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All Journal ETIKONOMI BIOTROPIA - The Southeast Asian Journal of Tropical Biology Indonesian Journal of Agricultural Science JAM : Jurnal Aplikasi Manajemen International Journal of Advances in Data and Information Systems
Yudhistira Nugraha
Indonesia Center for Rice Research Jl. Raya 9 Sukamandi Subang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Immunology & microbiology Veterinary

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RESPONSE OF SUB1 INTROGRESSION LINES OF RICE TO VARIOUS FLOODING CONDITIONS Nugraha, Yudhistira; Vergara, Georgiana V.; Mackill, David J.; Ismail, Abdel Bagi
Indonesian Journal of Agricultural Science Vol 14, No 1 (2013): April 2013
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Two types of floods can be happen in rice crops, i.e. flash floods and  stagnant floods. Flash floods cause complete submergence for up to 2 weeks, while stagnant floods (SF) could partially submerge part of rice  plant. To overcome yield loss due to the floods, introgression of SUB1 gene, known as a gene suppressing cell elongation and carbohydrate  metabolism, to rice genotype can increase plant tolerance to complete submergence for 10 days or more. The study aimed to evaluate the response of 18 rice genotypes, including the recently developed sixth pair SUB1 near isogenic lines (NILs) of mega-rice varieties (Swarna, Sambha Mahsuri, IR64, TDK1, BR11, and CR1009), to various flooding conditions. The rice genotypes were planted at field ponds at Los Banos, Philippines, in the wet season (WS) of 2009. The treatments were 15 days  submergence, SF, SF follows submergence and normal conditions. Each treatment was arranged in completely randomized block design with threereplications. The results showed that the SUB1 introgression rice lines had higher survival compared to the non-SUB1 and did not much elongate their shoots during submergence. Nevertheless, under SF the rice genotypes should elongates their shoots to allow restoring contact with the air. SF and SF follows submergence decreased the panicle number, grainnumber per panicle and panicle fertility. Consequently, the yield declined. It suggests that sensitive genotypes are mostly sourcelimited during grain filling. The SUB1 introgression lines had higher chlorophyll concentration and less depletion in soluble sugar and starch after submergence. Under SF, soluble sugar and starch contents between the SUB1 NILs and  non-SUB1 lines were not significantly different. Introgression of the SUB1 into high-yielding varieties improved submergence tolerance without affecting yield potential. The study indicates that introgression of the SUB1 into taller type rice varieties should be done to compensate the effect of suppressed elongation.
Orchestrating Digital Economy to Foster Economic Resilience of Smart Cities: The Soft System Approach Subkhan, Farid; Maarif, Mohammad Syamsul; Rochman, Nurul Taufiqu; Nugraha, Yudhistira
ETIKONOMI Vol 24, No 1 (2025)
Publisher : Faculty of Economic and Business

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/etk.v24i1.39224

Abstract

Research originality: This study provides new practical knowledge on the digital economy model and strategy to drive the resilient economy of smart cities.Research objective: This study aims to develop a digital economy management model for smart cities, a resilient economy framework for smart cities, and digital economy strategies for smart cities.  Research methods: This study employed a soft system methodology (SSM)-action approach by involving 30 digital economy and smart city experts from Jakarta, Bandung, Semarang, Surabaya, Banyuwangi, and Makassar.Empirical result: This study has successfully developed the digital economy model for smart cities by which digital technology, digital services, and digital finance are the keys. The resilient economy of smart cities is primarily characterized by economies of scale, economic structure, and economic stability. Moreover, the strategies should mainly focus on developing infrastructure and application, digital governance and policy, and digital society.Implication: The policy maker must consider critical policy interventions of the digital economy model and economic resilience goals, including budget priorities to the key digital economy strategies.JEL Classification: M21, O14, O18, P25, R11How to Cite:Subkhan, F., Maarif, M. S., Rochman, N. T., & Nugraha, Y. (2025). Orchestrating Digital Economy to Foster Economic Resilience of Smart Cities: The Soft System Approach. Etikonomi, 24(1), 315 – 334. https://doi.org/10.15408/etk.v24i1.39224.
Analysis of MSME's Financial and Business Improvement Model through Digital Economy Services and Fintech Strategy Subkhan, Farid; Maarif, Mohammad Syamsul; Rochman, Nurul Taufiqu; Nugraha, Yudhistira
Jurnal Aplikasi Manajemen Vol. 22 No. 2 (2024)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jam.2024.022.02.10

