bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengembangan Sistem Informasi Sewa Mobil Mini Bus Rute Makassar - Bone Berbasis Android
Authors: Restu Indra - 
Published: December 2022

Penelitian ini bertujuan untuk menghasilkan sisteminformasi pelayanan sewa mobil rute Makassar-Bone dan untuk mengetahui tanggapan pengguna terhadap sistem informasi sewa mobil ini. Jenis penelitian yang digunakan adalah Research and Development dan menggunakan model pengembangan yaitu model Prototyping. Uji kelayakan perangkat lunak berdasar ISO 9126, yakni karakteristik functionality,usability,portability,Maintainability,efficiency.Hasil penelitian ini adalah sebuah sistempelayanan sewa mobil mini bus rute Makassar-Bone berbasis android yang merupakan sebuah sistem informasi mengenai daftar mobil sewa yang ada di Kota Makassar dan Kabupaten Bone untuk mempermudah pengguna dalam hal ini pemesanan mobil sewa tanpa ke lokasi mobil sewa tersebut dan driver dapat mengelola pesanan secara akurat. Sistem informasi ini bersifat online. Pengujian perangkat lunak ISO 9126 dengan empat aspek yaitu functionality dengan presentase penilaian 100% dengan kategori kelayakan dapat diterima, aspek usability dari 20 responden 95% menunjukan interpretasi sangat baik, portability dengan presentase kelayakan 100% dari 3 pengujian di versi android berbeda dan telah memenuhi aspek portability, dan Maintainability telah memenuhi standar Maintainability.
RANCANG BANGUN APLIKASI KRIPTOGRAFI UNTUK PENGAMANAN CITRA RGB 24 BIT MENGGUNAKAN ALGORITMA ELGAMAL
Authors: Hendrawaty Hendrawaty , Toni Toni , Azhar Azhar 
Published: December 2022

Dengan berkembangnya teknologi informasi secara signifikan, keamanan data merupakan aspek penting dalam sistem teknologi informasi. Terutama didalam mengamankan distribusi dokumen dalam suatu jaringan komputer. Citra digital merupakan dokumen berbasis gambar yang sering tidak dipedulikan dampak negatifnya bila dimanfaatkan oleh orang yang tidak bertanggung jawab. Banyak terjadi manipulasi gambar dengan bentuk yang tidak berkenan dan pemilik gambar aslinya merasa dirugikan karena gambar yang telah dimanipulasi telah menunjukkan gambar yang buruk baginya. Untuk itu dibutuhkan suatu sistem yang bisa memberikan solusi untuk masalah tersebut. Pada penelitian ini akan dibahas suatu sistem kriptografi untuk mengamankan data citra menggunakan algoritma ElGamal. Citra yang dienkripsi yaitu citra RGB 24 bit dengan format JPG/JPEG. Hasil dari sistem ini adalah citra RGB 24 bit yang tidak dapat dikenali lagi (sudah teracak) dari citra aslinya. Dengan adanya sistem ini dapat mengamankan data gambar dari pihak-pihak yang tidak berkepentingan, sehingga hanya pihak-pihak tertentu saja yang dapat melihat bentuk asli dari gambar yang disimpan atau yang didistribusikan.
Penerapan Machine Learning Pada Mikrokontroler Arduino Mega PRO MINI ATmega2560-16AU
Authors: Wahyudi Wahyudi , Purnamasari S Wulan , Hidayat Akmal , Fakhri M. Miftach 
Published: December 2022

