bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reactive Power Control of a 3-phase Grid-Connected Building Integrated Photovoltaic System
Authors: Rasul M J M A , Kolhe Mohan 
Published: August 2019

Abstract
Recently, a tendency in the growing of grid-connected building integrated photovoltaic (BIPV) systems has been noticed in most countries. Hence, high penetration of PV power into the system network can be observed in many points in the network. This may cause severe problems in the distribution network originated by the intermittent behaviour of PV systems. As a feasible solution, the reactive power capability of voltage source inverter in PV systems can be employed rather than approaching expensive grid infrastructures in the distribution network. The purpose of this study is to implement a 3-phase grid-connected BIPV system with reactive power control to regulate the system voltage and improve the system power factor. Subsequent to this, the system model is designed and developed in MATLAB Simulink application. The inverter control system along with the reactive power control is developed for the proper system operation at different system conditions to reduce the var compensation on the utility grid. A better system accuracy of the developed system model is verified by validating with real system data.
The Influence of Mg/Cu on Tensile Properties of ZA27 Alloy
Authors: Zhang Hui , Zhu Yanqing , Li Ning , Huang Yao , Zhao Chengzhi , Zhang Hexin 
Published: August 2019

Abstract
In this paper, the addition of magnesium and copper was changed to investigate the effect of magnesium and copper on the tensile properties of ZA27(Zn-27Al) alloy. The experimental results showed that Zn-27Al-0.8Mg has the largest tensile strength of 294.61 MPa. The fracture of Zn-27Al-xMg alloy was mainly related to the newly precipitated magnesium phases (β+β´). For the Zn-27Al-xCu alloy, when the amount of copper added was 0.4wt.%, the tensile strength reached 292.58 MPa, and when the amount of copper added was 2.0wt.%, the elongation even reached 80%, indicating that the alloy has good plasticity. The fracture of the Zn-27Al-xCu alloy was mainly related to defects in the structure and the second phase particles.
Effects of heat treatment on microstrucutures of a Re-containing Ni-based single crystal superalloy
Authors: Zhang J , Gao L Q , Liu Y F , Zhao J X , Zhang X T 
Published: August 2019

Abstract
Effects of heat treatment on microstrucutures of a Re-containing single crystal superalloy have been investigated. The results showed that (γ+γ′) eutectic in as-cast alloy is practically dissolved with solution heat treatment, and the degree of segregation is distinctly decreased. The size, morphology and distribution of γ′ phase are mightily affected by the first-stage ageing treatment temperature. When the first-stage ageing treatment temperature lower than 1160°C, the shape of the γ′ phase is cubic. But the γ′ phase shape is transformed to sphericity when the temperature higher than 1180°C. The γ phase channel width is significantly increased, and the fine γ′ phase precipitated in the γ phase matrix channel.
Research status of on-line monitoring of laser metal deposition
Authors: Jiang Zhaojun , Wang Jun 
Published: August 2019

Abstract
The process of laser metal deposition was easy to be affected by fluctuations of environment and process parameters, leading to the deviation of melt pool temperature or deposition morphology and so on. Accumulation of small deviation would result in the instability of deposition process and lead to the failure of forming. Therefore, the on-line monitoring of laser metal deposition process was studied, involving thermal history of forming parts, temperature and size of melt pool, deposition morphology and forming defects, and so on. In this paper, the on-line monitoring technologies, such as thermocouple temperature measurement, infrared thermal imaging, high-speed camera and other monitoring methods, were introduced, and the open-loop monitoring, closed-loop feedback control and closed-loop feedforward control technologies were illustrated in detail. According to the research situation, the future development of on-line monitoring in laser metal deposition was prospected.
Effects of Decalcifying Agents of Variable Duration on PD-L1 Immunohistochemistry
Authors: Strickland Amanda L , Blacketer Sara , Molberg Kyle , Markantonis John , Lucas Elena 
Published: August 2019

Abstract

Objectives
To evaluate the effects of decalcifying agents on programmed cell death ligand 1 (PD-L1) immunohistochemistry (IHC).

Methods
Fragments of 10 placentas (high PD-L1 expressor) and 10 lungs (lower PD-L1 expressor) were formalin-fixed and subjected to four decalcifying solutions (EDTA, formic acid/MasterCal IM Plus [FA/MC], 12% HCl, and Decal STAT/23% HCl) for 1, 2, 6, or 24 hours. H&E staining and PD-L1 using IHC 22C3 pharmDx were performed, and PD-L1 staining was assessed.

Results
Minimal to no change in staining intensity or proportion of stained cells was seen with EDTA or FA/MC at all decalcifying durations. Both HCl-based decalcifiers demonstrated a progressive decrease in percentage of positive cells and staining intensity with longer decalcifying duration, particularly with Decal STAT.

Conclusions
EDTA and FA/MC have little effect on PD-L1 expression. 12% HCl causes a progressive decline in staining. Decal STAT dramatically reduced staining with all treatment durations, especially at 24 hours.
The Evolving Field of Genetic Epidemiology: From Familial Aggregation to Genomic Sequencing
Authors: Duggal Priya , Ladd-Acosta Christine , Ray Debashree , Beaty Terri H 
Published: August 2019

AbstractThe field of genetic epidemiology is relatively young and brings together genetics, epidemiology, and biostatistics to identify and implement the best study designs and statistical analyses for identifying genes controlling risk for complex and heterogeneous diseases (i.e., those where genes and environmental risk factors both contribute to etiology). The field has moved quickly over the past 40 years partly because the technology of genotyping and sequencing has forced it to adapt while adhering to the fundamental principles of genetics. In the last two decades, the available tools for genetic epidemiology have expanded from a genetic focus (considering 1 gene at a time) to a genomic focus (considering the entire genome), and now they must further expand to integrate information from other “-omics” (e.g., epigenomics, transcriptomics as measured by RNA expression) at both the individual and the population levels. Additionally, we can now also evaluate gene and environment interactions across populations to better understand exposure and the heterogeneity in disease risk. The future challenges facing genetic epidemiology are considerable both in scale and techniques, but the importance of the field will not diminish because by design it ties scientific goals with public health applications.
Relations Between Acculturation and Cognitive Outcomes in a Sample of Latino Preschool Children
Authors: Crossland M , Lonigan C 
Published: August 2019

Abstract

Objective
Culture and ethnicity significantly affect cognitive test performance of adults and children. However, no prior studies have examined the effect of acculturation on the cognitive test performance of toddlers. This study examined the relationship between parental acculturation and cognitive test scores among Latino preschoolers.

Participants and Method
In this study, 1300 Latino toddlers (50% F; M age = 53.7 months, SD = 5.2) completed the Definitional Vocabulary subtest of the Test of Preschool Early Literacy (TOPEL), the Revised Get Ready to Read Screening Tool (GRTR) and, if they spoke Spanish, the Definitional Vocabulary subtest of the Spanish Early Literacy Assessment (SPELA) pre-intervention. Parents completed the Acculturation Scale for Mexican Americans (ARMAS) for a measure of acculturation.

Results
Exploratory SEM of the ARMAS revealed 4 factors: 2 language preference factors and 2 cultural identity factors. All factors were significantly related to cognitive outcomes (ps &lt; .001) - except for the Latin Identity factor’s relation to the GRTR. English Language Preferences (ELP) and Anglo Identity (AI) factors showed positive associations to tests administered in English; as test scores increased along with ELP and AI. For SPELA, as test scores increased, ELP and AI decreased. For Spanish Language Preferences and Latin Identity factors, relations with test scores were the opposite of those for ELP and AI. Multiple regression analyses showed that both ARMAS language factors uniquely predicted SPELA scores (R2 = .17), and the ELP factor uniquely predicted TOPEL (R2 = .30) and GRTR (R2 = .16) scores. The ARMAS identity factors did not uniquely predict any test score.

