Navigation Features Research Articles

Innovative E-Commerce Site Design: A Conceptual Model to Match Consumer MBTI Dimensions to Website Design

ABSTRACT Designing an e-commerce site that will appeal to customers and convince them to purchase a product or service becomes difficult because of the variety of personalities and preferences that individual customers may have. One approach is to base the website's text, imagery, and navigation features on customers' personality types. The goal of this paper is to propose a conceptual model that links the Myers-Briggs Type Indicator's (MBTI) personality dimensions to business-to-consumer e-commerce website design. The model can offer guidance to those e-retailers who want to target their products at a particular audience.

The Usability of the Journal Finder Interface

ABSTRACT This study evaluates the usability of the Journal Finder integrated search interface, developed at the Jackson Library at the University of North Carolina at Greensboro. This interface provides electronic access to publications including journals, newsletters, newspapers, and magazines. This study was conducted to determine how intuitive and learnable the interface is for accessing online publications. The participants consist of four user subgroups: undergraduate students, graduate students, staff, and faculty. The study evaluates the efficiency and effectiveness of the interface to support the participants' tasks of accessing online publications by using pretest questionnaires, task-analysis techniques, think-aloud protocol, scenarios, and post-test questionnaires. This study also evaluates the Journal Finder online tutorial. The study finds that the Journal Finder interface is easy to use, simple to learn, efficient, and effective for all subgroups. The effectiveness error rate and efficiency-time-to-completion measurement is comparable for all four subgroups in completing their tasks. The areas recommended for improvement to enhance the intuitiveness of the Journal Finder interface are the understandability of the navigational features, icons, and terminology and the creation of an easy-to-understand online tutorial. This study is novel because it examines the efficiency and effectiveness of the interface to facilitate access to electronic publications for not only students but also for faculty and staff.

New Techniques of Mapping and Ablation for Tachyarrhythmias in Children

Advancement in mapping and ablation technologies in the past decade has made arrhythmia treatment in children safer and more effective. Electroanatomical mapping systems with features of nonfluoroscopic navigation, 3D-geometry construction and color-coded arrhythmia mapping have been extensively used to map and ablate tachycardias in children. In addition, a variety of cooled radiofrequency ablation systems have been used in selected patients to create larger and deeper lesions. Cryoenergy ablation, with its reversible nature of tissue injury during the cooling phase, is emerging as the energy of choice for ablating perinodal arrhythmias to minimize the risk of inadvertent conduction block. Other evolving ablation systems, including cryoballoon, high-intensity focused ultrasound balloon and a hybrid catheter capable of delivering both radiofrequency and cryoenergy, are also under investigation. Finally, a remote navigation system that minimizes radiation exposure and will enable physicians of all skill levels to reach difficult target sites in children is on the horizon.

Prototype personal navigation system

Honeywell Laboratories recently funded the development of a prototype personal navigation system based on MEMS technologies. The system components include a MEMS inertial measurement unit, a three-axis magnetometer, a barometric pressure sensor, and a SAASM GPS receiver. The system also uses Honeywell's human motion-based pedometry algorithm. The navigation process is based on a strap-down inertial navigator aided by feedback from a Kalman filter using typical measurements from the GPS, magnetometer and barometer when available. A key innovation is the addition of an independent measurement of distance traveled based on the use of a human motion algorithm. The navigation system combines the best features of dead reckoning and inertial navigation, resulting in positioning performance exceeding that achieved with either method alone. Subsequent to the Honeywell effort, DARPA funded an individual Personal Inertial Navigation System (iPINS) seedling program. Honeywell worked to improve the baseline personal navigation system with the objective of demonstrating the feasibility of reliably achieving navigation accuracy < 1 % of distance traveled in GPS-denied scenarios. In addition, an analysis was conducted to determine the benefit of incorporating terrain correlation into the personal navigation system. The results of this analysis indicate that overall navigation accuracy can be significantly improved through the application of terrain correlation. This presents an are presented. In addition, conclusions from the terrain correlation analysis conducted under the iPINS seedling program are included.

