We measure the spin-density matrix elements (SDMEs) of the Delta(++)(1232) in the photoproduction reaction gamma p -> pi(-) Delta(++)(1232) with the GlueX experiment in Hall D at Jefferson Lab. The measurement uses a linearly-polarized photon beam with energies from 8.2 to 8.8GeV and the statistical precision of the SDMEs exceeds the previous measurement by three orders of magnitude for the momentum transfer squared region below 1.4GeV(2). The data are sensitive to the previously undetermined relative sign between couplings in existing Regge-exchange models. Linear combinations of the extracted SDMEs allow for a decomposition into natural and unnatural-exchange amplitudes. We find that the unnatural exchange plays an important role in the low momentum transfer region.

The spin-exotic hybrid meson π_{1}(1600) is predicted to have a large decay rate to the ωππ final state. Using 76.6  pb^{-1} of data collected with the GlueX detector, we measure the cross sections for the reactions γp→ωπ^{+}π^{-}p, γp→ωπ^{0}π^{0}p, and γp→ωπ^{-}π^{0}Δ^{++} in the range E_{γ}=8-10  GeV. Using isospin conservation, we set the first upper limits on the photoproduction cross sections of the π_{1}^{0}(1600) and π_{1}^{-}(1600). We combine these limits with lattice calculations of decay widths and find that photoproduction of η^{'}π is the most sensitive two-body system to search for the π_{1}(1600).

The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized 8.5 GeV photons impinging on a hydrogen target which is contained within a detector with near-complete coverage for charged and neutral particles. We present measurements of spin-density matrix elements for the photoproduction of the vector meson rho(770). The statistical precision achieved exceeds that of previous experiments for polarized photoproduction in this energy range by orders of magnitude. We confirm a high degree of s-channel helicity conservation at small squared four-momentum transfer t and are able to extract the t dependence of natural and unnatural-parity exchange contributions to the production process in detail. We confirm the dominance of natural-parity exchange over the full t range. We also find that helicity amplitudes in which the helicity of the incident photon and the photoproduced rho(770) differ by two units are negligible for -t < 0.5 GeV2/c(2).

We report the total and differential cross sections for J/& psi; photoproduction with the large acceptance GlueX spectrometer for photon beam energies from the threshold at 8.2 GeV up to 11.44 GeV and over the full kinematic range of momentum transfer squared, t. Such coverage facilitates the extrapolation of the differential cross sections to the forward (t = 0) point beyond the physical region. The forward cross section is used by many theoretical models and plays an important role in understanding J/& psi; photoproduction and its relation to the J/& psi;-proton interaction. These measurements of J/& psi; photoproduction near threshold are also crucial inputs to theoretical models that are used to study important aspects of the gluon structure of the proton, such as the gluon generalized parton distribution of the proton, the mass radius of the proton, and the trace anomaly contribution to the proton mass. We observe possible structures in the total cross section energy dependence and find evidence for contributions beyond gluon exchange in the differential cross section close to threshold, both of which are consistent with contributions from open-charm intermediate states.

Establishing that Vera C. Rubin Observatory is a flagship dark matter experiment is an essential pathway toward understanding the physical nature of dark matter. In the past two decades, wide-field astronomical surveys and terrestrial laboratories have jointly created a phase transition in the ecosystem of dark matter models and probes. Going forward, any robust understanding of dark matter requires astronomical observations, which still provide the only empirical evidence for dark matter to date. We have a unique opportunity right now to create a dark matter experiment with Rubin Observatory Legacy Survey of Space and Time (LSST). This experiment will be a coordinated effort to perform dark matter research, and provide a large collaborative team of scientists with the necessary organizational and funding supports. This approach leverages existing investments in Rubin. Studies of dark matter with Rubin LSST will also guide the design of, and confirm the results from, other dark matter experiments. Supporting a collaborative team to carry out a dark matter experiment with Rubin LSST is the key to achieving the dark matter science goals that have already been identified as high priority by the high-energy physics and astronomy communities.

