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All Journal Journal of Moeslim Research Technik Cognitionis Civitatis et Politicae
Bagus Jatmiko
Politeknik Angkatan Laut
Aerospace Engineering Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Engineering Social Sciences

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COST OPTIMIZATION OF JETTY RETROFIT USING VALUE ENGINEERING AND LIFE CYCLE COST ANALYSIS Ato Muhan Iswidyantara; Bagus Jatmiko; Rina Marlina; Ahmad Faisol; Sultan Al Fahad
Journal of Moeslim Research Technik Vol. 3 No. 2 (2026)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/technik.v3i2.3750

Abstract

The increasing demand for sustainable infrastructure has led to a focus on cost optimization in retrofit projects, particularly in maritime infrastructure such as jetties. Sustainable development aims to balance economic growth, environmental protection, and social welfare, highlighting the need for efficient resource utilization. Jetty retrofit projects, crucial for port operations, often face high construction and maintenance costs. This study aims to evaluate the effectiveness of Value Engineering (VE) and Life Cycle Cost Analysis (LCCA) in optimizing the costs of jetty retrofit projects while ensuring long-term sustainability. A mixed-method research design was employed, combining quantitative data from questionnaires and statistical analysis with qualitative insights from field observations and interviews. The study found that integrating VE significantly reduced operational costs, particularly through the substitution of conventional energy systems with renewable energy sources such as solar panels. The application of LCCA demonstrated that long-term savings from energy efficiency could offset higher initial investments. The findings show that the use of VE and LCCA together can achieve cost savings of up to 5.21% and enhance financial viability, with a Benefit-Cost Ratio (BCR) of 2.20, Net Present Value (NPV) of IDR 40.40 billion, and an Internal Rate of Return (IRR) of 46.93%. These results underline the financial and environmental feasibility of green retrofit projects. This research contributes to sustainable infrastructure practices by highlighting cost-effective strategies for jetty retrofitting.
STRATEGIC COMMUNICATION IN THE ERA OF COGNITIVE WARFARE: CRISIS GOVERNANCE, PUBLIC TRUST, AND THREAT PERCEPTION MANAGEMENT Eldhira Respati; Bagus Jatmiko; Mahendra Mahendra
Cognitionis Civitatis et Politicae Vol. 3 No. 4 (2026)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/politicae.v3i4.4349

Abstract

Cognitive warfare has transformed crisis communication by making public perception, institutional credibility, and decision-making capacity central targets within contested information environments. This study aimed to examine how strategic communication supports crisis governance, strengthens public trust, and calibrates threat perception under conditions of information manipulation and cognitive pressure. An explanatory sequential mixed-methods design was employed, combining a survey of 420 adults, interviews with 24 professionals, and analysis of 96 official crisis communication materials. The findings showed that strategic communication quality, particularly transparency, consistency, evidence attribution, responsiveness, and acknowledgment of uncertainty, was positively associated with institutional trust and negatively associated with information uncertainty. Exposure to contested information was related to stronger threat perception, while cognitive resilience weakened the influence of repeated or emotionally charged narratives on threat judgments. Qualitative findings further indicated that trust was strengthened when institutions explained evidentiary changes, coordinated messages across agencies, and corrected information transparently. The study concludes that strategic communication should function as an integrated component of crisis governance rather than as post-decision messaging. Effective threat perception management requires perception calibration, not perception control, by combining credible information, transparent uncertainty management, institutional coordination, and citizen cognitive resilience within democratic communication systems during complex and rapidly evolving crises.
Co-Authors Ahmad Faisol Ato Muhan Iswidyantara Eldhira Respati Mahendra Mahendra Rina Marlina Sultan Al Fahad