Universitas Diponegoro: Undip E-Journal System (UEJS) Portal
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Factors Contributing to Corporate Farming Adoption Decision and Their Impact on Farmers’ Human Resources Performance
Full text linkCorporate farming enhances agricultural efficiency and productivity, boosting sectoral competitiveness. Despite the Indonesian government’s efforts to establish corporate farming in multiple districts, the outcomes have fallen short of expectations. This study investigates factors influencing farmers’ decisions to adopt corporate farming and its effects on improving farmers' human resource (HR) performance. Key factors analyzed include support from farmer groups (Poktan), government, social networks, partnerships with the Business and Industrial World (DUDI), and initiator roles. Using data from 142 farmers in Temanggung and Wonosobo districts, collected through structured questionnaires and analyzed with SEM via SmartPLS 3.0, the study reveals that farmer decisions to adopt corporate farming are significantly influenced by Poktan support, government support, social support, and the initiator role. However, these decisions have no significant impact on HR performance. On the other hand, Poktan support, government support, and partnerships with DUDI directly enhance HR performance. To promote corporate farming, the study emphasizes the importance of strengthening Poktan, government, and social supports, alongside initiator roles. Furthermore, corporate farming activities require support from a highly skilled farmer workforce. The study also highlights the role of external factors, like DUDI partnerships, in improving HR performance. By integrating variables from the Technology Acceptance Model (TAM) into the agricultural sector, this study enriches the literature on corporate farming adoption and its impact on HR performance
Effects of Workforce, Tax Revenue, Unemployment, and Technological Advancement on Indonesia's Economic Development
Full text linkInflation and unemployment are trade-offs for economic growth, and prolonged unemployment lowers GDP. With a GDP growth of 5.05% in 2023, Indonesia showed its resilience and strategic adaptability in the face of global economic uncertainty. This research examined factors influencing Indonesia's economic growth using macroeconomic indicators and time series data from 1974 to 2023. Stationarity tests (ADF and PP unit roots) and Johansen's cointegration confirmed long-term relationships among eight variables. The ARDL model investigated short and long-term dynamics, including CUSUM/CUSUMQ plots, SMPAE, and U-Theil inequality to assess causal relationships and model stability. ARDL results revealed that labor force participation, tax revenue, trade openness, urban population, unemployment, and technological advancement significantly impacted Indonesia's economic growth. Tax revenue, trade openness, foreign direct investment, and technological advancement positively influenced short-term growth. Short-run dynamics showed immediate economic adjustments affecting macroeconomic indicators and growth. The research determined that labor force participation, tax revenue, trade openness, urbanization, unemployment, foreign direct investments, and technological advancement were crucial for Indonesia's economic growth. The study suggests allocating resources to training, education, and skill development programs to boost workforce efficiency. The government should promote domestic production of tradable commodities, employ strategic tariffs and subsidies, and promote competitive sectors. The administration should nurture innovation, enhance access to technology, and invest in education. The government should improve tax collection, expand the tax base, and direct revenue toward growth-stimulating projects. Studi about interaction on macroeconomic indicators supporting agriculture development strategy
Profitability Analysis of Urban Dairy Cattle Farming in Farmer Groups in Jakarta Metropolitan Area
