106 research outputs found

    Guest Delight: The Influence of Sustainable Performance and Guests\u27 Perceived Health and Safety

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    Recently, the COVID-19 pandemic has further emphasized the importance of guests’ health, safety, and well-being in the hotel industry. Further, in today’s highly competitive environment, hotels must orchestrate memorable experiences for guests to realize their value and become ambassadors for the brand. The purpose of this research is to explore the antecedents (i.e., sustainable performance, safety, and health) and the outcomes (i.e., brand love, trust, and willingness to pay more) of customer delight. Surveys will be distributed to hotel guests and the results can provide insights and implications for scholars and practitioners to better understand the concept of customer delight

    Rotary Compressor Noise Analysis Using Mechanisms and Electromagnetics Coupled Approach

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    This research is conducted to investigate noise source and design low noise compressors. For improving energy efficiency, the rotary compressor with variable speed brushless DC motor is increasingly adopted for appliances. However brushless DC motor makes more compressor vibration than constant speed motor compressor at high speed operating condition. Therefore it is necessary to reduce noise and vibration for improving air conditioner quality. In this study, compressor’s noise and vibration are simulated using structural and electromagnetics coupled methods. To simulate the actual motor movements, precession motion of rotor is applied for simulatio

    A new mixed group 5 metal selenide, Nb1.41V0.59Se9

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    The new mixed-metallic phase, niobium vanadium nona­selenide, (Nb2-xVx)Se9 (0.18≤ x ≤ 0.59) is isostructural with monoclinic V2Se9. The structure is composed of chains of bicapped trigonal–prismatic [MSe8] units. The metal (M) site is occupied by statistically disordered Nb [0.706 (5)] and V [0.294 (5)] atoms. Two trigonal prisms are linked by sharing a recta­ngular face composed of two Se2 2− pairs. Through three edging and capping Se atoms, the chains are extended along [101]. The chain shows alternating short [2.8847 (7) Å] and long [3.7159 (7) Å] M—M distances. The structure shows a wide range of Se—Se inter­actions. In addition to the Se2 2− pairs of the recta­ngular face, an inter­mediate Se⋯Se separation [2.6584 (5) Å] is found. The amount of each metal can vary, [(Nb2-xVx)Se9, 0.18 ≤ x ≤m 0.59] and they seem to form a random substitutional solid solution. The M—M distances increase gradually by increasing the amount of Nb atoms. The classical charge-balance of the compound can be described as [M 4+]2[Se2 2−]2[Se5 4−]

    Spatial factors related to occupants’ behavioral beliefs about window and blind use in multifamily residential buildings

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    Occupant behavior is one of the factors that impact the buildings’ energy consumption. Occupants interact with building systems to adjust their indoor environmental conditions to meet their comfort levels. Occupants’ behavior to control those multiple conditions have been studied in isolation. Previous research highlighted the impact that contextual factors, such as interior design, have on occupants’ energy-related behaviors. This study focused on psychological, contextual, and environmental reasons leading to energy-related occupants’ behavior. It investigates the impact of spatial factors: orientation, floor level, space type, and furniture layout on occupants’ behavioral beliefs about operating windows and adjusting blinds. Results revealed a significant relationship between the spatial factors and occupants’ behavioral beliefs about operating windows and adjusting blinds. It is recommended to consider occupants’ behavioral beliefs related to the spatial factors in the preliminary stages of the design process to contribute to efficient space planning and thus enhance the building's energy performance.Design and Merchandisin

    Cs0.49NbPS6

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    The quaternary thio­phosphate, Cs0.49NbPS6, caesium hexa­thio­niobiophosphate(V), has been synthesized by the reactive halide flux method. The title compound is isotypic with Rb0.46TaPS6 and is made up of a bicapped trigonal–biprismatic [Nb2S12] unit and a tetra­hedral [PS4] group. The [Nb2S12] units linked by the [PS4] tetra­hedra form infinite chains, yielding a three-dimensional network with rather large van der Waals gaps along the c axis in which the disordered Cs+ ions reside. The electrons released by the Cs atoms are transferred to the pairwise niobium metal site and there are substantial inter­metallic Nb—Nb bonding inter­actions. This leads to a significant decrease of the inter­metallic distance in the title compound compared to that in TaPS6. The classical charge balance of the title compound may be represented as [Cs+]0.49[Nb4.51+][P5+][S2−]4[S2 2−]

    A Case of Primary Paraganglioma that Arose in the Pancreas: the Color Doppler Ultrasonography and Dynamic CT Features

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    Paragangliomas rarely originate from the pancreas and they are characterized on imaging studies as well-marginated, hypervascular masses with cystic areas. We herein report on a case report of pancreatic paraganglioma in a 57-year-old woman, which was confirmed on pathology. Color Doppler ultrasonography and dynamic CT demonstrated a well-demarcated, extremely hypervascular mass with prominent intratumoral vessels and early contrast filling of the draining veins from the mass. Endoscopic retrograde cholangiopancreatography showed that the main pancreatic duct was displaced and mildly dilated

    Understanding the Impact of Professional Development for a Cohort of Teachers with Varying Prior Engineering Teaching Experience

