TY - CONF T1 - Interactive Network Visualization of Educational Standards, Learning Resources and Learning Progressions T2 - Proceedings IV2023 - 27th International Conference on Information Visualisation Y1 - 2023 A1 - Reitsma,Reindert A1 - Hoglund,Brian A1 - Achatz,Nikolas A1 - Marks,Andrea KW - BIS KW - Design Program AB - We present a novel, network- and browser-based visualization of the Next Generation Science Standards (NGSS). The NGSS are meant to guide (USA) K-12 science and engineering learning and are almost always presented using text and tables. Their connectivity, however, lends them well for network modeling and interactive network visualization.

JA - Proceedings IV2023 - 27th International Conference on Information Visualisation U2 - b U4 - 256122902528 ID - 256122902528 ER - TY - ADVS T1 - NGSS Explorer (Curriculum Network Visualization) Y1 - 2022 A1 - Reitsma,Reindert A1 - Hoglund,Brian A1 - Achatz,Nikolas KW - BIS UR - https://www.teachengineering.org/ngss_explorer U2 - d U4 - 253092712448 ID - 253092712448 ER - TY - BOOK T1 - A Tale of Two Systems. A Review of the architecting and re-architecting of a long-lived website; (2nd edition) Y1 - 2022 A1 - Reitsma,Reindert A1 - Krueger,Kevin KW - BIS UR - https://open.oregonstate.education/taleoftwosystems/ U2 - d U4 - 158829608960 ID - 158829608960 ER - TY - CHAP T1 - Breadcrumbs Y1 - 2021 A1 - Reitsma,Reindert KW - BIS AB - Reflections on the work and contributions of Dr. Paul Hendriks, Professor of Knowledge Management at Radboud University, Nijmegen, The Netherlands. CY - Nijmegen U2 - d U4 - 233150005248 ID - 233150005248 ER - TY - CONF T1 - K-12 Engineering and the Next Generation Science Standards (NGSS): A Network Visualization and Analysis T2 - American Society for Engineering Education (ASEE) Y1 - 2020 A1 - Reitsma,Reindert A1 - Hoglund,Brian A1 - Marks,Andrea A1 - Chaker,Dua A1 - Marks,Andrea KW - BIS KW - Design Program AB - We present an interactive network visualization of the Next Generation Science Standards (NGSS) and its coverage by collections of aligned curriculum. The visualization presents an alternative to the usual presentation of the NGSS as a set of linked tables. Users can view entire grade bands, search for or drill down to the level of individual NGSS standards or curricular items, or display groups of standards across grade bands. NGSS-aligned curriculum collections can be switched on and off to visually explore their NGSS coverage. Viewing the NGSS and associated curriculum this way facilitates navigating the NGSS and can help with assessment of alignments as lacking or anomalous. Modeling the NGSS as a network also allows for the computation of network metrics to provide insight into core characteristics of the network. It also provides for detecting anomalies and unexpected patterns. JA - American Society for Engineering Education (ASEE) UR - https://strategy.asee.org/k-12-engineering-and-the-next-generation-science-standards-a-network-visualization-and-analysis-resource-exchange U2 - b U4 - 202185967616 ID - 202185967616 ER - TY - JOUR T1 - The Future of Data: Too Much Visualization — Too Little Understanding? JF - Dialectic Y1 - 2019 A1 - Reitsma,Reindert A1 - Marks,Andrea KW - BIS KW - Design Program AB - Data is part of our lives. Information visualizations help us make sense of this data and possibly help us make changes because of it. In this paper, however, we estimate some of the consequences of what seems an ominous trend, namely the needless complication and beautification of such visualizations. We argue that with increased availability of data and ever more powerful and easy to use visualization software, it becomes easy to succumb to the temptation to impress rather than to communicate. And so we wonder: is a future filled with visualizations that are visually complex and stunning, yet fail to properly communicate the data emerging? To assess some of the consequences of this practice we selected five examples from published sources, developed far simpler (and less attractive) versions from the identical data, randomly exposed these visualizations to subjects and asked simple questions about the displayed data. We find that, on average, it takes subjects longer to comprehend the complex versions, that it takes subjects longer to extract information from these versions and that they make more and larger errors doing so. The experiment shows that subjects eventually do learn how to navigate the complex versions, but by then they have spent significantly more time and made serious interpretative errors. VL - 2 UR - https://quod.lib.umich.edu/d/dialectic/14932326.0002.207?view=text;rgn=main CP - 2 U2 - a U4 - 161824772096 ID - 161824772096 ER - TY - CASE T1 - BA302: Microsoft Dynamics NAV ERP Exercise/Walkthrough Y1 - 2016 A1 - Curry,Michael A1 - Marshall,Byron A1 - Raja,V.T. A1 - Reitsma,Reindert A1 - Wydner,Kirk KW - Accounting KW - BIS AB - Whether you