134 research outputs found
Effective Church Leadership Through Emotional Intelligence
In On Leadership, John Gardner wrote, “Most of what leaders have that enables them to lead is learned.” Effective leadership skills can be learned and become habits. In Primal Leadership, Daniel Goleman wrote, “Not only can emotional intelligence be learned, but it also can be retained over the long term.” Southern Baptist congregants expect their pastors to be theologians, but also effective leaders. The emotional quotient barrier suggests that pastoral leadership is less effective because of behaviors such as inconsistent management of emotions, inability to genuinely connect with people, or leading without inspiration. This has led to stagnated or declining ministries, shorter tenures in a single ministry, leader burnout, and premature resignations. Utilizing case studies, church leader interviews, and surveys, this project will evaluate the leadership style and emotional intelligence of traditional, attractional, organic, and hybrid church leaders. It will detail the emergence of emotional intelligence in church leadership, determine reasons for and the risks of underdeveloped emotional intelligence, and introduce a model for developing and cultivating healthy habits for effective church leadership through emotional intelligence
Structures and Reactivity Patterns of Group 9 Metallocorroles
Group 9 metallocorroles 1-M(PPh_3) and 1-M(py)_2 [M = Co(III), Rh(III), Ir(III); 1 denotes the trianion of 5,10,15-tris-pentafluorophenylcorrole] have been fully characterized by structural, spectroscopic, and electrochemical methods. Crystal structure analyses reveal that average metal−N(pyrrole) bond lengths of the bis-pyridine metal(III) complexes increase from Co (1.886 Å) to Rh (1.957 Å)/Ir (1.963 Å); and the average metal−N(pyridine) bond lengths also increase from Co (1.995 Å) to Rh (2.065 Å)/Ir (2.059 Å). Ligand affinities for 1-M(PPh_3) axial coordination sites increase dramatically in the order 1-Co(PPh_3) < 1-Rh(PPh_3) < 1-Ir(PPh_3). There is a surprising invariance in the M(+/0) reduction potentials within the five- and six-coordinate corrole series, and even between them; the average M(+/0) potential of 1-M(PPh_3) is 0.78 V vs Ag/AgCl in CH_2Cl_2 solution, whereas that of 1-M(py)_2 is 0.70 V under the same conditions. Electronic structures of one-electron-oxidized 1-M(py)_2 complexes have been assigned by analysis of electron paramagnetic resonance spectroscopic measurements: oxidation is corrole-centered for 1-Co(py)_2 (g = 2.008) and 1-Rh(py)_2 (g = 2.003), and metal-centered for 1-Ir(tma)_2 (g_(zz) = 2.489, g_(yy) = 2.010, g_(xx) = 1.884, g_(av) = 2.128) and 1-Ir(py)_2 (g_(zz) = 2.401, g_(yy) = 2.000, g_(xx) = 1.937, g_(av) = 2.113)
Developing a Data-driven Approach to inform Planning in County Health and Human Services Departments in the Context of a Case Study on Obesity
Since the 1970s, the obesity rate has steadily increased due to growing availability of food and declining physical activity. The existing environments within a community, including active recreation opportunities, access to healthy food options, the built environment, and transportation options, can moderate obesity. In Virginia, Fairfax County Health and Human Services (HHS) system is interested in developing the capacity for data-driven approaches to gain insights on current and future issues, such as obesity, to characterize factors at the county and sub-county level, and to use these insights to inform policy options. In exploring these questions, we developed statistical methods to combined data from a multitude of different sources including local administrative data (e.g., tax assessments, land use, student surveys), place-based data, and federal collections. Using synthetic data methods based on imputation, we recomputed American Community Survey statistics for non-Census tract geographic regions for political districts and high school attendance areas. We combined this with environmental factors, such as land dedicated to parks and recreation facilities, as well as measures of the density of healthy and unhealthy food locations to create a map of potentially obesogenic factors. Finally, we combined these data sources with Fairfax County’s youth survey and trained a random forest model to predict the effects of the environment on healthy food consumption and exercise. Our analysis highlights the need for (administrative) data at a fine scale and recommends policy changes concerning the recording and sharing of local data to better inform the policy and program development
Electrostatic Brakes Enable Individual Joint Control of Underactuated, Highly Articulated Robots
Highly articulated organisms serve as blueprints for incredibly dexterous
mechanisms, but building similarly capable robotic counterparts has been
hindered by the difficulties of developing electromechanical actuators with
both the high strength and compactness of biological muscle. We develop a
stackable electrostatic brake that has comparable specific tension and weight
to that of muscles and integrate it into a robotic joint. Compared to
electromechanical motors, our brake-equipped joint is four times lighter and
one thousand times more power efficient while exerting similar holding torques.
Our joint design enables a ten degree-of-freedom robot equipped with only one
motor to manipulate multiple objects simultaneously. We also show that the use
of brakes allows a two-fingered robot to perform in-hand re-positioning of an
object 45% more quickly and with 53% lower positioning error than without
brakes. Relative to fully actuated robots, our findings suggest that robots
equipped with such electrostatic brakes will have lower weight, volume, and
power consumption yet retain the ability to reach arbitrary joint
configurations.Comment: 17 pages, 15 figure
Optical Proximity Sensing for Pose Estimation During In-Hand Manipulation
During in-hand manipulation, robots must be able to continuously estimate the
pose of the object in order to generate appropriate control actions. The
performance of algorithms for pose estimation hinges on the robot's sensors
being able to detect discriminative geometric object features, but previous
sensing modalities are unable to make such measurements robustly. The robot's
fingers can occlude the view of environment- or robot-mounted image sensors,
and tactile sensors can only measure at the local areas of contact. Motivated
by fingertip-embedded proximity sensors' robustness to occlusion and ability to
measure beyond the local areas of contact, we present the first evaluation of
proximity sensor based pose estimation for in-hand manipulation. We develop a
novel two-fingered hand with fingertip-embedded optical time-of-flight
proximity sensors as a testbed for pose estimation during planar in-hand
manipulation. Here, the in-hand manipulation task consists of the robot moving
a cylindrical object from one end of its workspace to the other. We
demonstrate, with statistical significance, that proximity-sensor based pose
estimation via particle filtering during in-hand manipulation: a) exhibits 50%
lower average pose error than a tactile-sensor based baseline; b) empowers a
model predictive controller to achieve 30% lower final positioning error
compared to when using tactile-sensor based pose estimates.Comment: 8 pages, 6 figure
Molecular Redox: Revisiting the Electronic Structures of the Group 9 Metallocorroles
The electronic structures of monocationic tris[(5,10,15-pentafluorophenyl)-corrolato]iridium compounds, [Ir(tpfc)L_2]^+, where L = 4-cyanopyridine [1]^+, pyridine [2]^+, 4-methoxypyridine [3]^+, or 4-(N,N′-dimethylamino)pyridine [4]^+, have been probed by electron paramagnetic resonance (EPR) spectroscopy, Ir L_(3,2)-edge X-ray absorption spectroscopy (XAS), UV/visible (UV–vis) spectroelectrochemistry, and density functional theoretical (DFT) calculations. The data demonstrate that these complexes, which have been previously formulated as either of the limiting cases [Ir^(III)(tpfc^•)L_2]^+ or [Ir^(IV)(tpfc)L_2]^+, are best described as possessing a singly occupied molecular orbital (SOMO) dominated by tpfc with small but significant Ir admixture. EPR g-values and electronic absorption spectra are reproduced well using a simple DFT approach. These quantities depend profoundly upon Ir orbital contribution to the SOMO. To wit, the calculated Ir spin population ranges from 10.6% for [1]^+ to 16.3% for [4]^+, reflecting increased Ir d mixing into the SOMO with increasingly electron-rich axial ligation. This gives rise to experimentally measured g_z values ranging from 2.335 to 2.533, metal-to-ligand charge transfer (MLCT) bands ranging from 14730 and 14330 cm^(–1), and [Ir(tpfc)L_2]^(+/0) reduction potentials ranging from 0.305 to 0.035 V vs Fc^(+/0). In addition, the calculated Ir character in the SOMO tracks with estimated Ir L_(3,2) XAS branching ratios (EBR), reflecting the increasing degree of Ir d orbital character upon proceeding from [1]^+ to [4]^+
Leveraging U.S. Army Administrative Data for Individual and Team Performance
The Army possesses vast amounts of administrative (archival) data about Soldiers. These data sources include screening tests, personnel action codes, training scores, global assessments, physical fitness scores, and more. However, the Army has yet to integrate these data to create a holistic operating picture. Our research focuses on repurposing Army administrative data to (1) operationalize social constructs of interest to the Army (e.g., Army Values, Warrior Ethos) and (2) model the predictive relationship between these constructs and individual (i.e., Soldier) and team (i.e., unit) performance and readiness. The goal of the project is to provide people analytics models to Army leadership for the purposes of optimizing human capital management decisions.
Our talk will describe the theoretical underpinnings of our human performance model, drawing on disciplines such as social and industrial/organizational psychology, as well as our experience gaining access to and working with Army administrative data sources. Access to the archival administrative data is provided through the Army Analytics Group (AAG), Person-event Data Environment (PDE). The PDE is a business intelligence platform that has two central functions: (1) to provide a secure repository for data sources on U.S. military personnel; and (2) to provide a secure collaborative work environment where researchers can access unclassified but sensitive military data
Clinical Rotation Handbook Promotes Orthopaedic Resident Wellness: A Quality Improvement Study
Introduction. Transitioning from one clinical rotation to the next may be particularly stressful for orthopaedic residents attempting to navigate new work environments with new faculty mentors and new patients. The purpose of this quality improvement (QI) project was to determine if resident stress could be improved by using a handbook to disseminate key rotation-specific data during quarterly rotation transition periods.
Methods. A comprehensive electronic handbook was created by residents to describe each rotation in our orthopaedic training program in terms of: (1) faculty and staff contact data, (2) daily clinic and surgery schedules, (3) resident responsibilities and faculty expectations, and (4) key resources and documents. At rotation transition, a session in the academic schedule was dedicated for outgoing residents to update the handbook and to sign-out to incoming residents. Pre- and post-handbook questionnaires were administered to assess resident perceptions of stress or anxiety, preparedness, and confidence before commencing the new rotation. Nonparametric data derived from the surveys were analyzed using the sign test choosing p < 0.05 for a two-tailed test as the level of statistical significance.
Results. Most residents perceived improvements in stress/anxiety, preparedness, and confidence understanding rotation expectations after the handbook was implemented. Changes in these three outcome parameters were statistically significant.
Conclusions. This rotation transition QI initiative consisting of a resident-authored, rotation-specific electronic handbook and dedicated verbal sign-out session enhanced resident wellness by decreasing stress, increasing preparedness, and improving confidence among residents starting a new rotation. Similar online resources may be useful for trainees in other specialties
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