WorldWideScience
1

Automated assessment of programming assignments : visual feedback, assignment mobility, and assessment of students' testing skills  

OpenAIRE

The main objective of this thesis is to improve the automated assessment of programming assignments from the perspective of assessment tool developers. We have developed visual feedback on functionality of students' programs and explored methods to control the level of detail in visual feedback. We have found that visual feedback does not require major changes to existing assessment platforms. Most modern platforms are web based, creating an opportunity to describe visualizations in Java...

Ihantola, Petri

2011-01-01

2

Effects of Various Methods of Assigning and Evaluating Required Reading in One General Education Course  

Science.gov (United States)

Different approaches to creating out-of-class reading assignments for university general education courses might affect the amount of time students actually spend reading. Five instructors of a required religion/philosophy class used different approaches to assign out-of-class reading. Subsequently, their students (n = 504) were surveyed about…

Hilton, John L., III; Wilcox, Brad; Morrison, Timothy G.; Wiley, David A.

2010-01-01

3

OptAssign--A Web-Based Tool for Assigning Students to Groups  

Science.gov (United States)

A frequent task in educational settings is to assign students to groups based on stated preferences for some projects or topics. This paper introduces a web-based tool supporting both the work flow of collecting student data and the group formation. The latter is based on finding optimal solutions to suitable mathematical assignment problems,…

Meyer, David

2009-01-01

4

Assigning Wikipedia editing: Triangulation toward understanding university student engagement  

OpenAIRE

Professors across the United States participated in the first direct effort by the Wikimedia Foundation, the non-profit that supports Wikipedia, to engage the academic community and integrate Wikipedia into a class assignment. Three project participants, from different areas of study, conducted independent research into university student motivations for a Wikipedia assignment. We triangulate those data in this paper to describe how student motivations differ for a Wikipedia assignment from a...

Roth, Amy Wikimedia Foundation; Davis, Rochelle Georgetown University; Carver, Brian Uc Berkeley

2013-01-01

5

Student Perceptions of the Benefits of a Learner-Based Writing Assignment in Organic Chemistry  

Science.gov (United States)

A writing assignment to increase student understanding of and interest in practical applications of organic chemistry is described. Students were required to study a pharmaceutical or other organic compound and perform a qualitative risk assessment on the chemical. Student perceptions of the benefits of the paper were generally positive. (Contains…

Ablin, Lois

2008-01-01

6

Students' Evaluation of Writing Assignments in an Abnormal Psychology Course.  

Science.gov (United States)

Presents a study in which students in an abnormal psychology class rated the usefulness of drafts for two writing assignments. Reports that a research proposal was more effective than a case study in generating interest in psychology and opportunity for creativity. Concludes that writing assignments should reflect important aspects of a…

Procidano, Mary E.

1991-01-01

7

Open Ended Laboratory (OEL Assignment as Tool Imparting Generic Skills for Engineering Students  

Directory of Open Access Journals (Sweden)

Full Text Available Generic skills play a vital role in increasing the employability and marketability of a student. As for the Department of Chemical and Process Engineering, UKM, some of these skills are imparted in the assignment given to students called Open Ended Laboratory (OEL. In this OEL assignment, students are required to propose an experiment title based on the general topic given for that particular semester. The students, working in groups of 3 to 4 students, need to determine the objectives, apparatus and methods as well as execute the experiment. A report including results, discussion, conclusion and references is submitted for evaluation. The final presentation of students’ work is organised in a competition poster presentation format. Skills such as communication (oral and written, organisation, teamwork, innovation and creativity were evaluated for this assignment. We discovered that these skills can be nurtured by looking at the marks given by the judges and peer assessment matrices.

Noorhisham Tan Kofli

2012-12-01

8

Engaging Introductory Writing Students through Facebook Assignments  

Science.gov (United States)

Undergraduates' use of social networking sites has been well documented in both the popular press and in academic publications. Research suggests that students spend, on average, 30 minutes a day engaged in a predictable routine of social networking. Correspondingly, on the first author's previous campus, she had frequently observed many of the…

Lovell, Elyse D'nn; Palmer, Betsy

2013-01-01

9

Student's Lab Assignments in PDE Course with MAPLE.  

Science.gov (United States)

Computer-aided software has been used intensively in many mathematics courses, especially in computational subjects, to solve initial value and boundary value problems in Partial Differential Equations (PDE). Many software packages were used in student lab assignments such as FORTRAN, PASCAL, MATLAB, MATHEMATICA, and MAPLE in order to accelerate…

Ponidi, B. Alhadi

10

"Design Your Own Disease" Assignment: Teaching Students to Apply Metabolic Pathways  

Science.gov (United States)

One of the major focuses of biochemistry courses is metabolic pathways. Although certain aspects of this content may require a rote approach, more applied techniques make these subject areas more interesting. This article describes the use of an assignment, "Design Your Own Disease" to teach students metabolic regulation and biosignaling…

Flynn, Nick

2010-01-01

11

Combining Concept Maps with Quantitative Data and Writing Assignments to Foster Student Engagement  

Science.gov (United States)

Introductory geoscience is in a unique position to provide students with readily available data, problems that require careful analysis, and issues affecting their communities. Teaching introductory geoscience allows the instructors to package the developing of skills (quantitative numeracy, critical thinking, presenting) with the learning of new concepts. We have introduced in a large distribution course several assignments which combine concept maps with the analysis of quantitative data and short writing requirements. The aim of such assignments is to allow students to gain insight into scientific thinking, to challenge their pre-existing conceptions, and to achieve a deeper understanding of topics. It also provides us with the opportunity to experiment with novel assessment tools. In some cases, we have attempted to proof the effectiveness of such assessments. For example, a preliminary comparison of student performance on final exams indicates a correlation between marks gained on a concept map and those achieved on a short essay. This correlation implies that concept maps can be valid assessment tools. Other assignments, for example the creation of podcasts by small groups of students, provide for anecdotal evidence that students learn new concepts better because they need to reflect on them more carefully in order to present the assigned material.

Bank, C.; Eckert, T.

2008-12-01

12

The Impact of Anonymous and Assigned Use of Student Response Systems on Student Achievement  

Science.gov (United States)

This study examined the impact of two approaches to use of student response systems (SRSs) on achievement in a study designed to better understand effective use of the devices. One condition was anonymous use of SRSs, in which graduate students selected a random clicker when entering the classroom. The second condition assigned devices to students

Poole, Dawn

2012-01-01

13

Student Lead Discussions: Articles from the Literature and Final Writing Assignment  

Science.gov (United States)

Assignment #1 Student-led discussion of articles from the literature We assign one or two groups of two or three students to each of four or four or five topics related to climate change, and provide each group a set of related articles from the literature on their assigned topic. The group will lead a one-hour, in-class discussion on the topic, with up to a dozen students and one instructor in each discussion. In preparation for the discussion, the discussion co-leaders must collectively write a set of "Reading Questions" about each assigned article, which help readers focus on the key points made by the articles and can serve as points of discussion. The other students participating in the discussion must read the articles with the aid of these Reading Questions and annotate the portions of the articles that address the Reading Questions. We (instructors) evaluate the Reading Questions written by the co-leaders (they receive a shared grade for these), and we also check the annotated articles turned in by the other discussion participants to ensure that they prepared to participate in the discussion (they receive individual grades this). Discussion co-leaders each receive a grade for the quality of their discussion leadership. The purpose of this assignment is in part to help students prepare for their final writing assignment by requiring that they read a set of articles closely enough to help other students discuss and understand the key points, and get feedback about their level of understanding, up to a month before the final paper on the topic is due. The immediate outcome that we expect from this assignment is a demonstration that students can read the assigned articles critically, identify and articulate the key points, and help engage other students in a discussion about the articles, including conceptually important or difficult aspects of them. Assignment #2: Final writing assignment For this assignment, which follows from the previous one, students are asked to: locate two or more significant additional articles that relate closely to the articles on which they based the discussion that they co-led; and write a 8-12 page (typed, double spaced) overview of the history and current state of our scientific understanding about the topic(s) covered by the set of discussion articles, based on the articles themselves plus relevant material presented in class or in assigned reading. In particular, wherever justified by the source material, students should try to include the following in the narrative: initial observations/evidence; initial hypotheses posed to account for initial observations/evidence (including external forcings and feedbacks); subsequent observations/evidence that have confirmed or disproved earlier hypotheses; technology that made making observations/gathering evidence possible and led to breakthroughs in understanding; scientific controversies and how they played out historically or are currently playing out; current understanding and remaining uncertainties. The outcome should be a written demonstration of the student's ability to analyze and synthesize a set of articles from the literature and supporting materials provided in class to describe the history, current state, and unresolved aspects of our scientific understanding of an interdisciplinary aspect of climate change.

Dave Dempsey

14

Improving Geoscience Learning and Increasing Student Engagement Using Online Interactive Writing Assignments with Calibrated Peer Review.  

Science.gov (United States)

Peer review is a hallmark of the publication process for scientific research, yet it is rarely used as a pedagogical approach in university geoscience courses. Learning outcomes for university geoscience courses include content knowledge and critical thinking and analysis skills, and often include written communication of scientific issues or concepts. Because lecture and memorization is not the most effective learning approach for many students, instructors are increasingly exploring teaching approaches that involve active engagement. In this context, writing assignments that engage students in using content, constructing arguments, and critiquing other students' work are highly desirable. However, many of us struggle with extensive writing requirements in our courses because the workload associated with having the instructor provide detailed comments on writing is daunting, especially in large-enrollment courses, and organizing effective peer review by students is very challenging. Calibrated Peer Review (CPR) is a web-based program that involves students in writing and in reviewing each other's writing. It is designed to allow for more involved writing and feedback experiences with much less instructor time. Here we report on the results of a qualitative-methods analysis of narrative survey responses from students using CPR in an introductory geoscience class. In addition to an impact on the students' writing and their understanding of what goes in to effective writing, the results indicate that CPR acted as reinforcement for content learning, and an impetus for gaining a deeper understanding of content material. It allowed students to see how other students explained and analyzed content, and to check their understanding of a topic in relation to other students in the class. Not surprisingly, the instructor reported that students performed far better on exam questions that tested knowledge covered by CPR assignments.

Harbor, Jon

2014-05-01

15

45 CFR 2552.72 - Is a written volunteer assignment plan required for each volunteer?  

Science.gov (United States)

...2010-10-01 2010-10-01 false Is a written volunteer assignment plan required for each volunteer? 2552.72 Section 2552.72 Public...Assignments § 2552.72 Is a written volunteer assignment plan required for each...

2010-10-01

16

45 CFR 2551.72 - Is a written volunteer assignment plan required for each volunteer?  

Science.gov (United States)

...2010-10-01 2010-10-01 false Is a written volunteer assignment plan required for each volunteer? 2551.72 Section 2551.72 Public...Assignments § 2551.72 Is a written volunteer assignment plan required for each...

2010-10-01

17

Nutrition Students Improve Attitudes after a Guided Experiential Assignment with Older Adults  

Science.gov (United States)

Objective: Develop, implement, and evaluate an intervention (a guided experiential assignment) to improve nutrition students' attitudes toward working with older adults. Design: A quasi-experimental design with an additional qualitative component (mixed methods). Setting: A North Central land-grant university. Participants: 100 college students

Lee, Seung-Yeon; Hoerr, Sharon L.; Weatherspoon, Lorraine; Schiffman, Rachel F.

2008-01-01

18

Who Assigns the Most ICT Activities? Examining the Relationship between Teacher and Student Usage  

Science.gov (United States)

The expansion of information and communication technology (ICT) infrastructure in schools is expected to promote learning. To what extent teachers are utilizing the new ICT tools to engage students in learning activities remains a question. This study reports what kind of activities teachers are likely to assign students, and what type of teachers…

Hsu, Shihkuan

2011-01-01

19

Influence of Assigned Reading on Senior Medical Student Clinical Performance  

OpenAIRE

OBJECTIVE: This Institutional Review Board-approved, prospective, observational study compared the clinical performance of senior medical students in an emergency medicine (EM) clerkship using a clinical behavioral evaluation tool in which one group had mandatory, topic specific readings and the other did not.METHODS: The study took place in an urban, tertiary referral center emergency department treating 43,000 patients annually and supporting medical student clerkships and an EM residency. ...

Hoffman, Lance; Bott, Kristine; Puumala, Susan; Shostrom, Valerie

2009-01-01

20

Benefits of Required Counseling for Counseling Students  

Science.gov (United States)

Graduate students experience mental health distress. The authors investigated the benefits of required counseling services at a training clinic for students enrolled in counseling courses. Results indicated that after receiving services, students ("N" = 55) reported decreases in overall problems, depressive symptoms, and anxiety…

Prosek, Elizabeth A.; Holm, Jessica M.; Daly, Cynthia M.

2013-01-01

21

Adaptive System for Assigning Reliable Students’ Letter Grades—A Computer Code  

OpenAIRE

The availability of automated evaluation methodologies that may reliably be used for determining students’ scholastic performance through assigning letter grades are of utmost practical importance to educators, students, and do invariably have pivotal values to all stakeholders of the academic process. In particular, educators use letter grades as quantification metrics to monitor students’ intellectual progress within a framework of clearly specified learning objectives of a course. To s...

Alghamdi, Saeid A.

2010-01-01

22

Peer Assignment Review Process for Collaborative E-learning: Is the Student Learning Process Changing?  

Directory of Open Access Journals (Sweden)

Full Text Available In recent years collaborative e-learning has been emphasized as a learning method that has facilitated knowledge construction and supported student learning. However some universities especially in developing country contexts are struggling to attain minimal educational benefits from its adoption and use. This paper investigates the application of a peer assignment review process for collaborative e-learning to third year undergraduate students. The study was aimed at evaluating the effect of the peer assignment review process on the student learning process. Data was collected using a survey questionnaire and analyzed using SPSS Version 16.0. While the student reported positive impact of the peer assignment review process in terms of facilitating students to put more effort and improve their work; quick feedback on their assignments; effective sharing and development of knowledge and information and the need of computer competence to manipulate the peer assignment review system, analysis of the quantitative data indicated that the process had limited effect on the learning process. This is attributed to lack of review skills, absence of lecturer scaffolding, low ICT literacy levels and change management.

Evelyn Kigozi Kahiigi

2013-01-01

23

Adaptive System for Assigning Reliable Students’ Letter Grades—A Computer Code  

Directory of Open Access Journals (Sweden)

Full Text Available The availability of automated evaluation methodologies that may reliably be used for determining students’ scholastic performance through assigning letter grades are of utmost practical importance to educators, students, and do invariably have pivotal values to all stakeholders of the academic process. In particular, educators use letter grades as quantification metrics to monitor students’ intellectual progress within a framework of clearly specified learning objectives of a course. To students grades may be used as predictive measures and motivating drives for success in a study field. However due to numerous objective and subjective variables that may by be accounted for in a methodological process of assigning students’ grades, and since such a process is often tainted with personal philosophy and human psychology factors, it is essential that educators exercise extra care in maximizing positive account of all objective factors and minimizing negative ramifications of subjectively fuzzy factors. To this end, and in an attempt to make assigning students’ grades more reliable for assessing true-level of mastering specified learning outcomes, this paper will: i provide a literature review on previous works on the most common methods that have traditionally been in use for assigning students’ grades, and a short account of the virtues and/or vices of such methods, and ii present a user-friendly computer code that may be easily adapted for the purpose of assigning students’ grades. This would relieve educators from the overwhelming concerns associated with mechanistic aspects of determining educational metrics, and it would allow them to have more time and focus to obtain reliable assessments of true-level of students’ mastery of learning outcomes by accounting for all possible evaluation components.

Saeid A. Alghamdi

2010-10-01

24

Students, Please Turn to YouTube for Your Assignments  

Science.gov (United States)

Using the Flipped Classroom approach, the teacher "flips" the presentation of the material, the lesson, to non-class time by preparing a video that compresses the material and posting it on a website, such as YouTube, which the students can view at home or anywhere they choose. The teacher, in this case a Math teacher, is then free to use…

Johnson, Graham

2012-01-01

25

Assigning students to publish on the web: Examples, hurdles, and needs  

OpenAIRE

Assign students to create a website, video, or podcast, and they can become more engaged with content and more capable in communication, teamwork, critical thinking, and ethics. That is the promise. Still needed are documentation and dissemination of effective teaching approaches and suitable platforms to handle inevitable copyright issues. We characterise these needs here through a case study of one web publishing assignment in science that has run since 2003, brief descriptions of other new...

Davis, Lloyd; Leach, Joan; Longnecker, Nancy; Rifkin, William

2012-01-01

26

Using Cloud collaboration for writing assignments by students with disabilities: a case study using action research  

Directory of Open Access Journals (Sweden)

Full Text Available Though separated by geographical distance, a student with disabilities, his advisor, and his writing coach consorted in the Cloud using Google applications to achieve a writing goal. Our scenario demonstrates how emerging technologies can bridge transactional distance and “virtually” supplant face-to-face conferencing around a college writing assignment. Individual levels of technical acumen with digital technology evolved to bridge the psychological and communication space between the student and his instructors. As a result, the telecollaborators developed an efficient coaching process adaptable for all students who need assistance in revising college writing assignments at a distance. Action research frames our discussion of the Cloud collaboration and provides a scaffold for student autonomy. The advantages as well and disadvantages of Cloud collaboration are outlined with reference to the National Institute of Standards of Technology definition of Cloud Computing and the Seven Principles of Universal Course Design.http://dx.doi.org/10.5944/openpraxis.6.1.79

Kjrsten Keane

2014-02-01

27

Peer Assignment Review Process for Collaborative E-learning: Is the Student Learning Process Changing?  

OpenAIRE

In recent years collaborative e-learning has been emphasized as a learning method that has facilitated knowledge construction and supported student learning. However some universities especially in developing country contexts are struggling to attain minimal educational benefits from its adoption and use. This paper investigates the application of a peer assignment review process for collaborative e-learning to third year undergraduate students. The study was aimed at evaluating the effect of...

Evelyn Kigozi Kahiigi; Mikko Vesisenaho; Tusubira, F. F.; Henrik Hansson; Mats Danielson

2013-01-01

28

Development of Guidelines Related to Riverside Community College Nursing Student Mandatory Assignment to AIDS Patients in the Clinical Setting.  

Science.gov (United States)

The purpose of this study was to develop Associate Degree nursing program guidelines for Riverside Community College (RCC), in California, regarding mandatory nursing student assignment to Acquired Immune Deficiency Syndrome (AIDS) patients, and student refusal of such assignments in a clinical setting. During the 1990 fall semester, RCC's Nursing…

Kross, Carolyn Sue

29

Evolution of Various Library Instruction Strategies: Using Student Feedback to Create and Enhance Online Active Learning Assignments  

Directory of Open Access Journals (Sweden)

Full Text Available This case study traces the evolution of library assignments for biological science students from paper-based workbooks in a blended (hands-on workshop to blended learning workshops using online assignments to online active learning modules which are stand-alone without any face-to-face instruction. As the assignments evolved to adapt to online learning supporting materials in the form of PDFs (portable document format, screen captures and screencasting were embedded into the questions as teaching moments to replace face-to-face instruction. Many aspects of the evolution of the assignment were based on student feedback from evaluations, input from senior lab demonstrators and teaching assistants, and statistical analysis of the students’ performance on the assignment. Advantages and disadvantages of paper-based and online assignments are discussed. An important factor for successful online learning may be the ability to get assistance.

Marcie Lynne Jacklin

2013-06-01

30

When teacher-centered instructors are assigned to student-centered classrooms  

Science.gov (United States)

Technology-rich student-centered classrooms such as SCALE-UP and TEAL are designed to actively engage students. We examine what happens when the design of the classroom (conventional or teacher-centered versus student-centered classroom spaces) is consistent or inconsistent with the teacher's epistemic beliefs about learning and teaching (traditional or teacher-centered versus student-centered pedagogies). We compare two types of pedagogical approaches and two types of classroom settings through a quasiexperimental 2×2 factorial design. We collected data from 214 students registered in eight sections of an introductory calculus-based mechanics course given at a Canadian publicly funded two-year college. All students were given the Force Concept Inventory at the beginning and at the end of the 15-week-long course. We then focused on six teachers assigned to teach in the student-centered classroom spaces. We used qualitative observations and the Approaches to Teaching Inventory (ATI), a self-reported questionnaire, to determine the teachers' epistemic beliefs (teacher-centered or student-centered) and how these beliefs affected their use of the space and their students' conceptual learning. We report four main findings. First, the student-centered classroom spaces are most effective when used with student-centered pedagogies. Second, student-centered classrooms are ineffective when used with teacher-centered pedagogies and may have negative effects for students with low prior knowledge. Third, we find a strong correlation between six instructors' self-reported epistemic beliefs of student centeredness and their classes' average normalized gain (r =0.91; p =0.012). Last, we find that some instructors are more willing to adopt student-centered teaching practices after using student-centered classroom spaces. These data suggest that student-centered classrooms are effective only when instructors' epistemic framework of teaching and learning is consistent with a student-centered pedagogy. However, the use of the student-centered classrooms may change instructors' epistemic frameworks over time. Further research should focus on how to better support teachers with shifting epistemic frameworks as well as helping students with lower prior knowledge in student-centered classroom spaces.

Lasry, Nathaniel; Charles, Elizabeth; Whittaker, Chris

2014-06-01

31

Reference Desk Consultation Assignment: An Exploratory Study of Students' Perceptions of Reference Service  

OpenAIRE

This paper describes the experience of three sophomore English composition classes that were required to visit the reference desk for class credit. Student perceptions of reference consultations are analyzed to gain a clearer understanding of the students’ attitudes towards reference services. Findings of this exploratory study indicate that students still suffer from library anxiety and are much more likely to seek out reference help if they are convinced that a consultation will save the...

Martin, Pamela N.; Park, Lezlie

2010-01-01

32

A Simple Assignment that Enhances Students' Ability to Solve Organic Chemistry Synthesis Problems and Understand Mechanisms  

Science.gov (United States)

Organic chemistry students typically struggle with the retrosynthetic approach to solving synthesis problems because most textbooks present the chemistry grouped by "reactions of the functional group". In contrast, the retrosynthetic approach requires the student to envision "reactions that yield the functional group". A second challenge is the…

Teixeira, Jennifer; Holman, R. W.

2008-01-01

33

Web-Based Automatic Feedback on Assignments in Statistics :How Can it Help Students Learn Statistics and Universities Reduce Costs?  

OpenAIRE

A non-experimental study in 2005 suggested that immediate, automatic feedback on assignments helped to increase study motivation as well as pass rate among engineering students attending an introductory course in statistics at Oslo University College. In the follow-up study reported here we used an experimental design assigning the participants randomly to one of two experimental conditions: The ‘web-supported’ students received immediate, automatic feedback after having entered their res...

Kvadsheim, Reidar; Mehlen, Mari; Kittang, Harald Øyen

2010-01-01

34

Grid Computing Portlets Development Assignment  

Science.gov (United States)

Grid Computing Portlets Development Assignment - The purpose of this assignment is to show how to create and test a portlet using the Gridsphere Portal. In the process of doing that, the student will also learn how to install Gridsphere and other required packages.

Ferner, Clayton; Wilkinson, Barry

2011-06-30

35

Ability-Grouping and Academic Inequality: Evidence from Rule-Based Student Assignments. NBER Working Paper No. 14911  

Science.gov (United States)

In Trinidad and Tobago students are assigned to secondary schools after fifth grade based on achievement tests, leading to large differences in the school environments to which students of differing initial levels of achievement are exposed. Using both a regression discontinuity design and rule-based instrumental variables to address…

Jackson, C. Kirabo

2009-01-01

36

Single-Sex Schools, Student Achievement, and Course Selection: Evidence from Rule-Based Student Assignments in Trinidad and Tobago. NBER Working Paper No. 16817  

Science.gov (United States)

Existing studies on single-sex schooling suffer from biases due to student selection to schools and single-sex schools being better in unmeasured ways. In Trinidad and Tobago students are assigned to secondary schools based on an algorithm allowing one to address self-selection bias and cleanly estimate an upper-bound single-sex school effect. The…

Jackson, C. Kirabo

2011-01-01

37

Combining the Tasks of Grading Individual Assignments and Assessing Student Outcomes in Project-Based Courses  

Science.gov (United States)

ABET requires that engineering programs demonstrate continuous assessment and continuous improvement in order to be accredited. Central to the process is establishing and assessing measurable "student outcomes" that reflect whether the goals and objectives of the program are being met. This paper examines effective strategies for…

Dahm, Kevin

2014-01-01

38

Assigning Student Leaders: Decreasing Interruptions during Teacher-Led Small-Group Instruction  

Science.gov (United States)

The authors used a withdrawal design to evaluate an intervention designed to decrease interruptions during small-group instruction in a Kindergarten class. A new rule was put into place; during teacher-led small-group instruction, those not in the small group were required to address questions to designated student leaders, as opposed to…

Coles, Jeremy T.; Skinner, Christopher H.; Best, Tiffany L.; Wood, Allison; Luna, Elisa; Adcock, Wes

2013-01-01

39

Ideas for the Classroom: Freshmen Assigned to Recruit New Students; Class in Art History Meets Only in a Museum.  

Science.gov (United States)

Three innovative ideas for college instruction include a freshman assignment to write recruitment letters to high school students with similar interests, introductory art history classes taught solely in a museum adjacent to the campus, and use of the "Hunt of the Unicorn" tapestry to combine plant identification practice with art history. (MSE)

Hosley, Catherine J.

1987-01-01

40

The relationship between assigned peer mentors and the retention and GPA of female and male engineering students  

Science.gov (United States)

Compared to women's overall enrollment in higher education, the number of women engineering students was low. Additionally, women were less likely than men to retain an engineering major. No one specific reason accounted for the enrollment inequity. Generally, the causes were attributed to an accumulation of barriers women face, as well as the differences between women and men. One retention technique recommended and utilized to retain women engineering students was mentoring. Research confirmed that mentoring provided career and psychosocial benefits for women and men. Claims were made that efforts to retain women students also improved the education for men students. However, few studies examined the relationship between mentoring and the retention and success of women and men engineering students. Further, no study had examined if the benefit of a mentor could be extended to an assigned peer mentor relationship. The objective of this dissertation study was to examine if there was a significant relationship between assigned peer mentors and the retention and GPA of female and male engineering students. This study investigated engineering students at the University of Pittsburgh (Pitt) in Pittsburgh, Pennsylvania. GPA and retention information was gathered for students without a peer mentor and for students with a peer mentor. The results of the analysis showed no difference in retention or GPA for mentored and non-mentored male and female engineering students. Additionally, the study found no significant difference in the SAT scores of the men and women engineering students. There was a significant difference in the GPA of the women and men engineering students, with the women having higher GPA's at the end of the freshman year. Finally, in this study, there was not a significant difference in the retention of women and men engineering students. The data analysis in this study did not support the idea that women at the University of Pittsburgh were more likely to drop out of engineering.

Belknap, Kathy A.

41

42 CFR 433.145 - Assignment of rights to benefits-State plan requirements.  

Science.gov (United States)

...to the Medicaid agency his or her rights, or the rights of any other individual eligible...derived from, the father of the child born out of wedlock; and ...provide that the assignment of rights to benefits obtained from an...

2010-10-01

42

The Impact of Teacher Assigned but Not Graded Compared to Teacher Assigned and Graded Chemistry Homework on the Formative and Summative Chemistry Assessment Scores of 11th-Grade Students with Varying Chemistry Potential  

Science.gov (United States)

The study analyzed 2005 posttest data compared to 2008 posttest data to determine student end of school year academic achievement outcomes across three academic levels (above average, average, and below average chemistry potential) and two teacher homework evaluation methods (assigned but not graded and assigned and graded) on teacher prepared…

Wilson, Jennifer L.

2010-01-01

43

Use of a food frequency questionnaire to fulfill the research competency requirement for dietetics students.  

Science.gov (United States)

This article describes a research project developed by the Nutrition Division at Georgia State University (GSU). The project involved students' development of a food frequency questionnaire (FFQ) and satisfied the research competency requirements of the American Dietetic Association's accrediting body. Both Coordinated Program students and Dietetic Interns from a variety of research training backgrounds were trained as a single group on topics related to the research requirements and that would prepare them to develop and use a FFQ. Students completed a literature review on a nutrient or food group of interest and received training on human subject research, subject recruitment, and data analysis with statistical methods. They then developed, administered, and analyzed the results of a FFQ and compared it to a gold standard FFQ. GSU nutrition professors conducted pre- and post-session surveys to gauge whether students gained the research skills they need. Students' evaluation of the assignment strongly suggests that they felt more capable of calculating and interpreting results from survey data after completing the project. The present article provides a framework other nutrition educators can follow. Other allied health educators can consider designing similar research projects that: (a) are uniquely relevant to their professional competency requirements, (b) are feasible for students from a variety of research training backgrounds, and (c) allow students to practice using research tools and skills frequently used in their profession. PMID:22544410

Penumetcha, Meera; McCarroll, Catherine; Smith, Susan C

2012-01-01

44

Education policy and frame conflict : student assignment in the Wake County Public School System in North Carolina  

OpenAIRE

This research explores frame conflict in the context of education policy. It centers on the public discourse surrounding the retraction of a student assignment policy aimed at socio-economic diversity in the Wake County Public School System in North Carolina, USA. It argues that the controversy and community division resulting from this retraction represent a case of frame conflict. The community has been split into two distinct interpretive communities, each developing and using respective f...

Eyre, D. S.

2011-01-01

45

Why the Rhetoric of CS Programming Assignments Matters  

Science.gov (United States)

Despite the multiple potential benefits of asking students working on programming tasks to consider human factors, most programming assignments narrowly focus on technical details and requirements. Female students in particular may be attracted to assignments that emphasize human as well as technical factors. To assess how students respond to changes in the rhetorical presentation of programming instructions, 81 students completed questionnaires evaluating different assignment instructions. Students generally perceived assignments emphasizing real-world contexts and users as more motivating and enjoyable to program than those that did not emphasize human factors. Moreover, when asked what makes a "good" programming assignment, over half of the students volunteered that they looked for assignments stressing a real-world purpose, use or application.

Wolfe, Joanna

2004-06-01

46

Self-Regulated Assignment Attack Strategy: Evaluating the Effects of a Classroom-Level Intervention on Student Management of Curricular Activities in a Resource Context  

Science.gov (United States)

The purpose of this study was to evaluate the impact of a classroom-based strategy instruction package grounded in self-regulated learning. The Self-Regulated Assignment Attack Strategy (SAAS) targeted self-regulation of assignment management and related academic-behavioral variables for 6th grade students in resource support classrooms. SAAS was…

Ness, Bryan M.; Sohlberg, McKay Moore

2013-01-01

47

Does the Length of Assignment or the Nature of Grading Practices Influence the Amount of Homework Students Are Motivated to Produce.  

Science.gov (United States)

Reports on two studies conducted to determine whether the length of assignments or the nature of grading practices (relative or absolute) influenced the amount of homework teacher education students were motivated to complete. Revealed that the quantity of work produced was greater for short assignments than long ones. (DMM)

Tuckman, Bruce W.

1992-01-01

48

Learning the requirements for compassionate practice: student vulnerability and courage.  

Science.gov (United States)

Student nurses' professional development arises through socialisation in nursing knowledge, values and behaviours. Students are expected to demonstrate compassion; however, compassion is a complex concept, one that creates emotional challenges. A grounded theory study was undertaken to explore student nurse socialisation in compassionate practice. In-depth interviews were undertaken with 19 students in the north of England during 2009-2010, and their concerns and concern management emerged. Students expressed several concerns, one being their emotional vulnerability and uncertainty of the emotional requirements for compassionate practice. A core category of 'balancing future intentions' was identified: that students managed feelings of vulnerability and uncertainty through balancing their intentions towards and away from engagement in compassionate practice, depending upon perceived impact on their emotional well-being. The findings are discussed in relation to emotional labour and moral distress, and courage, resilience and self-compassion are explored as a means to enable sustainable compassionate practice. PMID:23515253

Curtis, Katherine

2014-03-01

49

BTEC Integrative Assignments.  

Science.gov (United States)

To equip electrical engineering students with common and transferable work skills, a program of integrative assignments was created to develop communication and teamwork skills. Discusses assignment components; the log book, a personal account of each assignment; assessment; conversion of "common skills" to competence statements, and performance…

Foot, G. E.

1992-01-01

50

Software Verification and Graph Similarity for Automated Evaluation of Students' Assignments  

OpenAIRE

In this paper we promote introducing software verification and control flow graph similarity measurement in automated evaluation of students' programs. We present a new grading framework that merges results obtained by combination of these two approaches with results obtained by automated testing, leading to improved quality and precision of automated grading. These two approaches are also useful in providing a comprehensible feedback that can help students to improve the qu...

Vujosevic-janicic, Milena; Nikolic, Mladen; Tosic, Dusan; Kuncak, Viktor

2012-01-01

51

Drafting and acting on feedback supports student learning when writing essay assignments  

Science.gov (United States)

A diverse student population is a relatively recent feature of the higher education system in the United Kingdom. Consequently, it may be thought that more "traditional" types of assessment based around essay writing skills for science undergraduates may be of decreasing value and relevance to contemporary students. This article describes a study in which the process of feedback on, and associated redrafting of, an essay was closely supervised to improve essay writing skills and subsequent exam performance. The results of this study show that students can significantly improve their learning and academic performance, as assessed by final examination mark, by a process that more closely mimics a "real-world" situation of review and redrafting. Additionally, the data show that students benefit from feedback only when this is used appropriately by the student. The article also discusses the continuing importance and relevance of essay writing skills so that writing, and acting upon feedback to do with that writing, remains an integral part of the process of learning.

Nicholas Freestone (Kingston University)

2009-06-01

52

Current clinical attire requirements for dental hygiene students.  

Science.gov (United States)

The American Dental Association and the Centers for Disease Control are currently stressing the need for protective clinical attire and barrier techniques to reduce cross-contamination and the spread of diseases. They strongly recommend disposable or clean, reusable gowns, lab coats, or uniforms during treatment of all dental patients. Surgical masks, gloves, and protective eyewear are also recommended. The program directors of 197 dental hygiene programs in the United States were surveyed to determine how these recommendations affect the current clinical attire requirements for dental hygiene students and clinical faculty. All of the programs responding to this survey required protective eyewear and gloves for both students and faculty. Seventy-seven percent of the programs responding required students to wear uniforms while working on clinical patients. Surgical gowns and surgical scrubs are currently worn by only eight percent and five percent of dental hygiene students respectively. Most clinical instructors wear lab coats over street clothes, instead of traditional uniforms. Many program directors indicated they are considering changes in clinical attire requirements in the future because of concern for infection control. The issues of most concern for possible changes in the near future appear to be (1) switching from uniforms to surgical gowns or scrubs, (2) changing to disposable gowns, and (3) utilizing a laundry service for lab coats or scrubs. PMID:2370584

Foley, E S

1990-02-01

53

Developing a Rubric to Assess Student Learning Outcomes Using a Class Assignment  

Science.gov (United States)

We developed a rubric to assess several of our department's undergraduate student learning outcomes (SLOs). Target SLOs include applications of principles of research methodology, using appropriate statistics, adherence to the Publication Manual of the American Psychological Association, and written communication skills. We randomly sampled 20…

Thaler, Nicholas; Kazemi, Ellie; Huscher, Crystal

2009-01-01

54

Assessing Business Communication Assignments of English-as-Second-Language Students.  

Science.gov (United States)

Describes a nationwide survey of business communication teachers, soliciting input on how English-as-a-second language students' written communication skills were assessed. Makes comparisons based upon teachers' gender, age, number of years of teaching experience, and geographic location where they teach. Indicates that business communication…

Lewis, Stephen D.; McGrew, Linda G.; Adams, C. Nathan

2002-01-01

55

Nursing Students' Perceptions of their Knowledge of Lesbian, Gay, Bisexual, and Transgender Issues: Effectiveness of a Multi-Purpose Assignment in a Public Health Nursing Class.  

Science.gov (United States)

Nurses work with diverse populations, but the nursing literature lacks research, theoretical frameworks, or practice guidelines regarding lesbian, gay, bisexual, and transgender (LGBT) health. Through diverse teaching strategies, students explored issues related to LGBT patients, families, and nurses using a cultural humility lens. Diverse teaching strategies included readings, a 2-hour presentation on LGBT health issues, and an assignment to conduct a scripted interview with two nurse key informants, based on the Health Care Equality Index (HEI). Students completed an online LGBT awareness preinterview survey, completed interviews, and completed a postinterview survey. Students showed a significant increase in knowledge about sexual orientation and gender identity and research and interview methods from pretest to posttest. The diverse teaching strategies involved in this assignment can enhance student knowledge, attitudes, and skills related to LGBT health care needs and increase appreciation of nursing research. [J Nurs Educ. 2015;54(1):50-53.]. PMID:25545145

Carabez, Rebecca; Pellegrini, Marion; Mankovitz, Andrea; Eliason, Michele J; Dariotis, Wei Ming

2015-01-01

56

Plagiarism Norms and Practices in Coursework Assignments  

Directory of Open Access Journals (Sweden)

Full Text Available The study compared the plagiarism norms and practices among pre-university, diploma anddegree students. The specific aspects examined were perceived necessity to include citationsin assignments, preferred penalties for plagiarism, and academic writing practices. Thequestionnaire responses of 263 students from three levels of university education wereanalysed. The results showed that the perceived necessity for attribution in assignments is thehighest for the degree students but the norm to require citations and to penalise omission ofcitations is not extensive at all three levels. A majority of the students felt that plagiarismshould be penalised but preferred warning from their lecturer, assignment resubmission andcounselling. Mosaic plagiarism is the most common whereby students combine texts from thesame source or different sources without proper citation and referencing. The most commonunethical help-seeking behaviour is copying another student’s work. The findings suggestthat while lack of knowledge on citation and referencing may lead to improper ornon-attribution of sources, plagiarism cannot be dealt with by instruction on citation andreferencing alone as respect for intellectual property can only be inculcated by treatingplagiarism as a serious academic misdemeanour.

Su-Hie Ting

2014-02-01

57

Information Literacy Skills: Teacher and Student Viewpoints. A review of: Herring, James E. “A Critical Investigation of Students’ and Teachers’ View of the Use of Information Literacy Skills in School Assignments.” School Library Media Research 9 (2006). 14 May 2007 .  

OpenAIRE

Objective – To examine student and teacher views of information literacy skills in school assignments in order to determine: 1) To what extent did students value the use of a research model booklet (PLUS)? 2) How confident were the students about doing a good assignment and did the PLUS booklet affect their confidence? 3)What benefits and limitations did students identify from individual brainstorming and concept mapping in relation to learning more about their topic and producing a ...

Julie Stephens

2007-01-01

58

Integrated Design of Basic Training, Practicum and End-of-Course Assignment Modules in the Teacher Training Degree: Perception of University Teachers, Students, and School Teachers  

Science.gov (United States)

Teacher training at the Blanquerna Faculty of Psychology and Educational and Sports Sciences (FPCEE), in Barcelona, has a long pedagogical tradition based on teaching innovation. Its educational style is characterised by methods focused on the students' involvement and on close collaboration with teaching practice centres. Within a core subject in the Teacher Training diploma course, students were asked to assess different methodological proposals aimed at promoting the development of their personal, social, and professional competences. In the assessment surveys, from a sample of 145 students, scores for variables very satisfactory or satisfactory ranged from 95.8 % to 83.4 % for the entire set of methodological actions under analysis. Data obtained in this first research phase were very useful to design basic training modules for the new Teacher Training Degree. In the second phase (in process), active teachers are asked for their perception on the orientation of the practicum, its connection with the end-of-course assignment, and the in-service student's incidence on innovation processes at school.

Torremorell, Maria Carme Boqué; de Nicolás, Montserrat Alguacil; Valls, Mercè Pañellas

59

14 CFR 61.87 - Solo requirements for student pilots.  

Science.gov (United States)

...operation, and aircraft systems; ...area; (13) High rates of descent...in a powered-lift. A student...operation, and aircraft systems; ...multiengine powered-lifts, simulated one-engine-inoperative...preparation, aircraft systems, and...without turns using high and low drag...

2010-01-01

60

Students' Awareness and Requirements of Mobile Learning Services in the Higher Education Environment  

OpenAIRE

Problem statement: M-learning is considered as the next generation of e-learning using mobile technologies. Students? awareness of such technology is one of the most focuses for success adoption. This study aims to investigate students? awareness and requirements of mobile learning services among Malaysian students in the higher education environment. Approach: The study found that the higher education environment now has the necessary mobile technology inf...

Alzaza, Naji S.; Yaakub, Abdul R.

2011-01-01

61

Maritime Aquarium, Norwalk CT - Field Trip Assignment  

Science.gov (United States)

Self-guided field trip assignment to Maritime Aquarium in Norwalk CT. Students evaluate the main processes occurring in Long Island Sound estuary. Environmental issues are also examined. Students evaluate the displays for educational value and scientific content

Klosko, Eryn

62

Class Schedule Assignment Based on Students Learning Rhythms Using A Genetic Algorithm / Asignación de horarios de clase basado en los ritmos de aprendizaje de los estudiantes usando un algoritmo genético  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: English Abstract in spanish El objetivo de esta propuesta es implementar un horario escolar que tenga en cuenta los ritmos de aprendizaje en los estudiantes de educación primaria y secundaria, utilizando un algoritmo genético. La metodología considera los requerimientos legales y las restricciones necesarias para la asignación [...] de maestros y aulas en instituciones educativas públicas de Colombia. Adicionalmente, se establecen un conjunto de restricciones relacionadas con el enfoque en los ritmos cognitivos, determinando las horas de la jornada en las que es más conveniente la ubicación de ciertas materias de acuerdo al área del conocimiento al que pertenecen. El algoritmo genético evoluciona mediante un proceso de mutación y selección, a través del cual se construye una solución completa a partir de la búsqueda de las mejores soluciones por grupo. Se presentan los resultados de las pruebas realizadas para la asignación de una institución con 16 grupos. La calidad de las soluciones obtenidas de acuerdo al enfoque establecido es validada mediante la comparación de los resultados obtenidos con las soluciones de otro algoritmo. Abstract in english The objective of this proposal is to implement a school day agenda focused on the learning rhythms of students of elementary and secondary schools using a genetic algorithm. The methodology of this proposal takes into account legal requirements and constraints on the assignment of teachers and class [...] rooms in public educational institutions in Colombia. In addition, this proposal provides a set of constraints focused on cognitive rhythms and subjects are scheduled at the most convenient times according to the area of knowledge. The genetic algorithm evolves through a process of mutation and selection and builds a total solution based on the best solutions for each group. Sixteen groups in a school are tested and the results of class schedule assignments are presented. The quality of the solution obtained through the established approach is validated by comparing the results to the solutions obtained using another algorithm.

Victor F, Suarez Chilma; Omar D, Castrillón Gomez; Álvaro, Guerrero Aguirre.

2013-06-01

63

Energy Requirements, Prediction of Body Fat and Weight Status Analysis of Nursing Students in Gaza Strip  

Directory of Open Access Journals (Sweden)

Full Text Available This study aimed to assess the total daily energy requirements (TDR, body mass index (BMI , body fat percentage (PBF, and weight status analysis according to body mass of nursing students in Gaza Strip. Study sample consisted of (93 subjects from college of nursing at Islamic university, Gaza, and (61 subjects from Palestine college of nursing, Khan Younus. Systematic random sample was used in this study to select the subjects from both colleges. Average basal metabolic rate (BMR and approx. total daily energy requirements (TDR for male students at Islamic university-Gaza (IUG were 1700 (SD 252 and 2040 Kcal/day respectively. For the female students BMR and TDR were 1506 (SD 213 Kcal/day and 1807 Kcal/day, respectively. Average body mass index (BMI of the male students at IUG was 23.85 (SD 4.06 Kg/m2, and for female students of the same college was 23.97 (SD 4.51 Kg/m2. Average body fat percentage (PBF of nursing male students at IUG was 17.21 (SD 4.82 and for females was 27.96 (SD 5.41. About sixty sex (66.1% percent of male nursing students at IUG had ideal weight whereas, 5.3% and 28.5 % were underweight and overweight respectively. For female students, 73% had normal weight and 27% had overweight. Average BMR and approx. TDR for the male students at Palestine college of nursing (PCN were 1635 (SD 226 and 1962 Kcal/day respectively. For the female students BMR and TDR were 1470 (SD 152 and 1765 Kcal/day respectively. Average BMI of the male students at PCN was 22.70 (SD 3.25 Kg/m2, and female students of the same college was 21.80 (SD 2.93 Kg/m2. Average PBF for males at PCN was 15.64 (SD 3.90 and for females was 26.30 (SD 3.88. About seventy two (72.2 % of male students at PCN had ideal weight whereas, 5.6% and 22.2 % were underweight and overweight respectively. For female students at the same college, 72 %, 4 %,and 24 % had ideal weight, underweight and overweight respectively.

Baker Mahmud Zabut

2005-01-01

64

The practical training of students - x-ray technicians and requirements to mentors in clinical bases  

International Nuclear Information System (INIS)

Full text: Introduction: Training of X-ray technicians in Bulgaria takes place in the Medical Colleges to Medical Universities. It's purpose is providing professional training of students in the area of diagnostic imaging, nuclear medicine and radiotherapy. Practical training is based on the scientific and theoretical knowledge and skills and is organized in pedagogic environment, adequate to regularities for a gradual formation of practical skills and habits. The practical training and pre-graduation internship are performed in 1895 from total of 3810 hours, which represents about fifty percent of all training of X-ray technicians. Students are in groups of 2-4 students. Practical training is organized, accomplished and monitored by the teacher training practice with the help of a mentor in the clinical base. Purpose: To present the tasks of practical training of students - X-ray technicians and the requirements for the personal characteristics and activity of mentors. Materials and methods: Documentary method has been used. Literature and normative documents related to the practical training of students in 'X-ray technician' of Medical Colleges have been studied. The job descriptions of senior clinical X-ray technicians have been examined carefully. Results: By analyzing literature sources, we have structured the tasks of practical training and pre-graduation internship of students - X-ray technicians, also we have described the requirements for personal qualities o the requirements for personal qualities of mentors and systematize the activities they perform. Conclusion: Practical training plays an important role in adaptation of young X-ray technicians to the conditions of medical work, improving their skills and habits, and to the development of specific practical skills for being able to respond to emergency conditions and to solve complicated practical situations. The mentor is the supervisor and the controller of interns who helps this happen through his own example, qualities and attitudes towards the profession and students

65

Personnel dose assignment practices  

International Nuclear Information System (INIS)

Implementation of DOE N 5480.6 Radiological Control Manual Article 511(3) requirements, to minimize the assignment of personnel dosimeters, should be done only under a broader context ensuring that capabilities are in place to monitor and record personnel exposure both for compliance and for potential litigation. As noted in NCRP Report No. 114, personnel dosimetry programs are conducted to meet four major objectives: radiation safety program control and evaluation; regulatory compliance; epidemiological research; and litigation. A change to Article 511(3) is proposed that would require that minimizing the assignment of personnel dosimeters take place only following full evaluation of overall capabilities (e.g., access control, area dosimetry, etc.) to meet the NCRP objectives

66

Data Mining Techniques for Identifying Students at Risk of Failing a Computer Proficiency Test Required for Graduation  

Science.gov (United States)

Enabling undergraduate students to develop basic computing skills is an important issue in higher education. As a result, some universities have developed computer proficiency tests, which aim to assess students' computer literacy. Generally, students are required to pass such tests in order to prove that they have a certain level of computer…

Tsai, Chih-Fong; Tsai, Ching-Tzu; Hung, Chia-Sheng; Hwang, Po-Sen

2011-01-01

67

¿QUÉ ESCRIBEN LOS ESTUDIANTES DE POSGRADO? TIPOS DE TEXTOS SOLICITADOS EN SEMINARIOS / WHAT DO GRADUATE STUDENTS WRITE? TYPES OF TEXTS ASSIGNED IN SEMINARS / O QUE OS ESTUDANTES DE PÓS-GRADUAÇÃO ESTÃO ESCREVENDO? GÊNEROS TEXTUAIS SOLICITADOS EM SEMINÁRIOS  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in portuguese O tema "gêneros textuais solicitados aos alunos em seus cursos universitários" tem sido objeto de várias pesquisas, mas poucas se centram no nível de pós-graduação. Neste trabalho, mediante uma enquete realizada a 118 participantes, indagamos o ponto de vista dos estudantes de mestrados e doutorados [...] em diversas disciplinas. Os resultados mostram que existem diferenças entre programas das faculdades de artes, humanas e ciências sociais; engenharia e tecnologia da informação, ciências naturais e matemática. À exceção do abstract ou do resumo, os textos frequentemente solicitados divergem daqueles que se escreverão uma vez finalizados os estudos. Além disso, ressalta-se a pouca frequência com que se pedem artigos para revistas científicas (principal tipo de escrito que se utiliza em todas as disciplinas). Estudos como o proposto aqui podem impulsionar futuras pesquisas sobre os programas de pós-graduação e sua articulação com o âmbito profissional ou acadêmico. Abstract in spanish El tema "tipos de textos solicitados a los alumnos en sus carreras universitarias" ha sido objeto de varias investigaciones, pero pocas se han centrado en el nivel de posgrado. En este trabajo, mediante una encuesta hecha a 118 participantes, indagamos el punto de vista de los estudiantes de maestrí [...] as y doctorados en diversas disciplinas. Los resultados muestran que existen diferencias entre programas de las facultades de artes, humanidades y ciencias sociales; ingeniería y tecnología de la información, y ciencias naturales y matemáticas. A excepción del abstract o resumen, los textos frecuentemente solicitados divergen de aquellos que se escribirán una vez finalizados los estudios. Resalta la poca frecuencia con que se piden artículos para revistas científicas (principal tipo de escrito que se utiliza en todas las disciplinas). Estudios como el aquí propuesto pueden impulsar futuras investigaciones sobre los programas de posgrado y su articulación con el ámbito profesional o académico. Abstract in english The issue of "types of texts assigned to university students" has been the object of several research projects; however, few of them focus on the graduate level. This particular project carried out an inquiry into the points of view of Master's and PhD students from diverse disciplines, through a su [...] rvey in which 118 students participated. Results show differences depending on whether the programs belong to the schools of arts, humanities, and social sciences; engineering and information technology; or natural sciences and mathematics. With the exception of abstracts, the texts usually required of the students are different form those they will write upon completion of their studies. Articles for scientific journals (the main type of text used in all disciplines) are rarely assigned. A study such as this one may foster future research on graduate programs and their connection to the professional or academic field.

Laura, Colombo; Jusmeidy, Zambrano.

2013-12-01

68

"Piggybacking" on Business Communication through Interdisciplinarity: Developing Student Communication Skills in Legal Environment of Business Courses  

Science.gov (United States)

The purpose of this article is to describe an assignment for a legal environment of business course that builds upon and reinforces strong business communication practices. The assignment discusses "piggybacking," which is the unauthorized use of another person's wireless Internet connection. In this assignment, the students are required (1) to…

Cooley, Amanda Harmon

2009-01-01

69

A focused assignment encouraging deep reading in undergraduate biochemistry.  

Science.gov (United States)

Encouraging undergraduate students to access, read, and analyze current primary literature can positively impact learning, especially in advanced courses. The incorporation of literature into coursework typically involves reading and responding to full research reports. Such exercises have clear value as students make connections between experiments and are able to probe and critique scientific logic. The exclusive use of full papers, though, may reinforce certain students' tendencies to rely on textual clues rather than a critical analysis of the actual data presented. I propose that structured activities requiring students to focus on individual parts of research papers, even on a single figure, are beneficial in a literature-centered advanced undergraduate course, because they promote the deep reading that is critical to scientific discourse. In addition, I describe how one such focused assignment boosted learning and was well received by students in a second-semester biochemistry course. PMID:24243802

Spiegelberg, Bryan D

2014-01-01

70

Learning through Writing: Teaching Critical Thinking Skills in Writing Assignments  

Science.gov (United States)

Traditional writing assignments often fall short in addressing problems in college students' writing as too often these assignments fail to help students develop critical thinking skills and comprehension of course content. This article reports the use of a two-part (staged) writing assignment with postscript as a strategy for improving critical…

Cavdar, Gamze; Doe, Sue

2012-01-01

71

Comparison of students classified as LD who petitioned for or fulfilled the college foreign language requirement.  

Science.gov (United States)

In this study, we compared the cognitive, academic achievement, and demographic profiles of 46 students from one university who had been classified as learning disabled (LD) and had received permission to substitute courses for the university's foreign language (FL) requirement (petition group) with the profiles of 21 students from the same university who had been classified as LD and had fulfilled the university's FL requirement by passing FL courses (nonpetition group). Results showed no significant differences between the two groups on measures of reading, mathematics, written language, American College Testing score, and graduating grade point average when IQ was used as a covariate. More petition than nonpetition students had at least a 1.0 SD discrepancy between IQ and achievement and had been referred only for FL learning problems. More nonpetition than petition students had taken an FL in college and received accommodations in the FL. The two groups together appeared to constitute a heterogeneous group of learners, with more than half failing to meet a minimum discrepancy criterion for classification as LD. The discussion addresses the classification system for LD, the process for determining the presence of FL learning problems and how to address them, and directions for further research. PMID:15510442

Sparks, R L; Philips, L; Ganschow, L; Javorsky, J

1999-01-01

72

One-shot or Embedded? Assessing Different Delivery Timing for Information Resources Relevant to Assignments  

Directory of Open Access Journals (Sweden)

Full Text Available Objective – This study aims to determine if the timing of library in-class presentations makes a difference in the type and quality of resources students use for each of four assignments in an introductory speech class. This comparison of content delivery timing contrasts a single, 50-minute lecture early in the semester with four approximately 12-minute lectures offered just before each assignment.Methods – First-year engineering students taking Fundamentals of Speech Communication provide the study group. Each speech assignment requires students to turn in an outline and list of references. The list of references for each student was given to the librarians, after the assignments were appropriately anonymized, for analysis of resource type, quality of resource, and completeness of citation. Researchers coded arandom sample of bibliographies from the assignments using a framework to identify resource type (book, periodical, Web, facts & figures, unknown and quality, based on intended audience and purpose (scholarly, entertainment, persuasion/bias, and compared them to each other to determine if a difference is evident. The authors coordinated what material would be presented to the students to minimize variation between the sections.Results – The study found a statistically significant difference between groups of students, demonstrating that the frequent, short library instruction sessions produce an increased use of high-quality content. Similarly, the sections with multiple library interactions show more use of periodicals than websites, while completeness of references is not significantly different across teaching methods.Conclusions – More frequent and timely interaction between students and library instruction increases the quality of sources used and the completeness of the citations written. While researchers found statistically significant differences, the use of a citation coding framework developed for specific engineering research and design tasks means the analysis done in this study is not as accurate as it might be with a framework designed for analyzing the resources required for researching and writing speech assignments.

Megan Sapp Nelson

2013-03-01

73

Evaluating Experiential Learning in Organizational Behavior: Taking Measure of Student Perception Regarding Group Experience  

OpenAIRE

Problem statement: The purpose of this study was to determine undergraduate student perceptions in the areas of group experience within the context of an undergraduate organizational behavior business class community service assignment. College students, as part of an in-class service-learning project, were assigned to teach business related curriculum to at-risk high school students. Approach: Students, enrolled in the required senior level business course, were then assessed i...

Roxanne Helm-Stevens; Orlando Griego

2009-01-01

74

Using the Same Problem with Different Techniques in Programming Assignments: An Empirical Study of Its Effectiveness  

Science.gov (United States)

This paper examines the effectiveness of a technique that first appeared as a Teaching Tip in the Journal of Information Systems Education. In this approach the same problem is used in every programming assignment within a course, but the students are required to use different programming techniques. This approach was used in an intermediate C++…

Newby, Michael; Nguyen, ThuyUyen H.

2010-01-01

75

Analytical Study of Self-Motivations among a Southwest Public University Nonpolitical Science Major Students in Required Political Science Courses  

Science.gov (United States)

All undergraduate students are required by state law to take six credited hours in political science. This study will help us identify if differences exist in self-determination among students enrolled in American Public Policy and American Government at a large, Southwestern public university. Because some types of motivation are associated with…

Gasim, Gamal; Stevens, Tara; Zebidi, Amira

2012-01-01

76

Promoting Professional Identity: A Within Group Comparison of Wiki-Based and Traditional Assignments on School Counselling Students' Learning, Sense of Community and Computer Anxiety  

Science.gov (United States)

The purpose of this study is to compare traditional and non-traditional instructional practices used in a counsellor education programme to determine their effect on pre-service school counsellors' learning and sense of community, thus leading to enhanced professional identity. Traditional and non-traditional assignments were examined: (a) a…

Rockinson-Szapkiw, Amanda J.; Pritchard, Tracey; McComb-Beverage, Shanna; Schellenberg, Rita

2013-01-01

77

NASN position statement: caseload assignments.  

Science.gov (United States)

It is the position of the National Association of School Nurses (NASN) that schools should employ professionally prepared Registered Nurses, to conduct and supervise school health programs which address the variety of health problems experienced by school children. NASN recommends a formula-based approach with minimum ratios of nurses-to-students depending on the needs of the student populations as follows: 1:750 for students in the general population, 1:225 in the student populations requiring daily professional school nursing services or interventions, 1:125 in student populations with complex health care needs, and 1:1 may be necessary for individual students who require daily and continuous professional nursing services. Other factors that should be considered in the formula-based approach are number of students on free or reduced lunch, number of students with a medical home, and average number of emergency services per year. PMID:21291082

Durant, Bonnie V; Gibbons, Linda J; Poole, Cynthia; Suessmanm, Mary; Wyckoff, Leah

2011-01-01

78

42 CFR 433.146 - Rights assigned; assignment method.  

Science.gov (United States)

... 4 2010-10-01 2010-10-01 false Rights assigned; assignment method. 433.146 Section...ADMINISTRATION Third Party Liability Assignment of Rights to Benefits § 433.146 Rights assigned; assignment method. (a)...

2010-10-01

79

Are New Generations of Female College-Student Populations Meeting Calcium Requirements: Comparison of American and Croatian Female Students  

OpenAIRE

We compared calcium (Ca) sources and intake, as well as multivitamin/mineral supplement use between female students with nutrition/health background and those from general-student-populations. 314 participants 18–37 y, including 57 African-Americans and 54 Caucasian-Americans recruited from Nutrition and/or other Health Sciences departments (NHS), and 100 African-American and 103 Croatian women representing general-student-population (GSP), completed food frequency questionnaire assessing t...

Douglas, Crystal C.; Ivana Rumbak; Irena Coli? Bari?; Marinela Kova?ina; Martina Piasek; Ilich, Jasminka Z.

2010-01-01

80

Assignment Book in Print Reading for Machine Shop.  

Science.gov (United States)

This student assignment book is designed for use in a course on print reading as applied to the machine shop course. Introductory materials include a student progress record, a list of references, and a pretest. For each of eight lessons, information sheets with one or more assignment sheets and a test are provided. The lessons cover the role of…

Texas A and M Univ., College Station. Vocational Instructional Services.

81

Using the Same Problem with Different Techniques in Programming Assignments  

Science.gov (United States)

Programming assignments are used to assess a student's understanding of the theoretical aspect of programming and their ability to put that theory into practice. When assigning programs for students to complete, it is necessary to make sure that the problem is well specified, realistic, yet is able to be completed in a relatively short period of…

Newby, Michael; Nguyen, ThuyUyen

2007-01-01

82

Consideration of criteria required for assignment of a (skin) sensitiser a substance of very high concern (SVHC) under the REACH regulation.  

Science.gov (United States)

The identification, characterisation, risk assessment and risk management of materials that cause allergic sensitisation is an important requirement for human health protection. It has been proposed that for some chemical and protein allergens, and in particular for those that cause sensitisation of the respiratory tract (associated with occupational asthma), it may be appropriate to regard them as Substances of Very High Concern (SVHC) under the provisions of REACH (Registration, Evaluation, Authorisation and restriction of CHemicals). We have argued previously that categorisation of sensitising agents as SVHC should be used only in exceptional circumstances. In the present article, the subject of SVHC is addressed from another perspective. Here the information that would be required to provide a compelling case for categorisation of a skin sensitising substance as a SVHC is considered. Three skin sensitising chemicals have been identified to serve as working examples. These are chromate, a potent contact allergen, and the skin sensitisers formaldehyde and isoeugenol. The key criterion influencing the decision regarding a skin sensitiser being categorised as SVHC is the extent to which impacts on the quality of life are reversible. Consequently, SVHC categorisation for skin sensitising chemicals should be used only in exceptional circumstances. PMID:24893346

Basketter, David; Kimber, Ian

2014-08-01

83

Career attitudes of first-year veterinary students before and after a required course on veterinary careers.  

Science.gov (United States)

Careers in Veterinary Medicine is a required, one-credit-hour course at the North Carolina State University College of Veterinary Medicine (NCSU-CVM), which meets once weekly during veterinary students' first semester. Lectures in this course are presented by one or more veterinarians representing diverse career areas. A voluntary, anonymous survey was distributed before the first class meeting in 2011 (PRE) and at the end of the semester (POST) to assess if students' career interests changed during the semester. The survey collected basic demographic data and students' preferences (on a Likert scale) for 17 veterinary career paths. Out of 63 students, 36 (57%) in the POST survey said that their career interests had changed during the semester, and 17 of the 26 students (65%) who gave a reason credited the careers course as one factor in reconsidering their career choice. Only 3 of the 17 career paths had statistically significant PRE/POST survey differences in Likert response frequency (equine practice, pathology, and wildlife medicine), but both informal discussions with students and responses to open-ended survey questions indicated that many students valued the introduction to unfamiliar veterinary career areas. Careers in Veterinary Medicine is a vital component of recent career-planning initiatives in the college, which will be especially important to veterinary students as they face continued changes in the profession, such as the increased debt load of the new graduate and the threat of veterinary workforce oversupply. PMID:24794169

Fish, Richard E; Griffith, Emily H

2014-01-01

84

Description and Students’ Perceptions of a Required Geriatric Clerkship in Post-Acute Rehabilitative Care  

OpenAIRE

This article describes medical students’ evaluation of a geriatric clerkship in post-acute rehabilitative care settings. This was a cross sectional study of fourth-year medical students who completed a mandatory 2-week rotation at a post-acute care facility. Students were provided with three instructional methods: 1) Web-based interactive learning modules; 2) Small group sessions with Geriatric faculty; and 3) Geriatric Interdisciplinary Care Summary (GICS), a grid that students used to for...

Bautista, Miho K.; Meuleman, John R.; Shorr, Ron I.; Beyth, Rebecca J.

2009-01-01

85

Linking neuroscientific research on decision making to the educational context of novice students assigned to a multiple-choice scientific task involving common misconceptions about electrical circuits  

OpenAIRE

Functional magnetic resonance imaging was used to identify the brain-based mechanisms of uncertainty and certainty associated with answers to multiple-choice questions involving common misconceptions about electric circuits. Twenty-two (22) scientifically novice participants (humanities and arts college students) were asked, in an fMRI study, whether or not they thought the light bulbs in images presenting electric circuits were lighted up correctly, and if they were certain or uncertain of t...

Patrice Potvin

2014-01-01

86

Are New Generations of Female College-Student Populations Meeting Calcium Requirements: Comparison of American and Croatian Female Students  

Directory of Open Access Journals (Sweden)

Full Text Available We compared calcium (Ca sources and intake, as well as multivitamin/mineral supplement use between female students with nutrition/health background and those from general-student-populations. 314 participants 18–37 y, including 57 African-Americans and 54 Caucasian-Americans recruited from Nutrition and/or other Health Sciences departments (NHS, and 100 African-American and 103 Croatian women representing general-student-population (GSP, completed food frequency questionnaire assessing their usual Ca intake and supplement use. NHS populations met recommendations and consumed significantly more Ca, particularly from dairy sources, and were more likely to take supplements than GSP groups, suggesting that health education may influence Ca intake.

Crystal C. Douglas

2010-05-01

87

Experiences from Cross-Institutional Exchanges of Undergraduate Business Student Written Cases  

Science.gov (United States)

This article describes an undergraduate course assignment that required 134 students in 52 student teams from three universities, two in the United States and one in the Czech Republic, to write, exchange, and give constructive feedback on a student-written strategic management or international business case and its accompanying teaching note. The…

Ross, Douglas N.; Zufan, Pavel; Rosenbloom, Al

2008-01-01

88

Students' Self-Assessment in Chemistry Examinations Requiring Higher- and Lower-Order Cognitive Skills  

Science.gov (United States)

The development of students' higher-order cognitive skills (HOCS) in the context of both chemistry and the complex interrelationships of science, technology, environment, and society is widely accepted as one of the most important goals of chemical education. Consequently, the translation of this goal into teaching, assessment, and learning strategies is a central issue in chemistry teaching. Students' self-assessment in chemistry examinations is a HOCS-promoting strategy. We evaluated the differences between students' self-assessment and their professors' assessment on midterm exams in introductory college courses in Israel and Greece, together with the students' appraisal of their capability for self- and peer-assessment. We found that (i) there were small (not significant) and large (significant) differences between students' self-grading and their professors' grading on LOCS and HOCS exam questions, respectively; (ii) students' estimates of their grades were higher than those of their professors, particularly for HOCS questions; and (iii) students believed that they were capable of self- and peer-assessment and were confident in making these assessments. Our results suggest that (i) students' self-assessment of LOCS-type exams can be successfully implemented immediately, whereas (ii) implementation of self-assessment for HOCS-type exam questions should be gradual, following appropriate preparation to close the gap between the future HOCS and contemporary dominant LOCS orientations in chemistry teaching and learning.

Zoller*, Uri; Fastow, Michal; Lubezky, Aviva; Tsaparlis, Georgios

1999-01-01

89

30 CFR 774.17 - Transfer, assignment, or sale of permit rights.  

Science.gov (United States)

...Transfer, assignment, or sale of permit rights. 774.17 Section 774.17 Mineral...TRANSFER, ASSIGNMENT, OR SALE OF PERMIT RIGHTS; POST-PERMIT ISSUANCE REQUIREMENTS...Transfer, assignment, or sale of permit rights. (a) General. No transfer,...

2010-07-01

90

Description and students' perceptions of a required geriatric clerkship in postacute rehabilitative care.  

Science.gov (United States)

This article describes medical students' evaluation of a geriatric clerkship in postacute rehabilitative care settings. This was a cross-sectional study of fourth-year medical students who completed a mandatory 2-week rotation at a postacute care facility. Students were provided with three instructional methods: Web-based interactive learning modules; small-group sessions with geriatric faculty; and Geriatric Interdisciplinary Care Summary (GICS), a grid that students used to formulate comprehensive interdisciplinary care plans for their own patients. After the rotation, students evaluated the overall clerkship, patient care activities, and usefulness of the three instructional methods using a 5-point Likert scale (1=poor to 5=excellent) and listed their area of future specialty. Of 156 students who completed the rotation, 117 (75%) completed the evaluation. Thirty (26%) chose specialties providing chronic disease management such as family, internal medicine, and psychiatry; 34 (29%) chose specialties providing primarily procedural services such as surgery, radiology, anesthesiology, pathology, and radiation oncology. Students rated the usefulness of the GICS as good to very good (mean+/-standard deviation 3.3+/-1.0). Similarly, they rated overall clerkship as good to excellent (3.8+/-1.0). Analysis of variance revealed no significant group difference in any of the responses from students with the overall clerkship (F(112, 4)=1.7, P=.20). Students rated the geriatric clerkship favorably and found the multimodal instruction to be useful. Even for students whose career choice was not primary care, geriatrics was a good model for interdisciplinary care training and could serve as a model for other disciplines. PMID:19682134

Bautista, Miho K; Meuleman, John R; Shorr, Ron I; Beyth, Rebecca J

2009-09-01

91

Mars - robust automatic backbone assignment of proteins  

International Nuclear Information System (INIS)

MARS a program for robust automatic backbone assignment of 13C/15N labeled proteins is presented. MARS does not require tight thresholds for establishing sequential connectivity or detailed adjustment of these thresholds and it can work with a wide variety of NMR experiments. Using only 13C?/13C? connectivity information, MARS allows automatic, error-free assignment of 96% of the 370-residue maltose-binding protein. MARS can successfully be used when data are missing for a substantial portion of residues or for proteins with very high chemical shift degeneracy such as partially or fully unfolded proteins. Other sources of information, such as residue specific information or known assignments from a homologues protein, can be included into the assignment process. MARS exports its result in SPARKY format. This allows visual validation and integration of automated and manual assignment

92

On Online Assignments in a Calculus Class  

Science.gov (United States)

In this paper, we describe our experience with the creation and utilization of online assignments for several calculus classes at Simon Fraser University (SFU). We present our findings regarding available software by considering the needs and perspectives of the instructors, students, and administrators. We provide a list of questions that guide…

Jungic, Veselin; Kent, Deborah; Menz, Petra

2012-01-01

93

Training medical students in community health: a novel required fourth-year clerkship at the University of Rochester.  

Science.gov (United States)

In 2004, community health became the fourth mission of the University of Rochester Medical Center, along with education, clinical care, and research. In that same year, a novel clerkship was added to the fourth-year curriculum that focuses on the "practice" of community health and preventive medicine. The goal is to offer intensive experiential training to develop skills in community health improvement by partnering with community agencies involved in health promotion and disease prevention. The learning objectives addressed include community health assessment, risk behavior change, assurance of personal health services, advocacy and policy change, environmental interventions, community organization and partnership building, and program evaluation. The clerkship involves three full days of didactic instruction at the beginning of a four-week period of program development and implementation. Each student chooses a project that focuses on a specific target population, then designs it and incorporates public health knowledge, skills, and attitudes learned during the didactic component. Course directors then mentor students during project implementation. Students can begin "longitudinal" experiences in their first or second years to fold into the required clerkship. Innovations include a novel Advocacy and Policy Change module, a highly rated Cultural Determinants of Health lecture, and a resource-based course Web site. The clerkship was initially offered as an elective, and it has since become a required course. In the clerkship to date, 340 students have launched hundreds of community-level interventions within various settings locally, nationally, and internationally. Evaluation efforts to date indicate that the clerkship has been received favorably by both faculty and students. PMID:18367896

McIntosh, Scott; Block, Robert C; Kapsak, Gabrielle; Pearson, Thomas A

2008-04-01

94

Algoritmo de Generación de Columnas: Una revisión desde su aplicación al problema de asignación de cupos escolares / Column Generation Algorithm: A revision from its application to the Student Assignation Proble  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish El algoritmo de generación de columnas (GC) se cita usualmente como alternativa para la solución de problemas de optimización de gran escala; este artículo aborda la presentación de dicho algoritmo en el contexto de la asignación de cupos escolares en el sistema de educación pública del distrito de [...] Bogotá. Se discuten algunas de las falencias evidenciadas en la puesta en práctica del algoritmo, presentando estrategias para enfrentarlas. Se ilustra además, la forma como la generación de columnas se acopla dentro del algoritmo Branch and Price para dar solución a problemas de mayor complejidad. Abstract in english The Column Generation Algorithm (CGA) is commonly cited in the bibliography as alternative to solve large scale optimization problems. This article deals with the description of the GC algorithm in the context of the student assignation to the public schools. kSome of the weaknesses and shortcomings [...] encountered in the implementation and application to a real problem are discussed and some strategies to sort it out are presented. This workpointed out how the CGA could be used within a general Branch and Price procedure to solve problems with additional constrains.

Pablo Andrés, Maya.

2008-12-01

95

The Maximization of Teacher Assignment: A Linear Programming Model  

Science.gov (United States)

This study attempted to maximize the effectiveness of the teaching force through a successful assignment of teachers by considering the individual needs, competencies, and preferences of teachers and administrative staff, and selected student and curriculum factors. (Author)

Berrie, Phillip J.

1974-01-01

96

Calibrated peer review assignments for the earth sciences  

Science.gov (United States)

Calibrated Peer Review ??? (CPR), a web-based instructional tool developed as part of the National Science Foundation reform initiatives in undergraduate science education, allows instructors to incorporate multiple writing assignments in large courses without overwhelming the instructor. This study reports successful implementation of CPR in a large, introductory geology course and student learning of geoscience content. For each CPR assignment in this study, students studied web-based and paper resources, wrote an essay, and reviewed seven essays (three from the instructor, three from peers, and their own) on the topic. Although many students expressed negative attitudes and concerns, particularly about the peer review process of this innovative instructional approach, they also recognized the learning potential of completing CPR assignments. Comparing instruction on earthquakes and plate boundaries using a CPR assignment vs. an instructional video lecture and homework essay with extensive instructor feedback, students mastered more content via CPR instruction.

Rudd, J.A., II; Wang, V.Z.; Cervato, C.; Ridky, R.W.

2009-01-01

97

25 CFR 36.96 - May students be required to assist with daily or weekly cleaning?  

Science.gov (United States)

...assist with daily or weekly cleaning? 36.96 Section 36...assist with daily or weekly cleaning? Yes, students can be...assist with daily or weekly cleaning. However, the ultimate...local law or rules regarding chemical use must be...

2010-04-01

98

An Empirical Examination of the Roles of Ability and Gender in Collaborative Homework Assignments  

Science.gov (United States)

The author investigates how ability and gender affect grades on homework projects performed by assigned pairs of students in an undergraduate macroeconomics course. The assignment grade is found to depend on the ability of both students, and the relative importance of the stronger and weaker student differs in predictable ways depending on the…

Parker, Jeffrey

2010-01-01

99

Case Assignment in Agrammatism.  

Science.gov (United States)

This study evaluated the omission patterns of case markers in the spontaneous speech of 12 Dutch and German adult speakers with agrammatic aphasia within the framework of Chomsky's case theory. Data supported the hypothesis that, if no case assigner is produced, the noun will receive nominative case by default or the case-marking morpheme will be…

Ruigendijk, Esther; van Zonneveld, Ron; Bastiaanse, Roelien

1999-01-01

100

The gene glvA of Bacillus subtilis 168 encodes a metal-requiring, NAD(H)-dependent 6-phospho-alpha-glucosidase. Assignment to family 4 of the glycosylhydrolase superfamily.  

Science.gov (United States)

The gene glvA (formerly glv-1) from Bacillus subtilis has been cloned and expressed in Escherichia coli. The purified protein GlvA (449 residues, Mr = 50,513) is a unique 6-phosphoryl-O-alpha-D-glucopyranosyl:phosphoglucohydrolase (6-phospho-alpha-glucosidase) that requires both NAD(H) and divalent metal (Mn2+, Fe2+, Co2+, or Ni2+) for activity. 6-Phospho-alpha-glucosidase (EC 3.2.1.122) from B. subtilis cross-reacts with polyclonal antibody to maltose 6-phosphate hydrolase from Fusobacterium mortiferum, and the two proteins exhibit amino acid sequence identity of 73%. Estimates for the Mr of GlvA determined by SDS-polyacrylamide gel electrophoresis (51,000) and electrospray-mass spectroscopy (50,510) were in excellent agreement with the molecular weight of 50,513 deduced from the amino acid sequence. The sequence of the first 37 residues from the N terminus determined by automated analysis agreed precisely with that predicted by translation of glvA. The chromogenic and fluorogenic substrates, p-nitrophenyl-alpha-D-glucopyranoside 6-phosphate and 4-methylumbelliferyl-alpha-D-glucopyranoside 6-phosphate were used for the discontinuous assay and in situ detection of enzyme activity, respectively. Site-directed mutagenesis shows that three acidic residues, Asp41, Glu111, and Glu359, are required for GlvA activity. Asp41 is located at the C terminus of a betaalphabeta fold that may constitute the dinucleotide binding domain of the protein. Glu111 and Glu359 may function as the catalytic acid (proton donor) and nucleophile (base), respectively, during hydrolysis of 6-phospho-alpha-glucoside substrates including maltose 6-phosphate and trehalose 6-phosphate. In metal-free buffer, GlvA exists as an inactive dimer, but in the presence of Mn2+ ion, these species associate to form the NAD(H)-dependent catalytically active tetramer. By comparative sequence alignment with its homologs, the novel 6-phospho-alpha-glucosidase from B. subtilis can be assigned to the nine-member family 4 of the glycosylhydrolase superfamily. PMID:9765262

Thompson, J; Pikis, A; Ruvinov, S B; Henrissat, B; Yamamoto, H; Sekiguchi, J

1998-10-16

101

Using Collaboration to Provide Students with an Internship Experience in an Information Systems Course  

Science.gov (United States)

This paper describes an instructional technique in an Information Systems course that provides students with actual work experience as part of an internship and/or apprenticeship assignment while completing additional course requirements. The course, Information Resource Management, provides students with a comprehensive overview of Information…

Wallace, Patricia

2007-01-01

102

Formal derivation of concurrent assignments from scheduled single assignments  

OpenAIRE

Concurrent assignments are commonly used to describe synchronous parallel computations. We show how a sequence of concurrent assignments can be formally derived from the schedule of an acyclic single assignment task graph and a memory allocation. In order to do this we develop a formal model of memory allocation in synchronous systems. We use weakest precondition semantics to show that the sequence of concurrent assignments computes the same values as the scheduled single...

Lisper, Bjo?rn

1991-01-01

103

Designing Effective Writing Assignments: What Do We Know?  

Science.gov (United States)

Reflecting the large role that writing assignments play in teaching and testing, a great quantity of research and published discussion exists which examines issues in designing writing topics for assessments. Because the immediate purpose of an assessment instrument is to measure students' writing proficiency, writing tasks that push students to…

Pytlik, Betty P.

104

Perspective on Grade Assignment at East Africa's State Universities.  

Science.gov (United States)

This paper discusses approaches to grading students that are being used or could be used in state universities in East Africa. Grade assignment usually means that some kind of comparison is being made, whether with other students or established standards or based on improvement and ability. For the most part, university regulations encourage and…

Takona, J. ole

105

Team Virtual Discussion Board: Toward Multipurpose Written Assignments  

Science.gov (United States)

In this paper, the authors provide a brief description of written (letter) assignments that use student pairs in a virtual Blackboard-based discussion board. The authors begin their discourse with the purposes for employing this teaching and learning method: (1) To allow students to function in a team structure; (2) To provide written knowledge…

Barker, Randolph T.; Stowers, Robert H.

2009-01-01

106

The Utility of Writing Assignments in Undergraduate Bioscience  

Science.gov (United States)

We tested the hypothesis that engagement in a few, brief writing assignments in a nonmajors science course can improve student ability to convey critical thought about science. A sample of three papers written by students (n = 30) was coded for presence and accuracy of elements related to scientific writing. Scores for different aspects of…

Libarkin, Julie; Ording, Gabriel

2012-01-01

107

Dynamic traffic assignment on parallel computers  

Energy Technology Data Exchange (ETDEWEB)

The authors describe part of the current framework of the TRANSIMS traffic research project at the Los Alamos National Laboratory. It includes parallel implementations of a route planner and a microscopic traffic simulation model. They present performance figures and results of an offline load-balancing scheme used in one of the iterative re-planning runs required for dynamic route assignment.

Nagel, K.; Frye, R.; Jakob, R.; Rickert, M.; Stretz, P.

1998-12-01

108

Making Economic Principles Personal: Student Journals and Reflection Papers  

Science.gov (United States)

The authors address two informal writing assignments implemented in introductory economics classes. One assignment involves students writing short reflection papers, and the other assignment involves students writing short journal entries for a designated period of time. Both assignments are designed to help students realize that economics is…

Brewer, Stephanie M.; Jozefowicz, James J.

2006-01-01

109

Automatic task assignment for mixed aircraft formations  

Science.gov (United States)

This paper discusses the problem of assigning tasks to a variety of differently-configured aircraft - aircraft of different types and carrying very different weapon loads. A multi-objective optimization algorithm is proposed which takes into account all of the relevant properties of the aircraft and the available weapons. Specifically, it includes limitations due to the aircraft's speed, time on station and the number of weapons available. The algorithm also allows for the need to define different priorities for different targets and requirements for co-operative laser designation for certain targets. The paper also discusses the need for supplementary algorithms to validate the optimal solution proposed by the assignment algorithm.

Ralph, Jason F.; Jones, Daniel M.

2009-05-01

110

The Utility of Writing Assignments in Undergraduate Bioscience  

OpenAIRE

We tested the hypothesis that engagement in a few, brief writing assignments in a nonmajors science course can improve student ability to convey critical thought about science. A sample of three papers written by students (n = 30) was coded for presence and accuracy of elements related to scientific writing. Scores for different aspects of scientific writing were significantly correlated, suggesting that students recognized relationships between components of scientific thought. We found that...

Libarkin, Julie; Ording, Gabriel

2012-01-01

111

Ways of Writing: Linguistic Analysis of Self-Assessment and Traditional Assignments  

Science.gov (United States)

Scholars of teaching and learning have endorsed self-assessment assignments as a way to encourage greater reflection by students. However, no studies to date have compared writing in self-assessment with traditional academic assignments. We performed a quantitative text analysis of students' language in self-assessment versus traditional…

Peden, Blaine F.; Carroll, David W.

2008-01-01

112

Assessing an Information Literacy Assignment and Workshop Using a Quasi-Experimental Design  

Science.gov (United States)

To determine the impact of an assignment and workshop intended to increase students' information literacy skills, we conducted a quasi-experiment using a pretest-posttest assessment with undergraduate students in four sections of an introduction to developmental psychology course. Two sections (N = 81) received the assignment and instructions…

Fitzpatrick, Maureen J.; Meulemans, Yvonne Nalani

2011-01-01

113

Strategies of College English Assignment Designing from the Perspective of MI Theory  

Directory of Open Access Journals (Sweden)

Full Text Available College English assignment should be oriented at consolidating and extending what students have learned in the class, realizing the role of promoting students’ English learning and even their all-round development. And a comprehensive achievement could be better reached if college English teachers employ the Multiple-intelligences Theory in the process of designing assignment, catering to aptitude and individuality.

Jinxiu Jing

2013-02-01

114

Designing Internet research assignments: building a framework for instructor collaboration  

OpenAIRE

Internet knowledge is increasing steadily among instructors in the academic world. As courses incorporate more instructional technology, traditional undergraduate research assignments are adapting to reflect the changing world of information and information access. New library assignments reflect this shift as well, with term papers and research projects asking students to use Web sites as an information resource, in addition to the standard literature of periodicals and monographs. But the m...

David Ward; Sarah Reisinger

2000-01-01

115

International communication via the Internet: Turkish nursing students' experiences.  

Science.gov (United States)

This study involves an assignment given to first-year students at the Ege University School of Nursing in Turkey as part of a computer course. The assignment required students to obtain nursing and healthcare information about a foreign country via the Internet. The objective was to heighten global awareness while improving computer skills. The study was designed to assess the effectiveness of this teaching method, and to showcase the experiences and cooperation involved in knowledge-sharing by students in university schools of nursing around the world. Thirty-one contacts were established and information was exchanged between nursing students at 20 different universities in five countries. Despite some difficulties, the students' positive response indicates that this study was effective in developing cultural and computer competency. PMID:16027536

Yavuz, Meryem

2005-01-01

116

A la Carte Grading: Providing Students Opportunities to Determine their Own Paths to Success  

Science.gov (United States)

This article describes the use of the mastery learning approach for two large enrollment introductory level courses. Students were required to complete a minimum number of assignments, and were then given the option to complete additional work that could be substituted for other completed assignments. In general, student perception of these grading systems was favorable; however, students did not seem to take full advantage of the available options because many did not choose to complete the additional assessments that could demonstrate further learning and be used to improve their course grade.

Thompson, James

117

Online Resource Aiding Students to Practice and Perfect Manufacturing Based Skills  

OpenAIRE

As part of our teaching in the Departments of Fabrication and Transport Engineering in the Dublin Institute of Technology we use industrial metal folding machines to help students to learn the sequencing of folds on manufactured sheet metal components. Many students have difficulty visualising the folding sequences required to complete practical manufacturing assignments. This paper details the digital media resource which was developed to provide students with the opportunity to offer a prop...

Morris, Robert Martin; Dunne, Frank; Collins, Maurice

2013-01-01

118

Using Student Learning and Development Outcomes to Evaluate a First-Year Undergraduate Group Video Project  

OpenAIRE

Students in an interdisciplinary undergraduate introductory course were required to complete a group video project focused on nutrition and healthy eating. A mixed-methods approach to data collection involved observing and rating video footage of group work sessions and individual and focus group interviews. These data were analyzed and used to evaluate the effectiveness of the assignment in light of two student learning outcomes and two student development outcomes at the University of Minne...

Jensen, Murray; Mattheis, Allison; Johnson, Brady

2012-01-01

119

Reflective practice: assessment of assignments in English for Specific Purposes  

Directory of Open Access Journals (Sweden)

Full Text Available The construct alternative assessment has been widely used in higher education. It is often defined as any type of assessment of learners who provide a response to an assignment. The key features of alternative assessment are active participation of learners in self-evaluation of their performance, and the development of reflective thinking through reflective thinking (Schön, 1983. The success of alternative assessment in language teaching is predetermined by student’s performance and demonstrates learner’s language proficiency in contemporary communicative classrooms. This paper aims at researching the influence of students’ evaluations of various assignments for their linguistic development in English for Specific Purposes (ESP. The study uses learners’ assessment of different assignments and learners’ in-course and post-course written reflections on benefits to language mastery. Learners’ assignments included were contributions to portfolios (dossiers, such as essays and summaries, oral presentations, short impromptu talks, creative tasks, tests, and self-assessment notes (reflections on activities in learning ESP. Findings were obtained for two streams of the project participants. Results showed that self-assessment was beneficial for learners’ linguistic development. The context of learners’ reflections reveals that the attitudes to various assignments are affected by success or failure in students’ performance. Reflective practice might help teachers develop ways of dealing with previously identified difficulties and improve the quality of teaching.

Galina Kavaliauskiené

2007-10-01

120

Collaborative Online Writing Assignments to Foster Active Learning  

Science.gov (United States)

To help students master the content of a neurophysiology course, they were asked to participate in collaborative writing projects. In the first two years, students contributed to a class wiki by summarizing one lecture and editing summaries of several others. In the second two years, students worked in teams of three or four to write a series of illustrated chapters spanning the entire semester. The second assignment kept students more engaged than the wiki project, and although they found it a significant amount of work, they also believed that it helped them learn the subject matter. Working in teams, however, was not always a happy experience. PMID:23493457

Olivo, Richard F.

2012-01-01

121

The Effect of Computer-Generated Instructional Feedback and Videotape on the Speaking Performance of College Students in a Basic Speech Course.  

Science.gov (United States)

The purpose of this study was to determine the effectiveness of a computer-generated feedback system when used in conjunction with an analysis of videotaped performances of students' speeches and model speeches. Subjects, 112 university students enrolled in 9 sections of a required undergraduate public speaking course, were randomly assigned to 1…

Russell, Bruce W.

122

Motivating Students  

Science.gov (United States)

This chapter from the book Tools for Teaching by Barbara Gross Davis is a great place to start for ideas and tips about increasing student motivation in your classes. The author presents a handy distillation of research on motivation and uses examples and anecdotes that bring this material to life. In addition to general strategies, this chapter addresses successful instructional behaviors, how to structure a course to motivate students, de-emphasizing grades and responding with other types of feedback to students, and tips to encourage students to complete assigned readings. A reference list points the way to more specific information.

Barbara Gross Davis

123

A probabilistic approach for validating protein NMR chemical shift assignments  

Energy Technology Data Exchange (ETDEWEB)

It has been estimated that more than 20% of the proteins in the BMRB are improperly referenced and that about 1% of all chemical shift assignments are mis-assigned. These statistics also reflect the likelihood that any newly assigned protein will have shift assignment or shift referencing errors. The relatively high frequency of these errors continues to be a concern for the biomolecular NMR community. While several programs do exist to detect and/or correct chemical shift mis-referencing or chemical shift mis-assignments, most can only do one, or the other. The one program (SHIFTCOR) that is capable of handling both chemical shift mis-referencing and mis-assignments, requires the 3D structure coordinates of the target protein. Given that chemical shift mis-assignments and chemical shift re-referencing issues should ideally be addressed prior to 3D structure determination, there is a clear need to develop a structure-independent approach. Here, we present a new structure-independent protocol, which is based on using residue-specific and secondary structure-specific chemical shift distributions calculated over small (3-6 residue) fragments to identify mis-assigned resonances. The method is also able to identify and re-reference mis-referenced chemical shift assignments. Comparisons against existing re-referencing or mis-assignment detection programs show that the method is as good or superior to existing approaches. The protocol described here has been implemented into a freely available Java program called 'Probabilistic Approach for protein Nmr Assignment Validation (PANAV)' and as a web server (http://redpoll.pharmacy.ualberta.ca/PANAVhttp://redpoll.pharmacy.ualberta.ca/PANAV) which can be used to validate and/or correct as well as re-reference assigned protein chemical shifts.

Wang Bowei [Shanghai American School Pudong (China); Wang, Yunjun; Wishart, David S., E-mail: david.wishart@ualberta.c [University of Alberta, Departments of Computing Science and Biological Sciences (Canada)

2010-06-15

124

Exploring the basic elements required for an effective educator-student relationship in nursing education / Kathleen Froneman  

OpenAIRE

An effective educator-student relationship is a key factor to ensure a positive learning climate where learning can take place. Educators must work together to build caring relationships with students, provide support to eliminate barriers and create a positive learning climate. This will establish an atmosphere characterised by mutual support, caring and understanding, all of which are fundamental to a sound educator-student relationship. Resilience research consistently points to the import...

