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Characteristics of Rainfall-Discharge and Water Quality at Limboto Lake, Gorontalo, Indonesia Subehi, Luki; Wibowo, Hendro; Jung, Kwansue
Journal of Engineering and Technological Sciences Vol 48, No 3 (2016)
Publisher : ITB Journal Publisher, LPPM ITB

Problems of high turbidity, sedimentation, water pollution and siltation occur at Limboto Lake, Gorontalo, Indonesia. The objective of this study was to analyze the rainfall-discharge relationship and its implications for water quality conditions. Secchi disk (water transparency), chlorophyll-a (chl-a), and total organic matter (TOM) were measured in May 2012, September 2012 and March 2013 at three sites of the lake (L-1, L-2 and L-3) to observe the impacts on the surrounding catchment. Based on representative stations for rainfall data from 2004 to 2013, monthly averages of rainfall in March-May (166.7 mm) and September (76.4 mm) were used to represent the wet and dry period, respectively. Moreover, sediment traps at these three sites were installed in September 2012. Based on the analysis it is suggested that rainfall magnitude and land use change at the Alopohu River catchment influenced the amount of materials flowing into the lake, degrading the water quality. Specifically, the higher average rainfall in May (184.5 mm) gave a higher average total sediment load (4.41 g/L/day). In addition, water transparency decreased with increasing chl-a. This indicates that the concentrations of sediment and nutrients, reflected by the high amount of chl-a, influenced the water quality conditions.

Modul Belajar Elektronik pada Materi Ajar Merakit Personal Computer Putra, Ranggri Pratama R; Supraptono, Eko; Wibowo, Hendro
Edu Komputika Journal Vol 3 No 1 (2016): Edu Komputika Journal
Publisher : Jurusan Teknik Elektro Universitas Negeri Semarang

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The purpose of this study was to develop an electronic learning modules that can be used to support learning assemble a personal computer (PC) as well as implement the electronic learning modules in order to increase interest and student learning outcomes. The method used in the study is the Research and Development (R & D) research design one-group pretest-posttest. The steps in the research include analysis of the potential and problems, data collection, product design, design validation to the expert media and materials, design revision, the revision of the product as well as product testing to students of class X TKJ SMK Islam Sudirman II Ambarawa. Media developed feasible for use as a learning support assemble a personal computer (PC) based on the results of the validation. The results of hypothesis testing using t-test showed that the value t table = 2.045 <t = 4.67 which means Ha accepted and the average yield learn to assemble personal computer (PC) using an electronic learning module is greater than 80. By testing n- the gain obtained by the gain of 0.44, or 44%, which is within the range of 0.3 <g <0.7 were categorized as moderate, it can be said has increased significantly. Results of student questionnaire responses to aspects of feeling happy, student interest, attention, and aspects of the involvement of students showed a very positive response.

Pengaruh Inflasi Dan BI Rate Terhadap Imbal Hasil Penyaluran Investasi Dana Haji Pada Sukuk Dana Haji Indonesia Salatalohy, Hasmiati Arsiba; Wibowo, Hendro
Kordinat: Jurnal Komunikasi antar Perguruan Tinggi Agama Islam Vol 18, No 1 (2019): Jurnal Komunikasi Antar Perguruan Tinggi Agama Islam
Publisher : Kopertais Wilayah I DKI Jakarta dan Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kordinat.v18i1.11478

Penelitian ini bertujuan untuk meneliti efek inflasi dan BI Rate pada laba atas investasi dana Haji Sukuk dana Haji Indonesia periode 2010-2018. Sampel digunakan teknik purposive sampel dan memperoleh 13 sampel SDHI seri yang telah matang selama periode rentan 2010-2018 dari yang dipublikasikan sejak 2009. Metode analisis yang digunakan dalam penelitian ini adalah regresi data panel diproses menggunakan Eviews 9. Hasil studi ini menunjukkan bahwa inflasi dan BI Rate secara simultan mempengaruhi distribusi kembali dari Haji dana investasi pada Sukuk dana Haji Indonesia periode 2010-2018. Sementara itu, sebagian inflasi dan BI rate tidak berpengaruh signifikan di SDHI menghasilkan.

