Design and Implementation of Smart Electricity with Monitor Integrating Forecasting and Status Estimation Functions and the Relevant Simulation Based on MATLAB

2014 ◽  
Vol 685 ◽  
pp. 350-357 ◽  
Author(s):  
Chao Dong Zhang ◽  
Shou Wen Ji ◽  
Shu Ping Dang
Keyword(s):  
Smart Grid ◽  
Mathematical Models ◽  
Demand Forecasting ◽  
The State ◽  
Power Network ◽  
Design And Implementation ◽  
Electricity Use ◽  
Mathematical Expressions ◽  
Simulation Based ◽  
Overall Performance

With the development and proliferation of smart grid and the relevant techniques, smart the electricity monitor is increasingly important for improving the overall performance of power network. With a number of new attributes, the smart electricity monitor is significantly different from these conventional electricity meters. For example, it actively provides the information for the management, reliability and maintainability purposes and acts as an irreplaceable component in the power network. In this paper, we mainly focus on the design and implementation of the smart grid which integrates a series of innovative functions, for example demand forecasting and status estimation. Specifically, the research backgrounds pertaining to this field will be briefly introduced and the state-or-the-art mathematical models related to both demand forecasting and status estimation will be constructed accordingly. Also, to investigate their feasibility and efficiency, a set of simulations based on MATLAB will be conducted and the simulated results will be presented. Finally, a complete and innovative prototype of smart electricity use monitor integrating forecasting and status estimation functions can be constructed, verified and analysed in depth by both of mathematical expressions and simulated results.

scholarly journals Interdependence of friction, wear, and noise: A review

Friction ◽  
2021 ◽  
Author(s):  
Kevin Lontin ◽  
Muhammad Khan
Keyword(s):  
Mathematical Models ◽  
Friction And Wear ◽  
Review Paper ◽  
Acoustic Noise ◽  
Friction Noise ◽  
Mathematical Expressions ◽  
Mechanical Contacts ◽  
Exact Relationship ◽  
Modelling Approach ◽  
Frictional Noise

AbstractPhenomena of friction, wear, and noise in mechanical contacts are particularly important in the field of tribomechanics but equally complex if one wants to represent their exact relationship with mathematical models. Efforts have been made to describe these phenomena with different approaches in past. These efforts have been compiled in different reviews but most of them treated friction, wear mechanics, and acoustic noise separately. However, an in-depth review that provides a critical analysis on their interdependencies is still missing. In this review paper, the interdependencies of friction, wear, and noise are analysed in the mechanical contacts at asperitical level. The origin of frictional noise, its dependencies on contact’s mechanical properties, and its performance under different wear conditions are critically reviewed. A discussion on the existing mathematical models of friction and wear is also provided in the last section that leads to uncover the gap in the existing literature. This review concludes that still a comprehensive analytical modelling approach is required to relate the interdependencies of friction, noise, and wear with mathematical expressions.

“The Criminal Actors Have a Social Base in Their Communities”: Gangs and Service Provision in Medellín, Colombia

2020 ◽  
pp. 1-21
Author(s):  
Caroline Doyle
Keyword(s):  
Social Control ◽  
Latin American ◽  
Service Provision ◽  
Qualitative Data ◽  
The State ◽  
Citizen Engagement ◽  
Design And Implementation

ABSTRACT In the last ten years, Medellín, Colombia has undergone significant socioeconomic improvements and a reduction in homicides. By drawing from qualitative data collected in Medellín, this article shows how, despite these improvements, residents in the marginalized neighborhoods maintain a perception that the state is unable or unwilling to provide them with services, such as employment and order or social control. Criminal gangs in these neighborhoods appear to rely on, and even exploit, the weakness of the state, as they are able to get citizens to perceive them as more reliable and legitimate than the state. This article argues that it is important for Latin American policymakers to promote citizen engagement in the design and implementation of policies to reduce current levels of violence.

scholarly journals Is This a Geolibrary? A Case of the Idaho Geospatial Data Center

2017 ◽  
Vol 19 (1) ◽  
pp. 4-10 ◽  
Author(s):  
Maria Anna Jankowska ◽  
Piotr Jankowski
Keyword(s):  
Digital Library ◽  
Future Development ◽  
Data Center ◽  
Data Centers ◽  
Public Domain ◽  
The State ◽  
Geospatial Data ◽  
Design And Implementation ◽  
Geographic Data

The article presents the Idaho Geospatial Data Center (IGDC), a digital library of public-domain geographic data for the state of Idaho. The design and implementation of IGDC are introduced as part of the larger context of a geolibrary model. The article presents methodology and tools used to build IGDC with the focus on a geolibrary map browser. The use of IGDC is evaluated from the perspective of accessa and demand for geographic data. Finally, the article offers recommendations for future development of geospatial data centers.

scholarly journals THE GOVERNMENTAL PERSPECTIVE IN THE URBAN MOBILITY PLAN-MAKING: THE CASE OF PERIPHERAL MUNICIPALITIES OF THE RIO DE JANEIRO METROPOLITAN AREA

2017 ◽  
Vol 3 (3) ◽  
pp. 117-135 ◽  
Author(s):  
Igor Godeiro de Oliveira Maranhão ◽  
Romulo Dante Orrico Filho ◽  
Enilson Medeiros dos Santos
Keyword(s):  
Metropolitan Area ◽  
Rio De Janeiro ◽  
The State ◽  
Urban Mobility ◽  
Sustainable Mobility ◽  
Master Plans ◽  
Design And Implementation ◽  
The Subject ◽  
Sustainable Urban Mobility ◽  
Plan Making

This paper analyzes the main challenges of the design and implementation of sustainable urban mobility plans (SUMP) after the law 12,587 in 2012, called the National Urban Mobility Policy (PNMU, in Portuguese). With the new law, municipalities within a population of more than 20,000 inhabitants, as well as those required by law to draw up master plans, are now compelled to elaborate mobility plans. However, only 171 of almost 3,400 municipalities required to prepare the plans were ready by 2015, the first deadline, later extended to 2018. This paper examines a set of municipalities in the Rio de Janeiro metropolitan area and tries to understand what are the main challenges to achieving the goal of sustainable mobility and the main differences between the European and the Brazilian governmental perspectives in the subject. A survey on the main barriers was applied in five local entities, and in the state and national levels entities. Four methods of hierarchization were applied. Among the factors that stand out most are the lack of resources to elaborate the plan, lack of integration between levels of government and problems with training and lack of personal in the responsible agencies of the municipalities.

scholarly journals ¿Cómo entrenar una habilidad compleja en cirugía?: Evaluación cualitativa de una estrategia basada en simulación

2021 ◽  
Vol 113 (1) ◽  
pp. 101-110
Author(s):  
Juan I. Cobián ◽  
◽  
Federico Ferrero ◽  
Martín P. Alonso ◽  
Alberto M. Fontana
Keyword(s):  
Work Teams ◽  
Technical Skills ◽  
Role Playing ◽  
Professional Activity ◽  
High Fidelity Simulation ◽  
Future Studies ◽  
Raising Awareness ◽  
Simulation Based ◽  
Overall Performance ◽  
The Impact

Background: Learning complex tasks in surgical requires the coordination and integration of technical and non-technical skills have an impact on the performance of work teams. Objective: The aim of this study is to report the results of a simulation-based educational strategy for training in complex surgical skills considering the participants’ perceptions. Material and methods: In 2019, 10 healthcare professionals participated in a 20-hour course divided in 6 hours of online training and 14 hours of onsite training. The strategy designed included the integration of case resolution activities, role-playing, practice with synthetic and virtual simulators and high-fidelity simulation. At the end of the course, a questionnaire was administered to explore participants’ perceptions on what they had learned and on their attitude changes. Results: Fifty percent of the participants perceived their skills and knowledge improved at the end of the course compared with their perception at the beginning of the course while 80% perceived the impact of the course on their professional activity was good or excellent. All the participants agreed with the need for improving non-technical skills. The experience was rated as positive or very positive by all participants, who were eager to repeat it. Conclusion: The participants’ perceptions of this educational program demonstrates that this method is highly accepted. Raising awareness of non-technical skills during the reflection stage suggests the need for changes in attitude and in self-perception of efficacy. We believe that simulation-based training offers the possibility of improving the overall performance of the surgical team. Future studies should focus on this goal.

scholarly journals Enhancement the stability of power system using optimal location of FACTS devices

2020 ◽  
Vol 18 (2) ◽  
pp. 648
Author(s):  
Ali Najim Abdullah ◽  
Ahmed Majeed Ghadhban ◽  
Hayder Salim Hameed ◽  
Husham Idan Hussein
Keyword(s):  
Power Network ◽  
Performance Factors ◽  
Facts Devices ◽  
Clearing Time ◽  
Thyristor Controlled Series Capacitor ◽  
Overall Performance ◽  
Set Up ◽  
The Stability ◽  
And Control ◽  
Better Than

<p><span>This paper proposes a steady-state of the Static Var Compensator (SVC) &amp; Thyristor Controlled Series Capacitor (TCSC) set up for enhancing the damping overall performance and growing the integral clearing time (CCT) of a power network. The indispensable clearing time is carried out through increasing the time fault interval until the gadget loses stability. Increasing the CCT can be contribute to reliability of the safety gadget, decrease the protection machine ranking and cost. In order to attain most enhancement of machine stability via optimizing location, sizing and control modes of SVC and TCSC. Models and methodology for putting and designing shunt FACT’s units SVC (injected reactive strength Q) and series FACT’s devices TCSC (chose capacitive region) are examined in a 6-bus system. Performance factors are described to show validation of SVC and TCSC on extraordinary conditions. It is proven that the SVC is better than TCSC. </span></p>

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