enter the workforce as a sales manager, financial accountant or office admin, chances are that you will be working with some type of Enterprise Resource Planning (ERP) system. The purpose of this exercise/walkthrough is to familiarize you with a typical business process as it is commonly executed with the help of one of the leading ERP systems in the market today – Microsoft Dynamics NAV. This exercise will walk you through the six steps of a typical sales process: 1) Creating a customer order; 2) Backordering an out-of-stock item; 3) Receiving the backordered item; 4) Shipping the customer the ordered items and invoicing the customer; 5) Receiving payment from the customer; 6) Making a payment to the vendor from whom we backordered. As you make your way through this exercise, you should realize that in a real company this process would be executed by different people working in different departments. They all will interact with the ERP; i.e., they all retrieve information from the ERP and store new information in it, as the sales process progresses. In this exercise you take on the role of each of these people, giving you a sense of how the sales order is processed both by the company and by the ERP. UR - http://hdl.handle.net/1957/59858 U2 - d U4 - 134050416640 ID - 134050416640 ER - TY - JOUR T1 - Map? or List?based Recommender Agents? Does the Map Metaphor Fulfill its Promise? JF - Information Visualization Y1 - 2016 A1 - Reitsma,Reindert A1 - Hsieh,Ping-Hung A1 - Diekema,Anne A1 - Robson,Robby A1 - Zarsky,Malinda KW - BIS KW - Supply Chain AB - We present a spatialization of digital library content based on item similarity and an experiment which compares the performance of this spatialization relative to a simple list-based display. Items in the library are K-12 science and engineering learning resources. Spatialization and visualization are accomplished through 2D interactive Sammon mapping of pairwise item similarity scores based on the joint occurrence of word bigrams. The 65 science teachers participating in the experiment were asked to search the library for curricular items they would consider using in conducting one or more teaching assignments. Results indicate that whereas the spatializations adequately capture the salient features of the library’s content and teachers actively use them, item retrieval rates, task-completion time and perceived utility do not significantly differ from the semantically poorer but easier to comprehend and navigate list-based representations. These results put into question the usefulness of the rapidly increasing supply of information spatializations. VL - 16 UR - http://journals.sagepub.com/doi/abs/10.1177/1473871616669193 U2 - a U4 - 127142455296 ID - 127142455296 ER - TY - CONF T1 - Unraveling K-12 Standard Alignment; Report on a New Attempt T2 - Joint Conference on Digital Libraries Y1 - 2016 A1 - Marshall,Byron A1 - Reitsma,Reindert A1 - Samson,Carleigh KW - Accounting KW - BIS AB - We present the results of an experiment which indicates that automated alignment of electronic learning objects to educational standards may be more feasible than previously implied. We highlight some important deficiencies in existing alignment systems and formulate suggestions for improved future ones. We consider how the changing substance of newer educational standards, a multi-faceted view of standard alignment, and a more nuanced view of the ‘alignment’ concept may bring the long-sought goal of automated standard alignment closer. We explore how lexical similarity of documents, a World+Method representation of semantics, and network-based analysis can yield promising results. We furthermore investigate the nature of false positives to better understand how validity of match is evaluated so as to better focus future alignment system development. JA - Joint Conference on Digital Libraries U2 - b U4 - 127038310400 ID - 127038310400 ER - TY - CONF T1 - Estimation and Visualization of Digital Library Content Similarities T2 - Intern. Conf. on Inf. Systems (ICIS) 2015 Y1 - 2015 A1 - Reitsma,Reindert A1 - Hsieh,Ping-Hung A1 - Robson,Robby KW - BIS KW - Supply Chain AB - We report on a process for similarity estimation and two-dimensional mapping of lesson materials stored in a Web-based K12 Science, Technology, Engineering and Mathematics (STEM) digital library. The process starts with automated removal of all information which should not be included in the similarity estimations followed by automated indexing. Similarity estimation itself is conducted through a natural language processing algorithm which heavily relies on bigrams. The resulting similarities are then used to compute a Sammon-map; i.e., a projection in n dimensions, the item-to-item distances of which best reflect the input similarities. In this paper we concentrate on specification and validation of this process. The similarity results show almost 100% precision-by-rank