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Arkansas


Data Analyst

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About Apptegy Since our start in 2015, we've gone from a group of individuals to a community pushing toward the same goal of building a fantastic company with great people, great products, and most importantly, a great culture. To date, we have grown from a handful of school districts in Arkansas to thousands of school districts across the U.S. Apptegy is building products to empower school leaders to run better schools. We have the opportunity to help schools as they go through a radical shift in how they operate and to provide great technology to make that transition. Our Engineering team has grown significantly and so too has the number of schools and users. We look forward to meeting with you and telling you more about this opportunity to be part of a growing company, engineering organization, and to support a fast-scaling set of products.


Walmart launches drone delivery service within a 50-mile radius of its northwest Arkansas store

Daily Mail - Science & tech

Residents in northwest Arkansas will now see drones soaring through the sky that are delivering goods to people's homes who ordered from the local Walmart Neighborhood Market. Walmart and its partner, drone-maker Zipline, rolled out the service on Thursday, and said it will ship'thousands of products' to customers within a 50-mile radius of the store in Pea Ridge. The companies designed a'first-of-its kind' 25-foot-tall platform, located the back of the Walmart, which serves as the infrastructure for take-off and landing for drones. Orders are placed through the Zipline app, which are collected by Walmart employees who then hand them off to Zipline staff, who prepare the aircraft for launch. Residence in northwest Arkansas will now see drones soaring through the sky to deliver goods to people's homes who ordered from the local Walmart Neighborhood Market Walmart has a made huge push into the drone delivery market over the years, as it has conducted pilot programs in several states such as North Carolina and Texas.


Walmart is testing fully autonomous delivery trucks in Bentonville, Arkansas, hometown

Daily Mail - Science & tech

Walmart has revealed it is using fully driverless trucks to bring groceries from a fulfillment center to one of its Arkansas supermarkets, in a move that will cut costs and address the ongoing labor shortage affecting retail supply chains. Twelve hours a day, apair of trucks are running on a seven-mile loop of public roads from a fulfillment center to the Walmart on Regional Airport Boulevard in Bentonville, Arkansas, where the mega-retailer is headquartered. From there customers can conveniently pick up their orders. Walmart started driverless deliveries in August using autonomous trucks from Palo Alto, California-based start-up Gatik, but waited to make the announcement until Monday, after two months of incident-free deliveries. The trucking industry has faced a record worker shortage since the pandemic started, Chris Spear, president of the American Trucking Associations, told CNN, with 80,000 drivers still needed.


Neural Embeddings of Urban Big Data Reveal Emergent Structures in Cities

arXiv.org Artificial Intelligence

In this study, we propose using a neural embedding model-graph neural network (GNN)- that leverages the heterogeneous features of urban areas and their interactions captured by human mobility network to obtain vector representations of these areas. Using large-scale high-resolution mobility data sets from millions of aggregated and anonymized mobile phone users in 16 metropolitan counties in the United States, we demonstrate that our embeddings encode complex relationships among features related to urban components (such as distribution of facilities) and population attributes and activities. The spatial gradient in each direction from city center to suburbs is measured using clustered representations and the shared characteristics among urban areas in the same cluster. Furthermore, we show that embeddings generated by a model trained on a different county can capture 50% to 60% of the emergent spatial structure in another county, allowing us to make cross-county comparisons in a quantitative way. Our GNN-based framework overcomes the limitations of previous methods used for examining spatial structures and is highly scalable. The findings reveal non-linear relationships among urban components and anisotropic spatial gradients in cities. Since the identified spatial structures and gradients capture the combined effects of various mechanisms, such as segregation, disparate facility distribution, and human mobility, the findings could help identify the limitations of the current city structure to inform planning decisions and policies. Also, the model and findings set the stage for a variety of research in urban planning, engineering and social science through integrated understanding of how the complex interactions between urban components and population activities and attributes shape the spatial structures in cities.


