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A model-driven approach to semi-structured database design

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Frontiers of Computer Science 2015年第2期9卷 237-252页

作者： Amir JAHANGARD-RAFSANJANI seyed-Hassan MIRIAN-HOSSEINABADI Department of Computer Engineering Sharif University of Technology Tehran 11365-11155 Iran

Recently XML has become a standard for data representation and the preferred method of encoding struc- tured data for exchange over the Internet. Moreover it is fre- quently used as a logical format to store structured and semi- structured data in databases. We propose a model-driven and configurable approach for modeling hierarchical XML data using object role modeling （ORM） as a flat conceptual model. First a non-hierarchical conceptual schema of the problem domain is built using ORM and then different hierarchical views of the conceptual schema or parts of it are specified by the designer using transformation rules. A hierarchical mod- eling notation called H-ORM is proposed to show these hier- archical views and model more complex semi-structured data constructs and constraints. We also propose an algorithm to map hierarchical H-ORM views to XML schema language.

关键词： semi-structured database design object rolemodeling model driven approach

Preparation of a pH-sensitive pantoprazole-imprinted polymer and evaluation of its drug-binding and-releasing properties

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Science China Chemistry 2014年第6期57卷 857-865页

作者： MOHAJERI seyed Amin SAJADI TABASSI Sayyed Abolghasem HASSANPOUR MOGHADAM Maryam MOHAJERI seyed Ahmad Pharmaceutical Research Center School of PharmacyMashhad University of Medical Sciences Targeted Drug Delivery Research Center School of PharmacyMashhad University of Medical Sciences

The aim of this work was to synthesize a pantoprazole-imprinted polymer(MIPs)and study its binding and release properties in an aqueous *** acid(MAA),methacrylamide(MAAM),hydroxyethyl methacrylate(HEMA),and 4-vinyl pyridine(4VP)were tested as functional *** solvents were also applied as polymerization media under heat or UV *** optimized MIP was prepared in chloroform as a solvent,4-vinyl pyridine as a functional monomer,and ethylene glycole dimethacrylate(EGDMA)as a crosslinker monomer under UV *** and release properties of MIP were studied in comparison with a non-imprinted polymer(NIP)in aqueous media,at different pH *** protective effect of polymer for drugs against acidic conditions was evaluated at pH *** indicated that the MIP had superior binding properties compared to NIP for *** percentage of drug released from MIP was significantly less than from NIP at all pH values,which was attributed to the presence of imprinted cavities in the MIP *** also had a stronger protective effect for pantoprazole in acidic media,in comparison with NIP.

关键词： loading molecularly imprinted polymer pantoprazole release protective effect

A novel technology for control of variable speed pumped storage power plant

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Journal of Central South University 2016年第8期23卷 2008-2023页

作者： seyed Mohammad Hassan Hosseini Mohammad Reza Semsar Department of Electrical Engineering Islamic Azad University

Variable speed pumped storage machines are used extensively in wind power plant and pumped storage power plant. This paper presents direct torque and flux control(DTFC) of a variable speed pumped storage power plant(VSPSP). By this method both torque and flux have been applied to control the VSPSP. The comparison between VSPSP's control strategies is studied. At the first, a wind turbine with the capacity 2.2 k W and DTFC control strategies simulated then a 250 MW VSPSP is simulated with all of its parts(including electrical, mechanical, hydraulic and its control system) by MATLAB software. In all of simulations, both converters including two-level voltage source converter(2LVSC) and three-level voltage source converter(3LVSC) are applied. The results of applying 2LVSC and 3LVSC are the rapid dynamic responses with better efficiency, reducing the total harmonic distortion(THD) and ripple of rotor torque and flux.

