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Perpustakaan STIKOMP Surabaya
Jurnal Gematika

Volume 9 Nomor 1, Desember 2007
ISSN : 1411-2094


REKAYASA SISTEM KOGNITIF BERBASIS MULTI-AGEN: PENDEKATAN PENALARAN BERBASIS KASUS
Oleh : (1) Nur Ulfa Maulidevi, dkk
Abstraksi :
Abstract: Cognitive system modeling first introduced by psychology researchers. Unfortunately, the model has not been sufficient in supporting computer based problem solving. For that reason, artificial intelligence tries to propose a computational model of cognitive system. The main purpose of the computational model is to support human in solving complex problems, especially problems that involve large number of data, uncompleted data, and problem solving that requires systematic approach as human does. This research proposes an engineering of such multiagent based cognitive system, which employs case based reasoning as imitation of human reasoning to maintain the knowledge base.

Keywords: Cognitive System, Engineering, Multiagent, Case-based Reasoning, Knowledge



SKEMA ASYMMETRIC WATERMARKING BERBASISKAN UJI KORELASI
Oleh : (1) Rinaldi Munir, dkk
Abstraksi :
Abstract: Asymmetric watermarking scheme enable one can detect public watermark. Watermark detection doesn't need secret key or original multimedia data. Watermark detection done by doing correlation test between public keys and data multimedia tested. Usually scheme, private key is watermark inserted; public key is public key that correlated with private watermark. In this paper presents asymmetric watermarking scheme concept that based on correlation test, and continue with review some asymmetric watermarking proposals that already publish.

Keywords: Asymmetric Watermarking Scheme, Secret Key, Public Key, Correlation Test



IQMS PENINGKATAN DERAJAT KONKURENSI EKSEKUSI QUERY
Oleh : (1) Benhard Sitohang
Abstraksi :
Abstract: Divide Query (Q) to primitive as much as we can do, and alocated sub-query(sQ) to every sQ on exact location where data found, as Integrated Query Management System (Parallel Execution Control of Sub-Query of Database on Distributed System) (IQMS) based. In this paper will be explained the result of evaluation some Qs become sQ, and observe the rate of concurent excecution that may be done on IQMS, according to system configuration distribution data base used (3 computer: 1 system controller and execution location, and 2 execution locations), by obsserving data location.

Keywords: Distibution Data Base, Relationship Operator, Query, Concurent Execution, Local Network Computer



PROTOKOL CONCURRENCY CONTROL PADA REAL-TIME DATABASE SYSTEM
Oleh : (1) Kuspriyanto, (2) Rusdi HS, (3) Hartanto
Abstraksi :
Control Concurrency on RTDBS more complex than in conventional database system. Besides guarantee database consistency, on RTDBS control concurrency can support transaction deadlines. Mean while validities and value of data item change depend on time. Conventional control concurrency algorithm can be divided to two groups: Pessimistic Concurrency Control (PCC) and Optimistic Concurrency Control (OCC). PCC prevent conflict between transactions executed while OCC overcome between transactions after that transaction executed that restarted in conflict happened. These algorithms have weakness if applied in RTDBS that gives tight time on transaction execution because as a parameter is number of transactions done before deadlines, not only number of concurrency maximum and throughput. To overcome those two algorithms weakness some researches done. Between results modifications is speculative concurrency control and Hybrid concurrency control for the Nested model. But between alternatives there are some weaknesses, so it needs development for better control concurrency for RTDBS.

Keywords: RTDBS, PCC, OCC, Hybrid Concurrency Control, Nested Model



PENGHAMPIRAN HEURISTIK POLA POTONG DUA DIMENSI DALAM OPTIMASI PEMANFAATAN KAYU
Oleh : (1) Budisantoso Wirjodirdjo
Abstraksi :
Main problem encountered by woods industrial is how can maximize the used of woods. A lot methods done like "Rough Mill", that is main process in cutting woods that change board from log or rectangle become components according last product. In this process gives a lot results that absolved outgo in production process. Right disposition of component or right working tool on board result of sawing should properly discard woods should minimize and gives high income contribution. The more stock variations got from cutting log because dimension and type of grades always change cause cutting done by estimation or intuition. By putting right position of cutting woods on each peace of woods used heuristic approach. This method can choose woods not only depend on right dimension but also match to board grade. The result in parquet flooring case study saves 6.23% the used of board.

Keywords: Woods, Production Process, Cutting Log, Board, Parquet Flooring



SISTEM PENUNJANG KEPUTUSAN PEMILIHAN METODE/ALAT KONTRASEPSI
Oleh : (1) Dedi Trisnawarman, (2) Winny Erlysa
Abstraksi :
To choose method or contraception tool is not easy because the effect doesn't known before using it. There isn't any method or contraception that fit for any body, each body difference so it's need exact skill to understand more or less of method or contraception. In decision support system one will can get help in choosing the right methods or contraception. This system consists of: home module, login module, article module, DSS module and calendar module. System designed using MySql for database server, PHP as programming language, Macromedia Dream-weaver MX for website designed and Apache as web server. Evaluation of system designed using prototyping.

Keywords: Contraception Tool, DSS Module, Dream-Weaver MX, PHP, Calendar Module



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Telp. +62.31-8721731 ext. 214
Email : ppm@stikom.edu
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