bluuebunny/crossref_metadata_2025_split huggingface dataset:
Empirical evidence against U.S. H1-B visa restrictions, the case of employment in the manufacturing industry
Authors: Gjoci Erjon 
Published: November 2021

Abstract
This empirical research paper provides ample evidence for policy makers to readdress the immigration policy--especially H1-B visa cap restrictions. The paper is focused on employment shifts and human capital achievement for two groups: the U.S. born and foreign-born working within the United States manufacturing industry. The manufacturing industry is the largest industry employer in the country, and it is in the brink of being at a disadvantage in the global stage due to labor shortage as the workforce ages. The paper uses data for three-year periods--2000, 2010, and 2019--from U.S. Census, The American Community Survey (ACS), Public Use Microdata Sample (PUMS) files, thus providing an overview in labor trends and the human capital needed for the industry to be competitive. The paper builds from the Mincer (1974) earnings function to determine hourly wages for the two groups and then uses the Oaxaca-Blinder (1973) method to measure potential bias between the U.S. born and foreign-born employees in the manufacturing industry. The results in this paper align with other recent research findings (Gest et al., 2021; Eckstein & Peri, 2018) that show immigration as a tool to economic competitiveness. The data trends and findings in this paper synchronize with Borjas and Edo (2021) insights indicating that the native-born may respond to supply shocks of immigration by moving to other labor markets that are not directly affected by immigration.
Grain trade between China and the United States shapes the spatial genetic pattern of common ragweed populations in East China cities
Authors: lu Siran , Luo Xiangyu , Wang Hongfang , Gentili Rodolfo , Citterio Sandra , Yang Jingyi , Jin Jing , Li Jianguang , Yang Jun 
Published: November 2021

Abstract
Common ragweed (Ambrosia artemisiifolia L.) is an invasive alien species (IAS) that can cause severe allergies among urban residents. Understanding its invasion pathways is critical for designing effective control programs. However, studies on the invasion of common ragweed normally skip urban areas. Results from a few studies based on analyzing occurrence records contain high uncertainties. We attempted to address this knowledge gap through a case study in East China cities by combining the population genetic method with the occurrence records. We first collected leaf samples of 37 common ragweed populations from 15 cities. We then quantified the spatial genetic pattern of common ragweed populations by analyzing genomic and chloroplast DNA extracted from the leaf samples. Combined with the analysis of occurrence data and trade data, we discovered that multiple introductions have impacted the spatial genetic pattern of common ragweed populations in East China Cities. We inferred that the modern-day grain trade between the United States and China could be the primary invasion source while the bridgehead introduction passage through Japan played a minor role. Among the studied cities, Nanjing and Shenyang dispersed more gene flows than other cities. The two cities' central roles in transportation and grain importation might explain the observed pattern. Based on our findings, we suggest that invasive species control programs should consider the potential role of cities as landing points and dispersal hubs of common ragweed in invaded countries.
Genome-wide SSR Markers in Bottle Gourd: Development, Characterization, Utilization in Assessment of Genetic Diversity of National Genebank of India and Synteny With Other Related Cucurbits
Authors: Bonthala Bhawna , Verma Manjusha , Abdin M Z , Arya Lalit , Pandey Chithra D , Dixit Ved , Yadav Priya 
Published: November 2021

