• Title/Summary/Keyword: Target Amounts

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Impact of Target Amounts on Donation Behavior: Insights from GoFundMe Data

  • Sohyeon Park
    • International Journal of Internet, Broadcasting and Communication
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    • v.16 no.3
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    • pp.305-312
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    • 2024
  • This field study explores how varying target amounts influence donation behavior using real-world data from the online fundraising platform GoFundMe. We analyzed donation data across four different target amounts and found significant differences in donation patterns. Lower target amounts were found to encourage higher individual donations, while excessively high targets were less effective. The data revealed that donors tend to be more responsive to campaigns with achievable goals, possibly due to a perceived higher impact of their contributions. Conversely, campaigns with unrealistically high targets often struggled to gain traction, suggesting a potential donor deterrent effect. We believe these findings provide practical insights for nonprofits on setting realistic and achievable target amounts to maximize donations. Our study underscores the importance of strategic target setting in enhancing fundraising outcomes. We conclude that this insight has significant implications for how non-profit organizations approach their fundraising strategies, potentially improving the effectiveness of online charitable campaigns.

Treatability Evaluation of N-Hexadecane and 1-Methylnaphthalene during Fenton Reaction

  • Chae, Myung-Soo;Woo, Sung-Geun;Yang, Jae-Kyu;Bae, Sei-Dal;Choi, Sang-Il
    • Environmental Engineering Research
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    • v.17 no.4
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    • pp.217-225
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    • 2012
  • In this study, the treatability of two target contaminants during the Fenton reaction, n-hexadecane and 1-methylnaphthalene, was evaluated as a function of the amounts of $FeCl_2$ and $H_2O_2$ injected into open and closed reaction systems. In the Fenton reaction of n-hexadecane and 1-methylnaphthalene, the mass recovery of the target contaminants was above 95% in the closed system. However, when the Fenton reaction was performed with high amounts of $H_2O_2$ and $FeCl_2$ injected in the open system, a reduction of approximately 40% of the initial mass of 1-methylnaphthalene was observed. This trend may be explained by the unique physical properties of 1-methylnaphthalene, which has higher volatility than n-hexadecane. Further, this trend was well correlated with the rise in high temperature at the initial reaction stage. Considering the mass recovery of the two target contaminants, the reaction temperature, and the residual concentration of $H_2O_2$ at different amounts of $FeCl_2$ and $H_2O_2$ injected, it can be suggested that the Fenton reaction should be performed with controlled conditions that can provide a suitable reaction environment between oxidant and contaminants.

Estimates the Non-Stationary Probable Precipitation Using a Power Model (Power 모형을 이용한 비정상성 확률강수량 산정)

  • Kim, Gwangseob;Lee, Gichun;Kim, Beungkown
    • Journal of The Korean Society of Agricultural Engineers
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    • v.56 no.4
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    • pp.29-39
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    • 2014
  • In this study, we performed a non-stationary frequency analysis using a power model and the model was applied for Seoul, Daegu, Daejeon, Mokpo sites in Korea to estimate the probable precipitation amount at the target years (2020, 2050, 2080). We used the annual maximum precipitation of 24 hours duration of precipitation using data from 1973 to 2009. We compared results to that of non-stationary analyses using the linear and logistic regression. The probable precipitation amounts using linear regression showed very large increase in the long term projection, while the logistic regression resulted in similar amounts for different target years because the logistic function converges before 2020. But the probable precipitation amount for the target years using a power model showed reasonable results suggesting that power model be able to reflect the increase of hydrologic extremes reasonably well.

Application of a Non-stationary Frequency Analysis Method for Estimating Probable Precipitation in Korea (전국 확률강수량 산정을 위한 비정상성 빈도해석 기법의 적용)

  • Kim, Gwang-Seob;Lee, Gi-Chun
    • Journal of The Korean Society of Agricultural Engineers
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    • v.54 no.5
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    • pp.141-153
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    • 2012
  • In this study, we estimated probable precipitation amounts at the target year (2020, 2030, 2040) of 55 weather stations in Korea using the 24 hour annual maximum precipitation data from 1973 through 2009 which should be useful for management of agricultural reservoirs. Not only trend tests but also non-stationary tests were performed and non-stationary frequency analysis were conducted to all of 55 sites. Gumbel distribution was chosen and probability weighted moment method was used to estimate model parameters. The behavior of the mean of extreme precipitation data, scale parameter, and location parameter were analyzed. The probable precipitation amount at the target year was estimated by a non-stationary frequency analysis using the linear regression analysis for the mean of extreme precipitation data, scale parameter, and location parameter. Overall results demonstrated that the probable precipitation amounts using the non-stationary frequency analysis were overestimated. There were large increase of the probable precipitation amounts of middle part of Korea and decrease at several sites in Southern part. The non-stationary frequency analysis using a linear model should be applicable to relatively short projection periods.

IFRS Reconciliation Adjustment and Subsequent Meet or Beat Target Earnings

  • Ha, Mihye;Kang, Minjung
    • The Journal of Asian Finance, Economics and Business
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    • v.6 no.1
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    • pp.33-45
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    • 2019
  • This study analyzed the association between IFRS adjustments, measured with the IFRS reconciliations, and the subsequent meeting of target earnings. IFRS adjustments include the amounts to be adjusted intentionally, as well as the differences in accounting standards. This study estimated intentional IFRS adjustments and analyzed their association with meeting target earnings. As the results of our analysis, meeting target earnings was associated positively with intentional IFRS adjustments for the total assets, was negatively associated with them for current assets, and was positively associated with them for non-current assets. Since understatement of current assets can be realized into earnings in a short period of time, it seems that current assets were underestimated intentionally in order to meet target earnings subsequently. In contrast, it is considered that non-current assets were overestimated to make them more likely to meet target earnings either by increasing the firm size or by improving financial solvency. The results of this study imply that IFRS adjustments are useful to manage earnings for meeting target earnings. Since accounting standards may be established and revised constantly, which adjustments for them may occur, the results on IFRS adjustments are expected to have implications for investors, policy-makers, and standards establishment entities.

