Relevant bibliographies by topics / Differential reinforcement of alternative behavior

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Differential reinforcement of alternative behavior'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Differential reinforcement of alternative behavior"

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Vollmer, Timothy R., Henry S. Roane, Joel E. Ringdahl, and Bethany A. Marcus. "EVALUATING TREATMENT CHALLENGES WITH DIFFERENTIAL REINFORCEMENT OF ALTERNATIVE BEHAVIOR." Journal of Applied Behavior Analysis 32, no. 1 (1999): 9–23. http://dx.doi.org/10.1901/jaba.1999.32-9.

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Liddon, Clare J., Michael E. Kelley, and Christopher A. Podlesnik. "An animal model of differential reinforcement of alternative behavior." Learning and Motivation 58 (May 2017): 48–58. http://dx.doi.org/10.1016/j.lmot.2017.04.001.

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Vollmer, Timothy R., Kerri P. Peters, Faris R. Kronfli, Lindsay A. Lloveras, and Vivian F. Ibañez. "On the definition of differential reinforcement of alternative behavior." Journal of Applied Behavior Analysis 53, no. 3 (2020): 1299–303. http://dx.doi.org/10.1002/jaba.701.

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Fritz, Jennifer N., Lynsey M. Jackson, Nicole A. Stiefler, Barbara S. Wimberly, and Amy R. Richardson. "Noncontingent reinforcement without extinction plus differential reinforcement of alternative behavior during treatment of problem behavior." Journal of Applied Behavior Analysis 50, no. 3 (2017): 590–99. http://dx.doi.org/10.1002/jaba.395.

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Athens, Elizabeth S., and Timothy R. Vollmer. "AN INVESTIGATION OF DIFFERENTIAL REINFORCEMENT OF ALTERNATIVE BEHAVIOR WITHOUT EXTINCTION." Journal of Applied Behavior Analysis 43, no. 4 (2010): 569–89. http://dx.doi.org/10.1901/jaba.2010.43-569.

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Fuhrman, Ashley M., Wayne W. Fisher, Brian D. Greer, Timothy A. Shahan, and Andrew R. Craig. "Resurgence following traditional and interdependent differential reinforcement of alternative behavior." Behavioral Development 26, no. 1 (2021): 29–42. http://dx.doi.org/10.1037/bdb0000101.

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MacNaul, Hannah L., and Leslie C. Neely. "Systematic Review of Differential Reinforcement of Alternative Behavior Without Extinction for Individuals With Autism." Behavior Modification 42, no. 3 (2017): 398–421. http://dx.doi.org/10.1177/0145445517740321.

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The purpose of this article is to review the literature on differential reinforcement of alternative behavior procedures without extinction for individuals with autism. Using predetermined inclusion criteria, a total of 10 studies were included and summarized in terms of the following: (a) participant characteristics (e.g., sex, age, and diagnosis), (b) treatment setting, (c) problem behavior, (d) function, (e) alternative behavior, (f) intervention, (g) outcomes, and (h) conclusiveness of evidence. Of the 10 studies, nine demonstrated positive effects and one mixed effects. Five studies successfully reduced problem behavior by manipulating different reinforcement parameters (magnitude, immediacy, and quality) and four manipulated the schedule of reinforcement. One study had mixed results with two of the three participants requiring extinction. The findings of this review suggest that variations of differential reinforcement of alternative behavior interventions without an extinction component may be considered promising practices for the treatment of challenging behavior in individuals with autism.
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LeGray, Matthew W., Brad A. Dufrene, Sterett Mercer, D. Joe Olmi, and Heather Sterling. "Differential Reinforcement of Alternative Behavior in Center-Based Classrooms: Evaluation of Pre-teaching the Alternative Behavior." Journal of Behavioral Education 22, no. 2 (2013): 85–102. http://dx.doi.org/10.1007/s10864-013-9170-8.

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Petscher, Erin S., Catalina Rey, and Jon S. Bailey. "A review of empirical support for differential reinforcement of alternative behavior." Research in Developmental Disabilities 30, no. 3 (2009): 409–25. http://dx.doi.org/10.1016/j.ridd.2008.08.008.

