In this paper, the elastic-plastic displacement shape of the specimen surface during the experiment of compression perpendicular to the grain of the wood was measured using digital image correlation. And, it becomes p...
详细信息
This paper finds and discusses the features of buckling and inelastic response on steel hexagonally latticed plates for cyclic shear deformation. Cyclic tests of four steel latticed plates with various hexagonal shape...
详细信息
This report examines the relationship between public annoyance with aircraft noise, objective measures of the noise itself, and mediating social or psychological conditions which affect the noise-annoyance relationshi...
This report examines the relationship between public annoyance with aircraft noise, objective measures of the noise itself, and mediating social or psychological conditions which affect the noise-annoyance relationship. The noise readings and interviews were gathered in areas within 12 miles of the major airports serving Atlanta, Dallas, Denver and Los Angeles. A total of 4212 hour-long interviews were conducted in the survey period of May and June, 1967. Noise measurements were made shortly before and concurrent with interviewing in the sampled areas. The noise measures evaluated include the composite noise rating (CNR), and modified noise and number index (NNI), noise exposure forecast (NEF), and composite noise index (CNI). An additional measure of another type was also investigated: the cumulative time during the day in which the speech interference level (SIL) of aircraft noise exceeded certain values. From the analysis, it was apparent that CNR and NNI are essentially interchangeable, and are rather well correlated both with NEF and with the logarithms of the SIL duration measures. Seven major social-psychological predictors of annoyance are also identified. In order of importance (determined by their ability, in combination with the noise measures, to predict annoyance) the measures are: fear of aircraft crashing in the neighborhood; distance from the airport; susceptibility to noise; noise adaptability; city of residence; belief in misfeasance in the aircraft or airport industries; and the extent to which the airport is seen as important to the local economy. These variables, selected from 53 correlated predictors of annoyance, were found to be consistently the most powerful predictors of annoyance measure—annoyance, V —when used in conjunction with a noise predictor. Of the noise predictors studied, CNR proved to be the most stable in the presence of the social predictors. Based on this analysis, it is concluded that the generalized predictive equation for
Just as in all pre-industrial societies, the historic structures in Anatolia derive from two materials, timber and stone. In timber construction, two categories, namely heaped construction and skeletal construction, a...
详细信息
ISBN:
(纸本)9781845641962
Just as in all pre-industrial societies, the historic structures in Anatolia derive from two materials, timber and stone. In timber construction, two categories, namely heaped construction and skeletal construction, are clearly distinguishable. In research to date, it can be seen that these categories have been clearly defined and explained. Yet, structural definitions in masonry buildings are mostly limited to the term heaped construction. However, in traditional masonry structures, it is possible to see, whether clearly or under a layer, a construction that reminds one of skeletal construction. In this paper, historical masonry structures that have been often described as heaped construction, but which actually contain both heaped and skeletal system characteristics, will be discussed. This dual-system will be examined with examples from Ottoman mosques and masonry houses in Anatolia.
This study aims to reveal the spatial structural characteristics of 1,652 Ethnic-Minority Villages(EMV)in China and to analyze the mechanisms driving their spatial *** are a special type of settlement space that prese...