Raman spectroscopy shows how immunotherapy changes tumours

#artificialintelligence

Johns Hopkins University engineers have used Raman spectroscopy and machine learning to understand the complex changes in tumours after immunotherapy. "Immunotherapy really works like magic and has fundamentally changed the way we view how cancer can be managed", said Ishan Barman, a Johns Hopkins associate professor in mechanical engineering and a co-author of the study, which was conducted in collaboration with colleagues at the University of Arkansas. "However, only around 25 % of patients derive benefit from it, so there's an urgent need to identify predictive biomarkers to determine who should receive the treatment." Using Raman spectroscopy, the team probed colon cancer tumours in mice treated with the two types of immune checkpoint inhibitors used in immunotherapy, as well as a control group of untreated mice. "This is the first study that shows the ability of this optical technique to identify early response or resistance to immunotherapy", said Santosh Paidi, one of the lead authors who worked on the research as a mechanical engineering PhD student at Johns Hopkins.


Hernando de Soto Bridge inspector fired for not flagging crack in span

FOX News

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. An unidentified inspector who failed to discover a crack in the Hernando de Soto Bridge linking Arkansas and Tennessee that prompted the span's closure was fired Monday morning and may face charges, according to reports. Arkansas Department of Transportation Director Lorie Tudor said the inspector was fired after drone video showed the crack on the bridge spanning the Mississippi River in May 2019. "This is unacceptable," Tudor said at a news conference.


Benchmarking Deep Learning Classifiers: Beyond Accuracy

arXiv.org Artificial Intelligence

Previous research evaluating deep learning (DL) classifiers has often used top-1/top-5 accuracy. However, the accuracy of DL classifiers is unstable in that it often changes significantly when retested on imperfect or adversarial images. This paper adds to the small but fundamental body of work on benchmarking the robustness of DL classifiers on imperfect images by proposing a two-dimensional metric, consisting of mean accuracy and coefficient of variation, to measure the robustness of DL classifiers. Spearman's rank correlation coefficient and Pearson's correlation coefficient are used and their independence evaluated. A statistical plot we call mCV is presented which aims to help visualize the robustness of the performance of DL classifiers across varying amounts of imperfection in tested images. Finally, we demonstrate that defective images corrupted by two-factor corruption could be used to improve the robustness of DL classifiers. All source codes and related image sets are shared on a website (http://www.animpala.com) to support future research projects.


Google, J.B. Hunt ink deal to tackle US transport, supply chain challenges

ZDNet

Google and J.B. Hunt have agreed to form a "strategic alliance" to improve existing US supply chains and transport networks. Announced on Wednesday, the partnership gives J.B. Hunt the opportunity to harness Google's cloud technologies and further the company's goals in "creating the most efficient transportation network in North America." Lowell, Arkansas-based J.B. Hunt is an S&P 500 company that provides shipping, trucking, and logistics services in the US, Canada, and Mexico. The firm is an advocate of intelligent shipping technologies -- such as the cloud, machine learning (ML), artificial intelligence (AI), and mobility -- and pitches smarter solutions as a means to combat fluctuating demand, supply chain challenges, and inventory management. The J.B. Hunt 360 platform is used by clients to track and manage shipments, loads, quotes and bookings, and is touted as a means to "centralize data from across different systems, helping reduce waste, friction, and inefficiencies."


Walmart partners with Zipline for glider drone delivery tests

Engadget

Walmart has had drone delivery ambitions for years now, and today they've announced a partnership with Zipline for on-demand delivery of "health and wellness" products. Zipline drones aren't the quadcopters that most think of for these types of delivery services. Instead, they're gliders that have longer range and won't just drop out of the sky if something fails. Trial deliveries using Zipline's drones will take place near Walmart headquarters in northwest Arkansas with a plan to start early next year. Walmart says that the Zipline drones will be able to operate within a 50-mile radius, and they produce no carbon emissions.


Walmart to start using autonomous drones for 1-hour delivery

Mashable

Starting next year, certain Walmart orders will literally fly to your door. The retailer announced a trial run with medical supply drone delivery company Zipline early Monday. Only medical and health and wellness products from Walmart will be part of the pilot program and it'll only be in Northwest Arkansas in early 2021. The drones will cover a 50-mile radius around Walmart headquarters in Bentonville, Arkansas. They can haul up to four pounds of cargo and fly up to 80 mph.