condition model
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2022 ◽  
Vol 355 ◽  
pp. 03071
Author(s):  
Gang Liu ◽  
Guang Yu ◽  
Qingyuan Xue

It is not easy to carry out the detailed variable condition calculation of steam turbine in engineering application. In this paper, a variable condition calculation model based on the internal and external characteristics of steam turbine is proposed, and a variable condition calculation model of constant power and constant flow is established. The model is applied to calculate 75% THA, 50%THA, typical industrial and heating extraction conditions of a subcritical 330 MW unit. The error is small compared with the design value, and the calculation accuracy meets the requirements. The results show that the model has high accuracy and can meet the requirements of engineering application.


2021 ◽  
Author(s):  
Hatice Simsek

Abstract In this study, two separate boundary condition models, as proposed by Beskok and Karniadakis [1] and Deissler [2], widely preferred for the second order boundary condition, were used. These two proposed boundary condition models were solved in the presence of a magnetic field moving normal to the plate surface in magneto-hydrodynamic (MHD) flow between micro-parallel plates with constant wall heat flux. The energy equation for the second-order temperature jump boundary condition, taking into account the momentum and viscous dissipation, as well as the corresponding Nusselt value were solved analytically in slip flow regime.The flow of an incompressible viscous flow between fixed micro-parallel plates with electrical conductivity is assumed to be constant, laminar, hydrodynamically and thermally developed. The closed form solutions for the temperature field and the fully developed Nusselt number are derived as a function of the Magnetic parameter (MHD), Knudsen number and Brinkman number and shown graphically and in a tabular form. The second order boundary condition model proposed by Deissler [2] predicts the Nusselt number to be at lower values when compared to the first order boundary condition model, and the second order boundary condition model proposed by Beskok and Karniadakis [1] predicts the Nusselt number to be at higher values than that of the first order boundary condition model. Moreover, increasing the magnetic field parameter M, led to higher Nusselt values in the slip flow model proposed by both Deissler [2] and Beskok and Karniadakis [1] compared to that when M = 0.


Author(s):  
Yi Liang ◽  
Shengfeng Dong ◽  
Liling Zhu ◽  
Danqing Zhao ◽  
Liming Shen

Objective: To investigate the connections among social support, stress, and depression. Design: Cross-sectional study. Setting: Guizhou Province in China. Population or Sample: An aggregate of 1,056 expectant ladies, had finished our questionnaire during pregnancy from March to April in 2020. Methods: The Edinburgh prenatal sadness scale, an independent pressure scale, and social support scale evaluated the downturn, stress, and social support of pregnant people during the pestilence. An auxiliary condition model was utilized to examine the immediate and aberrant connection between social support and prenatal misery. Main Outcome Measures: Incidence of depression. Results: During the pandemic time, 73.01% of pregnant ladies experienced prenatal misery. The model is suitable (chi-square = 11.96, CFI = 0.97, RMSEA = 0.07, RMR = 0.03). The auxiliary condition model indicated that the immediate pathway of social support to depression was critical (normalized pathway coefficient = - 0.34), and the aberrant pathway of stress to depression via social support was additionally huge (normalized pathway coefficient = 0.50). Stress partially intercedes the connection between social support and depression. Conclusion: Our discoveries posit that social support is related to an expanded danger of depression. Stress is decidedly corresponding to depression and assumes an interceding position between social support and stress. Thusly, directed mediation ought to be completed to lessen the depression of pregnant ladies and improve their psychological wellness status. Keywords: stress, depression, social support, structural equation model


Pragmatics ◽  
2020 ◽  
Author(s):  
Suwon Yoon

Abstract The goal of this study is to propose a pragmatic analysis of what we call Emotive Taste Terms (ETTs) in Korean, compared to English. What makes Korean taste adjectives special is its multidimensional meaning: In descriptive dimension, (i) the literal meaning concerns the taste; or (ii) it can be extended toward the situation, yielding a figurative meaning. In expressive dimension, (iii) the choice of particular derivation form reflects the speaker’s positive or negative emotional attitude; and (iv) another potential expressive meaning concerns honorification, thought it is not part of the meaning of ETTs. We thus propose that ETTs are a novel subcase of expressive elements, triggering Conventional Implicature. We show how the analysis of ETTs as a CI allows us to successfully derive subtle connotational differences amongst numerous variants. Finally, we show how the co-occurrence pattern of multiple expressives, ETTs and other expressives, within the sentence can be captured by Compatibility Condition Model.


2020 ◽  
Vol 27 (5) ◽  
Author(s):  
Marjo Hippi ◽  
Markku Kangas ◽  
Reija Ruuhela ◽  
Johanna Ruotsalainen ◽  
Sari Hartonen
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