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All Journal Vegetalika JTSL (Jurnal Tanah dan Sumberdaya Lahan) Plantropica: Journal of Agricultural Science JURNAL ILMIAH MIMBAR DEMOKRASI IJECS: Indonesian Journal of Empowerment and Community Services Jurnal Info Sains : Informatika dan Sains Asian Journal of Community Services (AJCS) Maneggio
Yuliyani, Leny
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Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Utilizing linear regression to forecast the stock price fluctuations of top-rated companies Eka, Andi Primafira Bumandava; Bakri, Asri Ady; Yuliyani, Leny
Jurnal Info Sains : Informatika dan Sains Vol. 14 No. 01 (2024): Informatika dan Sains , Edition March 2024
Publisher : SEAN Institute

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Abstract

The purpose of this study is to use linear regression to forecast the closing stock price of the top 10 issuers from the LQ45 Index. When it is appropriate to purchase or sell the stock, it is determined by comparing the forecasted close price with the actual stock price. The relationship between independent factors (such past stock prices) and dependent variables (stock prices) is modelled using the linear regression approach. The prediction error rate is then calculated by comparing the expected and actual outcomes using the Root Mean Square Error (RMSE). It is evident from the data that the close stock price's anticipated growth does not consistently rise each month. For this reason, this prediction is crucial in assisting investors in their decision-making. It makes sense to sell the stock if the estimated growth of its closing price is expected to climb; conversely, if the projection is expected to fall, it makes sense to purchase the stock. According to the test findings, the linear regression model is capable of producing precise predictions that help investors decide what to buy on the Indonesian stock market.
Menyusun Model Pembelajaran Berbasis Etika Digital dalam Mewujudkan Good and Smart Digital Citizenship Abiyuna, Thaufan; Yuliyani, Leny; Apriyani, Dwi
Jurnal Ilmiah Mimbar Demokrasi Vol. 23 No. 2 (2024): Jurnal Ilmiah Mimbar Demokrasi Volume 23 No. 2 April 2024
Publisher : Program Studi PPKn FIS UNJ & Asosiasi Profesi PPKn Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jimd.v23i2.40379

Abstract

Penelitian ini bertujuan untuk menyusun strategi pembelajaran yang memanfaatkan media digital untuk membentuk etika yang baik agar dapat mewujudkan warga negara muda digital yang cerdas dan baik. Metode yang digunakan dalam penelitian ini adalah penelitian dan pengembangan dengan pendekatan mix method. Pengumpulan data dilaksanakan melalui wawancara, observasim dan dokumentasi di SMA Negeri 2 Tasikmalaya. Hasil penelitian ini menunjukkan bahwa proses penyusunan model dilakukan melalui tahapan perencanaan, pelaksanaan dan evaluasi yang menyeluruh serta mendalam sehingga menghasilkan komponen model pembelajaran seperti berikut: (1) pendekatan student center; (2) strategi yang digunakan adalah penggabungan pembelajaran berbasis nilai (value based education) dengan pembelajaran berbasis masalah (problem based learning); (3) Metode pembelajaran menggunakan ceramah, diskusi, pembelajaran berkelompok, penugasan, dan presentasi; (4) menggunakan taktik problem social meeting dan brain storming. (5) materi memuat integrasi nilai-nilai Pancasila dalam konteks bermedia digital; (6) Media pembelajaran berbasis digital; dan (7) instrumen evaluasi disusun secara sumatif dan formatif. Selain itu, komponen model dikembangkan menjadi sintak yang jelas dan mudah dilaksanakan dalam proses pembelajaran. Kata Kunci: etika digital, model pembelajaran, warga negara muda  
Pewarisan Karakter Kualitatif Populasi F2 Persilangan Seroja IPB X Peter Pepper dalam Rangka Perakitan Cabai Hias di Universitas Siliwangi Hakim, Abdul; Benatar, Gilang Vaza; Yuliyani, Leny
Vegetalika Vol 14, No 1 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.101473

