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Title: PhotoMath
Platform: iOS and Android
Cost: Free

From WordLens (now part of Google Translate) to Invisibility 3D, apps which use the camera as an input tool to harness machine intelligence always interest me. When one such app, PhotoMath hit the top of the download charts last year, there was some minor outcry among educators. Would students use the app to cheat? But while the PhotoMath app reads and solves mathematical problems by using the camera of your phone and tablet in real time, it is far from the scourge of math teachers. Like Wolfram Alpha, it is a nice tool to have on hand when you can't remember enough math to help students with their work.

Within the app with an active camera, you can manipulate the size of the datawell to pick up the whole of more complicated questions, and the app solves advanced math problems including quadratic equations and inequalities. The app goes beyond solutions, anticipating the admonition to "show your work." A red button opens the step-by-step process for doing just that.

You can flag incorrect answers, and updates build upon the errata to produce a more robust tool.

The app has its limitations. It can only scan printed text, so it won't work on a teacher's handwritten equations. And, given the push towards more constructivist assignments and the intuitive mathematical understanding embodied by the Common Core, I don't see it as a tool for cheating beyond the solutions which math textbooks have been including for decades. Y

Have a suggestion for a featured App of the Week? Let us know. And don't forget to check out more great apps in our archive.

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बेशक कैमरा लगाने का मकसद है लोगों में इस बात का मनोवैज्ञानिक डर पैदा करना कि अगर उन्होंने गड़बड़ की तो उनकी पहचान आसानी से हो जाएगी.  जैसाकि अगर कोई व्यक्ति चलती ट्रेन में तोड़ फोड़ करता है तो कैमरे पर यह सब रिकॉर्ड हो जाता है. बाद में वीडियो से उसकी पहचान कर पुलिस अहम जानकारी निकाल सकती है.

पर यह भी सही है फोटो खिचवाते समय हम स्माईल जरुर देते हैं और अगर हर समय कैमरे की निगरानी मे रहेंगें तो स्माईल तो बनती है ना इसलिए आप भी इस समय सीसीटीवी की निगरानी में हैं तो Smile please…

The post Cartoon – CCTV appeared first on Monica Gupta.

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Amidst the images of burning vehicles and riots in Ferguson, Missouri, the US President, Barack Obama, has responded to growing concerns about policing by pledging to spend $75 million to equip his nation’s police with 50,000 Body Worn Videos. His initiative will give added impetus to an international movement to make street policing more transparent and accountable. But is this just another example of a political and technical quick fix or a sign of a different relationship between the police and science?

At the heart of the shift to Body Worn Video is a remarkable story of a Police Chief who undertook an experiment as part of his Cambridge University Masters programme. Rialto Police Department, California serves a city of 100,000 and has just over one hundred sworn officers. Like many other departments, it had faced allegations that its officers used excessive force. Its Chief, Tony Farrar, decided to test whether issuing his officers with Body Worn Video would reduce use of force and complaints against his officers. Instead of the normal police approach to issuing equipment like this, Farrar, working with his Cambridge academic supervisor, Dr Barak Ariel, designed a randomised field trial, dividing his staff’s tours of duty into control – no video – and treatment – with video. The results showed a significant reduction in both use of force and citizen complaints.

Why is this story so different? A former Victoria Police Commissioner described the relationship between the police and research as a “dialogue of the deaf”. The Police did not value research and researchers frequently did not value policing. Police Chiefs often saw research as yet another form of criticism of the organisation. Yet, despite this, research has had a major effect on modern policing. There are very few police departments in the developed world that don’t claim to target “hot-spots” of crime, an approach developed by a series of randomised trials.

However, even with the relative success of “hot-spot policing”, police have not owned the science of their own profession. This is why Chief Farrar’s story is so important. Not only was Farrar the sponsor of the research, but he was also part of the research team. His approach has allowed his department to learn by testing. Moreover, because the Rialto trial has been published to both the professional and academic field, its lessons have spread and it is now being replicated not just in the United States but also in the United Kingdom. The UK College of Policing has completed randomised trials of Body Worn Video in Essex Police to test whether the equipment is effective at gathering evidence in domestic violence investigations. The National Institute of Justice in the United States is funding trials in several US cities.

This is the type of approach we have come to expect in medicine to test promising medical treatments. We have not, up to now, seen such a focus on science in policing. Yet there are signs of real transformation, which are being driven by an urgent need to respond to a perfect storm created by a crisis of legitimacy and acute financial pressures. Not only are Chiefs trying to deal with the “Ferguson” factor, but they also have to do so against a backdrop of severe constraint.

As the case of Body Worn Video has shown, science can provide a means to transform policing as long as police are prepared to own and adopt the science. But for Body Worn Video not to be an isolated case, policing will need to adopt many of the lessons from medicine about how it was transformed from eighteenth century barber surgeons to a modern science-based profession. This means policing needs an education and training system that does not just teach new recruits law and procedure, but also the most effective ways to apply them and why they work. It means that police leaders will need to target their resources using the best available science, test new practices, and track their impact. It will require emerging professional bodies like the College of Policing to work towards a new profession in policing, in which practice is accredited and expertise is valued and rewarded.

Obama’s commitment to Body Worn Video will not, of itself, solve the problems that Ferguson has so dramatically illustrated. The Rialto study suggests it may help – a bit. However, the White House announcement also included money for police education. If that is used wisely and police leaders grasp the opportunity to invest in a new science-based profession, then the future may be brighter.

Headline image credit: ‘Day 126 – West Midlands Police – CCTV Operator’ by West Midlands Police. CC BY-SA 2.0 via Flickr

The post Transforming the police through science appeared first on OUPblog.

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Name: Leafsnap
Platform: iOS
Cost: Free

Leafsnap has languished for years on my phone. The app represents the sort of big audacious online project that we as librarians need to know about. Merging geographic location with image recognition, it combines reports from the field to produce an interactive electronic guide.

For the end user, Leafsnap is designed to make a “best guess” about the species of a plant, based on an image of a leaf you upload or input through the camera. I hadn’t been able to use it before last week. It’s limitation? Spearheaded by the Columbia University, the University of Maryland, and the Smithsonian Institution, Leafsnap is crowd-sourced, and a caveat warns that the database best reflects the northeasten U.S. for the time being (though there is a U.K. version, too). When I heard someone speculating about the name of a specific tree while I was in Massachusetts, I was happy to put the tool to work.

One word on technique: I had better success when I photographed and cropped around a leaf beforehand, and you will need a “true white” background — the reverse side of an index card works fine. The app converts your image into an “x ray” of the leaf, queries the database and returns with a series of options, all of which contain Leafsnaps as well as more holistic images of matching plants.

Using the apps involves creating an account in Leafsnap’s user-driven botanical database to track your scanning and positive identifications. Inside the app, you’re creating your own log book, marking each species with a swipe, with a geographic distribution as well.

The process of collecting and marking specimens can be addictive; even your most tender-hearted teen will respect the do-no-harm approach to nature the app represents. Within the database, the specimens link to the Encyclopedia of Life, another ambitious, crowd-sourced online project, and there’s an integrated program designed to improve your recognition skills.

It only occurred to me after the fact that leafsnap enables a twenty-first century manifestation of the very nineteenth century impulse for classification among amateur botanists. For contrast, you can see a digitized version of Emily Dickinson’s old school herbarium here.

Leafsnap offers a fun, mobile way to involve the natural world in your summer STEM programming. And while the geographic scope of the database might seem to limit its utility, I’ve found that it works just fine beyond the specified region.

Have a suggestion for App of the Week? Let us know. And find more great Apps in the YALSA Blog’s App of the Week Archive.

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Santa doesn’t have an iPhone yet, so he’s taking photos old-school.

For more holiday tom-foolery and frivolity, check out what my fellow HoHoDooDa Doodlers are doing here.

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I have a new camera! I'm quite excited about it, but please note I haven't read the manual yet. Due to a modest budget, I bought it on craigslist, but to me it's pretty fancy. It's a Canon Rebel XT and I'm so happy to finally have a DSLR after using my little point and shoot for so long. (I used to love my old SLR but couldn't cope with film anymore.)

