Bibliografie tematiche / Public Beach

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Letteratura scientifica selezionata sul tema "Public Beach"

Autore: Grafiati
Pubblicato: 29 luglio 2024
Ultima modifica: 31 luglio 2024

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Articoli di riviste sul tema "Public Beach"

1

Kim, Jinwon, Seong Ok Lyu e HakJun Song. "Environmental Justice and Public Beach Access". City & Community 18, n. 1 (marzo 2019): 49–70. http://dx.doi.org/10.1111/cico.12372.

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Abstract (sommario):
Beaches are an important recreational setting due to their provision of ideal open spaces for diverse water– and land–based recreation opportunities. Despite the importance of assessing the environmental justice of public beach access, few empirical studies have been conducted in community recreation. Using an environmental justice framework, this study examined whether inequities exist for certain racial/ethnic and socioeconomic groups with respect to the distribution of public beach access in the Detroit Metropolitan Area. Results indicated that inequitable public beach access is associated with population density, median housing value, elderly population, and nonvehicle ownership. Such findings can help public leisure agencies to assess environmental justice, a first step in developing more effective community recreation planning and management policies. Study implications, limitations, and recommendations for further research are also discussed.
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2

Hartley, John, e Joshua Green. "The public sphere on the beach". European Journal of Cultural Studies 9, n. 3 (agosto 2006): 341–62. http://dx.doi.org/10.1177/1367549406066077.

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3

Pickett, Ellis. "Severance v. Your Texas Public Beach". Texas Wesleyan Law Review 18, n. 2 (dicembre 2011): 275–79. http://dx.doi.org/10.37419/twlr.v18.i2.5.

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Abstract (sommario):
Coastlines, like riverbanks, are dynamic. They continually move, usually imperceptibly, but in storm events they can move a great distance. This movement affects both private and public property rights. The State owns "submerged lands," wherever they happen to be at the time.' In legal documents in Texas, terms such as "along the river" and "with the meanders of the river" describe property boundaries. The difference between Gulf of Mexico and riverfront property is gulf beaches are open to the public, whereas the sand along rivers is private property. There is no Open Beaches Act for rivers. Owners of beachfront property acknowledge the fact that the shore moves at the whim of nature. It has long been established that the coastline is dynamic; therefore, only an easement that moves with the shore is workable.
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4

SHIVLANI, MANOJ P., DAVID LETSON e MELISSA THEIS. "Visitor Preferences for Public Beach Amenities and Beach Restoration in South Florida". Coastal Management 31, n. 4 (ottobre 2003): 367–85. http://dx.doi.org/10.1080/08920750390232974.

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Schlichting, Kara Murphy. "The Narrowing of Broad Beach". Pacific Historical Review 92, n. 2 (2023): 199–226. http://dx.doi.org/10.1525/phr.2023.92.2.199.

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Abstract (sommario):
Waterfronts represent some of Southern California’s most valuable real estate and most sought-after recreation destinations. Despite Los Angeles County’s reputation for large public beaches, privatization and the discouragement of public use came to characterize Malibu’s Broad Beach by the end of the twentieth century. In the same era, erosion reshaped the boundary between public and private property on the beach. Residents called for permanent structures to stabilize the coast. Public beach activists rejected homeowners’ claims that beach armoring was in the public’s interest. Activists demanded state authorities expand access opportunities and protect public recreation instead of protecting beachfront mansions. As coastal erosion altered the parameters of public access, environmental change raised the stakes regarding state and federal authorities’ responsibilities to maintain beaches. At the turn of the twenty-first century, the longstanding challenge to public access in this exclusive Malibu enclave collided with the unfolding climate crisis, highlighting the entwined nature of environmental risk and real estate development on the beach.
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Permanasuri, Ni Putu Diah Agustin. "THE PUBLIC SPACE QUALITY OF LEBIH BEACH GIANYAR: REVIEW OF SOCIAL AND ECONOMIC FUNCTION". BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan 8, n. 2 (21 dicembre 2020): 63–69. http://dx.doi.org/10.37304/balanga.v8i2.2001.

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Abstract (sommario):
Public space function such as a place for interaction people, social activity, and fulfil of economic needs and also recreation. Public space must be exist even at big city either small city. Public space quality based on impact of abration are physical and non physical aspect. Physical aspect including facility of the area, public space condition, and design. Non physical aspect including responsif aspect, democracy, meaningful and accesibility. Lebih beach as a public space located at Gianyar regency, has intetresting area for people around the beach and also another regency. At this beach, many activity is held, such as social, economic activity, family entertainmet and also fish culinary. At this time, there is many change of Lebih beach because the impact of abration. Decrease of sapce between land and shoreline. This research will explain how the change of Lebih beach based on economic and social function because both of them is the dominant activity at Lebih beach. This is a descriptive qualitative research, with direct interview with the people at beach. The result is quality aspect of social function are democracy and meaningful aspect, and economic aspect are democracy, meaningful and quality of area.
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7

Heasley, Cole, Johanna Sanchez, Ian Young e Jordan Tustin. "Beach water monitoring practices and challenges in Ontario Public Health units". Environmental Health Review 65, n. 1 (aprile 2022): 17–24. http://dx.doi.org/10.5864/d2022-003.

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Abstract (sommario):
Public Health Units (PHUs) in Ontario regularly monitor public beaches for E. coli levels as an indicator of the risk of recreational water-induced illness. Provincial guidance for beach water monitoring allows local flexibility in the beach monitoring process. We conducted a survey of public health professionals responsible for beach water management in Ontario PHUs to determine how monitoring practices differ across jurisdictions. We obtained data from 22 of the 29 PHUs that conduct beach water monitoring. Six health units reported meeting guidelines (27%) and four reported meeting historical water quality (18%) were important factors in deciding sampling frequency. Major challenges and limitations in monitoring that arose from the lag time between sampling and obtaining results were reported by 12 (55%). Predictive modelling has been trialled eight times across the province with varied results. This study provides an overview on the current state and future avenues for beach water monitoring in Ontario.
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Wijaya, Christy Regina, Bagja Waluya e Heri Puspito Diyah Setyorini. "PENGARUH PROGRAM MARKETING PUBLIC RELATIONS TERHADAP KEPUTUSAN BERKUNJUNG DI PANTAI PANGANDARAN (Survei pada Wisatawan yang Berkunjung ke Destinasi Pariwisata Pantai Pangandaran)". Journal : Tourism and Hospitality Essentials Journal 2, n. 2 (6 aprile 2016): 299. http://dx.doi.org/10.17509/thej.v2i2.1939.

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Abstract (sommario):
Pangandaran beach is one tourism destination in West Java, situated in the district of Ciamis ± 92 km south of the town of Ciamis. Pangandaran beach tourism destination, the type of nature tourism which is famous for its beaches. However, a decline in the level of tourist arrivals caused by several factors: less optimal promotion by tourism destination managers Pangandaran beach, unavailability of information centers which provide services to tourists, and tsunami disaster in July 2006 which destroyed most of the existing facilities in the area of Pangandaran beach. Because it would need to hold research to increase tourist visit through marketing public relations programs implemented by the managers of Pangandaran beach tourism destination. The research problem: 1)How does an idea a marketing public relations, 2)How is the idea of the decision to visit, 3)How does a marketing public relations visiting decision. This study aims to obtain an overview of marketing public relations, to obtain a marketing public relations descriptions, of the visiting decision and the influence of marketing public relations visiting decision. Data analysis technique are used path analysis (path analysis) with a sampling technique used systematic random sampling of 100 respondents. The results showed that the marketing public relations programs have a significant influence on the decision to visit. The biggest influence of marketing public relations programs visiting decision obtained through events and the smallest effect is obtained through public service activities. As for suggestions for tourism destination managers Pangandaran beach, should be more social activities to publications tourist or private sector to participate in this social activities, and make social activities are held regularly on the agenda the manager of Pangandaran beach tourism destination.
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Violina, Sara, e Ida Bagus Suryawan. "KUALITAS KEBERSIHAN LINGKUNGAN SEBAGAI PENUNJANG DAYA TARIK WISATA PANTAI SANUR KAJA". JURNAL DESTINASI PARIWISATA 4, n. 1 (25 giugno 2016): 20. http://dx.doi.org/10.24843/jdepar.2016.v04.i01.p04.

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Abstract (sommario):
ABSTRACT Northern Sanur Beach (Sanur Kaja Beach) consisting of Matahari Terbit Beach and the main Sanur Beach is a polular tourist destination on the island of Bali. Its strategic location, famous history, public and additional facilities, makes Sanur a demanding location for tourists. But one important role for such tourist destination is the cleanliness of the beach itself, providing comfort to travellers. A direct observational study and a descriptive cross-sectional study with randomized survey of 100 travellers (50 domestic and 50 international) regarding the cleanliness of Northern Sanur beach. Through the survey we gathered traveller’s evaluation on current sanitation of public facility (toilet, parking, and resting), additional facilities (restaurant, gift shop, and street vendors), and sanitary facility (rubbish bins) condition in Northern Sanur beach giving a score of very clean, moderate, or poor. Through direct observational we looked at physical objects around the environement such as its geography and facilities available in Northern Sanur beach collected through interviews from local informans. Respondents showed an overall positive response of “moderate” 25 of respondents or (50%) of domestics, and 32 respondents or (64% ) foreigners regarding sanitation quality of Northern Sanur beach. Public facilities as well as additional facilities are generally considered to be moderately clean by the total respondents. But traveller’s opinion suggested the “poor” availability of rubbish bins 25 of respondent or (50%) domestics and 23of respondents or (46%) foreigners. Public facilities of four public toilets, two parking area, rubbish bins, are available for travellers and taken care by local employees assigned by the head of village. As travellers states Northern Sanur to be moderately clean, other results that are considered poor or below expectation regarding specific public facilities should be taken care of to provide a better tourist attraction. Cleanliness is a tourist attraction itself, therefore keeping clean it is important for the sustainability of tourism.
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Devienne, Elsa. "Urban Renewal by the Sea: Reinventing the Beach for the Suburban Age in Postwar Los Angeles". Journal of Urban History 45, n. 1 (29 marzo 2018): 99–125. http://dx.doi.org/10.1177/0096144217753379.

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Abstract (sommario):
Urban renewal was not just a city phenomenon: it also unfolded on the beaches of coastal metropolises, most spectacularly in Los Angeles where a “beach lobby” made up of public officials, businessmen, and engineers coalesced in the 1930s. In the postwar, they implemented their vision by buying beaches for the public and turning the polluted and eroded strands of the early-twentieth century into modern playgrounds. While they effectively prevented a “white flight” from the beach and successfully reshaped the coastal environment, their efforts also resulted in the erasure of alternative beach communities. By the 1960s, the lobby could rejoice in the enduring popularity of the city’s beaches. Yet new beach advocates used the California public beach tradition as a rallying cry to stop further development. “Beach renewal” in Los Angeles thus challenges both narratives of postwar urban decline and the binary opposition between 1930s conservationists and 1960s environmental activists.
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Più fonti

Tesi sul tema "Public Beach"

1

Montgomery, Marilyn Christina. "Beach nourishment at Pensacola Beach, Florida assessment of public perception /". [Pensacola, Fla.] : University of West Florida, 2007. http://purl.fcla.edu/fcla/etd/WFE0000011.

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2

Norman, Garrett Tyler. "Pismo Beach Public Art Program". DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1182.

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Abstract (sommario):
Public art plays a significant role in communities around the world. It embodies a close relationship between the artist, the space in which it’s being exhibited, and the public. The development of this project examined various literary sources that demonstrated the importance of public art and how cities, artists, and community members may benefit from the incorporation of public art. This project included the framework for development of a Public Art Program for the City of Pismo Beach, California, which outlined the critical steps of a planning process and implementation of the program.
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3

Fitton, Timothy, e tfitton@hotmail com. "Tailings beach slope prediction". RMIT University. Civil, Environmental and Chemical Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080212.120813.

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Abstract (sommario):
Tailings (mining waste) disposal is a significant consideration for the mining industry, with the majority of the ore processed in most mining operations ending up as tailings. This creates large volumes of tailings, which must be handled and stored responsibly to avoid potential environmental catastrophes. The most common form of tailings storage facility is the impoundment, where tailings are contained within a basin, with beaches forming around the perimeter of the impoundment and a pond standing in the middle. A relatively new method of tailings storage is to create a 'stack', whereby the tailings solids form a large heap, with the discharge of tailings slurry from the apex of the heap. It is of significant value for mine operators and tailings engineers to be able to predict the shape of the beach that forms in either of these disposal scenarios. The key to being able to do this relies on a method of prediction of the beach slope. The aim of this work is to develop a method of tailings beach slope prediction for tailings slurries that are sub-aerially discharged from a pipe. In this thesis a literature review is undertaken, investigating existing methods for the prediction of tailings beach slopes. These methods are validated against relevant industrial and experimental data. Two separate phases of experimental work have taken place in an effort to investigate tailings deposition behaviour, one at mine sites and the other in a laboratory on a small scale. Three new tailings beach slope prediction models are presented; a simple empirical model enabling quick approximate predictions; an a priori tailings beach slope prediction model based on existing theories of open channel flow, sediment transport and rheology, which is more powerful due to the greater degree of theory in its foundation; and a new semi-empirical model that shares some of the theoretical aspects of the a priori model but offers better predictions due to its empirical calibration to the experimental data. The experimental results, along with 3 other independently collected sets of relevant industrial and experimental data, are used to validate the beach slope prediction models found in the literature, as well as the new beach slope models presented in this thesis. Statistical evaluation of the performance of all of these models is presented to enable comparison. Finally, a new beach shape model is presented for the three dimensional geometric forecasting of the beach surface of a tailings stack. Historic tailings discharge data is run through the beach shape model, and the shapes predicted by the model are compared with aerial survey data of a real tailings stack for validation of the shape model. This work not only presents a new method of tailings stack shape prediction, but also a plausible theory for explaining the concavity of tailings beaches. The stack shape model also has the potential to be developed further for the three dimensional modelling of tailings beaches formed in other types of storage facilities, such as impoundments or valleys.
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4

Ginsberg, Yona. "Regulating public space : the “religious” beach of Tel Aviv". Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2009/3627/.

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5

Duong, Huynh Lien Stephanie, e stephanie duong@flinders edu au. "Investigating the ecological implications of wrack removal on South Australian sandy beaches". Flinders University. School of Biological Sciences, 2008. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20091125.143045.

