bluuebunny/crossref_metadata_2025_split huggingface dataset:
Automatic analysis of morphological parameters of the patella based on three-dimensional (3D) surface data
Authors: Asseln Malte , Radermacher Klaus 
Published: October 2019

Morphological knowledge about the patella is fundamental to understand normal and pathological knee joint mechanics and guide the design of patellar prosthesis. In literature there are a large number of parameters and measurement methods described to characterize the patellar morphology. However, the majority rely on manual measurements, sample sizes are often small and the number of morphological parameters is limited. The goal of this study was to identify morphological parameters of the patella, develop a standardized and fully automatic workflow for their extraction, and to provide accurate statistical numbers for a large number of patients.An anonymized dataset of 412 knee geometries from consecutively scheduled total knee arthroplasty patients (gender: 248 female, 164 male) were available. A total number of 8 morphological parameters were identified and later used for the calculation of 3 additional aspect ratios. A fully automatic workflow was developed for parameter extraction based on the three-dimensional surface data. The workflow was applied to all datasets and the results were stored in a database for statistical analysis.The workflow could process all 412 patellar geometries fully automatic without any algorithmic adjustment or user interaction. The processing time was in the range of 30 s per case. The results of the statistical analysis were in very good agreement with the literature. The numbers clearly demonstrated gender-specific differences, however, it is still unknown whether these are sexual dimorphism or can be eliminated by a scaling. Extensive statistical analysis on gender-specific differences and their normalization is part of future work.
1-Year Patient Outcomes for Robotic-Arm Assisted vs. Manual Total Knee Arthroplasty
Authors: Marchand Robert , Sodhi Nipun , Anis Hiba , Ehiorobo Joseph , Newman Jared , Marchand Kevin , Taylor Kelly , Condrey Caitlin , Hepinstall Matthew , Mont Michael 
Published: October 2019

Introduction:Robotic-arm assisted (RAA) total knee arthroplasty (TKA) has been shown to potentially have certain pre- and intra-operative advantages over manual techniques. Although there are many studies on the alignment advantages when using the robotic-arm assisted (RAA) system for total knee arthroplasty (TKA), there have been questions regarding patient-reported outcomes. Therefore, the purpose of this study was to use this index to compare: 1) total; 2) physical function; and 3) pain scores for manual vs. RAA patients.Methods:We compared 53 consecutive robotic-arm assisted to 53 consecutive manual TKAs. No differences in pre-operative scores were found between the cohorts. Patients were administered a modified WOMAC satisfaction survey pre-operatively, and at 1-year post-operatively. Univariate analyses and multivariate models with stepwise backward linear regression were utilized to evaluate the associations between outcome scores and surgical technique, age, sex, as well as body mass index (BMI).Results:The RAA cohort had significantly improved mean total (6±6 vs. 9±8 points, p=0.03) and physical function scores (4±4 vs. 6±5 points, p=0.02) when compared to the manual cohort. The mean pain score for the RAA cohort [2±3 points (range, 0 to 14 points)], was also lower than that for the manual cohort [3±4 points (range, 0 to 11 points) (p=0.06)].On backward linear regression analyses, RAA was found to be significantly associated with more improved total (beta coefficient [β]-0.208, SE [standard error] 1.401, p&lt;0.05), function (β=0.216, SE=0.829, p&lt;0.05), and pain scores (β-0.181, SE=0.623, p=0.063). The RAA technique was found to have the strongest association with improved scores.Conclusion:With newer surgical technologies constantly being introduced, it is imperative to continue to evaluate these new modalities, particularly in their abilities to improve patient satisfaction outcomes. This study suggests that RAA patients may have short term improvements at minimum 1-year post-operative. However, longer-term follow up with greater sample sizes are needed to further validate these findings.
3D extended field-of-view of the knee joint bones using ultrasound: Application in orthopaedics
Authors: Nasan Maged , Morvan Yannick , Dardenne Guillaume , Chaoui Jean , Stindel Eric 
Published: October 2019

Patient Specific Instruments (PSIs) have been introduced into the surgical workflow as a modern way to assist the surgeon in performing femur and tibia resection in Total Knee Arthroplasty (TKA). These PSIs are based on an accurate reconstruction of the surface of the knee’s bones.In this work, we propose two 3D-3D image-based registration methods to reconstruct an extended field-of-view of the knee joint using only a motorized ultrasound transducer. Those methods are: (1) a dense voxel-based registration method, which needs to preprocess the ultrasound images and form an ultrasound volume. Then, computing the Mutual Information (MI) for each relative displacement to align every pair of volumes, (2) a sparse point-based registration method, which takes into account the point set located on the surface of the bone in ultrasound images. This method detects bony features using ORB detector and matches the corresponding points to find the best transformation using Coherent Point Drift (CPD).The preliminary qualitative results performed in vitro show that from a set of consecutive ultrasound volumes, an extended field-of-view can be reconstructed using only ultrasound images without any external trackers. Results of the voxel-based approach show that MI is more robust against noise comparing to other similarity measures. On the other hand, results of point-based approach show that is much faster in computation with a low false-positive rate compared to other feature-detectors like SIFT and SURF. Furthermore, experiments show that CPD is less affected by noisy data compared to the classical ICP, which is promising to continue evaluating our work in vivo.
Automatic standardized shape analysis of the sagittal profiles (J-Curves) of the femoral condyles based on three-dimensional (3D) surface data
Authors: Asseln Malte , Fischer Maximilian C. M. , Chan Hao Yang , Meere Patrick , Walker Peter , Radermacher Klaus 
Published: October 2019

The sagittal geometry of the articular surfaces of the femoral condyles, also called J-Curves because of the letter J-shaped profiles, is one of the main factors affecting knee kinematics in the normal knee[1] as well as artificial knee [2]. For example, Clary et al. [2] showed that large changes in the J-curves’ radii cause abrupt changes in the center of rotation, leading to decreased anterior-posterior stability. In literature, the sagittal profile has been described mathematically by different geometric figures, such as arcs, circles, involutes of a circle, and Archimedean and logarithmic spirals [3]. The circular approximation has been often followed in the different concepts of knee implant designs, such as single- radius-, dual-radius-, or multiple-radius-designs. Single-radius-designs have a fixed flexion-extension axis. Dual-radius-designs consist of a larger distal and smaller posterior radius aiming a higher congruence during low flexion (high loading) and lower congruence at high flexion angles (high mobility). Multi-radius-designs try to mimic a physiological roll-glide ratio. However, the description of these circles is usually not standardized. A summary of different measurement methods was given by Nuno and Ahmed [4].Thereby, the radii are very sensitive regarding the length of the fitting arc [5] and position of the sagittal plane [3]. Nuno and Ahmed [3] found that medial and lateral condyles can be adequately described by two-circular arcs and proposed a quantitative description. However, the posterior limits of their arcs were not considered individually, the anterior limits were defined based on soft-tissue measurements (anterior margins of the menisci), and the sagittal plane was positioned at the posterior extreme points, which might be inadequate in arthritic knees.The goal of this study was to automatically analyse the medial and lateral sagittal profiles of the femoral condyles mathematically by two-circular arcs in a standardized and robust fashion.
Robotic use improves post-resection bone cuts during total knee arthroplasty
Authors: Scholl Laura , Hampp Emily , Alipit Vincent , Mont Michael , Bhave Anil , Chen Antonia 
Published: October 2019

