scholarly journals The Power of Interpretation: Minimizing the Construction Zone

2021 ◽  
Author(s):  
John McGinnis ◽  
Michael B. Rappaport
Keyword(s):  
Construction Zone

scholarly journals An Ethology of Adaptation: Dolphins Stop Feeding but Continue Socializing in Construction-Degraded Habitat

2021 ◽  
Vol 8 ◽  
Author(s):  
Ann Weaver
Keyword(s):  
Linear Models ◽  
Negative Binomial ◽  
Environmental Changes ◽  
Bottlenose Dolphins ◽  
Observation Time ◽  
Mixed States ◽  
The West ◽  
Behavioral Adaptations ◽  
Construction Zone ◽  
Free Ranging

Adaptation is a biological mechanism by which organisms adjust physically or behaviorally to changes in their environment to become more suited to it. This is a report of free-ranging bottlenose dolphins’ behavioral adaptations to environmental changes from coastal construction in prime habitat. Construction was a 5-year bridge removal and replacement project in a tidal inlet along west central Florida’s Gulf of Mexico coastline. It occurred in two consecutive 2.5-year phases to replace the west and east lanes, respectively. Lane phases involved demolition/removal of above-water cement structures, below-water cement structures, and reinstallation of below + above water cement structures (N = 2,098 photos). Data were longitudinal (11 years: 2005–2016, N = 1,219 surveys 2–4 times/week/11 years, N = 4,753 dolphins, 591.95 h of observation in the construction zone, 126 before-construction surveys, 568 during-construction surveys, 525 after-construction surveys). The dependent variable was numbers of dolphins (count) in the immediate construction zone. Three analyses examined presence/absence, total numbers of dolphins, and numbers of dolphins engaged in five behavior states (forage-feeding, socializing, direct travel, meandering travel, and mixed states) across construction. Analyses were GLIMMIX generalized linear models for logistic and negative binomial regressions to account for observation time differences as an exposure (offset) variable. Results showed a higher probability of dolphin presence than absence before construction began, more total dolphins before construction, and significant decreases in the numbers of feeding but not socializing dolphins. Significant changes in temporal rhythms also revealed finer-grained adaptations. Conclusions were that the dolphins adapted to construction in two ways, by establishing feeding locations beyond the disturbed construction zone and shifting temporal rhythms of behaviors that they continued to exhibit in the construction zone to later in the day when construction activities were minimized. This is the first study to suggest that the dolphins learned to cope with coastal construction with variable adjustments.

scholarly journals Are highway constructions associated with increased transport incidents? A case study of NSW Pacific Highway construction zones 2011-16

2021 ◽  
Vol 32 (1) ◽  
pp. 17-23
Author(s):  
Pooria Sarrami ◽  
Patricia Lemin ◽  
Zsolt Balogh ◽  
Hardeep Singh ◽  
Hassan Assareh ◽  
...  
Keyword(s):  
Injury Severity ◽  
Highway Construction ◽  
P Value ◽  
Traffic Incidents ◽  
Road Users ◽  
South Wales ◽  
Significant Difference ◽  
Construction Zone ◽  
Construction Zones ◽  
Construction Periods

Transport incidents are among the major causes of trauma and injury in Australia and worldwide. While improving infrastructure can decrease the rate of incidents, the required construction imposes challenges regarding simultaneous public use of the relevant road sections. This study focused on construction zones along the New South Wales (NSW) Pacific Highway. We aimed to investigate if the rate of people who had major trauma as a result of a transport incident in a construction zone was higher than the rate of people with similar incidents at other times. This was a retrospective study, conducted by screening the data of patients admitted to the trauma services, or who died due to traffic incidents on the NSW Pacific Highway 2011-2016. We identified 35 causalities who experienced a traffic incident within a construction zone, 19 of these incidents occurred during the construction dates and 16 before or after those dates. The rate of casualty in construction periods was 2.21 per 1000 days, which is significantly higher than the rate in non-construction periods (1.2 per 1000 days, p-value: 0.037). There was no significant difference between the age, injury severity score and mortality rate of casualties who had an incident during the construction dates and those who had an incident in non-construction periods. This study indicated that the rate of incidents increased at NSW Pacific Highway construction zones during construction periods. More investigation is needed to improve the safety of road users during highway road constructions.

Fine structure of the tail in the spermatozoa of the Mexican axolotl Ambystoma mexicanum

1983 ◽  
Vol 41 ◽  
pp. 564-565
Author(s):  
Ezzatollah Keyhani
Keyword(s):  
Fine Structure ◽  
Vertical Section ◽  
Neck Region ◽  
Longitudinal Section ◽  
Ambystoma Mexicanum ◽  
Present Communication ◽  
Mexican Axolotl ◽  
Extreme Degree ◽  
The Subject ◽  
Construction Zone

The structure of the spermatozoa represents an extreme degree of diversity among the various species of metazoa. This diversity is most probably a reflection of the adaptation to the variable conditions for fertilization. The Axolotl sperm consists of head and tail. The tail is the subject of the present communication. It consists of neck region, intermediary and principal pieces. I. The neck (∼10μm) is inserted in the nucleus and can be designated as a region between immediately above the mitochondria (a construction zone between nucleus and sustained filament) and the upper region of the anterior centriole. In longitudinal section (Fig.l) it consists of a pair of centrioles and a mass of granular fibrillar substance. The anterior centriole (0.26 x 0.5μm) appears free, while the posterior one is continuous with the flagellum. The appearance of two central filaments indicates the transition between posterior centriole and flagellum. In front of the centrioles,there is a mass of granulo-fibrillar substance (Fig.l) which in vertical section (Fig.4) appear to be semi-circular and relatively thick (0.3μm). The granulo-fibriliar substance protrude outward (Fig.l,3,4) and thus the term protuberance seems appropriate. II.

Comprehensive Settlement of the Gravitational Drilling Platform on the Seismic Action

2015 ◽  
Vol 725-726 ◽  
pp. 257-262
Author(s):  
Luu Ba Thien ◽  
Vladimir Korovkin
Keyword(s):  
Plastic Deformation ◽  
Variable Stiffness ◽  
Added Mass ◽  
Seismic Load ◽  
Seismic Action ◽  
Foundation Soil ◽  
Seismic Vibrations ◽  
Construction Zone ◽  
Seismic Impact ◽  
Settlement Schemes

A comprehensive settlement on the seismic impact of the gravitational platform, which in two settlement schemes consistently takes into account the vertical and horizontal impact. The first (quasi-static) takes into account the vertical oscillations of buildings, taking into account the added mass on the assumption that the construction zone near the epicenter. This foundation is regarded as a beam lying on the ground, a variable stiffness of the foundation soil in view of plastic deformation. The second design scheme allows for horizontal seismic effects in the assumption that the epicenter is removed from the structure. To account for the seismic load from vibrations Colon dynamic spectral method is used as an expansion of the resulting seismic vibrations in a row on the main forms of oscillations.

Sign in / Sign up

Export Citation Format

Share Document