Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

123
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
123
Methods of Documentation VI: Case Management Model01:15

Methods of Documentation VI: Case Management Model

633
The case management model is a multidisciplinary approach that involves healthcare professionals from diverse disciplines, such as physicians, nurses, therapists, social workers, and pharmacists, working collaboratively to address the various needs of patients. Each healthcare professional brings unique expertise and perspectives, contributing to a more comprehensive understanding of the patient's condition and tailoring treatment plans accordingly.
For example, a patient with a chronic...
633
Design Example: Aggregate Gradation01:24

Design Example: Aggregate Gradation

151
The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
151
Workability of Concrete01:25

Workability of Concrete

164
The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise...
164
Measurement of Air Content in Concrete01:23

Measurement of Air Content in Concrete

287
Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
287
Multiple Comparison Tests01:13

Multiple Comparison Tests

4.0K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.0K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Plain language summary of a study testing a new drug (BI 764524) for diabetic macular ischemia.

Therapeutic advances in ophthalmology·2026
Same author

Characteristics and prognosis of skin cancer arising from burn scars: a systematic review.

Journal of plastic surgery and hand surgery·2026
Same author

Chronic inflammation is associated with increased anxiety in the Cancer Disparities Research Network.

Brain, behavior, & immunity - health·2026
Same author

Risk factors influencing construction supply chain management in Saudi Arabia.

Scientific reports·2026
Same author

Hyperspectral Imaging for the Classification and Analysis of Drusen in Age-Related Macular Degeneration.

Investigative ophthalmology & visual science·2026
Same author

Assessment of traffic related air pollution effects on indoor air quality in educational buildings.

Scientific reports·2025

相关实验视频

Updated: Sep 17, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
09:04

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

3.2K

在建筑项目中对值管理技术进行比较分析.

Mohamed Elsaid1, Khaled Nassar1, Fahad K Alqahtani2

  • 1Department of Construction Engineering, The American University in Cairo (AUC), New Cairo, Egypt.

Scientific reports
|July 2, 2025
PubMed
概括

积累的时间表和积累的持续时间技术在建筑项目预测中提供了不同的准确性. 获得的时间表在早期表现出色,而获得的持续时间更适合后期阶段,指导项目经理.

关键词:
建筑项目管理工程项目管理利持续时间方法.取时间表方法的取时间表方法.获得的价值管理.预测的准确性 预测的准确性计划价值方法的计划价值方法.

更多相关视频

Utilizing Electroencephalography Measurements for Comparison of Task-Specific Neural Efficiencies: Spatial Intelligence Tasks
06:57

Utilizing Electroencephalography Measurements for Comparison of Task-Specific Neural Efficiencies: Spatial Intelligence Tasks

Published on: August 9, 2016

11.5K
Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

2.1K

相关实验视频

Last Updated: Sep 17, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
09:04

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

3.2K
Utilizing Electroencephalography Measurements for Comparison of Task-Specific Neural Efficiencies: Spatial Intelligence Tasks
06:57

Utilizing Electroencephalography Measurements for Comparison of Task-Specific Neural Efficiencies: Spatial Intelligence Tasks

Published on: August 9, 2016

11.5K
Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

2.1K

科学领域:

  • 建筑项目管理项目管理
  • 获得价值管理 (EVM)
  • 在建筑领域进行预测分析.

背景情况:

  • 值技术对于建设项目监测和预测至关重要.
  • 关于这些技术在不同项目类型和阶段的比较准确性的研究有限.

研究的目的:

  • 评估预测准确度的取时间,取时间表,和计划价值的技术.
  • 根据项目的进展情况,确定最有效的预测方法.
  • 为在不同项目阶段选择合适的技术提供实际指导方针.

主要方法:

  • 分析了包括30个建筑项目的多样化数据集.
  • 取时间,取时间表和计划价值预测准确性的比较评估.
  • 评估各种项目持续时间百分比的预测性绩效.

主要成果:

  • 预计时间表在早期阶段预测项目完成时表现出卓越的准确性.
  • 在建筑项目的后期阶段,Earned Duration对于准确的预测更可靠.
  • 项目的类型和进展程度对预测方法的有效性有重大影响.

结论:

  • 值技术的选择应根据项目的阶段和类型进行量身定制.
  • 实施特定阶段预测方法可以提高项目结果的可预测性.
  • 这项研究为优化建筑项目管理和预测提供了实际指导.