What Do Quarterly Workforce Dynamics Tell Us About Wal-Mart? Evidence from New Stores in Pennsylvania

In this paper I seek to better inform debate regarding Wal-Mart’s local impact on wages, and employment dynamics by combining data on Wal-Mart stores with the recently release Quarterly Workforce Indicators provided by the US Census. Use a panel of Pennsylvania counties, who saw entrance of a Wal-Mart in 2002, I find a new store has no effect on existing employee wages in the retail sector. However, new retail sector hires experience a roughly $0.50 an hour increase in total compensation in the quarter Wal-Mart enters. The entrance of a Wal- Mart draws employees from existing businesses, reducing job creation while increasing net job flows. Wal-Mart also has a longer term effect on net employment of a little more than 50 jobs in a total year. This employment finding is quite similar to findings in Hicks and Wilburn [2001] and Basker [2005]. Perhaps most importantly, Wal-Mart entrance is associated with a dramatic decline in retail sector job turnovers (over 40 percent). This result challenges much of the received wisdom of Wal-Mart’s role in the retail sector. The policy implications of these findings echo those of Ken Stone, who cautions against activist policy in support, or against Wal-Mart at the local level. Disclosure: The author of this study owns no stock in Wal-Mart or any related firm (other than that held by the mutual fund companies Vanguard and TIAA-CREF). I have performed no paid consulting services from any retail firm, its developers, local governments or related entities since 2002 (though I continue to field frequent questions on my earlier research). I have received no honoraria related to Wal-Mart research (other than travel costs paid by the Federal Reserve Bank of Richmond in 2001). In short, except for roughly$1,500 purchases of diapers annual since 1999 I have no financial relationship with Wal-Mart or any affiliate that I am aware of.Wal-Mart, Pennsylvania, Quarterly Workforce Indicators

The Impact of Wal-Mart on Local Fiscal Health: Evidence from a Panel of Ohio Counties

This research analyzes selected fiscal impacts of Wal-Mart in Ohio from 1985 through 2003. Using a panel of counties, and accounting for spatial autocorrelation in an instrumental variable model I estimate impact of Wal-Mart and Super-Centers on selected revenues and transfer payments. On revenues I find that the presence of a Wal-Mart increases local commercial property tax assessments, resulting in collection increases of between $350,000 to roughly$1.3 million. Wal-Mart also is associated with higher levels of local labor force participation. On expenditures I also find that the presence of a Wal-Mart dramatically increases the per capita EITC claims in a county (between 18 and 43 percent), while the dollar value of these claims experiences mixed impacts between Wal-Mart and a Supercenter. Similarly, the impact of Wal-Mart on Foodstamps expenditures is mixed, but small in any case. There are no in-county impacts of Wal-Mart on expenditures on Temporary Assistance to Needy Families and its predecessor Aid to Families with Dependent Children. However, Medicaid expenditures experience growth which may amount to roughly 16 additional cases per county attributable to a single Wal- Mart. The per worker costs of Medicaid estimated in this study is consistent with reported levels in a number of states, and study estimates by Dube and Jacobs [2004], Carlson [2005] and Hicks [2005a]. The magnitude and statistical certainty of these findings, accompanied by a review of previous research suggests that local fiscal intervention, either through incentives or the much touted “Wal-Mart Tax” is unwarranted.

Does Wal-Mart Cause an Increase in Anti-Poverty Program Expenditures?

As the largest private sector employer in the United States, Wal-Mart experiences considerable scrutiny over its influence on a number of regional fiscal and economic issues. These include its impact on the local retail market structure, land use patterns, local fiscal conditions and general business practices. Criticism of Wal-Mart’s business practices include, but are not limited to its anti-unionization efforts, sale of imported goods, wage and compensation structure and the use of Federal and state anti-poverty transfers by its employees. In this paper I evaluate the concerns regarding the role of Wal-Mart in changing expenditures on Federal and state anti-poverty transfers in the United States. Using a panel of the conterminous 48 states, correcting for time and spatial autocorrelation and local government mix and policy changes, I find the number of Wal-Marts, and their employment share in the retail sector have no impact on Foodstamps expenditures. Expenditures on AFDC/TANF are unaffected by Wal-Mart in the test using the number of stores to represent Wal-Mart’s presence. In the retail employment share, the impact is negative, with a 1 percent increase in Wal-Mart’s share reduced AFDC/TANF expenditures by 3.3 percent. I find that Wal-Mart does increase Medicaid expenditures by roughly $898 per worker, which is consistent with other studies of the Medicaid costs per low wage worker across the United States.

Transportation and infrastructure, retail clustering, and local public finance: evidence from Wal-Mart's expansion

Transportation ; Retail trade ; Finance, Public

The Locational Impact of Wal-Mart Entrance: A Panel Study of the Retail Trade Sector in West Virginia

This paper examines the retail trade sector in 14 West Virginia counties from 1989 through 1996. A series of random effects models are tested on these panel data to measure the effect of the entrance of Wal- Mart stores in the county and in adjacent counties, and business cycle effects. This paper differs from earlier research in that it controls for endogeneity in the entrance decision of Wal-Mart in faster growing counties. This research finds a dramatic net increase in employment and wages in the Retail Trade sector (SIC 52) and a mild increase in the number of firms. The study finds a per capita wage increase in this industry, which is surprising but small. The paper concludes with further research recommendations.