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Schlichenmeyer, Kevin J., William V. Dube, and Mariela Vargas-Irwin. "Stimulus Fading and Response Elaboration in Differential Reinforcement for Alternative Behavior." Behavioral Interventions 30, no. 1 (2015): 51–64. http://dx.doi.org/10.1002/bin.1402.

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Dissertations / Theses on the topic "Differential reinforcement of alternative behavior"

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Crook, Kayla Camille. "THE EFFECTS OF DIFFERENTIAL REINFORCEMENT OF ALTERNATIVE BEHAVIOR ON RESPONSE PERSISTENCE." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1713.

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This study evaluated the effects differential reinforcement of alternative behavior on response persistence. A total of four participants from a local 2nd grade classroom participated in this study. A two component multiple schedule that included baseline (i.e., reinforcement of a target response) and DRA (i.e., reinforcement of an alternative response and reinforcement of the target response) conditions was conducted. Attempts were made to keep rates of reinforcement as similar as possible across components. Extinction was then implemented in the context associated with each component, and response persistence was measured. Results indicated three distinct patterns of responding: 1) alternative behavior was never emitted during the DRA component (two participants), 2) only the alternative behavior was emitted during the DRA component (one participant), and 3) both the target and the alternative behaviors were emitted during the DRA component (one participant). Overall, the results of this study indicated that DRA could result in inadvertent strengthening of target behavior. However, that strengthening may be mitigated if reinforcer rates are similar.
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Chalmers, Andrea Harley. "Teacher Preference for Response Cost and Differential Reinforcement of Alternative Behavior within Token Economies." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2279.

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Previous research on implementer preference for behavioral interventions is limited. This study empirically evaluated teachers’ preference for implementing two types of token economies in a classroom to increase on-task behavior of students. The two types of token economies were response cost and differential reinforcement of alternative behavior implemented using an interdependent group contingency. The results showed both teachers preferred response cost over differential reinforcement of alternative behavior.
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Kunnavatana, Soraya Shanun. "Manipulating Parameters of Reinforcement to Reduce Problem Behavior without Extinction." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2298.

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Research has demonstrated that function-based interventions are most effective for addressing problem behavior. However, many function-based interventions, such as differential reinforcement of alternative behavior (DRA), rely on extinction procedures. Extinction is not feasible in all cases and can be counter-therapeutic if implemented without optimal treatment integrity. Researchers have successfully implemented DRA without extinction when various parameters of reinforcement (rate, quality, magnitude, immediacy) have been manipulated to favor alternative behavior; that is, participants engaged in higher rates of alternative behavior when reinforcement was delivered contingent on both alternative and problem behavior, but the alternative response produced better reinforcement in terms of rate, quality, magnitude, or immediacy. Parameter sensitivity, however, has been found to be idiosyncratic and therefore warrants individual assessment. Previous researchers have assessed individual sensitivities to parameters of reinforcement in the context of problem behavior; however, this resulted in problem behavior occurring during assessment, which could be problematic given severe problem behavior. The purpose of this study was to use arbitrary responses to assess individual sensitivities to quality, magnitude, and immediacy of reinforcement maintaining problem behavior and use the results to implement an intervention for problem behavior without extinction. The results indicate that arbitrary responses may be used to identify individual sensitivities to parameters of reinforcement that maintains problem behavior. Additionally, interventions were more effective when parameters for which participants were most sensitive were manipulated than when parameters for which participants were least sensitive were manipulated.
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Hitch, Elena J. "THE EFFECTS OF TEACHER IMPLEMENTATION OF DIFFERENTIAL REINFORCEMENT OF ALTERNATIVE BEHAVIOR IN INDIVIDUALS WITH AUTISM SPECTRUM DISORDER." UKnowledge, 2019. https://uknowledge.uky.edu/edsrc_etds/73.

