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.
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.
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.
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.
Planning and executing a DB2 11 for z/OS Migration by Ian Cook Surekha Parekh
This document discusses planning and executing a migration from DB2 10 to DB2 11 for z/OS. It begins with an overview of the DB2 11 Early Support Program (ESP) feedback, which was positive regarding performance, quality, and reliability. The presentation then covers key aspects of developing a migration project plan, including assembling a project team, identifying technical considerations, and creating a test plan. It emphasizes early elimination of risks and issues. Sample project frameworks are provided to help structure planning and testing across sandbox, development, and production environments. Attendees are advised to contact software vendors to coordinate DB2 version requirements.
This document discusses considerations for migrating to DB2 10 from earlier versions. It notes that IBM is ending support for DB2 V8 in 2012, prompting many organizations to migrate. Key topics covered include potential issues with skipping versions in migration, features deprecated in later versions, checking software prerequisites, and rebinding plans and packages to adjust to changes in access paths. The document aims to provide guidance on planning a smoother migration process.
Quantum dots (QD) are semiconductors made via several possible routes. John Ashmead discusses how they are made, their properties and their applications in research.
The document discusses database design and relational database management systems. It covers key concepts like normalization, primary keys, foreign keys, and relationships between tables. Normalization is the process of organizing data to eliminate redundancy and ensure data is stored correctly. There are five normal forms with third normal form being sufficient for most applications. Tables are related through primary and foreign keys and different types of relationships can exist between tables like one-to-one, one-to-many, and many-to-many.
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.
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.
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.
Planning and executing a DB2 11 for z/OS Migration by Ian Cook Surekha Parekh
This document discusses planning and executing a migration from DB2 10 to DB2 11 for z/OS. It begins with an overview of the DB2 11 Early Support Program (ESP) feedback, which was positive regarding performance, quality, and reliability. The presentation then covers key aspects of developing a migration project plan, including assembling a project team, identifying technical considerations, and creating a test plan. It emphasizes early elimination of risks and issues. Sample project frameworks are provided to help structure planning and testing across sandbox, development, and production environments. Attendees are advised to contact software vendors to coordinate DB2 version requirements.
This document discusses considerations for migrating to DB2 10 from earlier versions. It notes that IBM is ending support for DB2 V8 in 2012, prompting many organizations to migrate. Key topics covered include potential issues with skipping versions in migration, features deprecated in later versions, checking software prerequisites, and rebinding plans and packages to adjust to changes in access paths. The document aims to provide guidance on planning a smoother migration process.
Quantum dots (QD) are semiconductors made via several possible routes. John Ashmead discusses how they are made, their properties and their applications in research.
The document discusses database design and relational database management systems. It covers key concepts like normalization, primary keys, foreign keys, and relationships between tables. Normalization is the process of organizing data to eliminate redundancy and ensure data is stored correctly. There are five normal forms with third normal form being sufficient for most applications. Tables are related through primary and foreign keys and different types of relationships can exist between tables like one-to-one, one-to-many, and many-to-many.
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!
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.
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.
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 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!
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.
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.
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/
Phenomics assisted breeding in crop improvementIshaGoswami9
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Travis Hills' Endeavors in Minnesota: Fostering Environmental and Economic Pr...Travis Hills MN
Travis Hills of Minnesota developed a method to convert waste into high-value dry fertilizer, significantly enriching soil quality. By providing farmers with a valuable resource derived from waste, Travis Hills helps enhance farm profitability while promoting environmental stewardship. Travis Hills' sustainable practices lead to cost savings and increased revenue for farmers by improving resource efficiency and reducing waste.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
The debris of the ‘last major merger’ is dynamically youngSérgio Sacani
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
ESPP presentation to EU Waste Water Network, 4th June 2024 “EU policies driving nutrient removal and recycling
and the revised UWWTD (Urban Waste Water Treatment Directive)”
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...AbdullaAlAsif1
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
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.
3. http://timeandquantummechanics.comA Quantum of Mystery - Balticon, May 24th, 2014
``We choose to examine a phenomenon which is impossible,
absolutely impossible, to explain in any classical way, and
which has in it the heart of quantum mechanics.”
4. http://timeandquantummechanics.comA Quantum of Mystery - Balticon, May 24th, 2014
John,
For my advanced 3D
students, I have a practicum
class. I find a client, set up a
modeling/animation project
or projects, and put the two
together
.…
And one of the things I'd
wanted to ask you about at
Necronomicon was about the
double slit experiment.
Best,
Larry
28. http://timeandquantummechanics.comA Quantum of Mystery - Balticon, May 24th, 2014
``In reality, it contains the only mystery. We cannot make the
mystery go away by 'explaining' how it works. We will just tell
you how it works. In telling you how it works we will have told
you about the basic peculiarities of all quantum mechanics.''
