Judul: Analisis Kepuasan dan Loyalitas Konsumen Restoran Sop Duren Rafi Medan di Bogor
Abstrak: Restoran Sop Duren Rafi Medan merupakan restoran yang menawarkan menu olahan durian dengan menu utama yaitu sop duren. Penelitian ini bertujuan untuk mengidentifikasi karakteristik konsumen, menganalisis proses keputusan pembelian konsumen, tingkat kepuasan konsumen, dan loyalitas konsumen yang berimplikasi terhadap bauran pemasaran dari Restoran Sop Duren Rafi Medan. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif, Customer Satisfaction Index (CSI), Importance Performance Analysis (IPA), dan piramida loyalitas. Karakteristik konsumen Restoran Sop Duren Rafi Medan mayoritas berdomisili di Bogor, belum menikah, berjenis kelamin perempuan, berusia 17- 22 tahun, pendidikan terakhir SMA, berprofesi sebagai pelajar atau mahasiswa dan memiliki pendapatan perbulan sebesar Rp500 000- Rp1 499 999. Pada tahap keputusan pembelian ( pembelian tergantung situasi, sumber yang mempengaruhi adalah teman, hari berkunjung tidak tentu, waktu kerja sore hari), dan keputusan pasca pembelian (konsumen merasa puas dan konsumen bersedia untuk berkunjung kembali). Nilai dari Customer Satisfaction Index (CSI) adalah sebesar 75.52 persen.Tingkat loyalitas konsumen berada pada tingkat committed buyer.
Keyword: Consumer characteristic, Loyality, Satisfaction, Sop Duren Rafi Medan, Management, Customer satisfaction, Desicion process, Marketing mix, Bauran pemasaran, Loyalitas konsumen

Judul: Analisis Kepuasan dan Loyalitas Konsumen Restoran Sop Duren Lodaya Bogor
Abstrak: This study aims to analyze the characteristics of consumers, purchasing decision process, satisfaction and loyalty consumer of Sop Duren Lodaya Restaurant. Respondents in this study were selected by non-probability sampling method with convenience sampling technique. The number of respondents in this study was 100 respondents. Descriptive analysis, Importance Performance Analysis (IPA), Customer Satisfaction Index (CSI) and pyramid loyalty were employed in this study. Most of the customers are 18-24 years old, live in Bogor, pursuing bachelor degree, and single with income between Rp1 500 000 and Rp 2 499 000 per month. CSI of this restaurant was 75.60 percent, implying that the customers are satisfied. Importance Performance Analysis showed that promotion through media, sanitation of the restaurant, comfort of the restaurant, and the availability and sanitation of toilet were the priority to be improved. Customer loyalty level was at the level of committed buyer.
Keyword: Consumer characteristics, IPA, CSI

Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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