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The Evolving Structure of Multi-Hospital Systems in the US: Focus on California

Health 2021年第7期13卷 757-765页

作者： Glenn Melnick june F. O’Leary Sol Price School of Public Policy University of Southern California Los Angeles CA USA

Objectives: Hospital consolidation and the growth of multi-hospital systems are generating media headlines in the US. While there is a growing literature on the role of multi-hospital systems in the US health care system, it is still quite limited. This study helps fill the gap by documenting and describing the structure and evolution of multi-hospital systems in California over a recent 18-year period. Methods: Descriptive analysis of a hospital level longitudinal database covering the period 2002-2019 in California. Results: The total number of hospitals declined by 40 hospitals, from 445 to 405, over the study period and the total number of multi-hospital systems increased substantially from 14 systems in 2002 to 30 systems in 2019. As a result, the number and proportion of all California hospitals that were part of a multi-hospital system grew—from 177 in 2002 to 238 in 2019. By 2019, 59% of all hospitals were part of systems (compared to 40% in 2002). The size distribution of multi-hospital systems in California changed substantially over time. in the early period, larger systems dominated the system landscape. Now, half of all systems have 5 or fewer hospitals compared to 29% in 2002, while the percentage of systems with 25 or more members has declined from 25% to just 7%. interestingly, the clinical service mix of hospital systems has changed substantially. in 2002, all 14 systems were largely acute care focused. By 2019, less than half of systems had acute care as their only and primary focus. Conclusions: Combined, these findings provide insight into the development, evolution and growing role of hospitals systems in our health care system and identify new areas for further research.

关键词： Hospital Systems Consolidation Multi-Hospital Systems

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Development of Mg-based Hydrogen Storage Alloy

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Journal of Materials Science & Technology 2001年第6期17卷 590-596页

作者： Lian bang WANG, Yijing WANG and Hualang YUAM institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China Manuscript received june 30, 2000, in revised form September 20, 20001 inst. of New Energy Mat. Chem. Nankai Univ. Tianjin 300071 China

Mg-based hydrogen storage alloys are considered as a promising candidate for hydrogen system because of its lightweight, high storage capacity, low price and rich mineral resources. in detail, we reviewed the preparation and properties of Mg-Ni-based hydrogen storage alloys. All kinds of attempts have been done to improve the hydriding and dehydriding behaviors. it is found that the partial substitution of foreign elements can decrease the hydrogen absorption temperature, especially the substitution of a more electronegative element, such as Ai and Mn. Mechanical alloying (MA) and mechanical grinding (MG) are the most effective methods to improve the hydriding/dehydriding kinetics and electrochemical capacity, and decrease the desorption temperature. but the corrosion resistance is so poor that the 80% of maximum capacity is lost within ten cycles. Microencapsulation is a useful measurement for improving the corrosion resistance and electrocatalytic activity. fn order to improve the properties of the alloys for practical application, the alloys should have a large number of defects, which give activated sites, subsequently, MA, MG and electroless plating should be used to improve the hydriding/dehydriding kinetics and protect the surface of alloys, respectively. The new composite Mg-based alloys give a new way for the hydrogen storage material to practical application. Furthermore we put forward several problems which will be discussed in future.

关键词： Development of Mg-based Hydrogen Storage Alloy Ni

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New perspectives on computer concepts 8th ed.

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丛书名：经典原版书库

2006年

作者： Parsons june Jamrich

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萌萌喵星人

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作者： june Studio绘

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Design of a 6 DOF input Device in Telerobotics and Virtual Reality

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Journal of Systems Engineering and Electronics 2002年第2期13卷 36-44页

作者： Peng Gang, Huang Xinhan, Xiong Chunshan & Wang MinControl Science and Engineering Department, Huazhong University of Science and Technology, Wuhan 430074, P.R. China(Received june 6,2001) Control Science and Engineering Department Huazhong University of Science and Technology Wuhan 430074 P. R. China

The pincipl of a 6 DOF (degress of freedom) input device using ultrasonic distance measurement is presented in this paper. The system employs the method of measuring the time of flight. in addition, some techniques, including automatic gain control, self-adaptive variable threshold and temperature compensation, are also used to improve precision. Then, the positions and orientation of the input device can be calculated by the method of spatial analytic geometry. Meanwhile, commands from the 3-D input device are detected and carried out. The validity and precision of the input device are verified by the experiment in a robot system. The proposed device not only can be used for end effector position and orientation measurement in telerobotics, but also can be an interactive device in virtual reality systems, such as helmet tracking, viewpoint navigation and object manipulation.

关键词： Degrees of freedom (mechanics) Three dimensional Ultrasonic applications Virtual reality

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Exome-wide variation in a diverse barley panel reveals genetic associations with ten agronomic traits in Eastern landraces

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Journal of Genetics and Genomics 2023年第4期50卷 241-252页

作者： june-Sik Kim Kotaro Takahagi Komaki inoue Minami Shimizu Yukiko Uehara-Yamaguchi Asaka Kanatani Daisuke Saisho Ryuei Nishii Alexander ELipka Takashi Hirayama Kazuhiro Sato Keiichi Mochida Bioproductivity informatics Research Team RIKEN Center for Sustainable Resource ScienceYokohama 230-0045Japan institute of Plant Science and Resources Okayama UniversityKurashiki 710-0046Japan Kihara institute for Biological Research Yokohama City UniversityYokohama 244-0813Japan Graduate School of Nanobioscience Yokohama City UniversityYokohama 236-0027Japan School of information and Data Sciences Nagasaki UniversityNagasaki 852-8521Japan Department of Crop Sciences University of IllinoisUrbanaIL 61801USA Microalgae Production Control Technology Laboratory RIKEN Baton Zone ProgramRIKEN Cluster for ScienceTechnology and Innovation HubYokohama 230-0045Japan

Barley(Hordeum vulgare ***)is one of the first crops to be domesticated and is adapted to a wide range of *** barley germplasm collections possess valuable allelic variations that could further improve barley *** barley genomics has offered a global picture of allelic variation among varieties and its association with various agronomic traits,polymorphisms from East Asian varieties remain *** this study,we analyze exome polymorphisms in a panel of 274 barley varieties collected worldwide,including 137 varieties from East Asian countries and *** reveal the underlying population structure and conduct genome-wide association studies for 10 agronomic ***,we examin genome-wide associations for traits related to grain size such as awn length and glume *** results demonstrate the value of diverse barley germplasm panels containing Eastern varieties,highlighting their distinct genomic signatures relative to Western subpopulations.

关键词： Barley Exome-seq Genome-wide association study(GWAS) Population structure Allelic variation

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Technical and instrumental prerequisites for single-port laparoscopic solo surgery:state of art

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World Journal of Gastroenterology 2015年第15期21卷 4440-4446页

作者： Say-june Kim Sang Chul Lee Department of Surgery Daejeon St. Mary’s Hospital College of Medicine The Catholic University of Korea Daejeon

With the aid of advanced surgical techniques and instruments, single-port laparoscopic surgery(SPLS) can be accomplished with just two surgical members: an operator and a camera assistant. Under these circumstances, the reasonable replacement of a human camera assistant by a mechanical camera holder has resulted in a new surgical procedure termed singleport solo surgery(SPSS). in SPSS, the fixation and coordinated movement of a camera held by mechanicaldevices provides fixed and stable operative images that are under the control of the operator. Therefore, SPSS primarily benefits from the provision of the operator's eye-to-hand coordination. Because SPSS is an intuitive modification of SPLS, the indications for SPSS are the same as those for SPLS. Though SPSS necessitates more actions than the surgery with a human assistant, these difficulties seem to be easily overcome by the greater provision of static operative images and the need for less lens cleaning and repositioning of the camera. When the operation is expected to be difficult and demanding, the SPSS process could be assisted by the addition of another instrument holder besides the camera holder.

关键词： Camera holder Laparoscopy Single-portlaparoscopic surgery Single-port solo surgery Solosurgery

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Study on the isozymes in two species of prawns

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Acta Oceanologica Sinica 1998年第3期17卷 343-348页

作者： Li Taiwu Su Xiurong Zhang Jian Yin Hongying Xie Mingjie Ning Shuxiang(Received june 25, 1997 accepted August 30, 1997) institute of Maring Biotechnology Liaoning Normal University Dalian 116029 China Department of Biology Liaoning Normal University Dalian 116029 China

This paper studies the activity and absolute content of six kinds of isozymes, such as lactate dehydrogenase,malate dehydrogenase, glucose-6-phosphate dehydrogenase, glutamate dehydrogenase, isocitrate dehydrogenase, alcoholdehydrogenase in Penaeus chinensis and P. japonicus. And by comparing, this study approaches the mechanism of high-er bought-endurance in P. japonicus.

关键词： P. chinensis. P.japonicus isozyme.

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Distribution of fouling bryozoans in the northern South China Sea

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Acta Oceanologica Sinica 1998年第3期17卷 349-355页

作者： Yan Yan Yan Wenxia Dong Yu Wang Huajie Yan Tao and Liang Guanhe(Received june 2, 1997 accepted August 20, 1997) South China institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

This paper reports the species composition and distribution of fouling bryozoans in the northern SouthChina Sea. 34 species identified belong to 23 genera, 22 families of fouling bryozoa, of which most of 24 species on thebuoys attached to concrete sinkers. The 13 species on platforms mainly included Schizoporella errata and Membranipora savartii. Depth distribution of species, larval settlement behaviour and larvae type of fouling bryozoa are discussed.

关键词： Bryozoans fouling organism coastal waters South China Sea

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计算机文化 1版

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丛书名：计算机科学丛书

2008年

作者： (美) june Jamrich Parsons Dan Oja

全书共分12章, 分别介绍了计算机和数字基础知识、计算机硬件、计算机软件、操作系统和文件管理、局域网和无线局域网、因特网等。

ISBN: (纸本)9787894827593;9787111246879

全书共分12章, 分别介绍了计算机和数字基础知识、计算机硬件、计算机软件、操作系统和文件管理、局域网和无线局域网、因特网等。

关键词：电子计算机

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