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#phsyiological
clonehub · 2 months
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let us now consider the moment Kiki sees Hahkin and realizes it's really her, in the flesh after Order 66.
Hahkin's been trying to kill Jax. She thinks Jax is a danger to Kiki because she doesn't know about the chips and doesn't know Jax is safe. Kiki obviously puts herself between Jax and Hahkin and activates her lightsaber, ready to face off.
Hahkin pulls off her hood, then her mask. Kiki doesn't recognize her, not until Hahkin speaks and just says her name.
Then the Force opens, lets EVERYTHING in. Hahkin's Force signature, her small but constant presence that Kiki has known since they were six and seven years old. All the memories they shared, their most intimate moments.
Kiki's still got her lightsaber activated, but she's wide-eyed with shock and confusion. Her mind's completely ground to a halt and the only thought in her head is "I don't understand". Over and over and over. KIki felt Hahkin die. Kiki held a funeral for her. She moved on.
Hahkin steps down from the ledge she was on and carefully approaches Kiki, never once breaking eye contact. Hahkin puts her hand over Kiki's and deactivates her lightsaber. Then she lays a hand on Kiki's face, saying "it's me".
Once again: "I don't understand." Kiki almost believe it's her. It's got to be a trick of some kind. Maybe her use of the Dark Side of the Force is catching up to her. Maybe resisting the Force's touch is putting hallucinations in her head.
"It's me, Kiki. I'm alive."
I don't know if they hug at this point or if Jax interrupts them. I think Kiki's able to gather her wits enough to explain that Jax isn't going to hurt her, he's got his chip out, and they should all go. Notably, Kiki doesn't think twice about inviting Hahkin back to her home or being in close quarters with her on the ship.
To jax's credit he's actually taking everything in stride, despite the attempted killing bit. Kiki and Jax are in the cockpit and their way back and Hahkin is in another room because it's clear Kiki needs time to process the shock of it. Jax says she should go talk to Hahkin. Kiki says "I'm scared it's not really her".
"Go talk to her, Kiki."
"And say what?"
"Whatever needs to be said. Just go."
So Kiki shuffles off to the quarters they gave Hahkin. She's sitting on the bed. Kiki's still standing and just being awkward, but she feels bad because she knows Hahkin was expecting a more warm and welcome response than what Kiki gave her.
Hahkin pulls her shirt off to change it (it's nasty and gross) and reveals a series of blaster scars on her chest and stomach. There's one on her chest, almost dead center. Kiki's eyes fixate on it, and she reaches out and touches it. It's real. Hahkin says something to the effect of "That one almost got me, but I pulled through."
Kiki: I felt you die
Hahkin: I did die. For three minutes and thirteen seconds, I was phsyiologically dead. After they shot me, they put my body in a tent. The med droid got to me, did CPR and, when my life signs all faded away, shocked my heart. I came back.
Kiki: I didnt feel you come back.
Hahkin: but you feel me now, don't you?
Kiki does -- bright and alive. She pulls Hahkin in for a hug and finally accepts that her best friend survived.
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thoughtsunlimited · 3 years
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Never underestimate the power of planting a seed. #unmuteyourself by @fortismentalhealth is that seed we believe will #endstigma of #mentalhealth Lets #normalise visiting a #psychologist just like you would do for Fever, Cough, or physical health concerns. Your #phsyiological issues are a result of your thoughts. Lets #normalise the need to learn and understand how to #channlise the thoughts when you are unable to lead a #happier life. #psychologist #mentalhealth #counsellor #instagrammer #instapsychologists #mumbaihealth #mentalwellness #mentalillness #mentalillnessawareness (at Mumbai, Maharashtra) https://www.instagram.com/p/CN34y-_py37/?igshid=gom9ejaxjd7g
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Okay, so I had to do it to’em:
The villain: psychometrics
The hero: social psychology
The anti-hero: phsyiological psychology
The anti-villain: psychology of language
The noble demon: cognitive psychology
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cyclicallife · 5 years
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(This body of work makes me very proud!)
i have found that, over the years, i have become more and more incapable of fully expressing myself with words. i fancy myself a bit of a wordsmith, however when i re-read some of my writings, as proud as i am of them as individual pieces, i find that they are lacking something — some core piece that i have yet to extract. when looking back at my last entry, the one regarding my time in france and  the subsequent “breakdown”, i wonder if that which i was trying to pull from my chest, it the substance which was within me, was not a metaphor for trying endlessly to put words to my feelings and emotions. in many ways this makes sense; i didn’t understand what it was then, but i am starting to consider this. since this occurrence i am being presented with dreams, little fragments of this one particular image. i am standing, open mouthed, releasing only air while pulling the stringy substance from my chest.
i have relied on art throughout the years — in fact for the majority of my life i have done so. i distinctly remember one pottery class i took when i was 7 or 8 years old. we crafted simple coil pots, glazed them and, at the next class looked at our finished works fresh from the kiln. when i was glazing mine i was spending the majority of my time on the inside of the piece. i remember not really paying attention to the work as a whole, but rather working with a sort of feverish intensity on the inside. i have such a vivid memory of painting and painting, glazing and glazing the inner walls of the coil pot. i wanted the walls and, even more o the bottom, to be, upon firing, smooth, glass-like. i recall the bottom of the pot had accumulated so much glaze that a tiny puddle forming.
of course i look back now and place all these ideas and theories on why i was doing so, what i was trying to convey, etc. a part of me can’t help but look into this, to study this, not the actual piece, god knows it was that of a child, but at my intention. now, after 6 years of formal art training, most of which consisted of getting my ass kicked when my work was being torn apart during critique sessions, i certainly can’t help myself. the beauty of child, in terms of expressing and creating, is that they don’t drag so much theory and conceptual nonsense into it; a drawing of a dog is just that, a drawing of a dog. a coil pot with a puddle of glaze at the bottom is just that… a coil pot with a puddle of glaze at the bottom it.
i wanted the inside to look good. i remember thinking this. there is no theory or conceptual bullshit attached, this is what i remember wanting to do; i was curious about how it would look post-firing. i was interested in how it might look to others, too; a coil pot with a bottom both rich in color (i chose a deep blue) and as smooth as glass.
most of the time i fumble for words. my sister and i have a back and forth about this; she wants me to talk and open up and express that which i need at this time in my life and how said needs can be met. i am left frustrated, trying to manage these emotions upon which i can’t place a label — even though i so desperately want to! even with my psychologist, with whom i’ve been working with on a weekly basis since diagnosis, i find myself lacking the appropriate words. often, we will spend many-a-sessions working through an emotion or thought and then, after a laborious undertaking, we find the words needed… or, rather, some of the words needed. more often then not i speak too quickly. not necessarily in terms of speed, though i did struggle with a stammer as a child as my brain was moving too fast and i couldn’t formulate the words to match the momentum. but i speak without forethought. i fire off a thought without considering how it will be taken or interpreted. this has fucked up more relationships … i cringe now at some of the things i’ve inadvertently said. they weren’t meant to be harsh or cruel, as this is never my intention, they were just unfiltered, unrefined, unpolished, rough-around-the-edges, etc. etc. in an attempt to understand someone or probe a bit to gather more information, i’ll muddle things up to the point of no repair. Equally, it is my hope to find the appropriate words to express my own thoughts or feelings. it’s as if i’m casting a line and doing so in realtime, hoping i’ll reel something in that closely resembles my current state of mind, my emotions. this, too, can end poorly; going along and sharing, prattling on, seeking words on the fly … …
then, boom!… the realization of my faux pas is crystal clear.
in my opinion this is getting worse. i asked my neurologist about various aspects of this in terms of toxicity (multiple chemo agents specifically designed to penetrate the blood/brain barrier) and other phsyiological damages to the actual brain tissue itself such as scar tissue, narcotic tissue, etc. not to mention all the psychological shifts that undoubtedly impair various parts of my overall being. his response was reassuring, but also slightly disheartening. “it’s no wonder you’re functioning as well as you are, jeremiah.”
these psychological (and emotional!) shifts are event, especially considering the recent experience in france and the “breakdown” i experienced there.
i am working on a series of self-portraits to which i do attach theory and concept. after the recent experiences in france, as well as all these experiences as a whole, i am left with so many emotions, almost all of which i can’t articulate. i am left with pain and other emotions i can’t share because i simply don’t have the words! it is my hope that these portraits might, in some small way, express all that i so desperately want to share. they are already revealing so much to me; bit by bit, line by line, things are emerging.
for the majority of my life i have relied on art in one way or another. now, more than ever, i am turning to it not only as a place of refuge during these times, but to aid in my understanding of self and expressing and communicating that which is just under the surface and in need of release.
that which is already being revealed to me through my work, these ink drawings, through these portraits, are little steps in the direction of further healing.
