What are StarGates? Why & wither wormholes? Dangers of sphaghettification. How to build a wormhole? Negative energy & vortices. At the edge of testable. Today, a bridge of birds, tomorrow the cell phone: nearly impossible today, but tomorrow?
Call them Stargates, Jumpgates, Fargates, Hypergates or just an invitation to every unwanted pest from the far reaches of the Galaxy to visit, they're absolutely necessary if we're to have the glorious Science Fiction action we desperately need. Could they actually be built? Modern physics may permit: how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning and paradox noise, and just what would it take to build one in practice.
The Quantum Internet: Hype or the Next StepJohn Ashmead
What do we mean by the quantum internet? Why do we need more than just quantum computing? What are quantum cryptography, quantum key distribution, quantum sensors? How are these concepts entangled? What are the advantages of the quantum internet? key problems? Who will get to use it? And do we have just a bunch of interesting technologies that all have quantum in their name or can the whole be more than the sum of its parts?
How to build a PostgreSQL-backed website quicklyJohn Ashmead
We will show how to get started building a PostgreSQL-backed website using Ruby-on-Rails. We will look at Model-View-Controller architecture; what tools you need to get started; how to work with the online tutorials; what kind of workflow to use; and which tasks to let Ruby-on-Rails handle versus which are better done by PostgreSQL.
The Quantum Internet: Hype or the Next StepJohn Ashmead
What do we mean by the quantum internet? Why do we need more than just quantum computing? What are quantum cryptography, quantum key distribution, quantum sensors? How are these concepts entangled? What are the advantages of the quantum internet? key problems? Who will get to use it? And do we have just a bunch of interesting tech that all have quantum in their name or can the whole be more than the sum of its parts?
Oz’s Tik-Tok to the Mechanical Turk, from Neural Nets & Genetic Algorithms to Chess & StarCraft, from fighting the Coronavirus to flying Killer Drones, from Facial Recognition to Fakes, Deep Fakes, & Anti-Fakes, Artificial Intelligence (AI) is everywhere today. How did it start? What do we mean by AI? What are the basic AI techniques? How is it being used? What are the benefits? risks? and how should we manage AI going forwards?
Time dispersion in time-of-arrival measurementsJohn Ashmead
Can we prove that the Heisenberg uncertainty principle does not apply along the energy/time axis in the same way it applies along the space/momentum axis?
Talk given at the International Association for
Relativistic Dynamics
Time dispersion in quantum mechanics -- Philcon 2019 versionJohn Ashmead
We know from quantum mechanics that space is fuzzy, that particles don’t have a well-defined position in space. And we know from special relativity that time and space are interchangeable. But if they are interchangeable, shouldn’t time be fuzzy as well? Shouldn’t the rules of quantum mechanics apply — along the time dimension? Bohr and Einstein — who disagreed on so much — nevertheless agreed on this.
Is time fuzzy? In quantum mechanics space is fuzzy. And in special relativity time and space are interchangeable. But if time and space are interchangeable, shouldnt time be fuzzy as well? Shouldnt quantum mechanics apply -- to time? Thanks to recent technical advances we can put this to the test. We ask: How do you get a clock in a box? How do you interfere with time? When is one slit better than two? And what happens at the intersection of time and quantum mechanics?
Call them Stargates, Jumpgates, Fargates, Hypergates or just an invitation to every unwanted pest from the far reaches of the Galaxy to visit, they're absolutely necessary if we're to have the glorious Science Fiction action we desperately need. Could they actually be built? Modern physics may permit: how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning and paradox noise, and just what would it take to build one in practice.
The Quantum Internet: Hype or the Next StepJohn Ashmead
What do we mean by the quantum internet? Why do we need more than just quantum computing? What are quantum cryptography, quantum key distribution, quantum sensors? How are these concepts entangled? What are the advantages of the quantum internet? key problems? Who will get to use it? And do we have just a bunch of interesting technologies that all have quantum in their name or can the whole be more than the sum of its parts?
How to build a PostgreSQL-backed website quicklyJohn Ashmead
We will show how to get started building a PostgreSQL-backed website using Ruby-on-Rails. We will look at Model-View-Controller architecture; what tools you need to get started; how to work with the online tutorials; what kind of workflow to use; and which tasks to let Ruby-on-Rails handle versus which are better done by PostgreSQL.
The Quantum Internet: Hype or the Next StepJohn Ashmead
What do we mean by the quantum internet? Why do we need more than just quantum computing? What are quantum cryptography, quantum key distribution, quantum sensors? How are these concepts entangled? What are the advantages of the quantum internet? key problems? Who will get to use it? And do we have just a bunch of interesting tech that all have quantum in their name or can the whole be more than the sum of its parts?
