Judul: Teknik penangkaran dan aktivitas harian mambruk victoria (Goura victoria Fraser, 1844) di Mega Bird And Orchid Farm, Bogor Jawa Barat
Abstrak: Victoria crowned pigeon (Goura victoria Fraser, 1844) is one of endemic bird species in Papua, which population had decreased in the natural habitat due to hunting activities. Ex-situ conservation through captive breeding/captivity is an alternative to sustain the bird population. Observation on it’s daily activities in captivity was expected to result in good captivity technique which would enable the preservation of it’s population and restocking of the species in their natural habitat. This research was aimed to study the captivity techniques, identify factors of success, and observe the daily activities of the victoria crowned pigeon. The research was conducted in Mega Bird and Orchid Farm (MBOF) located in Desa Cijujung Tengah, Bogor, West Java on June – July 2011. Instruments used include stationery, stopwatch, camera, interview guide, dry-wet thermometer, and measuring tape. Object of the research was victoria crowned pigeon in MBOF. Data taken during the research included the captivity technique and daily activities of victoria crowned pigeon in MBOF. Data collection methods employed in the research for the captivity technique were direct observation, literature study, and interview, as for the aspects of the daily activities was one-zero sampling method. The cage was classified a permanent maintenance cage with 40 m × 25 m × 5 m dimensions which made from wall, iron with + 5 cm in diameter, and ram wire for roof. Facilities provided in the cage were among other perch place, eating and drinking place, nesting place, and pond. The cage was regularly cleaned twice a day and sprayed with disinfectant once a month. Temperature in the cage was between 25 – 32oC with moist air ranges between 57 – 78%. The type of diseases suffered by the victoria crowned pigeon were CRD (Chronic Respiratory Disease), intestinal worms, and leg swelling. Technique of pairing, laying or hatchery setting, and native enlargement was naturally done by victoria crowned pigeon’s parent. Factors which support the success of captive breeding management in MBOF were (a) location of the cage which away far from noise and human disturbance; (b) the hygiene, safety, and care of the cage; (c) the feeding routine given every morning and evening; (d) provision of medication and vitamins on regular basis to maintain good health and prevent disease from attacking the birds in captivity; and (e) maintenance of genetic purity and avoidance of inbreeding occurenes. Type of behavior that can be used to distinguish the sex of the victoria crowned pigeon was dancing behaviour performed by male individuals.
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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: 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