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kindlecomparedinfo · 5 years
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Flexible stick-on sensors could wirelessly monitor your sweat and pulse
Flexible stick-on sensors could wirelessly monitor your sweat and pulse
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As people strive ever harder to minutely quantify every action they do, the sensors that monitor those actions are growing lighter and less invasive. Two prototype sensors from crosstown rivals Stanford and Berkeley stick right to the skin and provide a wealth of phsyiological data.
Stanford’s stretchy wireless “BodyNet”isn’t just flexible in order to survive being worn on the shifting surface of…
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un-enfant-immature · 5 years
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Flexible stick-on sensors could wirelessly monitor your sweat and pulse
As people strive ever harder to minutely quantify every action they do, the sensors that monitor those actions are growing lighter and less invasive. Two prototype sensors from crosstown rivals Stanford and Berkeley stick right to the skin and provide a wealth of phsyiological data.
Stanford’s stretchy wireless “BodyNet” isn’t just flexible in order to survive being worn on the shifting surface of the body; that flexing is where its data comes from.
The sensor is made of metallic ink laid on top of a flexible material like that in an adhesive bandage. But unlike phones and smart watches, which use tiny accelerometers or optical tricks to track the body, this system relies on how it is itself stretched and compressed. These movements cause tiny changes in how electricity passes through the ink, changes that are relayed to a processor nearby.
Naturally if one is placed on a joint, as some of these electronic stickers were, it can report back whether and how much that joint has been flexed. But the system is sensitive enough that it can also detect the slight changes the skin experiences during each heartbeat, or the broader changes that accompany breathing.
The problem comes when you have to get that signal off the skin. Using a wire is annoying and definitely very ’90s. But antennas don’t work well when they’re flexed in weird directions — efficiency drops off a cliff, and there’s very little power to begin with — the skin sensor is powered by harvesting RFID signals, a technique that renders very little in the way of voltage.
The second part of their work, then, and the part that is clearly most in need of further improvement and miniaturization, is the receiver, which collects and re-transmits the sensor’s signal to a phone or other device. Although they managed to create a unit that’s light enough to be clipped to clothes, it’s still not the kind of thing you’d want to wear to the gym.
The good news is that’s an engineering and design limitation, not a theoretical one — so a couple years of work and progress on the electronics front and they could have a much more attractive system.
“We think one day it will be possible to create a full-body skin-sensor array to collect physiological data without interfering with a person’s normal behavior,” Stanford professor Zhenan Bao in a news release.
Over at Cal is a project in a similar domain that’s working to get from prototype to production. Researchers there have been working on a sweat monitor for a few years that could detect a number of physiological factors.
Normally you’d just collect sweat every 15 minutes or so and analyze each batch separately. But that doesn’t really give you very good temporal resolution — what if you want to know how the sweat changes minute by minute or less? By putting the sweat collection and analysis systems together right on the skin, you can do just that.
While the sensor has  been in the works for a while, it’s only recently that the team has started moving towards user testing at scale to see what exactly sweat measurements have to offer.
“The goal of the project is not just to make the sensors but start to do many subject studies and see what sweat tells us — I always say ‘decoding’ sweat composition. For that we need sensors that are reliable, reproducible, and that we can fabricate to scale so that we can put multiple sensors in different spots of the body and put them on many subjects,” explained Ali Javey, Berkeley professor and head of the project.
As anyone who’s working in hardware will tell you, going from a hand-built prototype to a mass-produced model is a huge challenge. So the Berkeley team tapped their Finnish friends at VTT Technical Research Center, who make a specialty of roll-to-roll printing.
For flat, relatively simple electronics, roll-to-roll is a great technique, essentially printing the sensors right onto a flexible plastic substrate that can then simply be cut to size. This way they can make hundreds or thousands of the sensors quickly and cheaply, making them much simpler to deploy at arbitrary scales.
