Miracle-dz/UniFAR-FTUs huggingface dataset:
Exploring the influence of a science content course incorporating explicit nature of science and argumentation instruction on preservice primary teachers' views of nature of science

There exists a general consensus in the science education literature around the goal of enhancing students. and teachers. views of nature of science (NOS). An emerging area of research in science education explores NOS and argumentation, and the aim of this study was to explore the effectiveness of a science content course incorporating explicit NOS and argumentation instruction on preservice primary teachers. views of NOS. A constructivist perspective guided the study, and the research strategy employed was case study research. Five preservice primary teachers were selected for intensive investigation in the study, which incorporated explicit NOS and argumentation instruction, and utilised scientific and socioscientific contexts for argumentation to provide opportunities for participants to apply their NOS understandings to their arguments. Four primary sources of data were used to provide evidence for the interpretations, recommendations, and implications that emerged from the study. These data sources included questionnaires and surveys, interviews, audio- and video-taped class sessions, and written artefacts. Data analysis involved the formation of various assertions that informed the major findings of the study, and a variety of validity and ethical protocols were considered during the analysis to ensure the findings and interpretations emerging from the data were valid. Results indicated that the science content course was effective in enabling four of the five participants. views of NOS to be changed. All of the participants expressed predominantly limited views of the majority of the examined NOS aspects at the commencement of the study. Many positive changes were evident at the end of the study with four of the five participants expressing partially informed and/or informed views of the majority of the examined NOS aspects. A critical analysis of the effectiveness of the various course components designed to facilitate the development of participants‟ views of NOS in the study, led to the identification of three factors that mediated the development of participants‟ NOS views: (a) contextual factors (including context of argumentation, and mode of argumentation), (b) task-specific factors (including argumentation scaffolds, epistemological probes, and consideration of alternative data and explanations), and (c) personal factors (including perceived previous knowledge about NOS, appreciation of the importance and utility value of NOS, and durability and persistence of pre-existing beliefs). A consideration of the above factors informs recommendations for future studies that seek to incorporate explicit NOS and argumentation instruction as a context for learning about NOS.
Pastoral conflicts and state-building in the Ethiopian lowlands

This paper draws attention to the central role played by the Ethiopian state in reconfiguring contemporary (agro-)pastoral conflicts in its semi-arid lowlands. Contrary to primordialist and environmental conflict theories of pastoralist violence, we shed light on the changing political rationality of inter-group conflicts by retracing the multiple impacts of state-building on pastoral land tenure and resource governance, peacemaking and custommary authorities, and competition over state resources. Based on an extensive comparative review of recent case studies, post-1991 administrative decentralisation is identified as a major driving force in struggles for resources between transhumant herders in Ethiopia’s peripheral regions. Our analysis emphasises the politicisation of kinship relations and group identities and the transformation of conflict motives under the influence of the gradual incorporation of (agro-)pastoral groups into the Ethiopian nation-state. Ethnic federalism incites pastoralists to engage in parochial types of claim-making, to occupy territory on a more permanent basis and to become involved in ‘politics of difference’ with neighbouring groups.
An Anthropometric Analysis of Dry Human Sacrum : Gender Discrimination

Sacrum is a part of axial skeleton and has long been held as a bone which is highly sexually dimorphic. In the present study 43 dry human sacra were subjected to anthropometric analysis to study the gender difference. The measurements taken were tabulated and analyzed statistically. Sacral index, Curvature index, Corpobasal index and Index of first sacral vertebra were calculated. The results of present study were compared with previous studies. The sacral index was found to most useful parameter to establish the sexual identity of the bone. The values obtained in the present study can be a useful guideline for sex identification in cases of forensic investigations.
Morbidity and quality of life among head and neck cancer patients treated with radical radiotherapy.

OBJECTIVES To determine the relative frequency of acute radiation morbidity and their perceived effect on quality of life among head and neck cancer patients treated with radical radiotherapy. DESIGN A cross-sectional study. SETTING Kenyatta National Hospital, Nairobi. SUBJECTS Thirty eight patients comprising 28 males and 10 females with ages ranging between 21 and 69 years were evaluated. RESULTS Most of the tumours occurred in the nasopharynx (38.6%). The rest of the tumours were equally divided between the oral cavity and larynx (31.6%). All tumours except two were carcinomas. The two exceptions were a glomus tumour and a malignant melanoma. The patients had received doses of radiotherapy ranging between 58.5 Grey and 75.5 Grey. Of the 38 patients, 22 (53%) completed their treatment in the prescribed time while 16 (47%) had treatment interruption on account of radiation morbidity. The cumulative radiation done at the time of interruption ranged between 20 and 46 Grey. The most frequent symptom was dryness of the mouth while the most troublesome symptom was difficulty in tasting foods. The quality of life (QOL) did not vary by age, gender or tumour site. Patients who had treatment interruption had a better QOL than those who did not. CONCLUSION This study provides information that should aid in communicating with the head and neck cancer patients scheduled for radiotherapy and in the design of preventive and interventional strategies aimed at enhancing patient support and rehabilitation.
Pre-service Science Teachers' Development of Epistemological Beliefs

Epistemological beliefs, which are defined as beliefs regarding knowledge construction, are thought to be closely connected to different pedagogical approaches and teaching goals. They are also important to the learning process because they function as a lens to a learner’s view on content. In a cross-sectional study, we analysed the epistemological beliefs of pre-service science teachers in higher level secondary schools in Germany (n = 163). We used a closed, 26-item questionnaire that tapped the dimensions source, justification, development and certainty in the domain of science. Our findings suggest that pre-service teachers begin their professionalization with less sophisticated beliefs. Although we hypothesized that beliefs would differ across curricula, we found no differences. In addition we compared the beliefs of first, third and fifth semester students and also found no evidence of belief development as the students advanced through their semesters of professional training. Our findings suggest that pre-service teachers face a difficult start to their university education, most likely because of a predisposition to traditional teaching. Further the results may indicate that experience and knowledge alone do not strongly motivate change in the belief structure of pre-service science teachers. Our recommendation is that there should be a stronger emphasis on changing their epistemological beliefs during their academic training in an effort to improve science teaching.
Nutritional Evaluation of Genetically Modified Maize Corn Performed on Rats

The aim of this study was to determine the composition and nutritional value of conventional and transgenic, so-called Roundup Ready (RR) maize with an introduced gene of glyphosate resistance. Crude protein, crude fibre, ash, fat, starch, sugar, amino acids, fatty acid and macroelement levels were determined by chemical analysis. In both maize lines a low level of Ca (0.15g.kg m 1 DM) and of the essential amino acids lysine and tryptophan (2.6 and 1.7g.kgm 1 DM, respectively) were observed. In the biological experiment carried out on rats the tested maize lines were the only dietary sources of nitrogen, thus, the experimental diets contained 9% CP in dietary dry matter. In the feeding experiment no significant differences in the protein efficiency ratio (PER) were observed between groups receiving conventional or transgenic maize (1.51 and 1.41, respectively). Also almost equal results were obtained in the balance experiments. Both maize lines revealed a high nitrogen digestibility (84.9 and 84.5%, respectively) and the net protein utilization amounted to 63.5 and 63.2%, respectively. From these results can be concluded that regarding nutrient composition and utilisation, genetically modified (RR) maize is equivalent to isogenic maize.
Responses of Retinal Ganglion Cells to Extracellular Electrical Stimulation, from Single Cell to Population: Model-Based Analysis

Retinal ganglion cells (RGCs), which survive in large numbers following neurodegenerative diseases, could be stimulated with extracellular electric pulses to elicit artificial percepts. How do the RGCs respond to electrical stimulation at the sub-cellular level under different stimulus configurations, and how does this influence the whole-cell response? At the population level, why have experiments yielded conflicting evidence regarding the extent of passing axon activation? We addressed these questions through simulations of morphologically and biophysically detailed computational RGC models on high performance computing clusters. We conducted the analyses on both large-field RGCs and small-field midget RGCs. The latter neurons are unique to primates. We found that at the single cell level the electric potential gradient in conjunction with neuronal element excitability, rather than the electrode center location per se, determined the response threshold and latency. In addition, stimulus positioning strongly influenced the location of RGC response initiation and subsequent activity propagation through the cellular structure. These findings were robust with respect to inhomogeneous tissue resistivity perpendicular to the electrode plane. At the population level, RGC cellular structures gave rise to low threshold hotspots, which limited axonal and multi-cell activation with threshold stimuli. Finally, due to variations in neuronal element excitability over space, following supra-threshold stimulation some locations favored localized activation of multiple cells, while others favored axonal activation of cells over extended space.
Selenium, but Not Lycopene or Vitamin E, Decreases Growth of Transplantable Dunning R3327-H Rat Prostate Tumors

