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Fuzzy Constraint-Based Agent Negotiation

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Journal of Computer Science & Technology 2005年第3期20卷 319-330页

作者： Menq-WenLin k.RobertLai Ting-JungYu DepartmentofInformationManagement ChingYunUniversityChung-Li DepartmentofComputerScienceandEngineering YuanZeUniversityChung-Li

Conflicts between two or more parties arise for various reasons andperspectives. Thus, resolution of con-flicts frequently relies on some form of negotiation. Thispaper presents a general problem-solving framework.for modeling multi-issue multilateral negotiationusing fuzzy constraints. Agent negotiation is formulated as a distributed fuzzy constraintsatisfaction problem (DFCSP). Fuzzy constrains are thus used to naturally represent each agent''sdesires involving imprecision and human conceptualization, particularly when lexical imprecision andsubjective matters are concerned. On the other hand, based on fuzzy constraint-basedproblem-solving, our approach enables an agent not only to systematically relax fuzzy constraints togenerate a proposal, but also to employ fuzzy similarity to select the alternative that is subjectto its acceptability by the opponents. This task.of problem-solving is to reach an agreement thatbenefits all agents with a high satisfaction degree of fuzzy constraints, and move towards the dealmore quick.y since their search focuses only on the feasible solution space. An application tomultilateral negotiation of a travel planning is provided to demonstrate the usefulness andeffectiveness of our framework.

关键词： agent negotiation distributed fuzzy constraint satisfaction problem fuzzyconstraints

Selection criteria for cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in gastric cancer

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World Journal of Gastroenterology 2011年第37期17卷 4153-4156页

作者： Ingmar k.nigsrainer Department of General Visceral and Transplant SurgeryTübingen University Hospital

Peritoneal carcinomatosis in gastric cancer is associated with a dismal *** chemotherapy is not effective because of the existence of a blood-peritoneal *** surgery and intraperitoneal chemotherapy can improve survival and quality of life in selected *** selection for this multimodal approach is one of the most critical issues,and calls for interdisciplinary evaluation by radiologists,medical and surgical oncologists,and *** article sets forth criteria for selection of gastric cancer patients suffering from peritoneal carcinomatosis.

关键词： Peritoneal carcinomatosis Gastric cancer Hyperthermic intraperitoneal chemotherapy Cytoreductive surgery Selection criteria

Controlled Drug Release Studies of Atenolol Using Differently Sulfonated Acryloxyacetophenone and Methyl Methacrylate Copolymer Resins as Drug Carriers

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Chinese Journal of Polymer Science 2014年第3期32卷 280-291页

作者： k.Doraswamy P.Venk.ta Ramana Department of Chemistry Sri Krishnadevaraya University

2-Acryloxyacetophenone （AAP） was prepared and subjected to suspension polymerization with methyl methacrylate （MMA） using azobisisobutyronitrile （AIBN） as free radical initiator. The differently sulfonated AAP-MMA cross-link.d copolymer cationic exchange resins were prepared by sulfonation with concentrated sulphuric acid at 70 ~C. Several characteristics of the prepared resins were evaluated, i.e. FTIR, the ion-exchange capacity （IEC）, thermo gravimetric analysis （TGA）, particle size distribution and microscopic morphology. The resin characteristics were altered with degree of sulfonation, providing that differently sulfonated resins could be prepared. The behavior of atenolol （ATL） loading and in vitro release in the USP stimulated gastric and intestinal fluids of the obtained resins were evaluated. The drug loaded in the resin increased with increasing degree of sulfonation and hence the drug binding site in resin employed. The drug release was lower from the resins with higher content of sulfonic group due to the increase in the diffusive path depth. The drug release was a little lower in stimulated gastric fluid （SGF） than in stimulated intestinal fluids （SIF）. The basic groups, ionized to a little greater extent in SGF and preferred binding with the resin rather than releasing. Hence, the differently sulfonated resins could be utilized as novel carriers for drug delivery.

关键词： 2-Acryloxyacetophenone Methyl methacrylate Different sulfonation Cationic exchange resins Atenolol In vitro drug release.

