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.

Using information and communication technology (ict) to enhance language teaching & learning: an interview with dr. a. gumawang jati

Abstract: In recent years, information and communication technology (ICT) has become embedded and affected the every aspect of our lives. Rapid development of ICT has changed our language teaching pedagogy at all levels. Teachers, curriculum developers, researchers have been constantly striving to find techniques to use some form of it to both assist and enhance language learning. What is more exciting is that studies have demonstrated positive effects that ICT brings towards students' learning motivation (Chenoweth, Ushida & Murday, 2006; Stepp- Greany, 2002), students' personal needs and learning styles (Gimenez, 2000), students' language mastery (Stepp-Greany, 2002), effective teaching and learning process (Al-Jarf, 2004), etc. Although these studies have shown that ICT has the potential important role in supporting and enhancing language learning, the use of ICT should never be the goal in and of itself. The responsibility for language instruction should be in the hands of qualified teachers who have the knowledge and expertise to manage and to make the best use of it to accomplish learning objectives.

Analisa kualitas layanan sebagai pengukur loyalitas pelanggan hotel majapahit surabaya dengan pemasaran relasional sebagai variabel intervening

Abstract: This research aims to investigate the influence of service quality on customer loyaty by using relationship marketing as an intervening variable. Service quality is measured by applying tangible, reliability, responsiveness, assurance and empathy. Relationship marketing is observed from harmony, acceptance dan participation simplicity, while customer loyalty is measured by indicators such as say positive things, recommend friend, and continue purchasing. Using two step regressions, the result indicate that service quality has a direct influence on customer loyalty and indirect effect on customer loyalty with relationship marketing as an invertening variable. Abstract in Bahasa Indonesia : Penelitian ini bertujuan untuk meneliti pengaruh kualitas layanan terhadap kesetiaan pelanggan Hotel Majapahit dengan menggunakan variabel pemasaran relasional sebagai variabel intervening. Kualitas layanan ditinjau dari: tangible; reliability, responsiveness, assurance dan empathy. Pemasaran relasional ditinjau dari harmony, acceptance dan participation simplicity. Sedangkan loyalitas pelanggan ditinjau dari say positive things, recommend friend, continue purchasing. Menggunakan regresi dua langkah, hasil penelitian menunjukkan adanya pengaruh langsung dari kualitas layanan terhadap kesetiaan pelanggan serta pengaruh tidak langsung dari kualitas layanan terhadap kesetiaan pelanggan dengan pemasaran relasional sebagai variabel intervening. Kata kunci: kualitas layanan, pemasaran relasional, kesetiaan konsumen

Risk-based maintenance strategy for deteriorating bridges using a hybrid computational intelligence technique: a case study

Abstract: The current bridge inspection and maintenance protocol that is used in most countries focuses primarily on the visible aspects of bridge fitness and underestimates the invisible aspects, such as re...

The use of bottom ash for replacing fine aggregate in concrete paving blocks

Abstract: Bottom ash that results from coal burning for electrical generation is still much underutilized in Indonesia and it is necessary to increase the usage of this waste. The manufacture of paving blocks using bottom ash, which is normally associated with high water absorption due to its high porosity and carbon content, was examined in this study with the aim to increase the usage of this waste material. The study was done in three phases: (1) the mixture of cement and bottom ash passing sieves of 2 and 5 mm were done with ratios of 1:3, 1:4, and 1:5; from the best proportion, fly ash was used to replace the cement material from 10–80%, and (3) samples with 30% and 50% fly ash replacement ratios were used in combination with 5 mm and 10 mm sieved bottom ash. Compressive strength, water absorption, and abrasion resistance tests were conducted to assess the properties of the resultant paving block. From the result, bottom ash is used to replace natural sand in making paving blocks. By optimizing the particle packing density and using fly ash as a cement replacement, the compressive strength of paving blocks can exceed 40 MPa.

IoT Based Water Level Control System

Abstract: Nowadays, almost all communication using the internet, but is not all, now object also can communicating each other, this concept is calls the Internet of Things (IoT). Things in IoT can be everything that we use every day. In this project, the “thing” is a water container, or in Indonesia, it called “bak mandi”. Why water container? Because, after we use water in the water container usually the level of the water container is reduced and we must fill it up for other people that use the water container. Generally, in the process of filling the water container, we forgot to close the valve or pump so water is overflowing and the water is wasted. That is why we propose to use the Internet of Things concept that can solve the problem. Our approach utilizes a controller of ESP8266 that can provide monitoring level of the water container. That controller will open and close the pump or valve automatically so that the water is not overflowing and wasted. We use an ultrasonic sensor to sense the level of the water. We utilize the Blynk IoT service incorporated with PHP web programming in providing water level monitoring and control. We have tested the system on a 64 cm water container. The system has an error of 2 cm in controlling the water level.