Abstract
Lagenaria siceraria (Molina) Standley is an important cultivated crop with its immense importance in pharmaceutical industry and as vegetable. Its seed, root, stem, leaves, flower and fruit are used as an ointment for ailment of various diseases throughout Asia. Despite its worldwide importance,informative co-dominant microsatellite markers in the bottle gourd crop are very restricted, impeding geneticimprovement, cultivar identification and phylogenetic studies. Next generation sequencing has revolutionizedthe approaches for discovery, assessment and validation of molecular markers. We conducted a genome wideanalysis, for developing SSR markers by utilizing restriction site-associated DNA sequencing (RAD-Seq) data.By performing in silico mining of microsatellite repeat-motifs, we developed 45,066 perfect SSR markers. Ofwhich 203 markers were successfully validated and 101 (49.75%) polymorphic primer pairs were utilized for anin depth genetic diversity and population structure analysis of 96 accessions from the National Genebank ofIndia. Tetranucleotide repeats (∼34.3%) were the most prevalent followed by trinucleotide repeats (∼30.73%),further 21.03%, 9.6% and 4.3% of di-, penta- and hexa- nucleotide repeats in the bottle gourd genome. Syntenyof SSR markers on 11 bottle gourd linkage groups was correlated with the 7 chromosomes of cucumber(93.2%), 12 chromosomes of melon (87.4%) and 11 watermelon (90.8%). The generated SSR markers providea valuable tool for germplasm characterization, genetic linkage map construction, studying synteny, genediscovery and for breeding in bottle gourd and other cucurbits species.
Web Accessibility Interventions for Citizens Living with Cognitive Impairment: A Rapid Evidence Assessment
Authors: Flynn Paul , Gartland Sara , Cullen Joe , Carneiro Maria Ana , Fialho Jose de Sousa , Holloway Greg , Cullen Clare , Hamilton Emma , Harris Amy 
Published: November 2021

Abstract
BackgroundThere is a clear and pressing need to understand the barriers to technology user experience, particularly in relation to people with cognitive disabilities. The COVID-19 pandemic and subsequent expansion of digital technologies associated with education, wellness and employment only makes the need to understand how people with cognitive disabilities interact with such technologies, within the naturalistic context of their lifeworld, increasingly urgent. Therefore a necessary first step is to develop a baseline understanding of the current state of web accessibility for people with cognitive disabilities. Thus, the purpose of this review is to conduct baseline research to understand the factors and processes that inhibit access to online content and services for people with cognitive impairments.MethodsThis systematic, rapid evidence assessment, review will employ a search strategy using defined terms within agreed search strings in the following databases: Web of Science, SCOPUS, EBSCOhost, ERIC and ProQuest. Internet searching through Google Scholar will be carried out as well as forward and backward tracking of citations from studies that are included in the review. All results, screening process results will be documented in tabular form and communicated in a PRISMA flow diagram. In addition, the research team consider it necessary to carry out a grey literature search due to the nature of the work being investigated. The expertise within the research team indicated that many programmes that support people with cognitive impairments do not formally report their work through academic dissemination pathways. Consequently it is intended that a grey literature search will be carried out to supplement that findings of study. In contrast to the focus on studies published in English for peer review returns, the grey literature search will actively seek out returns across all languages of the European Union.DiscussionThis rapid review protocol will focus on citizens ages 9 and up who live with cognitive impairment and establish a baseline for best practice in supporting web accessibility for people with cognitive impairments. It will achieve this by providing a time limited state-of-the-art evidence report, specific to the challenges people with cognitive impairment, that will help those involved in policy development, policy response initiatives and localised activity. It is intended that, depending on the outcome of the review process, additional opportunities for innovation and/or research may be communicated to relevant stakeholders and policy makers.Systematic Review RegistrationThis protocol has been submitted to the International Prospective Register for Systematic Reviews - PROSPERO, and is currently under review. Reference No. 269245.
CoViD-19 als Katalysator für die digitale Professionalisierung angehender Lehrpersonen?
Authors: Schwabl Franziska , Vogelsang Christoph 
Published: November 2021

