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All Journal Pendidikan Biologi Al-Mubin: Islamic Scientific Journal Jurnal Widya
Desi Anggriani
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Religion Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Social Sciences Other

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PENGARUH ANTIFEEDANT EKSTRAK KULIT BATANG ANGSANA (Pterocarpus indicus Willd.) TERHADAP FEEDING STRATEGY WERENG COKLAT (Nilaparvata lugens Stal.) Anggriani, Desi; Sumarmin, Ramadhan; Widiana, Rina
Pendidikan Biologi Vol 2, No 1 (2013)
Publisher : STKIP PGRI Sumbar

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Abstract

The Nilaparvata lugens Stal. is a harming parasitoid crop. It’s difficult to eliminatebecause it have faster metamorphosis . This parasitoid can form blooming population in ashort time and destroy crop at all of growth phase. The aim of this research is to know theeffects of Antifeedant extrac of Pterocarpus indicus Willd. to Feeding Strategy Nilaparvatalugens Stal. This research used Completely Randomized Design ( CRD) with 4 treatment and10 replication. The treatment are concentration 0 %, 2.5 %, 5 % and 7.5 %. The data analysisby ANOVA and than continued with LSD. This experiment conducted in ZoologyLaboratory of FMIPA UNP at February 2013. Result shows that concentration 5 % activitysearching Nilaparvata lugens Stal. require time which fastest to other treatment, the activityof grounding treatment with concentration 2.5 % requiring time which quickly while atactivity of gathering treatment with concentration 7.5 % very effective to pursue to eat it.Can conclude that extract of angsana at concentration 5 % can be use antifeedant byNilaparvata lugens Stal.
THE EFFECT OF STRUCTURED ACADEMIC CONTROVERSY MODEL ON STUDENTS' ARGUMENTATION ABILITY IN ECONOMIC SUBJECTS: AN EMPIRICAL STUDY FH, Yuliana; Anggriani, Desi
Al-Mubin Jurnal Ilmiah Islam
Publisher : Department of Research and Community Service at the Ummul Quro Al-Islami Bogor Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51192/almubin.v8i2.1805

Abstract

Structured Academic Controversy (SAC) is a learning model that develops learners' critical and argumentative thinking skills through structured debates from two different points of view. In learning economics, argumentation skills are important because they train students to think logically, express opinions, and make rational decisions. This study aims to determine the effect of applying the SAC model on improving students' argumentation skills in class X economics subjects at SMA Negeri 10 Palembang. The method used is quantitative with a One Group Pretest-Posttest type Quasi Experimental design. Data were obtained through tests and observations. The results showed that the average pretest score of students was 58.96 and increased to 84.3 in the posttest. The t-test results show that the tcount is 12.144 > table 2.030 so Ho is rejected and Ha is accepted. This proves that the SAC model has a significant effect on improving argumentation skills. In addition, the observation of students' activities also showed an increase, namely 75% in the first meeting, 86.9% in the second meeting, and 97.6% in the third meeting, which reflected the effectiveness of the SAC learning model
PENGARUH UKURAN PERUSAHAAN, LEVERAGE, DAN RETURN ON ASSET TERHADAP NILAI PERUSAHAAN PADA PERUSAHAAN SEKTOR MAKANAN DAN MINUMAN YANG TERDAFTAR DI BURSA EFEK INDONESIA (PERIODE 2019 -2023) Anggriani, Desi; Sari , Eka Purnama
JURNAL WIDYA Vol. 5 No. 1 (2024): Jurnal Widya, April 2024
Publisher : Akademi Manajemen Informatika dan Komputer Widya Loka Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54593/awl.v5i1.291

Abstract

Penelitian ini bertujuan untuk menguji dan menganalisis pengaruh Return On Assets, Leverage dan Ukuran Perusahaan terhadap Nilai Perusahaan.Penelitian ini menggunakan data sekunder laporan tahunan perusahaan makanan dan minuman yang terdaftar di BEI selama periode 2019-2022. Populasi dalam penelitian ini adalah perusahaan makanan dan minuman dengan metode purposive sampling, menghasilkan 11 perusahaan yang layak. Metode yang digunakan dalam penelitian ini adalah analisis regresi linear berganda, uji hipotesis menggunakan t- statistik untuk menguji koefisien regresi parsial serta f-statistik untuk menguji kelayakan model penelitian dengan level of significance 5%.Selain itu juga dilakukan uji asumsi klasik yang meliputi uji normalitas, uji multikolinieritas, uji heteroskedastisitas dengan bantuan SSPS versi 25. Hasil penelitian ini menunjukkan bahwa ukuran perusahaan tidak berpengaruh terhadap nilai perusahaan sedangkan return on assets dan leverage berpengaruh terhadap nilai perusahaan.
Co-Authors FH, Yuliana Ramadhan Sumarmin RINA M.Si WIDIANA S.Si Sari , Eka Purnama