Judul: Physiological Responses to Water Misting Using Water Sprinkler on Dairy Cattle
Abstrak: Peternakan sapi perah di dataran rendah dengan iklim tropis memerlukan rekayasa mikroklimat agar ternak berada pada Temperature Humidity Index (THI) yang mendekati zona nyaman sehingga produktivitas sapi perah meningkat. Penelitian ini bertujuan mempelajari pengaruh pengabutan air dengan sprinkler water terhadap mikroklimat kandang dan respon fisiologis sapi perah. Penelitian dilakukan pada tiga ekor sapi perah selama lima hari di Kandang Sapi Perah J’rami Farm, Desa Kebon Pedes, Kota Bogor. Pengambilan data mikroklimat dan respon fisiologis dilakukan sebelum dan sesudah pengabutan air pada siang hari selama satu jam. Metode analisis yang digunakan adalah uji-T berpasangan untuk variabel mikroklimat kandang dan respon fisiologis, serta Two Way Anova untuk mengetahui perbedaan suhu permukaan tubuh. Hasil penelitian menunjukkan bahwa perlakuan sebelum dan sesudah pengabutan air pada siang hari berbeda nyata (P<0,05). Hasil perlakuan pengabutan air mampu memperbaiki kondisi mikroklimat kandang dan respon fisiologis sapi perah yang ditandai dengan penurunan nilai THI, frekuensi denyut jantung, frekuensi pernapasan, suhu rektal, dan suhu permukaan tubuh., Dairy farming in the lowlands with tropical climate requires microclimate engineering, so the cattleshed are at Temperature Humidity Index (THI) which is close to the comfort zone and the productivity of dairy cattles increases. This study aims to study the effect of misting water with sprinkler water on the cattleshed microclimate and the physiological response of dairy cattles. The study was conducted on three dairy cows for 5 days located at the J'rami Farm Dairy Cattle, Kebon Pedes Village, Bogor City. Microclimatic data collection and physiological response were carried out before and after the misting water during the day for one hour. The analytical method used was a paired T-test for cattleshed microclimate and physiological response variables, and Two Way Anova to determine differences in body surface temperature. The results showed that the treatment before and after misting water during the day was significantly different (P<0.05). The results of the misting water treatment were able to improve the cattleshed conditions and the physiological response of dairy cattles which was marked by a decrease in the value of THI, heart rate frequency, respiratory frequency, rectal temperature, and body surface temperature.
Keyword: Mikroklimat, pengabutan air, respon fisiologis, sapi perah, sprinkler water

Judul: Physiological Responses with Water Misting using Water Sprinkler on Beef Cattle
Abstrak: Sapi pedaging merupakan jenis sapi yang dimanfaatkan dagingnya untuk pemenuhan protein hewani di Indonesia. Permasalahan yang dihadapi Indonesia adalah rendahnya produktivitas sapi. Peningkatan produktivitas sapi pedaging dapat dilakukan dengan cara membuat sapi berada pada zona nyaman dengan melihat respon fisiologis dari sapi tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh pengabutan air terhadap respon fisiologis sapi pedaging dan mikroklimat kandang. Rancangan yang digunakan adalah uji-T berpasangan untuk variabel respon fisiologis dan mikroklimat kandang dengan melakukan sebanyak 5 kali ulangan dan Rancangan Acak Lengkap untuk mengetahui perbedaan antara suhu permukaan tubuh. Perlakuan terdiri dari sebelum pengabutan air dan sesudah pengabutan air. Hasil penelitian menunjukan bahwa perlakuan pengabutan air pada siang hari berbeda nyata (P<0,05) terhadap peubah suhu kandang, kelembaban kandang, temperature humidity index, suhu rektal, frekuensi pernapasan, dan frekuensi denyut jantung. Pengabutan air pada siang hari menurunkan variabel mikroklimat kandang dan sapi yang diukur hingga mendekati zona nyaman dan nilai faal sapi., Beef cattle is the type of cow that is commonly utilized for its meat to fulfill animal protein in indonesia. The problem facing Indonesia is the low productivity of cattle. The increase of productivity of cattle producer can actually be done by relocating the cattle towards the comfort zone by seeing the physiological response. The purpose of this research is to find out the misting of water towards its effect on the physiological response and the microclimate of the cattleshed. The design used was a paired T-test for physiological and microclimate response variables with 5 replications and a completely randomized design to determine the difference between body surface temperatures. The treatment consisted of before water misting and after water misting. The results showed that treatment of misting water in the afternoon was significantly different (P<0.05) on the variables of cage temperature, humidity, temperature humidity index, rectal temperature, respiratory frequency, and heart rate. Water misting in the afternoon in cattle produced a good effect on all physiological response variables.
Keyword: Beef cattle, pen microclimate, physiological responses, water sprinkler

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
Keyword: