bluuebunny/crossref_metadata_2025 huggingface dataset:
Ensuring Social Justice for English Language Learners
Authors: Vega Juan A. Rios , Arquette Cecile M. , Lee Hwa , Crowe Heljä Antola , Hunzicker Jana Lynn , Cushing Jane
Published: January 2021

Bradley University's embedded English as a Second Language (ESL) endorsement program was first implemented during the 2015-2016 academic year. This program consists of eighteen credit hours of course work specified by the Illinois State Board of Education in order to prepare teachers to work with students who do not speak English as their first language. Now in its second year, early outcomes of the program are quite positive. This chapter describes the program and its development in detail, and analyzes the program's strengths and weaknesses, focusing especially on teacher candidates' knowledge of pedagogy and cultural awareness as it relates to social justice in education for English language learner (ELL) students. The chapter concludes with recommendations for programming and future research.
Ready Together
Authors: Suárez Alpha Martínez , Lindahl Kristen M.
Published: January 2021

Many challenges that English learners (ELs) face are compounded for children and families from undocumented immigrant backgrounds. Educators, school support staff, community-based organizations, and other service providers play key roles in advocating during a sudden immigration crisis. A sudden immigration crisis occurs when children experience the sudden loss of a caregiver or family member due to deportation procedures. This chapter describes a “Ready Together” (RE-TO) rapid response initiative, which consists of three components: First, it provides a rationale as to why teacher education programs should prepare future educators to respond in case of sudden immigration crisis. Second, it conceives of a “rapid response team” for schools working with students from diverse immigration backgrounds that includes roles and responsibilities for administrators, counselors, and teachers, and third, it provides examples of emergency preparedness plans, workshop topics and materials that prepare families with documents and directives in case of a sudden immigration crisis.
Moving Toward Culturally Restorative Teaching Exchanges
Authors: Re'vell Mike D
Published: January 2021

The assumed achievement gap between students of color and their counterparts continues to be a source of public concern. Educators have reacted to this difference in achievement by allocating more and more instructional time to covering instructional content through direct instruction, remediation and memorization of lower order skills without regarding the contextual factors that influence instructional delivery. For more than three decades Geneva Gay has advocated for teachers to match instruction. However, despite best practices culturally responsive teaching still continues to be under-used by teachers. This article explores the use of restorative practices as a mediator for improving teacher sense of efficacy or future facing self-evaluations of knowing what and how to use culturally responsive teaching practices.
Using Personal Learning Environment (PLE) Management to Support Digital Lifelong Learning
Authors: Yen Cherng-Jyh , Tu Chih-Hsiung , Sujo-Montes Laura E , Harati Hoda , Rodas Claudia R.
Published: January 2021

Personal Learning Environment is a promising pedagogical approach to integrate formal and informal learning in social media and support student self-regulated learning. The use of PLEs to support lifelong learning can be expanded to the formal, non-formal, or informal learning environments. This study empirically examined how PLE management predicted the use of PLE to support three types of lifelong learning (i.e., formal, non-formal, or informal learning). This study concluded that PLE management was predictive of each type of learning respectively. PLE is not only a technical platform but also a new digital learning literacy, conceptual space, pedagogical process, and social networks that enable and support learners to achieve their lifelong learning goals. While Open Educational Resources (OERs) are perceived as a solution for social justice in digital lifelong learning, PLE and Open Network Learning Environment are identified as the key pedagogy and instructional strategies to empower learners gaining network-learning literacy and becoming competent digital lifelong learners.
Integrating Critical Pedagogy With Teaching Statistics for Social Justice
Authors: Conway IV Basil , Lilly Kristin
Published: January 2021

The following chapter describes the creation and implementation of a “Content Underpinnings” course for graduate students in middle grades statistics that required students to complete a teaching for social justice lesson in a K-12 classroom. The content underpinnings course consisted of three major goals that promoted critical thought: critical race theory (CRT) and teaching for social justice (TSJ), statistical pedagogical content knowledge, and statistical content knowledge. A review of research related to each these goals is integrated with student implementation of a CRT/TSJ lesson, along with details on how this research guided the course creation and implementation. Implications and suggestions for including CRT and TSJ in mathematics are suggested as a tool to promote equity, access, and empowerment for democracy in teacher education.
Lessons Learned From 15 Years of Service-Learning
Authors: Simons Lori , Fehr Lawrence , Greene Lake
Published: January 2021

This chapter describes lessons learned from students involved in a service-learning program in an urban school district during the past 15 years. A total of 729 undergraduate students enrolled in an educational psychology course took part in the study. Students completed a survey at the beginning and end of the course. The findings indicate that academic-based service-learning and cultural-based service-learning contribute to different learning outcomes. Academic-based service-learners develop intercultural relationships with service recipients and community partners and acquire an understanding of social disparities in the community while cultural-based service-learners develop interpersonal and problem-solving skills. Students also appeared to make meaning out of their diverse service experiences and acquired a deeper understanding about how social responsibility is part of their role as preservice teachers in their school community. Implications for incorporating CBSL strategies in a teacher education program are discussed.
Moving Toward a Third Generation of Medical Education
Authors: Green Wendy M.
Published: January 2021

