Pelabuhan Ratu Research Articles

Handling Repeated Crimes (Residivist) of Motor Vehicle Theft (Case Study at Sukabumi District Police)

The development of the times affects life in society which is marked by increasing crime in society. There are criminals who repeat crimes after the perpetrator is released from his criminal sentence or are known to be recidivists. The research method used is qualitative research, using an empirical legal approach which examines law which is conceptualized as real behavior, as an unwritten social phenomenon, which is experienced by everyone in social life.Research Methods In this research, the author used several research methods to complete this thesis. The first method used is the normative juridical method. Normative juridical is a legal research method carried out by examining library materials or mere secondary materials. The results of research into factors causing recidivism of motorbike theft in the jurisdiction of the Pelabuhan Ratu Police, Sukabumi Regency, namely educational factors, opportunity factors, lack of skills factors, and law enforcement factors. The recidivist modus operandi of motorbike theft in the jurisdiction of the Pelabuhan Ratu Police, Sukabumi Regency is in the form of using a T-lock, pushing the motorbike and hiding it in another place. Efforts to deal with recidivist motorbike theft in the jurisdiction of the Pelabuhan Ratu Police, Sukabumi Regency in the form of repressive and preventive efforts.

Analysis Of Working Capital Credit Provision System And Handling Of Bad Credit (Case Study At PT. BPR Supra Artapersada Pelabuhan Ratu Branch)

This study aims to analyze the working capital credit provision system and the handling of bad credit at PT. BPR Supra Artapersada Pelabuhan Ratu Branch. The data used includes qualitative data in the form of credit applications, credit guidelines, credit analysis, credit agreements, warning letters, and the organizational structure of PT. BPR Supra Artapersada Pelabuhan Ratu along with its job descriptions. Data collection techniques involve observation, interviews, and documentation, which are then analyzed using qualitative descriptive analysis. The results of this study indicate that the working capital credit provision system implemented at PT. BPR Supra Artapersada is generally good, with a structured procedure from credit application, credit analysis, approval, to disbursement. However, some aspects still require improvement to prevent bad credit. The handling of bad credit at PT. BPR Supra Artapersada is also quite comprehensive, including initial notifications, direct communication, field visits, issuing warning letters, and applying the 3R methods (Restructuring, Rescheduling, Reconditioning). However, there is a need to improve the mechanism for seizing collateral and to adjust the legal procedures applied.

Overview of Midwives’ Knowledge of Postpartum Bleeding to Reduce Maternal Mortality Rate In Working Area at Pelabuhan Ratu Hospital

Overview of Midwives’ Knowledge of Postpartum Bleeding to Reduce Maternal Mortality Rate In Working Area at Pelabuhan Ratu Hospital

Analysis of the Suitability of Clove Plants in Pelabuhan Ratu Sub-District

Indonesia is the largest clove-producing country in the world, this is because cloves are native plants from Indonesia which are also supported by natural conditions, climate, and topography. In Sukabumi Regency, cloves are the main production center in West Java. This study uses the scoring method by overlaying the data used. The data used in this study are rainfall data, soil type data, slope data, and altitude data. The results of this study found that the area for the "very suitable" class is quite dominant when compared to the "suitable" and "less suitable" class. the "less suitable" class has an area of 12.79 Km2 with a percentage of 13.81%, then for the "suitable" class it has an area of 29.95 Km2 with a percentage of 32.33%, and the "very suitable" class has an area of 49.91 Km2 with a percentage of 53.86%.

