Judul: Pendugaan Bobot Badan Domba Rote Berdasarkan Ukuran Linear Tubuh
Abstrak: Bobot badan dapat digunakan sebagai salah satu standar dalam pemilihan bibit maupun bakalan yang unggul. Penelitian bertujuan menduga bobot badan domba rote berdasarkan ukuran linear tubuh berupa tinggi pundak, panjang badan, lebar dada, dan lingkar dada dengan menggunakan regresi linier. Penelitian ini menggunakan data sekunder yang berupa ukuran tinggi pundak, panjang badan, lebar dada, lingkar dada, dan bobot badan pada domba rote berjumlah 44 ekor yang terdiri dari 23 ekor jantan dan 21 ekor betina umur muda (I0) dan dewasa (I1-I3). Hubungan bobot badan dengan keempat variabel ukuran linear dianalisis menggunakan persamaan regresi linear. Hasil peneltian menunjukkan bahwa domba rote berumur muda (I0) memiliki koefisien korelasi antara bobot badan dengan ukuran linier tubuh yang lebih tinggi dibandingkan dengan kelompok umur dewasa (I1-I3). Berdasarkan hasil penelitian ini lingkar dada dapat dijadikan penduga bobot badan yang akurat pada domba rote dengan persamaan y=- 27,50+0,7146x untuk domba jantan muda, y=-21,85+0,7135x untuk domba jantan dewasa, y=-6,224+0,3178x untuk domba betina muda, dan untuk domba betina dewasa, yaitu y=0,757+0,2761x Kata kunci: analisis regresi linier, bobot badan, domba rote, ukuran tubuh linier, Body weight can be used as a standard in selecting superior seeds and progeny. This study examined the estimation of body weight in rote sheep based on linear body measurements such as shoulder height, body length, chest width, and chest circumference using linear regression analysis. This study used secondary data of shoulder height, body length, chest width, chest girth, and body weight of 44 Rote sheep consisting of 23 males and 21 females aged young (I0) and adults (I1-I3). A linear regression equation analyzed the relationship between body weight and the four linear size variables. The results showed that young rote sheep (I0) had a higher correlation coefficient between body weight and linear body size than the adult age group (I1-I3). Based on the results of this study, chest circumference can be used as an estimate of body weight in Rote sheep with the equation y=- 27,50+0,7146x for ram lamb, y=-21,85+0,7135x for the ram, y=-6,224+0,3178x for ewe lamb, and y=0,757+0,2761x for ewe. Keywords: body weight, linear body size, linear regression analysis, rote sheep
Keyword: analisis regresi linier, bobot badan, domba rote, ukuran tubuh linier

Judul: Estimation Of Body Weight Kisar Sheep with Linear  Regression Analysis Approach to Body Size
Abstrak: Bobot badan merupakan salah satu tolak ukur dalam menentukan pakan, produksi daging, penentuan harga jual beli benih dan pemilihan generasi ternak. Penelitian ini bertujuan untuk mengkaji hubungan lingkar dada, panjang badan, tinggi pundak, lebar dada, dalam dada dengan bobot badan domba kisar menggunakan rumus analisis regresi. Sebanyak 90 ekor domba kisar yang terbagi dalam 45 ekor domba jantan dan 45 ekor domba betina yang dikelompokkan berdasarkan umur dan jenis kelamin digunakan untuk menentukan pendugaan bobot badan domba kisar berdasarkan ukuran linear tubuh. Analisis data yang digunakan dalam penelitian ini menganalisis hubungan antara ukuran tubuh dan berat badan domba, rumus yang digunakan adalah analisis regresi linear dengan persamaan y = a + (b ± Sb). Rumus pendugaan bobot badan domba kisar melalui variabel ukuran linear tubuh menunjukkan hasil yang paling akurat dengan nilai korelasi tertinggi ialah pada domba kisar betina umur I0 dan umur I2 ialah variabel lebar dada, sedangkan pada domba kisar betina umur I1 nilai korelasi tertinggi terjadi pada variabel panjang badan. Sedangkan domba kisar jantan umur I0 variabel lebar dada memiliki nilai korelasi tertinggi, pada umur I1 nilai korelasi tertinggi terjadi pada variabel tinggi pundak, dan pada umur I2 variabel tertinggi yaitu pada panjang badan. Rumus pendugaan bobot badan pada domba kisar jantan dan betina menunjukkan hasil yang berbeda nyata pada nilai intersep dan koefisien regresinya, sehingga perlu adanya pemisahan rumus. Sebaran data yang diperoleh pada hasil penelitian ini berbentuk linear., Bodyweight is one of the criteria used to determine feed, meat production, buying and selling prices, and livestock generation selection. Using the regression analysis formula, this study will look at the relationship between sheep's chest circumference, body length, shoulder height, chest breadth, chest depth, and body weight. To estimate the body weight of the Kisar sheeps based on morphometric size, a total of 90 kisar sheeps were used, divided into 45 male and 45 female sheep and grouped by age and sex. The data in this study was analyzed using age equalization, and then linear regression analysis with the equation y = a + (b Sb) x was used to determine the relationship between body size and bodyweight of sheep. The chest width variable had the highest correlation value in female Kisar sheep aged I0 and I2, while the body length variable had the best correlation value in Kisar sheep aged I1. While the male Kisar sheep's variable chest width had the highest correlation value at age I0, shoulder height had the highest correlation value at age I1, and body length had the highest correlation value at age I2.
Keyword: Analysis regression, bodyweight, kisar sheeps, linear body size

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4