These are far from the only flexible or skin-mounted electronics projects out there, but it’s clear that we’re approaching the point when they begin to leave the lab and head out to hospitals, gyms, and homes.
The paper describing Stanford’s flexible sensor appeared this week in the journal Nature Electronics, while Berkeley’s sweat tracker was in Science Advances.
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detrans-thoughts · 7 years
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Week 1
CW: vaginas, period mention, libido, masturbation. 
I was on Reandron, which has a half-life of like 90 days, and I’m only a week out from when I was supposed to get my shot. Apparently, I shouldn’t expect any changes... but a couple of things do feel different. Two are probs more mental than phsyiological, but I’m mentioning them anyway  ¯\_(ツ)_/¯
1. Vaginal discharge - experiencing this for the first time in years. I woke up this morning and literally freaked out because I thought I’d gotten my period. (Cue me purchasing some period underwear in preparation.)
2. Sex drive - this could be a mental thing because I’m pretty anxious about everything going off T, but it feels like this has already dropped off. I had a veryyyy high sex drive on T (not so much before) - such that I would masturbate at least once a day, usually more. I haven’t felt the need in the past couple of days.
3. Emotions - I never experienced that loss of emotional sensitivity some people experience when going on T. If anything I became more emotional; I would literally cry from cat videos. Perhaps counter-intuitively, I currently feel a bit of distance from my emotions - like I’m not able to access them at present. This, I suspect, is probably a mental thing because I’m spending a lot energy trying to NOT freak out. 
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faggotaboutit · 5 years
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11.22.2019
I am at OQ penstock and I am not really feeling my applications and I’m feeling a little disenchanted because of the idea that I haven’t really connected with any prospective supervisors except for kind of Christina Hanhardt. I am also feeling discouraged around my writing samples. But also, there is such a real part of me that believes I belong in academia. I am getting healthier and healthier and getting stronger and stronger, and I am accessing more and more healing. I think that part of my healing is actualizing my pursuit into academia. I am also confident that I have another path in nonprofits, and another path in the private sector. What I want is to be able to confidently apply to these programs, and at least feel like I have a fighting chance in the way of having an interview or something at any of the universities I’m applying to.  I am leanring about polyvagal theory and how my issues are phsyiologically rooted in my unmyelenated vagus, under-diaphragmatic, down-regulated chaos. And my family is going to make chages that I cannot anticipate. What I do know is that I’m more and more becoming 
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cyberblogin · 5 years
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Flexible stick-on sensors could wirelessly monitor your sweat and pulse
Flexible stick-on sensors could wirelessly monitor your sweat and pulse
As people strive ever harder to minutely quantify every action they do, the sensors that monitor those actions are growing lighter and less invasive. Two prototype sensors from crosstown rivals Stanford and Berkeley stick right to the skin and provide a wealth of phsyiological data.
Stanford’s stretchy wireless “BodyNet”isn’t just flexible in order to survive being worn on the shifting surface…
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Text
I played a few basketball games today for the first time in months. I felt good physically for the first time in a while. I didn't eat and I was out of shape but it was a good start. I felt really good after. I had energy, my head was surprisingly clear for being tired and hungry. The endorphins are no joke I was talkative and in a good mood, the opposite of my depressed self lately. I ate dinner which was my first meal of the day. I ate a little more before bed but I was full but I knew I was still hungry. I accidentally fell asleep before I ate the snack before bed so I woke up hungry. On my way to losing 50 pounds from the middle of June to know I often couldn't sleep because I was hungry. This is normal, I'm not an "insomniac". It's a normal phsyiological reaction kind of like fight or flight. My body is like get up and get food, go hunt or something!
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The Compass of Balance and Order
More concept art for Lustre Zeal. While attempting to try and develop the look and feel of the world the characters interact with I've also been trying to learn how to balance the aesthetics that I enjoyed while growing up with more modern sensibilities as copying the past because it was a simpler time won't necessarily make you a better artist. If anything it just makes you look dated. Also development log.
