Judul: Effect of Sheep Farming Wasre to Chemical Characteristics of Family Clean Water Source in Two Villages with Different Topography in Bogor Prefecture
Abstrak: Sheep farming waste especially dung, urine and feed residues mixed with them have some potential to be used as fertilizer. Generally these waste are heaped up for a long time until reservoir under the stall gets full. The biggest worly is that waste heap under the stall could pollute family environment especially clean water sources. This research was conducted in Sukajadi village, sub district Ciomas (600-700 m dpl) and Cihideung Ilir village sub district Ciampea (180-220 m dpl) Bogor Prefecture on September 1999-February 2000. Materials used were sheep farmers in both villages. Primary data was collected by direct interview using questionaire to 50 respondents in Sukajadi village and 47 in Cihideung Ilir village. Analysis of 24 clean water source samples was done in Laboratorium of Animal Product Teclmology, Laboratorium of Dairy Cattle Production at Faculty of Animal Husbandry IPB aud in Laboratorium of Life Enviromnent Research Center (PPLH) IPB Bogor. Chemical characteristics tested were acidity @H), Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ortophosphate and total microbes. Data collected was descriptively analized and data of chemical characteristics was compared with water quality standard according to PP RI No. 20 year 1990 and KepMen KLH No. 02/Men-KLH/I/1988. Statistical analysis used were t and correlation test.
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Judul: Farmers' Perceptions, Interests, and Implementation of Waste and Waste Management in Sheep Farming in Cisarua Village
Abstrak: Usaha peternakan yang banyak dikembangkan oleh masyarakat adalah usaha peternakan domba. Usaha peternakan domba menghasilkan limbah dan akan berdampak negatif jika tidak dimanfaatkan serta dikelola secara optimal. Persepsi dapat memengaruhi keputusan dalam melakukan pemanfaat dan pengolahan limbah. Penelitian ini bertujuan menganalisis persepsi, minat dan implementasi peternak terhadap limbah dan pengolahan. Responden penelitian ini berjumlah 42 orang dengan kriteria yang sudah ditentukan. Data yang diambil terdiri atas karakteristik persepsi, minat dan implementasi peternak. Data di analisis menggunakan analisis deskriptif dan uji rank spearman. Hasil analisis menunjukkan bahwa persepsi peternak terhadap limbah tergolong baik yang artinya peternak menganggap bahwa limbah memiliki nilai manfaat. Minat peternak terhadap pengolahan tergolong sedang. Implementasi yang dilakukan peternak dengan memanfaatkan limbah secara langsung tanpa adanya pengolahan terlebih dahulu. Persepsi peternak berhubungan dengan usia, skepemilikan ternak, akses informasi., Sheep farming was a common practice among the community. However, this activity produced waste that could have negative consequences if not utilized and managed optimally. Perception plays a significant role in influencing decisions regarding waste utilization and processing.This research aimed to analyze the perception, interest, and implementation of sheep farmers towards waste and its processing. The study involved 42 respondents who met the predetermined criteria. Data was collected on the characteristics of perception, interest, and implementation of the farmers. Data analysis was conducted using descriptive analysis and Spearman's rank test.The results indicated that the farmers had a good perception of waste, meaning they recognized its potential value. However, their interest in processing waste was only moderate. The implementation observed was that farmers directly utilized the waste without any prior processing. The study found that farmers' perception was related to their age, livestock ownership, and access to information
Keyword: domba, limbah, Minat, Persepsi

Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf