Acceptance of a website is determined by various factors, one of the most important is the organization that allows users to access to functions, resources and information that it contains. This work consisted of a study of comparative usability between a website designed using principles of linguistics and design of ontologies and other using a strategy of a commercial product. A plan was designed and applied to evaluate the following aspects of website: ease of use, efficiency to access its information, efficacy to perform tasks and user satisfaction. Heuristic and user tests were used as diagnostic tools in usability evaluations, and an observation guide was made by an external evaluator as a complement to previous tests. The results clearly shown that is better use the proposed website design methodology. This allows to create site more structured, functional and with greater ease of access to resources that it contain.
Today, Web site design is used to make sites useful to users, with accessible functions, resources and information. Therefore, that design involves use of methodologies that allow an adequate structuring of them resources and organization, permitting users to access them quickly, easily and intuitively. This research consisted of a usability study oriented to website structure designers using a methodology based on concepts of ontology design. This study includes a planning to evaluate the design and the structure of website in aspects such as: ease of use, efficient access to information and performance on the tasks focused to total satisfaction of end user. Heuristic tests were used as diagnostic tools to evaluate usability of website design structures; these were supported by a heuristic evaluation guide and in the Sirius methodology[3]. The results obtained from them, allowed us to detect opportunities for improvement and optimization in website design, and in refining the Web interface oriented to end users.
A METHOD FOR WEBSITE USABILITY EVALUATION: A COMPARATIVE ANALYSISIJwest
ABSTRACT
Graphical user interfaces design in software development process focuses on maximizing usability and the user's experience, in order to make the interaction for users easy, flexible and efficient. In this paper, we propose an approach for evaluating the usability satisfaction degree of a web-based system. The proposed method has been accomplished in two phases and implemented on an airlines website as a case study. In the first phase, a website usability test is implemented by a number of users, and then the results obtained are translated into charts for a final web-based system evaluation in the second phase. The results achieved
were satisfactory, since the places where the weaknesses and gaps in the website are identified and recommended solutions to avoid them are drawn. The authenticity of the results have been confirmed by comparing them with user opinions acquired from a questionnaire, which proves the precision in which the website is rated.
Evaluation of E-Learning Web Sites Using Fuzzy Axiomatic Design Based ApproachGurdal Ertek
High quality web site has been generally recognized as a critical enabler to conduct online business. Numerous studies exist in the literature to measure the business performance in relation to web site quality. In this paper, an axiomatic design based approach for fuzzy group decision making is adopted to evaluate the quality of e-learning web sites. Another multi-criteria decision making technique, namely fuzzy TOPSIS, is
applied in order to validate the outcome. The methodology proposed in this paper has the advantage of incorporating requirements and enabling reductions in the problem size, as compared to fuzzy TOPSIS. A case study focusing on Turkish e-learning websites is presented, and based on the empirical findings, managerial implications and recommendations
for future research are offered.
http://research.sabanciuniv.edu.
The paper has been presented with a system that is
created on the android platform targeting the students studying in
an engineering institute. The application is created for effortless
day to day official work in an institute. Students will be served
with the benefits like compilation of branch wise question papers,
general aptitude questions, video lectures, newspapers, with
some interesting features like parent-teacher portal, feedback
system and ask your queries block. The application is designed
using core java coding, layout is fabricated with xml extension,
complete creation is done on android studio. Login authentication
is developed via Firebase Auth, newspapers have been linked
through their URL, video lectures are engrossed with API and
a separate website is created for parent-teacher interaction.
Based on the above mentioned ideology, We are fabricating an
application using android design studio kit which is majorly
concerned for the effortless access of all the essentials required
in an institute.
E-Consult: Designing of Development for Thesis Advisory Model Based on Manage...Supriadi Fadel
Artikel dengan Judul "E-Consult: Designing of Development for Thesis Advisory Model Based on Management Information System in IAIN Bukittinggi" Merupakan proseding yang diterbitkan pada 1st International Conference on Innovation in Education (ICIE) tanggal 6 - 7 September 2018 dengan alamat akses: https://www.atlantis-press.com/proceedings/icoie-18/55912880
Today, Web site design is used to make sites useful to users, with accessible functions, resources and information. Therefore, that design involves use of methodologies that allow an adequate structuring of them resources and organization, permitting users to access them quickly, easily and intuitively. This research consisted of a usability study oriented to website structure designers using a methodology based on concepts of ontology design. This study includes a planning to evaluate the design and the structure of website in aspects such as: ease of use, efficient access to information and performance on the tasks focused to total satisfaction of end user. Heuristic tests were used as diagnostic tools to evaluate usability of website design structures; these were supported by a heuristic evaluation guide and in the Sirius methodology[3]. The results obtained from them, allowed us to detect opportunities for improvement and optimization in website design, and in refining the Web interface oriented to end users.
A METHOD FOR WEBSITE USABILITY EVALUATION: A COMPARATIVE ANALYSISIJwest
ABSTRACT
Graphical user interfaces design in software development process focuses on maximizing usability and the user's experience, in order to make the interaction for users easy, flexible and efficient. In this paper, we propose an approach for evaluating the usability satisfaction degree of a web-based system. The proposed method has been accomplished in two phases and implemented on an airlines website as a case study. In the first phase, a website usability test is implemented by a number of users, and then the results obtained are translated into charts for a final web-based system evaluation in the second phase. The results achieved
were satisfactory, since the places where the weaknesses and gaps in the website are identified and recommended solutions to avoid them are drawn. The authenticity of the results have been confirmed by comparing them with user opinions acquired from a questionnaire, which proves the precision in which the website is rated.
Evaluation of E-Learning Web Sites Using Fuzzy Axiomatic Design Based ApproachGurdal Ertek
High quality web site has been generally recognized as a critical enabler to conduct online business. Numerous studies exist in the literature to measure the business performance in relation to web site quality. In this paper, an axiomatic design based approach for fuzzy group decision making is adopted to evaluate the quality of e-learning web sites. Another multi-criteria decision making technique, namely fuzzy TOPSIS, is
applied in order to validate the outcome. The methodology proposed in this paper has the advantage of incorporating requirements and enabling reductions in the problem size, as compared to fuzzy TOPSIS. A case study focusing on Turkish e-learning websites is presented, and based on the empirical findings, managerial implications and recommendations
for future research are offered.
http://research.sabanciuniv.edu.
The paper has been presented with a system that is
created on the android platform targeting the students studying in
an engineering institute. The application is created for effortless
day to day official work in an institute. Students will be served
with the benefits like compilation of branch wise question papers,
general aptitude questions, video lectures, newspapers, with
some interesting features like parent-teacher portal, feedback
system and ask your queries block. The application is designed
using core java coding, layout is fabricated with xml extension,
complete creation is done on android studio. Login authentication
is developed via Firebase Auth, newspapers have been linked
through their URL, video lectures are engrossed with API and
a separate website is created for parent-teacher interaction.
Based on the above mentioned ideology, We are fabricating an
application using android design studio kit which is majorly
concerned for the effortless access of all the essentials required
in an institute.
E-Consult: Designing of Development for Thesis Advisory Model Based on Manage...Supriadi Fadel
Artikel dengan Judul "E-Consult: Designing of Development for Thesis Advisory Model Based on Management Information System in IAIN Bukittinggi" Merupakan proseding yang diterbitkan pada 1st International Conference on Innovation in Education (ICIE) tanggal 6 - 7 September 2018 dengan alamat akses: https://www.atlantis-press.com/proceedings/icoie-18/55912880
Nowadays, computers and internet are playing the major role in the development of business and different aspects of human lives; hence, the quality of user-computer interface became an important issue. User interface (UI) can become an Achilles heel in a well-functioning system; due to the fact that most users judge the quality of a product by its usability. The UI layout design improves the usability of a product and accordingly may determine its success; so, due to this and more, the need of an objective way of evaluation of UI has arisen. This paper discusses various UI usability evaluation techniques and shows the recent developments in this field.
THE USABILITY METRICS FOR USER EXPERIENCE was innovatively created by Google engineers and it is ready for production in record time. The success of Google is to attributed the efficient search algorithm, and also to the underlying commodity hardware. As Google run number of application then Google’s goal became to build a vast storage network out of inexpensive commodity hardware. So Google create its own file system, named as THE USABILITY METRICS FOR USER EXPERIENCE that is GFS. THE USABILITY METRICS FOR USER EXPERIENCE is one of the largest file system in operation. Generally THE USABILITY METRICS FOR USER EXPERIENCE is a scalable distributed file system of large distributed data intensive apps. In the design phase of THE USABILITY METRICS FOR USER EXPERIENCE, in which the given stress includes component failures , files are huge and files are mutated by appending data. The entire file system is organized hierarchically in directories and identified by pathnames. The architecture comprises of multiple chunk servers, multiple clients and a single master. Files are divided into chunks, and that is the key design parameter. THE USABILITY METRICS FOR USER EXPERIENCE also uses leases and mutation order in their design to achieve atomicity and consistency. As of there fault tolerance, THE USABILITY METRICS FOR USER EXPERIENCE is highly available, replicas of chunk servers and master exists.
Generating a Domain Specific Inspection Evaluation Method through an Adaptive...Waqas Tariq
The growth of the Internet and related technologies has enabled the development of a new breed of dynamic websites and applications that are growing rapidly in use and that have had a great impact on many businesses. These websites need to be continuously evaluated and monitored to measure their efficiency and effectiveness, to assess user satisfaction, and ultimately to improve their quality. Nearly all the studies have used Heuristic Evaluation (HE) and User Testing (UT) methodologies, which have become the accepted methods for the usability evaluation of User Interface Design (UID); however, the former is general, and unlikely to encompass all usability attributes for all website domains. The latter is expensive, time consuming and misses consistency problems. To address this need, new evaluation method is developed using traditional evaluations (HE and UT) in novel ways.
The lack of a methodological framework that can be used to generate a domain-specific evaluation method, which can then be used to improve the usability assessment process for a product in any chosen domain, represents a missing area in usability testing. This paper proposes an adapting framework and evaluates it by generating an evaluation method for assessing and improving the usability of a product, called Domain Specific Inspection (DSI), and then analysing it empirically by applying it on the educational domain. Our experiments show that the adaptive framework is able to build a formative and summative evaluation method that provides optimal results with regard to the identification of comprehensive usability problem areas and relevant usability evaluation method (UEM) metrics, with minimum input in terms of the cost and time usually spent on employing UEMs.
Principles of Health Informatics: Evaluating medical softwareMartin Chapman
Principles of Health Informatics: Evaluating medical software. Last delivered in 2023. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
THE USABILITY METRICS FOR USER EXPERIENCEvivatechijri
THE USABILITY METRICS FOR USER EXPERIENCE was innovatively created by Google engineers and it is ready for production in record time. The success of Google is to attributed the efficient search algorithm, and also to the underlying commodity hardware. As Google run number of application then Google’s goal became to build a vast storage network out of inexpensive commodity hardware. So Google create its own file system, named as THE USABILITY METRICS FOR USER EXPERIENCE that is GFS. THE USABILITY METRICS FOR USER EXPERIENCE is one of the largest file system in operation. Generally THE USABILITY METRICS FOR USER EXPERIENCE is a scalable distributed file system of large distributed data intensive apps. In the design phase of THE USABILITY METRICS FOR USER EXPERIENCE, in which the given stress includes component failures , files are huge and files are mutated by appending data. The entire file system is organized hierarchically in directories and identified by pathnames. The architecture comprises of multiple chunk servers, multiple clients and a single master. Files are divided into chunks, and that is the key design parameter. THE USABILITY METRICS FOR USER EXPERIENCE also uses leases and mutation order in their design to achieve atomicity and consistency. As of there fault tolerance, THE USABILITY METRICS FOR USER EXPERIENCE is highly available, replicas of chunk servers and master exists.
This paper is about usability of technology available in our lives. How easy it is to use the instruments available to us, how easily are we able to do tasks by using the gadgets available to us. It discusses the benefits of usability and discusses how to improve usability. This paper also has comparisons of the websites of two technology giants, Apple and Samsung. It discusses about each and every aspect of their sites and provides reviews about the ease of usability and the user experience. This paper also discusses the ways to make web more usable and the tools to make it more user friendly and easy to use.
USEFul: A Framework to Mainstream Web Site Usability through Automated Evalua...Waqas Tariq
A paradox has been observed whereby web site usability is proven to be an essential element in a web site, yet at the same time there exist an abundance of web pages with poor usability. This discrepancy is the result of limitations that are currently preventing web developers in the commercial sector from producing usable web sites. In this paper we propose a framework whose objective is to alleviate this problem by automating certain aspects of the usability evaluation process. Mainstreaming comes as a result of automation, therefore enabling a non-expert in the field of usability to conduct the evaluation. This results in reducing the costs associated with such evaluation. Additionally, the framework allows the flexibility of adding, modifying or deleting guidelines without altering the code that references them since the guidelines and the code are two separate components. A comparison of the evaluation results carried out using the framework against published evaluations of web sites carried out by web site usability professionals reveals that the framework is able to automatically identify the majority of usability violations. Due to the consistency with which it evaluates, it identified additional guideline-related violations that were not identified by the human evaluators.
Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that evaluates the simplicity of using a system, software, or interface design for performing particular tasks. Evaluation is a process by which designers gather information about a systems usability to improve its user interfaces features. This research presents a study of a usability evaluation of EduGate, an online academic portal of King Saud University. In this research the heuristic evaluation method was chosen to evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability problem and some recommendations were proposed to enhance the usability of the EduGate. A questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these recommendations. The participants supported 80% of the proposed recommendations to improve the usability of the EduGate.
