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(1 - 9 of 9)
- Title
- Realtime Editing in Virtual Reality for Room Scale Scans.
- Creator
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Greenwood, Charles, Laviola II, Joseph, Hughes, Charles, Heinrich, Mark, University of Central Florida
- Abstract / Description
-
This work presents a system for the design and implementation of tools that support the editing of room-scale scans within a virtual reality environment, in real time. The moniker REVRRSS ((")reverse(")) thus stands for Real-time Editing (in) Virtual Reality (of) Room Scale Scans. The tools were evaluated for usefulness based upon whether they meet the criterion of real time usability. Users evaluated the editing experience with traditional keyboard-video-mouse compared to a head mounted...
Show moreThis work presents a system for the design and implementation of tools that support the editing of room-scale scans within a virtual reality environment, in real time. The moniker REVRRSS ((")reverse(")) thus stands for Real-time Editing (in) Virtual Reality (of) Room Scale Scans. The tools were evaluated for usefulness based upon whether they meet the criterion of real time usability. Users evaluated the editing experience with traditional keyboard-video-mouse compared to a head mounted display and hand-held controllers for Virtual Reality. Results show that users prefer the VR approach. The quality of the finished product when using VR is comparable to that of traditional desktop controls. The architecture developed here can be adapted to innumerable future projects and tools.
Show less - Date Issued
- 2019
- Identifier
- CFE0007463, ucf:52678
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007463
- Title
- THE ATTIC DOOR: A FEATURE LENGTH MOTION PICTURE.
- Creator
-
Daneau, Daniel, Finch, Randy, University of Central Florida
- Abstract / Description
-
THE ATTIC DOOR is the feature-length film co-written and directed by Danny Daneau while pursuing a Master of Fine Arts at the University of Central Florida. Many challenges had to be met to produce a feature-length motion picture utilizing digital technology on an ultra-low budget as part of a graduate education. Beyond gaining a profound understanding of the physical, financial, and emotional strength it takes to complete a feature-length motion picture, Daneau experienced the creative...
Show moreTHE ATTIC DOOR is the feature-length film co-written and directed by Danny Daneau while pursuing a Master of Fine Arts at the University of Central Florida. Many challenges had to be met to produce a feature-length motion picture utilizing digital technology on an ultra-low budget as part of a graduate education. Beyond gaining a profound understanding of the physical, financial, and emotional strength it takes to complete a feature-length motion picture, Daneau experienced the creative challenges that all filmmakers must meet when applying the principles of filmmaking theory to an actual work of self-expression. The production process for an original narrative film under the guidelines established by the university has pushed him to make a motion picture that is both a highly personal work of film art and evidence of the educational journey he has taken for the past three years.
Show less - Date Issued
- 2008
- Identifier
- CFE0002308, ucf:47832
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002308
- Title
- The Practice and Benefit of Applying Digital Markup in Preserving Texts and Creating Digital Editions: A Poetical Analysis of a Blank-Verse Translation of Virgil's Aeneid.
- Creator
-
Dorner, William, Kamrath, Mark, McDaniel, Rudy, Applen, John, Bauman, Sydney, University of Central Florida
- Abstract / Description
-
Numerous examples of the (")digital scholarly edition(") exist online, and the genre is thriving in terms of interdisciplinary interest as well as support granted by funding agencies. Some editions are dedicated to the collection and representation of the life's work of a single author, others to mass digitization and preservation of centuries' worth of texts. Very few of these examples, however, approach the task of in-text interpretation through visualization.This project describes an...
Show moreNumerous examples of the (")digital scholarly edition(") exist online, and the genre is thriving in terms of interdisciplinary interest as well as support granted by funding agencies. Some editions are dedicated to the collection and representation of the life's work of a single author, others to mass digitization and preservation of centuries' worth of texts. Very few of these examples, however, approach the task of in-text interpretation through visualization.This project describes an approach to digital representation and investigates its potential benefit to scholars of various disciplines. It presents both a digital edition as well as a framework of justification surrounding said edition. In addition to composing this document as an XML file, I have digitized a 1794 English translation of Virgil's Aeneid and used a customized digital markup schema based on the guidelines set forth by the Text Encoding Initiative to indicate a set of poetic figures(-)such as simile and alliteration(-)within that text for analysis. While neither a translation project nor strictly a poetical analysis, this project and its unique approach to interpretive representation could prove of interest to scholars in several disciplines, including classics, digital scholarship, information management, and literary theory. The practice serves both as a case-in-point as well as an example method to replicate with future texts and projects.
Show less - Date Issued
- 2015
- Identifier
- CFE0006032, ucf:51019
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006032
- Title
- REAL-TIME CINEMATIC DESIGN OF VISUAL ASPECTS IN COMPUTER-GENERATED IMAGES.
