scholarly journals Utilization of Randayan Island Coastal and Small Islands Protected Area for Development of Sustainable Diving Tourism

2021 ◽  
Vol 249 ◽  
pp. 03006
Author(s):  
Enjang Hernandi Hidayat ◽  
Parikesit ◽  
Yudi Nurul Ihsan
Keyword(s):  
Carrying Capacity ◽  
Quantitative Methods ◽  
Secondary Data ◽  
Small Island ◽  
Small Islands ◽  
Suitability Analysis ◽  
Surrounding Water ◽  
West Kalimantan ◽  
Coral Fish ◽  
High Level

Randayan Island and The Surrounding Water Small Island Park (TPK Pulau Randayan dan Perairan Sekitarnya) is one of the Coastal and Small Islands Protected Areas (MPA) in West Kalimantan which has the potential to be developed into a marine tourism destination, especially sustainable diving tourism. The area has resources with a high level of diversity such as coral reefs, coral fish, seagrass, and other potential aquatic biota. This study aims to identify potentials, conduct resource suitability analysis, calculate the carrying capacity of the area, the carrying capacity of utilization, and make a map of area utilization suitability for the development of sustainable diving tourism. This research uses quantitative methods with tourism suitability analysis based on Yulius, et al (2018) and carrying capacity analysis based on Yulianda (2019). The data source is secondary data obtained from previous research and from publications published by several related agencies. The results showed that the Tourism Suitability Index for diving tourism in the limited use zone of Randayan Island Small Island Park consisted of Station 1 (Pulau Kabung), Station 2 (Pulau Lemukutan), Station 3 (Pulau Penata Besar), and Station 4 (Pulau Randayan) are included in the Conditional Suitable category, with scores of 65%, 56%, 72%, 65%, respectively. The Area Carrying Capacity at each station are 596, 1,354, 1,028, 157 people per day, with the Utilization Carrying Capacity of 59, 135, 102, and 15 people per day.

scholarly journals Assessing community resilience to natural disaster and climate change in Maitara Island, North Maluku-Indonesia

2018 ◽  
Vol 229 ◽  
pp. 02002
Author(s):  
Mohammad Ridwan Lessy ◽  
Jefry Bemba ◽  
Nani Nagu
Keyword(s):  
Climate Change ◽  
Quantitative Methods ◽  
Secondary Data ◽  
Coastal Communities ◽  
Disaster Mitigation ◽  
Primary Data ◽  
Small Island ◽  
Small Islands ◽  
Human Aspects ◽  
Resilience Index

Small Islands face some of the main problems of any coastal area due to climate change and natural disasters. This study aims to analyze the resilience of coastal communities on a small island in terms of disasters and climate change, and to identify the strategies and adaptations that communities have undertaken as anticipatory for disaster and climate change in the future. Qualitative analysis combined with quantitative methods is used in this research to provide a clear estimate of the categories of resilience in each village. The primary data was collected by using interviews and focus discussion group and secondary data acquired through the documentation on related stakeholders. The resilience index provided by the Ministry of Maritime and Fisheries Affairs is used to categorize the resilience scales of villages. The results of this study show that the human aspects and natural resources aspects have high scores in resilience, but disaster and climate change aspects; environmental/infrastructures aspects; and economic aspects should be improved. Furthermore, the community had been taking participation in disaster mitigation.

scholarly journals Study analysis of landslide vulnerability of mining area in the sub-district Lembah Gumanti, Solok regency (lubuk selasih street– surian)

2021 ◽  
Vol 331 ◽  
pp. 06007
Author(s):  
Momon ◽  
Bayu Martanto Adji ◽  
Desi Widia Kusuma ◽  
Elsa Yolarita ◽  
Vivi Ukhwatul ◽  
...  
Keyword(s):  
Quantitative Methods ◽  
Secondary Data ◽  
Mining Area ◽  
Environmental Damage ◽  
Mining Areas ◽  
Maintenance And Rehabilitation ◽  
High Level ◽  
National Road ◽  
Steep Slopes ◽  
Very High