in the top three to five ranks. Sammon mapping in two dimensions corresponds well with the digital library‘s table of content. JA - Intern. Conf. on Inf. Systems (ICIS) 2015 U2 - b U4 - 105616928768 ID - 105616928768 ER - TY - CONF T1 - The Relevance of K-12 Engineering Curricula to NGSS: an Analysis of TeachEngineering-NGSS Alignments T2 - ASEE 2015 Annual Conference Y1 - 2015 A1 - Reitsma,Reindert A1 - Samson,Carleigh A1 - Soltys,Mike A1 - Sullivan,Jacquelyn KW - BIS AB - The 2013 publication of the Next Generation Science Standards (NGSS) provided the first widely adopted set of science standards to include engineering design throughout all K-12 grades. In doing so, NGSS raised the relevance of the K-12 engineering education sector on a national scale. The TeachEngineering digital library, representative of the K-12 engineering education sector through its collaboration of 36, mostly NSF-funded, K-12 engineering education programs across the US, recently aligned its 1,300+ K-12 engineering lessons and hands-on activities to the NGSS. This paper provides analysis of both the alignment process and its results. As such, we offer insight into the correspondence between the NGSS and a broad, collection of K-12 engineering learning objects and hence, into the mutual relevance of K-12 engineering curriculum and the NGSS. We also provide some recommendations for future K-12 engineering curriculum development. JA - ASEE 2015 Annual Conference U2 - b U4 - 105617211392 ID - 105617211392 ER - TY - HEAR T1 - Workshop: TeachEngineering Digital Library: Hundreds of Free, Searchable, NGSS-aligned Hands-on Engineering Lessons for K-12 Y1 - 2015 A1 - Reitsma,Reindert A1 - Zarske,Malinda A1 - Yowell,Janet A1 - Samson,Carleigh KW - BIS JA - ASEE Annual Conference 2015 CY - Seattle, WA U2 - c U4 - 102487447552 ID - 102487447552 ER - TY - HEAR T1 - Business Process Management Y1 - 2012 A1 - Reitsma,Reindert A1 - Van Patten,Mark A1 - Baker,Mark A1 - Coogan,Chris KW - BIS JA - 2012 Portland CIO Forum CY - Portland, OR U2 - c U4 - 63034542081 ID - 63034542081 ER - TY - JOUR T1 - Can Intermediary-based Science Standards Crosswalking Work? Some Evidence from Mining the Standard Alignment Tool (SAT) JF - Journal of the Association for Information Science and Technology Y1 - 2012 A1 - Reitsma,Reindert A1 - Marshall,Byron A1 - Chart,Trevor KW - Accounting KW - BIS AB - We explore the feasibility of intermediary-based crosswalking and alignment of K-12 science education standards. With increasing availability of K-12 science, technology, engineering and mathematics (STEM) digital library content, alignment of that content with educational standards is a significant and continuous challenge. Whereas direct, one-to-one alignment of standards is preferable but currently unsustainable in its resource demands, less resource-intensive intermediary-based alignment offers an interesting alternative. But will it work? We present the results from an experiment in which the machine-based Standard Alignment Tool (SAT) —incorporated in the National Science Digital Library (NSDL)— was used to collect over half a million direct alignments between standards from different standard-authoring bodies. These were then used to compute intermediary-based alignments derived from the well-known AAAS Project 2061 Benchmarks and NSES standards. Results show strong variation among authoring bodies in their success to crosswalk with best results for those who modeled their standards on the intermediaries. Results furthermore show a strong inverse relationship between recall and precision when both intermediates where involved in the crosswalking. VL - 63 UR - http://people.oregonstate.edu/~marshaby/Papers/ReitsmaMarshallChart_StandardsCrosswalking_JASIST2012.pdf U2 - a U4 - 43025678337 ID - 43025678337 ER - TY - CONF T1 - The TeachEngineering Digital Library: Improving Access to the P-12 Engineering Conversation T2 - Proceedings 2nd P-12 Engineering and Design Education Research Summit Y1 - 2012 A1 - Reitsma,Reindert A1 - Zarske,M. A1 - Sullivan,J. A1 - Klenk,P. A1 - Forbes,M. A1 - Carlson,D. KW - BIS AB - The TeachEngineering digital library is a collection of searchable, standards-based, classroom-tested P-12 engineering curricula for use in science and math classrooms (Sullivan et al., 2005). Its inquiry-based lessons and hands-on activities use real-life engineering as a vehicle for the integration of science and math in P-12 classrooms. Mapped to educational content standards, the activities are age-appropriate, inexpensive to conduct, and relevant to students’ daily lives, helping science and math come alive. The collection is a powerful resource for those in P-12 or higher education, industry and professional communities wanting to improve STEM literacy, to engage young students in the joys and creativity of engineering and the design process, and to increase the number of students pursuing STEM careers.
