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Physical Sciences and Mathematics Commons™
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Articles 1 - 30 of 244
Full-Text Articles in Physical Sciences and Mathematics
Analisis Desain Website Terhadap Budaya Pendekatan Teori Hofstede, Amelia Fauziah Husna
Analisis Desain Website Terhadap Budaya Pendekatan Teori Hofstede, Amelia Fauziah Husna
Elinvo (Electronics, Informatics, and Vocational Education)
Penelitian ini bertujuan untuk mengetahui pengaruh kebudayaan terhadap desai suatu website dan mengetahui budaya apakah yang berkembang di daerah tersebut melalui desai websitenya. Metode yang digunakan adalah studi kasus. Variabel yang digunakan ada 5, sesuai dengan Teori Hofstede, yaitu Power Distance (Jarak Kekuasaan), Indivialism vs Collectivism (Individualisme vs Kolektivisme), Masculinity vs Femininity (Maskulinitas vs Feminitas), Uncertainty Avoidance (Penghindaran terhadap Ketidakpastian), dan Long Term Orientation vs Short Term Normative (Orientasi Jangka Panjang vs Orientasi Normatif Jangka Pendek. Penelitian ini membandingkan tiga website yang berasal dari tiga negara yang berbeda, bahkan benua yang berbeda. Hasilnya terdapat perbedaan desain website yang dipengaruhi oleh …
Spatial 2015, Werner Kuhn, Matt Duckham, Marcia Castro
Spatial 2015, Werner Kuhn, Matt Duckham, Marcia Castro
Journal of Spatial Information Science
This report summarizes the first in a new series of interdisciplinary unconferences, called SPATIAL. SPATIAL 2015 was focused on applying spatial information to human health, and was held at the Center for Spatial Studies at the University of California, Santa Barbara, 9-11 December 2015.
Spatial Refinement As Collection Order Relations, Zhong Zhao
Spatial Refinement As Collection Order Relations, Zhong Zhao
Journal of Spatial Information Science
An abstract examination of refinement (and conversely, coarsening) with respect to the involved spatial relations gives rise to formulated order relations between spatial coverings, which are defined as complete-coverage representations composed of regional granules. Coverings, which generalize partitions by allowing granules to overlap, enhance hierarchical geocomputations in several ways. Refinement between spatial coverings has underlying patterns with respect to inclusion—formalized as binary topological relations—between their granules. The patterns are captured by collection relations of inclusion, which are obtained by constraining relevant topological relations with cardinality properties such as uniqueness and totality. Conjoining relevant collection relations of equality and proper inclusion …
Routes Visualization: Automated Placement Of Multiple Route Symbols Along A Physical Network Infrastructure, Jules Teulade-Denantes, Adrien Maudet, Cécile Duchêne
Routes Visualization: Automated Placement Of Multiple Route Symbols Along A Physical Network Infrastructure, Jules Teulade-Denantes, Adrien Maudet, Cécile Duchêne
Journal of Spatial Information Science
This paper tackles the representation of routes carried by a physical network infrastructure on a map. In particular, the paper examines the case where each route is represented by a separate colored linear symbol offset from the physical network segments and from other routes---as on public transit maps with bus routes offset from roads. In this study, the objective is to automate the placement of such route symbols while maximizing their legibility, especially at junctions. The problem is modeled as a constraint optimization problem. Legibility criteria are identified and formalized as constraints to optimize, while focusing on the case of …
Invariant Spatial Information In Sketch Maps — A Study Of Survey Sketch Maps Of Urban Areas, Jia Wang, Angela Schwering
Invariant Spatial Information In Sketch Maps — A Study Of Survey Sketch Maps Of Urban Areas, Jia Wang, Angela Schwering
Journal of Spatial Information Science
It is commonly recognized that free-hand sketch maps are influenced by cognitive impacts and therefore sketch maps are incomplete, distorted, and schematized. This makes it difficult to achieve a one-to-one alignment between a sketch map and its corresponding geo-referenced metric map. Nevertheless, sketch maps are still useful to communicate spatial knowledge, indicating that sketch maps contain certain spatial information that is robust to cognitive impacts. In existing studies, sketch maps are used frequently to measure cognitive maps. However, little work has been done on invariant spatial information in sketch maps, which is the information of spatial configurations representing correctly the …
Development And Evaluation Of A Geographic Information Retrieval System Using Fine Grained Toponyms, Damien Palacio, Curdin Derungs, Ross S. Purves
Development And Evaluation Of A Geographic Information Retrieval System Using Fine Grained Toponyms, Damien Palacio, Curdin Derungs, Ross S. Purves
Journal of Spatial Information Science
