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Méthodes et indicateurs de suivi de la pêche et des peuplements de poissons dans les Aires Marines Protégées en Tunisie / Fish and fishing monitoring methods and indicators in Marine Protected Areas in TunisiaBen Lamine, Emna 05 December 2017 (has links)
Le suivi scientifique dans les AMPs est la clé pour le recueil information fiable dans les future AMPs de la Tunisie, où des restrictions d’usages et des plans de gestion sont en cours de mise en place. Cette étape cruciale le long des côtes tunisiennes viens avec le besoin en méthodes, métriques et indicateurs appropriés pour le suivi des paramètres utiles pour évaluer leurs efficacités. Le but de ce travail est de sélectionner, adapter, tester et proposer des méthodes et des indicateurs de suivi des assemblages de poissons et des activités de pêche, afin de proposer une stratégie de suivi pour quatre futures AMPs tunisiennes. La sélection des méthodes et des indicateurs de la bibliographie a été réalisée en fonction de leur faisabilité, de leur rentabilité et de leur adéquation avec les objectifs des futures des AMPs. Par conséquent, les données sur l'assemblage de poissons et les activités de pêche ont été recueillies en utilisant cinq méthodes : (1) Transects à largeur variable (TVW); (2) Fish Assemblage Sampling Technique (FAST); (3) Questionnaires et suivi des débarquements; (4) pêche expérimentale; (5) photo-surveillance. Les résultats des suivis réalisées entre 2014 et 2016, ont été pris en compte lors de proposition de la stratégie de suivi, notamment: (1) l'utilité d'adopter des modèles d'échantillonnage appropriés, BACI ("Before After Control Impact"), en utilisant la méthode standard des UVC, pour tester des hypothèses liées à l'efficacité des AMP futures, (2) les valeurs faibles de la biomasse dans toutes les AMPs étudiés par rapport à celles méditerranéennes (3) le potentiel des sciences participatives pour les suivi des assemblages de poissons en utilisant une méthode FAST, après avoir testé sa cohérence avec la méthode standard , (4) un pourcentage élevé de pratique de pêche illégale (pêcheurs récréatifs qui commercialisent leurs captures), (5) la compétition de la pêche récréative et illégale avec la pêche artisanale, sur les espèces vulnérables et de valeurs économiques élevées, et (6) des biomasses faibles, proportions de carnivores, grande proportion de poisson dans la capture des pêcheurs artisanaux, en utilisant la méthode de pêche expérimentale. Par conséquent, la dite stratégie proposée pour le suivi dans les futures AMPs tunisiennes repose sur la collaboration entre les scientifiques, les parties prenantes (pêcheurs, plongeurs récréatifs) et les gestionnaires, ce qui peut être utile pour assurer un certain niveau d'acceptation des AMPs, surtout quand il s’agit de créer un réseau tunisien d'AMPs / Scientific monitoring is the key to reliable information in Tunisian future MPAs, where management plans are being established. This crucial step comes with the need to choose appropriate methods, metrics and indicators for monitoring parameter that are important to assess MPAs effectivness. Therefore, the purpose of this manuscript is to select, adapt, test and propose fish assemblage and fishing monitoring methods and indicators in order to propose a monitoring strategy for four Tunisian future MPAs (locations). Selection of methods and indicators from literature was made according to their feasibility, cost-effectiveness and suitability with future MPAs objectives. Therefore, data on fish assemblage and fishing activities were collected using five methods: (1) Transects with variable width (TVW); (2) Fish Assemblage Sampling Technique (FAST); (3) Questionnaires and landing catch monitoring; (4) Experimental fishing; (5) photo-surveillance method. Results shows some highlights that were considered for proposing the monitoring strategy: (1) the usefulness of adopting appropriate sampling models, BACI ("Before After Control Impact"), using standard TVW, to test hypotheses related to the effectiveness of the future MPAs, (2) the relatively low values of biomass in all studied locations in comparison with other Mediterranean MPAs (3) the high potential of citizen science for fish monitoring in Tunisia using easy-to-use FAST method, after testing its coherence with standard TVW method, (4) a high percentage of illegal fishing practice (recreational fishers that commercialize their catch), in the studied locations, (5) the competition of recreational and illegal fishing with commercial-small scale (CSS) one, on vulnerable and high economic value species, and (6) low biomasses, carnivores proportions, large fish proportion in catch of CSS using experimental fishing method. Therefore, the proposed strategy for fish and fishing monitoring for Tunisian future MPAs is based on the collaboration between scientists, stakeholders (fishermen, recreational divers) and managers, which can be useful to implement high compliance and MPAs acceptance levels, especially when it comes to creating a future MPAs network.
