Focus and Scope

TELKOMNIKA (Telecommunication Computing Electronics and Control) publishes six issues per year (February, April, June, August, October and December). The aim of TELKOMNIKA is to publish high-quality articles dedicated to all aspects of the latest outstanding developments in the field of electrical & electronics engineering, and computer science from authors world-wide. Its scope encompasses the engineering of telecommunication, computing, electrical & electronics, and instrumentation & control, which covers, but not limited to, the following scope:

Communication Engineering: Antenna and wave propagation; Communication electronics and microwave; Communication network and systems; Compression through intelligent communication; Cooperative and cognitive wireless networks; Design, modelling and optimisation of photonics devices; Diamond-based photonics devices; Error control coding; Fiber-optic communication; Global navigation satellite systems; High-speed switching architectures; LDPC coding; MIMO systems; Mobile content distribution systems; Modal propagation in electromagnetic optical waveguides; Modulation and signal processing for telecommunication; Multiuser information theory; Nanophotonics; OFDM; Optical networks; Photonic signal processing technologies; Quantum communications; Radar and sonar signal processing; Radar imaging; Radio communication; Robust communication of scalable multimedia content; Routing protocols; Space-time coding; Telematics services and security network; Cognitive radio; Turbo coding; Wideband-CDMA; Wireless and mobile communications; Wireless communications; Wireless network coding; Wireless positioning systems; Wireless security; Wireless sensor network; Wireless systems; Wireless, mobile & satellite communications; etc.

Computer Network and System Engineering: Computer and communication networks: planning, implementation, operation and management of a communications network; Computer control systems design; Micro-controller applications, designs, programming and integration; Microprocessor, digital and electronic theory and application; Network and systems security: mechanisms and techniques for the security and privacy of information in the media and systems that transport and process it; Network communication theory, test, design, and applications; Network implementation and administration; Operating systems; Project Management; Real-time control networks; Software development and applications; Systems management: design, installation and management of different types of services and systems, hardware and software technologies; etc.

Computer Science and Information System: Analog computing; Approximate computing; Big data; Bioinformatics; Blockchain; Business process; Case studies and experimental and theoretical evaluations; Cloud computing (runtime systems, parallel and distributed systems, virtualization, and software-hardware interactions); Cognitive systems; Computational theory and mathematics; Computer architecture; Computer components and interconnection networks; Computer graphics and computer-aided design; Computer network security; Computer networks and communications; Computer organizations and architectures (multicores, accelerators, application-specific, processing-in-memory, near-data processing, and datacenters); Computer science applications; Computer security; Computer vision; Data mining; Data and knowledge level modelling; Dependable computing; Distributed computing system; Edge computing; High performance computing; Human-computer interaction; Human-machine interface; Information management practices; Information retrieval; Information search engine; Internet service architectures; Internet trust and privacy; IT governance; Knowledge based management system; Knowledge discovery in data; Mobile processing; Multimedia security; Networking technology; New and important applications and trends; Next generation media; Next network generation; Operating systems; Parallel and distributed computer; Performance modelling; Performance, fault tolerance, reliability, security, and testability; Pervasive computing; Programming (programming methodology and paradigm); Quantum computing; Neuromorphic computing; Software developments; Software engineering (software: lifecycle, management, engineering process, engineering tools and methods); Software systems;  Specification, design, prototyping, and testing methods and tools; Stochastic systems; Virtual/augmented reality; etc.

