تحصیلات
- فوق دکتری, 1388, مدیریت پروژه, دانشگاه جامع لندن
- دکتری, 1387, مهندسی صنایع, دانشگاه صنعتی امیرکبیر
- کارشناسی ارشد, 1384, مهندسی صنایع, دانشگاه صنعتی امیرکبیر
- کارشناسی, 1382, مهندسی صنایع, دانشگاه صنعتی خواجه نصیرالدین طوسی
کتاب های غیر از تالیف و ترجمه
مقالات چاپ شده در نشریات بینالمللی
- Siamak Haji Yakhchali, and Seyed Hassan Ghodsipoor . "Erratum to On computing the latest starting time and floats of activities in a network with imprecise durations." FUZZY SETS AND SYSTEMS -, no. --- (2008): -.
- Siamak Haji Yakhchali, Seyed Hassan Ghodsypour , and Seyed Mohamad Taghi Fatemi Ghomi . "On Criticality of Paths in Networks with ImpreciseDurations and Generalized Precedence Relations." SOFT COMPUTING 58, no. --- (2009): 315-324.
- Siamak Haji Yakhchali, and Seyed Hassan Ghodsypour . "Computing latest starting times of activities in interval - valued networks with minimal time lags." EUROPEAN JOURNAL OF OPERATIONAL RESEARCH 200, no. 3 (2010): 874-880.
- Siamak Haji Yakhchali, and Seyed Hassan Ghodsypour. "On the latest starting times and criticality of activities in a networkwith imprecise durations." APPLIED MATHEMATICAL MODELLING 34, no. 8 (2010): 2044-2058.
- Mohammad Majid Fouladgar , Abdolreza Yazdani Chamzini , Edmundas Kazimieras Zavadskas , Siamak Haji Yakhchali, and Mohammad Hossein Ghasempourabadi . "PROJECT PORTFOLIO SELECTION USING FUZZY AHP AND VIKOR TECHNIQUES." Transformations in Business & Economics 11, no. 25 (2011): 42-59.
- Mohammad Majid Fouladgar , Abdolreza Yazdanichamzini , and Siamak Haji Yakhchali. "A New Methodology for Prioritizing Mining Strategies." International Journal of Innovation Management and Technology 2, no. 4 (2011): 342-347.
- Siamak Haji Yakhchali. "Program Evaluation and Review Techniques II ( PERT II )." ENGINEERING LETTERS 19, no. 4 (2011): 324-330.
- Abdolreza Yazdani-Chamzini, and Siamak Haji Yakhchali. "Tunnel Boring Machine (TBM) selection using fuzzy multicriteria decision making methods." TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 38, no. 38 (2012): 583-584.
- Abdolreza Yazdani Chamzini , and Siamak Haji Yakhchali. "Tunnel Boring Machine ( TBM ) selection using fuzzy multicriteria decision making methods." TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 30, no. --- (2012): 194-204.
- Abdolreza Yazdani Chamzini , Siamak Haji Yakhchali, Diana Volungevičienė , and Edmundas Kazimieras Zavadskas . "Forecasting gold price changes by using adaptive network fuzzy inference system." Journal of Business Economics and Management 5, no. 13 (2012): 994-1010.
- Mohammad Farid , Mehdi Mohamadi Hosseinabadi , Abdolreza Yazdani Chamzini , Siamak Haji Yakhchali, and Mohammad Hossein Basiri . "Developing a new model based on neuro - fuzzy system for predicting roof fall in coal mines." NEURAL COMPUTING & APPLICATIONS -, no. --- (2012): -.
- Abdolreza Yazdani-Chamzini, Siamak Haji Yakhchali, and Edmundas Kazimieras Zavadskas. "Using an integrated MCDM model for mining method selection in presence of uncertainty." ECONOMIC RESEARCH-EKONOMSKA ISTRAZIVANJA 25, no. 25 (2012): 869-904.
- Ali Jamshidi , Abdolreza Yazdani Chamzinib , Siamak Haji Yakhchali, and Sohrab Khaleghid . "Developing a new fuzzy inference system for pipeline risk assessment." JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES 26, no. 1 (2013): 197-208.
- Abdolreza Yazdani-Chamzini, and Siamak Haji Yakhchali. "A new model to predict roadheader performance using rock mass properties." Journal of Coal Science and Engineering 19, no. 1 (2013): 51-56.
- Abdolreza Yazdani, Mojtaba Razani, Siamak Haji Yakhchali, Edmundas Kazimieras Zavadskas, and Zenonas Turskis. "Developing a fuzzy model based on subtractive clustering for road header performance prediction." AUTOMATION IN CONSTRUCTION 35, no. 35 (2013): 111-120.
- Abdolreza Yazdani-Chamzini, Siamak Haji Yakhchali, and Mahmood Mahmoodian. "Risk ranking of tunnel construction projects by using the ELECTRE technique under a fuzzy environment." International Journal of Management Science and Engineering Management 8, no. 1 (2013): 1-14.
- Ali Alidoosti, Ali Jamshidi, Siamak Haji Yakhchali, Mohammad hossein Basiri, Ramin Azizi, and Abdolreza Yazdani chamzini. "Fuzzy logic for pipelines risk assessment." management Science Letters 2, no. 2012 (2013): 1707-1716.
- Mojtaba Razani , Abdolreza Yazdani Chamzini , and Siamak Haji Yakhchali. "A novel fuzzy inference system for predicting roof fall rate in underground coal mines." SAFETY SCIENCE 55, no. --- (2013): 26-33.
- Abdolreza Yazdani-Chamzini, Shahram Shariati, Siamak Haji Yakhchali, and Edmundas Kazimieras Zavadskas Kazimieras Zavadskas. "Proposing a new methodology for prioritising the investment strategies in the private sector of Iran." The Economic Research 12, no. 12 (2014): 37-41.
- Sarmad Keyani, Mohammad Reza Yousefi, Siamak Haji Yakhchali, and Aghil Mellatdust. "Identifying program critical success factors in construction industry." management Science Letters 4, no. 4 (2014): .
- Vahid Reza Yousafi, Aida Rahimi Golkhandan, Sarmad Kiani, Siamak Haji Yakhchali, and Ehsan Mehrabanfar. "Ranking of Financing Methods in Iran Construction Renovation Projects_ A Sensitivity Analysis Approach." Mediterranean Journal of Social Sciences 6, no. 5 (2015): 303-309.
- Shima Nikkhoo, Katayoun Taghizadeh Azari, and Siamak Haji Yakhchali. "Designing a Portfolio management maturity model (Elena)." Procedia-Social and Behavioral Sciences 226, no. 2016 (2016): 318-325.
- Ali Namazian, and Siamak Haji Yakhchali. "Modeling and Solving Project Portfolio and Contractor Selection Problem Based on Project Scheduling under Uncertainty." Procedia-Social and Behavioral Sciences 22, no. 6 (2016): 35-42.
- Vahid Reza Yousafi, Siamak Haji Yakhchali, Mostafa Khanzadeh, Ehsan MEHRABANFAR, and Jonas SAPARAUSKAS. "Proposing a neural network model to predict time and cost claims in construction projects." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 22, no. 7 (2016): 967-978.
- Vahid Reza Yousafi, Siamak Haji Yakhchali, Mostfa Khanzadi, Ehsan Mehrabanfar, and Jonsa Saparauska. "PROPOSING A NEURAL NETWORK MODEL TO PREDICT TIME AND COST CLAIMS IN CONSTRUCTION PROJECTS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 22, no. 7 (2016): 967-978.
- Fariba Shoeleh, Siamak Haji Yakhchali, and Nima Yazadani. "Project Knowledge Management: A Survey." international journal of humanities and management sciences 4, no. 4 (2016): 426-430.
- Mohammadreza Emami, Siamak Haji Yakhchali, Ali Namazian, and Shabnam Kazemi Nimgaz. "Project Selection Based on Project Scheduling with Renewable Resource, Nonrenewable Resource and Budget Constraints." international journal of humanities and management sciences 4, no. 4 (2016): 389-392.
