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| 1 | Modified constrained adaptive formation control scheme for autonomous underwater vehicles under communication delays显示文摘The performance of a formation control algorithm for a group of autonomous underwater vehicles(AUVs)may be degraded due to communication constraints between the leader and the follower AUVs.Moreover,as the distance between the AUVs change due to ocean waves,the delay in communication also varies.In this study,a modified constrained adaptive controller(CAC)is proposed to resolve the issue of variable-delay as well as actuator saturation.Due to the on-line reduction of the cost function,the gains of the CAC are updated at each sampling time taking into account the effects of communication delay.This improves the path-following accuracy of the leader AUV as well as follower AUVs.The effectiveness of the proposed control algorithm is demonstrated by implementing it on a prototype AUV(ODRA-I)model.The obtained simulation and experimental results show that the follower AUVs maintain a desired distance from the leader AUV to avoid a collision.For the proposed algorithm,the desired path-following performance of the follower AUV is maintained even when the delay is changed from 0 to 5 s.Moreover,the proposed control algorithm is efficient in avoiding actuator saturation. | Chhavi Suryendu Bidyadhar Subudhi | 2020 | IET Cyber-Systems and Robotics2020，2，1： | 3 |
| 2 | Diagnostic potential of 16 kDa (HspX,a-crystalline) antigen for serodiagnosis of tuberculo- sis显示文摘 | Amit K Singh UB Chhavi P | 2012 | Indian J Med Res2012，135，5： | 1 |
| 3 | Analyzing fat embolism syndrome in trauma patients at AIIMS Apex Trauma Center, New Delhi,India显示文摘 | BABITA GUPTA NITA D'SOUZA CHHAVI SAWHNEY | 2011 | J Emergencies Trauma and Shock I2011，4，： | 1 |
| 4 | Assessment of hemostatic changes after crystalloid and colloid fluid preloading in trauma patients using standard coagulation parameters and thromboelastography显示文摘 | Chhavi Sawhney Arulselvi Subramanian Manpreet Kaur Ajaz Anjum Venencia Albert Kapil Soni Ajit Kumar | 2013 | Saudi Journal of Anaesthesia2013，，1： | 1 |
| 5 | Changes in gene expression in liver tissue from patients with fulminant hepatitis E显示文摘AIM: To study host gene expression and numberof immune cells in liver tissues from patients with fulminant hepatitis E(FH-E).METHODS: Microarray-based expression profiling was done using Illumina Human WG-6_v3_Bead Chip arrays on post-mortem liver tissue from 5 patients with FH-E,and compared with similar tissue from 6 patients with fulminant hepatitis B(FH-B; disease controls) and normal liver tissue from 6 persons.Differential expression was defined as ≥ 2.0-fold change with Benjamini-Hochberg false discovery rate below 0.05 using t-test in liver tissue from FH-B and FH-E,than healthy liver tissue.For some genes that showed differential expression in FH-E,microarray data were validated using quantitative reverse transcription PCR.Differentially expressed gene lists were then subjected to 'Gene Ontology' analysis for biological processes,and pathway analysis using Bio Carta database on the DAVID server.In addition,tissue sections were stained for CD4+,CD8+ and CD56+ cells using indirect immunohistochemistry; cells staining positive for each of these markers were counted and compared between groups.RESULTS: Compared to normal livers,those from patients with FH-E and FH-B showed differential expression of 3377 entities(up-regulated 1703,downregulated 1674) and 2572 entities(up 1164,down 1408),respectively.This included 2142(up 896,down 1246) entities that were common between the two sets; most of these belonged to metabolic,hemostatic and complement pathways,which are active in normal livers.Gene expression data from livers of patients with FH-E but not those of FH-B showed activation of several immune response pathways,particularly those involving cytotoxic T cells.The fold-change values of m RNA for selected genes in livers from FH-E than in normal liver tissue determined using quantitative reverse transcription PCR showed excellent concordance with microarray analysis.At immunohistochemistry,CD8+ T cells showed an increase in liver biopsies from both FH-E [median 53.4 per arbitrary unit area(range 31.2-99.9)] and FH-B [median 49.3(19.3-51.0); P = 0.005] compared to control liver tissue [median 6.9(3.1-14.9)].CONCLUSION: FH-E patients show CD8+ T cell infiltration and increased gene expression of cytotoxic T cell pathways in liver,suggesting a possible pathogenetic role for these cells. | Anshu Naik Amit Goel Vinita Agrawal Aditya N Sarangi Nanda Chhavi Vineeta Singh Shahid Jameel Rakesh Aggarwal | 2015 | World Journal of Gastroenterology2015，21，26： | 1 |
| 6 | Curcumin attenuates neurotoxicity induced by fluoride: An in vivoevidence显示文摘 | Chhavi Sharma Pooja Suhalka Piyu Sukhwal Neha Jaiswal Maheep Bhatnagar | 2014 | Pharmacognosy Magazine2014，，37： | 1 |
| 7 | Inhibitory effect of genistein on the invasive potential of human cervical cancer cells via modulation of matrix metalloproteinase-9 and tissue inhibitiors of matrix metalloproteinase-1 expression显示文摘 | Arif Hussain Geetganga Harish Sathyen Alwin Prabhu Javeria Mohsin Munawwar Ali Khan Tahir A. Rizvi Chhavi Sharma | 2012 | Cancer Epidemiology2012，，6： | 1 |
