Civil and Environmental Science最新文献

{"title":"DISTRIBUTION SERVICE PERFORMANCE OPTIMIZATION OF PDAM TIRTA TAMAN BONTANG CITY EAST KALIMANTAN PROVINCE","authors":"Vian Aviantara Wahyu Nugraha, M. Anwar, E. Suryo","doi":"10.21776/ub.civense.2023.00601.7","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.7","url":null,"abstract":"To achieve the level of service performance from PDAM Tirta Taman Kota Bontang , obtained based on user perceptions of PDAM Taman Tirta obtained from the results of a questionnaire with a Likert scale using the Importance Performance Analysis (IPA) method. From the results of the IPA analysis, interviews were then conducted using the Strength Weakness Opportunities Threats (SWOT) method . The results of the IPA analysis were used in quadrant I, namely service to the registration process (x11), survey of prospective customer locations (x12), time of survey implementation (x13) , Payment orders before installation (x15), Notice the length of the installation process (X15). Registration up to installation (X16), the supplied water meets health standards, attributes (X21 ), the quality of the supplied water (color, smell, taste) (X22) , report to PDAM Tirta Taman if there is a disturbance or it doesn't work smoothly (x 33 ), the duration of handling the damage house connection (x 43 ), customer or prospective customer database of PDAM Tirta Taman (x 71 ). Then the SWOT quadrant matrix with the SO ( Strengths-Opportunities ) strategy, namely development with IT and with social media Periodic pipe rejuvenation to avoid pipe leaks that can affect quality, Providing Customer Service via WhatsApp for service notifications, disruptions and payment orders, Issuing SOPs new and regular schedule for maintenance., Continue to perform security updates on the database storage system , Use of official forms for prospective customers with the interest of installing a new connection","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114492319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Evaluation of GPM IMERG v.06 Rainfall Product over the Lau Simeme Watershed in Indonesia","authors":"SettingsBachtiar Malthus Hutagaol, James E. Ball, E. Suhartanto, S. Wahyuni","doi":"10.21776/ub.civense.2023.00601.5","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.5","url":null,"abstract":"In Indonesia, rainfall is still significant spatially and temporally. In order to gain optimal results from utilising water resources, we have to ensure that the precipitation data is provided in good quality and quantity. Several spatial rainfall measurement sources have become available in recent years, such as GPM data (Global Precipitation Measure). In this study, the GPM IMERG V.06 product was evaluated using rain gauge measurements in the Lau Simeme watershed in North Sumatra Province, Indonesia. The relevance of the GPM IMERG was tested by direct comparison with observations at different time scales (daily, monthly, annual and seasonal) between 2005 and 2019. Results show that the satellite product provides poor rainfall estimations at the daily and annual time scales. However, the accuracy of GPM IMERG Final datasets is improved when temporally average to monthly timescale (R2 of 0.728, RMSE of 68.318 mm and NSE of 0.725), wet seasonal time scale (R2 of 0.673, RMSE of 79.287 mm and NSE of 0.658) and dry seasonal time scale (R2 of 0.947, RMSE of 20.356 mm and NSE of 0.924).","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125333640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EVALUATION OF ACCESSIBILITY COMMUTER-LINE STATION WITH JITNEY TRANSPORTATION MODES BY USING GIS APPLICATION-A CASE STUDY OF DEPOK STATION","authors":"Bayu Alif Hardiyansyah, Fauzul Rizal Sutikno, Michelle Zeibots, Kasun De Silva Wijayaratna","doi":"10.21776/ub.civense.2023.00601.6","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.6","url":null,"abstract":"This research aims to evaluate the aspects that can increase the Station's service area by maximising the integrated Jitney as the other public transportation modes that can increase reachability for the people near the Station. Evaluating the accessibility of some stations in the Depok area is needed to identify the infrastructure upgrading priorities, such as providing pedestrian roads and giving better access to the Station to increase the Station's service area. The methodology used in this research is analysing method using a GIS application to assess and discover the pattern of travel behaviour for public transport in the Depok municipality area. The GIS Database Design in this research uses the Spatial Database and Attribute Database, which are integrated with the QGIS application to become Maps for the service area of public transportation in the Depok Municipality. The road network in Depok municipality is dominated by the jitney route as intracity public transportation, which travels on the arterial and collector road. Then the railway is located in the central area of Depok that stretches from South to North. There are some areas that do not have access to jitney services due to this residential area being far from the arterial and collector road travelled by Jitney. Looking at its planning for jitneys in the Depok area, the availability of jitneys follows the demand of the passenger population, and there are no travel analyses from the Transportation Department of Depok Municipality or local public transport organisations (ORGANDA) as private jitney operators. The ineffective jitney route planning is the other reason that there are some uncovered residential areas from public transport access. Subsequently, there are different travel time characteristics among four commuter line stations in the Depok Municipality area. The Citayam and New Depok Stations have wider access for pedestrians which these two stations have a more extensive service area than Old Depok Station, whereas Old Depok Station has restricted access to the west area of this Station. The rearrangement of the Station access is needed, especially for Old Depok Station, by adding road access on the west side to increase the service area of the Station.