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1.
Ecology of urban lawns under three common management programs   总被引:2,自引:1,他引:1  
Turfgrass lawns are a central part of urban and suburban landscapes throughout North America and are often managed using repeated applications of chemical fertilizers and pesticides. These inputs are expensive and may negatively affect ecological processes in lawns. Therefore, we evaluated the influence of three most common lawn care programs on ecological characteristics of turfgrass lawns. Twenty-eight home lawns, separated into 3 groups based on the lawn care program (professional, do-it-yourself [DIY], and no-input), were studied. Data on lawn quality, weed and insect infestation, disease incidence, soil nematode community, soil nitrogen pools, microbial biomass (MBN), and soil organic matter (SOM) were collected. Results indicated that professional lawn care resulted in the highest aesthetic lawn quality mainly due to better weed control, compared to DIY and no-input programs. However, professional and DIY programs negatively affected MBN and SOM pools and enhanced disease (rust) severity. No significant differences in soil nematode population and nematode community indices across the three programs were found, indicating no differences in net ecosystem productivity among the three programs. Overall, soil nematode food web in turfgrass lawns represented a disturbed food web compared to natural grasslands and forest ecosystems, irrespective of the lawn care program used.  相似文献   

2.
Human choices regarding land cover management practices may influence ecosystem services provided by urban green spaces. We conducted a 2-year study to compare biological (weed, insect, and disease), aesthetic (lawn quality), and economic (lawn care program cost) attributes of an integrated pest management (IPM) program, in which pesticides are applied on the basis of treatment thresholds, with a standard program, in which pesticides are applied on a calendar basis without pest monitoring. Both programs were managed by a professional lawn care operator. Although weed incidence was low, the IPM program had significantly more lawns with weed presence than the standard program during 2005 and 2006. However, only 21% of the IPM lawns required herbicide applications in 2005, and none exceeded the treatment threshold (5% weed cover) in 2006 as compared to 100% of the standard program lawns being treated for weeds in both years. The IPM program also had significantly more lawns with insect damage than the standard program during June 2005 and August 2005, but not September 2005 and throughout 2006. Only 28% of the IPM lawns required insecticide applications in 2005 and none exceeded the threshold (5% insect damage) in 2006 whereas all of the lawns in the standard program received insecticide treatments in both years. Rhizoctonia blight was present on some of the lawns, but was not a common problem. Although lawn quality was high for both programs (>8, on a scale of 1–9), it was significantly higher for standard than for IPM program lawns during 2005, and June 2006 and September 2006, but not August 2006. The annual lawn management costs were lower for the IPM (281.50) than the standard program (281.50) than the standard program (458.06). Thirty one percent of the IPM program customers who continued with the study in 2006 did so because they were satisfied with the IPM program. Among those who did not continue with the program, 33% cited weed or insect problems, while 33% expected better results. The implications of these findings for implementation of IPM in professional lawn care are further discussed.  相似文献   

3.
The 2009 American Cash for Clunkers program, which subsidized consumers who scrapped old vehicles and purchased new vehicles, was promoted by appealing to multiple constituencies. We evaluate the policy and alternatives according to its stated goals: emissions reductions, economic stimulus, and reducing inequality. We calibrate a dynamic partial equilibrium portfolio model to match consumer expenditure data from 1998 to 2011 focusing on heterogeneity across cars and trucks. We find the program generated $0.17 in environmental benefits, $0.28 in consumer surplus, and $0.31 in net discounted additional spending per subsidy dollar. Since subsidies largely went to middle-income infra-marginal consumers, the program exacerbated consumption inequality. We evaluate alternative policy designs and find no policy which simultaneously improves all outcomes. (JEL H23, L52, L92, D63)  相似文献   

4.
Abstract

Objective: To evaluate U.S. obstetrics-gynecology (OB-Gyn) program Director appraisal of resident physician female sexual health training. Methods: An OB-Gyn resident sexual health curriculum survey was developed and sent to 237?U.S. OB-Gyn program directors. University/military programs were compared to community-based programs. Results: 115 OB-Gyn residency program directors responded (48.5% participation); 37.9% university/military and 43.2% community OB-Gyn Program Directors appraise the resident curriculum as “not well” preparing residents to manage sexual health therapies upon graduation. Topics not sufficiently covered include human sex trafficking, sexual health for women with disabilities, and cultural competency. Conclusions: This study identifies opportunities in OB-Gyn residency female sexual health education.  相似文献   

