Judul: Kajian Stok Ikan Tembang (Sardinella fimbriata) di Perairan Selat Sunda yang Didaratkan di Pelabuhan Perikanan Pantai Labuan, Banten
Abstrak: Fringescale sardinella (Sardinella fimbriata) is one of the economically important fish resources found in the Sunda Strait waters. High economic value with the increasing demand of fish makes it as one of the main targets of capture. This research was conducted to determine the actual condition of the fringescale sardinella stock based on landed at Coastal Fishing Port of Labuan, Banten. The amount of the observed fish was 636 individuals with male sex ratio of 1:1.2 to the female. The fringescale sardinella had negative allometrik growth and female and male asymptotic length ( ) were 207.32 mm and 175.11 mm, respectively. Spawning season seems to be occurred in August and September. The mean size of female and male reach sexual maturity was 163 mm and 153 mm, respectively. Exploitation rate of the fringescale sardinella more than 50%, meaning that this fish has an over fishing and it seem has a growth overfishing due to caught fishes are still young more than 70%.
Keyword: Sunda Strait, growth, exploitation rate, stock assesement, fringescale sardinella

Judul: Aspek Reproduksi Ikan Tembang (Sardinella fimbriata Cuvier dan Valenciennes 1847) di Perairan Teluk Banten.
Abstrak: Fringescale sardinella (Sardinella fimbriata) has an important economic value and high levels of utilization. Indicated the availability of S. fimbriata decline in reproduction studies Karangantu so necessary for further management. The research was conducted in May-August 2012. Based on this research, it is known reproductive pattern S. fimbriata from Banten Bay. Total number of fish taken during the study were 765 individuals. Results showed that the sex ratio of male and female Fringescale sardinella unbalanced (0,7:1) with Chi-square test. Condition factor S. fimbriata ranged from 0,9248 to 5,8707. Fringescale sardinella female mature more rapidly than male fish gonads with mature gonads were first size of 179,4 mm (female) and 192,4 mm (male). Peak spawning season of Fringescale sardinella in Banten Bay waters allegedly occurred in May and late August. Reproductive potential of S. fimbriata high at 9 691-173 335 eggs. Egg diameter of S. fimbriata ranged from 0,0250 to 0,6250 mm with the spread mode from two types of spawning peaks with partial (partial spawner).
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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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