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"os-24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127767435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of Changes in Land Use/Land Cover and Hydrological Response in the Upper Ciliwung Watershed","authors":"SettingsPanji Anom Nuariman, D. Harisuseno","doi":"10.21776/ub.civense.2023.00601.9","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.9","url":null,"abstract":"As a result of rapid urbanization, in 2021, it was recorded that the forest area in the Upper Ciliwung Watershed was only a quarter of the total area. Therefore, the Upper Ciliwung Watershed cannot optimally perform its hydrological functions. One of the reasons for conducting this research is to provide consideration in calculating the adequacy of the forest area in the Upper Ciliwung watershed. In addition, this research was also conducted to estimate the discharge and volume of water, the trend of land use change in the Upper Ciliwung watershed in the last few decades, what might happen in the future if land use change continues, and how much influence it will have in maintaining forest areas that exist in minimizing the risk of future disasters occurring due to the high rate of development. This study combines remote sensing technology and hydrological modelling to understand changes in hydrological characteristics when LULC transformed from 2001 to 2051. The spatial-temporal dynamics of LULC and its hydrological response were estimated using an integrated approach that combines remote sensing, Cellular Automata-Markov Chain based on Multi-Layer Perceptron with an HEC-HMS modelling system. Multitemporal satellite imagery is used to understand LULC changes and projections for 2031 and 2051 in the Upper Ciliwung watershed. The analysis shows that there has been a very significant increase in the developed area over the years. In contrast, other types of LULC have decreased. In 2001-2051, the forest area experienced the worst decline, 22,423,493 m2. Meanwhile, the developed area experienced a significant increase of 49,771,952 m2. This changing pattern has a negative impact on hydrological characteristics. Hydrological modelling shows that the volume and discharge are projected to increase drastically to reach 258.61 x 106 m3 and 26.3 m3/s, respectively, in 2051.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124273959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Landsat 8 imagery capability to estimate chlorophyll-a concentrations using spatially and temporally different data","authors":"Devy Risky Panji Wijaya, R. Haribowo, J. E.","doi":"10.21776/ub.civense.2023.00601.3","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.3","url":null,"abstract":"This Water quality has been one of the major issues in water resources. A water quality monitoring program should be performed regularly. However, this program requires numerous resources and efforts, especially using a direct measurement method. An alternative should be carried out to minimize the issues. Landsat 8 (L8) can be the alternative. Water clarity is one of the essential water parameters affecting sunlight’s ability to penetrate water and engage photosynthesis. Algae are vital in photosynthesis and are usually indicated as chlorophyll-a (chl-a). Several studies present that L8 is adequate to estimate chl-a concentrations as it provides high-accuracy results. This paper will generate a new model using data from different places and compare it with other chl-a models from previous studies by their capabilities to estimate chl-a concentrations. The results indicate that the generated model cannot provide consistent and precise estimations in different places and times. However, it has a “good” R2 value at 0.7245 from the regression analysis for model generation. The same results arise from other models that cannot reasonably estimate chl-a concentrations","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121860033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic analysis of reinforced concrete plate resting on elastic foundation using state space method and refined plate theory","authors":"Trong Hiep Nguyen","doi":"10.21776/ub.civense.2023.00601.10","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.10","url":null,"abstract":"This paper studies the dynamic response of rectangular reinforced concrete plates on an elastic foundation by state space method. The system of differential equations of vibration of the plate is developed by using Hamilton's principle. With a single-link rectangular plate, the displacements are represented through a double trigonometric series. Use the state space method to find the plate vibrational responses. The calculation examples are performed to calculate the displacement and stress of the plate with different structural parameters, thereby evaluating the influence of these parameters.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131143615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe ion extraction in patchouli oil with ion exchange using resin","authors":"A. Jaenuri, Thafie Ghilas Anarchie, K. Sumada","doi":"10.21776/ub.civense.2023.00601.2","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.2","url":null,"abstract":"Patchouli is the largest non-oil export commodity among essential oil exports in Indonesia. However, the quality of patchouli oil in Indonesia is considered to be very low. Traditional patchouli oil distillation is carried out in a small capacity and uses a simple distillation method based on a large difference in boiling points or one of the volatile components. This process produces poor quality patchouli oil such as acid number more than 8, dark oil, patchouli alcohol less than 30%, and high water content. This is evidenced by the large amount of Fe metal contained in patchouli oil. Patchouli oil produced contains a lot of iron in its yield, so it needs further processing to reduce the Fe content in patchouli oil. The use of resin as an adsorbent for Fe metal is one way to reduce the Fe metal content. Resin weighing 50, 150 and 250 grams was added to 200 ml of patchouli oil. Then the stirring process was carried out with a stirring speed of 200 rpm with time variations of 30, 60 and 90 minutes. The results obtained showed the best adsorption process with Fe content in patchouli oil of 1.42 mg/Kg, contact time of 90 minutes and amount of resin of 250 grams with the largest percentage of removal of 87.5%.