5.
IntroductionThe Singapore Physical Activity and Nutrition Study (SPANS) aimed to improve the physical activity (PA) and nutrition behaviours of Singaporean women aged 50 years and over. The SPANS program consisted of PA classes, nutrition workshops, telephone dietary counselling, health booklets, a health calendar and program ambassadors. This study aimed to assess and understand the implementation of the program strategies and gain insight into process evaluation components to inform future programs.MethodsThe evaluation was guided by a process evaluation framework and collected data via questionnaires (n = 209), program ambassador documentation and exit interviews with program completers (n = 13) and non-completers (n = 12).ResultsIn total, 295 participants completed the program (response rate = 84 %). Participants reported high levels of satisfaction with the overall program (99.5 %) and program activities (96.7 %), and also rated program ambassadors highly. Participation rates were highest for telephone dietary counselling sessions. The main reason for not attending program activities was having a ‘busy schedule’ (n = 158). Participants cited a need for improved recreational centre facilities and increased flexibility around program delivery.ConclusionsThe process evaluation showed that the program strategies were implemented as planned and were deemed suitable for supporting behaviour change among Singaporean women aged 50 years and over. The program reached and involved the majority of participants throughout the six months. The combination of practical educational resources and supportive program ambassadors were key strategies that facilitated positive PA and dietary behaviours. However, there needs to be some flexibility in the delivery of programs. The findings of this research may inform other programs in the region.  相似文献   

6.
7.
Internationally, efficacy studies of school-based child sexual abuse prevention programs display a series of methodological shortcomings. Few studies include adolescent participants, recording of disclosures has been inconsistent, and no studies to date have assessed presenter adherence to program protocols or summated the costs of program implementation. A pretest–posttest waitlist control design was used to evaluate the Tweenees program delivered to grade 6 (n?=?88) and grade 7/8 students (n?=?117) compared to a control (n?=?185). Outcome measures included a knowledge/skills questionnaire, systematic coding of disclosures, and video interaction analysis of lessons. Costs were calculated per student, class, and school. Adolescents made small knowledge and skills gains indicating a program ceiling effect. Implementation analysis suggests low levels of adult control facilitated disclosures. Program costs were relatively inexpensive. Recommendations are made for future research.  相似文献   

8.
Through creating shared value (CSV) initiatives, companies have attempted to contribute to solving social problems that the public sector cannot address alone, such as migration, health, climate change, and job losses due to automation. Companies are also using CSV as business opportunities to develop their competitiveness. Only a few studies, however, have examined how organizations can develop and implement CSV programs, and the outcomes of those programs. We conducted a case study on how a multinational company, Yuhan-Kimberly, a joint venture of Kimberly-Clark and Yuhan, developed and implemented its CSV program, and created win-win, mutually beneficial impacts, in response to an increasingly aging society in Korea. South Korea is the world’s most rapidly aging society with the highest poverty and suicide rates among older adults. Yuhan-Kimberly’s CSV initiative includes fostering small-sized senior care businesses, creating jobs for older adults, changing the negative perception of older adults, and ultimately creating a market ecosystem for the older adult care industry. We used triangulation through company documents, including annual sustainability reports (N = 10), news reports (N = 623), company-conducted survey results (N = 80), and in-depth interviews (N = 14) with employees and members of other organizations and publics. The results reveal how the company developed and implemented a CSV program to cultivate mutually beneficial relationships and shared value for the company, older adults, other organizations, and society. The results indicate that CSV programs can be powerful relationship cultivation strategies to create mutual benefits both for society, by providing sustainable and feasible solutions, and for organizations, by enhancing their competitive advantages.  相似文献   

9.

An analysis of the birds in Bangkok’s urban parks and landscapes provided guidance in designing healthy urban ecosystems. This research studied the relationships between bird diversity, park size, distance to the nearest main park, and habitat compositions in 10 urban parks in the Bangkok metropolitan area between January and August in 2013. Thirty sampling points per park were used to observe the number and species of birds in each urban park. A total of 50 bird species were found. Phutthamonthon, the largest urban park (400 ha), contained the greatest number of species (39 species), followed by Suan Luang Rama IX (80 ha and 34 species) and Wachirabenchatat (60 ha and 29 species). Moreover, the diversity index (H′) was highest in Phuttamonthon (1.17), followed by Thawiwanarom (1.08), and Wachirabenchatat (1.04). Larger urban parks and parks closer to the largest urban park had higher species richness than smaller parks and parks further from the largest urban park. The large parks contain higher habitat compositions than small parks. These findings can be applied to future urban ecosystem planning to combine the importance of park size (island size, and its proximity to a large park) and its arrangement, including features such as wetland, forest, buildings and grassland; and provide basic advice for future urban park design, as well as re-design of current urban parks.

  相似文献   

10.
This study used simulations to examine the effect of prize structure on the outcome volatility and the number of winners of various game configurations. The two most common prize structures found in gambling games are even money payoff games (bet 1; win1; win 2) found on most table games and multilevel prizes structures found in gambling machine games. Simulations were set up to examine the effect of prize structure on the long-term outcomes of these games. Eight different prize structures were compared in terms of the number of winners and volatility. It was found that the standard table game and commercial gambling machines produced fairly high numbers of short term winners (1 h), but few long term winners (50 h). It was found that the typical even money game set up produced the lowest level of volatility. Of the multilevel prize structures examined, the three simulations based on commercial gambling machines were the least volatile. The results are examined in terms of the pragmatics of game design.  相似文献   

11.
Urban green spaces provide important ecosystem services, such as amenity, biodiversity, productivity, climate amelioration, hydrological and biogeochemical cycling. Intensively managed urban gardens can sequester carbon through vegetation growth and soil C increase, but may experience nitrous oxide (N2O) emissions and reduced soil methane (CH4) uptake from irrigation and fertiliser use. Soil atmosphere exchange of N2O, CH4 and carbon dioxide (CO2) was measured in lawn and wood chip mulched garden areas in Melbourne, Australia in winter, spring and summer under various water and fertiliser regimes. Gas exchange before and after lawn fertiliser application was measured continuously for three weeks using an automated chamber system. Applying fertiliser led to a peak N2O emission of >60 μg N m−2 h−1, but overall only weekly irrigation (10 mm) significantly increased mean soil N2O emissions above that in other treatments. Under mulch, mean soil N2O emissions (14.0 μg N m−2 h−1) were significantly smaller than from irrigated lawn (27.9 μg N m−2 h−1), whereas mean soil CH4 uptake under mulch (−30.7 μg C m−2 h−1) was significantly greater (p < 0.01) than in any lawn treatment. Lawns were either a weak CH4 sink or source. Soil C density (0–25 cm) under mulch (12.5 kg C m−2) was greater that under lawn (8.0 kg C m−2). On a carbon dioxide equivalent (CO2-e) basis, soil N2O emissions offset the benefits of soil CH4 uptake. Mulched garden areas provide greatest C sequestration potential in soil and vegetation and the smallest non-CO2 emissions, as soil CH4 uptake offsets a large fraction of soil N2O emissions. Results of this study suggest that reducing the irrigation and fertiliser application to lawns can help mitigate GHG emissions from urban garden systems, and increasing the area of mulched perennial garden beds can also provide net GHG benefits; however, this needs to be tested in other garden systems with different soil types and environmental conditions.  相似文献   

12.
Abstract

Objective: The purpose of this one-year pilot study was to obtain preliminary information on the effects of an outdoor activity program, in comparison to an indoor activity program, on sleep and behavior in nursing home residents with dementia. Structured activity programs have been shown to improve dementia-related behavior problems, and there are some indications that improved behavior is associated with improved sleep. Previous research has shown that sleep disturbance is common in nursing home residents, and that limited exposure to light bright enough to entrain circadian rhythms contributes to their sleep problems. Thus, we expected to see improvements in behavior in both the outdoor and indoor activity groups, but improvements in sleep in the outdoor activity group only.

