76,200 research outputs found

    Deep boundary current disintegration in Drake Passage

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    The fate of a deep boundary current that originates in the Southeast Pacific and flows southward along the continental slope of South America is elucidated. The current transports poorly ventilated water of low salinity (a type of Pacific Deep Water; PDW), into Drake Passage. East of Drake Passage, the boundary current breaks into fresh anticyclonic eddies, nine examples of which were observed in mooring data from December 2009 to March 2012. The observed eddies appear to originate mainly from a topographic separation point close to 60°W, have typical diameters of 20–60 km and accompanying Rossby numbers of 0.1–0.3. These features are likely to be responsible for transporting PDW meridionally across the ACC, explaining the near-homogenization of Circumpolar Deep Water properties downstream of Drake Passage. This mechanism of boundary current breakdown may constitute an important process in the Southern Ocean overturning circulation

    Letter From Reverend J. W. Drake to Eartha White

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    Correspondence: Letter Reverend J. W. Drake, Minister of St. John Baptist Church, Miami, Florida, to [Sister] E. M. White, Jacksonville, Florida, soliciting donations. Envelope with handwritten notes included. Date: April 18, 192

    Drake, D M J, 216829

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/382609Surname: DRAKE. Given Name(s) or Initials: D M J. Military Service Number or Last Known Location: 216829. Missing, Wounded and Prisoner of War Enquiry Card Index Number: SEA-3780.213878 Item: [2016.0049.14902] "Drake, D M J, 216829

    Death Certificate of Ruth Drake

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    Text document death certificate for Ruth Drake aged 23 cause of death " Miss Ruth Drake came to her death as a result of a premeditated Suicide caused by taking internally cyanide of potassium"Converted from .jpg to .pdf for compatibilit

    Drake Passage summary report: Cruises on RRS "James Clark Ross", 1993-2000. Drake Passage repeat hydrography: WOCE Southern Repeat Section 1b - Elephant Island to Burdwood Bank.

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    This report documents five early cruises in the Drake Passage annual repeat series conducted by Southampton Oceanography Centre in collaboration with the British Antarctic Survey. The series began under the auspices of the World Ocean Circulation Experiment as southern repeat section SR1b with a SeaSoar (towed undulating profiler) occupation in 1992. We document cruises from 1993 (JR0a), 1994 (JR0b), 1996 (JR16), 1997 (JR27) and 2000 (JR47). The cruises were all hydrographic CTD sections across Drake Passage between Burdwood Bank and Elephant Island, comprising 30 stations. One cruise (JR27) was occupied at higher resolution with 52 stations; also additional chemical measurements were made. On two cruises (JR16 and JR27), a lowered acoustic Doppler current profiler (ADCP) was introduced to provide full-depth water velocity profiles. Other measurements (vessel-mounted ADCP, sample salinity, navigation, expendable athythermographs, etc.) are described in context

    Characterizing and following eddies in Drake Passage

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    Drake Passage, the gap between South America and Antarctica, is a very energetic region, with strong currents and numerous eddies. These eddies are important for mixing waters across the main three fronts, and for affecting the biological productivity in the region. We use weekly maps of colour images, sea level anomaly and geostrophic velocities to characterize physical and biological activity in the region surrounding Drake Passage. In particular, we note that the largest eddy kinetic energy occurs to the east of the passage and is principally in the area bounded by the mean Subantarctic Front (SAF) and the mean Polar Front, whilst the biological productivity is highest in coastal regions, with the SAF acting as a clear southern boundary. In a number of cases, cyclonic eddies detected by altimetry also show a strong signature in ocean color. Regular XBT (eXpendable BathyThermograph) surveys provide information on sub-surface structure, confirming the altimetric identification of features and showing that they often contain water masses originating from the other side of the front

    An Analysis of an Interdisciplinary Experience in Art, Music, and Social Science with Fifth Grade Classes in Traditional School