This paper investigates TeachEngineering usage trends and curricular submission statistics. Specifically, we analyze the submission process for curriculum contributed from external authors, suggest practices for submitting new curriculum, and discuss possible support avenues for future submissions. JA - Proceedings 2nd P-12 Engineering and Design Education Research Summit U2 - b U4 - 50961645568 ID - 50961645568 ER - TY - JOUR T1 - Comparison of Human and Machine-based Educational Standard Assignment Networks JF - International Journal on Digital Libraries Y1 - 2011 A1 - Reitsma,Reindert A1 - Diekema,Anne R KW - BIS AB - Increasing availability of digital libraries of K-12 curriculum resources, coupled with an increased emphasis on standard-based teaching necessitates assignment of the standards to the available curriculum. Since such assignment is a laborious and ongoing task, machine-based standard assignment tools have been under development for some time. Unfortunately, data on the performance of these machine-based classifiers are mostly lacking. In this paper we explore network modeling and layout to gain insight into the differences between human assignments and those by one of the better known machine-based classifiers. To build the standard assignment networks we define standards to be linked if they are jointly assigned to the same curricular item. Comparative analysis of the mapped networks shows that that unlike the machine-based assignment maps, the human-based maps elegantly reflect the rationales and principles of the assignment; i.e., clusters of standards separate along lines of lesson content and pedagogical principles. In addition, comparison of the maps clearly indicates that the machine classifier has trouble assigning so-called 'method' standards. VL - 11 U2 - a U4 - 26462951425 ID - 26462951425 ER - TY - JOUR T1 - Organizational Information Technology Norms and IT Quality JF - Communications of the IIMA Y1 - 2011 A1 - Marshall,Byron A1 - Curry,Michael A1 - Reitsma,Reindert KW - Accounting KW - BIS AB - The effectiveness of IT governance initiatives in improving IT’s contribution to organizational success has been demonstrated but the mechanisms by which improved outcomes are realized have largely remained unexplored. Although IT governance tools such as COBIT and ITIL specify procedures and policies for the management of IT resources, the experts who developed those tools also embedded a set of core principles or ‘norms’ in the underlying frameworks. This article explores these norms and their role in the realization of organizational IT quality. Through analysis of normative messages implicitly expressed in the documentation elements provided by COBIT, we extract two norms (commitment to improvement and a risk/control perspective) thought to indicate that an organization has adopted the spirit of IT governance. Next, we model the relationship between adoption of these norms and IT quality and evaluate the model with data from a survey of 86 individuals who use, manage, and/or deliver organizational IT services. Principal component analysis is used to validate the survey items. Results show statistically significant relationships between norm adoption, participation in norm-driven activities, and organizational IT quality. VL - 11 UR - http://www.iima.org/index.php?option=com_phocadownload&view=category&id=60:2011-volume-11-issue-4&Itemid=68 CP - 4 U2 - a U4 - 40795119617 ID - 40795119617 ER - TY - CONF T1 - World vs. Method: Educational Standard Formulation Impacts Document Retrieval T2 - Proceedings of the Joint Conference on Digital Libraries (JCDL'11),Ottawa, Canada. Y1 - 2011 A1 - Marshall,Byron A1 - Reitsma,Reindert KW - Accounting KW - BIS AB - Although initiatives are underway in the educational community to consolidate disparate collections of educational standards, little has been done to explore the impact of educational standard formulation on information retrieval. Recent research contrasts two categories of educational standards: ‘World’ (topical domain-related concepts) and ‘Method’ (investigative and epistemological principles). This paper explores the information retrieval implications of the World vs. Method distinction. We find that experts are more likely to agree about which educational resources align with a Method standard but that a typical automatic standard assignment tool is more likely to assign a World standard to an educational resource. Further, a text-based information retrieval system is more likely to be accurate in retrieving documents relevant to a World standard as compared to a Method standard. These findings have implications both for educational standard formulation (combining World and Method components in a standard may improve retrieval) and for digital library builders who want to help teachers identify useful, standards-aligned learning objects. JA - Proceedings of the Joint Conference on Digital Libraries (JCDL'11),Ottawa, Canada. U2 - b U4 - 33636190209 