The number of health professions education programs continues to increase across the United States and globally, but unequal access to healthcare remains a pressing issue. Health professions education has shifted from a first-generation approach, centered on didactic teaching, to a second-generation approach, centered on problem-based learning. In a Lancet paper, Frenk and colleagues argued for the incorporation of a transformative paradigm within health professions education facilitating the move towards the third generation of health professions education. Drawing on Mezirow and Freire, they argued for the incorporation of a transformative paradigm to improve health professions education by better aligning medical education and population needs. This chapter examines how a transformative approach to health professions education could be implemented and where it would be most effective. It also looks at how a transformative paradigm within health professions education could provide an additional lens to understand health disparities, structural inequity, and diversity.
The Aotearoa New Zealand Curriculum Te Whāriki as a Basis for Developing Dispositions of Inclusion
Authors: Gaffney Michael , McAnelly Kate
Published: January 2021

Over the last 20 years Aotearoa New Zealand's early childhood curriculum, Te Whāriki, has required and supported inclusive approaches to the active participation of disabled children and their families in everyday early childhood settings. The revised Te Whāriki, released in 2017, further places an onus of responsibility on teachers to resist inequity and exclusion experienced by disabled children through its focus on nurturing respectful, responsive relationships with families and honoring the knowledge parents bring with them as experts on their children. This chapter explores how Te Whāriki and initial teacher education (ITE) programs in Aotearoa New Zealand can act on each other to produce student teacher practice that is inclusive of family perspectives. Te Whāriki is a bicultural curriculum and recognizes the Crown's earlier commitment to the indigenous people of New Zealand. This also acknowledges the role of families in early childhood settings as equal partners in establishing aspirations for their children's learning.
Developing Social Justice and Inclusion Competencies Through Semi-Structured Reflection Papers
Authors: Vaccaro Annemarie , D'Aloisio Brooke , Hoyt Tiffany , Chartelain Athina , Croft Sarah D , Stevens Brian
Published: January 2021

As higher education institutions strive to foster cultural inclusion, it is imperative that university employees develop relevant competencies. This chapter offers insight into one “best practice” for fostering social justice and inclusion competencies. A professor and former students discuss the benefits of using self-reflection papers for competency development. The chapter begins with an overview of social justice and inclusion competencies for higher education and student affairs professionals. That section is followed by a description of graduate-level courses and reflection paper assignments aimed at developing social justice and inclusion competencies. The majority of the chapter focuses on the educational process (e.g., meaning-making, critical reflection) and products (e.g., awareness, knowledge, skills, action) of semi-structured reflection papers. Recommendations for future practice and research are included.
Maintaining a Socially Just Classroom
Authors: Lalas Jose W. , Lalas Joanna Linda
Published: January 2021

This chapter presents an ethical decision-making for student engagement from a social justice perspective. It discusses what social justice means by presenting some principles gathered from existing related research literature supported by teacher voices that are gathered from written survey. Student engagement and the factors that influence it are discussed highlighting them from a socially and culturally situated perspective. Motivational and sociocultural factors such as funds of knowledge, race, social capital, and cultural capital are presented to demonstrate why mere access is not enough as an ethical and equitable way of engaging student to achieve positive outcomes. Access must be activated by providing students ample opportunities to experience a sense of belonging, teacher trust that they are competent learners, recognition of their identities and interests, and meaningful engagements.
The Role of University Leadership in Advocating Social Justice in South African Higher Education
Authors: Jappie Naziema Begum
Published: January 2021

Higher education institutions in South Africa are undergoing remarkable changes. Traditionally, universities have been governed on a scholastic, academic, and research basis. This promoted an authoritarian and autonomous governance system, which clearly justified separate education under apartheid. The new democracy in South Africa vowed to change the system to ensure equity, diversity, and justice in education. Universities had to transform to benefit the underprivileged, disadvantaged, Black population of the country. This resulted in universities having to conduct their activities in a corporate style and, as such, required a commitment by all stakeholders to succeed. University leaderships are important role players who are pivotal in ensuring that social justice prevails. This chapter will investigate the role of leadership in shaping vision and mission in addition, ensuring policy implementation at the various higher education institutions.
Guaranteeing User Rates With Reinforcement Learning in 5G Radio Access Networks
Authors: Comşa Ioan-Sorin , Zhang Sijing , Aydin Mehmet Emin , Kuonen Pierre , Trestian Ramona , Ghinea Gheorghiţă
Published: January 2021

The user experience constitutes an important quality metric when delivering high-definition video services in wireless networks. Failing to provide these services within requested data rates, the user perceived quality is strongly degraded. On the radio interface, the packet scheduler is the key entity designed to satisfy the users' data rates requirements. In this chapter, a novel scheduler is proposed to guarantee the bit rate requirements for different types of services. However, the existing scheduling schemes satisfy the user rate requirements only at some extent because of their inflexibility to adapt for a variety of traffic and network conditions. In this sense, the authors propose an innovative framework able to select each time the most appropriate scheduling scheme. This framework makes use of reinforcement learning and neural network approximations to learn over time the scheduler type to be applied on each momentary state. The simulation results show the effectiveness of the proposed techniques for a variety of data rates' requirements and network conditions.
Exploring SDN & NFV in 5G Using ONOS & POX Controllers
Authors: Bouras Christos , Kollia Anastasia , Papazois Andreas
Published: January 2021

This article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.
Dynamic Cache Management of Cloud RAN and Multi-Access Edge Computing for 5G Networks
Authors: Pathinga Rajendiran Deepika , Tang Yihang , Moh Melody
Published: January 2021

Using a cache to improve efficiency and to save on the cost of a computer system has been a field that attracts many researchers, including those in the area of cellular network systems. The first part of this chapter focuses on adaptive cache management schemes for cloud radio access networks (CRAN) and multi-access edge computing (MEC) of 5G mobile technologies. Experimental results run through CloudSim show that the proposed adaptive algorithms are effective in increasing cache hit rate, guaranteeing QoS, and in reducing algorithm execution time. In second part of this chapter, a new cache management algorithm using Zipf distribution to address dynamic input is proposed for CRAN and MEC models. A performance test is also run using iFogSim to show the improvement made by the proposed algorithm over the original versions. This work contributes in the support of 5G for IoT by enhancing CRAN and MEC performance; it also contributes to how novel caching algorithms can resolve the unbalanced input load caused by changing distributions of the input traffic.
Key Microwave and Millimeter Wave Technologies for 5G Radio
Authors: Milosevic Vojislav , Jokanovic Branka , Boric-Lubecke Olga , Lubecke Victor M.
Published: January 2021

This chapter presents an overview on the drivers behind the 5G evolution and explains technological breakthroughs in the microwave and millimeter wave domain that will create the 5G backbone. Extensions to millimeter wave frequency bands, advanced multi-antenna systems and antenna beamforming and simultaneous transmission and reception are some of the prospects that could lead to both architectural and component disruptive design changes in the future 5G. 5G is expected to include an innovative set of technologies that will radically change our private and professional lives, though applications of novel services, such as remote healthcare, driverless cars, wireless robots and connected homes, which will alter boundaries between the real and the cyber world.
Resource Management of Mixed Unicast and Multicast Services Over LTE
Authors: Araniti Giuseppe , Condoluci Massimo , Pizzi Sara , Molinaro Antonella
Published: January 2021

In recent years, mobile operators are observing a growing demand of multicast services over radio cellular networks. In this scenario, multicasting is the technology exploited to serve a group of users who simultaneously request the same data content. Since multicast applications are expected to be massively exchanged over the forthcoming fifth generation (5G) systems, the third-generation partnership project (3GPP) defined the multimedia broadcast multicast service (MBMS) standard. MBMS supports multicast services over long-term evolution (LTE), and the 4G wireless technology provides high quality services in mobile environments. Nevertheless, several issues related to the management of MBMS services together with more traditional unicast services are still open. The aim of this chapter is to analyze the main challenges in supporting heterogeneous traffic over LTE with particular attention to resource management, considered as the key aspect for an effective provisioning of mobile multimedia services over cellular networks.
The Impact of the COVID-19 Pandemic on Stock Markets
Authors: Dias Rui , Pereira João Manuel
Published: January 2021

COVID-19 has had a marked impact on the global economy, resulting in uncertainty, pessimism, and adverse effects on financial markets. In light of this event, this paper aims to test whether the evolution of COVID-19 (confirmed cases and deaths) is responsible for the stock market indices in eight European countries, from December 31, 2019 to July 23, 2020. Two key research questions have been raised to determine this causal link: Does the increase in COVID-19 cases and deaths cause shockwaves in Europe's financial markets? If so, does the presence of long memories cause high levels of arbitration? The results show mostly structural breaks in March 2020. In contrast, the VAR Granger Causality/Block Exogeneity Wald Tests model shows that the COVID-19 data series (confirmed cases and deaths) do not cause shocks in Europe's financial markets, which in return does not validate the first research question. The results of the exponents detrended fluctuation analysis (DFA) shows significant long memories ranging between 0.61-0.73.
Efeitos da inovatividade e dos investimentos em inovação e meio ambiente no desempenho de empresas brasileiras e espanholas
Authors: Farias Ivaneide Ferreira , Silva Clayton Robson Moreira da , Souza Jackeline Lucas , Vasconcelos Alessandra Carvalho , Cabral José Ednilson de Oliveira
Published: January 2021

Este estudo objetivou analisar os impactos da inovatividade e dos investimentos em inovação e meio ambiente no desempenho de empresas brasileiras e espanholas. Trata-se de uma pesquisa descritiva e com abordagem quantitativa, em que foram realizadas análises de regressão linear múltipla. Como variáveis dependentes, foram adotadas medidas de desempenho em valor, aferida pelo Q de Tobin, e de desempenho em lucro, aferida pelo EBITDA. A amostra compreende 75 empresas de capital aberto, sendo 41 brasileiras e 34 espanholas, no período de 2011 a 2016. Os resultados sinalizaram efeito positivo da inovatividade e dos investimentos em inovação no desempenho em valor, nas empresas brasileiras. Já em relação às empresas espanholas, observou-se influência positiva apenas da inovatividade sobre o desempenho em valor. Ainda, verificou-se que os investimentos ambientais das empresas brasileiras influenciaram positivamente os desempenhos em valor e lucro, enquanto, nas espanholas, foram constatados efeitos desses investimentos apenas no desempenho em valor. Em conclusão, em termos gerais, as ações inovativas e ambientais impactaram positivamente o desempenho das empresas investigadas.
Suavização de dividendos no Brasil: Uma verificação dos efeitos resultado e substituição
Authors: Prazeres Rodrigo Vicente , De Araújo Juliana Gonçalves , Lagioia Umbelina Cravo Teixeira
Published: January 2021

Este estudo teve por objetivo identificar e compreender o padrão de suavização de dividendos praticado pelas companhias brasileiras listadas na Bolsa, Brasil e Balcão (B3). Assim, considerando as especificidades do estágio de desenvolvimento do mercado de capitais brasileiro e as características institucionais derivadas do regime jurídico code law, a suavização de dividendos foi investigada a luz dos efeitos resultado e substituição. A metodologia foi conduzida por meio da estimação do modelo de ajustamento parcial de Lintner (1956) utilizando o método de análise de regressão com dados em painel de efeitos fixos. Como resultados, este estudo oferece evidências de que, no Brasil, há uma menor propensão de suavização de dividendos e que esta observação pode estar relacionada com o estágio de desenvolvimento do mercado de capitais brasileiro e com as deficiências do ambiente de governança corporativa derivadas do regime jurídico code law, o que implica na aceitação do efeito resultado.
A relação de políticas econômicas e de fatores macroeconômicos com o desempenho do mercado de ações brasileiro
Authors: Caluz Antonio Daniel Ricardo Engracia , Magnani Vinícius Medeiros , Gomes Matheus da Costa , Ambrozini Marcelo Augusto
Published: January 2021

Um dos desafios da discussão sobre os determinantes do desempenho do mercado acionário é descobrir como os retornos dos investidores são afetados com as mudanças econômicas, via políticas ou choques de mercado. Diante disso, este trabalho tem como objetivo analisar a relação entre a credibilidade da política monetária e o desempenho do mercado acionário brasileiro. Para isso, foram aplicados modelos de séries temporais, VAR e VECM, em dados mensais de janeiro de 2003 a maio de 2016. Ressalta-se que uma das preocupações do trabalho foi construir um modelo contendo variáveis macroeconômicas nacionais e internacionais que possam afetar o desempenho do mercado de ações brasileiro. Os resultados apontam para a existência de um equilíbrio de longo prazo em que o desempenho do mercado de ações é afetado positivamente pela credibilidade do regime de metas de inflação. O mesmo também sofre influência da política fiscal e do cenário macroeconômico, principalmente pela dívida pública, taxa de juros e taxa de câmbio.Com isso, o presente trabalho contribui para demonstrar a analistas, investidores e órgãos reguladores que as políticas econômicas afetam o desempenho do mercado de ações no Brasil, em especial apolítica monetária sob um regime crível de metas inflacionárias.
High-Throughput Characterization of Composition and Performance of Titanium Alloys Based on Nanoindentation Technology and EPMA
Authors: Gao Yu , Yu Hong , Zhou Yu , Zhu Xin Jie , Fan Qun Bo
Published: January 2021

Traditional high-throughput experiments increase the test efficiency by designing component gradient tests and other methods. This article intends to improve the traditional high-throughput experiments and proposes an experimental scheme combining nanoindentation technology and electron probe microanalysis (EPMA). Based on a new Ti-Mo-Al-Zr-Cr-Sn alloy, micro-region composition and corresponding performance at multiple indentations are directly characterized, including a series of different alloy compositions composed of 8 elements such as Mo, Al and the corresponding hardness (H) and elastic modulus (E). Then the principal analysis method in statistics, the theory of molybdenum equivalent and aluminum equivalent are used to process the obtained data, and a series of atlases such as "E-H-component characteristic parameters" and "E-H-alloy equivalents" are constructed, which has achieved high-throughput characterization of the relationship between composition and performance of titanium alloy. Related work can not only quickly determine the alloy composition range corresponding to high E and high H values, but also provide guidance for further optimization of titanium alloy composition design.
Optimal Design of Composite Material Maintenance Structure for Aircraft Based on ANSYS Workbench
Authors: Dai Jing Tao , Zhao Pei Zhong , Su Hong Bo , Liu Hao Dong , Wang Yu Bo , Dong Shi Kang
Published: January 2021

Composite material is widely used to maintain damaged structures of aircraft. The 3D finite element model of composite cement maintenance for aircraft is established by finite element method software ANSYS Workbench. The structural characteristics and usage status of the composite cement maintenance model is analyzed, and then the optimal structural parameters of the composite patch are obtained, including the length, width and thickness. The results show that the composite cement maintenance method could effectively restore the rigidity, and improve the strength of the structure. Furthermore, the optimal design for composite patch ensures safety of aircraft, economics of maintenance, and operability of repair methods.
Effect of Laser Processing Parameters on Microhole Quality of Aluminium Nitride Ceramics
Authors: Yang Chun Yan , Hao Yun , Wang Bozhe , Yuan Hai , Li Liu Hui
Published: January 2021

A picosecond laser in spin-cutting mode was used to drill 500μm diameter microholes on 150μm thick aluminium nitride ceramic. The effects of laser processing parameters such as the laser power, scanning speed, and defocus amount on the microhole quality were studied. The results show that as the laser power increases, the inlet and outlet diameters of the holes increase, the taper decreases slightly, and the thickness of the recast layer decreases evidently. The scanning speed has no obvious effect on the diameter and taper of the hole; however, the hole can not be drilled through when the speed is too large. Positive defocus can effectively reduce the taper of the hole. Under 28.5W laser power, 400Hz frequency, 200mm/s scanning speed, and zero defocus amount conditions, high-quality microholes with a taper of 0.85° were obtained.
Microstructure and Mechanical Properties of W-High Entropy Alloy Composite by Hot Swaging
Authors: Jian Rui Zhi , Zhou Shang Cheng , Xue Yun Fei
Published: January 2021

