Do Current Measures of Dimensions of Source Credibility Produce Stable Outcomes in Replicated Tests?

1995 ◽  
Vol 81 (2) ◽  
pp. 675-687 ◽  
Author(s):  
F. C. Powell ◽  
J. W. Wanzenried
Keyword(s):  
University Students ◽  
Source Credibility ◽  
Hillary Clinton ◽  
George Bush ◽  
Credibility Scale ◽  
One Year ◽  
The Stability

Over a period of one year, data were obtained from four groups of university students to compare the stability of scores on the McCroskey and Jenson Source Credibility Scale and the Leathers Personal Credibility Scale in repeated tests. Using pre- and posttest scores, perceptions of President Clinton were obtained at four intersections while perceptions of Hillary Clinton, Jerry Brown, George Bush, and Ross Perot were obtained on a single date. The two scales used in the test yield approximate explanations of variance and coefficients a across the 16 analyses. The results suggest that current conceptualization and measurement of source credibility do not provide consistent dimensions on repeated tests.

Source Credibility and Dimensional Stability: A Test of the Leathers Personal Credibility Scale Using Perceptions of Three Presidential Candidates

1993 ◽  
Vol 77 (2) ◽  
pp. 403-406 ◽  
Author(s):  
J. W. Wanzenried ◽  
F. C. Powell
Keyword(s):  
Factor Analysis ◽  
University Students ◽  
Dimensional Stability ◽  
Source Credibility ◽  
Two Dimensions ◽  
Presidential Candidates ◽  
Credibility Scale ◽  
Presidential Debate

A sample of 407 university students completed the Leathers Personal Credibility Scale on each of the three candidates for President after the final 1992 televised presidential debate. A factor analysis of respondents' perceptions yielded two dimensions of personal credibility, trustworthiness and dynamism. The personal credibility dimensions were remarkably similar for each of the three candidates.

Evaluation of Mandibular Arch Width Changes following Fixed Retention in Post Orthodontic Patients - a Randomized Clinical Trial

2020 ◽  
Author(s):  
Nasreen Iqbal Nagani
Keyword(s):  
Stainless Steel ◽  
Steel Wire ◽  
P Value ◽  
Chi Square ◽  
Mandibular Arch ◽  
Arch Width ◽  
Orthodontic Patients ◽  
Mean Differences ◽  
One Year ◽  
The Stability

Background: Retention is an integral phase in which teeth are maintained in their newly adapted position for which retainers are inserted. Retainers are generally of two types: removable and fixed. Fixed retainers are indicated in the mandibular arch for an indefinite period specifically in the non-extraction cases. Changes in intercanine and intermolar widths are valuable parameters to evaluate the stability. The objectives of this study were to assess and compare the mandibular intercanine and intermolar width changes following orthodontic treatment after insertion of two types of fixed lingual retainers for one year. Methods: Total 54 subjects were recruited in which two types of fixed lingual retainers were inserted in the mandibular arch randomly. Intercanine and intermolar arch widths were measured by digital caliper of 0.01 mm accuracy. Data was analyzed by using Statistical Package of Social Sciences (SPSS V-21). Chi-square and independent t tests were used to compare baseline characteristics. Intercanine and intermolar widths were assessed and compared using independent t test, p-value ≤ 0.05 is considered as statistically significant. Results: Intercanine width increased from baseline to T4 in both retainers. When mean differences of intercanine width were compared between two retainers significant differences were observed at T1, T2, T3 and T4 with significant p-values (< 0.05) and increased intercanine width with multistranded stainless steel wire (MSW) retainers. Conclusion: Mandibular intercanine width increases significantly in post retention phase with multistranded stainless steel retainers. Thus, fiber reinforced composite retainers are more effective in preserving the arch width changes.

scholarly journals Comparison between selective caudal fixed screw construct and all variable screw construct in anterior cervical discectomy and fusion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jae Jun Yang ◽  
Sehan Park ◽  
Seongyun Park
Keyword(s):  
Fusion Rate ◽  
Anterior Cervical Discectomy ◽  
Disc Space ◽  
Cervical Discectomy ◽  
Locking Mechanism ◽  
Adjacent Disc ◽  
One Year ◽  
The Stability ◽  
Retrospective Comparative Study ◽  
Caudal Level

AbstractThis retrospective comparative study aimed to compare the efficacy of selective caudal fixed screw constructs with all variable screw constructs in anterior cervical discectomy and fusion (ACDF). Thirty-five patients who underwent surgery using selective caudal fixed screw construct (SF group) were compared with 44 patients who underwent surgery using all variable constructs (AV group). The fusion rate, subsidence, adjacent level ossification development (ALOD), adjacent segmental disease (ASD), and plate-adjacent disc space distance were assessed. The one-year fusion rates assessed by computed tomography bone bridging and interspinous motion as well as the significant subsidence rate did not differ significantly between the AV and SF groups. The ALOD and ASD rates and plate-adjacent disc space distances did not significantly differ between the two groups at both the cranial and caudal adjacent levels. The number of operated levels was significantly associated with pseudarthrosis in the logistic regression analysis. The stability provided by the locking mechanism of the fixed screw did not lead to an increased fusion rate at the caudal level. Therefore, the screw type should be selected based on individual patient’s anatomy and surgeon’s experience without concern for increased complications caused by screw type.