A HEURISTIC-BASED APPROACH FOR USABILITY EVALUATION OF ACADEMIC PORTALSijcsit
Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that evaluates the simplicity of using a system, software, or interface design for performing particular tasks. Evaluation is a process by which designers gather information about a systems usability to improve its user interfaces features. This research presents a study of a usability evaluation of EduGate, an online academic portal of King Saud University. In this research the heuristic evaluation method was chosen to evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability problem and some recommendations were proposed to enhance the usability of the EduGate. A questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these recommendations. The participants supported 80% of the proposed recommendations to improve the usability of the EduGate.
Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that
evaluates the simplicity of using a system, software, or interface design for performing particular tasks.
Evaluation is a process by which designers gather information about a systems usability to improve its user
interfaces features. This research presents a study of a usability evaluation of EduGate, an online
academic portal of King Saud University. In this research the heuristic evaluation method was chosen to
evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability
problem and some recommendations were proposed to enhance the usability of the EduGate. A
questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these
recommendations. The participants supported 80% of the proposed recommendations to improve the
usability of the EduGate.
User Experience Evaluation for Automation Tools: An Industrial ExperienceIJCI JOURNAL
Evaluating the User Experience in some contexts is challenging, especially in automation applications, due to specific situations and requirements. This paper presents an experience of applying the UX evaluation method for an automation tool in the Android software industry to assist software engineers in identifying the UX problems faced by users. The work applies heuristic evaluation, survey, and user interview methods to find the UX problems, understand the respective reasons, validate the given information, and finally assess the UX. The evaluation identified critical problems related to error messages, system response to errors, and proper feedback about what software is doing. The found problems and discussions contributed to developing new UX evaluation methodologies.
Interface on Usability Testing Indonesia Official Tourism WebsiteWaqas Tariq
Ministry of Tourism and Creative Economy of The Republic of Indonesia must meet the wide audience various needs and should reach people from all levels of society around the world to provide Indonesia tourism and travel information. This article will gives the details in the evolution of one important component of Indonesia Official Tourism Website as it has grown in functionality and usefulness over several years of use by a live, unrestricted community. We chose this website to see the website interface design and usability and to popularize Indonesia tourism and travel highlights. The analysis done by looking at the criteria specified for usability testing. Usability testing measures are the ease of use (effectiveness, efficiency, consistency and interface design), easy to learn, errors and syntax which is related to the human computer interaction. The purpose of this article is to test the usability level of the website, analyze the website interface design, and provide suggestions for improvements in Indonesia Official Tourism Website of analysis we have done before.
User Perceptions to the Quality of Apemkislamets Learning Application Managem...Argo Ciptono
This paper is aim to know specify the service
attributes which should be improved or developed in
Apemkislamets application. The approach used is WebQual.
WebQual is a quality measurement approach for websites or
applications through user perceptions based on three dimensions:
Usability, information quality and services interaction quality.
The population in this study is Apilikasi Apemkislamets users
with the number of samples taken as much as 321 respondents by
convinience sampling. The research method used is survey with
questionnaire based on WebQual 4.0 that analyzed with IPA
(Importance Performance Analysis) to know the level of user
satisfaction which is gap between importance and performance.
The results of validity and reliability test show the whole item
questionnaire valid and reliable. The results showed that 18 items
analyzed by IPA method were grouped into Quadrant I (1 item),
Quadrant II (5 items), Quadrant III (9 items) and Quadrant IV
(3 items). Items that are considered important and need to be
located lies in the first quadrant is Design in accordance with the
type of application of Learning Administration. The result of
double correlation analysis also shows a strong correlation
between independent variable and dependent in this research.
In order to study the WGS on an industrial scale at a low pressure, the modeling andsimulation of a WGS reactor operating at a pressure close to Patm and processing an industrial charge in the presence of a high temperature shift catalyst (Fe2O3/Cr2O3) were performed. The Profiles of the carbon monoxide conversion, temperature and pressure along the reactor were obtained. The effect of several operating parameters (inlet temperature, H2O/CO ratio) on the conversion of carbon monoxide along the reactor has been determined. The estimated catalytic mass to convert 60.5% of the carbon monoxide contained in the inlet is 170.76 t. The pressure drops in the reactor are not negligible and the maximum temperaturereached is without any harmful effect on the catalyst. The choice of an optimal inlet temperature and a high H2O/CO ratio improves the conversion of carbon monoxide.
As we are all aware,therecent discovery of the Higgs boson has revealed a highly massive particle, the value of which lies between 125and 126.5 GeV/c2.. According to the basic concepts of Quantum Mechanics, and in full compliance with the Uncertainty Principle and Yukawa intuitions, we were able to calculate the maximum limit of the Higgs boson‟s field of action. From the calculations show that the Higgs boson presents a range of action really very small, namely 9.8828∙10-16[cm], that is slightly smaller than 10-15[cm]. This value is justified by the considerable mass that the Higgs bosonacquires, in perfect agreement with the Uncertainty Principle.
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Nowadays, computers and internet are playing the major role in the development of business and different aspects of human lives; hence, the quality of user-computer interface became an important issue. User interface (UI) can become an Achilles heel in a well-functioning system; due to the fact that most users judge the quality of a product by its usability. The UI layout design improves the usability of a product and accordingly may determine its success; so, due to this and more, the need of an objective way of evaluation of UI has arisen. This paper discusses various UI usability evaluation techniques and shows the recent developments in this field.
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Generating a Domain Specific Inspection Evaluation Method through an Adaptive...Waqas Tariq
The growth of the Internet and related technologies has enabled the development of a new breed of dynamic websites and applications that are growing rapidly in use and that have had a great impact on many businesses. These websites need to be continuously evaluated and monitored to measure their efficiency and effectiveness, to assess user satisfaction, and ultimately to improve their quality. Nearly all the studies have used Heuristic Evaluation (HE) and User Testing (UT) methodologies, which have become the accepted methods for the usability evaluation of User Interface Design (UID); however, the former is general, and unlikely to encompass all usability attributes for all website domains. The latter is expensive, time consuming and misses consistency problems. To address this need, new evaluation method is developed using traditional evaluations (HE and UT) in novel ways.
The lack of a methodological framework that can be used to generate a domain-specific evaluation method, which can then be used to improve the usability assessment process for a product in any chosen domain, represents a missing area in usability testing. This paper proposes an adapting framework and evaluates it by generating an evaluation method for assessing and improving the usability of a product, called Domain Specific Inspection (DSI), and then analysing it empirically by applying it on the educational domain. Our experiments show that the adaptive framework is able to build a formative and summative evaluation method that provides optimal results with regard to the identification of comprehensive usability problem areas and relevant usability evaluation method (UEM) metrics, with minimum input in terms of the cost and time usually spent on employing UEMs.