Geographic information retrieval (GIR) is concerned with returning information in response to an information need, typically expressed in terms of a thematic and spatial component linked by a spatial relationship. However, evaluation initiatives have often failed to show significant differences between simple text baselines and more complex spatially enabled GIR approaches. We explore the effectiveness of three systems (a text baseline, spatial query expansion, and a full GIR system utilizing both text and spatial indexes) at retrieving documents from a corpus describing mountaineering expeditions, centred around fine grained toponyms. To allow evaluation, we use user generated content (UGC) in the …
Data To Decisions For Cyberspace Operations, Steve Stone
Data To Decisions For Cyberspace Operations, Steve Stone
Military Cyber Affairs
In 2011, the United States (U.S.) Department of Defense (DOD) named cyberspace a new operational domain. The U.S. Cyber Command and the Military Services are working to make the cyberspace environment a suitable place for achieving national objectives and enabling military command and control (C2). To effectively conduct cyberspace operations, DOD requires data and analysis of the Mission, Network, and Adversary. However, the DOD’s current data processing and analysis capabilities do not meet mission needs within critical operational timelines. This paper presents a summary of the data processing and analytics necessary to effectively conduct cyberspace operations.
Describing Images Using A Multilayer Framework Based On Qualitative Spatial Models, Tao Wang, Hui Shi
Describing Images Using A Multilayer Framework Based On Qualitative Spatial Models, Tao Wang, Hui Shi
Baltic International Yearbook of Cognition, Logic and Communication
To date most research in image processing has been based on quantitative representations of image features using pixel values, however, humans often use abstract and semantic knowledge to describe and analyze images. To enhance cognitive adequacy and tractability, we here present a multilayer framework based on qualitative spatial models. The layout features of segmented images are defined by qualitative spatial models which we introduce, and represented as a set of qualitative spatial constraints. Assigned different semantic and context knowledge, the image segments and the qualitative spatial constraints are interpreted from different perspectives. Finally, the knowledge layer of the framework enables …
Stability Condition Of A Retrial Queueing System With Abandoned And Feedback Customers, Amina A. Bouchentouf, Abbes Rabhi, Lahcene Yahiaoui
Stability Condition Of A Retrial Queueing System With Abandoned And Feedback Customers, Amina A. Bouchentouf, Abbes Rabhi, Lahcene Yahiaoui
Applications and Applied Mathematics: An International Journal (AAM)
This paper deals with the stability of a retrial queueing system with two orbits, abandoned and feedback customers. Two independent Poisson streams of customers arrive to the system, and flow into a single-server service system. An arriving one of type i; i = 1; 2, is handled by the server if it is free; otherwise, it is blocked and routed to a separate type-i retrial (orbit) queue that attempts to re-dispatch its jobs at its specific Poisson rate. The customer in the orbit either attempts service again after a random time or gives up receiving service and leaves the system …
Analysis Of Repairable M[X]/(G1,G2)/1 - Feedback Retrial G-Queue With Balking And Starting Failures Under At Most J Vacations, P. Rajadurai, M. C. Saravanarajan, V. M. Chandrasekaran
Analysis Of Repairable M[X]/(G1,G2)/1 - Feedback Retrial G-Queue With Balking And Starting Failures Under At Most J Vacations, P. Rajadurai, M. C. Saravanarajan, V. M. Chandrasekaran
Applications and Applied Mathematics: An International Journal (AAM)
In this paper, we discuss the steady state analysis of a batch arrival feedback retrial queue with two types of service and negative customers. Any arriving batch of positive customers finds the server is free, one of the customers from the batch enters into the service area and the rest of them join into the orbit. The negative customer, arriving during the service time of a positive customer, will remove the positive customer in-service and the interrupted positive customer either enters into the orbit or leaves the system. If the orbit is empty at the service completion of each type …
Group Decision Making Using Comparative Linguistic Expression Based On Hesitant Intuitionistic Fuzzy Sets, Ismat Beg, Tabasam Rashid
Group Decision Making Using Comparative Linguistic Expression Based On Hesitant Intuitionistic Fuzzy Sets, Ismat Beg, Tabasam Rashid
Applications and Applied Mathematics: An International Journal (AAM)
We introduce a method for aggregation of experts’ opinions given in the form of comparative linguistic expression. An algorithmic form of technique for order preference is proposed for group decision making. A simple example is given by using this method for the selection of the best alternative as well as ranking the alternatives from the best to the worst.
The Role Of Cryptography In Security For Electronic Commerce, Ann Murphy, David Murphy
The Role Of Cryptography In Security For Electronic Commerce, Ann Murphy, David Murphy
The ITB Journal
Many businesses and consumers are wary of conducting business over the Internet due to a perceived lack of security. Electronic business is subject to a variety of threats such as unauthorised access, misappropriation, alteration and destruction of both data and systems. This paper explores the major security concerns of businesses and users and describes the cryptographic techniques used to reduce such risks.
A Context-Aware Model To Improve Usability Of Information Display On Smartphone Apps For Emerging Users, Felix F. Ntawanga, Andre P. Calitz, Lynette Barnard
A Context-Aware Model To Improve Usability Of Information Display On Smartphone Apps For Emerging Users, Felix F. Ntawanga, Andre P. Calitz, Lynette Barnard
The African Journal of Information Systems
Smartphones have become a reliable technology for accessing information and services in rural communities. Mobile applications, such as social media and news apps running on smartphones, are no longer exclusively utilised by users in developed communities. Mobile applications are accessed in highly contextualised environments. This paper discusses a context-aware model that was implemented to improve the usability of information presented on smartphone applications for emerging users. User evaluation was conducted within a remote area in South Africa with a sample of users, most of whom did not have prior experience in using computer applications. The results of the evaluation present …
Usability Of Error Messages For Introductory Students, Paul A. Schliep
Usability Of Error Messages For Introductory Students, Paul A. Schliep
Scholarly Horizons: University of Minnesota, Morris Undergraduate Journal
Error messages are an important tool programmers use to help find and fix mistakes or issues in their code. When an error message is unhelpful, it can be difficult to find the issue and may impose additional challenges in learning the language and concepts. Error messages are especially critical for introductory programmers in understanding problems with their code. Unfortunately, not all error messages in programming are beneficial for novice programmers. This paper discusses the general usability of error messages for introductory programmers, analyses of error messages in compilers and DrRacket, and two methodologies intended to improve error handling.