关键词： direct torque and flux control(DTFC) two-level & three-level voltage source converter(2LVSC&3LVSC) variable speed pumped storage power plant(VSPSP)

Multifaceted Bioinspiration for Improving the Shaft Resistance of Deep Foundations

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Journal of Bionic Engineering 2020年第5期17卷 1059-1074页

作者： seyed Ali Aleali Paola Bandini Craig Michael Newtson Center for Bio-mediated and Bio-inspired Geotechnics Department of Civil EngineeringNew Mexico State UniversityLas CrucesNew Mexico 88003-8001USA

This paper describes the bioinspiration process to derive design concepts for new deep foundation systems that have greater axial capacity per unit volume of pile material compared to conventional deep *** study led to bioinspired ideas that provide greater load capacity by increasing the pile shaft *** bioinspiration approach used problem-solving strategies to define the problem and transfer strategies from biology to geotechnical *** bioinspiration considered the load transfer mechanism of hydroskeletons and the anchorage of the earthworm,razor clam,kelp,and lateral roots of *** biostrategies that were transferred to the engineering domain included a flexible but incompressible core,passive behaviour against external loading,a longitudinally split shell that allows expansion for anchorage,and lateral root-type or setae-type anchoring *** concepts of three bioinspired deep foundation systems were proposed and *** advantage of this approach was illustrated with two examples of the new laterally expansive pile in drained sand under axial *** finite element analysis of these examples showed that the new laterally expansive pile can provide considerably greater load capacity compared to a conventional cylindrical pile due to the increased lateral confining pressure developed along the expanded pile core.

关键词： bioinspiration expansion anchorage deep foundation pile capacity frictional resistance

Enhanced two-loop model predictive control design for linear uncertain systems

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Journal of Systems Engineering and Electronics 2021年第1期32卷 220-227页

作者： Mohammad-Ghassem FARAJZADEH-DEVIN seyed Kamal HOSSEINI SANI Department of Electrical Engineering Ferdowsi University of MashhadMashhad 1696700Iran

Model predictive controllers(MPC)with the two-loop scheme are successful approaches practically and can be classified into two main categories,tube-based MPC and MPCbased reference governors(RG).In this paper,an enhanced twoloop MPC design is proposed for a pre-stabilized system with the bounded uncertainty subject to the input and state *** proposed method offers less conservatism than the tube-based MPC methods by enlarging the restricted input *** to the MPC-based RGs,the investigated method improves tracking performance of the pre-stabilized system while satisfying the ***,the robust global asymptotic stability of the closed-loop system is guaranteed in a novel procedure with terminal constraint *** of the proposed method on a servo system shows its effectiveness in comparison to the others.

关键词： model predictive control(MPC) robust control cascade control constraint satisfaction

Evaluation of enhancing CO_(2) sequestration by post-brine injection under different scenarios using the E300 compositional simulator

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Petroleum Research 2019年第4期4卷 314-333页

作者： Mahdi Mohajeri seyed Shariatipour School of Energy Construction and EnvironmentCoventry UniversityUnited Kingdom

To accelerate the CO_(2) trapping in geological storage sites,several injection strategies have been proposed by researchers so ***,the question remains unanswered as to which one of these injection strategies is the most efficient in terms of immobilising CO_(2) and more importantly,how these strategies might be *** this paper,we attempt to simulate a typical geological CO_(2) storage scheme in an aquifer using the E300 compositional reservoir simulator and subsequently investigate and compare the impact of various injection strategies on CO_(2) immobilising ***,the impact of adding a short period of post-brine injection on various strategies is newly *** results reveal that using a relatively short period of post-brine injection can significantly improve total CO_(2) trapping efficiency in all the *** general,by using post injection of brine,more CO_(2) is spread out through the aquifer and,as a consequence,by increasing the interfacial area of the CO_(2) plume,the amount of dissolution as a result of mass transfer increases ***,the effect of convection can become stronger in the case of post-brine injection creating a stronger density instability and thus a more rapid initiation of ***,when brine is injected into the system,CO_(2) is displaced away from the well resulting in a forced imbibition process and thereby enhancing the capillary trapping *** post-injection of brine has also one more particular effect in strategies of horizontal injection and simultaneous CO_(2)/brine injection in different *** this regard,postbrine injection creates a stronger downward pressure gradient that counters the tendency of the CO_(2) plume to rise and therefore retards the CO_(2) in reaching the top of the *** increases the time that the CO_(2) can be in contact with the fresh formation brine and so enhances the trapping *** envisage that the post-

