And, sadly, in only 1 case... good ole police detective work (and the public that called in tips...).
Totally Agreed. Unfortunately, LEOs have been moving away from that, too.
Two Examples: Tips are what solve most crimes. But my local LEOs ignore tips and crime reports. It's the Santa Monica Police Department (SMPD), in CA.
(1) DVD from sec cam showing resident managing to get away from what appeared to be a forcible abduction and ????. She was brave and reported it. Our board culled through the footage to find a very clear video of the whole thing. Put it on a DVD for ease-of-use. When attempting to deliver the DVD, with the CASE NUMBER written on the DVD, the person got the run-around for over an hour. Someone finally took it, but I doubt it was even watched to see if the perp was known to them. Nothing.
(2) Mail package thieves. Again, high-res images of the two perps, each looking up into the sec camera. For one, the name and address was clearly and easily readable. Resident filed a report with SMPD. Later, again, a board member combed through video to provide full-page, time-stamped, CASE NUMBER labeled printouts of the guys in the act of stealing mail, a felony. The reaction of the SMPD deserves its own line here:
. . . . Santa Monica Police Department, "What do you want us to do with that?"
Both have massive ground based laser system designed to take out sats. In fact , ussr once threatened the shuttle by hitting it with a laser on the window. Purposely. Now, Russia AND china, have small sats about size of basketball that they are moving slowly by American sats. These are only useful as a first strike weapon. Basically, if we launch at attack, upon launching, we do not need the sats. OTOH, if Russia, and/or china, launch, then taking out sats first, give them a critical edge.
Those are probably "inspector satellites". They listen as they pass by. Every computer chip or electronic circuit with AC components is a little antenna, emitting radio waves of frequencies in accord with, say, a CPU's clock speed.
One of your 'basketballs' wouldn't need to have anything but a set of antennas to receive the RF leakage. It would just collect... Once it was done listening to exactly what is going on inside the US satellite's circuitry, it could just give a short puff to speed it up a bit along its orbital path. In a month or three, it would catch up with the 'mother ship', perhaps an innocuous weather satellite on a similar path, but 1/2-way around the planet from the target of the espionage.
Once close enough to home, it could just use near-field radio communications to dump its data to mommy — conceptually like WiFi or Bluetooth – omnidirectional so signal is only strong locally. Frequency-hop, do it in bursts, etc. The mother ship, big and always talking to the ground, could just weave the data into its usual stream down to earth. Once on earth, computer analysis could commence.
What could be learned? Oh, lots! The interest, at least on the first runs, would not be on what the satellite was doing at the time. Rather, the goal would be to determine the specs. of that bird's capabilities &/or functions. Specifications, as in how good is it at looking and listening? That's Top Secret and/or Program-specific Classified info – the kind that requires you to have serious clearances before you can go sit in a vault (a SCIF) and read the details. You can't take any notes with you when you're done, so you'd better enjoy memorization. . . or a nap.
So really, although your basketballs could be conventional shrapnel bombs, it is far more likely that they are Inspector Satellites, spying on adversaries' spy/comm satellites to learn their capabilities, specs, and possibly function. The US-SMC and NRO are crazy-protective of such information, as you might imagine.
Spot-on. The phenomenon is not new, either. Symantec got big in the late 1980's and early 1990's by awarding bounties for discovery of "new viruses". To help, they provided examples of 'known' viruses.
To a kid in high school or college, this was an easy $50.
* Copy one of their "examples"
* Change something very minor in a hex editor
* Use a printout or send code via a BBS (per-internet, remember?)
* Profit! (I did.)
And PROFIT Symantec did, too (Norton then). Why else, in the early days of the virus, do you think that there were sometimes 100 variations of a virus, with only a difference in text displayed, or a change in some other 'non-functional' part of the virus?
The answer, of course, was that Symantec could claim each month the 'discovery' of "a new variant(s) of a known virus", or similar. Please, anyone who recalls using Norton Antivirus way back then, think back. Do you remember this specific error message? I sure do.
Other interests have recognized the value of scare tactics and broken software since then, of course. But they were the ones who really kicked it off (on the public scale – with ads in PC World, etc. for the 'bounties').
This is simply a QC issue. Bolts were not tightened (or were absent?) in a single vehicle's driver-side seat-belt. It could have been a single oversight. Or, a disgruntled line-worker. Or, a tired one who has the flu. The first step, out of caution, is to recall all other vehicles assembled that day. The next; recall all that this person (or robot?) touched. Last, because we're talking about a life-saving device, and the work to check each one at the dealer is minimal, then it's the only reasonable thing to do. (A "no-brainer" decision, which is how Tesla is different from the big automakers, whose misbehavior has been known for decades. They keep getting caught, yet always seem to disregard human life over profits (assuming the secrets can be kept) again and again.)
So, Tesla undoubtedly out-sources their seat-belts to a vendor. It's a developed device, and not the focus of Tesla's R&D.
That said, installing the module properly in the Tesla factory is an extremely important thing. Tesla responded appropriately.
If the traces sop up solder well, perhaps tin or wave solder the board before putting on the mask? Solder is likely a lot more conductive than the printed traces. Or alternatively after the traces have been printed, put on a layer of solder paste and re-flow.
Yes. We have the same problem at the nanometer scale (10^-9 meter). We usually expose custom devices or circuits on that scale (for good reasons) by using an electron beam, directly writing it (like with a pencil) by electron beam lithography (EBL). Also, to either mill, or to deposit platinum metal traces, we use a focused ion-beam (FIB) instrument.
Although this is not news to many here, what is probably news to many here is that we have the same problem as the quoted poster mentioned. An etched trace is always best, in terms of low electrical resistance, in this case, too. We sometimes 'repair' or 'alter' computer chips by laying down some platinum, tungsten, etc. as a short between traces, or whatever, done also in the FIB.
WE HAVE THE SAME PROBLEM: The direct-written FIB-traces and 'printed traces' of the article are generally less conductive than the copper/metal-lithography layer used for the main circuit. Solder is OK, but not a great conductor, either; it lies somewhere in between the two.
For printing I use glossy magazine paper (just pages torn out of old magazines) because it's very thin and falls apart/dissolves easily in soapy water leaving just the toner on the board.
Yes! Glossy magazine paper is glossy for a reason. It has a thin layer of clay and a binder on its surface. That provides the gloss, smooth surface, and prevents image-bleed when in-press.
For you, the maker, this little layer is one reason the soapy-water transfer is so easy. Magazine paper's surface-coating is a water-soluble/removable layer. No worries about toner infiltrating the paper's fibers —there is that convenient layer in-between preventing it.
HINT: The soap in the last step is key, as it helps to disperse and deflocculate the clay, making it simple to wash away with water.
I use a laser printer, print on glossy magazine paper, put the paper toner-side-down on the PCB, run it through a high temp laminator, peal off the paper in soapy water, then etch.
Brilliant! Much easier than using a PMMA resist, as I suggested.
For those who don't know, laser printers use toner that's a mix of pigment and a wax/plastic binder. The last step your laser printer performs is to roll the paper over a "fuser", which melts the binder, securing the toner to the paper.
That is, the brilliant step in the quoted post is to use this fact to use the laserjet printout as the resist before etching the copper. Poster uses a 'high-temp laminator', but in a pinch, a household iron might do.
The $600 CNC mill/router is quite cool. Perhaps overkill for the circuit prototype, but that's OK.
(SIDE NOTE: This kind of 'home CNC' is a brilliant thing. Ever needed to replace a 'little plastic part' of your car, but that is only sold as part of a '$300 assembly?' Model it by whatever means, and then mill it from aluminum. The CNC would pay for itself in a year!)
RESPONDING TO THE VIDEO: Note that it began with a standard, copper-clad PCB piece, made for such projects, which have available for decades. This was probably just one of many demos for this product.
OTHER APPROACHES: A custom PCB can be achieved far more cheaply. I recall, in the 1980's, starting with one of these pre-clad PCBs. Then, laying down resist-tape, painting-in any gaps, and finally chemically etching the copper away to yield a one-off PCB.
In the 21st Century, it's even easier, even by rudimentary techniques. As someone else noted — use only a laser-jet, a UV or strong light source, and a spun-on resist layer (PMMA). Use the printout to do a 'contact exposure', the same as making a photographic 'contact print'. Dip in methanol to remove unexposed resist, and last dip into a copper etchant for a couple of minutes. Drill holes after.
Last, a Google search will undoubtedly find many vendors willing to do the above, and just mail the finished product to you. These guys are garage startups –enabling makers – but the garage is where it always starts
The assholes responsible for the Paris attacks communicated with each other via un-encrypted text messages. (Source: a Slashdot or Guardian story 1-2 days ago.)
Encryption back-doors and mass surveillance of an entire populace's electronic communications have no place in any discussion or law-making in the aftermath of the Paris event. It is just another example of the US taking advantage of a global tragedy for political leverage towards even more unconstitutional surveillance and sousveillance (if you carry a cell phone).
The events occurred in Paris, France – an ocean away from the US!
FTA: "I would prefer to see him (Snowden) hanged by the neck until he's dead" --- James Woolsey (frmr. Dir. CIA)
I recall hearing many calls, shortly after the Snowden disclosures, for this exact same punishment to befall both James Clapper (Dir. Natl. Intel.) and Ret. Gen. Keith Alexander (frmr. Dir. NSA). with the exact same wording as above, for their shenanigans -- revealed by Snowden. Of course, the clause predates the 20th Century; but still, choose your words wisely.
A Keith Alexander quote from the same source:
“I think any unauthorized disclosures made by individuals that have dishonored the oath of office, that they have raised their hand and attested to, undermines this nation’s security,” he said in response to a question about Snowden (Nov 18, 2015).
They still can't get their own facts straight, even after J. Kerry made the same mistake a year or so ago. Snowden was a Federal CONTRACTOR, meaning that he DID NOT take any oath of office. The oath is for Federal employees, appointees, and electees only. Contractors do not take an oath.
I just want to keep the facts straight. It aids discussion.
I don't know if I could function without Tab Groups any more. I have to project-hop, between a wide array of research or development areas, all the time.
For Example:
* Big literature surveys,
* Sets of companies in a sector,
* Patents in a family,
* Aspects of a collaborative project where time elapses between hearing-back from others.
I don't want to print all of that out, or to save a bunch of PDFs! I just Group the Tabs, and use Tab Groups basically like 'workspace switching'. After discovering tab groups, and dealing with their fiddly implementation (early v.), it was absolutely worth that effort. Firefox then started to:
* Launch far faster
* Remain light on the CPU & WiFi – because Tab Groups don't load until (re-)selected.
* Have order in my life, with one "Projects" window, and a separate, general browsing window.
Does anyone know how we Tab-Group users can deal with this change? At least, other than:
(a) never updating FF, or
(b) having to live with 20 open windows, each full of tabs, but each also lacking a LABEL as to its topic/name?
However, in a suspension bridge with a suspended roadway, the chains or cables support the weight of the bridge, and so do not hang freely. In most cases the roadway is flat, so when the weight of the cable is negligible compared with the weight being supported, the force exerted is uniform with respect to horizontal distance, and the result is a parabola...
Correct. Ideally, it will be a parabola.
I could have saved some time by reading comments before my wordier posting, above...
A cable hanging freely from two fixed points will form a catenary –like the wires between telephone poles.
This is not the case with a suspension bridge, where additional, vertical cables are strung every 20 or 40 meters, in order to support the road deck. The resultant shape is not a catenary. Probably closer to a parabola, as the cable is supporting not only its own weight along its length, but also the decking in periodic increments.
Each suspension bridge differs slightly, depending upon the weight factors of the various components. Finite element analysis is probably the only reliable way to determine the mathematical shape of the arc. (Or just take a photo.)
I have eight (8) cores on my laptop. Frequently, a single multiprocessor-unaware application will hog an entire core, getting it hot, while asking nothing of the other seven (7). These applications are typically very expensive ones, so you might think that they would make use of them.
Oh, but no. Give me two cores, 100 cores, or anywhere in between. I, as a power-user, will actually never notice a difference.
Get the programmers to write MPA software. Only then will I think about believing the hype about multiple cores.
The way US police are trained to interrogate people is focused entirely on eliciting a confession. It results in a shockingly high false confession rate.
You are spot-on. This is indeed shockingly quite true.
We differ only in our application of the word "interrogator."
I never use the "P-word" to refer to US 'law-enforcement' officers. Thus, I do not consider them to be interrogators, because they are not, at least by the true meaning of the word.
You forgot to mention the Supreme Court decision interpreting that, "it is not illegal for cops to lie to your face, even if it is done to elicit a confession."
That's not your imagination kind sir or madame, it's a fact. This "device" is less effective than someone trained to pickup "tells".