Open access land mining activities on the Lubuk Selasih – Surian national road have in floods and landslides that have, in losses to the community and the imposition of costs for maintenance and rehabilitation of federal roads along the mining area. This study aims to determine the existing condition of mining and analyze the vulnerability of erosions in mining areas. The data used is secondary data, using descriptive quantitative methods with photogrammetric analysis of the maps obtained. The results showed that this mining area has the characteristics of rocks that are easily crushed and tend to be unstable, as well as steep and very steep slopes. This area is also located on the active Semangko fault and volcanic mountains. The environmental carrying capacity of disaster prevention and protection ecosystem services is mainly in the shallow categories. Based on these findings, the mine site is at a very high level of vulnerability to erosions. Thus, it is necessary to mitigate mining management administratively and operationally to minimize environmental damage

scholarly journals Comparison of the Dominance of Internal and External Influences on the Return of Shares of Companies Listed in IDX30

2021 ◽  
Vol 4 (1) ◽  
pp. 16
Author(s):  
Hutama Sanputra Arifin ◽  
Tri Ramaraya Koroy ◽  
Gemi Ruwanti ◽  
Zainal Arifin
Keyword(s):  
Economic Growth ◽  
Stock Returns ◽  
Quantitative Methods ◽  
Environmental Changes ◽  
Financial Analysis ◽  
Stock Exchange ◽  
Secondary Data ◽  
Share Price ◽  
Return On Equity ◽  
High Level

<p><em>This study aims to determine the comparison of external and internal influences on stock returns on the Indonesia Stock Exchange. The research method uses quantitative methods from secondary data of financial analysis on 16 companies from 30 companies on the IDX Index that have a high level of liquidity and have a large capitalization selected by the IDX (Indonesia Stock Exchange) with several selection criteria, the selection is carried out by the IDX regularly 2 times every year, namely in February and August. from 2014-2018 and data from Bank Indonesia on economic growth and inflation in the same year. </em><em>The data analysis technique used</em><em> </em><em>multiple regression. </em><em>The results show that the influence of external factors in the form of economic growth and inflation is more dominant than the company's internal factors in the form of DY (Dividend Yield), EPS (Earning Per Share), ROE (Return On Equity), PER (Price Earning Ratio) affect stock returns. </em><em>Implementation for companies that go public needs to pay attention to the dynamics of environmental changes, especially the inflation rate which can cause investors to sell their shares, while this phenomenon is an opportunity for some investors to get a cheaper share price than many other investors have released.</em></p>

scholarly journals Kesesuaian dan daya dukung lingkungan untuk pengembangan ekowisata di kawasan hutan Gunung Mareje Utara Kabupaten Lombok Tengah

2021 ◽  
Vol 8 (1) ◽  
pp. 17
Author(s):  
Nawari Nawari ◽  
Isjoni Isjoni ◽  
Zulkarnaini Zulkarnaini
Keyword(s):  
Carrying Capacity ◽  
Secondary Data ◽  
T Test ◽  
Land Suitability ◽  
Limiting Factors ◽  
Primary Data ◽  
Mountain Forest ◽  
Suitability Analysis ◽  
Land Utilization ◽  
Environmental Carrying Capacity

North Mareje Mountain Forest Area (NMMFA) is one of important areas for ecotourism development in Lombok Island. Currently  integrated ecotourism management plan (IEMP) is not available for this area, it has caused land degradation and natural disasters. To support sustainable IEMP establishment, this study was conducted with objectives to analyze land suitability and assessing the environmental carrying capacity of ecotourism development. The study conducted in NMMFA, Serage Village, Central Lombok, NTB during January - March 2020. The data used in this study include attractiveness, landscape naturalness, bio-geophysical limiting factors, accessibility, optimal space requirements and length time of tourist activities. Secondary data compiled from various sources and primary data collected by field observations and interviews. Land suitability analysis used weighted linear combination (WLC), environment carrying capacity analyzed by Douglas Method  (Zacarias et al., 2011) and the evaluation conducted by t-test. Based on the analysis,  explained that land suitable area for ecotourism in  NMMFA is 1.235,2 Ha (75,8% of total area). Effective carrying capacity (ECC) is 32.729 visitors/day. The important indicators contributed to land suitability include soil conservation, tree diversity, visibility and natural attractiveness. T-test analysis shows that the actual landuse for ecotourism smaller than potential area, the average number of tourist visits in the area also smaller than the ECC. It can be concluded if the current land utilization have been meet with land suitability and environmental carrying capacity.

scholarly journals Rainwater Harvesting to Increase Freshwater Carrying Capacity on Small Islands (A Case Study of Pramuka Island)

