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Article
Publication date: 12 June 2017

Iwan Aang Soenandi, Taufik Djatna, Ani Suryani and Irzaman Irzaman

The production of glycerol derivatives by the esterification process is subject to many constraints related to the yield of the production target and the lack of process…

Abstract

Purpose

The production of glycerol derivatives by the esterification process is subject to many constraints related to the yield of the production target and the lack of process efficiency. An accurate monitoring and controlling of the process can improve production yield and efficiency. The purpose of this paper is to propose a real-time optimization (RTO) using gradient adaptive selection and classification from infrared sensor measurement to cover various disturbances and uncertainties in the reactor.

Design/methodology/approach

The integration of the esterification process optimization using self-optimization (SO) was developed with classification process was combined with necessary condition optimum (NCO) as gradient adaptive selection, supported with laboratory scaled medium wavelength infrared (mid-IR) sensors, and measured the proposed optimization system indicator in the batch process. Business Process Modeling and Notation (BPMN 2.0) was built to describe the tasks of SO workflow in collaboration with NCO as an abstraction for the conceptual phase. Next, Stateflow modeling was deployed to simulate the three states of gradient-based adaptive control combined with support vector machine (SVM) classification and Arduino microcontroller for implementation.

Findings

This new method shows that the real-time optimization responsiveness of control increased product yield up to 13 percent, lower error measurement with percentage error 1.11 percent, reduced the process duration up to 22 minutes, with an effective range of stirrer rotation set between 300 and 400 rpm and final temperature between 200 and 210°C which was more efficient, as it consumed less energy.

Research limitations/implications

In this research the authors just have an experiment for the esterification process using glycerol, but as a development concept of RTO, it would be possible to apply for another chemical reaction or system.

Practical implications

This research introduces new development of an RTO approach to optimal control and as such marks the starting point for more research of its properties. As the methodology is generic, it can be applied to different optimization problems for a batch system in chemical industries.

Originality/value

The paper presented is original as it presents the first application of adaptive selection based on the gradient value of mid-IR sensor data, applied to the real-time determining control state by classification with the SVM algorithm for esterification process control to increase the efficiency.

Details

International Journal of Intelligent Computing and Cybernetics, vol. 10 no. 2
Type: Research Article
ISSN: 1756-378X

Keywords

Article
Publication date: 2 May 2023

Ahmad Bukhori Muslim, Fuad Abdul Hamied, Moh Fakry Gaffar, Maria Elvira Asuan, Syakirah Samsudin, Watsatree Diteeyont, Margana Margana, Ani Wilujeng Suryani, Jessie PNG, Rini Solihat, Tina Priyantin, Nina Cassandra, Gunadi Gunadi and Sumalee Sitthikorn

This study aims to explore some benefits and challenges of establishing an international accreditation for teacher education institutions (TEIs) by AsTEN Quality Assurance Agency…

Abstract

Purpose

This study aims to explore some benefits and challenges of establishing an international accreditation for teacher education institutions (TEIs) by AsTEN Quality Assurance Agency. This specific accreditation agency is expected to improve the quality of teaching, learning and research at TEIs in ASEAN region.

Design/methodology/approach

The qualitative study generates data from questionnaires and online semi-structured interviews among ASEAN academics. They work as teacher educators in Indonesia, Singapore, Thailand and Malaysia.

Findings

As findings show, participating academics from Indonesia, Singapore, Malaysia, the Philippines, Thailand and Brunei Darussalam believe that it is necessary to have a specific international accreditation agency that can properly accommodate particular standards of teacher education. This accommodation is expected to increase the governance of quality teaching, learning and researching to prepare more competent and professional future teachers. Participating academics also acknowledge some potential challenges this specific accreditation agency may have, including local acceptance by national governments in ASEAN region and global acknowledgement from international accrediting agencies, mostly based in Global North countries.

Research limitations/implications

The study only involves academics in five ASEAN countries of Indonesia, Malaysia, Singapore, Thailand and the Philippines so that it may have less international acceptance.

Practical/social implications

The study also identifies aspects and mechanisms of blended online-onsite international accreditation application for TEIs, which grows its significance because of technological advancement, efficiency and prolonged COVID-19 pandemic.

Originality/value

The study provides a digital accreditation system for TEIs, particularly in ASEAN region. This originality is important in this era of Internet of Things.

