bluuebunny/crossref_metadata_2025 huggingface dataset:
MicroRNA-6838-5p suppresses metastasis and increases cisplatin sensitivity in lung cancer
Authors: Li ChuanChuan , Zhu XiaoFeng , Zhu Xinhai , Jie RuiXia , Yuan Feng
Published: March 2023

Cisplatin (DDP) chemotherapy is effective to treat tumors but potentially limited to drug resistance. The research studied miR-6838-5p in controlling LC cells’ DDP resistance. First, clinical samples of DDP-resistant LC and DDP-sensitive LC were obtained and clinicopathological information was analyzed. Then, a DDP-resistant cell model (A549/DDP) was established and transfected with the plasmid vector that interfered with the expression of miR-6838-5p or SYPL1. Cell viability and half-maximal inhibitory concentration (IC50), apoptosis, migration and invasion were detected by CCK-8, flow cytometry, and Transwell, respectively. miR-6838-5p, SYPL1, MMP-2 and MMP-9 expression was determined by RT-qPCR or immunoblot analysis. Finally, the targeting relationship between miR-6838-5p and SYPL1 was verified by bioinformatics website and luciferase reporter assay. Experiment result showed that reduced miR-6838-5p and upregulated SYPL1 were presented in DDP-resistant LC. Elevating miR-6838-5p or suppressing SYPL1 repressed proliferative, migratory, and invasive activities and DDP resistance, but promoted apoptosis in A549/DDP cells. MiR-6838-5p targeted SYPL1. Moreover, SYPL1 overexpression turned around elevated miR-6838-5p-mediated effect on A549/DDP metastasis and DDP resistance. In conclusion, miR-6838-5p targets SYPL1 to restrain metastasis and DDP resistance of LC cells.
The impact of competition on experts' information disclosure : the case of real estate brokers
Authors: Cherbonnier Frederic , Leveque Christophe
Published: March 2023

We investigate whether competition between appraisers induce them to better conduct the valuation of a property that they are likely to sell subsequently. We first show that the impact of competition is in theory ambiguous, both on information disclosure and on price levels. Second, we conduct an empirical study to settle this question when considering real estate brokers in France. Using data from an online company connecting brokers with clients who want to sell their housing properties, we show that more competition or lower opportunity to collude induce brokers to raise their initial price estimation of properties' value by more than 3%. This is observed upstream, when experts appraise the property for sale. Competition partially prevents brokers from biaising downward evaluations, and appears beneficial to the client since it translates into a positive effect on listing prices without a negative effect on the subsequent sale process (time on the market and selling price).
JEL Codes: L15 - D8 - D83 - R30 - L85
Effect of Furrow Irrigation Systems and Irrigation Levels on Maize Agronomy and Water Use Efficiency in Arba Minch, Southern, Ethiopia
Authors: Birhan Tigabie Setu
Published: March 2023

Improved irrigation water management is the main strategy to improve water use efficiency in areas where water resources are limited. Optimizing scarce water by selecting suitable furrow irrigation systems in arid and semi-arid parts of Ethiopia is rarely practiced. A field experiment was carried out to evaluate the effect of conventional, alternate, and fixed furrow irrigation systems with three levels of irrigation (100%ETc, 75%ETc, and 50%ETc) on maize agronomy and water use efficiency in Arba Minch, Southern, Ethiopia. The experimental study had nine treatments under a randomized complete block design with three replications. Furrow irrigation system and deficit irrigation levels had a significant impact (P < 0.01) on maize agronomy (plant height, days to tassel and silk, cob length and diameter, and aboveground biomass). The maximum grain yield of 7.99 ton ha-1 obtained under a conventional furrow irrigation system at 100%ETc was significantly superior as compared to other irrigation treatments and the minimum grain yield of 4.24 ton ha-1 obtained under a fixed furrow irrigation system at 50%ETc was significantly inferior as compared to other treatments. The maximum values of crop, field, and expense water use efficiencies were 2.49, 2.80, and 1.72 kg m-3 under conventional furrow irrigation at 50%ETc, respectively. The minimum values of crop, field, and expense water use efficiencies were 1.47, 1.28, and 1.05 Kg m-3 under a fixed furrow irrigation system at 100%ETc, respectively. Furrow irrigation systems and irrigation levels had a significant impact (P 0.01) on water use efficiency and grain yield. Conventional furrow irrigation system at 50%ETc can increase 0.64 ha net additional irrigable land pre each hectare compared to control (conventional furrow irrigation system at 100%ETc). Water saving up to 50%ETc in conventional furrow irrigation can solve the water shortage problem by improving water use efficiency with insignificant yield reduction.
To assess the outcomes associated with the use of tranexamic acid in the open fixation of pelvic and acetabular fractures- A systematic review
Authors: Chowdhury Debkumar
Published: March 2023

Background There is a growing knowledge base for the use of antifibrinolytic therapy in trauma and orthopaedic surgery. The mechanism of action of tranexamic acid is through the inhibition of fibrinolysis. The role of TXA in hip fractures has been researched extensively. However, the research has been limited in the realms of pelvic and acetabular fractures. Aim This systematic review aimed to examine the effect of TXA on patients undergoing open pelvic and acetabular fracture surgery. The primary aim of the study was to examine the estimated blood loss and blood transfusion rates in patients who received TXA versus those who did not receive TXA. The secondary aim was to examine the rates of deep venous thrombosis. Method A literature search was carried out using PubMed, Medline and the Cochrane database. The selection criteria for the systematic review were studies investigating intravenous TXA in the form of RCTs, as well as cohort studies. Results Five studies were included in the systematic review with 625 total patients. The estimated blood loss between the two groups was noted to be 661 ml in the control group and 850 ml in the TXA (p = 0.49). There was a marginally lower number of units transfused in the control group vs the TXA group (1.9 vs 2.2) (p = 0.27). The rates of transfusion in the TXA group were 29% TXA whilst in the control group, it was 31%(p = 0.13). The overall incidence of deep venous thrombosis was 2.8% in the TXA group and 1.7% in the control group(p = 0.097). Conclusion The results of this systematic review highlight that with the use of TXA the estimated blood loss and rates of DVT are not statistically significantly lower when compared to the groups that did not receive TXA. There is a greater need for larger adequately powered trials to further evaluate the results of this review.
THE METAPHORICAL REPRESENTATION OF THE CONCEPT OF «LABYRINTH»IN B.ANTONENKO-DAVYDOVYCH’S CREATION
Authors: Bilobrovska Kateryna
Published: March 2023

The article is devoted to the research of the peculiarities of the artistic content of the concept of «labyrinth» in B.Antonenko-Davydovych’s creative heritage. The structure of the labyrinth is defined not only by its direct meaning as a building from which it is difficult or impossible to find a way out, but also by the entanglement of relationships, situations, thoughts, actions etc.B.Antonenko-Davydovych’s works do not have the word «labyrinth» in their titles, but the life collisions of the characters in these works appeal to this very concept, which is a symbol of being, the idea of eternal return, the circle of life, relentless search, constant choice etc. The writer represents the existence of the characters as a labyrinth with a large number of decisions and a choice of actions, both true and false, in order to achieve spiritual balance. His characters often find themselves in a kind of labyrinth of events, feelings, emotions and, most importantly, their own interpretations of these events. The artist appeals to the metaphorical representation of the concept of «labyrinth» in order to focus attention on the complexity and entanglement of life in the chaos of the era. In the author’s works, the concept of «labyrinth» embodies the idea of searches, random movement, deviation from a rational path.In B.Antonenko-Davydovych’s creation the functioning of the concept of «labyrinth»as wanderings caused by the revolution and as the entanglement of life’s path and fate is highlighted in the novel «Za shyrmoiu» («Behind the curtain»), the stories «Smert»(«Death»), «Tuk-tuk», «Zavyshcheni otsinky», «Shchastia».The peculiarity of the labyrinth is that its construction involves finding an exit or is marked by the impasse. One of the consequences of getting out of the life labyrinth can be death –one’s own («Tuk-tuk»), a loved one’s («Za shyrmoiu» («Behind the curtain»)), someone else’s («Smert»(«Death»)). In the story «Shchastia» the exit from the labyrinth is marked as the understanding of the life, the acceptance of the past, that is a kind of rebirth.The story «Zavyshcheni otsinky» contains an indication of the impasse of the main character from the labyrinth
ESSAY AS A PRIORITY GENRE OF ACADEMIC WRITING
Authors: Ishchenko Olena , Chernysh Anna
Published: March 2023

The article is devoted to the understanding of the essay as a genre, which is of exceptional importance for the "Academic Writing" course. It is noted that the origins of the essay genre can be traced in the works of ancient authors (Plato, Isocrates, Marcus Aurelius), famous philosophers of the past (J. Addison, Voltaire, D. Diderot, H.-E. Lessing, J. Locke, O. Goldsmith, G. Frying pan, etc.). Later, the genre received its logical continuation in the work of foreign artists (H. Wells, J. Galsworthy, T.-S. Eliot, A. Camus, G. and T. Mann, J. P. Sartre, B. Shaw, etc.) and Ukrainian authors representing various literary periods and currents (Yu. Andruhovych, V. Vynnycheko, O. Honchar, I. Drach, M. Dochynets, E. Malanyuk, Yu. Lypa, U. Samchuk, T. Shevchenko, Yu. Shereh, etc.). It was determined that in the scientific discourse, an essay is traditionally understood as a prose work with an arbitrary composition, which is characterized by the fictionalization of recorded individual impressions, associations or information obtained from various fields of knowledge, an unsystematic combination of philosophical, literary-critical, popular science, and sometimes specifically scientific elements. The research emphasizes the desire of modern researchers to distinguish the meaning of the terms “essay” and “academic essay”, which is explained by practical needs, since the concepts function in different planes (fiction and teaching methods). The article focuses attention on the integration of the literary concept into the field of methodology. It has been found that in modern scientific studios, attention to the essay as a priority type of work in classes on the “Academic Writing” is increasing. This is explained by the orientation towards foreign models of the organization of the educational process. It is noted that at Sumy State University, during classes on the “Fundamentals of Academic Writing” course, studying the features of the essay genre is a priority. After acquiring theoretical knowledge, students represent creative work, thanks to which written and oral scientific communication is activated, and, therefore, the goal of the educational discipline is realized.
Digital transformation as a factor in sustainable construction industry development
Authors:   Irkutsk National Research Technical University, Kudryavtseva Vera А. , Nikishina Olga V. ,   Irkutsk National Research Technical University
Published: March 2023