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Historie a současnost rekreační matematiky a její vztah k matematice odborné / History and current state of recreational mathematics and its relation to serious mathematicsBártlová, Tereza January 2016 (has links)
Dissertation abstract The present thesis is devoted to the study of recreational mathematics, with a particular emphasis on its history, its relation to serious mathematics and its educational benefits. The thesis consists of five papers. In the first one we investigate the history of recreational mathematics. We focus on the development of mathematical problems throughout history, and we try to point out the people who had an important influence on the progress of recreational mathematics. The second article is dedicated to Edwin Abbott Abbott and his book called Flatland. It is one of the first popularizing books on geometry. In the third article we review one of the prominent personalities of recreational mathematics, Martin Gardner. The fourth article is in some sense a sequel to the third one. It deals with treachery of mathematical intuition and mathematical April Fool's hoaxes. The last article is devoted to the implementation recreational mathematics to education of students. 1
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Možnosti využití nízko objemového rezistentního tréninku pro ovlivnění funkčních a morfologických parametrů u rekreačních běžkyň / Effects of minimal dose of resistance training on body composition and running performance in female recreational runnersŠtohanzl, Michal January 2019 (has links)
Title: Effects of minimal dose of resistance training on body composition and running performance in female recreational runners Objective: The purpose of this study was to analyse the extent to which minimal dose resistance training would elicit improvements in running performance and body composition for female recreational runners. Methods: Forty-one female recreational runners were randomly assigned to one of three groups (endurance running [V] n=14; combined endurance running and resistance training program once [VR30] n=14 and twice a week [VR60] n=13, respectively). During the 10-week training program, the V group completed 3 hours of continuous endurance running per week; VR30 completed 2 ½ hours of continuous endurance running and 1 x 30 min of resistance training per week, while VR60 group completed 2 hours of continuous endurance running and 2x30 min of resistance training per week. Body composition (FM, FFM, ECM/BCM), standing long jump, running economy, ventilatory anaerobic threshold and maximal endurance performance characteristics were assessed using ANOVA with repeated measures. Body composition was assessed via whole-body bio impedance. Performance parameters were determined during running on a treadmill. Results: Thirty-one female recreational runners completed 10-week...
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Mytilus edulis as Bioindicator for Coastal Zone Environmental Assessment : A study of Kosterhavets Marine National ParkGarza Martínez, Paulina January 2009 (has links)
Mollusks growth is a very important and sensitive response to environmental stresses sincethey are good indicators of the available amount of contaminants in the water; reduced growth represents adverse environmental effects and possible effects on the population.Sweden has about 3,000 Natural Reserves and 28 National Parks. Kosterhavets is the first National Marine Park and it is located on the west coast of Sweden, it is also considered one of the most vulnerable areas since 6000 marine species can be found here and about200 are found nowhere else. It is not only a touristic destination; it is also a home and a work place to many people. The type of pollutants and environmental impacts that areproduced by recreation activities on marinas on such park depend very much on the amount of boats. Mytilus edulis has been widely used to monitor the biological effects of contamination by different ways, such as chemical analysis and biological responses. Themain goal of this project was to assess the status of three different marinas with high and low boat traffic and use the shell length of the blue mussel M. edulis as a potential bioindicator to detect effects from boating activities pressures. The main findings arising from this study are that the sizes of the mussels from the three areas with high boat traffic are significantly smaller than the area with little boat traffic. / <p>www.ima.kth.se</p>
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Finding a Way Out of the Weeds : The effect legalization of recreational marijuana has on unemployment and arrests – are there any racial disparities?Heyman, Maya January 2020 (has links)
The United States has long waged war against drugs resulting in, amongst other things, theworld’s largest prison population and costing society billions of dollars yearly. As a possible solution to the problem, legalization of recreational marijuana has emerged with Colorado as a pioneering state. The purpose of this study is to examine whether legalization has a casual effect on unemployment and arrests. This was done by performing difference-in-difference estimations with Colorado as the treatment group, Georgia and Arizona as the control group with unemployment and varying offenses as dependent variables. The results indicate legalization leading to a decrease in marijuana possession arrests. However, the non-drug related offenses and unemployment increased, albeit without statistical significance, which means that the null hypothesis cannot be rejected and leaves room for questioning of the results. This may be explained by there being more factors affecting those variables, Thus, using legalization as a mean to decrease unemployment and arrest rates can be challenged.
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A Comparison of Consumer's Surplus and Monopoly Revenue Estimates of Recreational Value for Two Utah Waterfowl MarshesBrink, C. Holden 01 May 1973 (has links)
Demand curves were estimated for waterfowl hunting and nonconsumptive recreational use from use rate and variable expenditure data collected at the Bear River Migratory Bird Refuge and the Farmington Bay Waterfowl Management Area during fiscal 1969. Consumer's surplus and monopoly revenue estimates were then derived from the demand functions. Adjusted estimates of consumer's surplus for waterfowl hunting amounted to $7,260 per year at Bear River and $11,400 per year at Farmington Bay. For nonconsumptive recreation annual consumer's surplus was estimated to be $18,700 at Bear River and $3,760 at Farmington Bay. Monopoly revenue estimates were between one-half and one-fourth the corresponding consumer's surplus estimates.
The capitalized value (at 8 percent interest) of predicted annual consumer's surplus for all recreation was $865,800 for Bear River and $299,000 for Farmington Boy. Capitalization of the corresponding monopoly revenue estimates gave $276,900 for Bear River and $92,100 for Farmington Bay. At 3 percent interest, the capitalized consumer's surplus values increase to $4,242,000 for Bear River and $1,184,000 for Farmington Buy, while those for monopoly revenue increase to $1,330,000 for Bear River and $350,000 for Farmington Bay.
The author believes that consumer's surplus estimates are more valuable than monopoly revenue estimates for comparison with other values included in the benefit/cost analysis of water development projects because the needed values include more than a non-discriminating monopolist can extract.
It will never be possible to make additive estimates of all of the relevant values of natural areas used for outdoor recreation. Allocation decisions must draw on several disciplines in addition to economics to determine where the balance will swing for the greatest net benefit to society, nevertheless, the author believes that exceptions exist where the native flora and fauna can be managed to attract visitors such than an area can remain in natural production in perpetuity and be competitive with potentially conflicting interests in terms of measurable economic values.
It is believed that future research should concentrate on high-value sites and be directed toward sensitivity analysis, the simultaneous evaluation of alternative uses, the influence of the travel-time variable, marginal resource values, and off-site benefits.
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Quantifying Riverbed Sediment Using Recreational-Grade Side Scan SonarHamill, Daniel 01 August 2017 (has links)
The size and organization of bed material, bed texture, is a fundamental attribute of channels and is one component of the physical habitat of aquatic ecosystems. Multiple discipline-specific definitions of texture exist and there is not a universally accepted metric(s) to quantify the spectrum of possible bed textures found in aquatic environments. Moreover, metrics to describe texture are strictly statistical. Recreational-grade side scan sonar systems now offer the possibility of imaging submerged riverbed sediment at resolutions potentially sufficient to identify subtle changes in bed texture with minimal cost,expertise in sonar, or logistical effort. However, inferring riverbed sediment from side scan sonar data is limited because recreational-grade systems were not designed for this purpose and methods to interpret the data have relied on manual and semi-automated routines. Visual interpretation of side scan sonar data is not practically applied to large volumes of data because it is labor intensive and lacks reproducibility. This thesis addresses current limitations associated with visual interpretation with two objectives: 1) objectively quantify side scan sonar imagery texture, and 2) develop an automated texture segmentation algorithm for broad-scale substrate characterization.