Full text linkDairy cattle farming contributes significantly to global food security, yet research on urban dairy operations remains limited, particularly in metropolitan areas of developing countries where land scarcity and high operational costs present unique challenges. This study quantifies the profitability of smallholder dairy operations in Jakarta by examining production costs, revenue streams, return-cost ratios, and net profit margins under urban resource constraints. A survey conducted from October to November 2024 involving 56 active farmers used structured questionnaires and field observations. A Cobb-Douglas production framework analyzed through ordinary least squares regression identified determinants of milk output, complemented by descriptive examination of producer demographics, resource utilization, and economic indicators. Farmers averaged 49 years old with 13 years of formal education and 24 years of farming experience. Input allocation was found to be unbalanced, with forage and concentrates below recommended levels while tofu pulp and labor were excessive. Regression analysis indicated that lactating cow numbers and concentrate use significantly influenced milk production, while other inputs showed no significant effect. Feed, particularly tofu pulp, dominated the cost structure, with average annual production cost of IDR 280.2 million. Total annual revenue reached IDR 384.6 million, yielding net income of IDR 104.4 million. Urban dairy farming in Jakarta proved economically feasible with an R/C ratio of 1.37 and profitability of 37.27%. Metropolitan dairy production remains economically viable for small-scale operators through optimized feeding protocols, proactive animal healthcare, strategic policy support including input price stabilization and urban agricultural zoning, alongside revenue diversification for enhanced operational resilience
Urgensi Pengaturan Hybrid Contract dalam Pengalihan Utang (Take Over) Untuk Mewujudkan Kepastian dan Keadilan Hukum
Full text linkDebt transfer (take over) in contemporary financing practices is increasingly conducted through a hybrid contract structure, which has not been explicitly regulated in statutory law. This condition potentially generates legal uncertainty and injustice for the parties involved, particularly debtors. Therefore, this study examines the urgency of regulating hybrid contracts in debt transfer mechanisms in order to ensure legal certainty and justice. This research employs a normative legal research method with statutory, conceptual, and systematic approaches. These approaches are used to assess the conformity of hybrid contract practices with the principles of contract law and the prevailing positive legal norms in Indonesia. The findings indicate that the absence of specific regulation on hybrid contracts in debt transfer results in normative fragmentation between general civil law, financing law, and modern contractual practices. Such fragmentation leads to ambiguity regarding the legal basis of agreements and weakens legal certainty. Furthermore, this study reveals a normative vacuum concerning the legal standing of hybrid contracts in debt transfer (take over) within the Indonesian civil law system. In practice, take over transactions cannot be purely classified as novation, subrogation, or assignment (cessie), but rather constitute a mixed contractual arrangement that has not been explicitly recognized under positive law. This condition creates ambiguity in determining the applicable legal regime, which in turn affects the validity of agreements and the continuity of collateral. Accordingly, this study underscores the urgency of formulating a normative regulatory framework for hybrid contracts that clearly defines their legal status, stipulates the legal consequences for both principal and accessory obligations, and ensures legal certainty and protection for the parties, particularly debtors
Eksplorasi Potensi Bakteri Asosiasi Polymesoda erosa Sebagai Sumber Antibakteri dan Enzim untuk Bioindustri
Full text linkThe bivalve Polymesoda erosa is known to harbor symbiotic bacteria that potentially produce secondary metabolites and extracellular enzymes with applications in health and bioindustry. This study aimed to: (1) characterize bacterial isolates associated with P. erosa from Semarang waters, and examine the enzymatic activity of potential isolates.. The research methods included bacterial isolation and purification using Nutrient Agar (NA), colony morphology characterization and Gram staining, antibacterial activity testing using the agar plug method against Escherichia coli and Staphylococcus aureus, and enzymatic assays (protease, amylase, lipase) on selective media. Selected isolates were further identified molecularly through 16S rRNA gene sequencing, BLAST analysis via NCBI, and phylogenetic tree construction. The results revealed five bacterial isolates with distinct morphological characteristics. Most isolates were Gram-positive with coccus, diplobacilli, and staphylococci forms. One isolate, B1.5.1 (a2), showed antibacterial activity against S. aureus. Enzymatic assays demonstrated that three isolates exhibited proteolytic, amylolytic, and lipolytic activities, with the highest activity recorded in isolate B1.5.1 (a2). Molecular identification confirmed that this isolate belonged to Enterobacter cloacae (100% homolog. In conclusion, the symbiotic bacteria of P. erosa exhibit diversity and possess significant potential as producers of antibacterial compounds and extracellular enzymes, highlighting their prospective role in sustainable bioindustry development
