scholarly journals Fragility of a multilayer network of intranational supply chains

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Michael Gomez ◽  
Susana Garcia ◽  
Sarah Rajtmajer ◽  
Caitlin Grady ◽  
Alfonso Mejia
Keyword(s):  
United States ◽  
Supply Chains ◽  
Geographic Location ◽  
The United States ◽  
Pharmaceutical Products ◽  
Input Output ◽  
Economic Shocks ◽  
Multilayer Network ◽  
Avalanche Size ◽  
Goods And Services

Abstract Supply chains enable the flow of goods and services within economic systems. When mapped for the entire economy and geographic locations of a country, supply chains form a spatial web of interactions among suppliers and buyers. One way to characterize supply chains is through multiregional input-output linkages. Using a multiregional input-output dataset, we build the multilayer network of supply chains in the United States. Together with a network cascade model, the multilayer network is used to explore the propagation of economic shocks along intranational supply chains. We find that the effect of economic shocks, measured using the avalanche size or total number of collapsed nodes, varies widely depending on the geographic location and economic sector of origin of a shock. The response of the supply chains to shocks reveals a threshold-like behavior. Below a certain failure or fragility level, the avalanche size increases relatively quickly for any node in the network. Based on this result, we find that the most fragile regions tend to be located in the central United States, which are regions that tend to specialize in food production and manufacturing. The most fragile layers are chemical and pharmaceutical products, services and food-related products, which are all sectors that have been disrupted by the Coronavirus Disease 2019 (COVID-19) pandemic in the United States. The fragility risk, measured by the intersection of the fragility level of a node and its exposure to shocks, varies across regions and sectors. This suggests that interventions aiming to make the supply-chain network more robust to shocks are likely needed at multiple levels of network aggregation.

Fake Pharmaceuticals: How They and Relevant Legislation or Lack Thereof Contribute to Consistently High and Increasing Drug Prices

2003 ◽  
Vol 29 (4) ◽  
pp. 525-542
Author(s):  
Merri C. Moken
Keyword(s):  
United States ◽  
Prescription Drugs ◽  
The United States ◽  
Pharmaceutical Products ◽  
New Drugs ◽  
Pharmaceutical Companies ◽  
Brand Name ◽  
Potential Factors ◽  
Counterfeit Pharmaceuticals ◽  
New Applications

The use of pharmaceutical products in the United States has increased more than the use of any other health resource from 1960 to 1990. In excess of 9,600 drugs were on the market in 1984, and the Food and Drug Administration (“FDA”) approves approximately 30 new drugs and countless new applications for alterations of already existing drugs each year. In 2001, the $300 billion pharmaceutical industry sold $154 billion worth of prescription drugs in the United States alone, nearly doubling its $78.9 billion in sales in 1997. With such a rapid increase in market domination and expenditures, the U.S. government and many hospitals have focused their attention on the sales and pricing practices of pharmaceutical companies, as well as other potential factors contributing to these escalating prices. One such cause of the steadily increasing prices of brand name pharmaceuticals is the sale of fake or counterfeit pharmaceuticals (also called “look-alike” drugs).

scholarly journals Relating Mandates in the United States for Managing the Ocean to Ecosystem Goods and Services Demonstrates Broad but Varied Coverage

2016 ◽  
Vol 3 ◽  
Author(s):  
Christy M. Foran ◽  
Jason S. Link ◽  
Wesley S. Patrick ◽  
Leah Sharpe ◽  
Matthew D. Wood ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Ecosystem Goods And Services ◽  
Goods And Services

Bicycle Helmet Use Patterns Among Children

PEDIATRICS ◽  
1996 ◽  
Vol 97 (2) ◽  
pp. 166-173 ◽  
Author(s):  
Gregory B. Rodgers
Keyword(s):  
United States ◽  
Logistic Regression ◽  
Geographic Location ◽  
Personal Characteristics ◽  
The United States ◽  
National Sample ◽  
Medical Attention ◽  
Survey Method ◽  
Helmet Use ◽  
Use Patterns

