Sunday, August 9, 2020

Civilian Trials In Military Courts in Al Sisi’s Egypt

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Vanshita Banuana

Article Title

Civilian Trials In Military Courts in Al Sisi’s Egypt

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Global Views 360

Publication Date

August 9, 2020

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President Trump (L) greeting Al-Sisi (R)

President Trump (L) greeting Al-Sisi (R) | Source: The White House via Flickr

With President Abdel Fattah al-Sisi in power, Egypt is currently in the throes of a near-complete reversal of democracy. Under his rule the military has intruded into almost all aspects of public life, in a very explicit attempt to instill fear in Egyptians.

One of the most pervasive examples of this has been the military’s disruption of judicial process, with interference turning to encroachment as more and more civilians continue to be tried and sentenced by the army, through various nefarious means of expanded military jurisdiction.

Mohammad Morsi at XVI Non-Aligned Movement (NAM) Summit, in Tehran, Iran on August 30, 2012 | Source: Government of India via Wikimedia

While a military judiciary has been present in Egypt since the 1960s, their power continued to grow after then Defence Minister Sisi overthrew the democratically elected President, Mohammed Morsi in a coup and became Egypt’s new leader. Since then he has worked towards removing tenure limits to his term, virtually guaranteeing him power for another decade or more.

The Egyptian government, like many others across the globe, has used the pandemic and the limited mobility of citizens due to it to tighten their chokehold on dissent and opposition. In April 2020, the Egyptian Parliament passed amendments to its Emergency Law. The law already prohibited demonstrations and protests, and now allows the military to arrest and confiscate assets of citizens without requiring permission from the special prosecutor, and investigate civilians without the right to appear before a judge.

Egypt has seen more time under Emergency Law than not in the past few decades, and President Sisi has not strayed from this pattern. The law has been used in many ways to normalize the military trespassing into the civil judicial system, such as having military judges on civil judicial councils and declaring the military judiciary as “an independent judicial entity” no longer under the command of the armed forces.

Public facilities have been placed under military jurisdiction, in conjunction with a law that allows anyone who directly or indirectly “assaults” an army base to be tried in a military court. In these courts defendants do not have common legal rights such as being informed of their charges, access to a lawyer or being brought before a judge soon after arrest.

Late Shaby Habash, a young filmmaker who died in prison August 2020 | Source: Shaby Habash Facebook

Additionally, there have been multiple reports of torture, sexual assault while placed in detention. In prison too, detainees face inhumane conditions, not being allowed to see family, exercise or get sunshine and fresh air. Thousands of student protestors, journalists and political dissidents have been tried in these military courts, and hundreds more have been killed extrajudicially. At the same time, citizens’ tools to criticise these steps are undermined, such as by limiting the domain of NGOs, censoring news and social media, and blocking around 600 websites.

The arrest, incarnation and trial of the deposed President, Mohammed Morsi is a glaring example of what is wrong with Egypt’s military trials. Morsi, who was in jail for over 6 years since the coup in 2013 and was under trial in military court collapsed and died during a hearing in the military court itself.

The constitution, the parliament, the law, and the abuse of these pillars of democracy has been instrumental in Sisi being able to give the military and himself the extreme power that they now possess. But despite restrictions on assembling and protesting, Egyptians continue to make their voices heard in the streets and worldwide, hoping that where institutions betray them, their community won’t. Hoping against hope, hoping against tyranny.

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April 13, 2021 2:10 PM

Detecting The Ultra-High Energy Cosmic Rays With Smartphones

Smartphones have become the most commonplace objects in our daily lives. The unimaginable power that we hold in our hands is unrealized by most of us and, more importantly, untapped. Its creativity often gets misused but one can only hope that it’s fascinating abilities would be utilized. For example, did you know that the millions of phones around the globe can be connected to form a particle detector? The following article covers the CRAYFIS (Cosmic RAYs Found in Smartphones) phone-based application developed by the physicists from the University of California—Daniel Whiteson, Michael Mulhearn, and their team. CRAYFIS aims to take advantage of the large network of smartphones around the world and detect the cosmic or gamma rays bursts which enter the Earth’s atmosphere almost constantly.

What Are Cosmic Rays?

Cosmic rays are high velocity subatomic particles bombarding the Earth’s upper atmosphere continuously. Cosmic ray bursts have the highest energy compared to all forms of electro-magnetic radiation. When we say ultra-high energy particles (energy more than 1018^eV), we mean two million times more energetic than the ones that can be produced by the particle colliders on Earth.  These rays are thought to be more powerful than typical supernovae and can release trillions of times more energy than the Sun. They are also highly unpredictable as they can enter Earth’s atmosphere from any direction and the bursts can last for any period of time ranging from a few thousand seconds to several minutes.

Despite many theoretical hypotheses, the sources of these ultra-high energy cosmic rays are still a mystery to us even after many decades of their discovery. These rays were initially discovered in the 1960’s by the U.S. military when they were doing background checks for gamma rays after nuclear weapon testing. Cosmologists suggest that these bursts could be the result of super massive stars collapsing - leading to hypernova; or can be retraced to collisions of black holes with other black holes or neutron stars.

