bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Deficit Irrigation on Yield and Oil Content of Sesame, Safflower, and Sunflower
Authors: Pabuayon Irish Lorraine B. , Singh Sukhbir , Ritchie Glen L. 
Published: September 2019

The use of deficit irrigation (DI) management in growing crops tolerant of the semiarid conditions in West Texas may save irrigation without significant yield penalties. Field experiments were conducted at New Deal, TX, in 2017 and 2018 to determine the effects of four levels of DI (extreme, severe, moderate, and mild) on the seed yield, yield components, harvest index (HI), and oil content of three oilseed crops: sesame (Sesamum indicum L.), safflower (Carthamus tinctorius L.), and sunflower (Helianthus annuus L.). Combined irrigation and precipitation equivalent to 345 mm applied throughout the crop's life cycle was sufficient to maintain growth and development without significant penalties to the yield, yield components, HI, and oil content of the crops. Seed yields ranged from 1241 to 1359 kg ha−1 in sesame, 1365 to 1676 kg ha−1 in safflower, and 1174 to 3367 kg ha−1 in sunflower. Oil content of sesame ranged from 50.1 to 52.3%, oil content of safflower ranged from 35.4 to 39.5%, and oil content of sunflower ranged from 24.0 to 46.8%. Heavy precipitation from vegetative to reproductive stage caused favorable conditions for pest proliferation and damage to sunflower, highlighting a possible pitfall due to its pest susceptibility. Results demonstrate that sesame, safflower, and sunflower are potential low‐input oilseed crops that can grow under DI conditions without significant reductions to yield and oil content. In conjunction with economic evaluations, these results can be useful when developing or re‐assessing guidelines for optimal agronomic practices involving non‐traditional crops under reduced irrigation.Core Ideas

Low water input can support acceptable growth and yield for oilseed crops.
Oilseed crops acclimatize to water deficit conditions to maintain productivity.
Deficit‐adapted crops thrive under low precipitation during growth.
Deficit‐adapted crops can maintain productivity despite reduced water application.
Herbage Characteristics of Continuously Stocked Limpograss Cultivars under Stockpiling Management
Authors: Vendramini Joao M. B. , Sollenberger Lynn E. , de Oliveira Fabio C. Leite , Herling Valdo R. , Gomes Vinicius C. , Sanchez Joao M.D. , Yarborough James K. 
Published: September 2019

ABSTRACTLimpograss [Hemarthria altissima (Poir.) Stapf & C.E. Hubb.] is commonly used as stockpiled forage. Variation in forage characteristics during the stockpiling period may affect supplementation strategies. Our objective was to characterize herbage mass (HM) and nutritive value of different canopy layers of stockpiled limpograss under continuous stocking from January to March in 2014 and 2015. Treatments were two limpograss cultivars (Floralta or Gibtuck) and three canopy layers (below 25 cm [CL0], 25–50 cm [CL25], or above 50 cm [CL50]) sampled biweekly. Gibtuck had greater HM (6.1 vs. 5.5 Mg ha−1) and in vitro digestible organic matter (IVDOM, 490 vs. 440 g kg−1) than Floralta. Herbage mass was 4.2, 3.3, and 1.0 Mg ha−1 in January, 2.5, 3.2, and 0 Mg ha−1 in February, and 3.4, 0.3, and 0 Mg ha−1 in March for CL0, CL25, and CL50, respectively. The IVDOM concentrations were 380, 470, and 570 g kg−1 in January for CL0, CL25, and CL50, and 390 and 450 g kg−1 in February and 390 and 400 g kg−1 in March for CL0 and CL25, respectively. Leaf proportion in the canopy decreased from CL50 to CL0. To meet the nutritional requirements of beef cattle grazing stockpiled limpograss pastures, it is necessary to adjust the supplementation quantity and composition during the stockpiling period due to the variation in HM, plant‐part proportion, and nutritive value of the canopy.
Pollen Preservation in Alluvial Soils: Implications for Paleoecology and Land Use Studies
Authors: Ricker Matthew C. , Stolt Mark H. , Zavada Michael S. 
Published: September 2019