ID - 33636190209 ER - TY - CONF T1 - Are French Fries and Grades Bad for You? Conflicting Evidence on how K-12 Teachers Search in a K-12 Engineering Digital Library T2 - Am. Soc. of Engr. Education (ASEE) Annual Conf. 2010 Y1 - 2010 A1 - Reitsma,Reindert A1 - Klenk,P. A1 - Zarske,M. A1 - Sullivan,J. KW - BIS AB - The TeachEngineering digital library provides teacher-tested, standards-based engineering content for K-12 teachers to use in science and math classrooms. Since its release in 2005, it has demonstrated significant growth in users and in contributors; data on this growth is presented. The TeachEngineering team continues to research its search functions and user interface in order to ensure that it is meeting the needs of its intended users, K-12 teachers. Empirical evidence of an experimental study on the dimensions of alignment between digital K-12 lesson materials and education standards, however, contradicts that of the observed search behavior of patrons of TeachEngineering. Whereas the experiment convincingly shows that grade band information does not add to the teaching materials’ relevance for an educational standard, observed patrons’ searching patterns show ample evidence of grade band-based searches. In this paper we offer that although grade band-based searches should perhaps be avoided because they improperly bias search results, they are such a prominent feature in the actual use of the digital library that as designers we must support them while mitigating the risk of unfortunate search bias. As a possible solution we suggest supporting grade-based searches yet offering query expansion by widening the grade band. These results also imply that curriculum developers pay close attention to the assignment of grade bands to their lessons and activities. JA - Am. Soc. of Engr. Education (ASEE) Annual Conf. 2010 CY - Louisville, KY U2 - b U4 - 21031903233 ID - 21031903233 ER - TY - JOUR T1 - Aspects of 'Relevance' in the Alignment of Curriculum with Educational Standards JF - Information Processing & Management Y1 - 2010 A1 - Reitsma,Reindert A1 - Marshall,Byron A1 - Zarske,Malinda KW - Accounting KW - BIS AB - Retrieval of useful digitized learning objects is a key objective for educational digital libraries, but imprecise definitions of alignment hinder the development of effective retrieval mechanisms. With over 63,000 U.S. K-12 science and mathematics education standards and a rapid proliferation of Web-enabled curriculum, retrieving curriculum that aligns with the standards to which teachers must teach is increasingly important. Previous studies of such alignment use single-dimensional and binary measures of relevance. Perhaps as a consequence they suffer from low inter-rater reliability (IRR), with experts agreeing about alignments only some 20-40% of the time. We present the results of an experiment in which the dependent variable ‘alignment’ is operationalized using the Saracevic model of relevance in which; i.e., alignment is defined and measured through ‘clues’ from the everyday practice of K-12 teaching. Results show higher inter-rater reliability on all clues with significantly higher IRR on several specific alignment dimensions. In addition, a (linear) model of ‘overall alignment’ is derived and estimated. Both the structure and explanatory power of the model differ significantly between searching vs. assessment. These results illustrate the usefulness of clue-based relevance measures for information retrieval and have important consequences for both the formulation of automated retrieval mechanisms and the construction of a gold standard set of standard-curriculum alignments. VL - 46 UR - http://www.sciencedirect.com/science/article/B6VC8-4XF7Y02-1/2/3fd5e4257f3d904d5929eeff2185c678 CP - 3 U2 - a U4 - 12651030529 ID - 12651030529 ER - TY - CONF T1 - Does Using CobiT Improve IT Solution Proposals? T2 - AAA Annual Meeting, IS Section Y1 - 2010 A1 - Marshall,Byron A1 - Curry,Michael A1 - Reitsma,Reindert KW - Accounting KW - BIS AB - The CobiT (Control Objectives for Information and related Technology) framework is designed to help organizations implement IT governance practices by systematically shaping identifiable IT processes to better leverage IT expenditures. The control structure advocated in CobiT embodies governance notions including business alignment, a risk/control perspective, systematic measurement, accountability, and continuous improvement. Despite the rise of internal control regulation, not all organizations have implemented systematic IT controls and many, notably small, organizations may never do so. This study explores whether exposing decision makers to CobiT positively affects the IT solutions they generate. We present a framework (drawn primarily from the structure of CobiT) for identifying normatively better IT plans as measured by application of governance principles. We report on 115 IT solution proposals created by business students. The proposals developed