Die CoViD-19-Pandemie ab Frühjahr 2020 und die pandemiebedingten Kontaktbeschränkungen hatten erhebliche Auswirkungen auf die studienbegleitenden Praxisphasen im Lehramtsstudium. Studierende, die ihr Praxissemester im Sommersemester 2020 absolvierten, waren in der Folge erheblich von Einschränkungen sowohl während der universitären Begleitveranstaltungen als auch in den Praxisschulen betroffen. Durch die überwiegende Umstellung von Präsenzformaten zu digitalem Lehren und Lernen auf Distanz ist die Annahme naheliegend, dass Studierende vermehrt die Möglichkeit hatten, Erfahrungen mit digitalen Lernformaten zu machen. Anhand einer Sekundäranalyse der Befragung einer Kohorte von Praxissemesterstudierenden der Universität Paderborn (N=362) kann allerdings gezeigt werden, dass der erwartete Möglichkeitsraum für eine digitale Professionalisierung keineswegs ausgeschöpft bzw. überhaupt genutzt wurde. Vielmehr zeigte sich, dass angehende Lehrpersonen digitale Medien vor allem dann in den eigenen Unterricht einbetten, wenn diese in der mentoriellen Begleitung thematisiert wurde oder während Hospitationen beobachtet werden konnte. Zudem deuten die Analysen an, dass ungünstige Professionalisierungsbedingungen an den Praxisschulen nur bedingt durch die universitären Anteile der Praxisphasen aufgefangen werden konnten. Für die Gestaltung der universitären Lehrpersonenausbildung ergibt sich daher u. a. die Notwendigkeit einer intensiveren Kooperation zwischen den verschiedenen Akteuren der drei Phasen der Lehrpersonenbildung.
Revealing changes in the technical parameters of the teat cup liners of milking machines during testing and production conditions
Authors: Paliy Andriy , Aliiev Elchyn , Paliy Anatoliy , Ishchenko Katerina , Lukyanov Igor , Dobrovolsky Volodymyr , Yurchenko Oksana , Chekan Oleksandr , Dedilova Tetiana , Musiienko Yurii 
Published: November 2021

To implement effective cow milking, it is necessary to take into account the peculiarities of the milk flow process, the milking machine's adaptability to perform the given technological functions. The aim of research is to establish changes in the design and technological parameters and physical and mechanical properties of teat cup liner of milking machines during its testing and in production conditions. The results obtained will make it possible to make a rational choice of rubber, ensure an efficient milking process during its service life. It is found that the tensile strength of silicone teat cup liner at the beginning of operation was 1.6 times higher than that of a rubber compound, and after 6 months. operation – 1.7 times. With respect to the relative elongation, this difference was 1.4 times, and after operating time – 1.3 times. Studies have proven that rubber during operation changes its physical and mechanical properties: the length of the active part increased by 3.1 mm; wall thickness – 0.2 mm. It is found that the most intensively elastic properties of teat cup liner changed during the first 10–20 days. After 10 days, the closing vacuum increased by 16.6 % compared to the initial one, and after 20 days by 23.3 %, which amounted to 8.57 and 9.06 kPa, respectively. Up to 420 hours of operation, the clamping vacuum reached 11.3 kPa, which is 5.8 % lower than the requirements for toughening teat cup liner for rejection. In general, over the period of experiments, the average value of the vacuum of closing the opposite walls of teat cup liner increased from 7.35 to 12.43 kPa, which is 3.6 % higher than the norm (12 kPa). As a result of experimental studies, the regularity of the rubber tension force depending on the operating time in the form of a fourth degree polynomial is obtained. It is found that after 150 hours of operation, the tensile force of teat cup liner decreased by 21 %
The investigation of natural-rubber for improving self-powered heat detector based on thermoelectric generators
Authors: Prathepha Krittanon , Sa-ngiamvibool Worawat 
Published: November 2021

Fire hazard has destroyed humanity creations. Fire detectors have been developed by using different techniques. Thermoelectric generator (TEG) is a part of energy harvesting which is able to convert heat into electricity because of temperature difference between hot and cold side of thermoelectric device (TE). Different materials are used for thermoelectric generators which depend on the characteristics of the heat source, heat sink and the design of the thermoelectric generator. Many thermoelectric generator materials are currently undergoing research. This paper presented an investigation of seeking an alternative way of detecting fire hazard by developing architecture prototype of a fire detection technique using natural rubber. The thermoelectric prototype used self-powered device which improved the temperature difference gap and stabilized the cold side of TE alongside natural rubber as the cooling material. The technique is relatively simple system realization based on three viable components, i.e. a heat sensor, a low-power RF-transmitter and a RF-receiver. The heat sensor is designed and fabricated by thermoelectric and heat sink with natural rubber (NR) coating. The NR coating is heat absorption reduction. Therefore, the temperature difference is wildly resulting in the higher TE output voltage. The voltage is also supplied to the low-power RF transmitter module. In case of fire hazard, the temperature increases from 26 to 100 °C , the prototype can operate successfully. This technique will solve potentially the power supply issue in fluctuated situations. The rubber coating from rubber trees in Thailand would be a value chain added for bio-economy, supporting a sustainable development goal of the country
Experimental partitioning of fluorine and barium in lamproites
Authors: Ezad Isra S. , Foley Stephen F. 
Published: November 2021

Abstract
The dynamic properties and melting behavior of the Earth’s mantle are strongly influenced by the presence of volatile species, including water, carbon dioxide, and halogens. The role that halogens play in the mantle has not yet been fully quantified: their presence in only small quantities has dramatic effects on the stability of mantle minerals, melting temperatures, and in generating halogen-rich melts such as lamproites. Lamproites are volumetrically small volcanic deposits but are found on every continent on the planet: they are thought to be melts generated from volatile-rich mantle sources rich in fluorine and water. To clarify the mantle sources of lamproites, we present experimentally determined mineral/melt partition coefficients for fluorine and barium between phlogopite and lamproite melts. Both fluorine and barium are compatible in phlogopite [DF(Phl/Melt)0.96 ± 0.02 – 3.44 ± 0.33, DBa(Phl/Melt)0.52 ± 0.05 – 3.68 ± 0.43] at a range of pressures (5–30 kbar), temperatures (1000–1200 °C), and fluid compositions (C-O-H mixtures). Using our partition coefficients, we model the melt compositions produced by potential lamproite sources, including phlogopite garnet lherzolite, phlogopite harzburgite, and hydrous pyroxenite. The results demonstrate that hydrous pyroxenites and phlogopite garnet lherzolite can produce melts with F and Ba contents similar to lamproites, but only hydrous pyroxenites fully reproduce other geochemical characteristics of lamproites including high K2O, low CaO contents, and high F/H2O ratios.
Factorial confirmatory analysis to measure the perception of labor inclusion of people with disabilities
Authors: Pérez-Hernández Saúl , Magaña-Medina Deneb Elí , Guzmán Fernández Candelaria 
Published: November 2021

Introduction: The objective of this scientific approach was to validate through confirmatory factor analysis a measurement model to determine the perceived importance of the inclusion of persons with disabilities in the labor market, in employees who work or interact during the course of their duties with disabled employees.
Method: The study had a quantitative approach with a non-experimental design, was carried out in 4 organizations: a Higher Education Institution, two private sector agencies and a public administration institution, in the Southeast of Mexico; where a total of 120 employees who work or interact during the course of their duties with partners with disabilities participated, the participants were also sought to belong to different departments of those organizations. An exploratory and confirmatory factor analysis was performed to determine the psychometric properties of the instrument.
Results: The proposed model ratified by means of confirmatory factor analysis the values of the main fit indicators (X 2 =40.15, p=.216; CMIN/DF= 1.18; CFI=.97; GFI= .91, IFI=.97; RMSEA=.04; CI 90 [.00-.09]).
Discussion or conclusion: The results confirm the empirical sustainability of the proposed model to measure the perception on the occupational inclusion of people with disabilities" (POIPD) in organizations with at least one partner with disabilities, the data presented show evidence of a sustainable factor model.
Sustainability of water facilities under community based management in Zimbabwe
Authors: Kativhu Tendai , Madzivanyika Trevor T. , Nunu Wilfred N. , Macherera Margaret , Chinyama Annatoria 
Published: November 2021

Abstract
Community Based Management (CBM) has been envisaged as a panacea to sustainability challenges faced in the Water Sanitation and Hygiene (WASH) sector globally. In spite of this approach having success stories, studies have shown that failures are also being recorded. This study investigated the sustainability of rural water supply facilities under the CBM approach in Chipinge District of Zimbabwe. The specific objectives were to assess the technical, financial and institutional factors influencing sustainability. A cross sectional study design was used. Data was collected using Focus Group Discussions, Key Informant Interviews, household questionnaires and an observation checklist. Quantitative data was analysed using SPSS and Microsoft Excel while qualitative data was analysed using the thematic approach. Results showed that the technical factors which are influencing sustainability are age of the water facility, frequency of carrying out preventive maintenance and existence of external support. Regression analysis showed a positive linear correlation between age and breakdown frequency (R2 = 0.46) and the odds of obtaining a breakdown decreased as the frequency of preventive maintenance increased. User communities were contributing inadequate O&M funds resulting in long downtimes. Non-functionality of WPCs negatively influenced sustainability. The study recommends training of user communities on CBM and technical skills.
Evaluating the impact of free private well testing outreach on participants' private well stewardship in New Jersey
Authors: Seliga Alecia , Spayd Steven E. , Procopio Nicholas A. , Flanagan Sara V. , Gleason Jessie A. 
Published: November 2021

