Not All Library Analytics are Created Equal: LibAnswers to the Rescue!     

Mariana Lapidus 《Medical reference services quarterly》2019,38(1):41-55

The reasons for implementing and the advantages of switching to the Reference Analytics system, a part of the Springshare LibAnswers platform, for collecting reference statistics at a three-campus university library are described. The benefits of using this web-based product are highlighted based on the comparison with the previously used analytical tools and the annual statistical data. Transitioning to Reference Analytics allowed librarians to take advantage of such features, as seamless access to reference transactions, easy customization, cross-tabulation, and data visualization, proving beneficial for overall library reference services.  相似文献   

Profiles of self-perceived competencies and conceptions of academic writing in university students / Perfiles de competencias y concepciones sobre la escritura académica en estudiantes universitarios     

Núria Castells  Mar Mateos  Elena Martín  Isabel Solé  Mariana Miras 《Cultura y Educación》2015,27(3):569-593

Abstract

This study analyses Spanish undergraduates’ perceptions of their competency in academic writing, as well as their perception of the criteria that define its quality. We identified student profiles and examined their relationship with (1) certain sample characteristics, such as years of university experience, area of study and students’ gender, and (2) variables related to the process of writing, namely the students’ perception of the writing process and the importance they attribute to its characteristics. The data obtained came from the European Writing Survey (EUWRIT) which was administered to 1,044 students from nine Spanish universities. Profiles were identified by means of k-means cluster analysis. The relationship between these profiles and the variables studied was examined by means of chi-squared analyses and univariate ANOVAs. Two profiles were identified: students who are confident about their writing skills and who acknowledge the importance of writing in their field of knowledge; and students who are relatively confident about their writing ability and who consider writing to be relatively important in their subject area.  相似文献   

Phaseguide-assisted blood separation microfluidic device for point-of-care applications     

Linfeng Xu  Hun Lee  Mariana Vanderlei Brasil Pinheiro  Phil Schneider  Deekshitha Jetta  Kwang W. Oh 《Biomicrofluidics》2015,9(1)

We propose a blood separation microfluidic device suitable for point-of-care (POC) applications. By utilizing the high gas permeability of polydimethylsiloxane (PDMS) and phaseguide structures, a simple blood separation device is presented. The device consists of two main parts. A separation chamber with the phaseguide structures, where a sample inlet, a tape-sealed outlet, and a dead-end ring channel are connected, and pneumatic chambers, in which manually operating syringes are plugged. The separation chamber and pneumatic chambers are isolated by a thin PDMS wall. By manually pulling out the plunger of the syringe, a negative pressure is instantaneously generated inside the pneumatic chamber. Due to the gas diffusion from the separation chamber to the neighboring pneumatic chamber through the thin permeable PDMS wall, low pressure can be generated, and then the whole blood at the sample inlets starts to be drawn into the separation chamber and separated through the phaseguide structures. Reversely, after removing the tape at the outlet and manually pushing in the plunger of the syringe, a positive pressure will be created which will cause the air to diffuse back into the ring channel, and therefore allow the separated plasma to be recovered at the outlet on demand. In this paper, we focused on the study of the plasma separation and associated design parameters, such as the PDMS wall thickness, the air permeable overlap area between the separation and pneumatic chambers, and the geometry of the phaseguides. The device required only 2 μl of whole blood but yielding approximately 0.38 μl of separated plasma within 12 min. Without any of the requirements of sophisticated equipment or dilution techniques, we can not only separate the plasma from the whole blood for on-chip analysis but also can push out only the separated plasma to the outlet for off-chip analysis.  相似文献   

Musikalische Aktivitäten von Kindern und Jugendlichen     

Mariana Grgic  Ivo Züchner 《Zeitschrift für Erziehungswissenschaft》2013,16(3):123-141

This article deals with playing a musical instrument as an important form of music related activities in the development and socialization of children and youth. The authors discuss aspects of arts education and reflect concepts of interest. They focus on the musical socialization and its contexts of today, so the question, which children and young persons are playing an instrument as well as a systematic analysis of places where adolescents are playing music. The self-organized and non-goal oriented learning processes in music activities are focused, reflecting theories of social inequalities. The results of the empirical findings show differences related to social class in playing an instrument and its choice, but not in places where music is done. Especially if adolescents play an instrument with corresponding interest, intensity, forms of activities and motifs of playing do not differ by social background.  相似文献   

Combined Use of Online Tutorials and Hands-On Group Exercises in Bibliographic Instruction for Pharmacy Students     

Mariana Lapidus  Sarah K. McCord  William W. McCloskey  Maria D. Kostka-Rokosz 《Medical reference services quarterly》2013,32(4):383-399