KARAKTERISTIK DANAU ASAL VULKANIK STUDI KASUS: DANAU TOLIRE, PULAU TERNATE Setiawan, Fajar; Wibowo, Hendro; Budi Santoso, Arianto; Nomosatryo, Sulung; Yuniarti, Ivana
LIMNOTEK - Perairan Darat Tropis di Indonesia Vol 21, No 2 (2014)
Publisher : Research Center for Limnology

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Ternate merupakan sebuah pulau vulkanik di Maluku Utara, didalamnya terdapat gunung api aktif (G. Gamalama) berketinggian 1.715 m dpl. Di pulau ini terdapat tiga danau (Tolire Besar, Ngade dan Tolire Kecil) yang berdasarkan proses terbentuknya digolongkan sebagai danau vulkanik dengan type Maar. Pengukuran yang dilakukan di Danau Tolire Besar pada tahun 2011 menghasilkan informasi kondisi fisik danau dan daerah tangkapannya. Danau Tolire dikelilingi oleh tebing curam setinggi 60-80 m, tidak mempunyai outlet dan inlet hanya berupa alur air dari puncak Gunung. Luas DTA danau adalah 244,2 Ha dengan tanah ber-ordo Inceptisols dan Ultisols, dengan Iklim termasuk tipe iklim B (Basah). Kedalaman maksimum danau 43,1 m, diameter 600 m, luas badan air 26,5 Ha, kecerahan danau hanya 4 m, salinitas, DO serta profil pH dan ORP mempunyai pola yang hampir sama, yang mengindikasikan bahwa pada kedalaman antara 8 dan 9 m adalah lapisan chemocline atau oxycline. Lapisan permukaan cenderung bersifat oksidatif dan lapisan dasar reduktif. Tidak dijumpai adanya stratifikasi lapisan danau oleh perbedaan suhu, dengan suhu permukaan 30°C. Daya dukung danau terhadap biota ikan sangat rendah, karena faktor tingginya kandungan sulfida dan lingkungan yang terisolir.

STUDI KELOMPOK NELAYAN TRADISIONAL PADA WILAYAH PESISIR DI KECAMATAN BULELENG Wibowo, Hendro; treman, i wayan; sutarjo, sutarjo
Jurnal Pendidikan Geografi Undiksha Vol 2, No 2 (2014): Jurnal Pendidikan Geografi Undiksha
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpg.v2i2.20404

Penelitian ini dilakukan di Kecamatan Buleleng dengan tujuan, 1) Untuk mendeskripsikan persebaran kelompok nelayan tradisional di Kecamatan Buleleng. 2) Untuk mengetahui kondisi organisasi kelompok nelayan tradisional di Kecamatan Buleleng. 3) Untuk mengetahui kondisi sosial ekonomi kelompok nelayan tradisional di Kecamatan Buleleng. Populasi penelitian ini sebanyak 544 orang nelayan yang tersebar di masing-masing desa yang ada di Kecamatan Buleleng. Teknik pengambilan sampel dilakukan dengan teknik purposive sampling yang artinya pengambilan sampel dengan pertimbangan tertentu sesuai dengan tujuan penelitian. Berkenaan dengan itu maka dilakukan penelitian sampel dengan menggunakan 51 responden dari 12 desa yang menjadi pedoman dalam penelitian ini. Pengumpulan data primer menggunakan metode observasi dan kuesioner, pengumpulan data sekunder menggunakan pencatatan dokumen. Teknik analisis data yang dipakai dalam penelitian ini adalah analisis deskriptif kualitatif. Hasil penelitian menunjukkan bahwa 1) Pola persebaran kelompok nelayan pada wilayah pesisir di Kecamatan Buleleng mengikuti garis pantai atau memanjang (Linier), ini disebabkan oleh aktifitas kelompok nelayan tradisional yang ada pada wilayah pesisir. 2) Kondisi organisasi kelompok nelayan tradisional terbilang cukup baik dan lengkap. Hal ini disebabkan karena dalam mendirikan kelompok nelayan harus memiliki susunan pengurus yang didaftarkan ke Dinas Perikanan dan Kelautan. 3) Kondisi sosial ekonomi kelompok nelayan tradisional terbilang masih rendah, mulai dari jenjang pendidikan yang rata-rata hanya hingga tingkat SD sampai pada pendapatan para nelayan yang rata-rata Rp 447.000,- menyebabkan beberapa nelayan di Kecamatan Buleleng mencari pekerjaan sampingan untuk memenuhi kebutuhan hidupnya.

