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This research examines the relationship between teachers' optimism/pessimism, primary and secondary control, and readiness for professional development in primary and secondary schools in Serbia. A total of 284 teachers participated in the study (82% female, M age =42.58, SD age =9.40), with an average of 17 years of teaching experience, and filled out the Teachers' Readiness for Professional Development Scale (RPD-Ts), the Optimism/Pessimism Scale (O/P), and the Primary and Secondary Control Scales (PSC). Optimism and Pessimism represent significant predictors of Primary (F(2,277) = 36.12, p

This paper proposes a data-driven approach strategy for enhancing the performance of grid forming converters (GFCs) in microgrids by leveraging the capabilities of dynamic mode decomposition (DMD) in combination with finite-control-set model predictive control (FCS-MPC). Conventional FCS-MPC, based on static models, have encountered numerous challenges in addressing parametric uncertainties in microgrid applications. To address this, the proposed strategy introduces an adaptive model based on DMD, integrated into the FCS-MPC framework to yield a more robust and reliable control technique in the presence of parametric uncertainties. The proposed data-driven approach utilizes the DMD-based model in combination with FCS-MPC to effectively share power through primary control and maintain voltage and frequency stability through secondary control, thus achieving improved reference tracking, load power variation robustness, and power quality. The effectiveness and efficiency of this proposed data-driven approach were validated through a comparative study with conventional static model FCS-MPC and double loop PI control, utilizing the MATLAB/Simulink platform. [ABSTRACT FROM AUTHOR]

This paper applies a method for reducing frequency fluctuations in power system by using Fuel Cell cogeneration system (FC cogeneration). Frequency fluctuation in power system is used as a feedback signal to a controller of FC cogeneration. In addition, the potential of power system for controlling frequency is estimated from the supply and demand record, and the timing, when power system requires the control from FC cogeneration, is determined. Thus, the effectiveness of the method is analyzed, considering the conditions in Kyushu area. The impact of the proposed method is high since the available capacity for the frequency control in power system is small in the evening. Even if 13.7% of the capacity for regulating frequency which is the pumped storage power generation on 22nd May 2019 is reduced, the FC cogeneration can regulate the frequency in power system.

The current study examines the relationship between the need for control, the Dark Triad personality traits, and hacking intent. We surveyed 523 individuals using a scenario design and investigated the role of both primary and secondary control as antecedents to Machiavellianism, psychopathy, and narcissism leading to both white-(i.e., ethical) and black-hat hacking interest. Our findings suggest that primary control is a significant antecedent to all three dark personality traits such that a higher intrinsic need for control is positively associated with Machiavellianism, narcissism, and psychopathy. Secondary control, however, has comparatively different effects on dark personality traits, demonstrating a negative effect only on psychopathy. Both Machiavellianism and psychopathy predicted both white- and black-hat hacking interests along with the perceived probability of apprehension. Overall, our findings suggest that primary control drives all three dark personality traits, yet only two of the three dark personality traits - Machiavellianism and psychopathy - are related to hacking interest. [ABSTRACT FROM AUTHOR]

Developmental transitions are experienced throughout the life course and necessitate adapting to consequential and unpredictable changes that can undermine health. Our six-month study (n = 239) explored whether selective secondary control striving (motivation-focused thinking) protects against the elevated levels of stress and depressive symptoms increasingly common to young adults navigating the challenging school-to-university transition. Path analyses supplemented with tests of moderated mediation revealed that, for young adults who face challenging obstacles to goal attainment, selective secondary control indirectly reduced long-term stress-related physical and depressive symptoms through selective primary control and previously unexamined measures of discrete emotions. Results advance the existing literature by demonstrating that (a) selective secondary control has health benefits for vulnerable young adults and (b) these benefits are largely a consequence of the process variables proposed in Heckhausen et al.'s (2010) theory.