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The purpose of this study was to evaluate the effects of a classroom teacher implementing trail-based functional analyses (FAs), experimentally evaluate the effects of a classroom teacher implementing differential reinforcement of alternative (DRA) procedures with participants diagnosed with autism spectrum disorder in the context of a natural setting, and assess the feasibility of the DRA for the classroom teacher. A multiple baseline with an embedded ABAB design was used for one participant and an ABAB design was used for the second participant to measure the percentage of the participants’ engagement in the alternative behavior and the target behavior. Results showed that the classroom teacher could implement the trail-based FAs with fidelity, DRA procedures were effective for both participants, and the teacher was neutral in regard to the feasibility of the procedures.
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Spangenberg, Katrina. "An Investigation of the Effects of Differential Reinforcement of Alternative Behavior on Students with Mild/Moderate Disabilities in a School Classroom." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/38.

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This study investigated the effects of differential reinforcement of alternative behavior (DRA), a behavior reduction procedure, on problem behavior exhibited by three elementary school students in a general education classroom. DRA involves reinforcement of an alternative behavior while withholding reinforcement for the inappropriate behavior. The three participants were classified as experiencing mild/moderate disabilities but received most services (and participated in this research) in a general education classroom. Problem behaviors included off-task, talk-outs, and inappropriate touching. Alternative behaviors included on-task and hand-raising to get teacher attention. Results indicated that DRA decreased off-task and talk-out behavior for two participants, although effects were variable. Results for a third participant indicated minimal effects on reduction of both off-task and inappropriate touching behaviors. For two participants, differential reinforcement of lower rates of behavior (DRL) was implemented following DRA in attempt to establish stimulus control over problem behavior. However, results of the DRL intervention were mixed. Results are discussed in terms of differences between investigating the effects DRA in classroom versus clinic settings and establishing and maintaining contingencies for reinforcement.
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Smith, Brooke M. "Effects of Differential Rates of Alternative Reinforcement on Resurgence of Human Behavior: A Translational Model of Relapse in the Anxiety Disorders." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4511.

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Behavioral and cognitive-behavioral psychotherapies utilizing exposure are considered the gold standard in anxiety disorder treatments. Despite their success, relapse remains problematic, especially over long-term follow up periods. Basic researchers traditionally conceptualize the mechanism of exposure as Pavlovian extinction, but this may overlook the important role of operant processes in the treatment and relapse of anxiety. Resurgence, in which a previously extinguished behavior returns following the extinction of another behavior that has replaced it, is a promising model of operant relapse. Nonhuman research on resurgence has shown that, while higher rates of alternative reinforcement result in faster and more comprehensive extinction of target behavior, they also result in greater resurgence. This somewhat paradoxical finding could have important implications for clinicians treating anxiety, as higher rates of alternative reinforcement may have the unintended side effect of producing greater relapse of avoidance if access to positive reinforcement later becomes unavailable. The current study took a translational approach to investigating the effects of rich and lean rates of alternative reinforcement on extinction and magnitude of resurgence in typically developing humans using a computerized task. Three groups (Rich, n = 18; Lean, n = 18; Control, n = 10) underwent acquisition of a target response. Target responding was then placed on extinction while varying rates of reinforcement for an alternative behavior were delivered. Resurgence was assessed under extinction conditions for all groups. Results indicated that the rich rate of alternative reinforcement facilitated extinction while the lean rate ultimately had a detrimental effect on extinction. Within groups, Rich and Lean experienced significant resurgence, while Control did not. Effect sizes were large. Between groups, Rich resurged more than Lean and Control. Effect sizes were again large. There was no significant difference in resurgence between Lean and Control. Implications for the treatment of anxiety disorders and future research directions are discussed.
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Ingvarsson, Einar Thor. "The Effects of Non-differential Reinforcement and Differential Reinforcement on Problem Behaviors and Accuracy of Responding of Autistic Children." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3135/.

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The effects of non-differential reinforcement and differential reinforcement on problem behaviors and accuracy of responding of autistic children was examined. In experiment 1, one child with autism participated, and in experiment 2, two children with autism participated. In the non-differential reinforcement condition both prompted and unprompted responses were reinforced. In the differential reinforcement condition only unprompted responses were reinforced. Overall, problem behaviors were more frequent in the non-differential reinforcement condition. In experiment 1, accuracy was higher in the differential reinforcement condition, while experiment 2 showed inconclusive results with regards to accuracy. It is concluded that non-differential reinforcement can decrease problem behaviors in teaching situations, but may not be sufficient to ensure acquisition of target tasks.
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DeFiore, Kristin Pauline. "EXPLORING THE EFFECTS OF A DIFFERENTIAL REINFORCEMENT SYSTEM ON MANDING BEHAVIOR." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1787.

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The use of a concurrently running differential reinforcement of alternative behavior intervention was used to manipulate manding behavior in a small sample of young adults with autism. Three young adults with autism aged 17-21, two males and one female, who had severely limited verbal language and communication devices participated in this study. Differential reinforcement was used to alter the mand topography chosen by each participant during manding sessions. Results indicate that by altering the quantity of highly preferred items individuals with autism can demonstrate flexibility in the topography of their language and respond with the mode of communication that is programmed for more reinforcement without the use of punishment or extinction. This research expands on the functional communication training (FCT) literature and the use of differential reinforcement in the use of mand training and also replicates previous research suggesting that punishment and extinction may not be necessary to reduce less preferred behavior.
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Daddario, Rosemarie. "Differential Reinforcement Of Other Behavior (DRO) Applied Classwide With Young Children." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1278438889.

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Palmer, Ashlyn. "Using Concurrent Schedules of Reinforcement to Decrease Behavior." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062900/.

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We manipulated delay and magnitude of reinforcers in two concurrent schedules of reinforcement to decrease a prevalent behavior while increasing another behavior already in the participant's repertoire. The first experiment manipulated delay, implementing a five second delay between the behavior and delivery of reinforcement for a behavior targeted for decrease while no delay was implemented after the behavior targeted for increase. The second experiment manipulated magnitude, providing one piece of food for the behavior targeted for decrease while two pieces of food were provided for the behavior targeted for increase. The experiments used an ABAB reversal design. Results suggest that behavior can be decreased without the use of extinction when contingencies favor the desirable behavior.
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Books on the topic "Differential reinforcement of alternative behavior"

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Thompson, Rachel H. Reversal Effects under extinction, noncontingent reinforcement and differential reinforcement of other behavior: A comparative analysis. 2001.

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Practicing Harm Reduction Psychotherapy: An Alternative Approach to Addictions. The Guilford Press, 2000.

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Denning, P. Practicing Harm Reduction Psychotherapy: An Alternative Approach to Addictions. The Guilford Press, 2004.

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Blonigen, Daniel M., John W. Finney, Paula L. Wilbourne, and Rudolf H. Moos. Psychosocial Treatments for Substance Use Disorders. Oxford University Press, 2015. http://dx.doi.org/10.1093/med:psych/9780199342211.003.0023.

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The most effective psychosocial modalities for treating substance use disorders are cognitive-behavioral interventions, motivational interviewing and motivational enhancement, contingency management, community reinforcement, behavioral couples and family therapies, and 12-step facilitation approaches. The foci of these interventions include substance use behavior, patients’ life contexts, and their social and personal resources. Limited evidence is available for these interventions’ differential effectiveness. Brief interventions are highly effective in the treatment of alcohol use disorders. However, as stand-alone treatments, they are best suited for individuals with mild to moderate alcohol use problems. Therapists who are interpersonally skilled, empathic, and nonconfrontational, and who develop a strong therapeutic alliance, are more effective at helping patients achieve better outcomes.
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Book chapters on the topic "Differential reinforcement of alternative behavior"

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Stabel, Aaron, Kimberly Kroeger-Geoppinger, Jennifer McCullagh, et al. "Differential Reinforcement Procedures of Alternative Behavior (DRA/DRAlt) of Incompatible Behavior (DRI)." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_1904.

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Zane, Thomas. "Differential Reinforcement Procedures of Alternative Behavior (DRA/DRAlt) of Incompatible Behavior (DRI)." In Encyclopedia of Autism Spectrum Disorders. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-91280-6_1904.

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Stabel, Aaron, Kimberly Kroeger-Geoppinger, Jennifer McCullagh, et al. "Differential Reinforcement Procedures of Other Behavior (DRO)." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_1903.

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Zane, Thomas, and Cheryl Davis. "Differential Reinforcement Procedures of Other Behavior (DRO)." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2020. http://dx.doi.org/10.1007/978-1-4614-6435-8_1903-3.

