The EnMAP user interface and user request scenarios

EnMAP (Environmental Mapping and Analysis Program) is a German hyperspectral satellite mission providing high quality hyperspectral image data on a timely and frequent basis. Main objective is to investigate a wide range of ecosystem parameters encompassing agriculture, forestry, soil and geological environments, coastal zones and inland waters. The EnMAP Ground Segment will be designed, implemented and operated by the German Aerospace Center (DLR). The Applied Remote Sensing Cluster (DFD) at DLR is responsible for the establishment of a user interface. This paper provides details on the concept, design and functionality of the EnMAP user interface and a first analysis about potential user scenarios. The user interface consists of two online portals. The EnMAP portal (www.enmap.org) provides general EnMAP mission information. It is the central entry point for all international users interested to learn about the EnMAP mission, its objectives, status, data products and processing chains. The EnMAP Data Access Portal (EDAP) is the entry point for any EnMAP data requests and comprises a set of service functions offered for every registered user. The scientific user is able to task the EnMAP HSI for Earth observations by providing tasking parameters, such as area, temporal aspects and allowed tilt angle. In the second part of that paper different user scenarios according to the previously explained tasking parameters are presented and discussed in terms of their feasibility for scientific projects. For that purpose, a prototype of the observation planning tool enabling visualization of different user request scenarios was developed. It can be shown, that the number of data takes in a certain period of time increases with the latitude of the observation area. Further, the observation area can differ with the tilt angle of the satellite. Such findings can be crucial for the planning of remote sensing based projects, especially for those investigating ecosystem gradients in the time domain

ADAPTIVE USER INTERFACE BASED ON EYE TRACKING

An adaptive user interface system can be used to dynamically adapt a graphical user interface (GUI) for a user. The system is based on the observed ability of the user to focus on various GUI elements presented on the interface. The system is comprised of two subsystems, an eye tracking module and an interface adapter. The eye tracking module captures successive images of user’s eye focus locations on the interface over a predefined time period. The module then determines a set of interface locations most focussed on by the user and transmits them to the interface adapter. The interface adapter adapts or realigns the graphical user interface according to the received focussed locations

The development of a computer human interface using touch input for point of sale applications : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Product Development at Massey University

This project developed a touch screen interface for a new generation EFTPOS sales terminal at the fuel pump in a service station. Scenario plans and creative observation of consumers and analysis of their expressed needs, wants, and requirements were developed within the context of the client's specifications. This enabled the production of a physical and graphical user interface that provided initial appeal, ease of learning, high speed of user task performance, low user error rate, subjective user satisfaction, and user retention over time. Using multimedia computer software as a rapid prototyping tool enabled realistic feedback to be obtained early in the development stages and facilitated the modification of prototypes to minimise the barriers to potential consumer acceptance. The designer was able to effectively communicate the goals and details of the product to the team implementing the design using flow charts and diagrams to define the structure and content of the interface. The process used to develop the interface was compared with published product development techniques that incorporated consumer testing checkpoints throughout the discrete phases of product creation. It was determined that the generic processes were useful in practice, but only if the checkpoints were chosen appropriately and the tests customised for the developing product. Testing at fixed stages in the design process was found to be detrimental to the project. Putting excessive emphasis on the testing of the product curbed creativity by removing valid solutions before they could be investigated fully. The touch screen interface developed will be used to lead customers through fuel deliveries, Electronic Funds Transfer (EFT) transactions, and the purchase of other service station related products and services. The interface allows incorporation of advertising and customisation for use in other countries, meets the company's specifications, and has polled well in consumer tests when incorporated in a simulated mounting

GUI generation based on language extensions: a model to generate GUI, based on source code with custom attributes

Due to data-driven application nature and its increasing complexity, developing its user interface can be a repetitive and time-consuming activity. Consequently, developers tend to focus more on the user interface aspects and less on business related code. In this paper, we’re presenting an alternative approach to graphical user interface development for data-driven applications, that allows developers to refocus on the source code and concentrate their efforts on application core logic. The key concept behind our approach is the generation of concrete graphical user interface from a source code based model, which includes the original source code metadata and non-intrusive declarative language extensions that describes the user interface structure. Concrete user interface implementation will be delegated to specialized software packages, developed by external entities, that provides complete graphical user interfaces services to the application. When applying our approach, we’re expecting faster graphical user interface development

Exploring Digital Elements for Visualizing Time in Personal Information Re-finding

Psychological theories on memory of time suggest that people naturally remember ‘events’ rather than the ‘dates’ and ‘hours’. These features are, however, usually required by computer applications for desktop search (information re-finding) tasks. This explains why ‘time’ features are not well remembered for desktop search, as reported in some studies. In order to improve on this situation, we proposed our iCLIPS browser interface, which enables user re-fining initial search results using a suggestive timeline, where visualization elements representing landmark events and important computer activities were displayed. These visual elements on the time line were expected to act as episodic memory cues to help users recollect their search target by recognizing their episodic context. This interface is built on top of a personal search engine providing a unified index of all the information a user has encountered or created, such as documents, web pages, email, and personal photos. We present a pilot study to explore the types of these visual. The result and suggestions for future main study were discussed