bluuebunny/crossref_metadata_2025_split huggingface dataset:
The INFLUENCE OF COUNTRY-OF-ORIGIN AND BRAND IMAGE ON PURCHASE INTENTION OF OPPO SMARTPHONE WITH PERCEIVED QUALITY AS INTERVENING VARIABLES
Authors: Setyo Aji Wibowo  , Mohamad Rizan  , Ika Febrilia  
Published: July 2021

The purpose of this study was to examine the effect of country-of-origin and brand image on purchase intention through perceived quality as a variable intervening. The approach used in this research is a quantitative approach and data collection methods using survey method. Respondents in this study were students of the State University of Jakarta who had or are currently using Oppo smartphone. Where, in this study, 216 respondents were obtained from various faculties at the State University of Jakarta. The processed data is then used to test seven hypotheses using Structural Equation Modeling (SEM). The results of this study are: first, country-of-origin has a positive and significant effect on perceived quality; second, brand image has a positive and significant effect on perceived quality; third, country-of-origin has no significant effect on purchase intention; the fourth, brand image has no significant effect on purchase intention; fifth, perceived quality has a positive and significant effect on purchase intention; sixth, perceived quality can be a mediating variable on the relationship between country-of-origin and purchase intention; seventh, perception quality can be a mediator variable on the relationship between brand image and purchase intention.
Keywords: Country-of-Origin, Brand Image, Perceived Quality, Purchase Intention, Oppo Smartphone
THE INFLUENCE OF EMPLOYEE ENGAGEMENT AND JOB SATISFACTION ON ORGANIZATIONAL CITIZENSHIP BEHAVIOR AT PT. RIZKI ASA BUANA
Authors: Azzam Imaduddin al azzam , Widya Parimita  , Christian Wiradendi Wolor  
Published: July 2021

The objectives of this study are: 1) To find out the description of work engagement, job satisfaction and Organizational Citizenship Behavior (OCB) for employees of PT. Rizki Asa Buana on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152. 2) To determine the effect of Work Engagement on Organizational Citizenship Behavior (OCB) on employees of PT. Rizki Asa Buana on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152. 3) To determine the effect of Job Satisfaction on Organizational Citizenship Behavior (OCB) on employees of PT. Rizki Asa Buana on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152. 4) To find out how much the contribution of Job Engagement and Job Satisfaction to Organizational Citizenship Behavior (OCB) for employees of PT. Rizki Asa Buana on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152. This research was conducted on 135 employees of PT. Rizki Asa Buana on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152. The data collection technique used survey and interview methods, namely by interviewing employees one by one and distributing questionnaires which were then processed using the SPSS program. This research uses descriptive and explanatory analysis. The results obtained from the regression show that there is a positive and significant influence between Work Engagement on Organizational Citizenship Behavior and a positive and significant influence between Job Satisfaction on Organizational Citizenship Behavior and the research model of Job Engagement and Job Satisfaction can predict Organizational Citizenship Behavior in Pt. Rizki Asa Buana which is on Jl. Manggul jaya no.9 (base 4) cikiwul, bantar gebang. Bekasi 17152 with a value of Fcount> Ftable (62.091> 2.70) and significance (0.000 <0.05).
Keyword: Employee Engagement, Job Satisfaction, Organizational Citizenship Behavior (OCB).
THE EFFECT OF E-SERVICE QUALITY AND PERCEIVED PRICE FAIRNESS ON CUSTOMER LOYALTY WHICH CUSTOMER SATISFACTION AS INTERVENING STUDY ON ONLINE SHOPPING SITE IN INDONESIA
Authors: Olivia Citra Octaviani  , Mohamad Rizan  , Agung Kresnamurti Rivai P  
Published: July 2021

