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Papers by ridwan hakim

Research paper thumbnail of Pengaruh Kenaikan Harga Kedelai Terhadap Struktur Biaya dan Keuntungan Usaha Tempe (Studi Kasus: Rumah Tempe Indonesia di Bogor)

Research paper thumbnail of Efektivitas Penggunaan Metode Reciprocal dan Demonstrasi Terhadap Teknik Dasar Shooting Sepakbola

Kemampuan teknik dasar shooting sepakbola yang ditunjukkan siswa kurang maksimal, seperti bola te... more Kemampuan teknik dasar shooting sepakbola yang ditunjukkan siswa kurang maksimal, seperti bola tembakan jauh dari sasaran, hasil tembakan mudah ditangkap penjaga gawang, dan bola tidak sampai ke gawang. Oleh karena itu diperlukan adanya solusi dengan mengaplikasikan metode pengajaran yang tepat. Tujuan penelitian adalah untuk mengetahui efektivitas penggunaan metode reciprocal dan demonstrasi terhadap teknik dasar shooting dalam permainan sepakbola. Metode penelitian menggunakan eksperimen desain the randomized pretest-posttest control group design. Subjek penelitian merupakan siswa kelas VIII SMP Negeri 1 Karamatmulya Kabupaten Kuningan dengan jumlah populasi sebanyak 182 orang, sedangkan sampel 60 orang yang dibagi menjadi dua kelompok. Kelas VIII A sebanyak 30 siswa diberi perlakuan metode resiprokal dan kelas VIII B sebanyak 30 siswa diberi perlakuan metode demonstrasi. Teknik pengambilan sampling yaitu cluster random sampling. Instrumen untuk mengukur keterampilan menembak bol...

Research paper thumbnail of Methane enrichment on biogas generated from anaerobic digester using coconut shell-based activated carbon

This study evaluates methane enrichment on biogas generated from Anaerobic Digester (AD) through ... more This study evaluates methane enrichment on biogas generated from Anaerobic Digester (AD) through CO 2 adsorption process so that biogas can be used as fuel for vehicle engines, power plants, and natural gas substitutes. The experiment was observed by passing biogas synthesis (45% CH4 + 55% CO 2 ) and biogas from cattle manure ±59.7% CH 4 , ± 37.1% CO 2 and ±3.2% other gases) in spontaneously pressurized adsorption column. In addition, observation of CO 2 adsorption capacity at various pressure and fixed temperature (27°C) was performed using pure CO 2 (±98%). Methane in biogas has been successfully purified to 92% at 0.5 L/min flowrate and 79.6 seconds retention time. The adsorbent will be saturated after gas flowing for 60 and 80 minutes for synthesis biogas and biogas from AD on the amount of adsorbent of 266 grams. A change of surface area of activated carbon (AC) after thermal regeneration at 160°C for 2 hours was 7.51% and regeneration efficiency was 67%. The adsorption process...

Research paper thumbnail of Representation of Women in Javanese Patriarchal Culture in the Performance of Teater

This research attempts to analyze the representation of women in the Javanese patriarchy in a the... more This research attempts to analyze the representation of women in the Javanese patriarchy in a theater performance entitled 'Archeology of Beha' by Benny Yohannes, performed by the Ukm Teater Gabung Unsika. This research uses the theory of semiotic analysis (study of signs) by Roland Barthes. Barthes argues that the sign system is divided into denotations, connotations and myths. This research uses a qualitative approach that is descriptive and uses text research techniques. Thus, this study only describes the situation, makes descriptive, and illustrative, systematically. Based on the discussion, the results of the study show that the representation of women in the Javanese patriarchy in theater performances entitled 'Archeology of Beha' by Benny Yohannes performed by the UKM Theater Gabung Unsika, includes: Women experiencing sexual objectification; Women in the feminine role get weak views; Women experience injustices related to the dichotomy of domestic and public...

