bluuebunny/crossref_metadata_2025 huggingface dataset:
Classifying, Predicting, and Reducing Strategies of the Mesh Excitations of Gear Whine Noise: A Survey
Authors: Sun Menglei , Lu Chihua , Liu Zhien , Sun Yi , Chen Hao , Shen Cunrui
Published: August 2020

Gear whine noise has attracted increasing attention from researchers in both the academe and the industry over the past two decades. The wide range of research topics demonstrates that there is a huge technical challenge in understanding the source-path-receiver mechanisms deeply and predicting the gear whine noise precisely. Thoroughly understanding the sources of gear whine noise is the first step to solving this issue. In this paper, the authors summarize a certain number of published articles regarding the sources of gear whine noise. The excitations of gear whine noise are classified into three groups: transmission error along the line of action direction, frictional excitations along the off-line of action direction, and shuttling excitation along the axial direction. The mechanisms, characteristics, predicting approaches, measuring methods, and decreasing strategies for these excitations are summarized. Current research characteristics and future research recommendations are presented at the end.
Vegetable Freshness Perception in Dementia with Lewy Bodies and Alzheimer’s Disease
Authors: Oishi Yuka , Imamura Toru , Shimomura Tatsuo , Suzuki Kyoko
Published: August 2020

Introduction: Although various visual function deficits have been reported in patients with Alzheimer’s disease (AD) and dementia with Lewy bodies (DLB), vegetable freshness perception has not been thoroughly examined. Objective: To investigate vegetable freshness perception in patients with AD and DLB and to clarify the relationship between vegetable freshness perception and various visuoperceptual functions. Methods: We enrolled 37 patients with probable DLB, 58 patients with probable AD, and 32 age-matched healthy controls. We assessed vegetable freshness perception and visuoperceptual functions, including vegetable brightness perception, contrast sensitivity, color perception, and stereopsis. Patients with DLB showed disproportionate deficits in vegetable freshness perception and vegetable luminance perception compared to patients with AD and controls. Analyses of the groups with higher and lower vegetable freshness perceptions revealed significant differences in contrast sensitivity and visual texture recognition. Results: In the vegetable freshness test, we found significant differences among the 3 groups (F = 30.029, p < 0.0001); the extent of impairment in patients with DLB was greater than that in patients with AD. In patients with DLB, the vegetable freshness judgments were significantly correlated with texture judgment scores and contrast sensitivity. Conclusion: Our findings revealed significantly impaired vegetable freshness perception in patients with DLB. Vegetable freshness perception may be related to visual texture recognition in patients with DLB.
Successful Long-Term Medical Management of Unresectable Insulinomas
Authors: Spiro Andrew J. , Shakir Mohamed K.M. , Hoang Thanh D.
Published: August 2020

In this paper, we present two patients with unresectable insulinomas and a literature review. Patient 1: A 58-year-old woman was diagnosed at age 42, with an insulinoma in the pancreatic tail and hepatic metastasis. She underwent distal pancreatectomy, splenectomy, hepatic wedge resection, and chemoembolization, with resolution of her symptoms. By age 48, her symptoms returned, with new hepatic metastasis. She started long-acting octreotide, with subsequent resolution of her symptoms. She has since had an unremarkable clinical course. Patient 2: A 48-year-old female was diagnosed at age 37. Numerous imaging modalities and two exploratory surgeries did not localize a mass. A distal pancreatectomy did not resolve her symptoms. She tried several medications before her symptoms were finally controlled with low-dose prednisone. She has continued prednisone and diazoxide treatment for the past decade, which controls her symptoms, along with diet modification. In conclusion, while prednisone is not standard therapy, it can control symptoms in patients with unresectable insu­linoma. Providers should be aware of available and emerging medical options. Patients with unresectable insulinomas will likely have better long-term survival rates than those quoted in historical literature. Additional studies are needed to elucidate survival rate and the long-term efficacy of medical therapies.
Plasma Biomarkers and Identification of Resilient Metabolic Disruptions in Patients With Venous Thromboembolism Using a Metabolic Systems Approach
Authors: Fraser Karl , Roy Nicole C. , Goumidi Louisa , Verdu Alexandre , Suchon Pierre , Leal-Valentim Felipe , Trégouët David-Alexandre , Morange Pierre-Emmanuel , Martin Jean-Charles
Published: August 2020

Objective:

Deep vein thrombosis and pulmonary embolism referred as venous thromboembolism (VTE) are a common cause of morbidity and mortality. Plasma from healthy controls or individuals who have experienced a VTE were analyzed using metabolomics to characterize biomarkers and metabolic systems of patients with VTE.

Approach and Results:

Polar metabolite and lipidomic profiles from plasma collected 3 months after an incident VTE were obtained using liquid chromatography mass spectrometry. Fasting-state plasma samples from 42 patients with VTE and 42 healthy controls were measured. Plasma metabolomic profiling identified 512 metabolites forming 62 biological clusters. Multivariate analysis revealed a panel of 21 metabolites altogether capable of predicting VTE status with an area under the curve of 0.92 (
P
=0.00174, selectivity=0.857, sensitivity=0.971). Multiblock systems analysis revealed 25 of the 62 functional biological groups as significantly affected in the VTE group (
P
<0.05 to control). Complementary correlation network analysis of the dysregulated functions highlighted a subset of the lipidome composed mainly of n-3 long-chain polyunsaturated fatty acids within the predominant triglycerides as a potential regulator of the post-VTE event biological response, possibly controlling oxidative and inflammatory defence systems, and metabolic disorder associated dysregulations. Of interest was microbiota metabolites including trimethylamine N-oxide that remained associated to post incident VTE patients, highlighting a possible involvement of gut microbiota on VTE risk and relapse.

Conclusions:

These findings show promise for the elucidation of underlying mechanisms and the design of a diagnostic test to assess the likely efficacy of clinical care in patients with VTE.
Thrombectomy for Distal, Medium Vessel Occlusions
Authors: Saver Jeffrey L. , Chapot Rene , Agid Ronit , Hassan Ameer E. , Jadhav Ashutosh P. , Liebeskind David S. , Lobotesis Kyriakos , Meila Dan , Meyer Lukas , Raphaeli Guy , Gupta Rishi , Amista’ Pietro , Andsberg Gunnar , Cagnazzo Federico , Isalberti Maurizio , Karabegovic Sanja , Kollia Kiriaki , Mangiafico Salvatore , Mis Marcin , Moreno Antonio , Mudersbach Paul von Weitzel , Nossek Erez , Pero Guglielmo , Piasecki Piotr , Raz Eytan , Reis Joao , Rudnicka Svetlana , Sinisalo Matias , Spinetta Marco , Stavngaard Trine , Undren Per , Zamaro Joaquin
Published: August 2020

Endovascular thrombectomy (EVT) is well established as a highly effective treatment for acute ischemic stroke (AIS) due to proximal, large vessel occlusions (PLVOs). With iterative further advances in catheter technology, distal, medium vessel occlusions (DMVOs) are now emerging as a promising next potential EVT frontier. This consensus statement integrates recent epidemiological, anatomic, clinical, imaging, and therapeutic research on DMVO-AIS and provides a framework for further studies. DMVOs cause 25% to 40% of AISs, arising as primary thromboemboli and as unintended consequences of EVT performed for PLVOs, including emboli to new territories (ENTs) and emboli to distal territories (EDTs) within the initially compromised arterial field. The 6 distal medium arterial arbors (anterior cerebral artery [ACA], M2–M4 middle cerebral artery [MCA], posterior cerebral artery [PCA], posterior inferior cerebellar artery [PICA], anterior inferior cerebellar artery [AICA], and superior cerebellar artery [SCA]) typically have 25 anatomic segments and give rise to 34 distinct arterial branches nourishing highly differentiated, largely superficial cerebral neuroanatomical regions. DMVOs produce clinical syndromes that are highly heterogenous but frequently disabling. While intravenous fibrinolytics are more effective for distal than proximal occlusions, they fail to recanalize one-half to two-thirds of DMVOs. Early clinical series using recently available, smaller, more navigable stent retriever and thromboaspiration devices suggest EVT for DMVOs is safe, technically efficacious, and potentially clinically beneficial. Collaborative investigations are desirable to enhance imaging recognition of DMVOs; advance device design and technical efficacy; conduct large registry studies using harmonized, common data elements; and complete formal randomized trials, improving treatment of this frequent mechanism of stroke.
Visual Symbols and Military Culture in Britain’s West African Colonial Army (c.1900–60)
Authors: Stapleton Timothy
Published: August 2020

Visual symbols like uniforms, emblems and ceremonies became central in inventing British military culture among West African forces reflecting orientalist and ornamentalist interpretations of empire. While uniforms fostered military identity, the versions devised for West African soldiers reproduced racial stereotypes and military fashion trends. Granting insignia and Colours to West African units transformed them from simplistic paramilitaries to honoured members of the British imperial milieu. Colours served as ritual objects enabling West African forces to recreate pivotal cultural events of the British regimental system. The public presence of uniformed West African soldiers promoted a sense of imperial majesty that reinforced British rule. Travelling to Britain, West African troops participated in parades and exhibitions initially displaying the epic scale of the empire, but eventually these military visitors became symbols of colonial reform. With independence, Britain’s former colonies in West Africa retained Western-style military symbols altered to highlight republicanism and modernist aspirations.
A new species of the genus Tagasta Bolivar, 1905 (Orthoptera: Pyrgomorphidae) from India
Authors: GUPTA SUNIL KUMAR , CHANDRA KAILASH , YIN HAI-XIANG
Published: August 2020

Tagasta mizoramensis sp. nov. is described from Dampa Wildlife Sanctuary, Mizoram, India. The type specimens are deposited in the Central Entomological Laboratory, Zoological survey of India.
Taxonomic and nomenclatural changes in three species of Pterostichus Bonelli (Coleoptera: Carabidae) from the Far East
Authors: SASAKAWA KÔJI , BERLOV OLEG , OKUZAKI YUTAKA
Published: August 2020

