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It is shown how to reconstruct the stacking sequence from the pairwise correlation functions between layers in close-packed structures. First, of theoretical interest, the analytical formulation and solution of the problem are presented when the exact pairwise correlation counts are known. In the second part, the practical problem is approached. A simulated annealing procedure is developed to solve the problem using as initial guess approximate solutions from previous treatments. The robustness of the procedure is tested with synthetic data, followed by an experimental example. The developed approach performs robustly over different synthetic and experimental data, comparing favorably with the reported methods.

Yaya Wang
Apr 7, 2020; 133:jcs228072-jcs228072
REVIEW

Full Text:

Machine learning algorithms can sometimes do a great job with a little help from human expertise, at least in the field of materials science. In many specialized areas of science, engineering and medicine, researchers are turning to machine learning algorithms to analyze data sets that have grown too large for humans to understand. In materials science, success with this effort could accelerate the design of next-generation advanced functional materials, where development now usually depends on old-fashioned trial and error. By themselves, however, data analytics techniques borrowed from other research areas often fail to provide the insights needed to help materials scientists and engineers choose which of many variables to adjust -- and the techniques can't account for dramatic changes such as the introduction of a new chemical compound into the process. In a new study, researchers explain a technique known as dimensional stacking, which shows that human experience still has a role to play in the age of machine intelligence. The machines gain an edge at solving a challenge when the data to be analyzed are intelligently organized based on human knowledge of what factors are likely to be important and related. "When your machine accepts strings of data, it really does matter how you are putting those strings together," said Nazanin Bassiri-Gharb, the paper's corresponding author and a scientist at the Georgia Institute of Technology. "We must be mindful that the organization of data before it goes to the algorithm makes a difference. If you don't plug the information in correctly, you will get a result that isn't necessarily correlated with the reality of the physics and chemistry that govern the materials."

Image credit: Rob Felt/Georgia Tech

Source: Streetwise Reports   05/06/2020

Biopharmaceutical company Horizon Therapeutics Inc. (HZNP:NASDAQ), which focuses on developing and commercializing medicines for treatment of rare and rheumatic diseases, today announced its Q1/20 financial results for the period ending March 31, 2020. The firm began by advising that it is raising its FY/20 net sales guidance and revised its adjusted EBITDA guidance.

For Q1/20 the company reported that net sales increased by 27% to $355.9 million over Q1/19. The firm provided a breakdown of revenue by business unit and listed that in Q1/20 compared with Q1/19, its Orphan segment net sales increased 47% to $245.4 Million, KRYSTEXXA® net sales rose by 78% to $93.3 million and TEPEZZA (teprotumumab-trbw) net sales were $23.5 million, which exceeded expectations.

The firm advised that it is increasing FY/20 net sales guidance to $1.40-1.45 billion driven primarily by significantly higher TEPEZZA net sales and reflecting anticipated impacts from COVID-19. The company also presented revised FY/20 adjusted EBITDA guidance of $450-500 million, which reflects increased TEPEZZA program investment to support higher-than-expected demand.

The firm indicated that in Q1/20 it posted a GAAP net loss of $13.6 million with adjusted EBITDA of $107.2 million and non-GAAP net income of $83.2 million.

The company's Chairman, President and CEO Timothy Walbert commented, "We had a very strong start to 2020, highlighted by the early approval and rapid uptake of TEPEZZA, which significantly exceeded expectations, excellent KRYSTEXXA growth and our recent acquisition of HZN-825...We are increasing our full-year net sales guidance to account for significantly higher TEPEZZA net sales that more than offset the expected impact from COVID-19 this year, and we are widening both our net sales and adjusted EBITDA guidance ranges to account for future uncertainty. The fundamentals of our business are strong, including a robust cash position, and we continue to be very well positioned for the long term."

The company noted that it received FDA approval for TEPEZZA for the treatment of thyroid eye disease (TED) earlier this year in January. The firm described TED as "a rare, serious, progressive and vision-threatening autoimmune disease, and is associated with proptosis (eye bulging), diplopia (double vision), blurred vision, pain and facial disfigurement." The company further s explained that "TEPEZZA, a fully human monoclonal antibody insulin-like growth factor-1 receptor (IGF-1R) inhibitor, is the first and only FDA-approved medicine for the treatment of TED."