Background Lycopene, selenium, and vitamin E are three micronutrients commonly consumed and supplemented by men diagnosed with prostate cancer. However, it is not clear whether consumption of these compounds, alone or in combination, results in improved outcomes. Methodology/Principal Findings We evaluated the effects of dietary lycopene (250 mg/kg diet), selenium (methylselenocysteine, 1 mg/kg diet), and vitamin E (γ-tocopherol, 200 mg/kg diet) alone and in combination on the growth of androgen-dependent Dunning R3327-H rat prostate adenocarcinomas in male, Copenhagen rats. AIN-93G diets containing these micronutrients were prefed for 4 to 6 weeks prior to tumor implantation by subcutaneous injection. Tumors were allowed to grow for ∼18 weeks. Across diet groups, methylselenocysteine consumption decreased final tumor area (P = 0.003), tumor weight (P = 0.003), and the tumor weight/body weight ratio (P = 0.003), but lycopene and γ-tocopherol consumption intake did not alter any of these measures. There were no significant interactions among nutrient combinations on tumor growth. Methylselenocysteine consumption also led to small, but significant decreases in body weight (P = 0.007), food intake (P = 0.012), and body weight gain/food intake ratio (P = 0.022). However, neither body weight nor gain/food intake ratio was correlated with tumor weight. Methylselenocysteine, lycopene, and γ-tocopherol consumed alone and in combination did not alter serum testosterone or dihydrotestosterone concentrations; tumor proliferation or apoptosis rates. In addition, the diets also did not alter tumor or prostate androgen receptor, probasin, selenoprotein 15, selenoprotein P, or selenium binding protein 2 mRNA expression. However, using castration and finasteride-treated tissues from a previous study, we found that androgen ablation altered expression of these selenium-associated proteins. Conclusions Of the three micronutrients tested, only methylselenocysteine consumption reduced growth of transplantable Dunning R3327-H prostate tumors, albeit through an unresolved mechanism.
Phytoplasma Effector SAP54 Induces Indeterminate Leaf-Like Flower Development in Arabidopsis Plants1[C][W][OA]

Phytoplasmas are insect-transmitted bacterial plant pathogens that cause considerable damage to a diverse range of agricultural crops globally. Symptoms induced in infected plants suggest that these phytopathogens may modulate developmental processes within the plant host. We report herein that Aster Yellows phytoplasma strain Witches’ Broom (AY-WB) readily infects the model plant Arabidopsis (Arabidopsis thaliana) ecotype Columbia, inducing symptoms that are characteristic of phytoplasma infection, such as the production of green leaf-like flowers (virescence and phyllody) and increased formation of stems and branches (witches’ broom). We found that the majority of genes encoding secreted AY-WB proteins (SAPs), which are candidate effector proteins, are expressed in Arabidopsis and the AY-WB insect vector Macrosteles quadrilineatus (Hemiptera; Cicadellidae). To identify which of these effector proteins induce symptoms of phyllody and virescence, we individually expressed the effector genes in Arabidopsis. From this screen, we have identified a novel AY-WB effector protein, SAP54, that alters floral development, resulting in the production of leaf-like flowers that are similar to those produced by plants infected with this phytoplasma. This study offers novel insight into the effector profile of an insect-transmitted plant pathogen and reports to our knowledge the first example of a microbial pathogen effector protein that targets flower development in a host.
Predicción de los comportamientos positivos en educación física: una perspectiva desde la Teoría de la Autodeterminación

This study examines the motivational antecedents that might influence on positive behaviors in physical education classes. The sample comprised 1692 pupils ranging in age from 12 to 16 years old (M = 13.34; SD = .76), recruited from 99 school classes in 32 public secondary schools. A complete model of structural regression is tested taking into account the multilevel nature of the data, showing how the perception of basic psychological needs support predicts the types of motivation through the basic psychological needs satisfaction, and the types of motivation predict the positive behaviors. The results emphasize motivational processes as key factors for the development of adaptive behaviors in physical education context.
The Influence of External Pressure Groups on Corporate SocialDisclosure: Some Empirical Evidence

Many social accounting researchers refer to environmental pressure groups as being a major influence on companies′ decisions to disclose social information. Such a claim is, however, to date unsubstantiated. Virtually no empirical evidence has been produced which confirms or refutes this proposition. Similarly there is no literature on pressure groups′ interest in, or reaction to, corporate social disclosure (CSD). Provides the first, albeit exploratory, investigation of such pressure groups and their potential influence on the production of CSD. Results show that pressure groups are users of CSD and do attempt to influence companies′ disclosure practices. The environmental movement considers current CSD to be insufficient and low in credibility. The preferred corporate social report (for pressure groups) would include narratives and quantified terms, would be in the annual report and would be prepared by, certified by, and/or held by a body external to the company.
Fashion Waves in Information Systems Research and Practice

