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Impact of social Determinants of Health on self-Perceived Resilience: An Exploratory study of Two Cohorts of Adults with Congenital Heart Disease

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Congenital Heart Disease 2024年第1期19卷 33-48页

作者： Albert Osom krysta s.barton Katie sexton Lyndia Brumback Joyce P.Yi-Frazier Abby R.Rosenberg Ruth Engelberg Jill M.steiner Department of Biostatistics University of WashingtonSeattleWA98195USA Biostatistics Epidemiology and Analytics for Research(BEAR)Core Seattle Children’s Research InstituteSeattleWA98101USA College of Medicine University of WashingtonSeattleWA98195USA Center for Clinical and Translational Research Seattle Children’s Research InstituteSeattleWA98101USA Department of Psychosocial Oncology and Palliative Care Dana-Farber Cancer InstituteDepartment of MedicineBoston Children’s HospitalBostonMA02215USA Department of Pediatrics Harvard Medical SchoolBostonMA02215USA Division of Pulmonary Critical Care and Sleep MedicineDepartment of Medicine&Cambia Palliative Care Center of ExcellenceUniversity of WashingtonHarborview Medical CenterSeattleWA98104USA Division of Cardiology Department of Medicine&Cambia Palliative Care Center of ExcellenceUniversity of WashingtonSeattleWA98195USA

social determinants of health(sDOH)affect quality of *** investigated sDOH impacts on self-perceived resilience among people with adult congenital heart disease(ACHD).secondary analysis of data from two com-plementary studies:a survey study conducted May 2021–June 2022 and a qualitative study conducted June 2020–August *** was assessed through CD-RIsC10 score(range 0–40,higher scores reﬂect greater self-perceived resilience)and interview *** and sDOH(education,employment,living situa-tion,monetary stability,ﬁnancial dependency,area deprivation index)data were collected by healthcare record review and *** used linear regression with robust standard errors to analyze survey data and performed a thematic analysis of interview *** participants(N=127)mean age was 42±14 years;51%were female,87%*** was moderate(75%)or complex(25%);41%functional class C or ***(mean 30±7)varied by monetary stability:compared to people with difﬁculty paying bills,resilience was 15.0 points higher(95%CI:6.9–23.1,ps higher(95%CI:5.9–22.4,p=0.001)for those reporting just enough *** participants’(N=25)mean age was 32 years(range 22–44);52%were female,72%*** was moderate(56%)or complex(44%);76%functional class C or *** discussed factors affecting resilience aligned with each of the major sDOH,prominently,economic stability and healthcare access and *** stability may be important for supporting self-perceived resi-lience in *** knowledge can inform the development of resilience interventions for this population.

关键词： social determinants of health adult congenital heart disease resilience ﬁnancial stability

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Outcome of meniscal repairs in paediatric population:A tertiary centre experience

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World Journal of Orthopedics 2024年第6期15卷 547-553页

作者： Ayman Gabr samson Williams sophie Dodd Nick barton-Hanson Department of Trauma&Orthopaedics West Suffolk HospitalSuffolk IP332QZUnited Kingdom Department of Trauma and Orthopaedics Alder Hey Children's HospitalLiverpool L145ABUnited Kingdom

BACKGROUND Meniscal sparing surgery is a widely utilised treatment option for unstable meniscal tears with the aim of minimising the risk of progression towards ***,there is limited data in the literature on meniscal repair outcomes in skeletally immature *** To evaluate the re-operation rate and functional outcomes of meniscal repairs in children and *** We performed a retrospective review of all patients who underwent arthroscopic meniscal repair surgery between January 2007 and January *** patients were under the age of 18 at the time of *** were all performed by a single *** was gathered from our hospital Electronic Patient Records *** primary outcome measure was re-operation rate(need for further surgery on the same meniscus).secondary outcome measures were surgical complications and patient reported outcome measures that were International Knee Documentation Committee(IKDC),Tegner and Lysholm *** We identified 59 patients who underwent 66 All-inside meniscal repairs(32 medial meniscus and 34 Lateral meniscus).Meniscal repairs were performed utilizing FasT-Fix(smith and Nephew)*** were 37 males and 22 females with an average age of 14 years(range 6-16).The average follow-up time was 53 months(range 26-140).six patients had concomitant anterior cruciate ligament reconstruction surgery along with the meniscal *** were no requiring further meniscal repairs and 9 patients underwent partial *** mean postoperative IKDC score was 88(44-100),Tegner score was 7(2-10)and Lysholm score was 94(57-100).CONCLUsION Our results showed that arthroscopic repair of meniscal tears in the paediatric population is an effective treatment option that has a low failure rate and good postoperative clinical with the advantage of preserving meniscal tissues.

