scholarly journals Distributed Leadership in Greek Public Schools: Limits and Conditions

2021 ◽  
pp. 93-102
Author(s):  
Dimitrios Gkoros
Keyword(s):  
Public Schools ◽  
School Leadership ◽  
Distributed Leadership ◽  
Power Distribution ◽  
Formal Education ◽  
School Organization ◽  
Power Distribution Network ◽  
Typical Structure ◽  
Educational Structure ◽  
Centralized System

Aim: To know whether the legal and institutional framework of the educational structure and operation, therefore of the school leadership as follows, is properly formed in Greek educational system and what the model of distributed leadership plays in the Greek educational context. Results: The organization of Greek formal education is based on the bureaucratic system. This centralized system of school organization leaves little room for action and initiative for principals and, consequently, for teachers. It is important that the personal vision of the principals is transmitted to the other members of the school, in possible sources of leadership, as a factor of change and inspiration for all, overcoming the abovementioned bureaucratic system but also for the system itself to change and become more diverse and flexible. Conclusion: In our opinion the detachment from the traditional, hierarchical forms of leadership and the transition to the division of responsibilities and the decentralization of power is imperative. Despite the typical structure of any education system, we believe that schools maintain some degree of autonomy that they can use to create a power distribution network, even informally.

‘Al Faza’a’ leadership: An implicit cultural barrier to distributed leadership in Jordanian public schools

2020 ◽  
pp. 174114322093258
Author(s):  
Reem Hashem
Keyword(s):  
Public Schools ◽  
Education Reform ◽  
School Leadership ◽  
Cultural Values ◽  
Distributed Leadership ◽  
Knowledge Economy ◽  
Social Practice ◽  
Leadership Practice ◽  
Factors Affecting ◽  
Cultural Barrier

In 2003, the Jordanian government launched an ‘education reform for knowledge economy’ leadership programme in Jordanian public schools. The programme transformed school leadership structures by advocating patterns of distributed leadership. However, growing evidence in cross-cultural research shows the influence of local culture on implementation of foreign reform programmes. This paper aims to examine a culture-bound leadership practice during the implementation of the education reform for knowledge economy programme and the tensions it holds to the intent of distributed leadership. This leadership practice was identified by Jordanian school principals who participated in qualitative research to examine factors affecting the implementation of the education reform for knowledge economy programme. The research employed a grounded theory methodology for data collection and analysis. Principals termed this leadership practice ‘al faza’a’ leadership which is anchored in al faza’a social practice of Jordanian tribes. Findings demonstrate that Jordanian tribal leadership styles are seen in Jordanian public schools. ‘Al faza’a’ hegemonic leadership practices in the Jordanian public schools signify the embodiment of the tribal social and cultural values of solidarity and kinship. These values can be incongruent with the core values underlying the education reform for knowledge economy’s advocated distributed leadership programme. This paper concludes that ‘al faza’a’ practice can represent an implicit leadership theory in Jordanian schools.

scholarly journals Grid Impact Assessment of Centralized and Decentralized Photovoltaic-Based Distribution Generation: A Case Study of Power Distribution Network with High Renewable Energy Penetration

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Tamer Khatib ◽  
Lama Sabri
Keyword(s):  
Impact Assessment ◽  
Power Distribution ◽  
Power Flow ◽  
Reactive Power ◽  
Power Losses ◽  
Pv System ◽  
Power Distribution Network ◽  
Pv Systems ◽  
Active And Reactive Power ◽  
Centralized System

This paper presents a grid impact assessment of a 5 MWp photovoltaic-based distribution unit on a 33 kV/23 MVA power distribution network with high penetration of renewable energy generation. The adapted network has an average load demand of 23 MVA, with a 3 MWp centralized PV system, and a number of decentralized PV systems of a capacity of 2 MWp. A grid impact assessment is done to an additional 5 MWp of PV generation as a centralized system as well as a number of decentralized systems. Power flow analysis is conducted to the grid considering different generation loading scenarios in order to study grid performance including active and reactive power flow, voltage profiles, distribution power transformers loading, transmission lines ampacity levels, and active and reactive power losses. On the other hand, the distribution of the decentralized systems is done optimally considering power distribution transformer loading and available area using the geographical information system. Finally, an economic analysis is done for both cases. Results showed that grid performance is better considering decentralized PV systems, whereas the active power losses are reduced by 13.43% and the reactive power losses are reduced by 14.48%. Moreover, the voltage of buses improved as compared to the centralized system. However, the decentralized PV systems were found to affect the power quality negatively more than the centralized system. As for the economic analysis, the decentralized PV system option is found slightly less profitable than the centralized system, whereas the simple payback period is 9 and 7 years, respectively. However, decentralized PV systems are recommended considering the technical implications of the centralized PV system.

Research on transformer vibration monitoring and diagnosis based on Internet of things

2021 ◽  
Vol 30 (1) ◽  
pp. 677-688
Author(s):  
Zhenzhuo Wang ◽  
Amit Sharma
Keyword(s):  
Internet Of Things ◽  
Power Distribution ◽  
Vibration Analysis ◽  
Vibration Monitoring ◽  
Power Transformers ◽  
Normal Operation ◽  
Analysis Method ◽  
Power Distribution Network ◽  
Monitoring And Diagnosis ◽  
Distribution Transformers

Abstract A recent advent has been seen in the usage of Internet of things (IoT) for autonomous devices for exchange of data. A large number of transformers are required to distribute the power over a wide area. To ensure the normal operation of transformer, live detection and fault diagnosis methods of power transformers are studied. This article presents an IoT-based approach for condition monitoring and controlling a large number of distribution transformers utilized in a power distribution network. In this article, the vibration analysis method is used to carry out the research. The results show that the accuracy of the improved diagnosis algorithm is 99.01, 100, and 100% for normal, aging, and fault transformers. The system designed in this article can effectively monitor the healthy operation of power transformers in remote and real-time. The safety, stability, and reliability of transformer operation are improved.

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