Machine Learning, AI and Soft Computing: Agent systems; Ant algorithm; Ant colony optimization; Approximate reasoning; Artificial intelligence; Artificial neural networks; Automated reasoning; Bayesian network; Bayesian statistics; Biologically inspired computing; Brain emotional learning; Business intelligence; Chaos theory; Chaotic systems; Cognitive science; Complex systems theory; Computational creativity; Decision support system; Deep learning; Differential evolution; Early cybernetics and brain simulation; Evolutionary algorithms; Evolutionary computing; Expert system; Functional approximation; Fuzzy logic; Fuzzy set theory; Fuzzy systems; Genetic algorithm; Genetic programming; Hidden Markov model; Hybrid neural network; Intelligent controller; Intelligent system; Kalman filter; Machine intelligence; Machine learning techniques; Metaheuristic; Natural intelligence; Natural language processing (NLP); Nouvelle AI; Neural net systems; Neural science; Neural systems; Particle swarm optimization; Perceptron; Probabilistic models; Randomized search; Recurrent neural network; Regression trees; Superintelligence; Support vector machines; Symbolic AI; Swarm intelligence; etc.

Signal, Image and Video Processing: Acoustic and vibration signal processing; Biomedical imaging and image processing; Biomedical signal processing; Biometrics; Communication signal processing; Compression; Data processing; Detection and estimation; Digital signal & data processing; Digital signal processing; Earth resources signal processing; Emotion detection; Environmental signal processing; Facial recognition systems; Feature extraction; Filtering; Forensic voice comparison; Genomic signal processing; Geophysical and astrophysical signal processing; Handwriting recognition; Image and video compression: scalability, interactivity, international; Image processing: statistical inverse problems, motion estimation; Image processing; Industrial applications; Medical imaging equipment and techniques; Multi-dimensional signal processing; New applications; Emotion and mental state recognition from speech; Optical signal processing; Pattern recognition; Radar signal processing; Remote sensing; Segmentation; Seismic signal processing; Signal processing systems; Signal processing technology; Signal theory; Sonar signal processing; Spectral analysis; Speech and audio coding; Speech and speaker recognition; Speech based emotion recognition; Speech enhancement; Speech modelling and feature extraction; Speech processing, signal processing for audio; Statistical and multidimensional signal processing; Stochastic processes; Video processing; Visual and performance arts; etc.

Electronics Engineering: Amplifying electronic signals; Analog circuits; Application-specific polymer optical fibres and devices; Application-specific silica optical fibres and devices; Bioelectronics; Biomechanics and rehabilitation engineering; Biomedical circuits; Biomedical transducers and instrumentation; Building blocks and systems; Circuit theory and applications; Circuits; Complementary metal–oxide–semiconductor (CMOS); Consumer electronics; Design and implementation of application specific integrated circuits (ASIC); Digital electronics; Electromagnetic theory; Electronic components; Electronic devices; Electronic instrumentation; Electronic materials; Electronic sensors; Electronic systems; Embedded system; Filters; High levels design languages; Integrated circuits; Interface circuits; Measurement and acquisition of physical quantities; Medical electronics; Memristors and memristive circuits; Microcontrollers; Microelectronic system; Microprocessor; Mixed signal circuits; MOSFET; Network analysis and synthesis; Neuromorphic circuits; Organic field-effect transistor; Oscillators; Phase-locked loop (PLL); Printed electronics; Programmable logic chips; Programmable logic devices; RF circuits; Semiconductor devices; Silicon thin-film cell; System-on-a-chip (SoC); Thin film electronics; Thin-film diode; Thin-film memory; Thin-film solar cell; Thin-film transistor; Transform to electrical signals; Transistor; VLSI Design; Voltage-controlled oscillator (VCO); etc.

Electrical Power Engineering: Development modelling and analysis of environmental impact of electric power systems; Development, stability, availability, reliability and operational safety of electric power system subsystems; Disturbances and transient phenomena in power systems; Economic analysis in electrical power engineering; Efficient use of energy and energy conservation; Electric facilities automation; Electric power generation; Electric traction; Electric usage; Electrical apparatus connected to such systems; Electrical engineering materials; Electrical measurements; Electromagnetic compatibility; Energy efficiency methods; Energy management; Environmental protection; Establishment of open market environment, risk management and electrical energy trading; Flexible alternating current transmission system (FACTS); High voltage apparatuses; High voltage insulation technologies; Lightning detection and protection; Mathematical modelling of power plants components and subsystems;  Deterministic and reliability analysis of operational safety; New power system technologies; Optimization methods applied to power systems; Power economic; Power electronics; Power generation; Power transmission and distribution; Power system control and stability; High voltage engineering; Dielectrics and insulation technology; Electrical machinery; Power quality; Power system analysis; Power system protection; Reactive power control; Reliability theory; Renewable energy (wind, solar/photovoltaic, hydro, tidal, geothermal, biomass); Smart grid; Micro grid; Distributed generation; Industrial power systems; Green facilities and industries; Electromagnetic compatibility; SCADA; Theory of power systems control; Transmission and distribution networks network planning; Transmission and distribution; Utilization of electric power; etc.