Yep. Learn to read micro-expressions. They are true tells. For example, sudden pupil dilations, flushing, or the few other tells that are autonomic.
Just don't confuse these with the witch-doctor "tells", such as: "If the subject looks to the right before replying, then he is lying." Ugh. Those generalizations are voodoo, and have nothing to do with human physiology. If your current manager believes in those things, then you should: (1) Exploit them to the max, while (2) Finding a better job.
PS — Sociopaths make for excellent liars and car salesmen; but oh, I am repeating myself.
An intelligent person will recognize when the 'polygrapher' has moved from the baseline questions to the particular 'question(s) of interest.'
I would notice, and would be nervous simply because of that realization, regardless of the 'true' answer to the question(s). Like you, I can tell an innocuous question from a 'gotcha' type of question, and those things, in such a situation, would stress me out. Just knowing that a trained monkey is firing what he thinks is his secret bullet will peg the body-signal charts. The correlation of my answer to 'truthiness' will be irrelevant to the operator's "decision based on the quantitative (but unrelated) data taken during questioning."
A solidly trained and experienced interrogator will get all of the information that he wants out of you –and you will provide it willingly. THAT is what real interrogation is about.
OTOH, the torture thing (as is the fashion in this day) produces nothing of value, only statements that the tortured person thinks are likely make the torture stop.
I mean, yeah, torture is a War Crime and all. Sure. To each his own. And don't even bother trying to use moral arguments against torture. All you need do is simply to apply a basic "cost-benefit analysis", like any MBA might do. There is no "value proposition" of any note. Plus, the ROI, what with all of the lawsuits and war-crimes tribunals that might follow, is simply not there. Invest elsewhere.
Slashdot Mirror
And, sadly, in only 1 case ... good ole police detective work (and the public that called in tips...).
Totally Agreed. Unfortunately, LEOs have been moving away from that, too.
Two Examples: Tips are what solve most crimes. But my local LEOs ignore tips and crime reports. It's the Santa Monica Police Department (SMPD), in CA.
(1) DVD from sec cam showing resident managing to get away from what appeared to be a forcible abduction and ????. She was brave and reported it. Our board culled through the footage to find a very clear video of the whole thing. Put it on a DVD for ease-of-use. When attempting to deliver the DVD, with the CASE NUMBER written on the DVD, the person got the run-around for over an hour. Someone finally took it, but I doubt it was even watched to see if the perp was known to them. Nothing.
(2) Mail package thieves. Again, high-res images of the two perps, each looking up into the sec camera. For one, the name and address was clearly and easily readable. Resident filed a report with SMPD. Later, again, a board member combed through video to provide full-page, time-stamped, CASE NUMBER labeled printouts of the guys in the act of stealing mail, a felony. The reaction of the SMPD deserves its own line here:
. . . . Santa Monica Police Department, "What do you want us to do with that?"
I shit you not. Those were the words.
These are but two examples from a list of many...
Both have massive ground based laser system designed to take out sats. In fact , ussr once threatened the shuttle by hitting it with a laser on the window. Purposely. Now, Russia AND china, have small sats about size of basketball that they are moving slowly by American sats. These are only useful as a first strike weapon. Basically, if we launch at attack, upon launching, we do not need the sats. OTOH, if Russia, and/or china, launch, then taking out sats first, give them a critical edge.
Those are probably "inspector satellites". They listen as they pass by. Every computer chip or electronic circuit with AC components is a little antenna, emitting radio waves of frequencies in accord with, say, a CPU's clock speed.
One of your 'basketballs' wouldn't need to have anything but a set of antennas to receive the RF leakage. It would just collect... Once it was done listening to exactly what is going on inside the US satellite's circuitry, it could just give a short puff to speed it up a bit along its orbital path. In a month or three, it would catch up with the 'mother ship', perhaps an innocuous weather satellite on a similar path, but 1/2-way around the planet from the target of the espionage.
Once close enough to home, it could just use near-field radio communications to dump its data to mommy — conceptually like WiFi or Bluetooth – omnidirectional so signal is only strong locally. Frequency-hop, do it in bursts, etc. The mother ship, big and always talking to the ground, could just weave the data into its usual stream down to earth. Once on earth, computer analysis could commence.