Oz’s Tik-Tok to the Mechanical Turk, from Neural Nets & Genetic Algorithms to Chess & StarCraft, from fighting the Coronavirus to flying Killer Drones, from Facial Recognition to Fakes, Deep Fakes, & Anti-Fakes, Artificial Intelligence (AI) is everywhere today. How did it start? What do we mean by AI? What are the basic AI techniques? How is it being used? What are the benefits? risks? and how should we manage AI going forwards?
Time dispersion in time-of-arrival measurementsJohn Ashmead
Can we prove that the Heisenberg uncertainty principle does not apply along the energy/time axis in the same way it applies along the space/momentum axis?
Talk given at the International Association for
Relativistic Dynamics
Time dispersion in quantum mechanics -- Philcon 2019 versionJohn Ashmead
We know from quantum mechanics that space is fuzzy, that particles don’t have a well-defined position in space. And we know from special relativity that time and space are interchangeable. But if they are interchangeable, shouldn’t time be fuzzy as well? Shouldn’t the rules of quantum mechanics apply — along the time dimension? Bohr and Einstein — who disagreed on so much — nevertheless agreed on this.
Is time fuzzy? In quantum mechanics space is fuzzy. And in special relativity time and space are interchangeable. But if time and space are interchangeable, shouldnt time be fuzzy as well? Shouldnt quantum mechanics apply -- to time? Thanks to recent technical advances we can put this to the test. We ask: How do you get a clock in a box? How do you interfere with time? When is one slit better than two? And what happens at the intersection of time and quantum mechanics?
Why do we want to go? How do we get there? How do we live there? What might we find? What are the dangers: radiation, low gravity, dust, our fellow humans? Is there life on Mars now? Was there once? and did our own evolution actually start on Mars?
Practical Telepathy: The Science & Engineering of Mind-ReadingJohn Ashmead
The document discusses the history and future of telepathy and mind reading. It covers early concepts of mentalism and ESP, scientific studies by Rhine and modern brain imaging techniques like fMRI. The document also discusses emerging technologies that could enable two-way mind-to-mind communication through brain interfaces and issues around privacy and control of one's thoughts. It presents both opportunities like helping disabled people and risks of not fully understanding the complex human mind.
From Startup to Mature Company: PostgreSQL Tips and techniquesJohn Ashmead
This talk is for people relatively new to PostgreSQL who are wondering:
How do I get going with PostgreSQL -- in a way that won’t create problems later on!
We’ll go over best practice in:
Table design
Indexing
PostgreSQL types
Stored procedures -- when & how to use, when not
Triggers
How to work with a web framework (i.e. Ruby-on-Rails): what works belongs in the framework, what should be done in the database
Error & exception management
Doing the right amount of planning
Why you might want to build the help system first, and use it to help build the rest.
Nistica has its ownership in Japan, engineering in New Jersey, & manufacturing in Vietnam so we’ll take a special look at:
Handling different languages & character sets
Timestamps & time zones
How to sync data from one part of the world to another without letting data fall on the floor or creating infinite loopiness.
Nistica has gone from startup to world player in the manufacture of optical switches. It has run its manufacturing on PostgreSQL from the start, using PostgreSQL to drive every step from assembly to quality assurance & tracking all part data in the database.
Going from the ad hoc procedures appropriate for a startup to the disciplined approaches required by the world market has taught us a lot about how to get the best out of PostgreSQL.
We’ve learned a lot from the PostgreSQL community; now we’d like to share some of what we’ve learned from our experience.
Practical Telepathy: The Science & Engineering of Mind-ReadingJohn Ashmead
From van Vogt's Slan to Willis's Crosstalk, telepathy has been a staple of science fiction. But what are the real world chances of reading another person's mind? With MRI & PET scans we can see what images a person is thinking of, with brain implants we can help the blind to see, and -- the way the science is going -- we are only a half-step away from direct mind-to-mind communication. Nothing to worry about here!
Quantum dots (QD) are semiconductors made via several possible routes. John Ashmead discusses how they are made, their properties and their applications in research.
Call them Stargates, Jumpgates, Fargates, Hypertubes or just an invitation to every unwanted pest from the far reaches of the Galaxy to visit, they are absolutely necessary if we are to have the glorious Science Fiction action we desperately need. But could they actually be built? We look at what modern physics has to say: how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning, and paradox noise, and just what it would take to build one in practice.
