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8 Female Fighters of World War II

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March is Women's History Month, so it's a good time for the overdue followup to the previous post 11 Women Warriors of World War II. Here are eight more women who bravely contributed to the Allied victory in World War II.

1. Lise Børsum: Refugee Smuggler

Lise Børsum was a Norwegian housewife married to an Oslo physician. During World War II she became active in smuggling Jews out of Nazi-occupied nations into Sweden, often through her own home. She and her husband both were arrested in 1943. The doctor was soon released, but Lise Børsum was sent to the Ravensbrück concentration camp in Germany where she stayed until liberated by the Swedish Red Cross in 1945. Børsum's time in captivity politicized her, and she wrote a book about her arrest, interrogation, and imprisonment that became a best seller. She also served on the National Council Fund to help victims of the war and on a commission to detect and end concentration camps in nations the world over. Børsum kept up her writing and humanitarian work until shortly before her death in 1985. Her daughter Bente became an actress and wrote and performed a stage show about her mother in Norway.

2. Barbara Lauwers: Propaganda Warrior

Barbara Lauwers was born in Czechoslovakia, earned a law degree, and moved to the U.S. with her husband in 1941. She became an American citizen in 1943 and then immediately joined the Women's Army Corps. Lauwers was assigned to the OSS, the precursor of the CIA. In 1944, she was involved in Operation Sauerkraut, which was a propaganda assault to demoralize German soldiers. Fluent in five languages, Lauwers worked to turn German POWs into operatives, and trained them to disseminate rumors among the German Army after their release from Allied custody. Operation Sauerkraut was quite successful, and Lauwers continued to design and supervise propaganda operations in the the European theatre. She trained POWs to gather intelligence and report back to the Allies. Lauwers earned a Bronze Star for convincing six hundred Czech soldiers to turn to the Allies by her propaganda efforts.

3. Annie Fox: Pearl Harbor Nurse

Lt. Annie G. Fox was the chief nurse on duty at Hickam Air Field in Hawaii on December 7, 1941. Fox went into action as the Japanese attack sent wounded soldiers into the hospital while shells continued to fall. For her tireless efforts during and after the attack, Fox became the first woman ever to receive a Purple Heart. The citation read, in part:

“outstanding performance of duty and meritorious acts of extraordinary fidelity. . . During the attack, Lieutenant Fox, in an exemplary manner, performed her duties as head Nurse of the Station Hospital. . . in addition she administered anaesthesia to patients during the heaviest part of the bombardment, assisted in dressing the wounded, taught civilian volunteer nurses to make dressings, and worked ceaselessly with coolness and efficiency, and her fine example of calmness, courage and leadership was of great benefit to the morale of all with whom she came in contact...”

In 1944, when the requirements for the Purple Heart were changed to require battle wounds, the medal was rescinded and Fox was awarded the Bronze Star in its place. Because of Fox's precedent as the first women to receive the Purple Heart, some sources say that she was wounded at Pearl Harbor, but she was not.

4. Violette Szabo: Fearless Spy

Violette Bushell Szabo was raised in England in a British-French family. In 1940, she married French Foreign Legion officer Etienne Szabo. Two years and one daughter later, Etienne was killed in action, and Violette was determined to avenge his death. In 1943, Violette Szabo was recruited by the British Special Operations Executive (SOE) and trained as a courier. Her first mission to France was in April of 1944, during which she reorganized a resistance unit, sabotaged roads and bridges, and sent back reports by radio. Szabo was arrested twice, and talked her way out both times. Her second mission in June was just after the D-Day invasion. Szabo parachuted into France, led a local resistance unit in sabotaging German communications, and then encountered a roadblock. She was arrested and interrogated under torture, but gave up no damaging information. Szabo was transferred several times, ultimately to Ravensbrück concentration camp in Germany in August 1944. Even in captivity, Szabo managed to serve other prisoners, saved at least one spy's life, and planned an escape that was uncovered at the last minute. In January of 1945, she and two other SOE agents were executed by an SS officer. Szabo was posthumously awarded the George Cross and an MBE from Britain, and the Croix de Guerre and Médaille de la Résistance from France. Szabo's exploits are recorded in several biographies and at least one film, Carve Her Name With Pride.

