Judul: Analisis Faktor-Faktor yang Mempengaruhi Perpindahan Merek pada Pelanggan Kartu Prabayar GSM
Abstrak: Cellular industry of Indonesia has grown many folds in recent years. This situation has originated a hyper competition among major cellular service providers in Indonesia. In this competitive cellular market, customer switching is injurious for every telecommunication company. This study explore relationship between customer loyalty and variety seeking behavior on customer switching in cellular industry especially pre paid GSM customer. Customer loyalty influenced customer value, satisfaction, and switching barrier. Factor that influence variety seeking behavior are variety seeking need and characteristic of product category. This research was conducted in Jakarta, primary data was collected by a set of questionnaire and allocated to 230 prepaid GSM customer. Research methods used structural equation modeling (SEM) using AMOS version 18. Findings revealed that customer value and switching barrier have significant effect on customer loyalty; variety seeking need has significant positive effect on variety seeking behavior; customer loyalty has significant negative effect on brand switching; and variety seeking behavior has significant positive effect on brand switching.
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Judul: Analisis Daya Tahan Pengguna Nomor Kartu Prabayar Telekomunikasi
Abstrak: Telecomunication prepaid customer has increased significanly compared to postpaid customers. The growth in prepaid is driven by a end-to-end simple ecosystem that is built by telecommunication operator, for example started pack can be bought anywhere anytime, retail outlet for voucher can be found everywhere. That simplicity has been creating another effect to customer in which they can easily switch sim card after the balance run out.That behavior driven by regulation in buying prepaid SIM that not optimum in which customer data can not be validated. The impact of rotational prepaid customer gives a high cost to telecommunication provider and the availability of number becomes limited. For customers, the impact of rotational SIM has made them vulnerable from spamming. Those impact can be minimized if regulator and telecommunication operator knows the factors that drives customer changing their SIM cards.This study is to define the factors which has driven customers in buying new SIM cards, by survival model of prepaid customers and to define the probability loyal customer based on significant characteristics. Data in this study is based on survey to 300 prepaid customers in DKI Jakarta. Survival Analysis is a statistical technique to define the pattern of survivals based on failure times and survival times. Data of survival times is measured from the time customer bought the SIM card until event in which customer stop using it. In his study, characteristic that are both significantly effect to drives rotational customer is age, voucher price and income. Based on the value of its hazard ratio, age 16 until 18 years, income 1.5 until 3 million voucher price under 10 thousand rupies category is an indicator that gives customer the greatest influence in determining the level of one’s impact of rotational prepaid customer.
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Judul: Sintesis Nanorod Seng Oksida (ZnO) dengan Metode Sonokimia
Abstrak: Gelombang ultrasonik telah digunakan untuk membantu sintesis ZnO. ZnO terbentuk dari campuran ZnAc dan NaOH. ZnO disintesis dengan variasi konsentrasi ZnAc 0.5 M ( ZnO 1:1 ) dan 1.5 M ( ZnO 3:1 ) yang dicampurkan dengan NaOH konsentrasi 0.5 M. Sampel yang diporoleh dikarakterisasi dengan XRD dan SEM. Karakterisasi difraksi sinar-X menunjukkan bahwa struktur kristal ZnO yang dihasilkan merupakan heksagonal dengan pertumbuhan yang dominan pada orientasi bidang nonpolar a dengan indeks hkl 101. Kristalinitas dan kemurnian kristal ZnO 1:1 lebih baik dibandingkan ZnO 3:1 ditunjukan dengan intensitas puncak difraksi sinar-X yang lebih tinggi, sempit dan tajam. Untuk ukuran kristalit ZnO 1:1 mempunyai rata-rata ukuran kristalit 30.57 ± 4.31 nm sedangkan ZnO 3:1 mempunyai ukuran rata-rata 20.25 ± 7.12 nm. Dari ukuran kristal yang terbentuk partikel ZnO termasuk nanokristal. ZnO 1:1 terbentuk batang-batang nano (nanorods) sedangkan pada ZnO 3:1 tidak terbentuk batang-batang nano (nanorods). Untuk ukuran morfologi, ZnO 1:1 mempunyai rata-rata ukuran butiran kristal 230 nm dan lebih besar dibandingkan ukuran ZnO 3:1 yang mempunyai rata-rata ukuran butiran kristal 50 nm.
Keyword: nanorot, sintesis, sonokimia, ZnO