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  1. Article ; Online: The Extent Hospital Organizational Factors Influence Inpatient Care Delivery

    Julie Ann Sakowski / Paula H Song

    Health Services Insights, Vol

    A Case Study Looking at Knee and Hip Replacement Surgery

    2022  Volume 15

    Abstract: There is a body of Implementation and Dissemination research describing the importance of “context”—the characteristics describing the setting where a process or innovation occurs—when evaluating delivery, outcomes and cost of health services. These ... ...

    Abstract There is a body of Implementation and Dissemination research describing the importance of “context”—the characteristics describing the setting where a process or innovation occurs—when evaluating delivery, outcomes and cost of health services. These contextual factors, which can occur at the system, organization, or provider level, may either facilitate or erect barriers to the utilization of evidence-based practices and the outcomes achieved. This paper examines the influence of organizational structure and operating environment characteristics of where inpatient health care is delivered, controlling for patient and provider characteristics, on health services delivery and outcomes achieved. We used inpatient cost-of-care to represent the bundle of services provided to patients receiving primary knee and hip replacement procedures. Data includes patient level data from discharge records for 62 140 knee replacements and 42 392 hip replacements from the 2015 AHRQ Healthcare Cost and Utilization Project State Inpatient Discharge database and hospital characteristics from the 2015 American Hospital Association survey. Multi-level linear estimation models controlling for patient and payer characteristics were employed to assess the impact of specific organizational and operating environment factors. We found that although patient and payer characteristics significantly impacted the inpatient cost of care, there is significant variation between hospitals and among physicians within a hospital beyond what can be explained by patient, payer and local price effect characteristics. Organizational and physician characteristics that had the most significant impact on cost of care included the volume of services provided, urban location, and for-profit ownership. These factors can inform future policy and program design and evaluation.
    Keywords Medicine (General) ; R5-920 ; Public aspects of medicine ; RA1-1270
    Subject code 360
    Language English
    Publishing date 2022-07-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: A Cyclic Periodic Wave Function Approach for the Study of Infinitely Periodic Solid-State Systems. I. Application to the C–H···π(CC) Hydrogen Bonding Systems

    Susanne Raynor / Hua H. Song

    ACS Omega, Vol 5, Iss 42, Pp 27546-

    2020  Volume 27555

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Development of a Cyclic Periodic Wave Function Approach for the Study of Infinitely Periodic Solid-State Systems

    Susanne Raynor / Hua H. Song

    ACS Omega, Vol 5, Iss 48, Pp 31060-

    2020  Volume 31068

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: A Cyclic Periodic Wave Function Approach for the Study of Infinitely Periodic Solid-State Systems

    Hua H. Song / Susanne Raynor

    ACS Omega, Vol 5, Iss 42, Pp 27556-

    II. Application to Helical Polysaccharides

    2020  Volume 27565

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Regional study of mode-2 internal solitary waves at the Pacific coast of Central America using marine seismic survey data

    W. Fan / H. Song / Y. Gong / S. Yang / K. Zhang

    Nonlinear Processes in Geophysics, Vol 29, Pp 141-

    2022  Volume 160

    Abstract: In this paper, a regional study of mode-2 internal solitary waves (ISWs) at the Pacific coast of Central America is carried out using the seismic reflection method. The observed relationship between the dimensionless propagation speed and the ... ...

    Abstract In this paper, a regional study of mode-2 internal solitary waves (ISWs) at the Pacific coast of Central America is carried out using the seismic reflection method. The observed relationship between the dimensionless propagation speed and the dimensionless amplitude (DA) of the mode-2 ISW is analyzed. When DA < 1.18, the dimensionless propagation speed seems to increase with increasing DA, divided into two parts with different growth rates. When DA > 1.18, the dimensionless propagation speed increases with increasing DA at a relatively small growth rate. We suggest that the influences of seawater depth (submarine topography), pycnocline depth, and pycnocline thickness on the propagation speed of the mode-2 ISW in the study area cause the relationship between dimensionless propagation speed and DA to diversify. The observed relationship between the dimensionless wavelength and the DA of the mode-2 ISW is also analyzed. When DA < 1, the nondimensional wavelengths seem to change from 2.5 to 7 for a fixed nondimensional amplitude. When DA > 1.87, the dimensionless wavelength increases with increasing DA. Additionally, the seawater depth has a great influence on the wavelength of the mode-2 ISW in the study area. Overall, the wavelength increases with increasing seawater depth. As for the vertical structure of the amplitude of the mode-2 ISW in the study area, we find that it is affected by the nonlinearity of the ISW and the pycnocline deviation (especially the downward pycnocline deviation).
    Keywords Science ; Q ; Physics ; QC1-999 ; Geophysics. Cosmic physics ; QC801-809
    Subject code 535
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Integrating Primary Sources, Artifacts, and Museum Visits into the Primary Years Programme Inquiry Curriculum in an International Baccalaureate Elementary Setting

    Kim H. Song

    Journal of Social Studies Education Research, Vol 8, Iss 3, Pp 24-

    2017  Volume 49

    Abstract: Questions remain about inquiry instruction, while research confirms that using primary sources can aid students’ inquiry learning processes. This study questioned: “How do second grade teachers at an International Baccalaureate Organization/IBO language ... ...