S. Adhikari, C. S. Akondi, M. Albrecht, A. Ali, M. Amaryan, A. Asaturyan, A. Austregesilo, Z. Baldwin, F. Barbosa, J. Barlow, E. Barriga, R. Barsotti, T. D. Beattie, V. V. Berdnikov, T. Black, W. Boeglin, W. J. Briscoe, T. Britton, W. K. Brooks, E. Chudakov, S. Cole, P. L. Cole, O. Cortes, V. Crede, M. M. Dalton, T. Daniels, A. Deur, S. Dobbs, A. Dolgolenko, R. Dotel, M. Dugger, R. Dzhygadlo, H. Egiyan, T. Erbora, A. Ernst, P. Eugenio, C. Fanelli, S. Fegan, ∗ J. Fitches, A. M. Foda, S. Furletov, L. Gan, H. Gao, A. Gasparian, C. Gleason, 28 K. Goetzen, V. S. Goryachev, L. Guo, M. Hagen, H. Hakobyan, A. Hamdi, J. Hernandez, N. D. Hoffman, G. Hou, G. M. Huber, A. Hurley, D. G. Ireland, M. M. Ito, I. Jaegle, N. S. Jarvis, R. T. Jones, V. Kakoyan, G. Kalicy, M. Kamel, V. Khachatryan, M. Khatchatryan, C. Kourkoumelis, S. Kuleshov, A. LaDuke, I. Larin, 14 D. Lawrence, D. I. Lersch, H. Li, W. B. Li, B. Liu, K. Livingston, G. J. Lolos, K. Luckas, V. Lyubovitskij, D. Mack, A. Mahmood, H. Marukyan, V. Matveev, M. McCaughan, M. McCracken, 29 C. A. Meyer, R. Miskimen, R. E. Mitchell, K. Mizutani, V. Neelamana, F. Nerling, L. Ng, A. I. Ostrovidov, Z. Papandreou, C. Paudel, P. Pauli, † R. Pedroni, L. Pentchev, K. J. Peters, J. Reinhold, B. G. Ritchie, J. Ritman, 15 G. Rodriguez, D. Romanov, C. Romero, K. Saldana, C. Salgado, S. Schadmand, A. M. Schertz, A. Schick, A. Schmidt, R. A. Schumacher, J. Schwiening, P. Sharp, X. Shen, M. R. Shepherd, A. Smith, E. S. Smith, D. I. Sober, A. Somov, S. Somov, O. Soto, J. R. Stevens, I. I. Strakovsky, B. Sumner, K. Suresh, V. V. Tarasov, S. Taylor, A. Teymurazyan, A. Thiel, G. Vasileiadis, T. Viducic, T. Whitlatch, N. Wickramaarachchi, M. Williams, Y. Yang, J. Zarling, Z. Zhang, Z. Zhao, J. Zhou, X. Zhou, Q. Zhou, and B. Zihlmann

We report on the measurement of spin density matrix elements of the (cid:2) (1520) in the photoproduction reaction γ p → (cid:2) (1520) K + , via its subsequent decay to K − p . The measurement was performed as part of the GlueX experimental program in Hall D at Jefferson Laboratory using a linearly polarized photon beam with E γ = 8 . 2 GeV–8 . 8 GeV. These are the first such measurements in this photon energy range. Results are presented in bins of momentum transfer squared, − ( t − t 0 ). We compare the results with a Reggeon exchange model and determine that natural exchange amplitudes are dominant in (cid:2) (1520) photoproduction.

Imaging Cherenkov detectors form the backbone of particle identification (PID) at the future Electron Ion Collider (EIC). Currently all the designs for the first EIC detector proposal use a dual Ring Imaging CHerenkov (dRICH) detector in the hadron endcap, a Detector for Internally Reflected Cherenkov (DIRC) light in the barrel, and a modular RICH (mRICH) in the electron endcap. These detectors involve optical processes with many photons that need to be tracked through complex surfaces at the simulation level, while for reconstruction they rely on pattern recognition of ring images. This proceeding summarizes ongoing efforts and possible applications of AI for imaging Cherenkov detectors at EIC. In particular we will provide the example of the dRICH for the AI-assisted design and of the DIRC for simulation and particle identification from complex patterns and discuss possible advantages of using AI.

We present a search for axion-like particles, a , produced in photon-proton collisions at a center-of-mass energy of approximately 4 GeV, focusing on the scenario where the a -gluon coupling is dominant. The search uses a → γγ and a → π + π − π 0 decays, and a data sample corresponding to an integrated luminosity of 168 pb − 1 collected with the GlueX detector. The search for a → γγ decays is performed in the mass range of 180 < m a < 480 MeV, while the search for a → π + π − π 0 decays explores the 600 < m a < 720 MeV region. No evidence for a signal is found, and 90% confidence-level exclusion limits are placed on the a -gluon coupling strength. These constraints are the most stringent to date over much of the mass ranges considered.