Power Electronics and Drives: Active components; Adjustable speed drives; Advanced power converter topologies; All types of converters, inverters, active filters, switched mode power and uninterruptible power supplies; Batteries and Fuses; Batteries and management systems (BMS); Contactless power supply; Control and conversion of electric power in electric machine drives; Current control for shunt active power filters using predictive control; Current control of AC/DC or AC/DC/AC converters using predictive control; Current control; Distributed power supplies; Electrical machines; Electronic ballasts and solid-state lighting; EMC and noise mitigation; EV´s battery chargers: contact and contact-less, standards and regulations; Fault coordination and protection of DC grids; Hard and soft switching techniques; High performance drives; High-voltage direct current (HVDC); Model predictive control in industrial electronics; Motion control; New applications of predictive control for power converters; New materials and active devices; Packaging & thermal management; Passive components; Photovoltaic devices; Power converters for electric vehicles; Power electronics and Applications; Power factor correction techniques; Power semiconductor devices; Predictive control for power electronics and drives applications; Simulation and animation in power electronics and drive systems; Special drives; Static Synchronous Compensator (STATCOM); Techniques for controlling, analysing, modelling and/or simulation of power electronics circuits and complete power electronic systems; Uninterruptible power supplies (UPS); Vehicles and applications where a movement is created by an electric propulsion system; etc.

Instrumentation and Control Engineering: Adaptive controls; Advanced computing for measurement; Advanced control techniques; Advanced manufacturing systems; Applications of control theory in industry; Automated guided vehicles; Automation industrial applications; Complex adaptive systems; Control and automation; Control and intelligent systems; Control stochastic; Control theory and applications; Digital control; Distributed control; Dynamic simulation Man/Machine interface; Fault detection and isolation; Fieldbus technology and interfaces; Hybrid and switching control; Image-based control; Industrial automation; Linear and nonlinear control systems; Manufacturing systems and automation; Mathematical control theory; Measurement techniques; Mechatronics; Modelling and identification; Optimization and optimal control; Predictive control; Process control and instrumentation; Process optimization and scheduling; Recent developments in automation and control; Recent trends in control systems; Robotics and applications; Robust control; Sampled-data control systems and digital control; Sensors; Stochastic control and filtering; System identification and control; Systems and automation; Transducer principles; Virtual instrumentation and control; etc.

