Inspired by Bitcoin, many different kinds of cryptocurrencies based on blockchain technology have turned up on the market. Due to the special structure of the blockchain, it has been deemed impossible to directly trade between traditional currencies and cryptocurrencies or between different types of cryptocurrencies. Generally, trading between different currencies is conducted through a centralized third-party platform. However, it has the problem of a single point of failure, which is vulnerable to attacks and thus affects the security of the transactions. In this paper, we propose a distributed cryptocurrency trading scheme to solve the problem of centralized exchanges, which can achieve trading between different types of cryptocurrencies. Our scheme is implemented with smart contracts on the Ethereum blockchain and deployed on the Ethereum test network. We not only implement transactions between individual users, but also allow transactions between multiple users. The experimental result proves that the cost of our scheme is acceptable.

We analyze the computational complexity of motion planning through local "input/output" gadgets with separate entrances and exits, and a subset of allowed traversals from entrances to exits, each of which changes the state of the gadget and thereby the allowed traversals. We study such gadgets in the 0-, 1-, and 2-player settings, in particular extending past motion-planning-through-gadgets work to 0-player games for the first time, by considering "branchless" connections between gadgets that route every gadget's exit to a unique gadget's entrance. Our complexity results include containment in L, NL, P, NP, and PSPACE; as well as hardness for NL, P, NP, and PSPACE. We apply these results to show PSPACE-completeness for certain mechanics in Factorio, [the Sequence], and a restricted version of Trainyard, improving prior results. This work strengthens prior results on switching graphs and reachability switching games.

Unsupervised machine translation (MT) has recently achieved impressive results with monolingual corpora only. However, it is still challenging to associate source-target sentences in the latent space. As people speak different languages biologically share similar visual systems, the potential of achieving better alignment through visual content is promising yet under-explored in unsupervised multimodal MT (MMT). In this paper, we investigate how to utilize visual content for disambiguation and promoting latent space alignment in unsupervised MMT. Our model employs multimodal back-translation and features pseudo visual pivoting in which we learn a shared multilingual visual-semantic embedding space and incorporate visually-pivoted captioning as additional weak supervision. The experimental results on the widely used Multi30K dataset show that the proposed model significantly improves over the state-of-the-art methods and generalizes well when the images are not available at the testing time.

Narrowband internet-of-things (NB-IoT) is a competitive 5G technology for massive machine-type communication scenarios, but meanwhile introduces narrowband interference (NBI) to existing broadband transmission such as the long term evolution (LTE) systems in enhanced mobile broadband (eMBB) scenarios. In order to facilitate the harmonic and fair coexistence in wireless heterogeneous networks, it is important to eliminate NB-IoT interference to LTE systems. In this paper, a novel sparse machine learning based framework and a sparse combinatorial optimization problem is formulated for accurate NBI recovery, which can be efficiently solved using the proposed iterative sparse learning algorithm called sparse cross-entropy minimization (SCEM). To further improve the recovery accuracy and convergence rate, regularization is introduced to the loss function in the enhanced algorithm called regularized SCEM. Moreover, exploiting the spatial correlation of NBI, the framework is extended to multiple-input multiple-output systems. Simulation results demonstrate that the proposed methods are effective in eliminating NB-IoT interference to LTE systems, and significantly outperform the state-of-the-art methods.

Despite the improvements in helmet technology, helmets may prevent skull fractures, but they do not prevent concussions.

Competition is steep in games like football. The desire to win often trumps safety.

The decisions coaches make on the sidelines about returning a concussed player to the game or not can be a "game changer" for that athlete's life.

Research is showing that the accumulation of sub-concussive hits in sports like football can be just as damaging as one or two major concussions.

For many competitive high school football players like Garrett Harper, the intensity of this contact sport has its price.

The issues of sports-related concussions and chronic traumatic encephalopathy were intensified when the brain of a deceased 21-year-old football player was examined.

For a long time after her injury, soccer great Briana Scurry "hid her hell." Now, she knows that that was not the right thing to do and she wants to teach others to become more open and understanding about concussion.

"The penalty kicks, the final goals in the Olympics, playing in front of the president, in front of 90,000 people ... that is what I was born to do ... and my brain is what I used to get myself there."

One out of two girls will sustain a concussion playing soccer, but most will recover and return to play with ease. Nevertheless, awareness and education are key to keeping players safe.

"The Briana Scurry who could tune out 90,000 people during the World Cup and focus on a single ball and know I could keep it out of the goal ... that is who I want to be again."

Retired soccer star Briana Scurry talks about how all her successes started with her mind and her ability to overcome obstacles. After her injury, she felt lost, broken.

Why do some parents and coaches think it's okay to let 9-year-old kids get hit in the head over and over in football practices and games?

Despite multiple concussions, a high school freshman continues to play football. Will family tradition outweigh the risks?

By The Office of Energy Efficiency & Renewable Energy Within 25 years, the United States could produce enough biomass to support a bioeconomy, including renewable aquatic and terrestrial biomass resources that could be used for energy and to develop products … Continue reading →

Introduction

Ngx-Bootstrap has released a package of open-source tools which are native Angular directives for Bootstrap 3 and 4. It contains all core components powered by Angular. In this article, we will learn about the Typehead component which is a cool feature of Ngx-bootstrap.

What Is Typeahead?

Typeahead — Also known as autocomplete or autosuggest is a language prediction tool that many search interfaces use to provide suggestions for users as they type in a textbox. This is a method for searching and filtering through text. It is also sometimes known as autocomplete, incremental search, search-as-you-type, and inline search.