The purposes of this study were to assess 1) number of bone recuts with manual TKA (MTKA) vs RATKA and 2) influence of robotics on surgeon’s posture and workload during recutting.Two surgeons each performed three MTKAs and three RATKAs. Occurrence, time and type of post-resection recuts were recorded. Movement sensors were placed on surgeons to measure lower back, shoulder, and cervical movements. Data was analyzed for average angle, percent of time in high-risk range of motion (ROM), number of times in high-risk sustained positions, and repetitions per minute. Surgeons were surveyed to assess physical and mental effort on a 1-10 scale (1 as lowest effort).Six TKAs required recuts, five MTKA and one RATKA. 5 were on tibia and 1 (MTKA) was on femur. Compared to RATKA, MTKA had: increased time to perform recut (4.8-minutes vs. 3.7-minutes), increased occiput and T3 (38.9 vs 17.0° and 16.0 vs 3.0°) average angles, increased lower back ROM, sustained positions, and repetitions (14 vs 0%, 1 vs 0, and 1.9 vs 0), increased non-dominant shoulder ROM and repetitions (22 vs 0% and 2 vs 1), reduced dominant shoulder ROM (56 vs 19%), increased mental (4.2 vs 2.8) efforts and increased physical (3.3 vs 1.7) efforts.Results indicate RATKA may reduce incidence of post-resection bone recuts. Increased time and required efforts for MTKA may be due to setting up surgical cutting instruments. Whereas, for RATKA, recut changes are made on the robotic surgical screen and the robotic-arm is used to help perform the recut.
Robotic Assisted Total Knee Arthroplasty in Presence of Extra-Articular Deformity
Authors: Sodhi Nipun , Khlopas Anton , Ehiorobo Joseph , Condrey Caitlin , Marchand Robert , Hepinstall Matthew , Mont Michael 
Published: October 2019

Introduction:There is a lack of data concerning the use of the robotic device for patients with other potentially complex surgical factors. Therefore, the purpose of this series was to present cases in which the robotic-arm assisted TKA (RATKA) application was used in the setting of extra-articular deformities to educate the surgeon community on this potentially useful method to address these complex cases.Methods:Three cases of patients who underwent RATKA in the setting of pre-operative extra-articular deformities were identified. One had femoral and tibial fracture malunion, another had proximal tibial fracture nonunion, and another with a healed tibial plateau fracture. Patient clinical histories, intra-operative surgical techniques, and post-operative outcomes were obtained. Specific focus was placed on the surgical management of the patient’s pre-existing deformity.Results:The robotic software was able to appropriately consider the extra-articular deformity in the pre-operative and real-time updated intra-operative plans. Doing so, the surgeon achieved a balanced and aligned TKA. No intra-operative or post-operative complications occurred. Antero-posterior and lateral radiographs demonstrated well fixed and aligned femoral and tibial components with no signs of loosening or osteolysis. On physical exam, all patients had excellent range of motion with mean flexion of 122 degrees (range: 120 to 125 degrees of flexion) at final follow-up.Discussion:Utilizing pre-operative CT-scans with a 3D plan for robotic-arm assisted surgery allowed for appropriate assessment of the deformity pre-operatively and execution of a plan for a balanced and aligned total knee arthroplasty. We have demonstrated excellent results utilizing robotic-arm assisted TKA in these complex cases.
Plant Diversity in Different Land Use Types at The Peat Hidrological Unit (PHU) of Mendahara – Batanghari River, Jambi Province
Authors: Dwisutono Aji Nuralam , Budi Sri Wilarso , Istomo Istomo 
Published: October 2019