What could be learned? Oh, lots! The interest, at least on the first runs, would not be on what the satellite was doing at the time. Rather, the goal would be to determine the specs. of that bird's capabilities &/or functions. Specifications, as in how good is it at looking and listening? That's Top Secret and/or Program-specific Classified info – the kind that requires you to have serious clearances before you can go sit in a vault (a SCIF) and read the details. You can't take any notes with you when you're done, so you'd better enjoy memorization. . . or a nap.
So really, although your basketballs could be conventional shrapnel bombs, it is far more likely that they are Inspector Satellites, spying on adversaries' spy/comm satellites to learn their capabilities, specs, and possibly function. The US-SMC and NRO are crazy-protective of such information, as you might imagine.
I heard the above from SWIM.
Please recall the web of treaties, designed with the same purpose in mind, that led to WW I.
P.S. what is deal of using noun always in singular without article?
Or of using a noun as an adverb to start the third sentence?
I suppose that a hyphen could have done the job just as well.
Cheer up, you have almost a 7% chance of being immortal, statistically speaking.
That is, 6.5% of all humans ever born are alive today [REF prb.org]. The others just didn't make it.
MOD PARENT UP!
Spot-on. The phenomenon is not new, either. Symantec got big in the late 1980's and early 1990's by awarding bounties for discovery of "new viruses". To help, they provided examples of 'known' viruses.
To a kid in high school or college, this was an easy $50.
* Copy one of their "examples"
* Change something very minor in a hex editor
* Use a printout or send code via a BBS (per-internet, remember?)
* Profit! (I did.)
And PROFIT Symantec did, too (Norton then). Why else, in the early days of the virus, do you think that there were sometimes 100 variations of a virus, with only a difference in text displayed, or a change in some other 'non-functional' part of the virus?
The answer, of course, was that Symantec could claim each month the 'discovery' of "a new variant(s) of a known virus", or similar. Please, anyone who recalls using Norton Antivirus way back then, think back. Do you remember this specific error message? I sure do.
Other interests have recognized the value of scare tactics and broken software since then, of course. But they were the ones who really kicked it off (on the public scale – with ads in PC World, etc. for the 'bounties').
This is simply a QC issue. Bolts were not tightened (or were absent?) in a single vehicle's driver-side seat-belt. It could have been a single oversight. Or, a disgruntled line-worker. Or, a tired one who has the flu. The first step, out of caution, is to recall all other vehicles assembled that day. The next; recall all that this person (or robot?) touched. Last, because we're talking about a life-saving device, and the work to check each one at the dealer is minimal, then it's the only reasonable thing to do. (A "no-brainer" decision, which is how Tesla is different from the big automakers, whose misbehavior has been known for decades. They keep getting caught, yet always seem to disregard human life over profits (assuming the secrets can be kept) again and again.)
So, Tesla undoubtedly out-sources their seat-belts to a vendor. It's a developed device, and not the focus of Tesla's R&D.
That said, installing the module properly in the Tesla factory is an extremely important thing. Tesla responded appropriately.
If the traces sop up solder well, perhaps tin or wave solder the board before putting on the mask? Solder is likely a lot more conductive than the printed traces. Or alternatively after the traces have been printed, put on a layer of solder paste and re-flow.
Yes. We have the same problem at the nanometer scale (10^-9 meter). We usually expose custom devices or circuits on that scale (for good reasons) by using an electron beam, directly writing it (like with a pencil) by electron beam lithography (EBL). Also, to either mill, or to deposit platinum metal traces, we use a focused ion-beam (FIB) instrument.
Although this is not news to many here, what is probably news to many here is that we have the same problem as the quoted poster mentioned. An etched trace is always best, in terms of low electrical resistance, in this case, too. We sometimes 'repair' or 'alter' computer chips by laying down some platinum, tungsten, etc. as a short between traces, or whatever, done also in the FIB.
WE HAVE THE SAME PROBLEM: The direct-written FIB-traces and 'printed traces' of the article are generally less conductive than the copper/metal-lithography layer used for the main circuit. Solder is OK, but not a great conductor, either; it lies somewhere in between the two.
For printing I use glossy magazine paper (just pages torn out of old magazines) because it's very thin and falls apart/dissolves easily in soapy water leaving just the toner on the board.
Yes! Glossy magazine paper is glossy for a reason. It has a thin layer of clay and a binder on its surface. That provides the gloss, smooth surface, and prevents image-bleed when in-press.