Economic digitalization, along with the transition to a new technological paradigm, has given rise to an ongoing transformation in the Russian Federation, expanding the high-tech industry and driving inno-vation across a wide range of economic sectors. However, the digitization level in the development and construction sectors currently remains one of the lowest among industries, despite the fact that con-struction is involved in creating production capacity and contributes to the growth of fixed assets, which ensures expanded reproduction in the entire economy. Therefore, it is necessary to promote the implementation of digital and innovative technologies in the construction sector, as its digital trans-formation can produce a synergistic effect reducing project costs in general, as well as improving the competitiveness of construction organizations and strengthening their position in the market.
Characteristics of low-rise construction in Eastern Siberia
Authors:   Irkutsk National Research Technical University, Rudykh Lilia G.
Published: March 2023

In this work, the issues arising during the construction of low-rise buildings in Eastern Siberia in 2021–2022 were addressed, including the changes associated with the special military operation and West-ern and the USA sanctions against Russia. Attention was paid to the characterisation of the main tech-nologies used in the construction of low-rise buildings. The necessity of using novel approaches to solving the problems associated with the implementation of engineering infrastructure facilities, in-tended as components of new low-rise construction projects, was substantiated. 90% of low-rise build-ings comprise private suburban wooden houses, most suitable for living in an area characterised by a harsh climate. Among the used construction materials, rounded logs, laminated veneer lumber, bricks, cellular concrete, and aerated concrete should be mentioned. Naturalness, environmental friendliness and low thermal conductivity are among the advantages of wooden constructions. Due to certain limita-tions of the regulatory framework in the construction industry associated with low-rise buildings, it is necessary to improve legislation in this area, as well as strengthen control over the quality of work. The main issues were addressed, including rising prices for construction materials, a reduction in incomes, a delay in obtaining a building permit, weak competition and a small number of modern equipment. The main trends in the development of low-rise construction, the potential of the modern construction in-dustry in Eastern Siberia, its prospects and modernisation were determined.
Women in Hospital Chief Executive Officer Positions: Fact or Fiction
Authors: Hoss Mary Ann Keogh
Published: March 2023

Are women represented in hospital CEO positions? Twenty-three hospitals in three counties were surveyedto answer this question. Surveys were done to determine the number and percentage of women in hospitalCEO positions. Also identified were the beds controlled by women hospital CEOs within each county. Fromthe county with the lowest percentage of women in CEO positions, an American College of HealthcareExecutives survey, Gender and Career in Healthcare Management (GCHM), was conducted.Two counties were above the national average for women CEOs at 23.3%. One county was at 25% and theother county was at 33%. The first county was at 52% and the second county was at 27% for control ofpercentage of beds by women hospital CEOs. The third county which was below the national average forwomen was at 11% with 1.3% of the beds controlled by women. In the results of the GCHM, womenrespondents were satisfied with advancement, infrequently engaging in informal networking within theircurrent organizations, and perceived male stereotyping and preconceptions of women's roles and abilities asthe primary barrier to advancement. More research needs to be conducted on the counties with womenhospital CEOs to identify the strategies that helped make these women in CEO positions a fact.
Coming Full Circle: Mid-Career Women Leaving Administration and Returning to Faculty
Authors: Luna Gaye , Medina Catherine
Published: March 2023

"Leaving administration is part of the career cycle. However, if universities listened to those women wholeft their administration, they would have a better understanding of the problems facing their future andcurrent female leaders and how to handle their exit, when time."
Effective Mentoring Relationships with Women in Sport: Results of a Meta-Ethnography
Authors: Bower Dr. Glenna G.
Published: March 2023

Women continue to be underrepresented in leadership positions within sport. One of the most critical aspects of advancing women in leadership positions within sport is the mentoring relationship. As the number of women entering sport increases, a growing number of professionals recognize the inherent benefits and challenges between the mentor and the protégé. This study was designed to identify themes based on key elements of an effective mentoring relationship helping women to advance within leadership positions in sport. A qualitative methodology, meta-ethnography, allowed the researcher to synthesize 15 qualitative studies about mentoring women within sport. These 15 studies were selected by using both content and methodological screening. Each study was read, coded, and analyzed for themes based on the key elements of an effective mentoring relationship. The findings of the study revealed 10 themes and seven implications for female protégés, potential mentors, and organizations to consider when mentoring women within sport.
Wake Up Sleeping Beauty: Strong Heroines for Today's World
Authors: Kuon Dr. Tricia , Weimar Dr. Holly
Published: March 2023

Fairy tales have been described as the remains of ideas and social practices of the past (Yearsley, 1924). As thumbprints of history, fairy tales teach about the cultures of people while entertaining and explaining the world to the next generation (Yolen, 1992; Zeece, 1996). While the tales are valued as a kind of historical archive and a great source of entertainment, researchers have found that fairy tales have an impact in shaping the ways children view the world. Bettelheim (1976) stated that fairy tales are instrumental in stimulating the imagination of children. He and others maintain that fairy tales answer important questions about the world and how it works. These perceptions of how the world works are influential and long-lasting because the impressionable child will make judgments concerning what is admirable in terms of acceptable behaviors and character traits of people based on what they learn in fairy tales (Hurley, 2005; Storr, 1986; Yolen, 1992).
We Did It Our Way: Motivations, Satisfactions, and Accomplishments of Senior Academic Women
Authors: Gerdes Dr. Eugenia Proctor
Published: March 2023

In a survey of senior academic women whose careers began around 1970, over half of the 98 respondents cited the desire to serve or make a difference and sought personal fulfillment in their work. Most saw men's motivations as dissimilar, typically as more self-interested and competitive. Despite generally high satisfaction, dissatisfaction with time pressure/workload and with support was common. Satisfactions and accomplishments overlapped. Frequently mentioned were teaching, scholarship, and their discipline, especially by faculty, and programmatic accomplishments, especially by administrators. Many respondents mentioned helping women; many mentioned a collaborative, nurturing style as integral to their success and as different from their typical male colleagues. Context is provided by the metaphor of immigration (Martin, 1997, 2000), the concept of ambivalent sexism (Krefting, 2003; Glick & Fiske, 1999), and recent work on women and leadership by Eagly and colleagues (e.g., Eagly, 2005; Eagly & Carli, 2007).
The Leadership Discourse Amongst Female Police Leaders in Sweden
Authors: Österlind Malin , Haake Dr. Ulrika
Published: March 2023

Female leaders within the police force in Sweden are in a minority. Although their numbers are increasing, little is known about their experiences. By using interviews and discourse analysis, this article aims to analyse and construct the leadership discourse articulated by female leaders within the Swedish Police. It is argued here, as in previous research, that female leaders experience a range of different aspects in their roles as leaders. The female leadership discourse within the police is constructed around five themes of discussion: (a) the leadership style of good leaders is generally a transformational one; (b) a transactional approach to leadership is visible in relation to crisis situations; (c) extensive experience as a police officer is of importance; (d) leaders need support in different ways, and (e) experiences of being a "˜token' female in a male-dominated organisation is common. Above all, this article challenges the notion that a "˜feminine leadership style' exists. It is also argued that an intersectional perspective on police leadership is preferable, and that co-workers have an impact on leadership processes.
Differential Participation of Graduate Men and Women in Two Scientific Communities of Practice
Authors: Ferreira Dr. Maria M.
Published: March 2023

In this paper the differential participation of men and women in scientific communities of practice was examined in two graduate science departments. Data from a survey questionnaire and interviews with graduate students and faculty members were used to examine students' level of participation in their community of practice. Within each department, vital areas were identified which either limited or facilitated students' participation. Collaboration among the members of research teams, collegiality among research groups, and diversity within the academic and student bodies facilitated students' participation at various levels. In contrast, competition, lack of collaboration, and lack of collegiality and diversity, limited students' participation in their communities of practice.
Gender Issues in K-12 Educational Leadership
Authors: Sanchez Dr. Jafeth E. , Thornton Dr. Bill
Published: March 2023

This paper serves as a review of the research literature on gender issues in K-12 educational leadership, with a primary focus on the principal and superintendency positions in the United States. The prominent common themes or topics found in the literature are discussed. More specifically, barriers to gender equity in educational leadership are identified, and qualities or strategies used by successful female administrators where such barriers have been broken are noted.
Is it Really Helping? A Review of Women's "Self-Help" Literature
Authors: Lanier Cayla , Fine Zoe DuPree
Published: March 2023

In this article, we review recent popular literature about women in leadership at work. We focus on popular literature because of its extensive and diverse audience, and approach it as an indication of the status of women in the workplace: what is faced and how it is handled. In our review of the most frequently purchased books about women and leadership, we argue that these works' general message is as follows: women face difficulty getting ahead in their careers, women require advice about how to be successful leaders in their workplaces, and that advice instructs women that if they aspire to get ahead or even just stay afloat in systems that, for the most part, are still dominated by men and built on hegemonic values, then women employees must change aspects of themselves. We argue that this focus on individual women changing their behavior and appearance in the workplace fails to challenge systems issues that contribute to women's experiences as leaders in work. We conclude by inviting scholars to shift these conversations from how women should change to how everyone, including women, should work together to change workplace norms.
A Legacy of Leadership: Black Female Adult Educators
Authors: Rosser-Mims Dionne
Published: March 2023

