bluuebunny/crossref_metadata_2025_split huggingface dataset:
Profile reliability to improve recommendation in social-learning context
Authors: Zayani Corinne Amel , Ghorbel Leila , Amous Ikram , Mezghanni Manel , Péninou André , Sèdes Florence 
Published: October 2018

Purpose
Generally, the user requires customized information reflecting his/her current needs and interests that are stored in his/her profile. There are many sources which may provide beneficial information to enrich the user’s interests such as his/her social network for recommendation purposes. The proposed approach rests basically on predicting the reliability of the users’ profiles which may contain conflictual interests. The paper aims to discuss this issue.

Design/methodology/approach
This approach handles conflicts by detecting the reliability of neighbors’ profiles of a user. The authors consider that these profiles are dependent on one another as they may contain interests that are enriched from non-reliable profiles. The dependency relationship is determined between profiles, each of which contains interests that are structured based on k-means algorithm. This structure takes into consideration not only the evolutionary aspect of interests but also their semantic relationships.

Findings
The proposed approach was validated in a social-learning context as evaluations were conducted on learners who are members of Moodle e-learning system and Delicious social network. The quality of the created interest structure is assessed. Then, the result of the profile reliability is evaluated. The obtained results are satisfactory. These results could promote recommendation systems as the selection of interests that are considered of enrichment depends on the reliability of the profiles where they are stored.

Research limitations/implications
Some specific limitations are recorded. As the quality of the created interest structure would evolve in order to improve the profile reliability result. In addition, as Delicious is used as a main data source for the learner’s interest enrichment, it was necessary to obtain interests from other sources, such as e-recruitement systems.

Originality/value
This research is among the pioneer papers to combine the semantic as well as the hierarchical structure of interests and conflict resolution based on a profile reliability approach.
Detection and quantification of natural pigments extracted from callus of Echinocereus cinerascens
Authors: Elias Hashimah , Mat Taha Rosna , Hasbullah Nor Azlina , Othman Rashidi , Mahmad Noraini , Saleh Azani , Abdullah Sakinah 
Published: October 2018

Purpose
This paper aims to study the effect of different organic solvents on the extraction of pigments present in callus cultures of E. cinerascens.

Design/methodology/approach
Attempts have been made to extract pigments from callus cultures through tissue culture system as an alternative replacement for conventional plant cultivation as tissue culture provides unlimited supplies of plant samples. Callus of E. cinerascens was induced from stem explant cultured in Murashige and Skoog medium supplemented with combination of 0.5 mg/L 6-benzylaminopurine and 0.5 mg/L α-naphthaleneacetic acid maintained under photoperiod of 16 h light and 8 h dark. Fresh samples of the callus were harvested and dissolved in various types and concentrations of solvents such as 100 per cent acetone, 80 per cent acetone, 95 per cent ethanol, 100 per cent methanol and 90 per cent methanol. Each of the mixtures was directly centrifuged to get clear supernatant containing pigments of interest. The pigments were detected and subsequently quantified via two simple techniques, ultraviolet-visible (UV-Vis) spectrophotometer and thin layer chromatography (TLC).

Findings
UV-Vis spectrophotometer detected two families of pigments present in the callus cultures, namely, carotenoids (carotene and xanthophyll) and tetrapyrroles (chlorophyll a and b). Pigment contents in various solvent extractions were estimated using spectroscopic quantification equations established. Through TLC, spots were seen on the plates, and Rf values of each spots were assessed to indicate the possible existence of carotenoids and tetrapyrroles.

Originality/value
This preliminary study offers significant finding for further advance research related on natural pigments extracted from E. cinerascens that would provide profits in the future applications, especially in food industry, medicine, agriculture, etc.
Mechanical feasibility of ABS/HIPS-based multi-material structures primed by low-cost polymer printer
Authors: Singh Sunpreet , Singh Narinder , Gupta Munish , Prakash Chander , Singh Rupinder 
Published: October 2018

Purpose
The purpose of this paper is to fabricate acrylonitrile-butadiene-styrene (ABS)/high impact polystyrene (HIPS) based multi-material geometries using a low cost polymer printer. At the same time, efforts have been made to investigate the mechanical characteristics of the obtained prints and to perform the optimization using the Taguchi-Grey (TGRA) method.

