Properties of abundance indices obtained from acoustic data collected by inshore herring gillnet boats

2001 ◽  
Vol 58 (12) ◽  
pp. 2502-2512 ◽  
Author(s):  
Ross R Claytor ◽  
Jacques Allard

Acoustic data collection during fishing activities can be used to obtain an abundance index. A simulation, calibrated against an experiment conducted during the Pictou, Nova Scotia, Canada, 1997 inshore herring fishery, is used to understand how survey design affects the properties of abundance indices derived from these data. Two fishing survey protocols and random and systematic transect surveys were simulated. During the complete fishing survey protocol, the simulated survey boat collected acoustic data before and after a management-imposed nightly boat limit was caught. In contrast, during the incomplete fishing survey protocol, data collection was terminated when the boat limit was caught. Properties of abundance indices derived from the fishing and transect surveys were examined over five levels of fish dispersion, two conditions of fish mobility, and in the presence and absence of concurrent fleet fishing. All indices were subject to change caused by changing fish dispersion, but only the incomplete fishing survey index was highly unsatisfactory. The complete fishing survey index is more susceptible to change than the transect indices but displays a lower sampling variation across conditions than the transect indices. We conclude that the complete fishing survey index is a viable alternative to the transect indices.

2018 ◽  
Vol 1 ◽  
pp. 107
Author(s):  
Adi Heryadi ◽  
Evianawati Evianawati

This study aims to prove whether transformational leadership training is effective for building anti-corruption attitudes of villages in Kebonharjo village, subdistrict Samigaluh Kulonprogo. This research is an experimental research with one group pre and posttest design.Subject design is 17 people from village of 21 candidates registered. Measuring tool used in this research is the scale of anti-corruption perception made by the researcher referring to the 9 anti-corruption values with the value of reliability coefficient of 0.871. The module used as an intervention made by the researcher refers to the transformational leadership dimension (Bass, 1990). The data collected is analyzed by statistical analysis of different test Paired Sample Test. Initial data collection results obtained sign value of 0.770 which means> 0.05 or no significant difference between anti-corruption perception score between before and after training. After a period of less than 1 (one) month then conducted again the measurement of follow-up of the study subjects in the measurement again using the scale of anti-corruption perception. The results of the second data collection were analysed with Paired Samples Test and obtained the value of 0.623 sign meaning p> 0.05 or no significant difference between post test data with follow-up data so that the hypothesis of this study was rejected.


2008 ◽  
Vol 43 (2-3) ◽  
pp. 85-98 ◽  
Author(s):  
Joshua R. Thienpont ◽  
Brian K. Ginn ◽  
Brian F. Cumming ◽  
John P. Smol

Abstract Paleolimnological approaches using sedimentary diatom assemblages were used to assess water quality changes over the last approximately 200 years in three lakes from King's County, Nova Scotia. In particular, the role of recent shoreline development in accelerating eutrophication in these systems was assessed. Sediment cores collected from each lake were analyzed for their diatom assemblages at approximately 5-year intervals, as determined by 210Pb dating. Analyses showed that each system has changed, but tracked different ecosystem changes. Tupper and George lakes recorded shifts, which are likely primarily related to climatic warming, with diatom assemblages changing from a preindustrial dominance by Aulacoseira spp. to present-day dominance by Cyclotella stelligera. In addition to the recent climatic-related changes, further diatom changes in the Tupper Lake core between approximately 1820 and 1970 were coincident with watershed disturbances (farming, forestry, and construction of hydroelectric power infrastructure). Black River Lake has recorded an increase in diatom-inferred total phosphorus since about 1950, likely due to impoundment of the Black River system for hydroelectric generation and subsequent changes in land runoff. Before-and-after (i.e., top-bottom) sediment analyses of six other lakes from King's County provided further evidence that the region is being influenced by climatic change (decreases in Aulacoseira spp., increases in planktonic diatom taxa), as well as showing other environmental stressors (e.g., acidification). However, we recorded no marked increase in diatom-inferred nutrient levels coincident with shoreline cottage development in any of the nine study lakes. Paleolimnological studies such as these allow lake managers to place the current limnological conditions into a long-term context, and thereby provide important background data for effective lake management.