30. http://timeandquantummechanics.comA Quantum of Mystery - Balticon, May 24th, 2014
Roll Credits
• Larry Latham: Lovecraft is
Missing
• Richard Feynman: On the
Character of Physical Law
• Brian Greene: several books,
lots of stuff on youtube, great
speaker
Editor's Notes
Inspired by question from Larry Latham.
He & his animation class did some of the clips you see here.
Unfortunately he passed away before he could finish.
See his remarkable blog, Lovecraft is Missing, for one of the best webcomics around.
And this talk is dedicated to the memory of Larry: we never met in person, but we nevertheless had a meeting of the minds.
You are missed!
``In this chapter we shall tackle immediately the basic element of the mysterious behavior in its most strange form. We choose to examine a phenomenon which is impossible, absolutely impossible, to explain in any classical way, and which has in it the heart of quantum mechanics. In reality, it contains the only mystery. We cannot make the mystery go away by 'explaining' how it works. We will just tell you how it works. In telling you how it works we will have told you about the basic peculiarities of all quantum mechanics.''
Not mathematical or too cute, but give a sense of the experiment itself
There will be a quiz at the end, but fear not, is open mind
Vary by wavelength, size of gates, & so on
Have this on order, lots of bits on youtube
Shows up a lot.
Good graphics of the double slit experiment
Will have stuff to say about the content
Post clip (check for length), note that draws inferences about consciousness & the quantum which are unwarranted: much impact from the observer, but the observer can be a chunk of silicon
from Larry Latham & his team
Larry’s web comic, and not a bad description of how people like Einstein felt about Quantum Mechanics!
Animate the double slit experiment! (see lecture description)
There will be a quiz at the end, but, no worries, it will be open mind
“When I hear you give your reasons,” I remarked, “the thing always appears to me to be so ridiculously simple that I could easily do it myself, though at each successive instance of your reasoning, I am baffled until you explain your process. And yet I believe that my eyes are as good as yours.”
“Quite so,” he answered, lighting a cigarette, and throwing himself down into an armchair. “You see, but you do not observe. The distinction is clear. For example, you have frequently seen the steps which lead up from the hall to this room.”
“Frequently.”
“How often?”
“Well, some hundreds of times.”
“Then how many are there?”
“How many? I don't know.”
“Quite so! You have not observed. And yet you have seen. That is just my point. Now, I know that there are seventeen steps, because I have both seen and observed.”
— started clip at start
Try this at home; but do not look down the laser with your remaining good eye
Edge diffraction!
From Nova & Brian Greene, very good representation of the wave function.
Note slant
Character of physical law
has been talking about the double slit
on the left, the bullet diagrams: two humps added together, on the right, the interference pattern
One of the great teachers
Cut a bit from the end
Meaning of the heisenberg uncertainty principle:
tunneling & radioactivity
transitors
at every level: which path, energy versus time, momentum versus position
without quantum mechanics we all vanish in a puff of logic
existence of you & me: uncertainty in position increases uncertainty in momentum, minimum energy point is an order of magnitude description of atomic energy levels
Note that the wavicle & the path picture are complementary, can see a wavicle as a whole bunch of paths that are traveling together for a bit, can see a path as the track of a small bit of a wavicle (a small bit that sometimes spends time out in the great black or in nearby other wavicles)
Paths & branching universes
Path integrals very appropriate
50/50 or 0/100 with beam splitter (function of the exact optical path length)
two slits at start
they go thru a prism that emits two photons each with 1/2 the energy, so you can look at one & make inferences about the other
top on goes to D0, you can see the interference pattern (or not)
bottom one can have come from top or bottom.
gets diverged by a prism (PS)
if from top, goes on red path.
thru BSb
D4? then we know it came thru top & so did other
but if not, reflected off Mb & thru (sort of Bsc)
hold that thought
Bottom one same idea
hits BSa
if goes right, hits D3, ok the photon went thru bottom slit
if not, hits Ma, BSc (which is getting a bit of a work out here)
OK if a photon is detected at D2 or D1, it comes from both!, you can’t tell
now use coincidence to spot
if D3 or D4, no interference
if D2 or D1 no path, but interference
but the merging & splitting happened after the first one hit!
add all the patterns together, just a giant lump, no help there
can’t send signal back in time with this
see in terms of path integrals, mostly easily
And they are still more complex: loop back & thru again!
True of a single slit as well, actually
animation of hang-glider
Pilot wave: particle at the center, sending out waves. Hang-glider exploiting thermals.
Bohmian has the best pictures. Breaks down at high energies/multiple particles. Just gets more & more complex.
Sliding doors
Choices; what if
Reminiscent of the paths above
The ? mark is your open mind quiz: take all the time you need, the rest of your life if you wish!
``In this chapter we shall tackle immediately the basic element of the mysterious behavior in its most strange form. We choose to examine a phenomenon which is impossible, absolutely impossible, to explain in any classical way, and which has in it the heart of quantum mechanics. In reality, it contains the only mystery. We cannot make the mystery go away by 'explaining' how it works. We will just tell you how it works. In telling you how it works we will have told you about the basic peculiarities of all quantum mechanics.''