This paper profiles the lives of four Black female adult educators whose leadership, power, and activism influenced the educational and political advances of the Black community. While it is not the author's intention to marginalize the stories of the women presented in this manuscript, Anna Julia Cooper, Charlotte Forten Grimke, Ida B. Wells, Septima Clark, and Fannie Lou Hamer made significant contributions as activists and educators who embodied teaching as a leadership style that focused on the development of others. Their struggles and lessons learned remain relevant even today. The biographical summaries presented on these remarkable female adult educators are an important reminder of how education became and remains the vehicle for social mobility and economic success that Black women used to not only improve their lives but also the quality of life for the Black community as a whole. Keywords: Forten Grimke; Ida B. Wells; Septima Clark; Fannie Lou Hamer; Adult Educators; Black Women; Adult/Continuing Education; Women and Gender Studies; Race, Ethnicity and Class
Women of Color in Community Colleges: Leadership Development
Authors: Gutierrez Keeton Rebecca , Currie Ding-Jo , Pizano Netasha
Published: March 2023

This quantitative study assessed the impact of the Kaleidoscope Leadership Institute (KLI) model of professional development on KLI on 140 participants’ personal and professional lives. The model was designed for community college women of color and led by female presidents/chancellors. Participants report gains in career and educational advancements, new networks, and mentorships across races/ethnicities and higher education positions. Researchers conclude that cross-cultural networking, mentoring, and identity development are beneficial and recommend that professional associations and institutions expand the KLI model to increase institutional leadership diversity.
Keywords: Community college, leadership development, women of color, identity-based leadership development, female college presidents, female leaders, mentoring, networking, identity development, institutional racism
Organization Development and Effectiveness: Essential Female Leadership Competencies for Industry 4.0 Transformation
Authors: Chuang Szufang , Eversole Barbara
Published: March 2023

This paper summarizes and synthesizes research evidence on different women leadership characteristics and behaviors from men and identifies essential female leadership competencies that are necessary to address the new challenges of today’s workplace and the paradigm shifts for female leaders to remain competitive in Industry 4.0. Recent neuroscience and social science research findings regarding women’s leadership characteristics and behaviors were reviewed and discussed. Critical leadership traits, abilities, and skills for (international) business success were studied. Six essential female leadership skill sets for Industry 4.0 were then proposed to provide human resource development practitioners a strategic framework that will be necessary for women leadership development and to promote gender equality in the workplace. Some feminine traits can be women’s leadership strengths such as sensing, listening, accepting, approaching, collaborating, supporting, and encouraging skills. Finally, implications for human resource development and recommendations for future research were provided.
Gender-Related Pay Equity by State and Industry
Authors: Sowadski Ronald
Published: March 2023

The purpose of this study was to examine whether there are differences in gender-related pay equity in the public sector, among states, and among industries in the United States. The study was conducted with archival data from The American Community Survey. Results of two one-way ANOVAs showed a significant difference in the gender-related pay equity among the 51 states (including D.C.), F(50, 1740) = 1.69, p = 0.019, and among the five major industries, F(4, 1735) = 17.00, p < 0.01. These empirical findings provide a basis for the development of policies needed to address pay inequity.
Are We Teaching College Women to Aspire for Elite Leadership Roles
Authors: Boatwright Karyn
Published: March 2023

In this longitudinal study we conducted annual interviews with 19 randomly selected college women for four years to ask them to describe the skills of an effective leader, their current leadership skills, post-college leadership aspirations, and college experiences that adversely and positively affected their aspirations for future leadership roles. As anticipated, growth and changes were not uniform among all participants; in fact, the varieties revealed a complex picture of women’s leadership aspirations and the leadership skill development they favored to enliven their aspirations, as well as the college experiences that shaped their evolving notion of their own desire for top leadership roles.

An analysis of their interview responses indicated that over the span of four years: although most women increased their beliefs that effective leaders should possess both relational and task-oriented skills, the majority reported that they developed stronger traditional authoritative leadership skills; women reported stronger leadership aspirations, particularly those who had developed stronger traditional leadership skills. Those who developed stronger relational skills reported lower leadership aspirations. Suggestions for leadership mentors, professors, administrators, college student personnel and faculty are presented.
“IT’S NOT ENOUGH TO HOLD THAT POWER”: THE GENDERING OF ADVICE IN CORPORATE DISCOURSE
Authors: Amaly Santiago  , Mariaelena Bartesaghi
Published: March 2023

In this qualitative study, we analyze advice literature written by corporate women for women readers who want to rise in the corporate ranks. Advice is pervasive social practice, and rests on an asymmetry of knowledge between authors and readers. We use discourse analysis to examine how authors of advice books deploy strategies to instruct, encourage, and exhort women to do better. We identify four strategies that expand on the current literature: pronoun choice and alignment, credibility, the assertion of necessity, and the use of metaphors. We find that advice literature re-creates narrow gender categories and dichotomous performances of gender for women to carry out. Rather than offer alternatives, advice to corporate women works toward ratification of gender norms, ratifying a notion of women’s shortcomings.
Cultural Competencies and Planning for Teaching Mathematics: Preservice Teachers Responding to Expectations, Opportunities, and Resources
Authors: Wilson Susanna , McChesney Jane , Brown Liz
Published: March 2023

