http://ontologydesignpatterns.org/api.php?action=feedcontributions&feedformat=atom&user=VinayChaudhri 2026-04-23T19:02:25Z User contributions MediaWiki 1.25.6 http://ontologydesignpatterns.org/index.php?title=Community:Representing_Negation&diff=10232 2010-10-05T01:41:57Z

<p>VinayChaudhri: Representing different flavors of negation</p> <hr /> <div>{{TitleDescription Template<br /> |Title=Negative Information<br /> |Description=Consider the following example sentences:<br /> <br /> The Golgi apparatus consists of stacks of flattened sacs, or cisternae, which, unlike ER cisternae, are not physically connected.<br /> <br /> The centrioles are not essential for cell division.<br /> <br /> The usual replication machinery provides no way to complete the 5' ends of daughter DNA strands.<br /> <br /> Temomeres do not contain genes.<br /> <br /> The special base triplets UAA, UAG, and UGA do not code for amino acids but instead act as signals to stop translation.<br /> <br /> Both nucleoli and ribosomes, unlike most other organelles, are not enclosed in membrane.<br /> <br /> Prokaryotes do not have mitotic spindle.<br /> <br /> Because bacteria lack nuclei, their DNA is not segregated from ribosomes and the other protein-synthesizing equipment.<br /> <br /> <br /> The leader and trailer are not translated, nor is the poly(A) tail.<br /> <br /> This means that most eukaryotic genes and their RNA transcripts have long noncoding stretches of nucleotides, regions that are not translated.<br /> <br /> Molecules of tRNA are not all identical.<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> Neither synapsis nor chiasma formation occurs during mitosis.<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> }}<br /> {{Graphical representation}}<br /> {{Modeling Issue Template<br /> |Author=Vinay K Chaudhri<br /> |Domain=Biology<br /> |CompetencyQuestion=<br /> Is it true that the DNA is translated completely?<br /> <br /> Can DNA and Ribosomes touch each other in Bacteria?<br /> <br /> }}<br /> {{Additional information header}}<br /> <br /> {{My references}}<br /> {{Modeling Issue toolbar}}<br /> {{Submission to event<br /> |Event=ODP at ISWC 2010<br /> }}</div>

VinayChaudhri http://ontologydesignpatterns.org/index.php?title=Community:Causal_information_and_proportionality&diff=10231 2010-10-05T01:33:38Z

<p>VinayChaudhri: Representing explanation knowledge and qualitative proportionality</p> <hr /> <div>{{TitleDescription Template<br /> |Title=Causal information and proportionality<br /> |Description=Consider the following paragraph:<br /> <br /> The logistics of carrying out metabolism set limits on cell size. <br /> Metabolic requirements also impose upper limits on the size that is practical for a single cell. As an object of a particular shape increases in size, its volume grows proportionately more than its surface area. Metabolic requirements also impose upper limits on the size that is practical for a single cell. As an object of a particular shape increases in size, its volume grows proportionately more than its surface area. Thus, the smaller the object, the greater its ratio of surface area to volume. A high surface-to-volume ratio facilitates the exchange of materials between a cell and its environment.<br /> <br /> <br /> <br /> <br /> }}<br /> {{Graphical representation}}<br /> {{Modeling Issue Template<br /> |Author=Vinay K Chaudhri<br /> |Domain=Biology<br /> |CompetencyQuestion=What factors limit the cell size?<br /> Why are cells so small?<br /> Why cant cells have a diameter of 1 meters?<br /> }}<br /> {{Additional information header}}<br /> This problem arose in the context of modeling textbook knowledge for Project Halo. http://www.projecthalo.com<br /> {{My references}}<br /> {{Modeling Issue toolbar}}<br /> {{Submission to event<br /> |Event=ODP 2010 at ISWC 2010<br /> }}</div>

VinayChaudhri http://ontologydesignpatterns.org/index.php?title=Community:Parts_that_create_compartments_in_an_entity&diff=10230 2010-10-05T00:57:04Z

<p>VinayChaudhri: </p> <hr /> <div>{{TitleDescription Template<br /> |Title=Compartments in an Entity<br /> |Description=Consider the sentence: ``Internal membranes compartmentalize the functions of a eukaryotic cell.'' The existing ontologies provide ways of stating parts of an entity. But in this example, we need to state parts that create disjoint compartments within an entity.<br /> }}<br /> {{Graphical representation}}<br /> {{Modeling Issue Template<br /> |Author=Vinay K Chaudhri<br /> |Domain=Biology<br /> |CompetencyQuestion=How is it possible that incompatible processes can simultaneously go on within a Eukaryotic cell?<br /> <br /> ---&gt; That is because the cell membranes compartmentalize a cell into disjoint chambers<br /> ---&gt; Therefore, the process going on in one chamber does not affect another<br /> }}<br /> {{Additional information header}}<br /> This problem arose in the context of representing knowledge in a Biology textbook in the context of Project Halo (http://www.projecthalo.com)<br /> {{My references}}<br /> {{Modeling Issue toolbar}}<br /> {{Submission to event<br /> |Event=ODP 2010 at ISWC 2010<br /> }}</div>

VinayChaudhri http://ontologydesignpatterns.org/index.php?title=Community:Parts_that_create_compartments_in_an_entity&diff=10229 2010-10-05T00:54:26Z

<p>VinayChaudhri: An ontological relation to create partitions within an entity</p> <hr /> <div>{{TitleDescription Template<br /> |Title=Compartments in an Entity<br /> |Description=Consider the sentence: ``Internal membranes compartmentalize the functions of a eukaryotic cell.'' The existing ontologies provide ways of stating parts of an entity. But in this example, we need to state parts that create disjoint compartments within an entity.<br /> }}<br /> {{Graphical representation}}<br /> {{Modeling Issue Template}}<br /> {{Additional information header}}<br /> <br /> {{My references}}<br /> {{Modeling Issue toolbar}}</div>

VinayChaudhri