    Abstract Questions remain about inquiry instruction, while research confirms that using primary sources can aid students’ inquiry learning processes. This study questioned: “How do second grade teachers at an International Baccalaureate Organization/IBO language immersion setting incorporate inquiry methods in instructional practices?”; “How does training in the use of primary sources, artifacts, and museum visits shape second grade teachers’ instructional practice?” A Library of Congress Teaching with Primary Sources grant supported this university-school social studies partnership which accessed artifacts, primary sources, and a national archives and museum. Data sources in this mixed methods study were from the SAMPI Inquiry Observation Instrument, interviews, and observations in French and Spanish language settings. Analysis revealed teachers appropriating inquiry learning via museum/archives visits and using primary sources in a study of the content areas of history and geography of the French and Spanish Colonial fur trade era, leading to subsequent integration of primary sources and learning kits in the school network’s inquiry curriculum design process.
    Keywords Primary Sources ; Social Studies ; History ; Inquiry learning ; IBO/International Baccalaureate Organization ; Primary Years Programme/PYP ; Education (General) ; L7-991 ; Social Sciences ; H
    Subject code 370
    Language English
    Publishing date 2017-11-01T00:00:00Z
    Publisher Journal of Social Studies Education Research
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Sinking fate and carbon export of zooplankton fecal pellets

    H. Wang / Z. Liu / J. Li / B. Lin / Y. Zhao / X. Zhang / J. Cao / J. Zhang / H. Song / W. Wang

    Biogeosciences, Vol 20, Pp 5109-

    insights from time-series sediment trap observations in the northern South China Sea

    2023  Volume 5123

    Abstract: The sinking of zooplankton fecal pellets is a key process in the marine biological carbon pump, facilitating the export of particulate organic carbon (POC). Here, we analyzed zooplankton fecal pellets collected by two time-series sediment traps deployed ... ...

    Abstract The sinking of zooplankton fecal pellets is a key process in the marine biological carbon pump, facilitating the export of particulate organic carbon (POC). Here, we analyzed zooplankton fecal pellets collected by two time-series sediment traps deployed on mooring TJ-A1B in the northern South China Sea (SCS) from May 2021 to May 2022. The results show a seasonal variability in both fecal pellet numerical (FPN) flux and fecal pellet carbon (FPC) flux, with peaks in November to April and June to August. It implies that the fecal pellet flux is largely regulated by the East Asian monsoon system. Vertical analysis further shows that FPN and FPC fluxes are higher at 1970 than at 500 m water depth, with larger pellets occurring in the deeper water, indicating a significant influence of mesopelagic and bathypelagic zooplankton community and lateral transport on deep-sea FPC export. However, the biovolume of amorphous pellets decreases significantly from 500 to 1970 m water depth, implying that these fecal pellets are broken and fragmented during the sinking process, possibly due to zooplankton grazing and disturbance by deep-sea currents. The contribution of fecal pellets to total POC export in the northern SCS is on average 3.4 % and 1.9 % at 500 and 1970 m water depth, respectively. This study highlights that the sinking fate of fecal pellets is regulated by marine primary productivity, deep-sea-dwelling zooplankton communities, and deep-sea currents in the tropical marginal sea, thus providing a new perspective for exploring the carbon cycle in the world ocean.
    Keywords Ecology ; QH540-549.5 ; Life ; QH501-531 ; Geology ; QE1-996.5
    Subject code 551
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Effects of Flammulinavelutipes Stem Base on Microflora and Volatile Fatty Acids In Caecum of Growing Layers under Heat Stress Condition

    S Wang / S Mahfuz / H Song

    Brazilian Journal of Poultry Science, Vol 21, Iss

    2019  Volume 4

    Abstract: ABSTRACT The present study was undertaken to investigate the effects of Flammulinavelutipes stem base (FVS) on growth performance, microbial flora and volatile fatty acids of growing layers under heat stress condition. A total of 72 ISA Brown hens were ... ...