In this article, the authors report on a small-scale study set in a context of a first-year mathematics education course for preservice primary teachers. Professional documentation from three different sources were analysed in relation to the national document TÄtaiako: Cultural Competencies for Teachers of MÄori Learners, which was used as a key course resource in a year-one mathematics education course for preservice teachers. The authors found evidence that the pre-service teachers used the resource to identify important learning and teaching practices, and as a source of language and examples. A further tentative finding was how relational aspects of teaching mathematics were adopted as indicators of culturally connected practice
Gender and Mathematics: What Can Other Disciplines Tell Us? What is Our Role?
Authors: Lubienski Sarah , Ataide Pinheiro Weverton
Published: March 2023

In this article, we begin by taking stock of broad trends related to gender and mathematics, focusing primarily on patterns within the United States. We then add some important nuance, discussing some ways in which patterns vary by social class and race. Given that much recent work on gender and mathematics has been situated outside of traditional mathematics education frames, we consider how ongoing work in psychology and gender studies can contribute to our understanding, using interview data from a study of woman’s experiences in a mathematics Ph.D. program. Ultimately, we argue that mathematics education researchers bring unique expertise to the table and have a particular role to play in building upon work in other fields to further the work on gender and mathematics.
Leveling the Playing Field
Authors: Friedrich Jami , Jenkins Tynetta
Published: March 2023

As a White cis-gender woman and an African American cis-gender woman who are educators and emerging scholars in the field of science, technology, engineering, and mathematics (STEM) education, we come together to review Black, Brown, Bruised: How Racialized STEM Education Stifles Innovation by Ebony Omotola McGee. This book review is based on our understanding of the inequities in the field of STEM education and the effects of these inequities on mathematics education. We invite the reader to join us in this conversation of recognizing the hardships and embracing the success of underrepresented racialized minority students in mathematics and other fields of STEM.
Teaching Mathematics and Science Through a Social Justice Lens
Authors: Pourdavood Roland Ghollam , Yan Meng
Published: March 2023

Abstract Teaching mathematics and science embedded in social justice is not a familiar concept for many teachers, especially pre-service teachers. This qualitative, descriptive, and interpretative study examines the experiences and reflections of 26 middle grade and secondary pre-service mathematics and science teachers on teaching and learning mathematics and science through the social justice lens as they took a semester-long course concurrently with their student-teaching. The primary research question was, “How may a semester-long course focusing on teaching and learning mathematics and science with social justice awareness provide pre-service teachers with opportunities to reflect on and change their teaching practices?” Data included researchers’ field notes and participating pre-service teachers’ verbal discussions, written reflections, and classroom presentations. The findings suggest that teaching mathematics and science in the context of social justice enhanced the pre-services teachers’ awareness of educational opportunity and equity. The findings also indicate teaching mathematics and science from the social justice perspective requires a paradigm shift in teaching and learning. Furthermore, the study exposes the limitations of the current school structure and culture for meaningful learning, the limitations of existing curricula and state-mandated texts, and the lack of adequate resources in teaching mathematics and science in social justice contexts.
Revisiting Urban Mathematics Education
Authors: Young Jamaal , Candace Raygoza Mary , Madkins Tia , Lawler Brian , Roberts Thomas
Published: March 2023

There are unique, enduring challenges related to mathematics instruction in urban schools, and the most common concerns are related to issues of equitable access to mathematics learning opportunities. In this editorial, we argue that the complexity of teaching mathematics in urban schools requires the attention of mathematics scholars with unique training, expertise, and experiences. Developing mathematics instruction for urban spaces often involves refined research techniques, multi-disciplinary perspectives, and collaboration between diverse stakeholders. Specificity is the key to addressing these challenges. However, to date, the Journal of Urban Mathematics Education (JUME)—out of 69 mathematics education-focused journals (Nivens & Otten, 2017)—is the only journal venue devoted to mathematics teaching and learning in urban environments. Although other mathematics education journals and conferences accept scholarship related to urban schools, due to the vast nature of mathematics education research and limitations in journal space, the nuances of specific issues in urban mathematics education (e.g., preparing mathematics teachers well for high-needs urban schools) are underexamined and poorly understood.
Learning to Teach Mathematics in Urban High Schools: Untangling the Threads of Interwoven Narratives
Authors: Chu Haiwen , Rubel Laurie H.
Published: March 2023