To address objective 1), I used a time series of imagery collected along a 1.6 km reach of the Colorado River in Marble Canyon, AZ. A statistically based texture analysis was performed on georeferenced side scan sonar imagery to identify objective metrics that could be used to discriminate different sediment types. A Grey Level Co-occurrence Matrix based texture analysis was found to successfully discriminate the textures associated with different sediment types. Texture varies significantly at the scale of ≈ 9 m2 on side scan sonar imagery on a regular 25 cm grid. A minimum of three and maximum of five distinct textures could be observed directly from side scan sonar imagery. To address objective 2), linear least squares and a Gaussian mixture modeling approach were developed and tested. Both sediment classification methods were found to successfully classify heterogeneous riverbeds into homogeneous patches of sand, gravel, and boulders. Gaussian mixture models outperformed the least squares models because they classified gravel with the highest accuracies.Additionally, substrate maps derived from a Gaussian modeling approach were found to be able to better estimate reach averaged proportions of different sediments types when they were compared to similar maps derived from multibeam sonar.
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Areál Hornychovice - Štramberk / Area Hornychovice - ŠtramberkKříž, Marek January 2017 (has links)
It is a project of a complex consisting of an apartment building for the elderly, supplemented by a commercial area of the restaurant and the adjoining park area with sports areas for children's, multipurpose, workout and for seniors focused playgrounds. In the immediate vicinity are new family houses and recreational objects of a garden character. The area is a transition between the historic center and the free outpost of the village. The proposed buildings reflect their tradition of folk architecture, preserving the "genius loci" of the village and beyond the edict of the monumental institute.
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Hole-in-one Experiences : Evaluating the Impact of Experiential MarketingDimensions on Customer Engagement and LoyaltyWithin the Golf Course IndustrySporn, Zachary January 2023 (has links)
Background: The leisure and recreational sports market, a multibillion-dollar industry, isexperiencing a transformative shift. With increased competition and changing consumerdemographics, businesses and facilities are seeking innovative strategies to ensure customerretention and maintain profitability. Golf, as a key player in this sector, has seen a resurgencein popularity due to its adaptability during social distancing measures. Amid this growth, theindustry faces challenges to engage and retain a new demographic of golfers. To address this,experiential marketing, emphasizing immersive and interactive customer experiences, hasbecome increasingly critical. This approach focuses on creating memorable experiences ratherthan simply providing product or service information. Purpose: The aim of this study is to investigate the influence of experiential marketing oncustomer engagement and loyalty within the golf industry, specifically analyzing howdifferent golf course dimensions affect consumers' emotional responses and willingness toreturn. This research will provide valuable insights for the development of effectiveexperiential marketing strategies in participation sports. Method: Ontology - Constructivism; Epistemology - Interpretivism; Methodology - Multiplecase study; Data collection - 10 semi-structured interviews; Sampling - Criterion sampling,which followed the criteria: (1) recent experience, participants must have played at both golfcourses during the 2023 season, ensuring that their experiences and feedback are current andrelevant to the present-day amenities offered by the clubs, while also minimizing theinfluence of any seasonal effects. (2) geographic location, participants must reside within theJönköping region, as this helps ensure that their experiences are not biased due to traveling toa new region or country, which could potentially lead to biased conclusions. (3) time played,the golfers must have completed at least 18 holes of golf as to ensure that they get the fullexperience at both of the selected golf courses.; Data Analysis – Content Analysis (creation ofa tree-diagram based on quotes, sub-categories, generic categories and main categories) Conclusion: This research offers insights into how experiential marketing dimensions likeamenities, atmosphere, and customer service influence golfer satisfaction and returnintentions. Key findings indicate that these elements elicit strong emotional responses, drivinggolfer loyalty. A holistic approach that addresses both tangible and intangible elementsenhance overall satisfaction. This study underlines the need for continued research into thesefactors to support the development of effective strategies for the golf industry.
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Community utilization of Protestant public school facilities for recreational purposes in Metropolitan Montreal.Benzon, Ralph. January 1968 (has links)
No description available.
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