Daniel Tjandra
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View article: Ethical Integrity and Transformational Leadership in Implementing STEM-Based Merdeka Curriculum in Rural Elementary Schools
Ethical Integrity and Transformational Leadership in Implementing STEM-Based Merdeka Curriculum in Rural Elementary Schools Open
The limited resources that can integrate transformational leadership and ethical integrity to support the implementation of the STEM-based Independent Curriculum are the main focus that must be resolved. This study aims to analyze how ethi…
View article: Kurikulum pendidikan agama Kristen yang inklusif dan solider: Respons etika solidaritas Kristen terhadap fragmentasi sosial era woke culture
Kurikulum pendidikan agama Kristen yang inklusif dan solider: Respons etika solidaritas Kristen terhadap fragmentasi sosial era woke culture Open
Woke Culture and Cancel Culture present new ethical challenges in the digital society, including within Christian Religious Education in Indonesia. The resulting social fragmentation—driven by confrontational justice narratives—demands a m…
View article: Implementation of the Independent Curriculum in Christian Education Lessons
Implementation of the Independent Curriculum in Christian Education Lessons Open
The education curriculum in Indonesia continues to evolve with the times. Recently, the education system transitioned from the 2013 Curriculum to the Merdeka Curriculum. This research aims to analyze the implementation of the Merdeka Curri…
View article: USE OF U-WRAP TO OVERCOME CONCRETE COVER DELAMINATION IN VARIOUS SIZES OF BEAMS USING STRUT AND TIE MODELLING
USE OF U-WRAP TO OVERCOME CONCRETE COVER DELAMINATION IN VARIOUS SIZES OF BEAMS USING STRUT AND TIE MODELLING Open
Reinforced concrete beams reinforced with Fiber Reinforced Polymer (FRP) have several failure patterns, one of which is Concrete Cover Delamination. To prevent this failure, in this study, FRP U-Wrap was installed which was calculated usin…
View article: The Effect of Polypropylene Fiber as an Additive in Open Graded Emulsion Mixture
The Effect of Polypropylene Fiber as an Additive in Open Graded Emulsion Mixture Open
The impact of global warming in Indonesia is the longer dry season in some areas. It is important to reduce gas emission that is associated with global warming. In road construction, Cold Asphalt Emulsion Mixture (CAEM) is considered more …
View article: Properties evaluation of cold mix asphalt based on compaction energy and mixture gradation
Properties evaluation of cold mix asphalt based on compaction energy and mixture gradation Open
Mix design for cold mix asphalt as a surface course has several factors to be considered, such as the traffic level and environmental condition. The compaction energy in mix design is related to expected traffic level. The choice of aggreg…
View article: Dampak Negatif Proyek Pembangunan Rumah Tinggal Terhadap Bangunan di Sekitarnya – Studi Kasus di Surabaya
Dampak Negatif Proyek Pembangunan Rumah Tinggal Terhadap Bangunan di Sekitarnya – Studi Kasus di Surabaya Open
The need for housing in a metropolitan city such as Surabaya will increase with time. These needs can be met by building new houses or renovating. Sometimes the construction and renovation of houses will more or less have an environmental …
View article: Potential damage to residential building due to adjacent surcharge fill loading-case studies in Surabaya, Indonesia
Potential damage to residential building due to adjacent surcharge fill loading-case studies in Surabaya, Indonesia Open
Housing construction is a common construction activity and is always needed from time to time. House construction can be in the form of building new house or renovating an existing building. The impact of construction work to adjacent buil…
View article: The effect of crumb rubber in dense graded and open graded cold mixture asphalt
The effect of crumb rubber in dense graded and open graded cold mixture asphalt Open
Recycling tires is one of the eco-friendly way for reducing environmental problems. Incorporating crumb rubber in asphalt mixtures is an alternative way for reusing the end-of-life tires in road construction. The main purpose of this study…
View article: Reliability-based Design Optimization for Structures Using Particle Swarm Optimization
Reliability-based Design Optimization for Structures Using Particle Swarm Optimization Open
Studies on structure design optimization have been conducted extensively over the past decades because it can increase structural efficiency and maximize the engineers’ profit. One of the significant current discussions is the reliability …
View article: Comparative Study of Particle Swarm Optimization Algorithms in Solving Size, Topology, and Shape Optimization
Comparative Study of Particle Swarm Optimization Algorithms in Solving Size, Topology, and Shape Optimization Open
This paper focuses on optimizing truss structures while propose best PSO variants. Truss optimization is one way to make the design efficient. There are three types of optimization, size optimization, shape optimization, and topology optim…
View article: The Utilisation of the Numerical Hydrodynamic Model to Face Rob Floods in Coastal Areas in the Industrial Revolution Era 4.0 at East Java Indonesia
The Utilisation of the Numerical Hydrodynamic Model to Face Rob Floods in Coastal Areas in the Industrial Revolution Era 4.0 at East Java Indonesia Open