    Abstract ABSTRACT The present study was undertaken to investigate the effects of Flammulinavelutipes stem base (FVS) on growth performance, microbial flora and volatile fatty acids of growing layers under heat stress condition. A total of 72 ISA Brown hens were randomly divided into six treatments: thermoneutral temperature control group (CON), heat stress control group (HS), heat stress antibiotic group (ANT) as positive control and heat stress FVS groups (20, 40 or 60 g/kg FVS). The experimental period had a duration of 28 d (days 84-112). On day 98, daily gain average was significantly higher (p<0.05) in the FVS groups than in the HS group. The number of bands in the FVS groups were higher (p<0.05) than in the HS group on day 98. The microbial similarity between the 60 g/kg FVS group and the HS group were the lowest on day 98. FVS group’s specific bacteria were mainly Coprococcus comes, [Clostridium] papyrosolvens, Butyricicoccuspullicaecorumon day 98. Whereas on day 112, the FVS groups specific bacteria were mainly Parabacteroides distasonis, Coprobacterfastidiosus, Elusimicrobiumminutum. The content of acetic acid and butyric acid were higher (p<0.05) in 20 g/kg FVS group than in the CON group on day 112. In conclusion, FVS can lighten the adverse effect of heat stress by increasing the diversity of intestinal flora in growing layers.
    Keywords Laying hens ; thermal stress ; microbial flora ; mushroomstembase ; short chain fatty acids ; Animal culture ; SF1-1100 ; Veterinary medicine ; SF600-1100 ; Zoology ; QL1-991
    Subject code 571 ; 630
    Language English
    Publishing date 2019-12-01T00:00:00Z
    Publisher Fundação APINCO de Ciência e Tecnologia Avícolas
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: An Estimation of Top-Down NO x Emissions from OMI Sensor Over East Asia

    Kyung M. Han / Hyun S. Kim / Chul H. Song

    Remote Sensing, Vol 12, Iss 2004, p

    2020  Volume 2004

    Abstract: This study focuses on the estimation of top-down NO x emissions over East Asia, integrating information on the levels of NO 2 and NO, wind vector, and geolocation from Ozone Monitoring Instrument (OMI) observations and Weather Research and Forecasting ( ... ...

    Abstract This study focuses on the estimation of top-down NO x emissions over East Asia, integrating information on the levels of NO 2 and NO, wind vector, and geolocation from Ozone Monitoring Instrument (OMI) observations and Weather Research and Forecasting (WRF)-Community Multiscale Air Quality (CMAQ) model simulations. An algorithm was developed based on mass conservation to estimate the 30km×30km resolved top-down NO x emissions over East Asia. In particular, the algorithm developed in this study considered two main atmospheric factors—i) NO x transport from/to adjacent cells and ii) calculations of the lifetimes of column NO x (τ). In the sensitivity test, the analysis showed the improvements in the top-down NO x estimation via filtering the data (τ ≤ 2 hours). The best top-down NO x emissions were inferred after the sixth iterations. Those emissions were 11.76 Tg N yr -1 over China, 0.13 Tg N yr -1 over North Korea, 0.46 Tg N yr -1 over South Korea, and 0.68 Tg N yr -1 over Japan. These values are 34%, 62%, 60%, and 47% larger than the current bottom-up NO x emissions over these countries, respectively. A comparison between the CMAQ-estimated and OMI-retrieved NO 2 columns was made to confirm the accuracy of the newly estimated NO x emission. The comparison confirmed that the estimated top-down NO x emissions showed better agreements with observations (R 2 = 0.88 for January and 0.81 for July).
    Keywords Top-down NOx emission ; Lifetime of column NOx ; NOx transport ; OMI sensor ; Science ; Q
    Subject code 290
    Language English
    Publishing date 2020-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Calculation of Start-Oscillation-Current for Lossy Gyrotron Traveling-Wave Tube (Gyro-TWT) Using Linear Traveling-Wave Tube (TWT) Parameter Conversions

    Heather H. Song

    Journal of Electromagnetic Analysis and Applications, Vol 05, Iss 01, Pp 1-

    2013  Volume 4

    Abstract: The start-oscillation-current of a gyro-TWT (gyrotron traveling-wave tube) determines the stable operating current level of the device. The amplifier is susceptible to oscillations when the operating current level is higher than the start-oscillation ... ...

    Abstract The start-oscillation-current of a gyro-TWT (gyrotron traveling-wave tube) determines the stable operating current level of the device. The amplifier is susceptible to oscillations when the operating current level is higher than the start-oscillation current. There are several ways of calculating the start-oscillation current, including using the linear and nonlinear theory of a gyro-TWT. In this paper, a simple way of determining the start-oscillation current of lossy gyro-TWT is introduced. The linear TWT parameters that include the effects of synchronism, loss, and gain, were converted to gyro-TWT parameters to calculate the start-oscillation-current. The dependence on magnetic field, loss, and beam alpha was investigated. Calculations were carried out for a V-band gyro-TWT for both operating and competing modes. The proposed method of calculating the start-oscillation current provides a simple and fast way to estimate the oscillation conditions and can be used for the design process of a gyro-TWT.
    Keywords Start-Oscillation-Current ; Gyro-TWT ; TWT ; Lossy ; Stable ; Competing Mode ; Electricity and magnetism ; QC501-766 ; Physics ; QC1-999 ; Science ; Q ; DOAJ:Electricity ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
    Subject code 621
    Language English
    Publishing date 2013-01-01T00:00:00Z
    Publisher Scientific Research Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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