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Magelang City faces the challenge of limited land availability, with a total area of only 18.58 km2 and a high population density. Consequently, telecommunications infrastructure development requires a precise strategy. This study aims to analyze the business model and investment feasibility of Pole and Greenfield type telecommunication towers in Magelang City. Using a descriptive quantitative approach, this research processes secondary data from PT Dayamitra Telekomunikasi Indonesia by applying feasibility analysis based on Life Cycle Costing (LCC), Net Present Value (NPV), Internal Rate of Return (IRR), Break-Even Point (BEP), Payback Period (PP), and Benefit-Cost Ratio (BCR). The results indicate significant differences in cost structures; Pole towers proved to be more efficient, requiring an initial capital outlay of only 28.8% of the total capital required for Greenfield towers. Greenfield towers generated an NPV of Rp13.07 billion with an IRR of 20%, while Pole towers generated an NPV of Rp2.46 billion with a higher IRR of 23%. Pole towers have proven to offer a faster return on investment and better operational cost efficiency, making them the most strategic option to support network densification and the implementation of 5G technology in urban areas with spatial constraints like Magelang City.

This study aims to analyze the feasibility of implementing Solar-Powered Street Lighting (PJUTS) as an alternative lighting solution in Campus C of UNINDRA PGRI. The background of this research is driven by the high operational electricity costs of the existing conventional street lighting system and the need to transition toward clean energy. The analysis methods include a technical comparison of off-grid systems, an economic evaluation based on cost savings, and an assessment of environmental impacts. The technical analysis indicates that PJUTS is highly feasible due to its ability to operate independently without reliance on the national electricity grid, thereby ensuring lighting continuity during power outages. From an economic perspective, although the initial investment (CAPEX) is higher than that of conventional street lighting, the project is considered feasible as it eliminates monthly electricity bills permanently, resulting in long-term budget efficiency and financial benefits. The Payback Period analysis shows that the initial investment can be recovered through cumulative operational cost savings. Environmentally, the implementation of PJUTS significantly contributes to carbon emission reduction and supports the Green Campus vision through the utilization of renewable energy. Overall, the transformation of the existing street lighting system into PJUTS represents a strategic and feasible initiative that fulfills effectiveness, efficiency, and sustainability criteria.

The maintenance of non-aviation defense equipment (main weapon system) is a critical aspect in maintaining operational readiness. However, the Maintenance, Repair, and Overhaul (MRO) system in Indonesia still faces limitations due to manual reporting, inefficiency in spare parts management, and the lack of integration of the Life Cycle Cost (LCC) approach. This study aims to design and develop the Integrated Cavalry Monitoring and Maintenance System (ICMMS) based on a web application that integrates sensors, real-time data analytics, and LCC calculation. The prototyping method was used, involving design, development, integration, and testing phases on the Maung Tactical Vehicle and Anoa Armoured Personnel Carrier at PT Pindad. The results of the prototype implementation showed a significant increase in maintenance efficiency: damage reporting time decreased from ±3 hours to ±1 minute, critical component identification became 95% faster, and maintenance scheduling shifted from reactive to predictive. Additionally, the integration of the LCC algorithm allows for more accurate maintenance cost estimation, supporting technical and strategic decision-making. This study demonstrates that ICMMS based on LCC can be an innovative digital solution to enhance MRO effectiveness and operational readiness of non-aviation defense vehicles in Indonesia. It is expected that this system will improve the resilience and cost-effectiveness of managing Indonesia’s military vehicle fleet.

This study aims to analyze the effectiveness of raw material inventory control at the Kediri Wet Noodle business by comparing the traditional method with the Economic Order Quantity (EOQ) method. A descriptive quantitative approach was applied, utilizing EOQ, Safety Stock (SS), Re-order Point (ROP), and total inventory cost analysis. The results indicate that the traditional method leads to 24 purchase cycles per year with an inventory cost of IDR 4,320,000, without considering safety stock or re-order points. In contrast, the EOQ method shows an optimal purchase quantity of 1,421 sacks (35,525 Kg) with five purchase cycles per year, an inventory cost of IDR 574,455, a Safety Stock of 67 sacks (1,675 Kg), and a Re-order Point of 107 sacks (2,675 Kg). Therefore, the EOQ method reduces inventory costs by up to 86% compared to the traditional method. Nevertheless, its limitation lies in the exclusion of raw material shelf life and storage condition factors.

Urban logistics is a significant source of carbon emissions in Indonesia, and effective decarbonization strategies are required. EVs offer a promising solution, but their impact requires quantitative evaluation within the local context. This study analyzes the effect of adopting an electric van fleet on total well-to-wheel carbon emissions within an urban distribution network in Indonesia. This study employs a comparative case study method. A baseline scenario consisting of 25 diesel vans is compared to an intervention scenario where electric vans replace the entire fleet. The emission analysis was conducted using the WtW framework, utilizing specific emission factors for diesel fuel from the IPCC (2006) and the Java-Madura-Bali (JAMALI) grid emission factor from IESR (2023) to ensure contextual relevance. The transition to an electric fleet successfully reduces the total well-to-wheel carbon footprint by 13.63%. This reduction is equivalent to an absolute CO2 emission decrease of nearly 3 tons of CO₂ per month. Nevertheless, indirect emissions from electricity generation still contribute a significant carbon footprint, indicating that the national energy mix is highly dependent on the environmental benefits of EVs. This study concludes that fleet electrification is a viable and effective decarbonization strategy for Indonesia’s logistics sector, even with the current state of the electricity grid. However, fleet decarbonization efforts must run in parallel with policies for a national transition toward renewable energy to maximize the emission reduction potential of electric mobility. Future research should include the total cost of ownership (TCO) and life cycle assessment (LCA) for a more holistic evaluation.

Panji Kahirupan Dance is a Cirebonese mask dance created by H. Taufik Hidayat, the founder of Sanggar Ki Bagus Rangin. This dance portrays the journey of human life, from pre-birth to adulthood, inspired by the changing characters (wanda) of the Cirebon mask tradition. This study aims to describe and analyze the symbolic meanings embedded in the Panji Kahirupan Dance. The research uses a qualitative method with a semiotic approach, allowing the researcher to explore both the denotative and connotative meanings of the symbolic elements in the dance. Data were collected through observation, interviews, and documentation, and validated using triangulation of techniques and sources. The data analysis involves data reduction to select relevant information, data presentation to synthesize findings, and conclusion drawing to interpret the symbolic meanings of each performance element. The costumes carry symbolic meanings through their colors: white represents the sanctity of life’s beginning, yellow symbolizes spirit, and red denotes ambition. The soft gamelan music contributes to a spiritual and contemplative atmosphere. The floor patterns, such as circles and straight lines, symbolize the life cycle and life’s purpose.

This study aims to analyze the maintenance strategy of railway lines in West Sumatra using the Life Cycle Cost (LCC) approach to determine the most economically efficient and sustainable maintenance option. The main issues raised are the high cost of reactive maintenance and the risk of operational disruption due to track damage. The research method involved collecting construction, operational, and maintenance cost data from railway operators, as well as LCC-based scenario simulations to compare preventive and reactive maintenance strategies. The results of the analysis show that the preventive maintenance strategy results in lower total life cycle costs, compared to the reactive strategy. In addition, the preventive strategy also supports operational sustainability by minimizing the risk of service disruption and improving user safety. SWOT analysis shows that LCC implementation has great potential to improve budget efficiency and support local economic growth, although challenges such as data limitations and natural disaster risks need to be mitigated. This research concludes that an LCC-based approach can be the basis for designing more effective, efficient and sustainable railway maintenance policies. Recommendations include prioritizing preventive maintenance, using monitoring technology, and strengthening supporting policies.

