Penelitian

Penelitian - A team of researchers at Northwestern University has found that people serving as mock jurors tend to view police officer intent differently when viewing events captured using body cams versus dash cams.

In their paper published in Proceedings of the National Academy of Sciences, the group describes their study, in which they used volunteers as stand-ins for jurors watching either real or staged police action video events.


The use of body cams by police officers has become routine in the U.S.—their use is based on the idea that video footage of encounters between police and the public will make police officers more accountable for their actions.

Many jurisdictions have passed laws requiring their use after multiple instances in which questions were raised about the intent of the officers involved and their subsequent actions, particularly in cases when the victim was unarmed.

In this new effort, the researchers have sought to determine if the existence of body cam video d…

Penelitian - The Nazi murder rate during the height of the Holocaust was almost three times higher than previously thought, and only declined because there was "no one left to kill", a disturbing new study has found.

At the regime’s murderous peak, around 15,000 Jews were slaughtered every day in the death camps of German-occupied Poland under Operation Reinhard, new research shows.


Previous estimates suggested that the maximum Holocaust death rate was around 6,000 victims each day at Auschwitz, but evidence of exact figures has proved difficult to find because the killings were covered up by the Nazis.

To determine the true picture, Professor Lewi Stone, of the University of Tel Aviv in Israel, studied records of the ‘special trains’ used to transport millions of Jews to the three camps of Belzec, Sobibor and Treblinka in Poland.

After plotting the numbers on graphs over time he found a "three month phase of hyperintense killing" highlighting "the Nazis pure …

Penelitian - A team led by the University of California San Diego has developed a neuroinspired hardware-software co-design approach that could make neural network training more energy-efficient and faster.

Their work could one day make it possible to train neural networks on low-power devices such as smartphones, laptops and embedded devices. The advance is described in a paper published recently in Nature Communications.


Training neural networks to perform tasks like recognize objects, navigate self-driving cars or play games eats up a lot of computing power and time. Large computers with hundreds to thousands of processors are typically required to learn these tasks, and training times can take anywhere from weeks to months.

That's because doing these computations involves transferring data back and forth between two separate units--the memory and the processor--and this consumes most of the energy and time during neural network training, said senior author Duygu Kuzum, a profe…

Penelitian - Wearable electronic devices are susceptible to degradation or fatigue fracture, but now the aged electrodes of the devices can be healed by simple water vapor treatment.

A group of international researchers led by Lifeng Cui from Dongguan University of Technology, China designs repairable microfiber-based network electrodes with high conductivity, high transparency and ultra-flexibility.


The electrodes consist of polycaprolactone microfibers as healing agents and a thin conducting layer coating such as gold. The electrodes can recover the conductivity and mechanical strength after tensile failure or even cutting, which can be attributed to the adhesion and capillary force at the interface of gold and polymer.

Upon embedding in PDMS elastomer, the electrodes show excellent durability of up to 1000 cycles and can be used in wearable pressure and strain sensing devices.



Journal : Yuting Wang et al. Reversible conductivity recovery of highly sensitive flexible devices by water…