2021 ◽  
pp. 0160323X2110092
Author(s):  
Laura A. Reese ◽  
Xiaomeng Li

This research focuses on change within informal service provision networks, specifically examining the impact that changes within a key organization can have on the larger network. Employing a before and after survey design with a treatment at the midpoint and participant observation, it asks: What is the impact of a major change within one organization on the larger external network? What is the nature of the organizational ties? and, How do political factors exogenous to the network impact the network evolution process? The findings suggest that internal change within a focal actor can have ripple effects throughout the network increasing density. Public service provision at the local level can be enhanced through an increase in partnerships between the public and nonprofit sectors. However, network evolution can be limited by the larger political environment and lack of a coordinating role on the part of local government.


2021 ◽  
pp. 105566562110217
Author(s):  
Alexis C. Wood ◽  
C. Alejandra Garcia de Mitchell ◽  
Ruchi Kaushik

Objective: Identify factors contributing to time a family spends in a Multidisciplinary Craniofacial Team Clinic (MDCT) and implement an intervention to reduce this time. Design: Interventional: a restructuring of clinics to serve those patients requiring fewer provider encounters separately. Setting: An American Cleft Palate-Craniofacial Association-accredited MDCT in an academic children’s hospital. Patients/Participants: One hundred sixty-seven patients with craniofacial diagnoses. Interventions: Time data were tabulated over ∼2 years. Following 9 months of data collection, patients requiring fewer provider encounters were scheduled to a separate clinic serving children with craniosynostosis, and data were collected in the same fashion for another 14 months. Main Outcome Measures: Principal outcome measures included total visit time and proportion of the visit spent without a provider in the room before and after clinic restructuring. Results: The average time spent by family in a clinic session was 161.53 minutes, of which 64.3% was spent without a provider in the room. Prior to clinic restructuring, a greater number of provider encounters was inversely associated with percentage of time spent without a provider ( P < .001). Upon identifying this predictor, scheduling patients who needed fewer provider encounters to a Craniosynostosis Clinic session resulted in reduction in absolute and percentage of time spent without a provider ( P < .001). Conclusions: The number of provider encounters is a significant predictor of the proportion of a clinic visit spent without a provider. Clinic restructuring to remove patient visits that comprise fewer provider encounters resulted in a greater percentage of time spent with a provider in an MDCT.


2021 ◽  
pp. 089719002110184
Author(s):  
Kimberly L. Barefield ◽  
Caroline Champion ◽  
Lucy Yang ◽  
Brent Rollins

Introduction: Competent pharmacy practice requires the ability to critically evaluate the medical literature and communicate pharmacotherapy information and recommendations to healthcare practitioners. Given the limited research on how these skills are taught, a seminar course in the third year of the pharmacy curriculum was designed to strengthen these skills and abilities. Methods: This was a prospective, pre- and post-cohort survey design. Students were informed of the study’s intent with participation being voluntary and not affecting their course grade. Students received the same survey at the beginning and end of the semester. The 20-question survey assessed self-perceived confidence in the domains of communication and literature evaluation using a 5-point, Likert-type Strongly Disagree-Strongly Agree Scale. Demographic information and students’ previous pharmacy work and internship experience were collected as a part of the survey. Descriptive statistics and Student’s t-test were used to assess the research question and comparisons of student demographics. Results: Sixty-eight of a possible 91 students (75% response rate) completed both the pre- and post-survey. There was no statistically significant differences between any of the measured demographics. Overall, students slightly agreed they were confident in their communication and literature evaluation skills in the pre-course evaluation, with communicating drug interactions as the least confident area. Post-course, students were significantly more confident in all but 5 of 20 measured areas. Conclusion: The Seminar course resulted in a positive change in students’ perception of confidence to communicate with healthcare professionals and ability to evaluate drug literature.


2021 ◽  
Vol 7 ◽  
pp. 233372142199932
Author(s):  
Alexander Seifert

The COVID-19 pandemic has created a pattern of physical distancing worldwide, particularly for adults aged 65+. Such distancing can evoke subjective feelings of negative self-perception of aging (SPA) among older adults, but how this pandemic has influenced such SPA is not yet known. This study, therefore, explored SPA at different time phases of the COVID-19 pandemic to explain the pandemic’s impact on SPA among older adults. The analysis employed a sample of 1,990 community-dwelling older adults aged 65 to 95 (mean age = 72.74 years; 43% female) in Switzerland. Data collection from different older adults within one study occurred both before and after Switzerland’s first confirmed COVID-19 case. The descriptive analysis revealed that negative SPA increased, and positive SPA decreased, after the Swiss government recommended physical distancing. After the Federal Council decided to ease these measures, negative SPA slightly decreased and positive SPA increased. According to the multivariate analysis, individuals interviewed after the lockdown were more likely to report greater levels of negative SPA and lower levels of positive SPA. Age, income, and living alone also correlated with SPA. The results suggest that the pandemic has affected older adults’ subjective views of their own aging, and these findings help illustrate the pandemic’s outcomes.