Pengendalian biaya dalam proyek konstruksi sangat penting untuk memastikan keberlangsungan proyek. Dalam proyek konstruksi, memilih bahan dan metode yang sesuai dapat membantu dalam efisiensi biaya selama pelaksanaannya. Pemilihan material dan metode alternatif tidak otomatis mengurangi fungsi atau kualitas proyek. Oleh karena itu, analisis biaya proyek diperlukan untuk mengawasi aspek – aspek tersebut. Metode yang digunakan untuk mengoptimalkan biaya dalam suatu proyek konstruksi adalah dengan menerapkan value engineering. value engineering merupakan upaya yang sistematis dan terorganisir untuk mencapai fungsi yang diinginkan dengan biaya paling ekonomis tanpa mengorbankan kualitas atau kinerja. Dengan menerapkan value engineering pada 3 item pekerjaan arsitektur pada proyek pembangunan SDN 2 Panjer dengan mengubah desain eksisting dengan alternatif desain  baru, mendapat penghematan biaya pada pekerjaan penutup atap sebesar Rp 21.862.305,86 atau 11,16% dari biaya pekerjaan desain eksisting, pekerjaan plafon sebesar Rp 1.228.792,01 atau 1,42% dari biaya pekerjaan desain eksisting, pekerjaan lantai dan dinding keramik sebesar Rp 9.835.732,08  atau 7,65% dari biaya pekerjaan desain eksisting, penghematan tersebut berdasarkan pada analisis Life Cycle Cost. Pengendalian biaya dalam proyek konstruksi sangat penting untuk memastikan keberlangsungan proyek. Dalam proyek konstruksi, memilih bahan dan metode yang sesuai dapat membantu dalam efisiensi biaya selama pelaksanaannya. Pemilihan material dan metode alternatif tidak otomatis mengurangi fungsi atau kualitas proyek. Oleh karena itu, analisis biaya proyek diperlukan untuk mengawasi aspek – aspek tersebut. Metode yang digunakan untuk mengoptimalkan biaya dalam suatu proyek konstruksi adalah dengan menerapkan value engineering. value engineering merupakan upaya yang sistematis dan terorganisir untuk mencapai fungsi yang diinginkan dengan biaya paling ekonomis tanpa mengorbankan kualitas atau kinerja. Dengan menerapkan value engineering pada 3 item pekerjaan arsitektur pada proyek pembangunan SDN 2 Panjer dengan mengubah desain eksisting dengan alternatif desain  baru, mendapat penghematan biaya pada pekerjaan penutup atap sebesar Rp 21.862.305,86 atau 11,16% dari biaya pekerjaan desain eksisting, pekerjaan plafon sebesar Rp 1.228.792,01 atau 1,42% dari biaya pekerjaan desain eksisting, pekerjaan lantai dan dinding keramik sebesar Rp 9.835.732,08  atau 7,65% dari biaya pekerjaan desain eksisting, penghematan tersebut berdasarkan pada analisis Life Cycle Cost.

Eco-pharmaceuticals are an emerging solution in the pharmaceutical industry, aimed at reducing environmental impacts through sustainable production, distribution, and disposal practices. The growing concern over pharmaceutical waste, especially in low-resource settings, highlights the need for greener alternatives. Pharmaceutical residues, often not fully removed during conventional wastewater treatments, contribute significantly to water pollution and disrupt aquatic ecosystems. Eco-pharmaceuticals address these issues by using biodegradable materials, environmentally friendly production methods, and safer disposal techniques, thereby reducing the persistence of pharmaceutical contaminants in the environment. Life-Cycle Assessment (LCA) is an essential methodology used to evaluate the environmental impact of pharmaceutical products, considering all stages from raw material extraction to end-of-life disposal. The results of LCA show that eco-pharmaceuticals significantly reduce water pollution potential and carbon emissions when compared to conventional drugs. Additionally, they offer a more resource-efficient alternative by minimizing waste generation during production and ensuring safer end-of-life disposal. Despite the clear environmental benefits, challenges remain in transitioning to eco-pharmaceuticals, particularly in low-resource settings where infrastructure for waste management is limited. Cost and availability of eco-pharmaceuticals may also pose barriers to widespread adoption. However, with appropriate policy interventions, public education, and technological innovations, these challenges can be addressed. This study underscores the potential of eco-pharmaceuticals in mitigating environmental degradation while offering a sustainable and cost-effective alternative to traditional pharmaceuticals, particularly in regions most vulnerable to pollution.

The increasing use of conventional medical supplies has led to significant environmental challenges due to waste accumulation and the chemical exposure risks faced by healthcare workers. Despite ongoing efforts to adopt environmentally friendly materials, there is a lack of comprehensive studies that combine Life-Cycle Assessment (LCA) with direct monitoring of worker exposure. This study aims to compare the environmental and health impacts of biodegradable versus conventional medical supplies by assessing their life-cycle stages, energy consumption, carbon footprint, and hazardous exposure risks. A novel comparative approach was adopted, integrating LCA to evaluate raw material extraction, production, usage, and disposal processes, alongside monitoring the occupational exposure to chemical residues from medical supplies. The results indicate that biodegradable medical supplies reduce environmental footprint by approximately 40%, lower energy consumption, and generate less waste compared to conventional plastics. Additionally, the study shows that biodegradable materials pose a significantly reduced risk of chemical exposure to healthcare workers, offering a safer alternative. However, biodegradable materials present limitations, such as availability, durability, and higher initial costs, which need to be addressed for widespread implementation. The findings emphasize the importance of integrating sustainable practices in healthcare settings, offering actionable insights for hospital management and regulatory bodies. Future research is recommended to further explore the cost-effectiveness of biodegradable materials, conduct large-scale trials, and investigate alternative material types. This study contributes to the growing body of knowledge on environmental sustainability and occupational safety in healthcare, providing a valuable framework for future policy and operational decisions.

