Judul: Pengaruh Sikap dan Preferensi terhadap Perilaku Pembelian Pangan Lokal
Abstrak: Perkembangan Indonesia saat ini, membuat masyarakat semakin selektif dalam pembelian pangan. Pemilihan pangan lokal dan impor sudah mulai banyak dipertimbangkan masyarakat ketika melakukan pembelian. Penelitian ini bertujuan untuk menganalisis pengaruh sikap dan preferensi terhadap perilaku pembelian pangan lokal. Penelitian ini menggunakan desain cross sectional dengan metode survei. Lokasi penelitian di Kelurahan Pasir Jaya, Kecamatan Bogor Barat dan Kelurahan Kedung Badak, Kecamatan Tanah Sareal Kota Bogor. Responden berjumlah 250 ibu rumah tangga yang dipilih secara proportional random sampling. Hasil penelitian menunjukkan bahwa semakin baik sikap terhadap produk pangan lokal dan semakin baik preferensi terhadap produk pangan lokal akan meningkatkan perilaku pembelian pangan lokal.
Keyword: pangan lokal, perilaku pembelian, preferensi, sikap

Judul: Pengaruh Etnosentrisme, Sikap, dan Preferensi terhadap Perilaku Pembelian Buah Lokal di Perkotaan dan Perdesaan Bogor
Abstrak: The excess quantity of imported fruit in Indonesia has triggered business competition between local and import fruit. This research aimed to analyze the influence of ethnocentrism, attitude, and preference toward the purchasing behavior of local fruit in urban and rural. The design of this research used cross sectional study which involved 120 housewives. The result showed the significant positive relation between ethnocentrism, preference, and attitude. The age of respondent also relates positively to ethnocentrism and attitude. Ethnocentrism, attitude, and preference have no significant relation to the purchasing number of local fruit and local fruit expenditure. Based on multiple regression linear test, the education level of respondent and per capita income significantly positive influence toward the purchasing number of local fruit. The number of family member and per capita income also significantly positive influence toward local fruit expenditure.
Keyword: preference., local fruits, ethnocentrism, attitude

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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