5. Hannie Schaft: Dutch Resistance Fighter

Hannie Schaft was a Dutch resistance fighter. Born Jannetje Johanna Schaft in 1920, she had to drop out of her university studies because she refused to sign an oath of loyalty to the Nazis. She joined a resistance organization called the Raad van Verzet, which leaned toward a communist philosophy. Schaft spied on German soldiers, aided refugees, and committed sabotage. She became known as "the girl with the red hair," although she later colored it after her identity was disclosed. In March of 1945, Schaft was arrested at a German checkpoint. They didn't know they had arrested the infamous girl with the red hair until later when her roots began to grow out. That identification led to her execution on April 17. The story goes that the first soldier who shot merely wounded her in the head, and Schaft cried that she could shoot better than that. Then a shot from a second soldier silenced her forever. After the war, Schaft was reburied with honors in a funeral attended by Queen Wilhelmina and the royal family of the Netherlands.

6. Felice Schragenheim: Underground Operative

Felice Schragenheim spent years trying to leave Germany as the Nazis took power, but every effort to emigrate was blocked for one reason or another. Schragenheim then worked for a Nazi newspaper where she collected intelligence for the underground. She also went on operations to smuggle Jews out of Germany, but details of her underground activities are few and far between. What we know of Schragenheim is the evidence that Lilly Wust kept secret for decades after the war. Wust was the wife of a German officer and a mother of four; both she and her husband were members of the Nazi party. Wust and Schragenheim fell in love in 1942, but Wust did not learn that Schragenheim was Jewish until after their affair commenced. Schragenheim was hiding in plain sight -only her Jewish status was a secret. Schragenheim lived with the Wust family for a time, but on August 21, 1943, was arrested and sent to a concentration camp.

Schragenheim and Wust still managed to send letters to each other. Wust went to Theresienstadt concentration camp in September of 1944 and asked to see Schragenheim. She was refused, and the visit may have accelerated the process that led to Schragenheim's death. She reportedly died on New Year's Eve 1944, possibly from tuberculosis. Wust, heartbroken, left her husband and worked to protect Jews for the remainder of the war. She kept all of Schragenheim's correspondence, in secret until 1995, when they became the subject of a book and then a film, Aimee & Jaguar, in 1999. The love story is told from the view of the survivor, of course. Wust was not privy to Schragenheim's Jewish resistance activities, so most of those details died with her.

7. Queen Wilhelmina: Dutch Inspiration

When the Nazis invaded the Netherlands, Queen Wilhelmina was evacuated to Britain against her wishes when the planned government refuge of Zeeland was overrun by Germans. From Britain, she presided over the government in exile and broadcast information and encouragement to the Dutch resistance over Radio Oranje. Winston Churchill called the queen "the only real man among the governments-in-exile in London."

8. Zoya Kosmodemyanskaya: Soviet Martyr

Zoya Kosmodemyanskaya was barely 18 years old when she was executed for her guerilla activities in World War II. She was posthumously awarded the title of Hero of the Soviet Union, the first woman to be named so in World War II. In October of 1941, she had volunteered for a class of guerrilla fighters known as the Red Army Western Front sabotage and reconnaissance force. Her unit was sent behind enemy lines, near Moscow at the time, to set land mines and to cut off German supply lines. Ordered to burn the village of Petrischevo, Kosmodemyanskaya set fire to a stable and a couple other buildings and was caught by locals. Some accounts say she was betrayed by one of her compatriots, Vasily Klubkov, after he was captured and interrogated. German forces tortured Kosmodemyanskaya by stripping and whipping her and marched her around naked in the cold. Still, she gave no information on her unit. The next day, she was hanged in a public ceremony, a sign on her chest reading "arsonist." Her body was left hanging, displayed for a month before burial. A Pravda article about Kosmodemyanskaya published in 1942 says she died still pledging her loyalty to the Soviet Union. Be warned that if you search for photographs of Kosmodemyanskaya, there are graphic pictures of her dead body.

See also: 11 Women Warriors of World War II

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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8 Common Dog Behaviors, Decoded
May 25, 2017
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Dogs are a lot more complicated than we give them credit for. As a result, sometimes things get lost in translation. We’ve yet to invent a dog-to-English translator, but there are certain behaviors you can learn to read in order to better understand what your dog is trying to tell you. The more tuned-in you are to your dog’s emotions, the better you’ll be able to respond—whether that means giving her some space or welcoming a wet, slobbery kiss. 

