Technical Note: Light Frame Wood Truss Roof Collapse in Mississippi, A Case Study

2021 ◽  
Vol 53 (3) ◽  
pp. 228-236
Author(s):  
Rubin Shmulsky ◽  
Lon A. Yeary ◽  
Joseph Marion Allen
Keyword(s):  
Technical Note ◽  
Roof Collapse

Water in the Time of Drought II: Lessons from Droughts around the World

2021 ◽  
Author(s):  
Raphaëlle Ortiz ◽  
Anamaría Núñez ◽  
Corinne Cathala ◽  
Ana R. Rios ◽  
Mauro Nalesso
Keyword(s):  
Best Practices ◽  
Technical Note ◽  
Lessons Learned ◽  
Institutional Frameworks ◽  
The World ◽  
Relevant Case ◽  
Management Policies ◽  
Successes And Challenges

This technical note is an update to the previous "Water in the Time of Drought: Lessons from Five Droughts Around the World", published in 2018. It explores drought situations and policies in Spain (including the Canary Islands), Chile, Mexico, the dry corridor between Honduras, Guatemala, and El Salvador, Brazil, and South Africa. Each of these countries has recently dealt with droughts and/or developed long-term solutions to manage them. HydroBID, a tool developed by the IDB, will be presented through relevant case studies. After defining drought experiences and institutional frameworks in each country, the brief will explore the successes and challenges of national drought and water management policies. Best practices and lessons learned will be extracted from each case study to help policymakers better prepare for droughts.

Technical Note. Mapping seagrass beds using IKONOS satellite image and side scan sonar measurements: a Japanese case study

2008 ◽  
Vol 29 (1) ◽  
pp. 281-291 ◽  
Author(s):  
T. Sagawa ◽  
A. Mikami ◽  
T. Komatsu ◽  
N. Kosaka ◽  
A. Kosako ◽  
...  
Keyword(s):  
Satellite Image ◽  
Technical Note ◽  
Seagrass Beds ◽  
Side Scan Sonar ◽  
Japanese Case

Un système de prévision appliqué aux crues subites de la rivière Châteauguay

2000 ◽  
Vol 27 (6) ◽  
pp. 1311-1315 ◽  
Author(s):  
Daniel Lavallée ◽  
Luc Roy ◽  
Claude Marche
Keyword(s):  
Hydrological Model ◽  
Technical Note ◽  
Civil Protection ◽  
Protection Measures ◽  
Flood Plains ◽  
Flood Warning ◽  
Temporary Protection ◽  
Forecasting System ◽  
Result Analysis

Increasing occupation of flood plains augments the number of residents affected with flashfloods. Temporary protection measures can be considered as long as the authorities are warned soon enough before the occurrence of a flood. A simple forecasting system is presented in this technical note. It is based on the coupling of one hydrological model with one hydraulic model, and on a data acquisition and result analysis module. A case study is also presented.Key words: flashfloods, civil protection, flood, warning.[Journal translation]

scholarly journals Laparoscopic and cystoscopic-assisted suprapubic catheter insertion: A case study and technical note

2015 ◽  
Vol 13 (4) ◽  
pp. 291-294 ◽  
Author(s):  
Mohamed Tourky ◽  
Ross Knight ◽  
Ramesh Rajagopal
Keyword(s):  
Technical Note ◽  
Catheter Insertion ◽  
Suprapubic Catheter

Flat-plate roof collapse of shallow caverns and protective measures: a case study of Longyou ancient siltstone caverns

2014 ◽  
Vol 76 (1) ◽  
pp. 191-213 ◽  
Author(s):  
Zhongjian Zhang ◽  
Lihui Li ◽  
Wenjie Xu ◽  
Yan Fu ◽  
Jun Feng
Keyword(s):  
Flat Plate ◽  
Protective Measures ◽  
Roof Collapse

scholarly journals Roll waves and their generation criteria

RBRH ◽  
2021 ◽  
Vol 26 ◽  
Author(s):  
Fabiana de Oliveira Ferreira ◽  
Geraldo de Freitas Maciel ◽  
João Batista Pereira
Keyword(s):  
Free Surface ◽  
Froude Number ◽  
Technical Note ◽  
Flowing Fluid ◽  
Roll Waves ◽  
Simulation Based ◽  
Fluent Software ◽  
New Generation ◽  
Averaged Model

ABSTRACT Pulsating waves (also known as roll waves) might occur on the free surface of extreme events like mud and debris flows, among others, usually intensifying the caused damage. This technical note aims to inform about the roll wave phenomenon developing in a free-surface laminar flow, and analyze its generation criteria, centered on the concepts of Froude number and disturbance frequency. The complete linear stability analysis of the new depth-averaged model was proven a useful theoretical tool in determining new generation criteria for roll waves developing in non-Newtonian fluids. The results showed that the roll wave generation depends on two criteria: the first is associated to the minimum Froude number, and the second is related to the cut-off frequency. In addition, we have confirmed that the new generation criteria can be verified via numerical simulation based on a second model with full equations (Fluent software). Globally, the emergence of roll waves is favored by the non-Newtonian properties of the flowing fluid and the fact that the cut-off frequency decreases along with the minimum Froude number. Lastly, both generation criteria were tested in order to examine a case study involving the occurrence of roll waves in a watershed.

scholarly journals Technical Note: Evaluation of the Skill in Monthly-to-Seasonal Soil Moisture Forecasting Based on SMAP Satellite Observations over the Southeast US

2019 ◽  
Author(s):  
Amirhossein Mazrooei ◽  
Venkat Lakshmi ◽  
Keyword(s):  
Soil Moisture ◽  
Land Surface ◽  
Weather Forecasting ◽  
Land Surface Model ◽  
Technical Note ◽  
Surface Model ◽  
Lead Times ◽  
Agricultural Planning ◽  
Southeast Us

Abstract. Providing accurate soil moisture (SM) conditions is a critical step in model initialization in weather forecasting, agricultural planning, and water resources management. This study develops monthly to seasonal (M2S) top layer SM forecasts by forcing 1–3 month ahead precipitation forecasts with Noah3.2 Land Surface Model. The SM forecasts are developed over the Southeast US (SEUS) and the SM forecasting skill is evaluated in comparison with the remotely sensed SM observations collected by Soil Moisture Active Passive (SMAP) satellite. Our results indicate potential in developing real-time SM forecasts. The retrospective 18-months (April 2015–September 2016) comparison between SM forecasts and the SMAP observations shows statistically significant correlations of 0.62, 0.57, and 0.58 over 1–3 month lead times respectively. As a case study, the evaluation of the issued forecasts based on the drought indexes monitored during the 2007 historical drought over the SEUS also indicate promising skill in monthly SM forecasting to support agricultural planning and water management for such natural hazards.

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