| 8 | Expression profiling of G2/M phase regulatory proteins in normal, premalignant and malignant uterine cervix and their correlation with survival of patients 显示文摘 | Chhavi Saxena M Singh S | 2010 | J Cancer Res Ther2010，6，2： | 1 |
| 9 | Expression profiling of G2/M phase regulatory proteins in normal,premalignant and malignant uterinecervix and their correlation with survival of patients显示文摘 | Chhavi Saxena M Singh S | 2010 | Cancer Res Ther2010，6，2： | 1 |
| 10 | Expression profiling of G2/M phase regulatory proteins in normal,premalignant and malignant uterine cervix and their correlation with survival of patients显示文摘 | Chhavi Saxena M Singh S | 2010 | J Cancer Res Ther2010，6，2： | 1 |
| 11 | Comparative evaluation of epidural fentanyl and butorphanol for postoperative analgesia 显示文摘 | PREMILA M CHHAVI M NAVEEEN M | 2006 | J Anaesth Clin Pharmacol2006，22，： | 1 |
| 12 | Expression profiling of G2/M phase regulatory proteins in normal, premalignant and malignant uterine cervix and their correlation with survival of patients显示文摘 | Chhavi Saxena M Singh S | 2010 | J Cancer Res Ther2010，6，2： | 1 |
| 13 | Expression profiling of G2/M phase regulatory proteins in normal, premalignant and malignant uterine cervix and their correlation with survival of patients显示文摘 | Chhavi Saxena M Singh S | 2010 | J Cancer Res Ther2010，6，2： | 1 |
| 14 | Full ener-gy peak efficiency calibration of HPGe detector forpoint and extended sources using Monte Carlo code显示文摘 | Chhavi A Sanhita C Goswami A | 2011 | J Radioanal Nucl Chem2011，287，： | 1 |
| 15 | Consequences of forced migration during early childhood on cognitive well-being in later childhood in Andhra Pradesh,India显示文摘Unlike its short-term impact on consumption and income,forced migration is expected to deliver a permanent shock to the overall well-being of households,specifically children in the stage of infancy.Studies on the effect of forced migration on child cognitive well-being are few in number.Therefore,the present study is intended to examine the consequences of forced migration during infancy on child cognition at later age.We hypothesized that the effect of forced migration on child cognitive wellbeing can be mitigated by social support.The study used longitudinal data from three waves of the Young Lives Study(YLS)conducted in 2002,2006–2007,and 2009 in the state of Andhra Pradesh,India.We used bivariate and multivariate regression models to analyze the consequences of forced migration in early childhood on the cognitive wellbeing in later childhood.The information on forced migration was collected in Wave 1(at age 1),whereas the information on the cognitive well-being of the children was collected in Wave 3(at age 8).Child cognitive well-being was measured using scores obtained by the children on the Peabody Picture Vocabulary Test(PPVT),math,Early Grade Reading Assessment(EGRA),and memory tests.The results of the bivariate analysis show that the mean PPVT,math,EGRA,and memory scores obtained by children from the migrated households were lower than those obtained by children from the non-migrated households.Results of the multivariate linear regression models also show that children from the migrated households were statistically less likely to achieve higher scores on math(coefficient:-2.008,95%C.I.-3.108,-0.908),EGRA(coefficient:-0.746,95%C.I.-1.366,-0.126),and memory(coefficient:-0.503,95%C.I.-0.834,-0.173)as compared to children from the non-migrated households.Our findings also indicate that the effect of forced migration on child cognitive wellbeing was not mitigated by social support.Findings of this study conclude that forced migration during infancy has a significant effect on child cognitive well-being at later age.Therefore,interventions should be made,paying attention to the most vulnerable children who were displaced during critical development ages. | Ashish Kumar Upadhyay Swati Srivastava Chhavi Paul | 2017 | International Journal of Population Studies2017，3，2： | 0 |
| 16 | Decision Models for Cargo Container Loading with an Intermediate Hub显示文摘In this research,optimization models for air freight forwarders that considers renting air containers and assigning cargos to containers are proposed with the objective to minimize total operating cost.The transportation network consists of an intermediate hub which is used for unloading and sorting cargos before the delivery to destinations.The models provide operational decision at both regions and hub.The proposed models are formulated based on the cargo demand information provided by the forwarders’customers.The models are applicable for air freight forwarders to plan their bookings with airlines with either regular shipment or irregular demand of cargos during peak season.The proposed models take into account constraints related to weight and volume limits of containers and also on constraints related to available containers.The computational results show that the proposed models can be used for practical air cargo planning.A two-phase method is also proposed in order to generate solutions for large instance data sets.The obtained results from the paper also suggest new research directions in this field. | Chhavy Chan Narameth Nananukul | 2022 | Journal of Traffic and Transportation Engineering2022，10，2： | 0 |
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