Judul: Pengaruh suhu udara terhadap perkembangan pradewasa lalat rumah (Musca domestica)
Abstrak: The house fly (Musca domestica) is an insect that often be found in human habitat and acts as a transmitter of disease. This study is laboratory observatory that aimed to analyze the relationship between temperature and the survival rate and developmental period of immature house flies. The survival rate and developmental period of immature house flies were observed at temperatures of 16 ºC, 27 ºC, 31 ºC, 39 ºC and the environmental temperature as a control temperature. The results of observation showed the lowest immature survival rates occur at 16 ºC and the highest at the environmental temperature (26.53 ºC). The relationship pattern of temperature and survival rate and the rate of immature developmental form a quadratic equation. The results of data analysis showed the optimum temperature for the immature survival rate and the rate of immature developmental are 28 ºC. The pattern of temperature changes effect on immature developmental period differ from those on survival rate. The increasing of temperature caused the decreasing of immature developmental period form an exponential equation
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Judul: Pengaruh suhu terhadap perkembangan pupa lalat rumah musca domestica linn
Abstrak: Pengaruh suhu konstan terhadap perkembangan pupa lalat rumah, Musca domestica Linn, dievaluasi berdasarkan lamanya masa pupa serta prosentase keberhasilan eklosi. Sebanyak 1250 pupa ditempatkan dalam 25 pot pot plastik berukuran tinggi 3,5 Cm, garis tengah 3 Cm, tiap pot plastik berisi 10 pupa, dipelihara di dalam Environmental chamber pada lima tingkat suhu bertingkat masing-masing: 18°C, 21°C, 24°C, 27°C dan 30°C serta kelembaban relatif 80 persen. Setiap tabung plastik merupakan satu sampel, pa da setiap suhu diamati lima sampel, yang diulang sebanyak lima kali. Suhu berpengaruh sangat nyata terhadap periode pupa (P<0,01), peningkatan suhu menyebabkan periode pupa semakin singkat. Periode pupa dihitung dengan menetapkan Waktu Eklosi50 atau jumlah hari pengamatan sampai 50 persen pupa bereklosi. Pada suhu 18°C WE50 rata-rata 12.04 hari, pada suhu 21°C rata-rata 7,56 hari, suhu 24°C 4,04 hari, 27°C 4,0 hari dan suhu 30°C 3,24 hari. Rata-rata Waktu E- klosi50 pada suhu 18°C, 21°C terhadap suhu 24°C dan suhu 27°C serta terhadap suhu 30°C berbeda sangat nyata. Sedang kan perbedaan rata-rata Waktu Eklos150 antara suhu 24°C dan suhu 27°C terhadap suhu 30°C nyata. Hasil rata-rata antara suhu 24°C dan suhu 27°C tidak terdapat perbedaan yang nyata. - Dari analisa regresi diperoleh persamaan Y 71,4632 4,8653 X + 0,0867 x²; r = 0,99.
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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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