Actor\u27s and Partner\u27s Self-Discrepancy as Moderators of the Relationship Between Negative Events and Reflected Appraisals: A Daily Diary Study Examining the Actor-Partner Interdependence Model in African American Couples

Self-worth influences how individuals perceive the health of their romantic relationships in response to adverse experiences, especially interpersonal threats. Though explicit self-esteem is often used as an indicator of self-worth in investigations of relationship functioning after interpersonal threats, particularly those focusing on perceptions of felt love and acceptance, actual:ideal self-discrepancy is an evaluative aspect of the self that may have more direct impacts on romantic relationship functioning after negative events that are unrelated to the relationship. Using the Actor-Partner Interdependence Model to analyze dyadic data from 150 African American couples using multilevel regression models, the current study’s results were contrary to predictions; actor\u27s selfdiscrepancy did not moderate the association between daily event negativity and daily relationship functioning (H1) and actor\u27s and partner\u27s self-discrepancy did not interact to moderate this association either (H3). However, partner\u27s self-discrepancy significantly moderated the association between daily event negativity and daily relationship functioning (H2) while a post-hoc analysis found that partner\u27s selfdiscrepancy significantly moderated the association between actor\u27s self-discrepancy and daily relationship functioning. Actual:ideal self-discrepancy exerted a distinctive impact on romantic relationship functioning, even after controlling for explicit selfesteem, and may be a critical factor in relationship health to investigate in the future

'Are principals instructional leaders yet?' a science map of the knowledge base on instructional leadership, 1940-2018

Abstract: In the 1980s when research on effective schools surfaced the importance of 'instructional leadership in the United States, skeptics who wondered if this would be just another educational fad. Yet, 40 years later, the expectation for school principals to be 'instructional leaders' has become ubiquitous throughout much of the world. This systematic review of research used science mapping to gain insights into the growth, geographic distribution, key documents and authors, and topics in this literature. The authors used a variety of quantitative bibliometric analyses to examine 1,206 Scopus-indexed journal articles on instructional leadership published between 1940 and 2018. The results affirm that the knowledge base on instructional leadership has not only increased in size, but also geographic scope. Contrary to expectations during the 1980s, instructional leadership has demonstrated remarkable staying power, growing into one of the most powerful metaphors guiding research, policy and practice in school leadership. Despite this finding, both author co-citation and co-word analyses revealed the emergence of 'integrated models of school leadership' in which instructional leadership is enacted in concert with dimensions drawn from complementary leadership approaches. Key themes in the recent literature include studies of leadership effects on teachers and students, contexts for leadership practice, and means of developing instructional leaders

Science mapping research on educational leadership and management in Turkey : a bibliometric review of international publications

Abstract: Over the past two decades, there have been significant efforts to investigate knowledge produc-tion in the field of educational leadership and management (EDLM) in non-Western contexts. Consistent with this effort, the present paper aims to identify the contribution of Turkish scholars to the international EDLM literature. More specifically, the review examined the volume, jour-nals, authors, types of papers, most frequently used keywords, citation impact, and co-citation networks of papers associated with Turkish EDLM scholars. Bibliometric methods were em-ployed to examine 313 papers published by Turkish scholars in internationally recognized jour-nals. The results show that while Turkish EDLM scholars have predominantly published in Tur-key-based journals, there has also been a substantial increase in the number of papers published in international journals in recent years. This literature is largely empirical with topical foci con-centrated on issues surrounding school leadership and organizational behavior. Author co-citation analysis identified three main Schools of Thought in the Turkish literature: Leadership for Learning, Leading Teachers, Administrative Behavior and Effects in Turkey. Several rec-ommendations are made in order to further develop EDLM field in both Turkey and other emerging countries

Mapping the landscape and structure of research on education for sustainable development : a bibliometric Review

Abstract: Please refer to full text to view abstract

Crosstalk between the HpArsRS two-component system and HpNikR is necessary for maximal activation of urease transcription

Helicobacter pylori NikR (HpNikR) is a nickel dependent transcription factor that directly regulates a number of genes in this important gastric pathogen. One key gene that is regulated by HpNikR is ureA, which encodes for the urease enzyme. In vitro DNA binding studies of HpNikR with the ureA promoter (P-ureA) previously identified a recognition site that is required for high affinity protein/DNA binding. As a means to determine the in vivo significance of this recognition site and to identify the key DNA sequence determinants required for ureA transcription, herein, we have translated these in vitro results to analysis directly within H. pylori. Using a series of GFP reporter constructs in which the P-ureA DNA target was altered, in combination with mutant H. pylori strains deficient in key regulatory proteins, we confirmed the importance of the previously identified HpNikR recognition sequence for HpNikR-dependent ureA transcription. Moreover, we identified a second factor, the HpArsRS two-component system that was required for maximum transcription of ureA. While HpArsRS is known to regulate ureA in response to acid shock, it was previously thought to function independently of HpNikR and to have no role at neutral pH. However, our qPCR analysis of ureA expression in wildtype, Delta nikR and Delta arsS single mutants as well as a Delta arsS/nikR double mutant strain background showed reduced basal level expression of ureA when arsS was absent. Additionally, we determined that both HpNikR and HpArsRS were necessary for maximal expression of ureA under nickel, low pH and combined nickel and low pH stresses. In vitro studies of HpArsR-P with the P-ureA DNA target using florescence anisotropy confirmed a direct protein/DNA binding interaction. Together, these data support a model in which HpArsRS and HpNikR cooperatively interact to regulate ureA transcription under various environmental conditions. This is the first time that direct cross-talk between HpArsRS and HpNikR at neutral pH has been demonstrated

Polymorphisms of the acid sensing histidine kinase gene arsS in Helicobacter pylori populations from anatomically distinct gastric sites

Phase variation is frequently utilized by bacterial species to affect gene expression such that phenotypic variants are maintained within populations, ensuring survival as environmental or host conditions change. Unusual among Helicobacter pylori phase variable or contingency genes is arsS, encoding a sensory histidine kinase involved in the acid acclimation of the organism. The presence of a 3\u27 homopolymeric cytosine tract of variable length in arsS among Helicobacter pylori strains allows for the expression of various functional ArsS isoforms, differing in carboxy-terminal protein domains. In this study, we analyzed this 3\u27 arsS region via amplified fragment length polymorphism (AFLP) and sequencing analyses for H. pylori populations from 3 different gastric sites of 12 patients. Our data indicate the presence of multiple arsS alleles within each population of H. pylori derived from the gastric antrum, cardia, or corpus of these patients. We also show that H. pylori, derived from the same anatomical site and patient, are predicted to express multiple ArsS isoforms in each population investigated. Furthermore, we identify a polymorphic deletion within arsS that generates another alternate ArsS C-terminal end. These findings suggest that four C-terminal variations of ArsS adds to the complexity of the ArsRS acid adaptation mechanism as a whole and may influence the ability of H. pylori to persist in the gastric niche for decades. (c) 2012 Elsevier Ltd. All rights reserved

The Grizzly, March 19, 1990

Long Awaited Art Minor Develops • Debate Provokes Thought • Fire: Alarming! • Letters: Reminiscent of Nostalgia?; Ex-Editors Thanked • Global Changes In U.N. • Liberal Studies For Freshmen • New Exhibit Opens: Cohen, Zucker at Berman Art Museum • Bear Pack Set For Outdoor Season • Bears: New and Better • Sorry, No Cigar • UC Tennis • Women\u27s Lax Triumph • Video Review • Green Pledgehttps://digitalcommons.ursinus.edu/grizzlynews/1254/thumbnail.jp