Principles of Health Informatics: Evaluating medical softwareMartin Chapman
Principles of Health Informatics: Evaluating medical software. Last delivered in 2023. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
THE USABILITY METRICS FOR USER EXPERIENCEvivatechijri
THE USABILITY METRICS FOR USER EXPERIENCE was innovatively created by Google engineers and it is ready for production in record time. The success of Google is to attributed the efficient search algorithm, and also to the underlying commodity hardware. As Google run number of application then Google’s goal became to build a vast storage network out of inexpensive commodity hardware. So Google create its own file system, named as THE USABILITY METRICS FOR USER EXPERIENCE that is GFS. THE USABILITY METRICS FOR USER EXPERIENCE is one of the largest file system in operation. Generally THE USABILITY METRICS FOR USER EXPERIENCE is a scalable distributed file system of large distributed data intensive apps. In the design phase of THE USABILITY METRICS FOR USER EXPERIENCE, in which the given stress includes component failures , files are huge and files are mutated by appending data. The entire file system is organized hierarchically in directories and identified by pathnames. The architecture comprises of multiple chunk servers, multiple clients and a single master. Files are divided into chunks, and that is the key design parameter. THE USABILITY METRICS FOR USER EXPERIENCE also uses leases and mutation order in their design to achieve atomicity and consistency. As of there fault tolerance, THE USABILITY METRICS FOR USER EXPERIENCE is highly available, replicas of chunk servers and master exists.
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USEFul: A Framework to Mainstream Web Site Usability through Automated Evalua...Waqas Tariq
A paradox has been observed whereby web site usability is proven to be an essential element in a web site, yet at the same time there exist an abundance of web pages with poor usability. This discrepancy is the result of limitations that are currently preventing web developers in the commercial sector from producing usable web sites. In this paper we propose a framework whose objective is to alleviate this problem by automating certain aspects of the usability evaluation process. Mainstreaming comes as a result of automation, therefore enabling a non-expert in the field of usability to conduct the evaluation. This results in reducing the costs associated with such evaluation. Additionally, the framework allows the flexibility of adding, modifying or deleting guidelines without altering the code that references them since the guidelines and the code are two separate components. A comparison of the evaluation results carried out using the framework against published evaluations of web sites carried out by web site usability professionals reveals that the framework is able to automatically identify the majority of usability violations. Due to the consistency with which it evaluates, it identified additional guideline-related violations that were not identified by the human evaluators.
Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that evaluates the simplicity of using a system, software, or interface design for performing particular tasks. Evaluation is a process by which designers gather information about a systems usability to improve its user interfaces features. This research presents a study of a usability evaluation of EduGate, an online academic portal of King Saud University. In this research the heuristic evaluation method was chosen to evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability problem and some recommendations were proposed to enhance the usability of the EduGate. A questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these recommendations. The participants supported 80% of the proposed recommendations to improve the usability of the EduGate.
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Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that evaluates the simplicity of using a system, software, or interface design for performing particular tasks. Evaluation is a process by which designers gather information about a systems usability to improve its user interfaces features. This research presents a study of a usability evaluation of EduGate, an online academic portal of King Saud University. In this research the heuristic evaluation method was chosen to evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability problem and some recommendations were proposed to enhance the usability of the EduGate. A questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these recommendations. The participants supported 80% of the proposed recommendations to improve the usability of the EduGate.
Human computer interaction (HCI) is concerned with the practice of usability, which is a measure that
evaluates the simplicity of using a system, software, or interface design for performing particular tasks.
Evaluation is a process by which designers gather information about a systems usability to improve its user
interfaces features. This research presents a study of a usability evaluation of EduGate, an online
academic portal of King Saud University. In this research the heuristic evaluation method was chosen to
evaluate the usability of the EduGate. Our results show that, the EduGate suffers from certain usability
problem and some recommendations were proposed to enhance the usability of the EduGate. A
questionnaire was then used to collect the feedback of real users (i.e. students) on the value of these
recommendations. The participants supported 80% of the proposed recommendations to improve the
usability of the EduGate.
User Experience Evaluation for Automation Tools: An Industrial ExperienceIJCI JOURNAL
Evaluating the User Experience in some contexts is challenging, especially in automation applications, due to specific situations and requirements. This paper presents an experience of applying the UX evaluation method for an automation tool in the Android software industry to assist software engineers in identifying the UX problems faced by users. The work applies heuristic evaluation, survey, and user interview methods to find the UX problems, understand the respective reasons, validate the given information, and finally assess the UX. The evaluation identified critical problems related to error messages, system response to errors, and proper feedback about what software is doing. The found problems and discussions contributed to developing new UX evaluation methodologies.
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Ministry of Tourism and Creative Economy of The Republic of Indonesia must meet the wide audience various needs and should reach people from all levels of society around the world to provide Indonesia tourism and travel information. This article will gives the details in the evolution of one important component of Indonesia Official Tourism Website as it has grown in functionality and usefulness over several years of use by a live, unrestricted community. We chose this website to see the website interface design and usability and to popularize Indonesia tourism and travel highlights. The analysis done by looking at the criteria specified for usability testing. Usability testing measures are the ease of use (effectiveness, efficiency, consistency and interface design), easy to learn, errors and syntax which is related to the human computer interaction. The purpose of this article is to test the usability level of the website, analyze the website interface design, and provide suggestions for improvements in Indonesia Official Tourism Website of analysis we have done before.
User Perceptions to the Quality of Apemkislamets Learning Application Managem...Argo Ciptono
This paper is aim to know specify the service
attributes which should be improved or developed in
Apemkislamets application. The approach used is WebQual.
WebQual is a quality measurement approach for websites or
applications through user perceptions based on three dimensions:
Usability, information quality and services interaction quality.
The population in this study is Apilikasi Apemkislamets users
with the number of samples taken as much as 321 respondents by
convinience sampling. The research method used is survey with
questionnaire based on WebQual 4.0 that analyzed with IPA
(Importance Performance Analysis) to know the level of user
satisfaction which is gap between importance and performance.
The results of validity and reliability test show the whole item
questionnaire valid and reliable. The results showed that 18 items
analyzed by IPA method were grouped into Quadrant I (1 item),
Quadrant II (5 items), Quadrant III (9 items) and Quadrant IV
(3 items). Items that are considered important and need to be
located lies in the first quadrant is Design in accordance with the
type of application of Learning Administration. The result of
double correlation analysis also shows a strong correlation
between independent variable and dependent in this research.
In order to study the WGS on an industrial scale at a low pressure, the modeling andsimulation of a WGS reactor operating at a pressure close to Patm and processing an industrial charge in the presence of a high temperature shift catalyst (Fe2O3/Cr2O3) were performed. The Profiles of the carbon monoxide conversion, temperature and pressure along the reactor were obtained. The effect of several operating parameters (inlet temperature, H2O/CO ratio) on the conversion of carbon monoxide along the reactor has been determined. The estimated catalytic mass to convert 60.5% of the carbon monoxide contained in the inlet is 170.76 t. The pressure drops in the reactor are not negligible and the maximum temperaturereached is without any harmful effect on the catalyst. The choice of an optimal inlet temperature and a high H2O/CO ratio improves the conversion of carbon monoxide.