A Randomized Controlled Trial Using Patient Navigation to Increase Colonoscopy Screening among Low-Income Minorities

Organizational barriers play a key role in colorectal cancer (CRC) screening disparities in low-income minorities. This is a prospective, randomized trial to determine whether a patient navigator (PN) can help overcome the organizational barriers low-income minorities face in trying to obtain screening colonoscopy. Patients of average risk for CRC were referred by their primary care physician for screening colonoscopy. After the PN received the referral, patients were randomly assigned to either receive navigation (PN+) to screening colonoscopy or not receive navigation (PN-). We hypothesized that a PN would increase patient compliance with screening colonoscopy. A total of 21 patients were enrolled in the pilot study (PN+ = 13, PN- = 8); 54% of navigated patients completed screening colonoscopy versus 13% of nonnavigated patients (p = 0.058). Eighty-six percent of navigated patients had an excellent or very good colon prep; however, there was no difference in prep quality between groups ( p = 0.10). One-hundred percent of navigated patients were very satisfied with navigation services. A PN improves compliance with screening colonoscopy in low-income minorities. Larger studies are needed to evaluate what features of navigation are most effective in facilitating completion of screening colonoscopy.

ANTLRWorks: an ANTLR grammar development environment

AbstractProgrammers tend to avoid using language tools, resorting to ad hoc methods, because tools can be hard to use, their parsing strategies can be difficult to understand and debug, and their generated parsers can be opaque black‐boxes. In particular, there are two very common difficulties encountered by grammar developers: understanding why a grammar fragment results in a parser non‐determinism and determining why a generated parser incorrectly interprets an input sentence. This paper describes ANTLRWorks, a complete development environment for ANTLR grammars that attempts to resolve these difficulties and, in general, make grammar development more accessible to the average programmer. The main components are a grammar editor with refactoring and navigation features, a grammar interpreter, and a domain‐specific grammar debugger. ANTLRWorks' primary contributions are a parser non‐determinism visualizer based on syntax diagrams and a time‐traveling debugger that pays special attention to parser decision‐making by visualizing lookahead usage and speculative parsing during backtracking. Copyright © 2008 John Wiley &amp; Sons, Ltd.

Indexation and abstract of digital documents and multimedia

The production of digital documents and multimedia remodeled the abilities and attitudes of the producers, transmitters and users of information imposing the need of integrated approach between theory and practice of the processes of the content analysis, representation and recuperation of digital documents and&#x0D; multimedia. From this presupposed, the current work, distributed in 11 chapters, details the changes - structural and of input – in the production of documents which lead to the re-structuration of the document&#x0D; al organization. At this point, for an adequate processing of the multimedia systems it is necessary to integrate the iconic, literal and auditory languages, being that this integration propitiates features of interactivity, ramification, transparency and navigation (interactividad, ramification, transparency y navigation), that are related directly to the system user.

Motion Control of Passive Intelligent Walker Using Servo Brakes

We propose a new intelligent walker based on passive robotics that assists the elderly, handicapped people, and the blind who have difficulty in walking. We developed a prototype of the robot technology walker (RT walker), a passive intelligent walker that uses servo brakes. The RT walker consists of a support frame, two casters, two wheels equipped with servo brakes, and it has passive dynamics that change with respect to applied force/moment. This system is intrinsically safe for humans, as it cannot move unintentionally, i.e., it has no driving actuators. In addition, the RT walker provides a number of navigational features, including good maneuverability, by appropriately controlling the torque of servo brakes based on RT. We propose a human adaptive motion control algorithm that changes the apparent dynamics to adapt to user difficulties, and an environmentally adaptive motion control algorithm, which incorporates environmental information to provide obstacle/step avoidance and gravity compensation functions. The proposed control algorithms are experimentally applied to the RT walker to test their validity.

Interaction in Virtual Archives: The Polar Bear Expedition Digital Collections Next Generation Finding Aid

This article analyzes the design and provides a preliminary evaluation of an experimental finding aid incorporating social interaction created by the Finding Aids Next Generation Research Group at the University of Michigan. It discusses the development of the Polar Bear Expedition Digital Collections, an online access tool employing Web 2.0 technologies and evaluation of the first six months of its deployment (January-June 2006). Using Web analytics, an online survey, semistructured interviews, and content analysis of comments, the researchers explore visitors' initial reactions, and their uses of and interactions with this new type of finding aid. The study also offers insights from other disciplines and considers how social navigation features might enhance accessibility to archival materials. Initial findings suggest that enabling direct and indirect interaction among visitors and archivists, collaborative filtering, and other Web 2.0 features might make archival materials more accessible and enrich the traditional finding aid.