Methodology: A two-group (outdoor program, indoor program) two phase (baseline, intervention) design was used. Subjects were randomized to the outdoor or indoor program groups. Sleep and behavior disturbance were assessed over a 10-day period at baseline (usual activity conditions, which were expected to include little or no time spent outdoors) and at intervention (daily structured activity program offered outdoors or indoors). Sleep was assessed with wrist actigraphs with photocells, which also allowed for monitoring of light exposure. Behavior disturbance was assessed with the Cohen-Mansfield Agitation Inventory. Both activity programs were offered Monday-Friday over a 2 week period, included similar content and were offered by research project staff. The analytical approach emphasized primary changes between baseline and intervention measures of sleep and behavioral symptoms in the two activity groups. Because this was a pilot study, the significance level was set a priori at p< 0.10.

Findings: The outdoor activity group experienced significant improvements in maximum sleep duration. Both groups showed significant improvements in total sleep minutes. There also was a significant improvement in verbal agitation in the outdoor activity group.  相似文献   

13.
This paper examines the demand for hockey game trips among metropolitan and nonmetropolitan residents of Alberta, Canada. Using data on both revealed and stated preference game‐trip behavior from a telephone survey conducted throughout Alberta, we estimate the effect of ticket prices, team quality, arena amenities, and capacity on the latent demand for National Hockey League hockey games. We find that lower ticket prices, higher team quality, and additional capacity encourage attendance. In the status quo scenario, consumer surplus per game is $50 for those who had attended hockey games and about 50% less for those who had not attended games. Exploiting the stated preference data, we develop a number of other consumer surplus estimates. We also include travel costs in the estimation of the demand function and estimate the full value of the game trip considering both ticket prices and travel costs. Sold‐out arenas in Calgary and Edmonton generate annual consumption benefits of $40 and $35 million when only ticket prices are used to calculate consumer surplus (i.e., excluding travel costs). Considering the full‐price consumer surplus for the Calgary Flames of $103 per game trip, the annual consumption benefits may be as high as $82 million. (JEL R22, L83, D61)  相似文献   

14.
Objective: The objective of this research was to examine and explain elements that enhanced or thwarted program growth of the United States Veterans Health Administration Medical Foster Home program. Methods: This qualitative study was conducted nationally through individual interviews over the phone and in-person (n = 22) with coordinators (n = 15 at slow-growth programs; n = 6 at fast-growth programs), program support assistants (PSAs) (n = 1 at slow-growth program), and home-based primary care team members (n = 3), as well as three in-person focus groups (n = 28 total participants) with home-based primary care team members. All participants (N = 53) were involved with programs in existence for at least two years. Results: Facilitators and barriers that enhanced or thwarted program growth emerged around four themes: A full-time coordinator; Unmitigated home-based primary care team engagement; Pursuit and receipt of appropriate referrals; and Match between caregiver, home, and Veteran. Conclusions: To facilitate program growth, program leaders should consider themes identified and how to foster situations and shape policies that put themes into practice.  相似文献   

15.
Abstract

Analyses of 94 Fund for the Improvement of Post-Secondary Education (FIPSE)-sponsored drug-prevention programs and their outcomes used the Core Survey to identify 34 institutions where college students' binge drinking increased (M = 5.44%) and 60 institutions where it decreased (M = -4.59%) during 2 years of program operation. The authors used an inductively derived taxonomy of prevention program elements, student variables, student substance use, use-related variables, and institutional variables to compare the 2 groups of institutions. Only prevention program elements discriminated between groups. Factor analysis of discriminating elements identified 8 prevention factors that improved base-rate prediction of institutional decrease in binge drinking by 28.1%. Factor synthesis yielded a 3-construct binge-drinking prevention model based on student participation and involvement strategies, educational and informational processes, and campus regulatory and physical change efforts. This model improved base-rate prediction of decreased binge drinking by 33.2%.  相似文献   