Through literature analysis, this study identifies various concepts, methods and practices related to Green Accounting. This concept includes carbon footprint measurement, product life cycle analysis, environmental impact evaluation and sustainability reporting. Methods such as input-output analysis, environmental cost analysis, and ecological value evaluation are used to measure and account for the environmental impact of a company's activities. The research results show that implementing Green Accounting can help companies identify opportunities for resource efficiency, reduce environmental risks, improve the company's image, and meet stakeholder demands regarding sustainability. However, challenges such as limited data, measurement complexity, and lack of uniform standards are still obstacles in implementing Green Accounting. The global perspective in this study highlights differences in the acceptance and implementation of Green Accounting in various countries and industrial sectors. Several developed countries have adopted regulations that encourage sustainability reporting, while developing countries still face challenges in integrating Green Accounting principles into their business practices. Thus, this research concludes that Green Accounting has an important role in encouraging corporate sustainability globally. Further research is needed to overcome implementation challenges and increase understanding of the positive impacts that can be generated through implementing Green Accounting in the context of corporate sustainability.

The product life cycle was first used in US Department of Defense military matters, where it applied mainly to DoD procurement of military equipment. Its use has expanded by companies operating in various sectors, such as building and construction, machinery and equipment manufacturing, and other industries that require high costs, and the life cycle of their products is relatively long and has clear stages, as the complete product life cycle mainly covers the costs of research, experimentation, acquisition, maintenance, transportation, and storage, and that the essence LCC is not only the running cost, but also the cost related to the product.The research at Nasr General Company for Mechanical Industries aims to shed light on two main tools of contemporary cost management that work to calculate the cost of the product over the product life cycle and make improvements to it continuously according to the continuous improvement technique. Thus, they work appropriately to reduce product costs and the costs are calculated according to The accounting system prepared in the company under investigation..

The issue of plastic bags continues to be a significant topic globally in waste management. Their relatively low cost, ease of use, and accessibility have made plastic bags an integral part of human life. With increasing plastic bag usage, inevitably comes an increase in plastic waste. Moreover, the rapid usage cycle of plastic bags, as they are typically single-use items used only temporarily, exacerbates the problem. If plastic waste is not optimally managed, it will have negative environmental impacts. To address this, the retail company Alfamart has begun employing green marketing strategies to promote the "Plastic Bag Diet" by offering environmentally friendly shopping bag products (Eco Bags). This aims to raise awareness and concern among the public for environmental sustainability by reducing plastic bag usage during shopping. Apart from Alfamart, other competing retail companies have also adopted similar strategies and offer eco-friendly bag products. The intensifying competition among retail companies forces managers to reconsider their strategies to win market share. The issuance of the Bali Provincial Regulation on Limiting Single-Use Plastic Waste is based on Article 12 paragraph (3) and Article 13 paragraph (2) of Bali Provincial Regulation Number 5 Year 2011 concerning Waste Management. This reflects the negative impacts that can arise if waste is not properly managed. The enactment of local regulations prohibiting the use of single-use plastic indicates a legal policy direction towards environmental conservation. The research method used in this study is a juridical normative method with a literature review approach, focusing on legal norms including principles, norms, rules, regulations, agreements, and doctrines. Therefore, this study aims to analyze the effects of green marketing on attracting purchasing interest and persuading the public to make purchasing decisions on Eco Bag products at Alfamart as alternatives to plastic bags.