Research paper thumbnail of Persepsi Siswa Terhadap Kopentensi Guru dan Hubunganya dengan Prestasi belajar Matematika Siswa kelas 11 SMAN 2 Bogor

Research paper thumbnail of Pengaruh Kenaikan Harga Kedelai Terhadap Struktur Biaya dan Keuntungan Usaha Tempe (Studi Kasus: Rumah Tempe Indonesia di Bogor)

Research paper thumbnail of Efektivitas Penggunaan Metode Reciprocal dan Demonstrasi Terhadap Teknik Dasar Shooting Sepakbola

Kemampuan teknik dasar shooting sepakbola yang ditunjukkan siswa kurang maksimal, seperti bola te... more Kemampuan teknik dasar shooting sepakbola yang ditunjukkan siswa kurang maksimal, seperti bola tembakan jauh dari sasaran, hasil tembakan mudah ditangkap penjaga gawang, dan bola tidak sampai ke gawang. Oleh karena itu diperlukan adanya solusi dengan mengaplikasikan metode pengajaran yang tepat. Tujuan penelitian adalah untuk mengetahui efektivitas penggunaan metode reciprocal dan demonstrasi terhadap teknik dasar shooting dalam permainan sepakbola. Metode penelitian menggunakan eksperimen desain the randomized pretest-posttest control group design. Subjek penelitian merupakan siswa kelas VIII SMP Negeri 1 Karamatmulya Kabupaten Kuningan dengan jumlah populasi sebanyak 182 orang, sedangkan sampel 60 orang yang dibagi menjadi dua kelompok. Kelas VIII A sebanyak 30 siswa diberi perlakuan metode resiprokal dan kelas VIII B sebanyak 30 siswa diberi perlakuan metode demonstrasi. Teknik pengambilan sampling yaitu cluster random sampling. Instrumen untuk mengukur keterampilan menembak bol...

Research paper thumbnail of Methane enrichment on biogas generated from anaerobic digester using coconut shell-based activated carbon

This study evaluates methane enrichment on biogas generated from Anaerobic Digester (AD) through ... more This study evaluates methane enrichment on biogas generated from Anaerobic Digester (AD) through CO 2 adsorption process so that biogas can be used as fuel for vehicle engines, power plants, and natural gas substitutes. The experiment was observed by passing biogas synthesis (45% CH4 + 55% CO 2 ) and biogas from cattle manure ±59.7% CH 4 , ± 37.1% CO 2 and ±3.2% other gases) in spontaneously pressurized adsorption column. In addition, observation of CO 2 adsorption capacity at various pressure and fixed temperature (27°C) was performed using pure CO 2 (±98%). Methane in biogas has been successfully purified to 92% at 0.5 L/min flowrate and 79.6 seconds retention time. The adsorbent will be saturated after gas flowing for 60 and 80 minutes for synthesis biogas and biogas from AD on the amount of adsorbent of 266 grams. A change of surface area of activated carbon (AC) after thermal regeneration at 160°C for 2 hours was 7.51% and regeneration efficiency was 67%. The adsorption process...

Research paper thumbnail of Representation of Women in Javanese Patriarchal Culture in the Performance of Teater

This research attempts to analyze the representation of women in the Javanese patriarchy in a the... more This research attempts to analyze the representation of women in the Javanese patriarchy in a theater performance entitled 'Archeology of Beha' by Benny Yohannes, performed by the Ukm Teater Gabung Unsika. This research uses the theory of semiotic analysis (study of signs) by Roland Barthes. Barthes argues that the sign system is divided into denotations, connotations and myths. This research uses a qualitative approach that is descriptive and uses text research techniques. Thus, this study only describes the situation, makes descriptive, and illustrative, systematically. Based on the discussion, the results of the study show that the representation of women in the Javanese patriarchy in theater performances entitled 'Archeology of Beha' by Benny Yohannes performed by the UKM Theater Gabung Unsika, includes: Women experiencing sexual objectification; Women in the feminine role get weak views; Women experience injustices related to the dichotomy of domestic and public...

Research paper thumbnail of Persepsi Siswa Terhadap Kopentensi Guru dan Hubunganya dengan Prestasi belajar Matematika Siswa kelas 11 SMAN 2 Bogor

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