Today, conventional power systems are evolving to smart grids, which encompass clusters of AC/DC microgrids, interfaced through power electronics converters. In such systems, increasing penetration of the power electronics-based distributed generations, energy storages, and modern loads provide a great opportunity for power quality control. In this paper, an overview of the power quality control of smart hybrid AC/DC microgrids is presented. Different types of power quality issues are studied first, with consideration of real-world hybrid microgrid examples, including data centers, electric railway systems, and electric vehicles charging stations. It shows that compared to traditional centralized power quality compensations, smart interfacing power converters from distributed generations, energy storages, and loads, and the AC and DC subgrids interfacing converters are promising candidates for power quality control. To realize the smart interfacing converters' power quality control, both primary converters control and secondary system coordination are required. In this paper, a thorough review of the primary control of interfacing converters to integrate the power quality compensation are presented, with a focus on the hybrid AC/DC microgrid harmonics compensation and unbalance compensation. For multiple interfacing converters, the secondary control with system-level coordination and optimization for harmonics and unbalance compensation (considering both unbalance and harmonics in single-phase and three-phase systems) are also presented. Challenges like low switching frequency of interfacing converters, parallel interfacing converters operation, and interfacing converters communications are discussed, and typical solutions for primary and secondary controls to deal with them are presented. The paper also includes rich case study results.

Although the association of self-regulation and well-being are well researched, few studies have addressed the dynamic mechanism of this relationship within married couples. This study examined the relationships of self-regulation and marital climate with the emotional well-being of both actors and partners among older Japanese couples. Through a mail survey, 498 older couples with husbands (aged in their 70s) and their wives (aged 60 or over) responded to a questionnaire comprising measures of selective optimization with compensation (SOC), tenacious goal pursuit and flexible goal adjustment, marital climate, and emotional well-being. The results of hierarchical linear modeling showed that positive interpretation was associated with not only their own lower depressive symptomatology and higher life satisfaction but also those of their partners. Furthermore, tenacious goal pursuit was beneficially associated with older adults' life satisfaction. Marital climate was positively related to emotional well-being and the association was larger among wives than among husbands. However, contrary to expectations, use of an optimization strategy was negatively linked to partners' life satisfaction, but not actors'. Besides confirming the apparent benefits of self-regulation for actors' well-being, self-regulation could be beneficially or detrimentally related to partners' well-being. To be happy in old age, it seems more important for individuals to care for their spouses and create a favorable marital climate than to pursue their own goals exclusively. There remains, however, a need to simultaneously examine the associations of both intrapersonal (self) and interpersonal (collective) regulatory processes with well-being. [ABSTRACT FROM AUTHOR]

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• Topology of a hybrid DC/AC microgrid in islanded mode of operation. • Application of fuel cells as back up for microgrids to increase reliability. • A novel method to control frequency and voltage based on active disturbance rejection control for both primary and secondary levels. • A coordinate energy management system based on battery state of charge deviations. This paper presents a control method based on active disturbance rejection control (ADRC) for both the primary and secondary control layers in a hybrid DC/AC microgrid (MG). A DC bus inside MG includes a wind turbine generator, photovoltaic panels, a fuel cell and battery energy storage. Maintaining the DC link voltage under various scenarios is made possible by applying an energy management system (EMS) based on the deviation in the state of charge of the battery and using a fuel cell as a backup. Through a voltage source inverter, the DC bus of the MG is connected to the AC side, which supplies AC loads. Using the proposed ADRC-based control strategy for the inverter, the voltage, frequency, and power flow within the MG would be effectively controlled. In order to demonstrate the effectiveness of the proposed method, a comparison between the ADRC and PI controller has also been implemented in different scenarios, proving the superiority of the suggested controller over classical approaches. [ABSTRACT FROM AUTHOR]

Although theory-driven control striving treatments may sustain motivation for individuals navigating life course transitions, their efficacy during these challenging junctures remains unexamined. In a pre-post randomized field study ( n = 316), a novel control striving treatment based on Heckhausen et al.'s (Psychol Rev 117:32-60, 2010) motivational theory of life-span development was administered to young adults making the landmark transition to university. For students who faced obstacles to goal attainment, the motivation-enhancing selective secondary control (SSC) striving treatment (vs. no-treatment) increased performance by 8 % in a two-semester course (74.85 % vs. 66.68 %). Consistent with theory, the SSC treatment-performance linkage was mediated by selective secondary and selective primary control in a hypothesized causal sequence. Findings advance the literature by showing control striving treatments can improve performance for some young adults in transition by promoting adaptive changes in theoretically-derived psychological process variables. [ABSTRACT FROM AUTHOR]