The characteristics of tropical peatlands are still able to form a high diversity of plants. Conversion of tropical peatlands affects the composition of plants. The aim of this study was to find out effect of land use changes to the composition and diversity of plants in the Peat Hydrological Unit (PHU) Mendahara - Batanghari River. The research was conducted in three land use categories, namely secondary forest, coffee plantation, and oil palm plantation (subdivided into oil palm plantation 1 and oil palm plantation 2). In each study location, sample lane 20 m x 200 m were made. Overall, we found 77 species of plants. The results showed number of plant species decreased due to changes of land use. There are 51 - 53 species of plants in secondary forest areas (out of a total of 58 species) that are not found in oil palm and coffee plantations areas. Differences in composition were also shown in the low value of community similarity (<50%). In the oil palm and coffee plantation areas, plant communities tend to be dominated by pioneer plants such as Melicope lunu-ankenda, Coffea liberica, Macaranga triloba, and Melastoma malabathricum. Secondary forest was dominated by plants species that characterize peatlands such as Tetramerista glabra, Parastemon urophyllus, Knema percoriacea, Litsea costalis var. nidularis and Madhuca motleyana. Changes in land use also reduce the level of diversity (H 'and R) at various levels of growth. Whereas in the oil palm and coffee plantation areas tend to form uniform stands (indicated through index E which describes the abundance distribution in community and index C which describes the dominance of species). Generally, the distribution pattern of plants is clumped. Uniform distribution was found in K. percoriacea and L. costalis var. nidularis. Keywords: land use changes, peatland characteristics, plant composition, plant diversity
Membangun Karakter Anak Sejak Dini Melalui Komunikasi Efektif Dalam Mereduksi Bullying Pada Kelompok Bermain, TK A, dan TK B Hifzhul Amanah
Authors: Ladeska Vera , Prastiwi Rini , Dewanti Ema 
Published: October 2019

Perilaku bullying disekolah merupakan salah satu permasalahan sosial yang kini sangat banyak ditemukan dan memiliki dampak negatif pada kondisi psikologis dan sosial siswa yang pada akhirnya akan mempengaruhi proses belajar mengajar siswa di sekolah. Banyak guru dan orang tua di sekolah taman kanak-kanak tidak menyadari bahwa perilaku anak didiknya sudah mengarah dan memperlihatkan tindakan bully. Perilaku bullying harus dicegah sedini mungkin agar menghasilkan anak didik yang sehat dalam pergaulan sosialnya. Program pengabdian masyarakat ini merupakan program pelatihan preventif untuk mencegah dan meminimalkan bully disekolah . Kegiatan dilaksanakan diruang aula Kelompok Bermain (KB), TK A dan TK B Hifzhul Amanah Perumnas Klender yang diikuti oleh staf guru, para siswa, orang tua murid. Metode yang dipakai adalah penjelasan materi berupa ceramah, interaktif dalam diskusi, pendekatan komunikasi dengan anak didik melalui permainan. Mitra menyambut positif kegiatan ini dan terbukti dari antusiasnya peserta dalam berdiskusi karena tema yang diadakan sangat sesuai dengan problema dunia anak sekarang. Karena adanya keterbatasan waktu mitra mengharapkan adanya kelanjutan kegiatan pada periode yang akan datang. Hasil dari kegaiatan ini diharapkan mitra akan membentuk suatu kebijakan antibullying yang disepakati oleh siswa, guru .membangun komunikasi dan interaksi antar civitas akademika, penegakan aturan/sanksi/disiplin sesuai kesepakatan. Sangat penting guru dan orang tua memiliki pengetahuan dan ketrampilan mengenai pencegahan dan cara mengatasi bullying pada anak usia dini sehingga terhindar dari dampak negative dikemudian hari.
PERANCANGAN ULANG PRODUK BOTOL TUMBLER DENGAN MEMPERTIMBANGKAN USER EXPERIENCE MENGGUNAKAN METODE GENEVA EMOTION WHEEL (GEW) (Studi Kasus: Starbucks Samarinda)
Authors: Fathimahhayati Lina Dianati , Irawati Amalia Dwi , Sukmono Yudi 
Published: October 2019

Banyaknya produk yang beredar adalah salah satu tantangan besar suatu perusahaan dalam meraih kesuksesan penjualan. Tumbler adalah salah satu barang yang cukup banyak digunakan oleh manusia. Salah satu jenis tumbler yang diminati masyarakat adalah tumbler keluaran salah satu kedai kopi terkenal yaitu Starbucks. Fungsi botol tumbler sendiri sangat membantu dalam kemudahan membawa minuman dan berperan penting terhadap kelestarian lingkungan karena mengurangi penggunaan botol plastik. Permasalahan yang muncul adalah semakin banyaknya ragam tumbler yang ditawarkan dengan banyak pilihan jenis, model, bahan, dan harga sehingga tidak jarang terdapat beberapa jenis tumbler yang kurang diminati dan memiliki tingkat penjualan yang rendah. Pengumpulan data pada penelitian ini dilakukan dengan wawancara, observasi jumlah populasi, pengisian kuesioner Geneva Emotion Wheel (GEW) dan Usability Testing waktu. Kuesioner Geneva Emotion Wheel (GEW) digunakan untuk mengetahui nilai-nilai emosi responden terhadap produk tumbler sebelum dan sesudah product testing serta tumbler hasil perancangan ulang. Kuesioner terdiri dari 10 emosi positif dan 10 emosi negatif yang dirasakan oleh responden. Selain menilai responden juga memberikan alasan dan usulan terhadap produk. Usability Testing dilakukan agar responden dapat berinteraksi dengan produk. Pada penelitian ini dilakukan penilaian tampilan awal produk, product testing, dan penilaian produk setelah product testing. Selanjutnya dilakukan perancangan ulang produk berdasar alasan dan usulan yang telah diberikan dan dinilai kembali oleh responden. Nilai rata-rata awal tampilan tumbler 1 adalah 2,91, sesudah product testing adalah 2,86 dan nilai rancangan ulang produk adalah 3,16. Hal itu disebabkan karena responden puas dengan perubahan volume tumbler yang menjadi lebih banyak dan terdapat tempat untuk whipped cream dan sedotan. Nilai rata-rata awal tampilan tumbler 2 adalah 2,58, sesudah product testing adalah 2,59 dan nilai rancangan ulang produk adalah 3,20. Hal itu disebabkan karena responden menyukai penambahan sedotan yang dapat memudahkan penggunaannya. Nilai rata-rata awal tampilan tumbler 3 adalah 2,20, sesudah product testing adalah 2,21 dan nilai rancangan ulang produk adalah 2,74Nilai rata-rata emosi positif pada masing-masing tumbler mengalami peningkatan setelah dilakukan perancangan ulang.
MODIFIKASI PLA/KITOSAN DENGAN ESSENSIAL OIL UNTUK APLIKASI ANTIBAKTERIAL
Authors: Rihayat Teuku , Fitriyani Cut Nurul 
Published: October 2019

Minyak esensial kayu manis(CEO) adalah zat anti mikroba alami yang sedang diselidiki untuk kemasan makanan sebagai pengganti bahan kimia sintetis karena kekhawatiran konsumen atas keamanan pangan. Pada penelitian ini Poli asam laktat (PLA) dan kitosan berhasil dimodifikasikan dengan minyak essensial oil (CEO)pada konsentrasi(1,5%,2%,2,5%,dan3%v/v) yang membentuk serat-serat komposit dengan menggunakan metode electro spinning sederhana. Morfologi dari serat-serat komposit dapat dilihat dari PLA/CS-CEO-2.5 menunjukkan stabilitas yang baik dari CEO, sehingga aktivitas anti mikroba peningkatan dibandingkan dengan campuran lainnya. Serat PLA/CS-CEO menunjukkan tingkatin aktivasi jangka panjang yang tinggi terhadap Escherichia coli dan Staphylococcusaureus karena pelepasan berkelanjutan CEO, menunjukkan bahwa maju PLA/CS-CEO fibers memiliki potensi besar untuk aplikasi kemasan makanan aktif.
PENYISIHAN ION LOGAM Fe PADA AIR GAMBUT MENGGUNAKAN ADSORBEN ARANG AKTIF KULIT SINGKONG
Authors: Rosita Elia , Zaini Halim , Fauzan Reza 
Published: October 2019

