167 research outputs found

    The use of classroom demonstrations to improve high school students\u27 ability to understand concepts in chemistry

    Get PDF
    This study was completed to determine if implementing demonstrations in specific chapters of a high school chemistry classroom would enhance students understanding of the topics the demonstrations represented. The study consisted of five sections of college preparatory high school chemistry. The sections were made up of both male and female students. The sections were randomly broken up into two groups. Each group acted as the experimental and control at different points in the study. Four chapters were used in the study. Each group represented the control group in two chapters and the experimental group in two chapters, flip flopping with each chapter tested. Both groups were given a pre-test at the start of the chapter to assess prior knowledge. The experimental group was provided with classroom demonstrations throughout the chapter along with a standard lecture on the topics tested in the pre-test. The control group was given a standard lecture but was not shown any demonstrations throughout the chapter. Both groups were given a post-test to evaluate understanding gained at the end of the chapter. No significant differences were observed between the control and experimental groups when comparing raw test scores. However, a consistent trend was observed suggesting that the demonstrations presented to the experimental group did have a positive effect on student understanding with those students obtaining higher learning gains than those without the demonstrations. In comparison of normalized learning gains between the control and experimental groups, a trend of increased normalized learning gain for the experimental groups was observed including statistical significance in two of the chapters tested. The data collected was also broken down by gender with-in each chapter. No statistical significance was found in the raw scores or normalized learning gain based on gender