The ground beetle genus Pterostichus Bonelli has diversified in regions including the Far East, but taxonomic issues remain even at the species level. This study presents taxonomic and nomenclatural changes in three species of Pterostichus from the Far East: P. (Petrophilus) eximius Morawitz, P. (Lenapterus) wellschmiedi Kirschenhofer, and P. (L.) subrugosus Straneo. The analyses are based on comparative studies of the endophallus of male genitalia, which is taxonomically useful in Carabidae but has not been examined in these species. The first species, P. eximius, has been treated as a monotypic species that is widely distributed in Eastern Siberia, the Russian Far East, and adjacent regions, but our results revealed that populations from Rishiri-tô and the Sakhalin islands are distinct from the nominotypical population from Transbaikalia. The name for the Sakhalin population, which was synonymized with P. eximius, is reinstated as subspecies P. eximius sachalinensis stat. nov., and the Rishiri-tô population is described as Pterostichus eximius rishiridakensis ssp. nov. Conspecificity (syn. nov.) was confirmed for P. wellschmiedi, which was described from southern Sakhalin, and P. marginatus Matsumura, which was described earlier from southern Sakhalin. No conspicuous differences in the endophallus structure were found between P. subrugosus, which was described from Hokkaidô, and P. marginatus, although differences are recognized in the elytral sculptures and in the metallic luster of the dorsal surface. The taxon was thus downgraded to subspecies P. marginatus subrugosus stat. nov.
Predicting Successful Laparoendoscopic Transhiatal Esophagectomy (THE) by Mediastinal Height Measurement
Authors: Monnett Shane Wylie , Tsai Jonathon Yu-Lin , Austin Jeffrey Daniel , Harmon Cameron Martin , Shapiro Jacob Ian , Calderwood Lisa Christine , Thompson Stephanie , Martinez Maria Alejandra , Tiley Edward Henry , Richmond Bryan Kelly , Clanton Jesse Allen
Published: August 2020

Background

Laparoendoscopic transhiatal esophagectomy (THE) provides advantages over traditional THE by not only avoiding laparotomy but by also allowing more precise esophageal mobilization. Occasionally, the length of the gastric conduit is insufficient to allow delivery into the neck after laparoscopic mobilization and requires laparotomy to complete the procedure. We hypothesize that the need for laparotomy will correlate with the measurement of mediastinal height (distance from thoracic vertebrae T1-T12) on chest CT.

Methods

Medical records of all patients who underwent attempted laparoendoscopic-assisted THE at a tertiary referral center between March 1, 2003 and January 31, 2019 were reviewed. Patients’ mediastinal height was measured using computed tomography (CT) imaging of the chest by investigators and analyzed for correlation between mediastinal height and successful completion of a totally laparoendoscopic procedure.

Results

A total of 21 cases met inclusion criteria: 9 successful laparoendoscopic THE procedures and 12 failed laparoendoscopic THE procedures (those requiring addition of a mini-laparotomy or thoracotomy). The mean mediastinal length for successful laparoendoscopic surgery was 23.5 cm, whereas the mean mediastinal length for failed laparoscopic surgeries was 24.8 cm (P = .03). Patient’s overall height was not found to correlate with the need for conversion.

Conclusions

Shorter mediastinal length is associated with successful laparoendoscopic or laparoscopic THE. This information is readily available to clinicians from routine preoperative staging studies (chest CT) and may be used to potentially predict the success rate of a totally laparoendoscopic approach and aid in patient selection. Further prospective evaluation of these findings is warranted.
Angiotensin-Converting Enzyme Inhibitors Versus Angiotensin II Receptor Blockers in Acute Coronary Syndrome and Preserved Ventricular Ejection Fraction
Authors: Cespón-Fernández María , Raposeiras-Roubín Sergio , Abu-Assi Emad , Pousa Isabel Muñoz , Queija Berenice Caneiro , Paz Rafael José Cobas , Erquicia Pablo Domínguez , Rodríguez Luis Manuel Domínguez , Rodríguez Elena López , Busto María Castiñeira , Barbeira Saleta Fernández , Romo Andrés Íñiguez
Published: August 2020

Angiotensin-converting enzyme inhibitor (ACEi) and angiotensin II receptor blockers (ARB) showed comparable survival results in patients with heart failure (HF) and reduced left ventricular ejection fraction (LVEF). However, there is lack of evidence of the comparative effectiveness in preserved LVEF patients after an acute coronary syndrome (ACS). The aim of this study was to evaluate whether the selection between ACEi and ARB in preserved LVEF after an ACS confers a prognostic benefit, based on real life results. We analyzed a cohort of 3006 contemporary patients with LVEF ≥40% after an ACS. A propensity score matching and Cox regression analysis were performed to assess the association between treatment and events (death, acute myocardial infarction [AMI], HF, and combined event) for a mean follow-up of 3.6 ± 2.1 years. We found no significant differences between ACEi/ARB for all-cause mortality (hazard ratio [HR] for ARB: 0.95, 95% CI: 0.70-1.29), AMI (HR for ARB: 1.34, 95% CI: 0.95-1.89), HF (HR for ARB: 1.11, 95% CI: 0.85-1.45), or combined end point (death, AMI and HF: HR for ARB: 1.14, 95% CI: 0.92-1.40). In conclusion, there are no prognostic differences between the use of ACEi and ARB in patients with LVEF ≥40% after ACS. Further prospective studies are needed to confirm our results.
Labor’s Legacy: The Construction of Subnational Work Regulation
Authors: Galvin Daniel J.
Published: August 2020