AbstrakPerkembangan Teknologi Informasi dan Komunikasi (TIK) telah mempengaruhi semua aspek yang ada, seperti aspek ekonomi, budaya, politik, sosial, pertahanan keamanan, pekerjaan rumah tangga bahkan dunia pendidikan sekalipun. Perkembangan tersebut banyak berkembang di era industri 4.0 saat ini mulai dari Internet of Things (IoT), Big Data, Argumented Reality, Cyber Security, Artifical Intelegence, Addictive Manufacturing, Simulation, System Integeration dan Cloud Computing. Salah satu perkembangan teknologi yang sangat berkembang saat ini yaitu machine learning atau pembelajaran mesin. Pada penelitian ini berfokus pada metode algoritma K-NN dan sensor warna TCS3200. Pada penelitian yang dilakukan oleh penulis ini menggunaka sensor warna TCS3200 dan Arduino mega 2560 pro mini sebagai perangkat keras yang digunakan. Penelitian ini bertujuan mendeskripsikan penerapan machine learning pada mikrokontroler arduino mega pro mini ATmega2560. Penelitian ini menggunakan metode studi pustaka atau library research dengan berbagai teknik pengumpulan data, selanjutnya melakukan pengujian untuk mengetahui kinerja sistem. Setelah dilakukan pengujian dilakukan analisa untuk mendapatkan kesimpulan akhir dari proses penelitian. setelah dilakukan pengujian sebanyak 20 kali dengan menempelkan pada objek, sistem ini bisa menginisialisasi warna dengan tepat. Dari hasil pengujian algoritma KNN dihasilkan akurasi tertinggi terdapat pada K=5, dimana nilai akurasi yang didapatkan adalah 80%. Sedangkan akurasi terendah terdapat pada k=9, dimana nilai akurasi yang didapatkan hanya 10%.Kata kunci : machine learning, algoritma KNN, arduino mega pro mini 2560
Pengembangan Weather Station Online Berbasis Android dengan Menggunakan Database Firebase
Authors: Gunawan Zain Satria , Darma Andayani Dyah , Prasetyo Eko , Ramdhany Edy Marwan 
Published: December 2022

The weather station app provides weather information to users in realtime from the database. After the development of the application, further testing is carried out to assess the quality of the application based on ISO 25010. Based on the results of the study, an application was generated that can be used in monitoring cauca changes in real time. Based on the test results using the ISO 25010 standard, the weather station application has met the standards where: a). Testing aspects of fungtional suitability using the black box testing method, which is carried out by two system experts where the test results are worth 1 with a very decent category, b). compatibility aspect testing using co-existence and no errors were found during testing, c). Testing aspects of performance efficiency is carried out using an application called AppTim and the test results are in the good category, d). Portability aspect testing is carried out by testingtheapplication, on devices with different androids, and from the test results no errors and errors were found in the application, so the application was declared suitable for use based on the results of ISO25010 testing.
Rancang Bangun Aplikasi Absensi Menggunakan Fitur Global Positioning System Berbasis Website PT. Bandar Udara Internasional Jawa Barat
Authors: Komalasari Imas , Nurdiana Nunu , Rusnandi Enang 
Published: December 2022

Berdasarkan penelitian yang telah dilakukan pada PT. Bandar Udara Internasional Jawa Barat (PT. BIJB) diperoleh masalah bahwa sistem absensi yang diterapkan saat ini masih menggunakan sistem finger print yang mana masih terdapat beberapa kendala, diantaranya sering terjadi antian yang panjang apabila pegawai datang secara bersamaan dalam satu waktu tertentu sehingga proses absensi menjadi lebih lama, rawan terhadap penyusupan penggunaan jari palsu, rentan terhadap kerusakan, dan juga sistem fingerprint akan berjalan lambat apabila dipakai dalam jangka waktu yang panjang karena sensor yang berfungsi untuk mendeteksi karakteristik pegawai akan mengalami penyusutan pemakaian seiring berjalannya waktu. Metode yang digunakan pada penelitian ini adalah metode Rational Unified Process (RUP) yaitu suatu metode rekayasa perangkat lunak yang menggunakan konsep object oriented dengan model pengembangan Unified Modeling Language (UML), terdapat empat tahapan dalam penggunaannya yaitu inception, elaboration, construction, dan transition. Hasil dari penelitian ini yaitu sebuah sistem aplikasi absensi menggunakan fitur global positioning system (GPS) berbasis website, yang mana input absensi ini hanya bisa dilakukan di area PT. BIJB saja sehingga mengurangi tingkat kecurangan dalam input absensi, dapat mempermudah pegawai dalam melakukan absensi karena dapat diakses menggunakan ponsel yang karyawan miliki, dan membantu Human Resources Departement (HRD) dalam merekap data absensi di PT. Bandar Udara Internasional Jawa Barat (Perseroda).
Accuracy Evaluation of Image-Based Virtual Fixtures in Robotic Laminectomy
Authors: Vossel Manuel , Theisgen Lukas , Radermacher Klaus , de la Fuente Matías 
Published: December 2022

The accuracy of image-based computer assisted orthopedic surgery highly depends on the accuracy of the registration step as well as image acquisition, planning and tool calibration. In this paper the accuracy of those steps is evaluated exemplarily for a robotic laminectomy.A high-resolution test bench was designed to compare the actual location of an object and the position to which the robotic system guides the surgical tool according to the image-based plan.Depending on the distance between the patient reference array and the tool array, average accuracies from 0.14 mm ± 0.17 mm to 0.42 mm ± 0.15 mm with a maximum error of 0.59 mm were measured.This very high accuracy is in the range of the thickness of the spinal dura mater.
Does your approach matter ?
Authors: Lebleu Julien , Winandy Charles-Eric , Pauwels Andries , Kordas Geza , van Lysebettens Wouter , Van Overschelde Philippe 
Published: December 2022

There is controversy regarding the effect of different approaches on recovery after THR. Collecting detailed relevant data with satisfactory compliance is difficult.Our retrospective observational multi-center study aimed to find out if the data collected via a remote coaching app can be used to monitor the speed of recovery after THR using the anterolateral (ALA), posterior (PA) and the direct anterior approach (DAA).771 patients undergoing THR from 13 centers using the moveUP platform were identified. 239 had ALA, 345 DAA and 42 PA. There was no significant difference between the groups in the sex of patients or in preoperative HOOS Scores. There was however a significantly lower age in the DAA (64,1y) compared to ALA (66,9y), and a significantly lower Oxford Hip Score in the DAA (23,9) compared to PA (27,7). Step count measured by an activity tracker, pain killer and NSAID use was monitored via the app. We recorded when patients started driving following surgery, stopped using crutches, and their HOOS and Oxford hip scores at 6 weeks.Overall compliance with data request was 80%. Patients achieved their preoperative activity level after 25.8, 17,7 and 23.3 days, started driving a car after 33.6, 30.3 and 31.7 days, stopped painkillers after 27.5, 20.2 and 22.5 days, NSAID after 30.3, 25.7, and 24.7 days for ALA, DAA and PA respectively. Painkillers were stopped and preoperative activity levels were achieved significantly earlier favoring DAA over ALA. Similarly, crutches were abandoned significantly earlier (39.9, 29.7 and 24.4 days for ALA, DAA and PA respectively) favoring DAA and PA over ALA. HOOS scores and Oxford Hip scores improved significantly in all 3 groups at 6 weeks, without any statistically significant difference between groups in either Oxford Hip or HOOS subscores.No final conclusion can be drawn as to the superiority of either approach in this study but the remote coaching platform allowed the collection of detailed data which can be used to advise patients individually, manage expectations, improve outcomes and identify areas for further research.
Automatic method for computing radiographic parameters of radial metaphyseal fractures in radiographs for surgical decision support
Authors: Suna Avigail , Davidson Amit , Joskowicz Leo , Weil Yoram 
Published: December 2022

PurposeDistal radius fractures (DRF) are common types of fractures with a high incident rate. DRF can be treated either by cast or surgery. To determine the clinical procedure and the operative management, standardized guidelines have become increasingly common. As operative indications are controversial, radiographic parameters (RPs) can provide objective support for effective decision making. Calculating the RPs manually from radiographs is time consuming and subject to observer variability and clinician experience. Our aim was to develop an automatic method for accurately and reliably computing 10 RPs associated with DRF in anteroposterior (AP) and lateral radiographs of a fractured hand with and without cast.MethodsThe inputs are the AP and lateral radiographs of the fractured hand with or without cast. The outputs are 10 RP values and composite images showing the landmark points and axes used in the RPs computation on the radiographs. Our method comprises three main steps: 1) segmentation of the radius and the ulna with a deep learning radiograph pixel classifier; 2) landmark points and axis extraction from the segmentations using geometric model-based methods; 3) RPs computation from the landmarks and generation of composite images. Our study tested the accuracy of step 2.The dataset consists of 20 pairs of AP and lateral radiographs. Ground truth radius and ulna segmentations were manually performed by an expert clinician co-author. Ground truth landmarks were manually located and annotated by the two expert clinician co-authors. The computed RP was considered accurate (in range) when its value was inside the inter and intra observer variability range of the manual annotation. The overall accuracy of the AP and lateral measurements was obtained by averaging the accuracy of each RP.ResultsThe accuracy of the computed AP RPs is 92.7%. The Radial Length and Radial Shift are within the observer variability range; for the Radial Angle, Ulnar Variance and Step all cases are within range except for one outlier; the Gap has two outlier cases. The accuracy of the computed lateral RPs is 100%: all four Palmer Tilt, Dorsal Shift, Gap, and Step are within the clinician observer variability.ConclusionAutomatic computation of distal radius fractures RPs from AP and lateral radiographs of hands with and without cast can be performed accurately. Precise and consistent measurement of RPs may improve the clinical decision making process.
Kinematics and Early Clinical Outcomes of Navigated Total Knee Arthroplasty through a Lateral Subvastus Approach
Authors: Vanderschelden Yves , Grassi Alberto , Bignozzi Simone , Asmonti Irene , Zaffagnini Stefano 
Published: December 2022

A procedure with subvastus lateral approach has been utilized routinely on 60 patients, navigation was used due to the reduced exposure of this technique. Purpose of this study was to evaluate pain, function, and implant kinematics at early follow up of this surgical technique.Tibial and femoral implant planning was based on ligament balance, gaps, and intraoperative kinematics. This approach, on pain and function, was verified at early follow- up. KSS and pain score were obtained at pre-op, 1, 3, 12 months. Data were analyzed with ANOVA for KSS and Chi-square for Pain.No intraoperative complications were registered, no patellar tendon lesion or avulsion was noted. Preoperative average leg alignment was 4±6° varus (range 16; -14), corrected to 0° (range 2; -1). Kinematic analysis showed rollback on lateral compartment, while on medial compartment rollback was lower or negligible until 70° of flexion. Less than 5% had a “Fair” or “Poor” KSS score after 3 months. Preop pain was: 41% severe; 50% moderate; 8% mild and 0% none. At 1 month pain was: 2% severe; 18% moderate; 55% mild and 25% none. After 3 months 50% of patients had mild and 50% had no pain. This data was maintained after 1 year, with 31% of patients with mild and 69% of patients no pain (p&lt;0.05).This approach produced promising early outcomes in terms of pain, ROM and knee function, with less than 5% of patients presenting sub-optimal clinical results at 3- months. On symmetrical implant, medial pivot behavior was observed. Medial ligamental envelope preservation and navigated ligament balancing allow to optimize the medial stability and minimize the post-operative pain.
Over Constraint Varus Valgus Laxity Leads to Worse Clinical Outcomes at Long Term Follow Up in Total Knee Arthroplasty: Intraoperative Assessment through Surgical Navigation System
Authors: Di Paolo Stefano , Fratini Stefano , Meena Amit , Bignozzi Simone , Marcheggiani Muccioli Giulio Maria , Zaffagnini Stefano 
Published: December 2022

