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Messages - Nusrat Jahan Momo

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31
Thanks for sharing.

32
There is something very distinct about the air over India and the surrounding countries in South Asia.

It is the presence of formaldehyde - a colourless gas that is naturally released by vegetation but also from a number of polluting activities.

The elevated concentrations have been observed by Europe's new Sentinel-5P satellite, which was launched last October to track air quality worldwide.

It is information that will inform policies to clean up the atmosphere.

    Tracking ships' dirty fumes from orbit
    Sentinel tracks California smoke plume
    New Sentinel satellite tracks dirty air

Compared to the major constituents like nitrogen and oxygen, the formaldehyde signal is actually very small; in every billion air molecules just a few will be CH₂O. But it can be a signifier of more general pollution problems, says Isabelle De Smedt from the Royal Belgian Institute for Space Aeronomy (BIRA-IASB).

"The formaldehyde column is composed of different sorts of volatile organic compounds, and the source can be from vegetation - so, from natural origin - but also from fires and pollution," she told BBC News.

"It depends on the region but 50-80% of the signal is from some biogenic origin. But above that you have pollution and fire. And the fire can be from coal burning or wildfires, but in India, yes, you have a lot of agricultural fires."

India also uses considerable quantities of wood in the home for cooking and heating.

When volatile organic compounds are brought together with nitrogen dioxide (NO₂, from fossil fuel burning) and sunlight, reactions will produce ground-level ozone.

This is a severe respiratory irritant that can lead to significant health problems.
Image copyright COPERNICUS SENTINEL DATA 2018/BIRA-IASB/DLR
Image caption Power of Tropomi: It took years to get similar data from the previous instrument

Notice how the Himalaya Mountains essentially corral the air on the plains, preventing it from moving north.

The relative low in formaldehyde concentration in north-west India is centred over the desert lands of Rajasthan, where, obviously, there is much less vegetation and fewer people.

Sentinel-5P was procured and launched by the European Space Agency for the European Union's Copernicus Earth-monitoring programme.

The satellite's Tropomi instrument can detect the presence in the atmosphere of a suite of trace gases in addition to formaldehyde, including nitrogen dioxide, ozone, sulphur dioxide (SO₂), methane, carbon monoxide (CO) and aerosols (small droplets and particles).

All affect the air we breathe and therefore our health, and a number of them also play a role in climate change.
Image copyright COPERNICUS SENTINEL DATA 2018/BIRA-IASB/DLR
Image caption Formaldehyde concentrations across the globe, Nov-2017 to June-2018: The information will help develop policies to improve air quality

The Tropomi instrument itself represents a remarkable step-change on the capability of its predecessor spectrometer system known as Omi, which still flies today on an American space agency satellite.

"We already had really good data, but we needed many more days of observations, sometimes years of observations, to get this kind of quality," said Dr De Smedt.

"The new (India) map contains four months of data. Tropomi can do in one month what Omi did in six.

"We now see much faster the details, the small emissions, the cities - the kind of signals we didn't see so well before. We needed 10 years of data to see the emissions around Tehran, for example. In this map you can see them from only four months of Tropomi data."

After a test and commissioning phase, S5P will go fully operational at the end of the month for some of its data products, such as nitrogen dioxide and carbon monoxide.

Others, like formaldehyde, will have to wait until the Autumn.

Overall, the Tropomi investigations on S5P are led from the Netherlands Met Office (KNMI). The BIRA-IASB heads up the CH₂O and SO₂ analyses.

The bus, or chassis, of the satellite was assembled by Airbus in the UK, making S5P Britain's biggest single industrial contribution to the Sentinel series of satellites that have been procured for Copernicus.

34
Software Engineering / Re: What You Should Know About GitHub
« on: June 24, 2018, 10:00:02 AM »
Informative post.

35
Software Engineering / Re: Oracle Soar to the Cloud
« on: June 24, 2018, 09:59:31 AM »
Thanks for sharing it.

36
Thanks for sharing

37
Thanks for sharing this information

38
The International Conference on Computer, Communication, Chemical, Material and Electronic Engineering (IC4ME2-2018) will be held from February 8~9, 2018 at University of Rajshahi in Bangladesh. This conference is a sequel of our first conference ICMEIE-2015. The conference will gather world-class researchers, engineers and educators engaged in the fields of Materials, Electronics, Chemical and Information Engineering to meet and present their latest activities. The main theme of this conference is Networking and Collaboration. You are cordially invited to attend this interesting event. The scope (not limited to) of the conference is:

