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Growing Science » Authors » Riaman Riaman

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Sort articles by: Volume | Date | Most Rates | Most Views | Reviews | Alphabet
1.

Estimating the Value-at-Risk (VaR) in stock investment of insurance companies: An application of the extreme value theory Pages 749-758 Right click to download the paper Download PDF

Authors: Riaman Riaman, Amarulla Octavian, Sudradjat Supian, Sukono Sukono, Jumadil Saputra

DOI: 10.5267/j.dsl.2023.7.001

Keywords: Risk, Investment, Insurance, Extreme Value Theory

Abstract:
As a capital market investment, stocks have risks that must be managed. Therefore, investors should consider the returns and risks of investment products. This study aims to estimate the risk of insurance companies' loss when investing. The method used to estimate the level of risk is Value at Risk (VaR) based on Extreme Value Theory (EVT). The data used is secondary data in the form of daily stock closing prices from two insurance companies, AXA General Insurance and BRI Insurance, from January 2016 to January 2022. The data were used to estimate the risk value according to the EVT principle. As a result, Insurance AXA General Insurance, with 5.91% liquidity, has the lowest VaR value with a 99% confidence level, while BRI Insurance has 5.04%. We concluded from these results that AXA General Insurance has a lower investment risk. It means that each company has a different risk value. Therefore, investors should know these risk factors when choosing a company.
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Journal: DSL | Year: 2023 | Volume: 12 | Issue: 4 | Views: 1036 | Reviews: 0

 
2.

Analyzing the community decision making to purchase pet insurance: Case study of animal lovers in Indonesia Pages 29-40 Right click to download the paper Download PDF

Authors: Sukono Sukono, Dwi Susanti, Fadhilla Ridwan, Riaman Riaman, Elis Hertini, Jumadil Saputra

DOI: 10.5267/j.dsl.2022.10.008

Keywords: Buying decision making, Stated Preference, Dichotomous Choice, Contingent Valuation Method, Pet Insurance

Abstract:
This study aims to measure people's decision-making to buy their pet insurance and compare it with the amount of insurance premium rates offered. It is important due to the increase in people's income which has triggered the birth of a community of pet lovers as part of the middle-class people’s lifestyle in Indonesia. The survey data was conducted using the Stated Preference (SP) format through questionnaires and interviews to determine the public response to pet insurance premiums. The collected data were analyzed using descriptive methods, decision-making analysis was on the basis of the choice of the dichotomous Contingent Valuation Method (CVM), and logistic regression analysis. Based on the calculation analysis using the logit method shows that the ability of the public to pay pet insurance premiums is IDR289,454.54. Analysis of calculations using the Turnbull method was obtained at IDR365,000.00. The results of the WTP amount, both using the logit method and using the Turnbull method, are greater than the minimum premium amount offered which is IDR190,000.00. The results of this study indicate that the premium rates for pet insurance offered are still within reasonable limits, compared to the size of the decision-making by the animal lover community in Indonesia. This provides a very good prospect for insurance companies that have insurance products for pets in Indonesia. This study was conducted to provide empirical evidence that the decision-making of the animal lover community is greater than the premium rate for pet insurance that has been offered. Thus, this research strongly supports the development of pet insurance companies in Indonesia, which can provide pet protection to stay healthy and well looked after.
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Journal: DSL | Year: 2023 | Volume: 12 | Issue: 1 | Views: 2564 | Reviews: 0

 
3.

Determination of the natural disaster insurance premiums by considering the mitigation fund reserve decisions: An application of collective risk model Pages 211-222 Right click to download the paper Download PDF

Authors: Sukono Sukono, Kalfin Kalfin, Riaman Riaman, Sudradjat Supian, Yuyun Hidayat, Jumadil Saputra, Mustafa Mamat

DOI: 10.5267/j.dsl.2022.4.002

Keywords: Natural disasters, Mitigation Fund Reserve Decisions, Collective Risk Model, Insurance premium

Abstract:
In Indonesia, natural disasters cases have significantly increased from time to time and have the largest impact on economic losses. To avoid losses in the future due to natural disasters, the insurance company needs to estimate the risk and determine the rate of premium that would be charged to the policyholder. In conjunction with the present issue, this study seeks to determine the premium rate and estimate the size claim of insurance by considering the mitigation fund reserve decisions using The Collective Risk Model (CRM). The data was analyzed using the Poisson process with Weibull distribution to determine the natural disaster frequency and losses. The distribution of losses is estimated using Maximum Likelihood Estimation (MLE), and the magnitude of losses was estimated using the CRM. Also, the mean and variance estimators of the aggregate risk were used to estimate the premium charged. The results indicated that expectation and variance of the frequency of incident claims have the same value, i.e., 2562. Also, the loss claims follow the Weibull distribution with the expected value and variance of 5.81309×1010 and 2.5301×1022, respectively. The mean and variance of the aggregate (collective) claims are 148,931,365,800,000 and 7.35×1025, respectively. In conclusion, this study has successfully determined the efficient pure premium model through the Standard Deviation Principle (SDP). SDP provides a much cheaper premium than the Expected Value Principle with the same loading factor. In addition, SDP considers the standard deviation of the collective risk of natural disasters. The implications of the results of the premium determination are expected to be the basis for decision-making for insurance companies and the government in determining insurance policies for natural disaster mitigation.
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Journal: DSL | Year: 2022 | Volume: 11 | Issue: 3 | Views: 1586 | Reviews: 0

 
4.