The final fruit yield is significantly correlated to fruit set which is directly dependent upon self-incompatibility (SI), pollination ability, extent of cross-compatibility among cultivars, and prevailing environmental conditions especially suitable temperature regimes during anthesis.Four Italian cultivars viz.Coratina, Frantoio, Ottobratica, and Leccino under the agro-climatic conditions of Pothwar (Pakistan) were included in these studies during the years of 2017 & 2018.Each variety exhibited different values for the initial fruit set, final fruit set, number of shotberries and extent of selfincompatibility index.The SI resulted through reciprocal crosses depicted that cv.Coratina (0.80), cv.Frantoio (0.67) and cv.Leccino (0.73) possessed partial self-incompatibility while cv.Ottobratica (0.43) was found completely selfincompatible in studied environmental conditions.Cross-compatibility results based on fruit set percentage indicated that the cultivars can efficiently pollinize other cultivars and set good fruit yield, however, the cultivars pairs Coratina/Frantoio was at top and pair of Ottobratica/ Leccino was at the bottom.Thus, the selection and plantation of suitable pollinizers in olive orchards is a prerequisite through which deficiency in fruit setting and attaining commercial yield in olive orchards could be achieved.

In the era of Big Data, with the increasing use of large-scale data-driven applications, visualization of very large high-resolution images and extracting useful information (searching for specific targets or rare signal events) from these images can pose challenges to the current display wall technologies. At Bellarmine University, we have set up an Advanced Visualization and Computational Lab using a state-of-the-art next generation display wall technology, called Hiperwall (Highly Interactive Parallelized Display Wall). The 16 ft \(\times\) 4.5 ft Hiperwall visualization system has a total resolution of 16.5 Megapixels (MP) which consists of eight display-tiles that are arranged in a \(4\times 2\) tile configuration. Using Hiperwall, we can perform interactive visual data analytics of large images by conducting comparative views of multiple large images in Astronomy and multiple event displays in experimental High Energy Physics. Users can display a single large image across all the display-tiles, or view many different images simultaneously on multiple display-tiles. Hiperwall enables simultaneous visualization of multiple high resolution images and its contents on the entire display wall without loss of clarity and resolution. Hiperwall’s middleware also allows researchers in geographically diverse locations to collaborate on large scientific experiments. In this paper we will provide a description of a new generation of display wall setup at Bellarmine University that is based on the Hiperwall technology, which is a robust visualization system for Big Data research.

In the era of Big Data, with the increasing use of large-scale data-driven applications, the visualization of very large high-resolution images and extracting useful information (searching for specific targets or rare signal events) from these images can pose challenges to the current video-wall display technologies. At Bellarmine University, we have set up an Advanced Visualization and Computational Lab (AVCL) using a state-of-the-art next generation video-wall technology, called Hiperwall (Highly Interactive Parallelized Display Wall). The 16 feet wide by 4.5 feet high Hiperwall visualization system consists of eight display tiles that are arranged in a 4x2 tile format and has an effective resolution of 16.5 Megapixels. Using Hiperwall, we can perform interactive visual data analytics of large images by conducting comparative views of multiple large images in Astronomy and multiple data events in experimental High Energy Physics (HEP). Users can display a single large image across all the display tiles, or view many different images simultaneously on multiple display tiles. Hiperwall enables simultaneous visualization of multiple high resolution images and its contents on the entire display wall without loss of clarity. Hiperwall's middleware also allows researchers in geographically diverse locations to collaborate on large scientific experiments. In this paper we will provide a description of a new generation of display wall setup at Bellarmine University that is based on the Hiperwall technology, which is a robust visualization system for Big Data research.

Sit-to-stand (STS) movement is a complex functional task which requires coordination of movement, postural regulation and stability for successful execution. STS transfer consolidates the highly nonlinear musculoskeletal structure together with neural control and tactile system in human body. In this paper we propose a nonlinear control technique based on feedback linearization to emulate the control action of central nervous system in performing STS movement. We use 4-segments rigid body biomechanical model with 3 degrees-of-freedom built on average anatomical proportions. In this controlling scheme, we adopt the output feedback computing through physiologically relevant optimization based upon center of mass (COM) and ground reaction forces (GRF). Furthermore, the output feedback provides passive control action commands including a linear quadratic regulator (LQR) based function augmented with nonlinear function computed with feedback linearization. The reference trajectories generate active feed forward torques, in addition with passive torques to settle the motion profiles within human anatomical constraints. The simulation results show that feedback linearization in combination with LQR provides an optimal frame work for better results of biomechanical STS movement as compared to previous linear control design schemes.