As we are all aware,therecent discovery of the Higgs boson has revealed a highly massive particle, the value of which lies between 125and 126.5 GeV/c2.. According to the basic concepts of Quantum Mechanics, and in full compliance with the Uncertainty Principle and Yukawa intuitions, we were able to calculate the maximum limit of the Higgs boson‟s field of action. From the calculations show that the Higgs boson presents a range of action really very small, namely 9.8828∙10-16[cm], that is slightly smaller than 10-15[cm]. This value is justified by the considerable mass that the Higgs bosonacquires, in perfect agreement with the Uncertainty Principle.
The dependencies of total pressure, velocity, vorticity, turbulent length, turbulent dissipation, turbulent viscosity, turbulent energy and turbulent time of moving fluid from a straight pipe length of a circular cross section are presented in graphical and mathematical forms. Changing analysis of considered parameters was performed at mass flow rates of 0.45, 1.0 and 1.5 kg/s. A transition boundary of laminar flow of fluid to turbulent flow is at the distance of 2/5 of length from the inlet of the pipe (at accepted total length of the pipe of 1000 mm).
This paper considers the problem of magneto-hydrodynamics (MHD) Newtonian and non-Newtonian nano fluid flow passing on a magnetic sphere with mixed convection effect. Nano Fluid is a combination of liquid fluid as a base fluid with small solid nano particles. Water is chosen as Newtonian base fluid and oil is chosen as non-Newtonian base fluid. Then, Alumina and Copper are chosen as solid particle in nano fluid. We further construct governing equation by applying continuity equation, momentum equation, and energy equation to obtain dimensional governing equations. The dimensional governing equations that have been obtained are converted into non-dimensional governing equations by substituting non-dimensional variables. The non-dimensional governing equations are further transformed into similarity equations using stream function and solved numerically using Euler Implicit Finite Difference method. We further analyse the effect of magnetic parameter towards velocity and temperature in MHD nano fluid flow. The results show that the increases of magnetic parameter impacts to the decrease of velocity and temperature. Then, the velocity and temperature of Newtonian nano fluid are higher than the velocity and temperature of non-Newtonian nano fluid. Also, the velocity and temperature of copper-water are higher than the velocity and temperature of Alumina-water.
Building materials used for the walls of simple houses in lower-middle-class areas in Indonesia are currently dominated by brick. This study proposes that soil-paper blocks coated with calcium silicate board may be a suitable alternative, with high embodied energy and density. The research aims to obtain an optimal wall thickness to provide protection against cooling and embodied energy in low income houses, as well as against the temperature conditions in these buildings in highland and lowland areas. Determination of wall thickness is performed by simulation of a 9 m2 building model with thick variables. Cooling calculations involved the use of Archipak software. Temperature measurements were carried out using a data logger on a sample of soil-paper blocks. The results indicate that the optimal wall thickness for protection against cooling and embodied energy is 8 cm. Soil-paper block has a lower density than brick. The use of calcium silicate boards does not affect the internal temperature of a low income house, but they can be used as protection against rainwater and as a substitute for wall plastering.
Adaptive-optimal control involves re-identification of the machining process and the model obtained is used to calculate the optimal process parameters.
Optimal control characterizes the addiction of the technical and economic indicators to process parameters. Characteristic for performance technical indicators is that their dependence to parameter values of process has a limitative, what leads to one of the following conclusions, appropriately or inappropriately, and therefore can serve as restrictions in optimization problem.
Economic indicators have a continuous dependence of process parameters and therefore they are used as objective functions.
Knowledge management (KM) has become an effective way of managing organization‟s intellectual capital or, in other words, organization‟s full experience, skills and knowledge that is relevant for more effective performance in future. The paper proposes a knowledge management to achieve a competitive control of the machining systems. Then an application of Knowledge Management in engineering has been attempted to explain. The model can be used by the manager for the choosing of competitive orders.
Ceftriaxone is one of the third generations of cephalosporin antibiotics and commercially found as a sodium salt. The market demand for it is still high in recent years, including in Indonesia. However, there is no local production manufacture yet. A high yield of ceftriaxone sodium would be an advantage in industrial scale. Ceftriaxone was synthesized by reacting 7–amino–3–[(2,5–dihydro–6–hydroxy–2–methyl–5–oxo–1,2,4–triazin–3–yl) thiomethyl] cephalosporanic acid (7-ACT) with 2-Mercaptobenzothiazolyl (Z)-2-(2-Aminothiazole-4-yl)-2-Methoxyimino Acetate (MAEM) then with sodium salt in basic condition. The product was generated by solventing-out using acetone. The products were analyzed by HPLC quantitatively and the structure was confirmed using FTIR, MS and NMR. In this research, the variation in the mole ratio of reactants against the yield of product was evaluated. The result showed that the variations in mole ratio reactants affect the yield production. The higher ratio of MAEM would be the higher yield is obtained. The results show that the yield was 72,17% at mole ratio 1:2 which has 99,32% purity. This result could be a consideration in industrial production scale in ceftriaxone sodium preparation.
The challenges of river water quality management are so enormous, due to the unpredictive modes of contamination. Monitoring different sources of pollutant load contribution to the river basin is also quite tasking, resulting to laborious and expensive process which sometimes lead to analytical errors. This study deals with the assessment of the physico– chemicaland bacteriological parameters of water samples from River Amba during the period of August 2017 to January 2018 and developing regression models. Water quality Parameters such as Temperature, Turbidity (NTU), Suspended solids (mg/l), Colour, Total solids, Total dissolved solids, Electrical conductivity (μs/cm), pH, Hardness, Chemical Oxygen Demand, Dissolved Oxygen (DO), and Total Coliform were obtained and compared with water quality standards. The results of the water quality analysis of the study in comparison with drinking water quality standard issued byWorld Health Organization(WHO) and National Agency for Food and Drug Administration Control (NAFDAC) revealed that most of the water quality parameters were not adequate to pronounce the water potable. Hence adequate water treatment processes should be employed to make the water fit for consumption and other domestic uses. Statistical analysis was done, in which the systematic correlation and regressionanalysis showed a significant linear relationship between different pairs of water quality parameters. The highest correlation coefficient between different pairs of parameters obtained is (r = 0.999), resulting from the correlation between TS and SS. Multiple regression analysis was also carried out and regression equations were developed. It was observed that the parameters studied had a positive correlation with each other.
