Miracle-dz/UniFAR-FTUs huggingface dataset:
Test Code Quality and Its Relation to Issue Handling Performance

Automated testing is a basic principle of agile development. Its benefits include early defect detection, defect causelocalization and removal of fear to apply changes to the code. Therefore, maintaining high quality test code is essential. This study introduces a model that assesses test code quality by combining source code metrics that reflect three main aspects of test codequality: completeness, effectiveness and maintainability. The model is inspired by the Software Quality Model of the SoftwareImprovement Group which aggregates source code metrics into quality ratings based on benchmarking. To validate the model we assess the relation between test code quality, as measured by the model, and issue handling performance. An experiment isconducted in which the test code quality model is applied to <inline-formula><tex-math notation="LaTeX">$18$</tex-math><alternatives> <inline-graphic xlink:type="simple" xlink:href="zaidman-ieq1-2342227.gif"/></alternatives></inline-formula> open source systems. The test quality ratings are tested for correlation with issue handling indicators, which are obtained by mining issue repositories. In particular, we study the (1) defect resolution speed, (2) throughput and (3) productivity issue handling metrics. The results reveal a significant positive correlation between test code quality and two out of the three issue handling metrics (throughput and productivity), indicating that good test code quality positively influences issue handling performance.
MicroRNA miR-147b promotes tumor growth via targeting UBE2N in hepatocellular carcinoma

As the subfamily of noncoding RNA, microRNAs (miRNAs) broadly regulate the development of cancers, while their dysregulation and function in human hepatocellular carcinoma (HCC) remains largely unclear. Here, we found the expression level of microRNA-147b (miR-147b) is increased aberrantly in HCC tumor tissues, and its expression positively correlates to the tumor severity. In both MTT and colony formation assay, knockdown of miR-147b dramatically inhibits in vitro proliferation of HCC cell lines. More interestingly, we also performed in vivo tumorigenesis assay and found that miR-147b can regulate in vivo tumorigenesis in nude mice xenograft models. The ubiquitin-conjugating enzyme E2N (UBE2N) was identified directly and functionally targeted by miR-147b. The mRNA level of UBE2N is increased in HCC tumors or cell lines. Restoring UBE2N expression level in tumor cells leads to inhibition of cell proliferation, which mimics the effect upon miR-147b knockdown in the same cells. These data elucidated the oncogenic role of miR-147b in HCC development and progression with therapeutic target potentials.
Female College Students Working in the Sex Industry: A Hidden Population

This study carefully examines the perceptions and experiences of several women who are part of an overlooked group—college students who work in the sex industry. Interviews were conducted with students working in strip clubs or pornography. The reasons why they choose such work and how this choice impacts them are explored. Findings reveal that the women clearly recognize the time and monetary benefits as a main motivating factor for their employment in the sex industry, and they downplay the threat of violence as the main cost. The women perceive the primary cost to be the stigma they faced and the cognitive dissonance it produces as they negotiate their student and sex worker identities. They employ a variety of coping strategies to manage the negative effects of stigma, including cognitively separating themselves from the norms of the industry, justifying why they do such work, focusing on other more positive roles, avoidance through substance use, and leaving the industry. These strategies help resolve the cognitive dissonance created by their participation in sex work. This paper will highlight the ways in which faculty and staff can assist student sex workers in developing healthy coping strategies, accessing help, and persisting in their college enrollment.
Test of Models of Achromatic Transparency

Consider an achromatic disk transparent on an achromatic background formed by two adjoining rectangles, with the common border of the rectangles dividing the disk in half. Current models of achromatic transparency contend that the perceived extent of transparency of the disk depends on the luminance contrast inside the disk and on the luminance contrast in the background outside the disk. Here, a model is proposed which contends that this perceived extent is determined only by the luminance contrasts inherent in the disk: inside the disk and between the disk and the background. Two experiments were designed to determine which luminance contrasts influence transparency. In the first experiment, subjects rated the perceived extent of transparency of the disk for different combinations of the luminances of the disk and of the background. The results strengthen the view that the perceived extent of transparency depends on the luminance contrasts inherent in the disk. In the second experiment, a test was made of the possibility that luminance contrasts between adjoining areas of the background outside the disk are nonessential for transparency. The results show that transparency occurred both when the areas of the background outside the transparent region adjoined one another and when they were separated, confirming that the perceived extent of transparency depended only on luminance contrasts between adjoining areas inherent in the disk.
Teacher evaluation of student ability: what roles do teacher gender, student gender, and their interaction play?