For you, the maker, this little layer is one reason the soapy-water transfer is so easy. Magazine paper's surface-coating is a water-soluble/removable layer. No worries about toner infiltrating the paper's fibers —there is that convenient layer in-between preventing it.
HINT: The soap in the last step is key, as it helps to disperse and deflocculate the clay, making it simple to wash away with water.
I use a laser printer, print on glossy magazine paper, put the paper toner-side-down on the PCB, run it through a high temp laminator, peal off the paper in soapy water, then etch.
Brilliant! Much easier than using a PMMA resist, as I suggested.
For those who don't know, laser printers use toner that's a mix of pigment and a wax/plastic binder. The last step your laser printer performs is to roll the paper over a "fuser", which melts the binder, securing the toner to the paper.
That is, the brilliant step in the quoted post is to use this fact to use the laserjet printout as the resist before etching the copper. Poster uses a 'high-temp laminator', but in a pinch, a household iron might do.
The $600 CNC mill/router is quite cool. Perhaps overkill for the circuit prototype, but that's OK.
(SIDE NOTE: This kind of 'home CNC' is a brilliant thing. Ever needed to replace a 'little plastic part' of your car, but that is only sold as part of a '$300 assembly?' Model it by whatever means, and then mill it from aluminum. The CNC would pay for itself in a year!)
RESPONDING TO THE VIDEO: Note that it began with a standard, copper-clad PCB piece, made for such projects, which have available for decades. This was probably just one of many demos for this product.
OTHER APPROACHES: A custom PCB can be achieved far more cheaply. I recall, in the 1980's, starting with one of these pre-clad PCBs. Then, laying down resist-tape, painting-in any gaps, and finally chemically etching the copper away to yield a one-off PCB.
In the 21st Century, it's even easier, even by rudimentary techniques. As someone else noted — use only a laser-jet, a UV or strong light source, and a spun-on resist layer (PMMA). Use the printout to do a 'contact exposure', the same as making a photographic 'contact print'. Dip in methanol to remove unexposed resist, and last dip into a copper etchant for a couple of minutes. Drill holes after.
Last, a Google search will undoubtedly find many vendors willing to do the above, and just mail the finished product to you. These guys are garage startups –enabling makers – but the garage is where it always starts
Oops, forgot to mention my main point.
The assholes responsible for the Paris attacks communicated with each other via un-encrypted text messages . (Source: a Slashdot or Guardian story 1-2 days ago.)
Encryption back-doors and mass surveillance of an entire populace's electronic communications have no place in any discussion or law-making in the aftermath of the Paris event. It is just another example of the US taking advantage of a global tragedy for political leverage towards even more unconstitutional surveillance and sousveillance (if you carry a cell phone).
The events occurred in Paris, France – an ocean away from the US!
FTA: "I would prefer to see him (Snowden) hanged by the neck until he's dead" --- James Woolsey (frmr. Dir. CIA)
I recall hearing many calls, shortly after the Snowden disclosures, for this exact same punishment to befall both James Clapper (Dir. Natl. Intel.) and Ret. Gen. Keith Alexander (frmr. Dir. NSA). with the exact same wording as above, for their shenanigans -- revealed by Snowden. Of course, the clause predates the 20th Century; but still, choose your words wisely.
A Keith Alexander quote from the same source:
“I think any unauthorized disclosures made by individuals that have dishonored the oath of office, that they have raised their hand and attested to, undermines this nation’s security,” he said in response to a question about Snowden (Nov 18, 2015).
They still can't get their own facts straight, even after J. Kerry made the same mistake a year or so ago. Snowden was a Federal CONTRACTOR, meaning that he DID NOT take any oath of office. The oath is for Federal employees, appointees, and electees only. Contractors do not take an oath.
I just want to keep the facts straight. It aids discussion.
I don't know if I could function without Tab Groups any more. I have to project-hop, between a wide array of research or development areas, all the time.
* Big literature surveys,
* Sets of companies in a sector,
* Patents in a family,
* Aspects of a collaborative project where time elapses between hearing-back from others.
I don't want to print all of that out, or to save a bunch of PDFs! I just Group the Tabs, and use Tab Groups basically like 'workspace switching'. After discovering tab groups, and dealing with their fiddly implementation (early v.), it was absolutely worth that effort. Firefox then started to:
* Launch far faster
* Remain light on the CPU & WiFi – because Tab Groups don't load until (re-)selected.
