Judul: Decision Support System for Rehabilitation Bond of Mining Area
Abstrak: Mining is an effort to remove in situ minerals resources, which is in exploitation stage that employ surface mining method is critical, yet mostly close to huge spatial opening, therefore suitable planning and operation is required to synchronize both of economical and environmental interests. Due to the prudent principle of the Government on a mining company, by regardless its principal and scale, the company is obliged to insure any spatial opening during their operation period by allocating appropriate fund in a certain Bank, as Reclamation Bond. Determining the Reclamation Bond needs both skill and expertise, otherwise it would consume time, even perfunctorily. Dealing with the necessity of Reclamation Bond assessment tool, this study attempted to develop a decision support system (DSS) approach to support fast and objective problem solution for evading disputability. The objective of this project is to develop a Mining Rehabilitation Bond System, which can provide the additional tool for the Government as Decision Support System to evaluate any company planning concerning cost estimation either suitable or not to be agreed with, determining adequate amount direct cost and indirect cost and emphasizing mine stakeholder awareness of any decision support related to cost of mining reclamation activity The Mining Rehabilitation Bond System is designed to support decision making, in order to minimize DSS implementation, data base manipulation through Visual Basic programming language. Beside direct cost analysis and indirect cost analysis, there is also manual analysis to perform additional data for structure demolition calculation and earth moving activities. The main focus of this system design is to estimate the amount of escalation per year that have to meet mining company’s reclamation cost planning. Based on the result, the combination of DSS Tool and reclamation formula can produce application system for rehabilitation bond. This calculation system is used to evaluate Reclamation Bond for 5 (five) years and annual reclamation cost based on direct and indirect cost of reclamation activity. This application tries to attempt evaluating system of mining company’s reclamation data. The application system has several weaknesses such as haul distance and grade consideration that should be measured manually, need socialization to mining company association and never published yet. The Mining Rehabilitation Bond System still needs to be tested for knowing its performance including its database system through several data from company (KK, KP and PKP2B) and the calculation of haul distance and grade of equipment needs digital input using spatial approach or digital map digitizer.
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Judul: Development of Wet Muck Monitoring Information System at PT Freeport Indonesia’s Grasberg Block Cave Mine
Abstrak: Ore mining at PT. Freeport Indonesia (PTFI)’s Grasberg Block Cave (GBC) underground mine using the block caving system has potential wet muck hazard that can cause casualties, property loss and production disruption due to its ore position which is below the Grasberg open pit. The wet muck classification and slides occurrence as well as the result of their analysis need to be standardized and recorded to predict the occurrence of wet muck slide in the future. For this reason, it is necessary to build an information system as one of the hazard mitigation efforts. The objectives of this research are (1) to identify the profile / characteristics of wet muck monitoring, (2) to analyze the requirements and specifications of wet muck monitoring information system, and (3) to develop a prototype of wet muck monitoring information system. This research was conducted in 7 stages using the System Development Life Cycle (SDLC) methodology with prototyping approach. The first stage is to identify the profile / characteristics of wet muck monitoring through literature studies, in-depth interviews and discussions with technical experts involved in monitoring. The second stage is requirements and specifications analysis of the required monitoring system using fit & gap analysis and feasibility study methods. The third stage is system analysis using data flow diagram (DFD). The fourth stage is system design including database design using Entity Relationship Diagram (ERD), process design and user interface design. The fifth stage is development of system information prototype based on proposed system and new business process. The sixth stage is testing the prototype using black box testing method. The seventh stage is user interface usability and ease of use evaluation using System Usability Scale (SUS) method. The results showed that the wet muck monitoring information system requires four functions which include (1) data retrieval on the field, with mobile-based application as the solution, (2) data storage to a centralized database system, with MS SQL Server based geoscience application as the solution, (3) reporting and data analysis tools, with VBA MS Excel as the solution, and (4) spatial information visualization, with web-based Geographic Information System (GIS) as the solution. The prototype testing result showed that system functionality can run well as expected, meanwhile, the usability evaluation with final score 84.46 as the result shows that it has an excellent level of acceptance for respondens as users
Keyword: Geographic Information System (GIS), Mobile Application, Underground Mine, System Development Life Cycle, Prototyping

Judul: Neraca kehidupan parasitoid telur Trichogrammatoidea  armigera Nagaraja  Hymenoptera:Trichogrammatidae)  pada beberapa suhu yang berbeda
Abstrak: Neraca kehidupan dari T. armigera denagn inang Corcyra cephalonica pada suhu 20 ⁰C, 25 ⁰C, 27 ⁰C, 30 ⁰C dan 32 ⁰C telah dilakukan di laboratorium. Tujuan penelitian ini adalah untuk mengetahui pengaruh suhu terhadap biologi dan perkembangan populasi parasitoid telur T. armigera dalam pembiakan massal di laboratorium. Penelitian dilakukan di Laboratorium Bioekologi Parasitoid dan Predator, Jurusan Hama dan Penyakit Tanaman Fakultas Pertanian, Institut Pertanian Bogor, mulai April sampai Desember 2001. Perbedaan suhu selama perkembangan parasitoid dianalisis dengan menggunakan Rancangan Acak Lengkap (RAL). Pengaruh perlakuan terhadap neraca kehidupan parasitoid diuji dengan menggunakan uji Tukey pada taraf kepercayaan 95%.
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