122 research outputs found

    Solid waste management in urban areas of Vientiane Capital City using GIS

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    The purpose of this project was to research solid waste management in urban areas of Vientiane Capital City; to survey about waste collection, composition of waste and recycling for the economy; to establish waste data for monitoring and management using GIS; to improve aesthetics of the city and increase public awareness. The map created by geographic information system (GIS) was proposed to generate GIS database of solid waste with data entry of the details - spatial and attributes - bins, routes, quantity of dry waste etc. The analysis techniques were composed of database generation and map visualization. Map overlay techniques were used to study the general sources of solid waste and waste distribution boundaries. The waste collected by the Vientiane Cleaning Unit under the Vientiane Urban Development and Administration Authority, and waste pickers is thought to be different from the landfill waste. There is a lack of a data sharing and also a lack of database generation using geographic information system. Therefore, good methods of waste management and appropriate technology are needed to improve this trend

    Pengaruh Kemandirian dan Gaya Belajar Terhadap Hasil Belajar Dengan Variabel Mediasi Motivasi Belajar

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    This study aims to determine the role of the learning motivation variable as a mediation between the influence of independent learning and the influence of learning styles on learning outcomes in Universitas Negeri Surabaya Accounting Education students. This type of research used in this research is a type of quantitative research. The data collection techniques used in this study were questionnaires and documentation. Data processing in this study using SEM analysis techniques. The conclusions obtained based on this research are learning independence can affect learning motivation directly, learning style can affect learning motivation directly, learning outcomes are directly influenced by learning motivation, learning motivation cannot be a variable that mediates learning independence on learning outcomes, learning motivation cannot mediate learning styles on learning outcomes

    Promoting Inequality in Higher Education: An Analysis of the Effectiveness of State-Sponsored Merit-Based Financial Aid Programs on Low-Income and Minority Students

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    114 pages. A thesis presented to the Department of Finance and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2016.Education policy experts and educational institutions alike are cognizant of the reality that low-income students are less likely to attend college than students from middle and upper income families. For those who do make it to college, socioeconomically disadvantaged students are again less likely to graduate from college with a degree than their higher income peers. In order to address the issue of college accessibility as well as the high burden of college tuition that has been placed on students and their families, many states have implemented merit-based financial aid programs. These programs are designed to expand access to higher education for students who would not otherwise be able to afford it. This thesis will examine three of these financial aid programs in depth: the Georgia HOPE Scholarship and Grant Program, the New Mexico Lottery Scholarship Program and the Indiana Twenty-first Century Scholarship Program, and whether they are effective at expanding college accessibility to low-income and minority youths. This thesis will also analyze specific characteristics of these programs that potentially further exacerbate the divide between socioeconomically disadvantaged students and their higher income counterparts. Embedded within the analysis are examples of programs that have, to some degree, been successful at getting low-income students to enroll in college, which provide insight into how merit-based financial aid programs could be designed to meet the goal of affording low-income students a fair chance at college

    Spinal Cord Compression Secondary to Extramedullary Hematopoiesis: Case Report and Review of the Literature

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    Extramedullary hematopoiesis (EMH) is a rare cause of spinal cord compression (SCC). EMH represents the growth of blood cells outside of the bone marrow and occurs in a variety of hematologic illnesses, including various types of anemia and myeloproliferative disorders. Although EMH usually occurs in the liver, spleen, and lymph nodes, it may also occur within the spinal canal. When this occurs, the mass effect can compress the spinal cord, potentially leading to the development of neurological deficits. We present a case of SCC secondary to EMH. This report illustrates the importance of considering EMH in the differential diagnosis of SCC, even in the absence of signs of its most common etiologies

    Strontium-and cobalt-doped multicomponent mesoporous bioactive glasses (MBGS) for potential use in bone tissue engineering applications

