Judul: Merino Sheep Resting Behavior Response to Different Airflow  Velocity
Abstrak: Domba merupakan salah satu hewan yang potensinya terus dikembangkan di Indonesia. Salah satu domba yang dikembangkan di Indonesia adalah domba merino, domba dwiguna yang dimanfaatkan daging dan wolnya. Akan tetapi, kenyamanan ternak seringkali terkendala oleh faktor lingkungan seperti suhu, kelembapan, dan kecepatan angin yang dapat menyebabkan cekaman panas dan perubahan tingkah laku pada ternak. Tujuan penelitian ini untuk mengkaji pengaruh kecepatan aliran udara terhadap respon tingkah laku istirahat domba merino guna memperbaiki manajemen lingkungan mikro pada kandang. penelitian dilakukan selama 30 hari (15 hari tanpa pemberian kipas angin (V0) dan 15 hari dengan pemberian kipas angin (V1)), menggunakan 6 ekor domba merino. Suhu dan kelembapan diukur setiap 1 jam menggunakan thermohygrometer digital mulai pukul 10.00-15.00 WIB setiap harinya. Kecepatan angin diukur dengan anemometer, sedangkan durasi dan frekuensi istirahat diamati menggunakan CCTV. Resiko heat stress yang dialami ternak diukur menggunakan rumus temperature humidity index (THI) untuk mengetahui klasifikasi heat stress pada ternak. Perhitungan perbandingan rata-rata tingkah laku istirahat domba digunakan rumus uji-t dengan bantuan software SPSS dan microsoft excel. Hasil penelitian menunjukan bahwa pemberian kipas efektif menurunkan suhu lingkungan dan THI pada ternak. Selain itu, penggunaan kipas dapat meningkatkan durasi istirahhat pada ternak (P<0,01)., Sheep is one of the potential animal that keep to be developed in Indonesia. One of the bred sheep in is used for its meat and wool. However, livestock's comfort is often constrained by environmental factors such as temperature, humidity, and wind velocity which cause livestock's heat stress and behavioral changes. The purpose of this study is to determine the effect of air flow velocity on the response of merino sheep's resting behavior in order to improve micro environment management in the cage. The study was conducted in 30 days (15 days without a fan (V0) and 15 days with a fan (V1)), using 6 merino sheep. Temperature and humidity were measured every 1 hour using a digital thermohygrometer starting at 10.00-15.00 WIB every day. Wind speed was measured by anemometer, while the duration and frequency of rest were observed using CCTV. The risk of animal's heat stress is measured using the temperature-humidity index (THI) formula to determine the classification of livestock's heat stress. Calculation the average comparison of sheep resting behavior used the t-test formula and support by SPSS software and Microsoft Excel. The results showed that giving a fan is effectively reducing environmental temperature and THI in livestock.In addition, the use of fan increase the duration (P<0,01) and decrease the rest frequency in livestock
Keyword: domba, kecepatan aliran udara, merino, suhu, tingkah laku istirahat, air flow speed, merino, sheep, rest behavior, temperature

Judul: The effect of shearing wool on sheep's behavior
Abstrak: Sheep are homeotherms or warm-blooded animals that can maintain their body temperature in a safe range, known as the thermoneutral zone, without making any impacts on their bodies. Environmental and genetic factors could affect the productivity of sheep, but the most influential is environmental factors. Temperature and humidity are some environmental factors that have a direct impact on animals. The purpose of this study is to analyze the effect of shearing wool on sheep's behavior. Ten sheep are classified into 2 treatment groups, shorn sheep (P) and unshorn sheep (TP) will be observed in the field laboratory of small ruminants, Faculty of Animal Science, IPB University for thirty days from February until March 2021. The results of this research show the effect of shearing was significant (P<0,05) on ingestive, drinking, agonistic, eliminative, resting, sleeping, caregiving, locomotion, standing and rumination behavior., Domba merupakan hewan homeoterm atau hewan berdarah panas yang mampu mempertahankan suhu tubuhnya pada kisaran tertentu, yang disebut zona termoneutral, tanpa menimbulkan dampak apa pun pada tubuhnya. Faktor lingkungan dan genetik dapat mempengaruhi produktivitas domba, namun faktor yang paling berpengaruh adalah faktor lingkungan. Penelitian ini bertujuan mengevaluasi pengaruh pencukuran wol terhadap tingkah laku domba. Penelitian ini menggunakan 10 ekor domba yang dibagi menjadi 2 perlakuan yaitu domba yang dilakukan pencukuran (P) dan domba tanpa pencukuran (TP) di Laboratorium Lapang Ruminansia Kecil, Fakultas Peternakan, IPB University dari Bulan Februari sampai Maret 2021. Hasil analisis menunjukkan bahwa pencukuran wol pada domba berpengaruh nyata (P<0,5) terhadap tingkah laku ingestive, minum, agonistic, eliminative, berbaring, tidur caregiving, locomotion, berdiri dan ruminasi
Keyword: behavior, humidity, sheep, temperature

Judul: Analisis dan Implementasi Certificate Authorities (CA) pada Public Switched Telephone Network (PSTN)
Abstrak: Secure Telephone Protocol has ability to authenticate involved party and keep the secrecy of the message sent over the protocol. The secrecy of the message archieved by using symmetric key cryptographic scheme, and authentication archieved using public key cryptographic scheme. One of several party involved in the protocol and hold an important function called Certificate Authorities or CA. CA responsible for generating public key pair for other party involved in the protocol. When CA generates public key pair, several primitive cryptographic scheme used for guarantee the security of the key. Two of them are hash function SHA-1 and El-Gamal public key scheme embedded in Digital Signature Algorithm scheme. The prototype implementing the scheme above developed using Java programming language with JCE addition from Bauncy Castle. The analysis towards implemented prototype indicates that the prototype still has some flaws to be implemented in real world.
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