Graph Theory and Matrix Approach (GTMA) Model for the Selection of the Femoral-Component of Total Knee Joint Replacement

Total Knee Replacement (TKR) is the increasing trend now a day, in revision surgery which is associated with aseptic loosening, which is a challenging research for the TKR component. The selection of optimal material loosening can be controlled at some limits. This paper is going to consider the best material selected among a number of alternative materials for the femoral component (FC) by using Graph Theory. Here GTMA process used for optimization of material and a systematic technique introduced through sensitivity analysis to find out the more reliable result. Obtained ranking suggests the use of optimized material over the other existing material. By following GTMA Co_Cr-alloys (wrought-Co-Ni-CrMo) and Co_Cr-alloys (cast-able-Co-Cr-Mo)are on the 1st and 2nd position respectively.

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Constructing tensegrity structures from one-bar elementary cells

Proceedings of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rspa.2009.0260 ◽

2009 ◽

Vol 466 (2113) ◽

pp. 45-61 ◽

Cited By ~ 30

Author(s):

Yue Li ◽

Xi-Qiao Feng ◽

Yan-Ping Cao ◽

Huajian Gao

Keyword(s):

Graph Theory ◽

Design Strategy ◽

The Other ◽

Cubic Graph ◽

Tensegrity Structures ◽

Tensegrity Structure ◽

Elementary Module ◽

Shaped Cell ◽

Selection Of

This study aimed to develop a method to construct tensegrity structures from elementary cells, defined as structures consisting of only one bar connected with a few strings. Comparison of various elementary cells leads to the further selection of the so-called ‘Z-shaped’ cell, which contains one bar and three interconnected strings, as the elementary module to assemble the Z-based spatial tensegrity structures. The graph theory is utilized to analyse the topology of strings required to construct this type of tensegrity structures. It is shown that ‘a string net can be used to construct a Z-based tensegrity structure if and only if its topology is a simple and bridgeless cubic graph’. Once the topology of strings has been determined, one can easily design the associated tensegrity structure by adding a deterministic number of bars. Two schemes are suggested for this design strategy. One is to enumerate all possible topologies of Z-based tensegrity for a specified number of bars or cells, and the other is to determine the tensegrity structure from a vertex-truncated polyhedron. The method developed in this paper allows us to construct various types of novel tensegrity structures.

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ANALISIS FAKTOR-FAKTOR YANG BERPENGARUH PADA PEMILIHAN METODE DEPRESIASI

Media Riset Akuntansi Auditing & Informasi ◽

10.25105/mraai.v4i2.1862 ◽

2017 ◽

Vol 4 (2) ◽

pp. 173

Author(s):

Rossje V. Suryaputri ◽

Kerna la Wardhany

Keyword(s):

Firm Size ◽

The Other ◽

Small Company ◽

Font Size ◽

Leverage Ratio ◽

Positive Correlation ◽

Straight Line ◽

Increasing Trend ◽

Selection Of ◽

Depreciation Methods

The main objective ofthis study is to obtain evidence whether manager choices to depreciation methods, is related and affected by firm's size, leverage ratio, and account-ing ROA. It' is assumed that manager in the small company with high leverage ratio, and decreasing trend of accounting ROA preferred to select depreciation method which can increase the reported earning by using the straight-line depreciation method. On the contrary, manager in the larger company with low leverage ratio and increasing trend of accounting ROA tend to select depreciation method which can reduce the repotted earning by using double declining balance or accebrated depreciation method.This study was conducted byselecting of 129 publiclisted manufacturing compa-nies. The firm's size was detennined by total assets, while leverage ratio and accounting ROA were measured by the ratio of total liabilities to total assets and ratio of operating pinfit to average of total assets. The study concludes that there was a positive correlation between leverage ratio and the choice of depreciation method. On the contrary, there was no correlation between the firm's size and accounting ROA with the choice of depreciation method. There was an effect of leverage ratio to the selection of depreciation method. On the other hand, there was no effect between the firm's size and accounting ROA to the selection of depreciation methodKeywords: Depreciation method, firm size, leverage, ROA

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Method for selection of femoral component in total knee arthroplasty (tka)

Australasian Physical & Engineering Sciences in Medicine ◽

10.1007/s13246-011-0053-9 ◽

2011 ◽

Vol 34 (1) ◽

pp. 23-30 ◽

Cited By ~ 6

Author(s):

Dawie van den Heever ◽

Cornie Scheffer ◽

Pieter Erasmus ◽

Edwin Dillon

Keyword(s):

Total Knee Arthroplasty ◽

Femoral Component ◽

Knee Arthroplasty ◽

Total Knee ◽

Selection Of

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Note on Selection of Coordinate Systems for Geodynamics

International Astronomical Union Colloquium ◽

10.1017/s0252921100051174 ◽

1975 ◽

Vol 26 ◽

pp. 395-407

Author(s):

S. Henriksen

Keyword(s):

Sea Level ◽

The Other ◽

Coordinate Systems ◽

Mean Sea Level ◽

The Earth ◽

The One ◽

Static Systems ◽

Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

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Trends in Periprosthetic Knee Infection and Associated Costs: A Population-Based Study Using National Data

The Journal of Knee Surgery ◽

10.1055/s-0040-1701516 ◽

2020 ◽

Author(s):

Robert Brochin ◽

Jashvant Poeran ◽

Khushdeep S. Vig ◽

Aakash Keswani ◽

Nicole Zubizarreta ◽

...

Keyword(s):

Total Knee Arthroplasty ◽

Length Of Stay ◽

Knee Arthroplasty ◽

Trend Test ◽

Strong Impact ◽

Hospitalization Costs ◽

Teaching Status ◽

Increasing Trend ◽

Total Knee ◽

Increasing Trends

AbstractGiven increasing demand for primary knee arthroplasties, revision surgery is also expected to increase, with periprosthetic joint infection (PJI) a main driver of costs. Recent data on national trends is lacking. We aimed to assess trends in PJI in total knee arthroplasty revisions and hospitalization costs. From the National Inpatient Sample (2003–2016), we extracted data on total knee arthroplasty revisions (n = 782,449). We assessed trends in PJI prevalence and (inflation-adjusted) hospitalization costs (total as well as per-day costs) for all revisions and stratified by hospital teaching status (rural/urban by teaching status), hospital bed size (≤299, 300–499, and ≥500 beds), and hospital region (Northeast, Midwest, South, and West). The Cochran–Armitage trend test (PJI prevalence) and linear regression determined significance of trends. PJI prevalence overall was 25.5% (n = 199,818) with a minor increasing trend: 25.3% (n = 7,828) in 2003 to 28.9% (n = 19,275) in 2016; p < 0.0001. Median total hospitalization costs for PJI decreased slightly ($23,247 in 2003–$20,273 in 2016; p < 0.0001) while median per-day costs slightly increased ($3,452 in 2003–$3,727 in 2016; p < 0.0001), likely as a function of decreasing length of stay. With small differences between hospitals, the lowest and highest PJI prevalences were seen in small (≤299 beds; 22.9%) and urban teaching hospitals (27.3%), respectively. In stratification analyses, an increasing trend in PJI prevalence was particularly seen in larger (≥500 beds) hospitals (24.4% in 2003–30.7% in 2016; p < 0.0001), while a decreasing trend was seen in small-sized hospitals. Overall, PJI in knee arthroplasty revisions appears to be slightly increasing. Moreover, increasing trends in large hospitals and decreasing trends in small-sized hospitals suggest a shift in patients from small to large volume hospitals. Decreasing trends in total costs, alongside increasing trends in per-day costs, suggest a strong impact of length of stay trends and a more efficient approach to PJI over the years (in terms of shorter length of stay).

