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Article
Publication date: 22 May 2020

Adi Susilo, Fina Fitriah, Sunaryo, Eng Turniningtyas Ayu Rachmawati and Eko Andi Suryo

Research has been conducted to analyze the landslide in Banaran area, Ponorogo Regency. The landslides occurred on April 1, 2017. This study was conducted to know the subsurface…

289

Abstract

Purpose

Research has been conducted to analyze the landslide in Banaran area, Ponorogo Regency. The landslides occurred on April 1, 2017. This study was conducted to know the subsurface conditions in the Banaran area to analyze the disaster mitigation efforts. The mitigation efforts are made to reduce the risk from landslides and possible landslides.

Design/methodology/approach

The method used is the geo-electric resistivity method of Wenner–Schlumberger configuration. The research was conducted in three villages namely Banaran Village, Bekirang Village and Mendak Village.

Findings

There are 12 resistivity measuring points with a track length of 410 m and a space of 10 m. The measured resistivity range is between 1.42 Ω.m and 67.500 Ω.m. The resistivity data and the local geological maps interpreted that the rocks in the Banaran area consist of clay, tuff lapilli, volcanic breccia and andesite lava. The landslide area begins at a depth of 8–35 m below the surface which is interpreted as tuff. Also, the thickness of the landslide material and the slope is = 400 which supports the occurrence of a more prominent landslide. The results of the parameter scoring of the landslide-prone areas indicated that the research area is very vulnerable to a landslide. The results of the interpretation indicate that the geo-electric resistivity method can provide a good overview for conducting landslide analysis, that is field slippage and potential material thickness occurrence landslide.

Originality/value

This article is very specific as it attempts to discover how prone Banaran are is to landslide.

Details

Smart and Sustainable Built Environment, vol. 9 no. 4
Type: Research Article
ISSN: 2046-6099

Keywords

Article
Publication date: 4 June 2020

Adi Susilo

The purpose of this study at the level of sustainability of oxbow lake was intended to determine the status of sustainability, leverage attributes and driving factors in the…

317

Abstract

Purpose

The purpose of this study at the level of sustainability of oxbow lake was intended to determine the status of sustainability, leverage attributes and driving factors in the management of oxbow lake in Buluh Cina village in Kampar, Riau, Indonesia.

Design/methodology/approach

The types of data collected include primary data and secondary data. Data was collected using survey methods, library research, laboratory analysis and interviews. The analytical method used this study is multidimensional scaling (MDS) analysis and prospect analysis. Sustainability analysis is done using the MDS analysis approach with the help of RapOxbow software and compared to Monte Carlo analysis results.

Findings

The current sustainability status of the management of Lake Baru ecosystem according to a number of dimensions is considered sustainable with a sustainability index value of 50.95. Meanwhile, the analysis results of each dimension shows that the sustainability index for the ecological dimension is 42.56 and the sustainability index for the economic dimension is 47.44, which means that the index is less sustainable.

Originality/value

The approach of this research is MDS analysis and prospect analysis and research locations in Buluh Cina village in Kampar, Indonesia which have never been studied before. This is one of few studies that investigates comprehensively the analysis of management sustainability, especially in the dimensions of ecology, economics and socio-culture, especially in Indonesia.

Details

Journal of Science and Technology Policy Management, vol. 11 no. 4
Type: Research Article
ISSN: 2053-4620

Keywords

Open Access
Article
Publication date: 16 March 2021

Bayu Adi Nugroho

It is crucial to find a better portfolio optimization strategy, considering the cryptocurrencies' asymmetric volatilities. Hence, this research aimed to present dynamic…

1837

Abstract

Purpose

It is crucial to find a better portfolio optimization strategy, considering the cryptocurrencies' asymmetric volatilities. Hence, this research aimed to present dynamic optimization on minimum variance (MVP), equal risk contribution (ERC) and most diversified portfolio (MDP).

Design/methodology/approach

This study applied dynamic covariances from multivariate GARCH(1,1) with Student’s-t-distribution. This research also constructed static optimization from the conventional MVP, ERC and MDP as comparison. Moreover, the optimization involved transaction cost and out-of-sample analysis from the rolling windows method. The sample consisted of ten significant cryptocurrencies.

Findings

Dynamic optimization enhanced risk-adjusted return. Moreover, dynamic MDP and ERC could win the naïve strategy (1/N) under various estimation windows, and forecast lengths when the transaction cost ranging from 10 bps to 50 bps. The researcher also used another researcher's sample as a robustness test. Findings showed that dynamic optimization (MDP and ERC) outperformed the benchmark.

Practical implications

Sophisticated investors may use the dynamic ERC and MDP to optimize cryptocurrencies portfolio.

Originality/value

To the best of the author’s knowledge, this is the first paper that studies the dynamic optimization on MVP, ERC and MDP using DCC and ADCC-GARCH with multivariate-t-distribution and rolling windows method.

Details

Journal of Capital Markets Studies, vol. 5 no. 1
Type: Research Article
ISSN: 2514-4774

Keywords

Article
Publication date: 11 August 2021

Bayu Adi Nugroho

This paper aims to analyze the time-varying connectedness of gold-backed cryptocurrencies and gold. This study determines the volatility spillovers in these two asset classes and…

396

Abstract

Purpose

This paper aims to analyze the time-varying connectedness of gold-backed cryptocurrencies and gold. This study determines the volatility spillovers in these two asset classes and the performance of bivariate portfolios based on net pairwise spillovers.

Design/methodology/approach

This research uses two Islamic and four conventional gold-backed cryptocurrencies and gold as variables. GJR-GARCH method under corrected DCC (cDCC) of Aielli (2013) evaluates the dynamic connectedness. Additionally, the spillovers are created using the dynamic connectedness of Diebold and Yilmaz (2012). A network-based spillover of Diebold and Yılmaz, (2014) is also made. A dynamic optimal weights strategy optimized with DCC-t-Copula determines bivariate portfolios’ performances. In general, there are 21 bivariate portfolios.

Findings

The outbreak of COVID-19 increases the dynamic connectedness of gold and gold-backed cryptocurrencies, which indicates a contagion effect. The results show that gold is the net volatility receiver during the COVID-19 pandemic. Moreover, a portfolio composed of gold and gold-backed cryptocurrency provides high profitability performance but zero hedge effectiveness under optimal weights strategy.

Practical implications

According to bivariate portfolios based on net pairwise spillovers, gold-backed cryptocurrencies' investors should not add gold to their portfolio during the pandemic because it is a net receiver of risk from the cryptocurrencies.

Originality/value

To the best of the author’s knowledge, this is the first paper to create bivariate portfolios composed of gold-backed cryptocurrencies and their underlying asset using DCC-t-Copula.

Details

Journal of Islamic Accounting and Business Research, vol. 12 no. 7
Type: Research Article
ISSN: 1759-0817

Keywords

Book part
Publication date: 21 July 2011

Jon S.T. Quah

Willard A. Hanna's astute observation above about the institutionalization of corruption in Indonesia was published in August 1971, five years after President Soeharto assumed…

Abstract

Willard A. Hanna's astute observation above about the institutionalization of corruption in Indonesia was published in August 1971, five years after President Soeharto assumed power. The origins of corruption in Indonesia can be traced to the Dutch colonial period as bribery was rife among the lowly paid personnel of the Dutch East India Company (Day, 1966, pp. 100–103). However, corruption became institutionalized during President Soeharto's 32-year reign as his cronies and family “made an art form of creaming off many of Indonesia's most profitable ventures … while being protected by monopoly regulations and their relationship to the president” (Kingsbury, 1998, p. 202). Raymond Bonner (1988, p. 80) has used the euphemism “the family business” to describe “the corruption surrounding members of the Suharto family,” which was “a public secret” in 1988.

Details

Curbing Corruption in Asian Countries: An Impossible Dream?
Type: Book
ISBN: 978-0-85724-819-0

Book part
Publication date: 1 December 2017

Charles Musselwhite

There are many cognitive training tests purporting to both measure older people’s cognitive performance, several of which come with associated training that are deemed to improve…

Abstract

There are many cognitive training tests purporting to both measure older people’s cognitive performance, several of which come with associated training that are deemed to improve cognition. This chapter describes cognitive tests that have been claimed to be linked to driver behaviour, and that training on them could improve driver behaviour. Of special interest are tests that could be completed at home on a computer, as it is suggested this could capture many individuals who are worried about attending a driver assessment centre and are not likely to be referred. Findings suggest that UFOV (Useful Field of View) Time Making Trail (A and B) and Dual N have research suggesting that training on them could improve driver performance for older drivers. However, the robustness of the research is debateable. There are also two physiological tests – a neck and shoulder and a general fitness test that also show promising results for improving driver performance. In addition, education and training is purported to improve driver behaviour, but although there is positive feedback from older people who attend and some short-term improvements, research on long-term improvements on driver behaviour are not yet evident. Overall, there are promising results from individual cognitive, physiological tests and from education and training suggesting that reflection on action and feedback from the task is important to improving driver performance but more research is needed.

