Equity of Bikeway Distribution in Minneapolis, Minnesota

2017 ◽  
Vol 2605 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Jueyu Wang ◽  
Greg Lindsey
Keyword(s):  
Nonprofit Organizations ◽  
Vertical Equity ◽  
Total Employment ◽  
Lorenz Curves ◽  
Gini Coefficients ◽  
Street Networks ◽  
Two Measures ◽  
Flexible Measure

Governments and nonprofit organizations are investing in the bicycling infrastructure. However, the benefits of the bicycling infrastructure have not always been distributed equally among neighborhoods, and the equity of the distribution has been a major concern. This study used two measures, the Gini coefficient and the loss of accessibility to jobs via bikeways, to assess both the horizontal and the vertical equity of the bicycling infrastructure's distribution in Minneapolis, Minnesota. Gini coefficients, calculated from Lorenz curves, provide a single flexible measure that allows comparisons within and between groups. Determination of accessibility to jobs via lower-stress bikeway and street networks allows the levels of connectivity via bikeways to be compared for different groups. Minneapolis is making substantial investments in the bicycling infrastructure and was used as a case study because data with which to assess changes in equity over time are available. With use of the block group as the unit of analysis, systemwide analyses of the distribution of bikeways relative to the locations of the population and total employment revealed increases in equity from 2010 to 2014. Comparison of Gini coefficients for all bicycling facilities among different subpopulations demonstrated horizontal inequities within each subgroup as well as indicators of vertical equity for various disadvantaged subgroups. The Gini coefficients revealed inequities in the distribution of urban trails for disadvantaged subpopulations. With the use of 3-mi network buffers, a bikeway penalty, calculated as the loss of job accessibility resulting from the choice to rely on a bikeway rather than on street networks, demonstrated a vertical equity for disadvantaged subgroups. These measures can be used to inform planning for and investments in bicycling facilities and to assess and compare the bicycling infrastructures of cities.

scholarly journals Measuring the Social Returns of Nonprofits and Social Enterprises: The Promise and Perils of the SROI

2014 ◽  
Vol 5 (2) ◽  
pp. 367-393 ◽  
Author(s):  
Kate Cooney ◽  
Kristen Lynch-Cerullo
Keyword(s):  
Nonprofit Organizations ◽  
Workforce Development ◽  
Social Enterprises ◽  
Development Programs ◽  
Performance Metric ◽  
Decision Points ◽  
The Social ◽  
Social Value Creation

AbstractSocial Return on Investment (SROI) metrics are a new tool available to nonprofit and social enterprise organizations to demonstrate the effectiveness and efficiency of their programs. After a short overview of three dominant methods for calculating the SROI, a case examining the implementation of an SROI study at a nationally recognized Boston-based nonprofit operating workforce development programs is presented to illuminate the methodological dilemmas across the arc of an SROI study. The case analysis centers on four key decision points in the implementation of the SROI study: identification of stakeholders, development of a method for estimating social value creation, determination of the time horizons, and selection of the discount rates. Next, to highlight the challenges in making comparisons across organizations, the second source of data is presented—a set of Yale SOM MBA student assignments conducting an SROI on a written case study found in the literature on workforce development. The student project results showcase how even when conducting SROI assessments on the same focal organization, the SROI calculation can vary widely depending on the outcome of the four decision points delineated above. The paper consequently offers two levels of analysis. First, it provides a detailed methodological overview of the reigning approaches to conducting an SROI. Second, it provides an assessment of the challenges to using SROI as a performance metric at this stage of the field’s development. Implications for use of the SROI are discussed from both the perspective of funders and the perspective of nonprofit organizations.

A novel method for the determination of linting propensity of paper

TAPPI Journal ◽  
2012 ◽  
Vol 11 (10) ◽  
pp. 9-17
Author(s):  
ALESSANDRA GERLI ◽  
LEENDERT C. EIGENBROOD
Keyword(s):  
Ash Content ◽  
The Novel ◽  
Offset Printing ◽  
Excellent Correlation ◽  
End Conditions ◽  
Bottom Side ◽  
Novel Method ◽  
Total Fraction

