Judul: Sistem informasi untuk melihat rute terpendek dan jalur angkot berbasis SMS
Abstrak: Telah banyak ahli dan orang-orang yang berkecimpung dalam bidang penyampaian informasi mencoba mengembangkan sebuah sistem yang memiliki fasilitas dan dapat membantu dalam menyampaikan informasi yang penting dengan cara yang mudah dan efisien. Short Message Service (SMS) sebagai salah satu teknologi yang paling banyak digunakan untuk berkomunikasi melalui media teks dengan tarifnya yang ringan sehingga SMS lebih efisien dan cepat dalam mengirim dan mendapatkan informasi. Teknologi SMS ini sangat cocok diterapkan dalam bidang-bidang yang membutuhkan sistem informasi real time. Pencarian rute terpendek dari titik asal ke titik tujuan pada graf sederhana yang terdiri dari satu atau sedikit titik (node) dapat dilakukan secara manual, bila terdapat banyak titik maka akan sangat kompleks dan rumit untuk mencari rute terpendeknya, karena itu digunakan algoritma Djikstra sebagai solusi. Penelitian ini bertujuan untuk mengembangkan suatu Sistem Informasi untuk mendapatkan informasi rute terpendek pada jalur-jalur yang dilalui oleh angkot beserta angkot yang melalui jalur tersebut dengan mengimplementasikan algoritma Djikstra. Sistem yang akan dibangun hanya dibatasi oleh jalur-jalur yang hanya dilalui oleh angkot-angkot di Kota Bogor. Data yang digunakan merupakan data spasial berupa peta dari nama-nama jalan yang ada di Kota Bogor. SMS Gateway digunakan sebagai penghubung antara telepon genggam dengan komputer untuk mengirim dan menerima pesan SMS dari dan ke dalam telepon genggam. Informasi mengenai rute terpendek akan ditampilkan dalam bentuk teks, yang berisi nama jalan yang bisa dilewati dan nomor angkot yang melewati jalur atau jalan tersebut.
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Judul: Penerapan Algoritme Dijkstra Pada Rute Angkot Bogor Berbasis Android
Abstrak: There are some problems dealing with angkot in Bogor. The problems are related to the complexity of route system and amount of angkot unit. In this research, information system was developed for guiding user in order to choose the most efficient route to reach the purpose location. The Dijkstra algorithme was employed to support the system in order to find the route that provide the shortest distance from the origin to the purpose location. The system was developed by using Java and XML programming language and evaluated by applying black box testing method. The evaluation results show that the system can succesfully meet all requirements, particularly providing the most efficient route of a certain location.
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Judul: Pengaruh Jumlah Bahan Pretanning dan Minyak Biji Karet (Hevea brasiliensis) Terhadap Mutu Kulit Samoa. Di
Abstrak: Animal hides or skins are the most valuable by product of the meat industry. Most of those hides are converted into leather by leather tanning process. Chrome based tanning is the most popular tanning process. At the chrome based tanning process, a lot of amount chrome are throw away into the environment that make a significant effect to the biological and ecological environment damaged. Due to concerns over the use and disposal of chromed tanned leather, the leather industry is now facing increasing scrutiny over its use of chrome as tanning agent. The use of non-chrome tannages has gradually become pre-eminent to producing leather, particularly in the European automotive leather markets. Chamois leather is one of leather product. It is produced from animal hides/skins by oil tanning process, usually with fish oil. High price and odour problems to the chamois leather that produced using fish oil motivate to do some research to solve that problems. Rubber seed oil is an oil that predicted can substitute fish oil. Pretanning process is needed to increase the oil penetration and protects the pelt from putrefying during oxidation periods (Khrisnan et al., 2005). Relugan GT 50 is the agent that used on this research. Relugan GT 50 is an aldehyde tanning agent, produced by BASF. This research was aimed to find out the effects of Relugan GT 50 concentration (offer) and rubber seeds (Hevea brasiliensis) oil to the chamois leather’s quality. Beside that, this research is also aimed to decide the best combination of the factors to produce chamois leather also to know the chamois leather characteristics. The preliminary research was carried out by analyzing the rubber seed’s kernel and eggshell as well as physico-chemical properties of the rubber seed oil. The main research was done by tanning the skin with Relugan GT 50 in concentrations of 1.5, 3.0 and 4.5% followed by rubber seed oil concentrations of 10, 20, and 30%. The experimental design used was completely randomize factorial design. The preliminary research shows that rubber seed’s kernel was 49% and rubber seed’s eggshell was 51%. The rubber seed’s oil characterstics were density of 0.94 (g/cm3), viscosity of 48,4 centistokes, colour of 2713 PtCo units, inodine value 113 g iod/ 100 g, peroxide value of 24 miliequivalent/1000 gram oil, acid value of 15 mg KOH/g oil and FFA content of 5.8%. The research shows that Relugan GT 50 concentration significantly affected shrinkage temperature (Ts) and pH; rubber seed oil concentration significantly affect the organoleptic properties of the leather. The optimum conditions for the tanning were Relugan GT of 3.0% concentration and 10% rubber seeds oil. The physical properties of the leather were shrinkage temperature of 75oC, thickness of 0.92 mm, tensile strength of 21.50 N/mm2, elongation at break of 144%, tear strength of 55.77 N/mm, water absorption of 266% (2 hours) and 299% (24 hours). The chemical properties were oil content of 2.5%, ash content of 1.2% and pH of 8. The organoleptic properties were softness of 7–8, colour of 8-9, and odour of 8-9.
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