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The paper aims to present a part of a wider study, performed at the Department of LIS&BS at the University of Ljubljana (UL). The study investigated the perceptions of user friendliness of information retrieval (IR) systems.

An expert study and a user study were performed. The user study was based on the results of the previous expert study, which surveyed the interfaces of four e‐journal IR systems (Science Direct, Proquest Direct, Ebsco Host and Emerald) and has been published separately. In the user study three of these interfaces were used: Science Direct, Proquest Direct, and Ebsco Host. A pilot study with ten subjects and a main study with 61 subjects, all postgraduate students of the UL, was performed. Questionnaires and observation were used for data collection. The users' perceptions of user interfaces were investigated and compared to the findings of the expert study.

It was found that users do not show high appreciation of auxiliary functions (such as search history, indexes, etc.) and do not use them to a great extent. They also do not prefer to have available different full‐text formats. Perceptions of user friendliness of elements and functions were different in each interface. For each interface it was also established that different functions and elements were influential in the overall perceptions of the interface friendliness. In comparison of the findings of the expert and user study it was found that the expert study was in some cases too detailed and investigated aspects not perceived by the users. For this reason, certain findings of both studies were not appropriate for comparison.

The methodology of data collection was rather demanding and lengthy, and influenced the type and size of sample. Because of that it may not be possible to generalise the result to all users of e‐journals. Also, large quantities of data were collected which could be studied further.

The results of the study are relevant for the design of the user interfaces of IR systems. They also have implications for other areas, e.g. user education and training.

The study investigates the users' own perceptions of user friendliness of the e‐journal interfaces and also compares them to the findings of the expert study. This gives a valuable insight and provides many different viewpoints in regard to user friendliness, which in itself is a demanding concept.

This paper aims to investigate how various organizational interfaces between firms, units and functions, and the interplay between them, are developed and mobilized in product development processes.

The theoretical framework is based on the industrial network approach, including interactive resource development and the concept of organizational interfaces. A single case study is conducted at a world-leading industrial tool manufacturer, illustrating how resources are combined over time, crossing boundaries of firms, units and functions in the development of a hand-held digitalized tool for quality assurance in the production of cars. Data have been collected through semi-structured interviews, with additional data in the form of project reports, internal documents and practices for external collaboration.

In addition to inter-organizational interfaces, the study identifies a typology of scouting, embarking and integration interfaces at unit level (geographically spread units of one multinational corporation) and interpretation and reciprocal interfaces at function level. The conclusions show that these interfaces affect the outcome of three aspects of the product development process: product characteristics and functionality features, system integration and organizational network extent. Existing interfaces serve as a platform for developing interaction further and provide the interfaces with new content, thus moving between different types of interfaces. Product development processes also involve new interfaces where there was no previous interaction between the parties.

This research has implications for the interplay between interfaces in cases involving multiple external and internal actors in resource combining efforts.

External interactions between firms influence and impact internal activities and resources. Managers need to be aware of the complex interdependencies between external and internal interfaces and resources. Managing organizational interfaces is about both exploiting established interfaces and developing new ones. Consequently, existing interfaces may be activated differently to align with new interaction purposes, which, in turn, requires efforts to combine resources according to the new conditions.

Previous research contains a typology of organizational interfaces between customers and suppliers. The study expands on this research by identifying internal interfaces between units and functions.

The present study aims to review the literature concerning Digital Libraries (DLs) and user interfaces in order to identify, determine, and suggest evaluation criteria for a DLs user interface. Accordingly, this study's objectives are threefold: explore which criteria exert a significant relationship with the DLs user interface; identify a set of criteria that appears to be useful for evaluating DLs user interface; and determine evaluation criteria that have more frequency and occurrence in the related texts reviewed.

To do it, first, identifying related texts was necessary. Consequently, keywords such as “DLs user interface evaluation”,” DLs user interfaces”, “DLs evaluation”, “DLs usability”, “user interface evaluation”, “DLs research”, “web sites user interface evaluation”, “user interface standards”, and the like have been searched in the web as well as in some leading databases including Emerald, Proquest, SagePub, ScienceDirect, LISA, ERIC, ACM, and Springer. After identifying and accessing more than 100 evaluative works and some related articles, theoretical and empirical, nearly 50 sources were chosen for final examination.

After reviewing related texts, three major categories are identified: user interface and DLs; DLs and usability; and other studies related to user interface; each one of three identified categories has its own subcategories. Additionally, 22 evaluation criteria for assessing DLs interface have been identified.

The review does not claim to be comprehensive.

Hopefully, criteria such as feedback, ease of use, match between system and the real world, customization, user support, user workload, interaction, compatibility, visibility of system status, user experience, flexibility, and accessibility which have been less considered should be applied more in future, particularly user‐oriented, studies. Furthermore, it is expected that criteria mentioned here could help related bodies pay more attention to the evaluation of EISs, especially DLs interface.