In recent decades, much of the authority to regulate the workplace has shifted from national-level labor law to state-level employment law. What contributions, if any, did labor unions make to this historic shift in workplace governance? The author uses quantitative and qualitative analyses to test hypotheses and move incrementally closer toward drawing causal inferences. In the first part, he finds a strong statistical relationship between union density and state employment law enactments. Next, analyzing the cases the model identifies as “deviant” (Pennsylvania and Maine), he uses systematic process tracing to test the hypothesis that labor unions were integral players in legislative campaigns for stronger employment laws. Strong evidence supports the hypothesis that labor unions, even as they declined, contributed to the construction of this new system of subnational work regulation—arguably one of their most significant and durable legacies.
How Do Employers Choose between Types of Contingent Work? Costs, Control, and Institutional Toying
Authors: Benassi Chiara , Kornelakis Andreas
Published: August 2020

The increasing variety of contingent work raises the question of how employers choose between various types of contractual arrangements. The authors review relevant Employment Relations and Strategic HRM literature and distinguish four types of contingent contracts along the dimensions of costs and control. They argue that employers are making choices based on cost and control constraints but are able to reshape these constraints through “institutional toying.” Their case study of a German manufacturing plant and R&D center illustrates the mechanisms of institutional toying, which are consistent with the literature on institutional loopholes and exit options. The article develops propositions that explain the diversity of contingent work arrangements and show how toying strategies enlarge the range of options available to employers.
Expandable polystyrene without any embedded blowing agent
Authors: Haji Avdi Habib , Nasiri Morteza , Tehrani Mohammad Javad , Aghdam Maryam Alizadeh , Abbasi Farhang
Published: August 2020

In this research, in-situ suspension polymerization of styrene in the presence of graphene, without any blowing agent, was investigated. Steam used in the expansion process of graphene-filled expandable polystyrene (GEPS). The dispersed graphene nano-sheets in the polystyrene matrix may absorb water in high temperatures, which evaporates by lowering the pressure and expansion precedes. The effects of graphene type and loading and steam temperature on the expansion ratio evaluated. Scanning electron microscopy (SEM) used to reveal the cross-section morphologies before and after expansion. The effect of graphene on the polymerization kinetics evaluated by differential scanning calorimetry (DSC). The results showed that by increasing the graphene loading, the rate of polymerization decreased, and the expansion ratio increased. The highest expansion ratio of about 4.8 was for particles containing 0.4% of graphene. Therefore, it was shown that by using graphene as a dispersed phase, polystyrene particles expanded without any organic blowing agents. Here, the idea of expandable polymers without any embedded blowing agent is introduced, which eliminates the release of volatile organic compounds and makes the process environmentally friendly.
Enhancing the accuracy and efficiency of characterizing polymeric cellular structures using 3D-based computed tomography
Authors: Karimipour-Fard Pedram , Naeem Ibrahim , Mohany Atef , Pop-Iliev Remon , Rizvi Ghaus
Published: August 2020

Characterizing the morphology of polymeric foams is crucial for determining their practical applicability. The internal cellular structure of polymeric foams is typically analyzed by 2 D imaging techniques, such as Scanning Electron Microscopy (SEM) and optical microscopy. The problem with these techniques is that their tests are tedious, destructive, and the accuracy of the obtained results is questionable. The objective of this paper is to establish and experimentally verify an efficient 3- dimensional (3 D) Microcomputed-tomography based methodology for reliably estimating and characterizing each of the phases commonly present in multiple types of polymeric foam samples, such as the open, the closed, and the solid phase. A comparative study was carried out between morphology data obtained from 2-dimensional (2 D) analysis and those obtained from 3 D analysis to investigate the reliability of the 2 D analysis results. In this context, the experimental results revealed that by using a 2 D method the open porosity was underestimated at the expense of closed porosity, which in turn was overestimated, while the total porosity was not impacted. Also, visualization of the internal structure of polymer foams by using Micro-CT provides details about the 3 D space which cannot be obtained from SEM images. The analysis of foamed specimen demonstrated that the polymeric foam phases extracted from Micro-CT images were in agreement with the experimentally measured values of total porosity of the samples. In an effort to reduce computational requirements, the effects of reducing data size on the accuracy of results has also been studied by averaging image pixels in 3 D space and the results were compared for multiple types of foam structures. This method reduced the processing time considerably, and yielded comparable porosity values. However, the number of detected pores were lowered due to the inability of this method to detect very small cells after 3 D averaging of image pixels.
Performance of SiO2-impregnated flax fibre reinforced polymers under wet dry and freeze thaw cycles
Authors: Mak Kenneth , Fam Amir
Published: August 2020