Froneman, Kathleen

2014-01-01

125

Reflective practice: assessment of assignments in English for Specific Purposes  

OpenAIRE

The construct alternative assessment has been widely used in higher education. It is often defined as any type of assessment of learners who provide a response to an assignment. The key features of alternative assessment are active participation of learners in self-evaluation of their performance, and the development of reflective thinking through reflective thinking (Schön, 1983). The success of alternative assessment in language teaching is predetermined by student’s performance and demo...

Galina Kavaliauskiené; Ligija Kaminskiené; Lilija Anusiené

2007-01-01

126

College Textbook Reading Assignments and Class Time Activity  

Science.gov (United States)

It has been reported (Lei, Barlett, Gorney, & Herschbach, 2010; Sikorski et al., 2002) that only a minority of college students actually read the course textbook or other assigned readings in preparation for examinations. Suggested strategies to remedy this situation include quizzes (Ruscio, 2001; Ryan, 2006), study worksheets (Aagaard &…

Aagaard, Lola; Conner, Timothy W., II; Skidmore, Ronald L.

2010-01-01

127

Engineering Your Own Superbug: A Useful Assignment to Evaluate Real Learning Comprehension in Microbiology Classes †  

OpenAIRE

The learning comprehension of students in microbiology classes is not easy to evaluate, particularly when the student population is diverse in terms of backgrounds, majors, levels of training and preparedness, and the students’ expectations and enthusiasm for the class. It is difficult to design a one-size-fits-all exam that best suits a mixed student population; and most traditional assignments/case studies focusing on particular microbes or topics might not readily assess students’ over...

Yun-Chi Chen

2013-01-01

128

Engineering Your Own Superbug: A Useful Assignment to Evaluate Real Learning Comprehension in Microbiology Classes  

OpenAIRE

The learning comprehension of students in microbiology classes is not easy to evaluate, particularly when the student population is diverse in terms of backgrounds, majors, levels of training and preparedness, and the students’ expectations and enthusiasm for the class. It is difficult to design a one-size-fits-all exam that best suits a mixed student population; and most traditional assignments/case studies focusing on particular microbes or topics might not readily assess students’ over...

Yun-Chi Chen

2013-01-01

129

The Art of Probability Assignment  

OpenAIRE

The problem of assigning probabilities when little is known is analized in the case where the quanities of interest are physical observables, i.e. can be measured and their values expressed by numbers. It is pointed out that the assignment of probabilities based on observation is a process of inference, involving the use of Bayes' theorem and the choice of a probability prior. When a lot of data is available, the resulting probability are remarkably insensitive to the form o...

Dimitrov, Vesselin I.

2012-01-01

130

Practical Homework Assignments As Part Of Chemistry Teaching And Learning  

Directory of Open Access Journals (Sweden)

Full Text Available The paper presents two examples of classroom practices when practical research tasks in primary and secondary school are assigned as homework. The task for primary school students was aimed at developing divergent thinking, which is evidenced and illustrated by some examples of students’ solutions. The task for secondary school students illustrates how these students are able to apply their classroom knowledge of acids, bases and indicators on the substances they can find in everyday life. The students performed the following activities: problem analysis, action planning, and equipment selection/assembling, performing the experiment, measuring (mass, volume, data recording, and drawing conclusions. The results of both tasks served as a basis for introducing new contents in the classroom and stimulated active participation of a larger number of students.Keywords:

Dragica Trivic

2010-12-01

131

Mapping Learning Outcomes and Assignment Tasks for SPIDER Activities  

Directory of Open Access Journals (Sweden)

Full Text Available Modern engineering programs have to address rapidly changing technical content and have to enable students to develop transferable skills such as critical evaluation, communication skills and lifelong learning. This paper introduces a combined learning and assessment activity that provides students with opportunities to develop and practice their soft skills, but also extends their theoretical knowledge base. Key tasks included self directed inquiry, oral and written communication as well as peer assessment. To facilitate the SPIDER activities (Select, Prepare and Investigate, Discuss, Evaluate, Reflect, a software tool has been implemented in the learning management system Moodle. Evidence shows increased student engagement and better learning outcomes for both transferable as well as technical skills. The study focuses on generalising the relationship between learning outcomes and assignment tasks as well as activities that drive these tasks. Trail results inform the approach. Staff evaluations and their views of assignments and intended learning outcomes also supported this analysis.

Lyn Brodie

2011-05-01

132

Course Grades and Academic Performance by University Students: A Two-Stage Least-Squares Analysis.  

Science.gov (United States)

Results suggest that while homework assignments, tests, and required texts increase the time students allot to a given course, and time allocated to a given course has a positive effect on course grades, the combination has a negative effect on course grade. High school performance is positively related to time given to a course but not to course…

Frisbee, William R.

1984-01-01

133

Comparing Examples: WebAssign versus Textbook  

Science.gov (United States)

Research shows students can learn from worked examples.^1 This pilot study compared two groups of students' performance (10 each) in solving physics problems. One group had access to interactive examples^2 released in WebAssign^3, while the other group had access to the counterpart textbook examples. Verbal data from students in problem solving sessions was collected using a think aloud protocol^4 and the data was analyzed using Chi's procedures.^5 An explanation of the methodology and results will be presented. Future phases of this pilot study based upon these results will also be discussed. ^1Atkinson, R.K., Derry, S.J., Renkl A., Wortham, D. (2000). ``Learning from Examples: Instructional Principles from the Worked Examples Research'', Review of Educational Research, vol. 70, n. 2, pp. 181-214. ^2Serway, R.A. & Faughn, J.S. (2006). College Physics (7^th ed.). Belmont, CA: Thomson Brooks/Cole. ^3 see www.webassign.net ^4 Ericsson, K.A. & Simon, H.A. (1984). Protocol Analysis: Verbal Reports as Data. Cambridge, Massachusetts: The MIT Press. ^5 Chi, Michelene T.H. (1997). ``Quantifying Qualitative Analyses of Verbal Data: A Practical Guide,'' The Journal of the Learning Sciences, vol. 6, n. 3, pp. 271-315.

Richards, Evan; Polak, Jeff; Hardin, Ashley; Risley, John, , Dr.

2005-11-01

134

Capacity constrained assignment in spatial databases  

DEFF Research Database (Denmark)

Given a point set P of customers (e.g., WiFi receivers) and a point set Q of service providers (e.g., wireless access points), where each q 2 Q has a capacity q.k, the capacity constrained assignment (CCA) is a matching M Q × P such that (i) each point q 2 Q (p 2 P) appears at most k times (at most once) in M, (ii) the size of M is maximized (i.e., it comprises min{|P|, P q2Q q.k} pairs), and (iii) the total assignment cost (i.e., the sum of Euclidean distances within all pairs) is minimized. Thus, the CCA problem is to identify the assignment with the optimal overall quality; intuitively, the quality of q's service to p in a given (q, p) pair is anti-proportional to their distance. Although max-flow algorithms are applicable to this problem, they require the complete distance-based bipartite graph between Q and P. For large spatial datasets, this graph is expensive to compute and it may be too large to fit in main memory. Motivated by this fact, we propose efficient algorithms for optimal assignment that employ novel edge-pruning strategies, based on the spatial properties of the problem. Additionally, we develop approximate (i.e., suboptimal) CCA solutions that provide a trade-off between result accuracy and computation cost, abiding by theoretical quality guarantees. A thorough experimental evaluation demonstrates the efficiency and practicality of the proposed techniques.

U, Leong Hou; Yiu, Man Lung

2008-01-01

135

The Economic Naturalist Writing Assignment  

Science.gov (United States)

Several months after having completed an introductory economics course, most students are no better able to answer simple economic questions than students who never took the course. The problem seems to be that principles courses try to teach students far too much, with the result that everything goes by in a blur. The good news is that a…

Frank, Robert H.

2006-01-01

136

Cross-lingual keyword assignment  

CERN Document Server

This paper presents a language-independent approach to controlled vocabulary keyword assignment using the EUROVOC thesaurus. Due to the multilingual nature of EUROVOC, the keywords for a document written in one language can be displayed in all eleven official European Union languages. The mapping of documents written in different languages to the same multilingual thesaurus furthermore allows cross-language document comparison. The assignment of the controlled vocabulary thesaurus descriptors is achieved by applying a statistical method that uses a collection of manually indexed documents to identify, for each thesaurus descriptor, a large number of lemmas that are statistically associated to the descriptor. These associated words are then used during the assignment procedure to identify a ranked list of those EUROVOC terms that are most likely to be good keywords for a given document. The paper also describes the challenges of this task and discusses the achieved results of the fully functional prototype.

Steinberger, R

2006-01-01

137

One-shot or Embedded? Assessing Different Delivery Timing for Information Resources Relevant to Assignments  

OpenAIRE

Objective – This study aims to determine if the timing of library in-class presentations makes a difference in the type and quality of resources students use for each of four assignments in an introductory speech class. This comparison of content delivery timing contrasts a single, 50-minute lecture early in the semester with four approximately 12-minute lectures offered just before each assignment.Methods – First-year engineering students taking Fundamentals of Speech C...

Megan Sapp Nelson; Amy Van Epps

2013-01-01

138

Designing Cancer-Killing Artificial Viruses to Improve Student Understanding of Microbiology  

OpenAIRE

Our objective was to assess the effectiveness of a “learning by designing” group project used in a lower-division Microbiology course. Students used knowledge gained from the course to design an artificial virus that would kill cancer cells. The assignment required groups to integrate the individual course topics into a unified, complex understanding of the field of microbiology. Throughout the course, students and the instructor collaborated in creating a rubric to evaluate the groups’...

Andy Kuniyuki; Gwen Sharp

2011-01-01

139

Using In-class Group Exercises to Enhance Lectures and Provide Introductory Physics Students an Opportunity to Perfect Problem Solving Skills through Interactions with Fellow Students  

Science.gov (United States)

In this pilot project, one hour of lecture time was replaced with one hour of in-class assignments, which groups of students collaborated on. These in-class assignments consisted of problems or projects selected for the calculus-based introductory physics students The first problem was at a level of difficulty that the majority of the students could complete with a small to moderate amount of difficulty. Each successive problem was increasingly more difficult, the last problem being having a level of difficulty that was beyond the capabilities of the majority of the students and required some instructor intervention. The students were free to choose their own groups. Students were encouraged to interact and help each other understand. The success of the in-class exercises were measured using pre-tests and post-tests. The pre-test and post-test were completed by each student independently. Statistics were also compiled on each student's attendance record and the amount of time spent reading and studying, as reported by the student. Statistics were also completed on the student responses when asked if they had sufficient time to complete the pre-test and post-test and if they would have completed the test with the correct answers if they had more time. The pre-tests and post-tests were not used in the computation of the grades of the students.

Trout, Joseph; Bland, Jared

2013-03-01

140

Assignment of Infrared Ammonia Spectra  

Science.gov (United States)

Global ammonia emissions have more than doubled during the period of industrialisation, largely due to widespread use of intensive agricultural techniques and in particular the use of fertilisers and are are set to double again by 2050. However the ammonia data in the present version of HITRAN is not only missing at key wavelengths, but also have significant problems. HITRAN contains 28 057 14NH_3 lines of which some 10 % lack full quantum number assignments. Furthermore 1190 of the assigned lines have demonstrably incorrect assignments (for example are parity forbidden); others have incorrect lower state energies or symmetries leading to incorrect predictions of temperature-dependent spectra. We have undertaken a systematic (re-)analysis of the data in HITRAN. This has been done using both lower state and upper state combination differences starting from a consistent set of lower state energy levels [P. Chen et al, J. Mol. Spectrosc., 236. 116 (2006)] and by using the newly computed variational line list BYTe [S. N. Yurchenko, R. J. Barber , and J. Tennyson, Mon. Not. R. Astron. Soc., in press, (2011)]. Previous errors and misassignments have been corrected and significant progress is being making new assignments. Comparisons with the BYTe line list suggest that HITRAN is also missing a significant number of important transtions, particular at frequencies above 5000 Cm-1.

Tennyson, J.; Down, M. J.; Hill, C.; Barber, R. J.; Yurchenko, S. N.

2011-06-01

141

Incorporating Inquiry into Upper-Level Undergraduate Homework Assignments: The Mini-Journal  

Science.gov (United States)

The US National Science Education Standards (2000) state that science should be taught through inquiry. The five essential features of classroom inquiry are that the leaner (i) engages in scientifically oriented questions, (ii) gives priority to evidence in responding to questions, (iii) formulates explanations from evidence, (iv) connects explanations to scientific knowledge, and (v) communicates and justifies explanations. One difficulty in achieving this vision at the university level lies in the common perception that inquiry be fully open and unstructured, and that its implementation will be impractical due to time and material constraints. In an NSF-funded project, "CUES: Connecting Undergraduates to the Enterprise of Science," faculty developed new inquiry-based laboratory curriculum materials using a "mini-journal" approach, which is designed as an alternative to the cookbook laboratory and represents the way that scientists do science. Here we adapt this approach to a homework assignment in an upper-level Planetary Science class, and show that inquiry is achievable in this setting. Traditional homeworks in this class consisted of problem sets requiring algebraic manipulation, computation, and in most cases an appraisal of the result Longer questions are broken down into chunks worth 1 to 4 points. In contrast, the mini-journal is a short article that is modeled in the way that scientists do and report science. It includes a title, abstract, introduction (with clear statement of the problem to be tackled), a description of the methods, results (presented as both tables and graphs), a discussion (with suggestions for future work) and a list of cited work. Students devise their research questions and hypothesis from the paper based on a logical next step in the investigation. Guiding questions in the discussion can assist the students ("it would be interesting to evaluate the effect of ..."). Students submit their own minijournal, using the same journal-style format. A detailed grading rubric was supplied with the mini-journal, with credit given for formatting, accuracy of calculation, and quality of intepretation and discussion. In the examples we present, research is conducted via spreadsheet modeling, where the students develop their own spreadsheets. The key differences between the old and new formats include (i) the active participation of the students in defining the problem that they will pursue, (ii) the open-ended nature of the inquiry, such that students need to recognize when they have enough information to answer their question, (iii) presentation of results in graphical and tabular formats, and (iv) a written discussion of their findings. Based on detailed student and instructor feedback, our conclusions are: (i) Limited inquiry is achievable in upper-level science homework assignments, and is transferable to other topics and classes (ii) Students experience discomfort on being presented with an open-ended assignment, but like the freedom to define their own homework problem (iii) Students recognize that the reading, writing and critical thinking skills employed in the minijournal format increase their understanding (iv) Students suggest a combination of minijournal and traditional homework formats in this class, or replacing midterm exams with minijournals (v) Student written comments are far more useful than Likert scale responses in assessing instructional techniques and effectiveness

Whittington, Alan; Speck, Angela; Witzig, Stephen; Abell, Sandra

2010-05-01

142

The multi-objective constrained assignment problem  

Science.gov (United States)

Assignment problems are a common area of research in operational research and computer science. Military applications include military personnel assignment, combat radio frequency assignment, and weapon target assignment. In general, assignment problems can be found in a wide array of areas, from modular placement to resource scheduling. Many of these problems are very similar to one another. This paper models and compares some of the assignment problems in literature. These similar problems are then generalized into a generalized multi-objective problem, the constrained assignment problem. Using a multi-objective genetic algorithm, we solve an example of a constrained assignment problem called the airman assignment problem. Results show that good solutions along the interior portion of the Pareto front are found in earlier generations and later generations produce more exterior points.

Kleeman, Mark P.; Lamont, Gary B.

2007-04-01

143

The Random Quadratic Assignment Problem  

CERN Document Server

Optimal assignment of classes to classrooms \\cite{dickey}, design of DNA microarrays \\cite{carvalho}, cross species gene analysis \\cite{kolar}, creation of hospital layouts cite{elshafei}, and assignment of components to locations on circuit boards \\cite{steinberg} are a few of the many problems which have been formulated as a quadratic assignment problem (QAP). Originally formulated in 1957, the QAP is one of the most difficult of all combinatorial optimization problems. Here, we use statistical mechanical methods to study the asymptotic behavior of problems in which the entries of at least one of the two matrices that specify the problem are chosen from a random distribution $P$. Surprisingly, this case has not been studied before using statistical methods despite the fact that the QAP was first proposed over 50 years ago \\cite{Koopmans}. We find simple forms for $C_{\\rm min}$ and $C_{\\rm max}$, the costs of the minimal and maximum solutions respectively. Notable features of our results are the symmetry of ...

Paul, Gerald; Stanley, H Eugene

2011-01-01

144

Statistics Anxiety among Postgraduate Students  

Directory of Open Access Journals (Sweden)

Full Text Available Most postgraduate programmes, that have research components, require students to take at least one course of research statistics. Not all postgraduate programmes are science based, there are a significant number of postgraduate students who are from the social sciences that will be taking statistics courses, as they try to complete their postgraduate studies. As postgraduate students come from varied backgrounds, from those who have left school for more than a decade, to those who just completed their undergraduate studies, postgraduate statistics course may be one of the toughest to teach. These students come into the course with preconceived thoughts and attitude, which would either increase their anxiety towards statistics, or decrease their anxiety. Previous studies have shown that students reported high level of statistics anxiety during a statistics course. Unfortunately, there are limited studies on statistics anxiety in the Malaysian postgraduate population. Therefore, this study aims to determine the level of anxiety towards statistics among postgraduate student. This study also aims to explore factors that are associated with statistics anxiety among postgraduate students at the Faculty of Education, UKM. As a secondary outcome, this study explores the type of evaluation preferred by postgraduate students in relation to a statistics course. All postgraduate students who registered for the Research Statistics course at the Faculty of Education, National University of Malaysia, during the study period were invited to participate in the study. A total of 141 students completed the questionnaire and was included in this paper. This study found that a significant (21.7% of the students surveyed have anxiety in at least one of the statistics anxiety domain, either in anxiety towards class activities, attitude towards class, attitude towards Mathematics or self-perception of ability to perform in statistics. This study found that ethnicity was associated with higher anxiety towards class activities, with the Malays being more anxious compared to the non-Malays. Both ethnicity and bachelor’s degree were associated with attitude towards class and attitude towards Mathematics. For these two domains, the male students and students from non-science based bachelor’s degree, showed more anxiety compared to female students. Self-perception of ability to perform in statistics was not associated with any socio-demographic factors included in this study. Students in this study overwhelmingly preferred individual assignment as an evaluation method, followed by mid-semester examination, and the final semester examination. Least preferred were online participation and presentation.

Denise Koh

2014-12-01

145

a Study of Women Engineering Students and Time to Completion of First-Year Required Courses at Texas A&M University  

Science.gov (United States)

This paper reports findings on gender that were part of a larger study reviewing time to completion of course work that includes the first two semesters of calculus, chemistry, and physics, which are often considered the stumbling points or "barrier courses" to an engineering baccalaureate degree. Texas A&M University terms these courses core body of knowledge (CBK), and statistical analysis was conducted on two cohorts of first-year enrolling engineering students at the institution. Findings indicate that gender is statistically significantly related to completion of CBK with female engineering students completing required courses faster than males at the .01 level (p = 0.008). Statistical significance for gender and ethnicity was found between white male and white female students at the .01 level (p = 0.008). Descriptive analysis indicated that of the five majors studied (chemical, civil, computer, electrical, and mechanical engineering), women completed CBK faster than men, and African American and Hispanic women completed CBK faster than males of the same ethnicity.

Kimball, Jorja; Cole, Bryan; Hobson, Margaret; Watson, Karan; Stanley, Christine

146

Librarian-Faculty Collaboration on a Library Research Assignment and Module for College Experience Classes  

Science.gov (United States)

A librarian and faculty member collaborated on creating a library research module for students in the faculty member's college success classes to help them learn the fundamentals of information literacy. Using the assignment "My Ideal Job," the students met four or more times with the librarian in a computer classroom to learn how…

Keyes, Anne; Barbier, Pat

2013-01-01

147

Using Content Reading Assignments in a Psychology Course to Teach Critical Reading Skills  

Science.gov (United States)

Liberal arts students are expected to graduate college with fully developed critical reading and writing skills. However, for a variety of reasons these skills are not always as well developed as they might be--both during and upon completion of college. This paper describes a reading assignment that was designed to increase students'…

Van Camp, Debbie; Van Camp, Wesley

2013-01-01

148

Applied and Transformed Understanding in Introductory Psychology: Analysis of a Final Essay Assignment  

Science.gov (United States)

This paper describes a case study of the impact of the introductory psychology course on students' understanding of their life experiences and course-related ideas. Student responses to a final essay assignment were analyzed to construct composites for areas of applied and transformed understanding. Results are important for psychology teachers…

Clark, Kevin M.

2010-01-01

149

Library-Based Assignments That Enrich the Business Communication Course.  

Science.gov (United States)

Reviews the benefits of library work (and some cautions) before describing four assignments that exploit library resources: a business report assignment; a professional journal assignment; a style manual format assignment; and an international business communication assignment. (SG)

Hiemstra, Kathleen M.

2002-01-01

150

Can Facebook Make Students Remember? An Experimental Study from Japan  

Science.gov (United States)

This study experimentally manipulated the way students submit their assignments and tested the number of new words that are learned in each condition. The results showed that students who submitted their assignments through Facebook learned as much as those who submitted their assignment in a traditional way. In the light of these findings, we can…

Acar, Adam

2014-01-01

151

7 CFR 247.21 - Caseload assignment.  

Science.gov (United States)

...2010-01-01 2010-01-01 false Caseload assignment. 247.21 Section 247.21 Agriculture Regulations of the Department of...NUTRITION PROGRAMS COMMODITY SUPPLEMENTAL FOOD PROGRAM § 247.21 Caseload assignment. (a) How does FNS...

2010-01-01

152

Using Content Reading Assignments in a Psychology Course to Teach Critical Reading Skills  

Directory of Open Access Journals (Sweden)

Full Text Available Liberal arts students are expected to graduate college with fully developed critical reading and writing skills. However, for a variety of reasons these skills are not always as well developed as they might be - both during and upon completion of college. This paper describes a reading assignment that was designed to increase students’ discipline-specific critical reading and writing skills. The assignment was piloted in a mid-level social psychology class. Pre-test/post-test comparisons indicate substantial improvement in students’ ability to identify thesis statements, recognize and interpret evidence, and other critical reading skills. Furthermore, students themselves rate the assignment as efficacious in helping them with both their reading and writing skills.

Debbie Van Camp

2013-02-01

153

Collaborative Writing: Student Interaction and Response.  

Science.gov (United States)

Reports student responses to a collaborative writing assignment. Argues that in the real world, collaborative efforts are common and that students need to learn how to work together on a project. (FL)

McLaughlin, Margaret; Fennick, Ruth

1987-01-01

154

Students' Experience of External Studies. Student Diary Project.  

Science.gov (United States)

This study examined students' experiences of external study at Gippsland Institute through the method of student self-report study diaries. Questions which were addressed include: (1) Why are external students taking courses at Gippsland? (2) What do they hope to gain? (3) How do they handle particular study guides and assignment materials? (4)…

Parer, Michael S.

155

A Fast Heuristic Algorithm for the Train Unit Assignment Problem  

OpenAIRE

In this paper we study a railway optimization problem known as the Train Unit Assignment Problem. A train unit consists of a self-contained train with an engine and a set of wagons with passenger seats. Given a set of timetabled train trips, each with a required number of passenger seats, and a set of train units, each with a given number of available seats, the problem calls for the best assignment of the train units to the trips, possibly combining more than one train unit for a given trip,...

Cacchiani, Valentina; Caprara, Alberto; Toth, Paolo

2012-01-01

156

Requirements Engineering  

CERN Document Server

Written for those who want to develop their knowledge of requirements engineering process, whether practitioners or students.Using the latest research and driven by practical experience from industry, Requirements Engineering gives useful hints to practitioners on how to write and structure requirements. It explains the importance of Systems Engineering and the creation of effective solutions to problems. It describes the underlying representations used in system modeling and introduces the UML2, and considers the relationship between requirements and modeling. Covering a generic multi-layer r

Hull, Elizabeth; Dick, Jeremy

2011-01-01

157

Mini-Journals: Incorporating Inquiry, Quantitative Skills and Writing into Homework Assignments for Geochemistry and Planetary Science  

Science.gov (United States)

As part of an NSF-funded project, "CUES: Connecting Undergraduates to the Enterprise of Science," new inquiry-based homework materials were developed for two upper-level classes at the University of Missouri: Geochemistry (required for Geology majors, fulfills the computing requirement by having 50% of the grade come from five spreadsheet-based homework assignments), and Solar System Science (open to seniors and graduate students, co-taught and cross-listed between Geology and Physics & Astronomy). Inquiry involves activities where the learner engages in scientifically oriented questions, gives priority to evidence in responding to questions, formulates explanations from evidence, connects explanations to scientific knowledge, and communicates and justifies explanations. We engage students in inquiry-based learning by presenting homework exercises as "mini-journal" articles that follow the format of a scientific journal article, including a title, authors, abstract, introduction, methods, results, discussion and citations to peer-reviewed literature. The mini-journal provides a scaffold and serves as a springboard for students to develop and carry out their own follow-up investigation. They then present their findings in the form of their own mini-journal. Mini-journals replace traditional homework problem sets with a format that more directly reflects and encourages scientific practice. Students are engaged in inquiry-based homework which encompass doing, thinking, and communicating, while the mini-journal allows the instructor to contain lines of inquiry within the limits posed by available resources. In the examples we present, research is conducted via spreadsheet modeling, where the students develop their own spreadsheets. Example assignments from Geochemistry include "Trace Element Partitioning During Mantle Melting and MORB Crystallization" and "Isotopic Investigations of Crustal Evolution in the Midcontinent US". The key differences between the old and new formats include (i) active participation of the students in defining the question/problem that they will pursue, within well-defined boundaries, (ii) open-ended nature of the inquiry, so that students need to recognize when they have enough information to answer their question, (iii) extensive spreadsheet manipulation and presentation of results in graphical and tabular formats, and (iv) a written discussion of their findings. Grading is weighted more towards how the problem was addressed, and how findings are presented and interpreted, and less on actual numerical answers. Survey responses from students indicate that they experience discomfort on being presented with an open-ended assignment, but like the freedom to define their own problem. Students also recognize that reading, writing and critical thinking skills employed in the minijournal format increase their understanding of content. The combination of calculation and writing components make these assignments particularly useful for classes designated as "computer-based", and/or "writing intensive" (or similar designations).

Whittington, A. G.; Speck, A.; Witzig, S.

2011-12-01

158

Articles as Assignments - Modalities and Experiences of Wikipedia Use in University Courses  

Science.gov (United States)

In spite of perceived quality deficits, Wikipedia is a popular information resource among students. Instructors increasingly take advantage of the positive student attitude through actively integrating Wikipedia as a learning tool into university courses. The contribution raises the question if Wikipedia assignments in university courses are suited to make complex research, editing and bibliographic processes through which scholarship is produced transparent to students and to effectively improve their research and writing skills.

Wannemacher, Klaus

159

Using student generated blogs to create a global perspective on climate change  

Science.gov (United States)

Students in an introductory Global Climate Change college course develop a global perspective on climate change causes, impacts, and mitigation through the use of student generated content in the form of blogging. The students are from diverse backgrounds and mostly non-science majors. They each create a blog for an assigned country. They are immersed in active learning through daily activities that teach them to use numerical data to create and analyze graphs for their blogs. Students are familiarized with other science skills as well, such as how to critically evaluate their sources. This method of using student generated content and active learning encourages students to immerse themselves in the viewpoint of people living in other countries. This creates a tangible understanding of the global stakes of climate change and fosters an emotional involvement in what otherwise might have been an abstract or intimidating topic. The front page of the course blog opens with a world map and a feed from each student's blog. Upon clicking on a country on the world map, the reader is taken to the blog page created by the student in charge of that country. The United States is reserved as a sample page created by the instructor. Throughout the semester, students follow a series of assignments that build their knowledge of the geography, climate, and culture of their assigned country, and these appear as tabs, or informational pages, on their blog. Students are taught to use Excel and they each create temperature and precipitation graphs that compare the climate of a city in their assigned country to that of their home city. Students then write their first blog post on their country's contribution to climate change and how that compares to other countries in the world by importing carbon dioxide emissions data into Excel and creating their own graphs to be used as images in their blog post. The second blog post covers potential climate change impacts on their assigned country such as sea level rise or heat waves. Students then discuss what their country is doing to mitigate climate change, including its role in the Kyoto Protocol and any policies for alternative energy or carbon sequestration. Lastly, students write their final blog post on how their country plans to adapt to climate change. After each blog post, students are required to comment on their classmates' posts. This encourages them to recognize the interdependence of the countries they study, a connection often overlooked in simple paper writing exercises, but made visible through the use of the blogs.

Schuenemann, K. C.

2012-12-01

160

2012 SARA Students Technical Report  

Energy Technology Data Exchange (ETDEWEB)

The Service Academy Research Associates (SARA) program provides an opportunity for Midshipmen and Cadets from US Service Academies to participate in research at Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and Sandia National Laboratory for several weeks during the summer as part of their summer training assignments. During the summer of 2012, three Midshipmen were assigned to work with the XCP Division at LANL for approximately 5-6 weeks. As one of the nation's top national security science laboratories, LANL stretches across 36 square miles, has over 2,100 facilities, and employs over 9,000 individuals including a significant number of students and postdocs. LANL's mission is to 'apply science and technology to: ensure the safety, security, and reliability of the US nuclear deterrent, reduce global threats, and solve other emerging national security challenges.' While LANL officially operates under the US Department of Energy (DoE), fulfilling this mission requires mutual cooperation with the US Department of Defense (DoD) as well. LANL's high concentration of knowledge and experience provides interns a chance to perform research in many disciplines, and its connection with the DoD in both operation and personnel gives SARA students insight to career possibilities both during and after military service. SARA students have plenty of opportunity to enjoy hiking, camping, the Los Alamos YMCA, and many other outdoor activities in New Mexico while staying at the Buffalo Thunder Resort, located 20 miles east of the lab. XCP Division is the Computational Physics division of LANL's Weapons Department. Working with XCP Division requires individuals to be Q cleared by the DoE. This means it is significantly more convenient for SARA students to be assigned to XCP Division than their civilian counterparts as the DoD CNWDI clearance held by SARA students is easily transferred to the lab prior to the students arriving at the start of the summer. SARA students working with XCP Division were given a comprehensive introduction into nuclear engineering and physics, nuclear weapons, and radiation transport and detection via texts and lectures at various classification levels. Students also attended tours of several prominent facilities at LANL including TA-41 Ice House, TA-55 PF-4 plutonium facility, the Nicholas C. Metropolis Center for Modeling and Simulation, also known as the Secure Computing Center (SCC), and the Dual-Axis Radiological Hydro Test (DARHT) facility; in addition, SARA students accompanied by LANL staff traveled to Minot AFB in North Dakota for tours of the 5th Bomb Wing and 91st Missile Wing facilities. Students participated in a week long class on the Monte Carlo N Particle (MCNP) code to supplement their understanding of radiation transport simulations. SARA students were then tasked with using this knowledge to model radiation detectors and use MCNP to compare their models to experimental data and previously accepted models.

Briccetti, Angelo [Los Alamos National Laboratory; Lorei, Nathan [Los Alamos National Laboratory; Yonkings, David [Los Alamos National Laboratory; Lorio, David [Los Alamos National Laboratory; Goorley, John T. [Los Alamos National Laboratory; Sood, Avneet [Los Alamos National Laboratory

2012-07-30

161

GPON system with user controlled port-ID assignment method  

Science.gov (United States)

Passive Optical Network (PON) system with characters of low-cost and high-efficiency has become a promising solution for access network in relieving the bandwidth bottleneck problem. PON system can provide high-speed optical subscriber networks with broad bandwidth and long distance transmission. In current telecommunication carriers' PON system, different service has its given priority which is configured by carriers based on common requirements. However, different users have their own requirement and inflexibility of the given default service priority causes users' inconvenience and frustration. In this paper, we propose a novel method of user controlled Port-IDentifier (Port-ID) assignment in a Gigabit-capable PON (GPON) system. This method provides users a more individualized priority determination mechanism for end users through assigning a multi-level Port-ID to different service. Then users can manage their own bandwidth based on their requirements for different service and carriers can provide a flexible service management mechanism.

Zhang, Na; Yoshiuchi, Hideya

2008-11-01

162

ncIDP-assign : a SPARKY extension for the effective NMR assignment of intrinsically disordered proteins  

DEFF Research Database (Denmark)

We describe here the ncIDP-assign extension for the popular NMR assignment program SPARKY, which aids in the sequence-specific resonance assignment of intrinsically disordered proteins (IDPs). The assignment plugin greatly facilitates the effective matching of a set of connected resonances to the correct position in the sequence by making use of IDP random coil chemical shifts. AVAILABILITY: The ncIDP-assign extension is available at http://www.protein-nmr.org/.

Tamiola, Kamil; Mulder, Frans A.A.

2011-01-01

163

Caseload Assignments. Position Statement. Revised  

Science.gov (United States)

It is the position of the National Association of School Nurses (NASN) that schools should employ professionally prepared Registered Nurses, to conduct and supervise school health programs which address the variety of health problems experienced by school children. NASN recommends a formula-based approach with minimum ratios of nurses-to-students

DuRant, Bonnie V.; Gibbons, Linda J.; Poole, Cynthia; Suessmann, Mary; Wyckoff, Leah

2010-01-01

164

Assigning uncertainties to scientific data  

International Nuclear Information System (INIS)

Long-standing problems of assigning uncertainties to scientific data became apparent in recent years when uncertainty information (covariance files) had to be added to applications-oriented large libraries of evaluated nuclear data such as ENDF and JEF. Questions arose about the best way to express uncertainties, the meaning of statistical and systematic errors, the origin of correlations and the construction of covariance matrices, the combination of uncertain data from different sources, the general usefulness of results that are strictly valid only for Gaussians or only for linear statistical models, and so forth. Conventional statistical theory is often unable to give unambiguous answers and tends to fail when statistics are poor, making prior information crucial. Modern probability theory, on the other hand, incorporating results from information, decision, and group theory, is shown to provide straight and unique answers to such questions and to deal easily with prior information and small samples

165

Evaluation of embedded audio feedback on writing assignments.  

Science.gov (United States)

The purpose of this pilot study was to compare embedded audio feedback (EAF), which faculty provided using the iPad(®) application iAnnotate(®) PDF to insert audio comments and written feedback (WF), inserted electronically on student papers in a series of writing assignments. Goals included determining whether EAF provides more useful guidance to students than WF and whether EAF promotes connectedness among students and faculty. An additional goal was to ascertain the efficiency and acceptance of EAF as a grading tool by nursing faculty. The pilot study was a quasi-experimental, cross-over, posttest-only design. The project was completed in an Informatics in Health Care course. Faculty alternated the two feedback methods on four papers written by each student. Results of surveys and focus groups revealed that students and faculty had mixed feelings about this technology. Student preferences were equally divided between EAF and WF, with 35% for each, and 28% were undecided. [J Nurs Educ. 2015;54(1):41-44.]. PMID:25535759

Graves, Janet K; Goodman, Joely T; Hercinger, Maribeth; Minnich, Margo; Murcek, Christina M; Parks, Jane M; Shirley, Nancy

2015-01-01

166

The Implementation of a New Method of Student Assessment in a Pathogenic Bacteriology Laboratory Course  

Directory of Open Access Journals (Sweden)

Full Text Available A new case study method of assessment was developed to challenge advanced undergraduate biology majors interested in medical careers and allied health professions. This method is an alternative to traditional "unknown" identifications used in many microbiology laboratories. Students used various biochemical tests and selective media throughout the course to identify organisms cultured from their own bodies. In preparing a final assessment for the course, an assignment was developed to challenge the students to apply what they had learned in a medically relevant setting. Also of importance was the elimination of further biochemical testing by these students and prevention of contact with strict pathogens in this lab, due to budget and safety constraints, respectively. Each student was provided with a clinical specimen data record sheet and additional information about their "diseased patient". Students used analytical skills and critical thinking, as well as knowledge gained throughout the semester, to logically deduce the causative agent of disease in the mock patients. Students were required to: (i describe the steps in this logical deduction, (ii provide a brief overview of the characteristics and virulence factors of the organism(s, (iii investigate all disease(s caused by the organism, (iv describe symptomology of the patient in detail, and (v investigate disease treatment and prevention methods. The final assignment involved library and Internet research and culminated in a written report, which further developed writing and communication skills. Detailed descriptions of and materials for this assignment are provided along with an overall evaluation of this method after implementation.

M. Frances Hite

2009-12-01

167

Mathematics and Student Life Skills  

Science.gov (United States)

This course, designed for Miami Dade Community College, integrates arithmetic and beginning algebra for the undergraduate student. By applying math to real-life situations most students experience during college, the instructors attempt to make math both fun and applicable. The instructors specifically wish to dissipate the anxiety many college students feel when approaching math at an advanced level. Students can use the information provided on this website to help apply mathematical concepts to their own lives, while instructors can use the assignments, syllabus, and lecture notes to create their own relevant assignments in a mathematics course.

Abety, Miriam Frances

168

Wavelength and fiber assignment problems on avionic networks  

DEFF Research Database (Denmark)

This paper solves the wavelength and fiber assignment problems with systems' isolation requirements on the avionic ring networks. The experiment results give a general glace of the numbers of the wavelengths and fibers are required under certain scale of networks. At the beginning of increasing system isolation requirements on the networks with shorter span traffics will not greatly increase the wavelength consumption and it will grow faster after the isolation constrains being larger up to certain scale. Regarding the traffics with longer span, the system isolation constrains slowly cause the increase of the used wavelengths. Under all situations, the fiber consumption are mainly changed according to the system isolation constrains.

Zhang, Jiang; An, Yi

2011-01-01

169

Job assignments, intrinsic motivation and explicit incentives  

OpenAIRE

This paper considers the interplay of job assignments with the intrinsic and extrinsic motivation of an agent. Job assignments influence the self confidence of the agent, and thereby his intrinsic motivation. Monetary reward allow the principal to complement intrinsic motivation with extrinsic incentives. The main result is that the principal chooses an inefficient job assignment rule to enhance the agent's intrinsic motivation even though she can motivate him with monetary rewards. This show...

Nafziger, Julia

2008-01-01

170

Airport Gate Assignment: New Model and Implementation  

OpenAIRE

Airport gate assignment is of great importance in airport operations. In this paper, we study the Airport Gate Assignment Problem (AGAP), propose a new model and implement the model with Optimization Programming language (OPL). With the objective to minimize the number of conflicts of any two adjacent aircrafts assigned to the same gate, we build a mathematical model with logical constraints and the binary constraints, which can provide an efficient evaluation criterion for ...

Li, Chendong

2008-01-01

171

Flexible taxonomic assignment of ambiguous sequencing reads  

OpenAIRE

Abstract Background To characterize the diversity of bacterial populations in metagenomic studies, sequencing reads need to be accurately assigned to taxonomic units in a given reference taxonomy. Reads that cannot be reliably assigned to a unique leaf in the taxonomy (ambiguous reads) are typically assigned to the lowest common ancestor of the set of species that match it. This introduces a potentially severe error in the estimation of bacteria present in the sample...

Jansson Jesper; Clemente José C; Valiente Gabriel

2011-01-01

172

SUITABILITY OF AIOU TELEVISION AND ITS IMPACT ON STUDENTS’ ACHIEVEMENTS  

Directory of Open Access Journals (Sweden)

Full Text Available ABSTRACT The requirement of television for educational purposes arises when specific educational objectives are not achieved through traditional way of teaching. There are a number of things television can do better than the average teacher and traditional educational institutions, but situations where both teacher and educational institutions are not available, television is the answer to obtain educational objectives, Lochte, (1993. This research paper investigates relationship between TV broadcast time, day and duration and student achievement. Data was collected from 197 from urban and rural, male and female students of the Allama Iqbal Open University, enrolled in the spring 2006 Semester in the selected courses. No strong relationship was found between Learning from TV and academic achievement in the AIOU situation. Use of television in the AIOU Situation will be more effective if transmission day, time and duration are adjusted according to the students’ demand and when studentsassignments are based on both textbook and TV programs.

Syed Abdul SIRAJ

2008-07-01

173

Evaluating elementary-aged students' abilities to generalize and maintain fluency gains of a performance feedback writing intervention.  

Science.gov (United States)

National estimates of students' writing abilities in the United States indicate that in 2002, 72% of elementary-aged students were unable to write with grade-level proficiency (Persky, Daane, & Jin, 2003). Although performance feedback is one type of intervention that improves students' writing skills, no study to date has examined the generalization and maintenance of writing fluency improvements developed through these interventions. The primary goal of this study was to determine whether elementary-aged students assigned to a performance feedback intervention condition demonstrated evidence of greater immediate treatment effects, generalization, and maintenance than students assigned to a practice-only condition. Results revealed that in comparison with the practice-only condition (n = 52), students assigned to the performance feedback condition (n = 51) demonstrated significantly greater immediate and generalized writing fluency improvements. However, evidence of maintenance of intervention effects was limited. These findings suggest that, in isolation, performance feedback may produce short-term desired effects on students' writing fluency growth, but that explicit programming of generality may be required to produce long-term achievement gains. (PsycINFO Database Record (c) 2014 APA, all rights reserved). PMID:24708279

Hier, Bridget O; Eckert, Tanya L

2014-12-01

174

Assigning Students to Edit Wikipedia: Four Case Studies  

Science.gov (United States)

During the 2010-11 academic year, the Wikimedia Foundation, the nonprofit organization that supports Wikipedia, worked with professors at universities across the United States who were interested in using Wikipedia as a teaching tool in their classrooms through a pilot version of the Wikipedia Education Program. This article presents a case study…

Carver, Brian W.; Davis, Rochelle; Kelley, Robin T.; Obar, Jonathan A.; Davis, Lianna L.

2012-01-01

175

The ICAP (Interactive Course Assignment Pages) Publishing System  

OpenAIRE

The ICAP publishing system is an open source custom content management system that enables librarians to easily and quickly create and manage library help pages for course assignments (ICAPs), without requiring knowledge of HTML or other web technologies. The system's unique features include an emphasis on collaboration and content reuse and an easy-to-use interface that includes in-line help, simple forms and drag and drop fun...

Kim Griggs; Margaret Mellinger

2008-01-01

176

A Distributed TDMA Slot Assignment Algorithm for Wireless Sensor Networks  

OpenAIRE

Wireless sensor networks benefit from communication protocols that reduce power requirements by avoiding frame collision. Time Division Media Access methods schedule transmission in slots to avoid collision, however these methods often lack scalability when implemented in \\emph{ad hoc} networks subject to node failures and dynamic topology. This paper reports a distributed algorithm for TDMA slot assignment that is self-stabilizing to transient faults and dynamic topology ch...

Herman, T.; Tixeuil, S.

2004-01-01

177

Learning from delayed feedback: neural responses in temporal credit assignment  

OpenAIRE

When feedback follows a sequence of decisions, relationships between actions and outcomes can be difficult to learn. We used event-related potentials (ERPs) to understand how people overcome this temporal credit assignment problem. Participants performed a sequential decision task that required two decisions on each trial. The first decision led to an intermediate state that was predictive of the trial outcome, and the second decision was followed by positive or negative trial feedback. The f...

Walsh, Matthew M.; Anderson, John R.

2011-01-01

178

Automated and assisted RNA resonance assignment using NMR chemical shift statistics.  

Science.gov (United States)

The three-dimensional structure determination of RNAs by NMR spectroscopy relies on chemical shift assignment, which still constitutes a bottleneck. In order to develop more efficient assignment strategies, we analysed relationships between sequence and (1)H and (13)C chemical shifts. Statistics of resonances from regularly Watson-Crick base-paired RNA revealed highly characteristic chemical shift clusters. We developed two approaches using these statistics for chemical shift assignment of double-stranded RNA (dsRNA): a manual approach that yields starting points for resonance assignment and simplifies decision trees and an automated approach based on the recently introduced automated resonance assignment algorithm FLYA. Both strategies require only unlabeled RNAs and three 2D spectra for assigning the H2/C2, H5/C5, H6/C6, H8/C8 and H1'/C1' chemical shifts. The manual approach proved to be efficient and robust when applied to the experimental data of RNAs with a size between 20 nt and 42 nt. The more advanced automated assignment approach was successfully applied to four stem-loop RNAs and a 42 nt siRNA, assigning 92-100% of the resonances from dsRNA regions correctly. This is the first automated approach for chemical shift assignment of non-exchangeable protons of RNA and their corresponding (13)C resonances, which provides an important step toward automated structure determination of RNAs. PMID:23921634

Aeschbacher, Thomas; Schmidt, Elena; Blatter, Markus; Maris, Christophe; Duss, Olivier; Allain, Frédéric H-T; Güntert, Peter; Schubert, Mario

2013-10-01

179

47 CFR 74.402 - Frequency assignment.  

Science.gov (United States)

...will be assigned by its center frequency, channel bandwidth, and...designator. In general, the frequencies listed in this section represent...assignments may be made for the frequency halfway between those listed... (1) [Reserved] (2) HF Channels: 25.87,...