This study explores the application of green hydrogen technology for industrial decarbonization, focusing on its techno-economic and environmental feasibility. A quantitative approach was used, incorporating system modeling of a solar-based hydrogen production system combined with electrolyzers. The techno-economic assessment involved calculating the Levelized Cost of Hydrogen (LCOH), estimating capital and operational expenditures (CAPEX and OPEX), and evaluating the system's energy efficiency and hydrogen output. The environmental impact was analyzed using Life Cycle Assessment (LCA), comparing the carbon footprint of green hydrogen with fossil-based hydrogen. The results reveal that green hydrogen can reduce carbon emissions by up to 60% compared to fossil hydrogen, primarily due to the use of renewable energy for production. Additionally, the study found significant improvements in energy efficiency as electrolyzer performance and solar capacity increased. The LCOH is expected to decrease steadily as solar panel and electrolyzer prices continue to fall, enhancing the competitiveness of green hydrogen in the energy market. The findings also highlight the potential for heavy industries, such as cement and steel production, to transition from fossil fuels to green hydrogen, contributing to a cleaner industrial energy mix. This transition presents both environmental and economic benefits, with long-term savings from reduced fossil fuel dependency and lower production costs.

This research explores the potential of local bio-composites made from bamboo and coconut fiber as sustainable building materials in Indonesia. The construction sector in Indonesia faces significant environmental challenges, particularly the high carbon emissions associated with conventional materials like concrete and steel. The primary objective of this research is to evaluate the environmental and economic benefits of substituting these traditional materials with bio-composites, using Life Cycle Assessment (LCA) and energy optimization simulations. The LCA methodology evaluates the environmental impact of bio-composites across their entire life cycle, comparing them with conventional materials in terms of carbon emissions, energy consumption, and waste. Energy optimization simulations focus on assessing the thermal performance and overall building efficiency when using bio-composites in construction. The main findings suggest that bio-composites exhibit a significantly lower carbon footprint and better thermal insulation properties than concrete and steel, contributing to reduced energy consumption in buildings. Additionally, the use of locally sourced materials like bamboo and coconut fiber offers economic advantages, such as lower transportation costs and support for local economies. The research concludes that bio-composites can serve as viable alternatives to traditional materials, providing both environmental and economic benefits. For successful adoption, the research recommends policy support, technological advancements, and educational initiatives to promote the use of bio-composites in Indonesia’s construction industry.

With increasingly advanced technological developments, some of these problems can be minimized with the latest technology in the construction sector known as Building Information Modeling (BIM). With BIM, all parties involved in the project (stakeholders) can collaborate from the planning stage before the project is carried out, thereby reducing the potential for errors in development implementation (Mafrul, 2022). The use of BIM can provide the various functions necessary to model the entire life cycle of a building, while also providing a basis for dealing with changes and construction progress in positions and correlations between project teams. Proper implementation of BIM enables increasingly integrated design and construction processes, creating buildings with better quality, more efficient production costs, and shorter project completion times (Khairi et al., 2022b).

This study aims to determine the effect of organizational capital on the firm life cycle. The sample used is a manufacturing company listed on the Indonesia Stock Exchange for the 2009-2017 period, with a total of 580 observations of data from 116 companies and using a purposive sampling method. This study uses the independent variable organization capital which is proxied by OC/TA and the dependent variable company life cycle which is proxied by the dummy life cycle classification based on cash flow, retained earnings to total assets, and retained earnings to total equity. In addition, the control variables used are company size, market-to-book ratio, leverage, return on equity, company sales growth, capital expenditure, and asset turnover ratio. The analysis technique used is multinomial logistic regression. The results showed that organizational capital has a significant effect on the firm life cycle, where companies with high organizational capital are in the introduction and decline stages, while companies with low organizational capital are in the growth and maturity stages. Development requires quality human resources (HR). This human resource can act as a factor of labor production that can master technology so as to increase economic productivity. To achieve quality human resources requires the formation of human capital (human capital). The formation of this human capital is a way to obtain a number of people who have strong characters who can be used as important capital in development. This character can be in the form of level of expertise and level of community education. The concept of human capital investment that supports economic growth has existed since the days of Adam Smith (1776), Heinrich Von Thunen (1875) and other classical theorists before the 19th century who emphasized the importance of investment. human skills. Schultz (1961) and Deninson (1962) then showed that the development of the education sector with human resources as its core focus has contributed directly to a country's economic growth, through increasing the skills and productive capabilities of the workforce.  These findings and perspectives have stimulated the interest of a number of experts to research the economic value of education (Nurulpaik, 2005). Human capital is a stock of productive abilities and knowledge found in society. Alfred Marshal once said "the most valuable of all capital is that invested in human beings" (Becker, 1975). In this case human capital is a long-term investment in the development of human resources to increase productivity. The importance of human capital is that the knowledge that exists in human resources is the driving base in increasing productivity. Human capital can be distinguished from human resources management, but can also synergize. Human capital views humans more as intangible assets and human resources management views humans as costs or costs that are detrimental to the company. The concept of human capital emerged, due to a shift in the role of human resources. Human capital arises from the idea that humans are assets that have many advantages, namely human capabilities when used and disseminated will not decrease but increase both for the individual concerned and for the organization, humans are able to transform data into meaningful information. The concept of innovation has been continuously developed by a number of experts and institutions in the last 50 years. This is based on Resource Based Theory (Barney, 1991). In the perspective of Resource Based View (RBV), internal resources and the internal environment are the main keys for determining strategies to achieve high performance (Hitt et al., 2011). Resource Based Theory (RBT) focuses on the concept of attributes of excellence that are difficult to imitate as a source of superior performance and competitive advantage (Barney, 1991). Resources based theory is the company's resources as the main driver behind the company's performance and competitiveness. Based on this resources based theory, an organization can be assessed as a collection of physical resources, human resources, and organizational resources (Barney, 1991). Barney (1991) categorizes three types of resources: Physical capital resources (technology, plant and equipment) Human capital capital (training, experience, and insight), and Organizational resource capital (formal structure)

