bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH PENGELOLAAN KESELAMATAN DAN KESEHATAN KERJA TERHADAP PRODUKTIVITAS KERJA PADA PEKERJAAN KONSTRUKSI GEDUNG DI CV. PILAR BLITAR MAPAN
Authors: Nadhir Abu 
Published: June 2019

Keselamatan dan Kesehatan Kerja (K3) memang merupakan salah satu persyaratan untuk meningkatkan produktivitas kerja karyawan yang erat kaitannya dengan hasil kerja. Pada dasarnya K3 adalah upaya mencegah/ menghindari/ mengurangi kecelakaan kerja dengan cara menghentikan/ meniadakan/ menghilangkan resiko (unsur bahaya) guna mencapai target kerja. Perusahaan yang baik adalah perusahaan yang benar-benar menjaga keselamatan dan kesehatan karyawannya dengan membuat aturan tentang keselamatan dan kesehatan kerja yang dilaksanakan oleh seluruh karyawan dan pimpinan perusahaan.Â Tujuan dilaksanakan penelitian ini adalahÂ untuk mengungkap pengaruh pengelolaan keselamatan dan kesehatan kerja terhadap produktivitas kerja pada pekerjaan kontruksi gedung di CV. Pilar Blitar Mapan Sejahtera, tujuan lainnya yaitu ingin mengetahui seberapa besar pengaruh pengelolaan keselamatan dan kesehatan kerja terhadap produktivitas kerja pada pekerjaan kontruksi gedung di CV. Pilar Blitar Mapan Sejahtera.Â Penelitian dilaksanakan dengan menggunakan metode analisis, yaitu dengan cara menganalisis permasalahan-permasalahan yang dihadapi oleh perusahaan atau tempat usaha berdasarkan data-data yang ada. Penelitian ini dirancang dengan pendekatan dekskriptif kuantitatif, artinya mendrekskripsikan halâ€“hal terkait dengan tujuan penelitian secara kuantitatif. Analisis data dalam penelitian ini menggunakan perhitungan progam SPSS. Versi 17 yang menggunakan analisis data statistic.Hasil penelitian yang diperoleh didapatkan bahwa nilai Sig (2-tailed) = 0,000 karena nilai Sig (2-tailed) < 0,05 maka disimpulkan terdapat hubungan yang signifikan antara Pengelolaan Keselamatan Kerja (K3) terhadap Produktivitas kerja pekerja. Untuk melihat seberapa kuat hubungannya dapat dilihat dari nilai Pearson Correlation, dari tabel output di dapatkan nilai r = 0,873 jika dibandingkan pada tabel interpretasi koefisien korelasi di atas maka disimpulkan kekuatan hubungannya sangat kuat dan antara variabel X dan variabel Y searah artinya semakin tinggi/ baik pengelolaan Keselamatan Kerja seseorang maka semakin tinggi pula nilai produktivitas kerja pekerja.Kesimpulan dari penelitian ini yaitu Hasil dari output (tabel coefficients Deteksi Hipotesis secara Uji t) diketahui nilai thitung = 6,438 dengan nilai signifikansi 0,000 < 0,05 maka Ho ditolak dan Ha diterima, yang berarti ada pengaruh yang signifikan variabel (X) pengelolaan Keselamatan dan Kesehatan Kerja (K3) terhadap variabel Produktivitas Kerja karyawan (Y).
PENAMBAHAN ABU PADAM SERBUK KAYU MAHONI SISA PEMASAKAN TAHU SEBAGAI BAHAN IMBUH PASIR DALAM MENINGKATKAN KUAT TEKAN BATA RINGAN
Authors: Kurniawan Achendri M. 
Published: June 2019