详细信息
This study aims to reveal the spatial structural characteristics of 1,652 Ethnic-Minority Villages(EMV)in China and to analyze the mechanisms driving their spatial *** are a special type of settlement space that preserve a large number of historical traces of the ethnic culture of ancient *** are important carriers of China’s excellent traditional culture and are key to the implementation of rural revitalization *** this study,1652 EMV in China were selected as the research *** Nearest Neighbor Index,kernel density,and spatial autocorrelation index were employed to reveal the spatial structural characteristics of minority *** network models,spatial lag models,and geographical detectors were used to analyze the formation mechanism of spatial heterogeneity in *** results indicate that:(1)EMV exhibit significant spatial differentiation characterized by“single-core with multiple surrounding sub-centers,”“polarization between east and west,”“decreasing quantity from southwest to east coast to northeast to northwest,”and“large dispersion with small agglomeration.”(2)EMV are mainly distributed in areas rich in intangible cultural heritage,with high vegetation coverage and low altitude,far from central cities,and having limited arable land and an underdeveloped economy and transportation,particularly in shaded or riverbank areas.(3)Distance from the nearest river(X3),distance from central cities(X8),national intangible cultural heritage(X9),and NDVI(X10)were the main driving factors affecting the spatial distribution of EMV,whereas elevation(X1)and GDP(X5)had the weakest *** EMV are a relatively unique territorial spatial unit,the identification of their spatial heterogeneity characteristics not only deepens the research content of settlement geography,but also involves the assessment,protection,and development of Minority Villages,which is of great significance for the inheritance and utilization of excellent
Architects in the 21st Century are required to work as key leaders of the design team in developing projects from inception to completion. Solid teamwork is essential for success in the architecture profession and the...
详细信息
Architects in the 21st Century are required to work as key leaders of the design team in developing projects from inception to completion. Solid teamwork is essential for success in the architecture profession and the construction industry. Teaching teamwork to undergraduatearchitecture students has its challenges and rewards. At the University of Hartford we have chosen to teach our architecture design students team projects through team teaching. Projects involving teamwork offer considerable learning opportunities for the students. Working together and setting an example for students also offers considerable teaching opportunities for design faculty members. Team-taught courses offer numerous advantages for the students, faculty, administration, institution, and the profession. Many of these advantages will prove beneficial to the architecture students overall learning experience and serve to enhance their team building skills.
In 2011, many roof bearings in large span facilities were damaged severely by the Pacific coast of Tohoku earthquake. Some of them were designed as slide bearings to release the thrust caused by the weight of roof. In...
详细信息
The expansion and densification of cities should be planned to ensure minimum health conditions for buildings. In this sense, this study is interested in the right to solar access for buildings using the analysis of s...
详细信息
In 2011, some roof bearings of gymnasiums suffered severe damage by the pacific coast of Tohoku earthquake. Typical damage was the elongation and break of the anchor bolts or crush of base mortar. Since gymnasiums are...
详细信息
In 2011, some roof bearings of gymnasiums suffered severe damage by the pacific coast of Tohoku earthquake. Typical damage was the elongation and break of the anchor bolts or crush of base mortar. Since gymnasiums are used as shelters for the neighboring residents in earthquake disasters, damage prevention of roof bearings are required. Roof bearings are the connections between the lower RC frame and the steel roof. They are similar to conventional steel exposed column bases. However, the dominant stress and the mechanism to resist the horizontal forces of the roof bearings are different from those of steel exposed column bases. The dominant stress of steel exposed column bases is axial and bending stress while shear stress of the anchor bolts is dominant for roof bearings since the vertical load is extremely lower than that in steel exposed column bases in ordinary buildings. In present paper, the full-scale cyclic shear loading tests of roof bearings were carried out to investigate the fracture behavior of roof bearings and the restoring force characteristics were also evaluated. Three different height (20mm, 50mm or 100mm) of the base mortar were used to compare the fracture behavior and the restoring force characteristics. Moreover, the friction tests were conducted to investigate the friction coefficient between the base mortar and base plate. It was found from the results of friction tests that the friction coefficient between the base mortar and the base plate was about 0.5. This result agrees very well with the friction coefficient given in the AIJ recommendation for Design of Connections in Steel Structures. The fracture behavior and the restoring force characteristics of roof bearings are summarized as follows. The anchor bolts were leaned after the base plate contacted the anchor bolts. After that, the base mortar cracked since the deformed anchor bolts pushed it out. After the tests, the base mortar was crushed especially outside of anchor bolts. When th
Monetary authorities globally have studied central bank digital currency (CBDC) for wholesale and retail applications since the 1990s. Besides countering private cryptocurrencies' influence, central banks have als...
详细信息
暂无评论