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You searched for subject:(temporal dependencies). Showing records 1 – 3 of 3 total matches.

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The Ohio State University

1. Zulaica Hernandez, Iker. Demonstrative pronouns in Spanish: a discourse-based approach.

Degree: PhD, Spanish and Portuguese, 2008, The Ohio State University

This dissertation constitutes an exploration into the discourse anaphoric properties of Spanish demonstrative anaphors esto eso and aquello (cf. this/that). This basic issue, largely ignored in the studies of Spanish linguistics so far, is fully addressed here from a semantic and pragmatic perspective. Thus, a comprehensive corpus study is carried out with an aim at uncovering the speaker’s preferences regarding the referential features of Spanish demonstrative pronouns and a detailed study provided that explores into the morphosyntactic and semantic nature of their most common abstract referents. As these elements lack any sort of explicit ostension, Spanish demonstrative pronouns have been traditionally considered as not belonging in the group of deictic expressions. As a consequence of that, only their pronominal nature has been taken into consideration so far when applied to their discourse behavior. Here, I provide a characterization for Spanish demonstrative pronouns as generalized quantifiers and defend the idea that these elements still retain a deictic component that would allow me to group them on a par with demonstrative determiners. This deictic component that demonstrative pronouns have, though clearly not in the form of an overt pointing act in the canonical sense, is rather conceived of as presuppositional in nature. Based on the speaker’s referential preferences when it comes to make use of demonstrative pronouns to anaphorically refer in discourse to eventualities, and attested by a corpus study carried out with that purpose, I also defend the idea that while demonstrative pronouns esto and eso seem to have lost any trace of a [+/- proximity] spatio-temporal condition, demonstrative pronoun aquello is still marked with a [+ distal] feature. This content, which is also modeled in terms of setting-up presuppositional DRSs for demonstrative pronouns, it also allowed me to postulate a reduction of the tripartite system of Spanish demonstrative pronouns into a basic binary system whereby anaphors esto and eso would be grouped together as being unspecified with respect to proximity and aquello being the term most frequently used in modern Spanish to mark distance along the temporal dimension. Advisors/Committee Members: Gutierrez-Rexach, Javier (Advisor).

Subjects/Keywords: discourse anaphora; abstract objects; abstract anaphora; demonstratives; anaphora resolution; long-distance dependencies; presupposition; reference; events; propositions; corpus study; proximity; spatio-temporal; anaphoric presupposition triggers; abstrac

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Zulaica Hernandez, I. (2008). Demonstrative pronouns in Spanish: a discourse-based approach. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1196826616

Chicago Manual of Style (16th Edition):

Zulaica Hernandez, Iker. “Demonstrative pronouns in Spanish: a discourse-based approach.” 2008. Doctoral Dissertation, The Ohio State University. Accessed December 12, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1196826616.

MLA Handbook (7th Edition):

Zulaica Hernandez, Iker. “Demonstrative pronouns in Spanish: a discourse-based approach.” 2008. Web. 12 Dec 2019.

Vancouver:

Zulaica Hernandez I. Demonstrative pronouns in Spanish: a discourse-based approach. [Internet] [Doctoral dissertation]. The Ohio State University; 2008. [cited 2019 Dec 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1196826616.

Council of Science Editors:

Zulaica Hernandez I. Demonstrative pronouns in Spanish: a discourse-based approach. [Doctoral Dissertation]. The Ohio State University; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1196826616