* Have order in my life, with one "Projects" window, and a separate, general browsing window.
Does anyone know how we Tab-Group users can deal with this change? At least, other than:
(a) never updating FF, or
(b) having to live with 20 open windows, each full of tabs, but each also lacking a LABEL as to its topic/name?
From your own citation:
However, in a suspension bridge with a suspended roadway, the chains or cables support the weight of the bridge, and so do not hang freely. In most cases the roadway is flat, so when the weight of the cable is negligible compared with the weight being supported, the force exerted is uniform with respect to horizontal distance, and the result is a parabola...
Correct. Ideally, it will be a parabola.
I could have saved some time by reading comments before my wordier posting, above...
A cable hanging freely from two fixed points will form a catenary –like the wires between telephone poles.
This is not the case with a suspension bridge, where additional, vertical cables are strung every 20 or 40 meters, in order to support the road deck. The resultant shape is not a catenary. Probably closer to a parabola, as the cable is supporting not only its own weight along its length, but also the decking in periodic increments.
Each suspension bridge differs slightly, depending upon the weight factors of the various components. Finite element analysis is probably the only reliable way to determine the mathematical shape of the arc. (Or just take a photo.)
Catenaries: They work for arches, too.
That is what happens when u use Windows.
Actually, this is what happens when you (I) use Adobe products.
The open-source Image-J is far more agile in processing my 100,000+ image-stacks.
I have eight (8) cores on my laptop. Frequently, a single multiprocessor-unaware application will hog an entire core, getting it hot, while asking nothing of the other seven (7). These applications are typically very expensive ones, so you might think that they would make use of them.
Oh, but no. Give me two cores, 100 cores, or anywhere in between. I, as a power-user, will actually never notice a difference.
Get the programmers to write MPA software. Only then will I think about believing the hype about multiple cores.
The way US police are trained to interrogate people is focused entirely on eliciting a confession. It results in a shockingly high false confession rate.
You are spot-on. This is indeed shockingly quite true.
We differ only in our application of the word "interrogator."
I never use the "P-word" to refer to US 'law-enforcement' officers. Thus, I do not consider them to be interrogators, because they are not, at least by the true meaning of the word.
You forgot to mention the Supreme Court decision interpreting that, "it is not illegal for cops to lie to your face, even if it is done to elicit a confession."
Just completing the chain for you.
You are concise.
Lie detector results are always backed up by empirical phrenological data. Lie detectors don't lie. /s
You lie.
You have a short brain-case.
That's not your imagination kind sir or madame, it's a fact. This "device" is less effective than someone trained to pickup "tells".
Yep. Learn to read micro-expressions. They are true tells. For example, sudden pupil dilations, flushing, or the few other tells that are autonomic.
Just don't confuse these with the witch-doctor "tells", such as: "If the subject looks to the right before replying, then he is lying." Ugh. Those generalizations are voodoo, and have nothing to do with human physiology. If your current manager believes in those things, then you should: (1) Exploit them to the max, while (2) Finding a better job.
PS — Sociopaths make for excellent liars and car salesmen; but oh, I am repeating myself.
Yes.
An intelligent person will recognize when the 'polygrapher' has moved from the baseline questions to the particular 'question(s) of interest.'
I would notice, and would be nervous simply because of that realization, regardless of the 'true' answer to the question(s). Like you, I can tell an innocuous question from a 'gotcha' type of question, and those things, in such a situation, would stress me out. Just knowing that a trained monkey is firing what he thinks is his secret bullet will peg the body-signal charts. The correlation of my answer to 'truthiness' will be irrelevant to the operator's "decision based on the quantitative (but unrelated) data taken during questioning."
A solidly trained and experienced interrogator will get all of the information that he wants out of you –and you will provide it willingly. THAT is what real interrogation is about.
OTOH, the torture thing (as is the fashion in this day) produces nothing of value, only statements that the tortured person thinks are likely make the torture stop.
I mean, yeah, torture is a War Crime and all. Sure. To each his own. And don't even bother trying to use moral arguments against torture. All you need do is simply to apply a basic "cost-benefit analysis", like any MBA might do. There is no "value proposition" of any note. Plus, the ROI, what with all of the lawsuits and war-crimes tribunals that might follow, is simply not there. Invest elsewhere.
{/sarcasm}