Internal energy dissipation in Enceladus's ocean from tides and libration and the role of inertial waves

Enceladus is characterised by a south polar hot spot associated with a large outflow of heat, the source of which remains unclear. We compute the viscous dissipation resulting from tidal and libration forcing in the moon's subsurface ocean using the linearised Navier-Stokes equation in a 3-dimensional spherical model. We conclude that libration is the dominant cause of dissipation at the linear order, providing up to about 0.001 GW of heat to the ocean, which remains insufficient to explain the (about) 10 GW observed by Cassini. We also illustrate how resonances with inertial modes can significantly augment the dissipation. Our work is an extension to Rovira-Navarro et al. [2019] to include the effects of libration. The model developed here is readily applicable to the study of other moons and planets

Aplikasi Data Warehouse untuk Menunjang Standar 3 Borang Akreditasi Prodi Informatika Universitas Mercu Buana

Dalam rangka meningkatkan kualitas pendidikan secara berkelanjutan baik input, proses maupun output dalam suatu program studi, diperlukan aplikasi yang dapat mendukung bisnis proses. Untuk mengatasi hal tersebut diperlukan solusi dasar dalam pembuatan laporan borang akreditasi khususnya standar 3 yang dapat mendukung proses pengambilan keputusan strategis untuk tingkat manajemen. Model pengambangan data warehouse yang digunakan dalam penelitian ini adalah model skema star. Hal ini akan menghasilkan suatu sistem informasi data warehouse yang dapat digunakan untuk menghasilkan informasi yang dibutuhkan dalam pengisian borang akreditasi. Data warehouse dapat menyajikan data dengan lebih cepat sesuai dengan kebutuhan serta menghasilkan informasi yang lebih ringkas. Kemudian dengan bantuan aplikasi data warehouse dapat juga dilakukan analisis multidimensi dan dapat menghasilkan informasi yang bersifat analistis, sehingga bermanfaat dalam pengambilan keputusan selanjutny

Meningkatkan Kemampuan Pemecahan Masalah, Komunikasi Matematis Melalui Penerapan Problem Posing

Penelitian ini bertujuan sebagai upaya meningkatkan kemampuan pemecahan masalah, komunikasi matematis,  peserta didik melalui penerapan problem posing pada pembelajaran matematika di Sekolah Menengah Pertama (SMP) pada materi Bangun Ruang Sisi Lengkung. Penelitian ini adalah penelitian tindakan kelas yang terdiri dari tiga siklus, yang setiap siklusnya terdiri dari empat tahap, yaitu: perencanaan, pelaksanaan, observasi, dan refleksi. Subyek penelitian ini adalah siswa kelas 9.2 SMP Negeri 18 Bandung tahun pelajaran 2019/2020 yang berjumlah 32 orang. Teknik pengumpulan data meliputi: tes kemampuan, wawancara, angket, observasi, dan dokumentasi. Data yang terkumpul diolah menggunakan analisis deskriptif.Pada kemampuan memecahkan masalah, pada siklus I masuk kriteria sedang, pada siklus II terjadi peningkatan persentase capaian, dan berada pada kriteria tinggi; sedangkan pada siklus III terjadi peningkatan dengan presentase yang semakin besar, dan berada pada kriteria tinggi. pada kelas eksperimen dengan penggunaan model pembelajaran problem posing, relatif lebih baik dari kelas kontrol yang menggunakan model pembelajaran konvensional. Berdasarkan hasil penelitian, disimpulkan bahwa penerapan model pembelajaran problem posing pada siswa kelas 9.2 SMP Negeri 18 Bandung tahun pelajaran 2019/2020 dapat meningkatkan kemampuan komunikasi matematis, kemampuan dalam pemecahan masalah,komunikasi matematis melalui penerapan problem posing

Population Of Rafflesia Patma At Leuweung Cipeucang Geopark Ciletuh Sukabumi

Rafflesia is a largest flower in its species in the world. The main issues which threatened this species were cause by; the destruction of therainforest as its natural fragmentation habitat and for its land conversion moreover the lack of conservation effort and understanding from thestakeholder. This plant belongs to endemic and protect species in Indonesia. This research purpose is to analyze Rafflesia patma population andecology at Leuweung Cipeucang Geopark Ciletuh Sukabumi. Purposive sampling was used to collect data in this research by using 1.000 meter plotplotwhich involve Rafflesia patma population and ecological data. The population data covering size, shape, quantity and inflorescence phase ofRafflesia patma while the ecological data covering the plant vegetation and physical habitat. 21 individual Rafflesia patma were found at LeweungCipeucang, and at the high of 196-217 m dpl Tetrastigma papilosum were located. Rafflesia patma population consists of 13% blooming flower, 9%inanimate after blooming, 26% living knop, 52% dead knop. The Highest significant index value (INP) occur in seeding level and stake on Streblusilicifolius species from Moraceae Family with 58,5% INP value at seeding level, 28% at stake level, at the tree vegetation level occur at Ficustinctoria species from Moracea family with 37,45% INP value. The highest diversity index occurs on seeding level vegetation is at 9,54