The document discusses three stories that involve time travel: The Anubis Gates, about a steampunk time machine; 3 Days to Never, about a bicycle-based time machine and a girl transported through time; and Burning Gates of Anubis, a sequel to The Anubis Gates. It provides summaries of the time travel plots and devices in each story.
We look at the history of the multiverse, the big bang theory, the problem of fine-tuning, how it is solved by the anthropic principle, how the combination of eternal inflation & string theory might create many universes, and a bit of discussion as to the odds of the multiverse being true.
We review the double slit experiment, the "central mystery" of quantum mechanics as Feynman put it. We included a number of animations, including some from Larry Latham specially done for this presentation! Unfortunately the animations don't seem to post correctly to slideshare, alas.
How to convert from MySQL to PostgreSQL: discuss history of each, current status, when you might wish to convert, what might motivate you to convert, & how to do so. With references.
The document describes 7 stories from the author's career as a programmer. Each story highlights a different challenge solved through creative technical solutions: 1) Automating stored procedure generation. 2) Generating joins by reading metadata. 3) Mapping fonts to work around software limitations. 4) Creating an easy-to-use program for a coworker with disabilities. 5) Writing a file checking utility in a day. 6) Creating a color-coded report to identify issues across departments. 7) Monitoring remote switches and troubleshooting connection issues. The last story describes consolidating duplicate reports into a single automated report. The moral is to know the technology, business needs, and take time for creative thinking.
This document discusses MAMP (Macintosh, Apache, MySQL, PHP), a free and open-source web development environment for macOS. It provides an overview of MAMP itself as a German company and its generally stable but sometimes finicky releases. Key components like the Apache web server, MySQL database, and PHP programming language are explained. The benefits of developing websites locally before deploying and tools like PhpMyAdmin for database administration are also summarized.
"It is a profoundly erroneous truism, repeated by all copybooks and by eminent people making speeches, that we should cultivate the habit of thinking of what we are doing. The precise opposite is the case. Civilization advances by extending the number of important operations we can perform without thinking about them. Operations of thought are like cavalry charges in a battle - they are strictly limited in number, they require fresh horses, and must only be made at decisive moments."
-- Alfred North Whitehead,
This document provides an overview of Ruby on Rails and PostgreSQL. It discusses that Ruby on Rails is a web application framework built with Ruby. It also discusses that PostgreSQL is a database that can be used with Rails through the pg gem. Finally, it provides tips on using RVM, migrations, Heroku, testing, and other Rails topics.
Invisibility: Theory and Practice - v2John Ashmead
The document is a presentation about invisibility given by John Ashmead at the FOSSCON conference on August 10th, 2013. It covers the history of attempts to achieve invisibility through camouflage and stealth technologies. It also discusses current theories and research regarding invisibility cloaks and manipulating light through metamaterials and transformations of space according to the principles of quantum mechanics and general relativity. The presentation provides both historical context and an overview of the physics behind recent advances in creating invisibility.
invisibility: Theory and Practice - v1John Ashmead
The document discusses the history and physics of invisibility, including camouflage techniques used in wartime and theories of metamaterials that could create invisibility cloaks by bending light around an object. It covers historical examples like "dazzle" camouflage used on ships as well as modern research into cloaking using transformations of space and negative refractive indexes to route light around an obscured region.
The document discusses various interpretations and aspects of quantum mechanics. It explores interpretations like the Copenhagen interpretation, hidden variable theories, the many worlds interpretation, and issues like wave function collapse and decoherence. It also discusses open questions like the nature of reality according to quantum mechanics and the relationship between the quantum realm and classical physics.
Thought experiments are conceptual experiments used to illustrate scientific principles through logic rather than experimentation. Some key thought experiments discussed in the document include Galileo demonstrating that heavier objects do not necessarily fall faster, Einstein envisioning chasing a beam of light and considering the implications of the constancy of the speed of light, and Einstein's thought experiment about an observer in a closed box unable to determine if they are accelerating or under the influence of gravity. Thought experiments have been used since ancient Greece and can illustrate, attack, support, or help understand scientific concepts.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
Why do we want to go? How do we get there? How do we live there? What might we find? What are the dangers: radiation, low gravity, dust, our fellow humans? Is there life on Mars now? Was there once? and did our own evolution actually start on Mars?
Practical Telepathy: The Science & Engineering of Mind-ReadingJohn Ashmead
The document discusses the history and future of telepathy and mind reading. It covers early concepts of mentalism and ESP, scientific studies by Rhine and modern brain imaging techniques like fMRI. The document also discusses emerging technologies that could enable two-way mind-to-mind communication through brain interfaces and issues around privacy and control of one's thoughts. It presents both opportunities like helping disabled people and risks of not fully understanding the complex human mind.
From Startup to Mature Company: PostgreSQL Tips and techniquesJohn Ashmead
This talk is for people relatively new to PostgreSQL who are wondering:
How do I get going with PostgreSQL -- in a way that won’t create problems later on!
We’ll go over best practice in:
Table design
Indexing
PostgreSQL types
Stored procedures -- when & how to use, when not
Triggers
How to work with a web framework (i.e. Ruby-on-Rails): what works belongs in the framework, what should be done in the database
Error & exception management
Doing the right amount of planning
Why you might want to build the help system first, and use it to help build the rest.
Nistica has its ownership in Japan, engineering in New Jersey, & manufacturing in Vietnam so we’ll take a special look at:
Handling different languages & character sets
Timestamps & time zones
How to sync data from one part of the world to another without letting data fall on the floor or creating infinite loopiness.
Nistica has gone from startup to world player in the manufacture of optical switches. It has run its manufacturing on PostgreSQL from the start, using PostgreSQL to drive every step from assembly to quality assurance & tracking all part data in the database.
Going from the ad hoc procedures appropriate for a startup to the disciplined approaches required by the world market has taught us a lot about how to get the best out of PostgreSQL.
We’ve learned a lot from the PostgreSQL community; now we’d like to share some of what we’ve learned from our experience.
Practical Telepathy: The Science & Engineering of Mind-ReadingJohn Ashmead
From van Vogt's Slan to Willis's Crosstalk, telepathy has been a staple of science fiction. But what are the real world chances of reading another person's mind? With MRI & PET scans we can see what images a person is thinking of, with brain implants we can help the blind to see, and -- the way the science is going -- we are only a half-step away from direct mind-to-mind communication. Nothing to worry about here!
Quantum dots (QD) are semiconductors made via several possible routes. John Ashmead discusses how they are made, their properties and their applications in research.
Call them Stargates, Jumpgates, Fargates, Hypertubes or just an invitation to every unwanted pest from the far reaches of the Galaxy to visit, they are absolutely necessary if we are to have the glorious Science Fiction action we desperately need. But could they actually be built? We look at what modern physics has to say: how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning, and paradox noise, and just what it would take to build one in practice.
The document discusses three stories that involve time travel: The Anubis Gates, about a steampunk time machine; 3 Days to Never, about a bicycle-based time machine and a girl transported through time; and Burning Gates of Anubis, a sequel to The Anubis Gates. It provides summaries of the time travel plots and devices in each story.
We look at the history of the multiverse, the big bang theory, the problem of fine-tuning, how it is solved by the anthropic principle, how the combination of eternal inflation & string theory might create many universes, and a bit of discussion as to the odds of the multiverse being true.
We review the double slit experiment, the "central mystery" of quantum mechanics as Feynman put it. We included a number of animations, including some from Larry Latham specially done for this presentation! Unfortunately the animations don't seem to post correctly to slideshare, alas.
How to convert from MySQL to PostgreSQL: discuss history of each, current status, when you might wish to convert, what might motivate you to convert, & how to do so. With references.
The document describes 7 stories from the author's career as a programmer. Each story highlights a different challenge solved through creative technical solutions: 1) Automating stored procedure generation. 2) Generating joins by reading metadata. 3) Mapping fonts to work around software limitations. 4) Creating an easy-to-use program for a coworker with disabilities. 5) Writing a file checking utility in a day. 6) Creating a color-coded report to identify issues across departments. 7) Monitoring remote switches and troubleshooting connection issues. The last story describes consolidating duplicate reports into a single automated report. The moral is to know the technology, business needs, and take time for creative thinking.
This document discusses MAMP (Macintosh, Apache, MySQL, PHP), a free and open-source web development environment for macOS. It provides an overview of MAMP itself as a German company and its generally stable but sometimes finicky releases. Key components like the Apache web server, MySQL database, and PHP programming language are explained. The benefits of developing websites locally before deploying and tools like PhpMyAdmin for database administration are also summarized.
"It is a profoundly erroneous truism, repeated by all copybooks and by eminent people making speeches, that we should cultivate the habit of thinking of what we are doing. The precise opposite is the case. Civilization advances by extending the number of important operations we can perform without thinking about them. Operations of thought are like cavalry charges in a battle - they are strictly limited in number, they require fresh horses, and must only be made at decisive moments."
-- Alfred North Whitehead,
This document provides an overview of Ruby on Rails and PostgreSQL. It discusses that Ruby on Rails is a web application framework built with Ruby. It also discusses that PostgreSQL is a database that can be used with Rails through the pg gem. Finally, it provides tips on using RVM, migrations, Heroku, testing, and other Rails topics.
Invisibility: Theory and Practice - v2John Ashmead
The document is a presentation about invisibility given by John Ashmead at the FOSSCON conference on August 10th, 2013. It covers the history of attempts to achieve invisibility through camouflage and stealth technologies. It also discusses current theories and research regarding invisibility cloaks and manipulating light through metamaterials and transformations of space according to the principles of quantum mechanics and general relativity. The presentation provides both historical context and an overview of the physics behind recent advances in creating invisibility.
invisibility: Theory and Practice - v1John Ashmead
The document discusses the history and physics of invisibility, including camouflage techniques used in wartime and theories of metamaterials that could create invisibility cloaks by bending light around an object. It covers historical examples like "dazzle" camouflage used on ships as well as modern research into cloaking using transformations of space and negative refractive indexes to route light around an obscured region.
The document discusses various interpretations and aspects of quantum mechanics. It explores interpretations like the Copenhagen interpretation, hidden variable theories, the many worlds interpretation, and issues like wave function collapse and decoherence. It also discusses open questions like the nature of reality according to quantum mechanics and the relationship between the quantum realm and classical physics.
Thought experiments are conceptual experiments used to illustrate scientific principles through logic rather than experimentation. Some key thought experiments discussed in the document include Galileo demonstrating that heavier objects do not necessarily fall faster, Einstein envisioning chasing a beam of light and considering the implications of the constancy of the speed of light, and Einstein's thought experiment about an observer in a closed box unable to determine if they are accelerating or under the influence of gravity. Thought experiments have been used since ancient Greece and can illustrate, attack, support, or help understand scientific concepts.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
Nucleophilic Addition of carbonyl compounds.pptxSSR02
Nucleophilic addition is the most important reaction of carbonyls. Not just aldehydes and ketones, but also carboxylic acid derivatives in general.
Carbonyls undergo addition reactions with a large range of nucleophiles.
Comparing the relative basicity of the nucleophile and the product is extremely helpful in determining how reversible the addition reaction is. Reactions with Grignards and hydrides are irreversible. Reactions with weak bases like halides and carboxylates generally don’t happen.
Electronic effects (inductive effects, electron donation) have a large impact on reactivity.
Large groups adjacent to the carbonyl will slow the rate of reaction.
Neutral nucleophiles can also add to carbonyls, although their additions are generally slower and more reversible. Acid catalysis is sometimes employed to increase the rate of addition.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...Sérgio Sacani
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
BREEDING METHODS FOR DISEASE RESISTANCE.pptxRASHMI M G
Plant breeding for disease resistance is a strategy to reduce crop losses caused by disease. Plants have an innate immune system that allows them to recognize pathogens and provide resistance. However, breeding for long-lasting resistance often involves combining multiple resistance genes
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
8. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
What do we mean by a
StarGate?
• Any instantaneous transport
• Usually associated with a gate
& a bit of tube-y-ness
• Mostly wormholes here
• StarGates & Faster-than-light
travel
• StarGates & Time Travel
• StarGates & Parallel universes
10. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
The Ant & the Worm
• “We burrow our
way through the
apple like a
worm, crossing
from one side of
the galaxy to the
other instead of
going around the
outside” — Col. S.
Carter
13. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
Black Hole at the
Center of our Galaxy
• “The stellar orbits in
the galactic centre
show that the central
mass concentration
of four million solar
masses must be a
black hole, beyond
any reasonable
doubt.” - Genzel,
Max Planck Institute
27. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
Fabric of spacetime
• Quantum vacuum
noisy with
wormholes
• Find (with exotic
matter)
• Grow (feed with
exotic matter)
• Keep from eating
the solar system
(feed with normal
matter)
32. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
Uses of StarGates
• Fill in plot holes,
• Give us deeper
understanding of our
theories & our universe,
• Maybe, even, help get
the human race a bit of
badly needed breathing
room,
• And lots of fun!
33. http://timeandquantummechanics.comStargates/Ashmead - FossCon / Aug 26th, 2017
Ad astra per aspera
• Physics of Stargates - Rodrigo
• From Eternity to Here - Carroll
• Science of Interstellar - Thorne
• Time Travel & Warp Drives -
Everett & Roman
• The Physics of Time - Muller