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Abstract (sommario):
Accumulations of seagrass, macroalgae and other matter, collectively known as wrack, commonly occur on many sandy beaches, and can play an important role in coastal and nearshore ecosystems. Despite this, wrack removal from sandy beaches is a widespread and increasingly common practice globally, and there is little information regarding the ecological effects of such wrack removal on sandy beaches. The aim of this thesis was to establish the ecological importance of wrack in South Australian (SA) sandy-beach ecosystems. As a first step in furthering our understanding of the effects of wrack removal, I aimed to assess the importance of wrack, independent of the effects of wrack removal. The second over-riding aim of this thesis was to assess the ecological effects of wrack removal on aspects of these systems. To date, the methods used for quantifying the size of wrack deposits on sandy beaches have had limited use due to the time and expertise required to conduct thorough sampling. In Chapter 2, I thus tested the accuracy of a rapid “photopoint” method to visually estimate percentage wrack cover as well as provide an archived record. Comparisons of results obtained from conventional transects with those from photopoints indicated that the photopoint technique can be used to rapidly and accurately estimate % wrack cover on sandy beaches. The photopoint method has a wide range of potential applications and represents a valuable advance in the field. Currently our knowledge of the amounts and types of wrack on SA shores is limited, despite these accumulations being a feature of some SA beaches. Wrack deposits in three biogeographical regions of SA were thus repeatedly surveyed to assess spatial (between and within regions) and temporal (seasonal and inter-annual) variation (Chapter 2). Both wrack cover and the composition of wrack deposits varied spatially and temporally. Wrack deposits contained a diverse array of seagrass, algal, other biotic materials and anthropogenic debris. The South East region of SA had distinctly-different wrack deposits compared to the Metropolitan and Fleurieu Peninsula regions; in general, the cover of wrack was higher, and the diversity and biomass of kelps, red algae and green algae was higher in this region compared to the other two regions. South Australian wrack deposits are thus dynamic and complex. The amount of wrack deposited and retained on a beach may be affected by the beach morphology but, to date, few studies have investigated this link. I assessed wrack cover on beaches with a range of morphodynamic types and found that beaches that were more dissipative in nature had a greater cover of wrack than beaches of the reflective type. I also examined whether wrack deposits affected the sediment characteristics of underlying and nearby sediments. Wrack deposits had little measurable effect on underlying sediments and did not affect particle-size distribution or organic-matter content. There was, however, a trend for beaches in the South East region of SA to have higher organic matter content in their sediments, and these beaches also have higher wrack cover and higher proportions of algae in their deposits. There was also a trend for beaches with higher wrack cover to have less compacted sediments, although this trend was not consistent. Overnight pit-fall trapping surveys of the macrofauna on four SA sandy beaches indicated that local macrofaunal communities were diverse (representing 72 species from 19 Orders in total), abundant, and variable in both time and space. The macrofauna encountered were mostly terrestrial taxa with only 2 truly marine species, and spanned multiple trophic levels, concurring with the results of previous studies. Macrofaunal abundances were higher where associated with wrack than in bare sand, and macrofaunal communities differed between the driftline of wrack and wrack patches away from the driftline. Within the driftline itself, there were few differences between bare sand and wrack-covered areas, suggesting that the entire driftline area is important as a habitat and food resource. Thus, wrack deposits provide an important habitat and food source for macrofauna, and the driftline provides an area of beach with concentrated resources, which in turn concentrates a distinct macrofaunal community. Wrack deposition on sandy beaches varies spatially and is affected by morphological features on the beach-face such as cusps. In Chapter 5, I thus tested a series of hypotheses regarding the differences in wrack deposits, sediments and macrofaunal communities between cusp bays and horns. Bays had greater cover and larger pieces of wrack than horns. Sediment organic-matter content was greater on horns than in bays but mean particle size did not differ consistently between bays and horns. Macrofaunal diversity was higher in bays and this pattern was probably driven by differences in the cover of wrack between bays and horns. Cusp morphology thus influences the distribution of wrack on the beach-face, which in turn influences the distribution of macrofauna. Studies of sandy beaches with cusps should therefore be explicitly designed to sample cusp features and their associated wrack deposits. Chapter 6 assesses the incorporation of wrack into beach and nearshore ecosystems via two pathways: decomposition and incorporation into trophic webs. I assessed the decomposition of algal and seagrass wrack using litterbag experiments and found that after a very rapid initial loss of mass, likely due to cell lysis and leaching, the rate of decomposition of wrack was much slower. Most release of nutrients from organic matter decay thus appears to occur in the first few days after deposition and the processes affecting the rate and nature of wrack decomposition vary among taxa (i.e. algal versus seagrass and among species). Stable isotopes of C and N were used to assess whether beach macrofauna or nearshore macro-invertebrates and fish might rely on wrack as a source of nutrition. I found that seagrasses did not provide a food source for any consumers but algae, particularly brown algae including kelps, appeared to be potential sources of nutrition for beach and nearshore consumers. The incorporation of wrack into beach and nearshore ecosystems may thus occur primarily through consumption of algal wrack by herbivores such as amphipods and dipterans, with predation on them being important pathways for the transfer of nutrients and energy into higher trophic levels. The amount of wrack in the surf zone did not affect the abundance and species richness of fish and invertebrates netted there. The aim of Chapter 7 was to determine the effects of wrack removal on sandy beach macrofaunal communities. In the first study the effects of large-scale commercial harvest of wrack on the macrofaunal communities at Kingston were assessed. The macrofaunal communities present in the ‘Natural’ area of Kingston beach were far more diverse and abundant, and included different species, compared to the ‘Cleared’ area at Kingston. In the second part of Chapter 7, I experimentally removed wrack from the driftline of beaches to assess short-term effects on macrofaunal communities. The experimental treatment did not appear to have any measurable effects on the macrofaunal communities. I also analysed material that was removed from the beach in the raking experiments and found that a large proportion of the material (e.g. 81% of the DW) was sand. I recommend that future studies into the effects of wrack removal use large cleared areas of beach, attempt to use the same wrack removal methods and/or machinery used locally, and assess the macrofaunal communities repeatedly and over longer times following wrack removal activities. In Chapter 8, I attempt to assess the effects of removal of wrack for beach ‘cleaning’ or commercial ‘harvest’ of wrack by comparing key indicators from Chapters 2 to 7. Implications and recommendations for the management of wrack are discussed, including with regard to the techniques used in this thesis and their applicability in managing wrack deposits. I attempt to identify the shortcomings of this research as well as directions for further research. Thus I have demonstrated that wrack in SA provides an important link between offshore habitat and nearshore, beach and terrestrial habitats via the transfer of organic matter and nutrients. Wrack interacts with beach morphology and sediments, provides habitat for macrofauna, remineralises nutrients through its decomposition, and provides the basis of a complex trophic web. I conclude that wrack is a key component in beach ecosystems.
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6

Woodward, Eleanor Molly. "Rip currents in the UK : incident analysis, public awareness, and education". Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3529.

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Abstract (sommario):
Rip currents present a severe hazard to water users worldwide, resulting in over 100 drownings and thousands of lifeguard rescues annually. This thesis examines the demographics of who is effected by rip currents in the UK, what activity they are undertaking, when and where incidents occur, how much the public know, what people have experienced, and how best to educate them. Analysis of 7909 rip current lifeguard rescues (16777 people) across the UK between 2006-2013 highlighted the most at risk group, and subsequent target audience for education, to be male teenagers aged between 13-17 years old (n=2906, 17%). Geographically, the highest incidents occurred on the beaches in the Southwest of England (n=6911, 87%). Incidents mostly occurred outside of lifeguard flagged areas (n=4302, 54%) and mainly involved those using bodyboards (n=5290, 52%). Through the analysis of 407 public beach-based rip current and beach safety questionnaires, it was established that beach users have a poor understanding of rip currents (n=263, 65%) but a good perception of the beach safety flags (n=389, 96%). People with greater knowledge were typically educated by a lifeguard, enter the sea more frequently or have been caught in rip currents themselves. The experiences of 553 people caught in rip currents were analysed using an online questionnaire. The gender split was 69% male (n= 382) to 31% female (n= 171), indicating that males are caught in rip currents more than females. Swimming directly to shore against the rip followed an initial panic (n=108, 34%) for most people caught in a rip. Swimming parallel to the beach was the most remembered, advised, utilised, and promoted safety message. Respondents advocated the use of lifeguards to disseminate rip current safety messages. A new and unique rip current education programme was developed from the synthesis of these results. A lifeguard delivered a pilot programme to 185 teenagers in three schools and two community groups in the Southwest of England. This interactive pilot consisted of exercises using videos, photographs, news reports, and a swimming machine. Levels of rip current knowledge were evaluated before and after, and at regular intervals, to assess knowledge retention. The short-term effects after 3 months were positive, showing statistically significant (p < 0.0005) improvements in mean knowledge levels. This thesis provides a new contribution to the expanding field of social and behavioural rip current research. The development of a unique rip current education programme presents an alternative method for increasing public awareness, and supports the worldwide prevention of rip current incidents and fatalities.
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7

Flaherty, Kevin N. "Assessing public use of spatial data in Long Beach, CA". Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527699.