Time, in the globalized world, is one of the most important factors about the economy, science and health. Mankind has made various efforts to use time efficiently for many years. In these studies transport came to the fore and it has become indispensable. In the light of today's technological conditions, air transport is developing at an increasing rate. Every day many aircrafts are produced, which have different speeds, weight and volume, for serve to transport. Therefore to make structures for easy and safe transport need a stable soil. Particularly suitable areas for the airport grounds in cities today, not being physically proper that construction of the airport made on soil with low bearing capacity, swelling potential of an expansive soil, settlement of soil etc, areas. In this study, soil problems encountered in the construction of airports will be explained and a summary of studies on the solution of these problems will be presented.
People in a big city as Antananarivo, capital of Madagascar, have leads to take street foods for their daily nutritional needs. This food habits may be a risk for consumers due to contaminations from street environment and bad practices related to hygiene. This study aimed to examine the quality and safety of street vended foods in Antananarivo, on January 2016 to December 2017.Six hundred and sixty two samples including 126samples of melting salads, 70 beef skewers, 54 chicken skewers, and typical Malagasy foods as : mofoanana (67 samples), mofogasy (64 samples), ramanonaka (64), makasaoka (66), mofoakondro (62) and kobandravina(89);were randomly collected from the streetvendors in Antananarivo marketsto evaluate their bacteriological quality.International Methods (ISO) was adopted for to find the load of Total Aerobic Bacteria andEnterobateriaceae,Escherichia coli and to search pathogen bacteria as Salmonella, Campylobacter jejuni, Escherichia coli O157H7 and Bacillus cereus in these foods.The results revealed that the mean values ofthe Total Aerobic Bacteria count was 0.1x106- 4.8x106cfu/g. Enterobacteriaceaecount range from 0.4x102 to 1.9x102cfu/g. Escherichia coli count range from 0.04x102cfu/g. to 0.19 x102cfu/g.Salmonellawas only present in melting salads, beef skewers and chicken skewers samples. Bacillus cereus count range from 0,1x102 to 1,5x102cfu/g. Campylobacter jejuniwas only present in samples of ramanonaka and kobandravina. Two strains of presumptive Eschercichia coli O157 H7 (βglucuronidase -) were isolated. PCR method was used to confirm the identity of these two isolates. A high contamination above 106 cfu/g food and the presence of potential pathogens bacteria could be hazardous. Systematic inspections and training of food vendors on food hygiene and application of hazard analysis critical control point (HACCP) has been recognised as measures to guarantee improvement of the quality of street foods.
In order to clean up soils contaminated with hydrocarbons, the bioremediation activity of Pseudomonas putida was studied. Pseudomonas putida is a bacterium that can withstand the harshest environmental conditions. It is able to metabolize a wide range of petroleum hydrocarbons which is used as a source of carbon and energy. Given the potential of this microorganism, an experiment wasconducted on this strain.
For the isolation of this microorganism, a sample ofsoil from the Vakinankaratra region in the urban commune of Antsirabe II, Madagascar was microbiologically analysed. The bacterial identification was based on a study of the morphological, physicochemical and sequential analysis of the 16S rDNA gene.
Scored tablets provide dose flexibility, ease of swallowing and cost savings. However, some problems with scored tablets can be confronted like difficulty of breaking, unequally breaking and loss of mass upon breaking. This paper investigates the effect of score lines on the density distribution using continuum modelling. In keeping with previous work in the pharmaceutical field, a modified Drucker Prager Cap model is described briefly and used in the simulations. Coulomb friction is included between powder and tools. The microcrystalline cellulose (MCC) Vivapur® 102 was used to identify the model parameters using experimental tests with instrumented die, shear cell and diametrical crushing. The obtained results indicate that simulations may be useful not only to determine density distributions within tablets, but also may provide indications about performance of score lines.
In a plethora of countries, buildings are adapted to the local climate condition using sustainable architecture techniques and materials, thereby the highest level of climatic comfort is provided. For example, the walls and roofs reflecting sunlight have been used for centuries in the warm regions of the world, while in the cold regions, the maximum use of solar energy has been tended.
The process of modernization has created a high density, thereby demand for fast and affordable constructions in cities has subsequently increased, resulting in reduced attention to environmentally sustainable architecture techniques that, in turn, has led to the financial loss and scarcity of non-renewable energy resources over long periods of time.
Regarding the energy crisis and the necessity of saving non-renewable energy, the reduced need to use heating/cooling systems is assumed to be one of the key goals in advanced building design.
The present study was conducted based on causal research and simulation. Design Builder thermal simulation software was used as the tool to this end. Therefore, a building with/out solar chimney was modeled and analyzed to identify the effect of solar chimney on the amount of energy used for heating.
The control of motor rotation speed by the change of resistor resistance value in armature circuit is called ‘resistor control”. For the regulation of resistance value R0, included in armature winding circuit, we can use various technical solutions. The most used solution is the discrete variation of armature added resistance value by shunting its parts with contactors contacts. Nowadays, the change of resistor resistance in armature circuit can be realized by shunting with a given porosity γ of resistor R0 trough electronic keys. In this paper, we study the design of control system represented on figure 1.
A poultry yield prediction model have then designed using a data mining and machine learning technique called Classification and Regression Tree (CART) algorithm. The developed model has been optimized and pruned using the Reduced Error Pruning (REP) algorithm to improve prediction accuracy. An algorithm to make the prediction model flexible and capable of making predictions irrespective of poultry size or population has been proposed. The model can be used by poultry farmers to predict yield even before a breeding season. The model can also be used to help farmers take decisions to ensure desirable yield at the end of the breeding season.
Epoxidized sunflower oil (ESO) has been used to toughen epoxy resin GELR 128 cured with an accelerated aliphatic amine curing agent (Kingcure K-11) at room temperature. There was difference in the properties of the polymer composite materials based on epoxy resin GELR 128 cured by Kingcure K-11 between two processes: one-stage process and two-stage process for mixing ESO with epoxy resin GELR 128 at various content of ESO. The results showed that the two-stage process is considered to be more advantageous than the one-stage process. It can be concluded that the impact strength, critical stress intensity factor Kic and decomposition temperature of the polymer composite materials based on epoxy resin GELR 128 cured by Kingcure K-11 with content of ESO 5 phr in two-stage process was greater ones in one-stage process (impact strength: 35.012 kJ/m2, Kic: 2.72 MPa and decomposition temperature: 385.81 0C respectively).
A Network Intrusion Detection System (NIDS) monitors a network for malicious activities or policy violations [1]. The Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on x86 hardware virtualization extensions [2]. We design and implement a back-propagation network intrusion detection system in KVM. Compared to traditional Back Propagation (BP) NIDS, the Particle Swarm Optimization (PSO) algorithm is applied to improve efficiency. The results show an improved system in terms of recall and precision along with missing detection rates.
In this paper, we consider the scaling invariant spaces for fractional Navier-Stokes in the
Lebesgue spaces ( ) p n L R and homogeneous Besov spaces
, ( ) s n
p q B R respectively.