2021 ◽  
Vol 921 (1) ◽  
pp. 012058
Author(s):  
P Girdayanto ◽  
P Davey ◽  
A Munir
Keyword(s):  
Carrying Capacity ◽  
Catchment Area ◽  
Large Scale ◽  
Rainwater Harvesting ◽  
Small Island ◽  
Small Islands ◽  
Rapid Population Growth ◽  
High Demand ◽  
Minimum Standards

Abstract Pramuka Island is a small island that is covered with dense settlements, inhabited by 1,715 people, and experiencing rapid population growth with increasing visits by tourists every year ]. As a result, there is a high demand for freshwater, leading to a large-scale exploitation of groundwater on the island. Yet, a research conducted by [1] had indicated that groundwater on Pramuka Island is below the minimum standards for drinking water. This report discusses the effectivity of a rainwater harvesting system as a solution to the freshwater carrying capacity of Pramuka Island. The discussion involves analysis of freshwater carrying capacity based on water balance calculations between freshwater supply with rainwater harvesting and potential freshwater demands for domestic usage, tourism, and other activities. The results revealed that the scenario of the whole island as a rainwater catchment area is enough to supply local freshwater demand for approximately 27 years.

scholarly journals MODEL DINAMIK TINGKAT KERENTANAN PANTAI PULAU POTERAN DAN GILI LAWAK KABUPATEN SUMENEP MADURA

2017 ◽  
Vol 10 (1) ◽  
pp. 78
Author(s):  
Maulinna Kusumo Wardhani ◽  
Akhmad Farid
Keyword(s):  
Steady State ◽  
Adaptive Capacity ◽  
Dynamic Model ◽  
Closed System ◽  
Vulnerability Index ◽  
Small Island ◽  
Stable Steady State ◽  
Small Islands ◽  
Coastal Vulnerability ◽  
High Level

<div class="WordSection1"><p><em>Pulau Poteran dan Pulau Gili Lawak Kabupaten Sumenep merupakan pulau-pulau kecil yang berada di sebelah barat Pulau Madura dengan kawasan darat dan perairan yang cukup potensial. Tujuan dari penelitian ini adalah pembuatan model dinamik kerentanan pantai pulau-pulau kecil tersebut berdasarkan aspek ekologi, sosial dan ekonomi sebagai upaya awal menetukan perencanaan pengelolaan yang berkelanjutan dan memetakannya. Analisis yang akan dilakukan pada penelitian ini merupakan penetapan variabel-variabel indeks kerentanan pantai pulau-pulau kecil (PPK) dan memodelkan dinamika kerentanan pantai pulau-pulau tersebut. Variabel-variabel tersebut meliputi, (1) Keterpaparan (Exposure), (2) Kepekaan (Sensitivity) dan (3) Daya Adaptasi (Adaptive Capacity). </em><em>Pengembangan model simulasi dinamis ini bertujuan untuk mempelajari tingkat kerentanan pantai di Pulau Poteran dan Gili Lawak Kecamatan Talango Kabupaten Sumenep didasarkan pada beberapa asumsi, yaitu: (1) model tersebut berada dalam kondisi tetap atau stabil (steady state), (2) model tersebut dianggap suatu sistem yang tertutup (closed system). </em><em>Parameter kenaikan muka laut rata-rata tiap tahun, tingkat erosi dan kepadatan penduduk merupakan parameter dinamik yang menyebabkan nilai kerentanan tinggi di Pulau Poteran, sedangkan parameter lamun mengakibatkan dimensi daya adaptif diPulau Gili Lawak menjadi lebih tinggi dari dimensi yang lain.Tingkat kerentanan pantai Pulau Poteran dan Gili Lawak berada pada kategori sedang dan berdasarkan model dinamik yang dibuat kedua pulau tersebut akan berada pada tingkat kerentanan sangat tinggi pada tahun ke 3 jika tidak dilakukan peningkatan kapasitas adaptif habitat pesisir.</em></p><p><em> </em></p><p><strong>Kata Kunci:</strong> <em>Model Dinamik, Kerentanan, Pulau Kecil</em></p></div><p><strong><br /></strong></p><p align="center"><strong><em>DYNAMICS MODEL OF COASTAL VULNERABILITY OF POTERAN AND GILI LAWAK ISLAND, SUMENEP, MADURA</em></strong></p><p><em>Poteran and Gili Lawak Island Sumenep Regency is a small islands that located in the west of Madura with potential terrestrial and marine areas. The purpose of this research is the dynamic modeling of coastal vulnerability of small islands are based on ecological, social and economic as an initial effort determine the sustainable management planning and mapping. The analysis will be performed in this study is the determination of variables coastal vulnerability index for small islands and the dynamics models of the vulnerability for coastal islands. These variables include, (1) Exposure, (2) Sensitivity and (3) Adaptive Capacity. The development model of dynamic simulation was done to evaluate the beach vulnerability on the Poteran and Gili Lawak Island at Talango District Sumenep based on several assumptions, they are (1) the model was in a state of permanent or stable (steady state), (2) the model considered a closed system. Mean sea level rise per year, erosion rate and population density are dynamic parameters that causes high of vulnerability value in Pulau Poteran, while the sea-grass parameter on Gili Lawak Island causes the value of adaptive capasity demention is higher than other dimensions.The level of beach vulnerability of Poteran and Gili Lawak Island at middle category and was based on a dynamic model created two islands will be at a very high level of vulnerability in the third yearif not increase the adaptive capacity of coastal habitats.</em></p><p><em> </em></p><p><strong>Keywords</strong>:<em> Dynamic Model, Beach Vulnerability, Small Island</em></p><p><strong><br clear="all" /> </strong></p>

