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Principal Component Analysis
Conversion of a set of observations of possibly correlated variables into a set of values of linearly uncorrelated variables called principal components
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174 articles (0.03 seconds)
Study describes zinc oxide nanoparticle strategy for inactivation of multidrug-resistant bacteria
a year ago
An article published in the Journal of Environmental Chemical Engineering describes a possible strategy for promoting selective inhibition of multidrug-resistant bacteria, which are increasingly abundant owing to the indiscriminate use of antibiotics and are therefore a major human health hazard.
Science & Technology
phys.org
Enhancing cultivated strawberry diversity and disease resistance
a year ago
Cultivated strawberries are now the basis of a multi-billion-dollar global industry. To meet the challenges posed by increasing demand, climate change, and water and land scarcity, new germplasm needs to be collected to improve cultivars. However, managing clonally propagated germplasm collections such as strawberry is costly, while limited genotypic and phenotypic characterization hinders effective germplasm…
Science & Technology
phys.org
Research team validates big data's role in analyzing consumer behavior
a year ago
The ongoing COVID-19 endemic phase has brought a consistent rise in international travelers. The Credit Finance Association revealed that overseas expenditures on personal debit cards from seven credit card companies had surged by approximately 38% year on year as of the third quarter of 2023.
Science & Technology
phys.org
A framework for screening pharmaceuticals and personal care products in landfill leachates
a year ago
The prevalence of pharmaceuticals and personal care products (PPCPs) in the environment has generated increasing concern due to the potential threats they pose to the ecosystem and human health. Landfill leachate is an important source of PPCPs in water; however, it has rarely been involved in source apportionment due to the lack of indicator-PPCPs (i-PPCPs) in landfill leachates.
Science & Technology
phys.org
[R] 85% of the variance in language model performance is explained by a single factor (g, a unified measure of LLM…
2 years ago
Posted in r/MachineLearning by u/dealic • 243 points and 112 comments
Science & Technology
old.reddit.com
Understanding sensitive soils to improve quality of surrounding water
2 years ago
Researchers from the Swedish University of Agricultural Sciences in Uppsala are investigating the impact of phosphorous—both that which exists naturally in soil and that which has been added as manure or fertilizer—on sensitive soils and local aquatic systems.
Science & Technology
phys.org
Transient naive reprogramming corrects hiPS cells functionally and epigenetically - Nature
2 years ago
A new reprogramming strategy used to produce human induced pluripotent stem cells from somatic cells results in epigenetic and functional profiles that are highly similar to those of human embryonic stem cells.
Science & Technology
www.nature.com
A Hacker's Guide to Machine Learning
2 years ago
Welcome to "A Hacker's Guide to Machine Learning" (HGML). This book is designed to empower you with the knowledge, skills, and confidence to apply machine learning techniques to real-world problems. This guide lightly touches on theoretical aspects of machine learning, while it focuses on practical applications and provides a hands-on approach that you can use across a variety of domains.It's critical to note that…
Science & Technology
812142374009.gumroad.com
Ultra-processed food intake and risk of cardiovascular disease: prospective cohort study (NutriNet-Santé)
2 years ago
Objective To assess the prospective associations between consumption of ultra-processed foods and risk of cardiovascular diseases. Design Population based cohort study. Setting NutriNet-Santé cohort, France 2009-18. Participants 105 159 participants aged at least 18 years. Dietary intakes were collected using repeated 24 hour dietary records (5.7 for each participant on average), designed to register…
Science & Technology
www.bmj.com
Linear Diffusion: Building a Diffusion Model from linear Components
2 years ago
In this post we walk through the architecture of diffusion models and show how to build one using only linear models as components!
Science & Technology
www.countbayesie.com
Perseus: A Fail-Slow Detection Framework for Cloud Storage Systems
2 years ago
Article URL: https://www.micahlerner.com/2023/04/16/perseus-a-fail-slow-detection-framework-for-cloud-storage-systems.html Comments URL: https://news.ycombinator.com/item?id=35603717 Points: 1 # Comments: 0
Science & Technology
www.micahlerner.com
Understanding Capsule Networks
2 years ago
Article URL: http://hdc.cs.arizona.edu/~mwli/understanding-capsule-network/writing/ Comments URL: https://news.ycombinator.com/item?id=35602759 Points: 1 # Comments: 0
Science & Technology
hdc.cs.arizona.edu
Genetic contribution from the Stone Age may influence our chance to have a long life
2 years ago
Our lifestyle has a very big influence on our life expectancy, such as our level of fitness, or whether we smoke or are overweight. Other external factors like social contacts, environmental conditions or education are also important. In addition, our genes also help determine how long we may live. Longevity in humans means living to 95 years and older in relatively good health.
Science & Technology
phys.org
Restoration and content analysis of ancient manuscripts via color space based segmentation
2 years ago
Ancient manuscripts are a rich source of history and civilization. Unfortunately, these documents are often affected by different age and storage related degradation which impinge on their readability and information contents. In this paper, we propose a document restoration method that removes the unwanted interfering degradation patterns from color ancient manuscripts. We exploit different color spaces to…
Science & Technology
journals.plos.org
Diversification of the ruminant skull—from microevolutionary processes to macroevolutionary patterns
2 years ago
Evolutionary biologists aim to form fundamental connections between microevolutionary processes and macroevolutionary patterns based on comparative datasets of population-level variation. In a new report on Science Advances, Daniel R. Rhoda and a team of scientists in evolutionary biology at the University of Chicago and the Jackson Laboratory in the U.S., analyzed a previously published dataset of ruminant…
Science & Technology
phys.org
Is This a Real Photo of Ukrainian Soldiers in Front of a Swastika Flag?
2 years ago
Some have argued that the photo, taken in 2014, was manipulated. Here, Snopes takes a closer look.
Fact-Checking
www.snopes.com
Sensing odor molecules on a graphene surface layered with self-assembled peptides
2 years ago
Graphene-based olfactory sensors that can detect odor molecules based on the design of peptide sequences were recently demonstrated by researchers at Tokyo Tech. The findings indicated that graphene field-effect transistors (GFETs) functionalized with designable peptides can be used to develop electronic devices that mimic olfactory receptors and emulate the sense of smell by selectively detecting odor molecules.
Science & Technology
phys.org
Contribution of Common Genetic Variants to Risk of Early-Onset Ischemic Stroke
2 years ago
Background and Objectives Current genome-wide association studies of ischemic stroke have focused primarily on late-onset disease. As a complement to these studies, we sought to identify the contribution of common genetic variants to risk of early-onset ischemic stroke. Methods We performed a meta-analysis of genome-wide association studies of early-onset stroke (EOS), ages 18–59 years, using individual-level data…
Science & Technology
n.neurology.org
Feline genetics help pinpoint first-ever domestication of cats
2 years ago
Nearly 10,000 years ago, humans settling in the Fertile Crescent, the areas of the Middle East surrounding the Tigris and Euphrates rivers, made the first switch from hunter-gatherers to farmers. They developed close bonds with the rodent-eating cats that conveniently served as ancient pest-control in society's first civilizations.
Science & Technology
phys.org
The negative impact of COVID-19 on working memory revealed using a rapid online quiz
2 years ago
Although coronavirus disease 2019 (COVID-19) affects the respiratory system, it can also have neurological consequences leading to cognitive deficits such as memory problems. The aim of our study was to assess the impact of COVID-19 on working memory function. We developed and implemented an online anonymous survey with a working memory quiz incorporating aspects of gamification to engage participants. 5428…
Science & Technology
journals.plos.org
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