Internet of Things (IoT): Applications of the IoT; Authentication and access control in IoT; Channel and traffic models; Circuit and system design for secure smart objects in the IoT; Circuit and system design for smart objects in the IoT; Communication systems and network architectures for the IoT; Computation, storage, and network virtualization in Mobile Cloud Computing (MCC); Emerging IoT business models and process changes; Energy efficient designs of architecture and device in IoT; Ethics and legal considerations in IoT; Experience reports from the introduction and operation of networked things in areas such as healthcare, logistics & transport; Green by IoT/Green of IoT Technology; Identification and biometrics in IoT; IoT access network technologies and capillary networks; IoT architectures and system such as things-centric, data-centric, service-centric architecture, CPS and SCADA platforms, future Internet design for IoT, cloud-based IoT, and system security and manageability; IoT enabling technologies such as sensors, radio frequency identification, low power and energy harvesting, sensor networks, machine-type communication, resource-constrained networks, real-time systems, IoT data analytics, in situ processing, and embedded software; IoT networking and communication, infrastructure and security; IoT protocols; IoT secure access network technologies and capillary networks; IoT secure network infrastructure; IoT security protocols; IoT services, applications, standards, and test-beds such as streaming data management and mining platforms, service middleware, open service platform, semantic service management, security and privacy-preserving protocols, design examples of smart services and applications, and IoT application support; Liability and policy enforcement in IoT; Methods for IoT security analysis and audit; Methods for secure by design IoT; Modeling, analysis, and optimization of MCC and IoT; Novel architecture designs and evaluations of MCC and IoT; Novel mobile cloud applications and services for IoT; Privacy and anonymization techniques in IoT; Privacy in applications of the IoT; Quality of Service (QoS) of MCC and IoT; Secure cloud of things; Secure spectrum management for M2M/IoT radio communications; Security of Big data in IoT; Security, privacy, and reliability issues of MCC and IoT; Spectrum management for M2M/IoT radio communications; Trends and challenges of MCC and IoT; etc.

Section Policies

Peer Review Process

Submitted papers are evaluated by anonymous referees by single blind peer review for contribution, originality, relevance, and presentation. The Editor shall inform you of the results of the review as soon as possible, hopefully in 10 weeks. Please notice that because of the great number of submissions that TELKOMNIKA has received during the last few months the duration of the review process can be up to 14 weeks.

Open Access Policy

This journal adhere to the best practice and high publishing standards and comply with the following conditions:

1. Provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge;
2. Allows the author to hold the copyright and to retain publishing right without restrictions;
3. Deposits content with a long term digital preservation or archiving program;
4. Uses DOIs as permanent identifiers;
5. Embeds machine-readable CC licensing information in articles;
6. Allows generous reuse and mixing of content, in accordance with CC BY-SA license;
7. Can Provide Provide article level metadata for any indexers and aggregators
8. Has a deposit policy registered wíth a deposit policy registry, e.g. Sherpa/Romeo.

Archiving

This journal utilizes the LOCKSS system to create a distributed archiving system among participating libraries and permits those libraries to create permanent archives of the journal for purposes of preservation and restoration. More...

Publication Ethics and Publication Malpractice Statement

Article acceptance requirements

The criteria for an article to be accepted for publication include:

1. The article should be original writing that enhances the existing body of knowledge in the given subject area. Original review articles and surveys are acceptable, even if new data/concepts are not presented.
2. Results reported have not been submitted or published elsewhere (although expanded versions of conference publications are eligible for submission).
3. Experiments, statistics, and other analyses are performed to a high technical standard and are described in sufficient detail.
4. Conclusions are presented in an appropriate fashion and are supported by the data.
5. The article is presented in an intelligible fashion and is written in Standard English.
6. Appropriate references to related prior published works must be included.

Checklist for preparing your paper for publication

You can use this list to carry out a final check of your submission before you send it to the journal for review.

