diff --git a/research_problem_overview_new_version_for_the_paper.bmp b/research_problem_overview_new_version_for_the_paper.bmp
index e612fc5b0c6c5106175f4b1bcff93f70c5d76132..f1811bb0f0826c056070213e6ec3869fc50b96b0 100644
Binary files a/research_problem_overview_new_version_for_the_paper.bmp and b/research_problem_overview_new_version_for_the_paper.bmp differ
diff --git a/research_problem_overview_new_version_for_the_paper.graphml b/research_problem_overview_new_version_for_the_paper.graphml
index ebf7b3e4f4d69d7d25b7fecc70c3719a1f52da41..1297a5c11155914085a1d90b829e2f49b049bb11 100644
--- a/research_problem_overview_new_version_for_the_paper.graphml
+++ b/research_problem_overview_new_version_for_the_paper.graphml
@@ -1074,7 +1074,7 @@ on the Phone<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel>
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+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="45.90625" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="63.4931640625" x="-21.74658203125" xml:space="preserve" y="22.09375">Little 
 core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:ModelParameter><y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.5" nodeRatioX="0.0" nodeRatioY="0.5" offsetX="0.0" offsetY="-4.0" upX="0.0" upY="-1.0"/></y:ModelParameter></y:NodeLabel>
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@@ -1086,7 +1086,7 @@ core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:Model
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           <y:Fill hasColor="false" transparent="false"/>
           <y:BorderStyle hasColor="false" raised="false" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="45.90625" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="54.94140625" x="-17.470703125" xml:space="preserve" y="22.09375">Little 
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="45.90625" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="63.4931640625" x="-21.74658203125" xml:space="preserve" y="22.09375">Little 
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           <y:Shape type="rectangle"/>
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@@ -1098,7 +1098,7 @@ core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:Model
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           <y:Fill hasColor="false" transparent="false"/>
           <y:BorderStyle hasColor="false" raised="false" type="line" width="1.0"/>
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           <y:Shape type="rectangle"/>
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@@ -1107,11 +1107,10 @@ core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:Model
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-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="plain" hasBackgroundColor="false" hasLineColor="false" height="45.90625" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="43.3837890625" x="-11.69189453125" xml:space="preserve" y="22.09375">Big
-core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:ModelParameter><y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.5" nodeRatioX="0.0" nodeRatioY="0.5" offsetX="0.0" offsetY="-4.0" upX="0.0" upY="-1.0"/></y:ModelParameter></y:NodeLabel>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="24.953125" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="130.0263671875" x="12.611816406250114" xml:space="preserve" y="7.046875">Little socket<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:ModelParameter><y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.5" nodeRatioX="0.0" nodeRatioY="0.5" offsetX="0.0" offsetY="-4.0" upX="0.0" upY="-1.0"/></y:ModelParameter></y:NodeLabel>
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@@ -1200,6 +1199,17 @@ core<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:Model
         </y:ImageNode>
       </data>
     </node>
+    <node id="n78">
+      <data key="d6">
+        <y:ShapeNode>
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+          <y:Fill hasColor="false" transparent="false"/>
+          <y:BorderStyle hasColor="false" raised="false" type="line" width="1.0"/>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="18" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="24.953125" horizontalTextPosition="center" iconTextGap="4" modelName="custom" textColor="#000000" verticalTextPosition="bottom" visible="true" width="109.57421875" x="22.837890625000114" xml:space="preserve" y="7.046875">Big socket<y:LabelModel><y:SmartNodeLabelModel distance="4.0"/></y:LabelModel><y:ModelParameter><y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.5" nodeRatioX="0.0" nodeRatioY="0.5" offsetX="0.0" offsetY="-4.0" upX="0.0" upY="-1.0"/></y:ModelParameter></y:NodeLabel>
+          <y:Shape type="rectangle"/>
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+      </data>
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     <edge id="e0" source="n11" target="n12">
       <data key="d9"/>
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