Â Blitar city experienced a fairly rapid development in the field of trade. One of them is handicraft industry from wood, especially kendang jimbe. The area that is quite famous as a producer of jimbe kendang is Tanggung Village, Kepanjenkidul Subdistrict, Blitar City. In this area most of the people work as kendang craftsmen, is also a center of handicraft lathe in Blitar City. Basically, Blitar people earn from this activity, in this case people can not make good use of the rest of the activity, especially the utilization of ash of burning of mahogany powder. Of the abundant ash of the combustion of mahogany wood is expected to be used as an additional mixture of lightweight concrete. The method used in this study using laboratory experiments and guided on SNI 03-0691-2000. Mixture of mahogany ash dust, and know the compressive strength of lightweight brick with dust ash material as added sand material 0%, 25%, 50%. From this comparison can be generated as follows: The use of ash of dried mahogany ash adds fine aggregate material (sand) in concrete brick mixture at 7 days old for 0% mixture is 3.28 MPa. Strong press for substitution 25% wood ash larger 26,37% that is 4,14 MPa and object of test with substitution 50% decrease 12,46% that is 2,87 MPa.Â Kota Blitar mengalami perkembangan yang cukup pesat di bidang perdagangan. Salah satunya adalah industri kerajinan dari kayu, terutama kendang jimbe. Daerah yang cukup terkenal sebagai penghasil jimbe kendang adalah Desa Tanggung, Kecamatan Kepanjenkidul, Kota Blitar. Di daerah ini sebagian besar orang bekerja sebagai pengrajin kendang, juga merupakan pusat kerajinan bubut di Kota Blitar. Pada dasarnya, orang Blitar mendapatkan dari kegiatan ini, dalam hal ini orang tidak dapat memanfaatkan sisa kegiatan, terutama pemanfaatan abu pembakaran serbuk mahoni. Dari abu yang melimpah dari pembakaran kayu mahoni diharapkan dapat digunakan sebagai campuran tambahan beton ringan. Metode yang digunakan dalam penelitian ini menggunakan eksperimen laboratorium dan dipandu pada SNI 03-0691-2000. Campuran debu abu mahoni, dan mengetahui kekuatan tekan bata ringan dengan material abu debu sebagai bahan pasir tambahan 0%, 25%, 50%. Dari perbandingan ini dapat dihasilkan sebagai berikut: Penggunaan abu abu mahoni kering menambah bahan agregat halus (pasir) dalam campuran bata beton pada umur 7 hari untuk campuran 0% adalah 3,28 MPa. Pers yang kuat untuk substitusi 25% abu kayu lebih besar 26,37% yaitu 4,14 MPa dan objek uji dengan substitusi 50% turun 12,46% yaitu 2,87 MPa.
SIMULASI GANGGUAN VOLTAGE SAG DAN VOLTAGE SWELL PADA JARINGAN 20 KV MENGGUNAKAN MATLAB SIMULINK
Authors: Ihwanudin Mustofa 
Published: June 2019

Pada jaringan distribusi sering muncul gangguan yang bisa mengakibatkan penurunan kualitas daya, diatara penyebab penurunan kualitas daya adalah voltage sag dan voltage swell. Gangguan jenis ini dapat mengakibatkan gagal operasi peralatan terutama yang menggunakan komponen elektronik daya. Penelitian berupa simulasi untuk menggambarkan terjadinya voltage sag dan voltage swell yang disebabkan gangguan fasa ke tanah dan pelepasan beban yang di variasi dengan sambungan trafo distribusi yang berbeda. Simulasi dilakukan menggunakan software matlab simulink. Hasilnya model simulasi mampu menggambarkan sinyal voltage sagÂ akibat hubung singkat satu fasa, dua fasa, tiga fasa ke tanah dan sinyal voltage swell akibat pelepasan beban.
Analisis Perubahan Suhu Ruangan Dan Prosentase Pemakaian H2SO4 (Asam Sulfat) Dalam Mempengaruhi Pengujian Ratio Cover Dan Kekuatan Filament Polyester Benang Core-Spun 128 D-Tex Di Mesin Core Spinning Merk Rieter Type G-5
Authors: Yufron Ahmad 
Published: June 2019