2015 ◽  
Author(s):  
Ethan Linck ◽  
Eli S Bridge ◽  
Jonah M Duckles ◽  
Adolfo G Navarro-Sigüenza ◽  
Sievert Rohwer

Natural history museum collections (NHCs) represent a rich and largely untapped source of data on demography and population movements. NHC specimen records can be corrected to a crude measure of collecting effort and reflect relative population densities with a method known as abundance indices. We plot abundance index values from georeferenced NHC data in a 12-month series for the new world migratory passerine Passerina ciris across its molting and wintering range in Mexico and Central America. We illustrate a statistically significant change in abundance index values across regions and months that suggests a quasi-circular movement around its non-breeding range, and use enhanced vegetation index (EVI) analysis of remote sensing plots to demonstrate non-random association of specimen record density with areas of high primary productivity. We demonstrate how abundance indices from NHC specimen records can be applied to infer previously unknown migratory behavior, and be integrated with remote sensing data to allow for a deeper understanding of demography and behavioral ecology across space and time.


2020 ◽  
Vol 3 (12) ◽  
pp. 149-154
Author(s):  
Obateru, Oluwatoyin Tolu

This article highlights how English language teachers professional development and training programmes fosters teachers’ professional competences in the teaching of the subject. English Language is vital in developing communication and social skills in learners as it does empower learners to compete favorably with their peers around the world. The ex-post factor approach of the survey design was adopted in the study. A random sampling technique was used to select twenty primary schools in Oyo state, Nigeria, with 168 English teachers who were currently undergoing the SUBEB/UBEC teacher professional development programme (2018). Two instruments: Teacher Teaching Competence Scale (TTCS) with Cronbach’s Alpha reliability coefficient of 0.68 and the Teachers Checklist Observation Scale (TCOS) with Scott Pi reliability coefficient of 0.71 were used for data collection. The data collection lasted for a period of fourteen weeks. Data collected were analysed using descriptive statistics and correlation at 0.05 level of significance. Results revealed that teacher’ attendance and exposure to a professional development and training programme; does enhance their professional teaching competences. It is therefore expedient that stakeholders in the education sector; especially governmental agencies, sponsor and encourage practicing primary teachers in attending and participating in professional development programmes; incentives should also be given to these teachers. This will go a long way at ensuring that these teachers look forward to attending such programmes at any time in the future


2015 ◽  
Vol 9 (1) ◽  
pp. 25-31
Author(s):  
Hana Kabešová ◽  
Štefan Balkó

The aim of the study was to assess the effect of static and dynamic way of stretching the hamstrings in probands studying physical education and sport at UJEP. Flexibility was diagnosed through a modified Lassegueovy test (SLR). In the present study, we evaluated the differences between the angles of the back of the thigh in the dominant lower limb before and after the application of static and dynamic stretching exercises performed using SLR push or pull. For data collection were used video (2D), which was developed software Dartfish Team Pro Data. With this program were converted to values of the angle distance in centimeters and evaluated. The results showed that there were no significant differences in ROM when exposed to static and dynamic stretching method. Significant differences, however, showed between the initial and final angle dominant lower limb when exposed to dynamic stretching, where the movement was executed swing.


Author(s):  
Sacharissa Zerlina Tsarwah Thirafi ◽  
Triadi Putra Paladan ◽  
Bonfilio Neltio Ariobimo ◽  
Barizatul Husniyah ◽  
Monica Tiara Arum Kinanthi ◽  
...  

The role of the community is an essential part to cut down the COVID-19 chain transmission, a current world pandemic. Knowledge determines a person's healthy behavior that can prevent transmission of COVID-19. This research’s goal is to analyze the effect of health promotion via telemedicine on increasing knowledge about COVID-19 prevention in the productive-age population in Indonesia. This study used one group pretest-posttest design and accidental sampling method involving 146 respondents based on the inclusion criteria. The data collection method was carried out by using a questionnaire containing simple and general questions related to COVID-19 that tested subjects before and after telemedicine health promotion. Based on the assessment of the questionnaire through pretest and posttest, there was an increase in the average knowledge after being given health education with telemedicine with p<0.001 (CI 95%). This study shows that telemedicine could significantly increase average knowledge about COVID-19 prevention in the productive-age population in Indonesia.


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