Background: Recent decades have been marked by an extensive movement to analyze bias in people’s thinking, especially in gender-related issues. Studies have addressed the question of gender bias in classrooms on different levels—the use of gender in books, learning opportunities determined by students’ gender, or teachers’ gender preferences. Purpose: In this study, we aim to answer the question of whether and under which circumstances the interaction between teacher gender and student gender positively or negatively influences teachers’ evaluations of students’ performance, while controlling for objective measures of students’ performance. For instance, it could be possible that a teacher with the same gender as a student evaluates the student as better than opposite-gender students, independent of their objective performance. Sample: The sample consisted of n > 1,500 Finnish 6th grade students (Mage= 12.67) and their respective class teachers. Design and methods: Students completed several academic skills tests, including a mathematical thinking test, reading comprehension test, and scientific reasoning test. Furthermore, teachers provided their evaluation of each student, evaluating students’ performance in different school subjects and answering questions regarding their probability of academic success. To test whether the teacher-student gender interaction had an effect on the criterion variable, i.e. teachers’ evaluation of the students’ performance, multilevel analyses accounting for between- and within-class effects were applied. Thereby, the effect of students’ objective performance on teachers’ evaluation of the students and main effects of gender were controlled for as covariates. Results: The main results indicated that the interaction between student and teacher gender did not influence teachers’ evaluation of the students. However, regardless of their gender, teachers tended to evaluate girls as better than boys in first language performance (i.e. Finnish language) and potential for success in school. Teacher gender did not influence the evaluation. Conclusions: The results of the study suggest that the interaction between teacher and student gender is unlikely to be a source of possible bias in the evaluations of students in the Finnish educational system.
Variation in Vocabulary Development as a Function of Birth Order

Several researchers have argued for birth-order differences in the rate and style of children's early vocabulary development. However, the results of those studies that have examined these issues directly have so far proved inconclusive. In the present study, an attempt was made to examine the question of birth-order differences in children's early vocabulary development by comparing the composition and age of acquisition of the first 50 and 100 words of 9 firstborns and their younger siblings using a longitudinal maternal diary methodology. A small but significant birth-order effect was found for the age at which the 50-word milestone was reached. However, there was no significant difference in age at 100 words, and there was a strong correlation between sibling pairs on both of these measures. As regards qualitative differences, second-borns had a significantly higher percentage of frozen phrases in their first 100 words and a significantly higher percentage of deictic personal pronouns in their first 50 and 100 words. However, no differences were found in the percentage of common nouns at either measurement point. It is argued that, on balance, these results are more consistent with a “different” than a “disadvantaged” view of later-borns' early language, and that those differences that do exist may be due, at least in part, to the occurrence of a higher degree of observational learning in second-borns' early language acquisition.
School membership among students with learning disabilities and nondisabled students in a semirural high school

School reform proposals have urged that schools provide students with an enhanced sense of community, especially for at-risk youth belonging, is thought to be crucial. Given their high rate of school drop out, school membership holds special relevance for students with learning disabilities (LD). Thirty-seven mainstreamed students with LD and an equal number of nondisabled (ND) high school students were compared on five dependent variables: grades, time spent on homework, Scholastic Competence, Global Self-Worth, and school membership. School membership was assessed by Goodenow's (1993) Psychological Sense of School Membership (PSSM) scale. ND students reported higher grades and more favorable ratings of Scholastic Competence, while groups did not differ significantly on time on homework or Global Self-Worth. Also, contrary to the author's hypothesis, the groups did not differ on the PSSM. These findings are attributed to either the small size of the school in which the study was conducted or to the supportive nature of special education (i.e., resource room). Future studies are required to understand the development of school membership among students with LD. © 1998 John Wiley & Sons, Inc.
Zuckerman's Revised Alternative Five-Factor Model: Validation of the Zuckerman-Kuhlman-Aluja Personality Questionnaire in Four French-Speaking Countries

The aim of this study was to analyze the replicability of Zuckerman's revised Alternative Five-factor model in a French-speaking context by validating the Zuckerman-Kuhlman-Aluja Personality Questionnaire (ZKA–PQ) simultaneously in 4 French-speaking countries. The total sample was made up of 1,497 subjects from Belgium, Canada, France, and Switzerland. The internal consistencies for all countries were generally similar to those found for the normative U.S. and Spanish samples. A factor analysis confirmed that the normative structure replicated well and was stable within this French-speaking context. Moreover, multigroup confirmatory factor analyses have shown that the ZKA–PQ reaches scalar invariance across these 4 countries. Mean scores were slightly different for women and men, with women scoring higher on Neuroticism but lower on Sensation Seeking. Globally, mean score differences across countries were small. Overall, the ZKA–PQ seems an interesting alternative to assess both lower and higher order personality traits for applied or research purposes.
Developing the Reflective Practitioner Through Work Experience: A small-scale investigation into the benefits of integrating a range of workplace experience into a full-time professional postgraduate town planning course