Development Log 7.21.17
So between working on various pictures and time spent trying to piece my psyche back together, apparently the development of the self and the deconstruction of the ego can be arrested at various stages in the individuation process leading to psychoses that I've no doubt Freud would have had a field day with, I've been developing a model of thought based on the nature of the Artistic Identity, the use of Inner Vision and our relationship  to the social forces present in Emotional Economies to achieve what Jung would term 'a level of psychic functioning' that allows me to 'try and reach for an idea' without relying on the Extension of Self, Embodied Presence, the Avatar State, or the Panopticon Effect.  
Don't know what any of those things are? Good, that saves me the trouble of trying to explain them because doing so would involve talking about higher-order thinking and metastrategic knowledge and I don't feel like being here all day. Suffice it to say that the two most prevalent processes I've come across in terms of communicating the means by which an artist experiences the creative forces analogous to the ones they seek to convey is Method Acting and Stanislavski's System, and I don't think I need to tell you which is the one that I prefer. Or maybe I do because quite frankly Method Acting has some very scary side effects and has caused many an actor to come back as something other then themselves. Think Alia from Dune when she gives Baron Harkonnen a place in her mind after speaking with him in other memory. Yeah, not pretty. Anyway back to talking about Artistic Identities and whatnot. Because working on Lustre Zeal has involved making so many freaking design decisions, I've lost count at this point as the sheer complexity of the processes involved has forced me to seek out even greater levels of organization then the one's I already rely on, I've had to focus more on a core set of techniques rather then my usual experimental and iterative explorations of various form languages. Good god that sentence was an absolute mouthful. Let's try that again shall we. Because I prefer to draw characters with more realistic looking anatomy and proportions, I've had to focus on things like the Reilly Method of drawing for my use of construction, gesture drawing for establishing the pose, Frazetta's Emotional Core for my relationships and blah, blah, blah for everything else. Seriously, do you think I'd actually sit here and list off every single artist, actor, animator or director whose work that I've studied in order to form the very foundation that I reach for when I sit down to draw? Well, I could, but it would be a fairly long list and a lot of the names would be Japanese so let's just stick with the whole Artistic Identity and whatnot as the degree of knowledge involved in achieving the level of realism I desire is fairly high and requires an obscene amount of investment in terms of time and energy to actually learn. Having said that, because of the desire to establish one's self both emotionally and mentally is a process of self-actualization, I figured that something similar must be happening whenever artists sit down to draw, writers write or musicians compose, if not only because such an identity allows us to establish our own individual presence in an Emotional Economy but because it also allows us to recognize the visual appeal of our work as well as further understand and define the form language we use to communicate our ideas with both our audience and our peers. A matter which is not helped much by the fact that the rites of passage artists undergo and the harrowing that we experience while setting out on such a path tend to have the unfortunate effect of either destroying our egos utterly or leaving us completely disillusioned by the nature of the realities we choose to engage with. The fact that I scare the absolute shit out of most people when I talk normally is something I've had to live with my entire life, so imagine my surprise when the art that I sought to create and the stories I started to tell became a reflection of the self I'd long sought to hide in order to pass off as normal. I don't doubt Jung would refer to that as the Shadow seeking to express itself in an otherwise healthy way, but then again my pursuit of finding my own Self amidst the ruins of a life ruled over by the fear of what others cannot possibly imagine has been motivated more by a desire to end such intellectual isolation then anything else. Anyway, as an Artist and a Writer I have the freedom to act and think as I want without hindrance or restraint, but balance that with the need for a Persona which to embody and the need for an Artistic Identity becomes both an ego defence mechanism and a means of self expression. There are of course countless downsides to this as dissociation and supplantation can and do occur, watching that happen to celebrities is disturbing to say the least, but then knowing  the risks lessens the dangers so there is that. That said the purpose that I had in seeking out the concept of the Artistic Identity was because I wanted a way to discuss the idea of developing one's own Inner Vision without having to rely on the words 'feeling' or 'style' due to the incredibly vague connotations already associated with their use. Seriously, I hear those words used to describe everything related to art and it just grates against my mind because of how hollow and meaningless they are because if Art Deco is a style then no matter how much I may love it it isn't my 'style' its a style that I 'identify' with. Don't even get me started on 'feeling,' hoo boy, sensation is a much better word because not only can I externalize the concepts involved, I can internalize the information being gathered without harming my psyche in the process. But back to what I was originally saying, if we have an Internal Monologue, which can only be reported to exist as I know of no actual means by which to prove it exists save for maybe some form of telepresence or mind to machine transfer system, which in turn begs the question of machine learning and