16.
Smart Steps: Embrace the Journey is a research‐based educational curriculum for stepfamily couples (“stepcouples”). The curriculum is designed to build couple strengths while addressing the unique challenges of repartnering with a child or children from a previous relationship. This study evaluated the effectiveness of this curriculum with 151 individuals in relationally less stable stepcouple relationships who either engaged in the Smart Steps curriculum (= 97) or were part of the comparison group (= 54). This study represents methodological and conceptual advances in the study of stepfamily programs with the use of a comparison group, a racially and economically diverse sample, and a relationally at‐risk population. Results indicated that those who participated in Smart Steps reported significant increases in individual empowerment, couple quality, family harmony, and parenting efficacy while these measures were unchanged for those who did not receive the program. Implications for future research and for practitioners are provided.  相似文献   

17.
Abstract

This article describes the successful integration between EAP and wellness programs at Fairview Health Services-a program called Fairview Alive.A brief history of integration between EAP and wellness at Fairview is provided including the shared mission these two programs serve at Fairview. Next, this article outlines the Population Health Model on which Fairview Alivewas built, and the specific programs and services provided under each segment of this model. This article then focuses on how Fairview addresses depressionone of their largest cost drivers-in a coordinated effort. Finally, preliminary outcomes from a comprehensive program evaluation, including the impact on medical costs, workers compensation costs and absenteeism costs, are discussed.  相似文献   

18.
Briefly Noted     
A project that began a year ago (see ADAW, Jan. 15, 2018), Shatterproof's rating system of addiction treatment programs took another step last month when the nonprofit announced it would start out with a pilot, now that it has $5 million. Saying the current addiction treatment system is broken, Shatterproof founder and CEO Gary Mendell said the project was made possible by funding from two foundations (the Laura and John Arnold Foundation and the Robert Wood Johnson Foundation) and a coalition of five insurance companies. “People who need help for addiction don't know what to look for or where to turn,” said Sam Arsenault, director of national treatment quality initiatives at Shatterproof, in the Dec. 18 announcement of the project. “We are taking rating system best practices from health care and other business sectors and applying them to addiction treatment. This will not only provide critical information to individuals looking for care but also drive a long overdue transformation of the addiction treatment industry.” The Shatterproof Rating System will utilize data from three sources: insurance claims, provider surveys and consumer experience, with collaboration from the National Quality Forum (NQF), a membership organization composed of payers. Initially, the program will begin with a pilot, with analysis done by RTI International. “Consumers can find information and accurate data on the quality of nursing homes, hospitals, physicians and most other types of providers,” said Tami Mark, director of behavioral health financing and quality measurement at RTI International. “It's time that patients have reliable information on addiction treatment.”  相似文献   

19.
ABSTRACT

This exploratory study examined MSW education’s organizational-level lesbian, gay, bisexual, and transgender (LGBT) competence. Data were gathered from a sample of MSW program directors, faculty members, and students (N=1385) from 34 MSW programs in the United States. Hierarchical linear modeling analyzed differences in perceptions of organizational LGBT competence between MSW programs and among participants in the same program. Results showed organizational LGBT competence varied significantly among MSW programs and indicated program directors, faculty members, and students had different perceptions of the competence of their shared program. Specifically, directors rated the LGBT competence of their program higher than faculty, and faculty rated their program higher than students did. Implications for research and suggestions for social work education are discussed.  相似文献   

20.
This study examined the impact of childhood activity limitations on family financial burden in the U.S. We used ten complete panels (1996–2006) of the Medical Expenditure Panel Survey (MEPS) to evaluate the burden of out-of-pocket healthcare expenditures for 17,857 families with children aged 0–17 years. Multivariate generalized linear models were used to examine the relationship between childhood activity limitation status and both absolute and relative financial burden. Families of children with limitations had higher absolute out-of-pocket healthcare expenditures than families of children without limitations ($594.36 higher; p < 0.05), and were 54% more likely to experience relative burden (p < 0.05). Substantial socioeconomic disparities in financial burden were observed. Policies are needed to enable these families to access appropriate and affordable healthcare services.  相似文献   

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