A5003643544- Construction Project Management and Performance
- BIM and Construction Integration
- Organic Light-Emitting Diodes Research
- Resource-Constrained Project Scheduling
- Luminescence and Fluorescent Materials
- Silicone and Siloxane Chemistry
- Organic Electronics and Photovoltaics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Value Engineering and Management
- Multi-Criteria Decision Making
- Infrastructure Maintenance and Monitoring
- Molecular Junctions and Nanostructures
- Sustainable Building Design and Assessment
- Advanced ceramic materials synthesis
- Occupational Health and Safety Research
- Teleoperation and Haptic Systems
- Machine Learning in Materials Science
- Software Engineering Techniques and Practices
- Risk and Safety Analysis
- Geophysics and Sensor Technology
- Perovskite Materials and Applications
- Supramolecular Chemistry and Complexes
- Vehicle emissions and performance
- Complex Systems and Decision Making
- Marine Biology and Environmental Chemistry
Imam Khomeini International University
2019-2024
University of Michigan
2018-2022
Robert Bosch (Germany)
2021
Universitas Muhammadiyah Banjarmasin
2020
Ann Arbor Center for Independent Living
2018
Iran University of Science and Technology
2015-2017
Amirkabir University of Technology
2012-2014
Illustration of the charge transfer associated with development HOMO and LUMO levels in conjugated polymers that electron donating withdrawing powers depend on collective atoms carry frontier orbitals involved process.
The key factors determining the emission bandwidth of thermally activated delayed fluorescence (TADF) are investigated by combining computational and experimental approaches. To achieve high internal quantum efficiencies in a metal-free organic light-emitting diode via TADF, first triplet (T1) to singlet (S1) reverse intersystem crossing is promoted configuring molecules an electron donor–acceptor (D-A) alternation with large dihedral angle, which results small energy gap (ΔEST) between S1...
Cost overrun risks are declared to be dynamic and interdependent. Ignoring the relationship between cost during risk assessment process is one of primary reasons construction projects go over budget. Conversely, recent studies have failed account for potential interrelationships factors in their machine learning (ML) models. Additionally, presented ML models not interpretable. Thus, this study contributes entire using a Bayesian network (BN) classifier model by considering possible...
A new design concept for metal-free organic phosphors is proposed to tightly couple the heavy atom effect with changes in orbital angular momentum. Bright were created record-fast lifetimes below millisecond regime.
Abstract Multiple studies have explored using cage silsesquioxanes (SQs) as backbone elements in hybrid polymers motivated by their well‐defined structures and physical mechanical properties. As part of this general exploration, we report unexpected photophysical properties copolymers derived from divinyl double decker (DD) SQs, [vinyl(Me)Si(O 0.5 ) 2 ][PhSiO 1.5 ] 8 [(O Si(Me)vinyl] (vinylDDvinyl). These exhibit strong emission red‐shifts relative to model compounds, implying unconventional...
Unpredictable uncertainties cause delays and additional costs for projects. Often, when using traditional approaches, the optimizing procedure of baseline project plan fails leads to delays. In this study, a two-stage multi-objective buffer allocation approach is applied robust scheduling. first stage, some decisions are made on sizes activities. A set Pareto-optimal schedules designed meta-heuristic non-dominated sorting genetic algorithm (NSGA-II) based in step. second Pareto solutions...
The management and control of megaprojects are incredibly complex. Difficulties occur due to unexpected changes errors. To effectively manage disruptive changes, reworks, errors, project managers required consider the dynamic behavior feedback loops that cause delays disturbances. system dynamics (SD) modeling approach has been used in past few decades address this need for analysis improvement performance. This paper discusses how can influence performance a project. SD model was utilized...
Many factors play a role in the life cycle of construction industry projects, focusing on human resources and relationships as main axis business development. Thus, conflict interests between stakeholders projects is clear challenging problem. The increased number project complicates and, consequently, increases possible conflicts. conflicts may result claims if not resolved. success their cost time management can be affected by poor claims. Therefore, this research aims to take significant...
A number of groups have invested considerable time synthesizing double-decker silsesquioxane (DD SQ) copolymers; however, to our knowledge, no one has sought explore through-chain electronic communication between DD SQs via "conjugated" co-monomers. We recently demonstrated that stilbene derivatives simple cages exhibit properties commensurate with formation cage centered lowest unoccupied molecular orbitals (LUMOs), equivalent LUMOs found in complete/incomplete SQ cages,...
Sustainable development of any country to some extent depends on successful accomplishment construction projects, particularly infrastructures. Contractors have a key role in the success these projects. Hence, selection competent contractor as complicated and hard decision process has vital importance destiny project. Contractor is essence multicriteria decision-making that ought encompass so many aspects project client’s requirements one hand capabilities past records contractors other...
Conflict in human relations is unavoidable; therefore, it can occur construction projects that are full of many relationships. These conflicts lead to claims if interlocutors do not agree. The main result the delay and overrun costs projects. Additionally, poor management affects success their budget schedule. Moreover, controlling ensures successful completion minimizes delays disputes. This study sought improve project performance by ranking causes examining impacts on Key Performance...
One problem that can occur in project-based organizations is top-level managers develop strategies, but they don't have a good effect on the operational level of organization, which copes with challenges conducting projects. It seems required alignment between business strategies and selection conduction projects missing. This worsens when cannot determine whether certain are line strategies. The aim this study to provide an applicable framework align project management organizational helps...
Purpose With the advancement of technology and more attention to environmental issues, building information modeling (BIM) green have become two new growing trends in construction industry. Therefore, this study proposes a strategy that integrates BIM rating assessments with an emphasis on Iran Green Building Rating System (IGBRS). Design/methodology/approach By creating Revit-IGBRS project template includes sheets related all credits, compliance IGBRS credits management submittal documents...
The high-rise construction industry has particular features, such as prolonged periods and constant change in the workplace. These features may have turned it into most dangerous industry, given its significant mortality rate. This research aims to identify effective criteria for buildings’ safety issues rank critical risks level up of these projects. is divided two phases: In Phase I, literature on occurrence accidents are three main classes, their weights determined using best–worst...
Molecular design principles of thermally activated delayed fluorescent (TADF) emitters having a high quantum efficiency and color tuning capability was investigated by synthesizing three TADF with donors at different positions benzonitrile acceptor. The position rendering large overlap between the highest occupied molecular orbital (HOMO) lowest unoccupied (LUMO) enhances emitter. Regarding overlap, donor attachments 2- 6-positions were more beneficial than 3- 5-substitutions. Moreover, an...
Abstract Genetic Algorithms have parameters such as crossover probabilities and mutation used based on entering population numbers number of generations. Of the two entries, nine rules were obtained which would produce probabilities. One problem that can be solved using a genetic algorithm is scheduling courses. In preparation course scheduling, it takes quite long time needs very high accuracy. Therefore, purpose this study to implement algorithms lecture problems. So accuracy speed in...
Here, we report the synthesis of DD SQ terpolymers with alternating biphenyl/terphenyl/stilbene and thiophene/hexylthiophene/bithiophene/thienothiophene linkers. These were characterized using 1H 13C nuclear magnetic resonance, gel permeation chromatography, matrix-assisted laser desorption/time-of-flight spectrometry, thermogravimetric analysis, Fourier-transform infrared goal combining long-wavelength emissions high quantum yields. Density functional theory modeling studies Vienna ab...
Polarity-induced room-temperature dual phosphorescence involving the T 2 state of purely organic phosphors.