It can be said that this study has contributed to the research into the evaluation of DL interface.

The purpose of this paper is to characterize the interfaces between manufacturing companies and the Internet of Things (IoT) suppliers involved in their digital servitization.

This paper builds on an explorative case study of a manufacturing firm and its IoT suppliers. This paper relies on the Industrial Network Approach to study interfaces between buying firms and their suppliers.

This paper identifies three distinct types of supplier interfaces: connected, digital and digital-physical. They all contain technical resource interfaces with additional organizational and/or technical complexities that need to be managed. Connectivity, an Agile approach to software development and strong technical dependence emerged as key factors that impact the interactions between manufacturing firms and IoT suppliers and how their resources are combined.

This paper offers managerial implications regarding the importance of internal organization (such as appropriate cross-functional teams) to manage the dynamics of collaborations required by digital technologies, maintain interactions with IoT suppliers and identify and manage interdependences between IoT suppliers. Building close relationships with suppliers of crucial infrastructure (e.g. IoT cloud platform and data security systems) can also be beneficial for manufacturing firms to reduce risks. Finally, attention should be given to IoT technology strategy, which impacts both digital and digital-physical supplier interfaces.

In digital servitization, manufacturing firms are heavily reliant on external resources for IoT technology. Despite this, few studies have investigated the characteristics of their interfaces with IoT suppliers, how these can be managed and how resources are combined.

The rapid growth of m-commerce and mobile marketing has flooded the users with homogeneous contents that raise little user interest making the users' browsing pattern on these contents aimless free browsing. However, the interface that presents the mobile marketing contents triggers much user attention, especially the layout. Without significant usability defects, the layout poses influences on the user's aesthetic experience. Identifying the layout attributes that affect user aesthetic preference is critical to the design of mobile marketing interfaces since they influence users' interaction intention, cognitive process, and decision-making.

In this paper, 6 layout attributes that quantify the aesthetic design of the interface layout and 3 eye-movement indicators that connect to human aesthetic preference were identified through literature research. An eye-tracking experiment measuring the 3 eye-movement indicators on 6 pairs of interface layout materials corresponding to the 6 layout attributes was conducted. The experiment was designed to mimic the free browsing context in mobile marketing. The materials were divided into Liked/Disliked preference groups according to the response of the subjects. Analysis of indicators on materials between the L/D groups shows that the attributes of balance, centricity, density, simplicity, and symmetry affect user aesthetic preferences.

Analysis of the attribute value levels shows that balance, centricity, and density are responsible for addressing users' aesthetic preferences for a disliked interface layout. The study suggests an attribute set for quantitatively optimizing the aesthetic design of mobile marketing system interfaces and provides evidence for the visual attention and cognitive process under the free browsing context.

The study contributes to the field both theoretically and practically: (1) it provides support for optimizing the interface layout of mobile marketing systems quantitatively from the aesthetic perspective. (2) It promotes the cognitive attention theory by providing evidence for the cognitive process of interacting with mobile marketing interfaces from the perspective of visual attention and cognitive fluency. (3) It expands the objects of visual perception from traditional or symbolic artworks (such as logos) to the abstract visual stimuli of interface layout. (4) It suggests an optimization tool of five quantification layout attributes for mobile marketing businesses and platforms to aesthetically improve their marketing interfaces to improve user experiences.

Aims to present a comparison and evaluation of four user interfaces of web‐based e‐journals (Science Direct, ProQuest Direct, EBSCO Host and Emerald).

The systems were assessed in an expert study according to accepted guidelines regarding user friendliness and functionality. User friendliness features studied were: language(s) and type(s) of interface; navigation options; personalization; and screen features. Functions inspected were: database selection; query formulation and reformulation; results manipulation; and help.

Many similarities were found, but some differences among the systems were also discovered and analysed in detail. The greatest differences were found in the area of query formulation, and between the interface languages and types.

The user interfaces of four full‐text IR systems offering e‐journals which are accessible at the University of Ljubljana are surveyed.

The interfaces are surveyed and assessed in order to discover their characteristics, advantages, and potential downsides and/or mistakes which may hinder use by an average user.

The study serves as a basis for a subsequent user study of the information behaviour of the users of these systems.

The purpose of this article is to review the research on human‐computer interfaces for library‐based commercial online information retrieval (IR) systems.

The review first focuses on basic interface issues for information retrieval such as interface style, end‐user searching, query formulation, relevance feedback and browsing. The second part deals with cognitive engineering in IR including mental models and individual differences. Finally, the topics on user interface engineering are covered. These include user interface guidelines, usability evaluation methods and interface engineering techniques.