Horizon Therapeutics is a biopharmaceutical company headquartered in Dublin, Ireland. The firm researches, develops and commercializes medicines for treatment of rare and rheumatic diseases.

Horizon has a market capitalization of around $7.1 billion with approximately 190.2 million shares outstanding and a short interest of about 4.9%. HZNP shares opened 10% higher today at $44.19 (+$3.81, +10.19%) over yesterday's $37.38 closing price and reached a new 52-week high price this morning of $43.57. The stock has traded today between $40.00 and $43.90 per share and is currently trading at $42.95 (+$5.57, +14.90%).

Disclosure:
1) Stephen Hytha compiled this article for Streetwise Reports LLC and provides services to Streetwise Reports as an independent contractor. He or members of his household own securities of the following companies mentioned in the article: None. He or members of his household are paid by the following companies mentioned in this article: None.
2) The following companies mentioned in this article are billboard sponsors of Streetwise Reports: None. Click here for important disclosures about sponsor fees.
3) Comments and opinions expressed are those of the specific experts and not of Streetwise Reports or its officers. The information provided above is for informational purposes only and is not a recommendation to buy or sell any security.
4) The article does not constitute investment advice. Each reader is encouraged to consult with his or her individual financial professional and any action a reader takes as a result of information presented here is his or her own responsibility. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. This article is not a solicitation for investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company mentioned on Streetwise Reports.
5) From time to time, Streetwise Reports LLC and its directors, officers, employees or members of their families, as well as persons interviewed for articles and interviews on the site, may have a long or short position in securities mentioned. Directors, officers, employees or members of their immediate families are prohibited from making purchases and/or sales of those securities in the open market or otherwise from the time of the interview or the decision to write an article until three business days after the publication of the interview or article. The foregoing prohibition does not apply to articles that in substance only restate previously published company releases.
6) This article does not constitute medical advice. Officers, employees and contributors to Streetwise Reports are not licensed medical professionals. Readers should always contact their healthcare professionals for medical advice.

Source: Streetwise Reports   05/07/2020

Oil and gas technology services and solutions company ION Geophysical Corp. (IO:NYSE) yesterday afternoon announced financial results for Q1/20 ending March 31, 2020.

The firm reported total net revenues of $56.4 million in Q1/20, which represented a 53% increase over $37.0 million in Q1/19. The company advised that the increase was due primarily to an increase in 2D multi-client data library sales.

For Q1/20, the firm additionally reported operating income of $6.3 million, compared to an operating loss of $15.9 million in Q1/19. The company further indicated that in Q1/20, it posted a net loss of $2.3 million, or ($0.16) per share, compared to a net loss of $21.4 million, or ($1.52) per share in Q1/19.

The company's President and CEO Chris Usher commented, "We achieved the best first quarter performance in six years despite challenges from both coronavirus and oil price volatility...Our strong revenues of $56 million generated positive operating income and $23 million in Adjusted EBITDA, and, as a result, we expect our liquidity position to improve as revenues are collected in the second quarter. Our first quarter results reflect the value of our offshore data library and validate the combined effectiveness of our strategic refocus and over $20 million cost reductions. Our team creatively closed a number of large multi-client contracts, some of which were delayed from the fourth quarter, even after E&P market dynamics changed. I remain confident in ION's value proposition to cost-effectively support customers' data-driven decision-making in this lower-for-longer exploration and production environment."

The company indicated that it has maintained a strong liquidity position in the face of energy market turmoil and the COVID-19 situation. The firm stated that as of March 31, 2020, it had total liquidity of $53.8 million, which consisted of $42.7 million in cash and $11.1 million remaining available balance under its $50.0 million revolving credit line.

ION Geophysical Corp. is a technology-focused company headquartered in Houston, Tex. that provides geophysical technology, services and solutions to the global oil and gas industry. Its products and technical services are designed to help oil and gas exploration and production companies obtain images of the earth's subsurface.

