Judul: The Model of Purchasing Behaviour on E-Catalogue with Theory of Planned Behaviour Approach
Abstrak: E-katalog merupakan salah satu sistem informasi yang memungkinkan pengguna untuk mengakses dan mengelola informasi produk atau jasa yang dibutuhkan pemerintah secara digital. Hadirnya e-katalog membuka peluang bagi para pelaku pengadaan untuk memberikan solusi kemudahan transaksi pengadaan barang dan jasa secara online dan terintegrasi. Selain itu, e-katalog juga berperan sebagai alternatif proses pengadaan yang mudah bagi para pelaku pengadan. Saat ini masih terdapat kesenjangan yang signifikan antara target dan realisasi transaksi e-purchasing melalui e-katalog. Perilaku PPK yang belum optimal dalam pelaksanaan transaksi e-purchasing melalui e-katalog dan rendahnya literasi terhadap regulasi merupakan permasalahan yang dihadapi, sehingga penting untuk mengubah perilaku tersebut. Salah satu teori yang digunakan dalam menganalisis perilaku adalah Theory of Planned Behavior (TPB), yang dalam hal ini diperkaya dengan perceived web quality, self-efficacy, attitude, subjective norms, dan perceived behavioral control. Penelitian ini bertujuan menganalisis faktor-faktor yang memengaruhi purchase behavioral intention menggunakan e-katalog. Faktor dugaan yang dapat memengaruhi purchase behavioral intention adalah perceived web quality, self-efficacy, attitude, subjective norms, dan perceived behavioral control. Penelitian ini dilakukan terhadap 135 responden yang yang telah bertransaksi e-purchasing produk laptop melalui e-katalog. Kemudian dipilih secara simple random sampling yakni pengambilan sampel dari populasi secara acak tanpa memperhatikan strata yang ada dalam populasi dan setiap anggota populasi memiliki kesempatan yang sama untuk dijadikan sampel. Data dikumpulkan dengan cara mengisi kuesioner yang disebarkan secara online. Analisis statistik yang digunakan adalah SEM (Structural Equation Model) dengan menggunakan SmartPLS. Hasil penelitian menunjukkan self-efficacy, attitude, subjective norms, dan perceived behavioral control berpengaruh langsung secara signifikan terhadap purchase behavioral intention. Sementara perceived web quality tidak berpengaruh signifikan. Beberapa bentuk implikasi manajerial yang dapat dilakukan oleh pengelola sistem e-katalog adalah membuat kebijakan yang jelas terkait e-katalog sebagai solusi pengadaan barang dan jasa pemerintah, menyediakan pelatihan pemahaman e-katalog kepada pelaku pengadaan barang dan jasa pemerintah agar memudahkan implementasi pengadaan barang dan jasa melalui e-katalog, serta meningkatkan kualitas e-katalog agar mudah ditransaksikan., E-catalogue is an information system that allows users to access and manage information on products or services needed by the government digitally. The presence of e-catalogue opens opportunities for procurement actors to provide solutions for easy online and integrated goods and services procurement transactions. In addition, e-catalogue also acts as an easy alternative procurement process for procurement actors. Currently, there is still a significant gap between the target and realisation of e-purchasing transactions through e-catalogues. PPK behaviour that is not optimal in implementing e-purchasing transactions through e-catalogue and low literacy of regulations are the problems faced, so it is important to change this behaviour. One of the theories used in analysing behaviour is the Theory of Planned Behavior (TPB), which in this case is enriched with perceived web quality, self-efficacy, attitude, subjective norms, and perceived behavioural control. This study aims to analyse the factors that influence purchase behavioural intention using e-catalogue. The alleged factors that can influence purchase behavioural intention are perceived web quality, self-efficacy, attitude, subjective norms, and perceived behavioural control. This research was conducted on 135 respondents who have transacted e-purchasing of laptop products through e-catalogue. Then selected by simple random sampling, namely taking samples from the population randomly without regard to
Keyword: e-katalog, perceived web quality, self efficacy, theory of planned behaviour

Judul: Analisis niat pembelian produk melalui Online Shop pada Mahasiswa dengan pendekatan Theory Of Planned Behavior
Abstrak: Perkembangan internet memberikan dampak positif pada bidang perdagangan yang ditandai dengan lahirnya online shop. Sekarang ini, banyak online shop yang berkembang di Indonesia dengan berbagai macam bentuk seperti sebagai media perantara yang mempertemukan penjual dan pembeli di dunia maya. Tujuan penelitian ini adalah menganalisis pengaruh sikap terhadap perilaku, norma subjektif, dan kontrol perilaku yang dipersepsi terhadap niat pembelian di online shop. Penelitian ini mengggunakan design cross sectional-study dengan contoh sebanyak 100 mahasiswa Pascasarjana (S2) IPB yang tercatat aktif sebagai mahasiswa tahun ajaran 2013/2014. Teknik penarikan contoh penelitian ini adalah purposive sampling yang diambil secara proporsional dari 4 fakultas terpilih. Hasil penelitian menunjukkan bahwa karakteristik contoh yang memiliki hubungan dan pengaruh terhadap variabel Theory of Planned Behavior (TPB) adalah pendapatan, intensitas akses internet, jumlah sumber informasi, dan jumlah alasan membuka website. Sikap terhadap perilaku, norma subjektif, kontrol perilaku yang dipersepsi, dan niat pembelian saling berhubungan dan memengaruhi sesuai yang dihipotesiskan. Jadi, dapat dikatakan bahwa penelitian ini sesuai dengan Theory of Planned Behavior., the birth of online shop. Nowadays, many online shops grow in Indonesia on many forms such as online media that bring together the sellers and buyers in virtual world. The purpose of this study was to analyze the influence of attitudes toward behavior, subjective norms, and perceived control behavior toward purchase intentions through online shop. This research used cross-sectional design with 100 postgraduate students (S2) of IPB who are active as a student of 2013/2014 academic year. Sampling technique of this study was purposive sampling taken proportionally from 4 selected faculties. The result showed that the sample’s characterisric who have correlation and influence toward the Theory of Planned Behavior (TPB) variables were income, internet access intensity, mount of information resources, and mount of reasons to access the website. Attitude toward behavior, subjective norm, perceived control behavior, and purchase intention were interconnected and influenced appropriate with the hyphotesis. So, it can be said that this study was consistent with TPB
Keyword: Niat pembelian, Online shopping, Theory of Planned Behavior

Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
Keyword: