Judul: Livelihood Vulnerability of Coastal Communities in Bintan Regency to Climate Change
Abstrak: Perubahan iklim berdampak pada perubahan intensitas atau frekuensi kejadian iklim ekstrim. Wilayah pesisir merupakan wilayah yang paling rentan terhadap perubahan iklim dan kejadian iklim ekstrim. Perubahan iklim di wilayah pesisir dapat dirasakan dari adanya kecenderungan perubahan suhu, naiknya permukaan air laut dan perubahan karakterisitik curah hujan harian, seperti meningkatnya jumlah hari hujan. Penelitian ini bertujuan untuk mengetahui pengaruh perubahan iklim global terhadap iklim di pesisir Kabupaten Bintan serta menilai kerentanan penghidupan rumah tangga terhadap dampak perubahan iklim di wilayah tersebut. Analisis tren perubahan iklim dilakukan terhadap statistik curah hujan harian yang berkaitan dengan curah hujan ekstrim, salah satunya yaitu curah hujan yang melampaui ambang batas percentile 95%. Data curah hujan bersumber dari data BMKG dan CHIRPS yang dilakukan koreksi bias. Metode Livelihood Vulnerability Index (LVI) dan LVI-IPCC digunakan untuk menilai kerentanan penghidupan masyarakat pesisir. Hasil penelitian menunjukkan tren curah hujan ekstrem selama 30 tahun di Kabupaten Bintan mengalami laju kenaikan pada rentang 0.146 mm/tahun – 0.4015 mm/tahun. Frekuensi kejadian curah hujan ekstrem juga mengalami kenaikan tren sebesar 24 kali setiap tahunnya dengan kejadian tertinggi pada tahun 2011 serta terendah pada tahun 1997. Nilai tertinggi curah hujan eksrem pada threshold persentil 95% sebesar 291 mm/hari dan terendah sebesar 48.89 mm/hari. Kerentanan penghidupan masyarakat Pesisir Kabupaten Bintan berdasarkan 10 komponen utama dan 53 sub komponen berada pada nilai kerentanan sedang baik pada perhitungan LVI (0.37- 0.40) maupun LVI-IPCC (0.002-0.003). Nilai kerentanan LVI tinggi ditemukan pada komponen strategi penghidupan. Pada penilaian IPCC kategori paparan yang diwakili komponen Bencana Alam dan Variabilitas Iklim memberikan tekanan paling besar., Climate change has an impact on changes in the intensity or frequency of extreme climate events. Coastal areas are the most vulnerable to climate change and extreme climate events. Climate change in coastal areas can be felt from the tendency of changes in temperature, rising sea levels and changes in the characteristics of daily rainfall, such as increasing the number of rainy days. This study aims to determine the effect of global climate change on the coastal climate of Bintan Regency and to assess the vulnerability of household livelihoods to the impacts of climate change in the region. Analysis of climate change trends is carried out on daily rainfall statistics related to extreme rainfall, one of which is rainfall that exceeds the 95% percentile threshold. Rainfall data is sourced from BMKG and CHIRPS data which is corrected for bias. Livelihood Vulnerability Index (LVI) and LVI-IPCC methods are used to assess the livelihood vulnerability of coastal communities. The results showed that the trend of extreme rainfall for 30 years in Bintan Regency experienced an increase in the range of 0.146 mm/year – 0.4015 mm/year. The frequency of extreme rainfall events also experienced an increasing trend of 24 times every year with the highest incidence in 2011 and the lowest in 1997. The highest value of extreme rainfall at the 95% percentile threshold was 291 mm/day and the lowest was 48.89 mm/day. The livelihood vulnerability of the coastal communities of Bintan Regency based on 10 main components and 53 subcomponents is at a moderate vulnerability value both in the LVI calculation
Keyword: Iklim ekstrem, Livelihood Vulnerability Index, Livelihood Vulnerability Index – IPCC, Percentile 95%

Judul: Analysis the Level of Vulnerability of Fishermen Households in Response to Climate Change: Case of Pari Island, South Seribu Islands, DKI Jakarta.
Abstrak: Perubahan iklim mengakibatkan terjadinya peningkatan intensitas dan frekuensi cuaca ekstrim, perubahan pola hujan, pengingkatan suhu air laut, dan terjadinya kekacauan musim angin. Dampak tersebut kemudian berpengaruh terhadap tingkat kerentanan rumah tangga nelayan. Penelitian ini menggunakan pendekatan kualitatif dan kuantitatif. Pendekatan kualitatif dilakukan dengan observasi dan wawancara mendalam kepada 4 orang informan sedangkan pendekatan kuantitatif dilakukan dengan menggunakan kuesioner kepada 50 responden dengan teknik snowball. Teknik pengolahan dan analisis data dilakukan menggunakan microsoft excel 2019 dan rumus perhitungan LVI-IPCC. Hasil penelitian menunjukkan bahwa nilai keterpaparan pada RT01 sebesar 0,49 dan RT04 sebesar 0,57. Selanjutnya, nilai kapasitas adaptif RT01 sebesar 0,59 dan RT04 sebesar 0,55. Sementara itu, nilai sensitivitas pada RT01 sebesar 0,40 dan RT04 sebesar 0,42. Nilai komponen tersebut kemudian menghasilkan nilai indeks kerentanan rumah tangga nelayan dimana indeks kerentanan RT04 lebih tinggi dibandingkan RT01 dengan nilai -0,04 pada RT01 dan 0,09 pada RT04. Kata kunci: kerentanan, perubahan iklim, rumah tangga nelayan, Climate change has resulted in an increase in the intensity and frequency of extreme weather, changes in rainfall patterns, increased sea temperatures, and chaotic wind seasons. These impacts then affect the level of vulnerability of fishing households. This research uses qualitative and quantitative approaches. The qualitative approach was conducted through observation and in-depth interviews with 4 informants, while the quantitative approach was conducted using a questionnaire to 50 respondents using the snowball technique. Data processing and analysis techniques were carried out using Microsoft Excel 2019 and the LVI-IPCC calculation formula. The results showed that the exposure value at RT01 was 0.49 and RT04 was 0.57. Furthermore, the adaptive capacity value of RT01 was 0.59 and RT04 was 0.55. Meanwhile, the sensitivity value at RT01 was 0.40 and RT04 was 0.42. The component values then produced the value of the vulnerability index of fishing households where the vulnerability index of RT04 was higher than RT01 with a value of -0.04 in RT01 and 0.09 in RT04. Keywords: climate change, fisher households, vulnerability
Keyword: climate change, Livelihood Vulnerability Index (LVI), fisher household

Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
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