Diagnostic accuracy of UriSed automated urine microscopic sediment analyzer and dipstick parameters in predicting urine culture test results

Introduction

Urinary tract infection (UTI) is one of the most common types of infection. Currently, diagnosis is primarily based on microbiologic culture, which is time- and labor-consuming. The aim of this study was to assess the diagnostic accuracy of urinalysis results from UriSed (77 Electronica, Budapest, Hungary), an automated microscopic image-based sediment analyzer, in predicting positive urine cultures.

Materials and methods:

We examined a total of 384 urine specimens from hospitalized patients and outpatients attending our hospital on the same day for urinalysis, dipstick tests and semi-quantitative urine culture. The urinalysis results were compared with those of conventional semi-quantitative urine culture.

Results:

Of 384 urinary specimens, 68 were positive for bacteriuria by culture, and were thus considered true positives. Comparison of these results with those obtained from the UriSed analyzer indicated that the analyzer had a specificity of 91.1%, a sensitivity of 47.0%, a positive predictive value (PPV) of 53.3% (95% confidence interval (CI) = 40.8–65.3), and a negative predictive value (NPV) of 88.8% (95% Cl = 85.0–91.8%). The accuracy was 83.3% when the urine leukocyte parameter was used, 76.8% when bacteriuria analysis of urinary sediment was used, and 85.1% when the bacteriuria and leukocyturia parameters were combined. The presence of nitrite was the best indicator of culture positivity (99.3% specificity) but had a negative likelihood ratio of 0.7, indicating that it was not a reliable clinical test.

Conclusions:

Although the specificity of the UriSed analyzer was within acceptable limits, the sensitivity value was low. Thus, UriSed urinalysis results do not accurately predict the outcome of culture.     

Turkish preservice science teachers’ efficacy beliefs regarding science teaching and their beliefs about classroom management

The purpose of this study was to explore Turkish preservice science teachers’ science teaching efficacy and classroom management beliefs. Data in this study were collected from a total number of 584 preservice science teachers utilizing the Science Teaching Efficacy Belief Instrument and the attitudes and beliefs on classroom control (ABCC) inventory. Data analysis indicated that preservice science teachers generally expressed positive efficacy beliefs regarding science teaching. In addition, results revealed that participants were interventionist on the instructional management dimension, whereas they favored non-interventionist style on the people management dimension of the ABCC inventory.     

Developing a Scale of Attitudes Toward Seeking Psychological Help: Validity and Reliability Analyses

The present study was conducted to develop the scale for Attitudes Toward Seeking Psychological Help (ASPH). Four dimensions of ASPH were determined by using factor analysis, which was conducted with 356 participants. The dimensions were named as confidence for getting psychological help; beliefs about the functions of psychological help; endurance against labelling, and self-disclosure. Reliability coefficient was found as satisfactory in the scale (.88) and subscales (.76, .77, .76, and .68). Test-retest reliability was .99. Validity of the scale was examined by using discriminant validity analysis and it was observed as sufficient. The results of the study showed that ASPH has an identifiable factor structure and it is a reliable and valid scale.     

Science teacher candidates’ perceptions about roles and nature of scientific models

Background: Scientific models have important roles in science and science education. For scientists, they provide a means for generating new knowledge or function as an accessible summary of scientific studies. In science education, on the other hand, they are accessible representations of abstract concepts, and are also organizational frameworks to teach and learn inaccessible facts. As being indispensable parts of learning and doing science, use of scientific models in science classes should be reinforced. At this point, uncovering pre-service science teachers’ (PSTs) understandings of scientific models are of great importance since they will design and conduct teaching situations for their students. Purpose: The study aimed to provide an answer to the research question: What understandings do PSTs possess about scientific models? Sample: The sample of the study consisted of 14 PSTs enrolled in an Elementary Science Education program in a public university in Ankara, Turkey. Design and methods: Data were collected by using an open-item instrument and semi-structured interviews, and were analyzed by using qualitative data analysis methods. Results: Findings showed that PSTs held fragmented views of models by having informed views in some aspects while having naïve views on others. That is, although they displayed a constructivist orientation by acknowledging the presence of multiple models for the same phenomenon depending on scientists’ perspectives or creativity involved in the production of scientific knowledge, PSTs also expressed logical positivist views by believing that models should be close to the real phenomena that they represent. Findings further revealed that PSTs generally conceptualized models’ materialistic uses, yet they did not think much about their theoretical and conceptual uses. It was observed that roles like reifying and visualizing were overestimated and models were dominantly characterized as three-dimensional representations. Conclusions: It is clear that PSTs, having difficulties in grasping the concept of models, would possibly have problems in planning their lessons effectively and would not develop accurate concepts in their students. These findings apparently support the need for appropriate pedagogic training of PSTs to scientifically reflect on and professionally make use of models in science classes.     