Road Selection Using Multicriteria Fusion for the Road-Matching Problem

This paper presents a road selection strategy for novel road-matching methods that are designed to support real-time navigational features within Advanced Driving-Assistance Systems (ADAS). Selecting the most likely segment(s) is a crucial issue for the road-matching problem. The selection strategy merges several criteria using Belief theory. Particular attention is given to the development of belief functions from measurements and estimations of relative distances, headings, and velocities. Experimental results using data from antilock brake system sensors, the differential Global Positioning System receiver, and the accurate digital roadmap illustrate the performances of this approach, particularly in ambiguous situations

Multi-hypothesis localization with a rough map using multiple visual features for outdoor navigation

We describe a method of mobile robot localization based on a rough map using stereo vision, which uses multiple visual features to detect and segment the buildings in the robot's field of view. The rough map is an inaccurate map with large uncertainties in the shapes, dimensions and locations of objects so that it can be built easily. The robot fuses odometry and vision information using extended Kalman filters to update the robot pose and the associated uncertainty based on the recognition of buildings in the map. We use a multi-hypothesis Kalman filter to generate and track Gaussian pose hypotheses. An experimental result shows the feasibility of our localization method in an outdoor environment.

Next Generation Finding Aids: Creating the Polar Bear Expedition Digital Collections

Although the advent of the Internet has increased the amount of information about primary sources online, the intellectual accessibility of archival materials and researchers' ability to effectively reuse digital archival materials and surrogates is not known. Many of the online representations of archival information, e.g., finding aids, mirror their paper counterparts both in look and in functionality and do not take advantage of the electronic environment. This paper describes the design, implementation and launch of a new type of archival access system, the Polar Bear Expedition Digital Collections (http://polarbears.si.umich.edu) which provides traditional searching, browsing, and interlinking as well as social navigation features such as collaborative filtering, commenting, and awareness of other registered visitors.

User Help and Service Navigation Features in Government Web Sites

This article examines the user help and service navigation features in government Web sites and compares them across levels of government. These features are critical to ensuring that users unfamiliar with government are able to successfully and easily access e-government services and information. The research finds clear patterns in the use of similar help and navigation features across governments, leading to a conclusion that these features are diffusing in the public sector Web development field. The article concludes by stating that Web developers should work to overcome a second digital divide, one of a lack of knowledge of Web site organization and government structure. Users need to be actively assisted to find information by Web developers.

Users Browsing Behaviour in a DDC-Based Web Service: A Log Analysis

SUMMARY This study explores the navigation behaviour of all users of a large web service, Renardus, using web log analysis. Renardus provides integrated searching and browsing access to quality-controlled web resources from major individual subject gateway services. The main navigation feature is subject browsing through the Dewey Decimal Classification (DDC) based on mapping of classes of resources from the distributed gateways to the DDC structure. Among the more surprising results are the hugely dominant share of browsing activities, the good use of browsing support features like the graphical fish-eye overviews, rather long and varied navigation sequences, as well as extensive hierarchical directory-style browsing through the large DDC system.

Internet retail store design: How the user interface influences traffic and sales

Given the resources needed to launch a retail store on the Internet or change an existing online storefront design, it is important to allocate product development resources to interface features that actually improve store traffic and sales. We identified features that impact store traffic and sales using regression models of 1996 store traffic and dollar sales as dependent variables and interface design features such as number of links into the store, hours of promotional ads, number of products, and store navigation features as the independent variables. Product list navigation features that reduce the time to purchase products online account for 61% of the variance in monthly sales. Other factors explaining the variance in monthly sales include: number of hyperlinks into the store (10%), hours of promotion (4%) and customer service feedback (1%). These findings demonstrate that the user interface is an essential link between the customer and the retail store in Web-based shopping environments.