Mimicry-Memorization Method: Elevating Arabic Speaking Skills with Visual Media

This research aims to explore the effectiveness of implementing the Mim-Mem (Mimicry-Memorization) Method with the support of visual media in enhancing Arabic speaking proficiency in a school environment. The Mim-Mem Method combines mimicry for better understanding and memorization for vocabulary reinforcement, while visual media is utilized as a clear representation of the learning material. The research methodology employed is classroom action research with students from grade XI A at SMP IT Sahabat Alam Pelabuhan Ratu Sukabumi as the subjects. Data were collected through observations, tests, and field notes over two research cycles. The results were analyzed to measure the improvement in students' speaking abilities. The research findings demonstrate a significant enhancement in students' speaking skills after applying the Mim-Mem Method with visual media. The average scores increased from 64 in the pre-test to 81 in the post-test, indicating the effectiveness of this method as a learning approach. The discussion involves in-depth analysis regarding the positive impact of the Mim-Mem Method with visual media on Arabic speaking skills among students. The novelty of this research lies in the innovative combination of methods with a visual approach, providing an effective solution to learning challenges. In conclusion, the implementation of the Mim-Mem Method with visual media makes a positive contribution to improving Arabic speaking skills among students at SMP IT Sahabat Alam Pelabuhan Ratu Sukabumi. Recommendations for future research could focus on further developing this method, including variations in teaching approaches and more specific adjustments to students' characteristics. Additionally, further studies could explore the effectiveness of this method in higher education contexts or different educational environments.

Genetic differentiation of Hippa adactyla based on CO1 gene sequence in Sundaland

The Hippidae is a family of sand crabs that inhabit intertidal ecosystems, specifically in sandy areas scattered throughout the coast. Differences in habitat conditions cause variations in Hippidae members. Hippa adactyla is a member of the genus Hippa. This study aimed to map the genetic differentiation between Hippa adactyla populations in the Greater Sunda Islands. The sand crab (Hippa adactyla) samples were taken from Sumatra (Pariaman, Bengkulu, Lampung) and Java (Pangandaran, Pelabuhan Ratu, Banyuwangi) by handcatching then stored in alcohol 96%. Total genomic DNA was extracted from the muscle tissue of the samples using a commercial DNA Extraction KIT. The upper part of the COI gene (5' end) (±750 bp) was amplified using specific primers. Based on the K2P substitution model, the genetic distance of the Pangandaran population to the Bali Strait population is the same as that of the Sumatran population (0.062). Genetic diversity ranges from 0.000 to 0.123. Haplotype diversity was 0.928, consisting of 18 haplotypes.

Optimization of Mechanical Thermal Energy Audit At Pelabuhan Ratu Unit 2 With Pi Vision

The percentage of coal PLTUs in Indonesia reached 45% of the capacity of 64,000 MW in 2018, and in the Java, Madura Bali (JAMALI) system it reached 74.84% of the total generating capacity of 46,958 MW in 2023. It is projected that coal PLTUs will continue to dominate the generation sector with a contribution of 50% of total generating capacity in 2050. The energy crisis is a strategic issue in current national development both in terms of price and availability. This is of course a result of the condition of world oil supplies which has an impact on domestic fuel conditions, considering that the majority of domestic fuel needs must be imported from other countries. This research aims to analyze the deviation of NPHR in the conditions of actual performance test results with commissioning, analyze the factors that cause an increase in NPHR, analyze the contributing contribution of each factor that causes an increase in NPHR by designing correction and reference factors related to the influence of changes in the main operating parameters of PLTU equipment on NPHR and look for energy saving opportunities and prepare recommendations for improving plant efficiency performance. This research was conducted at the coal-fired PLTU Pelabuhan Ratu Unit 2 which has an installed power capacity of 350 MW gross and is located in Sukabumi, West Java. In this research, an analysis of the boiler, turbine-generator, condensate, and feedwater systems was carried out. Actual data was obtained through a performance test procedure carried out under maximum load conditions of net capacity (DMN) for 2 hours in November 2022. Based on the research that has been carried out it can be concluded that there was an increase in NPHR during the actual performance test compared to the baseline of 72.38 kcal/kwh, from 2,621.82 kcal/kwh to 2,694.20 kcal/kwh. The increase in NPHR has the potential to result in potential energy losses equivalent to IDR 15,365,850,000 per year. 3. Overall there are 7 goals for improving energy performance with improvements without investment, 4 improvements with low costs, and 4 improvements without costs. The total potential reduction in NPHR, if all recommendations are implemented, is 86.78 kcal/kWh or equivalent to a reduction in potential losses of IDR 44,792,896,565 per year with a total required repair cost of IDR 9,305,960,000.

Leveraging A Multi-Criteria Decision-Making Approach with AHP & TOPSIS Method for the Selection of IoT-Based Inverter Smart Grid System and Smart Meter in Solar Photovoltaic and Wind Turbine Installations at Pelabuhan Ratu CFPP.

