Miracle-dz/UniFAR-FTUs huggingface dataset:
The Incremental Validity of Spatial and Perceptual-Psychomotor Tests Relative to the Armed Services Vocational Aptitude Battery

Abstract : This research evaluates the utility of new Army tests of spatial, perceptual, and psychomotor abilities developed under the Army's Project A (improving the Selection, Classification, and Utilization of Army Enlisted Personnel). Utility is judged in terms of incremental validity over the Armed Services Vocational Aptitude Battery (ASVAB). The analyses are stepwise regressions using predictors and performance tests form the 1985 Concurrent Validation of Project A. A variety of performance measures, ranging from comprehensive to task-level, served as criteria for the analyses. In the analyses, optimal combinations of Project A predictors substantially augmented the proportion of criterion variance explained by optimal combinations of ASVAB scores alone, particularly for such comprehensive measures as General Soldiering Proficiency and the combined score on written tests of school and job knowledge. In certain Military Occupational Specialties (MOS), Project A scores led to increments in the predictability of more specific criteria, such as Target Identification and Navigation. While no strong support was found for the relative superiority of spatial versus perceptual-psychomotor scores, there was evidence that some individual tests (viz., Assembling Objects, Figural Reasoning, and Target Identification) were more useful than others as incremental predictors of the criteria. Because of the concurrent design used and the lack of opportunities for cross-validation, these generally favorable findings only the suggest the results to be expected from the Longitudinal Validation of Project A.
Primary energy demand and energy costs of fixed-bed drying using the example of chamomile flowers

Abstract Energy use efficiency in the drying of medicinal and aromatic plants is largely determined by weather conditions and process parameters. While the former are beyond control, the latter can be optimized. In order to achieve such optimization, different energy supply variants, based on typical operating conditions of batch-type grate drying in Thuringia, Germany, were analyzed. It was found that partial air recirculation and integration of heat pumps allow substantial savings in primary energy. However, under the constraint of German energy prices, significant savings in energy costs can only be achieved if combined heat and power generation systems are applied at the same time.
Characterization and Comparative Analysis of Transcriptional Profiles of Porcine Colostrum and Mature Milk Across Multiple Parities

BackgroundThe expression of genes and their regulation during lactation in swine is not well-understood. In order to gain a better understanding of genes and pathways involved in sow lactation, total RNA from colostrum and mature milk samples were sequenced from 65 sows across four parities. A stringent bioinformatic pipeline was used to identify and characterize 44,234 transcripts. ResultsThe 44,234 identified transcripts included 41,875 previously annotated transcripts and 2,359 novel transcripts. Differential gene expression analysis was conducted using a generalized linear model coupled with the Lancaster method for P-value aggregation across transcripts. In total, 1,900 differentially expressed genes (DEG) were identified for the milk type main effect, and 373 DEG were identified for the milk type x parity interaction. Several gene ontology (GO) terms related to immune response were significant for the milk type main effect, supporting the widely-accepted hypothesis that immunoglobulins and immune cells are transferred to the neonate via colostrum.ConclusionsThis is the first study to perform global transcriptome analysis from whole milk samples in sows from multiple parities. Our results provide important information and insight into synthesis of milk proteins and innate immunity and potential targets for future improvement of swine lactation and piglet development.
Produção de quitina, quitosana e biossurfactante, por Cunninghamella elegans UCP/WFCC 0542 em meio suplemento com residuários agroindustriais