Details

Transport, Travel and Later Life
Type: Book
ISBN: 978-1-78714-624-2

Keywords

Content available
Book part
Publication date: 26 May 2022

Abstract

Details

Modeling Economic Growth in Contemporary Indonesia
Type: Book
ISBN: 978-1-80262-431-1

Article
Publication date: 6 July 2012

Hendi Yogi Prabowo

The purpose of this paper, which is based on author's PhD study, is to assess the efficacy of Indonesia's credit card fraud prevention from a strategic point of view, using a…

3078

Abstract

Purpose

The purpose of this paper, which is based on author's PhD study, is to assess the efficacy of Indonesia's credit card fraud prevention from a strategic point of view, using a model of payments fraud prevention practice developed by the author based on similar practices in the USA, the UK and Australia.

Design/methodology/approach

Primary and secondary data, particularly from the payments system of the USA, the UK, Australia and Indonesia were used. Such data were collected by means of literature reviews and in‐depth interviews with payments system professionals.

Findings

The author establishes that credit card fraud prevention practice in Indonesia is still at a lower level of robustness than those in the USA, the UK and Australia. Deficiencies in the credit card fraud prevention practice in Indonesia are indicated, inter alia, by a lack of reliable fraud data collection, management and distribution mechanisms as well as a lack of effective and efficient identity management practice. Deficiencies and weaknesses in the system should be identified and action taken to make it more consistent with credit card fraud prevention practices of other countries.

Originality/value

The paper sees credit card fraud prevention practice in Indonesia as a function of many factors which influence one another, based on which the analysis is built.

Details

Journal of Money Laundering Control, vol. 15 no. 3
Type: Research Article
ISSN: 1368-5201

Keywords

Article
Publication date: 24 June 2022

Maitri Patel, Rajan Patel, Nimisha Patel, Parita Shah and Kamal Gulati

In the field of cryptography, authentication, secrecy and identification can be accomplished by use of secret keys for any computer-based system. The need to acquire certificates…

53

Abstract

Purpose

In the field of cryptography, authentication, secrecy and identification can be accomplished by use of secret keys for any computer-based system. The need to acquire certificates endorsed through CA to substantiate users for the barter of encoded communications is one of the most significant constraints for the extensive recognition of PKC, as the technique takes too much time and susceptible to error. PKC’s certificate and key management operating costs are reduced with IBC. IBE is a crucial primeval in IBC. The thought behind presenting the IBE scheme was to diminish the complexity of certificate and key management, but it also gives rise to key escrow and key revocation problem, which provides access to unauthorised users for the encrypted information.

Design/methodology/approach

This paper aims to compare the result of IIBES with the existing system and to provide security analysis for the same and the proposed system can be used for the security in federated learning.

Findings

Furthermore, it can be implemented using other encryption/decryption algorithms like elliptic curve cryptography (ECC) to compare the execution efficiency. The proposed system can be used for the security in federated learning.

Originality/value

As a result, a novel enhanced IBE scheme: IIBES is suggested and implemented in JAVA programming language using RSA algorithm, which eradicates the key escrow problem through eliminating the need for a KGC and key revocation problem by sing sub-KGC (SKGC) and a shared secret with nonce. IIBES also provides authentication through IBS as well as it can be used for securing the data in federated learning.

Article
Publication date: 9 April 2024

Mustafa Raza Rabbani

The study aims to use bibliometric and scientometric analysis to conduct a detailed investigation on the impact of disruptive technologies in accounting and reporting literature…

1006

Abstract

Purpose

The study aims to use bibliometric and scientometric analysis to conduct a detailed investigation on the impact of disruptive technologies in accounting and reporting literature. To draw both academics and practitioners through accelerated research activities, the study also aims to look into the significance of these disruptive technologies, their potential and the opportunities they present for the accounting profession.

Design/methodology/approach

With the use of the Scopus database and a combination of accounting, reporting, auditing and technology-related keywords, 1660 research articles published between 2008 and 2023 were included in the sample. To provide graphical analysis of bibliometric data and visualize research findings such as bibliographic coupling, co-citation and keyword co-occurrence, this study used the R-biblioshiny and VOSViewer tools.

Findings

The findings demonstrate a growth in scholarly interest in the study’s area, particularly in recent years. The bibliometric analysis focuses on three key uses and applications of technology in the accounting and auditing professions: the adoption of continuous auditing and monitoring in the audit profession, the use of software tools in the audit and accounting professions and the connections between information systems and audit.

Originality/value

This study contributes to the literature by examining current research trends on the use of technology in the accounting and reporting professions, identifying gaps in the literature and, most importantly, proposing a research agenda for the field. This study’s data came entirely from English-language articles and reviews in the Scopus database. It also considers studies that are directly relevant to the use of technology in accounting and reporting.

Details

Journal of Accounting & Organizational Change, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1832-5912

Keywords

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