In this article, the authors explore learning about equity pedagogy in mathematics by focusing on the experiences of a teacher and teacher educator within the Centering the Teaching of Mathematics on Urban Youth project. One teacher’s story is interwoven as a counterpoint and specific trajectory within the broader narrative provided by the teacher educator. Key themes addressed include the nature of teaching mathematics, identity and position, and developing culturally relevant mathematics pedagogy. The authors’ goal is not to report on the effects of a mathematics teacher professional development program per se, but rather to open the conversation, between teacher and teacher educator, to a broader audience.
Latina/o Youth's Perspectives on Race, Language, and Learning Mathematics
Authors: Zavala Maria del Rosario
Published: March 2023

In this article, the author employs critical race theory (CRT) and Latino Critical Theory (LatCrit) to examine Latina/o students' narratives of learning mathematics in a multi-lingual, urban high school. Intersectionality as a tenet of LatCrit is introduced as an important way to understand how students talk about the roles of race, language, and other central identities in their mathematics identity development as well as how they believe race may or may not matter in other people's mathematics achievement. The author's analysis illustrates how mathematics identities are co-constructed in relation to racial, linguistic, and gendered narratives of Latina/o youth. In general, the study adds empirical evidence to previous research on the difficulties that high school students encounter when articulating how race matters to their own identities in academic subjects and highlights the nuanced ways Latina/o students make connections between race, mathematical achievement, and schooling experiences in and through narratives of school success and failure.
Negotiating Perceptions of Tracked Students: Novice Teachers Facilitating High-Quality Mathematics Instruction
Authors: Yanisko Emily Joy
Published: March 2023

In this article, the author reports on a participant-observation case study that explored how alternatively certified, middle school teachers' expectations of tracked students affect their ability to learn to teach in ways that promote students' mathematical struggle and participation in productive mathematical discussions. Two teachers--one teaching a "high-tracked" course and the other a "low-tracked" course--were participants. Both teachers initially held perceptions of their students that limited their efficacy and self-efficacy with respect to providing high-quality mathematics instruction. However, through program- and school-based mentoring, including participation in a modified reflective-teaching cycle, the teachers learned to learn from their teaching and modify their practice. Both teachers began to allow their students opportunities to struggle with rigorous mathematics and partici-pate in student-centered discussion.
Mission to Serve Tech: Churches "Lock Down" Technology During The Global Pandemic
Authors: Campbell Heidi A. , Daly Jennifer , Osteen Sophia A. , Wallace Andrea
Published: March 2023

This report analyzes data collected from 2700 churches of the Center for Congregations in Indianapolis through the Connect Through Tech grant program between 2020-2021. This report analyzes data gathered from applications to the CTT grant and final reports submitted by these churches, in order to learn how churches understand and perceive the role of churches, technology, and their relationship changed during the first two years of the pandemic as they incorporated digital media into their ministry work. The “Mission to Serve Tech” report explores three key themes: (1) how leaders understanding of the mission of the church may have changed during the pandemic, (2) the general understanding of how churches conceptualize the relationship between church and technology before and then later during the pandemic, and (3) the ways technology created both unique opportunities and new challenges that cause churches perceptions and actions to shift in new ways. Important findings of this report include that most churches (84.7%) used their grant funds to purchase live-streaming services and camera/video equipment (82%).
Determining rational parameters for the impeller of a hydraulic excavator with a crowding mechanism
Authors:   Karaganda State Technical University, Bezkorovainyi Pavel , Shestakov Viktor ,   Ural State Mining University
Published: March 2023

Introduction. The rationale for the research is conditioned by the need to improve the efficiency of hydraulic excavators which affect the prime cost of mining significantly. Research objective is to improve the design of hydraulic excavator impeller and develop the methods of determining impeller’s rational parameters ensuring its weight reduction. Methods of research. A model of hydraulic excavator with an impeller including a boom, a dipper arm, bucket, and hydraulic slewing cylinders for a boom, a dipper arm, and a bucket. For a front shovel hydraulic excavator, a new design has been developed that excludes hydraulic cylinders for a beam which are used in a base model of hydraulic excavator; a pressure rod is used for boom travel. In the developed scheme of the impeller, a superstructure is installed on the slewing ring, a crowding mechanism for the pressure rod extension is installed in the upper part of the superstructure. The pressure rod is connected to the fore boom and runs inside the saddle bearing. Such scheme allows excluding boom slewing cylinders, reduce the bending moment that has effect on the boom, which is going to reduce the boom cross section and therefore its mass. A mathematical calculation model for excavation coordinates and forces has been developed, as well as an algorithm and software on the Visual Basic language for applications, allowing to determine possible forces in the impeller elements within the limits of the working area. The force values are used when optimizing according to the mass criterion to select the cross section of a boom and dipper arm and for cylinders’ location. The mass criterion application and a restriction in a form of the required technological parameters implementation when operating in the preset mining and technological conditions will allow selecting rational parameters for the impeller’s elements. Results. Changes in the arrangement of elements (elimination of boom slewing hydraulic cylinders and the arrangement of the crowding mechanism on the rotation axis) makes it possible to improve the bucket tonnage, and therefore, the excavator’s capacity. The developed methods of determining the excavator design parameters also ensures the working zone construction and bucket teeth forces calculation within its limits in order to prove the possibility of implementing the operating functions of the new model designed.
Evaluating the adaptability and stability of common peanut varieties (Arachis hypogaea L.) in Northern Mozambique using the AMMI Bayesian model
Authors: Nuvunga Joel Jorge , Mendes Cristian Tiago Erazo , Silva Alessandra Querino da , Oliveira Luciano Antonio de , Silva Carlos Pereira da , Andarusse Lídia , Filho Júlio Sílvio de Sousa Bueno
Published: March 2023

