Judul: Analisis keputusan pembelian konsumen di RM. Bumi Aki Kota Bogor
Abstrak: Bogor is a well known city for culinary recreation in JABODETABEK. The emerging of Bumi Aki restaurant in Bogor has made the competition in culinary sector more competitive. The purpose of this research was to analyze the process of purchasing decision and consumer satisfaction of Bumi Aki restaurant. The purchasing decision process was analyzed in a descriptive way, and the consumer satisfaction level was analyzed using Importance Performance Analysis (IPA) and Customer Satisfaction Index (CSI). Based on IPA, there were three attributes located in quadrant I wich they performance were the main priority to be fixed, they were foods and beverages prices, order service speed, and responsiveness of complain handling. Attributes that located in quadrant II, wich they performance were need to be maintained, were foods and beverages taste, restaurant location, restaurant cleanliness, parking lot capacity, restaurant comfortness, and waitress hospitality and politeness. The result of CSI showed that consumers of Bumi Aki restaurant were satisfied.
Keyword: CSI, IPA, satisfaction, purchasing decision, Bogor Agricultural University (IPB)

Judul: Analisis Tahap Pengambilan Keputusan Konsumen di Restoran Warung Custom Bogor.
Abstrak: Persaingan antar restoran di Kota Bogor semakin tinggi karena semakin meningkatnya jumlah wisatawan yang datang ke Kota Bogor. Tujuan dari penelitian ini adalah untuk menganalisis tahap keputusan pembelian, dan kepuasan konsumen Restorang Warung Custom Bogor sehingga dapat direkomendasikan langkah-langkah untuk meninkat kepuasan konsumen. Data diperoleh dari 98 responden dengan metode convenience sampling serta diteliti denan Customer Satisfaction Index (CSI) dan Important Performance Analysis (IPA). Hasil analisis menunjukkan bahwa 78.94 persen konsumen merasa puas dan atribut yang menjadi prioritas utama untuk diperbaiki adalah pengetahuan pramusaji dan kecepatan penyajian menu. Untuk meingkatkan kepuasan konsumen, restoran sebaiknya memberikan pelatihan kepada para karyawan dan memberikan motivasi sehingga karyawan mampu bekerja lebih baik lagi.
Keyword: CSI, IPA, perilaku konsumen, restoran, keputusan pembelian

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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