This study describes the new blended learning methodology implemented in a Drug Literature Evaluation course for pharmacy students that involves combined use of online tutorials and in-class group exercises. Assignment grades earned by 909 students enrolled in the course before and after the new methods were implemented (2008–2010) were studied to measure student performance. Course evaluations were analyzed in order to ascertain students’ perceptions. The hybrid approach used to deliver the course content allowed students to perform at the same level as traditional didactic teaching. Students’ evaluations reported a positive educational experience and favorable perceptions of the new course design.  相似文献   

No Landscape of the Mind     

Mariana B. Davenport 《The Educational forum》2013,77(4)

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Upper Secondary Students’ Understanding of the Use of Multiple Models in Biology Textbooks—The Importance of Conceptual Variation and Incommensurability     

Niklas Gericke  Mariana Hagberg  Doris Jorde 《Research in Science Education》2013,43(2):755-780

In this study we investigate students’ ability to discern conceptual variation and the use of multiple models in genetics when reading content-specific excerpts from biology textbooks. Using the history and philosophy of science as our reference, we were able to develop a research instrument allowing students themselves to investigate the occurrence of multiple models and conceptual variation in Swedish upper secondary textbooks. Two excerpts using different models of gene function were selected from authentic textbooks. Students were given the same questionnaire-instrument after reading the two texts, and the results were compared. In this way the students themselves made a classification of the texts which could then be compared with the researchers’ classification of the texts. Forty-one upper secondary students aged 18–19 participated in the study. Nine of the students also participated in semi-structured interviews. Students recognized the existence of multiple models in a general way, but had difficulty discerning the different models and the conceptual variation that occurs between them in the texts. Further they did not recognize the occurrence of incommensurability between multiple models. Students had difficulty in transforming their general knowledge of multiple models into an understanding of content specific models of gene function in the textbooks. These findings may have implications for students’ understanding of conceptual knowledge because research has established textbooks as one of the most influential aspects in the planning and execution of biology lessons, and teachers commonly assign reading passages to their students without further explanation.  相似文献   

The Moon Investigation: Instructional Strategies for Elementary Science Methods     

Abell  Sandra  George  Melissa  Martini  Mariana 《Journal of Science Teacher Education》2002,13(2):85-100

Journal of Science Teacher Education -  相似文献   

Reliability and validity of Yo-Yo tests in 9- to 16-year-old football players and matched non-sports active schoolboys     

Susana C. A. Póvoas  Carlo Castagna  José M. C. Soares  Pedro M. R. Silva  Mariana V. M. F. Lopes 《European Journal of Sport Science》2016,16(7):755-763

The purpose of this study was to examine the test–retest reliability and construct validity of three age-adapted Yo-Yo intermittent tests in football players aged 9–16 years (n?=?70) and in age-matched non-sports active boys (n?=?72). Within 7 days, each participant performed two repetitions of an age-related intensity-adapted Yo-Yo intermittent test, i.e. the Yo-Yo intermittent recovery level 1 children's test for 9- to 11-year-olds; the Yo-Yo intermittent endurance level 1 for 12- to 13-year-olds and the Yo-Yo intermittent endurance level 2 test for 14- to 16-year-olds. Peak heart rate (HR_peak) was determined for all tests. The distance covered in the tests was 57% (1098?±?680 vs. 700?±?272?m), 119% (2325?±?778 vs. 1062?±?285?m) and 238% (1743?±?460 vs. 515?±?113?m) higher (p?≤?.016), respectively for football-trained than for non-sports active boys aged 9–11, 12–13 and 14–16 years. The typical errors of measurement for Yo-Yo distance, expressed as a percentage of the coefficient of variation (confidence interval), were 11.1% (9.0–14.7%), 10.1% (8.1–13.7%) and 8.5% (6.7–11.7%) for football players aged 9–11, 12–13 and 14–16 years, respectively, with corresponding values of 9.3% (7.4–12.8%), 10.2% (8.1–14.0%) and 8.5% (6.8–11.3%) for non-sports active boys. Intraclass correlation coefficient values for test–retest were excellent in both groups (range: 0.844–0.981). Relative HR_peak did not differ significantly between the groups in test and retest. In conclusion, Yo-Yo intermittent test performances and HR_peak are reliable for 9- to 16-year-old footballers and non-sports active boys. Additionally, performances of the three Yo-Yo tests were seemingly better for football-trained than for non-sports active boys, providing evidence of construct validity.  相似文献   

Student–Mentor Relationships and Students' College Attitudes     

Chenoa S. Woods  Mariana Preciado 《Journal of Education for Students Placed at Risk》2016,21(2):90-103

Many college and SAT preparation programs are designed to improve the postsecondary success of traditionally marginalized students. In addition to academic preparation, students' social and emotional preparation is important for the transition from high school to college. Mentors can serve as role models and supports to aid students in this development. Using student survey data and hierarchical linear modeling, this study examines the influences of student–mentor relationships within an SAT program setting on students' college attitudes. Results indicate that these relationships can positively influence students' college attitudes, particularly for students who have lower baseline SAT scores. Recommendations for future research and practice are provided.  相似文献