FIELD EXPERIMENT OF TRAIN-INDUCED WIND PRESSURE ON PLATFORM SCREEN DOOR AT SUBWAY STATION

2010 ◽  
Vol 18 (04) ◽  
pp. 309-316 ◽  
Author(s):  
JUNG-YUP KIM
Keyword(s):  
Field Experiment ◽  
Field Test ◽  
Wind Pressure ◽  
Subway Station ◽  
Train Operation

In a bid to evaluate the train wind pressure on platform screen door installed on the platform of the subway station, the field test was conducted in existing Seoul Metropolitan Subway Line 2 in operation now. Variations in wind pressure on platform screen door, which were caused by the running train were measured depending on four different train operation patterns. The highest pressure of 28.1 kgf/m2 was indicated on platform screen doors while two trains were passing the platform in different directions at a speed of 60 km/h.

Assessing Individual Evacuation Performance Moving on Long Stairs in a Subway Station: A Field Experiment

2021 ◽  
Author(s):  
Kongjin Zhu ◽  
Bangyu Wang ◽  
Jun Wang ◽  
Ning Guo ◽  
Peng Mei
Keyword(s):  
Field Experiment ◽  
Subway Station

Field Test Research on Environmental Noise Characteristics in the Throat Area of Metro Depot

2021 ◽  
Vol 263 (5) ◽  
pp. 1818-1822
Author(s):  
Lei He ◽  
Ruixiang Song ◽  
Jie Yang ◽  
Yubin Wu ◽  
Yanan Wu
Keyword(s):  
Field Test ◽  
Open Space ◽  
Noise Pollution ◽  
Environmental Noise ◽  
Statistical Characteristics ◽  
Small Radius ◽  
Time Frequency ◽  
Noise Characteristics ◽  
Train Operation ◽  
Surrounding Areas

Environmental noise pollution is the primary environmental problem faced by the superstructure of metro depots. The throat area of depot is prone to high wheel-rail impact noise due to the use of seam lines, multiple joints, turnouts and small radius curves. The noise exerts through fire and ventilation openings on the side walls, which may cause high annoyance to the residents in the superstructures both on the upper cover and surrounding areas. In this paper, a field test was condected on the environmental noise in the throat area of metro depot. The noise of the trackside and adjacent open space were recorded, and the time-frequency domain characteristics and statistical characteristics and attenuation law of the noise generated by train operation in the throat area were analyzed. The research results have certain guiding significance for the prediction and control of noise in the throat area of the depot.

scholarly journals DIAGNOSIS DAN PENGENDALIAN PENYAKIT ANTRAKNOSA PADA PAKIS DENGAN FUNGISIDA

2011 ◽  
Vol 11 (2) ◽  
pp. 194-200
Author(s):  
Christanti Sumardiyono ◽  
Tri Joko ◽  
Yuli Kristiawati ◽  
Yufita Dwi Chinta
Keyword(s):  
Field Experiment ◽  
Field Test ◽  
Concentration Field ◽  
Apple Fruit ◽  
Field Application ◽  
In Vitro Test ◽  
Mycelium Growth ◽  
Vitro Test ◽  
Poisoned Food Technique

Leatherleaf fern is an important export commodity of floriculture.  One of the most destructive disease on leatherleaf fern is anthracnose. The aim of this study was to identify the causal agent of antracnose-like disease on leatherleaf fern, to detect the pathogen in soil, and to control the disease with fungicides. Diagnosis was done with modified Koch Postulate. Identification of the pathogen was done by direct observation from the symptom under microscope. Isolation of the pathogen from die back leaves and soil was done on PDA. Inoculation was done on apple fruit indicator. The tested fungicides were difeconazole, benomyl, mancozeb+cymoxanil 8/64, tebuconazole, acebenzolar e-methyl+mancozeb 1/48, mancozeb, and 73.8% mancozeb + 6.2% carbendazim. In vitro test was done by poisoned food technique at 0% (checked), 0.025%, 0.05%, 0.1%, 0.2% and 0.4% concentration, while field test was done at 0.4% level concentration. Field application of pesticides was conducted by spraying twice a week for eight weeks. The result showed that the anthracnose-like disease of leatherleaf fern was anthracnose caused by Colletotrichum sp. The pathogen was found and survived in soil. In vitro test showed that 0.4% was the best concentration to inhibit mycelium growth. Based on this result, field experiment  was done on 0.4% concentration of fungicides. The mixture of 73.8% mancozeb and 6.2% carbendazim  was the most effective fungicide to inhibit Colletotrichum sp. in vitro. Spraying with 0.4% concentration eight times significantly reduced disease intensity in the field.

The Simulation Experiment and the Similarity of Chloride Ion Erosion in Concrete under the Tidal Zone in the Marine Environment

2013 ◽  
Vol 405-408 ◽  
pp. 2724-2729
Author(s):  
Yang Yang Pan ◽  
Jun Huang ◽  
Jun Zhi Zhang ◽  
Han Yang Jin ◽  
Xue Mei Zhou
Keyword(s):  
Field Experiment ◽  
Field Test ◽  
Marine Environment ◽  
Simulation Experiment ◽  
Environmental Parameters ◽  
Chloride Ion ◽  
Tidal Zone ◽  
Corrosion Tests ◽  
Similarity Relationship ◽  
Ion Erosion