Flax fibres are of growing interest as a reinforcing fibre; however, they are susceptible to moisture and have demonstrated poor bond to conventional hydrophobic resins. Although there are multiple approaches to address these issues, research has heavily focused on their short-term performance. In this research program, the performance of flax fibre reinforced polymer (FFRP), manufactured using SiO2-impregnated flax fibre, is assessed for its short-term performance as well as its long-term performance when exposed to wet-dry (WD) and freeze-thaw (FT) cycles. Treated FFRP showed improved bond between the fibre and resin as well as resistance to fibre pull-out. It exhibited a tensile strength of 144 ± 15 MPa and a tensile modulus of 8.6 ± 0.35 GPa. When exposed to WD cycles, delamination between the fibre and resin were observed. The onset of statistically significant mechanical damage occurred after four WD cycles, with a final 3% reduction in strength and a 6% reduction in modulus post-exposure. When exposed to FT cycles, FFRP experienced cracking within the fibre, as well as delamination at the interface. The onset of statistically significant mechanical damage occurred after 50 FT cycles, which manifested as a final 5% reduction in tensile strength and 10% reduction in tensile modulus post-exposure. Regardless of treatment, FFRP demonstrated the same damage mechanisms as untreated variants.
Mechanical behaviour and microscopic analysis of epoxy and E-glass reinforced banyan fibre composites with the application of artificial neural network and deep neural network for the automatic prediction of orientation
Authors: Shyam Suraj , Kaul Shivam , Kalsara Nirav , Babu T Narendiranath
Published: August 2020

This paper deals with the testing of tensile and flexural behaviour of epoxy-reinforced natural fibre composites, for which Banyan fibres have been selected as the natural fibre. Variations are made in the orientation of the fibres to determine which orientation made the composite the strongest. The fibre strands are arranged in different orientations, such as the uniaxial, biaxial and criss-cross arrangements, to differentiate between the orientations and observe which arrangement exhibited the best mechanical behaviour. The fibres are initially washed with 0.5% weight/volume (w/v) NaOH solution, following which specimens of the composites are made using wooden moulds designed according to ASTM standards. Biaxial layers of E-glass are incorporated into the matrix in an attempt to enhance the mechanical properties of the specimen. The variances observed in the Young’s modulus are analysed to understand the factors that majorly impacted it. For a better understanding of the results, the chemical functional groups and the microstructure of the samples are analysed with the aid of Fourier-Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM) and X-Ray powder Diffraction (XRD). Additionally, predictive models are simulated using Artificial and Deep Neural Networks to recognise patterns in the data, by varying specific parameters. The results obtained indicated that Banyan fibre composites can replace conventionally-used materials and serve real-world purposes better.
Genome-wide Analyses Identify a Novel Risk Locus for Nonsyndromic Cleft Palate
Authors: He M. , Zuo X. , Liu H. , Wang W. , Zhang Y. , Fu Y. , Zhen Q. , Yu Y. , Pan Y. , Qin C. , Li B. , Yang R. , Wu J. , Huang Z. , Ge H. , Wu H. , Xu Q. , Zuo Y. , Chen W. , Qin Y. , Liu Z. , Chen S. , Zhang H. , Zhou F. , Yan H. , Yu Y. , Yong L. , Chen G. , Liang B. , Cornell R.A. , Zong L. , Wang L. , Zou D. , Sun L. , Bian Z.
Published: August 2020

The 3 major subphenotypes observed in patients with nonsyndromic orofacial clefts (NSOFCs) are nonsyndromic cleft lip only (NSCLO), nonsyndromic cleft lip with palate (NSCLP), and nonsyndromic cleft palate only (NSCPO). However, the genetic architecture underlying NSCPO is largely unknown. Here we performed a 2-stage genome-wide association study (GWAS) on NSCPO and replication analyses of selected variants in other NSOFCs from the Chinese Han population. We identified a novel locus (15q24.3) and a known locus (1q32.2) where variants in or near the gene reached genome-wide significance (2.80 × 10−13 < P < 1.72 × 10−08) in a test for association with NSCPO in a case-control design. Although a variant from 15q24.3 was found to be significantly associated with both NSCPO and NSCLP, the direction of estimated effects on risk were opposite. Our functional annotation of the risk alleles within 15q24.3 coupled with previously established roles of the candidate genes within identified risk loci in periderm development, embryonic patterning, and/or regulation of cellular processes supports their involvement in palate development and the pathogenesis of cleft palate. Our study advances the understanding of the genetic basis of NSOFCs and provides novel insights into the pathogenesis of NSCPO.
Effects of Dark and Bright Timbral Instructions on the Production of Pitch and Timbre
Authors: Springer D. Gregory , Schlegel Amanda L. , Lewis Andrew J.
Published: August 2020