Conclusions
Acculturation does impact performance on cognitive measures. Importantly, language preferences have a larger effect on cognitive outcomes than identity factors. Findings support the need to consider cultural variables when interpreting outcomes on cognitive tests in toddlers, particularly language preferences.
Predictors of Neurocognitive Impairment in Spanish-Speaking Latinos Living with HIV in the United States using Newly Developed Neuropsychological Test Norms
Authors: Hussain M A , Kamalyan L , Diaz M M , Umlauf A , Franklin D R , Cherner M , Rivera Mindt M , Artiola i Fortuny R , Heaton R K , Marquine M J 
Published: August 2019

Abstract

Objective
HIV-associated neurocognitive impairment (NCI) is prevalent and impactful. Yet, there is an absence of published studies that investigate its correlates among Spanish-speaking Latinos living in mainland US- a demographic that represents a large and vulnerable segment of the HIV+ population. The goal of the current study was to examine predictors of NCI among Spanish-speaking Latinos with HIV living in the United States.

Participants and Method
153 Spanish-speaking Latinos living with HIV from the US-Mexico border region (Age: M = 38.2, SD = 9.7; Education: M = 10.9, SD = 3.6; 73% female; 56% AIDS) completed comprehensive neuropsychological, neuromedical, and psychiatric evaluations in Spanish. Scores across 7 cognitive domains were converted to a Global Deficit Score (GDS) based on T-scores on individual tests using newly developed, region specific, and demographically-corrected norms for Spanish-speaking Latinos. NCI was determined using cutoff of GDS &gt; 0.5 (39.2% of sample). Examined predictors included HIV disease characteristics (e.g., AIDS status, current CD4 count, duration of antiretroviral therapy (ART) exposure) and psychiatric comorbidities.

Results
A multivariable logistic regression - including predictors that were associated with NCI in univariable analyses - showed a significant interaction between lifetime history of substance use disorder (LT SUD) and duration of ART exposure, after accounting for AIDS status (LR Chi2 = 3.99, p = 0.046). Stratified analyses showed that among participants who did not have LT SUD, longer ART exposure was associated with decreased NCI (p = 0.01), while rates of NCI among those with LT SUD were not influenced by months of ART exposure (p = 0.91).

Conclusions
Present findings showed that HIV disease burden and psychiatric characteristics might interact to impact NCI among Spanish-speaking Latinos. Considering these influences may help in the provision of comprehensive care to Spanish-speaking, Latino minority groups that suffer from NCI and HIV.
The Roles of Health Literacy and Physician-Patient Relationship in Self-Reported Health Outcomes Within a Diverse Sample of Persons Living with HIV
Authors: Santana E , Gonzalez J , Byrd D , Rivera Mindt M 
Published: August 2019

Abstract

Objective
Barriers like poor health literacy and patient-provider communication add to health disparities in diverse populations. Perceived autonomy has been shown to improve patients’ health satisfaction and knowledge of their illness. However, no studies have examined these issues in HIV patients. This study examined the roles of health literacy and physician-patient relationship in health outcomes (e.g., mental health and emotional/physical functioning) in persons living with HIV (PLWH).

Participants and Method
This cross-sectional study included 91 PLWH (74% Latinx and 26% non-Latinx White; 68% Male) who completed the Test of Functional Health Literacy in Adults (TOFHLA), Physician–Patient Relationship Scale (PPRS), and Medical Outcomes Study-HIV Health Survey (MOS). The study variables included: TOFHLA total score, PPRS Part Decision- Making (PDM) and Trust subscales, and MOS Mental Health and Health Transition subscales.

Results
A linear regression showed that our model (ethnicity, TOFHLA, PPRS PDM and Trust) predicted MOS HT (R2 = .14, p &lt; 0.05), such that Latinx ethnicity (β = .30) and better TOFHLA scores (β = -.22) predicted better MOS HT scores (ps &lt; .05). Another regression showed that our model predicted MOS MH (R2 = 0.07, p = &lt;.01), such that greater PPRS PDM scores predicted better MOS MH scores (β = .27, p = &lt;.01).

