{"id":18,"date":"2017-07-07T20:21:08","date_gmt":"2017-07-07T20:21:08","guid":{"rendered":"http:\/\/utsaengineer.wpengine.com\/faculty-page-example\/?page_id=18"},"modified":"2026-04-10T17:21:58","modified_gmt":"2026-04-10T22:21:58","slug":"students","status":"publish","type":"page","link":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/","title":{"rendered":"Students"},"content":{"rendered":"<h2>Current Ph.D. Students<\/h2>\n<ul>\n<li>Margarita Loupa \u2014\u2009 Optimization of Power Systems and Coupled Critical Infrastructures (Transportation, Water Networks)<\/li>\n<li>Junwhan Lee\u00a0(co-advised with\u00a0<a href=\"http:\/\/ece.utsa.edu\/contact\/faculty\/david-akopian.html\">D. Akopian<\/a>) \u2009\u2014\u2009 GPS Spoofing Detection and Mitigation<\/li>\n<li>\u00a0Ahmed Almoola\u2009\u2014\u2009Protection of Inverter-Integrated Power Systems<\/li>\n<li>Chinwe Aghadinuno \u2014\u2009 Impacts of Data Centers on the Electric Power Grid<\/li>\n<\/ul>\n<h2>Former Ph.D. Students<\/h2>\n<ul>\n<li>Venkatanaga Amrusha Aryasomyajula (Hitachi Energy)<\/li>\n<li>Krishna Sandeep Ayyagari (1898 &amp; Co, Part of Burns &amp; McDonnel)\n<ul style=\"list-style-type: circle\">\n<li>Dissertation: Optimal Coordination of Power Distribution Networks with Building Operations and Pump Scheduling in Water Distribution Systems<\/li>\n<\/ul>\n<\/li>\n<li>Paresh Risbud (Research Fellow at National University of Singapore)\n<ul style=\"list-style-type: circle\">\n<li><em>Dissertation:<\/em> Detection and Mitigation of GPS Spoofing Attacks on Smart Grids<\/li>\n<\/ul>\n<\/li>\n<li>Mohammadhafez Bazrafshan (Enverus)\n<ul style=\"list-style-type: circle\">\n<li><em>Dissertation:<\/em>\u00a0Modeling and Optimization of Electrical Power Networks<\/li>\n<\/ul>\n<\/li>\n<li>Ali Khalajmehrabadi (co-advised with\u00a0<a href=\"http:\/\/ece.utsa.edu\/contact\/faculty\/david-akopian.html\">D. Akopian<\/a>) \u2009(GNSS Sr. Software Engineer at Samsung Semiconductor\u00a0Inc., USA)\n<ul style=\"list-style-type: circle\">\n<li><em>Dissertation:<\/em>\u00a0Optimization Techniques for Robust Positioning, Timing,<br \/>\nand Security<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Former M.S. Students<\/h2>\n<ul>\n<li>Ahmed Almoola (Ph.D., UTSA)<\/li>\n<li>Varun Risbud (Garver)<\/li>\n<li>Mohammadhafez Bazrafshan (Ph.D., UTSA)\n<ul style=\"list-style-type: circle\">\n<li><em>Thesis:<\/em>\u00a0<a href=\"http:\/\/pqdtopen.proquest.com\/pubnum\/1565173.html\">Stochastic optimization for power management in radial distribution networks with renewable photovoltaic generation<\/a><br \/>\n<b>Outstanding Graduate Research Award Recipient by the UTSA Dept. of ECE for Academic Year 2013\u20132014<\/b><\/li>\n<\/ul>\n<\/li>\n<li>Likhitha Yalamanchili (Staff Software Engineer at E*TRADE)\n<ul style=\"list-style-type: circle\">\n<li><em>Thesis:<\/em> Analytical Model for Placing and Sizing Photovoltaic Systems in Distribution Networks<\/li>\n<\/ul>\n<\/li>\n<li>Ankur Pipri (Electrical Design Engineer, KDM Engineering, Chicago, IL)\n<ul style=\"list-style-type: circle\">\n<li><em>Thesis:<\/em> Framework for Optimization and Control in Buildings-to-Grid Integration<\/li>\n<\/ul>\n<\/li>\n<li>Krishna Sandeep Ayyagari \u2009(Ph.D., UTSA)\n<ul style=\"list-style-type: circle\">\n<li><em>Thesis:<\/em> Chance Constrained Voltage Regulation Via Affine Inverter Control Policies<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<div id=\"footer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Current Ph.D. Students Margarita Loupa \u2014\u2009 Optimization of Power Systems and Coupled Critical Infrastructures (Transportation, Water Networks) Junwhan Lee\u00a0(co-advised with\u00a0D. Akopian) \u2009\u2014\u2009 GPS Spoofing Detection and Mitigation \u00a0Ahmed Almoola\u2009\u2014\u2009Protection of Inverter-Integrated Power Systems Chinwe Aghadinuno \u2014\u2009 Impacts of Data Centers on the Electric Power Grid Former Ph.D. Students Venkatanaga Amrusha Aryasomyajula (Hitachi Energy) Krishna Sandeep &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/ceid.utsa.edu\/ngatsis\/students\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Students&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-18","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Students - Nikolaos Gatsis<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ceid.utsa.edu\/ngatsis\/students\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Students - Nikolaos Gatsis\" \/>\n<meta property=\"og:description\" content=\"Current Ph.D. Students Margarita Loupa \u2014\u2009 Optimization of Power Systems and Coupled Critical Infrastructures (Transportation, Water