scholarly journals Simulation-Based Operational Evaluation of a Single-Berth Multipurpose Seaport with Wharf Space Restriction

2021 ◽  
Vol 9 (8) ◽  
pp. 883
Author(s):  
Wei Xie ◽  
Siyi Zhuge ◽  
Yongzhong Wu ◽  
Dan Xiao
Keyword(s):  
Simulation Model ◽  
Investment Decisions ◽  
Productivity Improvement ◽  
Analysis And Evaluation ◽  
Operational Analysis ◽  
Capacity Evaluation ◽  
Simulation Based ◽  
Handling Methods ◽  
Handling Method ◽  
Space Restriction

Overcapacity of seaport infrastructure has been a common issue in many countries in recent years. Cautious investment decisions shall be made on the basis of realistic capacity evaluation and productivity improvement of existing ports. However, operational analysis and evaluation of a seaport is not always easy, especially for multipurpose terminals which are commonly seen in developing countries. These small-scaled multipurpose seaports handle different cargo types with multiple interrelated processes and varying handling methods and process times. This paper studies a single-berth multipurpose seaport with wharf space restriction in Indonesia and shows how the simulation model can be essential and significantly helpful in the evaluation of the port’s productivity and realistic capacity. Furthermore, a new handling method is proposed and evaluated by the simulation model. The simulation approach and related results help the port operator in making decisions regarding port improvement and future expansion investments.

Evaluating the Impacts of Sludge Incineration Using a Risk Based Approach

1990 ◽  
Vol 22 (12) ◽  
pp. 75-83
Author(s):  
Ann E. Farrell ◽  
Bert Michalczyk ◽  
Anaya Nance
Keyword(s):  
Treatment Plant ◽  
Cost Effective ◽  
Chemical Stabilization ◽  
Sludge Incineration ◽  
Capacity Evaluation ◽  
Handling Methods ◽  
Handling Method ◽  
Sanitary District

The viability of continued sludge incineration at Central Contra Costa Sanitary District wastewater treatment plant is presented as a case study. A risk based approach was utilized to assess the long-term feasibility and cost of continued incineration compared to other available sludge handling methods. Three major tasks were conducted as part of the study: an incinerator capacity evaluation; a risk assessment; and, an evaluation of solids handling technologies. The study focused on toxics most often encountered in sewage incinerator emissions, including arsenic, beryllium, cadmium, chromium, lead, mercury, nickel, poly-chlorinated dibenzo-p-dioxins, and polychlorinated dibenzo-p-furans. The results of the study indicate that continued incineration of sludge is viable for Central Contra Costa Sanitary District, and that the most cost effective solids handling method is incineration using two duty units with backup provided by chemical stabilization. To confirm costs and design criteria, pilot testing of two potential back-up methods is currently being conducted.These methods are chemical stabilization and indirect drying.

scholarly journals AN OVERVIEW OF SUPPLY CHAIN EVALUATION SYSTEM

2014 ◽  
Vol 17 (3) ◽  
pp. 88-100
Author(s):  
Thanh Van Vo ◽  
Trung Quoc Pham
Keyword(s):  
Supply Chain ◽  
Evaluation System ◽  
Design Management ◽  
Analysis And Evaluation ◽  
Management Evaluation ◽  
Capacity Evaluation ◽  
Practical Research ◽  
Evaluation Models ◽  
Two Factors ◽  
Customer Services

Design, analysis and evaluation of supply chain play an important role in the operation and establishment of of business competiveness. The design and analysis of supply chain generally solves issues concerning costs and customer services. Indicators of the two factors are often used in supply chain capacity evaluation models. In addition, there have been many supply chain evaluation models using indicators ranging from strategy to operation in the last decades. This study aims to summarize some supply chain capacity evaluation models and emphasize the importance of supply chain evaluation for the improvement of operation in the present competitive market, thereby creating a foundation for practical research on design, management, evaluation and operation of supply chains.

Level Mobile Shot Blasting Machine Shot Blasting Wheel in the Dynamic Simulation Based on ADAMS

2011 ◽  
Vol 148-149 ◽  
pp. 837-841
Author(s):  
Dan Zhang ◽  
Yuan Lin Liu ◽  
Hong Tao Li
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Mechanical Model ◽  
Shot Blasting ◽  
Air Resistance ◽  
Simulation Based ◽  
Dynamic Simulation Model ◽  
External Forces ◽  
Machine Analysis ◽  
Speed Of Analysis

The level of mobile shot blasting machine analysis, a mechanical model of the projectile with the blade and shot rounds of dynamic simulation model, the model by imposing constraints and external forces, analysis of air resistance, friction, blade length and projectile diameter of throw playing speed. Played by the speed of analysis can throw further analysis of various parameters on the effect of throwing fight.

USE OF THE SIMULATION OF INVESTIGATION TRANSPORT PROCESSES

2015 ◽  
Vol 2 (2) ◽  
pp. 813-819
Author(s):  
Нургалиев ◽  
E. Nurgaliev ◽  
Кесова ◽  
Yu. Kesova
Keyword(s):  
Simulation Model ◽  
Transport Processes ◽  
Transport Network ◽  
Real System ◽  
Transport Systems ◽  
Qualitative And Quantitative ◽  
Simulation Based ◽  
Quantitative Characteristics ◽  
Graphic Work ◽  
Qualitative And Quantitative Characteristics

Simulation - a method of research, where the studied system is replaced with a model that describes the real system. The simulation-based transport systems is modeling of random phenomena. As a result of the simulation model are obtained qualitative and quantitative characteristics of the graphic work of the blocks describing the various elements of the transport network

