Results 11 to 20 of about 1,326,125 (142)

Auto-focus technology and its application based on image processing [PDF]

open access: yes, 2009
Auto-focusing technique is an important method to improve the precision,intelligentization,automatization for the indentation diameter measurement.The paper introduces an auto-focus method of indentation diameter measurement based on image processing ...
Chen, Xiaomei, Yang, Tao, Zuo, Yong
core   +3 more sources

Lost In Translation? A Report Into Action Research On The Effects Of Interpretation On Learning And Teaching [PDF]

open access: yes, 2014
This paper follows from Zeng and Burrows (2013), in which the issue of the effects of interpretation on learning and teaching was introduced. Action research was completed in China in 2013 and this paper reports some of the analysis and results of that ...
Zeng, Jiajin, Burrows, Jane
core   +1 more source

Telephone Communication, ICT Use, and Digitalization in Healthcare Performance

open access: yesWorld Affairs, Volume 189, Issue 1, Spring 2026.
ABSTRACT This study explores the impact of telephone communication, ICT use, and digitalization on healthcare performance in sub‐Saharan Africa (SSA), a region facing challenges such as limited infrastructure and resources, geographical barriers, and a high disease burden.
Emmanuel K. Manu   +2 more
wiley   +1 more source

Assessing limits of sustainable seed harvest in wild plant populations

open access: yesConservation Biology, Volume 39, Issue 5, October 2025.
Abstract Seed harvesting from wild plant populations is key for ecological restoration, but it may threaten the persistence of the source populations. Consequently, several countries have set guidelines limiting the proportions of harvestable seeds. However, these guidelines are inconsistent and lack a solid empirical basis.
Anna Bucharova   +3 more
wiley   +1 more source

To What Extent Does Military Expenditure Mitigate the Effect of Terrorism on Economic Complexity in Europe?

open access: yesPolitics &Policy, Volume 53, Issue 5, October 2025.
ABSTRACT This study examines how military expenditure moderates the negative effect of terrorism on economic complexity in Europe. Terrorism is proxied by terrorism‐related incidences, fatalities, injuries, and hostages. The study utilizes a panel dataset comprising 33 European economies spanning the period 2011–2022.
Ekene ThankGod Emeka   +2 more
wiley   +1 more source

Automated multivolume placental reconstruction using three‐dimensional power Doppler ultrasound and infrared camera tracking

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.
ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue   +5 more
wiley   +1 more source

International remittances and productivity in Sub‐Saharan Africa 撒哈拉以南非洲的国际汇款与生产率 Remesas internacionales y productividad en áfrica subsahariana

open access: yesWorld Affairs, Volume 187, Issue 3, Page 317-331, Fall 2024.
Abstract This research investigates how enhancing remittances affects total factor productivity (TFP) dynamics in Sub‐Saharan Africa. The Generalized Method of Moments empirical strategy is adopted for this study and the engaged TFP dynamics are: TFP, real TFP, welfare TFP, and real welfare TFP.
Simplice A. Asongu, Joseph Nnanna
wiley   +1 more source

一种微扭矩力学试验机及其测试方法

open access: yes, 2012
本发明涉及一种微扭矩力学试验机及其测试方法。该试验机包括:控制装置和试验机主机,所述控制装置用于设置试验方法,向试验机主机发出命令和分析处理从试验机主机得到的实验数据;所述试验机主机用于对试样进行加载。测试方法包括:通过定制的试验软件控制信号发生模块产生一电压信号,经调理放大后驱动试验机主机工作;信号采集模块采集角度信号和线圈的驱动信号;将采集到的角度信号换算为旋转角,将采集到的线圈驱动信号换算为扭矩;按照力学模型进行数据处理,得出被测试样的切应力一切应变曲线,进而可进一步计算出剪切模量和剪切强度 ...
郇勇, 张泰华
core   +2 more sources

一种新的基于四阶累积量的DOA估计算法

open access: yes四川大学学报. 自然科学版, 2011
提出了一种新的用于均匀线阵的四阶累积量DOA估计算法.针对传统MUSIC-like算法中四阶累积量矩阵存在大量冗余信息的情况,本文算法提出了一种新的四阶累积量矩阵构造方法.用该方法构造的四阶累积量矩阵在保证阵列扩展性能的同时,去掉了MUSIC-like算法中四阶累积量矩阵的冗余信息,降低了矩阵的阶数.与MUSIC-like算法相比,本文算法的运算复杂度显著降低,但仍保持了同等的估计性能.实验仿真表明了提出方法的有效性.
朱敏, 何培宇
doaj  

Tourism management synergies in Sub‐Saharan Africa 撒哈拉以南非洲的旅游管理协同效应 Sinergias en la gestión turística en el África subsahariana

open access: yesWorld Affairs, Volume 187, Issue 1, Page 63-77, Spring 2024.
Abstract The purpose of this study is to assess how some governance dynamics, such as political stability and the rule of law, moderate the incidence of some macroeconomic factors (i.e., domestic investment and trade openness) on tourism development. The focus of this study is on 47 countries in sub‐Saharan Africa with data from 2002 to 2018, and the ...
Simplice A. Asongu   +3 more
wiley   +1 more source

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