1. What you’ll see: Your dog is standing with his legs and body relaxed and tail low. His ears are up, but not pointed forward. His mouth is slightly open, he’s panting lightly, and his tongue is loose. His eyes? Soft or maybe slightly squinty from getting his smile on.

What it means: “Hey there, friend!” Your pup is in a calm, relaxed state. He’s open to mingling, which means you can feel comfortable letting friends say hi.

2. What you’ll see: Your dog is standing with her body leaning forward. Her ears are erect and angled forward—or have at least perked up if they’re floppy—and her mouth is closed. Her tail might be sticking out horizontally or sticking straight up and wagging slightly.

What it means: “Hark! Who goes there?!” Something caught your pup’s attention and now she’s on high alert, trying to discern whether or not the person, animal, or situation is a threat. She’ll likely stay on guard until she feels safe or becomes distracted.

3. What you’ll see: Your dog is standing, leaning slightly forward. His body and legs are tense, and his hackles—those hairs along his back and neck—are raised. His tail is stiff and twitching, not swooping playfully. His mouth is open, teeth are exposed, and he may be snarling, snapping, or barking excessively.

What it means: “Don’t mess with me!” This dog is asserting his social dominance and letting others know that he might attack if they don’t defer accordingly. A dog in this stance could be either offensively aggressive or defensively aggressive. If you encounter a dog in this state, play it safe and back away slowly without making eye contact.

4. What you’ll see: As another dog approaches, your dog lies down on his back with his tail tucked in between his legs. His paws are tucked in too, his ears are flat, and he isn’t making direct eye contact with the other dog standing over him.

What it means: “I come in peace!” Your pooch is displaying signs of submission to a more dominant dog, conveying total surrender to avoid physical confrontation. Other, less obvious, signs of submission include ears that are flattened back against the head, an avoidance of eye contact, a tongue flick, and bared teeth. Yup—a dog might bare his teeth while still being submissive, but they’ll likely be clenched together, the lips opened horizontally rather than curled up to show the front canines. A submissive dog will also slink backward or inward rather than forward, which would indicate more aggressive behavior.

5. What you’ll see: Your dog is crouching with her back hunched, tail tucked, and the corner of her mouth pulled back with lips slightly curled. Her shoulders, or hackles, are raised and her ears are flattened. She’s avoiding eye contact.

What it means: “I’m scared, but will fight you if I have to.” This dog’s fight or flight instincts have been activated. It’s best to keep your distance from a dog in this emotional state because she could attack if she feels cornered.

6. What you’ll see: You’re staring at your dog, holding eye contact. Your dog looks away from you, tentatively looks back, then looks away again. After some time, he licks his chops and yawns.

What it means: “I don’t know what’s going on and it’s weirding me out.” Your dog doesn’t know what to make of the situation, but rather than nipping or barking, he’ll stick to behaviors he knows are OK, like yawning, licking his chops, or shaking as if he’s wet. You’ll want to intervene by removing whatever it is causing him discomfort—such as an overly grabby child—and giving him some space to relax.

7. What you’ll see: Your dog has her front paws bent and lowered onto the ground with her rear in the air. Her body is relaxed, loose, and wiggly, and her tail is up and wagging from side to side. She might also let out a high-pitched or impatient bark.

What it means: “What’s the hold up? Let’s play!” This classic stance, known to dog trainers and behaviorists as “the play bow,” is a sign she’s ready to let the good times roll. Get ready for a round of fetch or tug of war, or for a good long outing at the dog park.

8. What you’ll see: You’ve just gotten home from work and your dog rushes over. He can’t stop wiggling his backside, and he may even lower himself into a giant stretch, like he’s doing yoga.

What it means: “OhmygoshImsohappytoseeyou I love you so much you’re my best friend foreverandeverandever!!!!” This one’s easy: Your pup is overjoyed his BFF is back. That big stretch is something dogs don’t pull out for just anyone; they save that for the people they truly love. Show him you feel the same way with a good belly rub and a handful of his favorite treats.

The best way to say “I love you” in dog? A monthly subscription to BarkBox. Your favorite pup will get a package filled with treats, toys, and other good stuff (and in return, you’ll probably get lots of sloppy kisses). Visit BarkBox to learn more.

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