1. Is your manuscript adhere to the minimum standards? (written in English; the length of submitted paper is at least 4 pages and no more than 16 pages; use of a tool such as EndNote, Mendeley, or Zotero  for reference management and formatting, and choose IEEE style) 
2. Is your manuscript written in TELKOMNIKA format?  At this stage, it is essential that you follow every detail of the TELKOMNIKA format. Please try to follow the format as closely as possible.
3. is your title adequate and is your abstract correctly written? The title of paper is max 10 words, without Acronym or abbreviation. The Abstract (MAX 200 WORDS) should be informative and completely self-explanatory (no citation in abstract), provide a clear statement of the problem, the proposed approach or solution, and point out major findings and conclusions.
4. Authors are suggested to present their articles in the sections structure: Introduction - The Proposed Method/Algorithm/Procedure specifically designed (optional) - Research Method - Results and Discussion – Conclusion. Authors may present complex proofs of theorems or non-obvious proofs of correctness of algorithms after introduction section (obvious theorems & straightforward proofs of existing theorems are NOT needed).
5. Introduction section: explain the context of the study and state the precise objective. An Introduction should contain the following three parts:
   - Background: Authors have to make clear what the context is. Ideally, authors should give an idea of the state-of-the art of the field the report is about.
   - The Problem: If there was no problem, there would be no reason for writing a manuscript, and definitely no reason for reading it. So, please tell readers why they should proceed reading. Experience shows that for this part a few lines are often sufficient.
   - The Proposed Solution: Now and only now! - authors may outline the contribution of the manuscript. Here authors have to make sure readers point out what are the novel aspects of authors work.
   Authors should place the paper in proper context by citing relevant papers. At least, 10 references (recently journal articles) are used in this section.
6. Method section: the presentation of the experimental methods should be clear and complete in every detail facilitating reproducibility by other scientists.
7. Results and discussion section: The presentation of results should be simple and straightforward in style. This section report the most important findings, including results of statistical analyses as apropriate and comparisons to other research results. Results given in figures should not be repeated in tables. This is where the author(s) should explain in words what he/she/they discovered in the research. It should be clearly laid out and in a logical sequence. This section should be supported suitable references.
8. Conclusion section: Summarize sentences the primary outcomes of the study in a paragraph. Are the claims in this section supported by the results, do they seem reasonable? Have the authors indicated how the results relate to expectations and to earlier research? Does the article support or contradict previous theories? Does the conclusion explain how the research has moved the body of scientific knowledge forward?
9. Language. If an article is poorly written due to grammatical errors, while it may make it more difficult to understand the science.
10. Please be sure that the manuscript is up to date. It is expected that 20 to 30%  of references are to recent papers.
11. Is the manuscript clearly written?  Is the article exciting? Does the content flow well from one section to another? Please try to keep your manuscript on the proper level.  It should be easy to understand by well qualified professionals, but at the same time please avoid describing well known facts (use proper references instead). Often manuscripts receive negative reviews because reviewers are not able to understand the manuscript and this is authors' (not reviewers') fault.  Notice, that if reviewers have difficulties, then other readers will face the same problem and there is no reason to publish the manuscript.
12. Do you have enough references?  We will usually expect a minimum of 25 to 30 references primarily to journal papers, depending on the length of the paper. Citations of textbooks should be used very rarely and citations to web pages should be avoided. All cited papers should be referenced within the text of the manuscript.
13. Figures and Tables. Relation of Tables or Figures and Text: Because tables and figures supplement the text, all tables and figures should be referenced in the text. Avoid placing figures and tables before their first mention in the text. Authors also must explain what the reader should look for when using the table or figure. Focus only on the important point the reader should draw from them, and leave the details for the reader to examine on her own.
    Figures:
    a.    All figures appearing in article must be numbered in the order that they appear in the text.
    b.    Each figure must have a caption fully explaining the content
    c.    Figure captions are presented as a paragraph starting with the figure number i.e. Figure 1, Figure 2, etc.
    d.    Figure captions appear below the figure
    e.    Each figure must be fully cited if taken from another article
    f.    all figures must be referred to in the body of the article
    Tables:
    a.    Material that is tabular in nature must appear in a numbered captioned table.
    b.    All tables appearing in article must be numbered in the order that they appear in the text.
    c.    Each table must have a caption fully explaining the content with the table number  i.e. Table 1, Table 2, etc.
    d.    Each column must have a clear and concise heading
    e.    Tables are to be presented with single horizontal line under: the table caption, the column headings and at the end of the table.
    f.    All tables must be referred to in the body of the article
    g.    Each table must be fully cited if taken from another article
14. Each citation should be written in the order of appearance in the text in square brackets. For example, the first citation [1], the second citation [2], and the third and fourth citations [3,4]. When citing multiple sources at once, the preferred method is to list each number separately, in its own brackets, using a comma or dash between numbers, as such: [1], [3], [5] or [4-8]. It is not necessary to mention an author's name, pages used, or date of publication in the in-text citation. Instead, refer to the source with a number in a square bracket, e.g. [9], that will then correspond to the full citation in your reference list. Examples of in-text citations:
    