The effective selection of inverters plays a critical role in optimising the efficiency and performance of solar photovoltaic (PV) and wind turbine systems. Inverters have a direct impact on overall energy conversion efficiency and system output by influencing their efficiency and reliability. Inverter selection also involves essential criteria such as cost, compatibility with renewable energy sources, and environmental considerations. Therefore, a comprehensive and systematic approach is necessary to thoroughly assess and compare various inverter options.
 This study utilises a multi-criteria decision-making methodology to address these challenges. It assesses the identified criteria using the Analytical Hierarchy Process (AHP) and ranks them to determine the most suitable solution through the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS). As a result, the investigation identifies smart grid and smart metre inverters as the optimal solutions, effectively addressing concerns related to power stability, communication and connectivity, security, data management, and cost.
 The proposed methodology yields a substantial total equity portion of USD 9,325.71, along with impressive annual earnings before interest, taxes, depreciation, and amortisation (EBITDA) of USD 1,734.09. The estimated payback period is 6.85 years, and the return on investment (ROI) reaches a remarkable 338.07%. Additionally, the nett income significantly reduces the production cost, amounting to USD 40,853.34 in a single period.

Tidal Characteristics in Southern Waters of Java - Indonesia

Detailed information regarding tidal characteristics in Indonesian waters is not yet available evenly, including in the southern waters of Java. Tides are one of the most essential hydro-oceanographic parameters in water dynamics. Therefore, this study aims to analyze the characteristics of the tides in the southern waters of Java, starting from Banten Regency in West Java to Malang Regency in East Java. Tidal data with measurement intervals every one hour were collected from December 23, 2022, to January 20, 2023, from ten tide stations with details: 1 station each in Banten and Central Java, three stations each in West Java and East Java, as well as two stations in Yogyakarta. Data from each station is then processed using the Admiralty method to obtain tidal harmonic constant and Formzahl values. Based on the tidal harmonic constants' amplitude and the Formzahl values (F), the tidal type in the southern waters of Java is a mixed tide prevailing semi-diurnal (F ranged from 0.64 - 1.34). The tidal range in the southern waters of Java ranges from 178 - 332 cm. In more detail, Banten and Pelabuhan Ratu waters are classified as micro tides (the tidal range is 178 and 182 cm, respectively). At the same time, the rest are categorized as meso tides (tide range between 200 - 400 cm).Keywords: Tidal Type, Admiralty, Formzahl, Tidal Range, Indian Ocean

Solar energy utilization in desalination power plan

A steam power plant (PLTU) uses demin water to generate 3x350 MW of electrical energy. Reverse Osmosis Desalination system is used to treat the 190 m3/hour of desalinated water that is produced from seawater. Solar energy will replace the 225.41 kW of electrical energy required for the RO desalination pump in order to lessen pollution and the greenhouse effect caused by PLTU. The PLTU is situated in Pelabuhan Ratu Sukabumi, West Java. This region has a solar radiation potential of 3.189 kWp/day/m2 and a deployment space for PV modules of 6,167 m2, divided into two zones: the ground and the roof. The needs analysis is carried out by utilizing software simulations that estimate the power requirements of desalination pumps and the potential of electrical energy from solar radiation based on land availability. According to the modeling findings, PLTS can produce 1024 MWh/year of electrical energy with 1,458 pieces of 450 Wp PV modules and 5 units of 120 kW inverters.