Influence of sputtering parameter on the properties of silver-doped zinc oxide sputtered films

  • S. H. Jeong;Lee, S. B.;J.H. Boo
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2003.10a
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    • pp.58-58
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    • 2003
  • Silver doped ZnO (SZO) films were prepared by rf magnetron sputtering on glass substrates with extraordinary designed ZnO target. With the doping source for target, use AgNO$_3$ powder on a various rate (0, 2, and 4 wt.%). We investigated dependence of coating parameter such as dopant content in target and substrate temperature in the SZO films. The SZO films have a preferred orientation in the (002) direction. As amounts of the Ag dopant in the target were increased, the crystallinity and the transmittance and optical band gap were decreased. And the substrate temperature were increased, the crystallinity and the transmittance were increased. But the crystallinity and the transmittance of SZO films were retrograde at 200$^{\circ}C$. Upside facts were related with composition. In addition, the Oxygen K-edge features of the SZO films were investigated by using near edge X-ray absorption fine structure (NEXAFS) spectroscopy. Changes of optical band gap of the SZO films were explained compared with XRD, XPS and NEXAFS spectra.

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A Study on Characterization and Modeling of Shallow Trench Isolation in Oxide Chemical Mechanical Polishing

  • Kim, Sang-Yong;Chung, Hun-Sang
    • Transactions on Electrical and Electronic Materials
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    • v.2 no.3
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    • pp.24-27
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    • 2001
  • The end point of oxide chemical mechanical polishing (CMP) have determined by polishing time calculated from removal rate and target thickness of oxide. This study is about control of oxide removal amounts on the shallow trench isolation (STI) patterned wafers using removal rate and thickness of blanket (non-patterned) wafers. At first, it was investigated the removal properties of PETEOS blanket wafers, and then it was compared with the removal properties and the planarization (step height) as a function of polishing time of the specific STI patterned wafers. We found that there is a relationship between the oxide removal amounts of blanket and patterned wafers. We analyzed this relationship, and the post CMP thickness of patterned wafers could be controlled by removal rate and removal target thickness of blanket wafers. As the result of correlation analysis, we confirmed that there was the strong correlation between patterned and blanket wafer (correlation factor: 0.7109). So, we could confirm the repeatability as applying for STI CMP process from the obtained linear formula. As the result of repeatability test, the differences of calculated polishing time and actual polishing time was about 3.48 seconds. If this time is converted into the thickness, then it is from 104 $\AA$ to 167 $\AA$. It is possible to be ignored because process margin is about 1800 $\AA$.

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A study on the Development of the Mix Design System for High-Strength Concrete. (고강도 콘크리트의 배합설계 시스템 개발에 관한 연구)

  • 오호진;장판기;박훈규;장일영
    • Proceedings of the Korea Concrete Institute Conference
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    • 1998.04b
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    • pp.719-724
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    • 1998
  • It is proposed in this paper to develop the rational mix design system of High-strength concrete which is adjusted in the domestic circumstances. 1) Collect a lots of data in order to introduce the optimum mix design which has relation among material variables which compose High-strength concrete and run by using SAS (Statistical analysis system) which is one of multivariate statistical analysis method. 2) Select the important material variables for mix design of High-strength concrete by major component analysis and propose the standard range of each material variable along the target strengths. From the results of this study, it was proposed the range of proper material variables in domestic circumstance, which are W/C, S/A, air and admixture amounts, etc, at the target strengths for concrete kind. Also it was developed the optimum mix design program of High-strength concrete according to target strength and size of aggregate and made mix design ease in domestic construction site.

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Studies on the Characteristics of Medical X-ray Films Using the High Energy Radiation (고에너지 방사선을 이용한 의학용 x-ray 필름 특성연구)

  • Lee, Jae-Sung;Heo, Hoon
    • Journal of the Korean Graphic Arts Communication Society
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    • v.20 no.2
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    • pp.153-160
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    • 2002
  • Two different commercial brand X-ray films are used for examining possible differences caused by different target distances when the patients are examined with highenergy X-rays. 6MV- and 15MV X-rays are tested at four different target distances. The films on which the radiation amounts are gradually increased using H$_2$O phantoms are developed by an automatic developing machine to be analysed in the image densities. Characteristic curves have similar shapes for different conditions but for the 130cm target distance. ${\gamma}$ values and average image densities per the illuminated radiation are used to analyse the differences.

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Efficient rate control algorithm for video near-lossless compression (비디오 준무손실 압축을 위한 효율적인 레이트 컨트롤 알고리즘)

  • Joh, Beom Seok;Kim, Young Ro
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.6 no.2
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    • pp.11-17
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    • 2010
  • In this paper, we propose efficient rate control algorithm for video near-lossless compression. The proposed method adjusts pixel error range using amounts of previous encoded bits and target bits at a slice encoding interval. Thus, encoded bits by the proposed method are transmitted well through limited bandwidth without overflow. Also, target bits and encoded bits can be controlled according to transmission policy. Experimental results show that our proposed method not only almost fits compression ratio, but also has better image quality.