video, dated 28-Sept-2006. This is an example of a mislabeled image.

The picture that USA Today chose to use with the story includes many other interesting features. First, it came from the IntelCenter (www.intelcenter.com) – an organization that tracks terrorist activities. The IntelCenter placed their logo in the top-right corner of the video. However, the company name is clearly cropped – likely by USA Today. A comparison with the same frame from the actual video shows many other observable differences. In particular, the IntelCenter adjusted the color and sharpness of the picture (Figure 26).

(…)

5.1 Other Al Zawahiri Videos

The video from 28-Sept-2006 was not the only manipulated video. In fact, many of the videos featuring al Zawahiri test positive for chroma-key masking. Consider the video released on 27-July-2006 (Figure 27).26 This video appears to show al Zawahiri sitting in a video studio.

When this video came out, many Americans became enraged at the US government. The main strife was generated
by a single argument: if al Zawahiri is sitting in a studio making videos, the why can’t we catch him? The answer is simple: he is not in a studio.

(…)

5.2 Back in Black

Claiming that there was a chroma-key background is not the same as actually seeing it. On 22-Jan-2007, the SITE
Institute (www.siteinstitute.org) – an organization that tracks terrorist activities – announced that they had
intercepted an Al Qaeda video before it had been publicly released; SITE released it. Three days later, As-Sahab
also released the video. ….

28.04.2026 - 19:36 [ killab66661 / Youtube ]

2007 BlackHat Vegas V38 Krawetz A Pictures Worth 02

Nov 2, 2010

28.04.2026 - 19:30 [ Newsbusters.org ]

Hacker Proves How MSM is Fooled by al Qaeda Photochopped Images

(August 5th, 2007)

At the Black Hat computer Hacker‘s conference held in Las Vegas last week, Neal Krawetz of „Hacker Factor“ showed how easily the MSM has been tricked into believing the fake images that al Qaeda has offered to further their propaganda. Krawetz specifically referred to two images, one the July 27, 2006 image of al Qaeda second in command al-Zawahiri supposedly sitting in a modern television studio. It was an image that had the tongues of the MSM and pundits alike wagging. How is it, they clucked, that al-Zawahiri could be sitting in a modern television studio yet still could not be found?

Krawetz demonstrated how the elements of the two images, however, are special effects and not real.

19.03.2025 - 15:21 [ PNAS.org ]

Audible enclaves crafted by nonlinear self-bending ultrasonic beams

(March 17, 2025)

Here, we introduce an approach for creating remote audio spots, dubbed audible enclaves, by harnessing the local nonlinear interaction of two self-bending ultrasonic beams with distinct spectra. The self-bending ultrasonic beams created by acoustic metasurfaces, though inaudible, can bypass obstacles such as human heads.

19.03.2025 - 15:18 [ El Pais ]

A new technique sends sound to a specific person without the surrounding people hearing it

(today)

Telecommunications engineer Juan Miguel Navarro, from the Catholic University of Murcia in Spain, collaborated with Yun Ling over a decade ago on acoustic simulations for large venues. Navarro notes that sound focusing has been used for over 20 years in security applications, such as long-range acoustic devices, considered non-lethal weapons because they emit painful sounds that incapacitate the enemy.

22.05.2023 - 00:34 [ IBM ]

IBM Launches $100 Million Partnership with Global Universities to Develop Novel Technologies Towards a 100,000-Qubit Quantum-Centric Supercomputer

Over the next decade, IBM plans to work with university partners and its worldwide quantum ecosystem to evolve how its quantum processors can be connected via quantum interconnects. This work will aim to enable high-efficiency, high-fidelity inter-processor quantum operations and a reliable, flexible, and affordable system component infrastructure to allow scaling to 100,000 qubits.

IBM‘s collaboration with the University of Chicago will build upon the Chicago area‘s strengths in quantum research. The University of Chicago seeded the region‘s quantum ecosystem more than a decade ago with the decision to make quantum technology a focus of what is now the Pritzker School of Molecular Engineering.

14.11.2021 - 14:00 [ Nature.com ]

Solar differential rotation reproduced with high-resolution simulation

(Published: 13 September 2021)

Here, we show that a high-resolution calculation succeeds in reproducing the solar-like differential rotation. Our calculations indicate that the strong magnetic field generated by a small-scale dynamo has a significant impact on thermal convection. The successful reproduction of the differential rotation, convection and magnetic field achieved in our calculation is an essential step to understanding the cause of the most basic nature of solar activity, specifically, the 11 yr cycle of sunspot activity.

14.11.2021 - 12:24 [ EOS.org ]

Accurate Simulation of Sun’s Rotation Might Illuminate Solar Cycle

(08.11.2021)

Japanese scientists said they have created the first accurate computer simulation of how the Sun rotates, reproducing a phenomenon in which its equatorial area spins faster than its polar regions. The insight could help explain the whys and hows of the solar cycle, one of the biggest mysteries of our star.

07.05.2021 - 11:13 [ Businessinsider.com ]

In a NASA simulation of an asteroid impact, scientists concluded they couldn‘t stop a space rock from decimating Europe

(01.05.2021)

The experts fell short. The group determined that none of Earth‘s existing technologies could stop the asteroid from striking given the six-month time frame of the simulation. In this alternate reality, the asteroid crashed into eastern Europe.

23.02.2021 - 10:03 [ theSun.co.uk ]

DEADLY DATA: Plan to lift lockdown by Easter ‘was canned after Sage scientists warned it would cause 91,000 more deaths

Models predicted it would lead to nearly 60,000 Covid patients in hospital by June, compared to last month‘s high of 39,000.

Chief Scientific Adviser Sir Patrick Vallance spoke of his support for the gradual approach taken by PM Boris Johnson, saying: „The sooner you open up everything, the higher the risk of a bigger resurgence.

„The slower you do it, the better.“

15.07.2020 - 16:55 [ Johan Hidding / Youtube ]

Large scale structure formation in the Universe simulated

Apr 2, 2009

This is a simulation of structure formation in the Universe using the adhesion approximation. The algorithm is described by Weinberg and Gunn in MNRAS in 1990

15.07.2020 - 16:54 [ Youtube ]

The Cosmic Web, or: What does the universe look like at a VERY large scale?

Nov 6, 2010

The Millennium Simulation featured in this clip was run in 2005 by the Virgo Consortium, an international group of astrophysicists from Germany, the United Kingdom, Canada, Japan and the United States.