The Cannabis Issue During normal times, I-90 Green House is like a destination resort for marijuana lovers.…

Summer Camps 2020 All Northwest Football Passing Academy An offensive skill development for quarterbacks, wide receivers, tight ends and running backs.…

Summer Camps 2020 Dragon Racket Sports Camp Through fun games and contests, learn the fundamentals and develop skills and an understanding of racket sports.…

At these gatherings in northeast Washington, the jackboot of tyranny is always said to be descending, the hand of the federal government always inches away from stealing your guns, your land, your freedom to speak or to pray.…

The CDC designed a flawed test for COVID-19, then took weeks to figure out a fix so state and local labs could use it. New York still doesn’t trust the test’s accuracy By Caroline Chen, Marshall Allen, Lexi Churchill and Isaac Arnsdorf Propublica…

Coronavirus Family Tree The University of Washington Virology lab, which is testing samples for coronavirus, tweeted last night.…

Low on essential supplies and fearing they’ll get sick, doctors and nurses told ProPublica in-person care for coronavirus patients has been scaled back. In some cases, it’s causing serious harm. By Joshua Kaplan, Lizzie Presser and Maya Miller, ProPublica Every morning, between 7 and 8, at Long Island Jewish Medical Center in Queens, several coronavirus patients are pronounced dead.…

Sam Mendes' 1917, which took Best Picture and Best Director awards at the Golden Globes earlier this week, looks like a standard period piece.…

Put pictures of 1975-era Aerosmith and 1995-era Guided By Voices next to each other and you probably wouldn’t think the bands have anything in common.…

And summer takes another hit. Strolling Spokane's Coeur d'Alene Park in Browne's Addition for the Northwest Museum of Art & Culture's annual ArtFest is one of the pleasures of early summer, typically.…

Gonzaga Athletic Director Mike Roth took to the Zoom online meeting app Wednesday for a lengthy chat with members of the school community, fans and media to answer questions about college sports in the era of COVID-19. Like so many things regarding the coronavirus, there are a lot of hopes for a rapid return to normalcy — all of them couched in the reality that none of us really know how the pandemic is going to affect our lives three months from now, or six months down the line.…

Another First Friday is here, and you can correctly assume that it will be all online once again. The May 1 Virtual First Friday is from 10 am to midnight.…

You’re out of a job. You’ve been stuck inside for weeks.…

ON INLANDER.COM WORLD: Roughly two weeks after Canada's deadliest mass shooting, Prime Minister Justin Trudeau introduced an immediate ban on what he called “military-style assault weapons.”…

ON INLANDER.COM NATION: Even as U.S. President Donald Trump urges states to reopen their economies, his own administration projects that the death toll from COVID-19 will spike to 3,000 people per day.…

ON INLANDER.COM NATION: As meatpacking plants nationwide shutdown due to COVID-19 outbreaks, certain meat products are becoming harder to find at grocery stores and fast-food drive-thrus.…

The latest issue of the Inlander is hitting newsstands today. Find it at your local grocery store and hundreds of other locations; use this map to find a pickup point near you.…

Drink Local In tumultuous times, one thing remains true: People still want their spirits.…

[IMAGE-1] The legal cannabis industry has only been around for a handful of years, but one local farm's green thumb goes back generations. Since the 1950s the Lima family has been in the business of growing — their namesake Lima Greenhouses dominate Vinegar Flats, where they still grow bedding plants and vegetables.…

In times of trouble, escaping into the art that calms you is key to keeping your sanity.…

ON INLANDER.COM COVER: While Washington state forges alliances, Idaho battles coronavirus its own way.…

ON INLANDER.COM NATION: For workers, there's no sign of what "normal is going to look like" in the pandemic economy.…

Designology Interiors' Deanna Goguen has three bathrooms in her South Hill-area home, each with its own personality.…

[IMAGE-1] The days of Post Falls being merely an exit you point out to your restless kids to assure them you're almost to Coeur d'Alene are over. In the next 20 years, the little town is projected to explode to 100,000 people.…

[IMAGE-1] Visiting Spokane Valley is a little like when a child visits their grandparents' place: At first you don't understand why you're there, but after you leave with new toys, clothes and a full stomach, you can't wait to go back. And the Spokane Valley Mall has all of that.…

[IMAGE-1] It's not surprising the most popular destinations for Inlander readers in North Spokane involve shopping — NorthTown Mall and the Garland District were the top vote-getters in this year's poll — but looking at the overall results, one quickly realizes the region north of the river has a lot going on. Riverside State Park and the Little Spokane River were popular picks, too, along with Mt. Spokane Ski & Snowboard Park; clearly people love to get outside up north in between their trips to Bon Bon or Buffalo Wild Wings.…

[IMAGE-1] Midtown Coeur d'Alene. The pedestrian-friendly strip of restaurants and shops that runs north-south along Fourth Street in between Garden and Harrison avenues.…

[IMAGE-1] The people were unequivocal: The South Perry District and Manito Park are the most popular reasons to visit the South Hill, and for good reason. Manito Park is sprawling and beautiful, with 78 acres of native and cultivated landscape and 20 acres of botanical gardens.…

By Michael D. Shear and Sarah Mervosh WASHINGTON — President Donald Trump on Friday openly encouraged right-wing protests of social distancing restrictions in states with stay-at-home orders, a day after announcing guidelines for how the nation’s governors should carry out an orderly reopening of their communities on their own timetables.…

New TV ads that started airing on morning shows throughout the Spokane region are aimed at grocery shoppers, but they're not hawking deals on cabbage or Cap'n Crunch.…

The new documentary Circus of Books is predicated on an intriguing and admittedly amusing bit of cognitive dissonance: One of Los Angeles' premier adult emporiums was, for decades, operated by a buttoned-up, middle-aged Jewish couple, who kept the true nature of their jobs hidden from even their closest acquaintances.…