machine consciousness, it stands to reason that we also possess some form of Inner vision. By definition that would mean that if an Internal Monologue is about thinking in words, then Inner Vision is about thinking in pictures. Oh screw trying to dumb it down, there's a mode of meditation used in Vajrayana Buddhism that uses fully realized forms and sophisticated visualization techniques to create art. The fact it can also be used to achieve a substitution effect using imagined experiences that evoke the same cognitive and phsyiological consequences as their corresponding real world counterparts is in my mind an unintended bonus. Though not one I would personally prefer to try and teach someone as you can see by anything I try to draw, its a process that leaves little room for error and can seriously mess you up if you aren't aware of what the hell you're doing and what's going on. Seriously, ten years spent practicing a technique to achieve what people can experience in five minutes after eating a handful of mushrooms. Grumble, grumble, grumble . . . anyway, in order to differentiate one's own Inner Vision from, say, Mental Images or Mental Representation, its important to begin by distinguishing the idea of Inner Vision from the mathematical models and the spatial awareness skills we use to visualize objects as when attempting to represent an imaginary object rather then say, trying to recollect an object from memory in order to construct it, we rely on different visual processes to access and interact with the information in question. Which is to say that copying, transferring, transposing and transubstantiation all describe varying levels and degrees of the qualities we wish to ascribe to an object or form. Or in other words a sword can change its appearance to match its setting without altering its basic properties and still be recognized as a sword in spite of the differences between the artist's mental image of a sword and the way it appears in their own Inner Vision. And if that sounded confusing try applying the concept to architecture and you'll start to understand why so many artists default to the known forms that they've grown up with if only because doing so prevents them from experiencing the kind of trepidation and fear that comes from crossing through Liminal Space. Even I struggle with that one as the number of social constructs and intergenerational gaps that have created new and unprecedented chilling effects increase I find myself wondering what fresh new hell the masses have decided to pass off as popular opinion and commonly held belief. But then again the conflict that exists between attempting to establish one's own identity by rejecting the value systems of those who came before and the realization of one's own agency in a vanishing world is nothing new, its simply happening much faster now. Anyway, back to my point about developing one's Inner Vision, when we look for the primary influences that serve as the basis for the way we attempt to visualize objects, I found that focusing on those experiences that serve as our introduction to a work tend to form the foundation  we unconsciously reach for when we draw as not only do they often have largest amount of emotional investiture but the degree of familiarity with the subject matter cannot be matched by the increasingly complex mental and emotional needs imposed upon us by the realities present in an adult world. Or in other words, the reason why the things we enjoyed as children absorbed us so completely is because the fabric of the social realities  they presented us with served as a means of translating the elaborate social constructs of the adult worlds around us in a way that allowed us to relate to the events and forces that were shaping the geopolitical landscape of the time. The reason that I say this is because when I look back at many of the cartoons I grew up with I find myself seeing references to things that only those of us who were adults at the time would've recognized or even cared about. And this is in no way an isolated phenomena as not only is it present in my own work, but a few of the more recent cartoons that I've seen seem to be trying to reach a point where they appeal to both children and adults in a way that encourages parents to watch them with their kids so something to root for I suppose. That said, whenever I try to reach for an image in my mind that fits the parameters I've set in terms of design, I've found that comparing and contrasting it against things that already exist in reality is the only way to anchor the idea in a tangible way as asking myself to try and direct my own attention towards a certain emotion, theme, mood or even concept is all but impossible without associating my intent with some other established work. I suppose if I were to try and put it into words, its basically the difference between drawing, designing, and development. When I draw, I work from memory, when I design something I work from either an emotional intent or a previously established concept, when developing a novel or an illustration, I work with either a composition in mind or a set of parameters that in turn serve to define the work. Case in point when trying to visualize the Tower of Zeal I needed something that was simple enough to draw over and over again, and yet different enough from the rest of the surrounding architecture that no one would ever mistake it for having been built by the local population. Seeing that in my own mind on the other hand meant I couldn't rely on simply trying to copy pre-existing objects or styles even though doing so helps to familiarize us with the form language that human's use to try and express concepts like reverence and worship. That and ornamentation, people love ornamentation to the point that it is rare to see a truly blank surface anywhere in art or architecture. Anyway, I think that's enough rambling from me. As I said I'm still trying to develop the concept of the Artistic Identity and the function of Inner Vision so if I'm even less coherent then usual that would be why. Until next time folks, have a good one.
