At the beginning of the semester, the study program must arrange a lecture schedule. Among the problems faced is when there are students who take courses at once in one semester. By identifying the course as a knot, the schedule arrangement can be overcome by dyeing the vertex of the graph, by applying the Welch-Powell algorithm. Graph coloring results are neighboring nodes given different colors. With this method can be determined lecture schedule so that no clashing occurs. And courses that can be done simultaneously, that is, the node with the same color.Keywords: Lecture Schedule, Graf Staining, Welch-Powell Algorithm

This study aims to solve the problem of lack of creative thinking ability used sinektik learning model. This research is a quasi-experimental design with a control group of non-equivalence. The subjects in this study were students of MTs Husnul Khotimah Kuningan VIII class are divided into two groups: the experimental group as many as 31 students and a control group as many as 33 students. The experimental group get sinektik learning model, while the control group getting conventional learning models. Collecting data using the research results in the form of test instruments of creative thinking ability. Data were analyzed quantitatively and qualitatively. Data pretest and posttest of creative thinking ability processed with SPSS 16 for windows. The results showed that an increase in creative thinking abilities of students who study mathematics learning model sinektik better than students who use conventional learning model.                                                                                                          Keywords: sinektik learning model, the ability creative thinking.

The aim of this study is to derive the approximation solution of the non-autonomous logistic equation with a non-constant carrying capacity. The solution is found via predictor-corrector method (Adams-Bashforth-Moulton method, Milne method and Hamming method). The approximation solution that obtained, then, is compared to the exact solution. The results show that, for small step size, the approximation solution approximate the exact solution is in good agreement.

Zakat is a certain part of the property that must be issued by every Muslim if it has reached the specified conditions. As one of the pillars of Islam, Zakat is paid to be given to those who are entitled to receive it. Zakat is managed by an official body established by the government, namely the National Amil Zakat Agency (BAZNAS). BAZNAS was formed by the government based on the Decree of the President of the Republic of Indonesia No. 8 of 2001 which has the task and function of collecting zakat, infaq and alms at the national level. BAZNAS has an extensive network spread across 34 provinces and in 463 regencies and cities throughout Indonesia. BAZNAS Majalengka is one part of the central BAZNAS network that is always committed to managing and collecting zakat, infaq and alms from the community. BAZNAS Majalengka in the process of collecting zakat, infaq and alms is still using the direct transaction method. The direct transaction method has several problems including the giver and recipient of zakat must meet in person, the recording process must be carried out in detail, limited distance and time, and the recording process has not been digitally computerized. A websitebased application is needed that can make it easier for everyone to make zakat transactions to BAZNAS Majalengka. With this application, it is expected to increase zakat income to BAZNAS Majalengka and can facilitate zakat giving transactions. This application is designed using the Rational Unified Process (RUP) system development method. The RUP method consists of four stages, namely: Inception, Ellaboration, Construction, and Transition. In the transaction process for giving zakat, a QR Code is used by applying the Cipher Block Chaining algorithm. The result of this research is a website application for giving zakat.

Artikel ini meninjau masalah dinamika perilaku merokok. Metode perturbasi homotopi diterapkan untuk menghitung solusi sistem persamaan differensial pada masalah tersebut. Hasil ini kemudian dibandingkan dengan hasil dari metode numerik. Hasil menunjukkan bahwa solusi metode perturbasi homotopi cenderung menghasilkan kecocokan yang baik terhadap solusi numerik pada beberapa selang waktu. Kata Kunci: metode perturbasi homotopi, sistem persamaan differensial, model merokok