Um dos grandes desafios na producao biotecnologica e a producao de insumos de alto valor agregado a um baixo custo. Neste contexto, o fungo filamentoso Cunninghamella elegans apresenta em sua parede celular grandes quantidades de quitina e quitosana, como tambem e capaz de produzir biossurfactantes. A quitina e quitosana apresentam um vasto campo de aplicacoes biotecnologicas, e na biorremediacao vem sendo utilizado na remocao e recuperacao de diferentes residuos, biotransformacao de poluentes e descoloracao de efluente textil. Estes biopolimeros possuem estruturas lineares, com unidades monomericas β-1,4-N-acetil-D-glicosamina e β-1,4-D-glicosamina, respectivamente. Por outro lado, os biossurfactantes sao compostos sintetizados por micro-organismos, apresentando propriedades como a reducao da tensao superficial e interfacial, emulsificacao, solubilizacao e dispersao de fases, sendo muito aplicado na industria petroquimica. Estudos com Cunninghamella elegans UCP/WFCC 0542 foram realizados com objetivo de avaliar o seu potencial biotecnologico para a producao de quitina, quitosana e biossurfactante com a utilizacao de residuos agroindustriais (milhocina e oleo de soja pos-fritura), atraves de um delineamento central composto rotacional de 2². Os biopolimeros quitina e quitosana foram obtidos atraves de tratamento alcali-acido, com hidroxido de sodio 1M, e posterior emprego de acido acetico a 2%. As propriedades tensoativas do biossurfactante foram avaliadas pela determinacao da tensao superficial do liquido metabolico livre de celulas. A producao de biomassa por C. elegans foi de 8,12 g/L de com rendimentos de 0,095 mg/g de quitina e 0,036 mg/g de quitosana, com um grau de desacetilacao de 87,44%, na condicao proposta. O biossurfactante obtido na condicao 8 do planejamento com 2,15% de milhocina e 5,22% de oleo de soja pos-fritura demonstrou a melhor tensao superficial com 28,20 mN/m-1 e apresentou estabilidade frente a diferentes condicoes ambientais, possuindo carater anionico e sua composicao bioquimica preliminar sugere que o biossurfactante isolado seja constituido por proteinas e lipideos. Tambem este se mostrou eficiente na remocao de compostos hidrofobicos derivados do petroleo, com remocao de 55,15% de oleo de motor, 71,42% de petroleo bruto, 77,46% de querosene e 96,41% de oleo diesel em areia de praia. Testes de toxicidade do biossurfactante com sementes de Brassica oleracea provaram seu carater atoxico. Os resultados obtidos demonstram o potencial biotecnologico de C. elegans a partir substratos agroindustriais alternativos e de baixo custo, possibilitando o seu emprego em processo de biorremediacao na recuperacao ambiental.
Human factors issues in head-up display design : the book of HUD

The focus of this document is on presenting the current state of the art for head-up displays (HUDs) and providing specific values for display parameters, based on the capabilities and limitations of the human user. After an introduction, the report describes HUD hardware parameters. HUD symbology parameters and recommendations are then discussed. The next section examines the human factors related variable that should be considered in HUD design and development. The last section deals with special issues related to HUDs, including the type of frame of reference, information requirements, alerting strategies, the need for symbol integration, and the value of moving tapes.
Feasibility of Very Large Sparse Aperture Deployable Antennas

Abstract : The objective of this research is to explore the technical soundness of a very large, cross-shaped, parabolic, sparse aperture antenna extending 75 m from the bus. Specifically, describing the environment of the satellite, the effect of fabrication error on the structure and the remaining error budget for the system. The methodology involves creation of an ideal truss structure, to which all others are compared. A uniform distribution of proportional errors up to 1e-5 is introduced into the truss members? lengths and the models are subjected to a static Finite Element Analysis. A solution for the surface normal error is addressed using Lagrange multipliers. The goal is to hold the surface normal error for the entire satellite below a root mean square of 15 mm. The analysis yields a surface error of less than 1.53 mm, well within requirements. Despite the enormous size of the antenna reflector, and tight diameter/surface error ratio of 10,000 required for L-band communication, the system seems feasible. The values achieved for truss induced surface errors are in line with established techniques for analyzing full aperture, and strip, mesh antennas. With the mesh reflector and truss largely defined, nearly half of the 15 mm error budget remains.
Molecular analysis and pathological changes of infectious bronchitis virus isolated from broilers in Beheira Governorate