To improve the mechanical properties of a sintered WHA using high entropy alloy as the matrix (W-HEA), investigations were carried out to apply deformation strengthening method of hot swaging on the W-HEA. The W-HEA samples were swaged around 1300°C with the 10%, 15% and 20% of reduction in area. The results show that the strength and hardness of the W-HEA composite increased with the increasing degree of deformation. And the aspect ratio of tungsten grains increases along the axial direction in the swaged alloys. The hardness of W-HEA with a 20% reduction in area reaches 448 HV, and the dynamic compression yield strength is about 1911 MPa. After hot swaging, the hardness and strength of the W-HEA are greatly improved compared with the sintered W-HEA.
Stress Loss of Pre-Tensed CFRP Strips Strengthening Square RС Column
Authors: Wu Zhao Qi , Shi Min , Wu Sheng Ping , Li Hua , Liu Han
Published: January 2021

Pre-tensing the CFRP strip strengthening RC column can improve the strain lag of the confined concrete and avoid unloading of column in advance. The pre-stress of strip has an important influence of strengthen. Stress loss of the strip pre-tensed by using the device proposed were investigated by using an experimental test. Firstly, the reasons for the stress loss of strip were analyzed according to the working principle of the device and the strengthening procedure. Then the primary causes of the stress loss, such as friction, relaxation and removing device, were experimentally tested. The influence of the pretension, detail and sectional geometric dimension on the stress loss of the strip were studied. The results show that all three types of pre-stress losses increase significantly with the initial stress. Increasing the cross-sectional size would reduce the relaxation and unwinding losses, but it has little effect on friction losses. The influence of fillet radius on the pre-stress loss was negligible, but in order to avoid premature tearing of local CFRP caused by stress concentration, the chamfer should be made as large as possible within the thickness of concrete protective cover. The test also found that friction was the main cause of stress loss, and friction loss accounts for more than 90% of the total loss.
Performance Test of C60 Self-Compacting Steel Fiber Concrete
Authors: Li Fang Hua
Published: January 2021

Self-compacting steel fiber concrete must meet the strength standard after steel fiber is added and must have good fluidity. The test results show that the addition of steel fiber to concrete will affect the fluidity of concrete. Compared with ordinary concrete, the addition of steel fiber will improve the compressive strength and flexural tensile strength of concrete to varying degrees. The mix proportion test can be carried out in stages, i.e. the mix proportion meeting all performance indexes used is determined first, then steel fiber is added and adjusted to determine the best mix proportion.
A Novel Approach to Characterize the Quantity and Distribution of Microorganisms in Microbial Self-Healing Cementitious Materials
Authors: Chen Qin Wen , Qian Chun Xiang
Published: January 2021

Microorganisms can effectively heal the cracks of cementitious materials through the formation of calcium carbonate by microbial mineralization deposition, which has a wide application prospect in cementitious materials. In order to analysis the activity change and distribution of microorganisms in cementitious materials, this paper prepared cement pastes incorporated microbial powder, and extracted microorganisms by pre-crushing, grinding and ultrasonic, at the age of 3, 7 and 28 days respectively. The relationship between the optical density and effector cells is near linear fit, reflecting the activity change and specific distribution of microorganisms in cement paste specimen of different ages. The in-depth research on the activity change and distribution of microorganisms in the microbial cementitious materials can effectively characterize the microorganisms in the cementitious materials, which has a guiding role in microbial self-healing cementitious materials.
Research on Deformation Prediction Method of Laser Melting Deposited Large-Sized Parts Based on Inherent Strain Method
Authors: Duan Cheng Hong , Cao Xian Kun , Zhao Ming Huang , Luo Xiang Peng
Published: January 2021

In the process of metal parts fabricated by Laser Melting Deposition (LMD), a high temperature gradient will generate due to the instantaneous high laser energy input, which will cause residual stress in the formed part of metal parts, the residual stress will result in defects like warping deformation or even cracking. In this paper, a finite element method based on inherent strain method is proposed to predict the deformation of metal parts fabricated by LMD. Firstly, combing with the birth and death element technology, a local model is established to simulate the layer-by-layer deposition in the LMD forming process, and the values of inherent strain is obtained. Secondly, the obtained inherent strain values is applied to large-sized part layer by layer, and the final deformation of large-sized part is calculated. Based on the proposed method, the efficiency of deformation prediction of large-sized metal parts fabricated by LMD could be effectively improved.
Analysis of the Crack of 304 Stainless Steel and Improvement Measures
Authors: Guo Lei
Published: January 2021

Stainless steel is more and more widely used in industry and life. 304 stainless steel has been widely used because of its lower price and better corrosion resistance. In this paper, according to the phenomenon of the crack of the adapter strip made of 304 stainless steel when used on the ship, the reason of the crack is analyzed from the aspects of design, technology and use, and the reasons of the crack are finally determined. In this paper, the mechanism of welding stress and chlorine embrittlement are analyzed and the corresponding improvement strategies are developed.
Yield Behavior of Tube Hydroforming and it’s Effecti on Hollow Component Manufacturing
Authors: Li Hong Yang , Deng Hai Ping , Yu Song
Published: January 2021