Design/methodology/approach
Initially, the feedstock materials were in-house fabricated in the form of filament wires, workable with fused filament fabrication (FFF) technique, of 1.75 ± 0.1 mm diameter by using a single screw extruder. Multi-material structures were fabricated using variable parameters (such as: raster angles, layer height, fill density and solid layers) and the experimentation was conducted as per Taguchi L18 array. Mechanical responses obtained by performing tensile, impact and bending test were studied in response to input variables and ultimately optimized settings were obtained, for individual as well as multiple parameters). Scanning electron microscopy (SEM) analysis was performed to analyze the fractured surfaces.

Findings
The Signal/Noise (S/N) plots for the quality characteristics highlighted that selected input parameters significantly influenced the obtained values for tensile strength, impact strength and flexural strength. Micrographs of the fractured specimens showed the occurrence of brittle fracture with higher levels of perimeter, infill density and solid layers. The extent of delamination was also increased under the bending load and further increased by increasing solid layers.

Practical implications
The results of the study strongly advocated the utility of fabricated multi-materials structures in automotive, aerospace and other manufacturing industries.

Originality/value
This work represents the fabrication, testing and analysis of polymer-based multi-material structures for engineering applications.
A framework for big data driven process analysis and optimization for additive manufacturing
Authors: Majeed Arfan , Lv Jingxiang , Peng Tao 
Published: October 2018

PurposeThis paper aims to present an overall framework of big data-based analytics to optimize the production performance of additive manufacturing (AM) process.Design/methodology/approachFour components, namely, big data application, big data sensing and acquisition, big data processing and storage, model establishing, data mining and process optimization were presented to comprise the framework. Key technologies including the big data acquisition and integration, big data mining and knowledge sharing mechanism were developed for the big data analytics for AM.FindingsThe presented framework was demonstrated by an application scenario from a company of three-dimensional printing solutions. The results show that the proposed framework benefited customers, manufacturers, environment and even all aspects of manufacturing phase.Research limitations/implicationsThis study only proposed a framework, and did not include the realization of the algorithm for data analysis, such as association, classification and clustering.Practical implicationsThe proposed framework can be used to optimize the quality, energy consumption and production efficiency of the AM process.Originality/valueThis paper introduces the concept of big data in the field of AM. The proposed framework can be used to make better decisions based on the big data during manufacturing process.
Optimization of the driving waveform of a piezoelectric inkjet printhead based on a system dynamics model
Authors: Wang Kun , Xi Juntong 
Published: October 2018

Purpose
This paper aims to present an optimization method of the input driving signal of a piezoelectric inkjet printhead to improve droplet consistency and increase jetting frequency.

Design/methodology/approach
The optimization target is the transient pressure in the nozzle caused by the input driving signal, which directly generates the droplets. After demonstrating the linearity of the driving input and system pressure, an analytic model as a transfer function was developed, allowing calculation of the pressure vibration in the nozzle for an arbitrary input. Different patterns of input signal were parameterized and applied into the optimizing function, which represents the difference between the ideal and the actual pressure vibration. By determining the function minimum, the optimized parameters of the input signal were estimated.

Findings
Optimization results of different input patterns were compared and verified by the numerical model of the printhead, and it was revealed that the optimization method that combined the quenching pulse and an increased falling time interval was more effective than use of a single method.

Originality/value
After the process of optimization, a new type of input signal to the piezoelectric inkjet printhead was showed. By this method, the frequency of the printhead could be increased without losing consistency of droplets.
The impact of the US government policies on consumer perceptions of business ethical behavior
Authors: Tsalikis John , Seaton Bruce , Shepherd Philip L. , van Solt Michelle 
Published: October 2018

Purpose
The unethical behavior of businesses toward their customers is thought to contribute to a loss of trust and confidence in the integrity of American corporations. Distrust between the two parties in the marketplace inhibits business transactions. The business ethics index (BEI) was established to formally and continuously measure the consumer sentiments of the ethical behavior of American businesses. This paper aims to measure the effect of political affiliation on consumers’ ethical perceptions of businesses.

Design/methodology/approach
The BEI was originally developed as an indicator of consumers’ sentiments toward the ethicality of business practices. The current research uses the BEI once again to evaluate consumers’ perceptions of business ethics in the era of President Donald Trump and his administration. The BEI was therefore extended with the question: “Do you believe that because of the new president Donald Trump, businesses will behave: ‘more ethically’, ‘about the same’ or ‘more unethically’?”.

Findings
Data from 1,008 telephone interviews in the USA were used to calculate a BEI of 114.5, indicating an overall positive consumer sentiment toward the ethical behavior of business. Respondents’ political affiliation was found to significantly affect their perception of the ethical behavior of businesses.

Originality/value
This is an initial step in studying the connection between governmental policies and business ethics perception.
Offshoring experience and performance: the role of realized drivers and risk management
Authors: Haleem Fazli , Farooq Sami , Wæhrens Brian Vejrum , Boer Harry 
Published: October 2018

PurposeMany factors have been identified that may drive a firm’s decision to offshore production activities. The actual performance effects of offshoring, however, depend on the extent to which these drivers are realized. Furthermore, the question is how risk management helps mitigating the risk involved in offshoring ventures, thus leading to better performance outcomes. The purpose of this study is to investigate the extent to which realized offshoring drivers and risk management mediate the relationship between offshoring experience and firm performance.Design/methodology/approachData from the Global Operations Networks project, a cross-sectional survey administered in Denmark and Sweden, are used to test two hypotheses on the mediating role of realized offshoring drivers and risk management in the relationship between offshoring experience and firm performance. AMOS version 23 is used to perform the analyses.FindingsThe results demonstrate that realized offshoring drivers fully mediate the relationship between offshoring experience and firm performance. However, risk management does not mediate the relationship between offshoring experience and firm performance.Originality/valueThis study develops new theory on, and managerial insight into, the mediating role of realized offshoring drivers and risk management in the relationship between offshoring experience and firm performance.
Re‐employment of people with chronic stroke: A single‐centre retrospective study
Authors: Fukuzawa Itaru , Tokumaru Osamu , Eshima Nobuoki , Bacal Kira , Kitano Takaaki , Yokoi Isao 
Published: October 2018

Background/aimRe‐employment is the goal of rehabilitation for many patients after stroke. This study retrospectively examined previously employed stroke survivors who were unable to return to work at time of discharge from hospital and identified factors which were correlated with successful re‐employment following a rehabilitation programme involving occupational therapy at a support facility. Factors correlated with reactivation of drivers’ licence after stroke were also investigated.MethodsParticipants were 150 post‐stroke patients who were discharged from a support facility for persons with disabilities from April 2011 to March 2016. Data on patients’ sociodemographic information, activities of daily living, and physical functions had been recorded at the time of admission into the facility. Employment status was recorded at discharge. Data were collected retrospectively in July 2017 from the medical records. Logistic regression models were prepared to examine factors correlated with successful re‐employment and reactivation of drivers’ licence after occupational therapy.ResultsA stepwise logistic regression model revealed that the following four factors were significantly correlated with successful re‐employment: (i) the dressing‐lower body item in the Functional Independence Measure (P < 0.001), (ii) the grooming item in the Functional Independence Measure (P = 0.002), (iii) marital status (P = 0.007), and (iv) the problem‐solving item in the Functional Independence Measure (P = 0.028). Another stepwise logistic regression model revealed that the factors were significantly correlated with successful reactivation of drivers’ licence: (i) the problem‐solving item in the Functional Independence Measure (P = 0.002), (ii) the dressing‐lower body item in the Functional Independence Measure (P = 0.011) and (iii) the residence area (P = 0.038).ConclusionA single‐centre retrospective study demonstrated several significant correlates of successful re‐employment and reactivation of drivers’ licence after stroke following rehabilitation training which employs occupational therapy to target skills critical for employment.
Initiation of new psychotropic prescriptions without a psychiatric diagnosis among US adults: Rates, correlates, and national trends from 2006 to 2015
Authors: Rhee Taeho Greg , Rosenheck Robert A. 
Published: October 2018

ObjectivesTo estimate rates and national trends of initiation of new psychotropic medications without a psychiatric diagnosis and to identify demographic and clinical correlates independently associated with such use among US adults in outpatient settings.Data SourceData were gathered from the 2006‐2015 National Ambulatory Medical Care Survey (NAMCS), a nationally representative sample of office‐based U.S. outpatient care. The sample was limited to adults aged 18 or older who received a new psychotropic drug prescription (n = 8618 unweighted).Study DesignUsing a repeated cross‐sectional design with survey sampling techniques, we estimated prescription initiation rates and national trends. Multivariable‐adjusted logistic regression analysis was used to identify correlates independently associated with initiation of new psychotropic prescriptions without a psychiatric diagnosis.Data Collection/Extraction MethodsData were publicly available, and we extracted them from the Centers for Disease Control and Prevention website.Principal FindingsAltogether, at 60.4% of visits at which a new psychotropic prescription was initiated, no psychiatric diagnosis was recorded for the visit. Overall, the rate increased from 59.1% in 2006‐2007 to 67.7% in 2008‐2009 and then decreased to 52.0% in 2014‐2015. Visits to psychiatrists were associated with very low odds of having no psychiatric diagnosis when compared to primary care visits (OR = 0.02; 95% CI, 0.01‐0.04). Visits to non‐psychiatric specialists showed 6.90 times greater odds of not having a psychiatric diagnosis when compared to primary care visits (95% CI, 5.38‐8.86).ConclusionNew psychotropic medications are commonly initiated without any psychiatric diagnosis, especially by non‐psychiatrist physicians. Non‐psychiatrists should document relevant diagnoses more vigilantly to prevent potentially inappropriate use or misuse.
UPLC‐MS2 Profiling of Blackthorn Flower Polyphenols Isolated by Ultrasound‐Assisted Extraction
Authors: Elez Garofulić Ivona , Zorić Zoran , Pedisić Sandra , Brnčić Mladen , Dragović‐Uzelac Verica 
Published: October 2018

AbstractUltrasound‐assisted extraction (UAE) was optimized for fast and effective isolation of blackthorn flower polyphenols. The effects of ethanol concentration (50% and 70%) in extraction solvent, ultrasound amplitude (50%, 75%, and 100%) and extraction time (3, 6, and 9 min) were evaluated. UPLC‐MS2 was used to determine phenolic profile of blackthorn flowers extracts. A total of 28 different phenolic compounds were identified, belonging to the classes of hydroxycinnamic acids, flavonol glycosides and flavanols. Kaempferol and quercetin derivatives were the most abundant compounds represented by kaempferol‐pentoside and rhamnoside in concentrations up to 494.94 and 436.62 mg/100 g and quercetin‐pentoside in concentration up to 226.75 mg/100 g. Observed parameters of UAE did not affect the qualitative phenolic composition of blackthorn flower extracts. On the contrary, the concentration of polyphenols increased with higher ethanol concentration in solvent, higher ultrasound amplitude and prolongation of extraction time. The established conditions for optimal extraction of blackthorn flower polyphenols using ultrasound were: 70% ethanol as extraction solvent, 75% of ultrasound amplitude and 9 min extraction time, resulting in extract rich in polyphenols with a great potential for use in pharmaceutical and food industry.Practical ApplicationIn this study, ultrasound‐assisted extraction (UAE) was optimized in order to establish fast and effective method for production of crude blackthorn flower extract rich in polyphenols. UPLC‐MS2 analysis showed 28 different phenolic compounds belonging to the classes of hydroxycinnamic acids, flavonol glycosides, and flavanols with quercetin and kaempferol glycosides in the highest concentrations, implicating high potential of blackthorn flowers’ extract for use in food and pharmaceutical industries.
“Call for the Use of Axial Terms”: Toward Completeness of NANDA‐I Nursing Diagnoses Labels
Authors: Miguel Susana , Romeiro Joana , Martins Helga , Casaleiro Tiago , Caldeira Sílvia , Herdman T. Heather 
Published: October 2018

PURPOSEThis article explores the current structure of NANDA‐I nursing diagnoses (ND) labels.METHODSCritical analysis of the ND labels, as categorized in the NANDA‐I terminology.FINDINGSMost of the 244 ND labels are composed of terms from the focus and judgment axes.CONCLUSIONSThe specificity of the human responses toward health and life transitions may not be totally represented in the two most common axes, as categorized within taxonomy II.IMPLICATIONS FOR NURSING PRACTICEImprovements in NANDA‐I diagnosis labels would contribute to an advanced terminology and to increased specificity and accuracy of the diagnostic process that is needed in clinical practice. Completeness of the ND labels would reflect clinical reasoning preciseness and help students and nurses in delivering more personalized, safe, and effective patient‐centered care.OBJETIVOEste artigo explora os títulos dos diagnósticos de enfermagem da NANDA‐I.MÉTODOSAnálise crítica dos títulos dos diagnósticos de enfermagem da NANDA‐I.RESULTADOSA maioria dos 244 diagnósticos de enfermagem classificados são compostos essencialmente por termos referentes ao foco e ao julgamento.CONCLUSÕESA especificidade das respostas às transições de saúde e vida pode não estar totalmente representada nos dois eixos mais comuns, como apresentado na taxonomia II.IMPLICAÇÕES PARA A PRÁTICAMelhorias nos diagnósticos da NANDA‐I em relação ao seu aspeto multiaxial contribuiriam no desenvolvimento da sua terminologia e poderiam melhorar a especificidade e acurácia do processo diagnóstico que é necessário à prática clínica. Complementar os títulos dos diagnósticos de enfermagem poderia refletir a acurácia do raciocínio clínico e ajudar os estudantes e enfermeiros em prestarem cuidados centrados no paciente mais personalizados, seguros e eficazes.
Cryodamage of plasma membrane and acrosome region in chicken sperm
Authors: Olexikova Lucia , Miranda Marsia , Kulikova Barbora , Baláži Andrej , Chrenek Peter 
Published: October 2018

AbstractSperm plasma membrane is an essential structure of sperm resistance to freezing. Signs of cryodamage can be visible on the sperm plasma membrane. The aim of our study was to evaluate the appearance of plasma membrane and acrosome in fresh and frozen‐thawed chicken sperm using electron and fluorescence microscopy. Semen was collected from 12 sexually mature roosters of Ross PM3 heavy line, diluted with Kobidil+ extender with 16% of ethylene glycol (KEG; control) or with KEG in combination with one of following non‐permeating cryoprotectants: trehalose (KEG‐TRE) or glycine (KEG‐GLY). Fluorescence staining was used for detection of the membrane integrity, apoptotic changes and viability (Annexin V, Yo‐PRO‐1, PI, respectively). Ultrathin sections (70 nm) from samples were prepared to examine sperm head ultrastructure. Freezing process significantly worsened the status of the sperm plasma membranes. In all frozen groups, only about a quarter of the evaluated sperm were graded as class I quality. In the KEG and KEG‐GLY groups, about half of sperm had severe plasma membrane damages (III class). In sperm with extensively damaged membranes (III class), the acrosome–sperm head junction was mostly disturbed. The use of trehalose was more beneficial (p < 0.05) for sperm plasma membrane than the use of glycine. In contrast, a decrease (p < 0.05) in the apoptotic sperm ratio (Yo‐PRO‐1) was noted in the KEG‐GLY group when compared to other treatments. In conclusion, we identified different plasma membrane and acrosome damages in cryopreserved chicken sperm. The loss of acrosomes can contribute to diminishing of fertilization ability of cryopreserved chicken sperm.