关键词： Meniscus Meniscal repair Outcome Meniscal preservation

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A Procedure for Trisecting an Acute Angle (Method 2)

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Advances in Pure Mathematics 2024年第4期14卷 204-213页

作者： Lyndon O. barton Department of Math and Physics Delaware State University Dover USA

This paper presents an alternate graphical procedure (Method 2), to that presented in earlier publications entitled, “A Procedure for Trisecting an Acute Angle” and “A Key to solving the Angle Trisection Problem”. The procedure, when applied to the 30˚ and 60˚ angles that have been “proven” to be nottrisectable and the 45˚ benchmark angle that is known to be trisectable, in each case produced a construction having an identical angular relationship with Archimedes’ Construction, as in section 2 on THEORY of this paper, where the required trisection angle was found to be one-third of its respective angle (i.e. DE’MA = 1/3 DE’CG). For example, the trisection angle for the 30˚, 45˚ and 60˚ angles were 10.00000˚, 15.00000˚, and 20.00000˚, respectively, and section 5 on PROOF in this paper. Therefore, based on this identical angular relationship and the numerical results (i.e. to five decimal places), which represent the highest degree of accuracy and precision attainable by The Geometer’s sketch Pad software, one can only conclude that not only the geometric requirements for arriving at an exact trisection of the 30˚ and 60˚ angle (which have been “proven” to be not-trisectable) have been met, but also, the construction is valid for any arbitrary acute angle, despite theoretical proofs to the contrary by Wantzel, Dudley, and others.

关键词： Archimedes’ Construction College Geometry College Mathematics Angle Trisection Famous Problems in Mathematics Mechanism Analysis Geometer’s sketch Pad

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Advances in joint roughness coefficient (JRC) and its engineering applications

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第12期15卷 3352-3379页

作者： Nick barton Changshuo Wang Rui Yong Nick barton&Associates Fjordveien 65cHavik Oslo1363Norway school of Civil Engineeing Shijiazhuang Tiedao UniversityShijiazhuang050043China Rock Mechuanics Institute Ningbo UniversityNingbo315211China

The joint roughness coefficient (JRC), introduced in barton (1973) represented a new method in rock mechanics and rock engineering to deal with problems related to joint roughness and shear strength estimation. It has the advantages of its simple form, easy estimation, and explicit consideration of scale effects, which make it the most widely accepted parameter for roughness quantification since it was proposed. As a result, JRC has attracted the attention of many scholars who have developed JRC-related methods in many areas, such as geological engineering, multidisciplinary geosciences, mining mineral processing, civil engineering, environmental engineering, and water resources. Because of such a developing trend, an overview of JRC is presented here to provide a clear perspective on the concepts, methods, applications, and trends related to its extensions. This review mainly introduces the origin and connotation of JRC, JRC-related roughness measurement, JRC estimation methods, JRC-based roughness characteristics investigation, JRC-based rock joint property description, JRC's influence on rock mass properties, and JRC-based rock engineering applications. Moreover, the representativeness of the joint samples and the determination of the sampling interval for rock joint roughness measurements are discussed. In the future, the existing JRC-related methods will likely be further improved and extended in rock engineering.

关键词： Joint roughness coefficient(JRC) Rock joints Roughness shear strength scale effect

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开发用于旋转定向系统的PDC钻头

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国外石油动态 2002年第1期 10-22页

作者： s.barton 刘敏

由于经济利益的驱动，大位移井和水平井的数量正日益增加，被公认为是定向钻井标准方法的可转向马达也并不是钻横向大位移井和水平井的理想方法，因此，人们开发出了旋转定向系统。该马达在造斜时具有同时进行连续旋转钻杆的优点，可使... 详细信息

由于经济利益的驱动，大位移井和水平井的数量正日益增加，被公认为是定向钻井标准方法的可转向马达也并不是钻横向大位移井和水平井的理想方法，因此，人们开发出了旋转定向系统。该马达在造斜时具有同时进行连续旋转钻杆的优点，可使井筒更平滑，井眼更清洁，同时也使阻力更小，从而可以改善钻压传递，提高机械钻速。

关键词：石油钻井旋转定向系统 POC钻头设计规范牙轮

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A Procedure for the squaring of a Circle (of Any Radius)

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Advances in Pure Mathematics 2023年第2期13卷 96-102页

作者： Lyndon O. barton Delaware state University Dover USA

This paper presents a graphical procedure for the squaring of a circle of any radius. This procedure, which is based on a novel application of the involute profile, when applied to a circle of arbitrary radius (using only an unmarked ruler and a compass), produced a square equal in area to the given circle, which is 50 cmsup>2sup>. This result was a clear demonstration that not only is the construction valid for the squaring of a circle of any radius, but it is also capable of achieving absolute results (independent of the number pi (π), in a finite number of steps), when carried out with precision.