Earthquake Hazard Analysis in Ciletuh Pelabuhan Ratu Geopark Area, West Java

Indonesia is situated between Asia and Australia, as well as the Indian and Pacific Oceans. This circumstance places Indonesia in a geologically complicated pattern, which increases the intensity of earthquakes, tsunamis, volcanoes, and landslides. UNESCO has classified Pelabuhanratu Ciletuh Geopark as a world heritage area. This has resulted in an explosion in tourist and development activity. Even though this tourism destination has the potential for high seismicity, there has been no analysis of the seismic hazard in this region. This study aims to map the earthquake hazard in the Ciletuh Pelabuhan Ratu Geopark Area. This will be important for determining vital assets' placement and development planning. This study employs remote sensing studies and geographic information systems to examine and classify earthquake-prone locations. We evaluated data from DEM, RBI, and soil-type maps. This method evaluates each earthquake hazard metric using the Analytical Hierarchy Process (AHP). The large research area has a slope between 0-300. Few locations have steep slopes. In the Districts of Cisolok, Cikakak, and portions of Pelabuhan Ratu, the characteristics of the huge hard rock are derived from the Quaternary volcanic deposits of Mount Endut. As a result, this region possesses a solid rock structure that can absorb an earthquake propagation wave. This dynamic process of geomorphological creation can also demonstrate that the region surrounding the lineage will feel the effects of a future earthquake. The results show that Ciemas, Simpenan, parts of Cisolok, and Pelabuhanratu districts are included in the moderate to high category of earthquake threats.

Building Vulnerability Analysis Due to Tsunami by Using Probabilistic Tsunami Hazard Assessment (PTHA): A Case Study of Pelabuhan Ratu, Sukabumi

Cities that vulnerable to tsunamis, including the village of Pelabuhan Ratu on the southern coast of West Java, Indonesia, are in dire need of adequate vertical evacuation structures. However, constraints regarding to limited funding and difficulties in finding affordable land have hindered the implementation efforts of such structures in several cities. This research aims to analyze building vulnerability to tsunami disasters and identify buildings that can serve as alternative tsunami evacuation options based on Probabilistic Tsunami Hazard Analysis (PTHA) in Pelabuhan Ratu. The research methodology involves mapping the Modified Building Tsunami Vulnerability (BTV) and connecting the numerical simulation results with fragility curves assumed for the Pelabuhan Ratu area. The numerical simulations were conducted using the Cornell Multi-Grid Coupled Tsunami Model (COMCOT). Various tsunami scenarios triggered by earthquakes with different magnitudes ranging from 8.5 to 9.0, with intervals of 0.1, were considered in the numerical simulations. The research findings indicates high probability of maximum tsunami height reaching 14.85 meters in a return period of 10,000 years, and 51.77 meters in return period of 30,000 years. Based on these results, it was found that a three-story minimarket built with concrete could be used as an evacuation facility in a 10,000-year return period.

Time Series Forecasting of Significant Wave Height using GRU, CNN-GRU, and LSTM

Predicting wave height is essential to reduce significant risks for shipping or activities carried out at sea. Waves inherit a stochastic nature, mainly generated by wind and propagated through the ocean, making them challenging to forecast. In this paper, we design time series wave forecasting using a deep learning model, which is a hybrid Convolutional Neural Network (CNN)-Gated Recurrent Unit (GRU) or CNN-GRU. We use two time series of wave data sets, i.e., reanalysis data from ERA5 by ECMWF and GFS from NOAA. As a study area, we choose Pelabuhan Ratu, located in the south of West Java which is connected to the open Indian Ocean. Moreover, we also compare the results by using other deep learning models, i.e., the Long Short-Term Memory (LSTM) and GRU. We evaluated these models to forecast 7, 14, and 30 days. Models' performance is assessed using RMSE, MAPE, and Correlation Coefficient (CC). For predicting 30 days, using the ERA5 data, the CNN-GRU model produces relatively accurate results with an RMSE value of 1.8844 and CC of 0.9938, whereas for the GFS data, results in RMSE value of 1.8852 and CC of 0.9915.

