Judul: Teknik Penangkaran dan Perilaku Harian Jalak Putih di Mega Bird and Orchid Farm Bogor, Jawa Barat
Abstrak: Mega Bird and Orchid farm (MBOF) has succesfully bred Black Winged Starling. The purpose of this research were to identify the captivity technique applied by MBOF and describe the Black Winged Starling‟s behaviours. This research was done from 12th of September to 30th of November 2013. The observation was carried out on a pair of Black Winged Starling. The result showed that the captivity technique in MBOF which include caging, food provisioning, health keeping and reproduction aspect are managed carefully. The practice had resulted 71,4% of parental breeding rate, 83,4% of egg hatching rate and 17,3% of dead chicks rate. The behaviors that had been identified were investigative behaviour, chirping, feeding, preening, resting, moving, bathing, dancing and defecating. Rest and bath performed along with rising temperature, flying avoid was done as response due to care activity. The birds were not stressed out due to care activity although temperature and humidity change.
Keyword: daily behaviours., captivity technique, black winged starling

Judul: Teknik penangkaran dan aktivitas harian jalak bali (Leucopsar rotschildii Stresemann 1922) di penangkaran UD Anugrah Kediri Jawa Timur
Abstrak: Bali starling (Leucopsar rotschildii Stresemann 1922) is a popular species among people. Population of bali starling in the natural habitat had decreased due of hunting activities. It is necessary to the preservation through captive breeding. One important aspect is knowing bali starling activities, knowing activities from bali starling can monitoring health, diet and breeding. This research was aimed to study captivie breeding techniques, identify measures of success and observe the daily activities of the bali starling. The research was conducted in UD Anugrah located in Kediri East Java on June-July 2012. Instrument used include digital camera, stationery, tally sheet, interview guide, stopwatch, dry and wet thermometer and object of the research was bali starling and manager from UD Anugrah. The data of captive breeding techniques was analyzed descriptive, measures of success from UD Anugrah and daily activities were quantitative analysis. The kind of cage in UD Anugrah consisted of display cage, reproduction cage, solitary cage and incubator. Facilities provided in the cage were among other perch place and places to eat and drink. The cage was regularly cleaned once a day and sprayed with disinfectant once a month. Types of disease that had bali starling in UD Anugrah was diarrhea. Activity of captive breeding from UD Anugrah can be categorized success were reproduction level high (65%), moderate egg hatching rate (50%) and low mortality (25%). Socially also declared a success by involving the local community as a keeper and feed providers. There are 19 activities performed by bali starling in UD Anugrah. Type of activity that can be used to distinguish the sex of bali starling was nesting activity performed by female individual.
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Judul: Aproksimasi Fungsi Sinus dan Kosinus sebagai Kombinasi Linear dari Fungsi Eksponensial
Abstrak: Salah satu gagasan yang menarik dalam matematika adalah aproksimasi suatu fungsi oleh fungsi lain. Sebagai contoh, fungsi polinom dapat diaproksimasi menggunakan deret Taylor atau fungsi persamaan diferensial dapat diaproksimasi menggunakan deret Fourier. Adapun fungsi yang dapat mengaproksimasi fungsi lain salah satunya adalah fungsi eksponensial. Kemungkinan mengaproksimasi fungsi dengan kombinasi linear dari fungsi eksponensial dari bentuk eˣ, e²ˣ, ... dianggap sebagai perkembangan sejajar dengan gagasan Deret Taylor yang mengaproksimasi fungsi dengan kombinasi linear dari segi fungsi kuadrat. Fungsi sin x dan cos x digunakan sebagai target untuk menilai seberapa baik aproksimasi yang dilakukan oleh fungsi yang diberikan. Aproksimasi fungsi sinus dan kosinus menggunakan hampiran Taylor lebih akurat dibandingkan dengan aproksimasi menggunakan fungsi eksponensial.
Keyword: Aprosimaksi eksponensial, aproksimasi fungsi, aprosimaksi Taylor, fungsi eksponensial