Dually Noted: Understanding the Link Between Dual Enrollment Course Characteristics and Students’ Course and College Enrollment Outcomes

Although dual enrollment programming and interest in how that programming shapes students’ college outcomes have expanded considerably in the past 20 years, policymakers, educational administrators, and practitioners do not have adequate information about which dual enrollment structural options are most effective. Using statewide administrative data in Texas on students who entered 9th grade in 2015 or 2016 and took at least one dual enrollment course through a community college, this paper examines dual enrollment course enrollments and outcomes among recent high school entrants. The authors first describe dual enrollment coursetaking and dual enrollment course characteristics (including instructor affiliation, course location, and instructional modality) for traditional Texas public high school students (as opposed to those attending an Early College High School or charter school), illustrating how students participate in dual enrollment (e.g., the types of courses taken and when in their high school career students take these courses) and highlighting typical course characteristics. They then examine how dual enrollment course and instructor characteristics predict student course completion, course grades, and subsequent college enrollment. The descriptive analyses illuminate striking differences between the demographic and academic backgrounds of students who take academic dual enrollment courses versus career and technical education dual enrollment courses, as well as variation in course characteristics across these two dual enrollment course types. The regression analyses illustrate how several malleable dual enrollment course characteristics are associated with students’ course outcomes and subsequent college enrollment. The relationships that are identified offer insights for the design of dual enrollment courses and programs

Building relationships through integrated online media platforms: Analysis of top 100 global brands

Many studies have examined organizations’ use of specific types of online media, but few studies have examined how organizations generate dialogues and develop relationships by using multiple online communication platforms. This study takes an integrated approach by examining how top global organizations incorporate brand Web sites, Facebook, and Twitter to cultivate relationships with stakeholders. Its findings suggest that those particular online media are used similarly, that is, more for information dissemination than user engagement and more for one-way than two-way communication. The findings also suggest that the types of products promoted can affect the way that organizations use different online media to develop relationships

Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature

The Arctic Oscillation (AO) is the leading climate mode of sea level pressure (SLP) anomalies during cold season in the Northern Hemisphere. To a large extent, the atmospheric climate anomalies associated with positive and negative phases of the AO are opposite to each other, indicating linear impact. However, there is also significant nonlinear relationship between the AO and other winter climate variability. We investigate nonlinear impacts of the AO on surface air temperature (SAT) using reanalysis data and a multi-millennial long climate simulation. It is found that SAT response to the AO, in terms of both spatial pattern and magnitude, is almost linear when the amplitude of the AO is moderate. However, the response becomes quite nonlinear as the amplitude of the AO becomes stronger. First, the pattern shift in SAT depends on AO phase and magnitude, and second, the SAT magnitude depends on AO phase. In particular, these nonlinearities are distinct over the North America and Eurasian Continent. Based on the analyses of model output, we suggest that the nonlinear zonal advection term is one of the critical components in generating nonlinear SAT response, particularly over the North America. Key Points: - We investigate nonlinear impacts of the AO on surface air temperature - The response becomes nonlinear for the strong AO events - The nonlinear advection is a critical component for the nonlinear SAT respons

Impact of Poleward Moisture Transport from the North Pacific on the Acceleration of Sea Ice Loss in the Arctic since 2002

Arctic sea ice area (SIA) during late summer and early fall decreased substantially over the last four decades, and its decline accelerated beginning in the early 2000s. Statistical analyses of observations show that enhanced poleward moisture transport from the North Pacific to the Arctic Ocean contributed to the accelerated SIA decrease during the most recent period. As a consequence, specific humidity in the Arctic Pacific sector significantly increased along with an increase of downward longwave radiation beginning in 2002, which led to a significant acceleration in the decline of SIA in the Arctic Pacific sector. The resulting sea ice loss led to increased evaporation in the Arctic Ocean, resulting in a further increase of the specific humidity in mid-to-late fall, thus acting as a positive feedback to the sea ice loss. The overall set of processes is also found in a long control simulation of a coupled climate model

Hindcast of the 1976/77 and 1998/99 climate shifts in the Pacific

The use of a coupled ocean/atmosphere/sea-ice model to hindcast (i.e. historical forecast) recent climate variability is described and illustrated for the cases of the 1976/77 and 1998/99 climate shift events in the Pacific. The initialization is achieved by running the coupled model in partially coupled mode whereby global observed wind stress anomalies are used to drive the ocean/sea-ice component of the coupled model while maintaining the thermodynamic coupling between the ocean/sea-ice and atmosphere components. Here we show that hindcast experiments can successfully capture many features associated with the 1976/77 and 1998/99 climate shifts. For instance, hindcast experiments started from the beginning of 1976 can capture sea surface temperature (SST) warming in the central-eastern equatorial Pacific and the positive phase of the Pacific Decadal Oscillation (PDO) throughout the 9 years following the 1976/77 climate shift, including the deepening of the Aleutian low pressure system. Hindcast experiments started from the beginning of 1998 can also capture part of the anomalous conditions during the 4 years after the 1998/99 climate. We argue that the dynamical adjustment of heat content anomalies that are present in the initial conditions in the tropics is important for the successful hindcast of the two climate shifts

What motivates parents to mediate children’s use of smartphones? An application of the theory of planned behavior

Applying the Theory of Planned Behavior (TPB), this study examines parents’ attitudes, social norms, self-efficacy, and intentions regarding parental mediation of children’s smartphone use. A survey conducted with parents of young smartphone users aged 10–17 shows that parents tend to perceive discussion-based active mediation to be more desirable, as compared to rule-making restrictive mediation. Findings also indicate that the extent to which parents believe that they have control over their parental mediation practices plays an important role in forming positive intentions to practice parental mediation, regardless of the mediation domain.Accepted versio

Tracking indicies as measures of synchronization of isotopic temperature of NZ abalone shells with ambient water temperature

Canberra, Australi

Effects of Tai Chi and Qigong on Heart Rate Variability: A systematic review and meta-analysis

Objective. We aimed to synthesize existing literature on effects of two related forms of MM, Tai Chi (TC) and Qigong (QG) on HRV parameters in adult population