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Abstract (sommario):

The Participatory GIS literature (PGIS) focuses on how community based organizations (CBOs) use geographic information. With its large population and history of community development the City of Long Beach is a perfect case study to explore this. For this research, I used a mixed methodology: conceptualization, interviews and surveys.

I conducted interviews covering five distinct subject areas to learn that connected organizations are more likely to use maps and geographic information. I then conducted a survey with 29 questions to find how this is the case. One idea is that there is a process of organization. Another is the possibility of predicting map usage using development level and organization type. Finally, this research proposes that new research qualitatively trace usage using a broad population.

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8

Schoenbaechler, Jessica. "Beach Drive: Public Rights and Private Property: A Documentary Film". Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5345/.

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Abstract (sommario):
The Texas Open Beaches Act states that the public beach extends from the water up to the line of vegetation. Once a privately-owned property is submerged, it transfers into state ownership. Because of severe erosion and the shifting nature of vegetation, the Village of Surfside has lost several rows of houses and streets and, currently, over thirty houses are located on the public beach obstructing public access in violation of the Texas Open Beaches Act. The extreme erosion in this small village on the Texas Gulf Coast puts homeowners, property owners, legislators, and beachgoers in difficult positions and many are at odds with one another. The documentary film is structured around rental property owner Russell Clinton, environmentalists Ellis Pickett and Jeff Hooton, and former State Senator A.R. "Babe" Schwartz.
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9

Fallon, Kathleen Michelle. "Rip Current Formation and Beach Safety Implications for Several U.S. Atlantic Coast Beach Areas". FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3382.

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Abstract (sommario):
This dissertation combines seemingly different studies, which work together to describe the physical characteristics of rip current development and associated social implications at several locations. These fast-moving, concentrated flows of water travel offshore and can be found on any beach with sufficient wave action. Any event of increased wave steepness will erode a large quantity of sediment from the beach. The material deposited offshore eventually makes its way back; during this process, ocean water becomes trapped behind a shore-attached bar resulting in a ridge-and-runnel. These formations are seen at East Hampton, where rip-like currents form as concentrated water drains from the runnel through a breach in the ridge. Camera images from 2010-2016 captured ridge-and-runnel formations and the ensuing currents. These newly described rips behave similarly to bar-gaps; however, they are not directly related to wave action. Coastal scientists consider rip currents to be the number one hazard at most beaches. In Palm Beach County, two traditional rip types were studied: bar-gap and structurally-controlled. Lifeguard incident reports from 2011-2016 were used to correlate wind speeds and wave heights to rip related rescues at three beaches. This research was undertaken in an effort to determine under what conditions most beachgoers become caught in this hazard. Rip currents were seen to be the most dangerous to bathers on days with moderate wind and wave activity. The same beach states that lead to the strongest rips also tend to keep beachgoers from entering the ocean. A social survey at Miami Beach, from 2011 to 2012, quantified beachgoer’s rip knowledge and their recognition of hazards. A significant portion of the respondents showed insufficient knowledge, which indicated they are at-risk of being caught or drowning in a rip current. Frequent exposure to the beach, maturation, and residency were identified as the main contributors to one’s literacy whereas education was the only variable that influenced a beachgoer’s visual recognition of hazard. The information gathered by these surveys can aid in creating better rip current awareness campaigns targeted to demographics that were determined as the most at-risk. An understanding of the physical and social science of rip currents can mitigate the impact of these beach hazards.
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10

Wildman, Kim. "The beach: the making & remaking of Coffee Bay (1945-2005)". Thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/6714.

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Coffee Bay, a small beach resort located in the heart of the former Transkei, is one of the current tourist ""hot spots"" on South Africa's Wild Coast. Through a detailed analysis of tourist literature spanning several decades, together with consideration of established theories regarding the 'making of place', this study examines the relationship between visual representations of Coffee Bay and the changing patterns of tourism in the seaside resort from 1945 to the present. This study traces the Coffee Bay's development over three separate periods - 1945 to 1969, 1970 to 1989, and 1990 to 2005 - during which time three different groups of tourists inhabited its space: cottage owners, hotel guests and backpackers. Despite their differences, each group sought the same thing an archetypal, mythical vision of a tourist ""paradise"". They thus inhabited and confected Coffee Bay's touristscape with their interpretations of this Utopia.
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Libri sul tema "Public Beach"

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New Jersey. State Beach Erosion Commission. Public hearing before the State Beach Erosion Commission: Beach protection strategies--planning for the future. Trenton, N.J. (162 W. State St., CN 068, Trenton 08625-0068): Office of Legislative Services, Public Information Office, Hearing Unit, 1993.

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Needham, Susan Anne. Cambodians in Long Beach. Charleston, SC: Arcadia Pub., 2008.

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United States. National Park Service., a cura di. Environmental assessment: Ocean Beach public restrooms : Golden Gate National Recreation Area. [Denver, Colo.?: National Park Service, 1989.

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United States. National Park Service., a cura di. Environmental assessment: Ocean Beach public restrooms : Golden Gate National Recreation Area. [Denver, Colo.?: National Park Service, 1989.

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5

Architects, Leddy Maytum Stacy, Office of Cheryl Barton, San Francisco Public Library. North Beach Branch., San Francisco Public Library. Branch Library Improvement Program., San Francisco (Calif.). Dept. of Public Works. e San Francisco (Calif.). Recreation and Park Dept., a cura di. Joe DiMaggio Playground and North Beach Public Library: Master plan report. San Francisco, Calif: Leddy Maytum Stacy Architects, 2008.

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Greg, Smithsimon, a cura di. The beach beneath the streets: Contesting New York City's public spaces. Albany: State University of New York Press, 2011.

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Massachusetts. Attorney General's Office. Division of Environmental Protection. Public rights/private property: Answers to frequently asked questions on beach access. Boston, MA: Office of the Attorney General, Environmental Protection Division, 2000.

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Works), United States Office of the Assistant Secretary of the Army (Civil. Interim--Illinois shoreline erosion, Casino Beach, Illinois: Communication from the acting Assistant Secretary (Civil Works), the Department of the Army transmitting a report on Illinois shoreline erosion, Casino Beach, Illinois, together with other pertinent reports, pursuant to Public Law 99-662. Washington: U.S. G.P.O., 1987.

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United States. Office of the Assistant Secretary of the Army (Civil Works). Interim--Illinois shoreline erosion, Casino Beach, Illinois: Communication from the acting Assistant Secretary (Civil Works), the Department of the Army transmitting a report on Illinois shoreline erosion, Casino Beach, Illinois, together with other pertinent reports, pursuant to Public Law 99-662. Washington: U.S. G.P.O., 1987.

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United States. Office of the Assistant Secretary of the Army (Civil Works). Interim--Illinois shoreline erosion, Casino Beach, Illinois: Communication from the acting Assistant Secretary (Civil Works), the Department of the Army transmitting a report on Illinois shoreline erosion, Casino Beach, Illinois, together with other pertinent reports, pursuant to Public Law 99-662. Washington: U.S. G.P.O., 1987.

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Capitoli di libri sul tema "Public Beach"

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Urrea-Mariño, Ulsía. "Privatization of the Mexican Coast, the Case of the Municipality of Solidaridad, Quintana Roo from the Perspective of the Public Administration and Everyday Life Practices". In Beach Management Tools - Concepts, Methodologies and Case Studies, 701–18. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58304-4_35.

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Simeone, Maurizio, Paola Masucci, Martina Defina, Gianmarco Di Pace e Caterina De Vivo. "Development of a sustainable accessibility model for the Marine Protected Area Gaiola Underwater Park, in Naples, Italy". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 322–32. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.30.

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The Marine Protected Area Gaiola Underwater Park was instituted in 2002 for the preservation of natural and archaeological aspects. Due to the urban context, the anthropic pressure has always been high and it has always undermined the preservation of the cultural and environmental heritage. The public beach in the General Reserve has always been impacted by great problems of overcrowding. The safety problems highlighted by the pandemic drove the Manager Authority to apply a new model of accessibility. This work aims to show and discuss the results obtained with this new fruition model.
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Chase, Laura. "Chapter 12. Public Beaches and Private Beach Huts – A Case Study of Inter-war Clacton and Frinton, Essex". In Histories of Tourism, a cura di John K. Walton, 211–27. Bristol, Blue Ridge Summit: Multilingual Matters, 2005. http://dx.doi.org/10.21832/9781845410339-014.

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D’Cruz, Glenn. "The Beach Beneath the Street: Art and Counterpublics". In Contemporary Publics, 17–26. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-53324-1_2.

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Hodgson, Kimberley. "Integrating Equity as a Central Theme in Urban Agriculture: The Case of the City of Seattle, Washington". In Urban Agriculture, 335–49. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-32076-7_18.

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AbstractLocal food is not a new topic in Seattle and surrounding region. Nestled in an agriculturally rich region, Seattle has a long and robust history of backyard and community gardening. A strong network of grassroots and community-based organizations work on food system issues. Many of these organizations have been actively addressing issues such as community gardening, food production, and food security since the early 1970s, long before the city government began to take an interest in the Seattle food system. The Seattle city government established the P-Patch Community Gardening Program in 1973, and the Seattle-King County department of public health has been actively engaged in nutrition issues for decades. However, it was not until the early 2000s, that the city government began engaging in systems change. The Seattle city government supports a number of urban agriculture and food systems related issues through public planning, policy and funding decisions. This chapter explores the various geographic, social, agricultural and governmental contexts at play and provides a critical examination of the city government’s response to urban agriculture. The chapter describes the city government’s impetus for addressing urban agriculture through public policy and an overview of the various opportunities and challenges it has faced along the way in addressing larger societal issues such as racial and social justice through urban agriculture. The author uses a critical lens to examine key policies such as the urban agriculture zoning regulations and the Local Food Action Plan, and key projects, such as the Rainier Beach Urban Farm & Wetlands Project, to better understand the impacts of urban agriculture policies on social, health and racial equity in Seattle.
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Thornton, Michele, Marty Bhatia e Carin Silkaitis. "Regenerative Tourism and Mental Health: The Clean Wave Foundation, Costa Rica". In Strategic Innovative Marketing and Tourism, 65–73. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51038-0_8.

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AbstractRising mental health needs combined with barriers in access to care has individuals seeking new approaches to accessing care and improving their overall sense of well-being. Intentional forms of tourism, particularly nature-based, and regenerative tourism may have a role to play as an opportunity to address this growing need in a way that traditional efforts to address mental health may be lacking. While studies have begun to document the physical health, mental health and perceptions of well-being impacts of nature-based, sustainable or ecotourism they are just beginning to explore this with regards to regenerative tourism. Regenerative tourism, is slightly more nuanced, and is described as “leaving the place behind better than before.” A hallmark of a sound regenerative tourism model, is that it emerges from within the community, and is often tied to a local community organization doing the ongoing work that spearheads the practice. This paper employs grounded theory to proposes a new model linking regenerative tourism to well-being and documents a qualitative study conducted in the Spring of 2023 with a regenerative based organization (The Clean Wave Foundation)—that connects individuals with beach and underwater clean-up events across Costa Rica. Key participants (n = 12) discuss their experiences, personal well-being and community impacts in a semi-structured interview format. Community organizations, economic development agencies, the tourism industry and scholars in marketing and public health will all find benefit in this work.
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Kjaran, Jón Ingvar, e Mohammad Naeimi. "Bench Love in Daneshjoo Park: Queering Public Spaces and Pedagogy for the Public in Tehran". In Mapping LGBTQ Spaces and Places, 105–23. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03792-4_7.

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Bush, Gregory W. "Public Land by the Sea". In White Sand Black Beach, 148–75. University Press of Florida, 2016. http://dx.doi.org/10.5744/florida/9780813062648.003.0006.

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Bush, Gregory W. "Forging Our Civil Right to Public Space, 1999–2015". In White Sand Black Beach, 202–46. University Press of Florida, 2016. http://dx.doi.org/10.5744/florida/9780813062648.003.0008.

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Low, Setha. "What If Jones Beach Was Not Public?" In Why Public Space Matters, 39—C3.F7. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/oso/9780197543733.003.0003.

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Abstract Chapter 3. What if Jones Beach Was Not Public? Social Justice and Belonging on Long Island, New York explores social justice and belonging through an ethnographic study of Jones Beach on Long Island, New York. Visitor behavior, participant observation, and interviews portray how the components of social justice—inclusion, representation, recognition of difference, an ethic of care and contestation and resistance—are experienced and valued. It illustrates how social contact can develop into a public culture of acceptance and tolerance by findings one’s own place and a sense of belonging and sharing with others. The chapter concludes with a discussion of the Public Space and Social Justice Evaluation Framework and how it can be used to identify and design just public space.
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Atti di convegni sul tema "Public Beach"

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Colmenares, Silvia. "Public Domesticity: The Beach as a Model". In 2018 ACSA International Conference. ACSA Press, 2018. http://dx.doi.org/10.35483/acsa.intl.2018.54.

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The temporary and collective appropriation of public spaces has become a way of pointing out the failure of their institutional management. But through the whole system of locally produced opportunities of engagement, a tendency to execute this appropriation by the performance of domestic scenes can be identified. Therefore, the aim of this paper is to describe this growing tendency to reclaim what is public by showing its capacity to be used as private, and among those, the ‘beach’ will be described as a model. Being the perfect incarnation of the idea of human fellowship in the open air, the beach regulates itself through its very un-programmed usage. This might be the reason why its genuine conditions have been tentatively replicated at the core of some highly urban scenarios. However, this experience oriented design examples seem to be just a rehearsal of what a real beach should be. Relying on the physical properties of the sand and the colourful atrezzo accompanying sunbaths, they fundamentally fail to engage the radicalness of the beach concept. If the topical image of relaxed individuals is superseded, by default distribution of space, access control, cleansing and security issues come to the fore. At a time when it is no more ‘under the pavement’, the beach can still gear the debate about public space in our cities.
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Musskopf, Bruno, Fernando De Souza, Isabela Schmidt, Livia Silva, Nicholas Wojeicchowski, Nicolas Abatti, Renato Musskopf, Jaison Schinaider, Cristiano Garcia e Samuel Feitosa. "Latinder -Modernizando Adoções de Animais Pets". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2020. http://dx.doi.org/10.14210/cotb.v11n1.p571-575.

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The abandonment of animals is a recurrent problem in Brazilian society. This abandonment results in several problems to public health and very often go unnoticed by society and public policies. The Latinder mobile application was born from the Student Integration Project of the Integrated Computing Technical Course at an institution located in the interior of Santa Catarina state. The mobile application has the aim of combating pet abandonment and works like a social network with the purpose of facilitating the process of animal adoption.
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Rodrigues de la Rocha, Fábio. "Sistema de Iluminação Publica Inteligente". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2020. http://dx.doi.org/10.14210/cotb.v11n1.p014-016.

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Public street lighting management is a well known problemwhich can be revisited from the perspective of Smart Cities.In Smart Cities there is an interconnection of services andinfrastructure to provide sustainable growth and improvementsin citizens’ quality of life. In this research work, weexplore new low cost technologies to create a smart streetlight system capable of monitoring and controlling the lamps,thus reducing the costs with maintenance and allowing amore rational use of electricity.
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Barbosa Rolim, Vanessa, e Fabiano Baldo. "Modelo de Predição de Conforto de Usuários do Transporte Coletivo". In Computer on the Beach. São José: Universidade do Vale do Itajaí, 2021. http://dx.doi.org/10.14210/cotb.v12.p064-071.

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The small and medium-size cities are facing problems related to mobilitythat could be avoided by adopting the public transportationsystem, as buses and trains. However, in many Brazilian cities theuse of public transportation is neglected because it is considereduncomfortable, expensive and insecure. To attract passengers forsuch kind of transportation there are several possible approaches,the promotion of comfort perception is one of those. Several studieshave already approached this problem, however, few of themaddressed the perception of comfort felt by the passengers usingtelemetry data collected from the vehicle. Among the works thatuse such data, none of them applied data mining techniques toabstract a general model of comfort perception. Therefore, thiswork aims to apply mining techniques over telemetry data collectedfrom vehicles to build a comprehensible model to classifythe level of comfort of public transportation passengers. To achievethis objective machine learning techniques were used, centered ondecision trees. Due to the complexity of abstracting the model therewere constructed three models, one for each acceleration axis thatwere merged using a meta-classifier responsible to point out thepassenger general comfort. The results have reached an accuracyof 85,2%, which can be considered a promising result regardingthe difficulties of separating the data source in sets that can betteridentify the bus drivers behaviour.
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Andres Carmona Cortes, Omar, e Wesley Eduardo de Oliveira Melo. "Utilizando Análise de Sentimentos e SVM na Classificação de Tweets Depressivos". In Computer on the Beach. São José: Universidade do Vale do Itajaí, 2021. http://dx.doi.org/10.14210/cotb.v12.p102-110.

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The number of depression cases has grown worldwide. The WorldHealth Organization estimates that 5.8% of the Brazilian populationalready present depression symptoms. In the world, 4.8% ofthe entire population has presented some symptoms. These dataare alarming because they represent about 12 million people onlyin Brazil and 368 million worldwide. Therefore, it is essential tobuild applications that adequately identify the population’s feelingsabout depression to drive public health policies. Appropriate policiescan save money on public health and keep people active. Thus,this work investigates how to apply machine learning in classifyingdepression posts on Tweeter. The data were extracted from thesocial media network, reaching a total of 31.177 tweets classified asdepressive and non-depressive. The application was implementedin Python with Pandas and SciKit Learning. Results have shownthat SVM overcomes the Naive Bayes algorithm and can reach anaccuracy of 94%, precision of 91%, a recall of 91%, and an F1 Scoreof 91%.
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De Sousa Brito, Matheus, Diego Bruzaca de Souza, Luís Victor Bastos Rezende, Gabriel Fortes Marques, Priscila Silva Fernandes, Vitor Bremgartner da Frota e Luis Rivero. "Definindo um Sistema de Monitoramento em Tempo real para o Transporte Público da Cidade de Manaus". In Computer on the Beach. São José: Universidade do Vale do Itajaí, 2021. http://dx.doi.org/10.14210/cotb.v12.p490-492.

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The management of public transportation suffers from the difficultyof predicting population growth and consequently meet its demandsin terms of quality and safety. With regard to safety, several computersystems have emerged to help prevent and treat transportproblems, such as detour of routes and speeding. However, in thecontext of the Manaus city, these systems cannot: (a) detect specificobjects (firearms, knives, among others) to identify assaults; and (b)identify overcrowding in means of transportation. The inclusion ofthese functionalities with the above mentioned ones may allow accessto more information to subsidize decision making and improvethe quality of security offered by the public transportation service.This article presents a proposal for an intelligent system to monitorthe safety of a bus related to the above mentioned points. In orderto raise the requirements and propose the graphical interface of thesystem, the techniques of benchmarking and focus group were used.The prototype presented allows simulating how the informationwould be presented to those responsible for monitoring the bus,in addition to generating reports for monitoring the history of themeans of transport and to support decision making regarding thesafety of passengers and servers.
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Silva, Gabriel, Lethícia Souza, Marcos Souza e Cleisson Batista. "Proposta de uma Aplicação web para Gestão e Simplificação do Processo de Doação para instituições de Caridade". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2020. http://dx.doi.org/10.14210/cotb.v11n1.p581-584.

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The present article refers to the construction of a web application named Doai, capable of managing and promoting donations for non-governmental organizations (NGOs) and charities in the Piemonte Norte do Itapicuru - Bahia. From interviews with institutions’ managers, it became evident the lack of basic resources to maintain the continuity of the performed activities, It was also found that in many cases donations do not reflect your real needs. This demonstrates the lack of information between donors and these institutions. The problems experienced in these organizations was motivate the development this proposal, which aims to promote existing institutions in the region, with the modernization of dissemination actions, with the simplification of the donation process and with the resources available to leverage the contributions. After construction, the tool was submitted to analysis, with the participation of 73 (seventy-three) people from the region. In this research it was possible to realize that few people are involved with philanthropic activities. On the other hand, a large part of the public are motivated to donate using the tool, showing out how it offers good usability. In addition, much of the public also shows interest in virtual payment methods. From a technical point of view, the tool has a good user acceptance and meets the proposed requirements.
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Mileski, Matheus, Daniel Prado Campos, Luiz Fernando Carvalho e Rafael Gomes Mantovani. "Sentiment Analysis in Social Networks during the 2021 and 2022 Formula 1 Seasons: A Study Using Natural Language Processing on Twitter". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2024. http://dx.doi.org/10.14210/cotb.v15.p236-243.

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ABSTRACTSentiment Analysis is an emerging research area that focuses onextracting semantic and emotional inferences from natural language,paving the way for analyses that deal with a high volume oftextual data. The growing importance of data in strategic decisionmakingand the recognition of social networks as vast repositoriesof public opinion have propelled this study, which aimed to explorethe interaction between human emotions and motorsport events.Thus, this study focused on applying Natural Language Processingto extract and analyze sentiments expressed in tweets about Formula1. Advanced machine learning and deep learning techniqueswere employed to train various models in the sentiment classificationtask. Among these, Logistic Regression and LSTMs stood out,achieving accuracies of 78.21% and 78.08%, respectively. The LSTMmodel, in particular, was implemented on a public dataset of tweetscollected during the 2021 and 2022 Formula 1 seasons. The modelwas used to classify the sentiments expressed by fans, allowingfor an exploratory analysis of data correlated to specific events ofthe races. The findings revealed significant engagement patterns,with notable spikes in emotional reactions coinciding with criticalmoments of the seasons. These discoveries illustrate how particularevents can profoundly influence the emotions and behavior of fans.From a detailed analysis of expressed sentiments, valuable data canbe obtained that may be leveraged for developing more effectivemarketing and communication strategies in the sport.
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Gustavo Atkinson Amorim, João, Vinícius Moreno Sanches, Tainee Bottamedi, André Victória Matias, Marco Antônio Martins Cavaco, Alexandre Sherlley Onofre, Fabiana B. Botelho Onofre e Aldo Von Wangenheim. "Nucleus Detection in Cervical Samples Stained With AgNOR". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2022. http://dx.doi.org/10.14210/cotb.v13.p045-050.

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ABSTRACTCervical cancer is a public health problem, where the treatment hasa better chance of success if detected early. This paper explores oneway of to analyze argyrophilic nucleolus organizer regions (AgNOR)stained slide using deep learning approaches of object detection fordetecting the different categories of nucleus. Our results show thata balanced dataset between the explored categories was essential,also that a ResNet-50 as backbone of Fast RCNN shows an AP of61.8% and 42.5% to detect nucleus and out of focus nucleus.
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Oliveira Walter, Maynara, Natália Tiemi Yada, Jéssica Iara Pegorini, Arielyn Pereira Silva e Alinne Cristinne Correa Souza. "We Can Do It: Uma Análise do Perfil Feminino de Computação no Mercado de Trabalho". In Computer on the Beach. Itajaí: Universidade do Vale do Itajaí, 2020. http://dx.doi.org/10.14210/cotb.v11n1.p269-276.

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Women have always struggled to hold their own in the employmentmarket. In computing area is not different as men are stillthe majority of professionals.Thus, this paper presents the resultsof a survey conducted throug female public in different computingorganizations. The survey aims to identify their satisfaction,fellings, challenges and perceptions about the role played in thisarea. The initial results are promising and indicate low participationof women in comparison as men, highlighting the importance of tocreate political to promote the women participation in the industryand courses of Computer.
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Rapporti di organizzazioni sul tema "Public Beach"

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Spurgeon, Scott. Representative Beach Profile Generator. Engineer Research and Development Center (U.S.), aprile 2023. http://dx.doi.org/10.21079/11681/46916.

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The purpose of this Coastal and Hydraulics Engineering Technical Note (CHETN) is to introduce an Esri ArcGIS Pro ArcPy Toolbox entitled “Representative Beach Profile Generator (RBPG)” that generates a single representative profile for a given study area based on elevation profiles. The toolbox aligns and averages input elevation profiles into a single profile based upon a chosen alignment feature. Furthermore, the toolbox allows the user to create maximum and minimum trapezoidal profile approximations for use within numerical models such as Storm-Induced BEAch CHange (SBEACH) and Beach-fx. This CHETN presents a brief description of the toolbox methods and includes a short demonstration of the toolbox’s application to help familiarize the user with inputs, outputs, and possible uses. The RBPG toolbox is available for public download at the link where this paper is hosted with the US Army Engineer Research and Development Center library services (library link will be inserted here).
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Martínez-Sala, AM, J. Monserrat-Gauchi e C. Campillo Alhama. Public relations in the tourism sector. Interactivity and social features of the official tourism websites of Spanish sun and beach destinations. Revista Latina de Comunicación Social, marzo 2017. http://dx.doi.org/10.4185/rlcs-2017-1170en.

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Schling, Maja, Roberto Guerrero Compeán, Nicolás Pazos, Allison Bailey, Katie Arkema e Mary Ruckelshaus. The Economic Impact of Sargassum: Evidence from the Mexican Coast. Inter-American Development Bank, settembre 2022. http://dx.doi.org/10.18235/0004470.

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This paper assesses the local economic impact of pelagic Sargassum seaweed washed ashore in tourism-heavy coastal zones in the Mexican State of Quintana Roo. The study relies on a carefully designed Geographic Information Systems (GIS) dataset of monthly observations from 2016 to 2019 for 157 beach segments. The dataset comprises an innovate measure of Sargassum seaweed presence, remotely sensed nighttime light intensity as a proxy of economic growth, as well as information on key infrastructure, sociodemographic and beach characteristics. We apply a fixed-effects regression model that controls for general time trends and unobserved, time-invariant differences across observations. We estimate that the presence of Sargassum in a beach segment reduces nighttime light intensity by 17.5%, representing an approximate 11.6% decrease in gross local product. Considering that impacts of Sargassum on local economic activity may be delayed due to reputational effects, our analysis finds that significant lagged effects can be detected up until 12 months after Sargassum was detected on the shoreline. These effect sizes range between a 5.9 and a 9.9% reduction in gross local product. Various robustness checks, including an adjusted measurement of Sargassum and the consideration of potential spatial correlation across beach segments, indicate that estimated impacts are consistently significant and negative across numerous specifications. For one of most tourism-dependent regions in the world, the recurrent influx is one of the most threatening manifestations of climate change. Our research is the first to robustly quantify the economic impact of Sargassum, and highlights the extent to which economic activity is negatively affected by the accumulation of seaweed and how these effects persist over time. The next important step is for both public and private sectors to invest in forecasting systems and containment strategies as well as engage in cleanup efforts to mitigate severe accumulations, inducing economic resilience in coastal communities.
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Kashian, Donna, Avik Basu, Joseph DePinto, Joseph DePinto, Jason Duvall, Ray Fahlsing, Darrin Hunt, Frank Lupi e Bretton Joldersma. Where People Meet the Muck: An Integrated Assessment of Beach Muck and Public Perception at the Bay City State Recreation Area, Saginaw Bay, Lake Huron. Wayne State University Library System, luglio 2019. http://dx.doi.org/10.22237/waynestaterepo/biosci_frp/1561939200.

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Conery, Ian, Brittany Bruder, Connor Geis, Jessamin Straub, Nicholas Spore e Katherine Brodie. Applicability of CoastSnap, a crowd-sourced coastal monitoring approach for US Army Corps of Engineers district use. Engineer Research and Development Center (U.S.), settembre 2023. http://dx.doi.org/10.21079/11681/47568.

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This US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, technical report details the pilot deployment, accuracy evaluation, and best practices of the citizen-science, coastal-image monitoring program CoastSnap. Despite the need for regular observational data, many coastlines are monitored infrequently due to cost and personnel, and this cell phone-image-based approach represents a new potential data source to districts in addition to providing an outreach opportunity for the public. Requiring minimal hardware and signage, the system is simple to install but requires user-image processing. Analysis shows the CoastSnap-derived shorelines compare well to real-time kinematic and lidar-derived shorelines during low-to-moderate wave conditions (root mean square errors [RMSEs] <10 m). During high-wave conditions, errors are higher (RMSE up to 18 m) but are improved when incorporating wave run-up. Beyond shoreline quantification, images provide other qualitative information such as storm-impact characteristics and timing of the formation of beach scarps. Ultimately, the citizen-science tool is a viable low-cost option to districts for monitoring shorelines and tracking the evolution of coastal projects such as beach nourishments.
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Butler, Afrachanna, Catherine Thomas, Alyssa Calomeni, Andrew McQueen e William Slack. Microseira wollei (M. wollei) blooms in freshwater ecosystems in Lake St. Clair (Michigan, USA)–impacts and possible management approaches. Engineer Research and Development Center (U.S.), settembre 2023. http://dx.doi.org/10.21079/11681/47648.

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The proliferation and shoreline accumulation of the filamentous biphasic cyanobacterium, Microseira wollei (M. wollei) (previously classified as Lyngbya wollei), have become an increasing problem in the Great Lakes, both for aesthetic reasons and its potential to harbor harmful bacteria and pathogens (Vijayavel et al. 2013). Occurrences have been reported and studies have also been conducted in the southeastern US where M. wollei has become a nuisance in recent years and is known to produce toxins (Hudon et al. 2014). Reports of M. wollei proliferations in the eastern US have been identified in the Manitoba lakes (Macbeth 2004), in Lake Erie from Maumee Bay (Bridgeman and Penamon 2010), in Lake St. Clair near Detroit (Vijayavel et al. 2013), and throughout the St Lawrence River (Vis et al. 2008; Lévesque et al. 2012). M. wollei has become a serious nuisance for marinas, public beaches, and lakefront property owners. In addition, M. wollei appears to have the ability to produce a wide range of toxins, but the conditions promoting their production, type, and concentration are poorly known (Hudon et al. 2014). Occurrences of large algal mats matching characteristics of M. wollei have been observed along the northwest shore and nearshore waters of the beach at Lake St. Clair dating back to 2010. To date, a comprehensive study detailing the potential impacts M. wollei has on freshwater ecosystems in the Great Lakes River, particularly Lake St. Clair is lacking. Further, management solutions are not well understood. This technical note (TN) reviews the potential causes of M. wollei blooms and their ecological impacts on aquatic systems and assesses the management options available to eliminate or minimize the impacts of these blooms.
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Campobasso, Marissa, Musa Ibrahim, Amanda Chisholm, Julia Miazek e Martin Page. pH pivoting for algae coagulation : bench-scale experimentation. Engineer Research and Development Center (U.S.), maggio 2024. http://dx.doi.org/10.21079/11681/48611.