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Zane, Thomas, and Cheryl Davis. "Differential Reinforcement Procedures of Other Behavior (DRO)." In Encyclopedia of Autism Spectrum Disorders. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-91280-6_1903.

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Lueptow, Lindsay M., and James M. O’Donnell. "Differential-Reinforcement-of-Low-Rate Behavior in Rodents as a Screen for Antidepressant Efficacy." In Mood and Anxiety Related Phenotypes in Mice. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-313-4_18.

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Junges, Sebastian, Nils Jansen, and Sanjit A. Seshia. "Enforcing Almost-Sure Reachability in POMDPs." In Computer Aided Verification. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81688-9_28.

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AbstractPartially-Observable Markov Decision Processes (POMDPs) are a well-known stochastic model for sequential decision making under limited information. We consider the EXPTIME-hard problem of synthesising policies that almost-surely reach some goal state without ever visiting a bad state. In particular, we are interested in computing the winning region, that is, the set of system configurations from which a policy exists that satisfies the reachability specification. A direct application of such a winning region is the safe exploration of POMDPs by, for instance, restricting the behavior of a reinforcement learning agent to the region. We present two algorithms: A novel SAT-based iterative approach and a decision-diagram based alternative. The empirical evaluation demonstrates the feasibility and efficacy of the approaches.
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Malott, Richard W., and Kelly T. Kohler. "Differential Reinforcement and Differential Punishment." In Principles of Behavior, 8th ed. Routledge, 2021. http://dx.doi.org/10.4324/9781003157014-17.

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"Differential Reinforcement and Differential Punishment." In Principles of Behavior. Psychology Press, 2015. http://dx.doi.org/10.4324/9781315663104-12.

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Martin, Garry, and Joseph Pear. "Differential Reinforcement Procedures to Decrease Behavior." In Behavior Modification. Routledge, 2019. http://dx.doi.org/10.4324/9780429020599-16.

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Conference papers on the topic "Differential reinforcement of alternative behavior"

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Utami, Aryani Rahmah, and Rini Hildayani. "Changing Hitting Chest to be Stroking Chest with Shaping and Differential Reinforcement of Alternative Behavior Method for a child with Autism Spectrum Disorder with Intellectual Impairment." In Proceedings of the 2nd International Conference on Intervention and Applied Psychology (ICIAP 2018). Atlantis Press, 2019. http://dx.doi.org/10.2991/iciap-18.2019.1.

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Santoso, Elisabeth, and Mayke Sugianto Tedjasaputra. "The Effectiveness of Antecedents Control and Differential Reinforcement of Alternative Behaviors in Reducing Screen Time on an Adolescent with Autism Spectrum Disorder: A Single-case Design." In Proceedings of the 2nd International Conference on Intervention and Applied Psychology (ICIAP 2018). Atlantis Press, 2019. http://dx.doi.org/10.2991/iciap-18.2019.4.

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Firnady, Dhisty Azlia, and Lia Mawarsari Boediman. "The Effectiveness of Antecedents, Control, and Differential Reinforcement of Incompatible Behavior in Treating a Childhood Eating Disorder." In Proceedings of the 2nd International Conference on Intervention and Applied Psychology (ICIAP 2018). Atlantis Press, 2019. http://dx.doi.org/10.2991/iciap-18.2019.21.

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AL-Hamrani, Abathar, and Wael Alnahhal. "Shear Behavior of Fiber Reinforced Concrete Beams with Basalt FRP Reinforcing Bars and Glass FRP Stirrups." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0081.