ION Geophysical started off the day with a market capitalization of around $25.1 million and an enterprise value of $115.7 million with approximately 15.03 million shares outstanding and a short interest of about 6.40%. IO shares opened more than 100% higher today at $3.37 (+$1.70, +101.80%) over yesterday's $1.67 closing price. The stock has traded between $2.84 to $4.36 per share today and is currently trading at $2.88 (+$1.21, +72.46%).

Disclosure:
1) Stephen Hytha compiled this article for Streetwise Reports LLC and provides services to Streetwise Reports as an independent contractor. He or members of his household own securities of the following companies mentioned in the article: None. He or members of his household are paid by the following companies mentioned in this article: None.
2) The following companies mentioned in this article are billboard sponsors of Streetwise Reports: None. Click here for important disclosures about sponsor fees.
3) Comments and opinions expressed are those of the specific experts and not of Streetwise Reports or its officers. The information provided above is for informational purposes only and is not a recommendation to buy or sell any security.
4) The article does not constitute investment advice. Each reader is encouraged to consult with his or her individual financial professional and any action a reader takes as a result of information presented here is his or her own responsibility. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. This article is not a solicitation for investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company mentioned on Streetwise Reports.
5) From time to time, Streetwise Reports LLC and its directors, officers, employees or members of their families, as well as persons interviewed for articles and interviews on the site, may have a long or short position in securities mentioned. Directors, officers, employees or members of their immediate families are prohibited from making purchases and/or sales of those securities in the open market or otherwise from the time of the interview or the decision to write an article until three business days after the publication of the interview or article. The foregoing prohibition does not apply to articles that in substance only restate previously published company releases.

( Companies Mentioned: IO:NYSE, )

Evidence exists linking three cancers and two other health problems with chemicals used in herbicides in the Vietnam War, a committee of the Institute of Medicine (IOM) has concluded.

A bold national initiative is needed to reduce the enormous health burden of sexually transmitted diseases (STDs) in the United States, according to a new report from a committee of the Institute of Medicine.

Insufficient evidence exists to support claims that taking megadoses of dietary antioxidants, such as selenium and vitamins C and E, or carotenoids, including beta-carotene, can prevent chronic diseases, says the latest report on Dietary Reference Intakes (DRIs) from the Institute of Medicine of the National Academies.

Recent strides in biotechnology offer the promise of new and innovative applications -- from edible vaccines to protein-based electronics components.

To meet the bodys daily energy and nutritional needs while minimizing risk for chronic disease, adults should get 45 percent to 65 percent of their calories from carbohydrates, 20 percent to 35 percent from fat, and 10 percent to 35 percent from protein.

The vast majority of healthy people adequately meet their daily hydration needs by letting thirst be their guide, says the newest report on nutrient recommendations from the Institute of Medicine of the National Academies.

A new report from the Institute of Medicine finds suggestive but limited evidence that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing ischemic heart disease and Parkinsons disease for Vietnam veterans.

Despite being used for several decades, test-based incentives have not consistently generated positive effects on student achievement, says a new report from the National Research Council.

A new data network that integrates emerging research on the molecular makeup of diseases with clinical data on individual patients could drive the development of a more accurate classification of disease and ultimately enhance diagnosis and treatment, says a new report from the National Research Council.

Given the minimal impact of long prison sentences on crime prevention and the negative social consequences and burdensome financial costs of U.S. incarceration rates, which have more than quadrupled in the last four decades, the nation should revise current criminal justice policies to significantly reduce imprisonment rates, says a new report from the National Research Council.

Myalgic Encephalomyelitis/Chronic Fatigue Syndrome -- commonly referred to as ME/CFS -- is a legitimate, serious, and complex systemic disease that frequently and dramatically limits the activities of affected individuals, says a new report from the Institute of Medicine.

Efforts to convert civilian research reactors from weapon-grade highly enriched uranium (HEU) to low enriched uranium (LEU) fuels are taking significantly longer than anticipated, says a congressionally mandated report from the National Academies of Sciences, Engineering, and Medicine.

Joint statements from the national science academies of the G7 nations were delivered today to the Italian government in advance of the G7 Summit to be held in Taormina, Italy, at the end of May.