How Do We Detect Them?

When the high-energy particles collide with the Earth’s atmosphere, the air and the gas molecules cause them to break apart and create massive showers of relatively low-energy particles. Aurora borealis i.e., the Northern and the Southern lights are the lights that are emitted when these cosmic rays interact with the Earth’s magnetic field. Currently, these particles are hitting the Earth at a rate of about one per square meter per second. The showers get scattered to a radius of one or two kilometers consisting mostly of high-energy photons, electrons, positrons and muons. But the fact that these particles can hit the Earth anytime and anywhere is where the problem arises. Since the Earth has a massive area, it is not possible to place a detector everywhere and catch them at the exact moment.

Energetic charged particles known as cosmic rays hit our atmosphere, where they collide with air molecules to produce a shower of secondary particle | Source: CERN

Detecting such a shower requires a very big telescope, which logically means a network of individual particle detectors distributed over a mile or two-wide radius and connected to each other. The Pierre Auger Observatory in South America is the only such arrangement where 1,600 particle detectors have been scattered on 3,000 square kilometers of land. But the construction cost of the same was about $100 million. Yet, only a few cosmic ray particles could be detected using this arrangement. How do we spread this network around the Earth?

In addition to being cost-effective, such a setup must also be feasible. The Earth’s surface cannot possibly be dotted with particle detectors which cost huge fortunes. This is where smartphones come into the picture.

Detecting The Particles Using Smartphones

Smartphones are the most appropriate devices required to solve the problem. They have planet wide coverage, are affordable by most people and are being actively used by more than 1.5 billion users around the planet. Individually, these devices are low and inefficient; but a considerably dense network of such devices can give us a chance to detect cosmic ray showers belonging to the highest energy range.

Previous research has shown that smartphones have the capability of detecting ionizing radiation. The camera is the most sensitive part of the smartphone and is just the device required to meet our expectations. A CMOS (Complementary Metal Oxide Semiconductor) device is present in the camera- in which silicon photodiode pixels produce electron-hole pairs when struck by visible photons (when photons are detected by the CMOS device, it leaves traces of weakly activated pixels). The incoming rays are also laced with other noises and interference from the surroundings.  Although these devices are made to detect visible light, they still have the capability of detecting higher-energy photons and also low-ionizing particles such as the muons.

A screenshot from the app which shows the exposure time, the events- the number of particles recorded and other properties

To avoid normal light, the CRAYFIS application is to be run during nighttime with the camera facing down. As the phone processor runs the application it collects data from its surroundings using a camera as its detector element. The megapixel images (i.e., the incoming particles) are scanned at a speed of 5 to 15 frames per second, depending on the frame-processing speed of the device. Scientists expect that signals from the cosmic rays would occur rarely, i.e., around one in 500 frames. Also, there is the job of removing background data. An algorithm was created to tune the incoming particle shower by setting a threshold frequency at around 0.1 frames per second. Frames containing pixels above the threshold are stored and passed to the second stage which examines the stored frames, saving only the pixels above a second, lower threshold.

The CRAYFIS app is designed to run when the phone is not being used and when it is connected to a power source. The actual performance would be widely affected by the geometry of the smartphone’s camera and the conditions in which the data is being collected. Further, once the application is installed and is in the operating mode, no participation is required from the user, which is required to achieve wide-scale participation. When a Wifi connection is available the collected data would be uploaded to the central server so that it could be interpreted.

There is much complicated math used to trace back the information collected from the application. The most important parameters for the app are the local density of incoming particles, the detection area of the phone and the particle identification efficiency. These parameters are used to find the mean number of candidates (photons or muons) being detected. Further, the probability that a phone will detect no candidates or the probability that a phone will detect one or more candidates is given by Poisson distribution. The density of the shower is directly proportional to the incident particle energy with a distribution in x and y sensitive to the direction in which the particle came from. An Unbinned Likelihood (it is the probability of obtaining a certain data- in this case the distribution of the cosmic rays including their energy and direction, the obtained data is arranged into bins which are very, very small) analysis is used to determine the incident particle energy and direction. To eliminate background interference, a benchmark requirement has been set that at least 5 phones must detect and register a hit to be considered as a candidate.

It is impossible to express just how mind-blowing this innovation is. As the days pass, Science and Technology around us keep on surprising us and challenge us to rack our brains for more and more unique ways to deal with complex problems. The CRAYFIS app is simply beautiful and it would be a dream-come-true to the scientists if the project works out and we are able to detect these high energy, super intimidating cosmic rays with smartphones from our backyard.

Further Reading

The paper by Daniel Whiteson and team can be found here.

An exciting book “We Have No Idea” by Daniel Whiteson and cartoonist Jorge Cham can be found here.

The CRAYFIS app can be found here.

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