UMIT ISIKDAGACADEMIC PERSONAL VCARD
.01

ABOUT

PERSONAL DETAILS
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umit.isikdag@msgsu.edu.tr
+902122460011-6100
Professor of Construction Informatics at the Department of Informatics- Mimar Sinan Fine Arts University

BIO

ABOUT ME/HOSGELDİNİZ

I hold a BSc. degree from Balıkesir University.My MSc research was about AI (Expert Systems) which I completed in 1999 and my Ph.D. research was about BIM-3D GIS integration which I completed in 2007. My current research interests are in Machine and Deep Learning, Internet of Things, 3D GIS, BIM and Structural Equation Modeling.Teaching: I have started teaching in 1999 and since then I have given lectures at Ege University, Beykent University, Istanbul Kultur University, Istanbul University, Istanbul Esenyurt University, Istanbul Technical University, Bogazici University.Guest Lectures: I have given guest lectures in TU Delft, Universiti Teknologi Malaysia, Hft Stuttgart, Istanbul Technical University, Yildiz Technical University, and Balikesir University.My Supervisors: Prof.Ghassan Aouad , Prof.Jason Underwood ve Dr.Nigel Trodd(PhD.) Prof.Keith Jones,Robert Falconer(MSc.)

This site will be under constant construction for some time. Please check the links section 2nd tab ->Academia.edu to see all my publications in the mean time. To get more information about the International Journal of Digital Innovation in Built Environment please check 3rd tab.

Öncelikle web sayfamı ziyaret ettiğiniz için çok teşekkür ederim. Mimar Sinan Üniversitesi Enformatik bölümünde öğretim üyesi olarak görev yapmaktayım. İnşaat Mühendisliği lisans derecesi sahibiyim. Yüksek Lisans ve Doktora çalışmalarım İnşaat Bilişimi alanındadır.Doçentlik alanım İnşaat Mühendisliğidir. Bilimsel araştırma ve ilgi alanlarım arasında Yapı Bilgi Modelleme (IFC), Coğrafi Bilgi Sistemleri,Web CBS, Sayısal Kent Modelleri(CityGML,CityJSON), 3B Kadastro ve Gayrimenkul Değerleme(LADM ve LADM Valuation),Yapay Zeka,Makine Öğrenmesi ve Derin Öğrenme,Nesnelerin İnterneti,Ölçek Geliştirme ve Yapısal Eşitlik Modellemesi, Veri Görselleştirme bulunmaktadır. Site ziyaretçilerin büyük yoğunluğunun ülkemiz dışından olması nedeni site İngilizce olarak tasarlanmıştır.İlgi alanlarım içine giren tüm konularda iletişim formunu kullanarak benimle irtibat kurabilirsiniz.Saygılarımla.

JOURNALS

EDITORSHIP

International Journal of Digital Innovation in the Built Environment

The International Journal of Digital Innovation in the Built Environment (IJDIBE) provides new techniques and technologies for the optimization of performance, sustainability, and durability of new and existing buildings and infrastructure within a connected and sustainable built environment. It focuses on research domains ranging from digital design, construction and operations to smart and sustainable buildings, infrastructure, and cities, including building, infrastructure, and city level information modeling, resilient design, machine learning, and digital twins, covering all spatial contexts related to the urban and digital built environment. IJDIBE facilitates the exchange of current scientific information, as well as shares state-of-the art technological and innovative developments within the architecture, engineering, and construction (AEC) industry and urban and digital built environment. The journal provides a forum for information dissemination between academics and professionals associated with building and infrastructure lifecycle management, city planning and management, infrastructure management, all disciplines of geosciences, building and civil engineering, disaster management, logistics, environmental planning and conservation, computer graphics, data management, gaming, and so forth. In addition to academics, the primary audience of the journal also includes engineering, architectural, contracting, consultant, and facility management practitioners. IJDIBE publishes original research articles, case studies, reviews and best practices, and applications, including mathematical models and algorithms. The journal covers the topics below within Building Sciences and Urban Built Environment perspectives. Please click on the title to visit the journal homepage.

Yapı Bilgi Modelleme

Yapı Bilgi Modelleme M.S.G.S.Ü Enformatik Bölümü tarafından hazırlanan hakemli bir bilimsel dergidir. Dergimiz Yapı Bilgi Modelleme konusunda akademik çalışmaların akademi ve sektördeki paydaşlar ile paylaşılması için açık kaynak bir ortam olma hedefini taşımaktadır. Yapı Bilgi Modelleme konusuda akademik çalışmalar ve sektör uygulamalarına ait bilimsel makaleler kabul edilmektedir. Dergi sayfasına ulaşmak için isme tıklayınız.
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RESUME

EDUCATION
  • 2001
    2007
    MANCHESTER

    CONSTRUCTION INFORMATION TECHNOLOGY - PHD

    UNIVERSITY OF SALFORD

    Studied the Integration of IFC (BIM) and GIS
  • 1998
    1999
    LONDON

    CONSTRUCTION INFORMATION TECHNOLOGY - MSC

    UNIVERSITY OF GREENWICH

    Studied AI for Bridge Design
  • 1994
    1998
    BALIKESIR

    CIVIL ENGINEERING-BSC

    BALIKESIR UNIVERSITY

ACADEMIC AND PROFESSIONAL POSITIONS
  • 2020
    Istanbul

    PROFESSOR

    Mimar Sinan Fine Arts University

    Department of Informatics. Chair of MSc. in Architectural and Urban Informatics
  • 2015
    2020
    ISTANBUL