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    Engineering for US All (e4usa) is a National Science Foundation-funded first-of-its-kind initiative aimed at making engineering more inclusive and accessible to underrepresented populations. The ‘‘for us all’’ mission of e4usa encompasses both students and teachers. Paramount to the success of e4usa was the construction of professional development (PD) experiences to prepare and support teachers with different levels of engineering teaching experience as they implemented the e4usa yearlong course. The perspectives of nine teachers with varying degrees of engineering teaching experience were examined during two PD opportunities to compare experiences and dynamics between the teachers. Data sources consisting of focus groups and artifacts created during the PD were analyzed using inductive coding and the constant comparative method. The distinct themes that emerged included teachers redefining engineering, growing confidence to teach engineering, benefiting from the PD, receiving support from other teachers, experiencing imposter syndrome, and renewing a passion for engineering education. The results provide implications for how engineering education PD may be developed to allow for reciprocal support and mentoring that supports all teachers regardless of engineering teaching experience. The results also inform future e4usa efforts and aim to change the structure of high school engineering education

    Operation of national coordinating service for interhospital transfer from emergency departments: experience and implications from Korea

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    Background Since 2014, Korea has been operating the National Emergency Medical Situation Room (NEMSR) to provide regional emergency departments (EDs) with coordination services for the interhospital transfer of critically ill patients. The present study aimed to describe the NEMSRs experience and interhospital transfer pattern from EDs nationwide, and investigate the factors related to delayed transfers or transfers that could not be arranged by the NEMSR. Methods This study was a retrospective cross-sectional analysis of the NEMSRs coordination registry from 2017 to 2019. The demographic and hospital characteristics related to emergency transfers were analyzed with hierarchical logistic models. Results The NEMSR received a total of 14,003 requests for the arrangement of the interhospital transfers of critically ill patients from 2017 to 2019. Of 10,222 requests included in the analysis, 8297 (81.17%) successful transfers were coordinated by the NEMSR. Transfers were requested mainly due to a shortage of medical staff (59.79%) and ICU beds (30.80%). Delayed transfers were significantly associated with insufficient hospital resources. The larger the bed capacity of the sending hospital, the more difficult it was to coordinate the transfer (odds ratio [OR] for transfer not arranged = 2.04; 95% confidence interval [CI]: 1.48–2.82, ≥ 1000 beds vs. < 300 beds) and the longer the transfer was delayed (OR for delays of more than 44 minutes = 2.08; 95% CI: 1.57–2.76, ≥ 1000 beds vs. < 300 beds). Conclusions The operation of the NEMSR has clinical importance in that it could efficiently coordinate interhospital transfers through a protocolized process and resource information system. The coordination role is significant as information technology in emergency care develops while regional gaps in the distribution of medical resources widen

    Predictive Value of Pharyngeal Width at Rest (JOSCYL Width) for Aspiration in Elderly People

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    Objective To develop a new tool for aspiration risk prediction based on pharyngeal width at rest in older adults with symptoms of aspiration. Methods Lateral cervical spine roentgenograms were obtained from 33 older adult patients who complained of dysphagia and from 33 healthy, age-matched controls. Pharyngeal width at rest was measured at two points. We named the average of these two pharyngeal widths ‘JOSCYL Width’, calculated ‘JOSCYL Scale’, and compared these parameters between dysphagia and control groups. Correlations of individual JOSCYL Width and JOSCYL Scale, with Penetration Aspiration Scale (PAS) and Dysphagia Outcome and Severity Scale (DOSS) scores were analyzed for the dysphagia group. To determine optimal cutoff points for predicting aspiration, a receiver operating characteristic curve analysis was performed on JOSCYL Width and JOSCYL Scale. Results Both JOSCYL Width and JOSCYL Scale of the dysphagia group were larger than those of the control group (p<0.001). The correlation between JOSCYL Width and severity of dysphagia was significant for the dysphagia group (PAS p=0.007; DOSS p=0.012). The correlation between JOSCYL Scale and the severity of dysphagia was also significant for the dysphagia group (PAS p=0.009; DOSS p=0.011). Optimal cutoffs for JOSCYL Width and JOSCYL Scale for predicting aspiration were 20.0 mm and 5.9, respectively. Conclusion JOSCYL Width and JOSCYL Scale can be new indicators for predicting aspiration in older adults. They are both precise and easy to use

    Guanabenz Acetate Induces Endoplasmic Reticulum Stress–Related Cell Death in Hepatocellular Carcinoma Cells

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    Background Development of chemotherapeutics for the treatment of advanced hepatocellular carcinoma (HCC) has been lagging. Screening of candidate therapeutic agents by using patient-derived preclinical models may facilitate drug discovery for HCC patients. Methods Four primary cultured HCC cells from surgically resected tumor tissues and six HCC cell lines were used for high-throughput screening of 252 drugs from the Prestwick Chemical Library. The efficacy and mechanisms of action of the candidate anti-cancer drug were analyzed via cell viability, cell cycle assays, and western blotting. Results Guanabenz acetate, which has been used as an antihypertensive drug, was screened as a candidate anti-cancer agent for HCC through a drug sensitivity assay by using the primary cultured HCC cells and HCC cell lines. Guanabenz acetate reduced HCC cell viability through apoptosis and autophagy. This occurred via inhibition of growth arrest and DNA damage-inducible protein 34, increased phosphorylation of eukaryotic initiation factor 2α, increased activating transcription factor 4, and cell cycle arrest. Conclusions Guanabenz acetate induces endoplasmic reticulum stress–related cell death in HCC and may be repositioned as an anti-cancer therapeutic agent for HCC patients
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