Research for Hydrological Modelling System Technology Based on OpenMI

2011 ◽  
Vol 347-353 ◽  
pp. 1806-1815 ◽  
Author(s):  
Jian Ping Wang ◽  
Jian Chen ◽  
Chun Hong Li
Keyword(s):  
Physical Mechanism ◽  
Data Communication ◽  
Simulation Models ◽  
Feedback Mechanism ◽  
Hydrological Modelling ◽  
Hydrological Simulation ◽  
Efficient Integration ◽  
The Right ◽  
Cross Language ◽  
Modelling System

There has been a variety wide of hydrological simulation models, each model has its own characteristics. Hydrological modelling considers more and more detailed physical mechanism. And involved professional models also increased great significantly. Therefore, it is particularly important to establish an open unified model interface standards to make a data communication among different models and quickly formulate modelling systems suitable for the characteristics of target watershed. OpenMI emerged at the right moment to satisfy the requirements of above situations. The thesis bases on OpenMI to design hydrological modelling systems and inherits OpenMI framework of design, request/feedback mechanism and hierarchy facing to modules. This design can solve the assembly link problem of cross-language and multi-type models and make a beneficial attempt for hydrological modelling system efficient integration.

scholarly journals Lane Change Behavior on Freeways: An Online Survey Using Video Clips

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
V. L. Knoop ◽  
M. Keyvan-Ekbatani ◽  
M. de Baat ◽  
H. Taale ◽  
S. P. Hoogendoorn
Keyword(s):  
Online Survey ◽  
Simulation Models ◽  
Lane Changes ◽  
The Road ◽  
Video Clips ◽  
Road Capacity ◽  
Change Behavior ◽  
Instrumented Vehicle ◽  
The Moment ◽  
The Right

Freeways form an important part of the road network. Yet, driving behavior on freeways, in particular lane changes and the relation with the choice of speed, is not well understood. To overcome this, an online survey has been carried out. Drivers were shown video clips, and after each clip they had to indicate what they would do after the moment the video stopped. A total of 1258 Dutch respondents completed the survey. The results show that most people have a strategy to choose a speed first and stick to that, which is the first strategy. A second, less often chosen, strategy is to choose a desired lane and adapt the speed based on the chosen lane. A third strategy, slightly less frequently chosen, is that drivers have a desired speed, but contrary to the first strategy, they increase this speed when they are in a different lane overtaking another driver. A small fraction have neither a desired speed nor a desired lane. Of the respondents 80% use the right lane if possible, and 80% avoid overtaking at the right. Also 80% give way to merging traffic. The survey was validated by 25 survey respondents also driving an instrumented vehicle. The strategies in this drive were similar to those in the survey. The findings of this work can be implemented in traffic simulation models, e.g., to determine road capacity and constraints in geometric design.

scholarly journals An Integration of GIS and Simulation Models for a Cost Benefit Analysis of Irrigation Development

2016 ◽  
Vol 5 (4) ◽  
pp. 58
Author(s):  
Monika Ghimire ◽  
Art Stoecker ◽  
Tracy A. Boyer ◽  
Hiren Bhavsar ◽  
Jeffrey Vitale
Keyword(s):  
Water Conservation ◽  
Net Present Value ◽  
Cost Benefit Analysis ◽  
Irrigation System ◽  
Cost Benefit ◽  
Simulation Models ◽  
Irrigation Scheduling ◽  
Yield Response ◽  
Hydrological Simulation ◽  
Irrigation Development

