bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrofacies Characterization of an Iraqi Carbonate Reservoir
Authors: Abdulhadi Abdulateef Dahlia , Zarzor Ahmed , S. AL Jawad Mohammed 
Published: July 2023

Predicting peterophysical parameters and doing accurate geological modeling which are an active research area in petroleum industry cannot be done accurately unless the reservoir formations are classified into sub-groups. Also, getting core samples from all wells and characterize them by geologists are very expensive way; therefore, we used the Electro-Facies characterization which is a simple and cost-effective approach to classify one of Iraqi heterogeneous carbonate reservoirs using commonly available well logs.
The main goal of this work is to identify the optimum E-Facies units based on principal components analysis (PCA) and model based cluster analysis(MCA) depending on available well logs data for four wells from an Iraqi carbonate oil field. The optimum E-Facies units came from comparing them with geologist classification units for these four wells. Also, we conclude that the value of permeability is not important to get the optimum E-Facies units.
Several runs have been tried each with different number of units using the Electro-Facies approach. The results of the techniques show very good match of the tops for various units with the actual ones. This application also shows the power and versatility of electrofacies characterization in improving reservoir descriptions in complex carbonate reservoirs.
Performance Evaluation of Three Phase Spray Direct Contact Heat Exchanger
Authors: A. Jassim Najim , A. Abdulkhaleq Fatimah 
Published: July 2023

The present investigation deals with experimental study of three-phase direct-contact heat exchanger, for water-Freon R11 system, where water is the continuous phase (liquid) and Freon R11 (liquid-gas) is the dispersed phase. The test section consisted of a cylindrical Perspex column with inner diameter 8cm and 1.2m long, in which, water was to be confined. Liquid Freon R11 drops were injected into the hot water filled column, through a special design of distributors at the bottom of the column. The liquid Freon R11 drops rose on their way up and evaporated into two-phase bubbles at atmospheric pressure. The study was devoted to express the effect of process variables such as column height, Freon R11 mass flow rate and initial temperature of water on the average percentage holdup, heat transfer rate, volumetric heat transfer coefficient and effectiveness.
The obtained experimental results showed that the average percentage holdup increased with increasing in the process variables. The heat transfer rate increased clearly with increasing in mass flow rate of Freon R11 while it increased very little when column height and initial temperature of water increased, it increased two times when increase the mass flow rate from 1.8 to 5.4 kg/hr. The volumetric heat transfer coefficient was found to decrease with increasing in column height and initial temperature of water, while it was increased with increasing in mass flow rate of Freon R11. The effectiveness was found to increase (maximum 90%) with increasing in column height and decreasing in the mass flow rate of Freon R11 and initial temperature of water. A statistical analysis was performed to get general correlations for the average percentage holdup, heat transfer rate, volumetric heat transfer coefficient and effectiveness as a function of the studied parameters.
Systematic review and meta-analysis of predictive factors for spontaneous regression in lumbar disc herniation
Authors: Rashed Sami , Vassiliou Anna , Starup-Hansen Joachim , Tsang Kevin 
Published: July 2023

OBJECTIVE
Relatively little evidence exists on predictive factors for the spontaneous regression of lumbar disc herniation (LDH), although it is a well-documented phenomenon. Therefore, current care is not optimized to identify those who would benefit from early surgery versus those who could avoid surgical risks and pursue nonsurgical therapy. In this study, the authors aimed to analyze and summarize all literature to date on predictive factors for spontaneous LDH regression as well as suggest future research strategies to aid in the decision-making for this cohort.

METHODS
A literature search was conducted of the Cochrane, Embase, and MEDLINE databases for articles that described LDH in terms of the North American Spine Society task force definitions: bulging, protruded, extruded, and sequestered disc morphologies. All articles described a nonsurgical primary symptomatic LDH cohort with at least two MR images to assess regression. Those with concomitant spinal disease were excluded. The primary outcome was to assess the probability of disc regression for each disc morphology, with a secondary analysis for any other predictive factors identified. The authors synthesized their results with the only previous review (examining articles published before March 2014) to comprehensively describe the literature. A qualitative analysis of the wider literature was also performed for those studies with differing definitions of LDH but meeting all remaining inclusion criteria.

RESULTS
Sixteen articles describing 360 cases of LDH were identified. Participants tended to be younger and male and presented with radiculopathy and L4–5 or L5–S1 LDH. The mean time to follow-up imaging was 11.5 months. The probabilities of spontaneous regression with bulging, protruded, extruded, and sequestered discs were 13.3%, 52.5%, 70.4%, and 93.0%, respectively (χ2 = 126.01, p < 0.001). Extruded and sequestered discs were also significantly more likely to completely regress than smaller morphologies. Other predictors of regression were larger baseline herniation volume (1260.16 vs 1006.71 mm3, p < 0.002), transligamentous herniation (χ2 = 13.321, p < 0.001), and higher Komori types (χ2 = 14.5132, p < 0.001). The authors also found similar trends in qualitative data as well as confirmed that symptom improvement was associated with disc regression.

CONCLUSIONS
This study shows further evidence of the influence of disc morphology on predicting LDH regression as well as provides the first meta-analysis of data indicating additional predictive factors. Further investigation of predictive factors for early (< 6 months) LDH regression is suggested to optimize clinical use.
Pengaruh Proses Rekrutmen Dan Seleksi Terhadap Kinerja Karyawan Pada PT. Angkasa Pura 1 (Persero) Bandara Minang Kabau
Authors: Givan Sujadi Dimas , Yanti Novi 
Published: July 2023

Abstract: This study aims to determine (1) whether the recruitment process affects the performance of employees. (2) whether the selection affects the performance of employees. 3) whether the recruitment and selection process affect employees performance at PT. Angkasa Pura I (Persero) Minangkabau International Airport. The sample used is 86 permanent employees of PT Angkasa Pura I (Persero). This research data uses primary data obtained from the results of distributing questionnaires. Data analysis used multiple linear regression analysis, hypothesis t test and F test. The results of the hypothesis test analysis showed that 1) The recruitment process has a positive and significant effect on the performance of employees at PT. Angkasa Pura I (Persero) Minangkabau International Airport. 2) Selection has a positive and significant effect on employee performance at PT. Angkasa Pura I (Persero) Minangkabau International Airport. 3) The process of recruitment and selection have a significant effect together on the performance of employees at PT. Angkasa Pura I (Persero) Minangkabau International Airport. Contribution of the influence of the recruitment and selection process to the performance of employees of PT. Angkasa Pura 1 (Persero) amounted to 44.6% while 55.4% was influenced by other variables such as reward and punishment, training, leadership and others.
Abstrak: Penelitian ini mempunyai tujuan yaitu mengetahui (1) apakah proses rekrutmen memengaruhi kinerja karyawan. (2) apakah seleksi memengaruhi kinerja karyawan. 3) apakah proses rekrutmen dan seleksi memengaruhi kinerja karyawan pada PT. Angkasa Pura I (Persero) Bandara Internasional Minangkabau. Sampel yang dipergunakan yaitu 86 karyawan tetap pada PT Angkasa Pura I (Persero). Data penelitian ini menggunakan data primer yang diperoleh dari hasil penyebaran kuesioner. Analisis data menggunakan analisis regresi linear berganda, uji hipotesis t dan uji F. Hasil analisis uji hipotesis menunjukkan bahwa 1) Proses rekrutmen positif dan signifikan memengaruhi kinerja karyawan di PT. Angkasa Pura I (Persero) Bandara Internasional Minangkabau. 2) Seleksi positif dan signifikan memengaruhi kinerja karyawan di PT. Angkasa Pura I (Persero) Bandara Internasional Minangkabau. 3) Proses rekrutmen dan seleksi secara bersama-sama memengaruhi kinerja karyawan pada PT. Angkasa Pura I (Persero) Bandara Internasional Minangkabau. Kontribusi pengaruh proses rekrutmen dan seleksi terhadap kinerja karyawan PT. Angkasa Pura 1 (Persero) adalah 44,6% sisanya 55,4% adalah kontribusi faktor lainnya seperti reward dan punishment, pelatihan, kepemimpinan dan lain lain.
Pengaruh Kualitas Pelayanan Terhadap Kepuasan Pelanggan (Siswa/I) dalam Mengikuti Kursus di Lembaga Bimbingan Belajar Ganesha Operation Rimbo Data, Bandar Buat, Padang
Authors: Gafi Nofrima , Bakkareng Bakkareng , Ratu Firdaus Tifani 
Published: July 2023

Abstract: This study aims to analyze and determine the effect of service quality on customer satisfaction (students) in participating in courses at the Ganesha Operation Rimbo Data tutoring institute, Bandar Create, Padang. The data collection technique used was a questionnaire. Methods of data analysis in this study using descriptive analysis, simple linear regression analysis, the coefficient of determination, and testing the hypothesis t-test. The results of this study indicate that the service quality variable has a significant effect on customer satisfaction where the calculated t value of the service quality variable is 3.338 which is greater than the t table value of 2.02269. So t count > t table and the calculated sig value obtained is 0.002 <0.05 so Ho is rejected Ha is accepted.
Abstrak: Penelitian ini bertujuan untuk menganalisa dan mengetahui Pengaruh Kualitas Pelayanan Terhadap Kepuasan Pelanggan (Siswa/i) Dalam Mengikuti Kursus Di Lembaga Bimbingan Belajar Ganesha Operation Rimbo Data, Bandar Buat, Padang. Teknik pengumpulan data yang digunakan adalah kuisioner. Metode analisis data dalam penelitian ini menggunakan analisis deskriptif, analisis regresi linear sederhana, koefisien determinasi, dan pengujian hipotesis uji t. Hasil penelitian ini menunjukkan bahwa variabel kualitas pelayanan berpengaruh signifikan terhadap kepuasan pelanggan dimana didapati nilai t hitung dari variabel kualitas pelayanan adalah sebesar 3.338 yang nilainya lebih besar dari nilai t tabel sebesar 2.02269. Sehingga t hitung > t tabel dan nilai sig perhitungan yang diperoleh adalah sebesar 0,002 < 0,05 jadi Ho ditolak Ha diterima.
Pengaruh Semangat Kerja Terhadap Prestasi Kerja Personil Polsek Kuranji
Authors: Maliza Nofia , Haryati Rice , Yanti Novi 
Published: July 2023

Abstract: The research objective was to determine the effect of work enthusiasm on the work performance of Kuranji police personnel. Data collection methods are Field Research and Library Research. Types and sources of data are primary data and secondary data. The population in this study were personnel at the Kuranji Police, totaling 57 people and a sample of 56 people. The analytical method uses a simple linear regression analysis. The results of the study are: (1) There is a positive and significant influence of work enthusiasm on the Work Performance of the Kuranji Police Personnel, (2) The most dominant indicator for each variable is: (a) In the work performance variable the most dominant indicator is leadership with the respondent's achievement level of 78.69%, (b) In the variable of morale the most dominant indicator is work productivity with the respondent's achievement level of 77.74%.
Abstrak: Tujuan penelitian adalah untuk mengetahui Pengaruh Semangat Kerja Terhadap Prestasi Kerja Personil Polsek Kuranji. Metode pengumpulan data adalah Penelitian Lapangan (Field Research) dan Penelitian Kepustakaan (Library Research). Jenis dan sumber data adalah data primer dan data sekunder. Populasi dalam penelitian ini adalah Personel pada Polsek Kuranji yang berjumlah 57 orang dan sampel sebanyak 56 orang. Metode analisis menggunakan analisis regresi linear sederhana. Hasil penelitian adalah: (1) Terdapat pengaruh positif dan signifikan semangat kerja terhadap Prestasi Kerja Personil Polsek Kuranji, (2) Indikator Paling dominan pada masing-masing variabel adalah: (a) Pada variabel prestasi kerja indicator paling dominan adalah kepemimpinan dengan tingkat capaian responden sebesar 78,69 %, (b) Pada variabel semangat kerja indicator paling dominan adalah produktivitas kerja dengan tingkat capaian responden sebesar 77,74 %.
Pengaruh Disiplin dan Lingkungan Kerja Terhadap Kinerja Karyawan Hotel Ranah Bundo Padang
Authors: Viona Dian Rhagita , Begawati Nova 
Published: July 2023

Abstract: This study aims to (1) determine which indicators are most dominant in work discipline, work environment, and employee performance at the Ranah Bundo Padang hotel; (2) determine whether work discipline and work environment affect the performance of Hotel Ranah Bundo Padang employees, either partially or simultaneously. Data analysis using multiple linear regression analysis, t-test, and F-test. The results of regression and hypothesis testing show that 1) The dominant indicator of work discipline is the level of vigilance. The dominant indicator of the work environment is the lighting indicator in the workspace. Meanwhile, the dominant indicator of employee performance is the quality of work. 2) Partially work discipline has a significant effect on employee performance. Simultaneously, discipline and the work environment have a significant positive effect on employee performance at Hotel Ranah Bundo Padang.
Abstrak: Penelitian ini bertujuan untuk (1) mengetahui indikator-indikator manakah yang paling dominan pada disiplin kerja, lingkungan kerja, dan kinerja karyawan hotel Ranah Bundo Padang; (2) mengetahui apakah disiplin kerja dan lingkungan kerja berpengaruh terhadap kinerja karyawan Hotel Ranah Bundo Padang, baik secara parsial, maupun simultan. Analisis data menggunakan analisis regresi linear berganda, uji t, uji F. Hasil regresi dan uji hipotesis menunjukkan bahwa 1) Indikator dominan dari disiplin kerja adalah indikator tingkat kewaspadaan. Indikator dominan dari lingkungan kerja adalah indikator pencahayaan di ruang kerja. Sedangkan indikator dominan dari kinerja karyawan adalah indikator kualitas kerja. 2) Secara parsial disiplin kerja berpengaruh signifikan positif terhadap kinerja karyawan. Secara simultan, disiplin dan lingkungan kerja berpengaruh signifikan positif terhadap kinerja karyawan pada Hotel Ranah Bundo Padang.
Pengaruh Perencanaan Karir, Lingkungan Kerja, dan Stres Kerja Terhadap Prestasi Kerja Karyawan Pada PT. Kereta Api Indonesia Divre II Sumbar
Authors: Mariandi Reski , Sutarjo Agus , Rizka Hadya  
Published: July 2023

Abstract: PT. Kereta Api Indonesia (Persero) Regional Division II West Sumatra is one of the State-Owned Enterprises (BUMN) engaged in rail transportation services in Indonesia. The analytical method uses multiple linear regression analysis. The results of the study are: (1) career planning partially has a positive and significant effect on the performance of PT. Indonesian Railroad Drive II West Sumatra. (2) The work environment partially has a positive and significant effect on the performance of employees of PT. Indonesian Railroad Divre II West Sumatra. (3) Partial work stress has no positive or significant effect on the performance of employees at PT. Indonesian Railroad Divre II West Sumatra. (4) the variables of career planning, work environment, and work stress have a positive and significant impact on the performance of employees of PT. Indonesian Railroad Divre II West Sumatra.
Abstrak: PT. Kereta Api Indonesia (Persero) Divisi Regional II Sumbar merupakan salah satu Badan Usaha Milik Negara (BUMN) yang bergerak dalam bidang jasa transportasi kereta api di Indonesia. Metode analisis menggunakan analisis regresi linear berganda. Hasil penelitian adalah : (1) perencanaan karir secara parsial berpengaruh positif dan signifikan terhadap kinerja pada karyawan PT. Kereta Api Indonesia Drive II Sumbar. (2) Lingkungan kerja secara parsial berpengaruh positif dan signifikan terhadap kinerja pada karyawan PT. Kereta Api Indonesia Divre II Sumbar. (3) Stres kerja secara parsial tidak berpengaruh positif dan signifikan terhadap kinerja pada karyawan PT. Kereta Api Indonesia Divre II Sumbar. (4) Secara bersama-sama variabel perencanaan karir, lingkungan kerja, dan stres kerja berpengaruh positif dan signifikan bersama-sama terhadap kinerja karyawan PT. Kereta Api Indonesia Divre II Sumbar.
Pengaruh Kualitas Pelayanan Jasa PT. Angkasa Pura II (Persero) Terhadap Kepuasan Penumpang Penerbangan Domestik di Bandara Internasional Minangkabu
Authors: Hajar Siti , Salfadri  , Tifani Ratu Firdaus  
Published: July 2023

Abstract: This study aims to examine the influence of the service quality of PT. Angkasa Pura II (Persero) on domestic flight passenger satisfaction at Minangkabu International Airport. This research was conducted on 100 domestic passengers. The data analysis method used is simple linear regression. Test the hypothesis by using the T-statistic test to prove the effectiveness of the independent variables on the dependent variable partially or individually. The results of this study found that service quality had a positive and significant effect on domestic flight passenger satisfaction at Minangkabau International Airport.
Abstrak: Penelitian ini bertujuan untuk menguji pengaruh kualitas pelayanan jasa PT. Angkasa Pura II (Persero) terhadap kepuasan penumpang penerbangan domestik di Bandara Internasional Minangkabu. Penelitian ini dilakukan terhadap 100 penumpang domestic. Metode analisa data yang digunakan adalah regresi linear sederhana. Uji hipotesis dengan menggunakan uji T- statistik untuk membuktikan pengaruh variabel bebas terhadap variabel terikat secara parsial atau individu. Hasil penelitian ini menemukan bahwa kualitas pelayanan berpengaruh positif dan signifikan terhadap kepuasan penumpang penerbangan domestik di Bandara Internasional Minangkabau.
Pengaruh Karakteristik Informasi Sistem Akuntansi Manajemen (SAM), Desentralisasi dan Ketidakpastian Lingkungan Terhadap Kinerja Manajerial pada Kantor Polda Sumatera Barat
Authors: Marda Hayati Reffi , Yulistia Yulistia 
Published: July 2023

Abstract: This study discusses the influence of management accounting information systems (SAM), decentralization and environmental uncertainty on managerial performance in the Polda of West Sumatra. The results of the analysis of this study indicate that the Management Accounting System (SAM) information variable has a positive effect on the managerial performance of the West Sumatra Regional Police employees with a significant value of α (0.000 <0.05). The decentralization variable has a positive effect on the managerial performance of West Sumatra Regional Police employees α (0.001 <0.05). The environmental uncertainty variable has a positive effect on the managerial performance of North Sumatra Regional Police employees with a significance value of α (0.000 <0.05). The management accounting system (SAM) information variable, decentralization and environmental uncertainty have a significant effect on managerial performance in the West Sumatra Regional Police with a significance value of 0.000, which means 0.000 <0.05. Keywords: Characteristics of Management Accounting Information Systems (SAM), Decentralization, Environmental Uncertainty, Managerial Performance, West Sumatra Regional Police.
Abstrak: Penelitian ini membahas pengaruh pengaruh sistem informasi akuntansi manajemen (SAM), desentralisasi dan ketidakpastian lingkungan terhadap kinerja manajerial di Polda Sumbar. Hasil analisis penelitian ini menunjukkan bahwa variabel informasi Sistem Akuntansi Manajemen (SAM) berpengaruh positif terhadap kinerja manajerial pegawai Polda Sumbar dengan nilai signifikan α (0,000 < 0,05). Variabel desentralisasi berpengaruh positif terhadap kinerja manajerial pegawai Polda Sumbar α (0,001 < 0,05). Variabel ketidakpastian lingkungan berpengaruh positif terhadap kinerja manajerial pegawai Polda Sumut dengan nilai signifikansi α (0,000 < 0,05). Variabel informasi sistem akuntansi manajemen (SAM), desentralisasi dan ketidakpastian lingkungan berpengaruh signifikan terhadap Kinerja Manajerial di Polda Sumbar dengan nilai signifikansi 0,000 yang berarti 0,000 < 0,05. Kata kunci: Karakteristik Sistem Informasi Akuntansi Manajemen (SAM), Desentralisasi, Ketidakpastian Lingkungan, Kinerja Manajerial, Polda Sumatera Barat.
Pengaruh Capital Intensity, Konservatisme Akuntansi Dan Corporate Social Responsibility Terhadap Penghindaran Pajak (Pada Perusahaan Manufaktur Yang Terdaftar Di BEI Periode 2016-2019)
Authors: Hasnita Tara , Bakareng Bakareng , Lady Silvera Dica 
Published: July 2023

Abstract: This study aims to determine whether Capital Intensity, Accounting Conservatism, Corporate Social Responsibility have a significant effect on tax avoidance in Manufacturing companies listed on the Indonesia Stock Exchange for the 2016-2019 period. Either partially or simultaneously. The type of data used in this study is quantitative data sourced from the financial statements of manufacturing companies listed on the Indonesia Stock Exchange totaling 179 companies. The results of this study indicate that partially capital intensity, accounting conservatism and corporate social responsibility have a significant effect on tax evasion. Meanwhile, simultaneously capital intensity, accounting conservatism and corporate social responsibility have a significant effect on tax avoidance.
Abstrak: Penelitian ini bertujuan untuk mengetahui apakah Capital Intensity, Konservatisme Akuntansi, Corporate Social Responsibility berpengaruh signifikan terhadap penghindaran pajak pada perusahaan Manufaktur Yang terdaftar di Bursa Efek Indonesia periode 2016-2019. Baik secara parsial maupun secara simultan. Jenis data yang digunakan dalam penelitian ini adalah data kuantitatif yang bersumber dari laporan keuangan perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia berjumlah 179 perusahaan. Hasil penelitian ini menunjukkan bahwa secara parsial capital intensity, konservatisme akuntansi dan corporate social responsibility berpengaruh signifikan terhadap penghindaran pajak. Sedangkan secara simultan capital intensity, konservatisme akuntansi dan corporate social responsibility berpengaruh signifikan terhadap penghindaraan pajak.