This study examines the effect of e-service quality and perceived price fairness on customer loyalty with the intervening role of customers’ satisfaction in the online shopping site in Indonesia. The research method uses a quantitative research design with a survey model. The sample used in this study is Lazada consumers which consists of five large cities in Indonesia (Jakarta, Bogor, Depok, Tanggerang, and Bekasi City) and have done online shopping site at Lazada at least once in the last six months. The object of this research were the 200 customer respondents who had made purchases on the largest online shopping site platform of Indonesia, Lazada. Data analysis was done by using SPSS and Structural Equation Modeling (SEM). The results show that: first, the e-service quality and perceived price fairness affect customer satisfaction positively. Second, there is a mediating effect of customer satisfaction on the relationship between e-service quality and perceived price fairness on customer loyalty. Third, e-service quality and perceived price fairness directly affect customer loyalty positively but insignificantly. The result implies that the role of customer satisfaction is significant in creating loyalty. In the online shopping site a good quality and perception about price could positively influence customers but not necessarily form loyalty.
Students’ Destructive Behavior Towards The Teacher in The Teaching and Learning Process
Authors: Muhlis Achmad , Holis Muhammad , Sebgag Saliha , Wardi Moh. 
Published: July 2021

Abstract: This study analyzes the model, factors, and alternative solutions to students’ destructive behavior towards teachers in teaching-learning. It took place at Madrasah Tsanawiyah Negeri in Madura as immoral acts that violate the norms and values of social life by students to their teachers. It was qualitative research with a descriptive approach. The subjects of this study were representatives of MTsN teachers in Madura, namely MTsN 1 Sumenep, Pamekasan, MTsN 3 Pamekasan, MTsN 1 Sampang, and MTsN 1 Bangkalan. The research data was taken by the method of observation, documentation, and interviews. The results showed that destructive behavior models in destructive verbal behavior, destructive behavior in the form of physical and mental destructive behavior. Furthermore, the causes of students’ destructive behavior towards teachers in learning at Madrasah Tsanawiyah Negeri in Madura were internal and external factors, including the social status of students being higher than their teachers. Students thought they have more intelligence and knowledge than their teachers. Therefore, the teachers did the home visits, parenting, and parental involvement, and educational sanctions to overcome it. Abstrak: Penelitian ini bertujuan untuk menganalisis tentang model, faktor penyebab, serta solusi alternatif perilaku destruktif murid terhadap guru dalam pembelajaran pada Madrasah Tsanawiyah Negeri di Madura, sebagai tindakan amoral yang melanggar norma dan tatanan nilai kehidupan sosial masyarakat yang dilakukan oleh murid kepada gurunya. Jenis penelitian ini adalah penelitian kualitatif dengan pendekatan deskriptif, Subyek penelitian ini adalah keterwakilan dari Guru MTsN yang ada di Madura yaitu MTsN 1 Sumenep, Pamekasan, MTsN 3 Pamekasan, MTsN 1 Sampang, and MTsN 1 Bangkalan. Data penelitian diambil dengan metode observasi, dokumentasi dan wawancara. Hasil penelitian menunjukkan bahwa: pertama, model perilaku destruktif berupa prilaku destruktif verbal, perilaku destruktif fisik, dan perilaku destruktif mental. Kedua, Faktor penyebab perilaku destruktif murid terhadap guru dalam pembelajaran pada Madrasah Tsanawiyah Negeri di Madura karena faktor internal dan eksternal, diantaranya status sosial murid lebih tinggi dari gurunya, Murid merasa memiliki kecerdasan dan pengetahuan yang lebih dari gurunya. Ketiga, Cara mengatasi perilaku destruktif murid terhadap guru Pembinaan, Keteladanan dan Keterlibatan Orang tua “Home Visit”, dan pemberian sanksi edukasi pada siswa.
A New Way of Managing Drilling Required Bridging Old Divides
Authors: Rassenfoss Stephen 
Published: August 2021

Drilling a well by the book has its downsides.
A major downside of these plans in a PDF book format is they “do not include all the information needed to drill a well.”
For those doing the work, they have the added downside of “not being formatted to match the real-time workflow.”
And the plans are a one-way form of communication. “The pre-spud meeting might be the first time the driller is exposed to that well program,” said Matt Isbell, senior drilling engineering advisor for Hess who presented an alternative to that system at the 2021 IADC/SPE International Drilling Conference and Exhibition (SPE 204050).
The paper coauthored by Hess, Nabors, and Halliburton described a process to replace the book with instructions and information delivered on a screen as needed while drilling. The goal was to provide a common view of the plan and the information needed to build a well for the driller and other parties working on the rig or remotely.
The new digital system streamlined a process that included 20 separate documents using various templates plus multiple file-sharing sites and emails.
“As the pace and complexity increases, how do we better manage this as a single system,” said Isbell. His response to the rhetorical question: “Why not just email files back and forth?” was “We believe we have reached the point where we cannot just send information back and forth in time to efficiently drill the well.”
In addition to offering a step-by-step version of the plan, this resource offers a range of instructions and resources—from the well geometry and potential hazards to best practices and instructions on automated procedures.
It replaces the book which was never a good problem-solving tool.
“If you wanted to find out anything afterward, you had to troll though a 100-page document,” said Moray Laing, director of digital value well construction engineering for Halliburton. The paper coauthor remembers those books when he was working offshore many years ago.
Halliburton helped address the technical challenge with a system it has been working on for 3 years, which is also being used by Aker, BP, and Maersk, who are working on a system for remote operating centers to manage offshore operations.
Other companies, such as Schlumberger and drilling advisors Corva, are working on new ways to deliver drilling instructions which incorporate the drilling plan in the displays.
What was different, and difficult, about the Hess-led effort was the collaboration to create a unified plan for the display.
“The goal was a system pulling it all together, integrating a series of steps,” Laing said.
He was referring to what he described as a complex well-construction plan based on Hess’ design that would be executed by Nabors.
The digital well plan required Hess and Nabors to agree on how the work should be done and how that should be communicated to those building the plan.
When the partners began meeting to figure out how to do that, however, they discovered some very basic differences such as differing definitions of the word “activity.”
Best Practices for Avoiding Erosion in Annular Fracturing
Authors: Feder Judy 
Published: August 2021

This article, written by JPT Technology Editor Judy Feder, contains highlights of paper SPE 204417, “Avoiding Erosion: Best Practices for Coiled Tubing Annular Fracturing Operations,” by Kaveh Yekta, SPE, and Jamie Fenwick, SPE, Essential Energy Services, and Kevin Elliott, SPE, NOV, et al., prepared for the 2021 SPE/ICoTA Virtual Well Intervention Conference, 22–25 March. The paper has not been peer reviewed.
The onset of erosion of coiled tubing (CT) strings may be difficult to predict in annular fracturing operations. The complete paper describes a methodology of verifying that CT strings have not been subject to erosion caused by annular fracturing operations. An exploration of pumping rates used on these strings in operations also provides field-tested practical guidelines for avoiding erosion when performing annular fracturing jobs.

Inspection
A CT string may be exposed to erosion in the outer surface during CT annular fracturing operations. The critical parameters that may influence the magnitude of erosion include fracturing pump rate, sand concentration, fluid rheology, wellbore geometry, and the grade of CT string. One measurable parameter to examine the string’s suitability is the wall thickness for each section. The CT strings discussed in the complete paper were sent for inspection to learn about the effect of the fracturing treatment. A series of nondestructive tests was conducted pre- and post-operation to evaluate the readiness of strings for subsequent operations. The complete paper includes two graphs related to the results of these tests.

Materials
The API 5ST specification requires using eddy current (EC) inspection for CT. With respect to API 5ST, quenched and tempered tubing had not been addressed at the time of this paper’s submission, so it is not clear whether the CT manufacturers employ EC techniques after quenching and tempering. However, it is expected that all tubing will be subject to EC inspection at least before any quenching and tempering operations.
Inspection methodology and equipment consistency is important to establish a baseline inspection necessary for subsequent comparisons. In the case of the CT strings used in this study, all were subject to EC inspection at tubing manufacturing and then subsequently inspected by an outside, third-party vendor using magnetic flux leakage (MFL) technology when spooling the strings on the unit. No known third-party EC vendors can inspect string lengths of CT, so MFL inspection is the only available solution. Photographs of CT inspections taken at the manufacturing facility and the service and distribution point are included in the paper.
Several commercial third-party inspection companies operate in North America, where this work was performed. Provided that the inspection can begin by identifying features in the calibration standard (often a through-drilled hole), the selection of inspection methodology is primarily a matter of preference for the service company and operator.
Assessing Bypassed Hydrocarbons
Authors: Oifoghe Stanley , Alarcon Nora , Grigoletto Lucrecia 
Published: August 2021