Objective. To describe and evaluate the helmet use patterns of children younger than 15 years of age in the United States. Methods. A national telephone survey of bicycle riders was conducted by means of the Mitofsky-Waksberg method of random-digit dialing, a survey method intended to give all telephone numbers in the continental United States an equal probability of selection. Based on information collected in the survey, a logistic regression model was used to determine and quantify the factors associated with helmet use. Results. Information was collected on the bicycle and helmet use patterns of a national sample of 399 children younger than 15 years of age who rode bicycles during the year preceding the survey. This sample projects to the approximately 26.4 million children who are estimated to have ridden bicycles in 1991. About 26% of all child riders owned or had the use of bicycle helmets, and about 15% were reported to have used their helmets all or more than half of the time when riding. Information is provided on the reasons the children did or did not wear helmets. The logistic regression analysis shows that helmet use by children is systematically related to their personal characteristics (eg, age and whether they had previously had bicycle-related accidents requiring medical attention), riding patterns (eg, riding surface), and household demographic characteristics (eg, geographic location and whether household members had attended college). Conclusions. Helmet use rates among children remain low. Less than one fifth of the children who rode bicycles wore helmets all or more than half of the time in 1991. However, based on comparisons with earlier studies, the results of the analysis suggest that helmet use rates have been rising.

scholarly journals Subnational mobility and consumption-based environmental accounting of US corn in animal protein and ethanol supply chains

2017 ◽  
Vol 114 (38) ◽  
pp. E7891-E7899 ◽  
Author(s):  
Timothy M. Smith ◽  
Andrew L. Goodkind ◽  
Taegon Kim ◽  
Rylie E. O. Pelton ◽  
Kyo Suh ◽  
...  
Keyword(s):  
United States ◽  
Supply Chain ◽  
Supply Chains ◽  
Environmental Impacts ◽  
Food System ◽  
The United States ◽  
Environmental Accounting ◽  
Animal Protein ◽  
Corn Production ◽  
Supply Networks

Corn production, and its associated inputs, is a relatively large source of greenhouse gas emissions and uses significant amounts of water and land, thus contributing to climate change, fossil fuel depletion, local air pollutants, and local water scarcity. As large consumers of this corn, corporations in the ethanol and animal protein industries are increasingly assessing and reporting sustainability impacts across their supply chains to identify, prioritize, and communicate sustainability risks and opportunities material to their operations. In doing so, many have discovered that the direct impacts of their owned operations are dwarfed by those upstream in the supply chain, requiring transparency and knowledge about environmental impacts along the supply chains. Life cycle assessments (LCAs) have been used to identify hotspots of environmental impacts at national levels, yet these provide little subnational information necessary for guiding firms’ specific supply networks. In this paper, our Food System Supply-Chain Sustainability (FoodS3) model connects spatial, firm-specific demand of corn purchasers with upstream corn production in the United States through a cost minimization transport model. This provides a means to link county-level corn production in the United States to firm-specific demand locations associated with downstream processing facilities. Our model substantially improves current LCA assessment efforts that are confined to broad national or state level impacts. In drilling down to subnational levels of environmental impacts that occur over heterogeneous areas and aggregating these landscape impacts by specific supply networks, targeted opportunities for improvements to the sustainability performance of supply chains are identified.

Moving toward a Global Supply Chain Operations and the Impact on International Competition

2012 ◽  
pp. 1626-1636
Author(s):  
Seyed-Mahmoud Aghazadeh
Keyword(s):  
United States ◽  
Supply Chain ◽  
Supply Chains ◽  
Global Economy ◽  
The United States ◽  
Global Supply Chain ◽  
Global Supply Chains ◽  
Domestic Firms ◽  
Foreign Products ◽  
The Impact

As the domestic businesses expand, many are making the choice to use foreign products, labor, and services to aid in their production. Global supply chains are minimizing the costs of the production process but are also creating vulnerabilities to home countries. As the global economy changes, the competitiveness between countries grows. Competitiveness can affect everything from a country’s economy to how a firm conducts international business. Addressing the need to find a method to increase the United States competitiveness in the world economy by improving the use of global supply chains would help to make domestic firms more successful in the global economy. Studying how companies position themselves abroad is important to providing insight into how to become more competitive. Worldwide companies are diversifying by moving more of their supply chain to international locations. This is providing them with many benefits such as better markets for products, lower costs, and more advanced technologies. As a result, the competitive strategy of companies is to increase production and decrease costs through the most efficient global supply chain. Maximizing the potential of domestic firms’ global supply chains is one of the most effective ways to increase U.S. competitiveness. If more big businesses in the United States are willing to participate on the global level, then the US will be able to improve their competitiveness.

Moving toward a Global Supply Chain Operations and the Impact on International Competition

2013 ◽  
pp. 466-476
Author(s):  
Seyed-Mahmoud Aghazadeh
Keyword(s):  
United States ◽  
Supply Chain ◽  
Supply Chains ◽  
Global Economy ◽  
The United States ◽  
Global Supply Chain ◽  
Global Supply Chains ◽  
Domestic Firms ◽  
Foreign Products ◽  
The Impact

As the domestic businesses expand, many are making the choice to use foreign products, labor, and services to aid in their production. Global supply chains are minimizing the costs of the production process but are also creating vulnerabilities to home countries. As the global economy changes, the competitiveness between countries grows. Competitiveness can affect everything from a country’s economy to how a firm conducts international business. Addressing the need to find a method to increase the United States competitiveness in the world economy by improving the use of global supply chains would help to make domestic firms more successful in the global economy. Studying how companies position themselves abroad is important to providing insight into how to become more competitive. Worldwide companies are diversifying by moving more of their supply chain to international locations. This is providing them with many benefits such as better markets for products, lower costs, and more advanced technologies. As a result, the competitive strategy of companies is to increase production and decrease costs through the most efficient global supply chain. Maximizing the potential of domestic firms’ global supply chains is one of the most effective ways to increase U.S. competitiveness. If more big businesses in the United States are willing to participate on the global level, then the US will be able to improve their competitiveness.

Relationship Between Second Life and the U.S. Economy

2010 ◽  
pp. 82-94 ◽  
Author(s):  
Rosemarie Reynolds ◽  
Yusuke Ishikawa ◽  
Amanda Macchiarella
Keyword(s):  
United States ◽  
Market Economy ◽  
Second Life ◽  
Federal Reserve ◽  
Significant Relationship ◽  
The United States ◽  
Financial Data ◽  
Goods And Services ◽  
The Relationship ◽  
The U.S

Second Life is a virtual world designed to be a free, laissez-faire market economy in which Linden Dollars are used to buy and sell goods and services. This study investigated the relationship between the economies of Second Life and the United States, using financial data collected from Linden Lab and the Federal Reserve. Partial correlation analyses were computed between two pairs of economic measures, and our results indicated that there was a significant relationship between the two economies.

How International Is Political Science? Patterns of Submission and Publication in the American Political Science Review

2018 ◽  
Vol 51 (4) ◽  
pp. 789-798 ◽  
Author(s):  
Marijke Breuning ◽  
Ayal Feinberg ◽  
Benjamin Isaak Gross ◽  
Melissa Martinez ◽  
Ramesh Sharma ◽  
...  
Keyword(s):  
United States ◽  
Political Science ◽  
Review Process ◽  
American Political Science Review ◽  
Geographic Location ◽  
The United States ◽  
Science Review ◽  
Global North ◽  
American Political Science ◽  
The Impact

ABSTRACTHow international in scope is publishing in political science? Previous studies have shown that the top journals primarily publish work by scholars from the United States and, to a lesser extent, other global-north countries. However, these studies used published content and could not evaluate the impact of the review process on the relative absence of international scholars in journals. This article evaluates patterns of submission and publication by US and international scholars for the American Political Science Review—one of the most selective peer-reviewed journals in the discipline. We found that scholars from the United States and other global-north countries are published approximately in proportion to submissions but that global-south scholars fare less well. We also found that scholars affiliated with prestigious universities are overrepresented, irrespective of geographic location. The article concludes with observations about the implications of these findings for efforts to internationalize the discipline.

Computational Fluid Dynamics (CFD) Within Undergraduate Programs

2007 ◽  
Author(s):  
Kim A. Shollenberger
Keyword(s):  
United States ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Mechanical Engineering ◽  
Manufacturing Industry ◽  
Engineering Students ◽  
Geographic Location ◽  
Undergraduate Curriculum ◽  
The United States ◽  
Computational Fluid Dynamics Cfd

There has been a rapid increase over the past three decades in the use of computational fluid dynamics (CFD) analysis by industry as a tool to design and manufacture products. It is currently a vital part of the engineering process for many companies around the world, and utilized in nearly every manufacturing industry. Employers of engineering students who perform this type of analysis have expressed the need for students at the undergraduate or B.S. level to have some CFD experience. As a result, engineering programs in the United States have begun to respond to this need by developing new curriculum and by exposing students to the use of CFD for research. The level of incorporation and implementation of CFD into the undergraduate curriculum and research at institutions varies widely. The objective of this paper is to conduct a survey of the current use of CFD in the undergraduate curriculum within mechanical engineering departments in the United States. Twenty ABET accredited U.S. schools that offer a B.S. degree in mechanical engineering are investigated in this study that are a representative sample of engineering schools in the U.S. today in terms of admission standards, private versus public, predominate terminal degree, size, and geographic location. Topics investigated include if CFD classes are offered to undergraduates whether they are required or optional, when they are first introduced into the curriculum, number of credit hours dedicated to CFD, types of courses that include CFD, and whether commercial or in-house codes are utilized.

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