The purpose of this study was to examine the effects of timbral instructions on pitch and timbre production. High school ( n = 28) and collegiate ( n = 28) trumpeters played sustained tones at two octave levels (written C4 and C5) following three types of timbral instructions (dark-timbre, bright-timbre, or neutral instructions). Presentation orders were randomly assigned. Dependent variables included one acoustical measure of pitch (absolute cent deviation) and one acoustical measure of timbre (spectral centroid). Participants also reported which type of instruction they perceived to result in their “best sound” and their “most in-tune performance.” Results indicated a significant interaction between timbral instruction condition and octave. Post hoc testing revealed that timbral instructions affected participants’ absolute cent deviation, but different effects were observed in each octave. The effect of timbral instructions on participants’ spectral centroid was nonsignificant. Participants demonstrated a preference for the neutral instruction over the dark- and bright-timbre instructions, and their tuning accuracy varied by octave and instruction condition. These data suggest that music educators may need to use timbral instructions judiciously so that the instruction to play with a different timbre does not result in unintentional changes in pitch.
Femoral histomorphometric age-at-death studies: The issue of sample size and standard error
Authors: Maggio Ariane , Franklin Daniel
Published: August 2020

Extant histomorphometric aging methods based on the analysis of the femoral cortex generally report small samples ( N<100) and highly variable standard error of the estimate (SEE) values (±1.51‒16.98 years). The present paper reviews the published literature on femoral histomorphometry for age-at-death estimation in order to examine the relationship between sample size and SEE values, and makes recommendations for minimum reporting requirements for age-at-death studies based on statistical data. The SEE from a total of 33 studies are analysed. Sample size and confidence intervals are explored using Hennig and Cooper’s simulation modelling. Analysis of effect size through a fixed-effect model is performed on 5/33 studies to examine the relationship between sample size and effect size. The pooled sex formulae from Nor et al., Martrille et al. and Thompson and the two sex-specific formulae of Pfeiffer are examined, as they report mean and standard deviation values for both chronological and estimated ages. The results of these analyses support sampling theory, specifically wide variation in SEE when N<100, narrowing as the sample size increases, and lower effect sizes in the larger of the five studies examined. The findings provide some support for a minimum threshold of 100‒150 individuals for histomorphometric age-at-death estimation. Analysis of effect size is suggested for future investigation in meta-analyses of forensic anthropological age-estimation studies. To ensure increased precision and meaningful comparison, large samples should be used for histomorphometry, and authors should report SEE and discrete statistics (e.g. n, mean, standard deviation) for both chronological age and estimated age.
Predictive policing: The risks associated with risk assessment
Authors: Strikwerda Litska
Published: August 2020

Focusing on the Dutch tools SyRI and CAS, this paper describes predictive policing against the background of the broader development toward a pre-crime society, the accompanying culture of control and the new penal logic it gives rise to. It will explain the risks associated with the risk assessments predictive policing tools provide and end with the recommendation to use predictive policing not only for police deployment, but also to target problem-oriented responses to crime to the right persons and places.
I Can But I Shall Not Always Be Empathic
Authors: Tremblay Marie-Pier B. , Marcoux Audrey , Turcotte Valérie , Woods Jamie , Rouleau Camille , Grondin Frédéric , Jackson Philip L.
Published: August 2020

Empathy, a core process for social interactions, is the capacity to understand and share others’ mental states and emotions. Each individual is thought to have a maximum level of empathy (empathic ability) and a spontaneous tendency to express it (empathic propensity), which can be affected by multiple factors. Two within-subject studies were conducted to assess the malleability of empathy by modulating contextual factors and measuring their interaction with psychological characteristics. In Study 1, 59 healthy adults evaluated their empathy for people showing facial expressions of pain following different instructions: Passive Observation and Instruction to Actively Empathize. In Study 2, 56 healthy adults performed a similar task under two conditions: Passive Observation and Observation under a Cognitive Load. The results revealed that empathy was significantly increased in the actively empathizing condition (Study 1) and under a cognitive load, but more importantly for men (Study 2). The level of change between the two conditions was associated with self-reported empathy, autistic, alexithymia and psychopathic traits (Study 1), as well as with working memory capacities and the level of empathy reported in the passive observation condition (Study 2). These findings suggest that an instruction to actively empathize and, surprisingly, a cognitive load can both increase empathy, but not for the same individuals. An instruction to actively empathize seems to increase empathy for individuals with good empathic dispositions, while a cognitive load enhances empathy in people for which empathic propensity is sub-optimal.
The Role of Images on Illness Behaviour: Interdisciplinary Theory, Evidence, and Ideas
Authors: Murray Jennifer , Williams Brian
Published: August 2020