The Culture and Personal Disposal Practices of University Students: A Qualitative Study in Brazil and Germany

2021 ◽  
Vol 15 (1) ◽  
pp. 51-71
Author(s):  
Iveltyma Roosemalen Passos Ibiapina ◽  
Aurio Leocadio ◽  
Jose Carlos Lazaro ◽  
Claudia Buhamra Abreu Romero
Keyword(s):  
University Students ◽  
Material Culture ◽  
Waste Disposal ◽  
Cultural Difference ◽  
General View ◽  
New Public ◽  
Primary Practice ◽  
One Year ◽  
Waste Separation ◽  
Cultural Components

This study aimed to investigate the relationship between cultural components and municipal solid waste (MSW) disposal individual practices in the context of Brazilian and German university students. To achieve this goal, we chose to conduct qualitative research with ethnographic inspiration, exploratory and descriptive nature. For one year, the authors collected data through participant and non-participant observations, interviews and photographs from both countries. The results showed that waste disposal is a constant concern in Germany. Waste separation for recycling is cultural and is the primary waste disposal practice in the country. In Brazil, the primary practice is to dispose of all waste in just one bin. Several elements of the cultural components are involved in these practices, revealing a significant sustainable cultural difference between the two countries. One of the limitations of the study is Brazil itself. Brazil is a continental and multi-cultural country. The results present a perceived country general view; but maybe in other cities inside Brazil, some differences could be present. As an empirical contribution, the study presents a lack of public policy and gives suggestions to improve the structure (material culture) and communication (and language) of the practices through actions. These actions can be the implementation of the selective collection in the city, improved enforcement of laws or even new public policies aimed at waste management. The originality of the article consists in investigating and comparing the disposal practices of MSW of Brazilian and German students in the light of culture. This study innovates bringing an empirical analysis of cultural components little studied.

The stability between two HIV-1 RNA measurements one year apart and the relationship with HIV subtype in rural Uganda

2001 ◽  
Vol 12 (2) ◽  
pp. 116-121 ◽  
Author(s):  
Dilys Morgan ◽  
Pontiano Kaleebu ◽  
Jimmy Whitworth ◽  
David Yirrell ◽  
Alleluiah Rutebemberwa ◽  
...  
Keyword(s):  
One Year ◽  
The Stability ◽  
The Relationship ◽  
Hiv 1

scholarly journals Comparison Between Selective Caudal Fixed Screw Construct and All Variable Screw Construct in Anterior Cervical Discectomy and Fusion

2020 ◽  
Author(s):  
Jae Jun Yang ◽  
Sehan Park ◽  
Seongyun Park
Keyword(s):  
Fusion Rate ◽  
Anterior Cervical Discectomy ◽  
Disc Space ◽  
Cervical Discectomy ◽  
Locking Mechanism ◽  
Adjacent Disc ◽  
One Year ◽  
The Stability ◽  
Retrospective Comparative Study ◽  
Caudal Level

Abstract Objectives: This retrospective comparative study aimed to compare the efficacy of selective caudal fixed screw constructs with all variable screw constructs in anterior cervical discectomy and fusion (ACDF). Methods: Thirty-five patients who underwent surgery using selective caudal fixed screw construct (SF group) were compared with 44 patients who underwent surgery using all variable constructs (AV group). The fusion rate, subsidence, adjacent level ossification development (ALOD), adjacent segmental disease (ASD), and plate-adjacent disc space distance were assessed.Results: The one-year fusion rates assessed by computed tomography bone bridging and interspinous motion as well as the significant subsidence rate did not differ significantly between the AV and SF groups. The ALOD and ASD rates and plate-adjacent disc space distances did not significantly differ between the two groups at both the cranial and caudal adjacent levels. The number of operated levels was significantly associated with pseudarthrosis in the logistic regression analysis.Conclusion: The stability provided by the locking mechanism of the fixed screw did not lead to an increased fusion rate at the caudal level. Therefore, the screw type should be selected based on individual patient’s anatomy and surgeon’s experience without concern for increased complications caused by screw type.

scholarly journals Mineralogical response of the Mediterranean crustose coralline alga <i>Lithophyllum cabiochae</i> to near-future ocean acidification and warming

