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.

In becoming efl writing teacher: a diary study

Abstract: To improve teaching quality, teachers need a tool to help them reflect and evaluate their teaching decisions and actions. Teachers can always rely on schools to do such a job, but they can also use a personal and professional teaching diary as a means to do a self-analysis and evaluation. This article reports the practice of my using the teaching diary as a writing teacher as a means to help me look beyond and reflect on my teaching routines

Manajemen rantai pasokan industri farmasi di indonesia

Abstract: Supply Chain Management (SCM) plays a very important role in the pharmaceutical industry, especially in Indonesia, where more than 90 percent of raw materials for pharmaceutical industry are actually imported. It is known that Indonesia's pharmaceutical industry is very expensive. Government of Indonesia (GOI) is hardly managed the pharmaceutical industry due to its complexity. Too many players put its stakes in this industry. The growing industry clusters are also coloring the competition amongst existing players. This article is a literature review and enriched with secondary data to continue the work of Mustamu (2000). Meant to describe Indonesia's pharmaceutical industry from the perspective of supply chain management. The 120 days throughput time within the industry and the high margins make this industry very attractive for illegal pharmaceutical producers. To make it worse, the illegal pharmaceutical producers that copying products of legal pharmaceutical companies are also developing its distribution channels in the market. At the end, the unaware end-users are becoming victims of the game. Abstract in Bahasa Indonesia : Manajemen Rantai Pasokan (MRP) memainkan peran penting dalam industri farmasi, terutama di Indonesia di mana lebih dari 90 prosen bahan baku industri farmasi adalah bahan impor. Di dunia, industri farmasi Indonesia dikenal sangat mahal. Pemerintah Republik Indonesia (RI) sulit mengendalikan industri farmasi akibat kompleksitas yang dimilikinya. Terlalu banyak pemain yang memiliki kepentingan dalam industri ini. Kelompok industri pendukung yang sedang tumbuh juga mewarnai persaingan antar pemain yang ada. Artikel ini bersifat kajian pustaka dan diperkaya dengan data sekunder sebagai kelanjutan karya Mustamu (2000). Dimaksudkan untuk menggambarkan industri farmasi Indonesia dari perspektif MRP. 120 hari waktu perlaluan (throughput time) dalam industri ini serta tingginya prosentase keuntungan, menjadikan industri ini sangat atraktif bagi para produsen farmasi ilegal. Lebih buruk lagi, produsen farmasi ilegal yang meniru produk perusahaan farmasi legal ternyata juga membangun jaringan distribusi sendiri di dalam pasar. Pada gilirannya, pengguna akhir yang tidak menyadari hal tersebut menjadi korban dari permainan ini. Kata kunci: manajemen rantai pasokan, farmasi, Indonesia.

Effect of Key User Empowerment, Purchasing Strategy, Process Integration, Production System to Operational Performance

Abstract: This study examines the influence of key user empowerment on the operational performance through the mediating role of process integration, purchasing strategy and production system. The questionnaires were distributed to 120 manufacturing companies domiciled in East Java Region. Of the 120, 70 questionnaires are valid for further analysis. Data analysis used Partial Least Square (PLS) version 3.0. The finding are as follows: Key user empowerment affects the process integration. Key user empowerment influence the purchasing strategy. Process integration affects the purchasing. Process integration also influence the production system. Purchasing strategy provide support in the company's production system. Process Integration affects the company's operational performance. Purchasing strategy does not affect the operational performance. Purchasing strategy has an impact on company performance through a production system. The production system provides an increasein company performance. In summary, the key user empowerment has a direct and indirect impact on operational performance through process integration, purchasing strategy, and the production system. This study enriches the current research in supply chain management and provide an insight for the manager in improving the operational performance.

Mining Fuzzy Multidimensional Association Rules Using Fuzzy Decision Tree Induction Approach

Abstract: Mining fuzzy multidimensional association rules is one of the important processes in data mining application. This paper extends the concept of Decision Tree Induction (DTI) dealing with fuzzy value in order to express human knowledge for mining fuzzy multidimensional association rules. Decision Tree Induction (DTI), one of the Data Mining classification methods, is used in this research for predictive problem solvi ng in analyzing patient medical track records. Meaningful fuzzy labels (using fuzzy sets) can be defined for each domain data. For example, fuzzy labels poor disease, moderate disease, and severe disease are defined to describe a condition/type of disease. We extend and propose a concept of fuzzy information gain to employ the highest information gain for splitting a node. In the process of generating fuzzy multidimensional association rules, we propose some fuzzy measures to calculate their support, confidence and correlation. The designed application gives a significant contribution to assist decision maker for analyzing and anticipating disease epidemic in a certain area.

Pyrolysis of aluminium loaded polymethylsiloxanes: The influence of Al/PMS ratio on mullite formation

Abstract: Al-filler-loaded polymethylsiloxane (PMS) was pyrolysed in air atmosphere at temperatures 400–1700 °C. The effect of the Al amount added to the PMS on phase development, densification behaviour and microstructure evolution was studied by simultaneous thermal analysis, X-ray diffraction, scanning electron microscopy and electron probe microanalysis. The Al/PMS reaction route is complex producing Si, SiO2 (amorphous and cristobalite), Al2O3 (γ-, ι- and α-Al2O3), Al2OC, Al4O4C, Al4SiC4, and AlN, depending on the ratio of Al/PMS in the initial mixture. Increasing the Al content (high Al/PMS ratio) reduces the amount of voids and porosities after PMS degradation. The voids and porosities provide access for the oxygen atmosphere into the inner structure to oxidise the Al particles, Si or SiC and also as channels for the PMS degradation products to escape. Mullite formation was identified in sample containing >73 wt% Al at temperature as low as 1400 °C.