    ASSOCIATE PROFESSOR

    Mimar Sinan Fine Arts University

    Department of Informatics. Chair of MSc. in Architectural and Urban Informatics
  • 2010
    2015
    ISTANBUL

    ASSISTANT PROFESSOR

    BEYKENT UNIVERSITY

    Chair of Software Engineering / Chair of Institue of Science
  • 2013
    2014
    PRESTON

    SENIOR RESEARCH FELLOW

    UNIVERSITY OF CENTRAL LANCASHIRE

    School of Built Environment
  • 2004
    2004
    COVENTRY

    RESEARCH FELLOW

    COVENTRY UNIVERSITY

    EU FP6 Project Intelcities
.03

PUBLICATIONS

PUBLICATIONS LIST
SORTING BY DATE
01 Aug 2004

A survey of ICT use in the Turkish construction industry

Engineering Construction Architectural Management

SCOPUS

JOURNAL PAPERS Marjan Sarshar,Ümit Işıkdağ

A survey of ICT use in the Turkish construction industry

Marjan Sarshar,Ümit Işıkdağ
JOURNAL PAPERS
About The Publication
This paper assesses the awareness and use of information and communication technologies (ICT) systems within the Turkish construction industry. The findings will assist in identifying the future directions and priorities for how to use ICT as an enabler in this country. The research has been carried out via 22 semi‐structured interviews with senior construction professionals within government and private organizations. It investigated the usage and applicability of current information systems and technologies. The interviews then explored the appropriateness of some of the newly emerging technologies to the industry in Turkey. The findings are reported under three categories of: ICT infrastructures and strategies, the use of information systems, and views on emerging technologies. The last item has been expanded and discussed in more detail, in the paper. View Full Text
01 Jun 2007

Investigating the Role of Building Information Models as a Part of an Integrated Data Layer: A Fire Response Management Case

Architectural Engineering and Design Management

SCOPUS

JOURNAL PAPERS Umit Isikdag, Jason Underwood,Ghassan Aouad,Nigel Trodd

Investigating the Role of Building Information Models as a Part of an Integrated Data Layer: A Fire Response Management Case

Umit Isikdag, Jason Underwood,Ghassan Aouad,Nigel Trodd
JOURNAL PAPERS
About The Publication
Building information modelling has emerged to address the issues associated with information integration and interoperability in the architectural, engineering and construction (AEC) industry. Today, building information models (BIMs) have become capable of representing detailed geometrical and semantic information about building elements. On the other hand, some urban management tasks, such as disaster management, delivery of goods and services, and cityscape visualization, are managed by using a geographic information system (GIS) as the current state-of-the-art system, as these tasks require a high level and volume of integrated geospatial information. Several of these tasks, such as fire response management, also require detailed geometrical and semantic information about buildings in order to become facilitated through better automation. In this context, this paper first presents an approach proposed for integrating building and geospatial information models and later presents a fire response management case where the integration approach is implemented. The paper starts with a summary of the background on building information modelling and the role of GIS in fire response management before providing an introduction to the software systems integration and the concept of integrated data layers. The paper then explains the integrated data layers approach proposed during the research and the implementation of the approach in the domain of fire response management. The research results confirmed that the proposed approach is applicable in the domain of fire response management and further investigation demonstrated that the use of BIMs as part of an integrated data layer enables the fire response management process to be facilitated through better automation. View Full Text
01 Aug 2011

Reflections on the 2008 US Presidential Election in the Turkish Blogosphere

International Journal of Interactive Communication Systems and Technologies


JOURNAL PAPERS Mehmet Yılmaz, Ümit Işıkdağ

Reflections on the 2008 US Presidential Election in the Turkish Blogosphere

Mehmet Yılmaz, Ümit Işıkdağ
JOURNAL PAPERS
About The Publication
The current study presents the results of a research investigation into the role of political blogs in the international political communication process by focusing on the 2008 U.S. presidential election and its reflection in the Turkish blogosphere. Four types of analysis were carried out in order to (a) evaluate the overall blogosphere’s reaction in Turkey towards the U.S. presidential candidates; (b) measure the awareness of Internet audience in Turkey about the candidates; (c) identify the main themes of discourse in the Turkish blogosphere; and (d) determine the level of interactivity in blogs in the discussion of the candidates. A total of 205 political blogs were examined. The findings indicate that a direct relationship between the level of online activity of the candidates and the number of blog entries and comments. View Full Text
01 Aug 2009

Construction informatics in Turkey: strategic role of ICT and future research directions

Journal of Information Technology in Construction

SCOPUS

JOURNAL PAPERS Umit Isikdag, Jason Underwood, Murat Kuruoglu, Jack Goulding,Utku Acikalin

Construction informatics in Turkey: strategic role of ICT and future research directions

Umit Isikdag, Jason Underwood, Murat Kuruoglu, Jack Goulding,Utku Acikalin
JOURNAL PAPERS
About The Publication
Construction Informatics deals with subjects ranging from strategic management of ICTs to interoperability and information integration in the construction industry. Studies on defining research directions for Construction Informatics have a history over 20 years. The recent studies in the area highlight the priority themes for Construction Informatics research as interoperability, collaboration support, intelligent sites and knowledge sharing. In parallel, today it is widely accepted in the Architecture / Engineering / Construction (AEC) industry that ICT is becoming a strategic asset for any organisation to deliver business improvement and achieve sustainable competitive advantage. However, traditionally the AEC industry has approached investing in ICT with a lack of strategic focus and low level of priority to the business. This paper presents a recent study from Turkey that is focused on two themes. The first theme investigates the strategic role of ICT implementations from an industrial perspective, and explores if organisations within the AEC industry view ICT as a strategic resource for their business practice. The second theme investigates the ‘perspective of academia’ in terms of future research directions of Construction Informatics. The results of the industrial study indicates that ICT is seen as a value-adding resource, but a shift towards the recognition of the importance of ICT in terms of value adding in winning work and achieving strategic competitive advantage is observed. On the other hand, ICT Training is found to be the theme of highest priority from the academia point of view. View Full Text
01 Oct 2008

An investigation into the applicability of building information models in geospatial environment in support of site selection and fire response management processes

Advanced Engineering Informatics

SCIE

JOURNAL PAPERS Ümit Işıkdağ,Jason Underwood,Ghassan Aouad

An investigation into the applicability of building information models in geospatial environment in support of site selection and fire response management processes

Ümit Işıkdağ,Jason Underwood,Ghassan Aouad
JOURNAL PAPERS
About The Publication
Some tasks in the construction industry and urban management field such as site selection and fire response management are usually managed by using a Geographical Information System (GIS), as the tasks in these processes require a high level and amount of integrated geospatial information. Recently, a key element of this integrated geospatial information to emerge is detailed geometrical and semantic information about buildings. In parallel, Building Information Models (BIMs) of today have the capacity for storing and representing such detailed geometrical and semantic information. In this context, the research aimed to investigate the applicability of BIMs in geospatial environment by focusing specifically on these two domains; site selection and fire response management. In the first phase of the research two use case scenarios were developed in order to understand the processes in these domains in a more detailed manner and to establish the scope of a possible software development for transferring information from BIMs into the geospatial environment. In the following phase of the research two data models were developed – a Schema-Level Model View and a geospatial data model. The Schema-Level Model View was used in simplifying the information acquired from the BIM, while the geospatial data model acted as the template for creating physical files and databases in the geospatial environment. Following this, three software components to transfer building information into the geospatial environment were designed, developed, and validated. The first component served for acquiring the building information from the BIM, while the latter two served for transforming the information into the geospatial environment.The overall research demonstrated that it is possible to transfer (high level of geometric and semantic) information acquired from BIMs into the geospatial environment. The results also demonstrated that BIMs provide a sufficient level and amount of (geometric and semantic) information (about the building) for the seamless automation of data management tasks in the site selection and fire response management processes. View Full Text
01 Aug 2010

Two design patterns for facilitating Building Information Model-based synchronous collaboration

Automation in Construction

SCIE

JOURNAL PAPERS Umit Isikdag, Jason Underwood

Two design patterns for facilitating Building Information Model-based synchronous collaboration

Umit Isikdag, Jason Underwood
JOURNAL PAPERS
About The Publication
The traditional fragmented nature of the construction industry along with the ad hoc matter in which investments in ICT have been made has resulted in a key cause of the poor performance and inefficiencies of the industry being attributed to the communication and exchange of information. The concept of Building Information Modelling (BIM) emerged to address the seamless exchange of information throughout the life of a facility following early modelling efforts focused on providing a solution to data exchange problems between several CAD and analysis systems. On the other hand, ICT supported collaborative teamwork has been an important aspect of building lifecycle management over the years in order to address the problems related to the fragmented nature of the industry. In parallel, recent studies in the field have demonstrated that BIMs will play an important role in facilitating collaboration. Most of the studies related to collaborative computing in construction have focused on facilitating the coordination and communication aspects of collaboration. In contrast, this paper proposes a system level and BIM-based approach for facilitating collaboration through the entire lifecycle of the building. In this context, the paper presents two design patterns that can be used as a foundation in formulating the design of information systems for BIM-based synchronous collaboration. The proposed patterns will help the system analysts/designers to focus on a system level picture when tackling recurring problems in the design of collaborative environments. Following a brief summary on the history of information modelling in the construction industry, this paper reviews the storage and exchange mechanisms of BIMs and then proposes two design patterns as a means to facilitating model-based synchronous collaboration. View Full Text
12 Jul 2011

Emerging technologies for BIM 2.0

Construction Innovation

SCOPUS

JOURNAL PAPERS Jason Underwood,Umit Isikdag

Emerging technologies for BIM 2.0

Jason Underwood,Umit Isikdag
JOURNAL PAPERS
About The Publication
Purpose ‐ This paper aims to present a new perspective regarding how newly emerging ICT may have an impact on Building Information Modelling and Management (BIM-M); specifically, towards enabling the next generation of (full state) BIMs. Design/methodology/approach ‐ The paper presents a literature and technology review, and articulates a novel vision for the future of BIM. It starts with exploring how ICT has had an impact on shaping and modernising the sector, compared to the “traditional”, “archaic” and “draconian” heritage. The paper elaborates on the current interpretation of BIM-M and emerging technologies that may change this interpretation from a semantic model to a full state digital building model evolving through the lifecycle of a building. Findings ‐ The vision presented in this paper underlines the focus that BIM-M is now becoming broader, as the information management paradigm shifts from enabling model-based management of shared building information, which provides meaningful data about a building in a standardised way (i.e. BIM 1.0), to enable an integrated environment of distributed information which is always up to date and open for derivation of new information (i.e. BIM 2.0). Technologies such as cloud computing, sensor networks, stateless web services and semantic web are presented as the new facilitators of this paradigm shift. Originality/value ‐ This paper provides value by stipulating a new vision (i.e. BIM 2.0) for BIM-M and BIM (in particular) in light of emerging technologies such as cloud computing, sensor networks and semantic webs. View Full Text
01 Jan 2012

The examination of performance management concept in the construction industry

E-Journal of New World Sciences Academy


JOURNAL PAPERS Volkan Ezcan,Ugur Mungen,Murat Kuruoglu,Umit Isikdag

The examination of performance management concept in the construction industry

Volkan Ezcan,Ugur Mungen,Murat Kuruoglu,Umit Isikdag
JOURNAL PAPERS
About The Publication
ABSTRACT The performance concept is of vital importance to the Construction Sector as it is for the whole production industry. The aim of this paper is to analyze the aspects of performance concept for the construction management researchers, which will help to; 1) reveal the areas of condensation and 2) determine the emerging topics. The paper maps research trends and identifies gaps in current knowledge for future research, based on the literature review’s findings consisting of 453 papers that were published in top-ranked construction management journals. View Full Text
01 Aug 2012

Design patterns for BIM-based service-oriented architectures

Automation in Construction

SCIE

JOURNAL PAPERS Umit Isikdag

Design patterns for BIM-based service-oriented architectures

Umit Isikdag
JOURNAL PAPERS
About The Publication
Today Integrated Project Delivery together with Building Information Modeling is being realized as a process of managing a project over a single shared information backbone. In the near future, Building Information Models (BIMs) will be used as unique resources for enabling seamless data level interoperability, which will greatly facilitate the processes in the Building Life Cycle. In this context, enabling the collaborative use of BIMs is becoming essential and is much required by the industry for addressing the issues associated with the poor efficiencies in Information Systems (IS) and productivity. On the other hand, in the new IS architectures, service and resource orientation are becoming widely used, in terms of supporting collaboration over distributed environments. This paper introduces three design patterns which will help in facilitating BIM-based information sharing over the web, and web-based collaborative use of the BIMs. The patterns were developed to formalize the approaches in interacting with the shared BIMs over the web. The first pattern – BIM AJAX – explains how AJAX techniques can be used for supporting information retrieval from BIMs. The second pattern – BIM SOAP Façade – provides a standard coarse-grained interface to reach multiple BIMs over the web. The third pattern – RESTful BIM – elaborates on how BIM-based systems can benefit from the REST (Resource Oriented) Architectures. The paper starts with providing an overview on Building Information Models focusing on their characteristics and functions. Following this, the conventional approaches for exchanging and sharing BIMs are presented. The third section elaborates on IS Integration, AJAX and Web Services. Finally, three design patterns that have been developed are presented and discussed in detail. View Full Text
01 Sep 2013

A BIM-Oriented Model for supporting indoor navigation requirements

Computers Environment and Urban Systems

SSCI

JOURNAL PAPERS Umit Isikdag, Sisi Zlatanova, Jason Underwood

A BIM-Oriented Model for supporting indoor navigation requirements

Umit Isikdag, Sisi Zlatanova, Jason Underwood
JOURNAL PAPERS
About The Publication
Existing indoor navigation approaches such as navigation based on 2D geometries and pre-defined routing remain insufficient for many applications such as emergency response, delivery, utility maintenance and facility management. The insufficiencies caused by existing navigation approaches can be overcome by making use of the advanced semantic and geometric information included in intelligent building models. A key example of such models is Building Information Models (BIMs) which contain detailed geometric and semantic information about buildings. In fact, the BIMs’ structure is very complex for facilitating navigation. This paper presents a new BIM Oriented Modeling methodology resulting in the definition of a new BIM based model (BO-IDM) dedicated for facilitating indoor navigation. The paper later describes the transformation of information from a standard BIM (IFC) into the new model (BO-IDM). The innovation aspects of BO-IDM can be summarized as follows: (i) it provides highly detailed semantic information for indoor navigation and (ii) it represents the non-geo-referenced structure and complex geometries of BIMs with ISO 19107 compliant representations. Therefore this model is well suited for indoor navigation View Full Text
01 Sep 2013

Data Integration Capability Evaluation of ERP Systems: A Construction Industry Perspective

International Journal of Enterprise Information Systems

SCOPUS

JOURNAL PAPERS Umit Isikdag, Jason Underwood, Murat Kuruoglu, Utku Acikalin

Data Integration Capability Evaluation of ERP Systems: A Construction Industry Perspective

Umit Isikdag, Jason Underwood, Murat Kuruoglu, Utku Acikalin
JOURNAL PAPERS
About The Publication
ERP implementations within large scale construction organizations have yielded more failures than successes. As a result of this high failure rate, the integration capability of ERP systems could not be fully understood and recognized by the construction (AEC) industry. The aim of the research presented in this paper was to investigate the role of ERP systems in enabling and facilitating Data Level Integration in construction industry organizations. In parallel with this aim, an ERP Data Level Integration Capability Matrix was developed as the metric for measuring the capability of ERP systems in enabling Data Level Integration. The matrix is validated with four case studies. The development of the matrix and the results of the case studies are presented in this paper View Full Text
01 Oct 2016

Energy Analysis of Wall Materials Using Building Information Modeling (BIM) of Public Buildings in the Tropical Climate Countries

Jurnal Teknologi

ESCI

JOURNAL PAPERS Aidin Nobahar Sadeghifam, Abdul Kadir Marsono , Iman Kiani, Umit Isikdag, Ali Asghar Bavafa, Sanaz Tabatabaee

Energy Analysis of Wall Materials Using Building Information Modeling (BIM) of Public Buildings in the Tropical Climate Countries

Aidin Nobahar Sadeghifam, Abdul Kadir Marsono , Iman Kiani, Umit Isikdag, Ali Asghar Bavafa, Sanaz Tabatabaee
JOURNAL PAPERS
About The Publication
During the previous two decades, the energy saving potential using systematic building management is considered to be important which should be considered through the building lifecycle. Among the wide range types of different buildings, Public buildings are considered as one of the biggest energy-consuming sector in the world and major part of this amount is used by the air conditioning system especially in tropical climates. The most effective decisions related to sustainable design of a building facility are made in the feasibility and early design stages. Building Information Modeling (BIM) can expedite this process and provide the opportunity of testing and assessing different design alternatives and materials selection that may impact on energy performance of buildings. This paper aims at evaluating the efficiency of various types of wall materials with regard to theirs properties on energy saving. The case study in this paper is modeled by means of BIM application and then simulated by software, which is appropriate for energy analysis. View Full Text
01 Mar 2017

An investigation on the attitudes towards adopting the design by coding paradigm

ITU A-Z

DAAI,AVERY

JOURNAL PAPERS Bülent Onur Turan,Kemal Şahin,Ümit Işıkdağ

An investigation on the attitudes towards adopting the design by coding paradigm

Bülent Onur Turan,Kemal Şahin,Ümit Işıkdağ
JOURNAL PAPERS
About The Publication
The recent developments in the digital technologies have led to an increase in the parametric modelling efforts and the use of parametric patterns in design. In order to manage this new paradigm where the design is becoming more digital, the designer needs to utilize his/her analytical abilities in an effective manner as this is the only way for precise representation of concepts in the actual design itself. The parametric design is a holistic process. A key element of this is the development of design through coding. In this context, the aim of the study was understanding the attitudes of architects and architecture students towards adoption of analytical/algorithmic methods and specifically the object oriented paradigm and design-by-coding. In the first stage a randomly selected group of volunteers were provided training in object oriented programming concepts and design-by-coding over 15 weeks (and a total of 45 hours). Later in this study two data collection tools were utilised to understand the attitudes of the participants towards design-by-coding. The first tool used was an attitude scale, while the second tool used was a web based questionnaire survey. The results indicate that the participants did not show a significant positive attitude towards design by coding. This result might have been caused by the difficulties faced during the study, as the participants were experiencing a design-by-coding exercise as the first time. In fact, it is also observed that algorithmic thinking and parametric design abilities of the designers can be enhanced by training on design-by-coding concepts. View Full Text
06 Jul 2018

Mapping the Processes of Donor-Funded Construction Projects

Sustainability

SCIE,SSCI

JOURNAL PAPERS Ihab Hijazi, Umit Isikdag ,Mohammed Abunemeh ,Xin Li,Mariam Hashash,Rani El Meouche,Sergen Cansiz

Mapping the Processes of Donor-Funded Construction Projects

Ihab Hijazi, Umit Isikdag ,Mohammed Abunemeh ,Xin Li,Mariam Hashash,Rani El Meouche,Sergen Cansiz
JOURNAL PAPERS
About The Publication
Public construction projects in countries with economic difficulties are funded by donor organizations. These types of projects in low-income countries have been negatively influenced by the communication gap between the among, consultant and the construction contractor, which emerges because of unclear definitions of responsibilities and problems in exchange of information. All stakeholders face significant problems as a result of this gap. The main objective of this paper is to identify and map the processes of donor-funded construction projects to facilitate clear definition of tasks and roles, and support sustainable communication in donor-funded projects. Following a literature review, the paper provides an analysis of the current processes in donor-funded projects and presents a process map for donor funded projects which is developed based on expert interviews and five case studies. Finally, the process map is validated by a set of semi-structured interviews. View Full Text
22 Aug 2018

Semi-Automatic 3D City Model Generation from Large-Format Aerial Images

International Journal of Geoinformation

SCIE

JOURNAL PAPERS Mehmet Büyükdemircioğlu, Sultan Kocaman, Ümit Işıkdağ

Semi-Automatic 3D City Model Generation from Large-Format Aerial Images

Mehmet Büyükdemircioğlu, Sultan Kocaman, Ümit Işıkdağ
JOURNAL PAPERS
About The Publication
3D city models have become crucial for better city management, and can be used for various purposes such as disaster management, navigation, solar potential computation and planning simulations. 3D city models are not only visual models, and they can also be used for thematic queries and analyzes with the help of semantic data. The models can be produced using different data sources and methods. In this study, vector basemaps and large-format aerial images, which are regularly produced in accordance with the large scale map production regulations in Turkey, have been used to develop a workflow for semi-automatic 3D city model generation. The aim of this study is to propose a procedure for the production of 3D city models from existing aerial photogrammetric datasets without additional data acquisition efforts and/or costly manual editing. To prove the methodology, a 3D city model has been generated with semi-automatic methods at LoD2 (Level of Detail 2) of CityGML (City Geographic Markup Language) using the data of the study area over Cesme Town of Izmir Province, Turkey. The generated model is automatically textured and additional developments have been performed for 3D visualization of the model on the web. The problems encountered throughout the study and approaches to solve them are presented here. Consequently, the approach introduced in this study yields promising results for low-cost 3D city model production with the data at hand. View Full Text
20 Oct 2018

Towards harmonizing property measurement standards

Journal of Spatial Information Science

ESCI

JOURNAL PAPERS Abdullah Kara, Volkan Çagdas, Ümit Işıkdağ, Bülent Onur Turan

Towards harmonizing property measurement standards

Abdullah Kara, Volkan Çagdas, Ümit Işıkdağ, Bülent Onur Turan
JOURNAL PAPERS
About The Publication
Area and volume values of buildings and building parts have been used in many applications including taxation, valuation and land use planning. Many countries maintain a national standard for representing the measurements of floor areas in buildings. The national standards generally use similar basis for measuring building floor areas, in fact, areas specified in national standards often have semantic differences. Therefore, a number of international standards have been developed for harmonizing floor area measurements; however, they also have differences. This study aims at harmonizing the floor areas defined in the international property measurement standards by revealing the semantic relations between them and formalizing them with an ontological approach. To achieve this objective , the international property measurement standards were firstly examined in order to identify semantics, principles and practices in floor area measurements. Then, the obtained information were utilized to develop a set of measurement ontologies for harmonizing the property measurement standards. This paper also investigates 3D data standards to reveal whether they can be utilized for realizing the property measurement standards. View Full Text
20 Oct 2019