A novel method was developed for the determination of linting propensity of paper based on printing with an IGT printability tester and image analysis of the printed strips. On average, the total fraction of the surface removed as lint during printing is 0.01%-0.1%. This value is lower than those reported in most laboratory printing tests, and more representative of commercial offset printing applications. Newsprint paper produced on a roll/blade former machine was evaluated for linting propensity using the novel method and also printed on a commercial coldset offset press. Laboratory and commercial printing results matched well, showing that linting was higher for the bottom side of paper than for the top side, and that linting could be reduced on both sides by application of a dry-strength additive. In a second case study, varying wet-end conditions were used on a hybrid former machine to produce four paper reels, with the goal of matching the low linting propensity of the paper produced on a machine with gap former configuration. We found that the retention program, by improving fiber fines retention, substantially reduced the linting propensity of the paper produced on the hybrid former machine. The papers were also printed on a commercial coldset offset press. An excellent correlation was found between the total lint area removed from the bottom side of the paper samples during laboratory printing and lint collected on halftone areas of the first upper printing unit after 45000 copies. Finally, the method was applied to determine the linting propensity of highly filled supercalendered paper produced on a hybrid former machine. In this case, the linting propensity of the bottom side of paper correlated with its ash content.

Evaluation of Socio-Economic Conditions of Coldwater Fish Farmers: A Case Study of Sikkim

2020 ◽  
pp. 62-71
Keyword(s):  
Income Inequality ◽  
Economic Status ◽  
Good Condition ◽  
Total Sample ◽  
Living Conditions ◽  
Economic Conditions ◽  
Gini Coefficients ◽  
Socio Economic Status ◽  
The People

ABSTRACT The study analyses the socio-economic status, degree of income inequality and perceived socio-economic conditions of the fish farmers of the four districts of Sikkim. A total sample size of 200 fish farmers was selected from the four districts depending upon the presence of the number of farmers in each district. Purposive random sampling method was used and the results were analysed from descriptive statistics such as frequency count and percentages. The degree of income inequality was analysed through Gini coefficients. The factors that determined the perceived socio-economic living conditions were analysed with a logistic regression model. The socio-economic status of the people was found to be in good condition and there were not many variations among the fish farmers of different districts. Most of the respondents had pucca houses with the combination of firewood and LPG as a source of cooking fuel and also had access to basic amenities like electricity, drinking water and sanitation facilities in the households. The study also found that income inequality was not so severe amongst the fish farmers of the three districts except for the East district which had the strongest income inequality. The per capita income, housing condition and ratio of above primary education to total members had a significant impact on the perceived living conditions of the fish farmers. Keywords

The Calculation of Turbulent Diffusion Coefficients in Aquatic Ecosystems

2019 ◽  
Vol 70 (11) ◽  
pp. 3903-3907
Author(s):  
Galina Marusic ◽  
Valeriu Panaitescu
Keyword(s):  
Transport Equation ◽  
Turbulent Diffusion ◽  
Diffusion Coefficients ◽  
Aquatic Ecosystems ◽  
Specific Area ◽  
Left Bank ◽  
The Right ◽  
Prut River

The paper deals with the issues related to the pollution of aquatic ecosystems. The influence of turbulence on the transport and dispersion of pollutants in the mentioned systems, as well as the calculation of the turbulent diffusion coefficients are studied. A case study on the determination of turbulent diffusion coefficients for some sectors of the Prut River is presented. A new method is proposed for the determination of the turbulent diffusion coefficients in the pollutant transport equation for specific sectors of a river, according to the associated number of P�clet, calculated for each specific area: the left bank, the right bank and the middle of the river.

scholarly journals Investigations on historical monuments’ deterioration through chemical and isotopic analyses: an Italian case study

2021 ◽  
Author(s):  
Maria Ricciardi ◽  
Concetta Pironti ◽  
Oriana Motta ◽  
Rosa Fiorillo ◽  
Federica Camin ◽  
...  
Keyword(s):  
Potassium Nitrate ◽  
Sewage Water ◽  
X Ray Diffraction ◽  
Italian Case ◽  
Historical Monuments ◽  
Isotopic Analyses ◽  
Historic Centre ◽  
The Church