2010-10-01

180

Stress Assignment in Reading Italian Polysyllabic Pseudowords  

Science.gov (United States)

In 4 naming experiments we investigated how Italian readers assign stress to pseudowords. We assessed whether participants assign stress following distributional information such as stress neighborhood (the proportion and number of existent words sharing orthographic ending and stress pattern) and whether such distributional information affects…

Sulpizio, Simone; Arduino, Lisa S.; Paizi, Despina; Burani, Cristina

2013-01-01

181

A Useful Metaheuristic for Dynamic Channel Assignment in Mobile Cellular Systems  

Directory of Open Access Journals (Sweden)

Full Text Available The prime objective of a Channel Assignment Problem (CAP is to assign appropriate number of required channels to each cell in a way to achieve both efficient frequency spectrum utilization and minimization of interference effects (by satisfying a number of channel reuse constraints. Dynamic Channel Assignment (DCA assigns the channels to the cells dynamically according to traffic demand, and hence, can provide higher capacity (or lower call blocking probability, fidelity and quality of service than the fixed assignment schemes. Channel assignment algorithms are formulated as combinatorial optimization problems and are NP-hard. Devising a DCA, that is practical, efficient, and which can generate high quality assignments, is challenging. Though Metaheuristic Search techniques like Evolutionary Algorithms, Differential Evolution, Particle Swarm Optimization prove effective in the solution of Fixed Channel Assignment (FCA problems but they still require high computational time and therefore may be inefficient for DCA. A number of approaches have been proposed for the solution of DCA problem but the high complexity of these proposed approaches makes them unsuitable/less efficient for practical use. Therefore, this paper presents an effective and efficient Hybrid Discrete Binary Differential Evolution Algorithm (HDB-DE for the solution of DCA Problem

Deepak Kumar Singh

2012-09-01

182

Airport Gate Assignment: New Model and Implementation  

CERN Document Server

Airport gate assignment is of great importance in airport operations. In this paper, we study the Airport Gate Assignment Problem (AGAP), propose a new model and implement the model with Optimization Programming language (OPL). With the objective to minimize the number of conflicts of any two adjacent aircrafts assigned to the same gate, we build a mathematical model with logical constraints and the binary constraints, which can provide an efficient evaluation criterion for the Airlines to estimate the current gate assignment. To illustrate the feasibility of the model we construct experiments with the data obtained from Continental Airlines, Houston Gorge Bush Intercontinental Airport IAH, which indicate that our model is both energetic and effective. Moreover, we interpret experimental results, which further demonstrate that our proposed model can provide a powerful tool for airline companies to estimate the efficiency of their current work of gate assignment.

Li, Chendong

2008-01-01

183

Recognizing the "Transformational" in Preservice Digital Literacy Assignments  

Science.gov (United States)

The authors review and evaluate a Teaching Methods course in Language and Literacy, one which focuses on multiple literacies, including digital literacy and critical literacy. The course is offered in a laptop-based university program. In this article, the authors outline the context of the multiple literacies course, its resources and assignments as well as their instructional goals. Their qualitative data sources include student-created digital artifacts such as digital literacy stories and digital book talks. The researchers draw from cross-program data based on hundreds of student reflections and one-on-one interviews. The authors conclude that there are indications from their data analysis that suggest that digital literacy supports the development of "transformative elements" that can extend beyond the teacher training program.

Robertson, Lorayne; Hughes, Janette

184

"This english writing thing": students' perceptions of their writing experiences at an english-medium university  

OpenAIRE

This article explores five students’ perceptions of their writing experiences at an English-medium post-graduate university in a non-English speaking country as compared to writing in their home country universities in their native languages. Three types of differences are found to be relevant: language and rhetorical differences, disciplinary differences, and differences in educational systems (such as the number of assignments required, the focus of writing instruction, and feedback...

Petri, Bojana

2007-01-01

185

Designing Cancer-Killing Artificial Viruses to Improve Student Understanding of Microbiology  

Directory of Open Access Journals (Sweden)

Full Text Available Our objective was to assess the effectiveness of a “learning by designing” group project used in a lower-division Microbiology course. Students used knowledge gained from the course to design an artificial virus that would kill cancer cells. The assignment required groups to integrate the individual course topics into a unified, complex understanding of the field of microbiology. Throughout the course, students and the instructor collaborated in creating a rubric to evaluate the groups’ final presentations. This paper reports the results of an assessment of the project by comparing the instructor’s and the students’ scores for the presentations. Students’ and the instructor’s scores were correlated; the Pearson coefficient of 0.52 was statistically significant. The results indicate that students gained sufficient knowledge to accurately evaluate proposed designs. Additionally, the overall course grade distribution improved compared to the semester before the project was introduced. Finally, in order to engage students in thinking about their own learning process, they completed a reflection assignment that required them to discuss the changes in their understanding of microbiology over the course of the semester. Our assessment indicates that a design project can serve as an effective and useful learning technique in undergraduate Microbiology courses, though modifications are suggested.?

Andy Kuniyuki

2011-09-01

186

Designing cancer-killing artificial viruses to improve student understanding of microbiology.  

Science.gov (United States)

Our objective was to assess the effectiveness of a "learning by designing" group project used in a lower-division Microbiology course. Students used knowledge gained from the course to design an artificial virus that would kill cancer cells. The assignment required groups to integrate the individual course topics into a unified, complex understanding of the field of microbiology. Throughout the course, students and the instructor collaborated in creating a rubric to evaluate the groups' final presentations. This paper reports the results of an assessment of the project by comparing the instructor's and the students' scores for the presentations. Students' and the instructor's scores were correlated; the Pearson coefficient of 0.52 was statistically significant. The results indicate that students gained sufficient knowledge to accurately evaluate proposed designs. Additionally, the overall course grade distribution improved compared to the semester before the project was introduced. Finally, in order to engage students in thinking about their own learning process, they completed a reflection assignment that required them to discuss the changes in their understanding of microbiology over the course of the semester. Our assessment indicates that a design project can serve as an effective and useful learning technique in undergraduate Microbiology courses, though modifications are suggested. PMID:23653757

Kuniyuki, Andy; Sharp, Gwen

2011-01-01

187

Dynamic Assignment in Microsimulations of Pedestrians  

CERN Document Server

A generic method for dynamic assignment used with microsimulation of pedestrian dynamics is introduced. As pedestrians - unlike vehicles - do not move on a network, but on areas they in principle can choose among an infinite number of routes. To apply assignment algorithms one has to select for each OD pair a finite (realistically a small) number of relevant representatives from these routes. This geometric task is the main focus of this contribution. The main task is to find for an OD pair the relevant routes to be used with common assignment methods. The method is demonstrated for one single OD pair and exemplified with an example.

Kretz, Tobias; Hofsäß, Ingmar; Leonhardt, Axel

2014-01-01

188

Lurking on the Internet: A Small-Group Assignment that Puts a Human Face on Psychopathology  

Science.gov (United States)

Lurking on the Internet aims to put a human face on psychopathology for the abnormal psychology course. Student groups are assigned major diagnostic categories and instructed to search the Internet for discussion forums, individual blogs, or YouTube videos where affected individuals discuss their symptoms and lives. After discussing the ethics of…

Lowman, Joseph; Judge, Abigail M.; Wiss, Charles

2010-01-01

189

Complete Proton and Carbon Assignment of Triclosan via One- and Two- Dimensional Nuclear Magnetic Resonance Analysis  

Science.gov (United States)

Students from an upper-division undergraduate spectroscopy class analyzed one- and two-dimensional 400 MHz NMR spectroscopic data from triclosan in CDCl3. Guided assignment of all proton and carbon signals was completed via 1D proton and carbon, nuclear Overhauser effect (nOe), distortionless enhanc...

190

My Program Is Ok--Am I? Computing Freshmen's Experiences of Doing Programming Assignments  

Science.gov (United States)

This article provides insight into how computing majors experience the process of doing programming assignments in their first programming course. This grounded theory study sheds light on the various processes and contexts through which students constantly assess their self-efficacy as a programmer. The data consists of a series of four…

Kinnunen, Paivi; Simon, Beth

2012-01-01

191

Application of Calibrated Peer Review (CPR) Writing Assignments to Enhance Experiments with an Environmental Chemistry Focus  

Science.gov (United States)

The browser-based software program, Calibrated Peer Review (CPR) developed by the Molecular Science Project enables instructors to create structured writing assignments in which students learn by writing and reading for content. Though the CPR project covers only one experiment in general chemistry, it might provide lab instructors with a method…

Margerum, Lawrence D.; Gulsrud, Maren; Manlapez, Ronald; Rebong, Rachelle; Love, Austin

2007-01-01

192

How Assigned Faculty Mentors View Their Mentoring Relationships: An Interview Study of Mentors in Medical Education  

Science.gov (United States)

This qualitative study of 29 physician mentors reports their perspectives on mentoring medical students in a well-respected medical school's formal, assigned, longitudinal mentoring program that has a curricular component in the second year. Using a phenomenologic inductive approach, common themes identified centered on mentors' relationships with…

Dobie, Sharon; Smith, Sherilyn; Robins, Lynne

2010-01-01

193

From Mini- to Maxi- for Student Teaching Field Experience  

Science.gov (United States)

This program is based on the theory that students in education need early exposure to the classroom and is designed so that the student progresses through the professional education sequence receiving progressively more complex assignments. (JD)

Bultman, James; Dirkse, Lamont

1977-01-01

194

Computational Assignment of Chemical Shifts for Protein Residues  

CERN Document Server

Fast and accurate protein structure prediction is one of the major challenges in structural biology, biotechnology and molecular biomedicine. These fields require 3D protein structures for rational design of proteins with improved or novel properties. X-ray crystallography is the most common approach even with its low success rate, but lately NMR based approaches have gained popularity. The general approach involves a set of distance restraints used to guide a structure prediction, but simple NMR triple-resonance experiments often provide enough structural information to predict the structure of small proteins. Previous protein folding simulations that have utilised experimental data have weighted the experimental data and physical force field terms more or less arbitrarily, and the method is thus not generally applicable to new proteins. Furthermore a complete and near error-free assignment of chemical shifts obtained by the NMR experiments is needed, due to the static, or deterministic, assignment. In this ...

Bratholm, Lars A

2013-01-01

195

Occupational Code Assignment System (CodeSearch)  

Science.gov (United States)

The Codesearch System is a PC-based system which provides users with an interactive method for assigning standardized industry and occupation codes to related job description titles from specific studies.

196

Reading assignment 10 - Linguistics 8806 (group 3)  

OpenAIRE

Reading assignment 10 - PART II. AN INTRODUCTION TO THE HISTORY OF LINGUISTICS. Key topic: Nineteenth-century linguistics: Historical linguistics. Academic year 2009-2010 (Course credits: 12 (15 ECTS)).

Mun?oz Baell, Irma Mari?a

2010-01-01

197

Reading assignment 01 - Linguistics 8806 (group 3)  

OpenAIRE

Reading assignment 01 - PART I. BEGINNING LINGUISTICS: AN INTRODUCTION TO THE STUDY OF LANGUAGE. Key topic: Examining popular ideas about language further. Academic year 2009-2010 (Course credits: 12 (15 ECTS)).

Mun?oz Baell, Irma Mari?a

2010-01-01

198

Reading assignment 03 - Linguistics 8806 (group 3)  

OpenAIRE

Reading assignment 03 - PART I. BEGINNING LINGUISTICS: AN INTRODUCTION TO THE STUDY OF LANGUAGE. Key topic: Prescription vs. Description: Prescriptive vs. Descriptive Rules of Grammar. Academic year 2009-2010 (Course credits: 12 (15 ECTS)).

Mun?oz Baell, Irma Mari?a

2010-01-01

199

7 CFR 601.1 - Functions assigned.  

Science.gov (United States)

... (f) NRCS has general responsibility for administration of the...Federal agencies, land grant universities, State agencies, and local...environmental, economic, and social needs of an area. (4...Program (RAMP) and other responsibilities assigned under the...

2010-01-01

200

Tableaux for Dynamic Logic of Propositional Assignments  

OpenAIRE

The Dynamic Logic for Propositional Assignments (DL-PA) has recently been studied as an alternative to Propositional Dynamic Logic (PDL). In DL-PA, the abstract atomic programs of PDL are replaced by assignments of propositional variables to truth values. This makes DL-PA enjoy some interesting meta-logical properties that PDL does not, such as eliminability of the Kleene star, compactness and interpolation. We define and analytic tableaux calculus for DL-PA and show that it...

Lima, Tiago; Herzig, Andreas

2014-01-01

201

Weapon Target Assignment with Combinatorial Optimization Techniques  

OpenAIRE

Weapon Target Assignment (WTA) is the assignment of friendly weapons to the hostile targets in order to protect friendly assets or destroy the hostile targets and considered as a NP-complete problem. Thus, it is very hard to solve it for real time or near-real time operational needs. In this study, genetic algorithm (GA), tabu search (TS), simulated annealing (SA) and Variable Neighborhood Search (VNS) combinatorial optimization techniques are applied to the WTA problem and their results are ...

Asim Tokgöz; Serol Bulkan

2013-01-01

202

Undergraduate students’ information search practices  

Directory of Open Access Journals (Sweden)

Full Text Available This paper investigates undergraduate students’ information search practices.The subjects were 250 undergraduate students from two university departments in Greece, and a questionnaire was used to document their search practices. The results showed that the Web was the primary information system searched in order to findinformation for university assignments, while the level of database searching was verylow. In particular, the search engine Google was used very frequently either foruniversity assignments or for personal purposes. Regarding students’ practices inevaluating Web?based information, the top criteria reported were ‘relevance ofinformation’ and ‘easy to understand’. Students’ self?efficacy concerning Web?searchingwas found to be high and positively related to the variables ‘frequency of Web use’ and‘years of internet use’. Implications for students’ training are discussed. Students’ search behaviour needs to be expanded beyond the Web search engines, to include a wider range of information retrieval systems.

Kleopatra Nikolopoulou

2011-01-01

203

7 CFR 273.5 - Students.  

Science.gov (United States)

...becomes known that the student has refused an assignment...longer unless the student is participating...in an on-the-job training program...in an on-the-job training program only during the period of time the person is being...available to enable the student to attend class...

2010-01-01

204

Developing a Research Tool to Gauge Student Metacognition  

Science.gov (United States)

Metacognition refers to the family of thought processes and skills used to evaluate and manage learning. A research and curriculum development project underway at Western Washington University uses introductory physics labs as a context to promote students' abilities to learn and apply metacognitive skills. A required ``narrative reflection'' has been incorporated as a weekly end-of-lab assignment. The goal of the narrative reflection is to encourage and support student metacognition while generating written artifacts that can be used by researchers to study metacognition in action. We have developed a Reflective Thinking Rubric (RTR) to analyze scanned narrative reflections. The RTR codes student writing for Metacognitive Elements, identifiable steps or aspects of metacognitive thinking at a variety of levels of sophistication. We hope to use the RTR to monitor the effect of weekly reflection on metacognitive ability and to search for correlations between metacognitive ability and conceptual understanding.

McInerny, Alistair; Boudreaux, Andrew; Rishal, Sepideh; Clare, Kelci

2012-10-01

205

Design, analysis and evaluation of routing and channel assignment algorithms for wireless mesh networks  

OpenAIRE

In this thesis we describe the efforts we made for designing, developing and analyzing new routing and channel assignment algorithms for wireless mesh networks. In particular we discuss about a new channel re-assignment scheme, able to minimize the number of changes required to accomodate new traffic demands, a new MPLS-based forwarding paradigm, resistant to failures and able to cope with variations of the traffic demands and, finally, a new forwarding paradigm able to exp...

Di Stasi, Giovanni

2011-01-01

206

A multiobjective approach towards weapon assignment in a ground-based air defence environment  

OpenAIRE

A typical ground-based air defence (GBAD) environment comprises defended assets on the ground which require protection from enemy aircraft entering the defended airspace. Protection against these aircraft is afforded by means of pre-deployed ground-based weapon systems that are assigned to engage these enemy aircraft according to some pre-specified criterion or set of criteria. The conditions under which human operators have to propose assignments of weapon systems to engage these aircraft ar...

Dp, Lo?tter; Nieuwoudt, I.; Jh, Vuuren

2013-01-01

207

Kickback cuts Backprop's red-tape: Biologically plausible credit assignment in neural networks  

OpenAIRE

Error backpropagation is an extremely effective algorithm for assigning credit in artificial neural networks. However, weight updates under Backprop depend on lengthy recursive computations and require separate output and error messages -- features not shared by biological neurons, that are perhaps unnecessary. In this paper, we revisit Backprop and the credit assignment problem. We first decompose Backprop into a collection of interacting learning algorithms; provide regret...

Balduzzi, David; Vanchinathan, Hastagiri; Buhmann, Joachim

2014-01-01

208

Protein secondary structure assignment revisited: a detailed analysis of different assignment methods  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background A number of methods are now available to perform automatic assignment of periodic secondary structures from atomic coordinates, based on different characteristics of the secondary structures. In general these methods exhibit a broad consensus as to the location of most helix and strand core segments in protein structures. However the termini of the segments are often ill-defined and it is difficult to decide unambiguously which residues at the edge of the segments have to be included. In addition, there is a "twilight zone" where secondary structure segments depart significantly from the idealized models of Pauling and Corey. For these segments, one has to decide whether the observed structural variations are merely distorsions or whether they constitute a break in the secondary structure. Methods To address these problems, we have developed a method for secondary structure assignment, called KAKSI. Assignments made by KAKSI are compared with assignments given by DSSP, STRIDE, XTLSSTR, PSEA and SECSTR, as well as secondary structures found in PDB files, on 4 datasets (X-ray structures with different resolution range, NMR structures. Results A detailed comparison of KAKSI assignments with those of STRIDE and PSEA reveals that KAKSI assigns slightly longer helices and strands than STRIDE in case of one-to-one correspondence between the segments. However, KAKSI tends also to favor the assignment of several short helices when STRIDE and PSEA assign longer, kinked, helices. Helices assigned by KAKSI have geometrical characteristics close to those described in the PDB. They are more linear than helices assigned by other methods. The same tendency to split long segments is observed for strands, although less systematically. We present a number of cases of secondary structure assignments that illustrate this behavior. Conclusion Our method provides valuable assignments which favor the regularity of secondary structure segments.

de Brevern Alexandre G

2005-09-01

209

Performance in the Citing Behavior of Two Student Writers  

Science.gov (United States)

This article reports the results of an interview-based study which investigated the citation behavior in the assignment writing of two second-language postgraduate business management students, Sofie and Tara. Discourse-based interviews were used to elicit the students' own perspectives on their citation behavior in two of their assignments.…

Harwood, Nigel; Petric, Bojana

2012-01-01

210

Systematic assignment of thermodynamic constraints in metabolic network models  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background The availability of genome sequences for many organisms enabled the reconstruction of several genome-scale metabolic network models. Currently, significant efforts are put into the automated reconstruction of such models. For this, several computational tools have been developed that particularly assist in identifying and compiling the organism-specific lists of metabolic reactions. In contrast, the last step of the model reconstruction process, which is the definition of the thermodynamic constraints in terms of reaction directionalities, still needs to be done manually. No computational method exists that allows for an automated and systematic assignment of reaction directions in genome-scale models. Results We present an algorithm that – based on thermodynamics, network topology and heuristic rules – automatically assigns reaction directions in metabolic models such that the reaction network is thermodynamically feasible with respect to the production of energy equivalents. It first exploits all available experimentally derived Gibbs energies of formation to identify irreversible reactions. As these thermodynamic data are not available for all metabolites, in a next step, further reaction directions are assigned on the basis of network topology considerations and thermodynamics-based heuristic rules. Briefly, the algorithm identifies reaction subsets from the metabolic network that are able to convert low-energy co-substrates into their high-energy counterparts and thus net produce energy. Our algorithm aims at disabling such thermodynamically infeasible cyclic operation of reaction subnetworks by assigning reaction directions based on a set of thermodynamics-derived heuristic rules. We demonstrate our algorithm on a genome-scale metabolic model of E. coli. The introduced systematic direction assignment yielded 130 irreversible reactions (out of 920 total reactions, which corresponds to about 70% of all irreversible reactions that are required to disable thermodynamically infeasible energy production. Conclusion Although not being fully comprehensive, our algorithm for systematic reaction direction assignment could define a significant number of irreversible reactions automatically with low computational effort. We envision that the presented algorithm is a valuable part of a computational framework that assists the automated reconstruction of genome-scale metabolic models.

Heinemann Matthias

2006-11-01

211

25 CFR 166.229 - Other than to remove land, how can a permit be amended, assigned, subpermitted, or mortgaged?  

Science.gov (United States)

... 1 2010-04-01 2010-04-01 false Other than to remove land, how can a permit be amended, assigned, subpermitted...Requirements Modifying A Permit § 166.229 Other than to remove land, how can a permit be amended, assigned,...

2010-04-01

212

Evaluation of Dynamic Channel and Power Assignment for Cognitive Networks  

Energy Technology Data Exchange (ETDEWEB)

In this paper, we develop a unifying optimization formulation to describe the Dynamic Channel and Power Assignment (DCPA) problem and evaluation method for comparing DCPA algorithms. DCPA refers to the allocation of transmit power and frequency channels to links in a cognitive network so as to maximize the total number of feasible links while minimizing the aggregate transmit power. We apply our evaluation method to five algorithms representative of DCPA used in literature. This comparison illustrates the tradeoffs between control modes (centralized versus distributed) and channel/power assignment techniques. We estimate the complexity of each algorithm. Through simulations, we evaluate the effectiveness of the algorithms in achieving feasible link allocations in the network, as well as their power efficiency. Our results indicate that, when few channels are available, the effectiveness of all algorithms is comparable and thus the one with smallest complexity should be selected. The Least Interfering Channel and Iterative Power Assignment (LICIPA) algorithm does not require cross-link gain information, has the overall lowest run time, and highest feasibility ratio of all the distributed algorithms; however, this comes at a cost of higher average power per link.

Syed A. Ahmad; Umesh Shukla; Ryan E. Irwin; Luiz A. DaSilva; Allen B. MacKenzie

2011-03-01

213

A Framework for Participatory Science in High Schools that Supports Useful Scientific Research as Well as Student Learning: Requirements and Constraints  

Science.gov (United States)

For the past five years the Schoodic Education and Research Center (SERC) Institute, located at Acadia National Park, has collaborated with the Senator George J. Mitchell Center for Environmental and Watershed Research and Maine Sea Grant at the University of Maine to engage high school teachers and students in field work to collect samples and data used in a study of spatial patterns of mercury (Hg) and methylmercury (MeHg) across the northeastern US. This program's success in producing useful scientific research data at the same time that it achieves formal science education outcomes has resulted in new funding for both the scientific work and the education work. SERC Institute and the Mitchell Center have recently used the pedagogical and scientific framework underlying this work to address new research related to seasonal variation in nitrogen in watersheds, demonstrating that the framework has applicability beyond studies of Hg. This paper summarizes the core elements of the framework and reports on new research into student learning and teacher professional development that is essential to the success of this kind of participatory science. Specifically, this paper describes (1) approaches to structuring research designs to ensure that data collected by students is scientifically useful; (2) the need to assist teachers in supporting a research focus by students that differs from the research undertaken by working scientists; (3) pedagogical strategies to support this student research; (4) mechanisms to support peer review and publication of student research, creating over time a body of student work that supports new student research and that is a potentially useful resource for others; and (5) new research data related to student ability to use and make sense of the data that they collect. By connecting data on student data literacy with data collected from assessments of teacher content knowledge and pedagogical content knowledge, we are able to identify implications for teacher professional development. We conclude with a brief qualitative summary of our experiences with offering such professional development and a discussion of "next steps" emerging from these experiences.

Zoellick, B.; Nelson, S. J.; Bisson, B.; Schauffler, M.; Webber, H.

2011-12-01

214

DRUG REGULATORY STATUS ASSIGNMENT CRITERIA: A CONTRAST AMONG 2 COUNTRIES  

OpenAIRE

After a laborious and extravagant procedure the drug finally enters the market for use. But who determines the new drug status as a prescription only or an OTC? There is a clear cut contrast between the US and India with respect to their assignment guidelines and the future prospect of a new drug. In the US the regulatory status of the approved drug is determined as per the FDA guidelines (FDCA of 1938) in accordance with the Durham-Humphrey act of 1951 which depicts the criteria required for...

Anoop Paruchuri, Vini Pavithran

2013-01-01

215

Harnessing Students' Interest in Physics with Their Own Video Games  

Science.gov (United States)

Many physics teachers assign projects where students are asked to measure real-world motion. One purpose of this student-centered activity is to cultivate the relevance of physics in their lives. Typical project topics may include measuring the speed of a student's fastball and calculating how much reaction time batters are given. Another student

Like, Christopher

2011-01-01

216

A Method of Using Student Evaluation in the Basic [Speech] Course.  

Science.gov (United States)

Student input into grading in the basic speech communication course can be accomplished through a peer evaluation system. Three student evaluators are assigned for every student speech. Speeches are given a quality score by the peer evaluators and by the instructor. Rating errors are minimized by assigning peer evaluators so that no…

Zeman, James V.

217

Required High School Internships  

Science.gov (United States)

Through a literature review, and in the words of internees, this article describes the value of required internship for career growth. It notes that an internship experience ensures that students have a mentor who can be a professional reference, having actually witnessed what Mojkowski and Washor call the students' "non-academic"…

Graham, Kate; Morrow, Jennifer

2013-01-01

218

Online Student Learning and Earth System Processes  

Science.gov (United States)

Many students have difficulty understanding dynamical processes related to Earth's climate system. This is particularly true in Earth System Science courses designed for non-majors. It is often tempting to gloss over these conceptually difficult topics and have students spend more study time learning factual information or ideas that require rather simple linear thought processes. Even when the professor is ambitious and tackles the more difficult ideas of system dynamics in such courses, they are typically greeted with frustration and limited success. However, an understanding of generic system concepts and processes is quite arguably an essential component of any quality liberal arts education. We present online student-centered learning modules that are designed to help students explore different aspects of Earth's climate system (see http://www.cs.clark.edu/mac/physlets/GlobalPollution/maintrace.htm for a sample activity). The JAVA based learning activities are designed to: be assessable to anyone with Web access; be self-paced, engaging, and hands-on; and make use of past results from science education research. Professors can use module activities to supplement lecture, as controlled-learning-lab activities, or as stand-alone homework assignments. Acknowledgement This work was supported by NASA Office of Space Science contract NASW-98037, Atmospheric and Environmental Research Inc. of Lexington, MA., and Clark College.

Mackay, R. M.

2002-12-01

219

Fixed Channel Assignment and Neural Network Algorithm for Channel Assignment Problem in Cellular Radio Networks  

Directory of Open Access Journals (Sweden)

Full Text Available The channel-assignment problem is important in mobile telephone communication. Since the usable range of the frequency spectrum is limited, the optimal channel-assignment problem has become increasingly important. The goal of this problem is to find a channel assignment to requested calls with the minimum number of channels subject to interference constraints between channels. This algorithm consists of: 1 the fixed channel assignment stage; 2 the neural network stage. In the first stage, the calls in a cell determining the lower bound on the total number of channels are assigned channels at regular intervals, then the calls in adjacent six cells are assigned channels by a cluster heuristic method sequentially. In the second stage, the calls in the remaining cells are assigned channels by a binary neural network. The performance is verified through solving well-known benchmark problems. Especially for Sivarajan’s benchmark problems, my algorithm first achieves the lower bound solutions in all of the 12 instances.

Omid Moradi

2010-10-01

220

Investigating the relationship between quality, format and delivery of feedback for written assignments in higher education  

DEFF Research Database (Denmark)

Feedback can have a great impact on student learning. However, in order for it to be effective, feedback needs to be of high quality. Electronic marking has been one of the latest adaptations of technology in teaching and offers a new format of delivering feedback. There is little research investigating the impact the format of feedback has on quality of feedback and subsequently on student learning. This study sets out to investigate the impact paper-based and electronic methods of assignment submission and return have on students’ and markers’ perceived quality of feedback. Students and markers on an undergraduate course were asked to complete an anonymous online survey investigating their perceptions of quality, format and timeliness of feedback delivered electronically and on paper. The results showed that marking and providing feedback electronically was an acceptable method for markers, reporting improved speed and consistency of marking. There was no increase or decrease in satisfaction with the feedback received. Overall, electronic marking was found to be an acceptable method of delivery of feedback on written assignments by both students and markers. The findings of this study suggest that electronic marking can result in more timely feedback for students without impacting on quality.

Sopina, Liza Elizaveta; McNeill, Rob

2015-01-01

221

Principales elementos de contenido y forma para elaborar un proyecto de revista científica electrónica estudiantil / Main form and content elements required to develop a student electronic scientific journal project  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: muchas investigaciones estudiantiles nunca llegan a publicarse por la escasez de medios y de espacios académicos que guíen a los estudiantes en la preparación y producción correcta de sus manuscritos. Objetivos: caracterizar las revista científicas estudiantiles electrónicas de Ciencia [...] s Médicas y conformar una matriz con los principales elementos de contenido y forma que sirva como referente para elaborar un proyecto de revista. Métodos: se realizó un estudio descriptivo que abarcó a las revistas científicas estudiantiles electrónicas de Ciencias Médicas creadas hasta el año 2009, producidas por instituciones educativas. Se analizaron variables generales y de contenido y forma tales como: cobertura regional, idioma, periodicidad, formato de presentación, usuarios/lectores, secciones, recursos multimedia, modelos de licencia y servicios de valor añadido. Resultados: del total de 50 revistas revisadas, 68 % pertenecían a Latinoamérica y el Caribe. A partir de los años 90, se encontró una tendencia ascendente (p = 0,018) en la producción de revistas estudiantiles. Por su contenido y forma se destacaron entre las publicaciones analizadas: Asian Student Medical Journal, regional;Global Pulse: American Medical Student Association´s International HealthJournal, de Estados Unidos, y "16 de Abril", de Cuba. Conclusiones: existe una tendencia ascendente hacia el crecimiento en la producción de revistas científicas electrónicas estudiantiles de Ciencias Médicas, particularmente en el área de Latinoamérica y el Caribe. En las publicaciones analizadas, la distribución de los contenidos y la forma es variada y singular en algunas, aunque pocas hacen un uso adecuado de los recursos multimedia y los servicios de valor añadido. Los elementos identificados permiten conformar una matriz que sirve como referente para determinar los principales elementos de contenido y forma que debe contemplar una revista científica electrónica estudiantil, con apego a las normas internacionales para este tipo de publicaciones. Abstract in english Introduction: many student research studies never come to be published due to shortage of means or academic spaces where students can prepare and appropriately produce their manuscripts. Objective: characterize student electronic scientific journals of medical sciences and create a matrix containing [...] the main form and content elements required to develop a journal project. Method: a descriptive study was conducted of the student electronic scientific journals of medical sciences produced by educational institutions until the year 2009. The following general and content and form variables were analyzed: regional coverage, language, periodicity, layout, users/readers, sections, multimedia resources, license models and added value services. Results: of the 50 journals reviewed, 68 % were from Latin America and the Caribbean. A trend toward an increase in the number of student journals produced was observed from the 1990s onwards (p = 0,018). The following journals stood out for their content and form: Asian Student Medical Journal, regional; Global Pulse: American Medical Student Association's International Health Journal, from the United States, and "16 de Abril", from Cuba. Conclusions: a trend toward an increase in the number of student electronic scientific journals of medical sciences was observed, particularly in Latin America and the Caribbean. The distribution of contents and formal traits is varied in the journals analyzed, and it is unique in some of them. However, few journals make appropriate use of multimedia resources and added value services. The elements identified made it possible to create a reference matrix to determine the main form and content elements required by student electronic scientific journals, according to international standards for this type of publication.

Mayreth, González-Peña; María, Espino Hernández.

2014-06-01

222

A Markov Random Field Framework for Protein Side-Chain Resonance Assignment  

Science.gov (United States)

Nuclear magnetic resonance (NMR) spectroscopy plays a critical role in structural genomics, and serves as a primary tool for determining protein structures, dynamics and interactions in physiologically-relevant solution conditions. The current speed of protein structure determination via NMR is limited by the lengthy time required in resonance assignment, which maps spectral peaks to specific atoms and residues in the primary sequence. Although numerous algorithms have been developed to address the backbone resonance assignment problem [68,2,10,37,14,64,1,31,60], little work has been done to automate side-chain resonance assignment [43, 48, 5]. Most previous attempts in assigning side-chain resonances depend on a set of NMR experiments that record through-bond interactions with side-chain protons for each residue. Unfortunately, these NMR experiments have low sensitivity and limited performance on large proteins, which makes it difficult to obtain enough side-chain resonance assignments. On the other hand, it is essential to obtain almost all of the side-chain resonance assignments as a prerequisite for high-resolution structure determination. To overcome this deficiency, we present a novel side-chain resonance assignment algorithm based on alternative NMR experiments measuring through-space interactions between protons in the protein, which also provide crucial distance restraints and are normally required in high-resolution structure determination. We cast the side-chain resonance assignment problem into a Markov Random Field (MRF) framework, and extend and apply combinatorial protein design algorithms to compute the optimal solution that best interprets the NMR data. Our MRF framework captures the contact map information of the protein derived from NMR spectra, and exploits the structural information available from the backbone conformations determined by orientational restraints and a set of discretized side-chain conformations (i.e., rotamers). A Hausdorff-based computation is employed in the scoring function to evaluate the probability of side-chain resonance assignments to generate the observed NMR spectra. The complexity of the assignment problem is first reduced by using a dead-end elimination (DEE) algorithm, which prunes side-chain resonance assignments that are provably not part of the optimal solution. Then an A* search algorithm is used to find a set of optimal side-chain resonance assignments that best fit the NMR data. We have tested our algorithm on NMR data for five proteins, including the FF Domain 2 of human transcription elongation factor CA150 (FF2), the B1 domain of Protein G (GB1), human ubiquitin, the ubiquitin-binding zinc finger domain of the human Y-family DNA polymerase Eta (pol ? UBZ), and the human Set2-Rpb1 interacting domain (hSRI). Our algorithm assigns resonances for more than 90% of the protons in the proteins, and achieves about 80% correct side-chain resonance assignments. The final structures computed using distance restraints resulting from the set of assigned side-chain resonances have backbone RMSD 0.5 - 1.4 Å and all-heavy-atom RMSD 1.0 - 2.2 Å from the reference structures that were determined by X-ray crystallography or traditional NMR approaches. These results demonstrate that our algorithm can be successfully applied to automate side-chain resonance assignment and high-quality protein structure determination. Since our algorithm does not require any specific NMR experiments for measuring the through-bond interactions with side-chain protons, it can save a significant amount of both experimental cost and spectrometer time, and hence accelerate the NMR structure determination process.

Zeng, Jianyang; Zhou, Pei; Donald, Bruce Randall

223

Models of organizational-pedagogical terms of physical education of students of I-IV of courses.  

Directory of Open Access Journals (Sweden)

Full Text Available The article presents a model of organizational-pedagogical conditions of physical education students I-IV courses and made an analysis of problems of physical education students, which relate to the organization and content of the educational process in relation to problems of professional-applied physical training and motivation for physical perfection of youth. It is proposed the basic requirements for a model of physical education. It is developed a new structure of the Department of Physical Education, which includes its divisions and refined assignments of each structural unit.

Turchina N.I.

2011-05-01

224

Teacher stories of blame when assigning a failing grade.  

Science.gov (United States)

Nurse educators are required to routinely evaluate students. While there is a plethora of information in the educational literature about how to write exams, develop rubrics, or evaluate clinical performance, there is a paucity of research related to teachers' experiences of evaluation. Using a Heideggerian hermeneutical approach, this study sought to answer: (1) what are the experiences of nurse educators evaluating nursing students? and (2) what do these evaluative experiences mean to the nurse educator? Thirty nurse educators from 19 undergraduate programs were interviewed for this study. Implications for nurse educators are discussed. PMID:24736867

Poorman, Susan G; Mastorovich, Melissa L

2014-01-01

225

Students-Teach-Students.  

Science.gov (United States)

Students-Teach-Students is a program that trains teams of high school students to present a smoking education program and role-model to fifth graders, helping them to overcome peer pressure to smoke cigarettes and marijuana. Surveys show that a significant percentage of students first begin to experiment with smoking cigarettes and marijuana…

Tokarz, Edward, Jr.; Sullivan, Richard D.

226

Vietnamese Students Employability Skills  

OpenAIRE

This paper attempts to investigate if the International University (IU) students’ core competencies can meet the requirements set by employers, what are the differences in core competencies in final year students (or undergraduates), and how they view themselves compared with ex-students after one or two years in working environment, how differences in levels of competencies which are expected to outperform the job expectations and competencies possessed by ex-students, and any differenc...

Nguyen Minh Tuan

2011-01-01

227

Using rule-based shot dose assignment in model-based MPC applications  

Science.gov (United States)

Shrinking feature sizes and the need for tighter CD (Critical Dimension) control require the introduction of new technologies in mask making processes. One of those methods is the dose assignment of individual shots on VSB (Variable Shaped Beam) mask writers to compensate CD non-linearity effects and improve dose edge slope. Using increased dose levels only for most critical features, generally only for the smallest CDs on a mask, the change in mask write time is minimal while the increase in image quality can be significant. This paper describes a method combining rule-based shot dose assignment with model-based shot size correction. This combination proves to be very efficient in correcting mask linearity errors while also improving dose edge slope of small features. Shot dose assignment is based on tables assigning certain dose levels to a range of feature sizes. The dose to feature size assignment is derived from mask measurements in such a way that shape corrections are kept to a minimum. For example, if a 50nm drawn line on mask results in a 45nm chrome line using nominal dose, a dose level is chosen which is closest to getting the line back on target. Since CD non-linearity is different for lines, line-ends and contacts, different tables are generated for the different shape categories. The actual dose assignment is done via DRC rules in a pre-processing step before executing the shape correction in the MPC engine. Dose assignment to line ends can be restricted to critical line/space dimensions since it might not be required for all line ends. In addition, adding dose assignment to a wide range of line ends might increase shot count which is undesirable. The dose assignment algorithm is very flexible and can be adjusted based on the type of layer and the best balance between accuracy and shot count. These methods can be optimized for the number of dose levels available for specific mask writers. The MPC engine now needs to be able to handle different dose levels and requires a model which accurately predicts mask shapes at all dose levels used. The calibration of such a model is described in a separate paper [1]. In summary this paper presents an efficient method for combining rule-based VSB shot dose assignment with modelbased shape corrections in MPC. This method expands the printability of small features sizes without the need for increasing the base dose of the e-beam writer which reduces backscattering and increases the lifetime of the electron gun of the writer.

Bork, Ingo; Buck, Peter; Wang, Lin; Müller, Uwe

2014-10-01

228

Expatriate assignments; The influence of the accompanying family on the perceived outcome of international assignments  

OpenAIRE

Abstract This Master´s thesis examines the factors that affect the adjustment of expatriate families and the influence of the accompanying family on the perceived outcome of expatriate assignments. Due to increased competition and the need to rely on the knowledge of its human capital, companies are sending expatriates abroad to complete international assignments. In many cases, the family accompanies the expatriate manager abroad, which entails that the entire family needs to...

Vitasovic, Mila

2012-01-01

229

An Abnormal Psychology Community Based Interview Assignment  

Science.gov (United States)

A course option in abnormal psychology involves students in interviewing and observing the activities of individuals in the off-campus community who are concerned with some aspect of abnormal psychology. The technique generates student interest in the field when they interview people about topics such as drug abuse, transsexualism, and abuse of…

White, Geoffry D.

1977-01-01

230

Understanding student computational thinking with computational modeling  

Science.gov (United States)

Recently, the National Research Council's framework for next generation science standards highlighted "computational thinking" as one of its "fundamental practices". 9th Grade students taking a physics course that employed the Arizona State University's Modeling Instruction curriculum were taught to construct computational models of physical systems. Student computational thinking was assessed using a proctored programming assignment, written essay, and a series of think-aloud interviews, where the students produced and discussed a computational model of a baseball in motion via a high-level programming environment (VPython). Roughly a third of the students in the study were successful in completing the programming assignment. Student success on this assessment was tied to how students synthesized their knowledge of physics and computation. On the essay and interview assessments, students displayed unique views of the relationship between force and motion; those who spoke of this relationship in causal (rather than observational) terms tended to have more success in the programming exercise.

Aiken, John M.; Caballero, Marcos D.; Douglas, Scott S.; Burk, John B.; Scanlon, Erin M.; Thoms, Brian D.; Schatz, Michael F.

2013-01-01

231

Understanding Student Computational Thinking with Computational Modeling  

CERN Document Server

Recently, the National Research Council's framework for next generation science standards highlighted "computational thinking" as one of its "fundamental practices". Students taking a physics course that employed the Arizona State University's Modeling Instruction curriculum were taught to construct computational models of physical systems. Student computational thinking was assessed using a proctored programming assignment, written essay, and a series of think-aloud interviews, where the students produced and discussed a computational model of a baseball in motion via a high-level programming environment (VPython). Roughly a third of the students in the study were successful in completing the programming assignment. Student success on this assessment was tied to how students synthesized their knowledge of physics and computation. On the essay and interview assessments, students displayed unique views of the relationship between force and motion; those who spoke of this relationship in causal (rather than obs...

Aiken, John M; Douglas, Scott S; Burk, John B; Scanlon, Erin M; Thoms, Brian D; Schatz, Michael F

2012-01-01

232

Weapon Target Assignment with Combinatorial Optimization Techniques  

Directory of Open Access Journals (Sweden)

Full Text Available Weapon Target Assignment (WTA is the assignment of friendly weapons to the hostile targets in order to protect friendly assets or destroy the hostile targets and considered as a NP-complete problem. Thus, it is very hard to solve it for real time or near-real time operational needs. In this study, genetic algorithm (GA, tabu search (TS, simulated annealing (SA and Variable Neighborhood Search (VNS combinatorial optimization techniques are applied to the WTA problem and their results are compared with each other and also with the optimized GAMS solutions. Algorithms are tested on the large scale problem instances. It is found that all the algorithms effectively converge to the near global optimum point(s (a good quality and the efficiency of the solutions (speed of solution might be improved according to the operational needs. VNS and SA solution qualities are better than both GA and TS.

Asim Tokgöz

2013-07-01

233

Speeding up sequence specific assignment of IDPs  

Energy Technology Data Exchange (ETDEWEB)

The characterization of intrinsically disordered proteins (IDPs) by NMR spectroscopy is made difficult by the extensive spectral overlaps. To overcome the intrinsic low-resolution of the spectra the introduction of high-dimensionality experiments is essential. We present here a set of high-resolution experiments based on direct {sup 13}C-detection which proved useful in the assignment of {alpha}-synuclein, a paradigmatic IDP. In particular, we describe the implementation of 4D HCBCACON, HCCCON, HCBCANCO, 4/5D HNCACON and HNCANCO and 3/4D HCANCACO experiments, specifically tailored for spin system identification and backbone resonances sequential assignment. The use of non-uniform-sampling in the indirect dimension and of the H-flip approach to achieve longitudinal relaxation enhancement rendered the experiments very practical.

Bermel, Wolfgang [Bruker BioSpin GmbH (Germany); Bertini, Ivano, E-mail: ivanobertini@cerm.unifi.it; Felli, Isabella C.; Gonnelli, Leonardo [CERM, University of Florence (Italy); Kozminski, Wiktor [University of Warsaw, Faculty of Chemistry (Poland); Piai, Alessandro; Pierattelli, Roberta [CERM, University of Florence (Italy); Stanek, Jan [University of Warsaw, Faculty of Chemistry (Poland)

2012-08-15

234

Online Assignment Algorithms for Dynamic Bipartite Graphs  

CERN Document Server

This paper analyzes the problem of assigning weights to edges incrementally in a dynamic complete bipartite graph consisting of producer and consumer nodes. The objective is to minimize the overall cost while satisfying certain constraints. The cost and constraints are functions of attributes of the edges, nodes and online service requests. Novelty of this work is that it models real-time distributed resource allocation using an approach to solve this theoretical problem. This paper studies variants of this assignment problem where the edges, producers and consumers can disappear and reappear or their attributes can change over time. Primal-Dual algorithms are used for solving these problems and their competitive ratios are evaluated.