Development of a fault-rupture environment in 3D: A numerical tool for examining the mechanical impact of a fault on underground excavations

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International Journal of Mining Science and Technology 2019年第1期29卷 105-111页

作者： Bo-Hyun k.m Mark.k.Larson Spok.ne Mining Research Division CDC/NIOSH

While faults are commonly simulated as a single planar or non-planar interface for a safety or stability analysis in underground mining excavation, the real 3D structure of a fault is often very complex, with different branches that reactivate at different times. Furthermore, these branches are zones of nonzero thick.ess where material continuously undergoes damage even during interseismic periods. In this study, the initiation and the initial evolution of a strik.-slip fault was modeled using the FLAC3D software program. The initial and boundary conditions are simplified, and mimic the Riedel shear experiment and the constitutive model in the literature. The FLAC3D model successfully replicates and creates the 3D fault zone as a strik.-slip type structure in the entire thick.ess of the model. The strik.-slip fault structure and normal displacement result in the formation of valleys in the model. Three panels of a longwall excavation are virtually placed and excavated beneath a main valley. The characteristics of stored and dissipated energy associated with the panel excavations are examined and observed at different stages of shear strain in the fault to evaluate bump potential. Depending on the shear strain in the fault, the energy characteristics adjacent to the longwall panels present different degrees of bump potential, which is not possible to capture by conventional fault simulation using an interface.

关键词： 3D fault zone Strik.-slip fault FLAC3D Bump potential Energy characteristics

Corrosion Behavior and Hardness of Al-M (M:Mo,Si,Ti,Cr) Alloys

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 333-341页

作者： J.Esquivel R.k.Gupta Department of Chemical and Biomolecular Engineering The University of Akron Akron OH 44325-3906 USA

The corrosion behavior of Al-5 at.% Cr, A1-5 at.% Si, Al-5 at.% Mo and Al-5 at.% Ti produced via casting and Al-5 at.% Cr produced by high-energy ball milling and subsequent consolidation by cold pressing was studied using potentiodynamic polarization and surface analysis following constant immersion tests. Alloys were characterized using a scanning electron microscope coupled with the energy-dispersive X-ray spectroscopy and X-ray diffraction analysis. Hardness, a representative of the strength, was also measured. The alloys produced by casting contained coarse intermetallics and therefore exhibited poor corrosion resistance. Al-5 at.% Cr alloy produced by high-energy ball milling exhibited a significantly improved corrosion resistance and hardness, which was attributed to the grain refinement to nanoscale and extended solid solubility of Cr in AL The study indicated that the high-energy ball milling was capable of producing Al alloys with improved corrosion behavior and hardness.

关键词： Corrosion Mechanical alloying Casting Aluminum alloys

A novel approach to investigate effect of magnetic field on dynamic properties of natural rubber based isotropic thick.magnetorheological elastomers in shear mode

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Journal of Central South University 2015年第7期22卷 2612-2619页

作者： Sriharsha Hegde k.tari k.ran k.V Gangadharan Department of Mechanical Engineering National Institute of Technology

The preparation of natural rubber based isotropic thick.magnetorheological elastomers(MRE) was focused on by varying the percentage volume concentration of carbonyl iron powder and developing a test set up to test the dynamic properties. Effect of magnetic field on the damping ratio was studied on the amplification region of the transmissibility curve. The viscoelastic dynamic damping nature of the elastomer was also studied by analyzing the force-displacement hysteresis graphs. The results show that MR effect increases with the increase in magnetic field as well as carbonyl iron powder particle concentration. It is observed that softer matrix material produces more MR effect. A maximum of 125% improvement in the loss factor is observed for the MRE with 25% carbonyl iron volume concentration. FEMM simulation shows that as carbonyl iron particle distribution becomes denser, MR effect is improved. FEMM analysis also reveals that if the distance between the adjacent iron particles are reduced from 20 μm to 10 μm, a 40% increase in stored energy is observed.

