Sadjad University of Technology

The author conducted this outreach to fellow writers to improve Mental Health and Motivation among fellow colleagues. The fellow writers consisted of fifteen lecturers at several universities, namely UIN Siber Syekh Nurjati Cirebon, Sultan Syarif Kasim State Islamic University Riau, Jayapura University of Science and Technology, Al-Mujaddid Sabak Islamic Institute, Satya Iyata Mandala University. The author hopes that lecturers who are currently carrying out their obligations under the Tri Dharma of Higher Education will remain motivated and mentally strong so that the Tri Dharma of higher education can be completed well, be beneficial, and can advance civilization. The success of fellow authors is also the success of the author personally.

Abstract Persian carpet has been known as one of the most prominent manifestations of Iranian art and culture over years, and has always had a unique position in the export basket of Iran. This art possesses a significant share of the value of non-oil exports. In this research, we have estimated the efficiency of Iran's carpet export market by using gravity model with a stochastic boundary and spatial regression approach from 1973 to 2023. Research findings show that Gross Domestic Product (GDP)of Iran and major importing countries, and a common border with Iranian carpet importer countries have a positive significant effect on exports. Moreover, a statistically significant negative relation was obtained between China's carpet export and that of Iran. In addition to the negative effects of competitor countries on exports, exchange rate fluctuations are considered as a serious threat to Iranian carpet exports. As a final result, Iran's carpet exports have a low level of efficiency, which can be attributed to global sanctions, the use of inferior materials, increasing rivals, plagiarism of Iranian designs, and the inconsistency of production with market demand JEL: F14, F19, F31, E58

In response to the global urgency for education systems to adapt to the demands of the 21st century, this study examines strategic efforts to enhance education quality through digitalization at Universitas Pendidikan Indonesia (UPI) Bumi Siliwangi’s partner schools. As nations strive to develop competitive and future-ready human capital, integrating digital technologies into school systems has become a critical pathway toward achieving World Class Education. This research investigates how digital tools—such as Learning Management Systems, multimedia platforms, and online communication applications—are utilized to transform learning processes, administrative operations, and stakeholder engagement. Key enablers identified include visionary leadership, ongoing professional development, infrastructure readiness, and collaborative support from UPI. However, challenges such as digital inequality, varying levels of digital literacy, and resistance to change highlight the need for systemic and sustainable strategies. The findings emphasize that advancing digitalization is not merely a technical upgrade but a cultural shift, requiring long-term commitment and policy alignment to ensure inclusive, high-quality education for all learners.

This investigation delves into the dynamic behavior of tapered circular curve beams (TCCBs) featuring honeycomb-shaped (HCS) cross-sections. The fundamental motion equations (FMEs) governing TCCB dynamics are established through the application of first-order shear deformation theory (FSDT) and Hamilton’s principle. To solve these FMEs and determine the natural frequencies (NFs), the generalized differential quadrature method (GDQM) is utilized. This simulation examines the effects of multiple factors, such as boundary conditions (BCs), the geometry of honeycomb cells, material characteristics, and thickness distribution patterns, on the NFs of TCCBs. The model incorporates smart composite materials (SCMs) in conjunction with conventional materials to evaluate their effects on dynamic performance. Findings reveal that an increase in honeycomb cell length leads to a reduction in stiffness, thereby decreasing NFs, while a greater honeycomb angle similarly results in lower NFs. Additionally, the incorporation of SCMs with different volumetric content of single-walled carbon nanotubes (SWCNTs) yields higher NFs compared to standard materials, underscoring the superior vibrational characteristics of SCMs. The study also examines the role of boundary springs on NFs, indicating that axial stiffness ([Formula: see text]) does not independently affect NFs but becomes relevant when combined with transverse ([Formula: see text]) and rotational stiffness ([Formula: see text]), resulting in an increase in NFs.

• Non-linear Finite Element (FE) analyses were conducted to explore the impact of different core hole configurations on PBRs. • The research aimed to reduce the core's yield strength while minimizing stiffness loss, facilitating the activation of the structural fuse mechanism and identifying the optimal PBRB. • Parametric study was performed in order to investigate the cyclic behavior of PBRBs. • The performance of the optimized PBRB was then thoroughly compared to conventional BRBs (CBRBs) using ETABS. The design of boundary components in buckling-restrained brace (BRB) systems is based on bracing element capacities. Accelerating the brace core yielding process could potentially reduce boundary component capacity requirements and overall structural costs. The present study aims to reduce core strength while minimizing stiffness reduction by integrating a perforated core into the BRB system, leading to hastening structural fuse. This research focused on evaluating various hole patterns involving 80 specimens arranged in both row and diagonal configurations, with the goal of acceptably reducing the required capacity and minimizing stiffness reduction. Furthermore, the effects of these hole configurations on key seismic performance indices of perforated buckling-restrained braces (PBRBs) were numerically assessed through nonlinear analyses using ABAQUS. The optimal perforation pattern was identified, and 16 configurations derived from it were modeled in MATLAB for curve fitting to establish formulaic relationships for stiffness and strength. The performance of the optimized PBRB was then thoroughly compared with that of conventional BRBs (CBRBs) using ETABS. The results indicated that the PBRB design significantly improved structural stiffness and resistance, reduced the cross-sectional area, enhanced fuse performance, and lowered the forces exerted on the beams and columns. This design led to an 8% reduction in the building weight, providing an economically optimized solution.