Conclusions
Ethnicity and better health literacy were related to improved emotional/physical functioning over a 4-week period and greater shared decision-making was related to better overall mental health. These findings highlight the importance of identifying sociocultural factors and interpersonal processes of care to inform culturally-tailored interventions that can result in enhanced and effective treatment for PLWH patients and in improved physical and mental health outcomes.
Bridging Representation Gaps in Big Data: An Alzheimer's Disease Neuroimaging Initiative (ADNI) Investigation
Authors: Tureson K , Gold A I , Thames A D 
Published: August 2019

Abstract

Objective
Large-scale research consortium studies are increasingly used to help aid in early identification of age-related brain changes and neurodegenerative disease risk. Racial/ethnic minorities (REM) are severely underrepresented in publicly available datasets related to neurodegenerative disease. This is problematic given that the US older adult population will be comprised of 40% REM by 2050. As this population grows more diverse, it is crucial that Alzheimer’s disease (AD) risk factors are appropriately characterized and REM are represented in longitudinal research. The purpose of this study was to examine memory, Apolipoprotein E (APOE) status, and hippocampal volume (HV) data among REM participants in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) cohort.

Participants and Method
We sampled 91 Latinx and Non-Hispanic Black (NHB) ADNI participants, which included 41 controls (CN; 39% Latinx) and 50 individuals with mild cognitive impairment (MCI; 52% Latinx). Measures included Logical Memory (LM) Delay, Rey Auditory Verbal Learning Test (RAVLT), Alzheimer’s Disease Assessment Cognitive 13-item Scale (ADAS13), APOE e4 and APOE e2 status, and HV. Groups did not differ by age, education, or memory performance. None of the Latinx sample were e2 carriers, whereas 32% of NHB were e2 carriers.

Results
For NHB and Latinx MCI groups, LM Delay scores positively predicted greater HV (NHB: R2 = .17, p = .04; Latinx: R2 = .16, p = .04). Better RAVLT performance predicted greater HV for the Latinx MCI group but not for the NHB MCI group (Latinx: R2 = .13, p = .06). For NHB CN, e4 status and ADAS13 were positively correlated (r = .59, p = .002) but negatively correlated for Latinx CN (r = -.58, p = .002). APOE e2 and RAVLT percent forgetting were negatively correlated for NHB MCI (r = -.49, p = .01).

Conclusions
There appears to be differential risk associated with heterozygous e4 status in Latinx and NHB. APOE e2 may have been protective in the context of e4 in NHB. The degree to which e2 is protective in Latinx is unknown. Results highlight the need for improved REM representation in large-scale studies to understand genetic risk and protective factors in REM.
Influence of Acculturation on Emotional Learning and Memory in Spanish and English Speakers
Authors: Zink D N , Kuwabara H , Reyes E , Gomez-Batista S , Reyes A , Alvarez E , Strauss G P , Allen D N 
Published: August 2019

Abstract

Objective
The Emotional Verbal Learning Test-Spanish (EVLT-S) is a novel list learning test similar in structure to traditional verbal memory tests but contains words from 4 discrete emotional categories. Influence of acculturation on emotional learning was examined on EVLT-S learning trials 1 to 5.

Participants and Method
Participants included 50 bilingual healthy individuals in the Spanish-dominant group (Age M = 20.3years; 72% female) and 27 in the English-dominant group (Age M = 23.4years, 51.9% female). They were administered a battery of tests including the EVLT, a non-emotional verbal list learning test (LLT), Vocabulary (VC), Digit Span (DS), and The Short Acculturation Scale for Hispanics (SASH) in their dominant language. To examine learning curves a mixed model ANOVA was conducted with test (EVLT-S/EVLT, LLT-S/LLT) and trial as within-subjects variables and group (Spanish, English) as a between-subjects variable.