Abstract
Hydrocarbons are bypassed in known fields. This is due to reservoir heterogeneities, complex lithology, and limitations of existing technology.
This paper seeks to identify the scenarios of bypassed hydrocarbons, and to highlight how advances in reservoir characterization techniques have improved assessment of bypassed hydrocarbons.
The present case study is an evaluation well drilled on the continental shelf, off the West African Coastline. The targeted thin-bedded reservoir sands are of Cenomanian age.
Some technologies for assessing bypassed hydrocarbon include Gamma Ray Spectralog and Thin Bed Analysis. NMR is important for accurate reservoir characterization of thinly bedded reservoirs.
The measured NMR porosity was 15pu, which is 42% of the actual porosity. Using the measured values gave a permeability of 5.3mD as against the actual permeability of 234mD.
The novel model presented in this paper increased the porosity by 58% and the permeability by 4315%.
Production and Performance Evaluation of Biodetergents as an Alternative to Conventional Drilling Detergent
Authors: Azuokwu Augustine Azubike , Yerima Yakubu , Azike Rowland Ugochukwu 
Published: August 2021

Abstract
Drilling detergents are among the chemical compounds that are increasingly being used in many varieties of drilling fluids. They are aqueous blend of surface-active agents that reduces the surface tension of water-based drilling fluids, reduces the sticking tendency of water-sensitive shale cuttings and aid cuttings removal; leading to cleaner hole, faster penetration rates and lower drilling pressure.
Due to the increase in environmental issues associated with the disposal of drilling detergent presently used, drilling companies are exploring options of using environmentally friendly, degradable and renewable drilling detergents.
In this study, biodetergents were produced from non-edible seed oils (Ricinus communis oil and Azadirachta Indica oil). The biodetergents and a commercial drilling detergent used in the Niger Delta field were analysed for a number of standard properties required for good drilling detergents. Drilling muds formulated with these detergents were also analysed for a number of standard mud properties.
Physicochemical properties analyses showed that biodetergents met the required specification of good drilling detergents. The physicochemical properties of the biodetergents were also comparable to that of commercial drilling detergent. BOD values obtained showed that the biodetergents could easily be broken or biodegraded than the commercial drilling detergent. Toxicity test on Penaeus Monodon showed that biodetergents are more environmentally friendly than the commercial drilling detergent. Drilling mud properties analyses further showed that synthesized biodetergents can be used as an alternative to conventional drilling detergent.
Evaluation of plasmatic extracellular vesicles by size
Authors: Cantone Laura , Hoxha Mirjam , Favero Chiara , Ferrari Luca , Bollati Valentina 
Published: August 2021

Abstract
Extracellular vesicles (EVs) play a key role in many physiological and pathological processes [1]. EVs are a heterogeneous group of membrane-confined particles including endosome-derived exosomes and plasma membrane-originated microvesicles. The expanding field of extracellular vesicle research needs reproducible and accurate methods to characterize EVs [2]. EV profiling can be challenging due to the small size and heterogeneity. This protocol aims to provide a method to isolate EVs and facilitate high-precision particle quantitation by Nanoparticle Tracking Analysis (NTA)[3, 4]. NTA is commonly used to determine EV concentration and diameter [5, 6]. The protocol here described refers to the isolation of EVs from blood-plasma samples by using ultracentrifugation and then quantification and sizing of EVs with NTA by NanoSight NS300 system (Malvern Panalytical Ltd., Malvern, UK) provided with a syringe pump module enabling analysis in constant flow for improved sample statistics.
A movement monitoring system for assessing restricted rodents' movements during social interaction tests
Authors: Netser Shai , Bizer Alexander , Wagner Shlomo 
Published: August 2021