The Validity of Cross Priming Amplification to Detect SARS-CoV-2 Virus

The standard molecular technique to detect the SARS-CoV-2 virus is The Real-Time Reverse-Transcription Polymerase Chain Reaction (rRT-PCR). It requires sophisticated equipment and a time-consuming sample process. The Cross Priming Amplification (CPA) is a nucleic acid amplification technique that amplifies DNA with high specificity and efficiency under constant thermal conditions. This technique is faster than rRT-PCR and doesn't require a biosafety level-2 (BSL-2) facility. The study aimed to determine the validity of CPA with rRT-PCR as a gold standard and to evaluate its performance as molecular rapid tests for detecting SARS-CoV-2 RNA from nasopharyngeal swab specimens. This study was a descriptive diagnostic test by using data retrospectively from swab nasopharyngeal patient samples who were treated at Palabuhan Ratu Hospital with COVID-19 from 01 January to 31 December 2021. The CPA was performed on a total of 52 nasopharyngeal samples at Pelabuhan Ratu Laboratory and rRT-PCR at Provincial Health Laboratory. The validity and correlation tests were performed. The majority of subjects were female between the ages of 34-50 years. The cut-off Tt-value is 3.25, 0.84 Area Under Curve (AUC), with a p-value <0.001. The CPA has good validity for COVID-19 diagnosis with 77% sensitivity, 94% specificity, 96% PPV, and 71% NPV. The sensitivity was increasing with Ct-value <30 (82%) and Ct-value <25 (87%). The CPA had a good validity for the COVID-19 diagnostic test. The CPA could be used as a rapid molecular test for detecting SARS-CoV-2 viral RNA from nasopharyngeal swab specimens.

DIPLOMASI BUDAYA INDONESIA DAN BELANDA MELALUI “UPACARA LABUH SAJI” DI PELABUHAN RATU SUKABUMI

Indonesian and Dutch cultural diplomacy through the "laying ceremony" at the port of Ratu Sukabumi. One of the characteristics of coastal communities is a strong dependence on the coastal environment. The good and bad of the environment will have a direct impact on their lives. The coastal communities discussed here are the people of Pelabuhan Ratu. The Pelabuhan Ratu community also has culture, namely traditional ceremonies that are still developing today in Palabuhanratu, which is often referred to as the Labuh Saji effort, Labuh Saji or called Fisherman's Day, this is a form of tradition, this tradition is carried out from generation to generation because it is believed to be an expression the gratitude of the Palabuhanratu community for the prosperity and abundant marine products and aims to honor Nyi Putri Mayangsagara or what we often hear as Nyai Ratu Kidul, of course these customs and traditions are quite interesting for the surrounding community. the coastal community of Pelabuhan Ratu in Sukabumi. The research method used is the literature review method which contains a description of the literature review that underlies the idea to solve the problem and support the theory search process. The results of the study indicate that it is true that there is a traditional culture in the Pelabuhan Ratu Sukabumi area, namely the Labuh Saji Ceremony. This tradition is carried out once a year to be exact on April 6 (Fishermen's Day).Keywords: Culture Diplomacy, Coastal Community, Pelabuhan Ratu, Labuh Saji

Polycyclic Aromatic Hydrocarbon (PAHs) compound in sea-water of Cimandiri river estuary, Pelabuhan Ratu

Polycyclic Aromatic Hydrocarbon (PAHs) is a polycyclic aromatic organic compound that is toxic to humans and aquatic organisms. This research aims to determine the level of pollution of PAHs compounds in seawater at the estuary of Cimandiri River, Pelabuhan Ratu. This research was conducted in April 2017 by survey method. Seawater samples were taken using a water sampler at 15 research stations. The levels and types of PAHs compounds were determined using Gas Chromatography-Mass Spectrometer (GC-MS), and PAHs sources with individual ratios diagnose. The results showed that seawater in the Cimandiri River Estuary still relatively low from contamination of PAH compounds. The type of PAH in seawater at the estuary of the Cimandiri River is dominated by low molecular weight naphthalene compound. PAH contained in seawater at the estuary of the Cimandiri River possibly comes from various sources, likely oil spills, burning petroleum, and combustion of organic compounds. PAH content in seawater of Cimandiri River estuary relatively small and still within the criteria for marine organism life state by The State Ministry Office for Life Environment.

