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All Journal Pendidikan Biologi Jurnal Didaktika Dwija Indria Jurnal Bisnis Kompetitif
Desviana Safitri
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Agriculture, Biological Sciences & Forestry Education Social Sciences

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STRUKTUR ANATOMI ORGAN VEGETATIF DARUJU (Acanthus spp.) DI HUTAN MANGROVE KENAGARIAN MANGGUANG KOTA PARIAMAN Safitri, Desviana; Eka Putri, Irma Leilani; Amri, Erismar
Pendidikan Biologi Vol 2, No 2 (2013): Jurnal Mahasiswa Pendidikan Biologi Genap 2013-2014
Publisher : STKIP PGRI Sumbar

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Abstract

ABSTRACT A study on anatomical structure of the vegetative’s   organ was taken on Acanthus spp. based on differents leaf morphological. The samples was taken from Mangguang’s Mangrove, Pariman that has found seven leaves morphology variation of Acanthus spp. and semi permanent anatomy preparation was made in Plant Structure and Development laboratory of Andalas University. The purpose of this research was to describe anatomical structure of roots, steams, and leaves of Acanthus spp. The result has shown anatomical structure of roots, steams, and leaves from seven leaves variation of Acanthus spp. The transverse section of Acanthus  spp.  roots  composed  of  epidermis,  cortex,  aerenchyma,  and  stele (xylem and phloem with fibers), but last variation has periderm. The transverse section of all variation Acanthus spp. steams composed of epidermis, cortex, collenchyma, clorenchyma, parenchyma, endodermis, phloem’s fibers, vascular bundles (xylem and phloem) with collateral type, and empulur parenchyma. The tranverse section of Acanthus spp. leaves composed of cuticle, epidermis, salt glands, one until two layers hypodermis, palisade, spongy, and stomata. The paradermal section of all leaves variation Acanthus spp. shown stomata with diacytic type. That conclusion has shown similarly of anatomical structure altrought has differents leaf morphology.  
PENGARUH KUALITAS PRODUK DAN HARGA TERHADAP PREFERENSI KONSUMEN AYAM POTONG (STUDI KASUS AYAM POTONG MAS ADI DI DESA DU SKPA) Safitri, Desviana; Kurniawan, Hendry; Rahayu, Heffi Christya
Jurnal Ekonomi Bisnis Kompetif Vol 5 No 1 (2026): JURNAL BISNIS KOMPETIF (JBK) 2026
Publisher : Komunitas Manajemen Kompetitif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35446/bisniskompetif.v5i1.2757

Abstract

This study aims to examine the influence of product quality and price on consumer preferences for Mas Adi's broiler chicken in DU SKPA Village. Empirical phenomena in the field indicate that there are differences in consumer preferences in choosing where to buy broiler chicken in DU SKPA Village. Consumers tend to prefer buying broiler chicken from Mas Adi's business compared to other sellers because they consider the quality of the product and the price offered. This study uses a quantitative approach with a multiple linear regression analysis method processed using SPSS version 21 software. The study population includes all consumers of Mas Adi's broiler chicken in DU SKPA Village, whose number is unknown. The sampling technique used was accidental sampling, with the number of samples determined based on the formula of Hair et al., resulting in 140 respondents. Data collection was carried out through observation, interviews, and distributing questionnaires to consumers of Mas Adi's broiler chicken who served as research respondents. The collected data were then analyzed to identify the influence of each independent variable on the dependent variable. The results of the analysis indicate that product quality has a positive and significant effect on consumer preferences for Mas Adi's broiler chicken in DU SKPA Village. In addition, price has also been shown to have a positive and significant effect on consumer preferences. Simultaneously, the product quality and price variables have a positive and significant effect on consumer preferences for Mas Adi's broiler chicken in DU SKPA Village.
Implementasi Model Pembelajaran GIDL Berbantuan Media Light Box terhadap Kemampuan Kolaborasi Peserta Didik Safitri, Desviana; Pangestu, Deviyanti; Astiti, Niken Yuni; Mustakim, Erni
Didaktika Dwija Indria Vol 14, No 2 (2026): Didaktika Dwija Indria
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ddi.v14i2.116872

Abstract

Penelitian ini bertujuan menganalisis implementasi model pembelajaran GIDL (Group Investigation Discovery Learning) berbantuan media Light Box terhadap kemampuan kolaborasi peserta didik kelas V SD Negeri 3 Simbar Waringin tahun ajaran2025/2026. Penelitian menggunakan pendekatan kuantitatif dengan desain quasi experiment tipe nonequivalent control group design yang melibatkan satu kelas eksperimen dan satu kelas kontrol yang masing-masing berjumlah 16 peserta didik. Kelas eksperimen mendapatkan pembelajaran IPAS materi sifat-sifat cahaya dengan model GIDL berbantuan Light Box, sedangkan kelas kontrol menggunakan model Group Investigation dengan materi yang sama namun tanpa media pembelajaran. Data kemampuan kolaborasi dikumpulkan dengan angket skala likert yang telah diuji validitas dan reliabilitasnya, serta analisis menggunakan uji normalitas Shapiro-Wilk, uji homogenitas levene, perhitungan N-Gain, dan regrasi linier sederhana. Hasil penelitian menujukkan bahwa data berdistribusi normal dan homogen, namunu koefisien determinasi regresi hanya sebesar 7,8% dengan nilai Fhitung 0,426 < Ftabel 6,61 dan signifikansi 0,543 > 0,05, sehingga model GIDL berbantuan Light Box tidak berpengaruhu signifikan terhadap kemampuan kolaborasi peserta didik. Peningkatan skor N-Gain kemampuan kolaborasi pada kelas eksperimen maupun kontrol didominasi kategori rendah (g < 0,3), yang mengindikasikan bahwa intervensi pembelajaran pada dua pertemuan belum cukup untuk mengubah perilaku kalaborasi peserta didik secara bermakna.
Co-Authors Astiti, Niken Yuni Deviyanti Pangestu Erismar Amri Erni Mustakim Hendry Kurniawan, Hendry Irma Leilani Eka Putri