: I nfectious bronchitis (IB) is considered to be one of the major causes of economic loss in the chicken production sector in many countries including Egypt, even in vaccinated flocks. In the present study, tracheal swabs and different organs (trachea, paranasal sinuses , bronchi , lung and kidney) were collected from 30 broiler farms showing respiratory signs and variable mortalities in different localities of Behira governorate at the period from Jan-uary 2017 to March 2020 in order to determine the genetic changes occurred in hypervariable region I and II of S1 gene of IBV and also the pathological changes associated its infection. The virus was isolated then detected by real-time RT-PCR in the aforementioned samples. About 56.7% (17/30) from the investigated farms were positive for IBV infection. S1 gene has been partially sequenced for three recent isolates and phylogenetic analysis revealed close relatedness with each other. These isolates belong to genotype 1- lineage 23 (G1- 23), and shared less than 84.4% and 79.5% nucleotide and amino acid identities, respectively, with the commercial vaccine strains used in Egypt. The study also showed similar pattern of viral evolution to IBV at Egypt and Israel. Pathological examination of paranasal sinuses, trachea and bronchi revealed the presence of mucous exudate, epithelial erosion in some cases and hyperplasia in others. Lung showed severe interstitial pneumonia while kidneys showed multiple focal areas of necrosis with lymphocyte aggregation. It can be concluded that
Design and Ground-Testing of an Inflatable-Rigidizable Structure Experiment in Preparation for Space Flight

Abstract : As the demand for larger space structures increases, complications arise including physical dimensions, weight, and launch costs. These constraints have forced the space industry to look for smaller, more lightweight, and cost-effective solutions. Future antennas, solar sails, sun shields, and other structures have the potential to be exponentially larger than their launch envelopes. Current research in this area is focused on the use of inflatable, rigidizable structures to reduce payload size and mass, ultimately reducing launch costs. These structures can be used as booms, trusses, wings, or can be configured to almost any simple shape. More complex shapes can be constructed by joining smaller rigidizable/inflatable members together. Analysis of these structures must be accomplished to validate the technology and gather risk mitigation data before they can be widely used in space applications. The Rigidizable, Inflatable, Get-Away-Special Experiment (RIGEX) was created to test structures that meet the aforementioned demand for smaller, more lightweight, and cost effective solutions to launching payloads into space. The purpose of this experiment is to analyze the effects of the space environment on inflatable, rigidizable structural components and validate ground-test procedures for these structures. This thesis primarily details the pressurization system enhancements and validates thermal performance for RIGEX. These enhancements and the increased knowledge of the thermal properties will improve the probability of experiment success.
Promoting Airmen with the Potential to Lead: A Study of the Air Force Master Sergeant Promotion System

Abstract : As operations become more jointly connected with other military services and the Air Force becomes smaller, there is concern that more leadership responsibility and authority is being pushed down to noncommissioned officers. Therefore, as the first level of senior noncommissioned officer leadership, the ability of master sergeants (E-7) to be effective leaders is especially critical. In addition to training and development efforts, a key component of ensuring that master sergeants have the knowledge, skills, abilities, and other characteristics (KSAOs) needed to fulfill the required leadership responsibilities is having an effective system to promote airmen with the greatest potential from the E-6 rank of technical sergeant to master sergeant. The current promotion system was developed more than 40 years ago and is designed to identify those people with the highest potential to fill positions of increased grade and responsibility (U.S. Air Force, 1993, p. 1). Despite changes in force size, operational requirements, and airmen s responsibilities, the Weighted Airman Promotion System (WAPS) and its underlying factors have remained largely unchanged since its establishment. Therefore, the goal of this study was to examine the master sergeant promotion system and provide recommendations for improving it. Our work was driven by three primary research questions: (1) What are the KSAOs that master sergeants need to be good leaders? (2) Is the current system effective at promoting airmen with the KSAOs needed to be good leaders? (3) If necessary, what are potential options for improving the master sergeant promotion system to ensure that master sergeants have the KSAOs they need to succeed?
COTTON DUCK BEARING PADS: ENGINEERING EVALUATION AND DESIGN RECOMMENDATIONS