Sahai, Ankur

2011-01-01

235

Speeding up sequence specific assignment of IDPs  

International Nuclear Information System (INIS)

The characterization of intrinsically disordered proteins (IDPs) by NMR spectroscopy is made difficult by the extensive spectral overlaps. To overcome the intrinsic low-resolution of the spectra the introduction of high-dimensionality experiments is essential. We present here a set of high-resolution experiments based on direct 13C-detection which proved useful in the assignment of ?-synuclein, a paradigmatic IDP. In particular, we describe the implementation of 4D HCBCACON, HCCCON, HCBCANCO, 4/5D HNCACON and HNCANCO and 3/4D HCANCACO experiments, specifically tailored for spin system identification and backbone resonances sequential assignment. The use of non-uniform-sampling in the indirect dimension and of the H-flip approach to achieve longitudinal relaxation enhancement rendered the experiments very practical.

236

An Attempt to Improve Student Engagement with Class Content via a Student-produced Wiki  

Science.gov (United States)

In a freshman-level honors astronomy class, an attempt was made to use a student-produced wiki to improve student engagement and connection with the class material. This attempt was not entirely successful due to unforeseen challenges such as the assignment being too open-ended and too time consuming to grade. Despite these challenges, the wiki was successful in encouraging the students to reflect more on the class material, and to connect that material to the “real world.” While the wiki assignment that was originally attempted will not be repeated in future classes, certain portions will continue to be used to enhance student engagement.

Cobb, B. E.

2014-07-01

237

Symmetric Logic Synthesis with Phase Assignment  

OpenAIRE

Decomposition of any Boolean Function BF_n of n binary inputs into an optimal inverter coupled network of Symmetric Boolean functions SF_k (k \\leq n) is described. Each SF component is implemented by Threshold Logic Cells, forming a complete and compact T-Cell Library. Optimal phase assignment of input polarities maximizes local symmetries. The "rank spectrum" is a new BF_n description independent of input ordering, obtained by mapping its minterms onto an othogonal n \\times...

Benschop, N. F.

2001-01-01

238

ACO for the surgical cases assignment problem.  

Science.gov (United States)

This paper addresses the Surgical Case Assignment Problem with an objective of minimizing the total unexploited and operating cost. A two-stage ant colony optimization (ACO) algorithm is introduced and its performance is evaluated by comparing its solutions to the solutions of Branch and Bound and a global solver. The results show that ACO outperformed the other algorithms and reached better solutions in a faster computational time. PMID:21225322

Rizk, Charbel; Arnaout, Jean-Paul

2012-06-01

239

Case assignment by prepositions in Russian aphasia  

OpenAIRE

The present project investigated linguistic abilities of fluent and non-fluent aphasic speakers who suffer form a language disorder that usually results from a brain injury to the left hemisphere (e.g., a stroke). The project included a series of experiments to investigate case assigning abilities by prepositions of aphasic speakers of Russian – morphologically rich language which main properties make it particularly interesting for research of case. Narrative speech of non-fluent aphasic s...

Trofimova, Maria

2009-01-01

240

Distributed Spectrum Assignment for Home WLANs  

OpenAIRE

We consider the problem of jointly allocating chan- nel center frequencies and bandwidths for IEEE 802.11 wireless LANs (WLANs). The bandwidth used on a link affects sig- nificantly both the capacity experienced on this link and the interference produced on neighboring links. Therefore, when jointly assigning both center frequencies and channel widths, there is a trade-off between interference mitigation and the potential capacity offered on each link. We study this trade- off and we present ...

Herzen, Julien; Merz, Ruben; Thiran, Patrick

2013-01-01

241

CEO turnover in a competitive assignment framework  

OpenAIRE

There is considerable and widespread concern about whether CEOs are appropriately punished for poor performance. The empirical literature on CEO turnover documents that CEOs are indeed more likely to be forced out if their performance is poor relative to the industry average. However, CEOs are also more likely to be replaced if the industry is doing badly. We show that these empirical patterns are natural and efficient outcomes of a competitive assignment model in which CEOs and firms form...

Eisfeldt, Andrea; Kuhnen, Camelia M.

2010-01-01

242

Evaluating Experiential Learning in Organizational Behavior: Taking Measure of Student Perception Regarding Group Experience  

Directory of Open Access Journals (Sweden)

Full Text Available Problem statement: The purpose of this study was to determine undergraduate student perceptions in the areas of group experience within the context of an undergraduate organizational behavior business class community service assignment. College students, as part of an in-class service-learning project, were assigned to teach business related curriculum to at-risk high school students. Approach: Students, enrolled in the required senior level business course, were then assessed in the following areas: service learning experience and group experience. A multiple-choice questionnaire was administered to undergraduate students in an organizational and administrative behavior class and analyzed for correlations and relationships. The survey was administered in week eleven of a traditional semester and in the last week of the community service project. The survey was comprised of seven questions relating to group experience and one based on the impact of the community service project itself. Results: Significant findings revealed a positive correlation between the group experience and the feelings toward the project. In addition, multiple linear regressions suggested a positive and significant prediction. Conclusion: From the findings, implications for the development of experiential learning projects for use in the college classroom will be discussed. When paired with the results of previous research, the findings of this research can be very useful in developing group based service learning projects at the undergraduate level. Based upon the importance of service learning as an experiential teaching style, it is critical to understand how to better use this vehicle for discovery.

Roxanne Helm-Stevens

2009-01-01

243

Power Assignment Problems in Wireless Communication  

CERN Document Server

A fundamental class of problems in wireless communication is concerned with the assignment of suitable transmission powers to wireless devices/stations such that the resulting communication graph satisfies certain desired properties and the overall energy consumed is minimized. Many concrete communication tasks in a wireless network like broadcast, multicast, point-to-point routing, creation of a communication backbone, etc. can be regarded as such a power assignment problem. This paper considers several problems of that kind; for example one problem studied before in \\cite{Carrots, Bilo} aims to select and assign powers to $k$ of the stations such that all other stations are within reach of at least one of the selected stations. We improve the running time for obtaining a $(1+\\epsilon)$-approximate solution for this problem from $n^{((\\alpha/\\epsilon)^{O(d)})}$ as reported by Bilo et al. (\\cite{Bilo}) to $O(n+ {(\\frac{k^{2d+1}}{\\epsilon^d})}^{\\min{\\{2k, (\\alpha/\\epsilon)^{O(d)} \\}}})$ that is, we obtain a ru...

Funke, S; Lotker, Z; Naujoks, R; Funke, Stefan; Laue, Soeren; Lotker, Zvi; Naujoks, Rouven

2006-01-01

244

Staphylococcal nuclease: Sequential assignments and solution structure  

International Nuclear Information System (INIS)

Sequential assignments are reported for backbone 15N and 1H of nearly all residues of staphylococcal nuclease (Nase) complexed with thymidine 3',5'-diphosphate and Ca2+. Because of the relatively large size of the Nase ternary complex, Mr 18K, the crucial element of our assignment strategy was the use of isotope-edited two-dimensional NMR spectra, particularly 15N-edited nuclear Overhauser enhancement spectroscopy (NOESY), 15N-edited J-correlated spectroscopy (COSY), and 1H/15N or 1H/13C heteronuclear multiple quantum shift correlation spectroscopy (HMQC). These experiments, together with the more conventional NOESY, COSY, and homonuclear Hartmann-Hahn spectra of natural abundance or deuteriated samples, yielded backbone assignments of 127 of the 136 residues in the structured part of the protein. Using the NOESY data, the authors identified three helical domains and several ?-sheets which were in close correspondence with secondary structure identified in the crystal structure. Moreover, many long-range NOESY connectivities were identified that were in agreement with distances derived from the crystal structure. The region of the sequence in the neighborhood of residue 50 appears to be more flexible and disordered in solution than in the crystal. Very slowly exchanging amide protons are those found to be hydrogen bonded in the crystal structure; however, eveed in the crystal structure; however, even hydrogen-bonded amides located within similar types of regular secondary structures, e.g., ?-helices, exchange with greatly different rates

245

Undergraduate students’ information search practices  

OpenAIRE

This paper investigates undergraduate students’ information search practices.The subjects were 250 undergraduate students from two university departments in Greece, and a questionnaire was used to document their search practices. The results showed that the Web was the primary information system searched in order to findinformation for university assignments, while the level of database searching was verylow. In particular, the search engine Google was used very frequently either forunivers...

Kleopatra Nikolopoulou; Vasilis Gialamas

2011-01-01

246

Analysis of an Air Conditioning Coolant Solution for Metal Contamination Using Atomic Absorption Spectroscopy: An Undergraduate Instrumental Analysis Exercise Simulating an Industrial Assignment  

Science.gov (United States)

A real-life analytical assignment is presented to students, who had to examine an air conditioning coolant solution for metal contamination using an atomic absorption spectroscopy (AAS). This hands-on access to a real problem exposed the undergraduate students to the mechanism of AAS, and promoted participation in a simulated industrial activity.

Baird, Michael J.

2004-01-01

247

Evolution vs. Creationism Term Paper Assignment  

Science.gov (United States)

Students are asked to write a formal paper related to the Evolution and Creationism. Students may choose to write a persuasive argument paper, an analytical (compare and contrast) style paper, or an objective research-style paper. Students explore a major question that includes at least one of the topics explored through class discussion. Some examples include: discussing whether creationism belongs in public schools, exploring the evolution of the creationist movement in the United States or how public perceptions of science has changed since the formal introduction of the theory of evolution.

Katherine Bulinski

248

Engineering Your Own Superbug: A Useful Assignment to Evaluate Real Learning Comprehension in Microbiology Classes  

Directory of Open Access Journals (Sweden)

Full Text Available The learning comprehension of students in microbiology classes is not easy to evaluate, particularly when the student population is diverse in terms of backgrounds, majors, levels of training and preparedness, and the students’ expectations and enthusiasm for the class. It is difficult to design a one-size-fits-all exam that best suits a mixed student population; and most traditional assignments/case studies focusing on particular microbes or topics might not readily assess students’ overall understanding and learning comprehension. It is important to develop an assessment method that not only can engage students in active learning and deliberate practice but can also promote their imaginative and creative potential. The word “superbugs” often appears in the media and refers to some deadly or drug-resistant microbes. These superbugs possess special phenotypic and functional attributes that constitute their “superness.” It is predicted that more new surprising superbugs will emerge in the future and students should be challenged now with some mindstimulating ideas and exercises in their microbiology class. To develop a supplementary tool to evaluate students’ comprehension and to prepare them for the predicted superbugs unknown to us, a writing project entitled “Constructing Your Own Superbug” was designed to achieve these goals.

Yun-Chi Chen

2013-08-01

249

Integration of an Intelligent Tutoring System with a Web-based Authoring System to Develop Online Homework Assignments with Formative Feedback  

Science.gov (United States)

A web-based authoring tool, developed using VaNTH CAPE technology, is used to construct innovative online assignments that provide students with real time formative feedback as they attempt to solve quantitative engineering problems. The interactive system has found favor with instructors, teaching assistants and students. Because each step taken by the student in the problem solution is recorded by the accompanying learning management system, students and instructors can easily review modules to determine where the student went wrong. This approach also frees Teaching Assistants from the necessity of grading homework, most of which are worked correctly, and allows them to spend time with the students who most need their help. Because of the many options available in the authoring tool, novice developers often find it relatively difficult to design, construct and debug adaptive learning modules. The purpose of this work is to develop an Intelligent Tutoring System (ITS) that can be integrated with the authoring tool to provide personal guidance to new users as they develop homework problems. Previous ITSs have proved useful to learners in a wide variety of different domains, such as algebra, chemistry, and physics, resulting in gains of over one standard deviation. Clearsighted, Inc. has teamed with VaNTH to develop a version of the web authoring tool that allows information to flow between the ITS and the authoring tool. What is most interesting regarding this work is that the CAPE-based authoring tool was developed and works as its own stand-alone web-based application. Using Clearsighted, Inc.s tools, an ITS was constructed that required no modification to the original authoring tool. The resulting ITS provides immediate feedback in a tutorial setting, offering help when requested and adaptive just-in-time messages, as well as noting incorrect actions. All of this feedback, from the users point of view, seemingly comes from the authoring tool. A series of tutorials have been developed that will provide guidance to new users as they develop online homework assignments. Evaluation of the system is done by comparing authoring tasks performed by groups who learned to author without using the integrated system to groups performing the same tasks with the ITS.

2009-10-28

250

Knowledge construction in high school physics: A study of student/teacher interaction  

Science.gov (United States)

This study is a description and analysis of student learning when required to use vector mathematics to represent two dimensional situations in the solution of grade 12 physics problems. Coupled with this exploration, the role of a teacher as a facilitator in creating effective conditions and interactions to facilitate student knowledge construction was critically analyzed. Nine grade 12 physics students volunteered to participate in a process of articulating their reasoning and problem solving strategies over a sixteen week period in a regular secondary school classroom setting. The participants were taught the normal content of the Saskatchewan grade 12 physics curriculum by the researcher who is an accredited, experienced physics teacher. Data were collected by video recording of classroom sessions, interviews, student assignments, and field notes maintained by the researcher. Student learning is described through a combination of excerpts of student discourse and data collected from other sources during the study. Interpretation of student-teacher interaction is informed by a constructivist perspective of student knowledge construction and conceptual development in science education, and the personal teaching experience of the researcher. Student learning during increasingly complex use of vector mathematics is described. The sequence of topics begins with vector addition and subtraction, and problems requiring those functions for solution. Vector components are then developed using a combination of classroom activities and interactive discussion. The final topic developed is momentum. Students were found to have well developed experiential knowledge which interfered with their construction of conceptual knowledge. Concrete examples did not guarantee that students would develop conceptual understanding of a given phenomenon. Students used algorithms indiscriminately and often did not know if their answers were reasonable. When momentum was introduced, the students showed a variety of attempts at constructing the concept. They did not appear to understand the complex process of mathematical representation during the study even when they were instructed about the process. Students confused the meanings of equal and balanced which led to mistakes in writing vector equations representing relationships between forces. They did not seem to understand why vector mathematics had to be used in solving problems even when they correctly employed them in calculations. Transfer of knowledge from mathematics classes to physics classes was almost non-existent. In the final chapter recommendations for changes to physics curriculum and instructional strategies are presented. Student difficulty in applying vector mathematics to physics problem is explained in terms of student difficulty in understanding direction as a characteristic of some physics concepts and in representing physics concepts using mathematical models. Suggestions for future research include development of instruction to facilitate student understanding of mathematical representation and metacognitive skill development by students.

Wessel, Warren Edward

251

Applying Multilevel Modelling to Content Analysis Data: Methodological Issues in the Study of Role Assignment in Asynchronous Discussion Groups  

Science.gov (United States)

This study focuses on the process, output, and interpretation of "multilevel analyses" on "quantitative content analysis data" derived from asynchronous discussion group transcripts. The impact of role assignments on the level of knowledge construction reflected in students' contributions and the relation between message characteristics and these…

De Wever, Bram; Van Keer, Hilde; Schellens, Tammy; Valcke, Martin

2007-01-01

252

The "Mentor Paper" Writing Assignment in One Community College Puente Class: Preliminary Report from a Participant Observer.  

Science.gov (United States)

An educator participating in a community college Puente class as both participant and observer analyzes the structure and experience of one writing assignment representative of the program's objectives. The Puente program combines teaching, counseling, and mentoring to California community college students as a means of promoting learning,…

Cazden, Courtney B.

253

Competencias Sociales requeridas y observadas en alumnos de Medicina Veterinaria: la visión de los docentes - Social Competence observed and required in Veterinary students: teacher’s vision  

Directory of Open Access Journals (Sweden)

Full Text Available ResumenEn la Facultad de Ciencias Veterinarias de la Universidad Nacional delLitoral (Argentina se está realizando una investigación en torno a las Competencias Sociales reales y esperadas en los futuros MédicosVeterinarios, con la intención de describir las habilidades sociales con las que los alumnos llegan a la universidad, propiciadas por la escuela y el ambiente familiar, y las competencias que es deseable que desarrollen para su adecuada inserción universitaria, y posteriormente en el ámbito laboral. Como primer objetivo se planteó recoger información respecto de la visión de los docentes acerca de las competencias sociales esperadas y efectivamente observadas en sus alumnos. Tomando como referencia al Programa TE COMPETE (Universidad de Cantabria – España y Proyecto Tuning América Latina, se encuestaron cuarenta docentes. Del análisis de las encuestas se pudo observar que las competencias esperadas en los estudiantes son numéricamente muy inferiores a las observadas en ellos, siendo más notoria la diferencia en las competencias participativas ypersonales. La falta de habilidades de comunicación y de liderazgo fueremarcada por los docentes, quienes, a su vez, consideraron como muyimportantes a las competencias personales e interpersonales para eldesarrollo del futuro Medico Veterinario. Se concluye que resultaríaconveniente iniciar un camino de cambio que apunte a fomentar yfortalecer las competencias sociales de alumnos de Medicina Veterinaria. Para promover este cambio será necesario que el profesor cuente con espacios que le permitan la adquisición de estrategias metodológicas que faciliten su actuación didáctica.SummaryIn the Faculty of Veterinary Science (Universidad Nacional del Litoral – Argentina is being developed an investigation related to Social Competences already acquired and those expected in future Veterinarians. The aim of the study is to describe social skills that are already acquired by students at the beginning of their course of studies, propitiated by scholar and family environment, and social skills that are desirable to develop in students for a proper university insertion, and subsequently, in the working sphere. Firstly, it was gathered information regarding the teacher’s visionabout social competence, expected and actually observed in their students. Having taken as a reference the program called “TE COMPETE” (Cantabria University – Spain and the Latin America Tuning Proyect, forty teachers were surveyed. From the analysis of the surveys, it was observed that the competences expected in students were fewer than those seen in them, specially the participative and personal competences. The lack of communication skills and leadership was highlighted by teachers, who, in turn, considered as very important personal and interpersonal skills to develop in the future Medical Veterinary. We conclude that it would be convenient to initiate a way of change in order to encourage and strengthen social competences in Veterinary students. To promote this change it will be necessary that teachers have a place that allow the acquisition of methodological strategies to facilitate their teaching performance.

Cadoche, Lilian

2010-03-01

254

Responding to the Invisible Student.  

Science.gov (United States)

Investigates what constitutes good reflection. Describes how one instructor used the Myers-Briggs type indicator (MBTI) to explore her responses to the reflective writing produced by preservice English teachers. Concludes that the MBTI can provide insight into and improve how instructors assign, respond to, and evaluate student reflection.…

Callahan, Susan

2000-01-01

255

Teaching Students to Listen Empathically.  

Science.gov (United States)

Asserts the importance of empathy as a necessary condition for health service professionals. Describes classroom techniques and assignments that teach and assess empathic-listening skills. Includes students' ratings of 14 learning activities designed to enhance listening skills and empathy. (CFR)

Fernald, Peter S.

1995-01-01

256

Uncovering Students' Perceptions of Rubrics  

Science.gov (United States)

Research regarding rubrics in K-12 classrooms and in higher education has focused on teachers' perceptions and use of them. Rubrics have been found to objectify subjective assignments, ensure accountability, and improve student understanding of teacher expectations (Andrade, 2000; Hall & Salmon, 2003; Walvoord & Anderson, 1998). This study focuses…

Saam, Julie; Sorgman, Margo; Calhoon, Sharon K.

2007-01-01

257

Integrating ethics into case study assignments.  

Science.gov (United States)

I teach an upper-level writing course, Genes, Race, Gender, and Society, designed for Life Science majors, in which I utilize a case study to expose students to ethical ways of thinking. Students first work through the topical case study and then are challenged to rethink their responses through the lenses of ethics, taking into account different ethical frameworks. Students then develop their own case study, integrating ethical components. I want to expose my students to this way of thinking because I see technology being driven by the Jurassic Park phenomenon, "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should," and want future physicians grounded in a sense of how their actions relate to the greater good. PMID:25574287

Marshall, Pamela A

2014-12-01

258

45 CFR 302.50 - Assignment of rights to support.  

Science.gov (United States)

...false Assignment of rights to support. 302...Welfare OFFICE OF CHILD SUPPORT ENFORCEMENT (CHILD SUPPORT ENFORCEMENT...ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT...50 Assignment of rights to support....

2010-10-01

259

48 CFR 1342.202 - Assignment of contract administration.  

Science.gov (United States)

...2010-10-01 false Assignment of contract administration. 1342.202 Section 1342.202 Federal...COMMERCE CONTRACT MANAGEMENT CONTRACT ADMINISTRATION Contract Administration Services 1342.202 Assignment of...

2010-10-01

260

48 CFR 42.202 - Assignment of contract administration.  

Science.gov (United States)

...2010-10-01 false Assignment of contract administration. 42.202 Section 42.202 Federal...REGULATION CONTRACT MANAGEMENT CONTRACT ADMINISTRATION AND AUDIT SERVICES Contract Administration Services 42.202 Assignment...

2010-10-01

261

48 CFR 1442.202 - Assignment of contract administration.  

Science.gov (United States)

...2010-10-01 false Assignment of contract administration. 1442.202 Section 1442.202...INTERIOR CONTRACT MANAGEMENT CONTRACT ADMINISTRATION AND AUDIT SERVICES Contract Administration Services 1442.202 Assignment...

2010-10-01

262

47 CFR 73.4104 - FM assignment policies and procedures.  

Science.gov (United States)

...Telecommunication 4 2010-10-01 2010-10-01 false FM assignment policies and procedures. 73.4104 Section 73...SERVICES Rules Applicable to All Broadcast Stations § 73.4104 FM assignment policies and procedures. See Report and...

2010-10-01

263

13 CFR 500.210 - Assignment or transfer of loans.  

Science.gov (United States)

...2010-01-01 false Assignment or transfer of loans. 500.210 Section 500.210 Business Credit and Assistance EMERGENCY...GUARANTEED LOAN PROGRAM Oil and Gas Guaranteed Loans § 500.210 Assignment or transfer of loans....

2010-01-01

264

47 CFR 90.621 - Selection and assignment of frequencies.  

Science.gov (United States)

... false Selection and assignment of frequencies. 90.621 Section 90.621 Telecommunication FEDERAL COMMUNICATIONS COMMISSION...851-869 Mhz, 896-901 Mhz, and 935-940 Mhz Bands § 90.621 Selection and assignment of...

2010-10-01

265

Students Helping Students  

Directory of Open Access Journals (Sweden)

Full Text Available Through drawings and written text created over several weeks, Manju Hawkins reflects on her ideas about leadership. She shares her preference for informal leadership situations characterized by students helping other students.

Manju Hawkins

2008-06-01

266

Configuration assignment to the 156Pm isomers  

International Nuclear Information System (INIS)

Level structures of transitional nuclei (A?150-160), particularly of neutron-rich species, are of a great interest, but are rather poorly defined. In this context, the latest Nuclear Data Sheets (NDS) evaluator for A=156 mass chain remarked that assigning of a configuration to Z = 61 isotope 156Pm ground state (gs) by Hellstrom et al., and relating it to the 26.7-s activity present problems. In the present report, this situation is critically examined, taken together with more recent related experimental results and Rotor Particle Model calculations

267

Characteristic ratio assignment in fractional order systems.  

Science.gov (United States)

In this paper the characteristic ratios and generalized time constant are defined for all-pole commensurate fractional order systems. The sufficient condition for stability of these systems in terms of their characteristic ratios is obtained. Also an analytical approach for characteristic ratio assignment (CRA) to have a non-overshooting fast closed loop step response is introduced. The proposed CRA method is then employed to design a fractional order controller. Computer simulation results are presented to illustrate the performance of the CRA based designed fractional order controllers. PMID:20619834

Tabatabaei, Mohammad; Haeri, Mohammad

2010-10-01

268

Effects of Assigned Status: Performance, Aspirations, Motivation, Anxiety, and FOS.  

Science.gov (United States)

The effects of assigned status were investigated in same-sex competition with male (N=40) and female (N=80) college subjects. Those randomly assigned to high status improved in reaction time performance, while subjects randomly assigned to low status suffered a decrement. Contrary to expectations, in mixed-sex competition (fear of success arousal…

O'Connell, Agnes N.

269

English Language as a Requirement Course for Information Students -- A Content Analysis of English Syllabus in the Faculty of Arabic and Islamic Studies/ Nile Valley University  

Directory of Open Access Journals (Sweden)

Full Text Available The study investigated the importance of two elements in the process of syllabus design (ends / means specifications, program implementation in the faculty of Islamic and Arabic studies, Nile Valley University, designed in 1995.Results indicate that the ends/means specifications stage is used to present the general aims and the objective of each course. A general description of each course is also given. Program implementation is completely left for the teacher’s decision. The paper shows related literature review for information students. This kind of literature review (linguistic contents may however change the Program Implementation to a highly individualistic and subjective stage. Materials writing are left only for teachers and this may cause variations in the linguistic contents of the prescribed courses and this in turn may lead to many hidden syllabuses. Teachers training as a unique step in program implementation stage is lacking since there is no ESP teacher program available

Mustafa Shazali Mustafa Ahmed

2009-08-01

270

The importance of active learning and practice on the students' mastery of pharmacokinetic calculations for the intermittent intravenous infusion dosing of antibiotics  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Estimation of pharmacokinetic parameters after intermittent intravenous infusion (III of antibiotics, such as aminoglycosides or vancomycin, has traditionally been a difficult subject for students in clinical pharmacology or pharmacokinetic courses. Additionally, samples taken at different intervals during repeated dose therapy require manipulation of sampling times before accurate calculation of the patient-specific pharmacokinetic parameters. The main goal of this study was to evaluate the effectiveness of active learning tools and practice opportunities on the ability of students to estimate pharmacokinetic parameters from the plasma samples obtained at different intervals following intermittent intravenous infusion. Methods An extensive reading note, with examples, and a problem case, based on a patient’s chart data, were created and made available to students before the class session. Students were required to work through the case before attending the class. The class session was devoted to the discussion of the case requiring active participation of the students using a random participation program. After the class, students were given additional opportunities to practice the calculations, using online modules developed by the instructor, before submitting an online assignment. Results The performance of students significantly (P?P? Conclusions Despite being a difficult subject, students achieve mastery of pharmacokinetic calculations for the topic of intermittent intravenous infusion when appropriate active learning strategies and practice opportunities are employed.

Mehvar Reza

2012-11-01

271

Threat evaluation and weapon assignment decision support: A review of the state of the art  

OpenAIRE

In a military environment an operator is typically required to evaluate the tactical situation in real-time and protect defended assets against enemy threats by assigning available weapon systems to engage enemy craft. This environment requires rapid operational planning and decision making under severe stress conditions, and the associated responsibilities are usually divided between a number of operators and computerized decision support systems that aid these operators during the decision ...

Jn, Roux; Jh, Vuuren

2007-01-01

272

46 CFR 310.66 - Foreign students.  

Science.gov (United States)

...Academy § 310.66 Foreign students. (a) Appointments from...Applications for enrollment of foreign students shall be processed through...Be proficient in reading, writing and speaking idiomatic English...covering schoolwork of foreign students are required....

2010-10-01

273

Reciprocal Teaching of Lecture Comprehension Skills in College Students  

Science.gov (United States)

This study explored the effects of a reciprocal teaching intervention designed to enhance the lecture comprehension skills of college students. Forty low-verbal ability students and 40 high-verbal ability students (as measured by SAT scores) were chosen for the study and randomly assigned to experimental or control groups. The experimental groups…

Spivey, Norman R.; Cuthbert, Andrea

2006-01-01

274

The Effects of Differentiation and Motivation on Students' Performance  

Science.gov (United States)

This report described how implementation of differentiated assignments provided documentation of how students' motivation increased. The volunteers that participated in this study were 6th, 7th, and 8th graders. Students struggle academically to meet the expectations of their instructors. These struggles impact how students learn academically,…

Fenner, Dorraine; Mansour, Sueha Kayyal; Sydor, Natalie

2010-01-01

275

Using Reflection to Promote Students' Writing Process Awareness  

Science.gov (United States)

In this article, I demonstrate how the use of reflective writing assignments in first-year composition facilitated students' understanding of their own writing process strategies. I first discuss the theoretical roots from which reflective practice among student writers grows. Next, I employ my students' voices to demonstrate that reflection…

Amicucci, Ann N.

2011-01-01

276

Effectively Involving Faculty in the Assessment of Student Engagement  

Science.gov (United States)

The formal assessment of student engagement, as it has developed in recent years, is not necessarily a faculty-driven activity. Most faculty members who teach undergraduates are involved in the informal assessment of student engagement by taking attendance, observing student behaviors or expressions in class, providing feedback on assignments, and…

Nelson Laird, Thomas F.; Smallwood, Robert; Niskode-Dossett, Amanda Suniti; Garver, Amy K.

2009-01-01

277

Undergraduate Medical Students' Reasoning with Regard to the Prescribing Process  

Science.gov (United States)

When final year medical students reporting poor prescribing confidence were tested, key prescribing weaknesses emerged. This study aimed to characterize student variability in both the experience of and cognitive levels displayed during prescribing. Blooms Taxonomy cognitive categories were assigned to each question of a student test measuring…

Harries, C. S.; Botha, J.

2007-01-01

278

47 CFR 90.175 - Frequency coordinator requirements.  

Science.gov (United States)

...2010-10-01 false Frequency coordinator requirements. 90.175 Section 90.175 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Policies Governing the Assignment of Frequencies § 90.175 Frequency coordinator requirements....

2010-10-01

279

Assessing medical students’ competence in calculating drug doses  

Directory of Open Access Journals (Sweden)

Full Text Available Evidence suggests that healthcare professionals are not optimally able to calculate medicine doses and various strategies have been employed to improve these skills. In this study, the performance of third and fourth year medical students was assessed and the success of various educational interventions investigated. Students were given four types of dosing calculations typical of those required in an emergency setting. Full competence (at the 100% level was defined as correctly answering all four categories of calculation at any one time. Three categories correct meant competence at the 75% level. Interventions comprised an assignment with a model answer for self-assessment in the third year and a small group tutorial in the fourth year. The small groups provided opportunities for peer-assisted learning. A subgroup of 23 students received individual tuition from the lecturer prior to the start of the fourth year. Amongst the 364 eligible students, full competence rose from 23% at the beginning of the third year to 66% by the end of the fourth year. More students succeeded during the fourth than the third year of study. Success of small group tuition was assessed in a sample of 200 students who had formal assessments both before and after the fourth year tuition. Competence at the 75% level improved by 10% in attendees and decreased by 3% in non-attendees, providing evidence of the value of students receiving assistance from more able same-language peers. Good results were achieved with one-on-one tuition where individualised assistance allowed even struggling students to improve.

Catherine Harries

2013-09-01

280

Spin assignments of superdeformed bands in europium  

International Nuclear Information System (INIS)

A comprehensive investigation of the superdeformed bands observed in 142,143,144,147Eu was given. The fluctuation in the transition energies has been removed. The smoothed transition energies were fitted by the ab-expression or its modification. The spins of these bands, except for band 4 of 147Eu, have been assigned conclusively. The exit spin in 143Eu was proposed to be 29/2, different from that asserted to be determined experimentally but remains to be confirmed. The corresponding values in 142Eu and 144Eu(a) are 21 and 28, lower than those proposed in the literature by 6 and 8 units, respectively. Two pairs of superdeformed bands in 147Eu, i.e. bands 1,5 and bands 2,3 were proposed to be signature partners. The exit spins are 53/2 and 63/2 for the former pair, and 43/2 and 41/2 for the latter pair. In addition, both of them have a rather large de-coupling constant (?-1), implying they are of K = 1/2 and built on the single particle level ?[651]? or ?[530]?. This assignment may be helpful for the studies of the so-called identical bands and pseudo spin problem. The signature partner pairs observed in 144,148Eu are not included in the investigation

281

Dynamic assignment: there is an equilibrium !  

CERN Document Server

Given a network with a continuum of users at some origins, suppose that the users wish to reach specific destinations, but that they are not indifferent to the time needed to reach their destination. They may have several possibilities (of routes or deparure time), but their choices modify the travel times on the network. Hence, each user faces the following problem: given a pattern of travel times for the different possible routes that reach the destination, find a shortest path. The situation in a context of perfect information is a so-called Nash equilibrium, and the question whether there is such an equilibrium and of finding it if it exists is the so-called equilibrium assignment problem. It arises for various kind of networks, such as computers, communication or transportation network. When each user occupies permanently the whole route from the origin to its destination, we call it the static assignment problem, which has been extensively studied with pioneers works by Wardrop or Beckmann. A less studi...

Meunier, Frédéric

2008-01-01

282

Evaluating the Effects of Virtual Pair Programming on Students’ Achievement and Satisfaction  

Directory of Open Access Journals (Sweden)

Full Text Available Pair programming is a lightweight software development technique in which two programmers work together at one computer. In literature, many benefits of pair programming have been proposed, such as increased productivity, improved code quality, enhanced job satisfaction and confidence. Although pair programming provides clear pedagogical benefits, its collocation requirement and the limited time during a lab session are serious barriers in the full deployment and evaluation of this programming technique. This paper reports on a study that investigated the effectiveness of Virtual Pair Programming (VPP on student performance and satisfaction in an introductory Java course where students worked collaboratively in pairs on homework programming assignments, using online tools that integrated desktop sharing and real time communication. The results of this study support previous research findings and suggest that VPP is an effective pedagogical tool for flexible collaboration and an acceptable alternative to individual/solo programming experience, regarding productivity, code quality, academic performance and student satisfaction.

Nick Zacharis

2009-09-01

283

Do Students Using Electronic Books Display Different Reading Comprehension and Motivation Levels than Students Using Traditional Print Books?  

Science.gov (United States)

The effect of electronic books on the reading comprehension of middle and high school students was examined using an experimental posttest-only control-group design. A convenience sample of 140 randomly assigned middle and high school English students at an independent school in eastern North Carolina participated. Half of the students used…

Wells, Casey L.

2012-01-01

284

Minimalisasi Waktu Dengan Menggunakan Metode Hungari Pada Assignment Problem (Studi Kasus: Tim Renang Tirta Prima-Medan)  

OpenAIRE

Assignment problem is a very real problem in life professions. In general, this issue revolves on how to pair the person or employee with an existing job properly. So that the cost or time required is minimum. Hungari method is a good approach in finding solutions. The balance relation between workers and jobs in assignment problem makes it difficult to use sensitivity analysis methods. So the analysis will be done by QM software helped that it applied on Hungarian methods. This thesis presen...

Purba, Jusyan S.

2010-01-01

285

A Bayesian approach to simultaneously quantify assignments and linguistic uncertainty  

Energy Technology Data Exchange (ETDEWEB)

Subject matter expert assessments can include both assignment and linguistic uncertainty. This paper examines assessments containing linguistic uncertainty associated with a qualitative description of a specific state of interest and the assignment uncertainty associated with assigning a qualitative value to that state. A Bayesian approach is examined to simultaneously quantify both assignment and linguistic uncertainty in the posterior probability. The approach is applied to a simplified damage assessment model involving both assignment and linguistic uncertainty. The utility of the approach and the conditions under which the approach is feasible are examined and identified.

Chavez, Gregory M [Los Alamos National Laboratory; Booker, Jane M [BOOKER SCIENTIFIC FREDERICKSBURG; Ross, Timothy J [UNM

2010-10-07

286

A method for simultaneously counterbalancing condition order and assignment of stimulus materials to conditions.  

Science.gov (United States)

Counterbalanced designs are frequently used in the behavioral sciences. Studies often counterbalance either the order in which conditions are presented in the experiment or the assignment of stimulus materials to conditions. Occasionally, researchers need to simultaneously counterbalance both condition order and stimulus assignment to conditions. Lewis (1989; Behavior Research Methods, Instruments, & Computers 25:414-415, 1993) presented a method for constructing Latin squares that fulfill these requirements. The resulting Latin squares counterbalance immediate sequential effects, but not remote sequential effects. Here, we present a new method for generating Latin squares that simultaneously counterbalance both immediate and remote sequential effects and assignment of stimuli to conditions. An Appendix is provided to facilitate implementation of these Latin square designs. PMID:24903688

Zeelenberg, René; Pecher, Diane

2014-06-01

287

Cooperative multiple target assignment of submunitions based on Chaos-PSO algorithm  

Science.gov (United States)

In this paper Multi-Objective particle swarm optimization (MOPSO) algorithm is utilized to solve the problem for cooperative multiple target assignment, which is the optimization problem in the discrete search space. At first a model of multi-objective optimization for Cooperative Multiple Target Assignment is established. Aiming to solve out the local convergence phenomenon, the chaos mutation is introduced into PSO for improving global optimal ability. Another underlying problem is that computing speed of the algorithm must meet the operational requirement, so a new kind of Chaos-MOPSO Algorithm is developed to solve the target assignment problem with less population and iterations. At last an authentication example is given in this paper, compared with basic MOPSO and NSGA-II, the Chaos-MOPSO algorithm obtained a better Pareto solution set with smaller computational burden.

Wu, Xuzhong; Tang, Shengjing; Shi, Jiao

2011-10-01

288

On Optimal Linear Redistribution of VCG Payments in Assignment of Heterogeneous Objects  

CERN Document Server

There are p heterogeneous objects to be assigned to n competing agents (n > p) each with unit demand. It is required to design a Groves mechanism for this assignment problem satisfying weak budget balance, individual rationality, and minimizing the budget imbalance. This calls for designing an appropriate rebate function. Our main result is an impossibility theorem which rules out linear rebate functions with non-zero efficiency in heterogeneous object assignment. Motivated by this theorem, we explore two approaches to get around this impossibility. In the first approach, we show that linear rebate functions with non-zero are possible when the valuations for the objects are correlated. In the second approach, we show that rebate functions with non-zero efficiency are possible if linearity is relaxed.

Gujar, Sujit

2008-01-01

289

Optimal Index Assignment for Multiple Description Scalar Quantization  

CERN Document Server

We provide a method for designing an optimal index assignment for scalar K-description coding. The method stems from a construction of translated scalar lattices, which provides a performance advantage by exploiting a so-called staggered gain. Interestingly, generation of the optimal index assignment is based on a lattice in K-1 dimensional space. The use of the K-1 dimensional lattice facilitates analytic insight into the performance and eliminates the need for a greedy optimization of the index assignment. It is shown that that the optimal index assignment is not unique. This is illustrated for the two-description case, where a periodic index assignment is selected from possible optimal assignments and described in detail. The new index assignment is applied to design of a K-description quantizer, which is found to outperform a reference K-description quantizer at high rates. The performance advantage due to the staggered gain increases with increasing redundancy among the descriptions.

Zhang, Guoqiang; Kleijn, W Bastiaan

2011-01-01

290

Postcards from Flint, Michigan: Helping Students Develop a Sense of Place in the Narrative Essay.  

Science.gov (United States)

Presents two assignments that are designed to help students (at the high school and college levels) to develop a sense of place while building skills to improve their narrative writing. Includes the assignment sheet. Describes how students create a Michigan Travel Guide from their final drafts. (SR)

Blumner, Jacob S.; Barnett, Robert W.

2000-01-01

291

Parents' Reports on Homework Amount and Problems in Academically Talented Elementary Students.  

Science.gov (United States)

A study examined the amount and types of responses to homework assignments reported by 577 parents of academically talented elementary students. Students completed homework with few negative responses. While homework assignments increased with grade level, the amount of time parents spent assisting with homework did not increase beyond first…

Worrell, Frank C.; Gabelko, Nina H.; Roth, David A.; Samuels, Lisa K.

1999-01-01

292

Preparing Computing Students for Culturally Diverse E-Mediated IT Projects  

Science.gov (United States)

In this paper we present an account of an undergraduate team-based assignment designed to facilitate, exhibit and record team-working skills in an e-mediated environment. By linking the student feedback received to Hofstede's classic model of cultural dimensions we aim to show the assignment's suitability in revealing the student's multi-cultural…

Conrad, Marc; French, Tim; Maple, Carsten; Zhang, Sijing

2006-01-01

293

Automated sequence-specific protein NMR assignment using the memetic algorithm MATCH  

International Nuclear Information System (INIS)

MATCH (Memetic Algorithm and Combinatorial Optimization Heuristics) is a new memetic algorithm for automated sequence-specific polypeptide backbone NMR assignment of proteins. MATCH employs local optimization for tracing partial sequence-specific assignments within a global, population-based search environment, where the simultaneous application of local and global optimization heuristics guarantees high efficiency and robustness. MATCH thus makes combined use of the two predominant concepts in use for automated NMR assignment of proteins. Dynamic transition and inherent mutation are new techniques that enable automatic adaptation to variable quality of the experimental input data. The concept of dynamic transition is incorporated in all major building blocks of the algorithm, where it enables switching between local and global optimization heuristics at any time during the assignment process. Inherent mutation restricts the intrinsically required randomness of the evolutionary algorithm to those regions of the conformation space that are compatible with the experimental input data. Using intact and artificially deteriorated APSY-NMR input data of proteins, MATCH performed sequence-specific resonance assignment with high efficiency and robustness

294

Automated sequence-specific protein NMR assignment using the memetic algorithm MATCH  

Energy Technology Data Exchange (ETDEWEB)

MATCH (Memetic Algorithm and Combinatorial Optimization Heuristics) is a new memetic algorithm for automated sequence-specific polypeptide backbone NMR assignment of proteins. MATCH employs local optimization for tracing partial sequence-specific assignments within a global, population-based search environment, where the simultaneous application of local and global optimization heuristics guarantees high efficiency and robustness. MATCH thus makes combined use of the two predominant concepts in use for automated NMR assignment of proteins. Dynamic transition and inherent mutation are new techniques that enable automatic adaptation to variable quality of the experimental input data. The concept of dynamic transition is incorporated in all major building blocks of the algorithm, where it enables switching between local and global optimization heuristics at any time during the assignment process. Inherent mutation restricts the intrinsically required randomness of the evolutionary algorithm to those regions of the conformation space that are compatible with the experimental input data. Using intact and artificially deteriorated APSY-NMR input data of proteins, MATCH performed sequence-specific resonance assignment with high efficiency and robustness.

Volk, Jochen [ETH Zuerich, Institut fuer Molekularbiologie und Biophysik (Switzerland); Herrmann, Torsten [Universite de Lyon, CNRS/ENS Lyon/UCB-Lyon 1 (France); Wuethrich, Kurt [ETH Zuerich, Institut fuer Molekularbiologie und Biophysik (Switzerland)], E-mail: wuthrich@mol.biol.ethz.ch

2008-07-15

295

Highly automated protein backbone resonance assignment within a few hours: the strategy and software package  

International Nuclear Information System (INIS)

Sequential resonance assignment represents an essential step towards the investigation of protein structure, dynamics, and interaction surfaces. Although the experimental sensitivity has significantly increased in recent years, with the availability of high field magnets and cryogenically cooled probes, resonance assignment, even of small globular proteins, still generally requires several days of data collection and analysis using standard protocols. Here we introduce the BATCH strategy for fast and highly automated backbone resonance assignment of 13C, 15N-labelled proteins. BATCH makes use of the fast data acquisition and analysis tools BEST, ASCOM, COBRA, and HADAMAC, recently developed in our laboratory. An improved Hadamard encoding scheme, presented here, further increases the performance of the HADAMAC experiment. A new software platform, interfaced to the NMRView software package, has been developed that enables highly automated NMR data processing and analysis, sequential resonance assignment, and 13C chemical shift extraction. We demonstrate for four small globular proteins that sequential resonance assignment can be routinely obtained within a few hours, or less, in a highly automated and robust way

296

An Adaptive Strategy for an Optimized Collision-Free Slot Assignment in Multichannel Wireless Sensor Networks  

Directory of Open Access Journals (Sweden)

Full Text Available Convergecast is the transmission paradigm used by data gathering applications in wireless sensor networks (WSNs. For efficiency reasons, a collision-free slotted medium access is typically used: time slots are assigned to non-conflicting transmitters. Furthermore, in any slot, only the transmitters and the corresponding receivers are awake, the other nodes sleeping in order to save energy. Since a multichannel network increases the throughput available to the application and reduces interference, multichannel slot assignment is an emerging research domain in WSNs. First, we focus on a multichannel time slot assignment that minimizes the data gathering delays. We compute the optimal time needed for a raw data convergecast in various multichannel topologies. Then, we focus on how to adapt such an assignment to dynamic demands of transmissions (e.g., alarms, temporary additional application needs and retransmissions. We formalize the problem using linear programming, and we propose an incremental technique that operates on an optimized primary schedule to provide bonus slots to meet new transmission needs. We propose AMSA, an Adaptive Multichannel Slot Assignment algorithm, which takes advantage of bandwidth spatial reuse, and we evaluate its performances in terms of the number of slots required, slot reuse, throughput and the number of radio state switches.