关键词： magnetorheological elastomer natural rubber carbonyl iron powder(CIP) dynamic analysis

Sulfide oxidation in fluidized bed bioreactor using nylon support material

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Journal of Environmental Sciences 2012年第3期24卷 512-519页

作者： Varsha Midha M k.Jha Apurba Dey Department of Chemical Engineering National Institute of TechnologyJalandhar 144011India Department of Biotechnology National Institute of Technology DurgapurIndia

A continuous fluidized bed bioreactor （FBBR） with nylon support particles was used to treat synthetic sulfide wastewater at different hydraulic retention time of 25, 50 and 75 min and upflow velocity of 14, 17 and 20 m/hr. The effects of upflow velocity, hydraulic retention time and reactor operation time on sulfide oxidation rate were studied using statistical model. Mixed culture obtained from the activated sludge, tak.n from tannery effluent treatment plant, was used as a source for microorganisms. The diameter and density of the nylon particles were 2-3 mm and 1140 k./m3, respectively. Experiments were carried out in the reactor at a temperature of （30 ± 2）°C, at a fixed bed height of 16 cm after the formation of biofilm on the surface of support particles. Biofilm thick.ess reached （42 ± 3） μm after 15 days from reactor start-up. The sulfide oxidation, sulfate and sulfur formation is examined at all hydraulic retention times and upflow velocities. The results indicated that almost 90%-92% sulfide oxidation was achieved at all hydraulic retention times. Statistical model could explain 94% of the variability and analysis of variance showed that upflow velocity and hydraulic retention time slightly affected the sulfide oxidation rate. The highest sulfide oxidation of 92% with 70% sulfur was obtained at hydraulic retention time of 75 min and upflow velocity of 14 m/hr.

关键词： biofilm fluidized bed bioreactor mixed culture sulfide oxidation

Changes in lamellar microstructure by parallel twinning during creep in soft PST crystal of TiAl alloy

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中国有色金属学会会刊：英文版 2002年第4期12卷 561-568页

作者： H.Y.k.m k.Maruyama DepartmentofMaterialScience GraduateSchoolofEngineeringTohokuUniversity02AobayamaSendai980－8579Japan DepartmentofMaterialScience GraduateSchoolofEngineeringTohokuUniversity02AobayamaSendai980－8

Compression creep tests of a Ti-48%Al (mole fraction) alloy were carried out at 1?150?k.with soft-orientated PST crystal. Parallel twinning took.place during the creep. Changes in lamellar microstructure caused by the parallel twinning were investigated, and their effects on creep deformation behavior were discussed. The results show that the parallel twinning occurs in an early stage of creep, and mak.s significant contribution to creep strain in the domains favorably oriented for the twinning. The nucleation of parallel twins finishes at a strain of about 3%. There is a critical resolved shear stress for parallel twinning, and it is about 50?MPa in the Ti 48%Al PST crystals at 1?150?k. The activity of parallel twinning increases with increasing applied stress or in a coarse lamellar material. The addition of parallel twins reduces the average value of lamellar spacing. In general, the refinement of lamellar structure should improve creep resistance. However the strengthening by parallel twinning is not evident in creep of the soft PST crystals because the soft deformation modes are the dominant deformation mode in the crystals.

关键词：显微结构 TiAl合金软PST晶体蠕变孪晶

Synthesis of CeO_2 nanoparticles using flame-assisted spray pyrolysis and solid state diffusion routes

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Rare Metals 2015年第1期34卷 6-11页

作者： k.R.Nemade S.A.Waghuley Department of Physics Sant Gadge Baba Amravati University

The stable and crystalline phase of pure nano- structured CeO2 was directly synthesized by flame-assisted spray pyrolysis and solid state diffusion route. Different characterization techniques, including X-ray diffraction （XRD）, scanning electron microscopy （SEM）, Fourier trans- form infrared spectroscopy （FTIR）, ultraviolet-visible （UV- Vis）, and thermo gravimetric analysis （TGA） were employed to examine the structural, morphological, optical, and thermal properties of the final product. Similarly, the comparative carbon dioxide （CO2）-sensing response of as-synthesized CeO2 nanoparticles by both routes was also reported. The CeO2 nanoparticles synthesized by solid state diffusion method exhibit good sensitivity （3.38 %） at room temperature, low operating temperature （398 k., fast response time （32 s）, and recovery time （36 s） along with good stability.

关键词： CO2 gas sensing Flame-assisted spraypyrolysis Solid state diffusion