Explaining the Allocation of Bilateral and Multilateral Environmental Aid to Developing Countries

In this paper we examine how international development assistance for environmental purposes is allocated to developing countries. In particular, we investigate whether there are patterned differences between environmental aid for international public goods projects versus environmental projects having more localized impacts. We empirically investigate these questions using project project level development assistance data.International Development,

Consumption of submerged aquatic macrophytes by rudd (scardinius erythrophthalmus L.) in New Zealand

In experiments in New Zealand, rudd (Scardinius erythrophthalmus L.) of 108–277mm fork length (FL) ate a wide range of native and introduced submerged aquatic macrophytes in captivity and in the field. Rudd consumed the native charophytes Chara globularis Thuill., Chara fibrosa Ag. ex Bruz., and Nitella spp., the native macrophytes Potamogeton ochreatus Raoul. and Myriophyllum propinquum A. Cunn., and the introduced macrophytes Elodea canadensis Michx., Egeria densa Planch., Lagarosiphon major L., and Ceratophyllum demersum L. Rudd consistently consumed the Nitella spp. and Potamogeton ochreatus before Ceratophyllum demersum. From the results of experiments in tanks and in the field, we found the order of highest to lowest palatability was: Nitella spp. > Potamogeton ochreatus > Elodea canadensis> Chara globularis = Chara fibrosa> Egeria densa = Lagarosiphon major > Myriophyllum propinquum > Ceratophyllum demersum. The order of consumption was subject to some variation with season, especially for Egeria densa, Lagarosiphon major, and Myriophyllum propinquum. Rudd consumed up to 20% of their body weight per day of Egeria densa in spring, and 22% of their body weight per day of Nitella spp. in summer. Consumption rates were considerably lower in winter than in summer. The results of our field trial suggested that the order of consumption also applies in the field and that rudd are having a profound impact on vulnerable native aquatic plant communities in New Zealand. Nitella spp. and Potamogeton ochreatus are likely to be selectively eaten, and herbivory by rudd might prevent the re-establishment of these species in restoration efforts

Use of high-intensity data to define large river management units: A case study on the lower Waikato River, New Zealand

The importance of environmental heterogeneity in lotic ecosystems is well recognised in river management, and continues to underpin studies of hierarchical patch dynamics, geomorphology and landscape ecology. We evaluated how physical characteristics and water chemistry measurements at high spatiotemporal resolution define channel units of potential ecological importance along 134 km of the lower Waikato River in North Island, New Zealand. We used multivariate hierarchical clustering to classify river reaches in an a priori unstructured manner based on (i) high-frequency, along-river water quality measurements collected in four seasons and (ii) river channel morphology data resolved from aerial photos for 1-km long reaches. Patterns of channel character were shaped by the depth and lateral complexity of constituent river reaches, while water quality patterns were represented by differences in clarity, chlorophyll fluorescence and specific conductance driven by tributary inflows in the mid-section of the river and tidal cycles in the lower section. Management units defined by physical characteristics or water quality did not necessarily align with boundaries typically reflecting clinal processes (e.g. tidal influence) or geomorphic, network or anthropogenic discontinuities. The results highlight the dynamic spatial and temporal properties of large rivers and the need to define clear objectives when deriving spatial units for management and research. Given that actions and targets for physical channel and water quality management may differ, the spatial extent identified for each of these does not necessarily need to directly coincide, although both should be considered in decision making and experimental design

White fat, factitious hyperglycemia, and the role of FDG PET to enhance understanding of adipocyte metabolism

The development of a hybrid PET/CT led to the recognition of the enhanced glycolysis in brown fat. We report a previously unrecognized mechanism for altered fluorodeoxyglucose (FDG) biodistribution with diffuse white adipose tissue uptake. This occurred during a restaging scan for cervical cancer following administration of insulin in the setting of measured hyperglycemia. The patient's blood sugar normalized, but she experienced symptoms and signs of hypoglycemia. A subsequent history indicated that the patient received intravenous high-dose vitamin C just prior to arrival. Ascorbic acid is a strong reducing agent and can cause erroneous false positive portable glucometer readings. Accordingly, it is likely the patient was euglycemic on arrival and was administered FDG during a period of insulin-induced hypoglycemia. Prominent diffuse white adipose tissue, gastric mucosal, myocardial, and very low hepatic and muscle activity were observed. The case provides insight into the metabolic changes that occur during hypoglycemia and the potential danger of relying on portable glucometer readings. We discuss the potential biological basis of this finding and provide recommendations on the avoidance of this complication

label-based security enforcement for web applications

This paper presents SELinks, a programming language focused on building secure multi-tier web applications. SE-Links provides a uniform programming model, in the style of LINQ and Ruby on Rails, with language syntax for accessing objects residing either in the database or at the server. Object-level security policies are expressed as fullycustomizable, first-class labels which may themselves be subject to security policies. Access to labeled data is mediated via trusted, user-provided policy enforcement functions. SELinks has two novel features that ensure security policies are enforced correctly and efficiently. First, SELinks implements a type system called Fable that allows a protected object’s type to refer to its protecting label. The type system can check that labeled data is never accessed directly by the program without first consulting the appropriate policy enforcement function. Second, SELinks compiles policy enforcement code to database-resident user-defined functions that can be called directly during query processing. Database-side checking avoids transferring data to the server needlessly, while still allowing policies to be expressed in a customizable and portable manner. Our experience with two sizable web applications, a model health-care database and a secure wiki with fine-grained security policies, indicates that cross-tier policy enforcement in SELinks is flexible, relatively easy to use, and, when compared to a single-tier approach, improves throughput by nearly an order of magnitude. SELinks is freely available