Pascale Minet

2013-07-01

297

Political Psychology - Public Political Attitudes Assignment  

Science.gov (United States)

Students were asked to compare their estimates of public opinion on several current issues to the actual values obtained through the analysis of National Surveys. The objective was to explore a common social attribution error and to acquire familiarity with data sources and on-line analysis tools.

Marfleet, Greg

298

Assigning Level in Data-Mining Exercises  

Science.gov (United States)

There is currently much interest in ascribing outcomes to Masters (M) level programmes. It is particularly difficult to define M level outcomes in bioinformatics for students on non-specialist programmes. An approach is described that attempts to discriminate undergraduate from M level in a data-mining exercise. Differentiation of level is based…

Hooley, Paul; Chilton, Ian J.; Fincham, Daron A.; Burns, Alan T.; Whitehead, Michael P.

2007-01-01

299

100% complete assignment of non-labile 1H, 13C, and 15N signals for calcium-loaded calbindin D9k P43G  

OpenAIRE

Here we present the 100% complete assignment chemical shift of non-labile 1H, 15N and 13C nuclei of Calbindin D9k P43G. The assignment includes all non-exchangeable side chain nuclei, including ones that are rarely reported, such as LysN? as well as the termini. NMR experiments required to achieve truly complete assignments are discussed. To the best of our knowledge our assignments for Calbindin D9k extend beyond previous studies reaching near-completeness (Vis et al. in Biochem 33:14858–...

Oktaviani, Nur Alia; Otten, Renee; Dijkstra, Klaas; Scheek, Ruud M.; Thulin, Eva; Akke, Mikael; Mulder, Frans A. A.

2011-01-01

300

Classifier Assignment by Corpus-based Approach  

CERN Document Server

This paper presents an algorithm for selecting an appropriate classifier word for a noun. In Thai language, it frequently happens that there is fluctuation in the choice of classifier for a given concrete noun, both from the point of view of the whole spe ech community and individual speakers. Basically, there is no exect rule for classifier selection. As far as we can do in the rule-based approach is to give a default rule to pick up a corresponding classifier of each noun. Registration of classifier for each noun is limited to the type of unit classifier because other types are open due to the meaning of representation. We propose a corpus-based method (Biber, 1993; Nagao, 1993; Smadja, 1993) which generates Noun Classifier Associations (NCA) to overcome the problems in classifier assignment and semantic construction of noun phrase. The NCA is created statistically from a large corpus and recomposed under concept hierarchy constraints and frequency of occurrences.

Sornlertlamvanich, V; Meknavin, S; Sornlertlamvanich, Virach; Pantachat, Wantanee; Meknavin, Surapant

1994-01-01

301

Generalized phase evaluation for stereophotogrammetric correspondence assignment.  

Science.gov (United States)

Phase-shifting fringe projection is the primary structured illumination method for high-accuracy, three-dimensional (3D) shape measurements in the fields of profilometry and stereophotogrammetry. Many different schemes for the phase evaluation and the phase-shifted fringe pattern design exist. Here we focus on the role of the phase evaluation in the context of stereophotogrammetry, where the nominal phase value itself is merely used as an image feature that can be exploited to establish a correspondence between the two camera views. Starting from the classical phase evaluation function, we will discuss its essential properties for a highly accurate correspondence mapping. Based on the findings, we generalize the classical function to derive a generalized phase value for a sequence of stereo images. An experimental comparison between a correspondence assignment using the classical phase evaluation function and a specifically chosen general phase evaluation function is given. PMID:23381293

Große, Marcus; Schaffer, Martin; Harendt, Bastian; Kowarschik, Richard

2012-08-15

302

Y(4260) and possible charmonium assignment  

International Nuclear Information System (INIS)

The newly reported Y(4260) becomes the second most massive state in the charmonium family. We argue that it displaces the ?(4415) as the (largely) 4s vector charmonium state, recall s-d wave interference to explain the lack of a signal in e-e+?hadrons and suggest some further study avenues that can exclude exotic meson assignments. The absence of a J/?KK mode can be understood, beyond phase space suppression, to be a consequence of chiral symmetry. We also provide a model calculation in this sector showing that, although forcing the fit somewhat (which suggests a small sea quark wave function component), the state can be incorporated in a standard scheme

303

Structural Encoding of Static Single Assignment Form  

DEFF Research Database (Denmark)

Static Single Assignment (SSA) form is often used as an intermediate representation during code optimization in Java Virtual Machines. Recently, SSA has successfully been used for bytecode verification. However, constructing SSA at the code consumer is costly. SSAbased mobile code transport formats have been shown to eliminate this cost by shifting SSA creation to the code producer. These new formats, however, are not backward compatible with the established Java class-file format. We propose a novel approach to transport SSA information implicitly through structural code properties of standard Java bytecode. While the resulting bytecode sequence can still be directly executed by traditional Virtual Machines, our novel VM can infer SSA form and confirm its safety with virtually no overhead.

Gal, Andreas; Probst, Christian

2005-01-01

304

Cluster Chain Based Relay Nodes Assignment  

Directory of Open Access Journals (Sweden)

Full Text Available Wireless sensor Networks are very famous these days due to their coverage and enormous benefits. Clustering the sensor nodes efficiently and dynamically with least energy consumption is the current issue in front of researchers, so that lifetime of sensor nodes will be increased. Cooperation among Relay Nodes and Edge Nodes (ENs along with restrained energy utilization depends upon some protocol such as LEACH for data transmission. In this paper, we propose a Cluster Chain Based Relay Nodes Assignment (CCBRNA scheme to manage the energy constraints in WSN, which Assigns Relay Nodes (Cluster-Heads on the basis of energy and distances parameters but priority is always given to the energy value. The primary model of CCBRNA based on LEACH and PEGASIS protocols is redeveloped to enlarge the lifetime span of network nodes. This scheme is sliced into two main steps. In the first step Cluster-Head is selected and then in second step data transmission starts using an internal chain of nodes according to the distances of nodes from Base Station. In data transmission step, data transportation between different clusters takes place and lastly data is sent to the end terminal moving via the nearest Cluster-Head. Simulation in MATLAB verifies the enhanced lifetime of the nodes. We have used the distance as the key parameter while data transmission takes place. The scheme is efficient as when there are large number of nodes, chaining will take very less time and as well as energy to transmit the data to Cluster-Head. We have further applied an external chaining among Cluster-Heads of different clusters. With the applied limitations and suggested resources such as additional processor, it works well in relaying process.

Gulnaz Ahmed

2014-01-01

305

Building a Local Stratigraphic Column: A research-based assignment for an introductory course  

Science.gov (United States)

Students build a stratigraphic column for a pre-selected area through the compilation of a series of individual research projects. Students are required to conduct introductory field research as well as a literature search to become "experts" on a selected stratigraphic unit. In addition to a final report, students will present their information at an outcrop on an end-of-semester field trip.

Jennifer Hargrave

306

Student research activities in the Technology Assessments Section of the Health and Safety Research Division, Summer 1980  

International Nuclear Information System (INIS)

Reports summarizing activities of students assigned to the Technology Assessments Section of the Health and Safety Research Division for the summer 1980 are presented. Unless indicated otherwise, each report was written by the student whose work is being described. For each student, the student's supervisor, the name of the program under which the student was brought to ORNL, the academic level of the student, and the name of the ORNL project to which the student was assigned are tabulated. The reports are presented in alphabetical order of the students' last names

307

Student research activities in the Technology Assessments Section of the Health and Safety Research Division, Summer 1980  

Energy Technology Data Exchange (ETDEWEB)

Reports summarizing activities of students assigned to the Technology Assessments Section of the Health and Safety Research Division for the summer 1980 are presented. Unless indicated otherwise, each report was written by the student whose work is being described. For each student, the student's supervisor, the name of the program under which the student was brought to ORNL, the academic level of the student, and the name of the ORNL project to which the student was assigned are tabulated. The reports are presented in alphabetical order of the students' last names.

Chester, R.O.; Roberts, D.A.

1981-08-01

308

Towards Automated Structure-Based NMR Resonance Assignment  

Science.gov (United States)

We propose a general framework for solving the structure-based NMR backbone resonance assignment problem. The core is a novel 0-1 integer programming model that can start from a complete or partial assignment, generate multiple assignments, and model not only the assignment of spins to residues, but also pairwise dependencies consisting of pairs of spins to pairs of residues. It is still a challenge for automated resonance assignment systems to perform the assignment directly from spectra without any manual intervention. To test the feasibility of this for structure-based assignment, we integrated our system with our automated peak picking and sequence-based resonance assignment system to obtain an assignment for the protein TM1112 with 91% recall and 99% precision without manual intervention. Since using a known structure has the potential to allow one to use only N-labeled NMR data and avoid the added expense of using C-labeled data, we work towards the goal of automated structure-based assignment using only such labeled data. Our system reduced the assignment error of Xiong-Pandurangan-Bailey-Kellogg's contact replacement (CR) method, which to our knowledge is the most error-tolerant method for this problem, by 5 folds on average. By using an iterative algorithm, our system has the added capability of using the NOESY data to correct assignment errors due to errors in predicting the amino acid and secondary structure type of each spin system. On a publicly available data set for Ubiquitin, where the type prediction accuracy is 83%, we achieved 91% assignment accuracy, compared to the 59% accuracy that was obtained without correcting for typing errors.

Jang, Richard; Gao, Xin; Li, Ming

309

Impact of Interactive Energy-Balance Modeling on Student Learning in a Core-Curriculum Earth Science Course  

Science.gov (United States)

An interactive instructional module has been developed to study energy balance at the earth's surface. The module uses a graphical interface to model each of the major energy components involved in the partitioning of energy at this surface: net radiation, sensible and latent heat fluxes, ground heat flux, heat storage, anthropogenic heat, and advective heat transport. The graphical interface consists of an energy-balance diagram composed of sky elements, a line or box representing the air or sea surface, and arrows which indicate magnitude and direction of each of the energy fluxes. In April 2005 an energy-balance project and laboratory assignment were developed for a core-curriculum earth science course at Clark Atlanta University. The energy-balance project analyzes surface weather data from an assigned station of the Georgia Automated Environmental Monitoring Network (AEMN). The first part of the project requires the student to print two observations of the "Current Conditions" web page for the assigned station: one between the hours of midnight and 5:00 a.m., and the other between the hours of 3:00- 5:00 p.m. A satellite image of the southeastern United States must accompany each of these printouts. The second part of the project can be completed only after the student has modeled the 4 environmental scenarios taught in the energy-balance laboratory assignment. The student uses the energy-balance model to determine the energy-flux components for each of the printed weather conditions at the assigned station. On successful completion of the project, the student has become familiar with: (1) how weather observations can be used to constrain parameters in a microclimate model, (2) one common type of error in measurement made by weather sensors, (3) some of the uses and limitations of environmental models, and (4) fundamentals of the distribution of energy at the earth's surface. The project and laboratory assignment tie together many of the earth science concepts taught in the course: geology (soils), oceanography (surface mixed layer), and atmospheric science (meteorology of the lowest part of the atmosphere). Details of the project and its impact on student assessment tests and surveys will be presented.

Mandock, R. L.

2008-12-01

310

VESTA Student Profiles  

Science.gov (United States)

These vignettes, from the Viticulture and Enology Science and Technology Alliance, showcase students' experiences as they learn the science and skills required for the grape and wine industry and begin their careers in this exciting and exploding field. Students from Iowa, Missouri, Illinois, and Oklahoma are represented. Each experience is documented on a one- or two-page PDF.

2011-09-22

311

Art for the Smart: Paper and oral presentation assignments for an Earth Materials course  

Science.gov (United States)

A letter from the fictional Art for the Smart company addresses students in the Earth Materials course: "You might be wondering why an artist needs a geology consultant. I am creating a sculpture garden filled with mythical beings. I would like each student to recommend two unique minerals for one of these sculptures..." For this project students randomly select a mythical being, two mineral groups, and a mineral characteristic. For example, a student might be assigned the goddess Freya, a sulfate, a vanadate, and twinning. Students then choose a specific mineral from each group, describe their physical and chemical characteristics, and recommend how the minerals could be incorporated into the sculpture. Reports are presented in short oral presentations and two-page business letters with accompanying bibliography and illustrations. The letter format provides a concise way to communicate results to the Art for the Smart "client" while preparing students for their job-hunting days ahead. The oral presentations are structured as features for a news program. Talks are limited to three to five minutes and four slides: title page, mineral #1, mineral #2, and mythical being. The strict limits help students concentrate on scientific content and smooth delivery rather than flashy visual aids. The student audience and the professor evaluate each in-class presentation. This has become a popular assignment because it engages student imaginations to relate minerals to mythical beings and creatively design a sculpture. Each project is unique and therefore more interesting for both students and faculty to evaluate. The projects are nearly impossible to plagiarize from previous years or from internet sources. Earth Materials is a sophomore level course for Geoscience and Marine Science majors at Eckerd College. The Art for the Smart project leads into an assignment for the second half of the semester featuring building stones. A new "client" sends a letter to the class explaining the situation: "I own a building in downtown St. Petersburg adorned with natural building stone. I am planning to expand my business to your hometown. I would like your professional opinion on whether or not I should use the same stone on my new building..." In this case, students examine thin sections and hand specimens to identify building stones. Each student chooses one building stone and conducts literature research to explain the advantages and disadvantages of using the rock on a building. The ultimate goal is not only to describe the rock and its geologic origins, but also to persuade the "client" to use or not use the building stone in a new location. In addition to writing a business letter and giving an in-class presentation, students give a short talk in the "field" at the downtown location featuring the building stone. In completing the two Earth Materials projects over the course of the semester, students progress from recognizing minerals in hand specimens to identifying rocks using thin sections and developing theories regarding their geologic origins.

Wetzel, L. R.

2011-12-01

312

Instructor and Student Perceptions of What Is Learned by Writing the Business Report.  

Science.gov (United States)

Surveys instructors and students regarding what they believe students learn and what writing skills they improve by completing business report writing assignments. Finds that business communication instructors reported greater improvement in students' skills than students reported for themselves. Offers four guidelines for closing this gap.…

Hiemstra, Kathleen M.

2001-01-01

313

Lightpath routing and wavelength assignment in WDM networks  

Science.gov (United States)

This paper consider the design of lightpath Routing and Wavelength Assignment (RWA) problem in Wavelength Division Multiplexing (WDM) networks with or without wavelength conversion. To minimize the required network cost, one has to device as few network devices and take the least network building cost with respect to the required demand requirements. In our model, the required cost including the one to install wavelengths in the network nodes and the building cost to use a specific wavelength in a specified optical link. The problem is formulated as a binary linear programming where the objective function is the minimization of network building cost. Many literatures have pointed out that solving the formulation of this kind is very computationally demanding and heuristic algorithms and/or relaxation techniques are needed for problems with nontrivial size. In this paper, a Lagrangian relaxation based solving procedure is developed for the RWA problem. In particular, We first transfer the RWA problem into a multicommodity integer flow problem using graph transformation technique by adding some artificial network nodes and links with proper cost on them. To achieve minimum network cost, two problem solving phases are developed for networks with and without wavelength converter respectively. In the first phase, we try to optimize the cost of routing without violating the wavelength continuity constraints. If no feasible solutions are obtained in this phase, it means there are no sufficient paths to route lightpaths without wavelength converter. We then take another graph extension with wavelength converter geared to the RWA problem and then applying a shortest path based heuristic algorithm to solve the problem based on the solution obtained from first phase. Two network topologies, GTE network and NSFNET network, are used to evaluate the computational results. Examining the Lagrangian based heuristic results and the lower bounds reveal that the proposed algorithm can efficiently provide a nearly optimal solution for our problem.

Lee, Steven S.; Wu, Cheng-Shong; Chang, Ching-Lung

2001-10-01

314

Measuring University students' understanding of the greenhouse effect - a comparison of multiple-choice, short answer and concept sketch assessment tools with respect to students' mental models  

Science.gov (United States)

The greenhouse effect comes up in most discussions about climate and is a key concept related to climate change. Existing studies have shown that students and adults alike lack a detailed understanding of this important concept or might hold misconceptions. We studied the effectiveness of different interventions on University-level students' understanding of the greenhouse effect. Introductory level science students were tested for their pre-knowledge of the greenhouse effect using validated multiple-choice questions, short answers and concept sketches. All students participated in a common lesson about the greenhouse effect and were then randomly assigned to one of two lab groups. One group explored an existing simulation about the greenhouse effect (PhET-lesson) and the other group worked with absorption spectra of different greenhouse gases (Data-lesson) to deepen the understanding of the greenhouse effect. All students completed the same assessment including multiple choice, short answers and concept sketches after participation in their lab lesson. 164 students completed all the assessments, 76 completed the PhET lesson and 77 completed the data lesson. 11 students missed the contrasting lesson. In this presentation we show the comparison between the multiple-choice questions, short answer questions and the concept sketches of students. We explore how well each of these assessment types represents student's knowledge. We also identify items that are indicators of the level of understanding of the greenhouse effect as measured in correspondence of student answers to an expert mental model and expert responses. Preliminary data analysis shows that student who produce concept sketch drawings that come close to expert drawings also choose correct multiple-choice answers. However, correct multiple-choice answers are not necessarily an indicator that a student produces an expert-like correlating concept sketch items. Multiple-choice questions that require detailed knowledge of the greenhouse effect (e.g. direction of re-emission of infrared energy from greenhouse gas) are significantly more likely to be answered correctly by students who also produce expert-like concept sketch items than by students who don't include this aspect in their sketch and don't answer the multiple choice questions correctly. This difference is not as apparent for less technical multiple-choice questions (e.g. type of radiation emitted by Sun). Our findings explore the formation of student's mental models throughout different interventions and how well the different assessment techniques used in this study represent the student understanding of the overall concept.

Gold, A. U.; Harris, S. E.

2013-12-01

315

Implementation of an agile maintenance mechanic assignment methodology  

Science.gov (United States)

The objective of this research was to develop a decision support system (DSS) to study the impact of introducing new equipment into a medical apparel plant from a maintenance organizational structure perspective. This system will enable the company to determine if their capacity is sufficient to meet current maintenance challenges. The DSS contains two database sets that describe equipment and maintenance resource profiles. The equipment profile specifies data such as mean time to failures, mean time to repairs, and minimum mechanic skill level required to fix each machine group. Similarly, maintenance-resource profile reports information about the mechanic staff, such as number and type of certifications received, education level, and experience. The DSS will then use this information to minimize machine downtime by assigning the highest skilled mechanics to machines with higher complexity and product value. A modified version of the simplex method, the transportation problem, was used to perform the optimization. The DSS was built using the Visual Basic for Applications (VBA) language contained in the Microsoft Excel environment. A case study was developed from current existing data. The analysis consisted of forty-two machine groups and six mechanic categories with ten skill levels. Results showed that only 56% of the mechanic workforce was utilized. Thus, the company had available resources for meeting future maintenance requirements.

Jimenez, Jesus A.; Quintana, Rolando

2000-10-01

316

Consent in paediatrics: a complex teaching assignment.  

OpenAIRE

The topic of consent in paediatrics is made more difficult, and at the same time more interesting, by the complexity of the issues involved and the consequent diversity of viewpoints. In a teaching session for senior medical students on consent in paediatrics it proved necessary to reinstate previous learning from a range of disciplines. Philosophical medical ethics, developmental psychology, communication skills and the appropriate legal definitions all contributed to a proper understanding ...

Grant, V. J.

1991-01-01

317

Activity Based Physics Alternative Homework Assignments: Tailgating  

Science.gov (United States)

This page contains an alternative homework problem related to tailgating and the related physics. Users will be prompted to make calculations about stopping distance in a vehicle traveling at high speed behind another. The problem is designed to allow students to independently explore inertia in motion and the relationship between mass and inertia. This item is part of a larger collection of alternative problems based on physics education research.

Vick, K.; Redish, Edward F.; Cooney, Patrick

2009-01-06

318

CELLULAR NETWORK OPTIMIZATION USING MULTI HOP DYNAMIC CHANNEL ASSIGNMENT WITH DYNAMIC CHANNEL ASSIGNMENT SCHEME  

Directory of Open Access Journals (Sweden)

Full Text Available Rapid growth in telecom industry searching for new methods provide the better service to their customer here implementing proposes a multihop dynamic channel assignment (MDCA scheme for time division multiple access (TDMA-based multihop cellular networks. The proposed MDCA assigns channels are observed in ofdma system to the calls based on interference information in surrounding cells, provided by the Interference Information Table (IIT in the network. Two different channel searching strategies, Sequential Channel Searching (SCS and Packing based Channel Searching (PCS, for use in MDCA are proposed and studied. A channel reassignment procedure to further enhance the performance is also investigated. Simulation results show that MDCA significantly improves the system capacity. Furthermore, the MDCA can efficiently alleviate the call blocking in hot-spot cells.

Arasada Jagadeesh ,D. Ajay kumar

2012-05-01

319

Joint Power Control, Base Station Assignment, and Channel Assignment in Cognitive Femtocell Networks  

Directory of Open Access Journals (Sweden)

Full Text Available Cognitive radio and femtocells are recent technology breakthroughs that aim to achieve throughput improvement by means of spectrum management and interference mitigation, respectively. However, these technologies are limited by the former's susceptibility to interference and the latter's dependence on bandwidth availability. In this paper, we overcome these limitations by integrating cognitive radio and femtocell technology and exploring its feasibility and throughput improvement. To realize this, we propose an integrated architecture and formulate a multiobjective optimization problem with mixed integer variables for the joint power control, base station assignment, and channel assignment scheme. In order to find a pareto optimal solution, a weighted sum approach was used. Based on numerical results, the optimization framework is found to be both stable and converging. Simulation studies further show that the proposed architecture and optimization framework improve the aggregate throughput as the client population rises, hence confirming the successful and beneficial integration of these technologies.

John Paul M. Torregoza

2010-01-01

320

TRASA: TRaffic Aware Slot Assignment Algorithm in Wireless Sensor Networks  

OpenAIRE

In data gathering applications which is a typical application paradigm in wireless sensor networks, sensor nodes may have different traffic demands. Assigning equal channel access to each node may lead to congestion, inefficient use of the bandwidth and decrease of the application performance. In this paper, we prove that the time slot assignment problem is NP-complete when p-hop nodes are not assigned the same slot, with 1 <= p <= h for any strictly positive integer h. We p...

Amdouni, Ichrak; Minet, Pascale

2012-01-01

321

Factors of Success of Female Expatriates During International Assignments  

OpenAIRE

The aim of this bachelor’s thesis was to study what the factors of success of female expatriates are during international assignments. Also, the objective was to find out how companies could support and enhance these factors in the future and what kind of barriers of success there exist for female expatriates. The theoretical study examined international assignments in general, expatriates, success and failure of international assignments and the barriers of success. Also, female expatriate...

Lapinoja, Anu

2012-01-01

322

THE CHALLENGES OF WOMEN EXPATRIATES REGARDING INTERNATIONAL ASSIGNMENT  

OpenAIRE

With the ever-increasing amount of global business conducted in today’s world, the need for expatriate assignments on behalf of the workplace is increasing also. There is a deficit in the amount of female managers currently on international assignment. The primary objective of this thesis was to identify the challenges facing women, which would have prevented more women from embracing international assignments, and to more thoroughly explore stated challenges in order to pinpoint possib...

House, Allison

2013-01-01

323

An Improved Point-track Optimal Assignment Algorithm  

OpenAIRE

In order to improve the accuracy of data association of the Optimal Assignment (OA) algorithm based on dynamic information, an improved Point-Track Optimal Assignment (IPTOA) algorithm based on multi-source information is proposed. The improved algorithm gets valid 3-tuple of measurement set by solving 3-Dimensional (3-D) assignment problem which is based on dynamic information. Then fuses multi-source information by combination rule of D-S evidence theory and constructs the point-track corre...

Zhonglei Zhang; Weihua Zhang; Li Zhou

2013-01-01

324

30 CFR 281.42 - Effect of assignment on particular lease.  

Science.gov (United States)

...false Effect of assignment on particular lease. 281.42 Section 281.42 Mineral...OUTER CONTINENTAL SHELF Assignments and Lease Extensions § 281.42 Effect of assignment on particular lease. (a) When an assignment is made...

2010-07-01

325

A modified strategy for sequence specific assignment of protein NMR spectra based on amino acid type selective experiments  

International Nuclear Information System (INIS)

The determination of the three-dimensional structure of a protein or the study of protein-ligand interactions requires the assignment of all relevant nuclei as an initial step. This is nowadays almost exclusively performed using triple-resonance experiments. The conventional strategy utilizes one or more pairs of three dimensional spectra to obtain redundant information and thus reliable assignments. Here, a modified strategy for obtaining sequence specific assignments based on two dimensional amino acid type selective triple-resonance experiments is proposed. These experiments can be recorded with good resolution in a relatively short time. They provide very specific and redundant information, in particular on sequential connectivities, that drastically increases the ease and reliability of the assignment procedure, done either manually or in an automated fashion. The new strategy is demonstrated with the protein domain PB1 from yeast CDC24p

326

Automated error-tolerant macromolecular structure determination from multidimensional nuclear Overhauser enhancement spectra and chemical shift assignments  

Science.gov (United States)

We report substantial improvements to the previously introduced automated NOE assignment and structure determination protocol known as PASD. The improved protocol includes extensive analysis of input spectral data to create a low-resolution contact map of residues expected to be close in space. This map is used to obtain reasonable initial guesses of NOE assignment likelihoods which are refined during subsequent structure calculations. Information in the contact map about which residues are predicted to not be close in space is applied via conservative repulsive distance restraints which are used in early phases of the structure calculations. In comparison with the previous protocol, the new protocol requires significantly less computation time. We show results of running the new PASD protocol on six proteins and demonstrate that useful assignment and structural information is extracted on proteins of more than 220 residues. We show that useful assignment information can be obtained even in the case in which a unique structure cannot be determined. PMID:18668206

Kuszewski, John J.; Thottungal, Robin Augustine; Schwieters, Charles D.; Clore, G. Marius

2008-01-01

327

41 CFR 301-70.507 - May we authorize per diem if an employee discontinues a TDY assignment because of a personal...  

Science.gov (United States)

...assignment because of a personal emergency situation? 301-70.507 Section 301-70.507 Public Contracts and Property Management Federal...TDY) TRAVEL ALLOWANCES AGENCY RESPONSIBILITIES 70-INTERNAL POLICY AND PROCEDURE REQUIREMENTS...

2010-07-01

328

48 CFR 42.202 - Assignment of contract administration.  

Science.gov (United States)

...System FEDERAL ACQUISITION REGULATION CONTRACT MANAGEMENT CONTRACT ADMINISTRATION AND AUDIT SERVICES Contract Administration Services 42.202 Assignment of contract administration. (a) Delegating functions. As...

2010-10-01

329

48 CFR 1342.202 - Assignment of contract administration.  

Science.gov (United States)

...Acquisition Regulations System DEPARTMENT OF COMMERCE CONTRACT MANAGEMENT CONTRACT ADMINISTRATION Contract Administration Services 1342.202 Assignment of contract administration. The designee authorized to approve delegations of CAO...

2010-10-01

330

Efficient Role Assignment Scheme for Multichannel Wireless Mesh Networks  

Directory of Open Access Journals (Sweden)

Full Text Available a wireless mesh network (WMN is cost-effective access network architecture. The performance of multi-hop communication quickly reduces as the number of hops becomes larger. Nassiri et al. proposed a Molecular MAC protocol for autonomic assignment and use of multiple channels to improve network performance. In the Molecular MAC protocol, each node forms a shortest path-spanning tree to a gateway node linked to a wired Internet. After a tree is formed, the nodes with an even-numbered depth and an odd-numbered depth are assigned with the roles of a nucleus and an electron, respectively. After such roles are assigned, each nucleus selects an idle channel. However, this protocol has the following drawback; since the nodes with an even-numbered depth are assigned with the role of a nucleus, there are many nuclei in the topology. The number of assigned channels tends to increase, since each nucleus selects an idle channel that is not currently being occupied by its neighboring nuclei. In wireless communications networks, channels are very important resources. Thus, it is necessary to assign the minimum number of channels as little as possible. To do so, this paper proposes an efficient role assignment scheme, which can reduce the number of assigned channels by reducing the number of nodes assigned as nuclei and preventing nodes within the transmission range of each other from becoming nuclei. Based on various simulation results, the proposed scheme was verified.

Sunmyeng Kim

2013-10-01

331

Linear Assignment Maps for Correlated System-Environment States  

CERN Document Server

An assignment map is a mathematical operator that describes initial system-environment states for an open quantum systems. We reexamine the notion of assignments, introduced by Pechukas, and show the conditions for which linear assignments can account for correlations between the system and the environment. We study the role of other conditions, such as consistency and positivity of the map, and show the effects of relaxing these. Finally, we establish a connection between the violation of positivity of linear assignments and the no-broadcasting theorem.

Rodríguez-Rosario, César A; Aspuru-Guzik, Alán

2009-01-01

332

Fully automated sequence-specific resonance assignments of hetero- nuclear protein spectra  

International Nuclear Information System (INIS)

Full automation of the analysis of spectra is a prerequisite for high-throughput NMR studies in structural or functional genomics. Sequence-specific assignments often form the major bottleneck. Here, we present a procedure that yields nearly complete backbone and side chain resonance assignments starting from a set of heteronuclear three-dimensional spectra. Neither manual intervention, e.g., to correct lists obtained from peak picking before feeding these to an assignment program, nor protein-specific information, e.g., structures of homologous proteins, were required. By combining two earlier published procedures, AUTOPSY [Koradi et al. (1998) J. Magn. Reson., 135, 288-297] and GARANT [Bartels et al. (1996) J. Biomol. NMR, 7, 207-213], with a new program, PICS, all necessary steps from spectra analyses to sequence-specific assignments were performed fully automatically. Characteristic features of the present approach are a flexible design allowing as input almost any combination of NMR spectra, applicability to side chains, robustness with respect to parameter choices (such as noise levels) and reproducibility. In this study, automated resonance assignments were obtained for the 14 kD blue copper protein azurin from P. aeruginosa using five spectra: HNCACB, HNHA, HCCH-TOCSY, 15N-NOESY-HSQC and 13C-NOESY-HSQC. Peaks from these three-dimensional spectra were filtered and calibrated with the help of two two-dimensional spectra: 15N-HSQCo-dimensional spectra: 15N-HSQC and 13C-HSQC. The rate of incorrect assignments is less than 1.5% for backbone nuclei and about 3.5% when side chain protons are also considered

333

Fully automated sequence-specific resonance assignments of hetero- nuclear protein spectra  

Energy Technology Data Exchange (ETDEWEB)

Full automation of the analysis of spectra is a prerequisite for high-throughput NMR studies in structural or functional genomics. Sequence-specific assignments often form the major bottleneck. Here, we present a procedure that yields nearly complete backbone and side chain resonance assignments starting from a set of heteronuclear three-dimensional spectra. Neither manual intervention, e.g., to correct lists obtained from peak picking before feeding these to an assignment program, nor protein-specific information, e.g., structures of homologous proteins, were required. By combining two earlier published procedures, AUTOPSY [Koradi et al. (1998) J. Magn. Reson., 135, 288-297] and GARANT [Bartels et al. (1996) J. Biomol. NMR, 7, 207-213], with a new program, PICS, all necessary steps from spectra analyses to sequence-specific assignments were performed fully automatically. Characteristic features of the present approach are a flexible design allowing as input almost any combination of NMR spectra, applicability to side chains, robustness with respect to parameter choices (such as noise levels) and reproducibility. In this study, automated resonance assignments were obtained for the 14 kD blue copper protein azurin from P. aeruginosa using five spectra: HNCACB, HNHA, HCCH-TOCSY, {sup 15}N-NOESY-HSQC and {sup 13}C-NOESY-HSQC. Peaks from these three-dimensional spectra were filtered and calibrated with the help of two two-dimensional spectra: {sup 15}N-HSQC and {sup 13}C-HSQC. The rate of incorrect assignments is less than 1.5% for backbone nuclei and about 3.5% when side chain protons are also considered.

Malmodin, Daniel [Goeteborg University, Biochemistry and Biophysics (Sweden); Papavoine, Christina H.M. [Medicinal Chemistry, AstraZeneca R and D Moelndal (Sweden); Billeter, Martin [Goeteborg University, Biochemistry and Biophysics (Sweden)], E-mail: martin.billeter@bcbp.gu.se

2003-09-15

334

Integrating environmental isoscapes for spatiotemporal assignment  

Science.gov (United States)

Numerous case studies in the ecological and forensic fields have illustrated the potential utility of light stable isotopes as tracers of the geographic origin of biological materials. However, a number of critical challenges continue to limit the application of these tools, among them (1) limitations to our knowledge of isotopic values expected for materials formed at particular locations and times, (2) uncertainty in our understanding of the interplay between temporal and spatial variation in the isotope 'signature' transferred to isotopic materials, and (3) lack of robust, widely used models for quantitative statistical assessment of spatiotemporal origin and associated uncertainty. In order to acknowledge and address each of these limitations, we present new models and analysis of spatiotemporal variation in the stable isotope ratios of hydrogen, oxygen, and strontium in the environment, representing three isotope systems with strong and complementary potential for provenancing applications. We demonstrate a statistical framework for the integration of these isoscapes in assignment problems and describe how this toolkit has been made broadly accessible through the IsoMAP web-GIS portal.

Bowen, G.; Bataille, C.; Kennedy, C.; Zhang, T.; West, J.

2012-04-01

335

CERN summer experience benefits US students  

CERN Document Server

Northeastern University's programme of research experience for US undergraduates at CERN is five years old. While at CERN, the US summer students work with an assigned research group, supervised by a physicist who works with them and assigns them various tasks, allowing them to see what work as a particle physicist is like. Students perform research, take measurements, write computer programs, papers and reports, learn to use specialized software, build and test equipment, and inevitably do manual work. In short, they are expected to cover the entire range of activities that makes up experimental particle physics.

Harvey, S

2003-01-01

336

Preparation Of Expatriates For Global Assignments: Revisited  

Directory of Open Access Journals (Sweden)

Full Text Available Two contributing factors generated my interest in the above topic: 1 Within the past two to three decades, expatriate opportunities for individuals around the world have rapidly increased.  This growth has created a new frontier of  expatriate human resource issues that many Multinational Corporations (MNC’s have had difficulty resolving; 2   With the major emphasis placed upon business schools to educate students on global issues, how have they incorporated into the curricula what  we have learned about expatriate and repatriate successes and failures?

Robert L. Minter

2011-07-01

337

The Design of ADAT: A Tool for Assessing Automata-Based Assignments  

Directory of Open Access Journals (Sweden)

Full Text Available This study describes the design of an automatic assessment system for assessing an automata-based assignment. Automata concept is taught in several undergraduate computing courses such as Theory of Computation, Automata and Formal Languages and Compilers. We take two elements into consideration when assessing the student's answers; static element and dynamic element. The static element involves the number of states (initial and final as well and the number of transitions. Whilst the dynamic aspect involves executing the automata against several test data. In this work, we rely heavily on the JFLAP for drawing and executing the automata.

Zarina Shukur

2008-01-01

338

CAMRA: Chemical shift based computer aided protein NMR assignments  

International Nuclear Information System (INIS)

A suite of programs called CAMRA (Computer Aided Magnetic Resonance Assignment) has been developed for computer assisted residue-specific assignments of proteins. CAMRA consists of three units: ORB, CAPTURE and PROCESS. ORB predicts NMR chemical shifts for unassigned proteins using a chemical shift database of previously assigned homologous proteins supplemented by a statistically derived chemical shift database in which the shifts are categorized according to their residue, atom and secondary structure type. CAPTURE generates a list of valid peaks from NMR spectra by filtering out noise peaks and other artifacts and then separating the derived peak list into distinct spin systems. PROCESS combines the chemical shift predictions from ORB with the spin systems identified by CAPTURE to obtain residue specific assignments. PROCESS ranks the top choices for an assignment along with scores and confidence values. In contrast to other auto-assignment programs, CAMRA does not use any connectivity information but instead is based solely on matching predicted shifts with observed spin systems. As such, CAMRA represents a new and unique approach for the assignment of protein NMR spectra. CAMRA will be particularly useful in conjunction with other assignment methods and under special circumstances, such as the assignment of flexible regions in proteins where sufficient NOE information is generally not available. CAMRA was tested on two medium-sized proteins belonging to the chemodium-sized proteins belonging to the chemokine family. It was found to be effective in predicting the assignment providing a database of previously assigned proteins with at least 30% sequence identity is available. CAMRA is versatile and can be used to include and evaluate heteronuclear and three-dimensional experiments

339

A Comparative Study of Meta-heuristic Algorithms for Solving Quadratic Assignment Problem  

OpenAIRE

Quadratic Assignment Problem (QAP) is an NP-hard combinatorial optimization problem, therefore, solving the QAP requires applying one or more of the meta-heuristic algorithms. This paper presents a comparative study between Meta-heuristic algorithms: Genetic Algorithm, Tabu Search, and Simulated annealing for solving a real-life (QAP) and analyze their performance in terms of both runtime efficiency and solution quality. The results show that Genetic Algorithm has a better solution quality wh...

Said, Gamal Abd El-nasser A.; Mahmoud, Abeer M.; El-horbaty, El-sayed M.

2014-01-01

340

Approaches to assign security levels for radioactive substances and radiation sources  

International Nuclear Information System (INIS)

The article contains analyzed provisions on categorization of radioactive substances and radiation sources according to the extent of their potential danger. Above provisions are used in the IAEA documents and in Russian regulatory documents for differentiation of regulatory requirements to physical security. It is demonstrated that with the account of possible threats of violators, rules of physical protection of radiation sources and radioactive substances should be amended as regards the approaches to assign their categories and security levels

341

Introducing blended learning: An experience of uncertainty for students in the United Arab Emirates  

Directory of Open Access Journals (Sweden)

Full Text Available The cultural dimension of Uncertainty Avoidance is analysed in this study of an introduction to blended learning for international students. Content analysis was conducted on the survey narratives collected from three cohorts of management undergraduates in the United Arab Emirates. Interpretation of certainty with blended learning was found in: student skills with technology; student acknowledgement of course organisation; and student appreciation of online feedback. Uncertainty with the introduction of blended learning was found: when membership was assigned for group work, higher quality research methods were introduced; where course structure lacked detail, increased time was required for new and different online activities. These international students, from countries with a high score on Uncertainty Avoidance, exhibited that dimension when introduced to blended learning. The implications of these findings are discussed, and strategies suggested for introducing blended learning to international students. The limitations of the study are considered, and a direction for future research is suggested. This is the first study on undergraduates in the Middle East for the effects of a cultural dimension when introducing blended learning. The findings increase the body of knowledge that relates to learning technology in the international business classroom.

Linzi J. Kemp

2013-05-01

342

The Effect of Output Requirement on the Acquisition of Grammatical Collocations by Iranian EFL Learners  

Directory of Open Access Journals (Sweden)

Full Text Available The present study investigated: (a the effect of output requirement on the acquisition of grammatical collocations; and (b the relative efficacy of output tasks in comparison with that of input enhancement with regard to the acquisition of grammatical collocations. Ninety homogenous adult Iranian intermediate EFL learners were randomly assigned to two experimental (EG1/EG2 and a control group (CG. A pre-test was given to the three groups to measure the students’ knowledge of collocations prior to any treatment. The students in EG1 were required to do certain output tasks dealing with the collocations in focus after reading a passage whereas for those in EG2 the same target forms were visually enhanced. The students in the CG received neither visually enhanced input, nor output tasks and they were asked to simply read the passage, and answer some questions about it. After the treatment phase, a post-test was administered to measure the gains. The results indicated that both output and input enhancement exert a significant effect on the acquisition of grammatical collocations by the learners. It was also found that input enhancement group outperformed the output group; however; the observed difference was not statistically significant. Accordingly, it can be claimed that an implicit and unobtrusive method such as input enhancement can be as effective as an output task which requires actual production of language on the part of L2 learners.

Ehsan Rezvani

2011-05-01

343

PACES: Protein sequential assignment by computer-assisted exhaustive search  

International Nuclear Information System (INIS)

A crucial step in determining solution structures of proteins using nuclear magnetic resonance (NMR) spectroscopy is the process of sequential assignment, which correlates backbone resonances to corresponding residues in the primary sequence of a protein, today, typically using data from triple-resonance NMR experiments. Although the development of automated approaches for sequential assignment has greatly facilitated this process, the performance of these programs is usually less satisfactory for large proteins, especially in the cases of missing connectivity or severe chemical shift degeneracy. Here, we report the development of a novel computer-assisted method for sequential assignment, using an algorithm that conducts an exhaustive search of all spin systems both for establishing sequential connectivities and then for assignment. By running the program iteratively with user intervention after each cycle, ambiguities in the assignments can be eliminated efficiently and backbone resonances can be assigned rapidly. The efficiency and robustness of this approach have been tested with 27 proteins of sizes varying from 76 amino acids to 723 amino acids, and with data of varying qualities, using experimental data for three proteins, and published assignments modified with simulated noise for the other 24. The complexity of sequential assignment with regard to the size of the protein, the completeness of NMR data sets, and the uncertainty in resonance positions has been eertainty in resonance positions has been examined

344

Grid Computing GT4 Core and Service Deployment Assignment  

Science.gov (United States)

Grid Computing GT4 core and service deployment Assignment - The goal of this assignment is to create a Globus 4.0 (GT4) stateful Web service and deploy it in GT4 container, and test it with a simple client.

Ferner, Clayton; Wilkinson, Barry

2011-06-30

345

14 CFR 1245.109 - Assignment of title to NASA.  

Science.gov (United States)

...2010-01-01 false Assignment of title to NASA. 1245.109 Section 1245.109 ...§ 1245.109 Assignment of title to NASA. (a) The instrument of waiver set forth in § 1245.115(c) shall be voided by NASA with respect to the domestic...

2010-01-01

346

The Eco-Sculpture Assignment: Using Art to Scaffold Metacognition  

Science.gov (United States)

The Eco-Sculpture Assignment demonstrates that art may be used as a conduit to scaffold metacognition in marketing courses. Theoretical underpinnings are drawn from the literature on pedagogy used in general, marketing, and art education contexts. The assignment is described in detail, followed by examples of learner response that illustrate…

Polegato, Rosemary

2014-01-01

347

Unequivocal assignments of flavonoids from Tephrosia sp. (Fabaceae).  

Science.gov (United States)

(1)H and (13)C NMR chemical shifts of praecansone B, pongaflavone and dehydrorotenone isolated from Tephrosia egregia Sandw and obovatin from T. toxicaria Pers. were unambiguously assigned by 1D and 2D NMR experiments including (1)H, (1)H COSY, gHMQC and gHMBC, allowing the correction of literature assignments. PMID:19306481

Arriaga, A M C; Lima, J Q; Vasconcelos, J N; de Oliveira, M C F; Andrade-Neto, M; Santiago, G M P; Uchoa, D E A; Malcher, G T; Mafezoli, J; Braz-Filho, R

2009-06-01

348

ICT Teachers' Assigned Roles and Expectations from Them  

Science.gov (United States)

The aim of this study was to provide a better understanding of ICT teachers' assigned position and to determine school administrators' and other teachers' perceptions towards ICT teachers and these teachers' positions, and to reveal the similar and discrepant aspects of their tertiary education and the roles (work and responsibilities) assigned to…

Topu, Fatma Burcu; Goktas, Yuksel

2012-01-01

349

Allowing Students to Select Deliverables for Peer Review: Analysis of a Free-Selection Protocol  

DEFF Research Database (Denmark)

This study analyzes the benefits and limitations of a “free-selection” peer assignment protocol by comparing them to the widely implemented “assigned-pair” protocol. The primary motivation was to circumvent the issues that often appear to the instructors implementing peer review activities with pre-assigned groups, without posing additional workload to the instructor or diminishing the learning outcomes. In the study, 36 sophomore students in a Computer Networking course were randomly assigned into two conditions: 20 in Assigned-Pair, where the students worked in pre-defined dyad, and 17 in Free-Selection, where students were able to explore and select peer work for review. Result analysis showed a very strong tendency in favor of the Free-Selection students regarding both domain specific (conceptual) and domain-general (reviewing) knowledge.

Papadopoulos, Pantelis M.; Lagkas, Thomas

2011-01-01

350

Optimal Erasure Protection Assignment for Scalable Compressed Data with Small Channel Packets and Short Channel Codewords  

Directory of Open Access Journals (Sweden)

Full Text Available We are concerned with the efficient transmission of scalable compressed data over lossy communication channels. Recent works have proposed several strategies for assigning optimal code redundancies to elements in a scalable data stream under the assumption that all elements are encoded onto a common group of network packets. When the size of the data to be encoded becomes large in comparison to the size of the network packets, such schemes require very long channel codes with high computational complexity. In networks with high loss, small packets are generally more desirable than long packets. This paper proposes a robust strategy for optimally assigning elements of the scalable data to clusters of packets, subject to constraints on packet size and code complexity. Given a packet cluster arrangement, the scheme then assigns optimal code redundancies to the source elements subject to a constraint on transmission length. Experimental results show that the proposed strategy can outperform previously proposed code redundancy assignment policies subject to the above-mentioned constraints, particularly at high channel loss rates.