If illness behaviour is to be fully understood, the social and behavioural sciences must work together to understand the wider forms in which illness is experienced and communicated with individuals and society. The current paper synthesised literature across social and behavioural sciences exploring illness experience and communication through physical and mental images. It argues that images may have the capacity to embody and influence beliefs, emotions, and health outcomes. While four commonalities exist, facilitating understandings of illness behaviour across the fields (i.e., understanding the importance of the patient perspective; perception of the cause, sense of identity with the illness, consequences, and level of control; health beliefs influencing illness experience, behaviours, and outcomes; and understanding illness beliefs and experiences through an almost exclusive focus on the written or spoken word), we will focus on exploring the fourth commonality. The choice to focus on the role of images on illness behaviour is due to the proliferation of interventions using image-based approaches. While these novel approaches show merit, there is a scarcity of theoretical underpinnings and explorations into the ways in which these are developed and into how people perceive and understand their own illnesses using image representations. The current paper identified that the use of images can elucidate patient and practitioner understandings of illness, facilitate communication, and potentially influence illness behaviours. It further identified commonalities across the social and behavioural sciences to facilitate theory informed understandings of illness behaviour which could be applied to visual intervention development to improve health outcomes.
A novel model for low-cycle multiaxial fatigue life prediction based on the critical plane-damage parameter
Authors: Liu Jianhui , Lv Xin , Wei Yaobing , Pan Xuemei , Jin Yifan , Wang Youliang
Published: August 2020

Multiaxial fatigue of the components is a very complex behavior. This analyzes the multiaxial fatigue failure mechanism, reviews and compares the advantages and disadvantages of the classic model. The fatigue failure mechanism and fatigue life under multiaxial loading are derived through theoretical analysis and formulas, and finally verified with the results of multiaxial fatigue tests. The model of multiaxial fatigue life for low-cycle fatigue life prediction model not only improves the prediction accuracy of the classic model, but also considers the effects of non-proportional additional hardening phenomena and fatigue failure modes. The model is proved to be effective in low-cycle fatigue life prediction under different loading paths and types for different materials. Compared with the other three classical models, the proposed model has higher life prediction accuracy and good engineering applicability.
Performance analysis of compliant cylindrical intershaft seal
Authors: Hou Guoqiang , Su Hua , Chen Guoding , Tian Yuhai
Published: August 2020

To improve the intershaft seal performance of the dual-rotor turbofan engine and extend the life of the intershaft seal, a compliant cylindrical aerodynamic intershaft seal structure is proposed, which avoids the problem of leakage increase after tooth wear of intershaft labyrinth seal. According to the proposed seal structure, the force condition of the floating seal ring is analyzed, and an aeroelastic coupling method for the floating seal ring eccentricity is presented. And the leakage characteristics, with different seal structures and operating conditions are calculated and compared when the two rotors are under homodromy/counter-rotating condition. The results show that, for the dual-rotor cylindrical hydrodynamic gas film seal, the hydrodynamic effect under homodromy condition is enhanced greatly while the hydrodynamic effect is significantly weakened under counter-rotating condition; the rotational direction of rotors, seal width, rotor circular precession eccentricity, rotational speed and rotor radius all have pronounced influence on the seal performance. For the application of hydrodynamic form of compliant cylindrical intershaft seal, the seal performance under homodromy condition is better than that under counter-rotating condition.
‘The student experience’ and the remaking of contemporary studenthood: A critical intervention
Authors: Pötschulat Maike , Moran Marie , Jones Paul
Published: August 2020

‘The student experience’ is a formulation that will be familiar to many reading this article; increasingly the term has come to stand in for an imprecise set of values and practices around higher education study. Despite the fuzziness that characterises its use, ‘student experience talk’ has gained traction in education policy and rankings, academic research, and amongst students themselves. After initially drawing from Raymond Williams to situate ‘the student experience’ as a keyword across policy, marketing and educational domains, we analyse contemporary usage of the term in: (1) students’ own accounts of their engagements with the city in which they study; and (2) academic social science. A membership category when used by undergraduate students, the term serves to obfuscate a market logic in which achieving the student experience is an aspirational endeavour linking disparate place-based consumption practices in their university city. Drawing on the Bourdieusian distinction between categories of practice and categories of analysis, we argue that the contemporary deployment of ‘the student experience’ across popular and policy spaces does not mean that academics should import it uncritically into their analysis. On the contrary: the reification of this category of practice is precisely what has enabled the scramble for its attainment and management. Rather than allowing the embedding and normalisation of terms such as ‘the student experience’, the role of critical social science should be to unpack these muddled categories to avoid calling into being and reproducing what they seem to only describe.
Study on the model of semi-open-end twist in compact spinning with lattice apron
Authors: Fu Ting , Zhang Yuze , Akankwasa Nicholus Tayari , Chen Nanliang , Lin Huiting
Published: August 2020