Benefits of Sargassum sp. Extract for Feed Supplementation on the Growth and pH Shock Resistance of Zebrafish (Danio rerio)
Full text linkSargassum sp. is an abundant marine biological resource in Indonesia rich in bioactive compounds, yet its utilization as a feed supplement in fish culture remains limited. Feed represents the highest cost component in aquaculture, necessitating economical natural additives to improve fish performance and their resistance to environmental stressors such as pH fluctuations. This research aimed to evaluate the effect of Sargassum sp. water extract, obtained using acidic (pH 3) and alkaline (pH 12) methods, on the survival rate, growth, and resistance of zebrafish (Danio rerio) to extremely low pH shock. The study employed a Completely Randomized Design (CRD) with nine treatments (control, four alkaline extract doses, and four acidic doses) over a 30-day rearing period. Doses were determined based on BSLT toxicity tests, which indicated that both extracts were non-toxic (LC50 > 1000 ppm). The parameters observed included survival rate, absolute weight gain, and mortality during a pH 3 shock test. The results showed that supplementation had no significant effect on survival rate (P>0.05). However, all extract treatments (acidic and alkaline) significantly increased absolute weight gain (P<0.05) compared to the control, with the highest average weight found at the lowest alkaline Sargassum sp. extract 1.375 ppm. Fish supplemented with the extract showed significantly lower mortality in the low pH shock test (P<0.05), with the best resistance value observed at the lowest acidic treatment (1,875 ppm). These findings indicate that Sargassum sp. extract has the potential as an effective natural feed supplement to promote growth and enhance the physiological resistance of fish to environmental stress, even at low concentrations
Dispensasi Perkawinan dalam Pelaksanaan Perkawinan di Bawah Umur
Full text linkPenelitian ini bertujuan untuk memberikan pemahaman pentingnya perkawinan dan Dispensasi Perkawinan bagi masyarakat yang akan melangsungkan perkawinan apabila perkawinan dilangsungkan oleh pasangan yang belum cukup umur menurut Undang – Undang di Kabupaten Wonogiri dan Perlu pemahaman tentang tata cara pengajuan perkawinan di bawah umur bagi, Kabupaten Wonogiri. Hasil penelitian menunjukan bahwa Kegiatan pengabdian kepada masyarakat ini merupakan salah satu langkah awal bagi civitas akademika untuk lebih berperan dalam menyelesaikan permasalahan perkawinan di Indonesia melalui program penyuluhan hukum dengan pembahasan mengenai dispensasi perkawinan. Dengan kegiatan penyuluhan hukum ini diharapkan dalam memberikan pemahaman kepada masyarakat terkait dengan dispensasi perkawinan. Setelah itu masyarakat di Kabupaten Wonogiri diharapkan dapat memperhatikan syarat – syarat sah yang harus dipenuhi untuk melangsungkan perkawinan
Pengaruh Air Kelapa Pada Media MS Terhadap Pertumbuhan Tunas Dari Eksplan Cormus Saffron (Crocus Sativus L.) Secara In vitro
Full text linkSaffron (Crocus sativus L.) merupakan tumbuhan steril dengan kromosom triploid, sehingga perbanyakan secara generatif tidak dapat dilakukan. Metode kultur jaringan menjadi salah satu alternatif untuk membudidayakan saffron. Tujuan penelitian adalah mengkaji pengaruh air kelapa pada media MS terhadap pertumbuhan tunas eksplan cormus Saffron dan mengetahui konsentrasi air kelapa yang optimum sehingga meningkatan pertumbuhan tunas Saffron. Metode yaitu penanaman eksplan cormus Saffron ke dalam media MS yang ditambah air kelapa pada konsentrasi 0%, 5%, 10%, 15%, 20%. Penelitian menggunakan rancangan acak lengkap dengan faktor tunggal (konsentrasi air kelapa) dengan 4 ulangan. Data dianalisis dengan ANOVA dilanjutkan dengan uji DMRT. Pertumbuhan eksplan diamati selama 8 minggu. Parameter yang diamati yaitu waktu muncul tunas, akar, dan daun; jumlah tunas, akar, dan daun. Hasil penelitian menunjukkan bahwa penambahan air