NSTL国家科技图书文献中心

1. Revisiting Africa's Stroke Obstacles and Services (SOS) NSTL国家科技图书文献中心

Roushdy, Tamer | Elbassiouny, Ahmed ... - 《Neurological sciences》 - 2025,46(5) - 2171～2181 - 共11页

摘要： its burden and to face obstacles* in its* | stroke services and related obstacles* in 17 African* | obstacles in the implementation of telestroke services | regressing in a few. Managing obstacles* that are raised by* | BackgroundAs one of the most common non

关键词： Stroke in Africa | Stroke services | Obstacles | Stroke units in Africa | Stroke specialists | Stroke care

2. Effects of tapered helical obstacles on heat transfer in tubes NSTL国家科技图书文献中心

Al-Shami, Kawthar A. | Fagr, Mohsen H. - 《Chemical Product and Process Modeling》 - 2025,20(3) - 355～369 - 共15页

摘要： demonstrate that helical tapered obstacles* are helpful in* | effects of helical tapering barriers* on turbulent air* | due to the installation of helical barriers, which | In this computational investigation, the | flow through a horizontal circular tube with a

关键词： CFD | friction | heat exchangers | heat transfer | helical obstacles | helix ratio

3. Obstacles to implementing indigenous knowledge in climate change adaptation in Africa NSTL国家科技图书文献中心

Walter Leal Filho | Johannes M. Luetz ... - 《Journal of Environmental Management》 - 2025,373(Jan.) - 123678.1～123678.7 - 共7页

摘要： faces several obstacles. Understanding these obstacles | some of the most critical obstacles* that hinder the* | In a climate change context, indigenous and | local knowledge includes the use of traditional | practices, crop varieties, and land management techniques

关键词： Africa | Indigenous | Knowledge | Obstacles | Climate change adaptation

4. AGV Path Planning with Dynamic Obstacles Based on Deep Q-Network and Distributed Training NSTL国家科技图书文献中心

Tingbo Xie | Xifan Yao ... - 《International journal precision engineering manufacturing-green Technology》 - 2025,12(3) - 1005～1021 - 共17页

摘要： dynamic obstacles. To address the poor generalization | in complex scenarios with dynamic obstacles, this | with dynamic obstacles* are validated* | In logistics factories, Automated Guided | Vehicles (AGVs) are often tasked with transporting

关键词： Path planning | DQN | Distributed training | Dynamic obstacles

5. Balance recovery after trips is affected by the type of tripping obstacles NSTL国家科技图书文献中心

Xingda Qu | Baozhan Yang ... - 《Ergonomics》 - 2025,68(5) - 716～722 - 共7页

摘要： tripping obstacles. The present study aimed to determine | how different types of tripping obstacles* affect* | the two obstacles. Results showed that the board | obstacle and the other by a board-like obstacle. Balance | -like obstacle* led to longer step-off time, shorter*

关键词： Falls | trips | balance recovery | tripping obstacles | fall prevention

6. An Acoustic Scattering Problem for Three Obstacles With Different Boundary Conditions NSTL国家科技图书文献中心

Feng, Jiuzhi | Guan, Yi ... - 《Mathematical Methods in the Applied Sciences》 - 2025,48(8) - 8702～8714 - 共13页

摘要： impenetrable obstacles, each with different boundary | reconstruct obstacles* and give some numerical examples in* | scatterer, comprising a penetrable obstacle* and two* | We consider the direct and inverse time | -harmonic acoustic scattering problem for a mixed

关键词： boundary integral method | linear sampling method | mixed obstacles

7. Logical implications as mathematical objects: Characterizing epistemological obstacles experienced in introductory proofs courses NSTL国家科技图书文献中心

Norton, Anderson | Antonides, Joseph ... - 《Journal of Mathematical Behavior》 - 2025,79 - 共18页

摘要： investigate the epistemological obstacles* they experienced* | experiences of related epistemological obstacles. These | epistemological obstacles* experienced during interactions with* | Understanding the cognitive challenges | students experience in proofs-based mathematics courses

关键词： Proof and Proving | Epistemological Obstacles | Logical Reasoning | Logical Implication | Action-Object Theory | Reflective Abstraction

8. Information Entropy-Based Cooperative Surveillance in Areas with Obstacles NSTL国家科技图书文献中心

Samine Karimi | Fariborz Saghafi - 《Unmanned Systems》 - 2025,13(1) - 153～169 - 共17页

摘要：This paper solves the problem of searching a | surveillance region and tracking possible radio emitters by | multiple unmanned aerial vehicles cooperating through | communication links in a decentralized manner. An innovative | entropy-based approach is utilized to obtain the routes

关键词： Cooperative search | information entropy | task and route optimization | unmanned aerial vehicle | DF sensor | environmental obstacles

9. Two birds with one stone: can public financial support help firms to address financial and non-financial obstacles to research and innovation? NSTL国家科技图书文献中心

Mauricio Perez-Alani... | Helena Lenihan ... - 《Industry and innovation》 - 2025,32(3) - 243～280 - 共38页

摘要：Financial, knowledge and market obstacles* can* | financial obstacles* to invest in R&I. Building on the* | knowledge and market obstacles. Despite this, however | knowledge obstacles. Moreover, it increases the importance | that firms attach to their market obstacles. This

关键词： Non-financial obstacles | Financial obstacles | Research and innovation | Capability building | Public financial support for r&I

10. Dam-break flow over various obstacles configurations NSTL国家科技图书文献中心

Beteille, Elisa | Larrarte, Frederique ... - 《Journal of hydraulic research》 - 2025,63(2) - 156～170 - 共15页

摘要： obstacles configurations. The experiments are conducted in | volume of water. To assess the impact of obstacle | configurations on flow behaviour, two obstacle* sizes are* | Fast floods resulting from the failure of | hydraulic structures can be characterized by 'dam-break

关键词： Dam-break flow | flow visualization and imaging | laboratory study | particle image velocimetry (PIV) | RANS model | urban flood | SHALLOW-WATER EQUATIONS | CLIMATE-CHANGE | URBAN | RISK...