The review shows that user interface design has received a limited attention from IR researchers. There is a need for adopting human‐computer interaction (HCI) techniques into IR interface designs, but this issue has not yet been fully recognised by the commercial database vendors and distributors. The paper recommends that applying HCI techniques could help in developing more usable IR interfaces.

The review identifies the main activities of a user‐centred design methodology and suggests that IR interface designers should use this method in future. This could have major implications in IR interface design for end‐user searching.

The review is the first to offer an overview of empirical research on IR interface design and IR usability engineering. Both IR researchers and practitioners may benefit from the description of previous research and the user‐centred design advocated by the current research.

The purpose of this empirical study was to address two important concerns of Web usability: how user-intuitive interface signs affect Web usability and how applying semiotics (i.e. the doctrine of signs) in user interface (UI) design and evaluation helps to improve usability.

An empirical research approach is followed here to conduct three user tests. These tests were conducted on a Web application with 17 test participants. Data were gathered through laboratory-based think-aloud usability test, questionnaires and interviews. Following an empirical research approach, statistics and user behavior analysis were used to analyze the data.

This study explores two important concerns of UI design and evaluation. First, users’ interpretation accuracy of interface signs impact on Web usability. The study found that users’ interpretation of signs might be accurate, moderate, conflicting, erroneous or incapable; user-intuitive interface signs led participants to interpret signs’ meaning accurately; and users’ inaccurate interpretation of one or a few task-related interface sign(s) led users to usability problems, resulting in participants performing tasks with lower task-completion performance. Second, considering semiotics perception in UI design and evaluation is important to improve Web usability. This study showed that interface signs, when re-designed considering the semiotics guidelines, have increased the end-users’ interpretation accuracy and the interface signs’ intuitiveness. This study also provides a small set of semiotics guidelines for sign design and evaluation.

This study empirically demonstrated that signs’ intuitiveness impact on Web usability and that considering the semiotics perception in sign design and evaluation is important to improve Web usability. These outcomes are valuable in a number of ways to HCI researchers and practitioners: the results provide awareness of the importance of user-intuitive interface signs in UI design; practitioners can easily adopt the concept of interpretation accuracy classification to conduct a sign test to obtain an “overall impression of interface signs’ intuitiveness”; practitioners can easily adopt the methodological approach followed in this study to conduct usability test without additional resources; and the results raised important fundamental questions for future research such as “what does a practitioner need to be aware of when designing or evaluating interface signs?”

The purpose of this paper is to investigate supplier interfaces in technological development.

The theoretical framework is based on the industrial network approach and, in particular, the concept of supplier interfaces (standardized, specified, translational and interactive). The empirical study consists of a case study of a supplier relationship between an established truck manufacturer and one of its partners in technological development. This supplier relationship has its base in joint projects on developments in automation.

The empirical study provides evidence of three types of interfaces that are characteristic of technological development and discusses their development and how they are used in combination. The three types are follows: specified, translational and interactive. The conclusions show that developing an interface from specified to translational or interactive is challenging and technological development characterized by uncertainty may call for certain interfaces that are not of value in other settings, such as industrial production.

By applying the interface concepts to technological development in collaboration with suppliers and related identifying characteristic interfaces, this paper aims to extend the literature on how suppliers can be engaged in uncertain endeavours such as development projects.

This paper aims to present an overview of the challenges encountered in integrating visual search interfaces into digital libraries and repositories. These challenges come in various forms, including information visualisation, the use of knowledge organisation systems and metadata quality. The main purpose of this study is the identification of criteria for the evaluation and integration of visual search interfaces, proposing guidelines and recommendations to improve information retrieval tasks with emphasis on the education-al context.

The information included in this study was collected based on a systematic literature review approach. The main information sources were explored in several digital libraries, including Science Direct, Scopus, ACM and IEEE, and include journal articles, conference proceedings, books, European project reports and deliverables and PhD theses published in an electronic format. A total of 142 studies comprised the review.

There are several issues that authors did not fully discuss in this literature review study; more specific, aspects associated with access of digital resources in digital libraries and repositories based on human computer interaction, i.e. usability and learnability of user interfaces; design of a suitable navigation method of search based on simple knowledge organisation schemes; and the use of usefulness of visual search interfaces to locate relevant resources.

The main steps for carrying out a systematic review are drawn from health care; this methodology is not commonly used in fields such as digital libraries and repositories. The authors aimed to apply the fundamentals of the systematic literature review methodology considering the context of this study. Additionally, there are several aspects of accessibility that were not considered in the study, such as accessibility to content for disabled people as defined by ISO/IEC 40500:2012.

No other systematic literature reviews have been conducted in this field. The research presents an in-depth analysis of the criteria associated with searching and navigation methods based on the systematic literature review approach. The analysis is relevant for researchers in the field of digital library and repository creation in that it may direct them to considerations in designing and implementing visual search interfaces based on the use of information visualisation.