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    71 leaves. Advisor: Dr. John M. HicksThe problem. Literature in various fields increasingly is stressing the importance of an interdisciplinary approach to education but such programs are not in evidence. This study is an analysis of an interdisciplinary experience in art, music and social science with fifth grade classes in a traditional school. Procedure. Three classes of fifth grade children at Barlow Granger Elementary School in Des Moines, Iowa were the population samples of this study. The author was the art teacher who initiated an interdisciplinary study with the music and social science teachers about Africa for student participation. An African program was given by the children for their parents at the end of the unit of study. A followup study was done the following year with two fifth grade classes, which composed a control group and an experimental group. The experimental group was tested and data was gathered. Findings. The results of the study showed that high motivation stimulates children and has far reaching effects. The interdisciplinary experience brought about behavioral changes that tended to be permanent in the students. Small group interaction promoted peer approval. Conclusions. Art does have a positive effect on the learning process of students through motivation and stimulation. It aids the human element, helps develop selfconfidence, promotes the feeling of success and provides access to positive behavioral changes. Innovative teaching methods can be implemented in traditional schools. It takes more teacher energy, cooperation, assistance and administrative backing. Recommendations. The writer recommends from this study that further research be done in man's thinking process with teaching methods designed to educate that process. Interdisciplinary teaching has substantial advantages and should be considered by more schools

    Influence of Incentive on Strategies of Human choice Behavior in a Four Alternative Transfer of Learning Probability Task

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    79 leaves. Advisor: Jerome M. FeldmanThe Problem: Forty-eight human Ss were presented with a four choice probability learning-task. Two groups of 24 Ss each were placed under different incentives - Equitable Wage (EW) and Gambling Wage (GW). It was anticipated that a transfer of learning effect would be present. Also, it was anticipated that the test in which the most frequently and least frequently presented alternatives were in opposite positions from that presented during pre-training would be the most difficult test presented. Procedure: All Ss were presented with 120 trials during pre-training and 60 trials in each of the four probability schemes during the test session. During one of the four tests, each alternative was the most frequently presented alternative. In each test, the four alternatives were presented in the following percentages: 56.25; 18.75; 18.75; and, 6.25. Findings and Conclusions: The GW group (greater incentive given) performed significantly more accurately than the EW group (lesser incentive given). Although both incentive groups approximated probability matching choice behavior, Ss in the GW group made more correct responses by distributing more responses to the most frequently presented alternative and fewer responses to the least frequently presented alternative than did the EW group. No support was present for a transfer of training effect nor the expected task difficulty

    2001 Leonard Medal Citation for Harry Y. McSween, Jr

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    Award of the Meteoritical Society-2001 M. J. Drake: 2001 Leonard Medal Citation for Harry Y. McSween, Jr

    Teacher Selection: Use of Demonstration Lessons

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    vi,84 leaves. Advisor: Annette M. Liggett.The problem: This study examined the use of a teacher demonstration lesson (TDL) as a component of one district's teacher selection process by determining if differences existed between evaluation ratings, as measured by the Summative Evaluation Report (SER), for teachers who were selected with the TDL and those who were selected without the TDL. Procedure: The evaluation ratings of 101 teachers hired in a Midwest district were analyzed. The SER was divided into four performance areas and a total composite score. A Chi square test was used to identify significant differences for each area and the composite score between the 53 teachers hired from 1980 to 1983 and the 48 teachers hired from 1985 to 1988. Findings: The research found no significant values for the four categories on the Summative Evaluation Report (SER) or for the composite score comparing the teachers selected using the TDL component and those selected without using the TDL. Therefore, the data failed to reject the null hypothesis. Conclusions: The research identified that evaluation ratings of tenured staff did not discriminate sufficiently to identify differences among staff. The results of the study did not indicate that better qualified teachers were identified through the use of a TDL within the selection process. A review of the literature indicated that the selection process continues to be based primarily upon subjective criteria rather than objective criteria and that teacher performance evaluation might be improved through the use of authentic assessment methods. Recommendations: Future studies regarding teacher selection procedures involving the TDL should investigate the evaluations for probationary teachers and the number who continue to be employed as tenured staff. In addition, a qualitative study regarding the perceptions of those involved in the selection process should be completed
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