Building Information Management (BIM), A New Approach to Project Management

Journal of Sustainable Construction Materials and Technologies


JOURNAL PAPERS Mustafa Nabi Kocakaya,Ersin Namlı,Ümit Işıkdağ

Building Information Management (BIM), A New Approach to Project Management

Mustafa Nabi Kocakaya,Ersin Namlı,Ümit Işıkdağ
JOURNAL PAPERS
About The Publication
Building Information Modeling/Management (BIM) technology has attracted the attention of many researchers and academicians as a new concept that has increased rapidly in the construction sector in recent years. The time-dependent changing society has affected the expectations and demands of the construction industry and triggered/resulted in the production of more complex and original projects accordingly. Building Information Modeling/Management (BIM) concept has become a necessity in today’s construction industry in terms of providing integration between project stakeholders and providing the possibility of processing and storing the project data in a common point. When international studies are examined, it is seen that the implementation of the Building Information Modeling/Management (BIM) approach is a mandatory job and/or task in the construction industries of the developed countries. It is observed that they follow this new trend in their rapidly developing countries. This study proposes a procurement framework based on the implementation of Building Information/Management (BIM) to achieve ‘best results’ in construction projects. A case study presented in this study proves the applicability and usefulness of the proposed Building Information Modeling/Management (BIM) approach in a complex construction project funded by the private sector. Contractual arrangements recommended for the project with an effective resource management approach, one of the basic principles of Building Information Modeling/Management (BIM); benefits such as improved productivity, better coordination and minimized errors and repetition of works. View Full Text
01 Feb 2020

An IoT Architecture for Facilitating Integration of GeoInformation

International Journal of Engineering and Geosciences

ESCI

JOURNAL PAPERS Selected Ümit Işıkdağ

An IoT Architecture for Facilitating Integration of GeoInformation

Ümit Işıkdağ
JOURNAL PAPERS Selected
About The Publication
Background: GeoInformation, is very valuable for a range of fields ranging from location based services and navigation to smart cities and homes. On the other hand today many fields benefit from Internet of Things (IoT) implementations, where the machine-to-machine and machine-to-human transmission of GeoInformation frequently occurs. This transmission usually occurs in multi-source/multi-target and multiplatform IoT environments. Problem Statement: In many cases real-time GeoInformation stays in its own island of automation, and thus its real value cannot be uncovered. This happens mainly due to inefficiencies and problems that occur in the storage, sharing and exchange of real-time GeoInformation as a result of multi-source/multi-target and multi-platform nature of the IoT architectures. Research Approach: Integration appears as a critical paradigm which should be focused in order to store, manage and transfer of GeoInformation efficiently in these complex environments. In this context, the focus of the study was to test the applicability of different technologies and integration methods for acquisition, transmission and visualisation of multi-source GeoInformation through implementing an IoT Integration Testbed Architecture which is utilizing low-cost hardware (to acquire information), graph databases(to store information) and standard IoT protocols (to exchange information). The implementation explained in this paper covers acquisition of real time GeoInformation from a set of real and virtual sensors, storage of this GeoInformation in Graph Databases, exchange of information through two different communication models (request/response and publish/subscribe) based on standard IoT protocols, and visualization of information by web pages, web mapping services and using a GIS software. Results: The implementation results demonstrated a proof-ofconcept on how multi-source GeoInformation acquired from different type of IoT nodes can be integrated, stored and visualised on different platforms by utilising a standard IoT communication paradigms and multiple communication models. View Full Text
20 Jan 2020

Spaces in Spatial Science and Urban Applications-State of the Art Review

International Journal of Geoinformation

SCIE

JOURNAL PAPERS Sisi Zlatanova,Jinjin Yan,Yijing Wang,Abdoulaye Diakité ,Umit Isikdag, George Sithole,Jack Barton

Spaces in Spatial Science and Urban Applications-State of the Art Review

Sisi Zlatanova,Jinjin Yan,Yijing Wang,Abdoulaye Diakité ,Umit Isikdag, George Sithole,Jack Barton
JOURNAL PAPERS
About The Publication
In spatial science and urban applications, “space” is presented by multiple disciplines as a notion referencing our living environment. Space is used as a general term to help understand particular characteristics of the environment. However, the definition and perception of space varies and these variations have to be harmonised. For example, space may have diverse definitions and classification, the same environment may be abstracted/modelled by contradicting notions of space, which can lead to inconsistencies and misunderstandings. In this paper, we seek to investigate and document the state-of-the-art in the research of “space” regarding its definition, classification, modelling and utilization (2D/3D) in spatial sciences and urban applications. We focus on positioning, navigation, building micro-climate and thermal comfort, landscape, urban planning and design, urban heat island, interior design and planning, transportation and intelligent space. We review 147 research papers, technical reports and on-line resources. We compare the presented space concepts with respect to five criteria—classification, boundary, modelling components, use of standards and granularity. The review inventory is intended for both scientists and professionals in the spatial industry, such as companies, national mapping agencies and governments, and aim to provide a reference to better understand and employ the “space” while working across disciplines. View Full Text
22 Jan 2020

