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All Journal Journal of Information System, Applied, Management, Accounting and Research Jurnal Riset Kesehatan Poltekkes Depkes Bandung Jurnal Ilmiah Manajemen Kesatuan
Adawiyah, Rabi’atul
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Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Social Sciences

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OVER REAKSI PASAR TERHADAP HARGA SAHAM PERUSAHAAN MANUFAKTUR DI BURSA EFEK JAKARTA Adawiyah, Rabi’atul; Faozan, Akhmad
Journal of Information System, Applied, Management, Accounting and Research Vol 8 No 3 (2024): JISAMAR (June-August 2024)
Publisher : Sekolah Tinggi Manajemen Informatika dan Komputer Jayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52362/jisamar.v8i3.1592

Abstract

Overreaction phenomenon is one of the most complexity problem to make an efficient stock market. This research investigates are go public manufacturer company has an overreaction indicate, with year 2003 until 2005 scop. The methode that utilize threathen to Rahmawati and Tri (2005), calculation based on Jogiyanto (2000) formula. The finding of the research indicates there is overreaction that shows by loser portofolio to first rate winner portofolio. The comparison average cummulative abnormal return (ACAR) between loser portofolio and winner portofolio showing there’s significant difference. The research is also shown that winner portofolio is more overreacted than loser portofolio. The grouping of winner portofolio in three groups (A, B, C portofolio) and loser portofolio (D, E, F portofolio) according Rahmawati and Tri 2005), produce that Cumulative abnormal return (CAR) from loser portofolio not showing overreaction effect, only in winner portofolio showing overreaction effect.
Production Risk and Management Strategies of Potato Farming in Nagari Alahan Panjang, Solok Regency, West Sumatera Yusmarni, Yusmarni; Adawiyah, Rabi’atul; Nofialdi, Nofialdi
Jurnal Ilmiah Manajemen Kesatuan Vol. 13 No. 2 (2025): JIMKES Edisi Maret 2025
Publisher : LPPM Institut Bisnis dan Informatika Kesatuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37641/jimkes.v13i2.3374

Abstract

Solok Regency is the largest potato-producing area in West Sumatra. However, from 2015 until 2020, potato production in Solok Regency has experienced a decline. The decline in potato production in Solok Regency indicates production risks in potato farming. The decrease in potato production could be caused by several factors related to potato farming, such as rainfall, pests, diseases, and others. This study aims to identify and assess the sources of production risks in potato farming and analyze risk management in managing production risks in potato farming in Nagari Alahan Panjang, Solok Regency. Data were collected from 31 potato farmers in Nagari Alahan Panjang, the village with the highest potato production in Solok Regency. This study used a risk mapping matrix to analyze the data. The results of the study found nine sources of production risk in potato farming, namely: poor seeds, high rainfall, expensive fertilizers, unproperly weeding, caterpillar pests, thrips pests, pig pests, fusarium wilt disease, and phytophthora disease. This study formulates two types of risk management: preventive and mitigation strategies. A preventive approach is to prevent or reduce the frequency of risk by rotating crops properly and using organic fertilizers. A mitigation strategy is to minimize the impact of production risks by diversifying crops, utilizing biological agents of Trichoderma sp, applying proper Weeding, and partnering with certified potato seed breeders to get good quality seed.
APPLICATION OF MUSA BALBISIANA LOTION AGAINST STAPHYLOCOCCUS AUREUS Rezky, Muhammad Andyka; Budhy, Theresia Indah; Nuswantoro, Ari; Tika, Dian; Adawiyah, Rabi’atul
JURNAL RISET KESEHATAN POLTEKKES DEPKES BANDUNG, Online ISSN 2579-8103 Vol 17 No 1 (2025): Jurnal Riset Kesehatan Poltekkes Depkes Bandung
Publisher : Poltekkes Kemenkes Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34011/juriskesbdg.v17i1.2818

Abstract

Staphylococcus aureus merupakan bakteri patogen yang dapat menyebabkan berbagai infeksi, terutama pada kulit, seperti bisul, impetigo, dan abses. Infeksi ini sering kali ditandai dengan peradangan, nekrosis, dan pembentukan nanah, yang secara signifikan dapat mengganggu fungsi kulit sebagai pelindung tubuh. Tantangan utama dalam pengelolaannya adalah meningkatnya resistensi antibiotik, termasuk Methicillin-Resistant Staphylococcus aureus (MRSA), sehingga diperlukan alternatif yang efektif, seperti bahan herbal, untuk mengatasi permasalahan ini. Kulit pisang kepok kuning yang sering berakhir sebagai limbah organik, diketahui mengandung senyawa aktif seperti flavonoid, alkaloid, saponin, tanin, dan antioksidan. Senyawa-senyawa tersebut memiliki aktivitas antibakteri yang signifikan, disertai dengan kemampuan melindungi kulit dari kerusakan akibat radikal bebas. Penelitian ini bertujuan untuk menjelaskan perbedaan efektivitas losion berbahan dasar ekstrak kulit pisang kepok kuning dengan tiga konsentrasi berbeda, yaitu formula I (30%), formula II (60%), dan formula III (90%) dalam menghambat pertumbuhan Staphylococcus aureus. Penelitian berbentuk quasi eksperimental desain ini menggunakan metode difusi cakram. Hasil penelitian menunjukkan bahwa rata-rata diameter zona hambat formula I adalah 5,60 mm, formula II adalah 8,30 mm, dan formula III adalah 8,70 mm. Analisis statistik dengan uji Kruskal-Wallis menunjukkan nilai p = 0,004, yang mengindikasikan adanya perbedaan signifikan antar formula. Kesimpulannya, losion ekstrak kulit pisang kepok kuning menunjukkan efektivitas yang signifikan dalam menghambat pertumbuhan Staphylococcus aureus. Efektivitas ini meningkat secara proporsional dengan konsentrasi ekstrak, sehingga produk ini memiliki potensi untuk digunakan sebagai losion antibakteri.
Co-Authors Akhmad Faozan Ari Nuswantoro Nofialdi, Nofialdi Rezky, Muhammad Andyka Theresia Indah Budhy Sulisetyawati Tika, Dian Yusmarni Yusmarni