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A tutorial on 5G and the progress in China None

Shan-zhi CHEN, Shao-li KANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 309-321 doi: 10.1631/FITEE.1800070

Abstract: 5G has been developing at high speed since 2012 and has become a global economic driver. In this paper, we offer a survey of 5G covering visions, requirements, roadmap, key technologies, standardization, frequency management, technology trials, industrial ecology, and a list of main 5G contributors. We also point out the contributions to 5G from China, aiming to be ‘globally leading in 5G’ by acting as a main 5G contributor in standardization and promoting/enhancing the Chinese 5G industry. Finally, progress on 5G is reviewed mixed with our rethinking of 5G.

Keywords： 5G     IMT-2020     Key technology     Standardization     Field trial    

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Trial design of arch bridge of composite box section with steel web-concrete flange

Jiangang WEI, Qingwei HUANG, Baochun CHEN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 370-375 doi: 10.1007/s11709-010-0073-7

Abstract: Bridge (the longest concrete arch bridge in the world with a main span of 420 m) as a prototype, trialComparison of quantities and structural behaviors of the prototype concrete arch with the two trial designed

Keywords： steel webs     concrete     box arch     trial design     structural behaviors     finite element method    

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Balancing method without trial weights for rotor systems based on similitude scale model

Ruiduo YE, Liping WANG, Xiaojie HOU, Zhong LUO, Qingkai HAN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 571-580 doi: 10.1007/s11465-018-0478-x

Abstract:

A balancing method without trial weights based on the dynamic similitude scale model was proposedThe balancing method without trial weights was proposed based on the similitude relationship of the influenceThe effect of the balancing method without trial weights was compared with that of the traditional influence

Keywords： rotor system     dynamic similitude     balancing     without trial weights     influence coefficient    

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Development and clinical trial of a novel bioactive bone cement

LEONG John, LI Zhaoyang, LU William

Frontiers of Medicine 2008, Volume 2, Issue 2,   Pages 117-126 doi: 10.1007/s11684-008-0022-1

Abstract: Strontium (Sr) and related compounds have become more attractive in the prevention and treatment of osteoporosis. Previously, we developed a novel bioactive bone cement which is mainly composed of strontium-containing hydroxyapatite (Sr-HA) filler and bisphenol A diglycidylether dimethacrylate (Bis-GMA) resin. This bone cement is superior to conventional polymethylmethacrylate (PMMA) bone cement in bioactivity, biocompatibility, and osseointegration. It also has shown sufficient mechanical strength properties for its use in percutaneous vertebroplasty (PVP) and total hip replacement (THR). In this paper, we review the and clinical evidence for the effectiveness of this bioactive bone cement.

Keywords： bioactivity     effectiveness     strontium-containing hydroxyapatite     osseointegration     sufficient mechanical    

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A randomized, controlled, open label non-inferiority trial of intravenous ferric carboxymaltose versus

Frontiers of Medicine doi: 10.1007/s11684-023-1001-2

Abstract: This open label, randomized, controlled, non-inferiority trial was conducted at multiple sites in China

Keywords： iron deficiency     anemia     intravenous iron     ferric carboxymaltose     iron sucrose     Hb response     early response    

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diets lead to greater weight loss and better glucose homeostasis than exercise: a randomized clinical trial

Frontiers of Medicine 2021, Volume 15, Issue 3,   Pages 460-471 doi: 10.1007/s11684-021-0861-6

Abstract: Lifestyle interventions, including dietary adjustments and exercise, are important for obesity management. This study enrolled adults with overweight or obesity to explore whether either low-carbohydrate diet (LCD) or exercise is more effective in metabolism improvement. Forty-five eligible subjects were randomly divided into an LCD group (n=22) and an exercise group (EX, n=23). The subjects either adopted LCD (carbohydrate intake<50 g/day) or performed moderate-to-vigorous exercise (≥30 min/day) for 3 weeks. After the interventions, LCD led to a larger weight loss than EX (−3.56±0.37 kg vs. −1.24±0.39 kg, P<0.001), as well as a larger reduction in fat mass (−2.10±0.18 kg vs. −1.25±0.24 kg, P=0.007) and waist circumference (−5.25±0.52 cm vs. −3.45±0.38 cm, P=0.008). Both interventions reduced visceral and subcutaneous fat and improved liver steatosis and insulin resistance. Triglycerides decreased in both two groups, whereas low-density lipoprotein cholesterol increased in the LCD group but decreased in the EX group. Various glycemic parameters, including serum glycated albumin, mean sensor glucose, coefficient of variability (CV), and largest amplitude of glycemic excursions, substantially declined in the LCD group. Only CV slightly decreased after exercise. This pilot study suggested that the effects of LCD and exercise are similar in alleviating liver steatosis and insulin resistance. Compared with exercise, LCD might be more efficient for weight loss and glucose homeostasis in people with obesity.

Keywords： low-carbohydrate diet     obesity     nonalcoholic fatty liver disease     continuous glucose monitoring     mean sensor glucose    

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Recent progress in electric-field assisted combustion: a brief review

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 883-899 doi: 10.1007/s11708-021-0770-z

Abstract: Among the combustion technologies, electric-field assisted combustion is an advanced techno-logy thatIn the last two decades, tremendous efforts have been made to understand electric-field assisted combustionThese findings significantly facilitate the application of electric-field assisted combustion.

