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Search - "spatial"
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Mountain climbing. Increases social skills, teamwork and trust.
Building a house. Increases spatial visualization and planning skills.
Electronics. Increases mathematical and problem solving skills.
Chemistry. Increases precision and analytical reasoning skills.
Psychedelic drugs. Increases imagination, inspiration and abstraction skills.24 -
---WiFi Vision: X-Ray Vision using ambient WiFi signals now possible---
“X-Ray Vision” using WiFi signals isn’t new, though previous methods required knowledge of specific WiFi transmitter placements and connection to the network in question. These limitations made WiFi vision an unlikely security breach, until now.
Cybersecurity researchers at the University of California and University of Chicago have succeeded in detecting the presence and movement of human targets using only ambient WiFi signals and a smartphone.
The researchers designed and implemented a 2-step attack: the 1st step uses statistical data mining from standard off-the-shelf smartphone WiFi detection to “sniff” out WiFi transmitter placements. The 2nd step involves placement of a WiFi sniffer to continuously monitor WiFi transmissions.
Three proposed defenses to the WiFi vision attack are Geofencing, WiFi rate limiting, and signal obfuscation.
Geofencing, or reducing the spatial range of WiFi devices, is a great defense against the attack. For its advantages, however, geofencing is impractical and unlikely to be adopted by most, as the simplest geofencing tactic would also heavily degrade WiFi connectivity.
WiFi rate limiting is effective against the 2nd step attack, but not against the 1st step attack. This is a simple defense to implement, but because of the ubiquity of IoT devices, it is unlikely to be widely adopted as it would reduce the usability of such devices.
Signal obfuscation adds noise to WiFi signals, effectively neutralizing the attack. This is the most user-friendly of all proposed defenses, with minimal impact to user WiFi devices. The biggest drawback to this tactic is the increased bandwidth of WiFi consumption, though compared to the downsides of the other mentioned defenses, signal obfuscation remains the most likely to be widely adopted and optimized for this kind of attack.
For more info, please see journal article linked below.
https://arxiv.org/pdf/...9 -
Note that the example tags for rants includes Xcode... There is a reason.
In 1984 Apple introduced Macintosh and we got a computer that could barely handle multiple windows on the screen. But by 1986 multiple windows all over the place.
In 1985 Microsoft introduced Window 1.0 Yes boys and girls, no "s" because it hand only one Window. 7 years later in 1992 Microsoft got their head out of their ass and produced "MDI" or Multiple Document Interface and woohoo, had multiple windows on the screen... big boy pants 8 years after Mac.
Today we have Xcode from Apple. The old Window 1.0 engineers are apparently alive and well as Xcode is a One Window Trick Pony and if you fight with it, it starts randomly jamming your separate Windows into tabs into one window, completely fucking up your spatial organization of your working source code.
It is like the bastards going into a blind man's house and re-arranging his furniture for fun.
Xcode - it's only free if your time is worth absolutely nothing.5 -
-- This is my first rant so sorry if it's bad--
We have a nice project that I am working on that needs to store and interact with location data. It is a .NET Core API using Entity Framework Core to interact with the database. All good and well. Until today when I started working on the implementation of storing location data we retrieve from mobile devices.
SQL has a nice data type named: "Geography" which can store a location and do calculations on it with queries. Such as proximity and distance which is what we need.
But then it turns out that EntityFramework Core does not have support for the Spatial data types. even though version 6 did have Spatial support.
Then i found the following issue on GitHub: https://github.com/aspnet/...
Turns out this feature has been requested since 2014 and is even on the "High-priority" list and is still not implemented to this day. Even though in the issue many people are asking to have this implemented.
WHY IS THIS TAKING SO LONG MICROSOFT!!
So now i have to figure out how to work around this. But that is an issue for tomorrow.1 -
Im listening to 8D music (sound vibrations in 8 dimensions) and it is weird as fuck
Feels like i am in a giant and small room in the same time, at place A while being at place B in the same time because the vibrations cycle around you to create an illusion of offset spatial divergence11 -
More from my big black book of ai and neuroscience:
I think if trace theory is true to any degree it would go some distance in explaining phenomenal consciousness, assuming I haven't misunderstood anything.
In fuzzy trace theory (FTT) it is posited that people form two types of mental representations about a past event:
*verbatim traces: detailed representations of a past event.
*gist traces: fuzzy representations of a past event.
People can reason with verbatim *and* gist traces but prefer gists.
*vision was suggested to work similarly in 1999. With human vision, two processes could be used: one that aggregates local receptive fields and one that parses the local receptive spatial field. It was suggested that people used prior experience, gists, to decide which dominates a perceptual decision.
Gist processes form representations of events, semantic details, where verbatim reinstates the context found in the surface details of an event.
__notes__
Parallel storage: asserts encoding/storage of verbatim/gist traces operate in *parallel*, not in serial.