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134297114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erosion and sedimentation analysis as basic reference for land conservation planning on lesti Sub-watershed","authors":"Hari Sumanto, V. Dermawan, R. Asmaranto","doi":"10.21776/ub.civense.2023.00601.1","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.1","url":null,"abstract":"The Lesti sub-watershed area is mostly steep mountain slopes, when the rain fall it carries erosion and sediment material. This study aims to discover the trend of land-use changes; measure the amount of erosion rate and Erosion Hazard Levels; obtain the sediment-transport actual quantity based on SWAT application; discover the scatter of land critical-level; and determine the strategy for implementing conservation and controlling the erosion rates. Erosion Hazard Level were obtained as follows: Class I 11.92%; Class II 27.45%; Class III 43.85%; Class IV 13.06%; Class V 3.99%. Four (4) parameters overlaid to determine the land criticality level are: land coverage, land slope, erosion risk level, and management aspect. Generally, Lesti Sub-Watershed is categorized as: very critical 0.14%; critical 4.61%; a rather critical 28.06%; critical potential 53.66%; and normal 13.51%. From SWAT analysis the average value respectively soil erosion is 119.60 tons/ha/year; sediment yields 310.77 tons/ha/year; rainfall 2143.27 mm/year; and surface runoff 1120.65 mm/year. The suggestions of the watershed area conservancy requires a vegetative (planting) and mechanical (building) method. The vegetative method such as: alleys cropping; reforestation; agroforestry; relay cropping; soil cover cropping as natural green manure; living fence; mixed cropping farm; mulch; environment greening; strip cropping with 20.65% effectivity; and filter strip with 26.03% effectivity. The mechanical method such as: contour tillage with 29.71% effectivity; terracing with 23.41% effectivity; check dam with 17.50% effectivity; and mound.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129009318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the Quality of Toll Road Services to Increase Satisfaction Level of Pekanbaru – Dumai Toll Road","authors":"Syah Gemma Putra, A. D. Wicaksono, G. Prayitno, Nguyen Throng Hiep","doi":"10.21776/ub.civense.2023.00601.4","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.4","url":null,"abstract":"Pekanbaru - Dumai toll road is one of the segments of the Trans Sumatra toll roads built by PT Hutama Karya. The Pekanbaru - Dumai toll road connects economic centers in Riau Province, including Dumai-Duri-Kandis-Petapahan-Minas-Pekanbaru. On the Pekanbaru-Dumai toll road, problems with service quality were found. This research has two objectives: to analyze the quality of service and level of satisfaction of the toll road users assessed from the toll road users. The second objective is to formulate referral recommendations to fix and improve the quality of toll road services in terms of the needs and expectations of toll road users. This study employs IPA analysis to identify the degree of performance and the level of importance of service qualities, CSI analysis to determine the level of satisfaction of toll road users, and QFD analysis to define the development priorities for the Pekanbaru-Dumai toll road. The results of this study obtained that the satisfaction level of the Pekanbaru-Dumai toll road was 0.63, with the category quite satisfied. The priority is toll road surface maintenance regularly, the second priority is toll road lighting facility maintenance regularly, the third priority is toll road safety facility maintenance regularly, the fourth priority is to improve rest area facilities, the fifth priority is to expand parking in the rest area, and the absolute priority is to enforce electronic fines or (e-ticket) for traffic violations.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117308858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lanting House Preservation Based on River Culture In Sasirangan Village, Banjarmasin","authors":"Aula Sekar Arum Pertiwi, Agung Murti Nugroho","doi":"10.21776/ub.civense.2023.00601.8","DOIUrl":"https://doi.org/10.21776/ub.civense.2023.00601.8","url":null,"abstract":"The shift in time has brought about changes that clearly leave the cultural identity of the archipelago. Sasirangan Village is one of the villages located in the middle of Banjarmasin City. This village still has a strong atmosphere, especially in the diversity of architecture in the area. River culture is still visible in this village, both for daily needs and also land for housing, namely Rumah Lanting. There are 3 Lanting houses in Sasirangan Village. The lack of a number of Lanting Houses left at this time raises a concern that there is a threat of extinction from cultural heritage. In this case, it is necessary to have a study of the architectural concept of the Lanting House to determine the right steps in preserving the Lanting House. The results of this study found that the right effort to preserve the Lanting House in Sasirangan Village was a revitalization effort that did not require material replacement and developed it as a Sasirangan gallery or souvenir shop that supports local wisdom and the identity of Sasirangan Village.","PeriodicalId":432135,"journal":{"name":"Civil and Environmental Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116006253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}