Keywords： electric field     combustion     flame stabilization     emission reduction     flame propagation    

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A MATLAB code for the material-field series-expansion topology optimization method

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 607-622 doi: 10.1007/s11465-021-0637-3

Abstract: This paper presents a MATLAB implementation of the material-field series-expansion (MFSE) topo-logy optimizationThe MFSE method uses a bounded material field with specified spatial correlation to represent the structuralWith the series-expansion method for bounded fields, this material field is described with the characteristic

Keywords： MATLAB implementation     topology optimization     material-field series-expansion method     bounded materialfield     dimensionality reduction    

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Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 158-164 doi: 10.1007/s11709-009-0002-9

Abstract: A field test was conducted to investigate the distribution of temperature field and the variation ofAccording to field tests, the thermal stress incurred by hydration heat may induce temperature cracks

Keywords： box-girder bridge     field test     hydration heat     temperature field     temperature gradient     thermal stress    

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Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0744-9

Abstract: Energy field-assisted machining technology has the potential to overcome the limitations of machiningThe introduction of advanced energy-field-assisted green processing technology can improve the machinabilityThe laser energy field, ultrasonic energy field, and cryogenic minimum quantity lubrication energy fieldsBy analyzing the effects of changing the energy field and cutting parameters on tool wear, chip morphologyFinally, the shortcomings and technical challenges of energy-field-assisted milling are summarized in

Keywords： difficult-to-machine metal material     green machining     high-speed dry milling     laser energy field-assistedmilling     ultrasonic energy field-assisted milling     cryogenic minimum quantity lubrication energy field-assisted    

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Temperature field simulation of laser homogenizing equipment

Juanjuan WANG, Yunshan WANG, Fudong ZHU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 49-52 doi: 10.1007/s11465-009-0005-1

Abstract: The scanning ring facula’s mathematic model is established based on the temperature field’s superposingdistribution and temperature distribution characteristics are achieved by simulating its temperature fieldBy studying the effect of parameters on the temperature field, the best parameter can be found.

Keywords： laser homogenizing technology     laser scanning ring facula     temperature field    

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Sulige Gas Field super project

Wenrui HU, Jingwei BAO, Pengcheng JI

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 379-384 doi: 10.15302/J-FEM-2017107

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A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 380-396 doi: 10.1007/s11709-018-0471-9

Abstract: In the recent years, the phase field method for simulating fracture problems has received considerableThe present work discusses the implementation of the phase field method for brittle fracture within the

Keywords： phase field method     FEniCS     brittle fracture     crack propagation     variational theory of fracture    

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Effects of exercise therapy on bone mineral density in early postmenopausal women: a controlled trial

Shilin DENG MD ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 323-329 doi: 10.1007/s11684-009-0061-2

Abstract: The purpose of this article is to determine the effect of a well-designed combined aerobic, resistance, and extension exercise program on bone mineral density (BMD) in postmenopausal women. The population comprised 45 postmenopausal women, who exercised over 12months (exercise group), and 36 women who served as a non-training control group. BMD of the hip, and lumbar spine was measured at the baseline and 12th month. Repeated measurement analysis of variance and nonparametric test were utilized to compare differences between the exercise group and controls. Thirty-six out of 45 persons in the exercise group and 36 controls completed the study. Average compliance was 82.2% for the whole exercise group at the 12th month. All the subjects had decreased BMD, but the rate of bone loss was lower in the exercise group than in the control group at the L4 and hip. Although the exercise program in this study may probably reduce the rate of bone loss in weight-bearing skeletal sites, we do not suggest the exercise by itself be viewed as prevention or treatment for osteoporosis. Further, the exact dose-response relationship of exercise and bone mass in early postmenopause is not clear.

Keywords： early postmenopausal women     bone mineral density     exercise     effects    

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Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 299-304 doi: 10.1007/s11709-009-0035-0

Abstract: The similarity law of centrifuge test was developed for the seepage field and stress field of a foundationFinally, a comparative study was conducted on the test results of the pit deformation and the field measurementresults show that the pit deformation regularity of the test is basically identical with that of the fieldmeasurement, and the difference in pit deformation between the test and the field measurement is within

Keywords： foundation pit with confined water     centrifuge model test     seepage-stress coupling field     similarity relation     field measurement     deformation    

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Title Author Date Type Operation

A tutorial on 5G and the progress in China

Shan-zhi CHEN, Shao-li KANG

Journal Article

Trial design of arch bridge of composite box section with steel web-concrete flange

Jiangang WEI, Qingwei HUANG, Baochun CHEN,

Journal Article

Balancing method without trial weights for rotor systems based on similitude scale model

Ruiduo YE, Liping WANG, Xiaojie HOU, Zhong LUO, Qingkai HAN

Journal Article

Development and clinical trial of a novel bioactive bone cement

LEONG John, LI Zhaoyang, LU William

Journal Article

A randomized, controlled, open label non-inferiority trial of intravenous ferric carboxymaltose versus

Journal Article

diets lead to greater weight loss and better glucose homeostasis than exercise: a randomized clinical trial

Journal Article

Recent progress in electric-field assisted combustion: a brief review

Journal Article

A MATLAB code for the material-field series-expansion topology optimization method

Journal Article

Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Journal Article

Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Journal Article

Temperature field simulation of laser homogenizing equipment

Juanjuan WANG, Yunshan WANG, Fudong ZHU

Journal Article

Sulige Gas Field super project

Wenrui HU, Jingwei BAO, Pengcheng JI

Journal Article

A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Journal Article

Effects of exercise therapy on bone mineral density in early postmenopausal women: a controlled trial

Shilin DENG MD ,

Journal Article

Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

Journal Article