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The State of Qatar suffers from a harsh environment in the form of high temperature that prevails almost all year round in addition to severe humidity and coastal conditions. This exposure leads to the rapid deterioration and the reduction of the life span of reinforced concrete (RC) infrastructure. The full functionality and safe use of the infrastructure in such environments can only be maintained by holistic approaches including the use of advanced materials for new construction.With the developments in materials science, the advanced composites, especially fiber reinforced polymer (FRP) materials are becoming viable alternatives to the traditional construction materials. Having superior durability against corrosion, versatility for easy in-situ applications and enhanced weight-to-strength ratios compared to their counterpart conventional materials, FRPs are promising to be the future of construction materials. More recently, FRP composites made of basalt FRP (BFRP) have been introduced as an alternative to traditional steel reinforcement at a price comparable to glass fibers of about $2.5–5.0 per kg, which is significantly lower than carbon fibers. BFRP bars are characterized by their corrosion resistance, greater strain at failure than carbon fibers, and better chemical resistant than glass fibers, particularly in a strongly alkaline environment. Knowing that FRP bars are anisotropic materials with weaker strength in the transverse direction compared with the longitudinal direction, and having a relatively low modulus of elasticity compared with steel reinforcement, it is important to investigate the concrete contribution to shear strength for beams reinforced with BFRP bars. In addition, due to the elastic performance of the FRP reinforcing bars compared with steel bars, FRP bars fail in a brittle manner. Moreover, concrete itself is a brittle material. Previous investigations have shown that using discrete fibers in concrete increases its ductility due to the large compressive strains exhibited at failure. Therefore, basalt macro-fibers is proposed in this study. A total of 14 concrete beam specimens were tested under four point loading until failure. The parameters investigated included the reinforcement ratio (2rb, 3.1rb, and 4.53rb, where rb is the balanced reinforcement ratio), the span to depth ratio (a/d=2.5, and a/d=3.3), the spacing between stirrups (S1=170mm, and S2=250mm) and the basalt fiber volume fraction (0%, 0.75% and 1.5%). Test results clearly showed that both BFRP bars and basalt macro-fibers can be used as sustainable and eco-friendly alternative materials in Concrete Structures in Qatar.
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Landler, Josef, and Oliver Fischer. "Punching Shear Capacity of Steel Fiber Reinforced Concrete Slab- Column Connections." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0467.

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<p>To design flat slabs directly supported on columns, the punching shear resistance of the slab is a main factor. It can be increased in the vicinity of the slab-column connection with punching shear reinforcement, like bent up bars or shear studs, to bear the high reaction forces. However, the usage of punching shear reinforcement requires the knowledge of special design rules and often leads to problems and deficiencies in construction.</p><p>Fiber reinforced concrete seems to be a promising alternative to conventional punching shear reinforcement. To investigate the load bearing behavior of the slab-column connection using fiber reinforced concrete, a total of eight punching shear tests were performed. The specimens were realized with a typical top and bottom flexural reinforcement, but without punching shear reinforcement. Varied parameters were the slab thickness with 250 mm and 300 mm and the fiber content V<sub>f</sub> with 0.5 Vol.-% and 1.0 Vol.-%. To investigate the influence of modern fiber types, normal- and high-strength steel fibers with normal- and double-hooked-ends were used.</p><p>In all eight experimental tests, the intended punching shear failure was achieved. The capable load using fiber reinforced concrete increased by 20 % to 50 % compared to the reference tests without steel fibers, depending on the fiber type and the fiber content V<sub>f</sub>. Additionally, this load increase was accompanied by a significant improvement in ductility. The post-cracking behavior was noticeably influenced by the used steel fiber type. An influence of the slab thickness or steel fiber type on the shear strength contributed by the fiber reinforced concrete could not be determined.</p>
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Akinyede, Oladapo, Ram Mohan, Ajit Kelkar, and Jag Sankar. "Effect of Grafting Methodology of Nano-Particle Reinforcement on the Performance of Structural Hybrid Composite." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13783.

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Inclusion of nano-sized alumina by the surface treatment of S2 fiberglass (fiber modification) or ultrasonically exfoliated in epoxy resin system (resin modification) has been shown to provide epoxy-fiberglass hybrid composite systems with changes in their mechanical/ damage behavior under static tensile loading conditions. Integration of alumina nano-particles in epoxy-S2 fiberglass to form hybrid composites has not only shown improvements in the material properties, but also changes in the failure mechanism of the material system. This phenomenon is influenced by the changes in constituent interaction and its load transfer mechanism. In the processing of these hybrids composite systems, alumina nano-particles (sized at 110nm) are functionalized and grafted into epoxy composite material system during material processing via resin solution treatment and fabric surface treatment. These alumina embedding methodologies to form hybrid composites employed are the resin modification and fiber modification in conjunction with the conventional vacuum assisted resin transfer molding (VARTM) process for the manufacture of composite laminates. The chemical bonding and adhesion between the inorganic alumina and the organic resin is also enhanced via the functional treatment of the alumina particles with a coupling agent in the form of tris-2-methyoxyethoxy vinylsilane- T2MEVS (silane coupling agent). Processing methodologies are used to fabricate particulate reinforcement for various (<5%wt) compositions. Performance evaluation is carried to study the effect of the nano-particulate alumina on mechanical properties. Thermo-physical properties changes caused by particulate inclusion in hybrid material matrix phase are studied via Differential Scanning Calorimetry (DSC) and are also discussed.
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Zu, Jean W., and Edward Wong. "Dynamic Response of a Spinning Timoshenko Shaft With Coupled Bending and Torsion." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4026.