In the cellular communication applications of Code Division Multiple Access (CDMA) system, each user signal can be received in the different power levels in the input of the base station due to different distances of the users. In that case, signal of the user that is closer to the base station increases the communication errors of the far users. To solve this problem, open or closed loop power control system is used to make each user signal equals in the input of the base station. Power prediction and power control have been performed with various methods in the literature. In this study, two different methods will be investigated and will be compared with each other in terms of power control performance. The power at the output of the matched filter is predicted using neural network and fuzzy inference system, power control is realized according to the predicted values.
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Measuring the facility of use of a website designed with a methodology based on concepts of design of ontologies
1. International Journal of Innovation Engineering and Science Research
Open Access
Volume 2 Issue 4 July-August 2018 33|P a g e
ABSTRACT
Measuring the facility of use of a website
designed with a methodology based on concepts
of design of ontologies
José Antonio Zárate M., Angélica Rosales L, Ma. Guadalupe Guerrero N., Beatriz
Oralia Ríos V. Patricia Rivera A.
Institute of Technology of San Luis Potosi, Tecnológico avenue s/n Col. UPA, Soledad de Graciano Sanchez
San Luis Potosí, México.
Acceptance of a website is determined by various factors, one of the most important is the organization that
allows users to access to functions, resources and information that it contains. This work consisted of a study of
comparative usability between a website designed using principles of linguistics and design of ontologies and
other using a strategy of a commercial product. A plan was designed and applied to evaluate the following
aspects of website: ease of use, efficiency to access its information, efficacy to perform tasks and user
satisfaction. Heuristic and user tests were used as diagnostic tools in usability evaluations, and an observation
guide was made by an external evaluator as a complement to previous tests. The results clearly shown that is
better use the proposed website design methodology. This allows to create site more structured, functional and
with greater ease of access to resources that it contain.
Keywords—Ontology, heuristic tests, usability, websites
I. INTRODUCTION
Design of website includes various stages that involve: technical development, information structure
and visual design [1]. As any artifact used by humans, the design requires an architecture that is well
structured, organized, functional and useful content; and that it involves from its conception usability.
This is an attribute of quality that measures ease of use in user interfaces (IU) [2].
This work describes a study of usability comparative; this is oriented at end users of a website
designed based on a methodology adapted based on design of ontologies [3] against a site designs
with a commercial product strategy [4].
II. DESCRIPTION OF PROBLEM
In a previous work [3], it was evaluated the usability of structure of a website planned with a
methodology adapted to be assimilates more easily by designers. The results obtained confirmed a
better understanding of the designers in their interaction with website structure, and improvements in
aspectsas efficacy, efficiency and subjective satisfaction. As next stage, it is necessary to contrast the
degree of usability from end users’point of viewof a website of the proposed methodology against the
design of commercial option, to identify advances in ease and simplicity of use, efficiency and
effectiveness in access to information, to obtain a satisfactory experience of users with website
designed with our proposed methodology.
2. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 34|P a g e
III. SOLUTION PROPOSAL
A plan was designed and implemented to evaluate the usability of website design, using user test as
known as Test of Guerrilla [5]; and with this determines issues in usage and interaction of users with
the website interface. Evaluation instruments consisted of usability heuristics, [6], observation guide
and usability metrics supported by: [7], [8][9], [5], [10], [11], [12], [13][14],[15], [16].
Previously to this study, two websites were designed (figure 1), these design with different
methodologies [3] and [4]. To avoid certain slant with final results, both designs were implemented
using Adobe Dreamweaver CS5 and HTML.
Schoolwebsite
Adapted Methodology
Design web structure base on ontologies
Schoolwebsite
Alternative web design
Fig. 1. School websites used in tests
A. Evaluation of the usability of website design applying user test
Environment in which the test were made is described below, description of end users is shown in table
I, material used is shown in table II and photography of interference and distractions-free spaces that
were used are shown in figure 2:
TABLE I. GENERAL INFORMATION OF THE GROUP OF EVALUATION OF THE USABILITY OF WEBSITE
General data on participant group Description
Test date From 20 Aprilto 2 May 2017
Place where the test is performed Faculty of Engineering of the UASLP,
México
Type of participants Students
Age From19 to 21 yearsold
Gender 6 women, 4 men
Participants with experience in web
design
2 women, 3 men
TABLE II. MATERIAL AND THE EQUIPMENT USED IN THE USABILITY TEST OF WEBSITE
Equipment 3 laptops Hewlett Packard with operating system Windows 7
3. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 35|P a g e
Internet browser: Internet Explorer, Mozilla Firefox and Google Chrome
Projector Epson Power Lite S6+
Material
Electronic and printed document of exercises of No. 3 practical Case
Electronicand printed document of the evaluation questionnaire
Printed document of the observation guide
Fig. 2. Mechatronics Laboratory of the Faculty of Engineering of Autonomy University of San Luis Potosi.
B. Execution user test to evaluate the usability of website
Previously, tasks to be performed by users were designed for usability test of website, grouping these
in next three steps:
Step 1: Provide to users specific instructions from their tasks to be performed, using an electronic and
printeddocument. This was refined from a draft handbook used in a previous usability study [3].
Step 2: The users were instructed in the tasks to be executed when they accessing website, and
information that they should get when they were interacting with web interface; also, it was explained to
them how register information about realization of their tasks; and how to use base 7Likert
questionnairetrying to avoid in results a possible bias. Treatment of the users were with respect and
kindness, gaining their confidence so that they would be willing to expose in a written or verbal form
their doubts, observations and comments. As result, users weremore active and more enthusiastic
when they were resolving the tests. Each interaction of them with website provided relevant and timely
information.
Step 3: During the development of the user’s test, an evaluator applied two instruments to the users: a
questionnaire to check the usability of website and an observation guide to determine performance and
interaction of them when using the web interface (figure 3).
Fig. 3. User and evaluator during the usability testing of website
4. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 36|P a g e
C. Exercises and results of usability evaluation of website applying user’s test
Exercises and results of the user’s test are described in detail below:
Exercise 1: The users interacted and navigated through interface of School website to familiarize with
it. This exercise was important to achieve next tasks.
Exercise 2: The users navigate through the website, to search information about the personnel that
work in this institution, he selected in his interaction with website an element (a relationship found) and
returned to the main concept.
Exercise 3: The users navigated through the website and found links on the different proceedings of
institution. He recorded at least two procedures in the format provided and returned to home page.
Exercise 4: The user in his interaction and navigation through website, found concepts that make up
infrastructure of school website. He documented at least two elements related to this task and returned
to the start point.
Exercise 5: The user agreed and interacted with website to search and find information about the
educational offer, careers or training offered by institution.
General results derived from user’s test exercises are described in figure 4, this shows the percentage
of completed tasks.
