Judul: Pengaruh Atribut Produk terhadap Keputusan Pembelian Handphone Smartphone Samsung Galaxy Young S6310
Abstrak: The purposes of this research are analyzing the influence of product attributes that consists of quality, fitur and design on the purchasing decision handphone smartphone Samsung Galaxy Young S6310 and analyzing which attribute has a dominant influence on the purchasing decision handphone smartphone Samsung Galaxy Young S6310. Independent variables in this research consist of quality (X1), fitur (X2) and design (X3). Dependent variable in this research is purchasing decision (Y). Analysis method is used in this research is multiple linier regression. The result of F test shows that product attributes which consist of quality, fitur and design are influencing simultaneously on the purchasing decision. The result of t test shows that quality, fitur and design influence positive partially on the purchasing decision. The dominant product attributes on the purchasing decision handphone smartphone Samsung Galaxy young S6310 is design
Keyword: purchasing decision., Product attributes

Judul: Faktor-Faktor yang Mempengaruhi Mahasiswa dalam Memilih Merek Smartphone dan Dampaknya Terhadap Pangsa Pasar (Studi Kasus: IPB)
Abstrak: Smartphone sudah menjadi kebutuhan masyarakat modern di berbagai kalangan usia saat ini. Berbagai merek smartphone yang masuk ke Indonesia bersaing menawarkan produknya dengan berbagai keunggulan masing-masing menimbulkan persaingan dalam merebut pangsa pasar. Variasi pada produk smartphone seringkali mendorong konsumen melakukan perpindahan merek yang kemudian berakibat pada berubahnya kondisi pangsa pasar setiap tahun. Evaluasi atribut produk yang relevan merupakan tahap penting dalam membuat keputusan pembelian. Tujuan dari penelitian ini adalah memetakan posisi atribut yang dipentingkan dalam pemilihan merek smartphone dengan biplot berdasarkan persepsi mahasiswa dan menganalisis pangsa pasar smartphone dengan rantai Markov. Hasil penelitian menunjukkan atribut harga dan spesifikasi paling mempengaruhi pemilihan merek Oppo dan Xiaomi. Atribut desain, kualitas, dan layanan purna jual paling mempengaruhi pemilihan merek Realmi dan Iphone. Atribut citra merek yang paling mempengaruhi pemilihan merek Samsung dan Vivo. Hasil penelitian juga menunjukkan pada kondisi steady state atau keseimbangan jangka panjang, pangsa pasar Samsung sebesar 19,599%, Oppo sebesar 0,024%, Vivo sebesar 0,695%, Xiaomi sebesar 2,712%, Realmi sebesar 0,007%, Iphone sebesar 76,903%, dan merek lainnya 0% ., Smartphones have become a necessity for modern society in various age groups today. Various smartphone brands entering Indonesia compete to offer their products with various advantages then inflicts competition in capturing market share. Variations in smartphone products often encourage consumers to switch brands which then results in changing market share conditions every year. Evaluation of relevant product attributes is an important stage in making purchasing decisions. The purpose of this study is to map the position of the attributes that are important in choosing a smartphone brand with a biplot based on student perceptions and analyze the smartphone market share with the Markov chain. The results show that the price and specification attributes most influence the selection of the Oppo and Xiaomi brands. The attributes of design, quality, and after-sales service most influence the choice of the Realmi and Iphone brands. The brand image attribute that most influences the selection of the Samsung and Vivo brands. The results also show that in steady state or long-term equilibrium, Samsung's market share is 19.599%, Oppo is 0.024%, Vivo is 0.695%, Xiaomi is 2.712%, Realmi is 0.007%, Iphone is 76.903%, and other brands 0%.
Keyword: biplot, brand switching, market share, Markov chain, product attributes

Judul: Ornithonyssus Bursa (Berlese, 1888) Famili Macronyssidae yang Menyerang Unggas Dan Penaggulangannnya
Abstrak: Ornithonyssus bursa adalah tungau penghisap darah pada unggas di daerah tropis dan subtropis. Tungau ini relatif kecil, dengan panjang tubuh antara 700-1000 mikron dan lebarnya 250-490 mikron. Tubuhnya bulat berwarna coklat kekuningan sebelum menghisap darh dan berwarna merah setelah menghisap darah dari induk semangnya.
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