THE INFLUENCE OF INQUIRY AND DISCOVERY LEARNING METHOD AND CREATIVITY LEVEL IN WRITING SKILLS DESCRIPTION IN NAUTIC TARUNA AND TECHNIQUE IN SURABAYA SHIPPING POLYTECHNIC

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Ni Putu Dian Permata Prasetyaningrum
Keyword(s):  
Quantitative Methods ◽  
Writing Skills ◽  
Discovery Learning ◽  
Learning Method ◽  
Test Results ◽  
Learning Methods ◽  
Is Research ◽  
Investigation Methods ◽  
High Level ◽  
Discovery Method

Surabaya Shipping Polytechnic emphasizes on certain areas of expertise that Taruna must possess. This is the basis after graduating from shipping polytechnics, cadets must have expertise and skills. The purpose of this study was to study the effect of inquiry, discovery learning, and creativity levels on the ability to write descriptive essays on nautical and technical cadets at Surabaya Shipping Polytechnic. This type of research is research. This research uses quantitative methods using experiments. The location used in this research is Surabaya Shipping Polytechnic. The subjects in this study were the cadets of the Nautika A, Nautika B, Teknika A, and Teknika B. classes. Based on the results of the research and discussion, the following conclusions are obtained: There are those that can be solved looking for description essays in the cadets. learning discovery method. The test results show better investigation methods than the discovery of learning, There is a difference in the ability to write a description essay about cadets who have a high level of creativity with cadets who have a low level of creativity, the test results show better who have a high level of creativity, there are related with learning methods and descriptions of the ability to write essay descriptions, the test results show learning methods and creativity descriptions of the ability to write essay descriptions.

Pemetaan Pulau Kecil Gelasa Kabupaten Bangka Tengah

2019 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
Wahyu Adi
Keyword(s):  
Coral Reefs ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Image Interpretation ◽  
Vegetation Coverage ◽  
Small Island ◽  
Shallow Waters ◽  
Small Islands ◽  
Seagrass Beds ◽  
Cover Density

Pulau Kecil Gelasa merupakan daerah yang belum banyak diteliti. Pemetaan ekosistem di pulau kecil dilakukan dengan bantuan citra Advanced Land Observing Satellite (ALOS). Penelitian terdahulu diketahui bahwa ALOS memiliki kemampuan memetakan terumbu karang dan padang lamun di perairan dangkal serta mampu memetakan kerapatan penutupan vegetasi. Metode interpretasi citra menggunakan alogaritma indeks vegetasi pada citra ALOS yaitu NDVI (Normalized Difference Vegetation Index), serta pendekatan Lyzengga untuk mengkoreksi kolom perairan. Hasil penelitian didapatkan luasan Padang Lamun di perairan dangkal 41,99 Ha, luasan Terumbu Karang 125,57 Ha. Hasil NDVI di daratan/ pulau kecil Gelasa untuk Vegetasi Rapat seluas 47,62 Ha; luasan penutupan Vegetasi Sedang 105,86 Ha; dan penutupan Vegetasi Jarang adalah 34,24 Ha.   Small Island Gelasa rarely studied. Mapping ecosystems on small islands with the image of Advanced Land Observing Satellite (ALOS). Previous research has found that ALOS has the ability to map coral reefs and seagrass beds in shallow water, and is able to map vegetation cover density. The method of image interpretation uses the vegetation index algorithm in the ALOS image, NDVI (Normalized Difference Vegetation Index), and the Lyzengga approach to correct the water column. The results of the study were obtained in the area of Seagrass Padang in the shallow waters of 41.99 ha, the area of coral reefs was 125.57 ha. NDVI results on land / small islands Gelasa for dense vegetation of 47.62 ha; area of Medium Vegetation coverage 105.86 Ha; and the coverage of Rare Vegetation is 34.24 Ha.