Machine maintenance must be carried out as a support for the reliability of a machine so that the production system can run smoothly to meet production needs. The fundamental problem of this study is in PT XYZ with the Roll Table 5Q machine, which frequently experiences sudden damage caused by critical components. The goal of the study was to determine the maintenance time interval of the 5Q Roll Table machine, the optimal age of the machine, and the number of mechanics based on the minimum total maintenance cost in an effort to improve the reliability of the machine using the Reliability Centered Maintenance (RCM) II methods and Life Cycle Cost (LCC) methods. From the results of research for critical components As Roll Table obtained interval value of 331 hours / 13 days once a year with the selection of action is Scheduled restoration task and for Bearing components obtained interval value of 109 hours/5 days once a year with the selection of action is Scheduled on-condition task. From the calculation of the total life cycle cost of Rp. 3,720,459,386 with the optimal number of mechanics on the Roll Table machine as many as 3 mechanics with an efficiency level of 9.63% with an optimal age for the Roll Table machine 5Q is 12 years.

PT. Petrosida is a manufacturing company engaged in pesticide production. The production system in this company is Make To Order (MTO) where the company will produce products after an order or order from consumers. In its production PT. Petrosida has problems with the main tools used for packaging, one of which is a 1-liter induction semi-automatic filling machine in the herbicide unit, where treatment is carried out after damage to a component. Critical components in filling machines experience an average of 20 times damage in 2022-2023 and the machine maintenance process is still not optimal with an average downtime of 5 hours / month. Therefore, the purpose of research is to be able to carry out preventive maintenance using the modularity design method in the hope that there will be no more breakdowns that hamper the production process so as to reduce machine maintenance costs and to find out the minimum total machine maintenance cost planning using the life cycle cost (LCC) method. By implementing preventive maintenance with modularity design, the total maintenance cost of Rp. 9,747,782 is lower than the company's total maintenance cost of Rp. 23,023,176 with an efficiency rate of 42.3%. And obtained the lowest total life cycle cost of Rp. 340,459,348, - with an optimal life on the machine of 3 years & the number of mechanics one person.

Mranggen Demak State High School Library is a work unit formed with the decision of an authorized official to serve the needs of school residents to the books in Mranggen Demak State High School. In this school library the library management is still conventional by taking notes in the big books. Services to library members are ineffective and unsatisfactory because it takes a long time to find the books they will borrow on every bookshelf available and look at notes in the big books. The slow preparation of the report so that the development of the library is less attention. Seeing these conditions the author tries to provide alternatives by making applications that can facilitate data processing and improve the efficiency of time and cost that has been in the school library. At this writing, the application made is a multiuser-based barcode technology application with a life cycle system development method. The system is designed using Microsoft Visul Basic 6.0 with a SQL Server 2000 database so that the implementation is in the form of a ready-to-use application system that is implemented in a library room. Application management of multiuser-based barcode technology is expected to be able to solve the problems that exist in the SMA Negeri 1 Mranggen Demak Library because in this system the data is processed centrally in one database so that data is not only recorded in the big books that have been happening.