Judul: Sistem Perekomendasi Wisata Alam di Kabupaten Bogor Berbasis Mobile Menggunakan Metode Item-Based Collaborative Filtering
Abstrak: Bogor Regency is one of regions that has a high chance and tourist attraction. Beside a strategic location, Bogor Regency also has many beautiful natural tourism. The lack of information makes the tourists don’t know and visited natural tourism in Bogor Regency. Therefore we need a system of the recommenders. This study was conducted to establish the recommender systems Bogor Regency natural tourism which is expected to provide reference to travelers who want to / will visit Bogor Regency. The system is built with the recommenders using item-based collaborative filtering and the Android platform. The recommenders system is able to display a list of nature tourism with the description based on recommendations from the user.
Keyword: Bogor Agricultural University (IPB), recommender system, natural tourism, collaborative filtering

Judul: A development of mobile recommendation systems by spatial data ecotourism
Abstrak: Recommender System (RSS) is one of the techniques of Customer Relationship Management (CRM) strategy, in the form of software tools and techniques that can provide recommendations to user. This system is a model of an application from the observation of the situation and the wishes of the user. RSS can provide advice to the user through the process and decision support systems can provide explanations and advice that can help users find what they need or preferably item made in the form of a system. Therefore, this system needs a method of making appropriate recommendations in order to provide appropriate recommendations to user desire, as well as helping to facilitate the user for making the right decision. This research has two main objectives, which are: 1) to develop a mechanism and the algorithm recommender system using the CARS method, 2) build a mobile application recommender system for eco-tourism object location based on user profile. While the scopes of this research are: 1) the method used in this study is CARS method, 2) the application is made on the Android mobile environment. The data will be used in this research are spatial data. Spatial data is a reference to the position data, objects and relationships among the earth in space. Spatial data used in this study is vector data that provide position information based on the data points by taking the case of ecotourism object in Bogor. Ecotourism is one of the tourism sectors that can help the economy. Ecotourism is a form of tourism that focuses on rural culture as a tourist attraction. Dynamic application for ecotourism RSS is not existed at this time. Based on the existing results, information about ecotourism is sites and blogs that have static information. The application of RSS applications in mobile devices has not been much developer who develops applications for this particular case study ecotourism is becoming challenge in this study. Other challenges were conducted in this research is how to determine the appropriate method for the manufacture of mobile applications based on RSS which has dynamic user profiles. Mobile devices are now widely used in various circles of society and the development of mobile applications for the software and hardware equipment continues to move dynamically in accordance with the movement of increasing need of user. The method in this application is context-aware recommender systems (CARS). Therefore, with this mobile-based recommender system can help promote ecotourism and simplify recommendations for traveler user with location information, direction and other information about ecotourism. Besides that, mobile-based recommender system is a more dynamic, iterative, efficiently, fast and can recommend information objectively.
Keyword: context aware recommendation, ecotourism, recommendation systems, spatial data, user profile

Judul: Pembuatan Darih Rosin Maleat Secara Langsung Dari Getah Pinus Dan Aplikasinya Pada Kertas
Abstrak: Darih rosin (rosin tersabunkan) adalah rosin yang paling umum dan paling banyak digunakan dalam industri kertas sebagai bahan sizing yang berfungsi untuk menahan penetrasi cairan. Selama ini rosin tersabunkan merupakan hasil reaksi penyabunan antara rosin berupa residu penyulingan getah pinus dengan natrium hidroksida atau natrium karbonat. Sabun rosin maleat memiliki nilai kadar air, rosin total, dan rosin terikat yang lebih tinggi dibandingkan sabun rosin tanpa fortifikasi, sedangkan nilai rosin bebas dan fraksi tak tersabunkan lebih kecil. Dengan demikian darih rosin dapat juga dibuat langsung dari getah pinus, dengan mereaksikan getah pinus dengan anhidrida asam maleat, kemudian campuran tersebut disabunkan dengan natrium hidroksida. Berdasarkan pernyataan diatas, proses produksi ini mampu menyingkat proses sehingga menekan biaya dan energi yang digunakan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh persentase asam maleat yang ditambahkan ke dalam getah pinus terhadap kualitas darih rosin maleat dan mutu kertas. Untuk setiap perlakuan, getah bersih sebanyak 80 g dimasukkan ke dalam erlenmeyer asah 250 ml. Ke dalam erlenmeyer ditambahkan masing-masing sebanyak 0%, 2%, 4%, 6%, 8%, 10%, 12% anhidrida asam maleat dari berat getah. Campuran diaduk dan setelah homogen ditambahkan 4,27 g NaOH yang dilarutkan dalam air sebanyak 8,43 g air. Aduk sampai homogen, kemudian ke dalam erlenmeyer ditambahkan 40 ml air suling. Proses selanjutnya adalah penyulingan selama ± 3 jam yang bertujuan untuk memisahkan rosin dengan terpentin. Setelah seluruh terpentin tersuling, proses penyulingan dihentikan selanjutnya produk dituangkan ke dalam wadah aluminium yang telah disiapkan. Setelah didapatkan darih rosin fortifikasi yang optimum dari analisis statistik selanjutnya dilakukan aplikasi sebagai sizing kertas (TAPPI T-205). Rendemen diperoleh dari persentase pebandingan antara bobot darih rosin yang dihasilkan dengan bobot getah bersih. Uji kualitas darih rosin maleat mengacu pada TAPPI T 628 cm-01. Pengujian katahanan sobek, lipat dan ketahanan daya serap air secara berurutan mengacu pada TAPPI T414 cm-04, TAPPI T423 cm-98, dan TAPPI T441 cm-04. Pembuatan darih rosin maleat secara langsung dari getah dengan penambahan asam maleat 0%-12% menghasilkan rendemen berkisar antara 88,45- 91,22% dan hasil uji kualitas darih rosin menghasilkan kadar rosin bebas berkisar antara 0,5654-0,5620%, kadar rosin total berkisar antara 72,59-84,01%, kadar rosin terikat berkisar antara 72,03-83,45%, kadar padatan berkisar antara 90,95- 92,81%, Alkali bebas 0%, dan derajat keasaman berkisar antara 9-5,5. Darih rosin maleat 4%, 6%, dan 8% hasil uji kualitas kertas diantaranya daya serap air, secara berurutan dari persentase penambahan asam maleat 4%, 6%, dan 8% yaitu 92,2; 98,4; dan 95,7 g/m2, indeks sobek 7,4; 8,1dan 7,5 mN.m2/g dan ketahanan lipat sebesar 21, 24, dan 24. Pembuatan darih rosin maleat secara langsung dari getah dengan penambahan asam maleat menunjukkan kualitas darih rosin yang lebih baik. Rosin bebas yang dihasilkan telah memenuhi SNI yang mensyaratkan nilai kadar rosin bebas <6% , kadar rosin total dan rosin terikat menunjukkan nilai kadar rosin total dan terikat metode pembuatan darih secara langsung dari getah lebih baik dibandingkan metode bilangan penyabunan, kadar padatan yang dihasilkan diatas 90%, dan derajat keasaman semakin meningkat menjadi asam. Darih rosin maleat 4%-8% dalam penggunaannya sebagai sizing kertas mampu meningkatkan kualitas kertas. Persentase panambahan asam maleat 4% telah memiliki kualitas yang optimum dalam penggunaan sizing kertas pertimbangan penghematan
Keyword: