Construction Noise Annoyance among the Public Residents

2015 ◽  
Vol 74 (4) ◽  
Author(s):  
Nadirah Darus ◽  
Zaiton Haron ◽  
Siti Nadia Mohd Bakhori ◽  
Lim Ming Han ◽  
Zanariah Jahya ◽  
...  
Keyword(s):  
Sound Pressure ◽  
Construction Sites ◽  
Noise Sources ◽  
High Noise ◽  
The Public ◽  
Noise Annoyance ◽  
Sound Pressure Levels ◽  
Relationship Of ◽  
The Relationship

Construction activities generate construction noise may cause noise annoyance among the public residents. The aim of this study is to investigate the noise annoyance level due to the sound pressure levels and the distances from the construction sites. Three public resident areas around Johor which located near to the construction sites have been selected. Two important indicators such as sound pressure levels and distances between the receiver and the noise sources were measured. 42 questionnaires were randomly distributed to the public residents who live near to the construction sites. The results showed that all respondent have different annoyance levels due to the construction noise. The sound pressure levels received by the public residents are increasing with the decreasing of the distance between the receiver and the noise sources. Thus, the relationship of noise annoyance levels is directly proportional to the sound pressure levels produced from construction sites. Meanwhile, the noise annoyance levels are decreasing with the increasing of the distances. As a conclusion, the public residents who live nearer to the construction sites suffered from a high noise annoyance level as expected.

On the Volatile Relationship of Secularization and New Religious Movements

2017 ◽  
Author(s):  
David Holland
Keyword(s):  
Religious Movements ◽  
New Religious Movements ◽  
Illustrative Case ◽  
Religious Groups ◽  
Christian Science ◽  
The Public ◽  
Public Action ◽  
Public Square ◽  
Relationship Of ◽  
The Relationship

This chapter considers the complex relationship between secularization and the emergence of new religious movements. Drawing from countervailing research, some of which insists that new religious movements abet secularizing processes and some of which sees these movements as disproving the secularization thesis, the chapter presents the relationship as inherently unstable. To the extent that new religious movements maintain a precarious balance of familiarity and foreignness—remaining familiar enough to stretch the definitional boundaries of religion—they contribute to secularization. However, new religious movements frequently lean to one side or other of that median, either promoting religious power in the public square by identifying with the interests of existing religious groups, or emphasizing their distinctiveness from these groups and thus provoking aggressive public action by the antagonized religious mainstream. This chapter centres on an illustrative case from Christian Science history.

scholarly journals The Effect of an Alternative Definition of “Percent Highly Annoyed” on the Exposure–Response Relationship: Comparison of Noise Annoyance Responses Measured by ICBEN 5-Point Verbal and 11-Point Numerical Scales

2021 ◽  
Vol 18 (12) ◽  
pp. 6258
Author(s):  
Makoto Morinaga ◽  
Thu Lan Nguyen ◽  
Shigenori Yokoshima ◽  
Koji Shimoyama ◽  
Takashi Morihara ◽  
...  
Keyword(s):  
Sound Pressure ◽  
Response Relationship ◽  
Alternative Definition ◽  
Exposure Response ◽  
Noise Annoyance ◽  
Numerical Scale ◽  
Verbal Scale ◽  
Sound Pressure Levels ◽  
Acoustic Surveys ◽  
Definition Of

Since the development of the 5-point verbal and 11-point numerical scales for measuring noise annoyance by the ICBEN Team 6, these scales have been widely used in socio-acoustic surveys worldwide, and annoyance responses have been easily compared internationally. However, both the top two categories of the 5–point verbal scale and the top three ones of the 11-point numerical scale are correspond to high annoyance, so it is difficult to precisely compare annoyance responses. Therefore, we calculated differences in day–evening–night-weighted sound pressure levels (Lden) by comparing values corresponding to 10% highly annoyed (HA) on Lden_%HA curves obtained from measurements in 40 datasets regarding surveys conducted in Japan and Vietnam. The results showed that the Lden value corresponding to 10% HA using the 5-point verbal scale was approximately 5 dB lower than that of the 11-point numerical scale. Thus, some correction is required to compare annoyance responses measured by the 5-point verbal and the 11-point numerical scales. The results of this study were also compared with those of a survey in Switzerland.

Reconceptualizing the Public Spaces of New Urban Areas in Hanoi: The End or the New of Public-Making?

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Minh-Tung Tran ◽  
◽  
Tien-Hau Phan ◽  
Ngoc-Huyen Chu ◽  
◽  
...  
Keyword(s):  
Public Space ◽  
Urban Areas ◽  
Public Spaces ◽  
The Public ◽  
Doi Moi ◽  
The World ◽  
Relationship Of ◽  
The Relationship ◽  
The City ◽  
Neighborhood Level

Public spaces are designed and managed in many different ways. In Hanoi, after the Doi moi policy in 1986, the transfer of the public spaces creation at the neighborhood-level to the private sector has prospered na-ture of public and added a large amount of public space for the city, directly impacting on citizen's daily life, creating a new trend, new concept of public spaces. This article looks forward to understanding the public spaces-making and operating in KDTMs (Khu Do Thi Moi - new urban areas) in Hanoi to answer the question of whether ‘socialization’/privatization of these public spaces will put an end to the urban public or the new means of public-making trend. Based on the comparison and literature review of studies in the world on public spaces privatization with domestic studies to see the differences in the Vietnamese context leading to differences in definitions and roles and the concept of public spaces in KDTMs of Hanoi. Through adducing and analyzing practical cases, the article also mentions the trends, the issues, the ways and the technologies of public-making and public-spaces-making in KDTMs of Hanoi. Win/loss and the relationship of the three most important influential actors in this process (municipality, KDTM owners, inhabitants/citizens) is also considered to reconceptualize the public spaces of KDTMs in Hanoi.

scholarly journals HOW TO SABOTAGE A SECRET SOCIETY: THE DEMISE OF CARL FRIEDRICH BAHRDT'S GERMAN UNION IN 1789

2017 ◽  
Vol 61 (2) ◽  
pp. 379-402
Author(s):  
ANDREW MCKENZIE-MCHARG
Keyword(s):  
Secret Society ◽  
Republic Of Letters ◽  
The Public ◽  
The North ◽  
State And Society ◽  
German Republic ◽  
The Status ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

AbstractIn 1789 in Leipzig, a slim pamphlet of 128 pages appeared that sent shock waves through the German republic of letters. The pamphlet, bearing the title Mehr Noten als Text (More notes than text), was an ‘exposure’ whose most sensational element was a list naming numerous members of the North German intelligentsia as initiates of a secret society. This secret society, known as the German Union, aimed to push back against anti-Enlightenment tendencies most obviously manifest in the policies promulgated under the new Prussian king Frederick William II. The German Union was the brainchild of the notorious theologian Carl Friedrich Bahrdt (1741–92). But who was responsible for the ‘exposure’? Using material culled from several archives, this article pieces together for the first time the back story to Mehr Noten als Text and in doing so uncovers a surprisingly heterogeneous network of Freemasons, publishers, and state officials. The findings prompt us to reconsider general questions about the relationship of state and society in the late Enlightenment, the interplay of the public and the arcane spheres and the status of religious heterodoxy at this time.

scholarly journals CORREDORES URBANOS COMO CONECTORES DE VIDA PÚBLICA. DIAGNÓSTICO DE LOS CORREDORES URBANOS CENTRALES EN LA AVENIDA 24 DE MAYO, AZOGUES

2021 ◽  
pp. 78-107
Author(s):  
Lizeth Benavides ◽  
Natasha Cabrera_Jara ◽  
Belén Campoverde_Bermeo
Keyword(s):  
Public Space ◽  
Mobility Model ◽  
Original Research ◽  
The Public ◽  
Palabras Clave ◽  
Relationship Of ◽  
Urban Corridor ◽  
Siglo Xx ◽  
The Relationship

El cambio de modelo urbano asumido durante el siglo XX, trajo un sinnúmero de problemas como la priorización del vehículo, por lo que en la última década han surgido esfuerzos para dotar de importancia al ciudadano de a pie, en el espacio público. Esta investigación estudió las condiciones físico-espaciales de un corredor urbano donde el modelo centrado en el vehículo se acentúa, con la fnalidad de generar posibles estrategias que reviertan esta situación. Se tomó como caso de estudio a la Av. 24 de Mayo, en Azogues, y se lo analizó mediante una metodología mixta, que evaluó, detalladamente, tres zonas de estudio, determinando que la falta de accesibilidad y conectividad y el modelo de movilidad defendido por la ciudadanía, en general, infuyen directamente en las condiciones del espacio público peatonal y por ende en la habitabilidad urbana, perjudicando los desplazamientos a pie. Palabras clave: Espacio público; habitabilidad urbana; conectividad; accesibilidad; percepción. AbstractThe change of urban model assumed during the 20th century, brought countless problems such as the prioritization of vehicles, so in the last decade eforts have emerged to give importance to the citizen on foot in the public space. This original research studied the relationship of urban habitability with the physical-spatial conditions of an urban corridor, where the vehicle-centered model is accentuated, to generate possible strategies to reverse this situation. The Av. 24 de Mayo in Azogues was taken as a case study and analyzed using a mixed methodology that evaluated in detail three study areas, determining that the lack of accessibility and connectivity and the mobility model defended by citizens in general have a direct infuence on the conditions of the pedestrianpublic space and, therefore, on urban habitability, which afects walking Keywords: Public space; urban habitability; connectivity; accessibility; perception.

THE ENERGETIC COSTS OF CALLING IN THE BUSHCRICKET REQUENA VERTICALIS (ORTHOPTERA: TETTIGONIIDAE: LISTROSCELIDINAE)

1993 ◽  
Vol 178 (1) ◽  
pp. 21-37 ◽  
Author(s):  
W. J. Bailey ◽  
P. C. Withers ◽  
M. Endersby ◽  
K. Gaull
Keyword(s):  
Body Mass ◽  
Sound Pressure ◽  
Metabolic Cost ◽  
Acoustic Power ◽  
Metabolic Energy ◽  
Energetic Cost ◽  
Metabolic Efficiency ◽  
Metabolic Costs ◽  
Sound Pressure Levels ◽  
The Relationship

1. The metabolic costs of calling for male Requena verticalis Walker (Tettigoniidae: Listroscelidinae) were measured by direct recordings of oxygen consumption. The acoustic power output was measured by sound pressure levels around the calling bushcricket. 2. The average metabolic cost of calling was 0.143 ml g-1 h-1 but depended on calling rate. The net metabolic cost of calling per unit call, the syllable, was calculated to be 4.34×10-6+/−8.3×10-7 ml O2 syllable-1 g-1 body mass (s.e.) from the slope of the relationship between total V(dot)O2 and rate of syllable production. The resting V(dot)O2, calculated as the intercept of the relationship, was 0.248 ml O2 g-1 body mass h-1. 3. The energetic cost of calling for R. verticalis (average mass 0.37 g) was estimated at 31.85×10-6 J syllable-1. 4. Sound pressure levels were measured around calling insects. The surface area of a sphere of uniform sound pressure level [83 dB SPL root mean square (RMS) acoustic power] obtained by these measurements was used to calculate acoustic power. This was 0.20 mW. 5. The metabolic efficiency of calling, based on total metabolic energy utilisation, was 6.4 %. However, we propose that the mechanical efficiency for acoustic transmission is closer to 57 %, since only about 10 % of muscle metabolic energy is apparently available for sound production. 6. R. verticalis emits chirps formed of several syllables within which are discrete sound pulses. Wing stroke rates, when the insect is calling at its maximal rate, were approximately 583 min-1. This is slow compared to the rates observed in conehead tettigoniids, the only other group of bushcrickets where metabolic costs have been measured. The thoracic temperatures of males that had been calling for 5 min were not significantly different from those of non-calling males. 7. For R. verticalis, calling with relatively slow syllable rates may reduce the total cost of calling, and this may be a compensatory mechanism for their other high energetic cost of mating (a large spermatophylax).

Two-step computational aeroacoustics approach for underhood cooling fan application

2021 ◽  
Vol 263 (3) ◽  
pp. 3615-3624
Author(s):  
Parag Chaudhari ◽  
Jose Magalhaes ◽  
Aparna Salunkhe
Keyword(s):  
Flow Field ◽  
Sound Pressure ◽  
Acoustic Analysis ◽  
Air Flow ◽  
Computational Aeroacoustics ◽  
Noise Sources ◽  
Fan Noise ◽  
Cooling Fan ◽  
Sound Pressure Levels ◽  
One Step

Aeroacoustic noise is one of the important characteristics of the fan design. Computational Aeroacoustics (CAA) can provide better design options without relying on physical prototypes and reduce the development time and cost. There are two ways of performing CAA analysis; one-step and two-step approach. In one-step CAA, air flow and acoustic analysis are carried out in a single software. In two-step approach, air flow and acoustic analysis are carried out in separate software. Two-step CAA approach can expedite the calculation process and can be implemented in larger and complex domain problems. For the work presented in this paper, a mockup of an underhood cooling fan was designed. The sound pressure levels were measured for different installation configurations. The sound pressure level for one of the configurations was calculated with two-step approach and compared with test data. The compressible fluid flow field was first computed in a commercially available computational fluid dynamics software. This flow field was imported in a separate software where fan noise sources were computed and further used to predict the sound pressure levels at various microphone locations. The results show an excellent correlation between test and simulation for both tonal and broadband components of the fan noise.

Prologue

2016 ◽  
Author(s):  
Robert Baron
Keyword(s):  
The Public ◽  
Curatorial Practice ◽  
Community Curation ◽  
Relationship Of ◽  
The Relationship

The prologue reflects on the relationship of conventional museum curatorial practice to Smithsonian Folklife Festival curatorial practices. In particular, it examines the multiple mediations in which Festival curators are involved and the process of “presenting” artists and participants to the public. It raises questions about the perils of objectification of artists within these “living exhibitions” and argues for dialogic approaches to developing Festival programs that incorporate participatory or community curation.

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