Minimum Tillage Corn Trial

Minimum tillage practices have tremendous potential to reduce expenses and potential negative environmental effects caused by intensive cropping operations. Conventional tillage practices require heavy machinery to work and groom the soil surface in preparation for the planter. The immediate advantage of reduced tillage for the farm operator is less fuel expense, equipment, time, and labor required. It’s also clear that intensive tillage potentially increases nutrient and soil losses to our surface waterways. By turning the soil and burying surface residue, more soil particles are likely to detach from the soil surface and run off from agricultural fields. Reducing the amount and intensity of tillage can help build soil structure and reduce soil erosion

Argument Quality, Peripheral Cues and the Elaboration Likelihood Model

The paper discusses the concerns around Elaboration Likelihood Model, in particular regarding how to measure argument quality and peripheral cues

Minimum Tillage Corn Trial

Minimum tillage practices have significant potential to reduce expenses and the potential negative environmental effects caused by intensive tillage operations. Conventional tillage practices require heavy machinery to work and groom the soil surface in preparation for the planter. The immediate advantage of reduced tillage for the farm operator is less fuel expense, equipment, time, and labor required. It’s also clear that intensive tillage potentially increases nutrient and soil losses to our surface waterways. By turning the soil and burying surface residue, more soil particles are likely to detach from the soil surface and increase the potential for run off from agricultural fields. Reducing the amount and intensity of tillage can help build soil structure and reduce soil erosion

What Skills Do Students Need? A Multi-Year Study of IT/IS Knowledge and Skills in Demand by Employers

In the fields of information technology and information systems, faculty must consistently adjust curriculum to meet the demands of the field. However, a challenge they often face is understanding what should be covered, especially given the limited number of courses most universities are able to offer. This research explores the knowledge and skills demanded in the field by surveying a variety of employers across various roles. The survey focused on IS/IT professionals with the inclusion of management who may oversee these professionals. Additionally, those involved in hiring IT/IS professionals were also surveyed to evaluate future hiring needs across various roles. A variety of technologies were examined, including databases, operating systems, networking technologies, and cloud platforms, to understand the technologies currently being utilized at organizations. Furthermore, specific skills (e.g., programming languages, general business, etc.) across a variety of roles were explored to understand what skills are currently sought by employers. The goal of this research is to understand the importance of various technologies and skills to better prepare students for the workforce. This is part of an ongoing study that has evaluated changes in the field over the past 15 years

Ariel - Volume 11 Number 5

Executive Editors Ellen Feldman Leonardo S. Nasca, Jr. Business Managers Alex Macones Martin B. Getzow News Editor Hugh A. Gelabert Features Editor Aaron D. Bleznak CAHS Editor Joan M. Greco Editorial Page Editor Samuel Markind Photography Editor Todd L. Demmy Sports Editor Paul F. Mansfield Commons Editor Saul I. Helfin

Invited Paper: Survey of Technology and Skills in Demand: The 2022 Update

Faculty in the information systems (IS) and information technology (IT) fields are faced with the challenge to keep their curriculum relevant and current. What was taught two years ago will often be outdated and faculty must constantly update their curriculum on which courses should be taught as well as what should be taught within a particular course. This research continues a fifteen-year effort to help understand employer needs in terms of the skills they desire new hires to possess upon employment. This is the sixth version of this employer survey. The survey continues to report the responses of over 500 IS/IT professionals and was expanded to ask additional questions related to salary information. In addition, based on feedback from open-ended questions in a prior survey, new categories were added to the survey. Several key results and changes from prior surveys include that VR/AR (virtual reality/augmented reality) platforms showed the highest anticipated growth rate for all operating platforms in the next two years, analytics tools such as Apache Spark showed high growth rate, and JavaScript maintained the first position for programming languages

Situation Normality and the Shape of Search: The Effects of Time Delays and Information Presentation on Search Behavior

Delays have become one of the most often cited complaints of web users. Long delays often cause users to abandon their searches, but how do tolerable delays affect information search behavior? Intuitively, we would expect that tolerable delays should induce decreased information search. We conducted two experiments and found that as delay increased, a point occurs at which time within-page information search increases; that is, search behavior remained the same until a tipping point occurs where delay increases the depth of search. We argue that situation normality explains this phenomenon; users have become accustomed to tolerable delays up to a point (our research suggests between 7 and 11 s), after which search behavior changes. That is, some delay is expected, but as delay becomes noticeable but not long enough to cause the abandonment of search, an increase occurs in the “stickiness” of webpages such that users examine more information on each page before moving to new pages. The net impact of tolerable delays was counterintuitive: tolerable delays had no impact on the total amount of data searched in the first experiment, but induced users to examine more data points in the second experiment

A Qualitative Investigation of Californian Youth Interests in the Outdoors

Prior research has found connections between youth participation in recreational activities and academic achievement, civic involvement, and improved health. To investigate California youth outdoor recreation attitudes, behaviors, and constraints, eight focus groups were conducted with community recreation center youth participants. Youth answered 10 questions about their experiences, attitudes, and perceptions of outdoor recreation. Data were analyzed using grounded theory. Three to seven axial codes were identified for each question. Results showed that youth want to have more access to outdoor recreational activities. However, there are frequently considerable constraints for the youth to overcome including draws of technology, family obligations, and laziness. Safety was a recurring concern among participants. Understanding youth attitudes and perceptions allows managers to meet youth needs, program for youth interests, and provides a strong foundation for marketing and as a rational for funding grants

Motivations and Preliminary Design for Mid-Air Deployment of a Science Rotorcraft on Mars

Mid-Air Deployment (MAD) of a rotorcraft during Entry, Descent and Landing (EDL) on Mars eliminates the need to carry a propulsion or airbag landing system. This reduces the total mass inside the aeroshell by more than 100 kg and simplifies the aeroshell architecture. MAD’s lighter and simpler design is likely to bring the risk and cost associated with the mission down. Moreover, the lighter entry mass enables landing in the Martian highlands, at elevations inaccessible to current EDL technologies. This paper proposes a novel MAD concept for a Mars helicopter. We suggest a minimum science payload package to perform relevant science in the highlands. A variant of the Ingenuity helicopter is proposed to provide increased deceleration during MAD, and enough lift to fly the science payload in the highlands. We show in simulation that the lighter aeroshell results in a lower terminal velocity (30 m/s) at the end of the parachute phase of the EDL, and at higher altitudes than other approaches. After discussing the aerodynamics, controls, guidance, and mechanical challenges associated with deploying at such speed, we propose a backshell architecture that addresses them to release the helicopter in the safest conditions. Finally, we implemented the helicopter model and aerodynamic descent perturbations in the JPL Dynamics and Real-Time Simulation (DARTS)framework. Preliminary performance evaluation indicates landing and helicopter operations can be achieved up to +5 km MOLA (Mars Orbiter Laser Altimeter reference)