Hubungan Motivasi Belajar, Lingkungan Belajar dan Persepsi Siswa Tentang Media Pembelajaran

The objective of research is aimed to investigate the relation of (1) study motivation through economic study achievement, (2) study environment through economic study achievement, (3) students perception about learning media through economic study achievement, (4) study motivation, study environment, and learning media USAge through economic study achievement.This research used ex post facto method by correlation approach. The result of research show: there is correlation between study motivation (X) through economic study achievement (Y) which was 0,609 grade correlation; correlation study environment (X1) through economic study achievement (Y) was gotten 0,705 grade correlation; correlation student perception about learning media (X) through economic study achievement (Y)Â was gotten 0,718 grade correlation. According the data above, student perception about learning media is very highest grade correlation, it means learning media factors is factor which influence in economic study achievement directly, if it compared between study motivation and study environment.Penelitian ini bertujuan mengetahui hubungan (1) motivasi belajar dengan prestasi belajar ekonomi, (2) lingkungan belajar dengan prestasi belajar ekonomi, (3) persepsi siswa tentang media pembelajaran dengan prestasi belajar ekonomi, (4) motivasi belajar, lingkungan belajar, dan pemanfaatan media pembelajaran dengan prestasi belajar ekonomi. Penelitian ini menggunakan metode ex post facto dengan pendekatan korelasional. Hasil penelitian menunjukkan temuan: terdapat hubungan motivasi belajar (X) dengan prestasi belajar ekonomi (Y) diperoleh angka korelasi sebesar 0,609; hubungan lingkungan belajar (X1) dengan prestasi belajar ekonomi (Y) diperoleh korelasi sebesar 0,705; hubungan persepsi siswa tentang media pembelajaran (X) dengan prestasi belajar ekonomi (Y) diperoleh angka korelasi sebesar 0,718. Hal ini berarti bahwa faktor media pembelajaran merupakan faktor yang secara langsung paling menentukan prestasi belajar ekonomi jika dibandingkan dengan motivasi belajar dan lingkungan belajar.

Analisis Keragaman Genetik Pada Ikan Kerapu Macan (Epinephelus Fuscoguttatus) Yang Tahan Terhadap Penyakit Yang Disebabkan Bakteri Vibrio Alginolyticus

The research was purposed to analyse genetic similarity of tiger grouper (Epinephelus fuscoguttatus) inorder to select grouper that was resistant to Vibrio alginolyticus. In this study, fish were challenged with Vibrioalginolyticus and genetic similarity was examined by a PCR-RAPD method. Eight RAPD primers were used forPCR-RAPD analysis. The results showed that only three primers of RAPD primer (YNZ-22, UBC-456, danUBC-457) generated high number of RAPD fragments. The resistant group of tiger groupers generated higherpolymorph RAPD fragments than the susceptible groups. RAPD primer YNZ-22 and UBC-457 generated 82 %and 71 % of RAPD polymorph fragments from resistant group of fish and 71% and 60 % from susceptiblegroups, respectively. Primer YNZ-22 is a best genetic marker to analyse genetic similarity of tiger groupersproduced specific marker ranging from 1,2-2,0 kb. Genetic distances between the population of resistant fishand population of susceptible fish was 0.5091 and between individual of the resistant fish and susceptible fishwas 0.7032

Potensi Pengembangan Kawasan MOI sebagai RTH Hutan Kota dan Kawasan Agroeduwisata Perkotaan

RTH or also called green open space is an open space without a building, having certainsize, shape, and geographical boundaries with any status of mastery, in which there are woodyand annual green plants, with trees as the main plant and other plants (shrubs, grasses and othercover plants), as complementary plants and other objects that also complement and support thefunctions of the respective green space. RTH and urban forest found in the city of Makassar hasdecreased and not functioned optimally. In addition, RTH in the city of Makassar has not providedan educational function. Therefore, RTH in Makassar city needs to be developed by creating anarea such as agro-tourism area. One of location that has good potential and has been developedas one of the green open space and urban forest in Makassar is Maccini Sombala Site. MacciniSombala is an area located on Nuri Baru sub-district Tamalate of Makassar. Therefore, a MOIplanning concept is created as an agro-tourism area. This research aims to make MOI areaplanning as edu-agro-tourism area. The usefulness of this research is a consideration for thegovernment in the development of the area and other areas with other similar functions. Theresearch method used is the site design modification that leads to the concept of MOI areaplanning as edu-agro-tourism area