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fntstc · 10 years
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Unstables!
I am as unstable as you are, which means you are as unstable as i am. And this makes me hate you so much and love you so much at the same time. You probably know.
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kindlecomparedinfo · 5 years
Text
Flexible stick-on sensors could wirelessly monitor your sweat and pulse
As people strive ever harder to minutely quantify every action they do, the sensors that monitor those actions are growing lighter and less invasive. Two prototype sensors from crosstown rivals Stanford and Berkeley stick right to the skin and provide a wealth of phsyiological data.
Stanford’s stretchy wireless “BodyNet” isn’t just flexible in order to survive being worn on the shifting surface of the body; that flexing is where its data comes from.
The sensor is made of metallic ink laid on top of a flexible material like that in an adhesive bandage. But unlike phones and smart watches, which use tiny accelerometers or optical tricks to track the body, this system relies on how it is itself stretched and compressed. These movements cause tiny changes in how electricity passes through the ink, changes that are relayed to a processor nearby.
Naturally if one is placed on a joint, as some of these electronic stickers were, it can report back whether and how much that joint has been flexed. But the system is sensitive enough that it can also detect the slight changes the skin experiences during each heartbeat, or the broader changes that accompany breathing.
The problem comes when you have to get that signal off the skin. Using a wire is annoying and definitely very ’90s. But antennas don’t work well when they’re flexed in weird directions — efficiency drops off a cliff, and there’s very little power to begin with — the skin sensor is powered by harvesting RFID signals, a technique that renders very little in the way of voltage.
The second part of their work, then, and the part that is clearly most in need of further improvement and miniaturization, is the receiver, which collects and re-transmits the sensor’s signal to a phone or other device. Although they managed to create a unit that’s light enough to be clipped to clothes, it’s still not the kind of thing you’d want to wear to the gym.
The good news is that’s an engineering and design limitation, not a theoretical one — so a couple years of work and progress on the electronics front and they could have a much more attractive system.
“We think one day it will be possible to create a full-body skin-sensor array to collect physiological data without interfering with a person’s normal behavior,” Stanford professor Zhenan Bao in a news release.
Over at Cal is a project in a similar domain that’s working to get from prototype to production. Researchers there have been working on a sweat monitor for a few years that could detect a number of physiological factors.
Normally you’d just collect sweat every 15 minutes or so and analyze each batch separately. But that doesn’t really give you very good temporal resolution — what if you want to know how the sweat changes minute by minute or less? By putting the sweat collection and analysis systems together right on the skin, you can do just that.
While the sensor has  been in the works for a while, it’s only recently that the team has started moving towards user testing at scale to see what exactly sweat measurements have to offer.
“The goal of the project is not just to make the sensors but start to do many subject studies and see what sweat tells us — I always say ‘decoding’ sweat composition. For that we need sensors that are reliable, reproducible, and that we can fabricate to scale so that we can put multiple sensors in different spots of the body and put them on many subjects,” explained Ali Javey, Berkeley professor and head of the project.
As anyone who’s working in hardware will tell you, going from a hand-built prototype to a mass-produced model is a huge challenge. So the Berkeley team tapped their Finnish friends at VTT Technical Research Center, who make a specialty of roll-to-roll printing.
For flat, relatively simple electronics, roll-to-roll is a great technique, essentially printing the sensors right onto a flexible plastic substrate that can then simply be cut to size. This way they can make hundreds or thousands of the sensors quickly and cheaply, making them much simpler to deploy at arbitrary scales.
These are far from the only flexible or skin-mounted electronics projects out there, but it’s clear that we’re approaching the point when they begin to leave the lab and head out to hospitals, gyms, and homes.
The paper describing Stanford’s flexible sensor appeared this week in the journal Nature Electronics, while Berkeley’s sweat tracker was in Science Advances.
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