I like to think of verbatim traces as databases, and gists as queries constructed by recognition.
Several studies have found that the meaning (gist) of an item is encoded even *before* the surface details (verbatim).
This might be important as a survival mechanism but should not be taken to mean strictly that gists are formed wholly *without* details or important and recognizable features of the item in question. It may well be for high level el processing and classification efficiency this may be an important reprocessing step, in the same way that many functions of the brain are duplicated throughout.5 -
Just finished a little proof of concept of a reprojected multisample antialiasing technique and daaaaamn it's looking good. First time ever a rendering technique I invented isn't complete shit so that's an improvement
It still has some (pretty big) issues with both spatial and temporal ghosting but I have some ideas in the pipeline
I wish I could show you guys comparison images but as it turns out most anti aliasing techniques look pretty good on still frames but only the good ones stand up under motion and I don't know of a good way right now to capture pixel perfect clips like that5 -
Design in Motion: Real-Time Rendering's Impact on Architecture
Architecture, a discipline that once relied heavily on blueprints, models, and lengthy render times, has undergone a revolutionary transformation in recent years. The advent of real-time rendering technology has fundamentally altered the way architects visualize, present, and interact with their designs. This paradigm shift has not only enhanced the creative process but has also empowered architects to make more informed decisions and create immersive experiences for clients and stakeholders.
Real-time rendering, a technological marvel that harnesses the power of high-performance graphics hardware and advanced software algorithms, allows architects to generate photorealistic visualizations of their designs in a matter of milliseconds. Gone are the days of waiting hours or even days for a single rendering to complete. This acceleration in rendering time has not only expedited the design process but has also encouraged architects to explore multiple design iterations rapidly.
One of the most significant impacts of real-time rendering on architecture is the ability to visualize a design in various lighting conditions and environmental settings. Architects can now instantly switch between daytime and nighttime lighting scenarios, experiment with different materials, and observe how their designs respond to different seasons or weather conditions. This level of dynamic visualization offers insights into how a building's appearance and functionality evolve throughout the day, contributing to more holistic and thoughtful design solutions.
Moreover, real-time rendering has transformed client presentations. Architectural concepts can now be communicated with unprecedented clarity and realism. Clients can virtually walk through spaces, observing intricate details, exploring different angles, and even experiencing the play of light and shadow in real-time. This immersive experience fosters a deeper understanding of the design intent, enabling clients to provide more targeted feedback and make informed decisions.
The impact of real-time rendering on collaboration within architectural teams cannot be overstated. Traditionally, architects and designers would need to wait for a rendering to complete before discussing design changes or improvements. With real-time rendering, team members can make adjustments on the fly, observing the immediate effects of their decisions. This seamless collaboration not only enhances efficiency but also encourages interdisciplinary collaboration as architects, engineers, and other stakeholders can work together in real-time to refine designs.
The integration of virtual reality (VR) and augmented reality (AR) into the architectural workflow is another transformative aspect of real-time rendering. Architects can now create VR environments that allow clients to step inside their designs and explore every nook and cranny. This not only enhances client engagement but also enables architects to identify potential design flaws or spatial issues that might not be apparent in 2D drawings. AR, on the other hand, overlays digital information onto the physical world, facilitating on-site decision-making and construction supervision.
Real-time rendering's impact extends beyond the design phase. It has proven to be a valuable tool for public engagement and community involvement in architectural projects. By creating virtual walkthroughs of proposed structures, architects can offer the public an opportunity to experience the design before construction begins. This transparency fosters a sense of ownership and allows for constructive feedback, contributing to the development of designs that resonate with the community's needs and aspirations.
The environmental implications of real-time rendering are also noteworthy. The ability to visualize designs in various environmental contexts contributes to more sustainable architecture. Architects can assess how natural light interacts with interior spaces, optimizing energy efficiency and reducing the need for artificial lighting during the day.
In conclusion, real-time rendering has ushered in a new era of architectural design, propelling the industry into a realm of dynamic visualization, immersive experiences, and enhanced collaboration. The ability to witness designs in motion, explore different lighting conditions, and interact with virtual environments has redefined how architects approach their craft. From facilitating client presentations to fostering sustainable design solutions, real-time rendering's impact on architecture is profound and multifaceted. As the technology continues to evolve, architects have an unprecedented opportunity to push the boundaries of creativity, efficiency, and sustainability in the built environment. -
When i took CS operating system class few years ago there was discussion on layout of memory and how to retrieve things faster. There was a point where we were asked question on locality and i was first to shoot my hand and prof looked at me : i was eager to answer locality of refrences, i knew temporal locality but i forgot the other one. That is when he told me to remeber Einstein and his space time principal. Instantly i remembered spatial locality. Till this date after so many years i remeber the concept! Woohoo to all the awesome teachers!!