This study evaluated the stability and adaptability of common peanut cultivars (Arachis hypogaea L.) in three locations across northern Mozambique over four years, using the additive main effects and multiplicative interaction model (AMMI) under a Bayesian approach. The multi-environmental data consisted of 20 genotypes evaluated in three locations. We analyzed grain yield in tons per hectare in a complete randomized block design for each location. The results indicated that genotypes with higher marginal yield contribute to the genotype by environment interaction (GEI) and thus are not largely recommended for the entire target environment. The Namapa (NMP) location showed consistent behavior and did not contribute to the GEI effect, and in this sense, G6 and G7 would be the best indications for this location. Moreover, genotypes considered stable, with emphasis on the G20 genotype, did not have a good average yield. Mapupulo (MPPL) and Nampula (NLP) had a significant contribution to GEI, and the best genotypes for these locations were G7 and G3, respectively. In this sense, the results of the analysis specified that using genotypes in specific environments would be the best strategy to decrease the effect of GEI and increase peanut productivity in the environments considered
Phosphorus fertilizer with increased efficiency affects soybean yields
Authors: Souza Carlos Henrique Eiterer de , Ribeiro Victor Gustavo Soares , Gonçalves Lara Lúcia , Borba Mateus Gonçalves de , Reis Jr Roberto dos Anjos
Published: March 2023

Phosphate fertilization is an important tool for achieving high yields in soybean, especially in tropical soils where phosphate fertilization efficiency is low. Fertilizers with improved efficiency, such as polymer-coated fertilizers, are one of several strategies to increase P fertilization efficiency. The objective of this study was to evaluate plant growth, leaf P content, soybean yield, and P fertilization efficiency in different seasons in response to P rates and sources. A factorial experiment (2 x 4) + 1 using two P sources (monoammonium phosphate (MAP) and Policote-coated MAP), four P rates (40, 80, 120, and 160 kg P2O5 ha-1), and the control (no P fertilization) was conducted with soybean in the 2016-2020 seasons. Phosphate fertilization increased soybean yield and was affected by P rates and sources. Soybean yield increased from 1464.7 kg ha-1, 468.4 kg ha-1, and 2297.3 kg ha-1 without P fertilization to 3,638.5 kg ha-1, 3,682.1 kg ha-1, and 3,856.7 kg ha-1, respectively, when MAP was applied at 158.0, 125.3, and 160 kg ha-1 P2O5, while when Policote coated MAP, the maximum productivity was 3,950.3 kg ha-1, 4,380.5 kg ha-1 and 4,343.0 kg ha-1 with 159.0, 160.0 and 140.1 kg ha-1 P2O5, respectively, in 2017/2018, 2018/2019 and 2019/2020 seasons. Increasing phosphate fertilizer rates decreased agronomic P use efficiency (APUE), which was mitigated by P-coated fertilizer (fertilizer with improved efficiency). Lower APUE was observed in the 2019/2020 season, likely as a result of residual effects from previous phosphate fertilizer applications
QUESTÕES REGULATÓRIAS SOBRE A DESINFECÇÃO DA ÁGUA E O IMPACTO DA GERAÇÃO DE DBPs NA QUALIDADE DA ÁGUA TRATADA
Authors: Vizioli Beatriz , Montagner Cassiana
Published: March 2023

REGULATORY ISSUES ON WATER DISINFECTION AND THE IMPACT OF DBP GENERATION ON DRINKING WATER QUALITY. Drinking water disinfection has been viewed as one of the major advances in public health protection in history. However, while it has been very successful in assuring microbiological safety, disinfection also brought relevant concerns about chemical safety and the potential unintended health hazards associated with disinfection byproduct (DBP) exposure. DBPs represent one of the most important groups of chemical compounds to which humans are exposed through drinking water, as epidemiological studies have consistently associated long-term exposure with multiple adverse health effects. It is established that disinfection is an essential component of providing microbiologically safe drinking water and shall never be compromised. Yet, chemical safety regarding DBP exposure remains a largely uncovered and highly discussed topic. Several DBPs have been reported in the past few decades, yet research on formation, toxicity and occurrence remains scarce for most compounds. Also, for each identified DBP, many remain undiscovered. In view of an ever-growing list of DBPs and the existing gaps in available research, identifying overall driving agents of toxicity is still a major challenge for public health protection. This review attempts to provide an insight on contemporary issues regarding the overall safety of drinking water and the trade-off between microbiological and chemical risks, considering current challenges in water and sanitation access and existing regulations.