Cotton duck bearing pads (CDPs) are sometimes used to support loads and accommodate movements and rotations at bridge bearings. CDPs are preformed elastomeric pads consisting of thin layers of elastomer interlaid with fabric, and they are manufactured under military specifications with limited guidance from the American Association of State Highway and Transportation Officials (AASHTO). The behavior of these CDPs was experimentally evaluated to establish design models for predicting this behavior, to determine the variation in behavior expected with different bearing pad manufacturers, and to develop design recommendations. This research is a follow-up study of an earlier research program sponsored by Arkansas State University. CDPs from three different manufacturers were tested, and the test program included dynamic and static (or monotonic) tests of bearings in shear, compression, and rotation. In general, the static tests were used to evaluate strength, stiffness, deformation limits, and general pad behavior. The dynamic tests examined durability and performance under repeated loading and deformation. The results of this test program were used to develop design recommendations, and an appendix includes a draft of proposed wording for modification of the AASHTO Load and Resistance Factor Design (LRFD) Specifications to include these design recommendations. In addition, a spreadsheet was developed in Microsoft EXCEL to accomplish the calculations necessary to complete the design.
Finite element analysis of a single conductor with a Stockbridge damper under Aeolian vibration

A finite element model is developed to predict the vibrational response of a single conductor with a Stockbride damper. The mathematical model accounts for the two-way coupling between the conductor and the damper. A two-part numerical analysis using MATLAB is presented to simulate the response of the system. The first part deals with the vibration of the conductor without a damper. The results indicate that longer span conductors without dampers are susceptible to fatigue failure. In the second part, a damper is attached to the conductor and the effects of the excitation frequency, the damper mass, and the damper location are investigated. This investigation shows that the presence of a properly positioned damper on the conductor significantly reduces fatigue failure.
Epifaunal Community Development on Great Lakes Breakwaters: An Engineering with Nature Demonstration Project

Abstract : This technical note describes an Engineering With Nature (EWN) project being conducted on the east arrowhead breakwater on Lake Erie in Cleveland Harbor, OH. Background information, project objectives, approaches, and preliminary monitoring results are included with this description. The U.S. Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC) has partnered with the USACE Buffalo District (LRB) to design and implement modifications to LRB s normal maintenance procedures for breakwater repairs at this site. The structural design modifications are intended to produce greater environmental benefits to invertebrate and fish communities than would be present otherwise using standard practices. This work was funded through the U.S. Environmental Protection Agency s Great Lakes Restoration Initiative managed by the Great Lakes National Program Office.
Prevalence of Soil Transmitted Helminth Infections in the Rural North of Ghana

Soil transmitted helminth infections are still prevalent in many villages in Northern Ghana despite several interventions such as school-based deworming programmes. The study assessed the prevalence and socio-demographic characteristics of soil transmitted helminth (STH) infections among the people of Bunkpurugu in Northern Ghana. A sample size of 396 stool samples were collected from respondents and analyzed using the Kato-Katz technique (cellophane faecal thick smear) to determine the level of intestinal ova/eggs in collected stool samples. The overall prevalence for STH was 20.86%. The prevalence of hookworm was 19%, followed by Taenia at 1.4%, other soil transmitted helminths at 0.4%. There was a statistical relationship between sex and hookworm seven times more to tested positive hookworm, those between five times more likely to test positive those CI: 1.058-111.757) were 10 times more likely to test positive for hookworm. Several helminths were recorded in this study with hookworm being the most predominant. The study therefore recommends that proper education and regular de-worming programmes should be organized in the study area.
Biological Effect of Some Metal Oxides Nanocomposites on Saccharomyces Cerevisiae

Досліджено вплив трьох типів наноструктурованих металовмісних сапонітових глин на життєздатність пивних дріжджів Saccharomyces cerevisiae. Експериментальні дані показують, що досліджувані матеріали, незважаючи на те, що вони мають частки нанометрового розміру, не проявляють інгібуючу дію на організми. У дослідженні продемонстровано значне збільшення кількості клітин для S. cerevisiaewas за дії наноматеріалів. Найбільша концентрація клітин була зареєстрована за дії нанокомпозиту Nb-Sap-EtO в концентрації 2 мг/мл, у цих умовах кількість клітин було збільшено до 5 разів у порівнянні з контролем. За даними МТТ тесту спостерігається стимулювання активності мітохондріальних редуктаз у пивних дріжджах за впливу наноматеріалів, які містять у своєму складі ніобій в концентраціях від 0,5 мг/мл.
Test Re-Test Reliability of Three Versions of the 3-Cone Test