<p class="sar-body"><span lang="EN-US">This study incorporates spatially explicit geographic information system and simulation models to develop an optimal irrigation system. The purpose of the optimized irrigation system was to save depleted ground water supplies. ArcGIS was used to calculate the area of potential irrigable soils, and EPANET (a hydrological simulation program) was used to calculate energy costs. Crop yield response functions were used to estimate the yield of cotton to the amount of irrigation and the accumulation of soil salinity over a 50-year period. Four irrigation designs (A, B, C, and D) were analyzed with different irrigation schedules.</span></p><p class="sar-body"><span lang="EN-US">Design A allowed all producers to irrigate simultaneously at 600 gallons per minute (gpm) or 2,271 liters per minute (lpm) while designs B and C divided the irrigable areas into two parts. Design D divided the areas into four parts to allow producers to irrigate one part at a time at 800 gpm (3,028 lpm). Irrigation scheduling not only lessened the water use and cost, but also amplified the profitability of the irrigation system. In design A, if all producers adopted 600 gpm (2,271 lpm) pivots and operated simultaneously, the cost of the 360,000 gpm (1363,000 lpm) pipeline would be prohibitive. In contrast, designs B, C, and D increased net benefits and lowered the breakeven price of cotton. The 50-year net present value for designs A, B, C, and D was profitable over 75, 70, 70, and 65 cents of cotton price per pound (454 g), respectively. Thus, this study endorses irrigation scheduling as a tool for efficient irrigation development and management, and increases water conservation.</span></p>

scholarly journals Analysis of Hydrological Simulation Models Using the Parameter Combinatorial Diagram

2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Mikel Goñi Garatea ◽  
Faustino N. Gimena Ramos ◽  
José Javier López Rodríguez
Keyword(s):  
Simulation Models ◽  
Hydrological Simulation

Improvement of the Process of Information Management in Maintenance - A Case Study

2015 ◽  
Vol 795 ◽  
pp. 99-106 ◽  
Author(s):  
Małgorzata Jasiulewicz-Kaczmarek ◽  
Mariusz Piechowski
Keyword(s):  
Information Management ◽  
Data Communication ◽  
Information Management System ◽  
Maintenance Management ◽  
Management Information ◽  
Comprehensive Information ◽  
Job Preparation ◽  
The Right ◽  
Different Sources

Effective planning, coordination, and scheduling of the maintenance function can be, and for many years was, accomplished without computer support. However, in these days of high technology and rapid, economical data communication, job preparation is accomplished far more efficiently with the support of a sound maintenance management information system. Fast, flexible access to reliable, current, and comprehensive information is vital if planners and managers are to control the maintenance function on the basis of knowledge rather than intuition. The paper presents a maintenance information management system designed for the needs of the healthcare company. Due to its universality, the system can read information from different sources, appropriately process, interpret and deliver it to the right people in the most appropriate manner.

Home Networking Technology Applied in Smart Home System

2013 ◽  
Vol 468 ◽  
pp. 141-144
Author(s):  
Su Hua Chen ◽  
Yong Guang Liu ◽  
Xu Fang
Keyword(s):  
Smart Home ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
High Reliability ◽  
Low Cost ◽  
Data Communication ◽  
Local Area ◽  
Area Network ◽  
Home Networking ◽  
The Right

Smart home system mainly consists of home networking, wireless local area network and external network, and with the advantages of low cost and high reliability, Zigbee wireless technology is the right choice for smart home system and the main part of home networking. The design of smart home system based on Zigbee is proposed, the Zigbeethe design process of the systemintelligent socket and data communication rule are elaborated. The system has been applied in smart community of Shaoxing Electric Power Bureau, which has good performances, high availability and reliability, better market prospects.

Climate Change effects on the River Discharge in Bulgaria

2020 ◽  
Author(s):  
Maria Mavrova-Guirguinova
Keyword(s):  
Climate Change ◽  
River Discharge ◽  
Simulation Models ◽  
Atmospheric Model ◽  
Future Climate Change ◽  
Local Version ◽  
Hydrological Simulation ◽  
Climate Change Effects ◽  
Global Atmospheric Model ◽  
The Impact