Core Ideas
Floodplain soils preserve pollen that can reconstruct past climate and land uses.
Pre‐evaluation of soil properties will save future researchers time and money.
Alluvial pollen preservation data expand where paleoecology studies can be done.
Floodplain landscapes with fluctuating water tables are nontraditional sites for palynology studies, and therefore intrinsic alluvial soil properties and their relationship to pollen preservation are poorly understood. The primary objective of this study was to identify soil properties that are most related to pollen preservation in floodplains to aid in predicting soil pollen presence and abundance. Our results indicate that all organic soil horizons had preserved pollen, whereas mineral horizons had variable pollen concentrations (range, 0–59,000 grains g−1 soil). Mineral samples with preserved pollen (>0 grains g−1 soil) had significantly greater (p < 0.001) soil organic matter (SOM) and silt + clay, and were located closer to the modern soil surface. Regression analyses indicated that only SOM and C/N ratios were significant predictors of pollen abundance. The guidelines developed in this study can be used to identify samples that likely contain enough pollen for palynological analysis and save future researchers considerable laboratory time, effort, and cost.
Family Time and Family Structure as Correlates of Adolescents’ Self-Regulation in some Selected Junior Secondary Schools, Harari Regional State, Ethiopia
Authors: Mihret Amare Misganaw 
Published: September 2019

This research aimed to examine the relationship between family time and family structure with adolescents’ self-regulation in some selected Junior Secondary Schools, Harari Regional State, Ethiopia. To run on, data were collected through selfreporting questionnaire, standardized tests from 325 students selected through systematic sampling method. The data analysis was conducted using a t-test, Pearson product moment correlation, factorial ANOVA, and multiple regression. This research indicates that adolescents have a slightly lower level of self-regulatory behavior. There is a statistically significant relationship between adolescents’ self-regulation and family time, family structure, and family time activity. Family time activity especially those who have leisure or recreation time together has significantly influencing adolescence self-regulation; however, gender could not make such effect independently as well as in combination with family time activity. Moreover, among others, family time activity and family structure are found to be important predictors of adolescents’ self-regulatory skills. Among the variability, family time activity significantly has added to the prediction of self-regulation, accounting for 14,8% of the variability, while, family time activity and family structure together have added 17,7% of the variability. In the end, recommendations are also made for how to properly address the gaps noted in this research.
Subject-Object Engagement Study in Exhibition Spaces: A Comparison Between Taman Mini Indonesia Indah’s Pavilion and Indonesia Kaya Gallery
Authors: Wulandari Anak Agung Ayu , Ruki Ulli Aulia , Fajarwati Ade Ariyani Sari 
Published: September 2019

This research aimed to analyze the engagement between local visitor with objects in a conventional exhibition space and a technology-based exhibition space. The method of this research was a qualitative method with descriptive analysis. The data collection was done in two stages. The first stage was collecting secondary data or desk research. The next stage was the primary data collection using both qualitative and quantitative methods. Data were collected in two exhibition spaces; Riau Islands Province pavilion in Taman Mini Indonesia Indah as conventional exhibition space, and Indonesia Kaya Gallery that was located in the Grand Indonesia shopping mall as a technology-based exhibition space. The research shows visitors’ engagement emerges not only because of the objects itself but also of its surroundings; the path and signage, the lighting design, how the objects displayed and labeled that will create certain engagement with its audience. Technology also gives great help to create subject-object engagement. However, to appreciate and really engaged with the objects, the audience still wants to see real objects and not the digital substituted.
Price Fraction Changes Impact on Stock Trading Indicators: An Events Study on Indonesia Stock Exchange
Authors: Suprapto Adi Teguh , Mulyono Mulyono , Prihandoko Danang 
Published: September 2019

This research presented differences of stock price fraction system to stock trading indicator variables such as volume, value, and frequency of stock trading transactions on companies listed in Indonesia Stock Exchange. The purpose of this research was to measure and analyze the difference of stock price fraction system to stock trading indicator variables. Sample determination based on the sampling method was saturated, i.e., the technique of determining the sample by using all members of the population as a sample. The sample in this research used JCI data as it represents the 115 issuers listed on the Indonesia Stock Exchange during the research period. This research used Mann-Whitney U Test to find out whether there were differences between two groups of data that were not related (independent) with the classification; group 1 was the volume data, the value and frequency of stock trading before the new price fraction that was applied 02 May 2016. While the second group data volume, value and frequency of stock trading after applying the new price fraction 02 May 2016. This research finds that the stock trading indicators reflected by the trading volume of stocks, the value of the stock, and the frequency of stock trading has a significant difference before and after the implementation of the new stock price fraction.
Mitochondrial and Oxidative Impacts of Short and Long-term Administration of HAART on HIV Patients
Authors: Ikekpeazu Joy E. , Orji Oliver C. , Uchendu Ikenna K. , Ezeanyika Lawrence U.S. 
Published: September 2019

Background and Objective:
There may be a possible link between the use of HAART and oxidative
stress-related mitochondrial dysfunction in HIV patients. We evaluated the mitochondrial and
oxidative impacts of short and long-term administration of HAART on HIV patients attending the
Enugu State University Teaching (ESUT) Hospital, Enugu, Nigeria following short and long-term
therapy.