using CobiT more frequently took a risk/control approach, addressed the need for continuous improvement, referred to general IT processes, identified the people who should implement a solution, and proposed more measures of success. Thus, exposing decision makers to a systematic IT governance framework promises to help them generate more comprehensive solutions to IT challenges. JA - AAA Annual Meeting, IS Section U2 - b U4 - 16758226945 ID - 16758226945 ER - TY - CONF T1 - Educational Standard Assignment; Some recent findings working with NSDL tools CAT & SAT T2 - National Science Digital Library (NSDL) 2010 Annual Meeting Y1 - 2010 A1 - Reitsma,Reindert A1 - Diekema,A. KW - BIS AB - The NSDL suite of tools offers the Content Assignment and Standard Alignment Tools (CAT & SAT). We present two evaluations of these tools; one is a comparative analysis of human vs. CAT standard assignment. Another is the use of a 24M-row database of SAT-based standard alignments. The latter explores the feasibility of standard cross walking JA - National Science Digital Library (NSDL) 2010 Annual Meeting U2 - b U4 - 33900787713 ID - 33900787713 ER - TY - HEAR T1 - IT curriculum and critical skills set for effective IT professionals: is there a gap? Y1 - 2010 A1 - Reitsma,Reindert A1 - Eom,Mike A1 - Hootman,J KW - BIS JA - 2010 Portland CIO Forum CY - Portland, OR U2 - c U4 - 27415453697 ID - 27415453697 ER - TY - CONF T1 - IT Governance Norms and IT Success T2 - 2nd annual Pre‐ICIS Workshop on Accounting Information Systems Y1 - 2010 A1 - Marshall,Byron A1 - Curry,Michael A1 - Reitsma,Reindert KW - Accounting KW - BIS AB - The checklists included in well-known IT governance frameworks may be a good fit for
large organizations that face regulatory pressure and a need for large-scale coordination
but may be less appropriate for smaller organizations. Core IT governance principles
embedded in the structure of CobiT, ITIL, and ISO2000 can be expressed as a set of IT
governance norms including business alignment, a risk/control perspective, systematic
measurement, accountability, and continuous improvement. In this study, we model IT
effectiveness and willingness to comply with best practices as effects of adopting these
norms. We propose a set of survey items tailored to help assess the constructs in this
model then partially validate them using principal components analysis. Survey
responses (n=86) reveal a significant connection between evidence of norm adoption in
organizations and IT success. This norms-based paradigm may be useful in bringing
some of the benefits of IT governance to the smaller organizations that are thought to
drive economic growth and employment. JA - 2nd annual Pre‐ICIS Workshop on Accounting Information Systems CY - December 2010, Saint Louis, MO, U.S.A. U2 - b U4 - 31898748929 ID - 31898748929 ER - TY - CONF T1 - Network Visualization of Human and Machine-based Educational Standard Assignment T2 - Information Visualization 2010 (IV-10) Y1 - 2010 A1 - Reitsma,Reindert A1 - Diekema,A. KW - BIS AB - Rapid growth in the availability of digital libraries of K-12 curriculum, coupled with an increased emphasis on standard-based teaching has led to the development of automated standard assignment tools. To assess the performance of one of those tools and to gain insight into the differences between how human catalogers and automated tools conduct these standard assignments, we explore the use of network modeling and visualization techniques for comparing and contrasting the two. The results show significant differences between the human-based and machine-based network maps. Unlike the machine-based maps, the human-based assignment maps elegantly reflect the rationales and principles of the assignments; i.e., clusters of standards separate along lines of content and pedagogical principles. In addition, humans seem significantly more apt at assigning so-called ‘methodological’ standards. JA - Information Visualization 2010 (IV-10) CY - London U2 - b U4 - 21412300801 ID - 21412300801 ER - TY - CHAP T1 - Web Services Y1 - 2010 A1 - Reitsma,Reindert KW - BIS AB - Overview of Web services technology and its use. CY - Hoboken, NJ VL - 3 U2 - d U4 - 7908530177 ID - 7908530177 ER - TY - CONF T1 - Dimensional Standard Alignment in K-12 Digital Libraries: Assessment of Self-found vs. Recommended Curriculum T2 - Proceedings of the Joint Conference on Digital Libraries (JCDL'09), Austin, TX Y1 - 2009 A1 - Marshall,Byron A1 - Reitsma,Reindert A1 - Zarske,Malinda KW - Accounting KW - BIS JA - Proceedings of the Joint Conference on Digital Libraries (JCDL'09), Austin, TX UR - http://doi.acm.org/10.1145/1555400.1555403 U2 - b U4 - 12651069441 ID - 12651069441 ER - TY - HEAR T1 - Navigating the TeachEngineering Resource Y1 - 2009 A1 - Reitsma,Reindert KW - BIS JA - NSF TeachEngineering/GK-12 Workshop CY - Boulder, CO U2 - c U4 - 14032785409 ID - 14032785409 ER - TY - HEAR T1 - Regionalization of Information Space with Capacity-constrained