162,753 research outputs found
In Plane Loaded Glass Panes in Façades, Temperature Loads in Fixed Bonded Glass Panes
No full textThe author discusses the use of glass panes as transparent stability elements in vertical façade structures subjected to in-plane loads including temperature loads. In the present façade architecture, glass is normally used non-structural. The only mechanical requirement is to resist transversal loads, which determines the thickness of the glass pane. Thus, glass panes are not used to stabilize the structural system. However, glass panes have excellent in-plane stiffness qualities, and providing appropriate connections between glass and the supporting structure, this in-plane stiffness can possibly attribute to the building’s stability. Temperature loads on the glass avoid making a totally stiff connection between glass and structure, whereas this would be required for the stability aspect. To investigate this problem, this paper presents two conceptual connection designs between glass and structure. For temperature loads, these connections will be studied using the theory of plates. It is shown that a bond line as connection, having a large stiffness directly leads to a uniformly distribution equal to almost the complete temperature load. If the shear stiffness of the bond line is taken into account, a complex stress pattern in the glass pane occurs, even for a geometrical and physical linear approach. Thus, the impact of the temperature loads is significant for all glass panes (plate level) and is independent on façade size and this in contrast with the collaboration of the glass panes and supporting structure to resist laterally mechanical loads (structure level). Research will continue with experiments to verify the theoretical derived results and with the development of finite element models to study the complex stress pattern in the glass pane, dependent on connection type and load case
School Attendance, Child Labor and Cash Transfers. An Impact Evaluation of PANES
No full textIn this paper we analyze the impact an emergency social assistance program, PANES, on school attendance and child labour. The program was carried out in Uruguay from April 2005 to December 2007. Specifically, we analyze the effects of the cash transfer component of the plan (Ingreso Ciudadano), and explore potential explanatory channels such as labour market outcomes, income and awareness of conditionalities. This research is based on a panel of successful and unsuccessful applicants to PANES. The first wave uses the administrative records of the program and the second wave is a follow-up survey that was gathered two months after the program ended and was specifically designed to carry out the impact evaluation of the program. In order to check the robustness of our results, we provide evidence based on two different identification strategies: a regression discontinuity approach using data from the second wave of the panel, and a difference-in-difference approach that exploits the longitudinal nature of the collected data. Our results indicate that the program did not affect school attendance or child labour, whether children are considered as one group or are disaggregated by age or sex. We also do not find any impact on household income, which suggests that income substitution does not explain the lack of results in terms of schooling. It therefore appears that either the size of the transfer was not generous enough to promote school attendance or that the determinants of child school attendance are more complex and require complementary interventions. Our results are particularly relevant for understanding of the role of cash transfers in middle-income countries where attendance rates at primary school are already high, and where the main challenge is to keep students in school at the secondary level. The data also allows us to explore the role of conditionalities. Only a small share of households was aware of the school enrolment condition (20%). Conditionalities were announced and are present in other social security programs in Uruguay, but were ultimately not monitored in this case. We did not find the conditionality to have any robust impact (as perceived by the household) on children’s school enrolment.Cash transfer program; Impact evaluation; School attendance, Child labour, Uruguay
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Glass in Late Antiquity in the Near East
No full text© 2007 Brill The document attached has been archived with permission from the publisher. An external link to the publisher’s copy is included.This paper seeks to explore some of the possible connections between three late antique strands of glass technology and application in the Near East: windows, lighting, and finally, recycling. Glass has long been acknowledged to have influenced two major innovations in the use of internal space within the Roman world: firstly, during the Principate, when window-panes were first applied to bath-houses to maintain humidity and temperatures, whilst casting light into dark interiors, and secondly, in the 4th c. A.D., when oil-lights made of glass were finally adopted as an effective medium for ceiling-lighting.http://www.brill.nl/default.aspx?partid=210&pid=2895
Thermal performance of vacuum glazing with tempered glass panes
No full textThe thermal performance (U-value) of 0.4 × 0.4 m and 1 × 1 m double vacuum glazing (DVG) and triple vacuum glazing (TVG) using annealed and tempered glass panes with pillar separations of 25 and 50 mm respectively was simulated. It was found that (1) for both dimensions of DVG with 0.03 emittance low-emittance (low-e) coatings, the U-values at the centre of the glazing area of the DVG made of annealed and tempered glass panes were 0.57 and 0.30 Wm−2 K−1, a reduction of 47.4 %; (2) for both dimensions of TVG with 0.03 emittance low-e coating, the U-values at the centre of glazing area of the TVG with annealed and tempered glass panes were 0.28 and 0.11 Wm−2 K−1, a reduction of 60.7 %. The reduction in U-values for both DVG and TVG results from the significant reduction in pillar number, leading to the large reduction in heat conduction through the pillar arrays. The reduction in U-values from using tempered glass panes instead of annealed glass panes for TVG is larger than that for DVG; this is because the radiative heat transfer of TVG with three glass panes is much lower than that in DVG with two glass panes; therefore, the heat conduction through the pillar array in TVG plays a larger role compared with that in DVG. The reduction in pillar number in TVG results in a larger reduction in U-value compared to DVG; thus, using tempered glass panes in TVG confers a greater advantage compared to DVG, given that DVG can also achieve a large reduction in U-value when switching from using annealed glass panes to tempered glass pane
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Mr. Melvin J. Collier, RWWL AUC, June 2011
No full textThis video is a conversation with Mr. Melvin J. Collier. Mr. Collier talks about his book, "From Mississippi to Africa: A Journey of Discovery". Daniel Le, AUC Woodruff Library, is the interviewer
A Tripartite Post-Recession Rebalancing
No full textIn this latest Advance & Rutgers Report, entitled “A Tripartite Post-Recession Rebalancing,” Dean James W. Hughes and Professor Joseph J. Seneca deliver an incisive assessment of the current market conditions and obstacles in the path of our economic recovery. They offer a statistical cautionary tale that the private and public sector need to hear and acknowledge in order for the economy to make continued progress.This report was published as Issue Paper Number 7, November 2011, in Advance & Rutgers Report
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