- Azam Keshavarz Haddadha, Zahra Jalili Bal, and Siamak Haji Yakhchali. "Project Selection by Using an Integrated Clustering and ANP method: a Case study." International Journal of Humanities and Applied Sciences 5, no. 1 (2016): 65-68.
- Zahra Jalili Bal, and Siamak Haji Yakhchali. "A Novel Integrated Decision Making and Mathematical Programming Approach for Project Portfolio Selection: A Case Study." International Journal of Humanities and Applied Sciences 5, no. 1 (2016): 55-58.
- Vahid Reza Yousafi, Siamak Haji Yakhchali, Jonas Saparauskas, and Sarmad Keyani. "The Impact Made on Project Portfolio Optimisation by the Selection of Various Risk Measures." ENGINEERING ECONOMICS 29, no. 2 (2018): 2029-5839.
- Arsalan Alahashi, and Siamak Haji Yakhchali. "Optimizing Fleet Composition and Routing Plan Scheduling for Offshore Supply Operations: Case Study of an Offshore Drilling Firm." The Asian Journal of Shipping and Logistics 3, no. 1 (2018): .
- Babak Tabrizi, Seyed Farid Ghaderi, and Siamak Haji Yakhchali. "Net present value maximisation of integrated project scheduling and material procurement planning." International Journal of Operational Research 34, no. 4 (2019): .
- Keyvan Kamandanipour, Siamak Haji Yakhchali, and Reza Tavakkoli-moghaddam. "Dynamic revenue management in a passenger rail network under price and fleet management decisions." ANNALS OF OPERATIONS RESEARCH 1, no. 1 (2023): .
- Keyvan Kamandanipour, Reza Tavakkoli-moghaddam, and Siamak Haji Yakhchali. "A discrete time/resource trade-off problem with a critical chain method under uncertainty: a hybrid meta-heuristic algorithm." SOFT COMPUTING 27, no. 23 (2023): 17867-17885.
مقالات چاپ شده در نشریات داخلی
همایشهای بینالمللی
- Siamak Haji Yakhchali, , , and . "Possible Criticality of Paths in Networks withImprecise Durations and Time Lags." NAFIPS, San Diego.
- Siamak Haji Yakhchali, , , and . "Necessary Criticality of Paths in Networks withImprecise Durations and Time lags." NAFIPS, San Diego.
- Siamak Haji Yakhchali, and . "A hybrid genetic algorithm for computing the float ofan activity in networks with imprecise durations." International Conference on Fuzzy Systems FUZZ2008, Hong Kong.
- Siamak Haji Yakhchali, , and . "An Incremental Approach for Temporal Analysis in Networks with ImpreciseActivity and Time Lag Durations." The International Conference on Industrial Engineering andEngineering Management IEEM, Singapore.
- Siamak Haji Yakhchali. "Project scheduling with start-time dependent cost and imprecise durations." 2011 International Conference on Construction Engineering and Project Management (ICCEPM, Sydney.
- Siamak Haji Yakhchali. "A Path Enumeration Approach for Critical Analysis in Project Networks with Fuzzy Activity Durations." 2011 International Conference on Construction Engineering and Project Management (ICCEPM, Sydney.
- , Siamak Haji Yakhchali, and Masoud Rabbani. "The role of motivation in managing Cultural Conflict in International Teams." 14th International Business Research Conference, Dubai.
- , Siamak Haji Yakhchali, and Masoud Rabbani. "Motivation Role in Reducing Destructive Team Conflict." 14th International Business Research Conference, Dubai.
- Siamak Haji Yakhchali. "A Simple Approach to Project Scheduling in Networks with Stochastic Durations." World Congress on Engineering 2011-WCE 2011, London.
- Siamak Haji Yakhchali. "On Computing the Minimal Latest Starting Times of Activities in Interval-Valued Network with Generalized Precedence Relations." World Congress on Engineering 2011-WCE 2011, London.