Abstract

Cabai, selain dimakan, dapat pula berfungsi sebagai tanaman hias yang mempunyai nilai keindahan. Berbagai nilai estetika yang dapat diambil antara lain adalah karakter pemendekan ruas, posisi bunga, dan warna buah muda. Pola warisan karakter itu diperlukan untuk pelaksanaan kegiatan seleksi. Informasi itu dimanfaatkan agar proses seleksi menjadi lebih efisien. Ciri pemendekan ruas pada tanaman cabai akan menjadikan bentuk tajuknya menjadi perdu, hal ini tentunya sangat menarik karena buah cabai akan terkelompok, posisi bunga dan warna buah muda juga dapat meningkatkan keindahan tanaman cabai hias. Tujuan penelitian ini adalah untuk mendapatkan informasi mengenai pola pewarisan karakter kualitatif yang berhubungan dengan pemendekan ruas, posisi bunga, dan warna buah muda sebagai kriteria seleksi dalam proses pemilihan calon cabai hias. Tanaman yang digunakan dalam penelitian ini adalah populasi tetua betina (P1) Seroja IPB yang memiliki karakter pemendekan ruas, posisi bunga tegak, dan warna buah hijau kekuningan, sedangkan tetua jantan (P2) Peter Pepper memiliki karakter buah berwarna hijau tua dan bentuk buah yang unik. Populasi dari tanaman cabai yang digunakan terdiri dari P1, P2, F1, dan F2. Analisis data dilakukan dengan uji Chi-kuadrat untuk menetapkan rasio Mendel dalam populasi F2. Temuan penelitian mengindikasikan semua karakter yang dipengaruhi oleh satu gen. Seluruh karakter diatur oleh satu gen dengan rasio 3 (dominan): 1 (resesif). Karakter pemendekan ruas, posisi bunga tegak, dan warna buah hijau tua adalah karakter yang bersifat resesif. Karakter resesif ini akan berguna sebagai kriteria seleksi karena tanaman hasil seleksi yang ditanam di generasi berikutnya tidak akan mengalami segregasi, sehingga tanaman akan lebih cepat seragam.
Strengthening Farming Businesses in the Environmentally Friendly Agriculture Program in Calingcing Village, Tasikmalaya Yuliyani, Leny; Dwy Fitria, Anita; Vaza Benatar, Gilang; Permana, Indra
IJECS: Indonesian Journal of Empowerment and Community Services Vol. 6 No. 1 (2025)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ijecs.v6i1.5871

Abstract

The community empowerment program that partners with KWT Dahlia was created to utilize underutilized local resources such as household waste, harvest residues, and clove plants that can be made into local microorganisms, organic fertilizers, and botanical pesticides to support environmentally friendly agriculture in Calingcing Village. This community empowerment uses the PRA (Participatory Rural Appraisal) approach. The basic principle of this approach is to fully involve the community in every stage of the activity with a focus on participation based on the principle of learning from the community, the active role of the community as the main subject, the exchange of knowledge and experience between community members, and the role of outsiders as facilitators. The results of the activity showed that there was an increase in the knowledge of KWT Dahlia members by 66.7% in the introduction of sustainable environmentally friendly agriculture, the practice of using PUTK and pH meters. While in the assistance to strengthen environmentally friendly farming, there was an increase in knowledge of 94.4%. The results of the activity evaluation showed that according to KWT Dahlia members, the material provided was beneficial. As many as 88.9% of KWT Dahlia members stated that this community empowerment activity was very beneficial. The level of ease of the material according to 83.3% of KWT Dahlia members is quite easy to understand. While the level of novelty of the material provided is 94.4% of respondents answered new things. And the most important thing is that 66.7% of KWT Dahlia members are very enthusiastic and 33.3% are enthusiastic about implementing the technology and innovation provided by the community service team. Keywords: Participatory Rural Appraisal, Eco-friendly farming, farming
Financial Management in Agri business: Capital Optimization and profitability Yuliyani, Leny; Rofatin, Betty; Hartoyo, Tedi
Maneggio Vol. 2 No. 2 (2025): Maneggio-Apr
Publisher : PT. Anagata Sembagi Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62872/49g4rz10

Abstract

This study examines the role of financial management in agribusiness business with a focus on capital optimization and increased profitability. Through the Systematic Literature Review (SLR) method of a number of articles and journals published between 2020 and 2025, it was found that effective capital management, including working capital planning, cost control, and appropriate resource allocation, are key factors in supporting the continuity and growth of agribusiness businesses. In addition, there is a significant positive relationship between capital optimization and profitability, where business actors who implement adaptive and data-driven financial strategies obtain higher profit margins. The research also revealed that access to external financing plays an important role in supporting capital optimization, even though small and medium-scale agribusiness actors still face various obstacles in accessing such financing. The use of information technology and digital financial management systems is a strategic solution to improve the accuracy of financial recording and decision-making quickly and precisely. These findings underscore the need to develop professional and integrated financial management capacity to increase the profitability and competitiveness of agribusiness businesses in the digital era. This research provides the basis for the development of financial management models and strategies that are applicable in the agribusiness sector.
PEMANFAATAN PSEUDOMONAS AERUGINOSA UNTUK PENINGKATAN KUALITAS KOMPOS KERTAS DAN PENDEGRADASI LOGAM BERAT Fitria, Anita Dwy; Yuliyani, Leny; Febryani, Noor; Alfath, Jusan Zaki; Sundawa, Rendi; Oktavia, Revina
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 2 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.2.5

