Evaluating the effect of transformational leadership on knowledge sharing using structural equation modelling: the case of Iraqi higher education

Leadership style has been suggested as an important factor affecting knowledge management in organizations. Transformational leadership has been acknowledged as having a positive general influence on knowledge management. However, there is a lack of empirical studies examining the relationship between transformational leadership and knowledge sharing in higher education within developing countries such as Iraq. This research seeks to evaluate the impact of the four components of transformational leadership, namely idealized influence, inspirational motivation, intellectual stimulation and individualized consideration, on knowledge sharing (both donating and collecting). Two hundred and fifty usable questionnaires were collected from public higher education institutions in Iraq. Structural equation modelling with AMOS 22 confirms the importance of transformational leadership in encouraging knowledge-sharing culture in higher education. The results reveal that, of the four components of transformational leadership, intellectual stimulation has the strongest effect on both the donating and collecting of knowledge. Guidelines are developed for academics as well as leaders, and evidence is provided in support of the use of transformational leadership to promote knowledge sharing within higher education in developing countries, particularly Iraq. The implications of the findings, along with some potential applications and suggestions for future research, are discussed.     

Efficacy of Tumor Necrosis Factor and Interleukin-10 Analysis in the Follow-up of Nonalcoholic Fatty Liver Disease Progression

Tumor necrosis factor (TNF-α) is a cytokine involved in systemic inflammation during acute phase reactions. The current study was designed to investigate the levels of pro-inflammatory cytokine (TNF-α) along with the anti-inflammatory cytokine (IL-10) during progression of non-alcoholic fatty liver disease (NAFLD) from simple steatosis to non-alcoholic steatohepatitis (NASH) and fibrosis in diabetic patients, and correlate the levels of cytokines with the progression of NAFLD. Fifty-two diabetic patients compared to 18 healthy controls were participated in this study. Based on clinical diagnosis, patients were divided into three groups: simple steatosis, NASH and fibrosis. Serum liver function tests, fasting blood glucose, bilirubin, ALT, AST, TNF-α, IL-10 and lipid profile were measured. TNF-α levels were significantly higher in NAFLD patients compared to control subjects with a significant positive correlation with body mass index and fasting blood glucose (FBG) but with negative correlation with IL-10. Serum IL-10 levels were significantly lower in NAFLD patients compared with controls. A positive correlation between IL-10 and HDL-C with concomitant negative correlation between IL-10 and FBG and triacylglycerides was found. Cytokine analyses showed that there was a prominent imbalance between TNF-α and IL-10 in patients with NAFLD, and this imbalance increase by increasing the progression of NAFLD especially in obese diabetic patients. TNF-α and IL-10 could be used in diagnosis and follow-up of NAFLD stages in a way to avoid liver biopsies in greater proportion of patients.     

A qualitative analysis of context-aware ubiquitous learning environments using Bluetooth beacons

The use of Bluetooth Low Energy (BLE) beacons is becoming widespread for context-aware learning environments. This technology can be used in indoor and outdoor settings such as museums, shops, home and schools in order to identify the location of learners and their contexts. Specifically, in the constructivist view of learning, learners can use such sensing technology for constructing knowledge and experiencing learning at any time, anywhere. However, exploration of such technology has been limited in the constructivist context-aware ubiquitous learning (U-learning) literature. For this purpose, the authors evaluated two android-based U-learning applications: one was an outdoor learning environment in a garden, the other was about locating books in a library. The applications were implemented and tested with school and university students. The qualitative results are presented in this article, and show how such sensing technology is promising for both pedagogical environments.     

Morpho-Phonemic Similarity within and between Languages: A Factor to be Considered in Processing Arabic and Hebrew

The goal of the present study was to explore the pattern of lexical connections between translation equivalents represented in the cognitive system of an Arabic-Hebrew bilingual. To achieve this goal, repetition priming effects (reaction times (RTs) and accuracy measures) were compared between translation equivalents in the two forms of Arabic, Spoken Arabic (SA) and Literary Arabic (LA), with those between translation equivalents in Hebrew and LA, in native Arabic students living in Israel. While these students master Hebrew as well as they master LA, they consider it as a second language. LA targets were preceded by cognate and non-cognate translation equivalents in SA or Hebrew either immediately (Lag 0) or separated by four unrelated words (Lag 4), in a lexical decision task. The participants were requested to make a word/non-word decision regardless of language. Across languages, morpho-phonemic similarities augmented the repetition priming effects. At Lag 0 this effect was larger when the primes were in Hebrew than when they were in SA. At Lag 4, however, the priming effect between Hebrew and LA was significantly reduced (and even absent for non-cognates). In contrast, the priming effect between Spoken and Literary Arabic was only slightly attenuated. The conclusion was that, despite the intensive daily use and psychological proximity, Spoken and Literary Arabic are represented as first and second languages in the cognitive system of the native Arabic reader, entertaining distinct lexica. However, the strength of the lexical associations between translation equivalents is influenced by the frequency of concomitant use.     

Family contexts of television

Educational technology research and development -     

Morphological and orthographic effects on hemispheric

We tested the effects of morphological and orthographic differences between English, Hebrew, and Arabic on the functioning of the two cerebral hemispheres. University students who were native speakers of each of the three languages performed a lateralized consonant-vowel-consonant (CVC) identification task. The stimuli were presented vertically in three conditions: left visual field (LVF), right visual field (RVF), and bilaterally (BVF). Three dependent measures were used: (1) exposure duration of the stimuli in order to achieve a 50% error rate, (2) total number of errors in each presentation condition and (3) the difference between errors on the first letter and errors on the last letter, a qualitative measure of sequential processing. Arabic readers required longer exposure durations of the syllables in order to achieve a 50% error rate than Hebrew readers, who in turn, required longer exposure durations than native English readers. Readers of all three languages evinced left hemisphere specialization for this linguistic task and a bilateral advantage. The qualitative patterns revealed that the Arabic and Hebrew speakers showed the same hemispheric difference pattern, that was different from the one shown by English readers, and that Arabic readers showed a qualitative pattern suggesting higher levels of sequential processes in both hemisphere than readers of Hebrew and English. We interpret this as reflecting the adaptation of hemispheric abilities to reading languages that differ in morphological structure and orthography.     

Pathways from parental stimulation of children’s curiosity to high school science course accomplishments and science career interest and skill

Curiosity is fundamental to scientific inquiry and pursuance. Parents are important in encouraging children’s involvement in science. This longitudinal study examined pathways from parental stimulation of children’s curiosity per se to their science acquisition (SA). A latent variable of SA was indicated by the inter-related variables of high school science course accomplishments, career interest, and skill. A conceptual model investigated parental stimulation of children’s curiosity as related to SA via science intrinsic motivation and science achievement. The Fullerton Longitudinal Study provided data spanning school entry through high school (N?=?118). Parental stimulation of curiosity at age 8 years comprised exposing children to new experiences, promoting curiosity, encouraging asking questions, and taking children to a museum. Intrinsic motivation was measured at ages 9, 10, and 13 years, and achievement at ages 9, 10, and 11 years. Structural equation modelling was used for analyses. Controlling for socio-economic status, parental stimulation of curiosity bore positive and significant relations to science intrinsic motivation and achievement, which in turn related to SA. Gender neither related to stimulation of curiosity nor contributed to the model. Findings highlight the importance of parental stimulation of children’s curiosity in facilitating trajectories into science, and relevance to science education is discussed.