2016 ◽  
Author(s):  
Merinda C. Nash ◽  
Sophie Martin ◽  
Jean-Pierre Gattuso
Keyword(s):  
Ocean Acidification ◽  
Crustose Coralline Alga ◽  
Coralline Algae ◽  
Coralline Alga ◽  
Magnesium Calcite ◽  
The Mediterranean ◽  
One Year ◽  
The Stability ◽  
Strong Control ◽  
Near Future

Abstract. Red calcareous coralline algae are thought to be among organisms the most vulnerable to ocean acidification due to the high solubility of their magnesium calcite skeleton. Although, skeletal mineralogy is proposed to change as CO2 and temperature continues rising, there is currently very little information available on the response of coralline algal carbonate mineralogy to near-future changes in pCO2 and temperature. Here we present results from a one-year controlled laboratory experiment to test mineralogical responses to pCO2 and temperature in the Mediterranean crustose coralline alga (CCA) Lithophyllum cabiochae. Our results show that Mg incorporation is mainly constrained by temperature (+1 mol% MgCO3 for an increase of 3 °C) and there was no response to pCO2. This suggests that L. cabiochae thalli have the ability to buffer calcifying medium against ocean acidification, enabling them to continue to deposit Mg-calcite with a significant mol% MgCO3 under elevated pCO2. Analyses of CCA dissolution chips showed a decrease in Mg content after 1 year for all treatments but this was not affected by pCO2 nor by temperature. Our findings suggest that biological processes exert a strong control on calcification on Mg-calcite and that CCA may be more resilient under rising CO2 than previously thought. However, previously demonstrated increased skeletal dissolution with ocean acidification will still have major consequences for the stability and maintenance of Mediterranean coralligenous habitats.

scholarly journals Co-Amorphous Simvastatin-Nifedipine with Enhanced Solubility for Possible Use in Combination Therapy of Hypertension and Hypercholesterolemia

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2161 ◽  
Author(s):  
Cecilia Martínez-Jiménez ◽  
Jorge Cruz-Angeles ◽  
Marcelo Videa ◽  
Luz Martínez
Keyword(s):  
Combination Therapy ◽  
Amorphous State ◽  
Active Pharmaceutical Ingredient ◽  
Molar Ratio ◽  
Amorphous System ◽  
Enhanced Solubility ◽  
Significant Area ◽  
One Year ◽  
The Stability ◽  
Therapy Of Hypertension

The high index of simultaneous incidence of hypertension and hypercholesterolemia in the population of many countries demands the preparation of more efficient drugs. Therefore, there is a significant area of opportunity to provide as many alternatives as possible to treat these illnesses. Taking advantage of the solubility enhancement that can be achieved when an active pharmaceutical ingredient (API) is obtained and stabilized in its amorphous state, in the present work, new drug-drug co-amorphous formulations (Simvastatin SIM- Nifedipine NIF) with enhanced solubility and stability were prepared and characterized. Results show that the co-amorphous system (molar ratio 1:1) is more soluble than the pure commercial APIs studied separately. Aqueous dissolution profiles showed increments of solubility of 3.7 and 1.7 times for SIM and NIF, correspondingly, in the co-amorphous system. The new co-amorphous formulations, monitored in time, (molar fractions 0.3, 0.5 and 0.7 of SIM) remained stable in the amorphous state for more than one year when stored at room temperature and did not show any signs of crystallization when re-heating. Inspection on the remainder of a sample after six hours of dissolution showed no recrystallization, confirming the stability of co-amorphous system. The enhanced solubility of the co-amorphous formulations makes them promising for simultaneously targeting of hypertension and hypercholesterolemia through combination therapy.

Global and temporal state of the human gut microbiome in health and disease

2021 ◽  
Author(s):  
Saeed Shoaie ◽  
Sunjae Lee ◽  
Mathieu Almeida ◽  
Gholamreza Bidkhori ◽  
Nicolas Pons ◽  
...  
Keyword(s):  
Gut Microbiome ◽  
Integrative Analysis ◽  
Human Gut ◽  
Human Gut Microbiome ◽  
Health And Disease ◽  
One Year ◽  
The Stability ◽  
Clinical Phenotyping ◽  
Sampling Times

Abstract The role of gut microbiota in humans is of great interest, and metagenomics provided the possibilities for extensively analysing bacterial diversity in health and disease. Here we explored the human gut microbiome samples across 19 countries, performing compositional, functional and integrative analysis. To complement these data and analyse the stability of the microbiome, we followed 86 healthy Swedish individuals over one year, with four sampling times and extensive clinical phenotyping. The integrative analysis of temporal microbiome changes shows the existence of two types of species with a tendency to vary in abundance with time, here called outflow and inflow species. Importantly, the former tends to be enriched in disease, while the latter is enriched in health. We suggest that the decrease of disease-associated outflow and the increase of health-associated inflow species with time may be a fundamental albeit previously unrecognized aspect of the homeostasis maintenance in a healthy microbiome.

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