Abstract

Improving the quality of compost paper is important to increase the availability of nutrients and reduce heavy metals. The quality of compost paper can be improved by using Pseudomonas aeruginosa bacteria, which can help mineralize nutrients and break down or convert heavy metals into less harmful forms. This study used a completely randomized design with five treatments in different concentrations of Pseudomonas aeruginosa bacteria (10%, 15%, 20%, and 25%). The analysis parameters used were pH H2O, Total N, organic C, C:N, Pb and Hg in the resulting compost. The results showed that the KK3 treatment produced higher pH H2O and Total N than other treatments. The availability of Pb metal on KK3 produced a relatively smaller value compared to other treatments, likewise, although it was not significantly different from C. The correlation results showed no significant relationship (p>0.05) between increasing doses of Pseudomonas aeruginosa and the availability of nutrients and heavy metals. The mineralization and incubation processes were factors in the study of improving the quality of compost by using Pseudomonas aeruginosa.
Sub-Optimal Dry Land Management: Potential for Local Food Cultivation of Dioscorea sp. (Gembili) to mitigate food security in Sukoharjo Regency, Central Java Fitria, Anita Dwy; Helbawanti, Octaviana; Yuliyani, Leny; Nuryaman, Hendar; Hakim, Abdul; Benatar, Gilang Vaza
Plantropica: Journal of Agricultural Science Vol. 9 No. 1 (2024)
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

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Abstract

Land in Tawangsari District, Sukoharjo Regency had a limiting factor in the form of water availability. One of the local commodities cultivated for generations on dry land in this region is gembili (Dioscorea sp.). However, the gembili cultivation process has not produced optimal productivity and is threatened with extinction. Therefore, gembili cultivation and use of dry land need to be optimized by carrying out integrated land management. The aim of utilizing dry land is to increase local food production and sustainability as alternative food and maintain national food security. This research was conducted using data on productivity, quantity and type of fertilizer obtained through interviews with gembili farmers and secondary data on soil types obtained from BPP Tawangsari District, Sukoharjo Regency. The results showed that grumusol and lithosol soil types had no significant effect (p > 0.05) on gembili productivity. Providing organic + inorganic fertilizer with giving organic fertilizer without a combination produced values that were not significantly different (p > 0.05). However, the average productivity results were sequentially from grumusol and lithosol (6.1 ton.ha-1 and 7.1 ton.ha-1). Meanwhile, the use of organic fertilizer is 8.06% higher compared to organic fertilizer + inorganic fertilizer. The results of the multiple regression test for organic fertilizer had a significant effect (p < 0.05) on the productivity of Dioscorea sp..
Increasing Economic Value in The Utilization of Goat Manure Into Organic Fertilizer in Cibeuti Village, Kawalu Tasikmalaya Nirwanto, Yogi; Mutiarasari, Nurul Risti; Yuliyani, Leny; Salam, Rudhiana
Asian Journal of Community Services Vol. 3 No. 1 (2024): January 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ajcs.v3i1.6617

Abstract

Goat manure is livestock waste which, if not processed properly, can cause several problems., but has economic value because it can be used as organic fertilizer. The objectives of this service are (1) to increase the capacity of livestock farmers in optimizing the use of livestock waste into organic fertilizer, (2) to reduce environmental pollution resulting from livestock waste, and (3) to increase the economic value of the results of processing this waste. This service is carried out using the training method for making organic fertilizer using Stardec technology. The results of service activities include partners being able to make organic fertilizer from animal waste using Stardec technology. Waste from livestock in the form of goat manure, feed waste and used cage bedding can be utilized properly so as to reduce environmental pollution. Apart from that, farmers and the public can use goat manure to make organic fertilizer which can be bought and sold or used for personal use. This service program received a good response from participants and the satisfaction level of training reached 80% of participants who were satisfied with this activity. The benefits of this training and in the future the production of organic fertilizer can help the economy of the surrounding community.
Co-Authors Abdul Hakim Abdul Hakim Abiyuna, Thaufan Alfath, Jusan Zaki Bakri, Asri Ady Benatar, Gilang Vaza Betty Rofatin Dwi Apriyani, Dwi Dwy Fitria, Anita Eka, Andi Primafira Bumandava Febryani, Noor Fitria, Anita Dwy Gilang Vaza Benatar Hartoyo, Tedi Helbawanti, Octaviana Hendar Nuryaman Indra Permana, Indra Mutiarasari, Nurul Risti Nirwanto, Yogi Oktavia, Revina Salam, Rudhiana Sundawa, Rendi Vaza Benatar, Gilang