The Impact of The Management of Zakat, Infaq, and Shadaqah on the Social-Based Program of the Sumedang Sehat based on Social Return on Investment (SROI) (Case Study of BAZNAS Sumedang Regency) Allawi, Aditia Rahman; Wibowo, Hendro
ZISWAF Vol 8, No 2 (2021): ZISWAF: Jurnal Zakat dan Wakaf
Publisher : State Islamic Institute of Kudus (IAIN Kudus)

Various programs have been presented for the distribution of zakat, donations, and shadaqah that have been collected. The purpose of zakat, infaq, and shadaqah is not only to help the poor related to consumptive things, but it also has a permanent goal, that is to alleviate poverty. One goal of the Sustainable Development Goals (SDGs) in the first of the 17 goals and 169 targets, Â specifically ending poverty in any form and anywhere. In addition, there are still benefits from zakat, donations, and alms for mustahics, including the health sector. The Sumedang Sehat program is a BAZNAS program in the Sumedang Regency in the health sector. As one program established and funded by BAZNAS Sumedang District, the Sumedang Sehat program requires evidence of the impact and how much impact it has on the program in order to be transparent about the zakat, infaq, and alms funds that have been distributed. This study aims to calculate the impact of a BAZNAS program, namely the Sumedang Sehat program, using social return on investment (SROI). The results of this study showed an SROI ratio of 51.22:1. Every IDR 1 invested resulted in IDR 51.22, which benefits both economically, socially, and environmentally. This means that the Sumedang Sehat program has provided benefits 51.22 times greater than the value of the invested input.

Modul Belajar Elektronik pada Materi Ajar Merakit Personal Computer Putra, Ranggri Pratama R; Supraptono, Eko; Wibowo, Hendro
Edu Komputika Journal Vol 3 No 1 (2016): Edu Komputika Journal
Publisher : Jurusan Teknik Elektro Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/edukomputika.v3i1.20501

The purpose of this study was to develop an electronic learning modules that can be used to support learning assemble a personal computer (PC) as well as implement the electronic learning modules in order to increase interest and student learning outcomes. The method used in the study is the Research and Development (R & D) research design one-group pretest-posttest. The steps in the research include analysis of the potential and problems, data collection, product design, design validation to the expert media and materials, design revision, the revision of the product as well as product testing to students of class X TKJ SMK Islam Sudirman II Ambarawa. Media developed feasible for use as a learning support assemble a personal computer (PC) based on the results of the validation. The results of hypothesis testing using t-test showed that the value t table = 2.045 <t = 4.67 which means Ha accepted and the average yield learn to assemble personal computer (PC) using an electronic learning module is greater than 80. By testing n- the gain obtained by the gain of 0.44, or 44%, which is within the range of 0.3 <g <0.7 were categorized as moderate, it can be said has increased significantly. Results of student questionnaire responses to aspects of feeling happy, student interest, attention, and aspects of the involvement of students showed a very positive response.

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