Regional carrying capacity evaluation and simulation based on GIS and cellular automata model

2006 ◽  
Author(s):  
Min Zeng ◽  
Jianping Chen ◽  
Lijuan Wu ◽  
Chen Chen ◽  
Youjun Chen ◽  
...  
Keyword(s):  
Cellular Automata ◽  
Carrying Capacity ◽  
Cellular Automata Model ◽  
Capacity Evaluation ◽  
Simulation Based

Obtaining single cells: analysis and evaluation of an experimental protocol by means of a simulation model

2005 ◽  
Vol 100 (1-3) ◽  
pp. 55-66 ◽  
Author(s):  
A STANDAERT ◽  
A GEERAERD ◽  
K BERNAERTS ◽  
K FRANCOIS ◽  
F DEVLIEGHERE ◽  
...  
Keyword(s):  
Simulation Model ◽  
Single Cells ◽  
Experimental Protocol ◽  
Analysis And Evaluation

scholarly journals Assessment of Knowledge of Radiographic Students about Radiation Protection Devices, Their Use and Handling

2021 ◽  
Vol 8 (6) ◽  
pp. 277-282
Author(s):  
Lakshmi Yadav ◽  
Navreet Boora ◽  
Raushan Kumar
Keyword(s):  
Radiation Protection ◽  
Imaging Techniques ◽  
Training Session ◽  
Radiology Department ◽  
Care Community ◽  
Teaching Standards ◽  
Validated Questionnaire ◽  
Simulation Based ◽  
Protection Devices ◽  
Handling Methods

Aim: The aim of this study to assess the knowledge of radiographic students about radiation protection devices, their use and handling. Methods: A prospective, questionnaire-based study was carried out in Department of Radiological and Imaging Techniques. A validated questionnaire was circulated among undergraduate and postgraduate Radiographic students. Result: Out of 169 participants was 150(88.7%) of undergraduate, postgraduate and diploma students of radiological and imaging techniques filled questionnaire in this study. To assess knowledge about radiation protection devices, their use and handling, which they gain during theory classes and from hospital posting. There were 58(38.7%) were female and 92 (61.3%) were male. Conclusion: Study concluded that there should be proper theory classes for the conduction of knowledge about radiation protection devices, their use and handling in radiology department. Training session and teaching standards should be taken in account for not only the number of hours required to obtain the knowledge with the equipment required to run the classes in the simulation-based learning environment. This questionnaire-based survey demonstrates that up-to-date radiation protection devices, their use and handling skill in among radiography students of college of paramedical sciences were not sufficient, this should be improved by the well-designed training and theoretical sessions. From this study, we suggest that all members of the health care community should attend the webinars, guest lectures and training sessions about knowledge of radiation protection devices, their use and handling in radiology department. Keywords: Radiation protection devices, Lead equivalent, X-ray, Radiology department.

scholarly journals Productivity Analysis of Micro-Trenching Using Simphony Simulation Modeling

2020 ◽  
Vol 6 (11) ◽  
pp. 2131-2142
Author(s):  
Hediyeh Vaseli ◽  
Leila Hashemian ◽  
Alireza Bayat
Keyword(s):  
Simulation Model ◽  
Weather Condition ◽  
Weather Conditions ◽  
Cold Weather ◽  
Productivity Analysis ◽  
Residential Areas ◽  
Productivity Improvement ◽  
Project Duration ◽  
Installation Depth ◽  
The Impact

Micro-trenching is an innovative method for installing fiber optic cable in residential areas and business districts which minimizes surface scarring and potential negative social and environmental impacts. This method has three major steps including cutting a narrow trench in the pavement, cable installation and trench backfilling. This paper discusses a Simphony simulation model of the micro-trenching procedure and analyzes its productivity. Brief descriptions of the micro-trenching method and two field installations used to validate the model are included. A simulation model was developed for two different installation depths of 7.6 and 23 cm using two different methods. To provide an estimation of project duration, the impact of weather conditions on micro-trenching productivity was also considered. The developed model can be used for what if scenarios and for predicting the outcomes, which may be useful for studying the procedure and verifying if any productivity improvement can be achieved. The results indicate that the influence of installation depth is more significant than the impact of weather conditions. Reducing installation depth from 23 cm to 7.6 could improve productivity up to 50% while cold weather condition can reduce productivity by 18.8%. The simulation model demonstrates that the productivity can be improved up to 16% by overlapping two steps during the installation process: starting the cleaning procedure when a portion of cutting is completed. Doi: 10.28991/cej-2020-03091607 Full Text: PDF

Stochastic Model Bias Correction of Dynamic System Responses for Simulation-Based Reliability Analysis

2015 ◽  
Author(s):  
Zhimin Xi ◽  
Hao Pan ◽  
Ren-Jye Yang
Keyword(s):  
Stochastic Model ◽  
Dynamic System ◽  
Simulation Model ◽  
Reliability Analysis ◽  
Dynamic Model ◽  
Bias Correction ◽  
Simulation Models ◽  
Model Bias ◽  
Thermal Problem ◽  
Simulation Based

Reliability analysis based on the simulation model could be wrong if the simulation model were not validated. Various model bias correction approaches have been developed to improve the model credibility by adding the identified model bias to the baseline simulation model. However, little research has been conducted for simulation models with dynamic system responses. This paper presents such a framework for model bias correction of dynamic system responses for reliability analysis by addressing three technical components including: i) a validation metric for dynamic system responses, ii) an effective approach for dynamic model bias calibration and approximation, and iii) reliability analysis considering the dynamic model bias. Two case studies including a thermal problem and a corroded beam problem are employed to demonstrate the proposed approaches for simulation-based reliability analysis.

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