Abstract

The development of digital technology contributes significant roles to businesses, including micro, small, and medium enterprises (MSMEs). It raises the digital economy and fintech services to the MSMEs market, such as peer-to-peer lending, digital payment, crowdfunding, digital assets, e-commerce, social commerce, etc. This research aims to analyze MSMEs financial and business improvement model by using MSME's digital economy products and fintech penetration strategy in Indonesia. This study employed a mixed research method by integrating the Delphi technique and the Analytical Hierarchy Process (AHP). The Delphi method was used to identify criteria or construct for the research framework, while AHP was used to evaluate and determine the score and priorities of the MSMEs financial performance criteria, business goals, digital economy's alternative products, and fintech penetration strategies. The Delphi method consists of round 1 - to explore the research framework, round 2 - to rank the research indicators, followed by AHP at round 3. The study involves 20 expert panels of MSMEs in greater Jakarta. This study found that the use of digital economy products - particularly fintech will enhance MSMEs' financial performance by increasing sales volume and business profits. It helps them achieving business goals by increasing their revenue and expanding their business. MSMEs need digital payment and mobile banking as vital fintech services. This study also provides strategic guidance to fintech players and government to effectively penetrate fintech products to MSMEs mainly through knowledge dissemination and digital knowledge improvement.
PROXIMATE, TANNIN, AND AMYLOSE IN SIX SORGHUM VARIETIES ACROSS TWO PLANTING SEASONS Muazam, Arif; Kristamtini, Kristamtini; Widyayanti, Setyorini; Nugraha, Yudhistira; Kasiamdari, Rina Sri; Setiadi Daryono, Budi
BIOTROPIA Vol. 32 No. 2 (2025): BIOTROPIA Vol. 32 No. 2 August 2025
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2025.32.2.2461

Abstract

ARTICLE HIGLIGHTS- Sorghum nutrition varies across varieties and growing seasons- Dry season increases starch and amylose content in some varieties- Rainy season enhances protein levels in sorghum grains- Genotype-environment interaction affects sorghum nutritional quality- Sorghum adaptation supports food diversification and climate resilienceABSTRACTSorghum (Sorghum bicolor (L.) Moench) is a potential staple food in Indonesia, offering an alternative to rice and corn due to its adaptability to marginal lands and drought tolerance. However, research on the impact of environmental factors, particularly different growing seasons, to the nutritional composition of sorghum varieties are still lacking. This study aimed to analyze the proximate contents of tannin and amylose in six sorghum varieties cultivated in two different planting seasons (wet and dry seasons). A Completely Randomized Design with three replications was applied in this experiment. The tested varieties included three newly developed superior varieties (Bioguma, Samurai, and Kawali) and three local varieties (Black Bonteb, Red Glutinous Sorghum, and KD4). The results showed that proximate composition varied across varieties and seasons. Starch content was generally higher in the dry season, with the highest observed in Kawali (64.16%) and Bioguma (63.11%), while the lowest was in Black Wareng (11.99%). Similarly, protein content peaked in Black Wareng (7.68%) and Red Glutinous Sorghum (7.37%), but was the lowest in Samurai (4.48%). Tannin levels also fluctuated by season, where Bioguma, KD4, and Kawali exhibited higher tannin content in the dry season, whereas Samurai, Red Glutinous Sorghum, and Black Bonteb had lower tannin levels. Notably, amylose content was significantly higher in Red Glutinous Sorghum (4.72%) and Black Bonteb (4.62%) across both seasons, contributing to their fluffier texture when cooked. These findings highlight the influence of environmental conditions on sorghum nutritional quality, reinforcing its potential for food diversification, including processed sorghum flour as a substitute for wheat flour.
Revisiting Cyber Threats in Government Sectors: A Systematic Review of Attacks, Challenges, and Policy-Level Defenses Nuraeni, Aisyah; Nugraha, Yudhistira; Aminanto, Muhamad Erza
International Journal of Advances in Data and Information Systems Vol. 6 No. 2 (2025): August 2025 - International Journal of Advances in Data and Information Systems
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/ijadis.v6i2.1404

Abstract

This paper presents a systematic literature review (SLR) based on the PRISMA framework, synthesizing 128 peer-reviewed studies published between 2020 and 2024, drawn from major scholarly databases. The review investigates cyber threats specifically targeting government institutions and identifies phishing, ransomware, malware, and denial-of-service (DoS) attacks as the most prevalent attack vectors affecting government sector environments. In addition to these threats, the study highlights persistent institutional limitations, such as outdated infrastructure, fragmented inter-agency coordination, limited technical capacity, and regulatory gaps, which hinder effective cybersecurity governance and response. To address these challenges, the review compiles both proactive and reactive mitigation strategies, emphasizing the need for SOC design principles such as scalability, interoperability, inter-agency coordination, and resilience in cyber operations. The paper synthesizes its findings into a taxonomy of threat profiles and contextual constraints, offering a foundational reference for building government-specific SOC models. It also outlines future research directions related to operational validation, capability maturity modeling, and institutional alignment in public-sector cybersecurity architectures. 
Co-Authors Abdel Bagi Ismail Aminanto, Muhamad Erza BUDI SETIADI DARYONO David J. Mackill Georgiana V. Vergara Kristamtini Kristamtini, Kristamtini M. Syamsul Maarif Muazam, Arif Nuraeni, Aisyah Nurul Taufiqu Rochman Rina Sri Kasiamdari Setyorini Widyayanti, Setyorini Subkhan, Farid