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All Journal Management of Aquatic Resources Journal (Maquares) Jurnal Teknik Industri Terintegrasi (JUTIN) Journal of English Language and Education
Dimas Nugraha
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Other

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PENGARUH PERBEDAAN SUHU TERHADAP PERKEMBANGAN EMBRIO, DAYA TETAS TELUR DAN KECEPATAN PENYERAPAN KUNING TELUR IKAN BLACK GHOST (Apteronotus albifrons) PADA SKALA LABORATORIUM Nugraha, Dimas
Management of Aquatic Resources Journal (MAQUARES) Vol 1, No 1 (2012): Journal of Management of Aquatic Resources
Publisher : Departemen Sumberdaya Akuatik,Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.041 KB)

Abstract

Ikan black ghost merupakan salah satu ikan hias komoditi ekspor yang memiliki nilai ekonomis yang cukup menjanjikan. Ikan ini menyukai perairan dengan suhu 26 – 28 0C. Tujuan penelitian ini yaitu mengetahui pengaruh suhu terhadap perkembangan embrio, daya tetas telur dan penyerapan kuning telur ikan black ghost (A. albifrons). Metode yang digunakan adalah metode eksperimen dalam skala laboratories dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 4 (empat) perlakuan suhu yaitu 24, 26, 28 dan 30 0C dan 3 (tiga) ulangan yang dilaksanakan pada 19 Maret – 04 Mei 2012 di Balai Penelitian dan Pengembangan Budidaya Ikan Hias Air Tawar Depok, Jawa Barat. Hasil penelitian didapatkan waktu perkembangan embrio yang paling cepat adalah perlakuan suhu 30 0C (55 jam 56 menit). Daya tetas telur (HR) presentase yang tertinggi adalah perlakuan suhu 26 0C adalah 36%. Waktu kecepatan penyerapan kuning telur yang paling cepat adalah perlakuan suhu 30 0C (4 hari 21 jam).Hasil Daya Tetas Telur (HR) menunjukan bahwa data didapatkan menyebar normal dengan nilai signifikan 0,932 dan homogenitas 0,848 yang bersifat homogen. Dari uji anova data tersebut terlihat bahwa F hitung adalah 3,167 dengan F tabel 4,07. Karena F hitung < F tabel, maka H0 diterima. Dengan demikian data yang didapatkan Suhu air yang berbeda tidak berpengaruh langsung terhadap daya tetas telur larva ikan black ghost .Kata Kunci : Ikan black ghost, suhu, perkembangan embrio, daya tetas telur dan kecepatan penyerapan kuning telurAbstractBlack ghost is one of the prospective ornamental fish export commodities which have fish economic value. These fish prefer waters with range temperature of 26-28 0C. The method used was experimental laboratories with design used Randomized Design Complete with 4 (four) treatment temperature of 24, 26, 28 and 30 0C and 3 (three) replicated whose have been conducted on 19 March to 4 May 2012 at Research and Development Center Aquaculture Freshwater Ornamental Fish Depok, West Java. The results obtained which the longest embryonic development was the fastest time of the treatment temperature is 30 0C (55 hours 56 minutes). Hatching Rate (HR) is the highest percentage is 26 0C temperature treatment was 36%. The speed of absorption of the yolk of the fastest time was 30 0C temperature treatment (4 days 21 hours). The results of Hatching Rate showed that the spread of data obtained normal with a significant value 0,932 and homogeneous 0,848. ANOVA of the data can be seen that F calculated was 3,167 and F table was 4,07. Since F calculated <F table, then H0 is accepted. It means that water temperatures does not directly influence hatching rate black ghost fish larvae.Keywords: black ghost fish, temperature, embryo, yolk absorption, hatching rate.
Analisis Pemilihan Supplier Timah Menggunakan Metode AHP dan TOPSIS di IKM Geulis Automotif Nugraha, Dimas; Ulum, Rikzan Bachrul; Wibowo, Priyo Ari
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 3 (2025): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i3.48249

Abstract

Supplier selection is a crucial aspect in supporting smooth production processes, particularly in ensuring the availability of high-quality raw materials. This study aims to develop a decision support system to determine the best tin Supplier using the Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). AHP is applied to determine the weights of five main criteria: price, quality, availability, delivery, and service, with delivery receiving the highest weight of 0.484. Subsequently, TOPSIS is used to rank Supplier alternatives based on the calculated weights. The results show that Supplier 2 is the best choice according to AHP with a preference value of 0.333, while TOPSIS recommends Supplier 1 with a preference value of 0.604. This difference reflects the distinct evaluation approaches of each method. Combining AHP and TOPSIS offers a more objective and comprehensive assessment for more accurate Supplier selection decisions.
Investigating Errors in Sentence Structure and Punctuation in Non-English Department Students’ Writing: Cause and Remedies Nugraha, Dimas; Fiftinova, Fiftinova
Journal of English Language and Education Vol 11, No 1 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jele.v11i1.1899

Abstract

Writing accuracy is a vital component of academic communication, especially for students in non-English departments who are required to produce written texts in English despite limited linguistic training. This study investigates sentence structure and punctuation errors in the writing of non-English Department students at Sriwijaya University, identifies the causes of these errors, and suggests possible remedies to improve students’ writing competence. Using a qualitative descriptive research design, the study analyzed narrative and descriptive essays written by 20 undergraduate students from four non-English study programs in the Faculty of Teacher Training and Education. The analysis was conducted using Corder’s (1974) Error Analysis framework, which classifies errors into omission, misformation, misordering, and addition. To enrich the findings, semi-structured interviews were also carried out with selected students to explore their writing experiences, perceived difficulties, and strategies for dealing with writing problems. The findings show that sentence structure errors occurred more frequently than punctuation errors. Misformation errors were the most dominant type of sentence structure errors, particularly involving incorrect verb forms, tense misuse, and subject–verb disagreement, followed by omission errors such as missing subjects or auxiliary verbs. Punctuation errors mainly included the omission of periods at the end of sentences, misuse of commas, capitalization errors, and incorrect use of apostrophes. Interview data revealed that limited grammar mastery, first language interference, insufficient writing practice and feedback, and psychological factors such as low confidence and time pressure were the main causes of these errors. Overall, the study concludes that sentence structure and punctuation errors among non-English Department students are influenced by a combination of linguistic, instructional, and psychological factors, highlighting the need for grammar-integrated writing instruction, focused feedback, and continuous writing support to enhance students’ academic writing accuracy and clarity.
Co-Authors Fiftinova Fiftinova, Fiftinova Rikzan Bachrul Ulum Wibowo, Priyo Ari