In this paper, aiming at the mechanics of tube hydroforming, the plasticity method was adopted in analyzing the stress yield behavior of the process. The stress character and yield behavior during the different stage of tube hydroforming was given and discussed. And then, basing on the discussing result, the yield behavior calculating formula was given and derived. At the same time, combining with the formula, figure of yield behavior was given. Base on the yield behavior character the process analysis was discussed in the end.
Regulation of Immune Responses by Nonhematopoietic Cells in Asthma
Authors: Royer Derek J , Cook Donald N
Published: January 2021

Nonhematopoietic cells are emerging as important contributors to many inflammatory diseases, including allergic asthma. Recent advances have led to a deeper understanding of how these cells interact with traditional immune cells, thereby modulating their activities in both homeostasis and disease. In addition to their well-established roles in gas exchange and barrier function, lung epithelial cells express an armament of innate sensors that can be triggered by various inhaled environmental agents, leading to the production of proinflammatory molecules. Advances in cell lineage tracing and single-cell RNA sequencing have expanded our knowledge of rare, but immunologically important nonhematopoietic cell populations. In parallel with these advances, novel reverse genetic approaches are revealing how individual genes in different lung-resident nonhematopoietic cell populations contribute to the initiation and maintenance of asthma. This knowledge is already revealing new pathways that can be selectively targeted to treat distinct forms of asthma.
Exploring the utility of neuro-monitoring in neurosurgery
Authors: Goonasekera Chulananda , Jones Holly , Lawrence Rebekah , Hanrahan John , Iyer Priyanka , Nijhawan Aditi
Published: January 2021

Background:

The purpose of intraoperative neuro-monitoring (IONM) is to minimize injury to eloquent neural structures and optimize tumor resection.

Method:

We explored the utility of IONM using a qualitative approach in a single center. Eight experienced users of its use in spinal and cranial surgery in adults and children were the informants. Using a constant comparative method, the findings were collated by thematic analysis.

Results:

The user perspective is that of caution to minimize adverse effects whilst empowering the need for formal training to enhance its efficacy. The process of IONM needs standardization as practices vary amongst users. Most users expressed limited trust on its current capabilities but hoped for its advancement to achieve higher sensitivity and specificity. None were however prepared to abandon its use.

Conclusion:

IONM needs optimization. Its utility depends on user vigilance, multi-disciplinary validation, and individual expertise. This study draws out key issues from the user perspective that need to be addressed in order to enhance the utility of IONM.
Association between olfactory function and quality of life in patients with olfactory disorders: a multicenter study in over 760 participants
Authors: Zou L-q. , Hummel T. , Otte M.S. , Bitter T. , Besser G. , Mueller C.A. , Welge-Lüssen A. , Bulut O.C. , Göktas Ö. , Negoias S. , Li S-b. , Haehner A.
Published: January 2021

BACKGROUND: This cross-sectional, multi-centric study aimed to investigate the differences in quality of life among patients with olfactory dysfunction (OD) of different origin, and to identify factors associated with olfactory-related quality of life (QOL). METHODS: Seven hundred sixty-three adults were recruited from 8 Smell & Taste clinics in Germany, Switzerland, and Austria. Olfactory-related QOL was assessed by the Questionnaire of Olfactory Disorders (QOD). Olfactory function was assessed with the “Sniffin’ Sticks” test; self-assessment was performed with visual analog scales. RESULTS: Patients with post-infectious and post-traumatic OD showed poorer olfactory-related QOL than patients with sinonasal and idiopathic OD. The olfactory-related QOL was positively associated with the Sniffin’ Sticks test score, self-assessed olfactory function, disease duration, and age, with younger olfactory dysfunction patients showing lower QOL. Female patients presented with poorer olfactory-related QOL. In addition, the results showed that self-assessment of olfactory function explained more of the variance in olfactory-related QOL than olfactory function evaluated by the Sniffin’ Sticks test. CONCLUSIONS: In addition to the psychophysical testing results, several factors such as disease cause, disease duration, sex, or self- assessed olfactory dysfunction should be taken into account when assessing the individual severity of the smell loss.
PELATIHAN PENINGKATAN KOMPETENSI PRA UJI KOMPETENSI KEJURUAN (UKK) JURUSAN TEKNIK OTOMOTIF KEPADA SISWA SMK RIGOMASI BONTANG
Authors: Ahmad Yani  , Yano Hurung Anoi  , Wildan Hamdani
Published: January 2021

Pengabdian Masyarakat merupakan salah satu dari Tridharma Perguruan Tinggi yang wajib dilakukan oleh dosen. Uji Kompetensi Keahlian (UKK) adalah bagian dari intervensi Pemerintah dalam menjamin mutu pendidikan pada satuan pendidikan Sekolah Menengah Kejuruan. Pelaksanaan UKK bertujuan untuk mengukur pencapaian kompetensi siswa pada level tertentu sesuai kompetensi Keahlian yang ditempuh selama masa pembelajaran di SMK. Tujuan kegiatan pengabdian masyarakat ini adalah untuk mendukung persiapan siswa SMK Rigomasi pada Ujian Kompetensi Keahlian teknik otomotif yang setiap tahun diadakan dan meningkatkan pencapaian kompetensi siswa SMK Rigomasi. Berdasarkan hasil kegiatan dan pembahasan bahwa terdapat peningkatan pengetahuan dan keahlian tune up dan perbaikan engine management system yang cukup signifikan setelah melewati pelatihan yang ditandai dengan hasil perbandingan antara nilai pretest dengan post test. Dari hasil pengolahan data dapat disimpulkan bahwa nilai ujian post test maksimum sebesar 8,97
PEMBERDAYAAN PEREMPUAN DAN DIVERSIFIKASI OLAHAN IKAN BANDENG DI DESA SAWAH LUHUR
Authors: Yuliah  , Raden Irna Afriani  , Ina Khodijah
Published: January 2021