Test Re-Test Reliability of Three Versions of the 3-Cone Test Jason G. Langley The primary purpose of this study was to examine the test re-test reliability of three versions of the 3-Cone Test (3CR). In addition, comparisons between the versions of the tests; and the relationships with leg dominance and body mass index (BMI) were to be determined. Forty students enrolled in classes in the Department of Physical Education at a mid-Atlantic university participated. On each of the testing days the participants performed ten total trials. In a random order, they performed three trials to the right (3CR), three to the left (3CL), and two modified trials (3CMR and 3CML), in which a visual cue was given to indicate which path was to be followed. Intra-class correlations (ICC) indicate a moderate to high reliability for the four tests, 3CR 0.81 (0.66-0.84 95%CI), 3CL 0.73 (0.54-0.85), 3CMR . 83(0.71-0.91), and 3CML 0.80 (0.65-0.89). Small standard error of the measurement (SEM) were found and ranged from 0.25-0.34. Pearson correlations between tests were high (0.82-0.92) on day one as well as day two (0.84-0.89). Having only six left-footed participants did not allow for comparisons between dominant side and test direction; however, BMI was moderately correlated with each of the tests ranging from 0.70-0.73. These results indicate each version of the 3CR is reliable; however, further testing is needed with athletic populations. The high correlation indicates only one version of the test is needed to reliably test for agility. By definition only the 3CMR and 3CML should be considered tests of agility due to their inclusion of a reactive component. Future studies utilizing agility testing and training should incorporate technology including gate systems and video analysis. These tools will allow for the better design of open tests that simulate game conditions.
Issuing a Split Benefit in SNAP: Implications for Recipients

3 Introduction 4 History of the Supplemental Nutrition Assistance Program 4 Health of the SNAP Population in the Context of the U.S. Population 6 Literature Review on Issuing a Split Benefit 7 Research Methods 9 Interview Results 11 SNAP Participant Interviewee Demographic Information 11 SNAP Participant Interviewee Program Benefits and Shopping Behavior Responses 12 SNAP Participant Interviewee Potential Effect of Bi-Monthly Disbursal Responses 12 Food Pantry Manager Responses 13 Grocery Store Industry Responses 15 SNAP Researcher Responses 15 Discussion and Analysis 17 Benefits to Bimonthly SNAP Benefit Disbursal 18 Costs to Bimonthly SNAP Benefit Disbursal 19 Summary and Recommendation 20 Recommendation Guidance 20 Other options to improve SNAP recipient health 21 Appendices 23 Table 1: SNAP Monthly Benefit Issuance Schedule by State/Territory 23 Table 2: SNAP Recipient Interview Information 25 Table 3: SNAP Recipient Interviewee Demographic Information 25 Table 4: SNAP Recipient Interviewee Household Information 25 Table 5: SNAP Recipient Interviewee Benefit Information 26 Table 6: SNAP Recipient Interviewee Grocery Shopping Information 26 Table 7: SNAP Recipient Interviewee Information on Policy Change (of 31 respondents) 27 Table 8: Food Pantry Manager Interviewee Information 27 Works Cited 28
Application of ARI Skill Retention Model to Wheel Vehicle Maintenance Tasks

Abstract : The Skill Retention Model is a model that describes how people forget technical tasks in terms of such task characteristics as the number of steps in the task and the quantity of the job aids. We administered the Skill Retention Model to seven expert wheeled vehicle mechanical/instructors (SMEs) at the Ordnance Center School, Aberdeen, MD. A total of nine tasks were covered, five tasks in five hours on each of two days, with one task being evaluated on both days and one evaluator serving on both days. We identified three out of nine tasks that are rapidly forgotten. Out of ten task characteristics, five differentiated the three tasks easily forgotten from those that are not easily forgotten. We recommended ways to improve training and calculated how much retention would increase with improved training. Keywords: SME(Subject Matter Experts); Memory psychology; Military training effectiveness; Skill retention; Forgetting; Skill decay; Training cost effectiveness.