Methods:
96 patients categorized into four groups of 24 individuals were recruited for the study.
Group 1 comprised of age-matched, apparently healthy, sero-negative individuals (the No HIV
group); group 2 consisted of HIV sero-positive individuals who had not started any form of treatment
(the Treatment naïve group). Individuals in group 3 were known HIV patients on HAART for
less than one year (Short-term treatment group), while group 4 comprised of HIV patients on
HAART for more than one year (Long-term treatment group). All patients were aged between 18 to
60 years and attended the HIV clinic at the time of the study. Determination of total antioxidant
status (TAS in nmol/l), malondialdehyde (MDA in mmol/l), CD4+ count in cells/μl, and genomic
studies were all done using standard operative procedures.

Results:
We found that the long-term treatment group had significantly raised the levels of MDA,
as well as significantly diminished TAS compared to the Short-term treatment and No HIV groups
(P<0.05). In addition, there was significantly elevated variation in the copy number of mitochondrial
genes (mtDNA: D-loop, ATPase 8, TRNALEU
uur) in the long-term treatment group.

Interpretation and Conclusion:
Long-term treatment with HAART increases oxidative stress and causes mitochondrial
alterations in HIV patients.
A Model for Assessing Necessary Conditions for Rural Health Care’s Mobile Health Readiness: Qualitative Assessment of Clinician-Perceived Barriers
Authors: Weichelt Bryan , Bendixsen Casper , Patrick Timothy 
Published: September 2019

Background
Mobile health (mHealth) technology dissemination has penetrated rural and urban areas alike. Yet, health care organization oversight and clinician adoption have not kept pace with patient use. mHealth could have a unique impact on health and quality of life for rural populations. If organizations are prepared to manage mHealth, clinicians may improve the quality of care for their patients, both rural and urban. However, many organizations are not yet prepared to prescribe or prohibit third-party mHealth technologies.

Objective
This study explored organizational readiness for rural mHealth adoption, the use of patient-reported data by clinical care teams, and potential impact on improving rural health care delivery.

Methods
Semistructured, open-ended interviews were used to investigate clinicians’ current practices, motivators, and perceived barriers to their use of mHealth technologies in rural settings.

Results
A total of 13 clinicians were interviewed, and 53.8% (7/13) reported encouraging use of mHealth apps or wearable devices with rural patients. Perceived barriers to adoption were categorized into three primary themes: (1) personal (clinician), (2) patient, and (3) organizational. Organizational was most prominent, with subcodes of time, uniformity, and policy or direction. Thematic analysis revealed code-category linkages that identify the complex nature of a rural health care organization’s current climate from a clinician’s perspective. A thematic map was developed to visualize the flow from category to code. Identified linkages guided the development of a refined rural mHealth readiness model.

Conclusions
Clinicians (including physicians) have limited time for continuing education, research, or exploration of emerging technologies. Clinicians are motivated to learn more, but they need guidance through organization-led directives. Rural health care institutions should consider investing in mHealth analysis, tool development, and formal recommendations of sanctioned tools for clinicians to use with patients.
Applicability of the User Engagement Scale to Mobile Health: A Survey-Based Quantitative Study
Authors: Holdener Marianne , Gut Alain , Angerer Alfred 
Published: September 2019

BackgroundThere has recently been exponential growth in the development and use of health apps on mobile phones. As with most mobile apps, however, the majority of users abandon them quickly and after minimal use. One of the most critical factors for the success of a health app is how to support users’ commitment to their health. Despite increased interest from researchers in mobile health, few studies have examined the measurement of user engagement with health apps.ObjectiveUser engagement is a multidimensional, complex phenomenon. The aim of this study was to understand the concept of user engagement and, in particular, to demonstrate the applicability of a user engagement scale (UES) to mobile health apps.MethodsTo determine the measurability of user engagement in a mobile health context, a UES was employed, which is a psychometric tool to measure user engagement with a digital system. This was adapted to Ada, developed by Ada Health, an artificial intelligence–powered personalized health guide that helps people understand their health. A principal component analysis (PCA) with varimax rotation was conducted on 30 items. In addition, sum scores as means of each subscale were calculated.ResultsSurvey data from 73 Ada users were analyzed. PCA was determined to be suitable, as verified by the sampling adequacy of Kaiser-Meyer-Olkin=0.858, a significant Bartlett test of sphericity (χ2300=1127.1; P<.001), and communalities mostly within the 0.7 range. Although 5 items had to be removed because of low factor loadings, the results of the remaining 25 items revealed 4 attributes: perceived usability, aesthetic appeal, reward, and focused attention. Ada users showed the highest engagement level with perceived usability, with a value of 294, followed by aesthetic appeal, reward, and focused attention.ConclusionsAlthough the UES was deployed in German and adapted to another digital domain, PCA yielded consistent subscales and a 4-factor structure. This indicates that user engagement with health apps can be assessed with the German version of the UES. These results can benefit related mobile health app engagement research and may be of importance to marketers and app developers.
Collective Empowerment in Online Health Communities: Scale Development and Empirical Validation
Authors: Atanasova Sara , Petric Gregor 
Published: September 2019