    • This theory was first put forward in 1970 [9].
    • Sutikno [10] has argued that...
    • Several recent studies [7], [9], [11-15] have suggested that....
    • ...end of the line for my research [16].
15. Self-citations: to control for citation manipulation (COPE, 2019), this journal asks that authors keep self-citation to a minimum. We would strongly recommend no more than 5 (including jointly authored publications), or 20% self-citations, whichever number is lower.
16. Please be aware that for the final submission of regular paper you will be asked to tailor your paper so the last page is not half empty.

Authorship

Authorship provides credit for a researcher's contributions to a study and carries accountability. 

TELKOMNIKA considers individuals who meet all of the following criteria to be authors:

• Made a significant intellectual contribution to the theoretical development, system or experimental design, prototype development, and/or the analysis and interpretation of data associated with the work contained in the article.
• Contributed to drafting the article or reviewing and/or revising it for intellectual content.
• Approved the final version of the article as accepted for publication, including references.

Each author has approved the submitted version (and any substantially modified version that involves the author's contribution to the study).

Each author has agreed both to be personally accountable for the author's own contributions and to ensure that questions related to the accuracy or integrity of any part of the work, even ones in which the author was not personally involved, are appropriately investigated, resolved, and the resolution documented in the literature.

TELKOMNIKA does not require all authors of a research paper to sign the letter of submission, nor do they impose an order on the list of authors. Submission to TELKOMNIKA is taken to mean that all the listed authors have agreed all of the contents, including the author list and author contribution statements. The corresponding author is responsible for having ensured that this agreement has been reached that all authors have agreed to be so listed,and have approved the manuscript submission to the journal, and for managing all communication between the journal and all co-authors, before and after publication. The corresponding author is also responsible for submitting a competing interests' statement on behalf of all authors of the paper.

It is expected that the corresponding author (and on multi-group collaborations, at least one member of each collaborating group, usually the most senior member of each submitting group or team, who accepts responsibility for the contributions to the manuscript from that team) will be responsible forthe following with respect to data, code and materials:

• ensuring that data, materials, and code comply with transparency and reproducibility standards of the field and journal;
• ensuring that original data/materials/code upon which the submission is based are preserved following best practices in the field so that they are retrievable for reanalysis;
• confirming that data/materials/code presentation accurately reflects the original;
• foreseeing and minimizing obstacles to the sharing of data/materials/code described in the work
• ensuring that all authors (or group leaders in multi-lab collaborations) have certified the author list and author contributions

Author lists should be carefully considered before submission. At submission, the corresponding author must include written permission from the authors of the work concerned for mention of any unpublished material cited in the manuscript (for example others' data, in press manuscripts, personal communications or work in preparation). The corresponding author also must clearly identify at submission any material within the manuscript (such as figures) that has been published previously elsewhere and provide written permission from authors of the prior work and/or publishers, as appropriate, for the re-use of such material.

After acceptance, the corresponding author is responsible for the accuracy of all content in the proof, including the names of coauthors, addresses and affiliations. Changes to author list post acceptance are not allowed.

After publication, the corresponding author is the point of contact for queries about the published paper. It is their responsibility to inform all co-authors of any matters arising in relation to the published paper and to ensure such matters are dealt with promptly. Authors of published material have a responsibility to inform the journal immediately if they become aware of any aspects that requires correction.

Any changes to the author list after submission, such as a change in the order of the authors or the deletion or addition of authors, must be approved by every author. TELKOMNIKA editors are not in a position to investigate or adjudicate authorship disputes before or after publication. Such disagreements, if they cannot be resolved amongst authors, should be directed to the relevant institutional authority.

The primary affiliation for each author should be the institution where the majority of their work was done. If an author has subsequently moved, the current address may also be stated.