ANALISA SISTEM JARINGAN IRIGASI TERSIER DESA CITARIK KECAMATAN PELABUHAN RATU KABUPATEN SUKABUMI

A very important factor in increasing agricultural production is irrigation. With an irrigation system, we can irrigate plants in the right amount and time, so that plants can grow well and can produce optimally. In planning an irrigation system, the first thing that needs to be done is a hydrological analysis including the water demand in the fields (GFR), the demand for water intake (DR), the clean water requirement in the fields (NFR) as well as the water availability factor, where the amount of water demand will determine the amount of water needed. irrigation building planning. In this study, rainfall analysis was carried out, Rainfall Data Consistency Test, Mainstay Rainfall and Effective Rainfall, Calculation of Planting Water Needs, Rotational Water Distribution System and Rotational Hours. water distribution system in the irrigation area of Citarik Village, Pelabuhan Ratu District, Sukabumi Regency. The results of the research show that the water needs for plants have been met with the results of the calculation of the planned discharge with a planned q of 1.776 lt/sec/ha with an area of 150 ha and irrigation efficiency 60% = 1.776/0.60 = 2.961 lt/sec/ha x 150 ha = 444.22 lt/sec. The distribution of water on a rotational basis is carried out by classifying the rice fields into three groups and three hours of rotationKeywords: rainfall, discharge, irrigation channel

Kearifan Lokal Pantai Laut Selatan (Mitos Nyi Roro Kidul) sebagai Desa Wisata dan Asset Kabupaten Sukabumi

Hearing the southern seacoast people will immediately think queenly figure, namely the southern coast guard Nyi Roro Kidul although the story will facta is still in question. Local knowledge is maintained continuity able to sustain life would be a tourist attraction and can increase the assets of government and society around. Local knowledge is a form of human effort in order to maintain, manage and preserve the indigenous culture and using his intellect (cognition) to act and behave towards something, objects or events that occur in a given space and dimension criteria to qualify as local wisdom. The qualitative research method is the right choice for this research because it aims to understand a phenomenon in the social context naturally. By having the natural attractions that are unique and distinctive and myths Nyi Roro Kidul attached Pelabuhan Ratu eligible criteria of the tourist village and has the potential to bring assets and contribute to generating economical resources which are expected to provide benefits for the future and survival of the government and surrounding communities.

A study on the potential of electricity generation from wave energy in Pelabuhan Ratu, Sukabumi

Pelabuhan Ratu is an area that has high wave energy potential and can be used as renewable energy. Wave energy harness the power of ocean waves into an electrical energy. The purpose of this research is to estimate the potential of wave energy in the month of Muharram and Rajab (Islamic/Hijriyah calendar) in the year 2018. It is based on local communities beliefs that the Muharram month has a high wave characteristic, and in this study compared with Rajab, the other month in Hijriyah calendar. The value of the forecasting waves in Muharram has a higher value compared to the Rajab. The estimated value of the power generated in the Muharram of 634.205 KWatt, whereas in the Rajab of 119.563 KWatt. The value is influenced to the fetch length. This wave energy potential then can be used to estimate the electrical power generated and the effect of the turbine on the application of the Oscillating Water Column (OWC) system.

A Field Study of Atmospheric Corrosion of Carbon Steel after Short Exposure in Pelabuhan Ratu, West Java Province, Indonesia

The investigation of atmospheric corrosion of mild carbon steel as representative of offshore infrastructure has been carried out in the marine tropical of Pelabuhan Ratu, West Java, Indonesia. They are exposed up to 76 days of periods, and their corrosion rates are determined according to ASTM G1-03. The surface morphology, the elemental compositions and compounds were observed using a scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), respectively. The environmental parameters of the test site are monitored during exposure, such as air temperature, relative humidity (RH), airborne salinity and dew temperature. Based on the results, the corrosion rates of steels were 2.79 and 2.8 mpy within the 27 and 76 days exposures, respectively. The presence of chloride deposition on the surface of steel can increase the severity of corrosion. Moreover, the detrimental effect of chloride was observed in rust product, which was covered by an oxygen element. The main phases of rust products present were magnetite (Fe3O4) and hematite (α-Fe2O3.H2O). Several cracks were observed in the rust layer, which tended to exfoliate and lose adherence and protectiveness from further corrosion attack. HIGHLIGHTS The presence of chloride deposition on the surface of steel can increase the severity of corrosion. The severity of corrosion attack mainly depends on the exposure time and some climatic parameters, such as relative humidity (RH), air temperature and chloride airborne. The uniform distribution of the chloride tends to increase the production of ferrous chloride in high RH condition and the aqueous layer deposited on carbon steel. There are two phases on corroded carbon steel such as hematite (α-Fe2O3.H2O) and Magnetite (Fe3O4) after exposure GRAPHICAL ABSTRACT