    The Locus Ceruleus in PTSD

    Get PDF
    NO ABSTRACT: This is 750 word encyclopedia entr

    State Loop 195 between Farm to Market 755 and US 83, Starr County, Texas

    Get PDF
    Over the course of two field sessions in May 2016 and in May 2018, SWCA Environmental Consultants (SWCA) conducted an intensive cultural resources survey along the proposed State Loop (SL) 195 from Farm-to-Market (FM) 755 to 1.4 miles west of the intersection of U.S. Highway (US) 83 and Loma Blanca Road in Starr County, Texas. This work augmented previous investigations by Cox-McClain and Hicks and Company. This management summary addresses the cumulative work completed, resources identified, eligibility recommendations, and what remains to be completed. SWCA’s work was conducted in compliance with Section 106 of the National Historic Preservation Act (54 US Code 306108) and the Antiquities Code of Texas (9 Natural Resources Code 191). Christopher Ringstaff served as Principal Investigator under Texas Antiquities Permit No. 7655. TxDOT proposes construction of a new-location roadway from Farm-to-Market (FM) 755 to 1.4 miles west of the U.S. Highway (US) 83 and Loma Blanca Road intersection in Starr County, Texas. The new-location roadway, SL 195 (formerly US 83 Reliever Route), would be a four-lane divided rural highway located within a typical 350-footwide right-of-way (ROW). The Project is divided and undertaken under three separate CSJs: 3632-01-001, 3632-01-002, and 3632-01-003. The Project’s area of potential effects (APE) is defined as one 350-foot-wide, contiguous ROW (with occasional variance of up to 500 feet wide) extending for 17.4 miles, that consists of an existing ROW and a new ROW. According to typical design sections, the depth of impacts is estimated to be up to 40 feet below the current ground surface for the bridge supports and up to 6 feet in depth for the rest of the project. The entire SL 195 project covers a total area of approximately 824.5 acres. Previous cultural resources investigations by Cox-McClain (2014) and Hicks and Company (2006) evaluated 458.9 acres of the overall project area. SWCA has conducted cultural resources investigations in 2016 and 2018 encompassing 276.4 acres of the overall project area. Cumulatively, 735.3 acres (89 percent) of the SL 195 project alignment has been evaluated while the remaining, non-access, parcels account for 89.2 acres (11 percent) of the total project. The cumulative efforts of these cultural resources investigations recorded 23 archeological sites (41SR234, 41SR242, 41SR243, 41SR342, 41SR376–379, 41SR381, 41SR383–386, 41SR389, 41SR417-419, 41SR425, and 41SR458–462) within the APE (Table 1). These sites are predominantly prehistoric (n=19; 83 percent) campsites or lithic scatters, but four sites (17 percent) are multi-component containing prehistoric and historic earlymiddle twentieth century assemblages. Twenty sites (41SR234, 41SR243, 41SR342, 41SR376–379, 41SR381, 41SR383, 41SR384, 41SR385, 41SR386, 41SR389, 41SR417–41SR419, 41SR425, 41SR458, 41SR460, and 41SR461) are recommended as not eligible for NRHP or SAL designation. Of the remaining three sites, 41SR242 and 41SR459 have undetermined eligibility and warrant avoidance or further investigation while 41SR462 is considered eligible for listing to the NRHP as detailed below. Site 41SR242 is a multi-component site consisting of a Late Archaic camp site with a dense scatter of burned rock and lithic debris and a historic component of unknown age. Based on the initial survey which included SWCA\u27s intensive shovel testing and TxDOTs backhoe trenching, the discovery of a high density debitage feature in apparent intact sediments supported additional work was warranted to determine NRHP and SAL eligibility. Site 41SR242 was tested in February and March 2017 with the results of the investigations forthcoming to the SHPO once the analysis is completed. Site 41SR459 is a prehistoric campsite with surficial and buried deposits consisting of a hearth field (i.e., multiple hearths) and lithic scatter. Due to the buried deposits and abundant earth oven features suggesting an overall high research value. As such, avoidance or additional work (i.e., test excavations) to determine the eligibility for designation as an SAL or for inclusion in the NRHP. Site 41SR462 is a buried multi-component site on Los Olmos Creek containing a dense prehistoric artifact assemblage dating to the Middle Archaic. The site has intact buried, possibly stratified deposits, with an assortment of cultural materials suggesting varied cultural activities suggesting an overall high research value and is considered eligible for listing to the NRHP and as an SAL based on the rarity of the site type, integrity, geomorphic setting, and overall lack of historic land-use modification which is almost unprecedented in the region In summary, 753.4 acres (89 percent) of the overall 17.4-mile long SL195 project encompassing 822.5 acres has been investigated for cultural resources. No access was available for the remaining 89.2 acres (11 percent) of the project area. These remaining areas are recommended for cultural resources investigations. Of the 23 archeological sites encountered during the cultural resources surveys of the project APE, nineteen sites are recommended as not eligible for both the NRHP and SAL designations; no further work is recommended on these sites. Based on the initial survey, site 41SR242 was tested in February and March 2017 with the results of the investigations forthcoming to the SHPO once the analysis is completed. Based on the results of the addendum survey, sites 41SR459 and 41SR462 are recommended as having undetermined NRHP and SAL eligibility; SWCA recommends further investigations to determine eligibility or avoidance. TxDOT concurs but has determined site 41SR462 to eligible for listing to the NRHP and as an SAL based on the rarity of the site type, integrity, geomorphic setting. As reported, the majority of the survey was conducted by SWCA on behalf of TxDOT with supplimental investigations by TxDOT. TxDOT believes the survey represents a reasonable and good faith effort to locate and identify historic properties as per 36 Code of Federal Regulations (CFR) Part 800.4(b)(1), and cultural resources as per Subchapter A of Chapter 26 of the Texas Administrative Code, throughout the proposed project APE

    Imagination Enviro-Station: Students Connecting Students to Ecological Sustainability

    Get PDF
    The development of an environmental identity is viewed by many as essential if we are to reorganize our societies toward ecological sustainability (Bell 2009; Clayton and Opotow 2003; Thomashow 2002). That, along with an eye toward environmental justice, was the major impetus for our graduate seminar in applied environmental sociology to partner with an elementary school in our small city of Hammond, LA, during the spring semester of 2010. After conducting focus groups with a group of fourth to sixth grade students and holding decision-making discussions with them for this community-based research (CBR) project, we went about two projects – planting native, “water loving” trees and installing rain barrels to mitigate flooding on their playground. A major goal of the project and purpose of CBR is to democratize the knowledge-making process (Strand et al. 2003). Thus, we sought to assist the students in gaining valuable skills. Specifically, students learned how to sustainably remedy their school’s drainage problem, enhance their outdoor space, encourage more communal interaction, and develop more of an ecological identity (Thomashow 2002). We also hoped to plant the seeds of future career possibilities that would benefit their communities. This paper traces the development and learning outcomes of this CBR project focused on environmental identity