关键词： Famous Problems in Mathematics Archimedes College Mathematics Involute Mean Proportional Principle squaring the Circle Quadrature Geometer’s sketch Pad College Geometry

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A Key to solving the Angle Trisection Problem

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Advances in Pure Mathematics 2023年第9期13卷 625-634页

作者： Lyndon O. barton Department of Math and Physics Delaware State University Dover USA

This paper describes the methodology (or approach) that was key to the solution of the angle trisection problem published earlier in article entitled, “A Procedure For Trisecting An Acute Angle.” It was an approach that required first, designing a working model of a trisector mechanism, second, studying the motion of key elements of the mechanism and third, applying the fundamental principles of kinematics to arrive at the desired results. In presenting these results, since there was no requirement to provide a detailed analysis of the final construction, this information was not included. However, now that the publication is out, it is considered appropriate as well as instructive to explain more fully the mechanism analysis of the trisector in graphical detail, as covered in section 3 of this paper, that formed the basis of the long sought solution to the age-old Angle Trisection Problem.

关键词： Archimedes’ Construction College Geometry College Mathematics Angle Trisection Trisector Famous Problems in Mathematics History of Mathematics Mechanism Analysis Kinematics Geometer’s sketch Pad

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A simplified Graphical Procedure for Constructing a 10˚or 20˚Angle

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Advances in Pure Mathematics 2023年第7期13卷 442-448页

作者： Lyndon O. barton Delaware state University Dover USA

This paper presents a simplified graphical procedure for constructing, using an unmarked straightedge and a compass only, a 10˚ to 20˚ angle, which is in other words, trisecting a 30˚ or 60˚ angle. The procedure, when applied to the 30˚ and 60˚ angles that have been “proven” to be not trisectable, produced a construction having the identical angular relationship with Archimedes’ Construction, in which the required trisection angles were found to be 10.00000˚ and 20.00000˚ respectively (i.e. exactly one-third of the given angle or ∠E’MA = 1/3∠E’CG). Based on this identical angular relationship as well as the numerical results obtained, one can only conclude that the geometric requirements for arriving at an exact trisection of the 30˚ or 60˚ angle, and therefore the construction of a 10˚ or 20˚ angle, have been met, notwithstanding the theoretical proofs of Wantzel, Dudley, and others. Thus, the solution to the age-old trisection problem, with respect to these two angles, has been accomplished.

关键词： Archimedes’ Construction College Geometry Angle Trisection Trisection of an Angle Famous Problems in Mathematics. Geometer’s sketch Pad Mechanisms Mechanism Analysis Kinematics Trisector

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Risk of shear failure and extensional failure around over-stressed excavations in brittle rock

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第2期9卷 210-225页

作者： Nick barton Baotang shen Nick barton&Associates OsloNorway CsIRO Energy BrisbaneAustralia

The authors investigate the failure modes surrounding over-stressed tunnels in *** lines of investigation are employed:failure in over-stressed three-dimensional(3D) models of tunnels bored under 3D stress,failure modes in two-dimensional(2D) numerical simulations of 1000 m and 2000 m deep tunnels using FRACOD,both in intact rock and in rock masses with one or two joint sets,and finally,observations in TBM(tunnel boring machine) tunnels in hard and medium hard massive *** reason for 'stress-induced' failure to initiate,when the assumed maximum tangential stress is approximately(0.4-0.5)σ_c(UCs,uniaxial compressive strength) in massive rock,is now known to be due to exceedance of a critical extensional strain which is generated by a Poisson's ratio ***,because similar 'stress/strength' failure limits are found in mining,nuclear waste research excavations,and deep road tunnels in Norway,one is easily misled into thinking of compressive stress induced *** of this,the empirical sRF(stress reduction factor in the Q-system) is set to accelerate as the estimated ratio σ_(θmax)/σ_c >> *** mining,similar 'stress/strength' ratios are used to suggest depth of *** reality behind the fracture initiation stress/strength ratio of '0.4' is actually because of combinations of familiar tensile and compressive strength ratios(such as 10) with Poisson's ratio(say0.25).We exceed the extensional strain limits and start to see acoustic emission(AE) when tangential stress σθ ≈ 0.4σc,due to simple *** combination of 2D theoretical FRACOD models and actual tunnelling suggests frequent initiation of failure by 'stable' extensional strain fracturing,but propagation in 'unstable' and therefore dynamic *** the case of very deep tunnels(and 3D physical simulations),compressive stresses may be too high for extensional strain fracturing,and shearing will dominate,both ahead of the face and following the *** shallower,the conc

关键词： Fracture propagation Tension shear Poisson’s ratio Break-out Rock burst Deep tunnels FRACOD model

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A Method for the squaring of a Circle

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Advances in Pure Mathematics 2022年第9期12卷 535-540页

作者： Lyndon O. barton Delaware state University Dover USA

This paper presents a Method for the squaring of a circle (i.e., constructing a square having an area equal to that of a given circle). The construction, when applied to a given circle having an area of 12.7 cmsup>2sup>, it produced a square having an area of 12.7 cmsup>2sup>, using only an unmarked ruler and a compass. This result was a clear demonstration that not only is the construction valid for the squaring of a circle but also for achieving absolute results (independent of the number pi (π) and in a finite number of steps) when carried out with precision.

关键词： Famous Problems in Mathematics Archimedes College Mathematics Cycloidal Construction Mean Proportional Principle squaring the Circle Quadrature Geometer’s sketch Pad College Geometry

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