    Functional Materials (Biomaterials, Electronic, Optical and Magnetic Materials, Nanomaterials etc.)
    Energy Engineering
    Signal & Image Processing
    Communications and Networking
    Computer & Control
    Information System
    Bioinformatics
    Biomedical Engineering
    Chemical Engineering
    Others

For more details please visit: http://dept.ru.ac.bd/ic4me2-2018/

39
Conference/Seminar / ICECE 2018
« on: May 08, 2018, 10:29:26 AM »
The 10th International Conference on Electrical and Computer Engineering (ICECE 2018) is the pioneering international conference in the areas of electrical and computer engineering. ICECE brings together individuals from academia, research organizations, government, and industry to discuss and share ideas and present their latest findings and experiences in the areas of electrical and computer engineering. Prospective authors are invited to submit original technical papers for presentation at the conference. The presented papers will be available in the digital library of IEEE Xplore.
For more details please visit: http://icece.buet.ac.bd/i2018/

40
he 21st International Conference on Computer and Information Technology 2018 (ICCIT 2018) at United International University (UIU) welcomes and encourages the submission of accurate and relevant papers of original, unpublished work in various fields of Computer Science/Engineering, Information and Communication Technology.

ICCIT 2018, co-sponsored by IEEE Bangladesh section, is the largest technical event on Computer Science and Engineering, Information and Communication Technology in Bangladesh. The focus of the conference is to establish an effective platform for institutions and industries to share ideas and to present the works of scientists, engineers, educators and students from all over the world. The proceedings of the conference will be published in the form of Book (including in IEEE Xplore) and CDROM.

Major tracks of interest include, but not limited to, are:

Algorithms
Artificial intelligence
Bio-informatics
Bangla Language Processing
Computer Vision
Computer Graphics and Multimedia
Computer Based Education
Computer Networks and Data Commu.
Cloud Computing
Database Systems
Digital Signal and Image Processing
Digital systems and Logic Design
Distributed and Parallel Processing

Embedded System and Software
E-commerce and E-governance
Fuzzy Systems
Gaming
Grid and Scalable Computing
Human Computer Interaction
Intelligent Information Systems
Internet and Web Applications
IT Policy and Business Management
Knowledge and Data Engineering
Mobile and Ubiquitous Computing
Modeling and Simulation
Multimedia Systems and Services

Neural Networks
Optical Fiber Communication
Pattern Recognition
Parallel and Distributed Systems
Quantum Computing
Robotics
Reliability Engineering
Software Engineering
Security and Information Assurance
Spatial Information Systems
System Security and control
VLSI
Wireless Communication

41
Over the past year, Qualys (where I’m employed as the CISO) discovered serious weaknesses in the Schneider Electric ETG3000 FactoryCast HMI Gateway, an administrative interface used to manage industrial controls systems, and within the Linux glibc library.  In both cases, the vulnerabilities could allow a remote attacker to take control of the systems and cause significant harm.  Once such vulnerabilities are discovered, should one disclose them? If so, how does one do that?

There are two types of disclosures used by alumnus of Regis' information assurance graduate program and the security research field at large:  full disclosure and responsible disclosure.  Full disclosure is the practice of publishing the details of the vulnerability as early as possible and making the information available to everyone without restriction, which typically includes publicly releasing information through online forums or websites.  The primary argument for full disclosure is that ethically, the potential victim of attacks should be as knowledgeable as those who attack them.

Alternatively, responsible disclosure requires that the security researcher not disclose the vulnerability until a fix is available.  The argument for responsible disclosure is that blackhats – cyber criminals – can typically exploit the vulnerability when publicly disclosed much quicker than those who are attacked can fix the issue.  As such, it is important that a fix is ready and widely available once the vulnerability is made widely known. Responsible disclosure basically requires:

    That the security researcher who found the vulnerability confidentially reports it to the impacted company.
    That the security researcher and company work in good faith to establish an agreed upon period of time for the vulnerability to be patched.
    Once the agreed upon time period expires and the vulnerability is patched or the patch is available for installation by the users of the software, the security researcher can publicly disclose the vulnerability.