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Isolated Liner Revision for Total Knee Arthroplasty Instability: A Road That Should Remain Less Taken

The Journal of Knee Surgery ◽

10.1055/s-0040-1721091 ◽

2020 ◽

Author(s):

Jason D. Tegethoff ◽

Rafael Walker-Santiago ◽

William M. Ralston ◽

James A. Keeney

Keyword(s):

Total Knee Arthroplasty ◽

Femoral Component ◽

Knee Arthroplasty ◽

Primary Total Knee Arthroplasty ◽

P Value ◽

Surgical Morbidity ◽

Exact Test ◽

Total Knee ◽

Component Revision

AbstractIsolated polyethylene liner exchange (IPLE) is infrequently selected as a treatment approach for patients with primary total knee arthroplasty (TKA) prosthetic joint instability. Potential advantages of less immediate surgical morbidity, faster recovery, and lower procedural cost need to be measured against reoperation and re-revision risk. Few published studies have directly compared IPLE with combined tibial and femoral component revision to treat patients with primary TKA instability. After obtaining institutional review board (IRB) approval, we performed a retrospective comparison of 20 patients treated with IPLE and 126 patients treated with tibial and femoral component revisions at a single institution between 2011 and 2018. Patient demographic characteristics, medical comorbidities, time to initial revision TKA, and reoperation (90 days, <2 years, and >2 years) were assessed using paired Student's t-test or Fisher's exact test with a p-value <0.01 used to determine significance. Patients undergoing IPLE were more likely to undergo reoperation (60.0 vs. 17.5%, p = 0.001), component revision surgery (45.0 vs. 8.7%, p = 0.002), and component revision within 2 years (30.0 vs. 1.6%, p < 0.0001). Differences in 90-day reoperation (p = 0.14) and revision >2 years (p = 0.19) were not significant. Reoperation for instability (30.0 vs. 4.0%, p < 0.001) and infection (20.0 vs. 1.6%, p < 0.01) were both higher in the IPLE group. IPLE does not provide consistent benefits for patients undergoing TKA revision for instability. Considerations for lower immediate postoperative morbidity and cost need to be carefully measured against long-term consequences of reoperation, delayed component revision, and increased long-term costs of multiple surgical procedures. This is a level III, case–control study.

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INTERFERENSI GRAMATIKAL DALAM KUMPULAN CERPEN BIARKAN AKU MEMULAI KARYA NURUL F. HUDA

Jurnal Disastri (Jurnal Pendidikan Bahasa dan Sastra Indonesia) ◽

10.33752/disastri.v1i01.478 ◽

2019 ◽

Vol 1 (01) ◽

pp. 16-23

Author(s):

Zimmatul Liviana

Keyword(s):

Short Stories ◽

Data Collection ◽

Qualitative Method ◽

Language Variation ◽

The Other ◽

Qualitative Descriptive ◽

Ofthe Object ◽

Selection Of ◽

Descriptive Qualitative

The research grammatical interference in a collection ofshort stories Biarkan Aku Memula iwork Nurul F. Hudaisa collection ofshort storiesset in the back that Is start work Let Nurul F. Huda contains many grammatical interference.The problem of this study were(1)how the various morphologi calinterference containedin a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. (2)how the various syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. The purposeof this studyis to describe the morphological and Syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. Sociolinguistics is the study of language variation and use in society. Interference is the event of the use of language elements of one into the other language elements that occur in the speakers themselves. This research uses descriptive qualitative method because to describe the actual realityin order to obtainan accurateand objective. Qualitative descriptive methods were used to analyzethe elements ofa word orphrase that incorporated elements of other languages with the analysis and description of the formulation of the problem is the answer. Data collection techniques using observation techniques, the determination ofthe object of research, the selection of short stories.Based on the analysis of the data in this study can be found that there are six forms of interference morphology, namely (1) the prefix nasal N-sound, (2) the addition of the suffix, (3) the exchange prefix, (4) exchange suffixes, (5) exchange konfiks, (6) removal affixes. While the syntactic interference only on the words and phrases in a sentence. The results of the study it can be concluded that the interference morphology more common than syntactic interference.

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Arthroscopy in Arthrosis: Is It Worth it? A case Presentation

Revista de Chimie ◽

10.37358/rc.18.8.6506 ◽

2018 ◽

Vol 69 (8) ◽

pp. 2232-2235

Author(s):

Marius Moga ◽

Mark Edward Pogarasteanu ◽

Antoine Edu

Keyword(s):

Clinical Status ◽

Loose Body ◽

Point Of View ◽

The Other ◽

Joint Range Of Motion ◽

Objective Evidence ◽

Before And After ◽

Total Knee ◽

Joint Range

The role of arthroscopy in incipient and mild arthrosis, even combined with proximal tibial ostetomy, is well known and well documented. On the other hand, its role in the treatment of advanced arthrosis of the large joints, especially the knee, is a subject of controversy. The proponents of the use of arthroscopy in advanced arthrosis claim that meniscectomy, synovectomy, ostophytectomy, chondral lesion stabilization, arthroscopic release, plica and loose body removal greatly improve the quality of life for most patients, especially if followed by the use of viscoelastic injection, by diminishing pain and improving joint range of motion. The opponents claim that, even though the advantages are clear in the cases that refuse arthroplasty, in all the other cases the surgical indication should be total knee arthroplasty, as the clinical relief is temporary, but with all the risks of a surgical intervention. We have conducted an overview of the recent literature, in order to find objective evidence to sustain either point of view. We focused on articles published that included an objective measurement of before and after clinical status through clinical scores and objective measurements. We also focused on the follow-up period and on the evolution of the pathology after arthroscopy.

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The Propaganda Feedback Loop

10.1093/oso/9780190923624.003.0003 ◽

2018 ◽

Author(s):

Yochai Benkler ◽

Robert Faris ◽

Hal Roberts

Keyword(s):

Case Studies ◽

Feedback Loop ◽

The Other ◽

Hillary Clinton ◽

Donald Trump ◽

The Public ◽

False Reporting ◽

Media Ecosystem ◽

Crowd Out ◽

Selection Of

This chapter presents a model of the interaction of media outlets, politicians, and the public with an emphasis on the tension between truth-seeking and narratives that confirm partisan identities. This model is used to describe the emergence and mechanics of an insular media ecosystem and how two fundamentally different media ecosystems can coexist. In one, false narratives that reinforce partisan identity not only flourish, but crowd-out true narratives even when these are presented by leading insiders. In the other, false narratives are tested, confronted, and contained by diverse outlets and actors operating in a truth-oriented norms dynamic. Two case studies are analyzed: the first focuses on false reporting on a selection of television networks; the second looks at parallel but politically divergent false rumors—an allegation that Donald Trump raped a 13-yearold and allegations tying Hillary Clinton to pedophilia—and tracks the amplification and resistance these stories faced.

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Design Concepts for NiTiNOL Wires to Function as a Sensor

Transactions of the Indian National Academy of Engineering ◽

10.1007/s41403-021-00200-7 ◽

2021 ◽

Author(s):

D. Josephine Selvarani Ruth

Keyword(s):

Shape Memory Alloy ◽

Electrical Resistance ◽

Nickel Titanium ◽

The Other ◽

Sensing Element ◽

Proper Selection ◽

Design Concepts ◽

Mechanical Element ◽

Selection Of ◽

Inverse Hysteresis

AbstractNickel Titanium Naval Ordinance Laboratory (NiTiNOL) is widely called as a shape memory alloy (SMA), a class of nonlinear smart material inherited with the functionally programmed property of varying electrical resistance during the transformation enabling to be positioned as a sensing element. The major challenge to instrument the SMA wires is to suppress the wires’ nonlinearity by proper selection of two important factors. The first factor is influenced by the mechanical biasing element and the other is to identify the sensing current for the sensing device (SMA wires + biasing). This paper focuses on developing SMA wires for sensing in different orientation types and configurations by removing the non-linearity in the system’s output by introducing inverse hysteresis to the wires through the passive mechanical element.

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