On-Ground Vehicle Navigation Using Satellite Navigation Equipment

The problems are considered of a modelling research of navigation features and improvement of the navigating filters algorithms used in the navigating devices of ground mobile vehicles (MV). It is supposed that the methods and approaches known as real time kinematic (RTK) are incorporated in a basis of researched navigating devices and algorithms. Thus, the measurements from satellite navigating systems such as GLONASS/GPS, and also the measurements from other traditional measuring means (tactile sensors, steering wheel angle and/or inertial measuring instruments) are used in the navigating device of the MV. In the present report we solve the problems and describe the methods of a modeling research of the features of functional units algorithms of the MV navigating processor with account of a satellite navigation set integration with other measuring instruments. The improvement of these devices interaction is made by means of the computer complex "AutoMobil," allowing us to simulate the certain conditions of these navigating tools operation. The imitation computer complex "AutoMobil" for researches of the MV navigation is developed within the frameworks of a programming environment "Delphi-7".

Development of a Computer Assisted Dietary Assessment Tool for use in Primary Healthcare Practice: Perceptions of Nutrition and Computers in a Sample of Older Adults with Type 2 Diabetes Mellitus

As part of a larger study developing dietary software, this study aims to evaluate a sample of potential users for their experience and comfort with computers, and assess the preferred program design and navigation features for the development of the automated diet history interview. A telephone-based questionnaire and focus groups were employed to evaluate the perceptions, beliefs and attitudes of 37 older adults with type 2 diabetes mellitus. Participants were also shown a range of existing dietary assessment programs and asked to state their perceptions of each. Data was coded and thematically analysed based on computer use, software features, dietary assessment and nutrition programs using N-Vivo software. Three participants had never used a computer, yet others had used computers, and were comfortable using them. For navigation about the program, a preference toward text was identified whilst photographs were preferred for determining food portion sizes. Reduction in the complexity of screen layouts was important and the time to be spent using the program varied widely with a minimum of 10 minutes reported. Development of the computerised dietary assessment program must ensure simplicity of the interface design and flexibility of the locations of use for the older computer user.

An enhanced Java graph applet interface for visualizing interactomes

We have developed several new navigation features for a Java graph applet previously released for visualizing protein-protein interactions. This graph viewer can be used to navigate any molecular interactome dataset. We have successfully implemented this tool for exploring protein networks stored in the Bioverse interaction database. http://bioverse.compbio.washington.edu/viewer ram@compbio.washington.edu.

Development of an interactive computer-assisted instruction (ICAI) program for patient prenatal genetic screening and carrier testing for use in clinical settings

Educating patients on prenatal genetic screening and carrier testing in a timely and effective manner is faced with barriers including, providers’ limited knowledge, and little time available to spend discussing screening and testing during a visit. This paper describes the use of cognitive response interviews (CRI) and usability testing (UT) in the development of an interactive computer assisted instruction (ICAI) program for use by prenatal patients in clinical settings. Lessons learned during the program development process included simplification of content and adaptation of navigational features in response to observations and interviews of a sample of patients representing the intended population. The resulting program functions as a targeted patient education program that maintains the level of medical information needed, as specified by professional practices guidelines, in a patient friendly format. In addition, this ICAI program functions as a research tool that can collect data on program effectiveness. Researchers developing other patient education programs will benefit from the lessons learned during development of this ICAI program by considering rephrasing of content to fit patient understanding, and adding navigational features to help further facilitate effective program use.

Combining different standards and different approaches for health information retrieval in a quality-controlled gateway

Internet as source of information is increasing in preeminence in numerous fields, including health. We describe in this paper the CISMeF project (acronym of Catalogue and Index of French-speaking Medical Sites) which has been designed to help the health information consumers and health professionals to find what they are looking for among the numerous health documents available online. The catalogue is founded on two standards: a set of metadata and a terminology based on the MeSH thesaurus which has the same structure and use as an ontology of the medical domain. The structure of the catalogue allows us to place the project at an overlap between the present Web, which is informal, and the forthcoming Semantic Web. Many features of information retrieval and navigation through the catalogue were developed. These features take into account the kind of the end-user (health professional, medical student, patient). The CISMeF-patients catalogue is a sub-catalogue of CISMeF and is dedicated to the patients and the general public. It shares the same model as CISMeF whereas MEDLINE and MedlinePlus do not. We also propose to couple two approaches (morphological processing and data mining) to help the users by correcting and refining their queries.