A new report from the National Academies of Sciences, Engineering, and Medicine outlines how to examine whether specific levels of nutrients or other food substances (NOFSs) can ameliorate the risk of chronic disease and recommends ways to develop dietary reference intakes (DRI) based on chronic disease outcomes.

Policymakers’ efforts to reduce threats from improvised explosive devices (IEDs) should include greater oversight of precursor chemicals sold at the retail level – especially over the Internet – that terrorists, violent extremists, or criminals use to make homemade explosives, says a new report from the National Academies of Sciences, Engineering, and Medicine.

NASA, the National Oceanic and Atmospheric Administration (NOAA), and the United States Geological Survey (USGS) should implement a coordinated approach for their space-based environmental observations to further advance Earth science and applications for the next decade, says a new report by the National Academies of Sciences, Engineering, and Medicine.

A single breakthrough discovery for managing citrus greening in Florida in the future is unlikely, says a new report by the National Academies of Sciences, Engineering, and Medicine.

Black lung disease cases in coal miners have been increasing since 2000 for uncertain reasons.

As new evidence about climate change and sea-level rise in South Florida continues to emerge, agencies responsible for the restoration of the Everglades should conduct a mid course assessment that rigorously analyzes scenarios of future change to the region’s ecosystem in its planning, says a new congressionally mandated report by the National Academies of Sciences, Engineering, and Medicine.

Given the current state of quantum computing and the significant challenges that still need to be overcome, it is highly unlikely that a quantum computer that can compromise public-key cryptography – a basis for the security of most of today’s computers and networks – will be built within the next decade, says a new report by the National Academies of Sciences, Engineering, and Medicine.

Biotechnology has the potential to be a part of the solution in protecting forest trees against destructive pest and disease outbreaks

The U.S. needs stronger policies and guidance to combat Legionnaires’ disease, a form of pneumonia caused by inhaling air contaminated with Legionella bacteria from water systems, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The opioid epidemic in the U.S. is driving a simultaneous epidemic of infectious diseases — including HIV, hepatitis C virus (HCV) and bacterial infections, and sexually transmitted infections — but workforce shortages, stigma, and financial and policy barriers are preventing the integration of opioid use disorder (OUD) and infectious disease services, says a new report from the National Academies of Sciences, Engineering, and Medicine.

WASHINGTON — In response to the COVID-19 outbreak, the White House Office of Science and Technology Policy has asked the National Academies of Sciences, Engineering, and Medicine to establish a Standing Committee on Emerging Infectious Diseases and 21st Century Health Threats.

Formed earlier this month, the National Academies’ Standing Committee on Emerging Infectious Diseases and 21st Century Health Threats was assembled at the request of the White House Office of Science and Technology Policy and the Office of the Assistant Secretary for Preparedness and Response in response to the COVID-19 outbreak.

The recently formed National Academies Standing Committee on Emerging Infectious Diseases and 21st Century Health Threats, assembled at the request of the White House Office of Science and Technology Policy and the U.S. Department of Health and Human Services’ Office of the Assistant Secretary for Preparedness and Response in response to the COVID-19 outbreak, has been providing rapid expert consultations on several topics, such as social distancing and severe illness in young adults.

The recently formed National Academies Standing Committee on Emerging Infectious Diseases and 21st Century Health Threats, assembled at the request of the White House Office of Science and Technology Policy (OSTP) and the U.S. Department of Health and Human Services’ Office of the Assistant Secretary for Preparedness and Response in response to the COVID-19 outbreak, has been providing rapid expert consultations on several topics, such as social distancing and severe illness in young adults.

A new rapid expert consultation from a standing committee of the National Academies of Sciences, Engineering, and Medicine responds to questions from the White House Office of Science and Technology Policy (OSTP) regarding survival of the COVID-19 virus in relation to temperature and humidity and potential for seasonal reduction and resurgence of cases.

A new rapid expert consultation from a standing committee of the National Academies of Sciences, Engineering, and Medicine.

A new rapid expert consultation from a standing committee of the National Academies of Sciences, Engineering, and Medicine responds to questions from the White House Office of Science and Technology Policy (OSTP) regarding the effectiveness of homemade fabric masks to protect others from the viral spread of COVID-19 from potentially contagious asymptomatic or presymptomatic individuals.