- Creator
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Obert, Juraj, Pattanaik, Sumanta, University of Central Florida
- Abstract / Description
-
Creation of visually-pleasing images has always been one of the main goals of computer graphics. Two important components are necessary to achieve this goal --- artists who design visual aspects of an image (such as materials or lighting) and sophisticated algorithms that render the image. Traditionally, rendering has been of greater interest to researchers, while the design part has always been deemed as secondary. This has led to many inefficiencies, as artists, in order to create a...
Show moreCreation of visually-pleasing images has always been one of the main goals of computer graphics. Two important components are necessary to achieve this goal --- artists who design visual aspects of an image (such as materials or lighting) and sophisticated algorithms that render the image. Traditionally, rendering has been of greater interest to researchers, while the design part has always been deemed as secondary. This has led to many inefficiencies, as artists, in order to create a stunning image, are often forced to resort to the traditional, creativity-baring, pipelines consisting of repeated rendering and parameter tweaking. Our work shifts the attention away from the rendering problem and focuses on the design. We propose to combine non-physical editing with real-time feedback and provide artists with efficient ways of designing complex visual aspects such as global illumination or all-frequency shadows. We conform to existing pipelines by inserting our editing components into existing stages, hereby making editing of visual aspects an inherent part of the design process. Many of the examples showed in this work have been, until now, extremely hard to achieve. The non-physical aspect of our work enables artists to express themselves in more creative ways, not limited by the physical parameters of current renderers. Real-time feedback allows artists to immediately see the effects of applied modifications and compatibility with existing workflows enables easy integration of our algorithms into production pipelines.
Show less - Date Issued
- 2010
- Identifier
- CFE0003250, ucf:48559
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003250
- Title
- Modulation of cholera toxin structure and function by host proteins.
- Creator
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Burress, Helen, Teter, Kenneth, Self, William, Zervos, Antonis, Tatulian, Suren, University of Central Florida
- Abstract / Description
-
Cholera toxin (CT) moves from the cell surface to the endoplasmic reticulum (ER) where the catalytic CTA1 subunit separates from the holotoxin and unfolds due to its intrinsic thermal instability. Unfolded CTA1 then moves through an ER translocon pore to reach its cytosolic target. Due to the instability of CTA1, it must be actively refolded in the cytosol to achieve the proper conformation for modification of its G protein target. The cytosolic heat shock protein Hsp90 is involved with the...
Show moreCholera toxin (CT) moves from the cell surface to the endoplasmic reticulum (ER) where the catalytic CTA1 subunit separates from the holotoxin and unfolds due to its intrinsic thermal instability. Unfolded CTA1 then moves through an ER translocon pore to reach its cytosolic target. Due to the instability of CTA1, it must be actively refolded in the cytosol to achieve the proper conformation for modification of its G protein target. The cytosolic heat shock protein Hsp90 is involved with the ER-to-cytosol translocation of CTA1, yet the mechanistic role of Hsp90 in CTA1 translocation remains unknown. Potential post-translocation roles for Hsp90 in modulating the activity of cytosolic CTA1 are also unknown. Here, we show by isotope-edited Fourier transform infrared (FTIR) spectroscopy that Hsp90 induces a gain-of-structure in disordered CTA1 at physiological temperature. Only the ATP-bound form of Hsp90 interacts with disordered CTA1, and its refolding of CTA1 is dependent upon ATP hydrolysis. In vitro reconstitution of the CTA1 translocation event likewise required ATP hydrolysis by Hsp90. Surface plasmon resonance (SPR) experiments found that Hsp90 does not release CTA1, even after ATP hydrolysis and the return of CTA1 to a folded conformation. The interaction with Hsp90 allowed disordered CTA1 to attain an active state and did not prevent further stimulation of toxin activity by ADP-ribosylation factor 6, a host cofactor for CTA1. This activity is consistent with its role as a chaperone that refolds endogenous cytosolic proteins as part of a foldosome complex consisting of Hsp90, Hop, Hsp40, p23, and Hsc70. A role for Hsc70 in CT intoxication has not yet been established. Here, biophysical, biochemical, and cell-based assays demonstrate Hsp90 and Hsc70 play overlapping roles in the processing of CTA1. Using SPR we determined that Hsp90 and Hsc70 could bind independently to CTA1 at distinct locations with high affinity, even in the absence of the Hop linker. Studies using isotope-edited FTIR spectroscopy found that, like Hsp90, Hsc70 induces a gain-of-structure in unfolded CTA1. The interaction between CTA1 and Hsc70 is essential for intoxication, as an RNAi-induced loss of the Hsc70 protein generates a toxin-resistant phenotype. Further analysis using isotope-edited FTIR spectroscopy demonstrated that the addition of both Hsc70 and Hsp90 to unfolded CTA1 produced a gain-of-structure above that of the individual chaperones. Our data suggest that CTA1 translocation involves a ratchet mechanism which couples the Hsp90-mediated refolding of CTA1 with extraction from the ER. The subsequent binding of Hsc70 further refolds CTA1 in a manner not previously observed in foldosome complex formation. The interaction of CTA1 with these chaperones is essential to intoxication and this work elucidates details of the intoxication process not previously known.