The purpose of the present study was to associate the intraoperative kinematics acquired with a computer navigation system with long-term clinical outcomes and survivorship in patients undergoing TKA to investigate the role of constraint in patients’ satisfaction.A surgical navigation system was used to verify bone resections, gaps, and implant positioning during TKA. Kinematic examination, i.e. varus-valgus at full-extended knee (VV0), varus-valgus at 30° of flexion (VV30), anterior/posterior displacement at 90° of flexion (AP90), passive range of motion (ROM) were performed. Long-term clinical assessment interviews were performed. The Knee Injury and Osteoarthritis Outcome Score (KOOS) was used to investigate patients’ clinical and functional status.Out of 165 patients, 120 met the inclusion criteria. The average follow-up time was 7.7±2.8 years. 7 patients had undergone revision surgery and were considered as a surgical failure with an overall survival rate of 94.2%, while the survival rate at 6, 8, 10 years was 98.8%, 97.4%, 93.6%, respectively. Clinical failure (KOOS score &lt;70) was detected in 11 (9.2%), 10 (8.3%), 21 (17.5%), 39 (32.5%), 113 (94.2%) patients for the Symptoms, Pain, ADL, QoL, and Sport sub-scores, respectively. A statistically significant difference was found in KOOS-QoL between patients with and without clinical failure for the VV0 test (ES=0.58, p=0.022), with lower laxity for patients with score&lt;70.Over-constraint kinematics during TKA surgery leads to worse clinical outcomes at long-term follow-up. Surgeons should be aware of the intraoperative ligament balancing and avoid over-constraint, especially in PS TKA designs.
Effect of High Temperature Calcination on the Phase Compositions of Nanocrystalline Zirconia Powder and Coating
Authors: Jiang X.L. , Liu C.B. , Yu L.S. , Liu M. , Zhu Z.H. 
Published: December 2022

Abstract
In this study, agglomerated nanocrystalline ZrO2--Y2O3 powder was calcinated from 900 to 1300 °C for 2 h. The calcinated nanopowder was used as feedstock and deposited by air plasma spraying on a NiCoCr bond coat applied to a nickel substrate via low pressure plasma spraying. For comparison, conventional ZrO2-Y2O3 topcoats were also produced. Nanostructured and conventional thermal barrier coatings were calcinated from 1050 to 1250 °C for 2-20 h. Experimental results indicate that monoclinic tetragonal phases in the agglomerated nanopowder were transformed into cubic phase after calcination. The cubic phase content increased with increasing calcination temperature. High temperature calcination can make the yttria segregated at grain boundaries dissolve in zirconia. Different from the phase constituent of the as-sprayed conventional TBC, which consisted of diffusionless transformed tetragonal, the as-sprayed nanostructured TBC consisted of cubic phase containing high yttria. No phase transformations were observed in either TBC after calcination.
Failure of Thermal Barrier Coatings Subjected to CMAS Attack
Authors: Li L. , Hitchman N. , Knapp J. 
Published: December 2022

Abstract
This work investigates the effect of calcium-magnesium aluminosilicate (CMAS) deposits on thermal barrier coatings. CMAS infiltration was achieved by means of a cement tape containing synthetic glass powder. The tape was placed on coating surfaces and melted in a tube furnace or with a flame burner. The resulting coating failures were investigated by examining thermomechanical and thermochemical interactions between the coatings and aluminosilicate deposits. It was found that the porous nature of thermal spray TBCs makes them vulnerable to CMAS attack even before discernible chemical reactions start. Possible mitigation approaches are proposed for improving coating life under such conditions.
In-situ Particle Behavior of Cast Iron Powder by Suspension Plasma Spraying
Authors: Tekmen C. , Iwata K. , Tsunekawa Y. , Okumiya M. 
Published: December 2022