Diversifikasi produk ikan bandeng merupakan kegiatan menciptakan olahan baru dari Ikan Bandeng agar dapat memberikan nilai tambah. Metode yang digunakan adalah metode penyuluhan. Adanya penyuluhan diharapkan dapat mentransfer pengetahuan dan keterampilan kepada ibu-ibu rumah tangga sehingga mereka lebih berdaya atau memiliki keinginan dan kemauan yang kuat untuk memulai usaha lain sehingga dapat memberikan tambahan pendapatan untuk keluarga. Dengan PKM ini, Ibu-Ibu Rumah Tangga mengetahui adanya olahan baru dari Ikan Bandeng yaitu Bakso Bandeng yang disukai oleh semua kalangan dan juga dapat dipasarkan secara online dengan menggunakan kemasan (standing pouch) dan labeling yang menarik
PENANGGULANGAN BAHAYA LONGSOR PERIODIK DI DUSUN WAILAWA DESA TAWIRI
Authors: Kastanya Felix , Ferat Puturuhu
Published: January 2021

Posisi Dusun Wailawa Desa Tawiri dikelilingi oleh lereng dan daerah aliran sungai yang memberikan potensi bencana setiap tahunnya terutama pada musim penghujan. Bencana berupa tanah longsor senantiasa mengancam warga yang memanfaatkan lereng gunung sebagai upaya pembangunan rumah tinggal dengan cara momotong kaki lereng. Hasil potongan terhadap kaki lereng tersebut membuat dinding lereng menjadi terbuka dan mudah longsor akibat tererosi oleh air hujan yang mengalir melalui bagian atas lereng dan bergerak menuruni badan lereng, sehingga terjadi longsor secara parsial yang dapat berubah menjadi massif. Lereng yang dipotong juga dimanfaatkan oleh perangkat desa untuk meletakan papan pengumuman yang tidak permanen sehingga mudah roboh atau rusak karena pengaruh hujan maupun tiupan angin. Untuk mengatasi masalah tersebut dilaksankan pengabdian kepada masyarakat dengan membuat perkerasan pada bagian atas lereng yang disertai dengan penanaman stek pohon gamal  pada bagian atas lereng yang dicoor dan penanaman stek pohon gamal pada bagian lereng diatasnya. Perkerasan diterapkan juga pada kaki lereng, dan pada badan lereng dibuat dinding penahan tanah yang berfungsi untuk menahan tanah sekaligus berfungsi sebagai papan pengumuman. Untuk mengamankan papa pengumuman tersebut dibuat rumah tidak permanen yang berfungsi juga sebagai pos jaga bagi masyarakat. Dalam rangka meningkatkan pengetahuan masyarakat tentang bahaya longsor dan cara penanganannya, maka Sssialisasi dilakukan pada dua lokasi berbeda dengan jumlah peserta dibatasi lima belas peserta. Hasil pengabdian menunjukan Penanaman pohon gamal berupa stek pada daerah lereng yang memliki potensi longsor bervariasi dengan ketinggian 25cm sampai dengan 200cm, Perkerasan pada bagian atas lereng yang memiliki potensi longsor terbentuk dengan lebar 30cm – 50cm dan panjang 15 sampai 20m Dinding pengaman lereng yang memiliki fungsi ganda sesuai permintaan mitra terbentuk dengan ketinggian bervariasi 40 cm sampai 150cm. Terlaksananya sosialisasi tentang bahaya longsor dan penanganannya pada 2 lokasi yang berbeda dengan kenaikan tingkat pemahaman sebesar 32.5%
EDUKASI KESEHATAN REPRODUKSI SECARA DARING PADA SISWI SD DALAM RANGKA MENGHADAPAI MANARCHE
Authors: Hasria Alang  , Eka Apriyanti  , Hartini
Published: January 2021

Masa remaja merupakan masa transisi, dan cenderung ingin mencoba-coba hal baru sehingga acapkali berdampak negatif. Pemahaman dan informasi kesehatan reproduksi sangat diperlukan pada fase ini dan edukasi dapat dilakukan melalui pemberian penyuluhan atau yang mencakup materi tentang perubahan-perubahan yang terjadi ketika memasuki masa remaja. Tujuan kegiatan pengabdian masyarakat ini dapat memberikan pengetahuan kepada para peserta tentang kesehatan reproduksi. Kegiatan ini dilakukan secara daring, diawal dari pre test dengan menjawab pertanyaan melalui google form, selanjutnya dilanjutkan dengan pemaparan materi dan sesi Tanya jawab, dan tahap terakhir dilakukan dengan menjawab post test melalui google form. Berdasarkan hasil evaluasi yang dilakukan dalam kegiatan ini, maka dapat disimpulkan bahwa kegiatan ini sangat bermanfaat karena para peserta dapat memperoleh pengetahuan tentang kesehatan reproduksi pada remaja dalam menyongsong manarce.
PEMBINAAN DAN PENERAPAN STRATEGI PEMASARAN MELALUI MEDIA SOSIAL PADA HOME INDUSTRI MASYARAKAT TANJUNG GUNDAP
Authors: Nora Pitri Nainggolan  , Intan Utna  Sari
Published: January 2021