摘要： its burden and to face obstacles in its | stroke services and related obstacles in 17 African | obstacles in the implementation of telestroke services | regressing in a few. Managing obstacles that are raised by | BackgroundAs one of the most common non

关键词： Stroke in Africa | Stroke services | Obstacles | Stroke units in Africa | Stroke specialists | Stroke care

摘要： demonstrate that helical tapered obstacles are helpful in | effects of helical tapering barriers on turbulent air | due to the installation of helical barriers, which | In this computational investigation, the | flow through a horizontal circular tube with a

关键词： CFD | friction | heat exchangers | heat transfer | helical obstacles | helix ratio

摘要： faces several obstacles. Understanding these obstacles | some of the most critical obstacles that hinder the | In a climate change context, indigenous and | local knowledge includes the use of traditional | practices, crop varieties, and land management techniques

关键词： Africa | Indigenous | Knowledge | Obstacles | Climate change adaptation

摘要： dynamic obstacles. To address the poor generalization | in complex scenarios with dynamic obstacles, this | with dynamic obstacles are validated | In logistics factories, Automated Guided | Vehicles (AGVs) are often tasked with transporting

关键词： Path planning | DQN | Distributed training | Dynamic obstacles

摘要： tripping obstacles. The present study aimed to determine | how different types of tripping obstacles affect | the two obstacles. Results showed that the board | obstacle and the other by a board-like obstacle. Balance | -like obstacle led to longer step-off time, shorter

关键词： Falls | trips | balance recovery | tripping obstacles | fall prevention

摘要： impenetrable obstacles, each with different boundary | reconstruct obstacles and give some numerical examples in | scatterer, comprising a penetrable obstacle and two | We consider the direct and inverse time | -harmonic acoustic scattering problem for a mixed

关键词： boundary integral method | linear sampling method | mixed obstacles

摘要： investigate the epistemological obstacles they experienced | experiences of related epistemological obstacles. These | epistemological obstacles experienced during interactions with | Understanding the cognitive challenges | students experience in proofs-based mathematics courses

关键词： Proof and Proving | Epistemological Obstacles | Logical Reasoning | Logical Implication | Action-Object Theory | Reflective Abstraction

摘要：This paper solves the problem of searching a | surveillance region and tracking possible radio emitters by | multiple unmanned aerial vehicles cooperating through | communication links in a decentralized manner. An innovative | entropy-based approach is utilized to obtain the routes

关键词： Cooperative search | information entropy | task and route optimization | unmanned aerial vehicle | DF sensor | environmental obstacles

摘要：Financial, knowledge and market obstacles can | financial obstacles to invest in R&I. Building on the | knowledge and market obstacles. Despite this, however | knowledge obstacles. Moreover, it increases the importance | that firms attach to their market obstacles. This

关键词： Non-financial obstacles | Financial obstacles | Research and innovation | Capability building | Public financial support for r&I

摘要： obstacles configurations. The experiments are conducted in | volume of water. To assess the impact of obstacle | configurations on flow behaviour, two obstacle sizes are | Fast floods resulting from the failure of | hydraulic structures can be characterized by 'dam-break

关键词： Dam-break flow | flow visualization and imaging | laboratory study | particle image velocimetry (PIV) | RANS model | urban flood | SHALLOW-WATER EQUATIONS | CLIMATE-CHANGE | URBAN | RISK...

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国家科技图书文献中心

摘要： its burden and to face obstacles* in its* | stroke services and related obstacles* in 17 African* | obstacles in the implementation of telestroke services | regressing in a few. Managing obstacles* that are raised by* | BackgroundAs one of the most common non

摘要： demonstrate that helical tapered obstacles* are helpful in* | effects of helical tapering barriers* on turbulent air* | due to the installation of helical barriers, which | In this computational investigation, the | flow through a horizontal circular tube with a

摘要： faces several obstacles. Understanding these obstacles | some of the most critical obstacles* that hinder the* | In a climate change context, indigenous and | local knowledge includes the use of traditional | practices, crop varieties, and land management techniques

摘要： dynamic obstacles. To address the poor generalization | in complex scenarios with dynamic obstacles, this | with dynamic obstacles* are validated* | In logistics factories, Automated Guided | Vehicles (AGVs) are often tasked with transporting

摘要： tripping obstacles. The present study aimed to determine | how different types of tripping obstacles* affect* | the two obstacles. Results showed that the board | obstacle and the other by a board-like obstacle. Balance | -like obstacle* led to longer step-off time, shorter*

摘要： impenetrable obstacles, each with different boundary | reconstruct obstacles* and give some numerical examples in* | scatterer, comprising a penetrable obstacle* and two* | We consider the direct and inverse time | -harmonic acoustic scattering problem for a mixed

摘要： investigate the epistemological obstacles* they experienced* | experiences of related epistemological obstacles. These | epistemological obstacles* experienced during interactions with* | Understanding the cognitive challenges | students experience in proofs-based mathematics courses

摘要：Financial, knowledge and market obstacles* can* | financial obstacles* to invest in R&I. Building on the* | knowledge and market obstacles. Despite this, however | knowledge obstacles. Moreover, it increases the importance | that firms attach to their market obstacles. This

摘要： obstacles configurations. The experiments are conducted in | volume of water. To assess the impact of obstacle | configurations on flow behaviour, two obstacle* sizes are* | Fast floods resulting from the failure of | hydraulic structures can be characterized by 'dam-break