Judul: Community-Based Flood Disaster Risk Mitigation Strategy on the Sugi River Banks, Tarempa Village, Siantan District.
Abstrak: SYARIF AHMAD. Community-Based Flood Disaster Risk Mitigation Strategy on the Sugi River Banks, Tarempa Village, Siantan District. Supervised by YUSMAN SYAUKAT and A. FAROBY FALATEHAN. Title of this research is "Community-Based Flood Disaster Risk Mitigation Strategy on Sugi River Banks, Tarempa Sub District, Siantan District, Anambas Islands Regency". The aim of this research is to identify disaster risk reduction efforts; Assessing community perceptions of flood disaster management and formulating community-based disaster risk reduction strategies. The research show that community empowerment programs/activities have been implemented, but not adequate due to limited human resources and lack of budget allocation. The strategies formulated in this research include: (1) Disaster Resilient Villages (DESTANA), (2) Disaster Risk Reduction Forum (PRB), and (3) Community-Based Reforestation. This research uses Analytical Hierarchy Process (AHP) method, from the results of the assessment DESTANA has the highest score: 0.715, the PRB forum scores: 0.217 and Community-based Reforestation scores: 0.068. DESTANA was chosen as the highest alternative because it accommodates a wide range of programs/activities for the preparation and implementation of community-based flood disaster mitigation strategies. The Government along with the community need to formulate organized and sustainable action plan by using local wisdom to mitigate flood disasters. Pentahelix stakeholders need to make joint efforts to rehabilitate hydrological functions in river bank and water catchment areas.
Keyword: Persepsi, strategi mitigasi, berbasis masyarakat

Judul: Perencanaan Lanskap Berbasis Mitigasi Banjir di Kecamatan Jatiasih Kota Bekasi
Abstrak: Banjir merupakan suatu fenomena alam yang sering terjadi di Indonesia. Bencana ini terjadi akibat kelebihan air yang tidak tertampung lagi oleh jaringan drainase sehingga membuat genangan yang merugikan. Salah satu daerah yang sering terkena banjir adalah Kecamatan Jatiasih. Oleh karena itu diperlukan perencanaan lanskap berbasis mitigasi banjir di Kecamatan Jatiasih, Kota Bekasi. Tujuan dari penelitian ini adalah meminimalisir dampak yang disebabkan oleh banjir. Metode yang dilakukan pada penelitian ini ada 5 tahap, yaitu tahap persiapan, inventarisasi, analisis, sintesis, dan perencanaan. Analisis yang dilakukan adalah analisis legalitas, kerawanan bencana banjir, kerentanan terhadap bencana banjir, dan risiko bencana banjir. Hasil analisis menyatakan bahwa Kecamatan Jatiasih didominasi kerawanan sedang sebesar 38,10%, kerentanan sangat tinggi sebesar 59,44%, dan berisiko tinggi terhadap bencana banjir sebesar 40,48%. Berdasarkan hasil analisis tersebut selanjutnya dikembangkan konsep perencanaan dengan konsep dasar mitigasi bencana banjir secara alami. Konsep ini kemudian dikembangkan menjadi rencana lanskap. Rencana lanskap disusun berdasarkan rencana tata ruang, aktivitas, evakuasi, fasilitas, sirkulasi, dan vegetasi., Flood is a natural phenomenon that occurs frequently in Indonesia. This disaster occurred as a result of excess water that was no longer accommodated by the drainage network, thus creating an adverse puddle. One area that is often affected by annual floods is in Jatiasih District. Therefore, a landscape planning based on flood mitigation is needed in Jatiasih District, Bekasi City. The purpose of this research is to minimize the impact caused by flooding. The method used in this study consists of 5 phases starting from preparation, inventory, analysis, synthesis, and landscape planning. The analysis carried out is sensitivity analysis, analysis of vulnerability, and flood risk analysis. The results of the analysis stated that Jatiasih District is dominated by medium sensitivity of 38.10%, very high vulnerability of 59.44%, and high risk of flood disaster of 40.48%. Based on the results of the analysis then developed a planning concept with the basic concept of natural flood disaster mitigation. This concept was later developed into a landscape plan. Landscape plans are prepared based on spatial plans, activities, evacuation, facilities, circulation, and vegetation.
Keyword: flood, mitigation, landscape planning

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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