Добавить новость
ru24.net
News in English
Август
2024

Новости за 21.08.2024

Clovis points and foreshafts under braced weapon compression: Modeling Pleistocene megafauna encounters with a lithic pike

Plos.org 

by R. Scott Byram, Kent G. Lightfoot, Jun Ueno Sunseri

Historical and ethnographic sources depict use of portable braced shaft weapons, or pikes, in megafauna hunting and defense during Late Holocene millennia in North and South America, Africa, Eurasia and Southeast Asia. Given the predominance of megafauna in Late Pleistocene North America during the centuries when Clovis points appeared and spread across much of the continent (13,050–12,650 cal BP), braced weapons may have been used in... Читать дальше...

Amantea House / Andrea Murao Arquitetura e Interiores

Archdaily.com 

When the Andrea Murao Office began developing this project, the main inspiration was to create a space that combined comfort and modernity in a casual and contemporary style. The idea was to make a house that was more than just functional; the office wanted it to have a welcoming atmosphere, where every detail contributed to a sense of well-being. For Andrea Murao, natural light was essential, so she prioritized maximizing sunlight. The single-story structure of the house, with its sloped roof and high ceiling in the living room... Читать дальше...

Adaptive fixed-time TSM for uncertain nonlinear dynamical system under unknown disturbance

Plos.org 

by Saim Ahmed, Ahmad Taher Azar, Haoping Wang

For nonlinear systems subjected to external disturbances, an adaptive terminal sliding mode control (TSM) approach with fixed-time convergence is presented in this paper. The introduction of the fixed-time TSM with the sliding surface and the new Lemma of fixed-time stability are the main topics of discussion. The suggested approach demonstrates quick convergence, smooth and non-singular control input, and stability within a fixed time. Existing... Читать дальше...



Linkages between environmental sustainability, disaggregated emission, renewable energy, and energy efficiency: An evidence from BRI countries

Plos.org 

by Fei Meng, Weiyan Sheng, Muhammad Waqas Akbar

This paper examines the long-term and short-run causative relationship among environmental sustainability, energy efficiency, renewable energy and carbon emissions from all over sources (coal, oil and fossil fuels) and sector wise division (heat and power, transportation, residential, manufacturing and other sectors. The empirical evidence presented in this study is derived from a balanced panel dataset spanning the annual periods from 2000 to 2021. Читать дальше...

Analysis of lithium trade patterns and influencing factors in the regions along the "Belt and Road"

Plos.org 

by Ziyun Ruan, Peng Du, Yanan Jiao

Lithium has broad applications in several emerging industries and fields, including high energy batteries, energy storage, aerospace, and controlled nuclear reactions. Currently, the discrepancy between the supply and demand for lithium resources increases, and its distribution is uneven. Within the framework of the "Belt and Road" Initiative, the lithium trade pattern evolves constantly. However, the trade pattern of lithium in the nations along the "Belt... Читать дальше...

Perceived school service quality and vocational students’ learning satisfaction: Mediating role of conceptions of vocational education

Plos.org 

by Tao Guo, Tianxin Li, Zhanyong Qi

This study examined the relationships among vocational students’ perceptions of school service quality, their learning satisfaction, and their conceptions of vocational education in Chinese secondary vocational schools. Using a quantitative approach, data were collected from 10,721 students through multistage sampling. Perceived school service quality was assessed using the five-factor SERVPERF instrument, learning satisfaction was measured with the one-factor SSwLA scale... Читать дальше...

Personality traits and self-control: The moderating role of neuroticism

Plos.org 

by Fredrik A. Nilsen, Henning Bang, Espen Røysamb

Self-control is important for mental and physical health, and personality traits are vital antecedents for self-control. Previous studies suggest that conscientiousness and extraversion enhance self-control, whereas neuroticism hampers it. However, the link between personality and self-control has mostly been studied using a narrow conceptualization of self-control, as the ability to resist impulses, thus excluding initiatory self-control. Читать дальше...

Increased homicide played a key role in driving Black-White disparities in life expectancy among men during the COVID-19 pandemic

Plos.org 

by Michael T. Light, Karl Vachuska

Disparities in life expectancy between Black and White Americans increased substantially during the COVID-19 pandemic. During the same period, the US experienced the largest increase in homicide on record. Yet, little research has examined the contribution of homicide to Black-White disparities in longevity in recent years. Using mortality data and population estimates, we conduct a comprehensive decomposition of the drivers of Black-White inequality in... Читать дальше...

Новости России
Москва

ТСД SAOTRON RT41 GUN: практичный, производительный, надёжный


Slaveholder ancestry and current net worth of members of the United States Congress

Plos.org 

by Neil K. R. Sehgal, Ashwini R. Sehgal

Background

Whether and how much past slavery affects contemporary social and economic conditions in the United States is an area of active debate. Newly available data on which members of the United States Congress are descendants of slaveholders provides an opportunity to examine this topic. This study sought to determine the relationship between slaveholder ancestry and net worth among members of Congress.

Methods

Total assets and liabilities... Читать дальше...

Network disruption via continuous batch removal: The case of Sicilian Mafia

Plos.org 

by Mingshan Jia, Pasquale De Meo, Bogdan Gabrys, Katarzyna Musial

Network disruption is pivotal in understanding the robustness and vulnerability of complex networks, which is instrumental in devising strategies for infrastructure protection, epidemic control, cybersecurity, and combating crime. In this paper, with a particular focus on disrupting criminal networks, we proposed to impose a within-the-largest-connected-component constraint in a continuous batch removal disruption process.... Читать дальше...

A note on the Wilcoxon-Mann-Whitney test and tied observations

Plos.org 

by Markus Neuhäuser, Graeme D. Ruxton

Recently, it was recommended to omit tied observations before applying the two-sample Wilcoxon-Mann-Whitney test McGee M. et al. (2018). Using a simulation study, we argue for exact tests using all the data (including tied values) as a preferable approach. Exact tests, with tied observations included guarantee the type I error rate with a better exploitation of the significance level and a larger power than the corresponding tests after the omission of tied observations. Читать дальше...


Спорт в России и мире

Новости спорта


Новости тенниса
ATP

Пекин (ATP). 2-й круг. Котов сыграет с Коболли, Сафиуллин – с Синнером, Медведев – с Маннарино






В Оренбуржье житель Уфы отвлекся на телефонный звонок и спровоцировал ДТП

Заммэра Москвы Ефимов: с января в столице построили 37 объектов образования

Артисты Северо-Осетинского театра из Владикавказа отбыли на большие гастроли в Москву

Тула поднялась в рейтинге городов России по уровню зарплат