Ditengah-tengah kemajuan teknologi pada jaman sekarang ini masih terdapat masyarakat yang berada jauh dari kemajuan teknologi. Masyarakat ini merupakan suku asli yang berada di pesisir laut dengan menggantungkan hidupnya dari laut yaitu dengan menjadi nelayan. Salah satu suku laut yang masih tersisa di pesisir kota Batam adalah suku laut Tanjung Gundap. Oleh karena itu pengabdian pada kali ini dilakukan di Tanjung Gundap. Tanjung Gundap terletak di Kepulauan Riau, Kabupaten Kota Batam, Kecamatan Sagulung, Kelurahan Tembesi. Pengabdian ini diberikan kepada masyarakat Tanjung Gundap yang berada di RW 01/ RT 02. Berdasarkan survey yang dilakukan oleh Tim Pengabdi pada hari Minggu tanggal 29 Juli 2018 dan hari Selasa tanggal 31 Juli 2018
SOSIALISASI PENTINGNYA LEGALITAS USAHA DAN PENJUALAN ONLINE UNTUK PENGEMBANGAN USAHA MIKRO KECIL DAN MENENGAH
Authors: Widayanto Mutinda Teguh , Pujiastuti Agustina , Yatiningrum Agung , Tumini  , Rahma Dhany Umi
Published: January 2021

Peranan Usaha Mikro Kecil dan Menengah dalam memutar roda perekonomian Indonesia sudah tidak diragukan lagi, namun masih banyak kendala sehingga pengembangan UMKM masih belum seperti yang diharapkan. Salah satu faktor adalah karena belum adanya lagalitas usaha bagi sebagian besar UMKM yang ada di daerah. Pada masa teknologi informasi saat ini sebenarnya UMKM mempunyai potensi untuk dapat memperluas pasar dengan melakukan penjualan secara online, namun keterbatasan pengetahuan tentang penjualan online menyebabkan potensi itu tidak tergarap dengan baik. Kegiatan pengabdian kepada Masyarakat ini berusaha memberi pemahaman tentang manfaat dari lagalitas usaha dan bagaimana memanfaatkan medio komunikasi untuk melakukan penjualan secara online. Diharakan dengan memiliki legalitas usaha, para pelakuk UMKM dapat mengakses pembinaan dari Instansi permerintah terkait dan daat mengakses kredit dari perbankan. Dengan dipahaminya penjualan secara online diharapkan omset UMKM dapat meningkat secara signifikan
MODEL KURVA LORENZ PADA PENGELUARAN RUMAH TANGGA PERTANIAN DI PROVINSI PAPUA
Authors: Muhammad Fajar
Published: January 2021

Berdasarkan penelitian sebelummya menunjukkan bahwa distribusi pengeluaran rumah tangga pertanian Provinsi Papua adalah distribusi Generalized Beta Type 2 (GB2), namun menurut penulis jika model kurva Lorenz diturunkan dari distribusi Generalized Beta Type 2 memiliki bentuk yang rumit dan tidak sederhana serta implisit. Oleh karena itu, tujuan paper ini adalah untuk memodelkan kurva Lorenz pengeluaran rumah tangga pertanian Provinsi Papua dengan menggunakan model kurva Lorenz versi Rohde, yang merupakan model dengan satu parameter. Terdapat tiga rumusan untuk mengestimasi parameter dalam pemodelan kurva Lorenz, yaitu rata-rata aritmatik, median dan least square. Dalam paper ini, penulis menambahkan rumusan rata-rata harmonis dan trimean untuk mendapatkan nilai estimasi parameter pada kurva Lorenz. Hasil penelitian ini menyimpulkan bahwa model Lorenz versi Rohde dapat diterapkan dan estimasi pada model tersebut menghasilkan bahwa  yang diturunkan dari median memiliki mean squared error minimum, sehingga gini ratio yang dihasilkan memiliki akurasi dan presisi yang tinggi serta sesuai dengan sebaran data
School Mathematics Teachers Are Super Heroes
Authors: White Allan Leslie
Published: January 2021

Hollywood has produced many super heroes such as Superman, Batman and Wonder Woman. Recently it released a film titled 'Waiting for Superman' which shows a young boy imprisoned within a system and classroom that does not stimulate his learning while actively destroying his motivation and engagement with the educational process. The film implied the task of fixing the problem was so great that only Superman could fix it. So what are the criteria for a super hero? Firstly it is someone with extraordinary powers beyond those of most mortals. In this paper I will propose that most mathematics teachers meet the criteria and are super heroes who combat the spread of darkness and ignorance of mathematics. I will present evidence to prove that most mild mannered mathematics teachers are really super heroes in disguise. Mathematics teachers have super powers. They have the power to understand and value mathematics, something that is beyond the vast majority of the population. What is the basis of their power? It is their mathematics pedagogical and content knowledge. Not only can they do mathematics, but they can construct a learning environment where their students develop conceptual knowledge and deep learning. They use the latest developments in technology to assist their battle with the forces of darkness and innumeracy. While more mathematics has been invented in the last 50 years than in the preceding years of human development, teachers are expected to keep abreast of this new knowledge. Hollywood may be waiting for Superman, but the real super heroes are every day engaged in the battle to reveal to their students the power and the beauty of mathematics that can transform their lives.