Details

Quality Assurance in Education, vol. 31 no. 4
Type: Research Article
ISSN: 0968-4883

Keywords

Article
Publication date: 19 April 2023

Sri Pujiningsih, Ani Wilujeng Suryani, Ika Putri Larasati and Sharifah Norzehan Syed Yusuf

This study aims to discover the role of accounting and media in hegemonic discourse for divestment valuation of PT Freeport Indonesia shares.

Abstract

Purpose

This study aims to discover the role of accounting and media in hegemonic discourse for divestment valuation of PT Freeport Indonesia shares.

Design/methodology/approach

This study employs data from 608 news articles from 5 national media. This study uses Gramsci's concept of hegemony and Laclau and Mouffe's hegemonic discourse to explore the ideological role of accounting in the formation of historical blocs and investigate the contestants' discursive strategies through the chains of equivalence and difference.

Findings

The incumbent presidential candidate, by involving political and intellectual actors, has succeeded in taking over and shifting PT Freeport Indonesia's hegemony to maintain its power, through the ideology of divestment and accounting. The media played a role in the victory of the pro-divestment bloc in the hegemonic divestment discourse contest. The pro-divestment bloc's discursive strategy uses more formal and technical language styles than the anti-divestment bloc, which uses informal language styles. The pro-divestment bloc uses the key signifiers of low price, improved financial performance, nationalization and welfare, as opposed to the anti-divestment bloc, with the key signifiers of high price, declining financial performance and neoliberalist colonization.

Practical implications

The implications of this research may encourage accounting academics to contribute to emancipatory social movements in the struggle for hegemony. The implication for policy makers is the importance of involving the public, intellectual actors, political actors and the media in supporting diverse state strategic policies in the national interest.

Originality/value

This paper contributes to Gramsci's theory of hegemony and Laclau and Mouffe's hegemonic discourse to understand the role of accounting and media in a nationalization project as an emancipatory social movement, as well as a hegemonic shifting political movement.

Details

Asian Review of Accounting, vol. 31 no. 4
Type: Research Article
ISSN: 1321-7348

Keywords

Article
Publication date: 30 December 2020

Safriyana Safriyana, Marimin Marimin, Elisa Anggraeni and Illah Sailah

This study aims to construct models to classify independent smallholder farmers’ (ISFs) plantation suitability and its competitiveness index. It proposes the models with the…

Abstract

Purpose

This study aims to construct models to classify independent smallholder farmers’ (ISFs) plantation suitability and its competitiveness index. It proposes the models with the objective to accommodate ISFs as the main source of raw material for the palm oil industry. It was predicted that the supply of oil palm fresh fruit bunch would depend on ISFs’ plantations due to the government policy that restricts the expansion of the plantations.

Design/methodology/approach

The study was designed using a geographic information system approach and analytical hierarchy process for mapping the suitability of smallholder farmers’ oil palm plantation in the Kampar Regency. The competitiveness index was measured using a modified Diamond Porter framework and competitiveness index quantification. The model was conducted on 177 respondents from five districts in Kampar Regency.

Findings

The results indicated that it mapped 128,936.759 hectares area of ISFs’ oil palm plantation in the Kampar Regency. The results of plantation suitability showed that only 13.88% of plantations owned by ISFs were potential, 71.21% of them were in the developing category and 14.91% of plantations were non-potential. The competitiveness index showed there were only 7.91% of them at the developed competitive position, 73.45% at developing a competitive position and 18.64% at the least-developed position.

Practical implications

The paper includes implications for developing ISFs’ capacity building and best practice management for oil palm optimization, resulting in bargaining positions and social well-being.

Originality/value

The study had succeeded to visualize ISFs’ plantation area suitability and competitiveness at Kampar Regency, Riau Province. The model provides a brisk understanding and valuable information about ISFs’ conditions spatially. It offers specific outcomes and becomes important in optimize and develop the existing plantations at the right time and exact location.

Details

Journal of Science and Technology Policy Management, vol. 12 no. 2
Type: Research Article
ISSN: 2053-4620

Keywords

Abstract

Details

Journal of Intelligent Manufacturing and Special Equipment, vol. 4 no. 1
Type: Research Article
ISSN: 2633-6596

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