Withdrawal of Manuscripts

Author is not allowed to withdraw submitted manuscripts, because the withdrawal is a waste of valuable resources that editors and referees spent a great deal of time processing submitted manuscripts, money and works invested by the publisher.
If the author still requests withdrawal of his/her manuscript when the manuscript is still in the peer-reviewing process, the author will be punished with paying $200 per manuscript, as withdrawal penalty to the publisher. However, it is unethical to withdraw a submitted manuscript from one journal if accepted by another journal. The withdrawal of manuscript after the manuscript is accepted for publication, the author will be punished by paying US$500 per manuscript. Withdrawal of an accepted manuscript is only allowed after withdrawal penalty has been fully paid to the Publisher. If the author doesn't agree to pay the penalty, the author and his/her affiliation will be blacklisted for publication in this journal in future. Even his/her previously published articles will be removed from our online system.

Retraction and Correction policies

Withdrawing an already published paper is called a Retraction. A published article is a scientific record and we cannot make any changes without publishing a corrigendum. Universitas Ahmad Dahlan (UAD) takes its responsibility to maintain the integrity and completeness of the scholarly record of our content for all end users very seriously. Changes to articles after they have been published online may only be made under the circumstances outlined below. UAD places great importance on the authority of articles after they have been published and our policy is based on best practice in the academic publishing community. An Erratum is a statement by the authors of the original paper that briefly describes any correction(s) resulting from errors or omissions. Any effects on the conclusions of the paper should be noted. The corrected article is not removed from the online journal, but notice of erratum is given. The Erratum is made freely available to all readers and is linked to the corrected article. A Retraction is a notice that the paper should not be regarded as part of the scientific literature. Retractions are issued if there is clear evidence that the findings are unreliable, this can be as a result of misconduct or honest error; if the findings have previously been published elsewhere without proper referencing, permission or justification; if the work is plagiarized; or if the work reports unethical research. To protect the integrity of the record, the retracted article is not removed from the online journal, but notice of retraction is given, is made freely available to all readers, and is linked to the retracted article. Retractions can be published by the authors when they have discovered substantial scientific errors; in other cases, the Editors or Publisher may conclude that retraction is appropriate. In all cases, the retraction indicates the reason for the action and who is responsible for the decision. If a retraction is made without the unanimous agreement of the authors, that is also noted. In rare and extreme cases involving legal infringement, the Publisher may redact or remove an article. Bibliographic information about the article will be retained to ensure the integrity of the scientific record. A Publisher’s Note notifies readers that an article has been corrected subsequent to publication. It is issued by the Publisher and is used in cases where typographical or production errors (which are the fault of the Publisher) affect the integrity of the article metadata (such as title, author list or byline) or will significantly impact the readers' ability to comprehend the article. The original article is removed and replaced with a corrected version. Publisher’s Notes are freely available to all readers. Minor errors that do not affect the integrity of the metadata or a reader's ability to understand an article and that do not involve a scientific error or omission will be corrected at the discretion of the Publisher. In such a case, the original article is removed and replaced with a corrected version. The date the correction is made is noted on the corrected article. Authors should also be aware that an original article can only be removed and replaced with a corrected version less than one year after the original publication date. Corrections to an article which has a publication date that is older than one year will only be documented by a Publisher’s Note. The following guideline may also be helpful: COPE Guidelines for Retracting Articles

TELKOMNIKA Profile in Scimago and Google Scholar

SCImago Journal & Country Rank

TELKOMNIKA Telecommunication, Computing, Electronics and Control - Google Scholar Citations

TELKOMNIKA Telecommunication, Computing, Electronics and Control
ISSN: 1693-6930, e-ISSN: 2302-9293
Universitas Ahmad Dahlan, 4th Campus
Jl. Ringroad Selatan, Kragilan, Tamanan, Banguntapan, Bantul, Yogyakarta, Indonesia 55191
Phone: +62 (274) 563515, 511830, 379418, 371120
Fax: +62 274 564604