Johnson Thie

2004-03-01

351

DRUG REGULATORY STATUS ASSIGNMENT CRITERIA: A CONTRAST AMONG 2 COUNTRIES  

Directory of Open Access Journals (Sweden)

Full Text Available After a laborious and extravagant procedure the drug finally enters the market for use. But who determines the new drug status as a prescription only or an OTC? There is a clear cut contrast between the US and India with respect to their assignment guidelines and the future prospect of a new drug. In the US the regulatory status of the approved drug is determined as per the FDA guidelines (FDCA of 1938 in accordance with the Durham-Humphrey act of 1951 which depicts the criteria required for a pharmaceutical product to be marketed as a prescription drug or an OTC product. CDSCO headed by the DCGI is the authority responsible for determining the regulatory status which acts as per the regulations listed in Drugs and Cosmetics Act of 1940 in India. The US regulatory system stipulates the malleability for the inter conversion of the drugs regulatory status known as “Rx to OTC switch” which is deficient in India. Perfect implementation of regulations in India will promote effective use of OTC’s and forestall illicit sale of prescription drugs as OTC’s.

Anoop Paruchuri*, Vini Pavithran , M. Pavani , S. Selvamuthukumaran and G. P. Mohanta

2013-01-01

352

From nationwide standardized testing to school-based alternative embedded assessment in Israel: Students' performance in the matriculation 2000 project  

Science.gov (United States)

Matriculation 2000 was a 5-year project aimed at moving from the nationwide traditional examination system in Israel to a school-based alternative embedded assessment. Encompassing 22 high schools from various communities in the country, the Project aimed at fostering deep understanding, higher-order thinking skills, and students' engagement in learning through alternative teaching and embedded assessment methods. This article describes research conducted during the fifth year of the Project at 2 experimental and 2 control schools. The research objective was to investigate students' learning outcomes in chemistry and biology in the Matriculation 2000 Project. The assumption was that alternative embedded assessment has some effect on students' performance. The experimental students scored significantly higher than their control group peers on low-level assignments and more so on assignments that required higher-order thinking skills. The findings indicate that given adequate support and teachers' consent and collaboration, schools can transfer from nationwide or statewide standardized testing to school-based alter-native embedded assessment.

Dori, Yehudit J.

2003-01-01

353

The Daycare Assignment : A Dynamic Matching Problem  

DEFF Research Database (Denmark)

We study the problem of centralized allocation of children to public daycares, illustrated by the case of Denmark. Our framework applies more broadly to problems of dynamic matching in which there is entry and exit of agents over time; for example, it can be used to study the school choice problem once student mobility is taken into account. First, we show that the Gale-Shapley deferred acceptance mechanism adapted to the dynamic problem always yields a stable matching. However, we show that there does not exist any mechanism that is both stable and strategy-proof. We also show that the well-known Top Trading Cycles mechanism is neither Pareto efficient nor strategy-proof. Finally, a mechanism in which parents sequentially choose menus of schools is both strategy-proof and Pareto efficient.

Kennes, John; Monte, Daniel

2014-01-01

354

The Pedagogical Anatomy of Peer-Assessment: Dissecting a peerScholar Assignment  

Directory of Open Access Journals (Sweden)

Full Text Available Peer-assessment is a process wherein students grade the work of their peers rather than relying on an expert. With the recent advent of online tools for peer-assessment [1] it is possible to utilize peer-assessment within any course context, even extremely large courses, with virtually no logistic or economic barriers. Given this potential for widespread use, the present paper highlights the pedagogical value of peer-assessment by breaking down a specific assignment and highlighting the manner in which the learning experienced by students maps onto prominent categorizations of strong pedagogy. We argue that peer-assessment provides a powerful compliment to multiple-choice testing by providing support for the sort of deep, critical and creative learning that is simply not possible to either encourage or assess via multiple- choice.

Dwayne E. Paré

2009-10-01

355

Creative Classroom Assignment Through Database Management.  

Science.gov (United States)

The Faculty Scheduling System (FSS), a database management system designed to give administrators the ability to schedule faculty in a fast and efficient manner is described. The FSS, developed using dBASE III, requires an IBM compatible microcomputer with a minimum of 256K memory. (MLW)

Shah, Vivek; Bryant, Milton

1987-01-01

356

7 CFR 601.1 - Functions assigned.  

Science.gov (United States)

...other and to people—and how human activities affect those...water, air, plant, and animal conservation including erosion...for civic-oriented groups to share knowledge and resources in a...required to provide the local share of the costs; obtain real...

2010-01-01

357

47 CFR 101.147 - Frequency assignments.  

Science.gov (United States)

...non-GSO MSS operator's feeder link earth station complex interfere...commencement of LMDS auctions, feeder link earth station complexes...following requirements: no feeder link earth station complex may...the Office of Management and Budget as of June 1993, using...

2010-10-01

358

Alimentação na escola como forma de atender às recomendações nutricionais de alunos dos Centros Integrados de Educação Pública (CIEPS School meal programs as a means to meet nutritional requirements for students in the Integrated Public School Centers (CIEPS  

Directory of Open Access Journals (Sweden)

Full Text Available Avalia-se o consumo alimentar de 244 crianças amostradas utilizando-se o registro dos alimentos por elas ingeridos, durante três dias não consecutivos da semana. Analisa-se a adequação de energia e nutrientes de acordo com o padrão definido para a população brasileira. Observa-se que a dieta dos escolares revela-se, em média, deficiente em energia: as refeições consumidas no âmbito dos CIEPs não alcançam 70% de adequação. Verifica-se que, inversamente, o conteúdo protéico das dietas apresenta-se muito acima do preconizado. Ressalta-se a satisfatória adequação das refeições consumidas no âmbito dos CIEPs quanto às vitaminas A, tiamina, riboflavina e niacina. Merece destaque a surpreendente adequação das dietas dos escolares em relação ao ácido ascórbico. Contribui para esse resultado a presença freqüente de frutas cítricas nas refeições da escola. Com relação ao ferro, constata-se que, com exceção dos escolares mais velhos, todos os demais exibem dietas que ultrapassam 90% de adequação. Quanto ao cálcio, nota-se que as dietas da maioria (exceto a dos alunos de maior idade alcançam 100% de adequação. Resultados do estudo mostram necessidade de corrigir falhas do conteúdo nutricional das refeições distribuídas na escola, pois as mesmas constituem parte fundamental do consumo alimentar dos alunos dos CIEPs.This study evaluates food intake of 244 children between ages 7-13 years using records of ingested foods on three non-consecutive days. The study analyzes energy and nutrient adequacy based on standards for the Brazilian population. Diet was generally found to be energy-deficient: meals consumed at the CIEPs met less than 70% of the requirement. On the other hand, protein was well above recommended levels. Worthy of note was the adequacy of meals in the CIEPs as to vitamin A, thiamin, riboflavin, and niacin, as well as the surprising adequacy of ascorbic acid, resulting from the frequent presence of citrus fruits in school meals. Except for older students, all schoolchildren studied had greater than 90% minimum iron intake. As for calcium, again except for older ones, consumption was 100% or more of minimum required levels. Results showed the need to correct flaws in the nutritional content of school meals, which are central to dietary intake for CIEP students.

Marina Vieira da Silva

1998-01-01

359

32P and 2-dimensional NMR methodology for assignment of 31P and 2H signals of oligonucleotides  

International Nuclear Information System (INIS)

Because of spectral overlap, even with 2-D methods, 1H signal assignments in oligonucleotides much longer than tetramers is exceedingly difficult. However, by chemically introducing site-specific 0-17, 0-18, and S labeling in the phosphoryl groups of oligonucleotides, it is now possible to unambiguously assign the 32P peaks. Thus, it is possible to assign all three phosphate 31P signals of the oligonucleotide tetramer d(ApGpCpT) by site-specific introduction of the three different oxygen isotopes into the three different phosphate diesters. Using two-dimensional 31P/1H correlated spectral methods the authors can also unambiguously identify the 1H NMR signals coupled to the assigned 31P signals. In the latter, only those protons which are scalar coupled to the 31P nucleus are observed in the 2-D heteronuclear spectrum. Finally by the 1H/1H COSY and 1H NOESY they can identify the other protons of the oligonucleotides. This new methodology is not dependent upon any assumed B-DNA structure as is required in other recent 2-D oligonucleotide assignment techniques. Assignment of signals in the actinomycin D intercalating d(ApGpCpT) tetramer complex, d(CGCAGAATTCGCG), and lac operator pseudo-fragment, d(TGTGAGCGCTCACA), are now possible

360

RDC derived protein backbone resonance assignment using fragment assembly  

International Nuclear Information System (INIS)

Experimental residual dipolar couplings (RDCs) in combination with structural models have the potential for accelerating the protein backbone resonance assignment process because RDCs can be measured accurately and interpreted quantitatively. However, this application has been limited due to the need for very high-resolution structural templates. Here, we introduce a new approach to resonance assignment based on optimal agreement between the experimental and calculated RDCs from a structural template that contains all assignable residues. To overcome the inherent computational complexity of such a global search, we have adopted an efficient two-stage search algorithm and included connectivity data from conventional assignment experiments. In the first stage, a list of strings of resonances (CA-links) is generated via exhaustive searches for short segments of sequentially connected residues in a protein (local templates), and then ranked by the agreement of the experimental 13C? chemical shifts and 15N-1H RDCs to the predicted values for each local template. In the second stage, the top CA-links for different local templates in stage I are combinatorially connected to produce CA-links for all assignable residues. The resulting CA-links are ranked for resonance assignment according to their measured RDCs and predicted values from a tertiary structure. Since the final RDC ranking of CA-links includes all assignable residues anlinks includes all assignable residues and the assignment is derived from a “global minimum”, our approach is far less reliant on the quality of experimental data and structural templates. The present approach is validated with the assignments of several proteins, including a 42 kDa maltose binding protein (MBP) using RDCs and structural templates of varying quality. Since backbone resonance assignment is an essential first step for most of biomolecular NMR applications and is often a bottleneck for large systems, we expect that this new approach will improve the efficiency of the assignment process for small and medium size proteins and will extend the size limits assignable by current methods for proteins with structural models.

361

48 CFR 52.222-27 - Affirmative Action Compliance Requirements for Construction.  

Science.gov (United States)

...clause, means the Federal Social Security number used on the...with all employees having responsibility for hiring, assignment...schools with minority and female students, and to minority and female...employee identification number, social security number,...

2010-10-01

362

American Indian and White Students Talking about Ethnic Identity in Teacher Education Programs: Helping Teacher Education Students Know Themselves as Cultural Beings.  

Science.gov (United States)

Describes a classroom assignment designed to help teacher educators contrast how American Indian and white European American students develop their ethnic identities in teacher education programs. The paper discusses the context and ideas that generated this self-study, offering student excerpts to illustrate the processes these students travel in…

Pewewardy, Cornel

2002-01-01

363

Motivation of engineering students in higher education  

OpenAIRE

This paper examines motivational factors affecting Higher Education (HE) students in the Faculty of Technology at the University of Portsmouth. A reliable identification of motivational factors would usefully inform pedagogical interventions. Students who are more intrinsically motivated may benefit from less prescriptive assignments which offer more freedom to choose from ‘formative’ assessment topics in which they have a greater personal interest. For those who are more extrinsically mo...

Nick Savage; Roy Birch; Eleni Noussi

2011-01-01

364

Student Perceptions of Learner-Centered Teaching  

OpenAIRE

The learner-centered paradigm departs from traditional teaching models by focusing on students more than teachers and learning more than teaching. Thus, classes are more egalitarian; they emphasize critical thinking, active learning, and real-world assignments. Graduate students in learner-centered classrooms were surveyed about perceptions of their experiences in relation to the key dimensions of the learner-centered paradigm and noted that the approach contributed to their feeling respected...

DeDe Wohlfarth; Daniel Sheras; Bennett, Jessica L.; Bethany Simon; Pimentel, Jody H.; Gabel, Laura E.

2008-01-01

365

Assigning continuing education credit to enduring materials.  

Science.gov (United States)

Accreditation and approval criteria require that provider units calculate credit for enduring materials in a logical and defensible manner. Many nurses use enduring materials to stay up-to-date in their areas of practice. Most professional nursing journals include at least one article that is available for continuing education credit. Face-to-face activities do not fit into the budgets or schedules of many nurses. PMID:22214411

DeSilets, Lynore D

2012-01-01

366

Gene family assignment-free comparative genomics  

OpenAIRE

Abstract Background The comparison of relative gene orders between two genomes offers deep insights into functional correlations of genes and the evolutionary relationships between the corresponding organisms. Methods for gene order analyses often require prior knowledge of homologies between all genes of the genomic dataset. Since such information is hard to obtain, it is common to predict homologous groups based on sequence similarity. These hypothetical groups of homologou...

Doerr Daniel; Thévenin Annelyse; Stoye Jens

2012-01-01

367

Mirror versus naive assignment in chiral models for the nucleon  

CERN Document Server

In the framework of chiral model(s) implementing linear realization of chiral symmetry, we investigate the low-energy phenomenological properties of the nucleon and its chiral partner (identified with either N(1535) or N(1650)) in the naive assignment and compare the results with the ones obtained in the mirror assignment. We find that, within the naive assignment, we are not able to reproduce the experimental value of the isospin-odd scattering length, while the mirror assignment is in good agreement with it for both choices N(1535) and N(1650). The isospin-even scattering length is not yet conclusive in either assignment because it depends crucially on the poorly known scalar mesonic sector. The decay with $\\Gamma_{N(1535)\\rightarrow N\\eta}$ turns out to be far too small in both the naive and mirror assignments, while $\\Gamma_{N(1650)\\rightarrow N\\eta}$ is described correctly by both of them. In conclusions, the mirror assignment seems to provide a better description of baryons, but further studies are need...

Gallas, Susanna

2013-01-01

368

Essay Writing in Biology: An Example of Effective Student Learning.  

Science.gov (United States)

The views of first-year biology students on an essay writing assignment were evaluated through a questionnaire. Makes a series of recommendations to help students develop improved writing strategies, minimize the possible difficulties encountered, and allow the writing exercise to be an integral part of the learning process. (AIM)

Zeegers, Petrus; Giles, Lynne

1996-01-01

369

Effects of Information on College Students' Perceptions of Antidepressant Medication  

Science.gov (United States)

The authors examined the impact of pharmaceutical companies' advertisements on college students' perceptions of depression and concomitant treatment with antidepressants among 13 male and 31 female undergraduates from a midwestern university. The students were randomly assigned to groups that read either pharmaceutical company advertisements or…

Frankenberger, Kristi A.; Frankenberger, William R.; Peden, Blaine F.; Hunt, Heather L.; Raschick, Christopher M.; Steller, Emily G.; Peterson, Jaclyn A.

2004-01-01

370

Media Images: Do They Influence College Students' Body Image?  

Science.gov (United States)

Body image perception and body mass index (BMI) among college students exposed and not exposed to photographs of models were compared. Classes were assigned to receive a presentation with or without photographs of models incorporated. Students (n = 184) completed a survey about body/weight satisfaction, height, weight, and the Contour Drawing…

Hill, Gina Jarman

2009-01-01

371

Motivational Interviewing for Smoking Cessation among College Students  

Science.gov (United States)

Motivational interviewing has shown some success as an intervention for college student cigarette smokers. We tested the efficacy and process of a two session motivational-interviewing-based smoking intervention compared to an assessment/information session. College student participants assigned to the motivational interviewing condition did not…

Bolger, Kelly; Carter, Kimberly; Curtin, Lisa; Martz, Denise M.; Gagnon, Sandy G.; Michael, Kurt D.

2010-01-01

372

Structure-based protein NMR assignments using native structural ensembles  

Energy Technology Data Exchange (ETDEWEB)

An important step in NMR protein structure determination is the assignment of resonances and NOEs to corresponding nuclei. Structure-based assignment (SBA) uses a model structure ('template') for the target protein to expedite this process. Nuclear vector replacement (NVR) is an SBA framework that combines multiple sources of NMR data (chemical shifts, RDCs, sparse NOEs, amide exchange rates, TOCSY) and has high accuracy when the template is close to the target protein's structure (less than 2 A backbone RMSD). However, a close template may not always be available. We extend the circle of convergence of NVR for distant templates by using an ensemble of structures. This ensemble corresponds to the low-frequency perturbations of the given template and is obtained using normal mode analysis (NMA). Our algorithm assigns resonances and sparse NOEs using each of the structures in the ensemble separately, and aggregates the results using a voting scheme based on maximum bipartite matching. Experimental results on human ubiquitin, using four distant template structures show an increase in the assignment accuracy. Our algorithm also improves the robustness of NVR with respect to structural noise. We provide a confidence measure for each assignment using the percentage of the structures that agree on that assignment. We use this measure to assign a subset of the peaks with even higher accuracy. We further validate our algorithm on data for two additional proteins with NVR. We then show the general applicability of our approach by applying our NMA ensemble-based voting scheme to another SBA tool, MARS. For three test proteins with corresponding templates, including the 370-residue maltose binding protein, we increase the number of reliable assignments made by MARS. Finally, we show that our voting scheme is sound and optimal, by proving that it is a maximum likelihood estimator of the correct assignments.

Apaydin, Mehmet Serkan; Conitzer, Vincent; Donald, Bruce Randall [Duke University, Department of Computer Science (United States)

2008-04-15

373

A multiobjective approach towards weapon assignment in a ground-based air defence environment  

Directory of Open Access Journals (Sweden)

Full Text Available A typical ground-based air defence (GBAD environment comprises defended assets on the ground which require protection from enemy aircraft entering the defended airspace. Protection against these aircraft is afforded by means of pre-deployed ground-based weapon systems that are assigned to engage these enemy aircraft according to some pre-specified criterion or set of criteria. The conditions under which human operators have to propose assignments of weapon systems to engage these aircraft are severely stressful since time is a critical factor and there is no room for error. Some progress has already been made with respect to the design of computerised threat evaluation and weapon assignment (TEWA decision support systems (DSSs within the context of a GBAD system. However, the weapon assignment (WA component within such a TEWA DSS is typically based on a single criterion (objective. The aim in this paper is to model the WA problem as a multiobjective decision problem. A list of relevant factors (related to objectives is identified by means of feedback received from a WA questionnaire which was completed by a number of military experts. For illustrative purposes, two objectives, namely the cost of assigning weapon systems for engagement and the accumulated survival probabilities of observed threats as a result of these engagements, were isolated from these factors in order to derive a bi-objective WA model. This model is solved in the context of a simulated, but realistic, GBAD environment by means of an existing multiobjective solution technique called the Nondominated Sorting Genetic Algorithm II.

DP Lötter

2013-06-01

374

Water on the sun: line assignments based on variational calculations.  

Science.gov (United States)

The infrared spectrum of hot water observed in a sunspot has been assigned. The high temperature of the sunspot (3200 K) gave rise to a highly congested pure rotational spectrum in the 10-micrometer region that involved energy levels at least halfway to dissociation. Traditional spectroscopy, based on perturbation theory, is inadequate for this problem. Instead, accurate variational solutions of the vibration-rotation Schrödinger equation were used to make assignments, revealing unexpected features, including rotational difference bands and fewer degeneracies than anticipated. These results indicate that a shift away from perturbation theory to first principles calculations is necessary in order to assign spectra of hot polyatomic molecules such as water. PMID:9219686

Polyansky, O L; Zobov, N F; Viti, S; Tennyson, J; Bernath, P F; Wallace, L

1997-07-18

375

Graphical interpretation of Boolean operators for protein NMR assignments  

International Nuclear Information System (INIS)

We have developed a graphics based algorithm for semi-automated protein NMR assignments. Using the basic sequential triple resonance assignment strategy, the method is inspired by the Boolean operators as it applies 'AND'-, 'OR'- and 'NOT'-like operations on planes pulled out of the classical three-dimensional spectra to obtain its functionality. The method's strength lies in the continuous graphical presentation of the spectra, allowing both a semi-automatic peaklist construction and sequential assignment. We demonstrate here its general use for the case of a folded protein with a well-dispersed spectrum, but equally for a natively unfolded protein where spectral resolution is minimal

376

Graphical interpretation of Boolean operators for protein NMR assignments.  

Science.gov (United States)

We have developed a graphics based algorithm for semi-automated protein NMR assignments. Using the basic sequential triple resonance assignment strategy, the method is inspired by the Boolean operators as it applies "AND"-, "OR"- and "NOT"-like operations on planes pulled out of the classical three-dimensional spectra to obtain its functionality. The method's strength lies in the continuous graphical presentation of the spectra, allowing both a semi-automatic peaklist construction and sequential assignment. We demonstrate here its general use for the case of a folded protein with a well-dispersed spectrum, but equally for a natively unfolded protein where spectral resolution is minimal. PMID:18762868

Verdegem, Dries; Dijkstra, Klaas; Hanoulle, Xavier; Lippens, Guy

2008-09-01

377

A note on the assignments of Rydberg states of COS  

Science.gov (United States)

Assignments of the Rydberg states which converge to the respective X-tilde and B-tilde ion states of the COS(+) ion are reported. The assignments were made based on previously established orderings for the quantum defects of isoelectronic molecules. The Rydberg series I and II, which converge to the X-tilde 2 Pi state of COS(+), and the series III, IV, V, VI and VII, which converge to the B-tilde 2 Sigma + state, are assigned to molecular orbitals characterized by predominant sulfur orbitals, in contrast to those converging to the C-tilde states, which are characterized by oxygen atomic orbitals.

Wu, C. Y. R.

1982-01-01

378

Assignment of phycocyanobilin in HMPT using triple resonance experiments.  

Science.gov (United States)

A complete assignment of all resonances of a small organic molecule is a prerequisite for a structure determination using NMR spectroscopy. This is conventionally obtained using a well-established strategy based on COSY, HMQC and HMBC spectra. In case of phycocyanobilin (PCB) in HMPT this strategy was unsuccessful due to the symmetry of the molecule and extreme signal overlap. Since (13)C and (15)N labeled material was available, an alternative strategy for resonance assignment was used. Triple resonance experiments derived from experiments conventionally performed for proteins are sensitive and easy to analyze. Their application led to a complete and unambiguous assignment using three types of experiments. PMID:21815209

Röben, Marco; Schmieder, Peter

2011-09-01

379

RDC derived protein backbone resonance assignment using fragment assembly  

Energy Technology Data Exchange (ETDEWEB)

Experimental residual dipolar couplings (RDCs) in combination with structural models have the potential for accelerating the protein backbone resonance assignment process because RDCs can be measured accurately and interpreted quantitatively. However, this application has been limited due to the need for very high-resolution structural templates. Here, we introduce a new approach to resonance assignment based on optimal agreement between the experimental and calculated RDCs from a structural template that contains all assignable residues. To overcome the inherent computational complexity of such a global search, we have adopted an efficient two-stage search algorithm and included connectivity data from conventional assignment experiments. In the first stage, a list of strings of resonances (CA-links) is generated via exhaustive searches for short segments of sequentially connected residues in a protein (local templates), and then ranked by the agreement of the experimental {sup 13}C{sub {alpha}} chemical shifts and {sup 15}N-{sup 1}H RDCs to the predicted values for each local template. In the second stage, the top CA-links for different local templates in stage I are combinatorially connected to produce CA-links for all assignable residues. The resulting CA-links are ranked for resonance assignment according to their measured RDCs and predicted values from a tertiary structure. Since the final RDC ranking of CA-links includes all assignable residues and the assignment is derived from a 'global minimum', our approach is far less reliant on the quality of experimental data and structural templates. The present approach is validated with the assignments of several proteins, including a 42 kDa maltose binding protein (MBP) using RDCs and structural templates of varying quality. Since backbone resonance assignment is an essential first step for most of biomolecular NMR applications and is often a bottleneck for large systems, we expect that this new approach will improve the efficiency of the assignment process for small and medium size proteins and will extend the size limits assignable by current methods for proteins with structural models.

Wang Xingsheng; Tash, Brian; Flanagan, John M.; Tian Fang, E-mail: ftian@psu.edu [Pennsylvania State University, Department of Biochemistry and Molecular Biology, College of Medicine (United States)

2011-02-15

380

Passive modifications for partial assignment of natural frequencies of mass-spring systems  

Science.gov (United States)

The inverse structural modification for assigning a subset of natural frequencies of a structure to some targeted values has been found to inevitably lead to undesired changes to the other natural frequencies of the original structure that should not have been modified, which is referred to as the frequency “spill-over” phenomenon. Passive structural modifications of mass-spring systems for partial assignment of natural frequencies without frequency “spill-over” are addressed in this paper. For two kinds of lumped mass-spring systems, i.e. simply connected in-line mass-spring systems and multiple-connected mass-spring systems, two solution methods are proposed to construct the required mass-normalised stiffness matrix, which satisfies the partial assignment requirement of natural frequencies and maintains the configuration of the original structure after modifications. The modifications are also physically realisable. Finally, some examples of lumped mass-spring systems are analysed to demonstrate the effectiveness and accuracy of the proposed methods.

Ouyang, Huajiang; Zhang, Jiafan

2015-01-01

381

WRITTEN EXAMS: CONCRETE SOLUTION TO SOLVE IMAGE-TEXT RELATION FOR VISUAL COMMUNICATION DESIGN STUDENTS (ART STUDENTS?  

Directory of Open Access Journals (Sweden)

Full Text Available Post modern visual culture and semiotic places great emphasis on image as well as text; consequently, learning now includes the study of both text and image that are made up of many forms of mixed media, and does not separate text from images. Visual Communication Design’s Students have seldom taken written exams, reading text, and writing assignments. Most design’s subject matter emphasize in studio productions. Thus the lecturers have seldom given exams or assignments which relate between text and images. One of design’s subject matter is photography. Most photographic lecturers had never given written exams; instead they gave photo assignments for final project. Most of the lecturers gave either written exams or studio productions, but they have seldom or never integrate the text and images. The survey research conducted on 100 communication design students in third and fifth semester, and three photographic lecturers, in Tarumanagara University. The photographic lecturers prepared learning materials, student’s presentation, and exams with combine text and images. Problem based learning was used to make students more focused on the themes and assignments. Moreover, the lecturers can facilitates student, supervise student, and provide feed back. Barrett’s photo criticism was used to help students relate text and image of photographs. Some guided question was modified from Barrett’s photo criticism model. The guided questions and images selections became important steps during delivery materials, and listed in lecturer’s presentation and student’s assignments. The guided questions and a good selection of images helped the discussion, and brought students to complex thinking.

Abdullah Sani Kamaluddin

2012-07-01

382

My Experience as Student Project Leader  

Directory of Open Access Journals (Sweden)

Full Text Available The author worked in an engineering college as a teacher. He completed one semester as a student leader of a class project in hand to investigate, write and produce. This paper describes the management process of organizing the class into groups of writers, highlighting the document into sections, assigning research topics and writing groups, and establishing deadlines for the project timetable.

SERENE WONG

2009-07-01

383

My Experience as Student Project Leader  

OpenAIRE

The author worked in an engineering college as a teacher. He completed one semester as a student leader of a class project in hand to investigate, write and produce. This paper describes the management process of organizing the class into groups of writers, highlighting the document into sections, assigning research topics and writing groups, and establishing deadlines for the project timetable.

SERENE WONG

2009-01-01

384

Dark Themes in Books Get Students Reading  

Science.gov (United States)

Chanelle Brown has not found much she can relate to in the classic texts assigned in her English classes at Evanston Township High School. A top student, the junior has toiled through "The Odyssey," "All the King's Men," "The Scarlet Letter," and other standards, she said, while many of her classmates at the suburban Chicago school have given up…

Manzo, Kathleen Kennedy

2007-01-01

385

Well Spoken: Teaching Speaking to All Students  

Science.gov (United States)

All teachers at all grade levels in all subjects have speaking assignments for students, but many teachers believe they don't know how to teach speaking, and many even fear public speaking themselves. In his new book, "Well Spoken", veteran teacher and education consultant Erik Palmer shares the art of teaching speaking in any classroom. Teachers…

Palmer, Erik

2011-01-01

386

Eligibility Requirements  

Science.gov (United States)

Home > Donating Blood > Eligibility Requirements Printable Version Eligibility Requirements This page uses Javascript. Your browser either doesn't support Javascript or you have it turned off. Note to users: This list ...

387

Complete sequence-specific 1H NMR assignments for human insulin  

International Nuclear Information System (INIS)

Solvent conditions where human insulin could be studied by high-resolution NMR were determined. Both low pH and addition of acetonitrile were required to overcome the protein's self-association and to obtain useful spectra. Two hundred eighty-six 1H resonances were located and assigned to specific sites on the protein by using two-dimensional NMR methods. The presence and position of numerous dNN sequential NOE's indicate that the insulin conformation seen in crystallographic studies is largely retained under these solution conditions. Slowly exchanging protons were observed for seven backbone amide protons and were assigned to positions A15 and A16 and to positions B15-B19. These amides all occur within helical regions of the protein

388

Throughput Improvement with Discrete Pilot Signal Assignment and Iterative Channel Identification for MQRD-PCM/OFDM  

Science.gov (United States)

In MIMO systems, the channel identification is important to distinguish transmitted signals from multiple transmit antennas. One of the most typical channel identification schemes is to employ a code division multiplexing (CDM) based scheme in which a unique spreading code is assigned to distinguish both BS and MS antenna elements. However, by increasing the number of base stations and transmit antenna elements, large spreading codes and pilot symbols are required to distinguish the received power from all the connectable BS, as well as to identify all the CSI for the combination of transmitter and receiver antenna elements. Furthermore, the complexity of maximum likelihood detection (MLD) for implementation of MIMO is a considerable work. To reduce these problems, in this paper, we propose the parallel detection algorithm using multiple QR decompositions with permuted channel matrix (MQRD-PCM) with discrete pilot signal assignment and iterative channel identification for MIMO/OFDM.

Ahn, Chang-Jun

389

Rapid identification of ligand-binding sites by using an assignment-free NMR approach.  

Science.gov (United States)

In this study, we developed an assignment-free approach for rapid identification of ligand-binding sites in target proteins by using NMR. With a sophisticated cell-free stable isotope-labeling procedure that introduces (15)N- or (13)C-labels to specific atoms of target proteins, this approach requires only a single series of ligand titrations with labeled targets. Using titration data, ligand-binding sites in the target protein can be identified without time-consuming assignment procedures. We demonstrated the feasibility of this approach by using structurally well-characterized interactions between mitogen-activated protein (MAP) kinase p38? and its inhibitor 2-amino-3-benzyloxypyridine. Furthermore, we confirmed the recently proposed fatty acid binding to p38? and confirmed the fatty acid-binding site in the MAP kinase insert region. PMID:24171460

Kodama, Yuya; Takeuchi, Koh; Shimba, Nobuhisa; Ishikawa, Kohki; Suzuki, Ei-ichiro; Shimada, Ichio; Takahashi, Hideo

2013-11-27

390

Viscosity: Student Page  

Science.gov (United States)

This site teaches students to determine how fluid a liquid really is by measuring its viscosity. The Student Page has experiment procedures, lists of the required materials and key words, a formula for determining viscosity, data analysis questions, and an extension activity on calculating standard deviation. Also offered are links to the Viscosity Data Tables and the Viscosity Histogram. This activity is part of Exploring Planets in the Classroom's volcanology section.

391

Spin assignments of rotational bands in 128La  

Science.gov (United States)

Previous to the present study, three isolated rotational bands with tentative spin assignments had been reported in the literature and the authors estimated that, to meet the predicted alignments, the spin of these bands has to be increased by 4? to 5?. Based on the linking transitions observed in the present work, through the reaction 118Sn(14N,4n)128La, and the I?=5+ assignment for the bandhead of the yrast band proposed by Hayakawa, Lu, Mukai, Saitoh, Hasimoto, Komatsubara, and Furuno [Z. Phys. AZPAHEX0939-792210.1007/BF01289494 352, 241 (1995)] from ?-decay studies, the spins of these bands are reassigned. The alignments of bands in 128La deduced from the present spin assignments are consistent with the alignments of relevant bands observed in neighboring odd-A nuclei 127La, 127Ba, and 131La. Additionally, a new band with a tentative configuration assignment ?h11/2?d3/2 is reported.

Ma, K. Y.; Lu, J. B.; Yang, D.; Wang, H. D.; Liu, Y. Z.; Wu, X. G.; Zheng, Y.; He, C. Y.

2012-08-01

392

48 CFR 1442.202 - Assignment of contract administration.  

Science.gov (United States)

...Regulations System DEPARTMENT OF THE INTERIOR CONTRACT MANAGEMENT CONTRACT ADMINISTRATION AND AUDIT SERVICES Contract Administration Services 1442.202 Assignment of contract administration. (a) The decision to withhold normal...

2010-10-01

393

48 CFR 242.202 - Assignment of contract administration.  

Science.gov (United States)

...REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE CONTRACT MANAGEMENT CONTRACT ADMINISTRATION AND AUDIT SERVICES Contract Administration Services 242.202 Assignment of contract administration. (a)(i) DoD activities shall not retain...

2010-10-01

394

47 CFR 74.786 - Digital channel assignments.  

Science.gov (United States)

...translator station. Channels 5 and 6 assigned...not cause harmful interference to and must accept interference from non-Government...1982. (c) UHF channels 14 to 36 and 38...channel and the adjacent channel...

2010-10-01

395

14 CFR 1245.109 - Assignment of title to NASA.  

Science.gov (United States)

...and Space 5 2010-01-01 2010-01-01 false Assignment of title to NASA. 1245.109 Section...AERONAUTICS AND SPACE ADMINISTRATION PATENTS AND OTHER INTELLECTUAL PROPERTY RIGHTS Patent Waiver Regulations §...

2010-01-01

396

47 CFR 73.702 - Assignment and use of frequencies.  

Science.gov (United States)

...assignment protection from interference. Nevertheless, calculated...submitted no protection from interference will be provided by the I...are subject to immediate cancellation or change without hearing...Commission determines that interference or propagation...

2010-10-01

397

Membership Function Assignment for Elements of Single OWL Ontology  

OpenAIRE

This paper develops the idea of membership function assignment for OWL (Web Ontology Language) ontology elements in order to subsequently generate fuzzy rules from this ontology. The task of membership function assignment for OWL ontology elements had already been partially described, but this concerned the case, when several OWL ontologies of the same domain were available, and they were merged into a single ontology. The purpose of this paper is to present the way of membe...

Verhodubs, Olegs

2014-01-01

398

Two models for the generalized assignment problem in uncertain environment  

OpenAIRE

The generalized assignment problem (GAP) is a unique extended form of the Knapsack problem, which is tremendously practical in optimization fields. For instance, resource allocation, sequencing, supply chain management, etc. This paper tackles the GAP in uncertain environment in which the assignment costs and capacity of agents are fuzzy numbers. Two models are presented for this problem and a novel hybrid algorithm is offered using simulated annealing (SA) method and max-min fuzzy in order t...

Hamidreza Haddad; Hossein Mohammadi; Hedieh Pooladkhan

2012-01-01

399

A demand assignment control in international business satellite communications network  

Science.gov (United States)

An experimental system is being developed for use in an international business satellite (IBS) communications network based on demand-assignment (DA) and TDMA techniques. This paper discusses its system design, in particular from the viewpoints of a network configuration, a DA control, and a satellite channel-assignment algorithm. A satellite channel configuration is also presented along with a tradeoff study on transmission rate, HPA output power, satellite resource efficiency, service quality, and so on.

Nohara, Mitsuo; Takeuchi, Yoshio; Takahata, Fumio; Hirata, Yasuo

400

Configurational assignments in 168Ho and comparison with 166Ho  

Science.gov (United States)

Comparison of the six states recently observed in 168Ho with the states in 166Ho suggests configurational assignments for all six states. The validity of these assignments is strengthened by the allowed unhindered beta decay of 168Dy to the two 1+ states in 168Ho and by microscopic theoretical calculations of the quasiparticle structure of the corresponding states in 166Ho and 168Ho.

Sheline, R. K.; Kvasil, J.; Sood, P. C.

1991-12-01

401

A parametric visualization software for the assignment problem  

Directory of Open Access Journals (Sweden)

Full Text Available In this paper we present a parametric visualization software used to assist the teaching of the Network Primal Simplex Algorithm for the assignment problem (AP. The assignment problem is a special case of the balanced transportation problem. The main functions of the algorithm and design techniques are also presented. Through this process, we aim to underline the importance and necessity of using such educational methods in order to improve the teaching of Computer Algorithms.

Papamanthou Charalampos

2005-01-01

402

Dynamic traffic assignment techniques for general road networks  

OpenAIRE

Dynamic traffic assignment is widely recognised as being more useful to evaluate traffic management measures than is static counterpart, as it allows us to analyse how congestion forms and dissipates in time-varying conditions. In this thesis, both deterministic and stochastic dynamic assignments are modelled with a proper link performance function, and solved with efficient solution algorithms so that they give rise to high quality solutions. A deterministic dynamic assignm...

Han, S.

2000-01-01

403

Routing and Wavelength Assignment in All-Optical Networks  

OpenAIRE

This paper considers the problem of routing connections in a reeontigurable optical network using wavelength division multiplexing. Each connection between a pair of nodes in the network is assigned a path through the network and a wavelength on that path, such that connections whose paths share a common link in the network are assigned d]fferent wavelengths. We derive an upper bound on the carried traffic of connections (or equivalently, a lower bound on the blocking probability) for any rou...

Ramaswami, Rajiv; Sivarajan, Kumar N.

1995-01-01

404

A Patient Safety and Transitions of Care Curriculum for Third-Year Medical Students.  

Science.gov (United States)

The elderly are the most vulnerable to adverse events during and after hospitalization. This study sought to evaluate the effectiveness of a curriculum on patient safety and transitions of care for medical students during an Internal Medicine-Geriatrics Clerkship on students' knowledge, skills, and attitudes. The curriculum included didactics on patient safety, health literacy, discharge planning and transitions of care, and postdischarge visits to patients. Analysis of pre- and postassessments showed afterwards students were significantly more comfortable assessing a patient's health literacy and confident performing a medication reconciliation, providing education regarding medications, and identifying barriers during transitions. More students were able to identify the most common source of adverse events after discharge (86% vs. 62% before), risk factors for low health literacy (28% vs. 14%), and ways to assess a patient's health literacy (14% vs. 2%). It was feasible to implement a postdischarge visit assignment in an urban tertiary care setting and only required on average of approximately an one and one half hours for students to complete. PMID:25288373

Bradley, Sara M; Chang, Dennis; Fallar, Robert; Karani, Reena

2014-10-01

405

An endorsement-based approach to student modeling for planner-controlled intelligent tutoring systems  

Science.gov (United States)

An approach is described to student modeling for intelligent tutoring systems based on an explicit representation of the tutor's beliefs about the student and the arguments for and against those beliefs (called endorsements). A lexicographic comparison of arguments, sorted according to evidence reliability, provides a principled means of determining those beliefs that are considered true, false, or uncertain. Each of these beliefs is ultimately justified by underlying assessment data. The endorsement-based approach to student modeling is particularly appropriate for tutors controlled by instructional planners. These tutors place greater demands on a student model than opportunistic tutors. Numerical calculi approaches are less well-suited because it is difficult to correctly assign numbers for evidence reliability and rule plausibility. It may also be difficult to interpret final results and provide suitable combining functions. When numeric measures of uncertainty are used, arbitrary numeric thresholds are often required for planning decisions. Such an approach is inappropriate when robust context-sensitive planning decisions must be made. A TMS-based implementation of the endorsement-based approach to student modeling is presented, this approach is compared to alternatives, and a project history is provided describing the evolution of this approach.

Murray, William R.

1990-01-01

406

Student Intern Program - PotentialMentors for 2014 - 2015  

Science.gov (United States)

The student will be trained in all basic methodologies required in our studies. The student will work under the supervision of a post-doctoral fellow. The student will have the opportunity to pursue small independent projects.

407

22 CFR 62.23 - College and university students.  

Science.gov (United States)

...government of the student's home country; or (iii) An international organization of...that would require student interns to provide...care (e.g., sports or physical therapy...ii) Not place a student intern in a...

2010-04-01

408

Student Centre  

OpenAIRE

Over the years the University had several student centres, but as student numbers increased, they all became too small. When Roper Street was finally closed in 1993, construction of a new student centre could start. The centre designed by Philip Viljoen and sponsored largely by Sasol and other donors was officially opened in August 1995. The student centre is the hub of the campus for most students. It houses a large cafeteria, restaurants, coffee shops, Automatic Teller Machines (ATMs) and v...

Merwe, S. L.

2008-01-01

409

PARETO OPTIMAL SOLUTIONS FOR MULTI-OBJECTIVE GENERALIZED ASSIGNMENT PROBLEM  

Directory of Open Access Journals (Sweden)

Full Text Available

ENGLISH ABSTRACT: The Multi-Objective Generalized Assignment Problem (MGAP with two objectives, where one objective is linear and the other one is non-linear, has been considered, with the constraints that a job is assigned to only one worker – though he may be assigned more than one job, depending upon the time available to him. An algorithm is proposed to find the set of Pareto optimal solutions of the problem, determining assignments of jobs to workers with two objectives without setting priorities for them. The two objectives are to minimise the total cost of the assignment and to reduce the time taken to complete all the jobs.

AFRIKAANSE OPSOMMING: ‘n Multi-doelwit veralgemeende toekenningsprobleem (“multi-objective generalised assignment problem – MGAP” met twee doelwitte, waar die een lineêr en die ander nielineêr is nie, word bestudeer, met die randvoorwaarde dat ‘n taak slegs toegedeel word aan een werker – alhoewel meer as een taak aan hom toegedeel kan word sou die tyd beskikbaar wees. ‘n Algoritme word voorgestel om die stel Pareto-optimale oplossings te vind wat die taaktoedelings aan werkers onderhewig aan die twee doelwitte doen sonder dat prioriteite toegeken word. Die twee doelwitte is om die totale koste van die opdrag te minimiseer en om die tyd te verminder om al die take te voltooi.

S. Prakash

2012-01-01

410

Addressing AACSB Global and Technology Requirements: Exploratory Assessment of a Marketing Management Assignment  

Science.gov (United States)

The Association to Advance Collegiate Schools of Business (AACSB) standards mandate knowledge of global and technology issues. Businesses desire employees with ability to analyze international markets and to be adept with technology. Taxpayers supporting public universities and organizations hiring business school graduates expect accountability…

Greene, Scott; Bao, Yongchuan

2009-01-01

411

The Use of Specially Designed Tasks to Enhance Student Interest in the Cadaver Dissection Laboratory  

Science.gov (United States)

Cadaver dissection is a key component of anatomy education. Unfortunately, students sometimes regard the process of dissection as uninteresting or stressful. To make laboratory time more interesting and to encourage discussion and collaborative learning among medical students, specially designed tasks were assigned to students throughout…

Kang, Seok Hoon; Shin, Jwa-Seop; Hwang, Young-il

2012-01-01

412

Making Microscopy Motivating, Memorable, & Manageable for Undergraduate Students with Digital Imaging Laboratories  

Science.gov (United States)

Microscopy and precise observation are essential skills that are challenging to teach effectively to large numbers of undergraduate biology students. We implemented student-driven digital imaging assignments for microscopy in a large enrollment laboratory for organismal biology. We detail how we promoted student engagement with the material and…

Weeks, Andrea; Bachman. Beverly; Josway, Sarah; North, Brittany; Tsuchiya, Mirian T.N.

2013-01-01

413

Effects of a Value-Reappraisal Intervention on Statistics Students' Motivation and Performance  

Science.gov (United States)

The authors investigated the effects of an exploratory value-reappraisal intervention on students' motivation and performance in an undergraduate introductory statistics course. They sampled 82 students from 2 instructors' sections during both the fall and spring semesters. Students were randomly assigned within each section to either the…

Acee, Taylor W.; Weinstein, Claire Ellen

2010-01-01

414

An Analysis of a Service-Learning Project: Students' Expectations, Concerns, and Reflections  

Science.gov (United States)

A qualitative analysis of written reflective assignments during a service-learning project at a Southeastern university provide insight into students' learning, as well as a means of assessing the experience for student growth and change. Expectations and concerns of students prior to the project were compared with post-experience reflections to…

McClam, Tricia; Diambra, Joel F.; Burton, Bobbie; Fuss, Angie; Fudge, Daniel L.

2008-01-01

415

Acquisition and Transfer of Learning Strategies by Gifted and Nongifted Students.  