3 Dimensional data research for property valuation in the context of the LADM Valuation Information Model

Land Use Policy

SSCI

JOURNAL PAPERS Abdullah Kara,Peter van Oosterom,Volkan Cagdas,Umit Isikdag,Chirstaan Lemmen

3 Dimensional data research for property valuation in the context of the LADM Valuation Information Model

Abdullah Kara,Peter van Oosterom,Volkan Cagdas,Umit Isikdag,Chirstaan Lemmen
JOURNAL PAPERS
About The Publication
Property valuation is a process that promotes sustainable development as it supports and forms several land management activities. Access to information on the legal, geometric, physical, locational and environmental characteristics of property units together with the economic indicators are required for an effective property valuation system. Traditional cadastral systems generally provide only two-dimensional (2D) legal and geometric information about property units, however, today’s valuation practices would benefit significantly from three-dimensional (3D) information in order better to estimate and explain values of property units. The purpose of this paper is to examine how 3D spatial datasets and spatial analyses have been used in property valuation, and to develop 3D valuation unit profile(s) in line with the examination results for the recently proposed Valuation Information Model that extends the ISO 19152:2012 Land Administration Domain Model (LADM) from the valuation point of view. The study focuses more on 3D locational and environmental characteristics of property units; particularly visibility and especially viewshed analysis in terms of property valuation. By using open topography, building and height datasets of the Netherlands, a number of viewshed analyses are conducted to show how it can be utilized using different 3D data sources. The main contribution of the article is to present how 3D datasets and spatial analyses could be used to support property valuation activities and to investigate to what extent it is possible and meaningful to include derived 3D characteristics of property units in valuation registries. View Full Text
20 Mar 2020

Sosyal bilimler araştırmacılarının istatistik paket programlarına karşı tutumları

Kastamonu Eğitim Dergisi

TR-DİZİN

JOURNAL PAPERS Ümit Işıkdağ,Sergen Cansız,Kemal Şahin

Sosyal bilimler araştırmacılarının istatistik paket programlarına karşı tutumları

Ümit Işıkdağ,Sergen Cansız,Kemal Şahin
JOURNAL PAPERS
About The Publication
İstatistik araçları sosyal bilimler araştırmalarında, araş-tırma kapsamında toplanılan verilerin analiz edilebilmesi için sıklıkla kullanılmaktır. Doğru ve geçerli bir analizin yapılabil-mesi için araştırmacıların, istatistik yöntemlerine, bu yöntemle-rin uygulanışına ve istatistiksel varsayımlara hâkim olmaları gerekmektedir. Bu çalışmada Sosyal bilimler araştırmacıları-nın, uygulamalı istatistikte hangi zorluklarla karşılaştıklarının ve istatistik yazılımlarında ne gibi eklentilere ihtiyaç duydukla-rının tespit edilmesi hedeflenmektedir. Bu hedef doğrultusunda belirlenen kriterlere uygun katılımcılar ile betimsel bir çalışma yürütülmüş sonucunda da Teknoloji Algı Ölçeği ile katılımcıla-rın istatistik paket programlarına karşı tutumları değerlendirilmiştir. Tam Metin
.04

TEACHING

CURRENT
  • NOW
    2020
    Istanbul

    PROFESSOR

    Mimar Sinan Fine Arts University

    Currently teaching at MSc. Architectural and Urban Informatics
TEACHING HISTORY
  • 2015
    2020
    İstanbul

    ASSOCIATE PROFESSOR

    Mimar Sinan Fine Arts Unviersity

    MSc. Architectural and Urban Informatics
  • 2009
    2015
    İstanbul

    ASSISTANT PROFESSOR

    Beykent University

    Department of MIS /Department of Software Engineering
  • 1999
    2001
    İzmir

    LECTURER

    Ege University

    Teaching at HND-Tire Kutsan MYO and Dept.of Civil Engineering
PART-TIME
  • 2018
    İstanbul

    PART-TIME TUTOR

    Istanbul Technical University

    BIM Course- Construction Management MSc.
  • 2017

    PART-TIME TUTOR

    Istanbul University

    BIM Course- Construction Management MSc.
  • 2019
    İstanbul

    PART-TIME TUTOR

    Bogazici University

    BIM Course- Construction Management MSc.
  • 2018
    2018

    PART-TIME TUTOR

    Istanbul Esenyurt University

    BSc Computer Engineering
  • 2012
    2014
    İstanbul

    PART-TIME TUTOR

    Istanbul Kultur University

    PM and Construction ICT Courses in MSc Construction Management
.05

TEACHING LOG

Course Name [Technology](University)

Ege University
+1998-1999 Academic Year
(HND) Visual Programming [VB]
(HND) Web Programming [ASP]
(HND) Introduction to Computer Science
(HND) Computer Networks
+1999-2000 Academic Year
(BSc) Construction Information Technology