So to celebrate, there's lots of new things in the shop today, including the little coin pouch pictured above. It started with a fabulous super-wide vintage tie that I had to buy despite the fact that buying a tie for the fabric doesn't make too much sense. It had a hole in it, so I had no compunction about pulling it apart, washing it and cutting out pieces for my pouches. It turns out you can get a surprising amount of fabric from a nice wide vintage tie. I have more of these pouches in a variety of sizes so if you have a request let me know and I'll add it to the shop.

Oddly, the final motivation to get the new camera was those blue quilted pouches (mentioned in my last post) whose colour just wasn't coming out right in the photos. And in the end the blue wasn't quite right with the new camera either. I guess it's just a hard-to-capture blue. Is there such a thing? I'm not sure but I'll be doing my best and getting those into the shop shortly as well.

And sometimes it doesn't matter what the motivation is if it works out in the end. I'm very happy with my new camera. Good-bye autofocus!

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This kind of thing doesn't usually happen to me, but the other day Bradley brought home a branch he found on the sidewalk. It was Valentine's day and he was bringing me some flowers, but noticed the branch and thought I might like it too.

We thought it was a pussywillow branch. I didn't know what would happen but I put it in a vase with some water and clipped the bottoms of the branches. Then I gave up and took the branches out a few days later to wash the vase, but then Bradley noticed one of the buds seem to be opening a bit so I put them back in the water.
The buds kept getting fatter and the furry shells popped off. And inside there was some pink! Then today, the biggest one opened up all the way and revealed itself to be a magnolia flower! I love magnolia trees so much. Someday I would like to have one. But in the meantime I can't believe how pretty this branch is now. It doesn't quite seem real.

I took lots of pictures because it's so lovely, so here's a side view:
In other flower news, the orchid has bloomed at last!
There are two flowers so far. I didn't take a great picture but this one will give you the general idea.

Speaking of not-great pictures, my photos keep having shadows in the corners. Is my camera dying or am I doing something wrong?? If anyone knows I'd love to hear from you. I can fix a bit of vignetting easily in Photoshop, and sometimes I like the effect, but maybe something's not right here.

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I know I've been neglecting my blog when I find cobwebs on my camera tripod. Sorry to have been away so long! I had a tight illustration deadline that was keeping me busy and after a couple of weeks I tend to get out of the habit. As usual I can't show you the artwork until the project is published so I'll try to remember to show you later on.

Incidentally I've started getting a lot of "advertising" comments on my blog which means a comment that's really just a link to a business. Some of the businesses are.. um.. not family friendly.. and it can take ages to delete tons of these automated comments so I've had to add moderation to any comments on posts older than 2 weeks. This means that sometimes I don't see comments right away because the moderated comments only show up when I log in to write a new post. So sorry for delays answering any questions. I usually just reply on the same post where you left the comment/question so you can look for that, but you can also just email me directly, my email is there on the sidebar. Or include your email with the comment. As always comments are appreciated - it reminds me that people do actually read my blog!

So anyway, I was at a wedding with a friend recently who noticed my small handmade camera bag. I had made it years ago and it seems a little wonky to me, but she liked it and wanted me to make one for her. She has a typical bulky black leather/vinyl? bag and wanted a smaller one. It was good timing as lately she's been giving me lots of nice old sewing things, vintage transfer patterns, and bags of bias tape, trim, zippers and buttons, so it was a perfect chance to say thank you!

I love when people find old sewing things and ask me if I'd like them. "Are you sure you want this?" "If you don't want this stuff you can just give it to Goodwill.." I love that. They always seem surprised at how thrilled I am.
When I designed the camera bag for my friend I decide it was time to update my own and these are the results. It's a really nice thick soft wool that helps cushion the camera a bit. The colour didn't come out right in the photos and I can't seem to fix it. It's a bit more rich and warm.. Anyway I'm loving this teal blue lately. The floral print was actually a scrap from Jen Anisef leftover at one of the Workroom Trunk shows (thank you Jen!).
The inside is green seersucker. I like seersucker, there's something about it that makes me nostalgic, something comforting about the texture.

Then the outside is embellished with a bit of antique lace from the Sunday Market. I collect these things incessantly so I'm always happy when the right project comes along to use them. I just can't turn down a mason jar full of buttons or a bundle of vintage bias tape or lace.