Fig. 4. Compliance of exercises of user’s test in the evaluation of the usability of websites
In figure 5, overall average of clicks that users gave during performance of user’s test exercises is
displayed.
100% 100%
90%
80%
100%100% 100%
80%
60%
80%
0%
20%
40%
60%
80%
100%
120%
Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5
Compliance with the exercises of user's test in the
evaluation of the usability of website
Adapted
Methodology
Alternative
web design
5. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 37|P a g e
Fig. 5. Overall average clicks per exercise
After of test´s end, users answered questionnaire (using Liker-7 scale), and their results are described
in table III. The global average represents the degree of subjective satisfaction of users to perform the
exercises of user’s test in their interaction with websites.
TABLE III. OVERALL RESULTS OF THE SUBJECTIVE SATISFACTION OF USERS WITH RESPECT TO THE DESIGN OF WEBSITE
The comments of users highlight the ease of navigation to access contents and elements that structure
both sites designs, however, results of subjective satisfaction questionnaire demonstrate (table III) that
users expressed greater pleasure towards ease of use and functionality of the website designed with
the adapted methodology, considering that this was useful and helped them to complete their tasks
more quickly and fewer clicks.
D. Usability evaluation results of website using an observation guide
In the development of usability test, an evaluator estimated and recorded data obtained by users when
performing the user test exercises. Geometric mean was chosen to resume usability metrics derived
from the calculation of each one of aspects and attributes evaluate in the tests (Table IV).
2.4
2.8 3.1
2.4
3.1
3.6
4.1
3.2
0
2
4
6
8
Exercise 2 Exercise 3 Exercise 4 Exercise 5
Clicks
Overall average clicks per exercise in the application of user's test
to evaluate the usability of website
Alternative
web desig
Adapted
Methodology
Usabilityaspects
% Global average
AdaptedMethodology
% Global average
Alternative web design
Consistency 93.6 % 85.7 %
User’ control 92.2 % 82.2 %
Visual presentation 92.9 % 84.3 %
Handling and recovery from errors 92.9 % 78.6 %
Reducingmemory load 91.4 % 85.0 %
Overallsatisfaction 91.1 % 80.7 %
Guide and help 91.4 % 75.7 %
Usingrelationships 90.0 % 86.5 %
Generalaverage 91.94 % 82.34 %
6. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 38|P a g e
TABLE IV. GLOBAL RESULTS IN THE EVALUATION OF METRICS AND USABILITY ASPECTSOF WEBSITE,
UsabilityMetrics
Attributes
* Time measured in minutes
(min.)
Geometric mean per aspect Percentage
Adapted
methodology
base on
ontologies
Alternative
web design
Relative score
between two
web designs
Improvement
between two
web designs
Success Success 95.4 90.9 104.9 4.9
Content
Time taking the task, min. * 43.3 51.7 119.4 19.4
Errors 9.8 14.2 144.3 44.3
Knowledgememory 80.4 60.3 133.2 33.2
Memory of memory 85.6 79.5 107.6 7.6
Time toremember, seconds 1.9 3.7 192.2 92.2
Efficiency
Functioning in the tasks, min. 4.8 5.7 119.5 19.5
Time spent in errors, min. 8.7 17.1 195.8 95.8
Frequency to go for help 67.8 75.7 111.5 11.5
Efficacy
Taskscompleted at 100% 90.7 81.4 111.3 11.3
Partialtasks 9.2 18.5 200.1 100.1
Success 95.4 90.9 104.9 4.9
Time to complete the task, min. 4.8 5.7
119.5 19.5
Time spent on errors, min. 8.7 17.1 195.8 95.8
Frequency to go for help 67.8 75.7 111.5 11.5
Usersatisfaction
Utility-control, minutes 34.5 30.1 114.3 14.3
Likingforexercises 85.5 68.1 125.6 25.6
Frustration or displeasure for
exercises
14.4 31.9
220.7 120.7
Help in the completion of tasks 84.7 72.2 117.2 17.2
In figure 6, is observed the evaluation of efficiency of websites to access and to search information.
Fig. 6. 1 Geometric mean of efficiency in the usability evaluation of websites
In figure 7 is shown the evaluation of the efficacy of websites, with the adapted methodology is
obtained a success of 95.46% and in fulfillment of the tasks a 90.72%.
4.81
8.73
67.85
5.75
17.1
75.71
0
10
20
30
40
50
60
70
80
Functioning in the
tasks
Time spent in errors Frequency to go for
help
Efficiency of websites
Alternative
web design
Adapted
methodology
7. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
Volume 2 Issue 4 July-August 2018 39|P a g e
Fig. 7. Geometric mean of efficacy in the evaluation of websites
In figure 8, evaluation of the user’ssatisfaction in their interaction and access to websites is observed.
Fig. 8. Geometric mean of the subjective satisfaction in the usability evaluation of websites
Finally, considering the previous aspects (table IV),geometric mean of results show an improvement
of 29.9% between websitedesign of the adapted methodology and the alternative web design (table V).
90.72
9.27
95.46
4.81
8.73
67.85
81.45
18.55
90.93
5.75
17.1
75.71
0
20
40
60
80
100
120
Taskscompletedat
100%
Partialtasks
Success
Timetocomplete
thetask
Timespentonerrors
Frequencytogofor
help
Efficacy of websites
Adapted
methodology
Alternative
web design
34.52
85.54
14.45
84.7
30.19
68.1
31.9
72.22
0
10
20
30
40
50
60
70
80
90
Utility-control Liking for
exercises
Frustration or
displeasure for
exercises
Help in the
completion of
tasks
Satisfaction of users with website designs
Adated
methodology
Alternative
web design
8. José Antonio Zárate M et al. “International Journal of Innovation Engineering and Science Research”
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TABLE V. GEOMETRIC MEAN RESULTS IN THE VALIDATION OF USABILITY OF WEBSITE
IV. CONCLUSIONS
Techniques applied in evaluating of the usability of websites were based on user-centric design
(UCD)[14], this required implementing valuation instruments and involving potential users to test their
interaction with website. Different evaluation methods used in usability test, such as heuristic test and
user test helped us to understand and know participants interests, their needs of information, their
subjective perception and observations. These methods favored to understand fulfillment heuristics
and usability metrics in websitedesign, and so that we need concrete information about facility of use,
efficiency, efficacy and subjective satisfaction; as well as main problems and limitations of the design,
and the proposal to optimize this toward a better experience for users.
The results obtained in the usability test of website with the heuristic test, the observation guide and
usability metrics give validity to the affirmation that using the methodology [3] in the design of web
structure, provides a more accessible, simple and intuitive interface to the final-user. This improves
efficiency in search of information because its structure is organized, coherent and consistent;
therefore, this ensures efficiency of website’s operation to facilitate navigation to the users, allow them
to access more quickly and less time to elements and content of pages; and it provides satisfaction to
the users during their interaction, adapting website to theirs real needs of search.
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