Commercial Truck Parking and Other Safety Issues

Commercial truck parking is a safety issue, since trucks are involved in approximately 10% of all fatal accidents on interstates and parkways in Kentucky. Drivers experience schedule demands and long hours on the road, yet they cannot easily determine available parking locations. The objective of this study was to identify information related to parking demand, locations with documented or potential safety issues, and potential countermeasures. The literature review indicated substantial research has been done on commercial vehicle parking, and works have outlined the necessary facilities to accommodate trucks before drivers exceed their allowable hours of driving. Attention to commercial truck parking became a priority with SAFETEA-LU, and this focus continued with the inclusion of Jason’s Law as part of MAP-21. Surveys were conducted to determine how frequently commercial vehicles used parking facilities on interstates in Kentucky. The surveys focused on the state’s two primary north-south interstates (I-65 and I-75). Data samples were also obtained from the other interstates in Kentucky (I-24, I-64, and I-71). Of the 4715 parking spaces surveyed during daytime observations, 2143 were in use, or 45 percent. Of 7,844 parking spaces surveyed during nighttime observations, 6803 were in use, or 87 percent. Crash data were analyzed for the period 2010-2013. Of 848 crashes that were either shoulder-related or fatigue-related, collision reports were reviewed. 239 crashes were related to commercial truck parking. Two-thirds of all crashes included in the analysis occurred on I-75, I-65, I-64, and I-71. Crash cluster locations appeared to be directly related to proximity and usage rate of parking facilities. To address truck parking demand and to improve safety, the following general recommendations were identified in the review of literature: 1) use public and private parking areas to increase capacity, 2) use ITS to improve use of parking facilities, 3) provide realtime information that informs truck drivers of parking facility locations with available spaces, 4) combine GPS tracking with electronic communication to notify truckers of nearest parking, and 5) monitor parking usage rates to determine future needs. Part of the literature review included recommendations from truck drivers. Based on observations at sites on interstates in Kentucky, several locations would benefit from increasing the number of parking spaces, including a number of locations on I-64, I-65, I-71 and I-75. Any site that had 90 percent or more of its spaces used during the surveys could be a candidate for an expansion of existing parking spaces or for development of a new facility to accommodate more parking

You (Don’t) Look Marvelous: Considerations for Employers Regulating Employee Appearance

Under federal law, employers are generally allowed to set policies regulating employees’ appearance, provided that those policies do not impinge on groups specifically protected under federal statute. State and local laws, however, may preclude employers from implementing such dress and appearance policies. Employers whose workers are unionized must consider the provisions of the bargaining agreement. One trend in connection with regulations relating to employees’ appearance and dress is that creative lawyers have stretched the law to cover certain workers

Peloton’s ride to growth

Theoretical basis The theoretical basis for this case is a focus on vertical integration, first-mover advantage and competitive dynamics. Vertical integration is based on Williamson’s (1979) theory of transaction-cost economics as it relates to vertical integration; the discussion on first-mover advantage is built off of Suarez and Lanzolla’s (2005) dynamics of first-mover advantage; and the analyzes on competitive dynamics derives from the MacMillan et al. (1985) early empirical tests of interfirm rivalry dynamics. Research methodology The authors conducted extensive research using the following sources: IBISWorld, MergentOnline and academic journals, trade magazines and websites. Additionally, the authors successfully piloted the case on more than 350 undergraduate students enrolled in a business and corporate strategy course. Case overview/synopsis Peloton used vertical integration to control the creation of its own software, bikes, exercise classes and retail outlets. In doing so, Peloton was one of the first companies in the industry to have near full control of the production process (Gross and Caisman, 2019). Due to this integration, Peloton was one of the fitness equipment industry leaders. However, Peloton’s high level of vertical integration coupled with rapid growth led to lackluster profitability. Given the rise in popularity of in-home exercise equipment, Peloton had room to continue its growth, but the question remained whether it was strategically positioned to do so. Complexity academic level This case is best taught in undergraduate and graduate strategy courses. For undergraduate courses, it could be incorporated into lessons on competitive dynamics, internal analysis and first-mover advantage and strategic positioning. For graduate courses, it could be incorporated into lessons on vertical integration and delving more in-depth into the long-term sustainability of having a first-mover advantage

Integrated simulation and optimisation of hybrid photovoltaic-thermal (PV-T) and photovoltaic systems for decentralised rural hot water provision and electrification

Demands for electricity and hot water continue to rise worldwide, with many people in low-income countries, especially in rural areas, lacking access to these basic services. Decentralised minigrids, capable of powering small off-grid communities, are increasingly used in low-income countries as a means of providing power to the 13% of people globally without access to electricity. Hybrid solar photovoltaic-thermal (PV-T) collectors combine both photovoltaic (PV) cell and solar-thermal absorbers and, therefore, output both electricity and heat from a single collector with efficiency benefits over standalone PV panels and solar-thermal collectors. Despite this, no models have yet been developed capable of assessing the performance of PV-T collectors generalisable across a range of off-grid settings. We present an integrated model for simulating and optimising combined systems comprising PV panels and PV-T collectors, accurate to within +/- 5% rms error, connected to wider electrical and hot water systems, and employ this to evaluate their potential to meet both electrical and hot-water demands of rural communities. We provide a tool for simulating the lifetime output from combined PV and PV-T systems, assessing their economic and environmental impact, and for optimising the systems to meet the needs of specific communities. We carry out simulations for a case study of a combined PV and PV-T system in Uttar Pradesh, India, and find that the system is able to meet 59.3% and 33.5% of hot water demand for upper and lower bounds for installed capacity. We carry out optimisations for static high demand and growing low-demand scenarios and find that that 35 kWpel and 5 hot-water tanks and 75 kWpel and 15 hot-water tanks are needed to meet these demand scenarios respectively

GameStop’s next play: reconfiguring the value offering

Theoretical basis The theoretical basis for this case is a focus on strategic positioning as related to Porter’s generic strategies. The case describes GameStop’s previous differentiation approach, executed through physical stores and knowledgeable staff. With technological shifts and the introduction of digital downloads, this strategy is less effective. The case requires students to consider how GameStop might revise its generic strategy based on the new competitive landscape in which it operates. Research methodology In writing this case, the research team conducted thorough analysis through primary data collection in stores as well as secondary data collection through the use of market research tools, such as IBIS World, MergentOnline, S&P Net Advantage, and academic journals, trade magazines, and websites. Case overview/synopsis With high uncertainty shown by stakeholders about the future of GameStop coupled with falling share prices, the company must find a way to stay in play given the rapidly growing digital gaming market. As it planned to close at least 150 of its 7,500 stores, the company was starting to take measures to reduce operational costs and restructure to sectors that best fit consumer interests. GameStop’s core competencies were no longer aligned with market conditions, and its executives were now questioning where it could expand the organization’s operations as they focused on finding untapped areas of the market that have an opportunity for a new competitive advantage. Given its unique market share in gaming memorabilia and trade-in values, students are tasked with finding GameStop’s existing competitive advantages or identifying potential new ones that can be leveraged in a technology-driven industry. Complexity academic level This case could be taught at either the graduate or undergraduate level strategy course. At the undergraduate level, it would be best taught when discussing industry life cycle or competitive dynamics. At the graduate level, MBAs could discuss competitive dynamics facing GameStop and how it might find areas for future strategic growth

Streaming success: positioning Roku’s future in a hypercompetitive industry

Theoretical basis The theoretical basis for this case is a focus on strategic positioning as related to Porter’s Generic Strategies. The case accounts Roku’s journey in facing additional competition, highlighting the competitive dynamics at play. The case requires students to consider how Roku might revise its generic strategy based on the new competitive landscape in which it operates. Research methodology In writing this case, the research team used secondary research that was informed by interviews with Roku users. Resources such as IBIS World, MergentOnline, academic journals, trade magazines and websites were used to inform and verify information. Case overview/synopsis As the market disruptor of how media was consumed, Roku had been connecting customers, publishes and advertisers with its unique capabilities for over 10 years. With the belief that all TV content should be available through streaming, Roku had forever changed the traditional model of how media was distributed and consumed. By capitalizing on the previously untapped economic opportunity of TV streaming platforms, Roku had made itself the premier streaming broadcast service for users, content publishers and advertisers. The company was now faced with the difficult task of finding the best ways to keep innovation high and continue to grow. Complexity academic level This case could be taught at either the graduate or undergraduate level strategy course. At the undergraduate level, it would be best taught in a strategy course, when discussing industry life cycle or vertical integration. At the graduate level, MBAs could discuss the competitive dynamics and hypercompetition within the industry

Particle Size Distribution and Human Respiratory Deposition of Trace Metals in Indoor Work Environments

Respiratory response to inhalation of fine particles has been investigated for the aerosol generated by welding. Particles were sampled using a pair of 5-stage cascade impactors operating at 1 l./min flow rate. The subject exhaled into one impactor through an air ballast arrangement, and the other impactor simultaneously sampled the surrounding air. Particle size fractions were analyzed for principal elemental constituents from sulphur to lead using proton induced X-ray emission, PIXE. The results indicated a complex respiratory response, including both increase in particle size due to exposure to high humidity in the respiratory tract and deposition of particles during inhalation. The response was found to be different for the element group Mn, Cr, Fe, Ni compared to the group K, Ca, Ti by observing the associations among the elements as a function of particle size in the inhaled and exhaled aerosol. However, for respiratory deposition efficiency alone in all runs averaged together, no systematic differences between the different elements are demonstrated at the 99 % confidence level

Cardiovascular responses during light-intensity aerobic exercise with varying levels of limb occlusion pressures.

International Journal of Exercise Science 16(2): 676-687, 2023. The study aimed to assess cardiovascular responses to low-intensity aerobic exercise with varying levels of limb occlusion pressures (LOP) in a healthy population of men and women 30 to 60 years. The study was a single-session repeated measures design. Thirty individuals completed the study. All subjects participated in a single bout of low-intensity cycling (30-39% HRR) with bilateral lower extremity (LE) BFR for four 5-minute stages [0% (No BFR), 40%, 60%, and 80% LOP] with a 2-minute active rest between stages (BFR pressure released). The subjects’ systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), oxygen saturation (SpO2), and ratings of perceived exertion (RPE) were measured at rest, peak, immediately post, post-15 minutes, and post-30 minutes. Peak SBP (no BFR 160.7 ±19.1 mmHg; 40% LOP 173.6 ± 18.7 mmHg; 60 % LOP; 182.5 ± 21.1 mmHg; 80% LOP 193.5± 23.3 mmHg ; p\u3c0.001; =.747), DBP (no BFR 74.9 ± 8.5 mmHg; 40% LOP (83.0 ± 9.0 mmHg;60 % LOP 90.4 ± 8.7 mmHg; 80% LOP 97.7 ± 9.5 mmHg ;p\u3c0.001; =.924), MAP (no BFR 103.5 ± 10.1 mmHg; 40% LOP 113.2 ± 10.5 mmHg; 60% LOP 121.1 ± 11.7 mmHg; 80% LOP 129.7 ± 12.9 mmHg; p\u3c0.001; =.960), and RPE (No BFR 10.0 ± 2.0; 40 % LOP 11.5 ± 2.3; 60% LOP 13.2 ± 2.6; 80% LOP 14.5 ± 3.; p\u3c0.001; =.826) were significantly higher with each progressing stage. The results indicate that low-intensity cycling with bilateral LE BFR for each LOP stage resulted in elevated SBP, DBP, MAP, and RPE despite maintaining a fixed HR