Judul: Pengaruh Asal Negara, Persepsi dan Sikap terhadap Preferensi Buah dan Sayur Impor dan Lokal
Abstrak: Tujuan dari penelitian ini adalah untuk 1) menganalisis perbedaan sikap, dan preferensi buah dan sayur antara kelompok tidak terpapar dan terpapar informasi asal negara; 2) menganalisis pengaruh asal negara dan sikap terhadap preferensi pada buah dan sayur; dan 3) menganalisis pengaruh persepsi dan sikap terhadap preferensi pada buah dan sayur. Penelitian menggunakan metode survei dan kuasi eksperimen dengan melibatkan 120 ibu rumah tangga. Data dianalisis menggunakan uji beda independen t-test dan analisis SmartPLS. Hasil penelitian ini menunjukkan bahwa terdapat perbedaan yang signifikan sikap antara subjek yang tidak dipaparkan dan dipaparkan informasi asal negara. Asal negara dari buah dan sayur berpengaruh positif signifikan terhadap pembentukan sikap pada hasil eksperimen. Sikap berpengaruh positif signifikan terhadap preferensi pada hasil survei.
Keyword: asal negara, kuasi eksperimen, persepsi, preferensi, sikap

Judul: Pengaruh Citra, Preferensi, dan Sikap terhadap Perilaku Pembelian Buah Lokal
Abstrak: A good response to imported fruits by the public, impact to more competitiveness rivalry between the local and import fruits in the market. The aim of this study was to analyze the effect of image, preference, and attitude toward the purchase behavior of local fruits. The design of this study was cross sectional, and the research were located at Baranangsiang and Cihideung Ilir villages. The sample of this study was 120 households who buy fruits and selected by cluster. The result show significant differences between characteristic, images, attitude, and purchase behavior of local fruits on household in urban and rural area, but there is no distinction preference to local fruits on housewives in the urban and rural area. Factors that effect purchase behavior of local fruits by housewives are age, the number member of family, long education of the mother and the level of preference against local fruits.
Keyword: purchase on local fruits, preference, image, 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.
Keyword: