bluuebunny/crossref_metadata_2025 huggingface dataset:
EXTRAORAL AND CBCT DENTAL EXPOSURES IN PORTUGAL
Authors: Trindade Hugo , Morais Inês , Moreira Abigail
Published: July 2020

Data from dental extraoral and cone beam computed tomography (CBCT) exposures in Portugal (2019) were gathered, and patient doses for standard adult exams were evaluated. In panoramic X-rays, 442 units (34% of the existing licensed units) were tested, with a third quartile value (PKA) of 82 mGy.cm2. For cephalometric radiography (88 units), the third quartile value (Ki) was 0.3 mGy for the posteroanterior projection and 0.2 mGy for lateral projection. In CBCT (69 units), the doses for the placement of an upper first molar implant were evaluated with a third quartile value (PKA) of 820 mGy.cm2. Due to the wide range of values (74–3687 mGy.cm2), the CBCT data were divided by FOV dimensions: for small FOV (average FOV of 7 ×8 cm), a value of 580 mGy.cm2 was obtained and for medium FOV (average FOV of 13 × 12 cm) a value of 1167 mGy.cm2. The number of annual panoramic X-rays made in Portugal was 208 per 1000 inhabitants, which is higher than the value for other countries.
DNA-BOT: a low-cost, automated DNA assembly platform for synthetic biology
Authors: Storch Marko , Haines Matthew C , Baldwin Geoff S
Published: July 2020

Multi-part DNA assembly is the physical starting point for many projects in Synthetic and Molecular Biology. The ability to explore a genetic design space by building extensive libraries of DNA constructs is essential for creating programmed biological systems. With multiple DNA assembly methods and standards adopted in the Synthetic Biology community, automation of the DNA assembly process is now receiving serious attention. Automation will enable larger builds using less researcher time, while increasing the accessible design space. However, these benefits currently incur high costs for both equipment and consumables. Here, we address this limitation by introducing low-cost DNA assembly with BASIC on OpenTrons (DNA-BOT). For this purpose, we developed an open-source software package and demonstrated the performance of DNA-BOT by simultaneously assembling 88 constructs composed of 10 genetic parts, evaluating the promoter, ribosome binding site and gene order design space for a three-gene operon. All 88 constructs were assembled with high accuracy, at a consumables cost of $1.50–$5.50 per construct. This illustrates the efficiency, accuracy and affordability of DNA-BOT, making it accessible for most labs and democratizing automated DNA assembly.
Time of Birth and the Risk of Severe Unexpected Complications in Term Singleton Neonates
Authors: Gould Jeffrey B. , Abreo Anisha M. , Chang Shen-Chih , Main Elliott K.
Published: July 2020

OBJECTIVE:

To assess whether there is a relationship between evening, night, and weekend births and severe unexpected neonatal morbidity in low-risk term singleton births.

METHODS:

We conducted a population-based, cross-sectional analysis. Severe unexpected neonatal morbidity as defined by the National Quality Forum specification 0716 was derived from linked birth certificate and hospital discharge summaries for 1,048,957 low-risk singleton term Californian births during 2011 through 2013. The association between the nursing shift (7 am–3 pm vs 3–11 pm and 11 pm –7 am) and weekday compared with weekend birth and the risk of severe unexpected neonatal morbidity was estimated using mixed effects logistic regression models.

RESULTS:

Severe unexpected neonatal morbidity was higher among births during the 3–11 pm evening shift (2.1%) and the 11 pm–7 am night shift (2.1%), compared with those during the 7 am–3 pm day shift (1.8%). The adjusted odds ratios (ORs) were 1.10 (95% CI 1.06–1.13) for the evening shift and 1.15 (1.11–1.19) for the night shift. The adjusted ORs of severe unexpected neonatal morbidity were increased only on Sunday, as compared with other days (adjusted OR 1.08, 95% CI 1.02–1.14). When our analysis was by perinatal region, the increase was seen in four of the nine perinatal regions.

CONCLUSION:

After risk adjustment, the risk of severe unexpected morbidity in the low-risk singleton California birth cohort was significantly increased on Sundays and births during evening and night shifts. These elevations were detected in only four of California's nine perinatal regions. Further analysis at the individual hospital level is warranted.
Prediction Model for Vaginal Birth After Induction of Labor in Women With Hypertensive Disorders of Pregnancy
Authors: Beninati Michael J. , Ramos Sebastian Z. , Danilack Valery A. , Has Phinnara , Savitz David A. , Werner Erika F.
Published: July 2020

OBJECTIVE:

To identify characteristics associated with vaginal delivery compared with cesarean delivery after labor induction among women with hypertensive disorders of pregnancy and to develop and validate a prediction model to assist in clinical care.

METHODS:

We studied a retrospective cohort of women with singleton pregnancies who had hypertensive disorders of pregnancy and who underwent induction of labor at 34 weeks of gestation or more from January 1, 2002, to March 31, 2013. Exclusion criteria included spontaneous labor, prelabor cesarean delivery, and known fetal anomalies. The study cohort was randomly divided into two groups; 70% of pregnancies were used to identify characteristics associated with vaginal delivery and develop a prediction model, and 30% were used to internally validate the model. Candidate predictors were limited to those associated with cesarean delivery and were available to a practitioner at time of induction. Stepwise backward logistic regression was used to build the most parsimonious model predicting cesarean delivery. Hosmer-Lemeshow test was used to assess goodness-of-fit. Model discrimination was evaluated using the concordance index and displayed through the area under the receiver operating characteristic curve (AUC).

RESULTS:

Of the 1,357 women meeting study criteria, 974 (71.8%) had a vaginal delivery. The final model consisted of eight variables: maternal age, body mass index, gestational age, intrapartum magnesium sulfate for seizure prophylaxis, need for cervical ripening, prior cesarean delivery and cervical dilation, and effacement. Model calibration and discrimination were satisfactory with Hosmer-Lemeshow test P=.35 and with a 95% CI, an AUC of 0.76 (0.73–0.79). Among those with predicted probability of cesarean delivery of 20% or less, 89.5% had a vaginal delivery. Internal validation demonstrated similar discriminatory ability.

CONCLUSION:

Using information available before labor induction, and contingent on future external validation, our model can help women better understand their likelihood of vaginal delivery success when undergoing induction of labor for hypertensive disorders of pregnancy.
Endoscopic Optical Coherence Tomography for Evaluation of Success of Tympanoplasty
Authors: Morgenstern Joseph , Schindler Martin , Kirsten Lars , Golde Jonas , Bornitz Matthias , Kemper Max , Koch Edmund , Zahnert Thomas , Neudert Marcus
Published: July 2020

Objective:

After tympanoplasty, it is often challenging to differentiate between different causes of a remaining air bone gap (ABG). Optical coherence tomography (OCT) offers a new approach for combined morphologic and functional measurements of the tympanic membrane and adjacent parts of the middle ear. Thus, it provides valuable diagnostic information in patients with a reduced sound transfer after middle ear surgery.

Patient and intervention:

A patient with history of tympanoplasty and a persistent ABG was investigated with endoscopic OCT before revision surgery.

Main Outcome Measures:

The oscillation behavior and the thickness of the reconstructed tympanic membrane was determined. The oscillation amplitudes of the inserted prosthesis were compared to a finite element model simulation and to the clinical findings and the audiometric data of the patient.

Results:

OCT measurements showed a reduced oscillation amplitude of the prosthesis while revealing an aerated middle ear and good coupling of the prosthesis. Transfer loss measured by OCT showed a similar progression as the ABG measured by pure-tone audiometry with a mean divergence of 4.45 dB.

Conclusion:

Endoscopic OCT is a promising tool for the evaluation of tympanoplasty outcome. It supports established otologic diagnostics and can help differentiating between different causes of conductional hearing loss.
Effects of Kinect exergames on balance training among community older adults
Authors: Yang Chi-Min , Chen Hsieh Jun (Scott) , Chen Yi-Chen , Yang Shu-Yu , Lin Hao-Chiang Koong
Published: July 2020

Background:

Recent years have witnessed wide applications of exergames to balance training among the older adults. However, research concerning balance training with the use of Kinect for Xbox has remained scarce. While previous studies have shown the positive effects of exergames on improving balance and preventing falling among the older adults, there has been a paucity of empirical evidence supporting the superiority of Kinect exercise to conventional exercise over balance training among the older adults. Therefore, this study aimed to compare the feasibility, safety, and effectiveness of Kinect exercise against conventional exercise over balance training among the community older adults.

Method:

A total of 20 participants were randomly assigned to the Kinect Exercise Group (N = 10) or the Conventional Exercise Group (N = 10) for a 5-week balance training (45 minutes a time, 2 times a week). Assessor blinding was employed to assess the participants’ performance before and after the treatment, including 30-Second Chair Stand Test (30-sec CST), Timed Up and Go (TUG), Functional Reach Test (FRT), and One-Leg Stance Test (OLST) respectively with eyes open and closed. Subjective feeling of the intensity of pain and side effects were recorded throughout the investigation period. Nonparametric statistics was used for data analysis.

Results:

Within-group comparison between the pre-test and post-test indicated that significant differences existed in all of the 5 tests (30-sec CST, TUG, FRT, OLST with eyes open, and OLST with eyes closed) in the Kinect exercise group. To the Conventional exercise group, however, significant differences were only observed in 30-sec CST, FRT and OLST with eyes open. With regard to between-group comparison, significant differences were only found in FRT.

Conclusion:

Such results indicated that both treatments were helpful in improving the participants’ balance performance, that Kinect exercise was more effective in terms of overall balance ability, and that Kinect exercise was particularly beneficial to functional reach enhancement in comparison with traditional exercise. Kinect exercise could be a feasible, safe, and effective alternative for dynamic balance training among older adults.
Cold Debriefings after In-hospital Cardiac Arrest in an International Pediatric Resuscitation Quality Improvement Collaborative
Authors: Wolfe Heather A. , Wenger Jesse , Sutton Robert , Seshadri Roopa , Niles Dana E. , Nadkarni Vinay , Duval-Arnould Jordan , Sen Anita I. , Cheng Adam
Published: July 2020

Introduction:

Clinical event debriefing functions to identify optimal and suboptimal performance to improve future performance. “Cold” debriefing (CD), or debriefing performed more than 1 day after an event, was reported to improve patient survival in a single institution. We sought to describe the frequency and content of CD across multiple pediatric centers.

Methods:

Mixed-methods, a retrospective review of prospectively collected in-hospital cardiac arrest (IHCA) data, and a supplemental survey of 18 international institutions in the Pediatric Resuscitation Quality (pediRES-Q) collaborative. Data from 283 IHCA events reported between February 2016 and April 2018 were analyzed. We used a Plus/Delta framework to collect debriefing content and performed a qualitative analysis utilizing a modified Team Emergency Assessment Measurement Framework. Univariate and regression models were applied, accounting for clustering by site.

Results:

CD occurred in 33% (93/283) of IHCA events. Median time to debriefing was 26 days [IQR 11, 41] with a median duration of 60 minutes [20, 60]. Attendance was variable across sites (profession, number per debriefing): physicians 12 [IQR 4, 20], nurses 1 [1, 6], respiratory therapists 0 [0, 1], and administrators 1 [0, 1]. “Plus” comments reported per event were most commonly clinical standards 47% (44/93), cooperation 29% (27/93), and communication 17% (16/93). “Delta” comments were in similar categories: clinical standards 44% (41/93), cooperation 26% (24/93), and communication 14% (13/93).

Conclusions:

CDs were performed after 33% of cardiac arrests in this multicenter pediatric IHCA collaborative. The majority of plus and delta comments could be categorized as clinical standards, cooperation and communication.
Implementation of a Pharmacokinetic Model for Inhaled Anesthetics Into a Software-Based Anesthesia Workstation for LLEAP-Compatible Simulators
Authors: Casañ Miguel , García-Calatayud Rosario , Robles Daniel , Abril Cristina
Published: July 2020

Introduction

Laerdal Learning Application (LLEAP)-compatible simulation manikins lack some specific functions that can be useful in anesthesia simulation scenarios. Our objective was to develop a software-based anesthesia workstation with a pharmacokinetic model for inhaled anesthetics for this simulation platform.

Methods

A Windows Presentation Foundation application that emulates an Aespire anesthesia workstation was created. The Gas Man simulator (Med Man Simulations) was used as a reference for the pharmacokinetic model. A concordance analysis was made between the results obtained by our model and the reference, in open and semiclosed circuit, in both 70- and 140-kg patients.

Results

The mean of the differences between the compartments was less than 0.01 vol% in all circumstances. The percentile rank P2.5 to P97.5 was less than 0.5 vol% in all compartments, except for the open circuit compartment.

Conclusions

No significant differences were found between both pharmacokinetic models. We consider that our software-based anesthesia workstation can be useful for simulating mechanical ventilation and halogenated administration in different scenarios.
A Wi-Fi live streaming Centrifuge Force Microscope for benchtop single-molecule experiments
Authors: Punnoose Jibin Abraham , Hayden Andrew , Zhou Lifeng , Halvorsen Ken
Published: July 2020

The ability to apply controlled forces to individual molecules has been revolutionary in shaping our understanding of biophysics in areas as diverse as dynamic bond strength, biological motor operation, and DNA replication. However, the methodology to perform single-molecule experiments has been and remains relatively inaccessible due to cost and complexity. In 2010, we introduced the Centrifuge Force Microscope (CFM) as a new platform for accessible and high-throughput single-molecule experimentation. The CFM consists of a rotating microscope where prescribed centrifugal forces can be applied to microsphere-tethered biomolecules. In this work, we develop and demonstrate a next-generation Wi-Fi CFM that offers unprecedented ease of use and flexibility in design. The modular CFM unit fits within a standard benchtop centrifuge and connects by Wi-Fi to a external computer for live control and streaming at near gigabit speeds. The use of commercial wireless hardware allows for flexibility in programming and provides a streamlined upgrade path as Wi-Fi technology improves. To facilitate ease of use, detailed build and setup instructions are provided, as well as LabVIEW™ based control software and MATLAB®based analysis software. We demonstrate the analysis of force-dependent dissociation of short DNA duplexes of 7, 8, and 9 bp using the instrument. We showcase the sensitivity of the approach by resolving distinct dissociation kinetic rates for a 7 bp duplex where one G-C base pair is mutated to an A-T base pair.

Significance

The ability to apply mechanical forces to individual molecules has provided unprecedented insight into many areas of biology. Centrifugal force provides a way to increase the throughput and to decrease the cost and complexity of single-molecule experiments compared to other approaches. In this work, we develop and demonstrate a new user-friendly Centrifuge Force Microscope (CFM) that enables live-streaming of high-throughput single-molecule experiments in a benchtop centrifuge. We achieved near gigabit bandwidth with standard Wi-Fi components, and we provide detailed design instructions and software to facilitate use by other labs. We demonstrate the instrument for sensitive kinetic measurements that are capable of resolving the difference between two DNA duplexes that differ by a single G-C to A-T substitution.
Single-nucleus RNA-seq reveals dysregulation of striatal cell identity due to Huntington’s disease mutations
Authors: Malaiya Sonia , Cortes-Gutierrez Marcia , Herb Brian R. , Coffey Sydney R. , Legg Samuel R.W. , Cantle Jeffrey P. , Colantuoni Carlo , Carroll Jeffrey B. , Ament Seth A.
Published: July 2020

Huntington’s disease (HD) is a dominantly inherited neurodegenerative disorder caused by a trinucleotide expansion in exon 1 of the huntingtin (Htt) gene. Cell death in HD occurs primarily in striatal medium spiny neurons (MSNs), but the involvement of specific MSN subtypes and of other striatal cell types remains poorly understood. To gain insight into cell type-specific disease processes, we studied the nuclear transcriptomes of 4,524 cells from the striatum of a genetically precise knock-in mouse model of the HD mutation,HttQ175/+, and from wildtype controls. We used 14-15-month-old mice, a time point roughly equivalent to an early stage of symptomatic human disease. Cell type distributions indicated selective loss of D2 MSNs and increased microglia in agedHttQ175/+mice. Thousands of differentially expressed genes were distributed across most striatal cell types, including transcriptional changes in glial populations that are not apparent from RNA-seq of bulk tissue. Reconstruction of cell typespecific transcriptional networks revealed a striking pattern of bidirectional dysregulation for many cell type-specific genes. Typically, these genes were repressed in their primary cell type, yet de-repressed in other striatal cell types. Integration with existing epigenomic and transcriptomic data suggest that partial loss-of-function of the Polycomb Repressive Complex 2 (PRC2) may underlie many of these transcriptional changes, leading to deficits in the maintenance of cell identity across virtually all cell types in the adult striatum.
The maintenance of polygenic sex determination depends on the dominance of fitness effects which are predictive of the role of sexual antagonism
Authors: Meisel Richard P.
Published: July 2020

In species with polygenic sex determination, multiple male- and female-determining loci on different proto-sex chromosomes segregate as polymorphisms within populations. The extent to which these polymorphisms are at stable equilibria is not yet resolved. Previous work demonstrated that polygenic sex determination is most likely to be maintained as a stable polymorphism when the proto-sex chromosomes have opposite (sexually antagonistic) fitness effects in males and females. However, these models usually consider polygenic sex determination systems with only two proto-sex chromosomes, or they do not broadly consider the dominance of the alleles under selection. To address these shortcomings, I used forward population genetic simulations to identify selection pressures that can maintain polygenic sex determination under different dominance scenarios in a system with more than two proto-sex chromosomes (modeled after the house fly). I found that overdominant fitness effects of male-determining proto-Y chromosomes are more likely to maintain polygenic sex determination than dominant, recessive, or additive fitness effects. The overdominant fitness effects that maintain polygenic sex determination tend to have proto-Y chromosomes with sexually antagonstic effects (male-beneficial and female-detrimental). In contrast, dominant fitness effects that maintain polygenic sex determination tend to have sexually antagonistic multi-chromosomal genotypes, but the individual proto-sex chromosomes do not have sexually antagonstic effects. These results demonstrate that sexual antagonism can be an emergent property of the multi-chromosome genotype without individual sexually antagonistic chromosomes. My results further illustrate how the dominance of fitness effects has consequences for both the likelihood that polygenic sex determination will be maintained as well as the role sexually antagonistic selection is expected to play in maintaining the polymorphism.
Structural basis for helicase-polymerase coupling in the SARS-CoV-2 replication-transcription complex
Authors: Chen James , Malone Brandon , Llewellyn Eliza , Grasso Michael , Shelton Patrick M. M. , Olinares Paul Dominic B. , Maruthi Kashyap , Eng Ed , Vatandaslar Hasan , Chait Brian T. , Kapoor Tarun , Darst Seth A. , Campbell Elizabeth A.
Published: July 2020

SARS-CoV-2 is the causative agent of the 2019-2020 pandemic. The SARS-CoV-2 genome is replicated-transcribed by the RNA-dependent RNA polymerase holoenzyme (subunits nsp7/nsp82/nsp12) along with a cast of accessory factors. One of these factors is the nsp13 helicase. Both the holo-RdRp and nsp13 are essential for viral replication and are targets for treating the disease COVID-19. Here we present cryo-electron microscopic structures of the SARS-CoV-2 holo-RdRp with an RNA template-product in complex with two molecules of the nsp13 helicase. The Nidovirus-order-specific N-terminal domains of each nsp13 interact with the N-terminal extension of each copy of nsp8. One nsp13 also contacts the nsp12-thumb. The structure places the nucleic acid-binding ATPase domains of the helicase directly in front of the replicating-transcribing holo-RdRp, constraining models for nsp13 function. We also observe ADP-Mg2+bound in the nsp12 N-terminal nidovirus RdRp-associated nucleotidyltransferase domain, detailing a new pocket for anti-viral therapeutic development.
Humanistic leadership in Thailand: a mix of indigenous and global aspects using a cross-cultural perspective
Authors: Vora Davina , Kainzbauer Astrid
Published: July 2020

Purpose

To explore how leadership behavior in Thailand relates to humanistic leadership through indigenous and cross-cultural lenses.

Design/methodology/approach

Analogically based and semi-structured interviews were used. The primary focus was on factors associated with expatriate success in leading Thais in a Thai context. As such, the main sample included 24 expatriates. Two local Thai leaders were also interviewed. Qualitative interviews were analyzed inductively using NVivo.

Findings

Five interrelated themes emerged from the data: guiding, bridging, emotionally supporting, socializing and indirectly communicating. These themes relate to Asian holistic thinking, Thai culture and humanistic management. Evidence for humanistic leadership was found, albeit in culture-specific ways.

Research limitations/implications

Researchers may benefit from studying local, indigenous leadership practices and determining if and how they fit etic concepts such as humanistic leadership. Limitations of this study include a small sample from only one country.

Practical implications

To be successful, leaders should engage in humanistic leadership practices that fit the Thai context. Human resource departments may wish to focus their talent recruitment, selection and development on these behaviors.

Originality/value

This paper adds to the nascent literature on humanistic leadership by providing an indigenous as well as cross-cultural lens to understanding humanistic leadership in the context of Thailand.
Cross-cultural comparison of mental health between Japanese and Dutch workers: relationships with mental health shame, self-compassion, work engagement and motivation
Authors: Kotera Yasuhiro , Van Laethem Michelle , Ohshima Remi
Published: July 2020

Purpose

The primary purpose of this descriptive study was to compare the levels of, and relationships among mental health problems, mental health shame, self-compassion, work engagement and work motivation between workers in Japan (collectivistic and success-driven culture) and the Netherlands (individualistic and quality-oriented culture).

Design/methodology/approach

A cross-sectional design, where convenience samples of 165 Japanese and 160 Dutch workers completed self-report measures about mental health problems, shame, self-compassion, engagement and motivation, was used. Welch t-tests, correlation and regression analyses were conducted to compare (1) the levels of these variables, (2) relationships among these variables and (3) predictors of mental health problems, between the two groups.

Findings

Dutch workers had higher levels of mental health problems, work engagement and intrinsic motivation, and lower levels of shame and amotivation than Japanese workers. Mental health problems were associated with shame in both samples. Mental health problems were negatively predicted by self-compassion in Japanese, and by work engagement in Dutch employees.

Originality/value

The novelty of this study relates to exploring differences in work mental health between those two culturally contrasting countries. Our findings highlight potential cultural differences such as survey responding (Japanese acquiescent responding vs Dutch self-enhancement) and cultural emphases (Japanese shame vs Dutch quality of life). Job crafting, mindfulness and enhancing ikigai (meaningfulness in life) may be helpful to protect mental health in these workers, relating to self-compassion and work engagement. Findings from this study would be particularly useful to employers, managers and staff in human resources who work with cross-cultural workforce.
Poverty trap in Mexico, 1992-2016
Authors: Loría Eduardo
Published: July 2020

Purpose

The paper aims to prove that between 1992 and 2016, people in poverty as a proportion of the total population has not been reduced. In particular, food poverty (FP) represented an average of 22%, despite the fact that gross domestic product (GDP) per capita and GDP, social development expenditure and food programme expenditure (both as GDP proportion) grew by 0.96%, 1.9%, 2.7% and −17.4% on an annual average, respectively.

Design/methodology/approach

There are non-linear relationships between economic growth and food poverty expenditure to reduce poverty. Three econometric models were estimated as follows: a linear model [ordinary least squares (OLS)] that addresses the capability of the economic growth to reduce FP (which detects a structural change in 2007) and three models of regime change (Markov–Switching Regression) that prove the existence of two different regimes.

Findings

The author proved that economic growth has lost the capability to reduce poverty and that there are decreasing effects of expenditure in addressing poverty since 2007. These results point out that Mexico is in a poverty trap and suggests that for the economy as for life and even more in the case of social (public) policies, more is not necessarily better than less. Therefore, the author suggests that the resources allocated in response to poverty may well have generated perverse incentives that yielded the opposite results.

Originality/value

There is no official measure of the public expenditure for poverty. Therefore, an accurate series was built to estimate the government effort and do the econometrics that proves the main hypothesis. This is another contribution.
Effects of operating conditions on cavitation induction of spiral groove liquid-film seal (SG-LFS)
Authors: Li Zhentao , Yin Xiaoli , Yue Jixiang , Liu Fuyu , Hao Muming , Ren Baojie
Published: July 2020

Purpose

The purpose of this paper is to study the effects of operating conditions including process coefficient, lubricant viscosity and cavitation pressure on the cavitation of spiral groove liquid-film seal (SG-LFS).

Design/methodology/approach

A mathematical model of SG-LFS is established based on the JFO boundary and a relative density is introduced. The universal governing equation after a coordinate transformation is discretized by the FVM method and solved by the Gauss-Seidel relaxation scheme.

Findings

The results indicate that the two-dimensional size of cavitation and cavitation degree are affected significantly by the process coefficient and lubricant viscosity but the effect of cavitation pressure can be ignored.

Originality/value

The effect mechanisms of operating conditions on the cavitation of SG-LFS are studied by the JFO boundary and cavitation degree characterized by a relative density. The results presented are helpful to perfect and deeply understand the cavitation mechanism of liquid-film seal.

Peer review

The peer review history for this article is available at:https://publons.com/publon/10.1108/ILT-03-2020-0083/
Spin-type forward motion mode based on double steering wheel parking AGV
Authors: Pan Ting , Yan Jiaqing , Zhou Shenyun , Cai Yingjie , Lu Congda
Published: July 2020

Purpose

The purpose of this paper is to propose the situation that the existing parking automated guided vehicle (AGV) has a single walking mode, a spin forward motion mode based on a dual steering wheel driven parking AGV. In this way, the AGV can complete the 180° spin of the AGV in the process of straight forward.

Design/methodology/approach

A spin forward kinematics model of the dual steering wheel AGV is established, and a motion controller of the dual steering wheel AGV is designed based on the principle of model predictive control to complete the path following the spin forward motion mode.

Findings

Computer simulations and laboratory tests were performed on this movement mode, which showed that the operation mode was feasible. It also verified that the mode can improve the handling efficiency, and also solved the problem that the parking space beside the wall could not be set and the site utilization was improved.

Research limitations/implications

The controller should be further improved to make the operation smoother and more accurate.

Practical implications

This mode has the applicability to the indoor logistics AGVs. In addition, it can improve the handling efficiency and also solved the problem that the storage space for goods beside the wall could not be set and the site utilization was improved.

Social implications

This method can solve the problem due to the increasing number of private cars and parking spaces are hard to find. It increases the number of parking spaces and improves the utilization rate of the site. In addition, it also saves people the time to find a parking space and reduces car exhaust emissions in the process. It follows the requirements of sustainable development.

Originality/value

The studies in this paper provide AGV with more ideas on the issue of improving handling efficiency and site utilization and also solves the problem of being unable to set parking spaces when parking against the wall. In addition, this model has applicability to indoor logistics AGV and plays the same role.
Social capital for knowledge management system of the creative industry
Authors: Mayasari Yanti , Chandra Teddy
Published: July 2020

Purpose

Th purpose of this paper is to represent the role of social capital for the knowledge management system (KMS) in the kind of literature which is related to the topics in the creative industry.

Design/methodology/approach

This paper uses conceptual and literature study with empirical quantitative and qualitative investigation to validate. As some literature states that KMS is an organizational process and tool for acquisition, conversion, application and protection of existing knowledge as a way to use, develop and manage it which comes from internal and external organizations.

Findings

Literature shows that for some organizations, knowledge is gained through research and development (R&D) of the internal organization. In contrast, the creative industry requires knowledge that is derived from social capital such as social environment and community. The social environment and community (social capital) will provide knowledge that is required for the existence of the creative industry in producing the creative product that may represent the social context in which the creative industry exists. This study uses a meta-analysis as a tool of analysis to classify previous research and studies regarding the roles of social capital for KMS in the creative industry that were used as the cornerstone of the research.

Originality/value

Studies in the creative industry previously show that knowledge is a collaboration of tacit knowledge and explicit knowledge which is gained from various the creative classes within the industry. As a renewable resource-based industry, creativity, skill and talent are resources that are used to be commercialized to gain wealth for not only big industries but also for micro, small and medium economies (UMKM) that mostly done by communities, to create employment through the exploitation of intellectual property. Therefore, the creative industry can be meant as a knowledge-based industry that requires the application of KMS in its operation.
Money laundering via underground currency exchange networks
Authors: Teichmann Fabian Maximilian , Falker Marie-Christin
Published: July 2020

Purpose

This paper aims to demonstrate how illicit funds are being laundered through underground currency exchange networks.

Design/methodology/approach

Sixty interviews with money launderers and compliance officers were conducted to identify methods relevant to current money laundering issues. Further, a quantitative survey of 200 compliance officers was administered.

Findings

The currency exchange method is highly suitable for money launderers with access to a criminal network. It may be used for placement or pre-placement. Evidently, the vast majority of compliance officers fail to recognize the utilization of this method in their daily business.

Research limitations/implications

Implications are based on the statements of 60 interviewees, comprising both alleged money launderers and compliance officers.

Practical implications

The study identified gaps in anti-money laundering mechanisms. The documentation of said inconsistencies aims to provide compliance officers, law enforcement agencies and legislators with useful insights into the minds of money launderers.

Originality/value

Whereas most prior literature focuses on money laundering prevention methods, how money launderers operate is not illustrated. This study comprehensively overviews the issue by interviewing not only compliance officers but also money launderers. Understanding how money launderers operate is essential to effectively prevent money laundering. In particular, compliance officers must be able to view money laundering from the criminal’s perspective to sufficiently combat the issue.
Impact of activity restrictions on risk taking of banks: does competition matter during crisis?
Authors: Noman Abu Hanifa Md. , Isa Che Ruhana , Mia Md Aslam , Sok-Gee Chan
Published: July 2020

Purpose

This study aims to examine the impact of activity restrictions in shaping the risk-taking behaviour of banks through the channel of competition in different economic conditions.

Design/methodology/approach

The authors use a dynamic panel regression method, particularly a two-step system generalised method of moments to address the risk-taking persistence of banks and endogeneity of activity restrictions and competition with banks’ risk-taking using financial freedom and property rights as instrumental variables. Activity restrictions are computed by constructing an index based on the survey results of Barth et al. (2001, 2006, 2008 and 2013a). Competition is measured by the Panzar–Rosse H-statistic and risk-taking behaviour are measured by non-performing loan ratio and lnZ-score. In the investigation process, the authors control bank characteristics – size, efficiency, ownership and loan composition and macroeconomic factors – gross domestic product growth and inflation, and use 2,527 bank-year observations from 180 commercial banks of Association of the Southeast Asian Nations-five countries over the 1990–2014 period.

Findings

This study finds that activity restrictions exacerbate the risk-taking behaviour of the banks leading to changes in the channel of competition because of the “risk-shifting effect” of competition. The finding is robust by considering the financial crisis and alternative specifications.

Research limitations/implications

This study contributes to bank literature and policy formulation regarding the effect of activity restrictions on the risk-taking behaviour of banks, which is an issue of concern amongst bank regulators, policymakers and academics, especially in the aftermath of the 2008–2009 global financial crisis.

Practical implications

Understanding how the competition plays a role in the relationship between activity restrictions and the risk-taking of banks in different economic situations.

Originality/value

This study provides new insight into the bank literature by investigating the moderating role of competition on activity restrictions and the risk-taking behaviour of banks in a different economic environment.
The battle of superheroes: the rise of the knowledge platform strategy in the movie industry
Authors: Trabucchi Daniel , Magistretti Stefano
Published: July 2020

Purpose

Over the past years – because of the huge impact of companies such as Airbnb and Uber – the concept of the platform became extremely popular in the business world. Still, the concept of the platform has been evolving for a long time in the management field, from internal platforms (like the famous case of Sony Walkman) to industry-wide platforms (like the case of computers with external software developers), up to transaction and two or multi-sided platforms (such as Airbnb and all the companies with a similar business model). Platforms are often considered disruptors in several industries, from accommodations to mobility to entertainment. Still, the disruptors in the creative world usually deal with the way in which they distribute content (Netflix or Spotify), rather than with the content itself. The purpose of this paper is to understand if and how platforms trategies can also be used in the creative industries.

Design/methodology/approach

This paper digs into the movie industry, studying the three most successful Superheroes sagas of the past two decades as follows: the Marvel Cinematic Universe (MCU), DC Comics and X-Men using a narrative approach. The three sagas are studied through network analysis to understand their “platform approach”.

Findings

The results show how platform strategies are relevant also in creative industries – defining the concept of “knowledge platform strategy” – and how they have a significant impact in terms of market performance. The MCU builds on a common knowledge through the various movies that enable the chance to rely on many of the platforms’ characteristics emerging from the literature.

Research limitations/implications

This research extends the concept of “platforms,” relying on the three kinds of platform defined in the managerial literature and introducing the “knowledge platform strategy” for creative industries. The main contribution is related to the extension of platforms in research fields where it has not been exploited. This opens up avenues for research both from a knowledge platform and creative industries perspectives.

Practical implications

Managers, working not only in creative industries but also in industries where a common knowledge basis may be leveraged to develop new products over time, may use the concept of “knowledge platform strategy” to rethink the new development process or knowledge management from a customer perspective.

Originality/value

This study explores a mature and relevant concept – the platforms – in a new filed, the creative industries using the case of Superheroes sagas, proposing a new perspective to explain the success of MCU while proposing a new platform strategy.
Can co-creation in extended reality technologies facilitate the design process?
Authors: El-Jarn Hatana , Southern Glen
Published: July 2020

Purpose

The purpose of this paper is to explore the benefits of co-creation/co-design using extended reality (XR) technologies during the initial stages of the design process. A review of the emerging co-creation tools within XR will be examined along with whether they offer the potential to improve the design process; this will also highlight the gaps on where further research is required.

Design/methodology/approach

The paper draws on professional and academic experiences of the authors in creative practices within the realm of XR technology, co-creation and co-design. In addition, a review of the current literature on emerging technologies and work-based learning will offer further insight on the themes covered.

