Magneto-convective effect on tritium transport at breeder unit level for the WCLL breeding blanket of DEMO

Abstract. The current paper presents the development and validation of a unit-level Organizational Citizenship Behavior (OCB) scale based on the Referent-Shift Consensus Model (RSCM). In Study 1, with 124 individuals measured twice, both an Exploratory Factor Analysis (EFA) and a Confirmatory Factor Analysis (CFA) established and confirmed a five-factor solution (helping behavior, sportsmanship, loyalty, civic virtue, and conscientiousness). Test–retest reliabilities at a 2-month interval were high (between .59 and .79 for the subscales, .83 for the total scale). In Study 2, unit-level OCB was analyzed in a sample of 129 work teams. Both Interrater Reliability (IRR) measures and Interrater Agreement (IRA) values provided support for RSCM requirements. Finally, unit-level OCB was associated with group task interdependence and was more predictable (by job satisfaction and integrity of the supervisor) than individual-level OCB in previous research.

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Sae: A Stata Package For Unit Level Small Area Estimation

10.1596/1813-9450-8630 ◽

2018 ◽

Author(s):

Minh Cong Nguyen ◽

Paul Corral ◽

Joao Pedro Azevedo ◽

Qinghua Zhao

Keyword(s):

Small Area ◽

Small Area Estimation ◽

Area Estimation ◽

Unit Level

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Administrasi Kurikulum

10.31227/osf.io/h4b7c ◽

2019 ◽

Author(s):

Fadia Kalma Lailani

Keyword(s):

Curriculum Development ◽

Teaching And Learning ◽

School Management ◽

Educational Goals ◽

Curriculum Management ◽

Level Of Education ◽

Unit Level ◽

Entire Process ◽

School Committees ◽

Quality School

abstrak— The purpose of making this article is to help prepare quality school management, especially with regard to curriculum management which will be implemented at the level of the education unit at the school, both done by teachers, school committees, principals, and parties related to curriculum development at the unit level of education. Hopefully this article can provide information in order to create quality school management which of course must be based on quality curriculum management as well. curriculum administration is the entire process of activities planned deliberately to the situation of teaching and learning effectively and efficiently in order to help the achievement of educational goals that have been set.

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Rationalization and Internal Control: Improving Marine Corps Unit-Level Internal Management Controls for the Government-Wide Commercial Purchase Card Program

10.21236/ada423381 ◽

2003 ◽

Author(s):

Lewis E. Wood

Keyword(s):

Internal Control ◽

Marine Corps ◽

Unit Level ◽

Internal Management ◽

Management Controls ◽

The Government

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Development of a Component-Level Hydrogen Transport Model with OpenFOAM and Application to Tritium Transport Inside a DEMO HCPB Breeder

Applied Sciences ◽

10.3390/app11083481 ◽

2021 ◽

Vol 11 (8) ◽

pp. 3481

Author(s):

Volker Pasler ◽

Frederik Arbeiter ◽

Christine Klein ◽

Dmitry Klimenko ◽

Georg Schlindwein ◽

...

Keyword(s):

Transport Model ◽

Tritium Concentration ◽

Minor Role ◽

Specific Rate ◽

Component Level ◽

Diffusion Limited ◽

Purge Gas ◽

Choice Of Species ◽

The Impact ◽

Tritium Transport

This work continues the development of a numerical model to simulate transient tritium transport on the breeder zone (BZ) level for the EU helium-cooled pebble bed (HCPB) concept for DEMO. The basis of the model is the open-source field operation and manipulation framework, OpenFOAM. The key output quantities of the model are the tritium concentration in the purge gas and in the coolant and the tritium inventory inside the BZ structure. New model features are briefly summarized. As a first relevant application a simulation of tritium transport for a single pin out of the KIT HCPB design for DEMO is presented. A variety of scenarios investigates the impact of the permeation regime (diffusion-limited vs. surface-limited), of an additional hydrogen content of 300 Pa H2 in the purge gas, of the released species (HT vs. T2), and of the choice of species-specific rate constants (recombination constant of HT set twice as for H2 and T2). The results indicate that the released species plays a minor role for permeation. Both permeation and inventory show a considerable dependence on a possible hydrogen addition in the purge gas. An enhanced HT recombination constant reduces steel T inventories and, in the diffusion-limited case, also permeation significantly. Scenarios with 80 bar vs. 2 bar purge gas pressure indicate that purge gas volumetric flow is decisive for permeation.

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