Infotainment Interface Design For Automobiles, Ian R. Buck
Infotainment Interface Design For Automobiles, Ian R. Buck
Scholarly Horizons: University of Minnesota, Morris Undergraduate Journal
In an increasingly connected, mobile world, situations where users do not interact with their digital lives are becoming few and far between. This can be a problem in situations that demand a user's attention for their safety. Driving is one such situation, and it is doubly important because a significant portion of the western population drives on a daily basis. Researchers have tested different interface designs with the goal of finding one that demands the least cognitive load while still allowing the user to perform the desired task efficiently. In this paper interfaces incorporating auditory cues, voice dictation, and air …
Fall 2015
In The Loop
Five minutes with Dean Miller; Snapshot: Enrollment trends; Behind the scenes at MayDay 2015; From class to career and back again; The intern files; Comedy in the classroom; Study abroad program bridges technology and business; Seen and heard; Alumni advice from Bill Gloff; The multimedia afterlife of Sherlock Holmes and related pursuits
Large-Scale And High-Resolution 3-D Cave Mapping By Terrestrial Laser Scanning: A Case Study Of The Domica Cave, Slovakia, Michal Gallay, Ján Kaňuk, Zdenko Hochmuth, John D. Meneely, Jaroslav Hofierka, Vladimír Sedlák
Large-Scale And High-Resolution 3-D Cave Mapping By Terrestrial Laser Scanning: A Case Study Of The Domica Cave, Slovakia, Michal Gallay, Ján Kaňuk, Zdenko Hochmuth, John D. Meneely, Jaroslav Hofierka, Vladimír Sedlák
International Journal of Speleology
Mapping and modelling the complicated geometry of caves is a challenging task that has traditionally been undertaken by tacheometric surveying methods. These methods are excellent for capturing the general shape of a cave system but they are not suitable for high-speed, high-resolution mapping of complex surfaces found in this environment. Terrestrial laser scanning (TLS) technologies can acquire millions of points represented by 3-D coordinates, at very high spatial densities on complex multifaceted surfaces within minutes. In the last few years, advances in measurement speed, reduction in size / cost and increased portability of this technology has revolutionised the collection of …
Amiens Cathedral: City Of God, Dennis West, Dr. Seth Holladay
Amiens Cathedral: City Of God, Dennis West, Dr. Seth Holladay
Journal of Undergraduate Research
What was it like to visit a gothic cathedral in the thirteenth century? That is the question that is explored in Amiens Cathedral: City of God. The purpose of this project was to illustrate the experience a medieval citizen of Amiens would have had upon visiting the Cathedral of Amiens. This was accomplished through researching dimensions and original construction of the cathedral, and illustrating how the stained glass and other art accentuates the sermons presented.
Visualizing Patterns In Spatially Ambiguous Point Data, Jonny Huck, Duncan Whyatt, Paul Coulton
Visualizing Patterns In Spatially Ambiguous Point Data, Jonny Huck, Duncan Whyatt, Paul Coulton
Journal of Spatial Information Science
As technologies permitting both the creation and retrieval of data containing spatial information continue to develop, so do the number of visualizations using such data. This spatial information will often comprise a place name that may be "geocoded" into coordinates, and displayed on a map, frequently using a "heatmap-style" visualization to reveal patterns in the data. Across a dataset, however, there is often ambiguity in the geographic scale to which a place-name refers (country, county, town, street etc.), and attempts to simultaneously map data at a multitude of different scales will result in the formation of "false hotspots" within the …
Knowledge Formalization For Vector Data Matching Using Belief Theory, Ana-Maria Olteanu-Raimond, Sebastien Mustière, Anne Ruas
Knowledge Formalization For Vector Data Matching Using Belief Theory, Ana-Maria Olteanu-Raimond, Sebastien Mustière, Anne Ruas
Journal of Spatial Information Science
Nowadays geographic vector data is produced both by public and private institutions using well defined specifications or crowdsourcing via Web 2.0 mapping portals. As a result, multiple representations of the same real world objects exist, without any links between these different representations. This becomes an issue when integration, updates, or multi-level analysis needs to be performed, as well as for data quality assessment. In this paper a multi-criteria data matching approach allowing the automatic definition of links between identical features is proposed. The originality of the approach is that the process is guided by an explicit representation and fusion of …
A Comparative Study Of Linear And Region Based Diagrams, Björn Gottfried
A Comparative Study Of Linear And Region Based Diagrams, Björn Gottfried
Journal of Spatial Information Science
There are two categories of objects spatial information science investigates: actual objects and their spatial properties, such as in geography, and abstract objects which are employed metaphorically, as for visual languages. A prominent example of the latter are diagrams that model knowledge of some domain. Different aspects of diagrams are of interest, including their formal properties or how human users work with them, for example, with diagrams representing sets. The literature about diagrammatic systems for the representation of sets shows a dominance of region-based diagrams like Euler circles and Venn diagrams. The effectiveness of these diagrams, however, is limited because …