Beykent University
2009-2010 Academic Year
(BSc) Systems Analysis and Design [UML]
(BSc) E-Commerce and E-Business
+Spring
(BSc) Programming Tech. & Langs. I [C#]
(BSc) Data Mining [Data Warehouses]
(BSc) E-Commerce and E-Business
(BSc) Enterprise Resource Planning Systems
2010-2011 Academic Year
+Fall
(MSc) Computer Aided Project Management (IKU)
(BSc) IT in Construction
(BSc) Object Oriented Programming [Java]
(BSc) Programming Tech. & Langs. I [C]
+Spring
(MSc) IT in Construction
(BSc) User Interface Design [Processing]
(BSc) Programming Tech. & Langs. II [C]
(BSc) Systems Analysis and Design [UML]
2011-2012 Academic Year
+Fall
(MSc) IT in Construction (IKU)
(BSc) Computer Aided Software Design [GoF Design Patterns]
(BSc) Object Oriented Programming [Java]
+Spring
(MSc) Building Information Modeling
(BSc) Systems Analysis and Design [UML]
(BSc) Internet Based Software Design [PHP & AJAX]
2012-2013 Academic Year
+Fall
(MSc) IT in Construction
(MSc) Building Information Modeling
(BSc) Visual Programming [C#]
+Spring
(Distance L.) Internet and Web Programming [PHP]
2013-2014 Academic Year
+Fall
+Spring
(Distance L.) Internet and Web Programming [PHP]
(Distance L.) Development of Web Applications [PHP]
(Distance L.) Knowledge Management
2014-2015 Academic Year
+Fall
(MSc) IT in Construction
(MSc) Building Inventory Management Systems [PHP+GoogleMaps]
(BSc) Visual Programming [VB.Net]
(BSc) Management Information Systems 
(Distance L.)Visual Programming [VB.Net]
(Distance L.)Introduction to Management Information Systems
(Distance L.)Development of Web Applications [PHP]
+Spring
(MSc) Cost Management
(MSc) Sustainable Project Management
(BSc) Structured Programming [C]
(Distance L.)Object Oriented Programming [Java]
(Distance L.)Development of Web Applications [PHP]
(Distance L.) Internet and Web Programming [PHP]
(Web Aided L.) Information Technology [Windows +Office +Internet]

Mimar Sinan Fine Arts University
2015-2016 Academic Year
+Fall
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(BSc) Object Oriented Programming with Java (Beykent U.)
(MSc) GIS (Beykent U.)
(MSc) Building Inventory Storage (PHP)(Beykent U.)
+Spring
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(MSc) BIM
(MSc) Robotics
(MSc) Construction Informatics(Beykent U.)
2016-2017 Academic Year
+Fall
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(MSc) GIS [ARCGIS] (Beykent U.)
(MSc) Building Inventory Storage [PHP](Beykent U.)
+Spring
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(MSc) BIM
(MSc) Data Management in Micro and Macro Urban Spaces [Oracle,PostGRE,BIM Database] 
(MSc) Construction Informatics(Beykent U.)
2017-2018 Academic Year
+Fall
(MSc) BIM and IPD
(MSc) MSc Studio
(MSc) Data Management in Micro and Macro Urban Spaces [Oracle,PostGRE,BIM Database]
(MSc) Building Inventory Storage [PHP](Beykent U.)
(BSc) Introduction to Programming [C](Esenyurt U.)
(BSc) Introduction to Computing Science(Esenyurt U.)
+Spring
(MSc) BIM and IPD [MS Project]
(MSc) MSc Studio
(MSc) 3D Web City Models [Geoserver + Various Tools]
(MSc) BIM (Istanbul U.)
(MSc) Construction Informatics(Beykent U.)
2018-2019 Academic Year
+Fall
(MSc) Data Management in Micro and Macro Urban Spaces[PostGRE,PostGIS,BIM Database]
(MSc) Visual Programming [C#]
(MSc) BIM(ITU)
+Spring
(MSc) BIM and IPD [Plannerly] 
(MSc) MSc Studio
(MSc) 3D Web City Models[Geoserver + Various Tools]
(MSc) BIM [Plannerly] (Istanbul U.)
2019-2020 Academic Year
+Fall
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(MSc) Data Management in Micro and Macro Urban Spaces [PostGRE,PostGIS,BIM Database]
(MSc) Visual Programming [C#]
(MSc) BIM [Plannerly] (Bogazici U.)(ITU)
+Spring
(BSc) IoT and Smart Buildings [Arduino & Javascript]
(MSc) BIM and IPD [Plannerly] 
(MSc) 3D Web City Models [Geoserver + Various Tools]
(MSc) Robotics [Weka]
(MSc) BIM [Plannerly](Istanbul U.)
(MSc) Machine Learning for Construction [Python,Scikit-Learn](ITU)
.06

SKILLS

PROGRAMMING SKIILLS
Python > Programming Python for Data Science experiments
LEVEL : ADVANCE EXPERIENCE : 3 YEARS
Python
C# > Using C# for teaching and Object Oriented Development
LEVEL : ADVANCE EXPERIENCE : 10 years
C#
R > Using R for Data Science Experiments and Statistical Analysis
LEVEL : ADVANCE EXPERIENCE : 5 years
R
MATLAB > Using MATLAB for Optimization and Data Science Experiments
LEVEL : ADVANCE EXPERIENCE : 2 years
Matlab
Visual Basic . NET > Using VB.NET for Teaching
LEVEL : ADVANCE EXPERIENCE : 12 years
VB
PHP > Using Php for Web Development and Teaching
LEVEL : ADVANCED EXPERIENCE : 21 years
Php
ASP > Using ASP for Web Development Research
LEVEL : INTERMEDIATE EXPERIENCE : 22 years
ASP
C > Using C for teaching elementary software development
LEVEL : ADVANCE EXPERIENCE : 20 years
C
Java > Used Java for Teaching purpose
LEVEL : Intermediate EXPERIENCE : 20 years
java
JavaScript > Used Javascript for WebGIS and IoT
LEVEL : ADVANCED EXPERIENCE : 20 Years
Javascript
NodeJS > Used NodeJS for Web Development and in IoT research
LEVEL : Advanced EXPERIENCE : 6 years
NodeJS
.07

CONTACT

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