关键词： CO_(2)storage Brine injection Injection strategies Capillary trapping Dissolution trapping CO_(2)trapping CO_(2)sequestration

Cognitive Power Management in Wireless Sensor Networks

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Journal of Computer Science & Technology 2015年第6期30卷 1306-1317页

作者： seyed Mehdi Tabatabaei Vesal Hakami Mehdi Dehghan Department of Computer Engineering and Information Technology Amirkabir University of Technology Tehran 16846-13114 Iran

Dynamic power management （DPM） in wireless sensor nodes is a well-known technique for reducing idle energy consumption. DPM controls a node＇s operating mode by dynamically toggling the on/off status of its units based on predictions of event occurrences. However, since each mode change induces some overhead in its own right, guaranteeing DPM＇s eificiency is no mean feat in environments exhibiting non-determinism and uncertainty with unknown statistics. Our solution suite in this paper, collectively referred to as cognitive power management （CPM）, is a principled attempt toward enabling DPM in statistically unknown settings and gives two different analytical guarantees. Our first design is based on learning automata and guarantees better-than-pure-chance DPM in the face of non-stationary event processes. Our second solution caters tor an even more general setting in which event occurrences may take on an adversarial character. In this case, we formulate the interaction of an individual mote with its environment in terms of a repeated zero-sum game in which the node relies on a no-external-regret procedure to learn its mini-max strategies in an online fashion. We conduct numerical experiments to measure the performance of our schemes in terms of network lifetime and event loss percentage.

关键词： wireless sensor network cognitive power management learning automata external regret zero-sum game

Energy efficiency of small buildings with smart cooling system in the summer

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Frontiers in Energy 2022年第4期16卷 651-660页

作者： Yazdan DANESHVAR Majid SABZEHPARVAR seyed Amir Hossein HASHEMI Department of Civil Engineering Qazvin BranchIslamic Azad UniversityQazvin 314199-15195Iran Department of Industrial Engineering Collage of EngineeringKaraj BranchIslamic Azad UniversityKaraj 31499-68111Iran

In this paper,a novel cooling control strategy as part of the smart energy system that can balance thermal comfort against building energy consumption by using the sensing and machine programming technology was *** this goal,a general form of a building was coupled by the smart cooling system(SCS)and the consumption of energy with thermal comfort cooling of persons simulated by using the EnergyPlus software and compared with similar buildings without *** the beginning of the research,using the data from a survey in a randomly selected group of hundreds and by analyzing and verifying the results of the specific relationship between the different groups of people in the statistical society,the body mass index(BMI)and their thermal comfort temperature were obtained,and the sample building was modeled using the EnergyPlus *** result show that if an intelligent ventilation system that can calculate the thermal comfort temperature was used in accordance with the BMI of persons,it can save up to 35%of the cooling load of the building yearly.

关键词： smart home heating and cooling systems saving energy optimal consumption of energy

One-step,synthesis of Hantzsch esters and polyhydroquinoline derivatives using new organocatalyst

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Chinese Chemical Letters 2010年第5期21卷 563-567页

作者： seyed Meysam Baghbanian Samad Khaksar seyed Mohammad Vahdat Maryam Farhang Mahmood Tajbakhsh Chemistry Department Islamic Azad UniversityRasht BranchPole-taleshanPO Box 41325-3516RashtIran Chemistry Department Islamic Azad UniversityAyatollah Amoli BranchPO Box 678AmolIran Department of Chemistry Mazandaran UniversityBabolsar 47415Iran

Herein we report an efficient organocatalyst for the multicomponent Hantzsch reaction under mild *** product easily isolated by simple filtration and catalyst can be recovered.

关键词： Organocatalyst Four-component coupling reactions Polyhydroquinoline