Sunday, August 27, 2006
As you can now see, audio and video evidence is not only obtained from surveillance or recovery (e.g. from the scene of the crime, nearby ATM cameras, etc.). As a matter of fact, in recent years recording of police interviews has become increasingly common throughout the world, so this source of audio and video evidence will also become more common in trials.
About 37% of Britons aged 61 to 70 and 60% of those aged 71 to 80 - 6.5m people - have age-related hearing loss.
The Human Mutation study of over 1,200 people found subtle changes in a gene called KCNQ4 were more common in those with age-related hearing problems.
Based on this study, common age related hearing loss appears likely to be due to a combination of environmental (e.g. exposure to loud sounds) and genetic factors. The gene KCNQ4 has previously been linked to a hereditary form of hearing loss that strikes young people, regardless of exposure to loud sounds. This doesn't mean that exposure to loud sounds won't cause hearing loss - it will. Instead, the way I interpret the study, it is more likely that if KCNQ4 is seriously defective then hearing loss strikes early; if it is a defective to a "lesser" extent, then one is more succeptible to age related hearing loss; and, finally, if it is normal, one can still lose hearing due to loud sounds (and maybe through other mechanisms, such as age related degradation of tissues and such in the ear).
Note: The above is my own interpretation and is meant to estimate a trend, based on experience and scientific reasoning, and may not be fully supported by existing data.
Saturday, August 26, 2006
(Hat tip: Flight Global) (note: I stumbled across the Flight Global page from a news article but now can't find the original site that got me on the trail).
Wednesday, August 16, 2006
The study was published in the August issue of Psychological Science.
(Hat tip: ScienceDaily)
Tuesday, August 15, 2006
(Hat tip: Chronicles of Max)
Bill made important contributions to law enforcement and security over the years, both in government service (FBI) and in industry (Tektron). He was respected, admired, and appreciated by many for his accomplishments as well as his character.
Steven C. Marshall (a.k.a. Stephen St. Croix) - Forbes obituary. (Updated: Mix magazine obituary)
Few people leave a mark in a single industry - Stephen left marks in three different industries - in the movies (Star Wars, Wizard of Oz, and Gone with the Wind), in music (Songs in the Key of Life), and in law enforcement (Intelligent Devices).
Both of them were called from us early and will be missed.
(Hat tip: CNET.CO.UK)
"Generally, the State's Attorney's Office has not found them to be a useful tool to prosecutors," office spokeswoman Margaret Burns said. "They're good for circumstantial evidence, but it definitely isn't evidence we find useful to convict somebody of a crime."That quote was followed by this one:
"We have not used any footage to resolve a violent-crime case," she said.
Miss Burns said police sometimes misidentify suspects because the cameras produce "grainy" and "blurry" images.
"We have had that happen more than once," she said.
"Why?", you might ask. The things that come immediately to mind are 1) too far away, 2) poor lighting, 3) poor lens/camera, and 4) too much compression. I'd be willing to wager money on it being the latter, at least in large part. I say that based on experience and also on noting what wasn't said - no complaints about live monitoring - as well as an inference I made based on the fact that a security camera helped solve one case even though no image was recorded (which to me says that an operator likely saw something important using the camera).
The entire article is interesting and gives some insight into real-life issues with deploying and operating these systems. Many of these issues are addressable and data like this can help point the way to workable solutions.
The main findings of the study were that 1) roughly 13 percent of children at age two were late talkers; 2) that factors involving mothers' education, income, and such had no significant influence; and 3) that most late talkers had normal language development by age seven.
To read more, see Telethon Institute for Child Health Research.