Digital Commons

Unique Fields from Digital Commons

Here are the results of a schema analysis from variety.js that lists the unique fields available in qdc.

key	types	occurrences	percents
_id	ObjectId	36974	100.000000000000000000
metadata	Object	36974	100.000000000000000000
metadata.oai_dc:dc	Object	36974	100.000000000000000000
metadata.oai_dc:dc.@xmlns:dc	String	36974	100.000000000000000000
metadata.oai_dc:dc.@xmlns:oai_dc	String	36974	100.000000000000000000
metadata.oai_dc:dc.@xmlns:xsi	String	36974	100.000000000000000000
metadata.oai_dc:dc.@xsi:schemaLocation	String	36974	100.000000000000000000
metadata.oai_dc:dc.dc:title	String	36974	100.000000000000000000
oai_provider	String	36974	100.000000000000000000
record_id	String	36974	100.000000000000000000
metadata.oai_dc:dc.dc:identifier	String (36672),Array (136)	36808	99.551035863038890739
metadata.oai_dc:dc.dc:datecreated	String	33023	89.314112619678695637
metadata.oai_dc:dc.dc:creator	String (24970),Array (3542)	28512	77.113647427922330735
metadata.oai_dc:dc.dc:subject	Array (13831),String (12434)	26265	71.036403959539129005
metadata.oai_dc:dc.dc:type	String (22454),null (73)	22527	60.926597068210092800
metadata.oai_dc:dc.dc:descriptionabstract	String (17323),null (25)	17348	46.919456915670473052
metadata.oai_dc:dc.dc:contributor	Array (10511),String (1961),null (1)	12473	33.734516146481311694
metadata.oai_dc:dc.dc:thesisdegreediscipline	String	11461	30.997457672959377817
metadata.oai_dc:dc.dc:thesisdegreelevel	String	10612	28.701249526694432745
metadata.oai_dc:dc.dc:thesisdegreename	String	10601	28.671498891112673135
metadata.oai_dc:dc.dc:description	Array (451),String (6000),null (1)	6452	17.450100070319685130
metadata.oai_dc:dc.dc:dateavailable	String	2088	5.647211554065018291
metadata.oai_dc:dc.dc:descriptionnote	String (402),null (6)	408	1.103478119759831122
metadata.oai_dc:dc.dc:rights	String	222	0.600421918104614094
metadata.oai_dc:dc.dc:rightslicense	String	88	0.238005084654081239
metadata.oai_dc:dc.dc:coveragespatial	String	69	0.186617623194677340
metadata.oai_dc:dc.dc:publisher	String	69	0.186617623194677340
metadata.oai_dc:dc.dc:coveragespatiallat	String	4	0.010818412938821876
metadata.oai_dc:dc.dc:coveragespatiallong	String	4	0.010818412938821876

Metadata Mapping

This metadata mapping maps Digital Commons QDC to Primo VE DublinCore Expanded based on the Mapping to the Display, Facets, and Search Sections in the Primo VE Record and the Configuring Import Profiles for Primo VE documentation.

Metadata as mapped as QDC so that theses advisors are searchable and viewable in the Primo record. This is not possible with simple dc.

QDC	Primo VE Expanded DublinCore	Display Field	Facets Field	Search Field
dc:title	dc:title	Title		Title
dc:identifier	dc:identifier			General
dc:datecreated	dc:date	Creation Date	Creation Date	Creation Date
dc:creator	dc:creator	Creator	Creator & Contributors	Creator & Contributor
dc:subject	dc:subject	Subjects	Topic	Subjects
dc:type	dc:subject	Subjects	Topic	Subjects
dc:descriptionabstract	dcterms:abstract	Description	Description
dc:contributor	dcterms:contributor	Contributor	Creator & Contributors	Creator & Contributor
dc:thesisdegreediscipline	dcterms:subject	Subjects	Topic	Subjects
dc:thesisdegreelevel	if this field exists, map discovery:resourceType field to dissertationselse: text_resources
dc:thesisdegreename	dcterms:description	Description	Description
dc:description	dc:description	Description	Description
dc:dateavailable	dcterms:date			Creation Date
dc:descriptionnote	dcterms:description	Description	Description
dc:rights	dc:rights	Rights
dc:rightslicense	dcterms:rights	Rights
dc:coveragespatial	dcterms:coverage			General
dc:publisher	dcterms:publisher	Publisher		General
dc:coveragespatiallat	dcterms:spatial			General
dc:coveragespatiallong	dcterms:spatial			General

Discovery Import Profile

• root element tag: ListRecords

• record elements tag: record

• xpath to the identifier tag: record/header/identifier/text()

• base-url: https://dpla.lib.utk.edu/repox/OAIHandler

• metadata format: oai_qdc

Normalization Rules

Sample XML Record

<record>
<header>
<identifier>oai:trace.tennessee.edu:utk_gradthes-1127</identifier>
<datestamp>2010-02-01T23:31:58Z</datestamp>
<setSpec>publication:utk_gradthes</setSpec>
<setSpec>publication:utk-coll</setSpec>
<setSpec>publication:utk-grad</setSpec>
</header>
<metadata>
<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bepress.com/OAI/2.0/qualified-dublin-core/ https://resources.bepress.com/assets/xsd/oai_qualified_dc.xsd">
<dc:title>
The Relations of the Cherokee Indians with the English in America Prior to 1763
</dc:title>
<dc:creator>Buchanan, David P.</dc:creator>
<dc:date.created>1923-12-01T08:00:00Z</dc:date.created>
<dc:thesis.degree.level>Thesis</dc:thesis.degree.level>
<dc:thesis.degree.name>Master of Arts</dc:thesis.degree.name>
<dc:contributor>ARRAY(0x7f7024cfef58)</dc:contributor>
<dc:subject>Political History</dc:subject>
<dc:subject>Social History</dc:subject>
<dc:subject>United States History</dc:subject>
<dc:description.abstract>
Thesis (M.A.) at University of Tennessee from 1923 describing relations between the Cherokee and English prior to 1763. This thesis by David Buchanan contains detailed accounts of the Cherokee nation before colonization of the Cherokee territories in the Appalachian region as well as interactions between the English army and settlers.
</dc:description.abstract>
<dc:identifier>https://trace.tennessee.edu/utk_gradthes/98</dc:identifier>
</oai_dc:dc>
</metadata>
</record>

Copy First Title

rule "copy first title"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='title']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='title'][1]" to "dc"."title"
end

Copy identifiers

rule "copy identifiers"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='identifier']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='identifier']" to "dc"."identifier"
end

Copy date created

rule "copy date created"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='date.created']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='date.created']" to "dc"."date"
end

Copy Creators

rule "copy creators"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='creator']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='creator']" to "dc"."creator"
end

Copy subjects to subject

rule "copy subjects"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='subject']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='subject']" to "dc"."subject"
end

Copy type to subject since they aren’t types

rule "copy types to subject"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='type']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='type']" to "dc"."subject"
end

Copy descriptionabstracts to dcterms abstract

rule "copy descriptionabstracts"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description.abstract']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description.abstract']" to "dcterms"."abstract"
end

Copy thesisdegreediscipline

rule "copy thesisdegreediscipline"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.discipline']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.discipline']" to "dcterms"."subject"
end

Determine resource type

rule "determine if etd"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.level']"
    then
        set "dissertations" in "discovery"."resourceType"
end

rule "determine if not etd"
    when
        not exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.level']"
    then
        set "articles" in "discovery"."resourceType"
end

Copy thesisdegreename to description

rule "Copy thesisdegreename"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.name']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='thesis.degree.name']" to "dcterms"."description"
end

Copy description to description

rule "Copy description"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description']" to "dc"."description"
end

Copy dcdateavailable to dcterms:date

rule "Copy dcdateavailable to dcterms:date"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='date.available']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='date.available']" to "dcterms"."date"
end

Copy description to dc:descriptionnote

rule "Copy description to dc:descriptionnote"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description.note']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='description.note']" to "dcterms"."description"
end

Copy rights

rule "Copy rights"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='rights']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='rights']" to "dc"."rights"
end

rule "Copy rightslicense"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='rights.license']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='rights.license']" to "dcterms"."rights"
end

Copy coveragespatial

rule "Copy coveragespatial"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial']" to "dcterms"."spatial"
end

rule "Copy coveragespatiallat"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial.lat']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial.lat']" to "dcterms"."spatial"
end

rule "Copy coveragespatiallong"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial.long']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='coverage.spatial.long']" to "dcterms"."spatial"
end

Copy publisher

rule "Copy publisher"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='publisher']"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='publisher']" to "dc"."publisher"
end

Copy contributors if contributor does not contain Array

rule "Copy contributors if not Array"
    when
        exist "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='contributor'][not(contains(text(), 'ARRAY'))]"
    then
        copy "/record/metadata[1]/*[namespace-uri()='http://www.openarchives.org/OAI/2.0/oai_dc/' and local-name()='dc'][1]/*[namespace-uri()='http://purl.org/dc/elements/1.1/' and local-name()='contributor']" to "dcterms"."contributor"
end

Normalized Record Post Import

A sample record as XML:

A sample ETD as XML

<record>
<header>
<identifier>oai:trace.tennessee.edu:utk_gradthes-6890</identifier>
<datestamp>2020-02-13T02:30:08Z</datestamp>
<setSpec>publication:utk-coll</setSpec>
<setSpec>publication:utk_gradthes</setSpec>
<setSpec>publication:utk-grad</setSpec>
</header>
<metadata>
<oai_dc:dc xsi:schemaLocation="http://www.bepress.com/OAI/2.0/qualified-dublin-core/ https://resources.bepress.com/assets/xsd/oai_qualified_dc.xsd">
<dc:title>
STUDY OF THE DYNAMIC BEHAVIOR OF MOLTEN-SALT REACTORS
</dc:title>
<dc:creator>Singh, Vikram</dc:creator>
<dc:date.created>2019-05-01T07:00:00Z</dc:date.created>
<dc:thesis.degree.level>Thesis</dc:thesis.degree.level>
<dc:thesis.degree.name>Master of Science</dc:thesis.degree.name>
<dc:thesis.degree.discipline>Nuclear Engineering</dc:thesis.degree.discipline>
<dc:contributor>Belle Upadhyaya</dc:contributor>
<dc:contributor>Ondřej Chvála, Laurence Miller, Lawrence Heilbronn</dc:contributor>
<dc:subject>molten-salt reactor</dc:subject>
<dc:subject>dynamics</dc:subject>
<dc:subject>modeling</dc:subject>
<dc:subject>fission product poisoning</dc:subject>
<dc:subject>load-following</dc:subject>
<dc:subject>sensitivity analysis</dc:subject>
<dc:description.abstract>
Molten-Salt Reactors (MSR) are a Gen-IV reactor concept being investigated by companies and institutions alike. These reactors are considerably different from the current fleet of Light-Water Reactors and outside the experience base of most Nuclear Engineers. The fluid nature of the fuel leads to delayed temperature and reactivity feedback effects unique to each reactor design that need to be characterized to determine operability and safety limits. Moreover, the design space under consideration encompasses various fuel-cycles, neutron spectra, and materials. This requires a modeling methodology that can be applied to the breadth of designs under development and is the subject of ongoing research at the University of Tennessee. This thesis presents a dynamic modeling approach that was validated against experimental data from the Molten-Salt Reactor Experiment. The developed lumped-parameter models are nonlinear and represent time rate of change in mass and energy in all parts of the reactor. Reactivity feedbacks arising from changes in temperature and neutron poison concentrations are taken into account. These models can be used to study both the time and frequency response to perturbations caused during normal operating conditions and during anomalies resulting from failure of certain components. The thesis incorporates material published in a series of journal articles and conference proceedings. The validated modeling approach is detailed, and all equations and parameters of interest are listed. Three reactor systems are modeled, namely the Molten-Salt Reactor Experiment, two-fluid Molten-Salt Breeder Reactor, and a plant-level model based on the Molten-Salt Demonstration Reactor. Application of the models to studying operational anomalies, dynamic effects of xenon and samarium neutron poisons, parametric sensitivity analysis, and load-following are also presented. From the investigated perturbations for the presented designs, it is found that these systems are stable and self-regulating. Modeling results suggest that well-designed MSRs with adequate negative feedback exhibit excellent load-following characteristics that can be leveraged to engineer control systems offering a great deal of autonomy.
</dc:description.abstract>
<dc:description.note>
</dc:description.note>
<dc:identifier>https://trace.tennessee.edu/utk_gradthes/5482</dc:identifier>
</oai_dc:dc>
</metadata>
</record>

The same record nomalized as JSON:

The record normalized in Primo.

