Browsing by Author "Saleh, Khairul"

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    The Application of Led Lights (Light Emitting Diode) as Replacement of Kerosene Pressure Lamps at Stationary Lift Nets in Sungsang Estuary, South Sumatera
    (2016-03-30) Fauziyah; Supriyadi, Freddy; Saleh, Khairul; Hadi; Suteja, Yulianto
    Kerosene pressure lamps used in stationary lift nets in Sungsang Estuary South Sumatra as a tool for catching anchovies. The high price of kerosene is the main considerations for conducting research to find a replacement of kerosene pressure lamps. The purpose of the study were 1) analyze the characteristics of catchment in stationary lift nets using kerosene pressure lamps and LED lights, and 2) analyze differences catches in stationary lift nets using kerosene pressure lamps and LED lights. The research was conducted on new moon (dark condition) in July 2013 by experimental method in stationary lift nets that using kerosene pressure lamps and LED lights. Both of them operated 4 times in each trip. The results of this study indicated that the use of kerosene pressure lamps and LED lights not statistically significantly different for the anchovy, squid, other fishes catches, and total catch. Thus technically, LED light can be used as a substitute for kerosene pressure lamps in stationary lift nets.
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    Pertubasi Sistem Persamaan Diferensitak Linear
    (2015-03-16) Saleh, Khairul; Gemawati, Sri; Agusni
    Pada tulisan ini diselidiki kestabilan suatu sistem pertubasi dari suatu persamaan diferensi tak linear yang antara lain ditunjukkan bahwa jika h-stabil sistem persamaan diferensi tak linear tersebut maka sistem pertubasi yang diberikan akan h-stabil asimtotik ditambah dengan beberapa syarat dari pertubasi yang diberikan. Sistem persamaan tak linear tersebut h-stabil dalam variasi jika sistem variasionalnya h-stabil. Sebelumnya ditunjukkan pula bahwa jika solusi nol sistem linear homogen yang diperoleh dari pelinearan sistem tak linear stabil asimtotik seragam, maka solusi nol dari sistem tak linear tersebut stabil eksponensial