Findings

To design, collaborate, iterate and amend with colleagues and peers in a virtual space gives a wide range of obvious benefits. Creative practitioners both in education and employment are working more collaboratively with the advancement of technology. However, there is a need to find a space where collaboration can also offer the opportunity for co-creation that improves the initial stages of the design process. This technology also offers solutions on the constraints of distance and ameliorates creative expression.

Research limitations/implications

There is an opportunity to test the ideas expressed in this paper empirically; this can be done through testing co-creation tools with professionals, work-based learners and students.

Originality/value

The paper will add to the existing literature on emerging technologies as a unique environment to improve co-create/co-design the visuals created during the fuzzy front end of the design process and offer a potential framework for future empirical work.
Geranium oil and anise oil inhibit brain cerebral cortex and hippocampus inflammation in depressed animal model
Authors: Koriem Khaled Mohamed Mohamed , Fadl Nevein Naim , El-Zayat Salwa Refat , Hosny Eman Nasr , Abbas El-Shamy Karima , Arbid Mahmoud Soliman , Morsy Fatma Adly , El-Azma Marwa Helmy
Published: July 2020

Purpose

The purpose of this paper is to check the geranium oil and anise oil effect to inhibit inflammation in brain cerebral cortex and hippocampus areas in depression.

Design/methodology/approach

Depression defined as psychiatric disease and chronic mild stress (CMS) model a well-known animal model of depression that represented major symptoms occurred in human depression. Geranium oil and anise oil selected for such a study to check their anti-inflammatory effect in brain tissues in depressed animal model.

Findings

The brain cerebral cortex and hippocampus neurotransmitters serotonin, dopamine, norepinephrine, gamma aminobutyric acid (GABA) and interleukin (IL)-10 significantly decreased (p < 0.001) while brain cerebral cortex and hippocampus IL-1ß, IL-6, tumor necrosis factor-alpha (TNF-α) and Ki-67 levels significantly increased (p < 0.001) in CMS rats compared to control. The oral intake of venlafaxine drug, anise oil and geranium oil significantly increased (p < 0.001) serotonin, dopamine, norepinephrine, GABA and IL-10 while significantly decreased (p < 0.001) IL-1ß, IL-6, TNF-α and Ki-67 levels to approach normal levels in brain cerebral cortex and hippocampus areas compared with CMS rats.

Originality/value

Antidepressants used in depression treatment but these drugs are either too expensive or had side effects. Folklore and complementary medicine used in different diseases treatment due to cheap and available source. Geranium oil and anise oil had anti-inflammatory effect in brain cerebral cortex and hippocampus areas in CMS rats.
Personalized cloud service review analysis based on modularized ontology
Authors: Ben-Abdallah Emna , Boukadi Khouloud , Hammami Mohamed , Karray Mohamed Hedi
Published: July 2020

Purpose

The purpose of this paper is to analyze cloud reviews according to the end-user context and requirements.

Design/methodology/approach

propose a comprehensive knowledge base composed of interconnected Web Ontology Language, namely, modular ontology for cloud service opinion analysis (SOPA). The SOPA knowledge base will be the basis of context-aware cloud service analysis using consumers' reviews. Moreover, the authors provide a framework to evaluate cloud services based on consumers' reviews opinions.

Findings

The findings show that there is a positive impact of personalizing the cloud service analysis by considering the reviewers' contexts in the performance of the framework. The authors also proved that the SOPA-based framework outperforms the available cloud review sites in term of precision, recall and F-measure.

Research limitations/implications

Limited information has been provided in the semantic web literature about the relationships between the different domains and the details on how that can be used to evaluate cloud service through consumer reviews and latent opinions. Furthermore, existing approaches are lacking lightweight and modular mechanisms which can be utilized to effectively exploit information existing in social media.

Practical implications

The SOPA-based framework facilitates the opinion based service evaluation through a large number of consumer's reviews and assists the end-users in analyzing services as per their requirements and their own context.

Originality/value

The SOPA ontology is capable of representing the content of a product/service as well as its related opinions, which are extracted from the customer's reviews written in a specific context. Furthermore, the SOPA-based framework facilitates the opinion based service evaluation through a large number of consumer's reviews and assists the end-users in analyzing services as per their requirements and their own context.
Social networks and health in later life: a state of the literature
Authors: Roth Adam R.
Published: July 2020

Late life is a period frequently marked by decline in personal health and heightened need for social support. Consequently, the social networks in which individuals are embedded assume an increasingly central role in the health and wellbeing of older adults. In the present article, I review the state of the literature on social networks and health in later life. By drawing on insights from the sociology of ageing and the life course, I address new developments and current challenges within the field. Chief among these developments and challenges is the recognition that the ageing process does not occur in a vacuum. Rather, individuals are consistently exposed to numerous changes to their social lives which have strong implications for current and future health outcomes. Upon highlighting the latest innovations within the field of networks and health, I conclude with useful directions for future research.