Grasses, forbs and shrubs of alpine pastures harvested at three different intervals from four different altitudinal zones (2925-4184 m), Basel, Jalkhad, Gittidas and Burawai in upper Kaghan valley, Pakistan, were assessed for herbage production and nutritive value. Sample collection was accomplished by cutting above ground biomass at a 0.5m height. The results showed that herbage production was significantly (P<0.001) higher (333 kg/ha) for grasses and shrubs (192 kg/ha) in Burawai than Basel and Gittidas. The total herbage production was maximum in Burawai (1003 kg/ha) and was minimum in Basel and Gittidas. Herbage production of grasses and forbs was higher at 2nd harvest and was also significantly (P<0.01) affected by location x herb and harvest x herb interactions. The crude protein (CP) was higher in shrubs (14.8%) and forbs (13.6%) as compared to grasses (12.3%). The CP was the highest in herbages in Basel at 1st harvest. In vitro dry matter digestibility (IVDMD) of herbage was significantly higher (P<0.001) at Basel and Burawai followed by Gittidas and Jalkhad showing higher value for shrubs (67.1%) than forbs (56.2%) and grasses (54.2%) which was significantly affected (P<0.01) by location x herb interactions. Shrubs had more DM than grasses and forbs. Forbs showed higher ash contents at 1st harvest and lower at 3rd harvest as compared to grasses and shrubs. Grasses had greater NDF, ADF and hemicellulose contents than forbs and shrubs. Results demonstrated that variations in herbage production, CP and IVDMD and cell wall fractions of herbage were attributed to plant composition of the sward and harvest stage of the herbages.

Introduction Gastrointestinal (GI) bleeding is associated with a mortality of 10–30%. An NCEPOD report recently recommended that management of GI bleeds should be directed by a named GI bleed clinician, although wasn’t implicit that procedures be performed by a consultant.1 In SW London, 5 hospitals developed a network service to cover out-of-hours emergency endoscopy requirements for the region. It is a registrar-delivered, consultant-supported service. We present the key service outputs over a 10 month period in 2015. Methods OGDs were performed by registrars accredited with appropriate skills in upper endoscopy. Endoscopists prospectively collected data on all out-of-hours OGDs performed including age and sex of patient, Rockall score, time to OGD, primary endoscopic findings and therapeutic intervention. Data on mortality and re-bleed rates were retrospectively collected for the last 2 months of the study. Results 172 out-of-hours OGDs were performed between March and December 2015. 57% occured during the weekend, giving rise to a procedure rate of 1.12 OGD/weekend day and 0.33 OGD/week day. Mean age of patient was 59.5 years (range 16–94). 64% were male. Median Rockall score was 4. Mean time to OGD was 4hrs 15 mins (range 1 hr-16hrs). Table 1 shows the primary pathologies at OGD. Therapeutic intervention was needed in 52% of cases. Failure to achieve haemostasis endoscopically occured in 1.7%. Consultant assistance was required in 3 cases. Data from Nov to Dec 2015, which included 40 OGDs (mean age 59 years, 63% males, intervention rate 53%) indicated an inpatient re-bleed rate of 10% (NCEPOD audit rate 23%), an interventional radiology requirement in 6% (NCEPOD 8%) and a surgical intervention rate of 2.5% (NCEPOD 6%). All-cause 30 day mortality rate was 15%, although only one patient (2.5%) died as a direct result of uncontrolled bleeding.Abstract PWE-128 Table 1 Primary diagnosis Duodenal ulcer Gastric ulcer Variceal Non-variceal oesophageal pathology Foreign body Gastritis/duodenitis Cancer Other Normal % 23 18 17 10 3 5 2 11 11 Conclusion The results indicate that an effective and safe regional out-of-hours emergency GI bleed service can be provided via a registrar-delivered, consultant-supported model. This has important implications when considering the development of consultant on-call rosters, and maximising training opportunities for registrars. Reference 1 NCEPOD ‘Time to get control’ – a review of the care received by patients who had a severe gastrointestinal haemorrhage 2015. Disclosure of Interest None Declared