Several companies, such as Google, Microsoft, and Facebook, have also instituted bug bounty programs.  Bug bounty programs are similar to responsible disclosure, with the exception that the security researcher is compensated for reporting the vulnerability.

As a future security professional with your master's degree in information assurance, you may one day discover a vulnerability that could be leveraged by blackhats to wreak havoc across the Internet.  When you do, how will you disclose the vulnerability?

42
In a laboratory in Copenhagen, scientists believe they are on the verge of a breakthrough that could transform computing.

A team combining Microsoft researchers and Niels Bohr Institute academics is confident that it has found the key to creating a quantum computer.

If they are right, then Microsoft will leap to the front of a race that has a tremendous prize - the power to solve problems that are beyond conventional computers.

In the lab are a series of white cylinders, which are fridges, cooled almost to absolute zero as part of the process of creating a qubit, the building block of a quantum computer.
"This is colder than deep space, it may be the coldest place in the universe," Prof Charlie Marcus tells me.

The team he leads is working in collaboration with other labs in the Netherlands, Australia and the United States in Microsoft's quantum research programme.

Right now, they are behind in the race - the likes of Google, IBM and a Silicon Valley start-up called Rigetti have already shown they can build systems with as many as 50 qubits. Microsoft has yet to demonstrate - in public at least - that it can build one.

But these scientists are going down a different route from their rivals, trying to create qubits using a subatomic particle, whose existence was first suggested back in the 1930s by an Italian physicist Ettore Majorana.
Media captionWATCH: Quantum computing explained in 20 seconds

This week scientists from Microsoft's laboratory in Delft published a paper in the journal Nature outlining the progress they had made in isolating the Majorana particle.

Their belief is that this will lead to a much more stable qubit than the methods their rivals are using, which are highly prone to errors. That should mean scaling up to a fully operational quantum computer will be far easier.

At the Copenhagen lab they showed me through a powerful microscope the tiny wire where they have created these Majorana particles. Later over dinner, Prof Charlie Marcus tried, not altogether successfully, to demonstrate to someone whose last physics exam was more than 40 years ago what was unique about this approach with three pieces of bread and some cutlery.

"What's really astounding with this activity compared with what everybody else is doing is that we have to invent a particle that's never existed before and then use it for computing," he explains.

"It's a profoundly more exotic challenge than what's going on with other approaches to quantum computing."

Other scientists taking those other approaches are looking on with great interest and a little scepticism.

"It's one of those things that on paper look incredibly exciting but physics has a habit of throwing up spanners in the works," says University College London's Prof John Morton, whose research involves using good old fashioned silicon to build qubits.

"Until we see the demonstration we don't know how well these Majorana qubits developed by Microsoft will really behave."
Media captionCanada's Prime Minister Justin Trudeau was challenged to explain quantum computing in 2016

He says this is a big year for the field, with the strong likelihood that Google or IBM will demonstrate what is known as quantum supremacy, where a problem that is beyond a conventional supercomputer is solved using quantum methods.

But Microsoft seems confident that its years of research will soon pay off.

"We will have a commercially relevant quantum computer - one that's solving real problems - within five years," says Dr Julie Love, Microsoft's director of quantum computing business development.

She is already out selling the company's customers a vision of a near future where quantum computers will help battle climate change, create new superconducting materials and super-charge machine learning.

"What it allows us to do is solve problems that with all of our supercomputers running in parallel would take the lifetime of the universe to solve in seconds, hours or days."

So, the heat is on for the research team. Prof Charlie Marcus, who spent most of his career at Harvard before being recruited to run the Copenhagen lab, says his life has been about creating knowledge, not building products.

"My job is to find out what works and hand it off to the engineers and computer scientists who will turn it into a technology."

Heading up the whole programme is Todd Holmdahl, the Microsoft executive previously in charge of the Hololens mixed reality headset and the Xbox games console - a measure of how serious the company is about making some quantum hardware pretty soon.

I pressed Prof Marcus on whether his team was going to hit that ambitious five year target set by his employer.

"We're sure going to try," he says with a grin.
Source:bbc news

43
Software Engineering / Re: Top 7 e-learning blog
« on: April 02, 2018, 02:59:20 PM »
Thanks for sharing.

44
Thanks sir for sharing this information.

45
Thanks mam for sharing this information.

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