Judul: Karakteristik Perikanan Sidat (Anguilla spp): Teknologi Penangkapan dan Aspek Biologi di Kabupaten Kaur, Provinsi Bengkulu
Abstrak: Kegiatan penangkapan ikan sidat untuk konsumsi sehari - hari sudah dilakukan masyarakat Kabupaten Kaur, namun data terkait kondisi perikanan sidat, jenis sidat, komposisi hasil tangkapan, dan aspek biologi ikan sidat di Kabupaten Kaur masih sangat terbatas, khususnya di Sungai Luas dan Sungai Kinal. Data dan informasi mengenai perikanan sidat di Kabupaten Kaur diharapkan dapat digunakan sebagai informasi dasar dalam pemanfaatan perikanan sidat secara berkelanjutan. Penelitian ini bertujuan mendeskripsikan perikanan sidat, menganalisis komposisi hasil tangkapan perikanan sidat, dan menganalisis karakteristik biologi ikan sidat di Kabupaten Kaur, khususnya di Sungai Luas dan Sungai Kinal. Penelitian menggunakan alat tangkap pancing dan bubu sidat dilakukan pada bulan Juni - Agustus 2021 di Sungai Luas dan Sungai Kinal, Kabupaten Kaur, Bengkulu. Hasil identifikasi ciri morfologi dan perbandingan nilai ano - dorsal ditemukan satu spesies sidat, yakni Anguilla marmorata dengan nilai perbandingan ano - dorsal sebesar 14,05 - 18,23. Ikan sidat jenis Anguilla marmorata tertangkap pada setiap stasiun di Sungai Luas dan Sungai Kinal. Nilai indeks keragaman Shannon - Wiener (H‟) hasil tangkapan pancing sidat di semua stasiun di kedua sungai tersebut relatif sama, berkisar antara 1,14 - 1,69. Daerah penangkapan ikan sidat di Sungai Luas dan Sungai Kinal terbagi menjadi 3 lokasi, yakni muara sungai, pertengahan sungai, dan di hulu sungai. Ikan sidat dengan bobot terberat tertangkap pada stasiun 1 (muara sungai) di Sungai Luas. Ikan sidat dengan tingkat kematangan gonad tertinggi (TKG IV) tertangkap di stasiun 1 Sungai Luas dan Sungai Kinal., The fishing activity of eel fish for daily consumption has been carried out by the local people in the Kaur Regency. However, the data related to the eel fishery conditions, species of the eel fish, catch composition, and biological aspect of eel in Kaur Regency is still very limited, especially in the Luas river and Kinal river. Data and information on the eel fisheries in Kaur Regency are expected to be used as basic information in sustainable use of the eel fisheries. This study aims to describe the eel fishery, analyze the composition of the catch of eel fishery, and analyze the biological characteristics of eel in Kaur Regency, especially in the Luas river and the Kinal river. Experimental Fishing using eel hand line was carried out from June to August 2021 in Luas river and Kinal river, Kaur Regency, Bengkulu. The results of identification of morphological characteristics and comparison analysis of ano - dorsal values found one species of the eel in this area, namely Anguilla marmorata with an ano - dorsal ratio of 14.05-18.23. The A. marmorata eel was caught at every station for both rivers. The Shannon - Wiener (H') diversity index of the catches at all stations in both rivers was relatively similar, ranging from 1.14 to 1.69. The eel fishing grounds in the Luas river and Kinal river are divided into 3 areas: estuary, middle part of the rivers, and upstream area. Eel with the heaviest weight was caught at station 1 (river estuary) in the Luas river. The eel with the highest Gonad Maturity Level (TKG IV) was caught at stations 1 Luas river and Kinal river.
Keyword: Anguilla marmorata, Catch composition, Eel gonads, Kinal river, Luas river

Judul: Analisis Sumberdaya dan Faktor-faktor Pengelolaan Perikanan Sidat (Anguilla spp.) di Muara Sungai Cibuni, Kabupaten Sukabumi
Abstrak: Indonesia memiliki kelimpahan sidat baik dalam ukuran benih maupun ukuran konsumsi yang melimpah, namun belum dimanfaatkan dengan baik. Penelitian ini dilaksanakan pada bulan Februari sampai bulan Juni 2021. Tujuan penelitian adalah mengidentifikasi dan menganalisis faktor pengelolaan perikanan sidat di muara Sungai Cibuni, Kabupaten Sukabumi. Manfaat dari penelitian ini adalah menyajikan informasi terkait faktor sosial-ekologi perikanan sidat (glass eel) yang dapat menjadi acuan dalam pengelolaan sumberdaya dan perikanan sidat di muara Cibuni, Kabupaten Sukabumi. Pengambilan sampel glass eel dilakukan selama lima hari pada fase bulan gelap setiap bulannya. Muara Sungai Cibuni memiliki kualitas perairan yang baik dengan kisaran sesuai baku mutu, tipologi muara juga mendukung ruaya sidat. Muara Sungai Cibuni memiliki tiga jenis sidat yaitu Anguilla bicolor bicolor, Anguilla marmorata dan Anguilla nebulosa nebulosa. Anguilla bicolor bicolor mendominasi kelimpahan dengan angka 84,55%. Biomassa glass eel tertinggi terjadi pada bulan maret sebesar 2157,32 kg. Demografi nelayan sidat di muara Sungai Cibuni berasal dari Desa Sinarlaut dan Desa Tegalbuleud, dengan dominasi sebaran usia 39-45 tahun, dominasi pendidikan pada Sekolah Lanjut Tingkat Pertama, dan dominasi telah bekerja selama 10-13 tahun. Pengelolaan glass eel di muara Sungai Cibuni memiliki atribut penghubung pengelolaan, adalah kebijakan pemerintah daerah yang dapat meningkatkan pengelolaan sidat di muara Sungai Cibuni., Indonesia has abundant eel, both in seed size and consumption size, but it has not been used properly. This research was conducted from February to June 2021. The purpose of the study was to identify and analyze the management factors of eel fisheries in the Cibuni River estuary, Sukabumi Regency. The benefit of this research is to provide information related to the socio-ecological factors of glass eel fisheries that can be used as a reference in resource management and eel fisheries in the Cibuni estuary, Sukabumi Regency. Glass eel sampling was carried out for five days in the dark moon phase each month. The estuary of the Cibuni River has good water quality with a range according to quality standards; the typology of the estuary also supports eels. The Cibuni River estuary has three types of eels, namely Anguilla bicolor bicolor, Anguilla marmorata and Anguilla nebulosa nebulosa. Anguilla bicolor bicolor dominates the abundance with a figure of 84.55%. The highest glass eel biomass occurred in March, which was 2157.32 kg. The demographics of eel fishermen in the Cibuni River estuary are from Sinarlaut Village and Tegalbuleud Village, with a dominance of 39-45 years of age distribution, dominance of education in Junior High School, and dominance of having worked for 10-13 years. The management of glass eels at the Cibuni River estuary has a management link attribute, namely local government policies that can improve eel management at the Cibuni River estuary.
Keyword: SES, Sidat, Sungai Cibuni

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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