The effects of mind games in math and grammar courses on the achievements and perceived problem-solving skills of secondary school students

The goal of this study is to determine the effectiveness of mind games played by secondary school sixth grade students as classroom activities in math and grammar courses on their perceived problem-solving skills and achievements. In the quantitative part of the study, the nonequivalent groups pre-test–post-test control group design from single-factor quasi experimental designs was used. Qualitative data collection and analysis approaches have also been used to support and explain quantitative data. The study's sample group, which was formed using a convenience sampling method, consisted of 48 sixth grade secondary school students who studied in a moderately developed city center in Turkey and their teachers. An achievement test, perceived problem-solving skills scale and semistructured interview guide were used as the data collection tools. According to the findings, the students in the experimental group who played mind games showed development in their perceived problem-solving skills and achievements compared to the control group. The opinions of the teachers and students on the effects of the mental practices were also found to be positive.     

Educating Turkish Primary School Teachers in Visual Arts: the Past and the Future

Every educational system should meet certain criteria that establish quality in teaching and learning. These criteria are often provided by aims and objectives listed in school curricula. After describing and commenting on the history of school education in Turkey, the main question posed in this research is how to change the Turkish primary school education in visual arts so that its quality will improve. After analysing the situation, this work provides an outline of how this may be achieved. In the future, the insights gained may be very useful for an incorporation of European standards into the Turkish educational system.     

Reinforcing contingencies for sex-role behaviors in preschool children

Two groups of disadvantaged Afro-American children, a total of 30 boys and 25 girls, mean age about 42 months; and two groups of middle- and upper-middle-class children, most of them white, 35 boys and 31 girls, mean age about 44.5 months, were observed for patterns of sex-role-characteristic behavior and peer and teacher response to such behavior. At all times, the children in the two experimental groups were being taught by seven women and seven or eight men, about half of whom were Afro-American, half white-Anglo, and who were mixed in the two schools by race but evenly divided by sex. Boys engaged in 16% sex-characteristic behavior, 5.7% cross-sex behavior. The same figures for girls were 18 and 6%. There were no pattern or percentage differences by race or social status of children. Women teachers gave most of their sex-role connected rewards for feminine behavior to both boys and girls. Men teachers rewarded more equably, masculine behaviors for boys, feminine behaviors for girls. Children rewarded mainly their own sex, and gave rewards for sex characteristic behavior. The pattern was even clearer for boys than for girls. In Discussion, comparisons are made with other somewhat similar studies.     

Discourse as Representation of Design Thinking and Beyond: Considering the Tripod of Architecture–Media,Education, & Practice

Discourse is often considered as a taken-for-granted notion, however, it is already a representational genre of design thinking whether written/ unwritten, spoken/unspoken, designed/ undesigned, realised/unrealised. This article explores current architectural discourse to understand its relations with the design thinking transmitted through various modes of representations in media, education and practice, and to find out how such discourse might implicitly influence design ideas. The article argues that discourse, in this context, will stand as a product in itself in architectural culture. Moreover, a cross-view of today's architectural discourses will inform us about the present state of architecture, how contemporary architects express themselves or communicate from such points of view, and what might be the emergent issues and possibilities in architecture and design representation.     

Primary school curriculum for educable mentally retarded children： A Turkish case

Educable mental retardation is a delay in acquiring basic reading, writing and counting skills emerging through late speaking and linguistic development along with social, emotional or behavioral problems. It is pointed out that such children have intelligence in the 45-74 range, and that they are incompetent in terms of language skills, perception power, memory capacity, imagination and creativeness. Primary school curriculum for educable mentally retarded children was adopted so as to implement beginning in 2001-2002 academic year. The curriculum was designed so as to apply in primary education schools where educable mentally retarded children attend or in private classes included in the body of primary education schools. It was designed in order for such children to improve their skills of understanding themselves, establishing positive social relations, adjusting to the social, technological and physical environment, and surviving independently. This current study is based on a qualitative method, and is focused on educable mentally retarded children who are at primary school age in Turkey. Having described the characteristics of such children, their needs are explained, the curriculum developed for such children is described, and teachers＇ views concerning the implementation of the curriculum are presented in this research.