BackgroundThe role of online health communities (OHCs) in patient empowerment is growing and has been increasingly studied in recent years. Research has focused primarily on individualistic conception of patients’ empowerment, with much less attention paid to the role of OHCs in the development of patients’ collective empowerment. Although OHCs have immense potential for empowerment that goes beyond the individual, the concept and scale of collective empowerment in OHCs have not yet been developed or validated.ObjectiveThis study aimed to develop an instrument for measuring collective empowerment in online health communities (CE-OHC) and to test its quality by investigating its factorial structure, reliability, construct validity, and predictive validity.MethodsThe CE-OHC scale was developed according to a strict methodology for developing valid and reliable scales. An initial set of 20 items was first tested in the pilot study conducted in 2016 using a sample of 280 registered users of Slovenia’s largest OHC. A refined version with 11 items was tested in the main study conducted in 2018 on a random sample of 30,000 registered users of the same OHC. The final sample comprised 784 users. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used to investigate the factorial structure, discriminant validity, and convergent validity of the scale. Cronbach alpha coefficient was used to determine the CE-OHC scale’s internal consistency. To establish the predictive validity, ordinary least squares regression was performed to test the role of CE-OHC in users’ civic participation.ResultsThe EFA resulted in a two-factor solution, and the two factors—knowledge of resources and resource mobilization for collective action—together explain 63.8% of the variance. The second-order CFA demonstrated a good fit to the data (root mean square error of approximation=0.07) and the scale had a good internal consistency (alpha=.86). Although evidence of the scale’s convergent validity was partially provided, discriminant validity of the scale remained unconfirmed. Overall, CE-OHC was confirmed to be a predictor of users’ civic participation, but the influence was somewhat weak and inconsistent across two subscales.ConclusionsThe proposed CE-OHC scale is a reliable and relatively valid instrument and serves as a good baseline to advance the measurement of collective empowerment in OHC contexts. This is the first scale developed for this purpose, and future research should focus on the development of a clear nomological network of the collective empowerment construct in relation to the OHC settings.
The Impact of War in Yemen on Immunization Coverage of Children Under One Year of Age: Descriptive Study
Authors: Torbosh Amr , Al Amad Mohammed Abdulla , Al Serouri Abdulwahed , Khader Yousef 
Published: September 2019

Background
After 2 years of war that crippled the capacity of the Yemeni National Health System and left only 45% of health facilities functioning, Yemen faced increasing vaccine-preventable disease (VPD) outbreaks and may be at high risk of polio importation.

Objective
The aim of this study was to determine the impact of the 2015 war on the immunization coverage of children under 1 year.

Methods
Data on vaccination coverage for 2012-2015 were obtained from the national Expanded Program on Immunization (EPI). The vaccination coverage was calculated at the national and governorate levels by dividing the number of actually vaccinated children by the estimated population of children under 1 year.

Results
Although there was an increase from 2012 to 2014 in the national coverage for penta-3 vaccine (82% in 2012 vs 88% in 2014) and measles vaccine (70% in 2012 vs 75% in 2014), the coverage was still below the national target (≥95%). Furthermore, the year 2015 witnessed a marked drop in the national coverage compared with 2014 for the measles vaccine (66% in 2015 vs 75% in 2014), but a slight drop in penta-3 vaccine coverage (84% in 2015 vs 88% in 2014). Bacillus Calmette–Guérin vaccine also showed a marked drop from 73% in 2014 to 49% in 2015. These reductions were more marked in governorates that witnessed armed confrontations (eg, Taiz, Lahj, and Sa’dah governorates). On the other hand, governorates that did not witness armed confrontations showed an increase in coverage (eg, Raymah and Ibb), owing to an increase in their population because of displacement from less secure and confrontation-prone governorates.

Conclusions
This analysis demonstrated the marked negative impact of the 2015 war on immunization coverage, especially in the governorates that witnessed armed confrontations. This could put Yemen at more risk of VPD outbreaks and polio importation. Besides the ongoing efforts to stop the Yemeni war, strategies for more innovative vaccine delivery or provision and fulfilling the increasing demands are needed, especially in governorates with confrontations. Enhancing EPI performance through supportable investments in infrastructure that was destroyed by the war and providing decentralized funds are a prerequisite.