Show less - Date Issued
- 2014
- Identifier
- CFE0005310, ucf:50511
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005310
- Title
- In Vitro Characterization of Unmodified and Pyroglutamylated Alzheimer's Amyloid beta peptide.
- Creator
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Matos, Jason, Tatulian, Suren, Teter, Kenneth, Davidson, Victor, University of Central Florida
- Abstract / Description
-
Plaques of amyloid ? peptide (A?) are a hallmark trait of Alzheimer's disease (AD). However, the precise role of A? aggregates is not well understood. Recent studies have identified that naturally occurring N-terminal truncation and pyroglutamylation of A? significantly increases its neurotoxicity by an unknown mechanism. Content of pyroglutamylated A? (pE-A?) in AD brains has been shown to reach up to 50% of total A?. Modified pE-A? co-aggregates with A? by a seeding mechanism and forms...
Show morePlaques of amyloid ? peptide (A?) are a hallmark trait of Alzheimer's disease (AD). However, the precise role of A? aggregates is not well understood. Recent studies have identified that naturally occurring N-terminal truncation and pyroglutamylation of A? significantly increases its neurotoxicity by an unknown mechanism. Content of pyroglutamylated A? (pE-A?) in AD brains has been shown to reach up to 50% of total A?. Modified pE-A? co-aggregates with A? by a seeding mechanism and forms structurally distinct and highly toxic oligomers. We studied structural transitions of the full-length A?1-42, its pyroglutamylated form A?pE3-42, their 9:1 (A?1-42/A?pE3-42) and 1:1 molar combinations. Transmission electron microscopy was used to directly visualize the fibrils of the samples in a buffer mimicking physiological environment. Atomic force microscopy measurements were done to determine rate of second nucleation events in fibrils. Thioflavin-T fluorescence indicated that low ionic strength suppressed the aggregation of A?pE3-42 but promoted that of A?1-42, suggesting different paths of fibrillogenesis of unmodified A? and pE-A?. Interestingly, A?pE3-42 at only 10% significantly facilitated the fibrillization of A?1-42 at near physiological ionic strength but had little effect at low salt. Circular dichroism and Fourier transform infrared (FTIR) spectroscopy were used to characterize the structural transitions during fibrillogenesis. In aqueous buffer, both unmodified A? and pE-A? peptides adopted parallel intermolecular ?-structure. Interestingly, A?pE3-42 contained lower ?-sheet content than 13C-A?1-42, while retaining significantly larger fractions of ?-helical and turn structures. Structural details of A? and pE-A? combinations were unveiled by isotope-edited FTIR spectroscopy, using 13C-labeled A?1-42 and unlabeled A?pE3-42. When exposed to environmental humidity, A?pE3-42 not only maintained an increased fraction of ?-helix but also was able to reverse 13C-A?1-42 ?-sheet structure. These data provide a novel structural mechanism for pE-A? hypertoxicity; pE-A? undergoes fasternucleation due to its increased hydrophobicity, thus promoting formation of smaller, hypertoxic oligomers of partial ?-helical structure.
Show less - Date Issued
- 2014
- Identifier
- CFE0005378, ucf:50465
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005378
- Title
- THE EFFECT OF COGNITIVE STYLES UPON THE COMPLETION OF A VISUALLY-ORIENTED COMPONENT OF ONLINE INSTRUCTION.
- Creator
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Lee, Jia-Ling, Orwig, Gary, University of Central Florida
- Abstract / Description
-
This study was designed to examine whether a person's prepositioned cognitive style influenced learning achievement in a visually-oriented task for an online learning environment in higher education. Field dependence-independence was used to identify individuals' cognitive styles. A true experimental study was conducted in the fall 2005 term at the University of Central Florida. This researcher followed Dwyer and Moore's research (1991, 2002) and divided learners into three groups (field...