Arang aktif dapat dibuat dari berbagai macam bahan baku salah satunya adalah kulit singkong karena kulit singkong memiliki kandungan karbon sebesar 59,31%. Salah satu pemanfaatan arang aktif adalah sebagai adsorben arang aktif pada pemurnian air gambut. Pada rancangan percobaan, sebagai variabel tetap digunakan berat adsorben arang, yaitu sebesar 50 g, ukuran partikel 10 mesh dan volume adsorbat digunakan 10 liter, laju alir 4 liter/menit. Variabel bebas waktu adsorpsi 0; 30; 60; 90; 120; 180; 240 menit dan jenis adsorben: aktivasi fisik dan aktivasi kimia (H2SO4 5N dan NaOH 5N). Hasil penelitian menunjukan bahwa adsorpsi logam Fe dipengaruhi oleh waktu dan aktivator. Model kinetika adsorpsi memenuhi kinetika pseudo orde dua terjadi pada waktu 180 menit untuk aktivasi fisika sebesar 0,05228 mg/g, aktivasi kimia H2SO4 0,5 N 0,09199 mg/g dan aktivasi kimia NaOH 0,5 N 0,11298 mg/g. Persen masa penyisihan Fe tertinggi untuk aktivasi fisika 33,25%, aktivasi kimia dengan H2SO4 5N 80,20% dan aktivasi kimia dengan NaOH 5N 52,55%.
ADSORPSI LOGAM Cd2+ MENGGUNAKAN BIOADSORBEN BERBASIS KOMPOSIT FILM KITOSAN-LIMBAH CANGKANG KOPI
Authors: Ayunda Lesy , Nurmala Nurmala , Ramadhana Al Dhita , Satriananda Satriananda 
Published: October 2019

Pemanfaatan limbah sebagai bioadsorben alternatif untuk mengurangi tingkat pencemaran logam berat Cd2+ pada penelitian ini,dilakukan melalui proses sintesis komposit film dari kitosan (Ks) dan limbah cangkang kopi (LCK). Bertujuan untuk mendapatkan pengaruh penambahan LCK dan variasi waktu adsorpsi terhadap efesiensi penyisihan ion logam Cd2+. Adsorpsi ion logam Cd2+ dilakukan dengan variasi penambahan LCK 0, 5 dan 10% (%b) serta variasi waktu 0, 30, 60, 90 dan 120 menit. Hasil adsorpsi dianalisa konsentrasinya menggunakan spekrofotometer serapan atom (AAS). Secara keseluruhan hasil menunjukkan peningkatan efesiensi penyerapan yang baik oleh komposit Ks-LCK10% pada waktu kontak 120 menit sebesar 92,26 % dengan konsentrasiakhir0.77 mg/L.Sehingga disimpulkan bahwa komposit film Ks-LCK pada penelitian ini dapat digunakan sebagai adsorben ramah lingkungan untuk menurunkan kadar ion logam Cd2+ dalam air.
PERFORMANCE OF RED CHILI PEPPER IN NORTH SUMATERA CASE: BERINGIN DISTRIC, DELI SERDANG REGENCY
Authors: Nasution Amelira Haris 
Published: October 2019

Red chili pepper is an important commodity for the people of Indonesia. Therefore the government has set red chili pepper as a strategic commodity with a production target of 2.29 million tons in 2019. One of the centers of red chili pepper production is North Sumatera. As a production center, the problem is usually about the low prices at the farm level. This is due to the lack of a marketing channel role analysis that could accommodate farmers' aspirations, causing farmers to not have bargaining power, so farmers are only a "price taker”. The purpose of this study is to analyze the red chili pepper marketing system through marketing channel analysis, marketing channel role analysis and operational efficiency analysis through marketing margins and farmer shares. This study was conducted from June 2019 until August 2019 in Beringin District, Deli Serdang Regency, North Sumatra. Farmers were selected using purposive sampling methods, and middlemen were chosen by using the snowball sampling method. In processing data this study uses descriptive qualitative and quantitative analysis. The results showed that there were 3 channels in marketing red chili pepper. Based on the results of the efficiency analysis it was found that marketing channel 2 was the most efficient channel due to several things, such as the existence of cooperation with the collector and the unavailability of other marketing institutions that favored the red chili pepper farmers. In order to improve bargaining power, farmers need to strengthen the existing STA to be able to reach all red chili farmers.