Judul: Breeding Techniques and Addition Mealworm to Asian Pied Starling Feed in Bird Captivity, IPB Dramaga
Abstrak: Upaya konservasi untuk meningkatkan populasi jalak suren dapat dilakukan melalui penangkaran. Penelitian ini dilakukan dengan tujuan mengidentifikasi teknik penangkaran, tingkat keberhasilan dan pengaruh pemberian ulat hongkong terhadap konsumsi dan aktivitas makan jalak suren. Penelitian dilakukan di Penangkaran Burung, Kampus IPB Dramaga pada Maret-April 2021. Metode pengumpulan data dilakukan melalui observasi, percobaan, wawancara, dan studi pustaka. Teknik penangkaran jalak suren di Penangkaran Burung, IPB Dramaga masih perlu perbaikan. Buku silsilah burung jalak suren telah berhasil ditelusuri. Jumlah populasi jalak suren terdiri dari 19 ekor indukan dan 12 ekor anakan. Tingkat keberhasilan penangkaran masih tergolong rendah dengan tingkat daya tetas dan perkembangbiakan induk tergolong sedang dan angka kematian tinggi. Pemberian ulat hongkong berpengaruh nyata terhadap penurunan jumlah konsumsi pakan utama dan frekuensi aktivitas makan berturut-turut dengan penambahan ulat hongkong (0, 20, 40 gram/ekor/hari) memiliki rata-rata jumlah konsumsi pakan utama berturut-turut 24,59 gram; 9,64 gram dan 9,39 gram, dan rata-rata frekuensi aktivitas makan tiap perlakuan berturut-turut sebanyak 104,76, 40,733 dan 19,1. Kata kunci : jalak suren, pakan, penangkaran, ulat hongkong, Conservation efforts increase asian pied starling population can be done through captivity. This research was conducted with the aim of identifying the captive technique, the succes rate and the effect of feeding mealworm on the consumption and feeding activity of the asian pied starling. The research was conducted at the Bird Farm, Dramaga Campus of IPB in March-April 2021. The data collection methods were carried out through observation, experimentation, interviews, and literature study. The technique of captive asian pied starling in Bird Farm, IPB Dramaga still needs improvement. The genealogy of the asian pied starling has been succesfully traced. The total population of asian pied starling consisted of 19 broods and 12 chicks. The succes rate of captive breeding is still low with the hatchability and breeding rates of the broodstock being moderate ansd the mortality rate is high. The feeding of mealworm significantly affected the decrease in the amount of main feed consumption and the frequency of feeding activity, respectively, with the addition of mealworm (0, 20, 40 grams/head/day) havig an average main feed intake of 24.59 grams; 9.64 grams and 9.39 grams, and the average frequency of eating activity for each treatment was 104.76, 40.733 and 19.1, respectively. Key words : asian pied starling, captivity, feed, mealworm
Keyword: Asian Pied Starling, Captivity, Mealworm, Feed

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