FLOOD ADAPTIVE SETTLEMENTS TOWARDS URBAN DEVELOPMENT IN THE RIPARIAN OF MEUREUDU RIVER, ACEH PROVINCE, INDONESIA

2019 ◽  
Vol 6 (2) ◽  
pp. 47
Author(s):  
Mirza Irwansyah ◽  
Cut Nursaniah ◽  
Laila Qadri
Keyword(s):  
Quantitative Methods ◽  
Secondary Data ◽  
Easy Access ◽  
Water Runoff ◽  
Pattern Design ◽  
The People ◽  
Large Numbers ◽  
Aceh Province ◽  
Secondary Data Sources ◽  
Residential Pattern

Meureudu Riparian in the past was a place of a collective settlements; it was then developed  to become a Meureudu City in Aceh Province, Indonesia. Initially, it was formed as traditional fishermen settlements but now has shifted into semi-modern settlements. However, the settlements developed sporadically to form an unplanned pattern of settlements. This condition resulted in low maintaining river and non-adaptive existence of the dwellings with the environment. Floods occur repeatedly in the river that affected great lost to the community. This study aimed to propose residential pattern design and adaptive settlements with Meureudu River riparian. Easy access roads to markets will facilitate economy growth to the people. This will also cause large numbers of unbridled migrants to enter and build settlements. In this study the a combination of quantitative methods based on interview data and questionnaires and qualitative exploratory methods based on field observation were used. The data were collected through observation, field measurement and secondary data sources. The results show that the condition of settlements along the river basin do not reflect the culture of the river. In order not to further aggravate the condition of the settlement and its impact on the occupants, we recommended two types of houses, namely in the form of stage and non-stage. The stage houses are located on the riverfront with an orientation overlooking the river. Additionally, undersea area can be used as security from the puddle of river water runoff during the flood and as a garden area and public while dry­­, while at a distance of 100 meters from the river non-stage houses form would be built because the runoff of flood water no longer affects the occupancy.

scholarly journals Process Stability, Microstructure and Mechanical Properties of Underwater Submerged-Arc Welded Steel

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1249
Author(s):  
Maofu Zhang ◽  
Yanfei Han ◽  
Chuanbao Jia ◽  
Shengfa Dong ◽  
Sergii Maksimov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Water Glass ◽  
Welding Process ◽  
Process Stability ◽  
Surrounding Water ◽  
Welded Steel ◽  
Underwater Wet Welding ◽  
Marine Engineering ◽  
High Level

In underwater wet welding, the unstable welding process caused by the generation and rupture of bubbles and the chilling effect of water on the welding area result in low quality of welded joints, which makes it difficult to meet the practical application of marine engineering. To improve the process stability and joining quality, a mixture of welding flux with a water glass or epoxy resin was placed on the welding zone before underwater welding. In this paper, welds’ appearance, geometry statistics of welds’ formation, welding process stability, slag structure, microstructure, pores and mechanical properties were investigated. It was found that with the addition of water glass in the mixture, the penetration of weld was effectively increased, and the frequency of arc extinction was reduced. Though the porosity rose to a relatively high level, the joints’ comprehensive mechanical properties were not significantly improved. Notably, the applied epoxy resin completely isolated the surrounding water from the welding area, which greatly improved process stability. Furthermore, it benefited from the microstructure filled with massive acicular ferrite, the average elongation and room temperature impact toughness increased by 178.4%, and 69.1% compared with underwater wet welding, respectively, and the bending angle of the joint reaches to 180°.

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