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    Mesoporous bioactive glasses (MBGs) offer suitable platforms for drug/ion delivery in tissue engineering strategies. The main goal of this study was to prepare strontium (Sr)-and cobalt (Co)-doped MBGs; strontium is currently used in the treatment of osteoporosis, and cobalt is known to exhibit pro-angiogenic effects. Sr-and Co-doped mesoporous glasses were synthesized for the first time in a multicomponent silicate system via the sol-gel method by using P123 as a structure-directing agent. The glassy state of the Sr-and Co-doped materials was confirmed by XRD before immersion in SBF, while an apatite-like layer was detected onto the surface of samples post-immersion. The textural characteristics of MBGs were confirmed by nitrogen adsorption/desorption measurements. In vitro experiments including MTT assay, Alizarin red staining, and cell attachment and migration showed the cytocompatibility of all the samples as well as their positive effects on osteoblast-like cell line MG-63. Early experiments with human umbilical vein endothelial cells also suggested the potential of these MBGs in the context of angiogenesis. In conclusion, the prepared materials were bioactive, showed the ability to improve osteoblast cell function in vitro and could be considered as valuable delivery vehicles for therapeutics, like Co2+ and Sr2+ ions

    Molecular Sequence of Events and Signaling Pathways in Cerebral Metastases

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    Brain metastases are the leading cause of morbidity and mortality among cancer patients, and are reported to occur in about 40% of cancer patients with metastatic disease in the United States of America. Primary tumor cells appear to detach from the parent tumor site, migrate, survive and pass through the blood brain barrier in order to establish cerebral metastases. This complex process involves distinct molecular and genetic mechanisms that mediate metastasis from these primary organs to the brain. Furthermore, an interaction between the invading cells and cerebral milieu is shown to promote this process as well. Here, we review the mechanisms by which primary cancer cells metastasize to the brain via a mechanism called epithelial-to-mesenchymal transition, as well as the involvement of certain microRNA and genetic aberrations implicated in cerebral metastases from the lung, breast, skin, kidney and colon. While the mechanisms governing the development of brain metastases remain a major hindrance in treatment, understanding and identification of the aforementioned molecular pathways may allow for improved management and discovery of novel therapeutic targets

    Strontium-and cobalt-doped multicomponent mesoporous bioactive glasses (MBGS) for potential use in bone tissue engineering applications

    Get PDF
    Mesoporous bioactive glasses (MBGs) offer suitable platforms for drug/ion delivery in tissue engineering strategies. The main goal of this study was to prepare strontium (Sr)-and cobalt (Co)-doped MBGs; strontium is currently used in the treatment of osteoporosis, and cobalt is known to exhibit pro-angiogenic effects. Sr-and Co-doped mesoporous glasses were synthesized for the first time in a multicomponent silicate system via the sol-gel method by using P123 as a structure-directing agent. The glassy state of the Sr-and Co-doped materials was confirmed by XRD before immersion in SBF, while an apatite-like layer was detected onto the surface of samples post-immersion. The textural characteristics of MBGs were confirmed by nitrogen adsorption/desorption measurements. In vitro experiments including MTT assay, Alizarin red staining, and cell attachment and migration showed the cytocompatibility of all the samples as well as their positive effects on osteoblast-like cell line MG-63. Early experiments with human umbilical vein endothelial cells also suggested the potential of these MBGs in the context of angiogenesis. In conclusion, the prepared materials were bioactive, showed the ability to improve osteoblast cell function in vitro and could be considered as valuable delivery vehicles for therapeutics, like Co2+ and Sr2+ ions. © 2020 by the authors

    The choice of insider or outsider top executives in acquired companies

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    There is considerable debate amongst academics and practitioners over whether top executives of acquired or merged companies should stay or go, post-deal, as studies exploring the link with organisational performance show mixed results. This may in part be due to such studies failing to recognise that there are a number of distinct post-acquisition strategies which may require the deployment of different types of top executive. This paper addresses this limitation by bringing together the longstanding Insider/Outsider debate with a post-acquisition integration framework, in order to investigate whether there is a link between top management type and post-acquisition integration strategy. Using a dual methodology of survey and cases drawing on UK M&A data, clear associations are found between top executive type and particular post-acquisition styles. Underlying these patterns, the value-creating/value-capturing distinction of the Resource-Based View appears to have a greater influence over top executive deployment than do issues of Organisational Fit. This suggests strategic intentions have ascendancy over organisational constraints in the selection of top executives for managing post-acquisition integration

    Composition of the Top Management Team and Firm International Diversification

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    This study investigates the impact of various top management team characteristics on firm international diversification. Relying on data from 126 firms in the electronics industry, we find that certain top management team characteristics are related to international expansion. Specifically, results indicate that lower average age, higher average tenure, higher average elite education, higher average international experience, and higher tenure heterogeneity are associated with firm international diversification. The study reinforces the importance of top management team composition in internationalization decisions and suggests further research in this context.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline
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