scholarly journals Assessing the strategic evolution of U.S. low cost airlines in the post-9/11 environment

2012 ◽  
Vol 23 (1) ◽  
pp. 77-98
Author(s):  
Carl A Scheraga ◽  
Paul Caster
Keyword(s):  
Planning Process ◽  
Cost Model ◽  
Low Cost ◽  
Quantitative Methodology ◽  
Strategic Positioning ◽  
Operating Income ◽  
Cost Leadership ◽  
Operating Environments ◽  
Time Period ◽  
Southwest Airlines

It has been suggested in the literature that low-cost airlines have, in varying degrees, departed from the original low-cost model introduced by Southwest Airlines. This study provides a multi-year analysis in the post-9/11 time period, for the years 2004-2009, of the demonstrated strategic positioning choices of U. S. low-cost airlines. The sample utilized is restricted to U. S. low-cost carriers so as not to conflate operating environments. Furthermore, a quantitative methodology is employed to measure effectively these choices and to facilitate inter-airline comparisons. Airlines, as part of their strategic planning process, articulate positions with regard to cost leadership, product differentiation, and growth. Decisions implemented are dynamic and inter-temporal in nature. Managers thus need a multi-period methodology to evaluate the implementation of strategic positions. One such approach is the strategic analysis of operating income utilized in this study.

scholarly journals A Strategic Variance Analysis of the Profitability of U.S. Network Air Carriers

2011 ◽  
Author(s):  
Paul Caster ◽  
Carl A. Scheraga
Keyword(s):  
Product Differentiation ◽  
Planning Process ◽  
Low Cost ◽  
Variance Analysis ◽  
Operating Income ◽  
Cost Leadership ◽  
Differentiation Strategy ◽  
Cost Strategy ◽  
Low Cost Strategy ◽  
Air Carriers

Airlines, as part of their strategic planning process, articulate positions with regard to cost leadership, product differentiation, and growth. Decisions implemented are dynamic and inter-temporal in nature. Therefore, it is often difficult to assess the effectiveness of changes in strategies, particularly since such effectiveness is often a function of the confounding forces of organizational strategy and market conditions. Managers thus need a multi-period methodology to evaluate the implementation of strategic positions. One such approach is the strategic variance analysis of operating income. Horngren et al. (2000, 2006, 2012) demonstrate a methodological template for decomposing operating income into three components: (1) growth, (2) price recovery, and (3) productivity. It is suggested that the price recovery component assesses a firm’s product differentiation strategy and that the productivity component assesses a firm’s low-cost strategy. Thus, this framework is very much in the spirit of Porter’s (1980) seminal work.This study examines U.S. network airlines in the post-9/11 environment. Utilizing the above methodology, it first identifies comparative strategic positions across airlines and then assesses the implementation efficacy of these positions.

scholarly journals An Analysis of a Strategic Transformation Plan: The Case of Alaska Airlines

2013 ◽  
Author(s):  
Paul Caster ◽  
Carl Scheraga
Keyword(s):  
Product Differentiation ◽  
Airline Industry ◽  
Low Cost ◽  
Operating Income ◽  
Cost Leadership ◽  
Differentiation Strategy ◽  
Cost Strategy ◽  
Low Cost Strategy ◽  
Network Carrier ◽  
Strategic Transformation

In 2003, amid the turmoil of the U.S. airline industry in the post-9/11 environment, the senior management of the Alaska Air Group announced a “strategic vision” entitled “Alaska 2010.” The pronouncement articulated positions with regard to cost leadership, product differentiation, and growth. This study empirically assesses the efficacy of this decision with regard to the major network carrier of the air group, Alaska Airlines. The analysis focuses on the period beginning with the announcement and ending in 2010.The implementation of such a strategic protocol is dynamic and inter-temporal in nature. Therefore, it is often difficult to assess the effectiveness of changes in strategies, particularly since such effectiveness is often a function of the confounding forces of organizational strategy and market conditions. Thus, this study utilizes the multi-period methodology of the strategic variance analysis of operating income.This methodology decomposes operating income into three components: (1) growth, (2) price recovery, and (3) productivity. This is of particular interest from a strategic planning perspective, as the price component evaluates a company’s product differentiation strategy while the productivity component evaluates whether an airline’s low cost strategy was successful because of efficiency gains.

scholarly journals Urban Air Quality Modeling Using Low-Cost Sensor Network and Data Assimilation in the Aburrá Valley, Colombia

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 91
Author(s):  
Santiago Lopez-Restrepo ◽  
Andres Yarce ◽  
Nicolás Pinel ◽  
O.L. Quintero ◽  
Arjo Segers ◽  
...  
Keyword(s):  
Air Quality ◽  
Data Assimilation ◽  
Transport Model ◽  
Cost Model ◽  
Low Cost ◽  
Model Performance ◽  
Monitoring Network ◽  
Correlation Factor ◽  
Chemical Transport Model ◽  
High Quality

The use of low air quality networks has been increasing in recent years to study urban pollution dynamics. Here we show the evaluation of the operational Aburrá Valley’s low-cost network against the official monitoring network. The results show that the PM2.5 low-cost measurements are very close to those observed by the official network. Additionally, the low-cost allows a higher spatial representation of the concentrations across the valley. We integrate low-cost observations with the chemical transport model Long Term Ozone Simulation-European Operational Smog (LOTOS-EUROS) using data assimilation. Two different configurations of the low-cost network were assimilated: using the whole low-cost network (255 sensors), and a high-quality selection using just the sensors with a correlation factor greater than 0.8 with respect to the official network (115 sensors). The official stations were also assimilated to compare the more dense low-cost network’s impact on the model performance. Both simulations assimilating the low-cost model outperform the model without assimilation and assimilating the official network. The capability to issue warnings for pollution events is also improved by assimilating the low-cost network with respect to the other simulations. Finally, the simulation using the high-quality configuration has lower error values than using the complete low-cost network, showing that it is essential to consider the quality and location and not just the total number of sensors. Our results suggest that with the current advance in low-cost sensors, it is possible to improve model performance with low-cost network data assimilation.

Evaluating and Exploring Successful Disruptive Innovation in the Aviation Industry From the Perspective of Consumers

2021 ◽  
Vol 13 (4) ◽  
pp. 105-119
Author(s):  
Gang-Hoon Seo
Keyword(s):  
Word Of Mouth ◽  
Low Cost ◽  
Disruptive Innovation ◽  
Point Of View ◽  
Aviation Industry ◽  
Basic Service ◽  
Low Cost Carriers ◽  
Content Analyses ◽  
Southwest Airlines

Since Southwest Airlines' disruptive innovation was introduced, low-cost carriers (LCCs) have had a prominent impact on the aviation industry. Therefore, considerable attention has been paid to the LCC model. However, it is still not clear whether it is a successful disruptive innovation, or what factors and differentiation points for successful LCC service exist from the passengers' perspective. As this study's methodology, quantitative and qualitative content analyses are conducted using the word-of-mouth data of 1,854 passengers of 20 airlines. This study found that the LCC model is perceived as a successful disruptive innovation from the passengers' point of view. For successful LCC service, LC airlines should offer higher quality services than passengers' expectations using basic service elements. Also, good staff characteristics, leaving a professional impression, and providing good optional services could play a role as differentiation tools.

scholarly journals Key Strategies to Overcome Cost Overruns Issues in Building Maintenance Management

2018 ◽  
Vol 7 (2.29) ◽  
pp. 269 ◽  
Author(s):  
Sylvia Gala Mong ◽  
Sarajul Fikri Mohamed ◽  
Mohd Saidin Misnan
Keyword(s):  
Planning Process ◽  
Cost Model ◽  
Spare Parts ◽  
Maintenance Management ◽  
Maintenance Cost ◽  
Push Factors ◽  
Cost Overruns ◽  
Sustainable Building ◽  
Maintenance Strategies ◽  
Building Maintenance

The building maintenance is a crucial part of the life cycle of the building. The maintenance strategies are planned to maintain the condition of the building for specified functions. The maintenance planning requires a comprehensive assessment in determining the effectiveness of building performance, especially in the maintenance budgets planning process. The effective budget preparation will reduce the risk of cost overruns and help the organization to execute the repair works efficiently with sufficient resources. This study attempts to identify the issues related to maintenance cost and proposed the key strategies for improving the sustainable building maintenance budgeting in dealing with the cost overruns. This paper utilizes a qualitative approach through a literature review of secondary data from previous studies. The proposed cost model of maintenance strategies will be used as a basis for further investigation and validation towards promoting the sustainable building maintenance management. The studies identified the push factors that influence the maintenance cost; human factors, tools and equipment, spare parts and materials, funds allocation and available information. Each of the push factors needs to be well-considered to ensure that the maintenance activities can be done efficiently and to avoid the issues of cost overruns.  

scholarly journals Sustainability and Depletion Accounting: A Case Study of Oil in Libya

2017 ◽  
Vol 7 (1) ◽  
pp. 34 ◽  
Author(s):  
Abdulrazag Mohamed Etelawi ◽  
Keith A. Blatner ◽  
Jill McCluskey
Keyword(s):  
Sustainable Development ◽  
Planning Process ◽  
National Income ◽  
Policy Makers ◽  
The Sustainable Development ◽  
Time Period ◽  
Oil Resources ◽  
Income Development ◽  
Per Capita ◽  
High Level

There is a strong need to study sustainability and depletion accounting of oil in the Libyan economy because oil production and export is the single largest source of national income in the country. This study covers the time period from 1990 to 2009. Throughout this period, the Libyan national economy used its oil and petroleum industries to increase national income. Development sustainability can be defined as investment divided by GDP. This measure provides an indication of the low level of sustainable development in Libya over the period of analysis, which is 0.38 on average. It is important that the Libyan government develop and implement plans and strategies for achieving sustainability and the maintenance of oil resources.Carbon dioxide emissions provide another indication of the presence or absence of sustainability. The ratio of carbon dioxide ranged from a minimum of 8.50 metric tons per capita in 1990 to 10.00 metric tons per capita in 2009 and average 9.07 metric tons per capita over the course of the study period. CO2 emissions were also much higher than other countries in the Middle East and North Africa. This suggests there was relatively little interest in the sustainable development of the Libyan economy during this period. The Environment Domestic Product (EDP) increased sharply from the beginning of the study at $24.23 billion in 1991 to $45.87 billion in 2009 in constant dollars. Again, one can infer that policy makers did not consider the depletion of oil resources and the environment in their planning process, or at least did not place a high level of concern on this issue.

scholarly journals Time-Series Statistical Model for Forecasting Revenue and Risk Management

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Mihir Kelkar ◽  
Cosmin Borsa ◽  
Lina Kim
Keyword(s):  
Time Series ◽  
Low Cost ◽  
Moving Average ◽  
Business Strategies ◽  
Annual Reports ◽  
Fiscal Year ◽  
Sarima Model ◽  
Autoregressive Integrated Moving Average ◽  
Low Cost Carrier ◽  
Southwest Airlines

Following a Low-Cost Carrier (LCC) model, Southwest Airlines has consistently demonstrated growing annual revenues up until the start of the COVID-19 pandemic. Southwest’s quarterly revenue shows that there exists a strong seasonal component with the revenue in the first quarter of the fiscal year (September) significantly higher than other quarters. Using the quarterly revenue data we constructed a time-series model: a seasonal autoregressive integrated moving average (SARIMA) model to forecast Southwest’s revenue over 2020. We then performed a cost and solvency risk analysis using the company’s financial results from its annual reports to analyze Southwest’s financial performance due to COVID-19, and proposed business strategies to keep Southwest financially stable.

Extending the lymphoblastoid cell line model for drug combination pharmacogenomics

2021 ◽  
Author(s):  
Adrian J Green ◽  
Benedict Anchang ◽  
Farida S Akhtari ◽  
David M Reif ◽  
Alison Motsinger-Reif
Keyword(s):  
Molecular Mechanisms ◽  
Cost Model ◽  
Low Cost ◽  
Clinical Effectiveness ◽  
Precision Oncology ◽  
Combination Drug ◽  
Human Lymphoblastoid Cell ◽  
Drug Classes ◽  
Integrated Omics ◽  
Underlying Mechanisms

Combination drug therapies have become an integral part of precision oncology, and while evidence of clinical effectiveness continues to grow, the underlying mechanisms supporting synergy are poorly understood. Immortalized human lymphoblastoid cell lines (LCLs) have been proven as a particularly useful, scalable and low-cost model in pharmacogenetics research, and are suitable for elucidating the molecular mechanisms of synergistic combination therapies. In this review, we cover the advantages of LCLs in synergy pharmacogenomics and consider recent studies providing initial evidence of the utility of LCLs in synergy research. We also discuss several opportunities for LCL-based systems to address gaps in the research through the expansion of testing regimens, assessment of new drug classes and higher-order combinations, and utilization of integrated omics technologies.

Emergency surgical obstetrics simulation training: an ex vivo low-cost model using bovine uterus and porcine bladder for haemostatic uterine brace suture techniques

2020 ◽  
Vol 7 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Amy Sinclair ◽  
Mohamed Sayed Allam ◽  
Evelyn Jean Ferguson ◽  
Mohamed Khairy Mehasseb
Keyword(s):  
Postpartum Haemorrhage ◽  
Ex Vivo ◽  
Cost Model ◽  
Low Cost ◽  
Broad Ligament ◽  
Training Model ◽  
Mortality And Morbidity ◽  
Emergency Situations ◽  
Healthcare Settings

Postpartum haemorrhage remains a leading cause of maternal mortality and morbidity. While conventional obstetrics training curricula describe at length the management of postpartum haemorrhage, obstetrics trainees rarely have exposure to surgical management of postpartum haemorrhage in emergency situations due to reduced hours of training. Procedures such as the transverse or longitudinal haemostatic uterine brace sutures are recognised to be safe, simple and allow for the preservation of the uterus. Training during emergency situations is rarely practical or ideal. We describe a simple model that simulates the atonic postnatal uterus and allows trainees to practise the safe placement of the brace sutures. We use a bovine uterus model with attached broad ligament, bladder and ureters for the transverse haemostatic suture. For the longitudinal brace suture, we use a porcine bladder to simulate the uterus, with the ureters and bladder mesentery simulating the tubes and broad ligaments. The placement of the sutures can be practised with the uterus/bladder closed, or open akin to a caesarean section. Tissue dissection and feedback is almost similar to in vivo conditions. The sutures are inserted and driven using the material and correct placement used during real surgery. Our wet lab training model allows the acquisition, maintenance and enhancement of the required technical skills in a controlled environment, using inexpensive, reproducible and widely available specimens. The model has proved successful in both high and low-resource healthcare settings.

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