North Carolina State University

2. Aia, Mahesh. Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks.

Degree: MS, Computer Networking, 2005, North Carolina State University

Researchers are highly dependent on simulations to compare and evaluate the performance of Mobile Ad-hoc networking protocols. Mobility modeling plays a very important role in simulation-based studies of MANET protocols, since the mobility of nodes is the limiting factor in the performance of such protocols. Currently, simulations of MANET protocols rely on simplistic, purely stochastic models such as the random waypoint. These models do not reflect the motion of real world MANET nodes, which may be deployed in diverse scenarios. At the present time, the only available alternative to these models is fine-grained detailed simulations based on extensive surveys of actual node behavior, or extensive sets of real world traces. This work proposes an alternative hybrid mobility model that extracts scenario-specific information from real traces and generates realistic node movements for particular scenarios. The distinguishing features of our model are its ability to reproduce spatial-temporal node movement properties from sample traces and its general adaptability to traces from any real-life scenario. We develop a framework for our model and apply it to reference traces from several realistic scenarios. The hybrid model is then evaluated for accuracy by comparing the performance of MANET routing protocols using random waypoint with realistic parameters and our model against the original reference traces used by our model. The results show the relevance of accounting for spatial and temporal aspects of node movements in mobility models. Advisors/Committee Members: Dr. Rudra Dutta, Committee Member (advisor), Dr. Yannis Viniotis, Committee Member (advisor), Dr. Mihail L. Sichitiu, Committee Chair (advisor).

Subjects/Keywords: mobility modeling; MANETs; MANET routing protocols; detailed simulation frameworks; stochastic mobility models; simulation modeling; spatial and temporal dependencies; performance evaluation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Aia, M. (2005). Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/447

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Aia, Mahesh. “Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks.” 2005. Thesis, North Carolina State University. Accessed December 12, 2019. http://www.lib.ncsu.edu/resolver/1840.16/447.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Aia, Mahesh. “Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks.” 2005. Web. 12 Dec 2019.

Vancouver:

Aia M. Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks. [Internet] [Thesis]. North Carolina State University; 2005. [cited 2019 Dec 12]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/447.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Aia M. Directed Waypoint Model: A Hybrid Approach to Realistic Mobility Modeling in Mobile Ad-hoc Networks. [Thesis]. North Carolina State University; 2005. Available from: http://www.lib.ncsu.edu/resolver/1840.16/447

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of North Texas

3. Tuck, Terry W. Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases.

Degree: 2001, University of North Texas

Many activities are comprised of temporally dependent events that must be executed in a specific chronological order. Supportive software applications must preserve these temporal dependencies. Whenever the processing of this type of an application includes transactions submitted to a database that is shared with other such applications, the transaction concurrency control mechanisms within the database must also preserve the temporal dependencies. A basis for preserving temporal dependencies is established by using (within the applications and databases) real-time timestamps to identify and order events and transactions. The use of optimistic approaches to transaction concurrency control can be undesirable in such situations, as they allow incorrect results for database read operations. Although the incorrectness is detected prior to transaction committal and the corresponding transaction(s) restarted, the impact on the application or entity that submitted the transaction can be too costly. Three transaction concurrency control algorithms are proposed in this dissertation. These algorithms are based on timestamp ordering, and are designed to preserve temporal dependencies existing among data-dependent transactions. The algorithms produce execution schedules that are equivalent to temporally ordered serial schedules, where the temporal order is established by the transactions' start times. The algorithms provide this equivalence while supporting currency to the extent out-of-order commits and reads. With respect to the stated concern with optimistic approaches, two of the proposed algorithms are risk-free and return to read operations only committed data-item values. Risk with the third algorithm is greatly reduced by its conservative bias. All three algorithms avoid deadlock while providing risk-free or reduced-risk operation. The performance of the algorithms is determined analytically and with experimentation. Experiments are performed using functional database management system models that implement the proposed algorithms and the well-known Conservative Multiversion Timestamp Ordering algorithm. Advisors/Committee Members: Boukerche, Azzedine, Jacob, Roy T., Mikler, Armin R., Tarau, Paul.

Subjects/Keywords: Distributed databases.; Multitasking (Computer science); Database management.; temporal dependencies; transaction concurrency control; database management

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Tuck, T. W. (2001). Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc2743/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Tuck, Terry W. “Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases.” 2001. Thesis, University of North Texas. Accessed December 12, 2019. https://digital.library.unt.edu/ark:/67531/metadc2743/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Tuck, Terry W. “Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases.” 2001. Web. 12 Dec 2019.

Vancouver:

Tuck TW. Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases. [Internet] [Thesis]. University of North Texas; 2001. [cited 2019 Dec 12]. Available from: https://digital.library.unt.edu/ark:/67531/metadc2743/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tuck TW. Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases. [Thesis]. University of North Texas; 2001. Available from: https://digital.library.unt.edu/ark:/67531/metadc2743/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.