Show moreThis study was designed to examine whether a person's prepositioned cognitive style influenced learning achievement in a visually-oriented task for an online learning environment in higher education. Field dependence-independence was used to identify individuals' cognitive styles. A true experimental study was conducted in the fall 2005 term at the University of Central Florida. This researcher followed Dwyer and Moore's research (1991, 2002) and divided learners into three groups (field dependent [FD], field neutral [FN], and the field independent [FI] students). Eighty-three preservice teachers participated in this study; the data from 52 of the FD and the FI participants were analyzed to answer research questions. The findings in this study supported those in the literature review; students from both FD and FI cognitive styles performed equally well in online learning environments. In addition, for providing introductory-level instruction on visually-oriented tasks in an online learning environment, instructions which emphasized an FD approach benefited both FI and FD students in their knowledge-based learning achievement. In this approach, extra cues and sequence of content might have been the reasons that students had higher scores on their knowledge-based learning achievement and satisfaction levels. The findings of this study also indicated that students could demonstrate higher performance-based learning achievement if they had more experiences on the subject matter and higher knowledge-based learning achievement if they felt the instructions were easy to follow and the workload of the module was manageable. Based on the findings and conclusions, the recommendations are: (1) A larger sample size is needed to generalize the findings of the study; (2) In this study, student-to-student and teacher-to-student interactions might affect students' learning achievement. Future studies should consider those interactions as factors and examine their effect on students' learning achievement.
Show less - Date Issued
- 2006
- Identifier
- CFE0001094, ucf:46773
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001094
- Title
- The Effects of Regulatory Orientation on Subjective Task Values, Ability Beliefs, and Gameplay in a Grammar Editing Computer Game.
- Creator
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Strnad, Stephen, Hoffman, Bobby, Hartshorne, Richard, Sivo, Stephen, University of Central Florida
- Abstract / Description
-
This study investigated mean group differences in composite subjective task values, ability beliefs, and gameplay behaviors between low promotion and high promotion English as a Second Language (ESL) postsecondary students while playing two versions of a grammar-editing computer game. First, students were categorized according to their scores on the General Regulatory Focus Measure. Next, students played two identical versions of the grammar-editing game; in the second game version, an...
Show moreThis study investigated mean group differences in composite subjective task values, ability beliefs, and gameplay behaviors between low promotion and high promotion English as a Second Language (ESL) postsecondary students while playing two versions of a grammar-editing computer game. First, students were categorized according to their scores on the General Regulatory Focus Measure. Next, students played two identical versions of the grammar-editing game; in the second game version, an independent variable was added in the form of an in-game punishment. In the middle of each game version, students completed a modified version of the Expectancy-value Questionnaire. Independent samples t-tests were conducted to determine any statistically significant group differences between groups in terms of subjective task values, ability beliefs, and gameplay behaviors. Results indicated no statistically significant differences between groups for any of the composite dependent variables tested. However, two individual items measuring utility and attainment value indicated significant group differences. The findings of this study both supported and contradicted aspects of regulatory orientation theory and previous regulatory orientation research. This research contributed to the need for motivation studies in the field of digital game-based learning utilizing well-established theoretical frameworks. In addition, this study offered researchers, teachers, instructional designers, and video game designers insights into the effects of regulatory orientations in the digital game-based learning context.
Show less - Date Issued
- 2018
- Identifier
- CFE0007105, ucf:51939
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007105
- Title
- Textbook Cost-Lowering Initiatives: An Exploration of Community College Faculty Experiences.
- Creator
-
Dunn, Susan, Cintron Delgado, Rosa, Owens, James, Boyd, Tammy, Mcardle, Michele, University of Central Florida
- Abstract / Description
-
Faculty have been identified as critical players in the implementation of textbook affordability efforts at community colleges. Furthermore, emerging lower-cost alternatives to traditional textbooks present a wide and growing range of options that may help further efforts. This study sought to examine more closely the role of faculty with respect to textbook cost-lowering initiatives. The researcher utilized in-depth interviews to gain a rich picture of the experiences, attitudes, beliefs,...
Show moreFaculty have been identified as critical players in the implementation of textbook affordability efforts at community colleges. Furthermore, emerging lower-cost alternatives to traditional textbooks present a wide and growing range of options that may help further efforts. This study sought to examine more closely the role of faculty with respect to textbook cost-lowering initiatives. The researcher utilized in-depth interviews to gain a rich picture of the experiences, attitudes, beliefs, and behaviors of nine full-time community college faculty as they confronted textbook affordability efforts and textbook alternatives. The interview data were analyzed using a thematic analysis process. Five major themes and three minor themes were identified. The five major themes were: (a) campus administrators support, but do not mandate, efforts; (b) frequent edition revisions frustrate faculty; (c) departmental approaches to textbook selection vary; (d) content, then affordability, drive selection choices; and (e) faculty have mixed feelings about textbook alternatives. The three minor themes were: (a) faculty efforts to save students money are thwarted by campus bookstores and financial aid policies; (b) English faculty benefit from public domain readings; and (c) more faculty participating in textbook selection means more difficulty deciding on a text. Implications and recommendations were offered for community college leaders, campus bookstores, publishers, and future researchers.
Show less - Date Issued
- 2014
- Identifier
- CFE0005159, ucf:50715
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005159