Abstract
Social interactions between rodents is commonly evaluated using setups that enable restricted interactions between two rodents. However, such interactions are most often evaluated only for the animal defined as subject, but not for the social stimuli, which are usually located in a specific compartment. In most cases, behavioral quantification is done using a single video camera that allows visualizing the subject, but not the stimuli. To assess stimuli behavior in such experiments, we constructed a movement-monitoring system, comprising an array of piezoelectric sensors located at the floor of a small triangular chamber to which the social stimulus is allocated. The system and quantification methodology described in the following protocol, together with a camera recorded simultaneously, enabled us to simultaneously evaluate the movements of one or two social stimuli and the subject's investigatory behavior correlated with it.
Autofluorescence imaging for human pluripotent stem cell differentiation into cardiomyocytes
Authors: Qian Tongcheng , Heaster Tiffany M. , Skala Melissa C. 
Published: August 2021

Abstract
Human pluripotent stem cell (hPSC)-derived cardiomyocytes provide a promising regenerative cell therapy for cardiovascular patients and an important model system to accelerate drug discovery. However, cost-effective and time-efficient platforms must be developed to evaluate the quality of hPSC-derived cardiomyocytes during biomanufacturing. Here, we develop a non-invasive label-free live cell imaging platform to predict the efficiency of hPSC differentiation into cardiomyocytes. Autofluorescence imaging of metabolic co-enzymes is performed under varying differentiation conditions (cell density, concentration of Wnt signaling activator) across three hPSC lines.
Service Function Chain Placement in Distributed Scenarios: a Systematic Review
Authors: Santos Guto Leoni , Bezerra Diego de Freitas , Rocha Élisson da Silva , Ferreira Leylane , Moreira André , Gonçalves Glauco , Marquezini Maria Valéria , Recse Ákos , Mehta Amardeep , Kelner Judith , Sadok Djamel , Endo Patricia Takako 
Published: July 2021

Abstract
The network function virtualization (NFV) paradigm is an emerging technology that provides network flexibility by allowing the allocation of network functions over commodity hardware, like legacy servers in an IT infrastructure. In comparison with traditional network functions, implemented by dedicated hardware, the use of NFV reduces the operating and capital expenses and improves service deployment. In some scenarios, a complete network service can be composed of several functions, following a specific order, known as a service function chain (SFC). SFC placement is a complex task, already proved to be NP-hard. Moreover, in highly distributed scenarios, the network performance can also be impacted by other factors, such as traffic oscillations and high delays. Therefore, a given SFC placement strategy must be carefully developed to meet the network operator service constraints. In this paper, we present a systematic review of SFC placement advances in distributed scenarios. Differently from the current literature, we examine works over the last 10 years which addressed this problem while focusing on distributed scenarios. We then discuss the main scenarios where SFC placement has been deployed, as well as the several techniques used to create the placement strategies. We also present the main goals considered to create SFC placement strategies and highlight the metrics used to evaluate them.
Development of an Automated System for Adaptive Post-Weld Treatment and Quality Inspection of Linear Welds
Authors: Mikkelstrup Anders Faarbæk , Kristiansen Morten , Kristiansen Ewa 
Published: August 2021

Abstract
High-frequency mechanical impact (HFMI) treatment is a well-documented post-weld treatment to improve the fatigue life of welds. Treatment of the weld toe must be performed by a skilled operator due to the curved and inconsistent nature of the weld toe to ensure an acceptable quality. However, the process is characterised by noise and vibrations; hence, manual treatment should be avoided for extended periods of time. This work proposes an automated system for applying robotised 3D scanning to perform post-weld treatment and quality inspection of linear welds. A 3D scan of the weld is applied to locally determine the gradient and curvature across the weld surface to locate the weld toe. Based on the weld toe position, an adaptive robotic treatment trajectory is generated that accurately follows the curvature of the weld toe and adapts tool orientation to the weld profile. The 3D scan is reiterated after the treatment, and the surface gradient and curvature are further applied to extract the quantitative measures of the treatment, such as groove radius, weld toe deviation, and indentation depth and width. The adaptive robotic treatment is compared experimentally to manual and linear robotic treatment. This is done by treating 600 mm weld toe of each treatment type and evaluating the quantitative measures using the developed system. The results showed that the developed system reduced the overall treatment variance by respectively 26.6 % and 31.9 %. Additionally, a mean weld toe deviation of 0.09 mm was achieved; thus, improving process stability yet minimising human involvement.