Global warming has impacted the sea-level rise. Then it caused the Rob flooding in coastal areas. The research location is in Rob floods area in Tegalsari Hamlet, Jabon Subdistrict, Sidoarjo that have damaged seaweed cultivation, and estim…
View article: Structural Design Optimization Using Particle Swarm Optimization and Its Variants
Structural Design Optimization Using Particle Swarm Optimization and Its Variants Open
Structural design optimization has become an extremely challenging and more complex task for most real-world practical applications. A huge number of design variables and complex constraints have contributed to the complexity and nonlinear…
View article: Application of Metaheuristic Algorithms in Truss Structure Sizing Optimization
Application of Metaheuristic Algorithms in Truss Structure Sizing Optimization Open
Field studies of structural optimization have gained increased attention due to the rapid development of metaheuristic algorithms. One widely known metaheuristic algorithm, Particle Swarm Optimization (PSO), has been extensively used to so…
View article: Impelementasi Pembelajaran Pendidikan Agama Kristen di Abad 21
Impelementasi Pembelajaran Pendidikan Agama Kristen di Abad 21 Open
The era of globalization is inevitable, willing or unwilling to be ready or not ready for everyone to face globalization. The era of globalization can be said as an era of openness, an era of technology that is close to people's lives and …
View article: Effect of Crumb Rubber as Fine Aggregate Replacement in Cold Mixture Asphalt
Effect of Crumb Rubber as Fine Aggregate Replacement in Cold Mixture Asphalt Open
The number of waste tires has been increasing as an impact of rapidly growing number of vehicles and becomes a global environmental concern. The environmental impact can be reduced by converting the waste tires to crumb rubber and reusing …
View article: Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode
Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode Open
The use of Carbon Fiber Reinforced Polymer (CFRP), for both strengthening material and anode for Impressed Current Cathodic Protection (ICCP) system, is being investigated. The focus of this study is to develop the epoxy that has good bond…
View article: The shear strength alteration on clay soil considering the plasticity index and the percentage of fine aggregates in tropical climate regions
The shear strength alteration on clay soil considering the plasticity index and the percentage of fine aggregates in tropical climate regions Open
Seasonal changes in tropical regions could cause variations of soil water content, especially in clay soil. Furthermore, there is a significance difference in shear strength between wet and dry clay soil which depends on the plasticity ind…
View article: The use of crumb rubber for replacing fine aggregate in cold mixture asphalt
The use of crumb rubber for replacing fine aggregate in cold mixture asphalt Open
In order to consider the environmental impact, this study investigated the effect of crumb rubber on the mechanical performance of cold mixture asphalt. Crumb rubber was obtained from the process of recycling waste tires, which this waste …
View article: Physicochemical Characteristics of Sweet Potato (Ipomoea batatas L.) Chips Pre-treated by Commercial and Eggshell Extracted Calcium Chloride
Physicochemical Characteristics of Sweet Potato (Ipomoea batatas L.) Chips Pre-treated by Commercial and Eggshell Extracted Calcium Chloride Open
Chips is a snack with thin shape and crispy characteristic because of its low water content. As snack, good quality of chips does not emphasized on its nutritional value, but consumer rather focused on organoleptic properties. Increase the…
View article: Analisis Pengaruh Fluktuasi Muka Air Waduk terhadap Stabilitas Lereng Waduk Dengan Menggunakan Program Plaxis 2D
Analisis Pengaruh Fluktuasi Muka Air Waduk terhadap Stabilitas Lereng Waduk Dengan Menggunakan Program Plaxis 2D Open
Reservoir is needed as a source of water supply to the surrounding populations. The design of a reservoir needs to consider several aspects of soil embankment such as variations in water content and changes in shear soil shear strength and…
View article: The Benefit of Wind Distribution Analysis for Coastal Construction Design in East Java Province
The Benefit of Wind Distribution Analysis for Coastal Construction Design in East Java Province Open
To create a safe and durable coastal structures design, a comprehensive data including minimum, maximum, and significant sea wave’s height are needed. Normally, to obtain such massive data, engineers need to elaborate specialized consultan…
View article: Prediction of High-Performance Concrete Strength Using a Hybrid Artificial Intelligence Approach
Prediction of High-Performance Concrete Strength Using a Hybrid Artificial Intelligence Approach Open
This study introduces an improved artificial intelligence (AI) approach called intelligence optimized support vector regression (IO-SVR) for estimating the compressive strength of high-performance concrete (HPC). The nonlinear functional m…
View article: Use of Crumb Rubber as an Additive in Asphalt Concrete Mixture
Use of Crumb Rubber as an Additive in Asphalt Concrete Mixture Open
As the rapidly growing number of vehicles in Indonesia, the waste of tire rubber becomes a major environmental concern. The use of crumb rubber, which is the recycled tire rubber, as an additive in hot mix asphalt mixture is considered as …