ABSTRAK
Studi Tentang Pengaruh Variasi Suhu Ruangan Dan Prosentase Pemakaian H2SO4 (Asam Sulfat) Terhadap Pengujian Ratio Cover Dan Kekuatan Filament Polyester Benang Core-Spun 128 d-Tex Dari Mesin Ring Core Spinning Merk Rieter Type G 5 / 1 Di PT. Tool Thread Indonesia, Pleret Pasuruan – Jawa Timur
Kata Kunci :

Ratio Cover
Core-Spun
Filament Polyester
H2SO4
The Effect of Triage Assessments on Identifying Inflammatory Arthritis and Reducing Rheumatology Wait Times in Ontario
Authors: Ahluwalia Vandana , Lineker Sydney , Sweezie Raquel , Bell Mary J. , Kendzerska Tetyana , Widdifield Jessica , Bombardier Claire ,   the Allied Health Rheumatology Triage Investigators
Published: June 2019

Objective.We evaluated the influence of triage assessments by extended role practitioners (ERP) on improving timeliness of rheumatology consultations for patients with suspected inflammatory arthritis (IA) or systemic autoimmune rheumatic diseases (SARD).Methods.Rheumatologists reviewed primary care providers’ referrals and identified patients with inadequate referral information, so that a decision about priority could not be made. Patients were assessed by an ERP to identify those with IA/SARD requiring an expedited rheumatologist consult. The time from referral to the first consultation was determined comparing patients who were expedited to those who were not, and to similar patients in a usual care control group identified through retrospective chart review.Results.Seven rheumatologists from 5 communities participated in the study. Among 177 patients who received an ERP triage assessment, 75 patients were expedited and 102 were not. Expedited patients had a significantly shorter median (interquartile range) wait time to rheumatologist consult: 37.0 (24.5–55.5) days compared to non-expedited patients [105 (71.0–135.0) days] and controls [58.0 (24.0–104.0) days]. Accuracy comparing the ERP identification of IA/SARD to that of the rheumatologists was fair (κ 0.39, 95% CI 0.25–0.53).Conclusion.Patients triaged and expedited by ERP experienced shorter wait times compared to usual care; however, some patients with IA/SARD were missed and waited longer. Our findings suggest that ERP working in a triage role can improve access to care for those patients correctly identified with IA/SARD. Further research needs to identify an ongoing ERP educational process to ensure the success of the model.
Magnetic Resonance Imaging (MRI) Results Following Discontinuation of Methotrexate in Rheumatoid Arthritis Treated with Subcutaneous Tocilizumab: The COMP-ACT MRI Substudy
Authors: Peterfy Charles , Kremer Joel , Rigby William , Singer Nora , Birchwood Christine , Gill Darcy , Reiss William , Pei Jinglan , Michalska Margaret 
Published: June 2019

Objective.To assess differences in joint damage and inflammation using magnetic resonance imaging (MRI) between patients with rheumatoid arthritis (RA) who achieved low disease activity with tocilizumab (TCZ) + methotrexate (MTX) and subsequently continued or discontinued MTX.Methods.In the COMP-ACT trial, US patients with RA received subcutaneous TCZ 162 mg + MTX. Those who achieved 28-joint count Disease Activity Score calculated with erythrocyte sedimentation rate (DAS28-ESR) ≤ 3.2 at Week 24 were randomized 1:1 (double-blind) to discontinue MTX (TCZ monotherapy; mono) or continue TCZ + MTX until Week 52. In a subset of patients, 1.5-Tesla MRI was used to obtain images of bilateral hands and wrists at weeks 24 and 40. Outcomes included changes in MRI-assessed synovitis, osteitis, erosion, and cartilage loss from Week 24 to Week 40, and in the proportion of patients with progression of each score.Results.Of 296 patients who achieved DAS28-ESR ≤ 3.2 at Week 24, 79 were enrolled in the pilot MRI substudy and randomized to TCZ mono (n = 38) or TCZ + MTX (n = 41). Treatment with either TCZ mono or TCZ + MTX suppressed erosion progression, synovitis, osteitis, and cartilage loss. The proportion of patients with no progression in each outcome measure was similar between groups (range, TCZ mono: 84.8–97.0%; TCZ + MTX: 92.3–100%).Conclusion.In a subset of patients who achieved low disease activity with TCZ + MTX, MRI changes were minimal in intraarticular inflammation and damage measures in patients who discontinued MTX versus those who continued TCZ + MTX.
Vascular Pathology and Osteoarthritis: A Systematic Review
Authors: Hussain Sultana Monira , Dawson Chloe , Wang Yuanyuan , Tonkin Andrew M. , Chou Louisa , Wluka Anita E. , Cicuttini Flavia M. 
Published: June 2019

Objective.Vascular pathology (changes in blood vessels) and osteoarthritis (OA) are both common chronic conditions associated with aging and obesity, but whether vascular pathology is a risk factor for OA is unclear. The aim of this study was to systematically review the evidence for an association between vascular pathology and risk of joint-specific OA.Methods.Scopus, Ovid Medline, and EMBASE were searched from inception to February 2019. MeSH terms and keywords were used to identify studies examining the association between vascular pathology and OA. Two reviewers independently extracted the data and assessed the methodological quality. Qualitative evidence synthesis was performed.Results.Fifteen studies with high (n = 3), fair (n = 3), or low (n = 9) quality were included. Features of vascular pathology included atherosclerosis, vascular stiffness, and endothelial dysfunction in different vascular beds. There was evidence for an association between vascular pathology and risk of hand OA in women but not men, and between vascular pathology and risk of knee OA in both men and women. Only 2 studies examined hip OA showing no association between vascular pathology and risk of hip OA.Conclusion.There is evidence suggesting an association between vascular pathology and risk of hand and knee OA, with a potential causal relationship for knee OA. Based on the limited evidence, it is hard to conclude an association for hip OA. Further stronger evidence is needed to determine whether there is a causal relationship.
Longterm Drug Survival of Tumor Necrosis Factor Inhibitors in Patients with Rheumatoid Arthritis
Authors: Emery Paul , Vlahos Bonnie , Szczypa Piotr , Thakur Mazhar , Jones Heather E. , Woolcott John , Santos Estrella Paul V. , Rolland Catherine , Gibofsky Allan , Citera Gustavo , Sockalingam Sargunan , Marshall Lisa 
Published: June 2019

Objective.To evaluate longterm drug survival (proportion of patients still receiving treatment) and discontinuation of etanercept (ETN), infliximab (IFX), adalimumab (ADA), certolizumab pegol (CZP), and golimumab (GOL) using observational data from patients with rheumatoid arthritis (RA).Methods.Following a systematic literature review, drug survival at 12 and 12–24 months of followup was estimated by summing proportions of patients continuing treatment and dividing by number of studies. Drug survival at ≥ 36 months of followup was estimated through Metaprop.Results.There were 170 publications included. In the first-line setting, drug survival at 12 months with ETN, IFX, or ADA was 71%, 69%, and 70%, respectively, while at 12–24 months the corresponding rates were 63%, 57%, and 59%. In the second-line setting, drug survival at 12 months with ETN, IFX, or ADA was 61%, 69%, and 55%, respectively, while at 12–24 months the corresponding rates were 53%, 39%, and 43%. Drug survival at ≥ 36 months with ETN, IFX, or ADA in the first-line setting was 59% (95% CI 46–72%), 49% (95% CI 43–54%), and 51% (95% CI 41–60%), respectively, while in the second-line setting the corresponding rates were 56% (95% CI 52–61%), 48% (95% CI 40–55%), and 41% (95% CI 36–47%). Discontinuation of ETN, IFX, and ADA at 36 months of followup was 38–48%, 42–62%, and 38–59%, respectively. Data on CZP and GOL were scarce.Conclusion.After > 12 months of followup, more patients with RA receiving ETN remain on treatment compared with other tumor necrosis factor inhibitors.
Malignancies in Giant Cell Arteritis: A Population-based Cohort Study
Authors: Stamatis Pavlos , Turesson Carl , Willim Minna , Nilsson Jan-Åke , Englund Martin , Mohammad Aladdin J. 
Published: June 2019

ObjectiveTo investigate the risk of cancer in patients with biopsy-proven giant cell arteritis (GCA) from a defined population in southern Sweden.Methods.The study cohort consisted of 830 patients (mean age at GCA diagnosis was 75.3 yrs, 74% women) diagnosed with biopsy-proven GCA between 1997 and 2010. Temporal artery biopsy results were retrieved from a regional database and reviewed to ascertain GCA diagnosis. The cohort was linked to the Swedish Cancer Registry. The patients were followed from GCA diagnosis until death or December 31, 2013. Incident malignancies registered after GCA diagnosis were studied. Based on data on the first malignancy in each organ system, age- and sex-standardized incidence ratios (SIR) with 95% CI were calculated compared to the background population.Results.One hundred seven patients (13%) were diagnosed with a total of 118 new malignancies after the onset of GCA. The overall risk for cancer after the GCA diagnosis was not increased (SIR 0.98, 95% CI 0.81–1.17). However, there was an increased risk for myeloid leukemia (2.31, 95% CI 1.06–4.39) and a reduced risk for breast cancer (0.33, 95% CI 0.12–0.72) and upper gastrointestinal tract cancer (0.16, 95% 0.004–0.91). Rates of other site-specific cancers were not different from expected.Conclusion.In this Swedish population-based cohort of GCA, the overall risk for cancer was not increased compared to the background population. However, there was an increased risk for leukemia and a decreased risk for breast and upper gastrointestinal tract cancer.
Optimization of Foam-Mat Drying Process of Watermelon Pulp Using Response Surface Methodology
Authors: Isa J. , Olalusi A. P. 
Published: June 2019

Introduction: Foam mat drying involves the change of agricultural material from a high moisture content level to a stable foam which is achieved by moisture reduction mechanism.
Aim: In this study, foam-mat drying process of watermelon was optimized using response surface methodology. Foaming conditions (carboxyl methyl cellulose and egg albumen) and the drying system parameters (air velocity and air temperature) were optimized using response surface methodology.
Methodology: To evaluate the drying behaviour, the drying experiment was designed using design expert software using a central composite design setting variable of drying temperature (60°C – 80°C), air velocity (0.5 m/s – 2 m/s), carboxyl methyl cellulose (0.5% - 2.5%), egg albumen (5% - 15%). Twenty-two runs of the experiment were performed using different levels of variables combinations. Based on the statistical tests performed, the best model that described each response was selected using a polynomial analysis.
Results: The optimum values for the drying conditions were: 77.42OC, 0.5m/s, 0.5% and 5% for temperature, air velocity, carboxyl methylcellulose and egg albumen respectively and the optimum values for the drying characteristics were: 25.07 KJ/mol, 1.7345E-10 m2/s, 29.019% (wet-basis). 0.742 g/cm3 and 540 minutes (approximately 9hrs) for activation energy, effective diffusivity, moisture content, foam density and the drying time respectively.
Conclusion: The study of the foam-mat drying of watermelon pulp revealed that the inlet temperature, air velocity, CMC and egg albumen has a significant effect on its drying characteristics.
Impact of Landform on Agricultural Land Use Pattern: A Case Study of Salda River Basin in Purulia District, West Bengal
Authors: Mahato Manoj Kumar , Jana N. C. 
Published: June 2019

The present study is concerned with the analysis of landform characteristics of Salda River basin and its impact on agriculture land use pattern. The Salda basin is one of the sub-basins of Subarnarekha River, with diversified landscape pattern in the western part of Purulia district in West Bengal. This basin is constituted by plateaus, plains with terraces, scarps, inselbergs, which is evolved under polycyclic evolution. The development of polycyclic geomorphic processes in this basin is typified by diverse morphology and drainage, which largely influence the land use pattern in this area. These diverse landscape patterns indicate the interaction of litho-tectonic-structural and various geomorphic processes with recent human intervention.
The main objectives of the present study are to analyse the landforms characteristics, correlate them with land use and identify problems as well as prospects of agricultural land utilization. The entire study is based on both primary and secondary data. Extensive field survey has been conducted to collect primary information regarding terrain characteristics, micro relief, slope characteristics, hydrological attributes, soil character, natural vegetation, environmental hazards. The Survey of India topographical sheets, meteorological data, agricultural production data, land use and land cover data have been collected for the analysis of geomorphological characteristics, land classification, and agricultural land use pattern.
This study reflects the typical land characteristics of the fringe area of Chhotanagpur plateau, where some typical geomorphic attributes control the productivity of the land and also controls the socio-economic conditions of the local people. The present authors have tried to examine the typical geomorphic attributes and their effects on present productivity of the land in a micro level study, where agriculture is the main source of income.
Impact of Base Station Site, Antenna Configuration and Power Control in LTE Network
Authors: Shekwonya Alhassan Shilo , Nnanna Lebe 
Published: June 2019

This study analyzed the impact of spatial distribution of APs/Base stations, antenna configuration and power control in a dense populated area like Owerri (Nigeria), using link planner network simulator and Google-Earth Software. High-effective data capacity at hotspots in conjunction with bandwidth and the predicted power at the receiver for LTE network are required to capture some number of users and provide high data rates over the Wi-Fi interface. The data rates are influenced by the terrain, which loses throughput due to delays, path loss and interference. The hotspot range which determines the number of users, that can associate, is limited by the power of the client and the access point. The variables that affect link performance, such as: band, region, equipment, antenna, height, terrain and obstructions towards providing enhanced capacity and coverage are measured by the link planner. The characteristics like gain, beam, width and frequency, for evaluation of results in terms of coverage and capacity for different antenna configurations, receive-Power, terrain, bandwidth and distances are also observed respectively. The results show that pathloss increases or decreases with these factors between nodes. The strategy to place the transmitter in the highest position has also proven better performance for implementation of the LTE system and its long run operation.
Application of Frequent, Spaced Multiple‐choice Questions as an Educational Tool in the Pediatric Emergency Department
Authors: Rustici Matthew J. , Wang Vincent J. , Dorney Kate E. , Nagler Joshua , Jamil Madati P. , Ziegler Patricia , Roosevelt Genie 
Published: June 2019

AbstractObjectivesThe objective was to assess the feasibility of using spaced multiple‐choice questions (MCQs) to teach residents during their pediatric emergency department (PED) rotation and determine whether this teaching improves knowledge retention about pediatric rashes.MethodsResidents rotating in the PED from four sites were randomized to four groups: pretest and intervention, pretest and no intervention, no pretest and intervention, and no pretest and no intervention. Residents in intervention groups were automatically e‐mailed quizlets with two MCQs every other day over 4 weeks (20 questions total) via an automated e‐mail service with answers e‐mailed 2 days later. Retention of knowledge was assessed 70 days after enrollment with a posttest of 20 unique, content‐matched questions.ResultsBetween August 2015 and November 2016, a total 234 residents were enrolled. The completion rate of individual quizlets ranged from 93% on the first and 76% on the 10th quizlet. Sixty‐six residents (55%) completed all 10 quizlets. One‐hundred seventy‐three residents (74%) completed the posttest. There was no difference in posttest scores between residents who received a pretest (61.0% ± 14.5%) and those who did not (64.6% ± 14.0%; mean difference = –3.7, 95% confidence interval [CI] = –8.0 to 0. 6) nor between residents who received the intervention (64.5% ± 13.3%) and those who did not receive the intervention (61.2% ± 15.2%; mean difference = 3.2, 95% CI = –1.1 to 7.5). For those who received a pretest, scores improved from the pretest to the posttest (46.4% vs. 60.1%, respectively; 95% CI = 9.7 to 19.5).ConclusionProviding spaced MCQs every other day to residents rotating through the PED is a feasible teaching tool with a high participation rate. There was no difference in posttest scores regardless of pretest or intervention. Repeated exposure to the same MCQs and an increase in the number of questions sent to residents may increase the impact of this educational strategy.