Science.gov (United States)

Gifted and nongifted students (n=96) in grades five-six were assigned to a free-study or one of three mnemonic conditions for learning mineral hardness levels. Both ability groups learned more in mnemonic conditions, and gifted students demonstrated an ability superior to nongifted students in employing mnemonic strategies independently in…

Scruggs, Thomas E.; Mastropieri, Margo A.

1988-01-01

416

Inquiry-Based Laboratory Activities in Electrochemistry: High School Students' Achievements and Attitudes  

Science.gov (United States)

This study aimed to investigate the effects of inquiry-based laboratory activities on high school students' understanding of electrochemistry and attitudes towards chemistry and laboratory work. The participants were 62 high school students (average age 17 years) in an urban public high school in Turkey. Students were assigned to experimental (N =…

Sesen, Burcin Acar; Tarhan, Leman

2013-01-01

417

Progress Feedback Effects on Students' Writing Mastery Goal, Self-Efficacy Beliefs, and Performance  

Science.gov (United States)

The effects of progress feedback on university students' writing mastery goal, self-efficacy beliefs, and writing performance were examined in this experiment. Students in the experimental condition (n = 42) received progress feedback on their writing assignment, whereas students in the control condition (n = 44) received feedback without progress…

Duijnhouwer, Hendrien; Prins, Frans J.; Stokking, Karel M.

2010-01-01

418

Building the Emotional Intelligence and Effective Functioning of Student Work Groups: Evaluation of an Instructional Program  

Science.gov (United States)

Group-based learning is common practice in university classrooms. Despite the frequent student complaint of social loafing from teammates, methods for teaching students how to address teamwork issues are rarely incorporated into group assignments. Students are instructed on their final product, rather than their group process. In this article, an…

Peterson, Christina Hamme

2012-01-01

419

The Effectiveness of the New 9th Grade Biology Curriculum on Students' Environmental Awareness  

Science.gov (United States)

The aim of this study was to examine the effectiveness of a new 9th grade biology curriculum on students' environmental awareness. Participants included 91 ninth grade students in a high school in Balikesir during the spring semester of the 2008-2009 academic years. Two classrooms, including 22 and 24 students respectively, were randomly assigned

Cetin, Gulcan; Nisanci, Seda Hilal

2010-01-01

420

Seeing the Chemistry around Me--Helping Students Identify the Relevance of Chemistry to Everyday Life  

Science.gov (United States)

The study attempted to determine whether the use of a series of reading and response assignments decreased students' perceptions of chemistry difficulty and enhanced students' perceptions of the relevance of chemistry in their everyday lives. Informed consent volunteer students enrolled in General Chemistry II at a community college in…

Moore, Tracy Lynn

2012-01-01

421

Feature Assignment in Perception of Auditory Figure  

Science.gov (United States)

Because the environment often includes multiple sounds that overlap in time, listeners must segregate a sound of interest (the auditory figure) from other co-occurring sounds (the unattended auditory ground). We conducted a series of experiments to clarify the principles governing the extraction of auditory figures. We distinguish between auditory “objects” (relatively punctate events, such as a dog's bark) and auditory “streams” (sounds involving a pattern over time, such as a galloping rhythm). In Experiments 1 and 2, on each trial two sounds -- an object (a vowel) and a stream (a series of tones) – were presented with one target feature that could be perceptually grouped with either source. In each block of these experiments, listeners were required to attend to one of the two sounds, and report its perceived category. Across several experimental manipulations, listeners were more likely to allocate the feature to an impoverished object if the result of the grouping was a good, identifiable object. Perception of objects was quite sensitive to feature variation (noise masking), whereas perception of streams was more robust to feature variation. In Experiment 3, the number of sound sources competing for the feature was increased to three. This produced a shift toward relying more on spatial cues than on the potential contribution of the feature to an object's perceptual quality. The results support a distinction between auditory objects and streams, and provide new information about the way that the auditory world is parsed. PMID:22288691

Gregg, Melissa K.; Samuel, Arthur G.

2012-01-01

422

Eigenvalue assignment strategies in rotor systems  

Science.gov (United States)

The work done to establish the control and direction of effective eigenvalue excursions of lightly damped, speed dependent rotor systems using passive control is discussed. Both second order and sixth order bi-axis, quasi-linear, speed dependent generic models were investigated. In every case a single, bi-directional control bearing was used in a passive feedback stabilization loop to resist modal destabilization above the rotor critical speed. Assuming incomplete state measurement, sub-optimal control strategies were used to define the preferred location of the control bearing, the most effective measurement locations, and the best set of control gains to extend the speed range of stable operation. Speed dependent control gains were found by Powell's method to maximize the minimum modal damping ratio for the speed dependent linear model. An increase of 300 percent in stable speed operation was obtained for the sixth order linear system using passive control. Simulations were run to examine the effectiveness of the linear control law on nonlinear rotor models with bearing deadband. The maximum level of control effort (force) required by the control bearing to stabilize the rotor at speeds above the critical was determined for the models with bearing deadband.

Youngblood, J. N.; Welzyn, K. J.

1986-01-01

423

32 CFR 154.6 - Standards for access to classified information or assignment to sensitive duties.  

Science.gov (United States)

...for access to classified information or assignment to sensitive duties. 154...for access to classified information or assignment to sensitive duties. ...for access to classified information or assignment to sensitive duties is...

2010-07-01

424

26 CFR 1.401(a)-13 - Assignment or alienation of benefits.  

Science.gov (United States)

...2010-04-01 false Assignment or alienation of benefits. 1.401(a)-13...1.401(a)-13 Assignment or alienation of benefits. (a) Scope of the regulations...contributions. (b) No assignment or alienation —(1) General rule....

2010-04-01

425

40 CFR 22.21 - Assignment of Presiding Officer; scheduling the hearing.  

Science.gov (United States)

...2010-07-01 false Assignment of Presiding Officer; scheduling the hearing. 22.21 Section 22.21 Protection of...Procedures § 22.21 Assignment of Presiding Officer; scheduling the hearing. (a) Assignment of Presiding...

2010-07-01

426

Designing student learning teams improving team performance in a college biology laboratory by designing learning teams based on student's intra-team function  

Science.gov (United States)

Cooperative learning is likely the most utilized form of classroom management in college science laboratory courses. Time restrictions, equipment availability and physical space limitations promote use of cooperation if for no other reason than convenience and necessity. In college laboratory courses, students are often assigned to learning teams the first day of class. Student placement in these learning teams is usually a task for the instructor in charge and may depend on student preference, proximity, or random assignment according to an arbitrary character such as the student's last name. Regardless of placement method, learning teams often experience negative outcomes due to friction between team members. This study addresses the possibility that friction is caused by intra team competition and that intra team competition can be eliminated through team design using the Intra-Team Function Assay (ITFA) (English 2001). Eight hundred and ninety one college students, in 62 sections of an introductory biology laboratory course, participated in the ITFA study during the Fall 2001, Spring 2002, and Summer 2002 semesters. Using a Latin Square all laboratory sections were assigned to one of the following groups: control, Hawthorne, or experimental. Students in the control and Hawthorne sections were assigned to student teams randomly without regard for the ITFA results, while students in the experimental group were assigned to teams dependent on their identified intra-team function. In seven out of ten grade assessments, students in the experimental group earned significantly higher grades than did students in the control group; with no significant difference in the remaining three measures. Student grades in the experimental group where significantly higher than student grades in the Hawthorne group on all team assessments with the exception of the final examination. Students in the experimental group also earned higher semester grades than did students in either the control or Hawthorne groups.

English, Lisarenee

427

Software requirements  

CERN Document Server

Without formal, verifiable software requirements-and an effective system for managing them-the programs that developers think they've agreed to build often will not be the same products their customers are expecting. In SOFTWARE REQUIREMENTS, Second Edition, requirements engineering authority Karl Wiegers amplifies the best practices presented in his original award-winning text?now a mainstay for anyone participating in the software development process. In this book, you'll discover effective techniques for managing the requirements engineering process all the way through the development cy

Wiegers, Karl E

2003-01-01

428

Effects of an Inverted Instructional Delivery Model on Achievement of Ninth-Grade Physical Science Honors Students  

Science.gov (United States)

This mixed-methods action research study was designed to assess the achievement of ninth-grade Physical Science Honors students by analysis of pre and posttest data. In addition, perceptual data from students, parents, and the researcher were collected to form a complete picture of the flipped lecture format versus the traditional lecture format. The researcher utilized a 4MAT learning cycle in two Physical Science Honors classes. One of these classes was traditionally delivered with lecture-type activities taking place inside the classroom and homework-type activities taking place at home; the other inverted, or flipped, delivered with lecture-type activities taking place outside the classroom and homework-type activities taking place inside the classroom. Existing unit pre and posttests for both classes were analyzed for differences in academic achievement. At the completion of the units, the flipped class students and parents were surveyed, and student focus groups were convened to ascertain their perceptions of the flipped classroom delivery model. Statistical analysis of posttest data revealed that there is no significant difference between the traditional lecture delivery format and the flipped delivery format. Analysis of perceptual data revealed six themes that must be considered when deciding to flip the classroom: how to hold students accountable for viewing the at-home videos, accessibility of students to the required technology, technical considerations relating to the video production, comprehension of the material both during and after viewing the videos, pedagogy of the overall flipped method, and preference for the flipped method overall. Findings revealed that students, parents, and the researcher all had a preference for the flipped class format, provided the above issues are addressed. The flipped class format encourages students to become more responsible for their learning, and, in addition, students reported that the hands-on inquiry activities done in class aided them in learning the subject matter. It is recommended, however, that before instructors decide to flip the classroom, they ensure that all students have access to needed technology, that there is a plan in place for ensuring that the students actually view the assigned videos, that they have a way to create the videos and ensure adequate quality, and that some discussion is held in class after each assigned video to ensure comprehension of the material.

Howell, Donna

429

Requirement Management Strategy  

Directory of Open Access Journals (Sweden)

Full Text Available For every organization it holds true that resources are limited. It is therefore critical for success to direct the available resources in the right directions. For this purpose it might be valuable identifying the key business processes and creating strategic plans for their future objectives. Such strategic plans would be more closely aligned with daily operational management and also enable operational improvement opportunities to surface to a strategic level. This paper focuses on the field of Requirement Management (RM. RM is considered a key business process for directing attention to creating customers value and to ensure a successful project startup. The objective of the paper is to establish an understanding of the purpose of having a RM strategy and what the content of a requirement strategy should be. A case study presenting a strategy to RM generated at Danfoss Power Electronics is presented. The results found were that defining a RM strategy proved to provide several benefits e.g. aligning and directing resources across business segments, enabling identification and assignment of roles related to requirement operations across functional areas and establishing a long term plan for how to achieve the identified future objectives.

Dagný

2014-04-01

430

Cutoff assignment strategies for enhancing randomized clinical trials.  

Science.gov (United States)

The randomized clinical trial (RCT) is the preferred method for assessing the efficacy of treatments. Recent ethical and logistical criticisms suggest that new variations of the traditional RCT are needed. Some of these criticisms may be addressed with new hybrid designs that combine random assignment with assignment by one or more cutoff values on a baseline variable (e.g., severity of illness). In a simple version of such a "cutoff-based" RTC, persons scoring below a cutoff score on a baseline measure (i.e., the least severely ill) are automatically assigned to the control-treated group, those scoring above a second, higher cutoff (i.e., the most ill) are automatically assigned to the test-treated group, and those scoring in the interval between the cutoff scores (i.e., the moderately ill) are randomly assigned to either group. Depending on the baseline score, the patient is assigned to treatment either randomly or by the need-based, clinically related baseline score. Six cutoff-based design variations are studied via simulations and compared with the traditional RCT and the single-cutoff (i.e., regression-discontinuity) design. All variations yield unbiased estimates of the treatment effect but estimates differ in efficiency, with the RCT being most efficient and the single-cutoff design being least efficient. Secondary analyses of data from the Cross-National Collaborative Study of the Effects of Alprazolam (Xanax) on panic are conducted for each variation by selectivity discarding cases from the original dataset to stimulate cutoff-based assignment. The results confirm the simulations and illustrate how cutoff-based designs might look with real data. PMID:1320557

Trochim, W M; Cappelleri, J C

1992-06-01

431

Using Graded Peer Evaluation to Improve Students' Writing Skills, Critical Thinking Ability, and Comprehension of Material in a Principles of Public Relations Course  

Science.gov (United States)

This peer-evaluation assignment encouraged students to think critically, synthesize information and write about public relations course material rather than incorporate surface information into written assignments. Because peer reviewers can improve the grades on their final papers by offering concrete suggestions to the original authors, students

Todd, Vicki; Hudson, Jerry C.

2007-01-01

432

FLAMEnGO 2.0: An enhanced fuzzy logic algorithm for structure-based assignment of methyl group resonances  

Science.gov (United States)

We present an enhanced version of the FLAMEnGO (Fuzzy Logic Assignment of Methyl Group) software, a structure-based method to assign methyl group resonances in large proteins. FLAMEnGO utilizes a fuzzy logic algorithm coupled with Monte Carlo sampling to obtain a probability-based assignment of the methyl group resonances. As an input, FLAMEnGO requires either the protein X-ray structure or an NMR structural ensemble including data such as methyl-methyl NOESY, paramagnetic relaxation enhancement (PRE), methine-methyl TOCSY data. Version 2.0 of this software (FLAMEnGO 2.0) has a user-friendly graphic interface and presents improved modules that enable the input of partial assignments and additional NMR restraints. We tested the performance of FLAMEnGO 2.0 on maltose binding protein (MBP) as well as the C-subunit of the cAMP-dependent protein kinase A (PKA-C). FLAMEnGO 2.0 can be used as a standalone method or to assist in the completion of partial resonance assignments and can be downloaded at www.chem.umn.edu/groups/veglia/forms/flamengo2-form.html.

Chao, Fa-An; Kim, Jonggul; Xia, Youlin; Milligan, Michael; Rowe, Nancy; Veglia, Gianluigi

2014-08-01

433

Generating NMR chemical shift assignments of intrinsically disordered proteins using carbon-detected NMR methods.  

Science.gov (United States)

There is an extraordinary need to describe the structures of intrinsically disordered proteins (IDPs) due to their role in various biological processes involved in signaling and transcription. However, general study of IDPs by NMR spectroscopy is limited by the poor (1)H amide chemical shift dispersion typically observed in their spectra. Recently, (13)C direct-detected NMR spectroscopy has been recognized as enabling broad structural study of IDPs. Most notably, multidimensional experiments based on the (15)N,(13)C CON spectrum make complete chemical shift assignment feasible. Here we document a collection of NMR-based tools that efficiently lead to chemical shift assignment of IDPs, motivated by a case study of the C-terminal disordered region from the human pancreatic transcription factor Pdx1. Our strategy builds on the combination of two three-dimensional (3D) experiments, (HN-flip)N(CA)CON and 3D (HN-flip)N(CA)NCO, that enable daisy chain connections to be built along the IDP backbone, facilitated by acquisition of amino acid-specific (15)N,(13)C CON-detected experiments. Assignments are completed through carbon-detected, total correlation spectroscopy (TOCSY)-based side chain chemical shift measurement. Conducting our study required producing valuable modifications to many previously published pulse sequences, motivating us to announce the creation of a database of our pulse programs, which we make freely available through our website. PMID:24333248

Sahu, Debashish; Bastidas, Monique; Showalter, Scott A

2014-03-15

434

4D experiments measured with APSY for automated backbone resonance assignments of large proteins  

Energy Technology Data Exchange (ETDEWEB)

Detailed structural and functional characterization of proteins by solution NMR requires sequence-specific resonance assignment. We present a set of transverse relaxation optimization (TROSY) based four-dimensional automated projection spectroscopy (APSY) experiments which are designed for resonance assignments of proteins with a size up to 40 kDa, namely HNCACO, HNCOCA, HNCACB and HN(CO)CACB. These higher-dimensional experiments include several sensitivity-optimizing features such as multiple quantum parallel evolution in a 'just-in-time' manner, aliased off-resonance evolution, evolution-time optimized APSY acquisition, selective water-handling and TROSY. The experiments were acquired within the concept of APSY, but they can also be used within the framework of sparsely sampled experiments. The multidimensional peak lists derived with APSY provided chemical shifts with an approximately 20 times higher precision than conventional methods usually do, and allowed the assignment of 90 % of the backbone resonances of the perdeuterated primase-polymerase ORF904, which contains 331 amino acid residues and has a molecular weight of 38.4 kDa.

Kraehenbuehl, Barbara; Boudet, Julien; Wider, Gerhard, E-mail: gsw@mol.biol.ethz.ch [ETH Zurich, Institute of Molecular Biology and Biophysics (Switzerland)

2013-06-15

435

4D experiments measured with APSY for automated backbone resonance assignments of large proteins  

International Nuclear Information System (INIS)

Detailed structural and functional characterization of proteins by solution NMR requires sequence-specific resonance assignment. We present a set of transverse relaxation optimization (TROSY) based four-dimensional automated projection spectroscopy (APSY) experiments which are designed for resonance assignments of proteins with a size up to 40 kDa, namely HNCACO, HNCOCA, HNCACB and HN(CO)CACB. These higher-dimensional experiments include several sensitivity-optimizing features such as multiple quantum parallel evolution in a ‘just-in-time’ manner, aliased off-resonance evolution, evolution-time optimized APSY acquisition, selective water-handling and TROSY. The experiments were acquired within the concept of APSY, but they can also be used within the framework of sparsely sampled experiments. The multidimensional peak lists derived with APSY provided chemical shifts with an approximately 20 times higher precision than conventional methods usually do, and allowed the assignment of 90 % of the backbone resonances of the perdeuterated primase-polymerase ORF904, which contains 331 amino acid residues and has a molecular weight of 38.4 kDa.

436

76 FR 42706 - Amendment of Inspector General Operations & Reporting System Audit, Assignment, and Timesheet...  

Science.gov (United States)

...of Inspector General Operations & Reporting System Audit, Assignment...the Inspector General Operations & Reporting (IGOR) System Audit, Assignment...The Inspector General Operations & Reporting (IGOR) System Audit,...

2011-07-19

437

Using a Cast Iron Hand-Pump to Teach Students About Water Resources and Resource Allocation  

Science.gov (United States)

Simply turning on the tap brings safe, clean, fresh-tasting water to most Americans. Students never need to consider basic concepts about water supply, including their daily water consumption and the quality of the water required for drinking. In stark contrast, the issues of water quality and quantity play a central role in people’s daily lives in the developing world. It is difficult to convey this reality to our students through lectures alone and hands-on activities are required. In order to develop an active learning based approach, we transported a traditional cast iron hand-pump and aluminum urns from Bangladesh to the United States. The hand-pump is mounted on a cooler, which acts as a water reservoir, and is now functional and easily transportable. Using this powerful demonstration tool, we have developed an active learning module we call “How far will you walk for water?”. The goal of the module is to teach students about water quantity, water quality, and resource allocation with a focus on Arsenic and Bangladesh, but the system could be applied to other areas of concern. First the students are given a quick lecture on Arsenic, its health impacts, and the extent of contamination in Bangladesh. They are then assigned a specific well, complete with a map of their village and picture of their well and a water sample (pre-spiked with arsenic to be above or below the 10 ug/L WHO limit). Next they pump the wellhead, fill an urn, walk down the hall and back, and measure the distance walked. This is compared to the distance from their village home to their private well, to safe wells belonging to neighbors and to a community well. The students then use the Hach Arsenic test kit to test the arsenic levels in their water samples and learn if their well is safe to drink. Finally, given all this information students must determine if they should continue drinking from their well or switch to a new well, even if that means making multiple, long trips each day. This module has introduced the students to important water resource concepts, such as water quality testing, usage and water delivery options. It also provides students the opportunity to consider how much time and effort to should be allocated to obtaining water given known health risks. On follow up tests we use transfer questions that ask students to select the locations for installing community wells based on a data showing contaminated wells in a village. We have utilized this module with High School, Undergraduate, and Graduate students and it excites and engages students while teaching many basic water resource issues.

Mailloux, B. J.; Radloff, K. A.

2010-12-01

438

Constrained Task Assignment and Scheduling On Networks of Arbitrary Topology  

Science.gov (United States)

This dissertation develops a framework to address centralized and distributed constrained task assignment and task scheduling problems. This framework is used to prove properties of these problems that can be exploited, develop effective solution algorithms, and to prove important properties such as correctness, completeness and optimality. The centralized task assignment and task scheduling problem treated here is expressed as a vehicle routing problem with the goal of optimizing mission time subject to mission constraints on task precedence and agent capability. The algorithm developed to solve this problem is able to coordinate vehicle (agent) timing for task completion. This class of problems is NP-hard and analytical guarantees on solution quality are often unavailable. This dissertation develops a technique for determining solution quality that can be used on a large class of problems and does not rely on traditional analytical guarantees. For distributed problems several agents must communicate to collectively solve a distributed task assignment and task scheduling problem. The distributed task assignment and task scheduling algorithms developed here allow for the optimization of constrained military missions in situations where the communication network may be incomplete and only locally known. Two problems are developed. The distributed task assignment problem incorporates communication constraints that must be satisfied; this is the Communication-Constrained Distributed Assignment Problem. A novel distributed assignment algorithm, the Stochastic Bidding Algorithm, solves this problem. The algorithm is correct, probabilistically complete, and has linear average-case time complexity. The distributed task scheduling problem addressed here is to minimize mission time subject to arbitrary predicate mission constraints; this is the Minimum-time Arbitrarily-constrained Distributed Scheduling Problem. The Optimal Distributed Non-sequential Backtracking Algorithm solves this problem. The algorithm is correct, complete, outputs time optimal schedules, and has low average-case time complexity. Separation of the task assignment and task scheduling problems is exploited here to ameliorate the effects of an incomplete communication network. The mission-modeling conditions that allow this and the benefits gained are discussed in detail. It is shown that the distributed task assignment and task scheduling algorithms developed here can operate concurrently and maintain their correctness, completeness, and optimality properties.

Jackson, Justin Patrick

439

RNA-PAIRS: RNA probabilistic assignment of imino resonance shifts  

Energy Technology Data Exchange (ETDEWEB)

The significant biological role of RNA has further highlighted the need for improving the accuracy, efficiency and the reach of methods for investigating RNA structure and function. Nuclear magnetic resonance (NMR) spectroscopy is vital to furthering the goals of RNA structural biology because of its distinctive capabilities. However, the dispersion pattern in the NMR spectra of RNA makes automated resonance assignment, a key step in NMR investigation of biomolecules, remarkably challenging. Herein we present RNA Probabilistic Assignment of Imino Resonance Shifts (RNA-PAIRS), a method for the automated assignment of RNA imino resonances with synchronized verification and correction of predicted secondary structure. RNA-PAIRS represents an advance in modeling the assignment paradigm because it seeds the probabilistic network for assignment with experimental NMR data, and predicted RNA secondary structure, simultaneously and from the start. Subsequently, RNA-PAIRS sets in motion a dynamic network that reverberates between predictions and experimental evidence in order to reconcile and rectify resonance assignments and secondary structure information. The procedure is halted when assignments and base-parings are deemed to be most consistent with observed crosspeaks. The current implementation of RNA-PAIRS uses an initial peak list derived from proton-nitrogen heteronuclear multiple quantum correlation ({sup 1}H-{sup 15}N 2D HMQC) and proton-proton nuclear Overhauser enhancement spectroscopy ({sup 1}H-{sup 1}H 2D NOESY) experiments. We have evaluated the performance of RNA-PAIRS by using it to analyze NMR datasets from 26 previously studied RNAs, including a 111-nucleotide complex. For moderately sized RNA molecules, and over a range of comparatively complex structural motifs, the average assignment accuracy exceeds 90%, while the average base pair prediction accuracy exceeded 93%. RNA-PAIRS yielded accurate assignments and base pairings consistent with imino resonances for a majority of the NMR resonances, even when the initial predictions are only modestly accurate. RNA-PAIRS is available as a public web-server at http://pine.nmrfam.wisc.edu/RNA/http://pine.nmrfam.wisc.edu/RNA/.

Bahrami, Arash; Clos, Lawrence J.; Markley, John L.; Butcher, Samuel E. [National Magnetic Resonance Facility at Madison (United States); Eghbalnia, Hamid R., E-mail: eghbalhd@uc.edu [University of Cincinnati, Department of Molecular and Cellular Physiology (United States)

2012-04-15

440

Physicians' charges under Medicare: assignment rates and beneficiary liability.  

Science.gov (United States)

Under Medicare's Part B program, the physician decides whether to accept assignment of claims. When assignment is accepted, the physician agrees to accept as full payment Medicare's allowed charge. Physicians' acceptance of assignment is of considerable importance in relieving the beneficiaries of the burden of the costs of medical care services. This factor and the beneficiaries' liabilities for premiums, the annual deductible, and coinsurance are analyzed in considerable detail in this report. Data from physicians' claims for services in 1975 show that 45.8 percent of the services and 47.2 percent of the charges were assigned for the aged. There were wide variations in the rate of acceptance of assignment by physician specialty, and by age, race, and residence of beneficiaries. Total beneficiary liability from the deductible, coinsurance, and from unassigned claims amounted to 37.7 percent of total physicians' charges due. When the premium which the beneficiary pays for Part B is included, beneficiary liability rises to 69.2 percent of total physicians' charges due. PMID:10309134

Ferry, T P; Gornick, M; Newton, M; Hackerman, C

1980-01-01

441

Engaging Marketing Students: Student Operated Businesses in a Simulated World  

Science.gov (United States)

Engaged students are committed and more likely to continue their university studies. Subsequently, they are less resource intensive from a university's perspective. This article details an experiential second-year marketing course that requires students to develop real products and services to sell on two organized market days. In the course,…

Russell-Bennett, Rebekah; Rundle-Thiele, Sharyn R.; Kuhn, Kerri-Ann

2010-01-01

442

Methodological Guide for the Design, Implementation and Control of Integrative Assignments in the Human Morphophysiology Discipline Guía metodológica para el diseño, ejecución y control de tareas docentes integradoras en Morfofisiología Humana  

OpenAIRE

Integrative assignments support the development of communication skills and other skills leading to the improvement of critical thinking in students, a goal they need to meet in order both, to exchange and discuss criteria and to appreciate their social progress in the assimilation of contents. This article presents a methodological guide for the design, implementation and control of integrative assignments in the Human Morphophysiology discipline. This subject is included in the Basic Biomed...

Luis Alberto Mass Sosa; Ana Margarita López Rodríguez del Rey; Milagros Lisett León Regal; Orlando Manuel Tomé López; Yanli Vazquez Villazón; Mileidis Yanelis Armas Martínez

2011-01-01

443

Student-Posed Problems  

Science.gov (United States)

As part of weekly reports,1 structured journals in which students answer three standard questions each week, they respond to the prompt, If I were the instructor, what questions would I ask or problems assign to determine if my students understood the material? An initial analysis of the results shows that some student-generated problems indicate fundamental misunderstandings of basic physical concepts. A further investigation explores the relevance of the problems to the week's material, whether the problems are solvable, and the type of problems (conceptual or calculation-based) written. Also, possible links between various characteristics of the problems and conceptual achievement are being explored. The results of this study spark many more questions for further work. A summary of current findings will be presented, along with its relationship to previous work concerning problem posing.2 1Etkina, E. Weekly Reports;A Two-Way Feedback Tool, Science Education, 84, 594-605 (2000). 2Mestre, J.P., Probing Adults Conceptual Understanding and Transfer of Learning Via Problem Posing, Journal of Applied Developmental Psychology, 23, 9-50 (2002).

Harper, Kathleen A.; Etkina, Eugenia

2002-10-01

444

A Comparative Study of Meta-heuristic Algorithms for Solving Quadratic Assignment Problem  

Directory of Open Access Journals (Sweden)

Full Text Available Quadratic Assignment Problem (QAP is an NP-hard combinatorial optimization problem, therefore, solving the QAP requires applying one or more of the meta-heuristic algorithms. This paper presents a comparative study between Meta-heuristic algorithms: Genetic Algorithm, Tabu Search, and Simulated annealing for solving a real-life (QAP and analyze their performance in terms of both runtime efficiency and solution quality. The results show that Genetic Algorithm has a better solution quality while Tabu Search has a faster execution time in comparison with other Meta-heuristic algorithms for solving QAP.

Gamal Abd El-Nasser A. Said

2014-01-01

445

Identifying students with self-report of asthma and respiratory symptoms in an urban, high school setting.  

Science.gov (United States)

Strategies for identifying urban youth with asthma have not been described for high school settings. African-American high school students are rarely included in asthma studies, despite a high risk of asthma mortality when compared to other age and race groups. Identification and follow-up of children with uncontrolled respiratory symptoms are necessary to reduce the burden of asthma morbidity and mortality, especially in underserved areas. We describe a process used to identify high school students who could benefit from intervention based on self-report of asthma and/or respiratory symptoms, and the costs associated with symptom-identification. Letters announcing a survey were mailed to parents of 9th-11th graders by an authorized vendor managing student data for the school district. Scan sheets with student identifiers were distributed to English teachers at participating schools who administered the survey during a scheduled class. Forms were completed by 5,967 of the 7,446 students assigned an English class (80% response). Although prevalence of lifetime asthma was 15.8%, about 11% of students met program criteria for enrollment through report of an asthma diagnosis and recent symptoms, medication use, or health care utilization. Another 9.2% met criteria by reported symptoms only. Cost of symptom-identification was $5.23/student or $32.29/program-eligible student. There is a need for school-based asthma programs targeting urban adolescents, and program initiation will likely require identification of students with uncontrolled symptoms. The approach described was successfully implemented with a relatively high response rate. Itemized expenses are presented to facilitate modifications to reduce costs. This information may benefit providers, researchers, or administrators targeting similar populations. PMID:17200800

Joseph, Christine L M; Baptist, Alan P; Stringer, Sonja; Havstad, Suzanne; Ownby, Dennis R; Johnson, Christine Cole; Williams, L Keoki; Peterson, Edward L

2007-01-01

446

Requirements for optimal learning environment for an online project risk management game  

Directory of Open Access Journals (Sweden)

Full Text Available Normal.dotm 0 0 1 350 1998 UTS 16 3 2453 12.0 0 false 18 pt 18 pt 0 0 false false false Several authors have questioned the effectiveness of using lecture-based teaching to provide students with enough confidence to apply project risk management. Gaming was proposed as a solution. However, despite widespread use of games in teaching project management, it is still not clear what conditions provide optimal learning through games. Another shortcoming with the existing games is oversimplification.  This paper addresses these shortcomings and proposes a game design that captures real-life challenges associated with applying the project risk management process; a design that prompts an appreciation for project complexity as well as providing students with the opportunity to experience the consequences of ignoring or following the risk management process. The paper also identifies and elaborates on the requirements for optimum learning, and distinguishes between two types of requirements: 1 learning requirements, and 2 qualitative requirements.  Learning requirements identify the learning outcomes of the game. These requirements were identified through structured and semi-structured interviews with senior project managers from several management-consulting firms. The challenges and the corresponding tactics that are adopted in practice in order to manage project risks were thus identified and ranked. These results are also presented in light of supporting literature. The challenges and associated tactics were mapped into a set of eight requirements representing the learning outcomes of the game. These requirements were then mapped to the design using four instructional methods: a briefing lecture, a team-based assignment, an online computer simulation, and a debriefing lecture. All these methods were linked by a real-life project case and executed in a gaming context to improve engagement.  Qualitative requirements represent important conditions that must be present for optimal learning. These were identified through structured interviews with continuing education students taking a master's degree in project management. This empirical study resulted in four qualitative requirements that must be considered in the game design: 1 ownership, 2 relevance, 3 feedback, and 4 adaptation.  The paper also presents the evaluation results of the game design. The purpose of the evaluation was to examine the game's ability to capture the two sets of requirements identified above.    

Bassam Hussein

2012-01-01

447

Conditions for compatibility of quantum-state assignments  

International Nuclear Information System (INIS)

Suppose N parties describe the state of a quantum system by N possibly different density operators. These N state assignments represent the beliefs of the parties about the system. We examine conditions for determining whether the N state assignments are compatible. We distinguish two kinds of procedures for assessing compatibility, the first based on the compatibility of the prior beliefs on which the N state assignments are based and the second based on the compatibility of predictive measurement probabilities they define. The first procedure leads to a compatibility criterion proposed by Brun, Finkelstein, and Mermin [BFM, Phys. Rev. A 65, 032315 (2002)]. The second procedure leads to a hierarchy of measurement-based compatibility criteria which is fundamentally different from the corresponding classical situation. Quantum mechanically none of the measurement-based compatibility criteria is equivalent to the BFM criterion

448

Airport Gate Assignment A Hybrid Model and Implementation  

CERN Document Server

With the rapid development of airlines, airports today become much busier and more complicated than previous days. During airlines daily operations, assigning the available gates to the arriving aircrafts based on the fixed schedule is a very important issue, which motivates researchers to study and solve Airport Gate Assignment Problems (AGAP) with all kinds of state-of-the-art combinatorial optimization techniques. In this paper, we study the AGAP and propose a novel hybrid mathematical model based on the method of constraint programming and 0 - 1 mixed-integer programming. With the objective to minimize the number of gate conflicts of any two adjacent aircrafts assigned to the same gate, we build a mathematical model with logical constraints and the binary constraints. For practical considerations, the potential objective of the model is also to minimize the number of gates that airlines must lease or purchase in order to run their business smoothly. We implement the model in the Optimization Programming L...

Li, Chendong

2009-01-01

449

Simulation Optimization of the Crossdock Door Assignment Problem  

CERN Document Server

The purpose of this report is to present the Crossdock Door Assignment Problem, which involves assigning destinations to outbound dock doors of Crossdock centres such that travel distance by material handling equipment is minimized. We propose a two fold solution; simulation and optimization of the simulation model simulation optimization. The novel aspect of our solution approach is that we intend to use simulation to derive a more realistic objective function and use Memetic algorithms to find an optimal solution. The main advantage of using Memetic algorithms is that it combines a local search with Genetic Algorithms. The Crossdock Door Assignment Problem is a new domain application to Memetic Algorithms and it is yet unknown how it will perform.

Aickelin, Uwe

2008-01-01

450

Graphical interpretation of Boolean operators for protein NMR assignments  

Energy Technology Data Exchange (ETDEWEB)

We have developed a graphics based algorithm for semi-automated protein NMR assignments. Using the basic sequential triple resonance assignment strategy, the method is inspired by the Boolean operators as it applies 'AND'-, 'OR'- and 'NOT'-like operations on planes pulled out of the classical three-dimensional spectra to obtain its functionality. The method's strength lies in the continuous graphical presentation of the spectra, allowing both a semi-automatic peaklist construction and sequential assignment. We demonstrate here its general use for the case of a folded protein with a well-dispersed spectrum, but equally for a natively unfolded protein where spectral resolution is minimal.

Verdegem, Dries [Universite des Sciences et Technologies de Lille, Unite de Glycobiologie Structurale et Fonctionelle, UMR 8576 CNRS, IFR 147 (France); Dijkstra, Klaas [University of Groningen, Department of Biophysical Chemistry (Netherlands); Hanoulle, Xavier; Lippens, Guy [Universite des Sciences et Technologies de Lille, Unite de Glycobiologie Structurale et Fonctionelle, UMR 8576 CNRS, IFR 147 (France)], E-mail: guy.lippens@univ-lille1.fr

2008-09-15

451

Analysis of a demand assignment TDMA blocking system  

Science.gov (United States)

This paper presents an analysis of a multichannel Time Division Multiple Acces (TDMA) blocking system. Such a system is of interest for real-time voice-traffic applications. The effects of different traffic-assignment algorithms, traffic loads, number of channels, number of time slots, and number of traffic nodes on system performance are studied, where performance is measured by the probability that an incoming message will be blocked. An approximate analytical solution is found, the results of which compare exceedingly well with results obtained from computer simulation. Also derived is a rigorous lower bound on the blocking probability. Collectively, these results indicate that, for most systems of interest, blocking probability is insensitive to the assignment algorithm used. The performance of an assignment algorithm that is simplest to implement is therefore nearly optimal.

Barta, S. M.; Honig, M. L.

1984-01-01

452

Baryon and lepton number assignment in E6 models  

International Nuclear Information System (INIS)

In E6 models there are new particles whose baryon number is not uniquely assigned. We point out that the baryon and lepton number assignment to these particles can change the baryogenesis scenario significantly. We consider a left-right symmetric extension of the standard model in which the (B-L) quantum number is gauged. The identification of (B-L) with a generator of E6 is used to define the baryon and lepton numbers for the exotic particles in a way that the electroweak baryon and lepton number anomaly corresponding to the SU(2)L group vanishes; i.e., there is no nonperturbative baryon or lepton number violation during the electroweak phase transition. We study some consequences of the new assignment

453

Optimal assignment of incoming flights to baggage carousels at airports  

DEFF Research Database (Denmark)

The problem considered in this report is an assignment problem occurring at airports. This problem concerns the assignment of baggage carousels in baggage claim halls to arriving aircraft (baggage carousel assignment problem). This is a highly dynamic problem since disruptions frequently occur during operations. We introduce a basic static model that can be adapted to the layout of different airports. Afterwards we show how a decision support system based on a MIP-model can be designed in a dynamic real world environment. The system supports the decisions of the dispatcher during daily operations. Computational results for a real world problem at Frankfurt Airport are presented. At Frankfurt Airport the suggested solution method was successfully implemented and is running now for over half an year. The experiences show that the system increases the quality of the dispatching process and in general is a substantial support in decision making.

Barth, Torben C.

2013-01-01

454

Task Assignment Heuristics for Parallel and Distributed CFD Applications  

Science.gov (United States)

This paper proposes a task graph (TG) model to represent a single discrete step of multi-block overset grid computational fluid dynamics (CFD) applications. The TG model is then used to not only balance the computational workload across the overset grids but also to reduce inter-grid communication costs. We have developed a set of task assignment heuristics based on the constraints inherent in this class of CFD problems. Two basic assignments, the smallest task first (STF) and the largest task first (LTF), are first presented. They are then systematically costs. To predict the performance of the proposed task assignment heuristics, extensive performance evaluations are conducted on a synthetic TG with tasks defined in terms of the number of grid points in predetermined overlapping grids. A TG derived from a realistic problem with eight million grid points is also used as a test case.

Lopez-Benitez, Noe; Djomehri, M. Jahed; Biswas, Rupak

2003-01-01

455

Impact of group music therapy on the depression mood of college students  

OpenAIRE

The goal of this study was to examine the effects of group music therapy on depression and mental health among college students. 80 students participated in this study, with 40 assigned to control group and other 40 assigned to experimental group. The results showed that after the group music therapy, for the experimental group, the depression scores have reduced significantly and the mental health scores have improved, while for the control group, no significant difference was obtained on th...

Haizhen Wang; Jinliang Wang; Dajun Zhang

2011-01-01

456

Two models for the generalized assignment problem in uncertain environment  

Directory of Open Access Journals (Sweden)

Full Text Available The generalized assignment problem (GAP is a unique extended form of the Knapsack problem, which is tremendously practical in optimization fields. For instance, resource allocation, sequencing, supply chain management, etc. This paper tackles the GAP in uncertain environment in which the assignment costs and capacity of agents are fuzzy numbers. Two models are presented for this problem and a novel hybrid algorithm is offered using simulated annealing (SA method and max-min fuzzy in order to obtain near optimal solution. Computational experiments validate the efficiency of proposed method.

Hamidreza Haddad

2012-04-01

457

A Strategy for Assigning New Concepts in the MEDLINE Database  

OpenAIRE

The MeSH® indexing done in MEDLINE® is engineered by humans. Humans define the MeSH concepts and human indexers assign MeSH terms to MEDLINE records. Methods have been designed in an attempt to assign MeSH terms to MEDLINE documents automatically with some success. Methods have also been designed to locate useful phrases as potential concepts for indexing. However, little work has been done on the problem of how one might automatically index with the concepts represented b...

Kim, Won; Wilbur, W. John

2005-01-01

458

A tracked approach for automated NMR assignments in proteins (TATAPRO)  

International Nuclear Information System (INIS)

A novel automated approach for the sequence specific NMR assignments of 1HN, 13C?, 13C?, 13C'/1H? and 15N spins in proteins, using triple resonance experimental data, is presented. The algorithm, TATAPRO (Tracked AuTomated Assignments in Proteins) utilizes the protein primary sequence and peak lists from a set of triple resonance spectra which correlate 1HN and 15N chemical shifts with those of 13C?, 13C? and 13C'/1H?. The information derived from such correlations is used to create a 'masterlist' consisting of all possible sets of 1HNi, 15Ni, 13C?i, 13C?i, 13C'i/1H?i, 13C?i-1, 13C?i-1 and 13C'i-1/ 1H?i-1 chemical shifts. On the basis of an extensive statistical analysis of 13C? and 13C? chemical shift data of proteins derived from the BioMagResBank (BMRB), it is shown that the 20 amino acid residues can be grouped into eight distinct categories, each of which is assigned a unique two-digit cosigned a unique two-digit code. Such a code is used to tag individual sets of chemical shifts in the masterlist and also to translate the protein primary sequence into an array called ppsarray. The program then uses the masterlist to search for neighbouring partners of a given amino acid residue along the polypeptide chain and sequentially assigns a maximum possible stretch of residues on either side. While doing so, each assigned residue is tracked in an array called assigarray, with the two-digit code assigned earlier. The assigarray is then mapped onto the ppsarray for sequence specific resonance assignment. The program has been tested using experimental data on a calcium binding protein from Entamoeba histolytica (Eh-CaBP, 15 kDa) having substantial internal sequence homology and using published data on four other proteins in the molecular weight range of 18-42 kDa. In all the cases, nearly complete sequence specific resonance assignments (> 95%) are obtained. Furthermore, the reliability of the program has been tested by deleting sets of chemical shifts randomly from the masterlist created for the test proteins

459

Baryon and Lepton Number Assignment in $E_6$ Models  

OpenAIRE

In $E_6$ models there are new particles whose baryon number is not uniquely assigned. We point out that the baryon and lepton number assignment to these particles can change the baryogenesis scenario significantly. We consider left-right symmetric extension of the standard model in which $(B-L)$ quantum number is gauged. The identification of $(B-L)$ with a generator of $E_6$ is used to define the baryon and lepton numbers for the exotic particles in a way that the electrowe...

Paschos, Emmanuel A.; Sarkar, Utpal; So, Hiroto

1995-01-01

460

Configuration assignment to ground state rotational band of 184Au  

International Nuclear Information System (INIS)

Recently, the rotational level scheme of 184Au has been investigated by means of in-beam ? -ray spectroscopy techniques. On the basis of a comparison of the measured and calculated B(M1)/B(E2) ratios, Li et al. suggested a highly mixed character for the ground state two quasiparticle (2qp) rotational band of 184Au. In this paper, the configuration assignment to ground state band of 184Au is revisited in terms of Two Quasi-Particle Rotor Model (TQPRM) calculations. Our results further strengthen the earlier proposed configuration assignments to this band

461

A new probabilistic transformation of belief mass assignment  

CERN Document Server

In this paper, we propose in Dezert-Smarandache Theory (DSmT) framework, a new probabilistic transformation, called DSmP, in order to build a subjective probability measure from any basic belief assignment defined on any model of the frame of discernment. Several examples are given to show how the DSmP transformation works and we compare it to main existing transformations proposed in the literature so far. We show the advantages of DSmP over classical transformations in term of Probabilistic Information Content (PIC). The direct extension of this transformation for dealing with qualitative belief assignments is also presented.

Dezert, Jean

2008-01-01

462

Molecular Structures and Absorption Spectra Assignment of Corrole NH Tautomers  

OpenAIRE

The individual absorption spectra of the two NH tautomers of 10-(4,6-dichloropyrimidin-5-yl)-5,15-dimesitylcorrole are assigned on the basis of the Gouterman four-orbital model and a quantum chemical TD-DFT study. The assignment indicates that the red-shifted T1 tautomer is the one with protonated pyrrole nitrogen atoms N(21), N(22) and N(23), whereas the blue-shifted T2 tautomer has pyrrole nitrogen atoms N(21), N(22) and N(24) protonated. A wave-like nonplanar distortion of the macrocycle i...

Beenken, Wichard; Presselt, Martin; Ngo, Thien H.; Dehaen, Wim; Maes, Wouter; Kruk, Mikalai

2014-01-01

463

A method to assign failure rates for piping reliability assessments  

International Nuclear Information System (INIS)

This paper reports on a simplified method that has been developed to assign failure rates that can be used in reliability and risk studies of piping. The method can be applied on a line-by-line basis by identifying line and location specific attributes that can lead to piping unreliability from in-service degradation mechanisms and random events. A survey of service experience for nuclear piping reliability also was performed. The data from this survey provides a basis for identifying in-service fail