To obtain the similarity relationship between the simulation experiment and the field experiment of chloride ion erosion in the concrete under the marine environment, on the basis of chloride ion ingress concrete under the onsite marine environment in Zhou Shan, a series of field corrosion tests involving the chloride ion ingression in the costal tidal zone are carried out. By simulating the environmental parameters of the tidal zone, the onsite environmental elements are simulated and modified in order to accelerate the ingress of chloride ion in the concrete. And the accelerated experiment is designed and completed. By comparing the results from the indoor accelerated experiment and the field test, the similarity of the main ingress parameters between the indoor and onsite durability experiment is analyzed.

scholarly journals Pertumbuhan dan Produksi Galur-Galur Padi Toleran Fe Generasi F8 Hasil Persilangan IR64 x Hawara Bunar di Lahan Pasang Surut, Banyuasin, Sumatera Selatan

2016 ◽  
Vol 1 (2) ◽  
pp. 47-53
Author(s):  
LA KOLAKA ◽  
MUNIF GHULAMAHDI ◽  
. MIFTAHUDIN
Keyword(s):  
Field Experiment ◽  
Field Test ◽  
Soil Type ◽  
Soil Acidity ◽  
Marginal Lands ◽  
Ril Population ◽  
Type C ◽  
Productive Land ◽  
Fe Toxicity ◽  
Better Than

Utilization of marginal lands such as tidal land should be done to increase rice production as a solution of the decreasing productive land. However, rice cultivation in such land will be affected by low soil fertility, soil acidity and Fe toxicity. Fe-tolerant varieties are needed to overcome those problems. The objective of the research was to analyze the growth and production of Fe tolerant rice lines in tidal soil type C, Banyuasin, South Sumatera. Screening for Fe-tolerant character of 54 rice lines from the F8 RIL population derived from a cross between rice var. IR64 and var. Hawara Bunar using hydroponic technique under 1000 ppm Fe resulted 25 Fe-tolerant lines. The field test of 25 putative tolerant rice lines, at the tidal land in Banyuurip, Banyuasin, showed that the most lines grew better than that of var. Hawara Bunar parent. Several lines produced yield higher than that of var. Hawara Bunar parent. The field experiment resulted two rice lines, which were IRH108 and IRH195 that potential for further studies. 

scholarly journals Location of rut stands vs. mating opportunities in Przewalski’s gazelle: A field test of the “Resource-based Hypothesis” and “Female Traffic Version of the Hotspot Hypothesis”

2011 ◽  
Vol 57 (6) ◽  
pp. 701-708 ◽  
Author(s):  
Zhangqiang You ◽  
Zhigang Jiang ◽  
Chunwang Li
Keyword(s):  
Tibetan Plateau ◽  
Field Experiment ◽  
Food Availability ◽  
Field Test ◽  
Food Resources ◽  
Mating Tactics ◽  
Mating Opportunities ◽  
Daily Travel

Abstract We studied the mating tactics of Przewalski’s gazelle on the Qinghai-Tibetan Plateau from 2002 to 2005. Przewalski’s gazelle is a cluster mating animal whereby female groups, including juveniles, travel to and from their resting grounds along fixed routes and dominant males stand on or near these travel routes during rut. To explain rut patterns in male gazelles, we tested predictions arising from the “Resource-based Hypothesis” and “Female Traffic Version of the Hotspot Hypothesis”. We marked the location of each rut stand and female travel route, measured food availability in each rut stand and recorded the mating opportunities of rut stand owners. We also conducted a field experiment to force female groups to change their daily travel route, and observed whether males abandon their original rut stands and shift their rut stands to new travel routes of females during the 3rd rut. We found that: (1) male gazelle defending rut stands closer to a female travel route had a higher chance of mating; (2) food resources within rut stands had no effect on mating opportunities of the rut stand owner; (3) when the female travel route was obstructed, female groups changed grazing sites, and all males abandoned their original rut stands and defended new rut stands along the new female travel route. In conclusion, the location of rut stands in relation to female travel routes is the ultimate factor for consolidating mating opportunities in male gazelle, supporting the “Female Route Version of Hotspot Hypothesis”.

Do Monetary Incentives Undermine Performance on Intrinsically Enjoyable Tasks? A Field Test

2020 ◽  
pp. 1-46
Author(s):  
Constança Esteves-Sorenson ◽  
Robert Broce
Keyword(s):  
Field Experiment ◽  
Performance Measures ◽  
Field Test ◽  
Performance Metrics ◽  
Crowding Out ◽  
Monetary Incentives ◽  
Intrinsic Interest ◽  
Conflicting Evidence ◽  
Output Quality ◽  
Economics Model

Economists have long been intrigued by an influential literature in psychology positing that monetary pay lowers performance on enjoyable tasks by crowding out agents' intrinsic interest in them. But typical experiments in this literature do not report a full set of performance metrics, which might reveal conflicting evidence on crowding out. Further, they may suffer from confounds. To evaluate these issues, we review over 100 prior tests and run a field experiment building on the canonical two-session test for crowding out wherein agents receive pay for an interesting activity in session one that is withdrawn unexpectedly in session two. We test whether pay harms performance using a comprehensive set of performance measures, and if so, whether unmet pay expectations might also contribute to this decline. Our results on output, productivity and quits are most consistent with a standard economics model than with a crowding out one. Additional, though more speculative, evidence suggests that unmet pay expectations may harm output quality.

Field test for environmental correlates of dispersal in hedgehogs Erinaceus europaeus

2001 ◽  
Vol 70 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Doncaster C. Patrick ◽  
Rondinini Carlo ◽  
Johnson Paul C. D.
Keyword(s):  
Field Test ◽  
Erinaceus Europaeus ◽  
Environmental Correlates
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