Abstract
Over 1 million people in New Jersey (NJ) are estimated to receive drinking water from private wells. The most commonly detected contaminants in NJ private well water are naturally occurring arsenic and gross alpha (8.3 and 10.9%, respectively). Between 2015 and 2018, three free and voluntary private well testing events tested a total of 571 at-risk wells and 226 (40%) were identified as having one or more contaminants exceeding drinking water standards. Participants were invited to complete a survey to evaluate household characteristics, participant experience, and private well stewardship behavior patterns. Of 529 delivered surveys, 211 (40%) participants completed surveys. Among respondents, 63% reported plans to test their private wells in the future. Among failed wells, 45% of households reported performing mitigative action in response to the event, either through the installation of water treatment system or switching to bottled water. The survey evaluation identified previous knowledge of well contamination risks and discussing test results with a third party as important factors for promoting self-reported stewardship behavior. The evaluation provides guidance for outreach organizers to develop effective testing events and further considers the private well owners' experience of the outreach events to identify information for ‘best practices’ and improvements of future programs.
An uncertainty-based smart market model for groundwater management
Authors: Sharghi Soroush , Kerachian Reza 
Published: November 2021

Abstract
This paper presents a new water market mechanism, which can be used for selecting the best trading policy by incorporating the uncertainties of total annual available water and wholesale price of agricultural products. In this mechanism, water users are asked to submit bid packages via a web-based platform. A bid package represents the real values that a user puts on different quantities of withdrawn groundwater considering its quality. Then, the most reliable water trading policy as well as the price of water are calculated by taking the market endogenous and exogenous uncertainties into account using the regret theory. The results show that by applying the proposed uncertainty-based smart groundwater market mechanisms to the Nough Plain in Iran, the average productivity of water users increases about 18% compared to the status quo condition. Furthermore, based on the outputs of the proposed market model, groundwater is finally distributed to agricultural users almost proportional to their farm's area.
“FORMULATION DEVELOPMENT AND SOLUBILITY ENHANCEMENT OF ROSUVASTATIN CALCIUM BY USING HYDROPHILIC POLYMERS AND SOLID DISPERSION METHOD”
Authors: KAUR LOVEPREET , KAUR TARANJIT , SINGH AMAR PAL , SINGH AJEET PAL 
Published: November 2021

Objective: Preparation of Rosuvastatin Calcium by Using Hydrophilic Polymers and Solid Dispersion Method, Rosuvastatin calcium is a Dyslipidaemic agent, which act as a selective competitive inhibitor of HMG CoA educates enzyme and is used in the treatment of hyperlipidemia.
Methods: In the present work, Solid Dispersion was prepared by kneading method to increase the solubility of Rosuvastatin Calcium.
Results: Solid dispersions were evaluated by determining percentage yield, drug content, solubility, Scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), DSC and in vitro dissolution profile. The prepared solid dispersion are formulated into capsule dosage form and characterized by various parameters i.e. weight variation, content uniformity, disintegration and dissolution. The evaluated parameters of capsule dosage form increase in solubility and dissolution rate of the pure drug.
Conclusion: These are various techniques to enhance the solubility of the drug, such as particle size reduction, use of surfactants, solid dispersion etc. Carriers are the major players in these formulations, e. g. Hydroxypropylmethylcellulose, ethylcellulose, Carbopol, Acacia Gum etc. Carbopol and Acacia Gum is one of the most efficient polymers work as a carrier for these drugs to enhance solubility.