Networks) Junwhan Lee\u00a0(co-advised with\u00a0D. Akopian) \u2009\u2014\u2009 GPS Spoofing Detection and Mitigation \u00a0Ahmed Almoola\u2009\u2014\u2009Protection of Inverter-Integrated Power Systems Chinwe Aghadinuno \u2014\u2009 Impacts of Data Centers on the Electric Power Grid Former Ph.D. Students Venkatanaga Amrusha Aryasomyajula (Hitachi Energy) Krishna Sandeep &hellip; Continue reading &quot;Students&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ceid.utsa.edu\/ngatsis\/students\/\" \/>\n<meta property=\"og:site_name\" content=\"Nikolaos Gatsis\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-10T22:21:58+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/students\\\/\",\"url\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/students\\\/\",\"name\":\"Students - Nikolaos Gatsis\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#website\"},\"datePublished\":\"2017-07-07T20:21:08+00:00\",\"dateModified\":\"2026-04-10T22:21:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/students\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/students\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/students\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Students\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#website\",\"url\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/\",\"name\":\"Nikolaos Gatsis\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#organization\",\"name\":\"UTSA College of Engineering\",\"url\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2017\\\/07\\\/cropped-COE-Casual-single.png\",\"contentUrl\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/wp-content\\\/uploads\\\/sites\\\/31\\\/2017\\\/07\\\/cropped-COE-Casual-single.png\",\"width\":1932,\"height\":250,\"caption\":\"UTSA College of Engineering\"},\"image\":{\"@id\":\"https:\\\/\\\/ceid.utsa.edu\\\/ngatsis\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Students - Nikolaos Gatsis","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/","og_locale":"en_US","og_type":"article","og_title":"Students - Nikolaos Gatsis","og_description":"Current Ph.D. Students Margarita Loupa \u2014\u2009 Optimization of Power Systems and Coupled Critical Infrastructures (Transportation, Water Networks) Junwhan Lee\u00a0(co-advised with\u00a0D. Akopian) \u2009\u2014\u2009 GPS Spoofing Detection and Mitigation \u00a0Ahmed Almoola\u2009\u2014\u2009Protection of Inverter-Integrated Power Systems Chinwe Aghadinuno \u2014\u2009 Impacts of Data Centers on the Electric Power Grid Former Ph.D. Students Venkatanaga Amrusha Aryasomyajula (Hitachi Energy) Krishna Sandeep &hellip; Continue reading \"Students\"","og_url":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/","og_site_name":"Nikolaos Gatsis","article_modified_time":"2026-04-10T22:21:58+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/","url":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/","name":"Students - Nikolaos Gatsis","isPartOf":{"@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#website"},"datePublished":"2017-07-07T20:21:08+00:00","dateModified":"2026-04-10T22:21:58+00:00","breadcrumb":{"@id":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ceid.utsa.edu\/ngatsis\/students\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/ceid.utsa.edu\/ngatsis\/students\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ceid.utsa.edu\/ngatsis\/"},{"@type":"ListItem","position":2,"name":"Students"}]},{"@type":"WebSite","@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#website","url":"https:\/\/ceid.utsa.edu\/ngatsis\/","name":"Nikolaos Gatsis","description":"","publisher":{"@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ceid.utsa.edu\/ngatsis\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#organization","name":"UTSA College of Engineering","url":"https:\/\/ceid.utsa.edu\/ngatsis\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#\/schema\/logo\/image\/","url":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-content\/uploads\/sites\/31\/2017\/07\/cropped-COE-Casual-single.png","contentUrl":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-content\/uploads\/sites\/31\/2017\/07\/cropped-COE-Casual-single.png","width":1932,"height":250,"caption":"UTSA College of Engineering"},"image":{"@id":"https:\/\/ceid.utsa.edu\/ngatsis\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/pages\/18","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":0,"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/pages\/18\/revisions"}],"wp:attachment":[{"href":"https:\/\/ceid.utsa.edu\/ngatsis\/wp-json\/wp\/v2\/media?parent=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}