917 research outputs found
Predicting High-Cap Tech Stock Polarity: A Combined Approach using Support Vector Machines and Bidirectional Encoders from Transformers
The abundance, accessibility, and scale of data have engendered an era where machine learning can quickly and accurately solve complex problems, identify complicated patterns, and uncover intricate trends. One research area where many have applied these techniques is the stock market. Yet, financial domains are influenced by many factors and are notoriously difficult to predict due to their volatile and multivariate behavior. However, the literature indicates that public sentiment data may exhibit significant predictive qualities and improve a model’s ability to predict intricate trends. In this study, momentum SVM classification accuracy was compared between datasets that did and did not contain sentiment analysis-related features. The results indicated that sentiment containing datasets were typically better predictors, with improved model accuracy. However, the results did not reflect the improvements shown by similar research and will require further research to determine the nature of the relationship between sentiment and higher model performance
Developing Preservice Teachers\u27 Perspectives on Reader Response
This study examines preservice teachers\u27 developing conceptions of reader response theory, specifically focusing on the importance of aesthetic response to students\u27 engagement with and motivation for reading. Three intact classes over three semesters (N = 78) participated in an intervention through literature discussion circles after reading award-winning and multicultural children\u27s and adolescent literature. They read a cycle of three novels in each class. Preservice teachers chose the books from multiple copies provided and responded in writing to each selection prior to meeting in small, student-run groups for discussion. Participants wrote dialectical journals for the first book, completed role sheets for the second selection, and for the third novel, provided a written response of their choice
Extraordinary Results In Ordinary Communities: Transforming Towns and Growing People
This Kettering Foundation Study reports on research conducted in a number of small rural communities struggling to deal with persistent problems that threaten their very existence. The report tells the stories of these places: Bakersville, North Carolina; Haven Acres (a neighborhood in Tupelo, Mississippi); Houston, Minnesota; and Colquitt, Georgia. And it tells the story of how citizens in these communities worked together -- one difficult step at a time -- to breathe new life into their struggling communities
Revitalizing Tier 2 Intervention with Graphic Novels
The authors explore the practice of incorporating graphic novels in a Tier 2 Response To Intervention (RTI) program for five elementary-aged struggling readers in an urban school. Using a formative experiment framework, the study found that graphic novels provided a vehicle for the application of word recognition and fluency strategies learned in the RTI intervention program. In addition, graphic novels were used to develop students’ vocabulary and comprehension skills and resulted in increased progress for students’ fluency as measured by DIBELS. Since graphic novels are not grade level specific, they are appropriate for readers across grades. As a genre, graphic novels can also provide a scaffold for students in the development of literacy skills
Dipolar and scalar He and Xe frequency shifts in mm-sized cells
We describe a He-Xe comagnetometer operating in stemless
anodically bonded cells with a 6 mm volume and a Xe spin coherence
time of 300 sec. We use a Rb pulse-train magnetometer with co-linear
pump and probe beams to study the nuclear spin frequency shifts caused by spin
polarization of He. By systematically varying the cell geometry in a
batch cell fabrication process we can separately measure the cell shape
dependent and independent frequency shifts. We find that a certain aspect ratio
of the cylindrical cell can cancel the effects of He magnetization that
limit the stability of vapor-cell comagnetometers. Using this control we also
observe for the first time a scalar He-Xe collisional frequency
shift characterized by an enhancement factor .Comment: 4 pages, 4 figure
Isolation and primary cultures of human intrahepatic bile ductular epithelium
A technique for the isolation of human intrahepatic bile ductular epithelium, and the establishment of primary cultures using a serum- and growth-factor-supplemented medium combined with a connective tissue substrata is described. Initial cell isolates and monolayer cultures display phenotypic characteristics of biliary epithelial cells (low molecular weight prekeratin positive; albumin, alphafetoprotein, and Factor VIII-related antigen negative). Ultrastructural features of the cultured cells show cell polarization with surface microvilli, numerous interepithelial junctional complexes and cytoplasmic intermediate prekeratin filaments. © 1988 Tissue Culture Association, Inc
Recommended from our members
Recent advances in remote handling at LAMPF
The Clinton P. Anderson Meson Physics Facility (LAMPF) has operated at beam currents above 200 microamperes since 1976. As a result, the main experimental beam line (Line A) has become increasingly radioactive over the years. Since 1976 the radiation levels have steadily increased from 100 mR/hr to levels that exceed 10,000 R/hr in the components near the pion production targets. During this time the LAMPF remote handling system, Monitor, has continued to operate successfully in the ever-increasing radiation levels, as well as with more complex remote-handling situations. This paper briefly describes the evolution of Monitor and specifically describes the complete rebuild of the A-6 target area, which is designated as the beam stop, but also includes isotope production capabilities and a primitive neutron irradiation facility. The new facility includes not only the beam stop and isotope production, but also facilities for proton irradiation and a ten-fold expansion in neutron irradiation facilities
Recommended from our members
Monitor 1983
The Monitor remote handling system was especially developed to perform in situ remote maintenance operations on Line A at the Clinton P. Anderson Meson Facility (LAMPF). Previous papers have traced the development of the system from prototype unit thru the more sophisticated Monitor I and Monitor II systems now in use. The Monitor I and Monitor II systems have served well in performing all necessary maintenance; however, future major improvements and expansion of experimental facilities call for development of a third system. Monitor III is a more portable system which will be able to support major disassembly and reconstruction of facilities remote from Line A. The system will include a large trailer mounted cask for safe transport of obsolete radioactive beam line components to the disposal site
- …