Educational theory suggests that there is a clear role for work-based learning within professional education. A recent review of the postgraduate town planning course at the University of Central England provided an opportunity to extend the range of work-based experience for full-time students. Whilst existing modules emphasised the development of 'process knowledge' or 'technical expertise', the new module aimed to stimulate another aspect of 'professionalism', namely the skills of a 'reflective practitioner'. This investigation considers the development of the new 'Planning Practice' module from the perspective of educational theory, evaluation of current practices, examination of employer's attitudes and the student experience. It is concluded that the module provides a valuable and enriching addition to the professional development of full-time students.
A Tale of Two Gladiators: 'Reading' Entrepreneurs as Texts

One approach to exploring the context-particular, experiential knowledge of entrepreneurs is to treat their narrative explanations of how their firms have developed as quasi texts containing implicit, personal theories of managerial action. By drawing on cognitive and literary concepts, their personal theories are modelled as multi-element scripts that evolve and change, yielding rich and informative interpretations. It is suggested that this approach is relevant not only for entrepreneurs, but that it can also be used in both ethnographic and clinical studies.
On the relationship between time management and time estimation

The study explores the relationship between people's self-report of the use of time management practices and estimates of task duration. The hypothesis is that those who are good time managers will be good at estimating how long a future task will take (expected), how long a previously executed task has taken (retrospective) and how long a task is taking while in process (prospective). In the expected setting results indicate that those who perceive themselves as good time managers are most accurate at estimating the duration of a future task, of those who do not perceive themselves as good time managers some grossly overestimate and many underestimate to quite a considerable extent. The latter finding thus provides support for the 'planning fallacy' (Kahneman & Tversky,1979). In the prospective setting results indicate those who perceive themselves as good time managers tend to underestimate time passing. It is suggested that this is a motivational strategy designed to enhance a sense of control over time. Findings are discussed in relation to existing theories of time estimation.
THE BEST OF BOTH WORLDS: SPORTS FANS FIND GOOD SEATS AT THE BAR

This study explored public sports viewing in bars and restaurants by means of more than 200 hours of observation and informal interviewing at six sites. Grounded qualitative analysis revealed four schemas for contextualizing public sports viewing: participation in a membership community, opportunity for social interaction, access to otherwise unobtainable events, and diversionary activity. Situated between the at-home and the stadium sports experiences, public consumption of mediated sports combines the benefits of the control characterizing home television viewing and the sociability characterizing the group experience. Public consumption and production of sports transform the seeming limits of the mediated event and legitimate fan behavior to serve participatory and social needs.
Detergent‐based isolation of yeast membrane rafts

Lipid rafts have been implicated in numerous cellular processes including cell signaling, endocytosis, and even viral infection. Isolation of these lipid rafts often involves detergent treatment of the membrane to dissolve nonraft components followed by separation of raft regions in a density gradient. We present here an inquiry‐based lab series using these techniques to isolate membrane rafts from yeast cells designed for the upper division biochemistry or cell biology course laboratory. The co‐localization of a common raft‐associated protein with lipid rafts is then followed. This lab series involves undergraduate cell biology or biochemistry students in each step of the scientific process from experimental design to dissemination of their results. Additionally, this lab series reinforces concepts in membrane structure while exposing undergraduates to common techniques in cell biology and biochemistry.
Effects of continuous localized infusion of granulocyte-macrophage colony-stimulating factor and inoculations of irradiated glioma cells on tumor regression.

OBJECT Glioblastoma multiforme (GBM) is a malignant tumor of the central nervous system that directly suppresses immunological defenses in vitro and in vivo. The authors used the peripheral delivery of continuously infused granulocyte-macrophage colony-stimulating factor (GM-CSF) in the presence of irradiated tumor antigens as a tumor-specific stimulant to dendritic cells to initiate an immune response to GBM in rats. METHODS The 9L gliosarcoma tumors were established in the flanks of syngeneic Fischer 344 rats. Osmotic minipumps implanted in the animals' contralateral flanks continuously delivered recombinant GM-CSF (0, 0.1, 1, or 10 ng/day) for 28 days. Irradiated gliosarcoma cells were intermittently injected at the site of the GM-CSF infusion. Animals in the saline control group (0 ng/day GM-CSF) died on Day 59 with average tumor volumes greater than 30,000 mm3. This control group was significantly different from the GM-CSF-treated animals, which all survived with average tumor volumes that peaked on Day 23 and later regressed completely. Tumor growth as well as peak tumor volumes (5833+/-2284 mm3, 3294+/-1632 mm3, and 1979+/-1142 mm3 for 0.1, 1, and 10 ng/day GM-CSF, respectively) in the different treatment groups reflected a significant dose-response relationship with the GM-CSF concentrations. All animals treated with GM-CSF and irradiated cells were resistant to additional challenges of peripheral and intracerebral gliosarcoma, even when they were inoculated 8 months after initial immunotherapy. The colocalization of GM-CSF and inactivated tumor antigens was required to stimulate immunoprotection. To test the efficacy of a peripherally administered immunological therapy on intracerebral brain tumors the authors transplanted 10(6) gliosarcoma cells into the striatum of treated and control animals. Subcutaneous pumps that released GM-CSF (10 ng/day) and irradiated gliosarcoma cells were placed in the treated animals. The control animals all died within 31 days after intracerebral tumor implantation. In contrast, 40% of the animals receiving GM-CSF-irradiated cell vaccinations survived beyond 300 days. These long-term survivors showed no evidence of gliosarcoma at the injection site on evaluation by magnetic resonance imaging. CONCLUSIONS These results suggest that the continuous localized delivery of subcutaneous GM-CSF in conjunction with inactivated tumor antigens can initiate a systemic response that leads to the regression of distant peripheral and intracerebral tumors. The success of this treatment illustrates the feasibility of tumor-specific peripheral immunological stimulation after tumor resection to prevent the recurrence of malignant brain tumors.
Characterization of spinal cord lesions in cattle and horses with rabies