Voronoi Diagrams Y1 - 2009 A1 - Reitsma,Reindert KW - BIS JA - Colloquium Geographic Information Science (GIS) CY - Zurich, CH U2 - c U4 - 14032777217 ID - 14032777217 ER - TY - HEAR T1 - TeachEngineering: K-12 Teacher Use Study Y1 - 2009 A1 - Reitsma,Reindert A1 - Marshall,Byron KW - Accounting KW - BIS JA - Special Workshop on TeachEngineering/GK-12 Integration CY - Boulder, CO. U2 - c U4 - 12650889217 ID - 12650889217 ER - TY - JOUR T1 - Information Space Partitioning Using Adaptive Voronoi Diagrams JF - Information Visualization Y1 - 2007 A1 - Reitsma,Reindert A1 - Trubin,Stanislav KW - BIS AB - In this paper we present and evaluate a Voronoi method for partitioning continuous information spaces. We define the formal characteristics of the problem and discuss several well-known partitioning methods and approaches. We submit that although they all partially solve the problem, they all have shortcomings. As an alternative, we offer an approach based on an adaptive version of the multiplicatively weighted Voronoi diagram. The diagram is ‘adaptive’ because it is computed backwards; i.e., the generators' weights are treated as dependent rather than independent variables. We successfully test this adaptive solution using both ideal-typical (artificial) and empirical data. Since the resultant visualizations are meant to be used by human subjects, we then discuss the results of a usability experiment, positioning the adaptive solution against a commonly used rectangular solution and the classic nonweighted Voronoi solution. The results indicate that in terms of usability, both the rectangular and the adaptive Voronoi solution outperform the standard Voronoi solution. In addition, although subjects are better able to gage rectangular area relationships, only the adaptive Voronoi solution satisfies all geometric constraints of weight-proportional partitioning. VL - 6 U2 - a U4 - 649322496 ID - 649322496 ER - TY - HEAR T1 - Poster Session. Aligning Curriculum with Standards: TeachEngineering, SAT & CAT Y1 - 2007 A1 - Reitsma,Reindert A1 - Cyr,Martha N. A1 - Diekema,Anne KW - BIS JA - National Science Digital Library Annual Meeting CY - Washington, DC U2 - c U4 - 8579811329 ID - 8579811329 ER - TY - CONF T1 - Semantics or Standards for Curriculum Search? T2 - Proceedings of the 7th ACM/IEEE Joint Conference on Digital Libraries, 181-182 Y1 - 2007 A1 - Marshall,Byron A1 - Reitsma,Reindert A1 - Cyr,Martha N KW - Accounting KW - BIS AB - Aligning digital library resources with national and state educational standards to help K-12 teachers search for relevant curriculum is an important issue in the digital library community. Aligning standards from different states promises to help teachers in one state find appropriate materials created and cataloged elsewhere. Although such alignments provide a powerful means for crosswalking standards and curriculum across states, alignment matrices are intrinsically sparse. Hence, we hypothesize that such sparseness may cause significant numbers of false negatives when used for searching curriculum. Our preliminary results confirm the false negative hypothesis, demonstrate the usefulness of term-based techniques in addressing the false negative problem, and explore ways to combine term occurrence data with standards correlations. JA - Proceedings of the 7th ACM/IEEE Joint Conference on Digital Libraries, 181-182 CY - New York, NY U2 - b U4 - 2606370817 ID - 2606370817 ER - TY - HEAR T1 - TeachEngineering Poster Session Y1 - 2007 A1 - Reitsma,Reindert A1 - Vanlue,William A1 - Lewis,Paul KW - BIS JA - OSU 2007 National Science Board Site Visit U2 - c U4 - 2606598145 ID - 2606598145 ER - TY - JOUR T1 - Weight-proportional Space Partitioning Using Adaptive Voronoi Diagrams JF - Geoinformatica Y1 - 2007 A1 - Reitsma,Reindert A1 - Trubin,S, A1 - Mortensen,E. KW - BIS AB - Traditional application of Voronoi diagrams for space partitioning results in Voronoi regions, each with a specific area determined by the generators’ relative locations and weights. Particularly in the area of information space (re)construction, however, there is a need for inverse solutions; i.e., finding weights that result in regions with predefined area ratios. In this paper, we formulate an adaptive Voronoi solution and propose a raster-based optimization method for finding the associated weight set. The solution consists of a combination of simple, fixed-point iteration with an optional spatial resolution refinement along the regions’ boundaries using quadtree decomposition. We present the corresponding algorithm and its complexity analysis. The method is successfully tested on a series of ideal”typical cases and the interactions between the adaptive technique and boundary resolution refinement are explored and assessed. VL - 11 CP - 3 U2 - a U4 - 649330688 ID - 649330688 ER - TY - HEAR T1 - TeachEngineering Poster Session Y1 - 2006 A1 - Reitsma,Reindert A1 - Sullivan,J A1 - Cyr,M N KW - BIS JA - National Science Digital