{
    "display": {
        "source": ["UTK_DigitalCommons_TRACE"],
        "type": ["dissertation"],
        "title": ["STUDY OF THE DYNAMIC BEHAVIOR OF MOLTEN-SALT REACTORS"],
        "subject": ["Nuclear Engineering", "molten-salt reactor", "dynamics", "modeling", "fission product poisoning", "load-following", "sensitivity analysis"],
        "identifier": ["https://trace.tennessee.edu/utk_gradthes/5482"],
        "creator": ["Singh, Vikram"],
        "description": ["Portions of this document were previous published in journal articles and conference proceedings. This material has been incorporated here with permission from the publishers. The first page of each chapter presents a brief background on the work carried out by the author and his colleagues, and provides references to the published articles.", "Master of Science", "Molten-Salt Reactors (MSR) are a Gen-IV reactor concept being investigated by companies and institutions alike. These reactors are considerably different from the current fleet of Light-Water Reactors and outside the experience base of most Nuclear Engineers. The fluid nature of the fuel leads to delayed temperature and reactivity feedback effects unique to each reactor design that need to be characterized to determine operability and safety limits. Moreover, the design space under consideration encompasses various fuel-cycles, neutron spectra, and materials. This requires a modeling methodology that can be applied to the breadth of designs under development and is the subject of ongoing research at the University of Tennessee. This thesis presents a dynamic modeling approach that was validated against experimental data from the Molten-Salt Reactor Experiment. The developed lumped-parameter models are nonlinear and represent time rate of change in mass and energy in all parts of the reactor. Reactivity feedbacks arising from changes in temperature and neutron poison concentrations are taken into account. These models can be used to study both the time and frequency response to perturbations caused during normal operating conditions and during anomalies resulting from failure of certain components. The thesis incorporates material published in a series of journal articles and conference proceedings. The validated modeling approach is detailed, and all equations and parameters of interest are listed. Three reactor systems are modeled, namely the Molten-Salt Reactor Experiment, two-fluid Molten-Salt Breeder Reactor, and a plant-level model based on the Molten-Salt Demonstration Reactor. Application of the models to studying operational anomalies, dynamic effects of xenon and samarium neutron poisons, parametric sensitivity analysis, and load-following are also presented. From the investigated perturbations for the presented designs, it is found that these systems are stable and self-regulating. Modeling results suggest that well-designed MSRs with adequate negative feedback exhibit excellent load-following characteristics that can be leveraged to engineer control systems offering a great deal of autonomy."],
        "mms": ["9925897935302311"],
        "contributor": ["Belle Upadhyaya", "Ondřej Chvála, Laurence Miller, Lawrence Heilbronn"],
        "version": ["0"]
    },
    "control": {
        "sourcerecordid": ["9925897935302311"],
        "recordid": ["alma9925897935302311"],
        "sourceid": "alma",
        "originalsourceid": ["urn:dpla.lib.utk.edu.utk_tracerepox:f9ed25be-aef2-4b5e-b842-9aabab6f50f6"],
        "sourcesystem": ["Other"],
        "sourceformat": ["DC"],
        "score": ["1.0"]
    },
    "addata": {
        "au": ["Singh, Vikram"],
        "aucorp": ["Belle Upadhyaya", "Ondřej Chvála, Laurence Miller, Lawrence Heilbronn"],
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        "btitle": ["STUDY OF THE DYNAMIC BEHAVIOR OF MOLTEN-SALT REACTORS"]
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        "author": ["Singh, Vikram"]
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        "subject": ["sensitivity analysis", "load-following", "fission product poisoning", "modeling", "dynamics", "molten-salt reactor", "Nuclear Engineering"],
        "description": ["Molten-Salt Reactors (MSR) are a Gen-IV reactor concept being investigated by companies and institutions alike. These reactors are considerably different from the current fleet of Light-Water Reactors and outside the experience base of most Nuclear Engineers. The fluid nature of the fuel leads to delayed temperature and reactivity feedback effects unique to each reactor design that need to be characterized to determine operability and safety limits. Moreover, the design space under consideration encompasses various fuel-cycles, neutron spectra, and materials. This requires a modeling methodology that can be applied to the breadth of designs under development and is the subject of ongoing research at the University of Tennessee. This thesis presents a dynamic modeling approach that was validated against experimental data from the Molten-Salt Reactor Experiment. The developed lumped-parameter models are nonlinear and represent time rate of change in mass and energy in all parts of the reactor. Reactivity feedbacks arising from changes in temperature and neutron poison concentrations are taken into account. These models can be used to study both the time and frequency response to perturbations caused during normal operating conditions and during anomalies resulting from failure of certain components. The thesis incorporates material published in a series of journal articles and conference proceedings. The validated modeling approach is detailed, and all equations and parameters of interest are listed. Three reactor systems are modeled, namely the Molten-Salt Reactor Experiment, two-fluid Molten-Salt Breeder Reactor, and a plant-level model based on the Molten-Salt Demonstration Reactor. Application of the models to studying operational anomalies, dynamic effects of xenon and samarium neutron poisons, parametric sensitivity analysis, and load-following are also presented. From the investigated perturbations for the presented designs, it is found that these systems are stable and self-regulating. Modeling results suggest that well-designed MSRs with adequate negative feedback exhibit excellent load-following characteristics that can be leveraged to engineer control systems offering a great deal of autonomy.", "Master of Science", "Portions of this document were previous published in journal articles and conference proceedings. This material has been incorporated here with permission from the publishers. The first page of each chapter presents a brief background on the work carried out by the author and his colleagues, and provides references to the published articles."],
        "journal_title": "STUDY OF THE DYNAMIC BEHAVIOR OF MOLTEN-SALT REACTORS",
        "title": "STUDY OF THE DYNAMIC BEHAVIOR OF MOLTEN-SALT REACTORS",
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