Results
There were significant main effects (p &lt; .005) for test, trial, and group. The Spanish-dominant group had the lowest overall performance on the EVLT-S (main effect for group). Post hoc comparisons of the Spanish-dominant group’s LLT-S and EVLT-S performance indicated significant differences at each trail (p &lt; .01), with the EVLT-S scores being lower than the LLT-S scores. The ANOVA was repeated with VC, DS, and SASH included as covariates. When controlling for these variables, the main effect for group was no longer significant. A significant trial by acculturation interaction effect emerged (p&lt;.05), with the English-dominant group generally performing better than the Spanish-dominant group.

Conclusions
Results suggest that Spanish and English language group differences were largely accounted for by word knowledge (VC), working memory (DS), and acculturation differences (SASH) between the groups. The role of these variables is discussed further in the context of acculturation.
Soroxchi after Traveling to South America: Cognitive and Neurobehavioral Changes in a Patient with Bilateral Globus Pallidus Lesions
Authors: Baena E , Strutt A M 
Published: August 2019

Abstract

Objective
Soroxchi/Acute Mountain Sickness (AMS) is a condition that can result in cerebral and pulmonary hypoxia. Neuropsychological research on AMS is minimal and the long-term effects on cognition and behavior are unclear. AMS is associated with cognitive impairments in processing speed, attention, and executive functions as well as neurobehavioral symptoms. This case study delineates the neuropsychological and neurobehavioral changes secondary to bilateral globus pallidus (GP) lesions associated with AMS.

Case Description
Patient is a 51-year old, primarily Spanish-speaking, male of Mexican descent with 9 years of education, and who had traveled to La Paz, Bolivia (4,070 MASL) for work. Upon arrival, fatigue and dizziness led to hospitalization to treat acute pulmonary edema and hypoxia. Brain MRI revealed hyperintense bilateral GP lesions. Medical history was notable for hyperlipidemia. Psychiatric history was unremarkable. Neuropsychological assessment 4 months post-AMS revealed impairments in visuo-conceptual and speeded complex visuospatial abilities, executive functions, and confrontation naming. Cognitive improvements were noted in delayed recall of non-contextual verbal information and confrontation naming ten months post-AMS. Significant mood and personality changes were reported; patient endorsed anhedonia, fatigue, alexithymia, avolition, and sleep difficulties. Family described patient as depressed, apathetic, and socially withdrawn. Pharmacological and psychotherapy treatments were recommended and initiated.

Diagnostic Impressions and Outcomes
Findings were consistent with a diagnosis of Mild Neurocognitive Disorder. His family denied neurobehavioral improvements post interventions.

Discussion
This case study is the first to characterize the long-term neuropsychological and neurobehavioral changes following bilateral GP lesions secondary to AMS. Declines in visual-conceptual abilities reveal a new finding for this type of cerebral incident.
Informal Neuropsychological Evaluation of English Learning Aptitude in Linguistically, Educationally, and Epidemiologically Diverse Populations
Authors: Judd T 
Published: August 2019

Abstract

Immigration generates the need to acquire mastery of the English language for education, employment, citizenship, and other needs. Many immigrants bring with them unrecognized neuropsychological disabilities that hinder such learning. Neuropsychologists may be asked to evaluate such clients with respect to: Disability exemptions from mandatory language instructionInstructional strategies, compensations, and accommodationsStrategies, compensations, and accommodations to facilitate optimal communication and learning in the workplace, court, health care, and other settings.

Immigrants often do not have remote medical or educational records documenting historical cognitive difficulties. Many speak languages for which pertinent language ability testing is not available. Furthermore, developmental language learning disorders often have distinctive presentations in different writing systems. When documented history and formal evaluation of native language abilities are not available, informal evaluations become the next best alternative. This poster will present a suite of techniques that can facilitate this process, including: Researching the linguistics and writing system of the native languageQuestions regarding personal history that can give indications of developmental disabilities, even in the uneducatedTechniques for testing and interpreting native language literacyTechniques for evaluating English knowledge and capacityTechniques for evaluating English phonemic aptitudeTechniques for evaluating English phonemic learning aptitudeTechniques for evaluating potential for using translation technologies
The poster will also outline compensations and accommodations for learning and communication that neuropsychologists can recommend for such populations.