Analysing the decision making for agricultural risk assessment: An application of extreme value theory Pages 351-360 Right click to download the paper Download PDF

Authors: Riaman Riaman, Sukono Sukono, Sudradjat Supian, Noriszura Ismail

DOI: 10.5267/j.dsl.2021.2.003

Keywords: Agricultural Insurance, Risk Assessment, Climate Variables, Extreme Value Theory

Abstract:
As the most contributed sectors in agriculture, rice farming is facing various risks, namely uncertainty such as crop failure caused by climate change, including air temperature, weather, rainfall and others. Indonesia is categorised as an agricultural country with a tropical climate. By this season, the farmers can plant the rice. Rice farming is currently an inseparable part of most agricultural societies in Indonesia, especially in West Java. However, changes in air temperature, weather and annual rainfall, can increase the uncertainty and upward the risk of crop failure. Thus, the current study seeks to investigate the decision making for agricultural risk assessment (climate variable) through the formulation of a risk model for agricultural insurance in Indonesia. This study utilised the climate variables, which consist of air temperature, wind speed, maximum and minimum temperatures, and rainfall. For determining the magnitude of risk, we applied the Block Maxima method and Peak Over Threshold. The results of this study found that the highest risk of losses occurred in November, December, January, February and March with a value of 0.17485.
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Journal: DSL | Year: 2021 | Volume: 10 | Issue: 3 | Views: 1538 | Reviews: 0

 
5.

Determinant factors of fishermen income and decision-making for providing welfare insurance: An application of multinomial logistic regression Pages 175-184 Right click to download the paper Download PDF

Authors: Sukono Sukono, Riaman Riaman, Titin Herawati, Jumadil Saputra, Endang Soeryana Hasbullah

DOI: 10.5267/j.dsl.2020.11.002

Keywords: Decision-making, Fishermen income, Fishermen welfare, Multinomial logistic regression

Abstract:
As a country surrounded by the ocean, Indonesia is categorized as a country that has marine potential. The fishermen communities’ economy depends on ocean. However, the fishermen communities live below the poverty line and their average income is less than regional minimum wage. In conjunction with the issue, this study seeks to investigate the factors affecting the income of fishermen communities and right decision to fishermen in covering with welfare insurance in Cirebon, Indonesia. The quantitative study is designed using cross-sectional approach. The data collected by applying random sampling with open-ended questions and interview. A total of 100 fishermen’s have participated in this study. The study used some factors in measuring the fishermen community income, namely coastal environment condition, fish catching technology and location, operational capital, climate (season) condition, fishermen’s age, fishermen’s education, and fishing experience. The data are analyzed using the multinomial logistic regression model by assisting the statistical software, i.e., SPSS-23. The results show that coastal environment condition, fish catching technology and location, operational capital, climate (season) condition, fishermen’s age, fishermen’s education, and fishing experience have significant effects on fishermen income. Interestingly, the factor of coastal environment condition and climate (season) condition have significant negative effects on fishermen income. In conclusion, this study identified that two important factors reduced the welfare level of fishermen (via income). Also, in line with that things, the right decision which can provide to support and assist the fishermen community was by providing the welfare insurance. It is purposely to give them the protection from various risks faced by fishermen.
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Journal: DSL | Year: 2021 | Volume: 10 | Issue: 2 | Views: 3078 | Reviews: 0

 
6.

Investigating the agricultural losses due to climate variability: An application of conditional value-at-risk approach Pages 71-78 Right click to download the paper Download PDF

Authors: Sukono Sukono, Riaman Riaman, Sudradjat Supian, Yuyun Hidayat, Jumadil Saputra, Diantiny Mariam Pribadi

DOI: 10.5267/j.dsl.2020.10.002

Keywords: Allocation of agricultural land, Climate variable, Crop insurance, Optimization, Risk measure, Optimal Decision

Abstract:
The agricultural sector is directly affected by climate variables. The presence of climate variability causes a considerable risk to agricultural productivities. Thus, risk management is an alternative to reduce risks, including optimizing the allocation of farmland and choosing crop insurance for a specific planting date. The purpose of this study is to investigate the agricultural risk management through risk measure of climate variability using the Conditional Value-at-Risk (CVaR) in rice production. This paper investigated several possible considerations of agricultural insurance premiums based on losses climate index. We concluded that the climate index insurance policy is the best choice that farmers can choose for each planting date, the higher the significance value considered, the more the value of Value-at-Risk and Conditional Value-at-Risk.
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Journal: DSL | Year: 2021 | Volume: 10 | Issue: 1 | Views: 1596 | Reviews: 0

 

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