Library Annual Meeting CY - Washington, DC U2 - c U4 - 2606585857 ID - 2606585857 ER - TY - HEAR T1 - Poster Session. Just a cute kid with a great imagination? Y1 - 2005 A1 - Reitsma,Reindert A1 - Sullivan,J A1 - Cyr,M N KW - BIS JA - National Science Digital Library Annual Meeting CY - Denver, CO U2 - c U4 - 2606573569 ID - 2606573569 ER - TY - JOUR T1 - Spatialization of Web Sites Using a Weighted Frequency Model of Navigation Data JF - Journal of the Association for Information Science and Technology Y1 - 2004 A1 - Reitsma,Reindert A1 - Thabane,L. A1 - MacLeod,J. KW - BIS AB - Reitsma, Thabane, and MacLeod are interested in the display of document sets as visualized geometric spaces. Such spaces can use metrics and dimensions determined arbitrarily prior to analysis of data, or they may use secondary data (logged website transaction counts, perhaps) with techniques like factor analysis or MDS to find a structure. Using high transaction volume between an origin and a destination as an indicator of a small distance and a low volume as an indicator of a large distance, a transaction log can provide input to MDS. One problem is the possible origination of multiple sessions from the same address where one can not determine if consecutive requests are part of the same transaction and thus frequencies may be invalid. They suggest the use of the probability that a count is a transaction as a weight rather the count alone, with this probability depending upon the time separation between an origin and a destination with less time indicating a higher probability. A transaction log for a website for undergraduate engineering learning was analyzed in this manner and weighted transaction counts were compared to the use of straight count inputs to MDS using the Euclidean metric and four dimensions. Weighted results were not significantly different. VL - 55 CP - 1 U2 - a U4 - 649314304 ID - 649314304 ER - TY - HEAR T1 - Teachengineering Resources for K-12 Y1 - 2004 A1 - Reitsma,Reindert A1 - Cyr,M. A1 - Mooney,M. A1 - Sullivan,J. A1 - Ybarra,G. KW - BIS JA - 4th Annual NSF-NSDL meeting U2 - c U4 - 649347072 ID - 649347072 ER - TY - JOUR T1 - Exploiting Engineering as a Unique Distance Learning Tool 19, 379-388 JF - International Journal of Engineering Education Y1 - 2003 A1 - Carlson,L. A1 - Reitsma,Reindert A1 - Brandemuehl,M. A1 - Hertzberg,J. A1 - Sullivan,J. A1 - Gabbard,S. KW - BIS VL - 19 U2 - a U4 - 649318400 ID - 649318400 ER - TY - JOUR T1 - Loglinear and Multidimensional Scaling Models of Digital Library Navigation JF - International Journal of Human-Computer Studies Y1 - 2002 A1 - Buttenfield,B. A1 - Reitsma,Reindert KW - BIS VL - 57 U2 - a U4 - 51551979520 ID - 51551979520 ER - TY - JOUR T1 - A Living Laboratory JF - Proceedings of the IEEE Y1 - 2000 A1 - Lightner,M. A1 - Carlson,D. A1 - Sullivan,J. A1 - Brandemuehl,M. A1 - Reitsma,Reindert KW - BIS VL - 88 U2 - a U4 - 51551956992 ID - 51551956992 ER - TY - JOUR T1 - Accessibility of Computer-based Simulation Models in Inherently Conflict-Laden Negotiations JF - Group Decision and Negotiation Y1 - 1999 A1 - Zigurs,I. A1 - Reitsma,Reindert A1 - Lewis,C. A1 - Hubscher,R. A1 - Hayes,C. KW - BIS VL - 8 U2 - a U4 - 51551926272 ID - 51551926272 ER - TY - JOUR T1 - Object-oriented Simulation and Evaluation of River Basin Operations. Journal of Geographic Information and Decision Analysis. 1, 1, pp. 10-24 Y1 - 1997 A1 - Reitsma,Reindert A1 - Carron,John C. KW - BIS VL - 1 CP - 1 U2 - a U4 - 240165423104 ID - 240165423104 ER - TY - JOUR T1 - Object-oriented Simulation and Evaluation of River Basin Operations JF - Journal of Geographic Information and Decision Analysis Y1 - 1997 A1 - Reitsma,Reindert A1 - Carron,J. KW - BIS VL - 1 U2 - a U4 - 51551909888 ID - 51551909888 ER - TY - JOUR T1 - Structure and Support of Water Resources Management and Decision Making JF - Journal of Hydrology Y1 - 1996 A1 - Reitsma,Reindert KW - BIS VL - 177 U2 - a U4 - 51551893504 ID - 51551893504 ER - TY - JOUR T1 - Construction Kit for Visual Programming of River-Basin Models JF - Journal of Computing in Civil Engineering Y1 - 1994 A1 - Reitsma,Reindert A1 - Sautins,A. A1 - Wehrend,S. KW - BIS VL - 8 U2 - a U4 - 51551885312 ID - 51551885312 ER - TY - JOUR T1 - WODAN: een Venster op Beleidsinformatie (WODAN: a Window on Decision-making Information) JF - SWIM Y1 - 1990 A1 - Reitsma,Reindert A1 - Hendriks,P. KW - BIS VL - 5 U2 - a U4 - 51551875072 ID - 51551875072 ER - TY - JOUR T1 - A Causal Typology of Migration: The Role of Commuting. Regional Studies JF - Regional Studies Y1 - 1988 A1 - Reitsma,Reindert A1 - Vergoossen,A. KW - BIS VL - 22 U2 - a U4 - 51551858688 ID - 51551858688 ER - TY - JOUR T1 - Artificiele Intelligentie in Geografisch Onderzoek: Cognitie, `Engineering' en Geografische Modellen (Artificial Intelligence in Geographical Research: Cognition, `Engineering' and Geographical Models) JF - SWIM Y1 - 1986 A1 - Reitsma,Reindert KW - BIS VL - 1 U2 - a U4 - 51551834112 ID - 51551834112 ER -