Search results for "Hard"
showing 10 items of 2294 documents
Model independent assertions for integration of heterogeneous schemas
1992
Due to the proliferation of database applications, the integration of existing databases into a distributed or federated system is one of the major challenges in responding to enterprises' information requirements. Some proposed integration techniques aim at providing database administrators (DBAs) with a view definition language they can use to build the desired integrated schema. These techniques leave to the DBA the responsibility of appropriately restructuring schema elements from existing local schemas and of solving inter-schema conflicts. This paper investigates the assertion-based approach, in which the DBA's action is limited to pointing out corresponding elements in the schemas an…
Bridging the Gap between Advanced Distributed Teaching and the Use of Learning Management Systems in the University Context
2007
The selection of appropriate learning management system (LMS) is critical for supporting advanced distributed teaching. A survey was targeted for understanding the features that the LMS offer for university teachers and to find if the advanced features of the LMS were utilized, The findings imply that there is a gap between the LMS tools for advanced distributed teaching and their use in the university context. The teachers using LMS were also found to be heterogeneous by their computer skills and LMS uses.
Improving situation awareness in crisis response teams
2016
In responding to an emergency, the actions of emergency response teams critically depend upon the situation awareness the team members have acquired. Situation awareness, and the design of systems to support it, has been a focus in recent emergency management research. In this paper, we introduce two interventions to the core processes of information processing and information sharing in emergency response teams to analyze their effect on the teams' situation awareness: (1) we enrich raw incoming information by adding a summary of the information received, and (2) we channel all incoming information to a central coordinator who then decides upon further distribution within the team. The eff…
Understanding cloud computing adoption issues: A Delphi study approach
2016
An exploratory ranking-type Delphi study and follow-up interviews were conducted.Important cloud computing adoption issues are identified, categorized and ranked.Three subpanels top-ranked issues from security, strategy and legal categories.A framework of inhibitors and drivers for cloud computing adoption is proposed.Recommendations to assist decision-makers in cloud computing adoption are proposed. This research paper reports on a Delphi study focusing on the most important issues enterprises are confronted with when making cloud computing (CC) adoption decisions. We had 34 experts from different domain backgrounds participated in a Delphi panel. The panelists were IT and CC specialists r…
Managing information security in a business network of machinery maintenance services business – Enterprise architecture as a coordination tool
2007
Today, technologies enable easy access to information across organizational boundaries, also to systems of partners in business networks. This raises, however, several complex research questions on privacy, information security and trust. The study reported here provides motivation and a roadmap for approaching integrated security management solutions in a business network of partners with heterogeneous information and communication technologies (ICT): Systems, platforms, infrastructures as well as security policies. Enterprise architecture (EA) is proposed as a means for comprehensive and coordinated planning and management of corporate ICT and the security infrastructure. The EA approach …
Uncertainty in information system development: Causes, effects, and coping mechanisms
2020
Information system development (ISD) projects are an ever-growing field of project management (PM) with their unique features, and project failures in ISD are relatively common. In the broader context of PM, uncertainty is a studied, yet mercurial phenomenon. By contrast, uncertainty in ISD projects has received relatively little attention from scholars, and PM literature has not systematically focused on uncertainty in ISD from a viewpoint other than that of project managers. In order to understand uncertainties in ISD projects, we need to first understand the causes behind them, their effects on everyday ISD work, and share coping mechanisms utilized among industry professionals. In the c…
Meanings of communication technology in virtual team meetings : framing technology-related interaction
2018
Communication technology is an essential part of virtual teams in working life. This article presents a qualitative study on the meanings of communication technology in virtual team meetings. The study was conducted by examining frames of technology-related virtual team interaction. Observational data was gathered from six expert team meetings. Technology-related communication episodes (N = 88) were identified from team interaction and then analyzed by means of frame analysis. Four frame categories were found: the practical frame, work frame, user frame, and relational frame. Team members talked about technological properties and functions as well as giving and receiving technological guida…
FCA-based knowledge representation and local generalized linear models to address relevance and diversity in diverse social images
2019
Abstract In social image retrieval, the main goal is to offer a relevant but also diverse result set of images to the user. To address relevance and diversity at the same time, we propose a multi-modal procedure. This approach deals with the diversification problem using a two-step procedure based on the application of Formal Concept Analysis (FCA) to organize the text content of the images, followed by a Hierarchical Agglomerative Clustering (HAC) step to find the topics addressed by the images. FCA detects the latent concepts covered by the images in the result set, organizing them according to these concepts. In the second step, clustering is carried out to group together the ones with a…
Zvaigžņotā Debess: 2000, Pavasaris (167)
2000
Contents: P.Müürsepp. B.Schmidt, Prominent Optician of 20th Century ; J.Miezis. Buildings on the Moon ; Z.Alksne, A.Alksnis. Stars Enshrouded in Envelopes ; A.Alksnis. Goals and Progress of the DENIS Program ; Z.Alksne. Shapley Supercluster – Playground of Clusters of Galaxies ; A.Alksnis. Wide Field Imager Discovers Distant Galaxies ; J.Jaunbergs. Roton SSTO: First Flight Tests ; M.Gills. Space Research 40 Years Ago – Chronicle ; I.Vilks. The Secret of Low-Probability Complexity in the Universe ; K.Bērziņš. On Friendly Terms with Cosmology: Development of Cosmological Views (concluded) ; A.Balklavs. Astronomy in the Internet (WWW) ; V.Flerov, A.Cēbers. Latvia 23rd Open Olympiad of Physics:…
Zvaigžņotā Debess: 2001, Rudens (173)
2001
Contents: G.Ozoliņš. Radio-Locators Investigate Solar System ; U.Dzērvītis. First Radio Star Discovered ; J.Āboliņš. Science, Dinosaurs and Evolution: Cosmos and Life on Earth ; Z.Alksne, A.Alksnis. Our Galaxy Swallows Its Companions ; A.Balklavs. New Data on Massive Objects in the Galactic Cores ; A.Balklavs. Actualities of Investigations of Dwarf Galaxies ; Z.Alksne. The Web of the Early Universe Primordial Filaments ; M.Gertāns. NEAR Mission Successfully Completed ; I.Vilks. Spaceflight. Almost Everyday Life (1973-2000) (concluded) ; J.Jaunbergs, D.Meldere. Mr. Tito’s Great Space Adventure ; N.Cimahoviča, A.Balklavs. Radio Astronomy in Latvia. How It All Happened ; J.Jansons. First Unive…