&lt;p&gt;The impact of future climate change under IPCC scenarios RCP4.5 and RCP8.5 on hydrological regimes in plain catchments up to 650 m high and in mountainous areas of Bulgaria is discussed. A hydrological simulation models (TUWmodel) were calibrated on recorded data and &amp;#8216;forced&amp;#8217; in the selected scenarios with precipitation and air temperature data from ALADIN 5.2, a local version of the French global atmospheric model ARPEGE, downscaled to a grid of 12 km. Simulations for the future periods 2013-2042, 2021-2050 and 2071-2100 are compared to the flows in the reference period 1976-2005.&lt;/p&gt;&lt;p&gt;Results indicate increased seasonality of flows, with noticeably drier summers and increase of river discharge in winter. In most of the cases the analysis of extreme events suggests significant increases in the frequency of both high&amp;#8208; and low&amp;#8208;flow events. The change in the extreme runoff with a large repetition period required for the design of flood protection structures and systems has been investigated in regions with different mechanisms for flood generation. With the push of RCP4.5 or RCP8.5 scenarios the significant increase in flood peaks is observed in most of the river basins. There is a general trend of decreasing runoff with a 95% probability of exceedance.&lt;/p&gt;

An introduction to the hydrological modelling system PREVAH and its pre- and post-processing-tools

2009 ◽  
Vol 24 (10) ◽  
pp. 1209-1222 ◽  
Author(s):  
D. Viviroli ◽  
M. Zappa ◽  
J. Gurtz ◽  
R. Weingartner
Keyword(s):  
Hydrological Modelling ◽  
Post Processing ◽  
Modelling System

A QoS-Assured and Mobility-Aware Routing Protocol for MANETs

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Seyedakbar Mostafavi ◽  
Vesal Hakami ◽  
Fahimeh Paydar
Keyword(s):  
Routing Protocol ◽  
Ad Hoc ◽  
Data Communication ◽  
Dynamic Network ◽  
Substantial Problem ◽  
Aodv Protocol ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
The Right

In Mobile Ad Hoc Networks (MANETs), lack of a fixed infrastructure, dynamic network topology, device mobility and data communication over wireless channels make the multi-hop routing a very challenging task. Due to mission-critical applications of MANET, dealing with these challenges through the design of a Quality of Service (QoS)-assured protocol is a substantial problem. Mobility in MANETs is commonly considered as a negative factor on quality, although we suggest that the right approach to mobility awareness using wisely selected metrics can lead to a robust and QoS-assured protocol. In this paper, we propose QMAR-AODV, a QoS-assured Mobility-Aware Routing protocol which is an optimized version of AODV protocol. We utilize a combination of stability and quality metrics including Mobility Ratio (MR(C,E)) between nodes in a route, Energy Efficiency and congestion load to choose the most stable and QoS-assured routes. Our simulation results show that QMAR-AODV protocol outperforms E2E-LREEMR and reduces route instability, end-to-end delay, data retransmissions and packet loss by 8.3% 10.9% 10.6% and 5.4 respectively, while increases data reception and network throughput by 5.1% and 4.8% respectively, compared to E2E-LREEMR routing protocol.

Intelligent Business Portals

2005 ◽  
pp. 1584-1590
Author(s):  
Xue Li
Keyword(s):  
Communication Networks ◽  
Information Exchange ◽  
Data Communication ◽  
Point Of View ◽  
Just In Time ◽  
The Internet ◽  
Information Carrier ◽  
Business Applications ◽  
Business Information ◽  
The Right

Business Portals are now widely used in e-commerce. Intuitively Portals can be regarded as an information gateway for exchanging business information over the Internet. The process of business information exchange requires the services of security and access control, interoperability over a variety of software of platforms and systems, interconnectivity for communications among different data communication networks, and scalability for information being sharable on different hardware devices. So, portals can also be regarded as an information carrier for delivering the right information to the right user, at the right time, to the right place, to make the right decisions. A portal is a packaged piece of information with the properties of self-servicing, personalization, and real-time delivery. From a business point of view, a portal is a mobile, self-explanatory, and just-in-time delivered piece of information. In e-commerce, business information is a set of time-stamped transactions that can be triggered by events in business activities. This article will illustrate and explain the architecture of intelligent business portals for Web-enabled business applications.

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