Building on neo-institutional theory and theories of innovation and diffusion, recent work in the field of management has suggested that management research and practice is characterized by fashions. A management fashion is a relatively transitory belief that a certain management technique leads rational management progress. Using bibliographic research, we apply Abrahamson's management fashion theory to information systems research and practice. Our findings reveal that information systems research and practice, like management research and practice, is indeed characterized by fashions. These "IS fashion waves" are relatively transitory and represent a burst of interest in particular topics by IS researchers and practitioners. However, while our findings show that IS research closely parallels practice, we suggest that a more proactive engagement of IS academics is needed in the IS fashion-setting process.
Real-world Data and Recommended Dosage of Non-vitamin K Oral Anticoagulants for Korean Patients

Regulatory approvals of non-vitamin K antagonist oral anticoagulants (NOACs) have been based on large randomized phase III trials evaluating dabigatran, rivaroxaban, apixaban, or edoxaban relative to warfarin for atrial fibrillation (AF). The results of the trials showed that all NOACs were at least non-inferior to warfarin in the prevention of stroke/thromboembolism and showed lower rates of intracranial bleeding than those associated with warfarin. However, the trials were designed differently, varied in the inclusion/exclusion criteria, and used either one dose or a low/high dose of the NOAC drug. Some of these differences have challenged the ability to directly compare various NOACs, and comparative data on effectiveness and intracranial bleeding are sparse in “real-world” patients. Real-world data complement data from large randomized phase III trials by providing new aspects of the “real-world” absolute risks of ischemic and hemorrhagic stroke associated with NOACs vs. warfarin. Moreover, “real-world” fragile patients might have been included (e.g., patients with increased risk of bleeding, liver disease, and chronic kidney disease), although these patients would be less represented in trials. This paper introduces recently published real-world data of NOACs and further suggests the recommended dosage of NOACs for Korean patients.
Impact of Spam Exposure on User Engagement

In this paper we quantify the effect of unsolicited emails (spam) on behavior and engagement of email users. Since performing randomized experiments in this setting is rife with practical and moral issues, we seek to determine causal relationships using observational data, something that is difficult in many cases. Using a novel modification of a user matching method combined with a time series regression on matched user pairs, we develop a framework for such causal inference that is particularly suited for the spam exposure use case. Using our matching technique, we objectively quantify the effect that continued exposure to spam has on user engagement in Yahoo! Mail. We find that indeed spam exposure leads to significantly, both statistically and economically, lower user engagement. The impact is non-linear; large changes impact users in a progressively more negative fashion. The impact is the strongest on "voluntary" categories of engagement such as composed emails and lowest on "responsive" engagement metrics. Our estimation technique and results not only quantify the negative impact of abuse, but also allow decision makers to estimate potential engagement gains from proposed investments in abuse mitigation.
N-GrAM: New Groningen Author-profiling Model

We describe our participation in the PAN 2017 shared task on Author Profiling, identifying authors’ gender and language variety for English, Spanish, Arabic and Portuguese. We describe both the final, submitted system, and a series of negative results. Our aim was to create a single model for both gender and language, and for all language varieties. Our best-performing system (on cross-validated results) is a linear support vector machine (SVM) with word unigrams and character 3- to 5-grams as features. A set of additional features, including POS tags, additional datasets, geographic entities, and Twitter handles, hurt, rather than improve, performance. Results from cross-validation indicated high performance overall and results on the test set confirmed them, at 0.86 averaged accuracy, with performance on sub-tasks ranging from 0.68 to 0.98.
A case report of nonepisodic angioedema with eosinophilia in a Korean patient and a review of the Korean literature

Episodic angioedema with eosinophilia (EAE) is characterized by recurrent angioedema, peripheral eosinophilia, elevated serum IgM, fever, weight gain, and a benign course lacking any internal organ involvement. Dozens of cases of the nonepisodic variant (NEAE), which is limited to a single attack, have been reported in Japan. These NEAE cases normally have been less severe than the episodic type. In this paper, we describe the case of a Korean patient whose clinical and laboratory findings were consistent with NEAE, and review five other cases of EAE and NEAE reported in the Korean literature. The Korean NEAE cases outlined in this paper demonstrate that, as in Japan, NEAE is not uncommon in Korea, and also suggest that this disease exhibits a cultural predilection for Asian populations.
Writing Science: Literacy And Discursive Power

Introduction - the discursive technology of science. Part 1 Professional literacy: construing nature on the language of physical science some grammatical problems in scientific English the construction of knowledge and value of the grammar of scientific discourse - with reference to Charles Darwin's "The Origin of the Species" language and the order of nature the analysis of scientific texts in English and Chinese. Part 2 School literacy: construing knowledge. Part 3 Uncommon sense: secondary geography and science the discourse of geography - ordering and explaining the experimental world literacy in science - learning to handle text as technology. Part 4 Technicality and abstraction: secondary science and humanities technicality and abstraction - language for the creation of specialised texts secret English - discourse technology in a junior secondary school life as a noun - arresting the universe in science and technology.