Research Output
Articles
Publication Date: 2025
Optimization Methods and Software (10294937)
We develop an algorithm based on the idea of the bundle trust-region method to solve nonsmooth nonconvex constrained optimization problems. The resulting algorithm inherits some attractive features from both bundle and trust-region methods. Moreover, it allows effective control of the size of trust-region subproblems via the compression and aggregation techniques of bundle methods. On the other hand, the trust-region strategy is used to manage the search region and accept a candidate point as a new successful iterate. Global convergence of the developed algorithm is studied under some mild assumptions and its encouraging preliminary computational results are reported. © 2025 Informa UK Limited, trading as Taylor & Francis Group.
Publication Date: 2025
Optimization and Engineering (13894420)
In this study, a networked system made up of an operator and a finite number of users is taken into consideration. Our goal is to propose two methods for finding the optimal solution to the problem of minimizing the sum of non-smooth, non-convex objective functions of the operator and all users, subject to the constraint that the solution must lie in the intersection of the fixed point sets of the operator and all users. The first method we present is a parallel sub-gradient approach, which assumes that each user can keep their connection with other users in the network. The second method involves an acceleration technique that divides the network into a finite number of subnetworks, each containing a subset of users. When users in each subnet can interact with one another, they can employ an incremental optimization technique that takes into account the information given by their neighbors. This gives us the opportunity to study the distributed broadcast algorithm. From this, we can develop an algorithm that combines the concepts of incremental optimization and broad optimization. Furthermore, we study the convergence analysis under acceptable assumptions. We also provide instances of applicable problems that fulfill the convergence assumptions. Finally, numerical examples have been given to demonstrate the efficacy of the described methods. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2025.
Dehghan manshadi, Z.,
Sarafraz M.R.,
Bahrami, F.,
Nobakhtian, S.,
Raisi, S.A.R.,
Marandi, S.M. Publication Date: 2025
BMC Psychology (20507283)(1)pp. 175-184
Childhood maltreatment has profound and long-lasting effects, not only on the victims but also on their offspring when they become parents later in life. This study aimed to investigate the role of two key mediating factors—parental reflective functioning and perceived social support—in the relationship between maternal childhood maltreatment and children's emotional and behavioral problems. We conducted a cross-sectional study in Iran from March to June 2024. Mothers of preschool children (4–6 years old) with emotional or behavioral problems (N = 222; Mean age = 34.06 ± 4.2 years) completed measures of Childhood maltreatment Questionnaire (CTQ), Parental Reflective Functioning Questionnaire (PRFQ), Perceived Social Support (PSS), and children's emotional and behavioral outcomes, as assessed using the Strengths and Difficulties Questionnaire (SDQ). The SDQ includes subscales for emotional symptoms, conduct problems, hyperactivity/inattention, peer relationship problems, and prosocial behavior. Structural equation modeling (SEM) was used to assess the conceptual model. The results revealed that childhood maltreatment had no direct association with children’s emotional and behavioral problems. However, childhood maltreatment was positively and indirectly related to children’s emotional and behavioral problems (including emotional symptoms, conduct problems, hyperactivity/inattention, and peer relationship problems) and negatively and indirectly related to children’s prosocial behavior. These associations were mediated through pre-mentalizing modes of parental reflective functioning. Additionally, the analysis revealed no significant mediating role of perceived social support in this relationship. The findings highlight the significant indirect association between childhood maltreatment and various aspects of children’s emotional and behavioral problems through pre-mentalizing modes of parental reflective functioning. This underscores the critical role of enhancing parental reflective abilities to mitigate the adverse outcomes of childhood maltreatment on children’s emotional regulation and behavioral adjustment. © The Author(s) 2025.; • This study addresses a significant gap in understanding the nuanced relationship between maternal childhood maltreatment and children's emotional and behavioral problems, focusing on mediating factors such as parental reflective functioning and perceived social support. • Maternal childhood maltreatment is found to have an indirect but significant association with various aspects of children's emotional and behavioral problems, including emotional symptoms, conduct problems, hyperactivity/inattention, peer relationship difficulties, and prosocial behavior, through pre-mentalizing modes of parental reflective functioning. This indirect pathway underscores the complexity of familial influences on child development. • The indirect association of maternal childhood maltreatment with children's emotional and behavioral problems through the sequential pathway of perceived social support and parental reflective functioning was not significant. • The findings emphasize the critical importance of interventions aimed at enhancing parental reflective abilities. These interventions have the potential to mitigate the adverse associations of maternal childhood maltreatment with children's emotional regulation and behavioral adjustment, offering valuable insights for both clinical practices and policy initiatives. © The Author(s) 2025.
