Petra Christian University

About: Petra Christian University is a education organization based out in Surabaya, Indonesia. It is known for research contribution in the topics: Population & Customer satisfaction. The organization has 2412 authors who have published 2893 publications receiving 10429 citations.

Peran warna interior terhadap perkembangan dan pendidikan anak di taman kanak-kanak

Abstract: In the pre-school ages, children developed very rapid physically, cognitively, emotionally as well as socially. This has a great impact for their future. A kindergarten as their first formal educational institution is a means to help provide the stimuli and support for them in their growing period and their development. The factors which contributes to the children development at the kindergarten are the quality of teachers, activity programs, and physical surroundings. In order that the activity programs can be carried out smoothly and the children development can be optimal, there should be supporting factors such as classrooms as part of the physical surroundings, which can meet the needs for the development of pre-school children. Colours can support the condition of classroom interior which contributes to the learning activities suitable to the children's need to develop them optimally Abstract in Bahasa Indonesia : Pada usia prasekolah anak-anak akan mengalami perkembangan yang sangat cepat dari segi fisik, kognitif, emosi maupun sosial. Hal ini akan sangat berpengaruh pada masa depan anak kelak. Taman kanak-kanak sebagai lembaga pendidikan formal pertama merupakan salah satu sarana untuk membantu memberi rangsangan dan dukungan dalam masa pertumbuhan dan perkembangan anak sesuai dengan sifat-sifat alam. Faktor-faktor yang berperan dalam menunjang perkembangan anak di taman kanak-kanak adalah kualitas guru, program kegiatan dan lingkungan fisik. Agar program kegiatan dapat berjalan dengan baik dan perkembangan anak optimal, maka perlu didukung oleh ruang kelas sebagai bagian dari lingkungan fisik, yang sesuai dengan kebutuhan dan perkembangan anak. Warna dapat berperan dalam mendukung kondisi interior kelas yang menunjang program kegiatan belajar sesuai kebutuhan anak agar perkembangan mereka dapat optimal. Kata kunci : warna, taman kanak-kanak, perkembangan anak TK

Kriging-Based Finite Element Method: Element-By-Element Kriging Interpolation

Abstract: An enhancement of the finite element method with Kriging shape functions (K-FEM) was recently proposed. In this method, the field variables of a boundary value problem are approximated using ‘element-by-element’ piecewise Kriging interpolation (el-KI). For each element, the interpolation function is constructed from a set of nodes within a prescribed domain of influence comprising the element and its several layers of neighbouring elements. This paper presents a numerical study on the accuracy and convergence of the el-KI in function fitting problems. Several examples of functions in two-dimensional space are employed in this study. The results show that very accurate function fittings and excellent convergence can be attained by the el-KI.

Server Scalability Using Kubernetes

Abstract: An enterprise that has implemented virtualization can consolidate multiple servers into fewer host servers and get the benefits of reduced space, power, and administrative requirements. Sharing their hosts’ operating system resources, containerization significantly reduces workloads, and is known as a lightweight virtualization. Kubernetes is commonly used to automatically deploy and scale application containers. The scalability of these application containers can be applied to Kubernetes with several supporting parameters. It is expected that the exploitation of scalability will improve performance and server response time to users without reducing server utility capabilities. This research focuses on applying the scalability in Kubernetes and evaluating its performance on overcoming the increasing number of concurrent users accessing academic data. This research employed 3 computers: one computer as the master node and two others as worker nodes. Simulations are performed by an application that generates multiple user behaviors accessing various microservice URLs. Two scenarios were designed to evaluate the CPU load on single and multiple servers.On multiple servers, the server scalability was enabled to serve the user requests. Implementation of scalability to the containers (on multiple servers) reduces the CPU usage pod due to the distribution of loads to containers that are scattered in many workers. Besides CPU load, this research also measured the server's response time in responding user requests. Response time on multiple servers takes longer time than that on single server due to the overhead delay of scaling containers.

Q learning behavior on autonomous navigation of physical robot

Abstract: Behavior based architecture gives robot fast and reliable action. If there are many behaviors in robot, behavior coordination is needed. Subsumption architecture is behavior coordination method that give quick and robust response. Learning mechanism improve robot's performance in handling uncertainty. Q learning is popular reinforcement learning method that has been used in robot learning because it is simple, convergent and off policy. In this paper, Q learning will be used as learning mechanism for obstacle avoidance behavior in autonomous robot navigation. Learning rate of Q learning affect robot's performance in learning phase. As the result, Q learning algorithm is successfully implemented in a physical robot with its imperfect environment.

An analysis on syntactic and semantic factors found in newspaper headlines

Abstract: As a type of media text, newspaper has an important role in human's life because it presents various local, national and international information and events. In order to attract readers' attention, journalists make the headlines as ambiguous and confusing as possible so that readers are curious to know the content of the whole story and they would read it. Moreover, in presenting the information or events, different reporters will have different linguistic choices which include the choice of words and expressions and different linguistic structures. Thus, this paper analyzes how the different linguistic choices and structures used in the headlines of The Jakarta Post and Indonesian Daily News would construct different linguistic representations of events in the world.