    Improving Admission Medication Reconciliation Completion at GW Hospital

    Get PDF
    Background: Medication errors represent a major cause of adverse events in hospitalized inpatients. 27-83% of hospitalized patients will have at least one discrepancy in their medication history at admission, with 11%–59% of errors having clinical importance. Current processes for completing admission medication reconciliations are ill-defined, further increasing the risk of errors. Implementation of a standardized medication reconciliation process has led to a reduction in medication errors. Aim Statement: To increase the number of admission medication reconciliations completed within 48 hours of admission to GW Hospital by 25% over three months. Methods: From September 2017 until December 2017, an educational intervention was delivered to internal medicine residents rotating on the wards at GW Hospital and refined over three PDSA cycles. The intervention included an educational presentation on proper completion of an admission medication reconciliation, given at resident noon conference and to the night float team, a video by hospitalists reinforcing principles of proper medication reconciliation, and creation of a signoff checklist to assess interns for proper completion of medication reconciliations. The number of properly completed admission medication reconciliations within 48 hours of admission for patients admitted to one general medicine day team and to the night float team was assessed. Completion was denoted by green checkmarks next to “Document Medications by History” and “Medication Admission Reconciliation” in Cerner. Data was collected for all new admissions every post-call day and was expanded to an additional daytime team with PDSA Cycle 3. Results: Baseline data revealed that admission medication reconciliations were completed on 20% and 77% of new admissions to the daytime and night float teams, respectively. Completion rates by the day team varied from 16% to 100%, but with a clear trend towards improvement with over 50% completed on the days reviewed. Little change was observed on the night admission team. Expanded data from the additional daytime team showed improved completion rate. Discussion: Our study demonstrated that early provider education, adherence to a standardized process, and reinforced education are ways of improving admission medication reconciliation completion. There was an overall increase in admission medication reconciliation completion in the daytime medicine team, but not in the night float team, likely owing to the more frequent turnover of night float residents. Data collection was expanded to a second daytime medicine team and is ongoing with possible extension to all medicine wards teams. Limitations include provider turnover throughout our interventions, the inability to assess accuracy of completed medication reconciliations, and the varying experience with admission medication reconciliation completion among providers. Future interventions include education at intern orientation, reinforced with successful completion of a signoff checklist, and involvement of pharmacists

    Maximizing sampling efficiency to detect differences in fish community composition using environmental DNA metabarcoding in subarctic fjords

    Get PDF
    Environmental DNA (eDNA) has gained popularity as a tool for ecosystem biomonitoring and biodiversity assessment. Although much progress has been made regarding laboratory and fieldwork protocols, the issue of sampling efficiency requires further investigation, particularly in three-dimensional marine systems. This study focuses on fish community composition in marine ecosystems and aims to analyze the efficiency of sampling design given the sampling effort for distinguishing between different communities. We sampled three fjords in Northern Norway, taking samples along fjord transects and at three different depths, and amplified a fragment of the mitochondrial 12S rRNA gene of bony fishes using the MiFish primers. We evaluated the effect of (i) the number of sampling stations, (ii) samples' spatial distribution, and (iii) the data treatment approach (presence/absence versus semiquantitative) for maximizing the efficiency of eDNA metabarcoding sampling when inferring differences of fish community compositions between fjords. We found that the manner of data treatment strongly affected the minimum number of sampling stations required to detect differences among communities; because the semiquantitative approach retained some information about abundance of the underlying reads, it was the most efficient. Furthermore, we found little-to-no difference of fish communities in samples from intermediate depths when comparing vertical fish communities. Lastly, we found that the differences between fish communities at the surface were the highest across the horizontal distance and overall, samples ~30 km apart showed the highest variation in the horizontal distribution. Boosting sampling efficiency (reducing sampling effort without compromising ecological inferences) can significantly contribute to enhanced biodiversity management and efficient biomonitoring plans.publishedVersio

    The Grizzly, February 4, 2011

    Get PDF
    Hate Crime Discussed During Meeting • What is Love Course has Students Talking • Dolce Suono Ensemble Performs at Ursinus • Community Survey Results • UC-Rising Debuts • Presenting the Best and Worst of Ursinus College • Campus Activities Board Packs Semester with Great Fun • First African-American Graduate to be Honored • Internship Profile: Maria Linder • Winter Birthright Trip Proves to be Worthwhile • Recent Winter Weather is Anything But a Wanted Wonderland • Opinions: President Obama Attempts to Reach out to U.S. • UC Basketball Seniors Approaching End of Seasonhttps://digitalcommons.ursinus.edu/grizzlynews/1828/thumbnail.jp
    • …
    corecore