kelapa tidak menginisiasi pertumbuhan akar, tunas, dan daun cormus saffron. Air kelapa dengan konsentrasi 0% - 20% tidak menstimulasi pertumbuhan akar, tunas, dan daun cormus saffron. Air kelapa belum mampu memecahkan dormansi cormus saffron.Saffron (Crocus sativus L.) is a sterile plant with triploid chromosomes, making generative propagation unfeasible. Tissue culture offers an alternative method for saffron cultivation. This research aimed to investigate the impact of coconut water in Murashige and Skoog (MS) medium on the growth of saffron corm explant shoots and to identify the optimal coconut water concentration for enhancing saffron shoot growth. The experiment involved planting saffron corm explants in MS medium supplemented with coconut water at concentrations of 0%, 5%, 10%, 15%, and 20%. A completely randomized design with a single factor (coconut water concentration) and four replications was employed. Data were analyzed using ANOVA followed by the Duncan's Multiple Range Test (DMRT). Explant growth was monitored over an 8-week period, with observations focusing on the timing of shoot, root, and leaf emergence, as well as the number of shoots, roots, and leaves. The results indicated that the addition of coconut water did not initiate the growth of saffron corm roots, shoots, or leaves. Coconut water at concentrations ranging from 0% to 20% did not stimulate the growth of saffron corm roots, shoots, or leaves, and it was unable to break the dormancy of saffron corms
Desain Algoritma Inverter pada Pembangkit Listrik Tenaga Surya: Sistematik Review
Full text linkPenelitian terbaru dalam dekade terakhir, banyak penulis semakin tertarik pada desain algoritma inverter DC/AC yang diterapkan pada pembangkit listrik tenaga surya. Kontribusi ini merupakan tinjauan sistematis dengan metodologi PICOC, yang mengkaji kriteria desain utama di balik meningkatnya minat inverter. Peningkatan dalam jumlah artikel baru terkait topik inverter terus meningkat setiap tahunnya. Artikel review ini mendalami tren dan keterbatasan alogritma inverter DC/AC terbaru, yang bertujuan untuk meningkatkan kinerja dan efisiensi pembangkit listrik tenaga surya dengan memanfaatkan penggunaan inverter dengan berbagai algoritma yang digunakan. Mengidentifikasi artikel algoritma inverter DC/AC dari tahun 2019 hingga 2024,dengan hasil yang ditemukan 15 artikel yang dipilih dari 641 artikel yang diambil dari sumber database Scopus, yang berisi desain yang terkait dengan algoritma inverter DC/AC. Review ini menyimpulkan beberapa mode kegagalan yang menyebabkan ketidaktersediaan atau kerugian efisiensi pada desain saat ini. Temuan hasil artikel penelitian menunjukan bahwa 15 artikel dengan konstribusi dalam desain algoritma DC/AC dengan topologinya. Systematic Literature Review (SLR) kali ini dapat menjadi pedoman untuk peneliti dalam mengembangkan algoritma inverter DC/AC pada sistem pembangkit listrik tenaga surya di masa mendatang
Community Perception of Water Distributive Justice: The Case of Lebak Siliwangi, Bandung
Full text linkAccess to clean water in urban areas is generally higher than in rural areas. However, clean water services are not always optimal or in accordance with established standards. Fair water distribution is essential to ensure that clean water is provided to the community in line with the principles of quality, quantity, continuity, accessibility, and affordability, both from formal and informal sources, and for different community groups, including marginalized and low-income households. This study aims to examine community perceptions regarding the fairness of clean water service distribution in Lebak Siliwangi Village, Bandung City. A qualitative descriptive approach was employed, using data obtained through observations, interviews, and literature review. The findings reveal that significant gaps remain in water service distribution. Water source from Local Water Supply Utility (PDAM) generally provides better service but does not reach all community groups equally. Meanwhile, informal sources cover wider areas but face persistent challenges related to quality, quantity, and continuity. Community perceptions indicate that tariffs in some areas are still considered disproportionate to service quality, particularly for households with greater water needs. These results suggest that optimizing distribution networks, monitoring water quality, improving infrastructure, and encouraging community participation are key strategies to ensure inclusive and equitable clean water services