Twenty-six cattle and 7 horses were diagnosed with rabies. Samples of brain and spinal cord were processed for hematoxylin and eosin staining and immunohistochemistry (IHC). In addition, refrigerated fragments of brain and spinal cord were tested by direct fluorescent antibody test and intracerebral inoculation in mice. Statistical analyses and Fisher exact test were performed by commercial software. Histologic lesions were observed in the spinal cord in all of the cattle and horses. Inflammatory lesions in horses were moderate at the thoracic, lumbar, and sacral levels, and marked at the lumbar enlargement level. Gitter cells were present in large numbers in the lumbar enlargement region. IHC staining intensity ranged from moderate to strong. Inflammatory lesions in cattle were moderate in all spinal cord sections, and gitter cells were present in small numbers. IHC staining intensity was strong in all spinal cord sections. Only 2 horses exhibited lesions in the brain, which were located mainly in the obex and cerebellum; different from that observed in cattle, which had lesions in 25 cases. Fisher exact test showed that the odds of detecting lesions caused by rabies in horses are 3.5 times higher when spinal cord sections are analyzed, as compared to analysis of brain samples alone.
Calpain product of WT‐CRMP2 reduces the amount of surface NR2B NMDA receptor subunit

The brain is particularly vulnerable to ischaemia; however, neurons can become tolerant to ischaemic insult. This tolerance has been shown to involve activation of NMDA receptors, but its mechanisms have not yet been fully elucidated. Using a preconditioning protocol, we show that neurons surviving to a transient NMDA exposure become resistant to the glutamatergic agonist. Using a proteomic approach, we found that alterations of the protein pattern of NMDA‐resistant neurons are restricted mainly to the five collapsin response mediator proteins (CRMPs). A sustained increase in calpain activity following NMDA treatment is responsible for the production of cleaved CRMPs. Finally, we provide evidence for the involvement of the cleaved form of WT‐CRMP2 in the down‐regulation of NR2B. Our data suggests that, beside their role in neuronal morphogenesis, CRMPs may contribute to neuronal plasticity.
Epidemiology of Helicobacter pylori infection

This review of recent publications related to the epidemiology of Helicobacter pylori highlights the origin of the infection, its changing prevalence, transmission, and outcome. A number of studies have addressed the ancestor roots of the bacteria, and the first genomewide analysis of bacterial strains suggests that its coexistence with humans is more ancient than previously thought. As opposed to the generally declining prevalence of H. pylori (including China and Japan), in Sweden, the prevalence of atrophic gastritis in the young population has risen. The prevalence of the infection remains high in the indigenous populations of the Arctic regions, and reinfection rates are high. A high prevalence is permanently found in the Siberian regions of Russia as well. Several studies, some of which used multiplex serology, addressed prevalence of and risks associated with various H. pylori serotypes, thereby enabling more precise risk assessment. Transmission of H. pylori was discussed, specifically fecal–oral transmission and the use of well‐water and other unpurified water. Finally, the long‐term course of H. pylori infection was considered, with an estimated 89% of noncardia gastric cancer cases being attributable to the infection.
“Functional Automaticity” in Children's Writing

An argument is presented for distinguishing between fluency and automaticity of procedures in writing. Writers must develop a certain level of fluency in some of their writing subskills, but skilled writing necessitates that automaticity not be absolute, not be “modular” to use Fodor's (1983) terminology. Various empirical results are presented suggesting that a prominent difference between skilled and less skilled writing is the extent of metacognitive control over writing subprocesses. It is this metacognitive control, not increasing encapsulated automaticity, that enables the processes that characterize skilled writing, such as directed search, critical examination, and revision. Educational implications of this premise are explored.