Abstract
In this study, suspension plasma spraying is used to produce cast iron coatings that benefit from a graphite structure. In order to increase the graphite content, different hydrocarbons in the form of liquid suspension (hexane and toluene) and gas precursor (methane) were injected into the plasma stream along with iron powder. Besides promoting the formation of a soot carbon structure, liquid hydrocarbon injection also prevents in-flight particle oxidation, which is a major concern when spraying metals. In addition, it has been observed that using a shroud during spraying significantly increases the amount of soot carbon in cast iron coatings, which can be transformed into graphite by post annealing.
Sub-Micrometer-Sized Y-PSZ Thermal Barrier Coatings Manufactured by Suspension Plasma Spraying: Process, Structure and Some Functional Properties
Authors: Ben-Ettouil F. , Denoirjean A. , Grimaud A. , Montavon G. , Fauchais P. 
Published: December 2022

Abstract
Suspension plasma spraying facilitates the production of thick coatings structured at the submicron or even nanometer scale. Due to the large volume fraction of internal interfaces, nanostructured coatings tend to be superior to their microstructured counterparts. Suspension plasma sprayed oxide ceramics, for example, have higher coefficients of thermal expansion, lower thermal diffusivity and hysteresis, higher hardness and toughness, and better wear resistance. In this work, Y-PSZ thermal barrier coatings are manufactured by means of SPS using two commercial submicron powders with different particle size distributions. By varying spray parameters, several coating architectures and thicknesses were achieved. The coatings were subjected to a series of thermal and isothermal shocks in order to assess the effect of particle size distribution, layer thickness, and substrate roughness on thermomechanical behavior.
Formation of Diamond-NiCrAl Cermet Coating through Cold Spray
Authors: Suo X.-K. , Li C.-J. , Yang G.-J. , Li C.-X. 
Published: December 2022

Abstract
In this work, diamond-NiCrAl composite powder was prepared by mechanical alloying and cold sprayed to form an ultra-hard cermet coating. The effect of diamond content on the characteristics of the milled powder and the as-sprayed coating was investigated. The results show that the microstructure, particle size distribution, and grain size of the powder was significantly influenced by the ball milling process and that the microstructure of the spray particles was completely retained in the coating.
Development of High Temperature Gas Heater in the Cold Spray Coating System
Authors: Fukanuma H. , Huang R. 
Published: December 2022

Abstract
This paper describes the development and use of a gas heating system for cold spraying. By heating helium and nitrogen gases to temperatures of up to 900 °C, deposition efficiencies of more than 90% have been achieved for titanium, niobium, and stainless steel as well as aluminum, copper, and nickel. Numerous coating examples are presented and discussed.
The Influence of Spray Conditions on Deposition Characteristics of Aluminum Coatings in Cold Spraying
Authors: Huang R.Z. , Fukanuma H. 
Published: December 2022

Abstract
In this study, aluminum powder is cold sprayed onto copper, Al 5052, and 304 stainless steel substrates at working gas temperatures of 200, 300, and 400 °C. In-flight particle temperatures and velocities are determined theoretically and compared with experimentally measured values. It is shown that particle velocity increases with increasing gas temperature, while critical velocity falls. At 400 °C, a deposition efficiency of more than 95% was achieved. In contrast, the bonding strength at the coating-substrate interface is influenced much more by the substrate material than gas temperature.
Thermal Stability of Cold Spray Titanium Structures
Authors: Jahedi Mahnaz , Zahiri Saden H. 
Published: December 2022

Abstract
Cold gas dynamic spraying has shown to be a promising approach for fabricating titanium structures directly from powder in the absence of a controlled atmosphere. This study investigates the effect of annealing on the microstructure, hardness, and tensile properties of commercial purity titanium deposited under cold spray conditions. Equiaxed grains with ultrafine grain structure are observed in the annealed samples. A physical based model is proposed for recrystallization of cold-sprayed titanium deposits and the results are compared with conventional cold-rolled and annealed titanium products.