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Abstract The dynamic behavior of a simply-supported spinning Timoshenko shaft with coupled bending and torsion is analyzed. This is accomplished by transforming the set of nonlinear partial differential equations of motion into a set of linear ordinary differential equations. This set of ordinary differential equations is a time-varying system and the solution is obtained analytically in terms of Chebyshev series. The analytical method is a viable alternative to numerical methods and can provide the full range of the required solutions. A beating phenomenon is observed from the numerical simulations. This phenomenon occurs when the system has two natural frequencies close to each other. It is also shown that the period of torsional vibrations is much shorter than the period of oscillations in transverse deflections and in bending angles.
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Bhide, Kedar G., and Sheshadri Sreedhara. "Influence of Lewis Number on Heat Release Rate in Premixed Syngas Flames." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2438.

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Abstract Syngas is an attractive alternative to currently popular hydrocarbon fuels due to its ability to be synthesized from multiple sources and lower carbon content. Direct Numerical Simulation (DNS) studies on premixed and non-premixed syngas flames have recently received attention. In this light, DNS of turbulent premixed syngas has been performed. Influence of turbulence and differential diffusion effects on chemical pathways of fuels like Hydrogen and methane has been studied in the past. Similar study on syngas flame has not been reported in the literature. Two cases with variation in the intensity of turbulence have been reported in this study. Effect of differential diffusion and turbulence on heat release rate and fuel consumption rate has been discussed. The behavior of heat release rate and fuel consumption rate was largely similar between laminar and turbulent flames considered in this study. Influence of species Lewis number was found to be more pronounced than that of turbulence.
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9

Khasawneh, Firas A., Brian P. Mann, Tama´s Insperger, and Gabor Ste´pa´n. "Explanation for Low-Speed Stability Increases in Machining: Application of a Continuous Delay Model." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2287.

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This paper investigates the analysis of delay integro-differential equations to explain the increased stability behavior commonly observed at low cutting speeds in machining processes. In the past, this improved stability has been attributed to the energy dissipation from the interference between the workpiece and the tool relief face. In this study, an alternative physical explanation is described. In contrast to the conventional approach, which uses a point force acting at the tool tip, the cutting forces are distributed over the tool-chip interface. This approximation results in a second order delayed integro-differential equation for the system that involves a short and a discrete delay. A method for determining the stability of the system for an exponential shape function is described, and temporal finite element analysis is used to chart the stability regions. Comparisons are then made between the stability charts that use the conventional point force and those that use the distributed force model for continuous and interrupted turning.
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10

Haschka, Markus, and Volker Krebs. "A Direct Approximation of Cole-Cole-Systems for Time-Domain Analysis." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84579.

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Cole-Cole-systems are important in electrochemistry to represent impedances of galvanic elements like fuel cells. Fractional calculus has to be applied for system analysis of Cole-Cole-systems in the time-domain. The representation of fractional differential equations of Cole-Cole-systems is addressed in this contribution. Usually, the fractional derivation is approximated, to ensure that the fractional system can be represented by conventional differential equations of an integer order. This article presents a new opposite approach, which results by direct approximation of the Cole-Cole-systems by conventional linear time invariant systems. The method considered is based on the distribution density function of relaxation times of first order Debye-processes. This distribution density is an alternative representation of the transfer behavior of such a system. Several approximation methods, based on an analysis of the distribution density, are presented in this work. The feasibility of these methods will be demonstrated by a comparison of simulated data of the approximation models to ideal data and reference values, respectively.
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