- , , Siamak Haji Yakhchali, and . "Project portfolio Selection Using VIKOR Technique under Fuzzy Environment." 2011 2nd International Conference on Construction and Project Management, Singapore.
- Siamak Haji Yakhchali. "Organizational Behavior Factors In Responding To Project Risks Using System Dynamics Approach." 2011 2nd International Conference on Construction and Project Management, Singapore.
- Siamak Haji Yakhchali, and Hamed Heydari Farsani. "Do Different Project Categories Need Different Leadership Styles?." 2nd International Conference on Management, Behavioral Sciences and Economics Issues (ICMBSE'2013), Dubai.
- Mehrad Bastani, and Siamak Haji Yakhchali. "Multi-mode Resource-Constraint Project Scheduling Problem (MRCPSP) with pre-emptive activities." 2nd International Conference on Mechanical, Automobile and Robotics Engineering (ICMAR'2013), Dubai.
- Mojtaba Ziaei, and Siamak Haji Yakhchali. "A Novel Approach for Delay Analysis." 2nd International Conference on Mechanical, Electronics and Mechatronics Engineering (ICMEME'2013), London.
- Siamak Haji Yakhchali, Setareh Torabzadeh, and Azadeh Arjmand. "Introduction to a Stepwise Procedure for Program Planning." 2nd International Conference on Mechanical, Electronics and Mechatronics Engineering (ICMEME'2013), London.
- Sheama Ghanei, and Siamak Haji Yakhchali. "A New Mixed-Integer Programming Model for Project Portfolio Selection with Strategic Resources." 2nd International Conference on Mechanical, Electronics and Mechatronics Engineering (ICMEME'2013), London.
- Azam Keshavarz Haddadha, Ali Namazian, and Siamak Haji Yakhchali. "Project selection by using AHP and Bernardo Techniques." International Conference on Management and Social Sciences, İSTANBUL.
- Mohamadreza Emami, Siamak Haji Yakhchali, and Ali Namazian. "Robust Optimization Approach for Project Selection and Scheduling Problem with Uncertain Activity Duration." International Conference on Management and Social Sciences, İSTANBUL.
- Azam Keshavarz Haddadha, Siamak Haji Yakhchali, and Zahra Jalili Bal. "MCDM Techniques and Knapsack Approach for Project Selection Problem: A Case Study." International Conference on Law, Business, Marketing and Education, paris.
- Siamak Haji Yakhchali, Amin Alvanchi, and Nima Farmani. "A Brief Study on Residential Construction Projects from View of Delay Causes Ranking." International Conference on Law, Business, Marketing and Education, paris.
- Shabnam Kazemi Nia Gazi, Seyed Ebrahim Hosseini, Siamak Haji Yakhchali, and Meysam Borajee. "The Application of the Statistical Methods to Measure the Effect of Adding A Bamboo Fiber and Combine it with Animal Collagen on the Physical, Chemical and Sensory Characteristics of Nags Tilapia Fish." International Conference on Literature, History, Humanities and Social Sciences (LHHSS-17), Dubai.
- Ali Namazian, and Siamak Haji Yakhchali. "Project, Program and Portfolio Risk Perceptions." nternational Conference on Literature, History, Humanities and Social Sciences (LHHSS-17), Dubai.
- Mehdi Aghamohammadi, and Siamak Haji Yakhchali. "Sustainable Model for Project Management Process." International Conference on Literature, History, Humanities and Social Sciences (LHHSS-17), Dubai.
- Metra Danshmandi, and Siamak Haji Yakhchali. "A practical Approach Based on Fuzzy Analytic Hierarchy Process for Contractor Selection: a Case Study of An Engineering and Development Company in Iran." International Conference on Literature, History, Humanities and Social Sciences (LHHSS-17), Dubai.
- Azam Keshavarz Haddadh, Ali Namazian, and Siamak Haji Yakhchali. "Project Selection Problem by Combination of Shannon Entropy and MCDM Techniques." International Conference on Literature, History, Humanities and Social Sciences (LHHSS-17), Dubai.