AbstractIn this paper, we analysed the efflorescences present in the frescos of a monumental complex named S. Pietro a Corte situated in the historic centre of Salerno (Campania, Italy). The groundwater of the historic centre is fed by two important streams (the Rafastia and the Fusandola) that can be the sources of water penetration. The aims of this work are to (i) identify the stream that reaches the ancient frigidarium of S. Pietro a Corte and (ii) characterize the efflorescences on damaged frescos in terms of chemical nature and sources. In order to accomplish the first aim, the water of the Rafastia river (7 samples) and the water of the Fusandola river (7 samples) were analysed and compared with the water of a well of the Church (7 samples). The ionic chromatography measurements on the water samples allowed us to identify the Rafastia as the river that feeds the ancient frigidarium of S. Pietro a Corte. To investigate the nature and the origin of the efflorescences (our second aim), anionic chromatography analyses, X-ray diffraction measurements, and the isotopic determination of nitrogen were performed on the efflorescences (9 samples) and the salts recovered from the well (6 samples). Results of these analyses show that efflorescences are mainly made of potassium nitrate with a δ15N value of + 9.3 ± 0.2‰. Consequently, a plausible explanation for their formation could be the permeation of sewage water on the walls of the monumental complex.

scholarly journals Influence of Tourism Seasonality and Financial Ratios on Hotels’ Exit Risk

2021 ◽  
pp. 109634802110160
Author(s):  
Dengjun Zhang ◽  
Jinghua Xie
Keyword(s):  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Hotel Industry ◽  
Financial Ratios ◽  
Market Segment ◽  
Tourism Demand ◽  
Hazards Model ◽  
Two Measures ◽  
The Impact

Tourism seasonality negatively affects hotels’ operational and financial performance and then survival probabilities. Several studies have evaluated the impact of tourism seasonality on hotels’ exit risk. However, the empirical findings are ambiguous, probably due to the overall seasonality and different measures used in these studies. Against this background, this study explores the impact of tourism seasonality on hotel firms’ exit risk, using a proportional hazards model. We controlled for financial ratios, the main factors influencing the exit risk, and used two measures of tourism seasonality by market segment, namely, leisure, business, and conference tourism. The case study is the Norwegian hotel industry. The empirical results suggest that the different seasonal patterns of tourism demand in the market segments mitigate the impact of the overall seasonality on hotels’ exit risk, and that seasonality measures of various tourism segments affect the exit risk in different ways.

Chemical sensing failed by aggregation-caused quenching? A case study enables liquid/solid two-phase determination of N2H4

2021 ◽  
Vol 415 ◽  
pp. 128975
Author(s):  
Xiangqian Li ◽  
Mengqing Li ◽  
Yuze Chen ◽  
Gongxi Qiao ◽  
Qian Liu ◽  
...  
Keyword(s):  
Chemical Sensing ◽  
Phase Determination ◽  
Two Phase

The impact of acid hydrolysis conditions on carbohydrate determination in lignocellulosic materials: a case study with Eucalyptus globulus bark

Holzforschung ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ricardo Jorge Oliveira ◽  
Bruna Santos ◽  
Maria J. Mota ◽  
Susana R. Pereira ◽  
Pedro C. Branco ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Eucalyptus Globulus ◽  
Industrial Processes ◽  
Lignocellulosic Materials ◽  
Optimal Conditions ◽  
Hydrolysis Conditions ◽  
The Impact ◽  
Eucalyptus Bark

Abstract Lignocellulosic biomass represents a suitable feedstock for production of biofuels and bioproducts. Its chemical composition depends on many aspects (e.g. plant source, pre-processing) and it has impact on productivity of industrial bioprocesses. Numerous methodologies can be applied for biomass characterisation, with acid hydrolysis being a particularly relevant step. This study intended to assess the most suitable procedures for acid hydrolysis, taking Eucalyptus globulus bark as a case study. For that purpose, variation of temperature (90–120 °C) was evaluated over time (0–5 h), through monosaccharides and oligosaccharides contents and degradation. For glucose, the optimal conditions were 100 °C for 2.5 h, reaching a content of 48.6 wt.%. For xylose, the highest content (15.2 wt.%) was achieved at 90 °C for 2 h, or 120 °C for 0.5 h. Maximum concentrations of mannose and galactose (1.0 and 1.7 wt.%, respectively) were achieved at 90 and 100 °C (2–3.5 h) or at 120 °C (0.5–1 h). These results revealed that different hydrolysis conditions should be applied for different sugars. Using this approach, total sugar quantification in eucalyptus bark was increased by 4.3%, which would represent a 5% increase in the ethanol volume produced, considering a hypothetical bioethanol production yield. This reflects the importance of feedstock characterization on determination of economic viability of industrial processes.

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