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Harmful algal blooms (HABs) threaten recreational waters and public supplies across the US, causing detrimental economic and environmental effects to communities. HABs can be mitigated with dissolved air flotation (DAF) treatment, which requires addition of pH-sensitive charged chemicals to neutralize algae, allowing them to attach to microbubbles and float to the surface. During HAB events and photosynthesis, algae raise the pH to levels that are not ideal for DAF. Traditionally, pH is reduced with a strong acid; however, this adds operational cost and permanently adjusts the water’s pH. This study assessed an approach that might allow for infusing CO₂ from diesel-powered electricity generators into the water prior to DAF treatment. It was hypothesized that formation of carbonic acid could temporarily reduce the pH. Results showed that 2.5%–5.0% CO₂ mixed within compressed air can achieve pH levels between 6–7 in algal water with an initial pH of 9–11 and alkalinity of 150 mg/L as CaCO₃. Further, dosing CO₂ before chemical addition yielded a 31% improvement in water clarification. Returning the pH back to natural levels was not achieved using ambient air microbubbles; however, coarse bubble air spargers should be tested to provide more volumetric capacity for CO₂ absorption.
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8

Vera, Jose, e Ken Evans. PR186-203600-Z01 Impact of Drag Reducing Agents on Corrosion Management. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), ottobre 2021. http://dx.doi.org/10.55274/r0012177.

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The purpose of this research was to understand the potential impact of drag reducing agents (DRA) on internal corrosion of liquid hydrocarbon pipelines. The first task of this project included a comprehensive review of literature and knowledge, both in public domain and from industry experience, on the effect of DRA on water and solid transport in liquid hydrocarbons, and possible interactions with other performance chemicals typically used in the oil and gas industry. This was the basis for defining the final bench test methodology and test matrix to be performed in the second task. A novel bench-top apparatus was designed based on a vertical Couette cell approach, and a test methodology was successfully implemented to evaluate the potential effect(s) of DRA on water accumulation and localized corrosion at the oil/water interface. A test matrix was conducted with two DRAs (a water based and an oil based) and two corrosion inhibitors (a water soluble and an oil soluble) at a given test condition (3.5% NaCl saturated with 97%CO2/3%O2, pH ~6 at 80 oF). There is a related webinar.
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Conery, Ian, Nicholas Olsen, Shannon Brown e Katherine Brodie. Quantifying coastal evolution and project performance at beaches by using satellite imagery. Engineer Research and Development Center (U.S.), giugno 2024. http://dx.doi.org/10.21079/11681/48671.

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Accurately delineating the shoreline is crucial for tracking coastal evolution, community vulnerability, storm impacts, and for coastal management decision-making. However, existing shoreline measurement methods are often time-consuming and expensive and therefore, USACE Districts are often forced to narrow areas of interest or monitoring frequency, decreasing the likelihood of making data-driven management decisions, especially over regional scales. In the last decade, space-borne earth observations have captured images subweekly, and can potentially be used for shoreline monitoring. This work investigated the Python-based CoastSat toolkit and compared the shorelines derived from publicly available satellite imagery to ground truth surveys at 37 sites across the nation chosen in coordination with Districts. Mean horizontal errors ranged from 4.21 to 20.58 m with an overall mean of 11.32 m. Tidal corrections improved accuracies at 82% of sites. The CoastSat slope function was tested and there were negligible differences in shoreline accuracy when compared with user-defined slopes. Twenty-year satellite-derived trends generally align well with ground truth trends. The satellite approach identified quantifying storm impacts and recovery, beach nourishment equilibration, diffusion and decay, shoreline response to nearshore berm placements and decadal shoreline evolution at the evaluated district sites. Work is ongoing to transition to a user-friendly software tool.
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10

Epiphan, Jean, e Steven Handel. Trajectory of forest vegetation under contrasting stressors over a 26-year period, at Morristown National Historical Park: Focused condition assessment report. National Park Service, marzo 2023. http://dx.doi.org/10.36967/2297281.

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The Jockey Hollow section and the New Jersey Brigade Area of Morristown National Historical Park (MORR) are predominantly comprised of upland oak-hickory forests that have regrown over the past 200 years from previous land uses. The forest is being damaged by two major stressors, a large population of white-tailed deer and an abundance of non-native, invasive shrubs and herbaceous species. This study explores changes to the forest over 26 years and suggests management techniques to avoid future degradation. The forest is typical of many upland stands in the region, and studies here would be applicable to many lands controlled by the National Park Service and to many public and private land owners. In 1995, 18 vegetation experimental plots were established in the forest, each 20 x 20 m. Ten plots were in areas that had no non-native, invasive plants. The other eight plots had invasive species. All trees, shrubs and a sampling of herbs were recorded in each of the 18 plots. At that time, no GPS technology was available and handwritten maps were used to record locations. The plots were revisited and resurveyed in 2001; however, only 13 plots were found. This 2021 study is a new survey of the plot conditions. The investigators were able to relocate 17 of the original plots. New GPS locations were recorded for these 17 plots to facilitate future studies. The goal of the study was to test if changes over 26 years in forest conditions differed between the original invaded plots as compared to the uninvaded plots. Also, these data will allow us to measure the progress of invasion into previously uninvaded areas. Together, these results will allow the forest managers to focus attention on the most aggressive plant invaders and to understand the fate of this forest type that is being challenged by deer and non-native plants. Over the last 26 years there has been no hunting for deer here. Also, the plots were not within the few deer exclosures at MORR; deer were able to enter the landscape from surrounding heavily wooded areas. Data were collected in four layers of vegetation – mature trees, saplings, shrubs, and herbaceous groundcovers. The mature trees in the invaded forest plots demonstrated declining trends. The species richness declined by 6%, the average number of trees declined by 30%, white ash and flowering dogwood had the most losses, and basal area did not increase over time because very few new saplings grew into mature tree sizes. The uninvaded plots’ mature trees also revealed a 20% declined in richness, number of trees declined by 18%, the greatest losses occurred for red maple and black birch, but basal area increased slightly due to growth of large persisting trees. Saplings in the invaded forest experienced declines over the 26 years. Species richness declined by 38%, number of native saplings decreased by 44%, and number of invasive saplings increased by 600%. In the uninvaded forest, the conditions and trends were variable. Richness decreased by 21%, no invasive saplings found, number of native saplings increased by 37% (due to increases in American beech). With American beech excluded, the number of native saplings decreased by 60%. In both forest types, the declining number of native saplings was primarily caused by excessive deer damage. For the shrub layer in invaded plots, Japanese barberry stems increased by 122% by 2001 and 276% by 2021. Barberry became the dominant species. Similarly, wineberry stands increased 486% in 2001 and 157% for 2021. It is now the second most common species. However, in the uninvaded plots there was no significant increase in the number of barberry stems and wineberry was not present in 1995 or 2001, and only averaged 1.5 stems per plot in 2021. Neither species has a significant presence now and eradication is possible. A major finding is that the process of invasion of these shrubs over 26 years is very slow. For the herbaceous plants, in the invaded plots there was a sharp decrease in cover by 2021 due to the competitive impact by the abundant invasive shrubs. The invasive Japanese stiltgrass declined 86% in cover and native Carex (sedge) species declined by 78%. In the uninvaded forest plots, stiltgrass was present in very low amounts and did not increase significantly over 26 years. The number of quadrats with any stiltgrass only increased from 3 to 5 over the 26 years. These data show that stiltgrass invades slowly in the uninvaded plots, but in the invaded plots it was greatly replaced by invasive shrubs. Overall, the rate of change of the native herb cover was slow. Together, these data suggest that currently uninvaded forest areas can be protected by monitoring and rigorously eliminating any initial invasions by non-native shrubs and herbs. Once these species reach a significant presence in number of stems or cover in a plot they explode in number. Early intervention when invasive plants first appear is the most practical management tool. Reduction of deer density will also increase the reproductive potential and sustainability of our main forest tree species. Planting of new young canopy tree species, with protection from deer, can retard the ability of invasive plants to begin new populations.
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