- Maryam Karimi, and Siamak Haji Yakhchali. "Develop a location-scheduling model for jumanitarian Supply chain of health services under uncertainty with using of robust optimization Approach." Int Conf on Research in Science and Engineering, İSTANBUL.
- Mehraneh Davari, Siamak Haji Yakhchali, and Sirous Shojaie. "Proposing an Improved Risk Assessement Model_ A Case Study in Saba tower." Int.Conf on Law Education, Business and Corporate Social Responsiblites,.
- Siamak Haji Yakhchali. "Introduction of ELENA’s Project Guideline." 9th International Conference on Business, Law, E-Governance, and Corporate Social Responsibilities (BLECSR-17), İSTANBUL.
- Mehrasa Mosallam, Shabnam Kazemi Nimga, and Siamak Haji Yakhchali. "The Application of Critical Chain Concept in Elena Project Guidance." 9th International Conference on Business, Law, E-Governance, and Corporate Social Responsibilities (BLECSR-17), İSTANBUL.
- Mehrasa Mosallami, Shabnam Kazemi Nimgazi, and Siamak Haji Yakhchali. "The Application of Critical Chain Concept in Elena Project Guidance." 9th International Conference on Business, Law, E-Governance, and Corporate Social Responsibilities (BLECSR-17), İSTANBUL.
- Azam Keshavarz Haddadha, and Siamak Haji Yakhchali. "Developing a New Model for Project Portfolio Selection Problem under Fuzzy Environment." 9th Int'l Conference on Business, Law, E-Governance, and Corporate Social Responsibilities (BLECSR-17), İSTANBUL.
- Reza Mirbagheri, Reza Roshangarzadeh, and Siamak Haji Yakhchali. "New Model for Portfolio Selection; Based on Future Approach (SFMADM)." 9th International Conference on Business, Law, E-Governance, and Corporate Social Responsibilities (BLECSR-17), İSTANBUL.
- Reza Mirbagheri, Reza Roshangarzadeh, and Siamak Haji Yakhchali. "New Model for Portfolio selection_ based on Future approach (SFMADM)." Int. Conf. on Innovation in Engineering and Technology, paris.
- Mehrasa Mosallami, and Siamak Haji Yakhchali. "A New Buffer Monitoring Approach Based on Earned Value Management Concepts." nternational Conference on Literature, History, Humanities and Interdisciplinary Studies (LHHIS-17), Dubai.
- Mehraneh Davari, Siamak Haji Yakhchali, and Sirous Shojaie. "Proposing a Developed Risk Assessment Model Based on ELENA: A Case Study in Railway." Dubai International Conference on Literature, History, Humanities and Interdisciplinary Studies (LHHIS-17), Dubai.
- Mohammad Hossein Afrazeh, and Siamak Haji Yakhchali. "Designing a Program Management Maturity Model (ELENA)." Dubai International Conference on Literature, History, Humanities and Interdisciplinary Studies (LHHIS-17), Dubai.
- Siamak Haji Yakhchali, and Mosayeb Hassanvand. "Decision Making Approaches upon Home Buying versus Home Renting for Individual Households." Dubai International Conference on Literature, History, Humanities and Interdisciplinary Studies (LHHIS-17), Dubai.
- Zahra Tahaei, and Siamak Haji Yakhchali. "Project Management and Crisis Management in Different Projects (Base on Elena Project Guide)." 6th International Conference on Mechanical, Aeronautical and Industrial Engineering (MAIE-17), paris.
- Zahra Baradaran Sorkhabi, and Siamak Haji Yakhchali. "The Status of Enterprise Agility In Comparison With Competitors." 6th International Conference on Mechanical, Aeronautical and Industrial Engineering (MAIE-17), paris.
- Sonia Adibi, and Siamak Haji Yakhchali. "Investigating the Effect of Timely Delivery of Raw Materials on Supply Chain Using System Dynamics (Case Study of Sesame Industries in Yazd Province)." 6th International Conference on Mechanical, Aeronautical and Industrial Engineering (MAIE-17), paris.
- Siamak Haji Yakhchali, Abed Davarpanah Bafti, and Navid Fathi. "Lexicography and linear mathematical model combined method by stability criterion due to select project portfolio." 6th International Conference on Mechanical, Aeronautical and Industrial Engineering (MAIE-17), paris.
- Siamak Haji Yakhchali, Saeeideh Menshadian, and Azita Firoozfard. "Implementation of Elena Project Management System in Pishgaman Group." 6th International Conference on Mechanical, Aeronautical and Industrial Engineering (MAIE-17), paris.
- S.sina Ariaa, and Siamak Haji Yakhchali. "FRCPSP with Multi Skill." 11th Int'l Conference on Business, Education, Humanities and Social Sciences Studies (BEHSSS-18), İSTANBUL.
- Siamak Haji Yakhchali. "Elena Guide for People: A Novel Framework for Project Managers Competency Development." 11th Int'l Conference on Business, Education, Humanities and Social Sciences Studies (BEHSSS-18), İSTANBUL.
- Siamak Haji Yakhchali, and Ali Husseinzadeh Kashan. "Possible and Necessary Optimality of Schedules in the Two Machines Scheduling Problem with Imprecise Processing Times." 11th Int'l Conference on Business, Education, Humanities and Social Sciences Studies (BEHSSS-18), İSTANBUL.
- Siamak Haji Yakhchali, and Babak Yapir Rashti. "Applying Elena Project Guide for Risks in Constructions Project Model: A Case Study in Acacia Building Project." 11th Int'l Conference on Business, Education, Humanities and Social Sciences Studies (BEHSSS-18), İSTANBUL.
- Siamak Haji Yakhchali, and Azadeh Arjmand. "A Genetic Algorithm Optimization for the Resource-Constrained Project Scheduling Problem with Discounted Cash Flows and Delay Penalties." 11th Int'l Conference on Business, Education, Humanities and Social Sciences Studies (BEHSSS-18), İSTANBUL.
- Meysam Borajeah, and Siamak Haji Yakhchali. "New Concordance and Discordance Indexes for ELECRE III Method." 10th International Conference on Advances in Science, Engineering and Technology (ICASET-18), paris.
- Sina Ariaa, and Siamak Haji Yakhchali. "New ELENA Project Management Standard Approach in Difference between Target and Destination of Projects." 10th International Conference on Advances in Science, Engineering and Technology (ICASET-18), paris.
- Sheama Ghanei, and Siamak Haji Yakhchali. "Using a Novel Method for Portfolio Selection under Uncertainty Condition." 10th International Conference on Advances in Science, Engineering and Technology (ICASET-18), paris.
- Zahra Tahaei, and Siamak Haji Yakhchali. "Elena Guide’s Principles in Crisis." 10th International Conference on Advances in Science, Engineering and Technology, paris.
- Shahin Danshmand, Nafiesh Solymani, and Siamak Haji Yakhchali. "Converting Project’s Risks to Contractual Provisions Based on Elena’s Project Guideline in a Case Study." 10th International Conference on Advances in Science, Engineering and Technology, paris.
- Mohmanad Hossein Dalvand, and Siamak Haji Yakhchali. "Cost Minimization Model Of Multi-Skill Resource Constrained Multi-Project Scheduling Problem With Probabilistic Durations By GA." 10th International Conference on Advances in Science, Engineering and Technology (ICASET-18), paris.
- Siamak Haji Yakhchali. "Elena Portfolio Guide: A Novel Framework for Portfoli Management." 10th International Conference on Advances in Science, Engineering and Technology (ICASET-18), paris.
- Maryam Karimi, and Siamak Haji Yakhchali. "Determining Decoupling Points in a Supply Chain Networks using NSGA II Algorithm." 3th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Pejman Asadi, Alireza Khatami, and Siamak Haji Yakhchali. "Developing Tools Recognition and Evaluating Program's Outcomes and Portfolio's Benefits Regarding to Elena Program and Portfolio Guidance." 13th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Mehrasa Mosallami, and Siamak Haji Yakhchali. "A New Buffer Sizing Approach Based on ELENA Project Management Guidance." 13th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Zahra Baradaran Sorkhabi, Mohammad Ali Babaei Zakliki, Kambiz Heidarzadeh Hanzaee, and Siamak Haji Yakhchali. "Social Media: A Way to Customer Engagement with the Brand." 13th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Fariba Shoeleh, Mahmoud Mohammad Hosein Zadeh Golabchi, and Siamak Haji Yakhchali. "The Role of Technological Factors in Knowledge Transfer in Transnational Projects." 13th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Amir Reza Derhami, and Siamak Haji Yakhchali. "Examining Challenges and Providing a Tool for Assessing the Delegation of Authority Competency in Project Managers." 13th International Conference on Law, Education, Business and Disaster Management (LEBDM-18), Budapest.
- Siamak Haji Yakhchali. "What is ElenaCenter.com?." 22th BORDEAUX-FRANCE Int'l Conference on Humanities, Social Sciences & Interdisciplinary Studies (HSSIS-19), Bordeaux.
- pezhman asadi, ali eslampanah, and Siamak Haji Yakhchali. "Optimization of NPV in the RCMPSP under Multi-skill Conditions with using from the PSO Algorithm." 22th BORDEAUX-FRANCE Int'l Conference on Humanities, Social Sciences & Interdisciplinary Studies (HSSIS-19), Bordeaux.
- Fazeh Omeran, and Siamak Haji Yakhchali. "Comparative Comparison of the Elena Project and Value Engineering." 22th BORDEAUX-FRANCE Int'l Conference on Humanities, Social Sciences & Interdisciplinary Studies (HSSIS-19), Bordeaux.
- Siamak Haji Yakhchali. "What is WikiPM.ir?." 22th BORDEAUX-FRANCE Int'l Conference on Humanities, Social Sciences & Interdisciplinary Studies (HSSIS-19), Bordeaux.
- Faezeh Omrani, and Siamak Haji Yakhchali. "Comparative Comparison of the Elena Project and Value Engineering." 23rd PARIS Int'l Conference on "Advances in Science, Engineering & Waste Management" (PASEW-21), paris.
- Siamak Haji Yakhchali. "Net Present Value Optimization for Multi Project Capital Constrained Scheduling Problem." 23rd PARIS Int'l Conference on "Advances in Science, Engineering & Waste Management" (PASEW-21), paris.
- Siamak Haji Yakhchali, and Vahidreza Yousefi. "Portfolio selection of projects and programs with respect to Risk and Return." 37th paris international conference on "advances in science,engineering and waste management"(PASEW-23), paris.
- Siamak Haji Yakhchali. "portfolio structures in organizations based on Elena Guides." 37th paris international conference on "advances in science,engineering and waste management"(PASEW-23), paris.
- آیدین رضائیان و سیامک حاجی یخچالی. "ارائه مدل ریاضی برای انتخاب سبد پروژه ها و طرح ها با توجه به روش های تأمین مالی." کنفرانس بین المللی مهندسی صنایع، تهران.
- شیما نیکخو، کتایون تقی زاده آذری و سیامک حاجی یخچالی. "طراحی مدل بلوغ سبد." کنفرانس بین المللی مدیریت پروژه، تهران.
- اعظم کشاورز و سیامک حاجی یخچالی. "منافع و معایب BIM در صنعت ساختمان." کنفرانس بین المللی مدیریت پروژه و ساخت، تهران.
- مهدی آقا محمدی و سیامک حاجی یخچالی. "ارائه معیارهای پایدار در مدیریت پروژه و ساخت." کنفرانس بین المللی مدیریت پروژه و ساخت، تهران.
- مهدی آقا محمدی و سیامک حاجی یخچالی. "پایدار و مدیران پروژه." کنفرانس بین المللی مدیریت ساخت و پروژه،.
- اعظم کشاورز و سیامک حاجی یخچالی. "ارائه مدلی برای خوشه بندی، ارزیابی و انتخاب سبد پروژه ها." کنفرانس بین المللی مدیریت پروژه، تهران.