The twist mechanism of the fiber strand in the condensing zone in compact spinning is complex. This paper proposes a dynamic model to evaluate the additional twist of the fiber strands. Based on the flow simulation in the condensing zone, the fiber trajectory in the suction slot was simulated and obtained. Several spinning parameters such as suction slot angle, suction slot width, negative pressure, and shape of suction slot, were varied to show their effects on the additional twist. The simulation results indicated that by increasing the suction slot angle from 5° to 10° the additional twist increased significantly. Higher negative pressure also leads to an increase in the additional twist. The suction slot width has a greater effect on the fiber trajectory than on the additional twist. An arc-shape suction slot increased the additional twist compared with a linear-shape one. An experimental test conducted revealed a precise agreement with the simulation results.
Complementary policies for multidimensional problems: Does the low-income housing tax credit complement homeless services in the USA?
Authors: Kim Saerim , Sullivan Andrew A
Published: August 2020

Governments use multiple policies targeting different severities of housing insecurity to address multidimensional urban problems such as homelessness, where poverty and unaffordable housing intertwine with many causes and contexts. Previous studies have focused on the determinants of housing insecurity or using affordable housing alone but not on how using multiple policies jointly reduces homelessness. We explore if affordable housing created by the low-income housing tax credit (LIHTC) complements homeless services through the housing security network in decreasing homelessness in communities. Utilising a first-differenced model with panel data from 2007 to 2015, results indicate that LIHTC unit developments complement homeless services in moderately reducing homelessness when both policies are used relative to only using homeless services. Studying multiple policies addressing homelessness creates a useful application of theory on complementary policies to see how affordable housing with homeless services affects homelessness at the community level.
The slave, the migrant and the ontological topographies of the international
Authors: Niang Amy
Published: August 2020

An examination of the figure of the slave and the figure of migrant make visible important historical interconnections that sustain past and present elaborations of the human and ‘the international’. These interconnections have always been racialised and they have structurally constituted the making of an interdependent world community. A series of instrumentalised discourses, at times turned into rationalities that govern policies towards migrants, particularly in a post 9/11 context, increasingly normalises the idea that there are people that can be justifiably expelled from the civic/civil, and increasingly human sphere. The slave was forcefully removed, both physically from attachment to kin and land, and morally from the history of humankind. The migrant is pushed out of the bounds of the livable as well as the moral category of rights-bearer. The commonalities that configure both phenomena are rooted in an extractive supply economy and a hierarchised ordering of humans. The article uses the history of Frederick Douglas to show that the absence of ‘care’ as methodology of relationality limits the valence of interdependence as a marker of a globalised world. In doing so, it challenges the unexamined assumptions of new/posthumanism that advocates radical interdependence without interrogating the modalities of ‘humanity’ among different categories of humans.
Transforming Introductory Sociology with Team-Based Learning: Sufficient Value and Surmountable Challenge?
Authors: Bulanda Jennifer Roebuck , Frye Shelby
Published: August 2020

Team-Based Learning (TBL) is a highly structured, immersive teaching strategy that emphasizes active learning through peer teams. Despite its many potential benefits for teaching introductory sociology, it has been slow to gain traction in the discipline. Instructors may debate whether the value of TBL is sufficient to justify its challenges, which may include student resistance, increased time demands, and difficulty envisioning implementation. We aim to resolve this debate in four ways by (1) familiarizing faculty with the TBL method, (2) examining the value of TBL for students and instructors, (3) discussing strategies for overcoming challenges, and (4) offering an example of how TBL can be implemented in an introductory sociology course. As the scholarship of teaching and learning continues to challenge faculty to implement forward-thinking teaching techniques that move beyond traditional lecture, we conclude that TBL offers a compelling framework for transforming the introductory sociology course.
Healing the Sick City: Local Guides, Visiting Nurses, and Vernaculars of Pain on New York’s Lower East Side
Authors: Cunningham Erin , Black Joel
Published: August 2020

Lillian Wald brought public health nursing to New York City’s congested Lower East Side in summer 1893, where she recorded tenement dwellers’ suffering from cuts, burns, breaks, deaths, illness, and childbirth. Together, nurses traveling streets, alleys, rooftops, and hallways, alongside dwellers acting as “local guides,” inaugurated vernacular mappings. Drawing on letters Wald wrote to her benefactor, Jacob Schiff, in July 1893, describing visiting, cleaning, healing, and connecting, this article uncovers a spatial dimension to pain that invites historians of urban America to discover the sick city.
Functional interval observer design for singular fractional-order systems with disturbances
Authors: Huong Dinh Cong , Yen Dao Thi Hai
Published: August 2020

In this study, we consider the problem of designing functional interval observers for a class of singular fractional-order systems. The goal of this work is to design not a full state interval observer for singular fractional-order systems, but to design an observer for state functions of this kind of systems. Conditions for the existence of such functional interval observers are given and an effective algorithm for computing unknown observer matrices is provided in this study. Two numerical examples and simulation results are provided to illustrate the effectiveness of the proposed design method.
CT Diagnosis of the Fracture of Anterior Nasal Spine
Authors: You Tingting , Meng Yanjie , Wang Yonghua , Chen Haisong
Published: August 2020

Objective:

To study anterior nasal spine fractures, including the incidence, missed diagnosis rates, and relationship with shapes using computed tomography (CT).

Methods:

Two hundred cases of axial CT images performed for maxillofacial trauma were reviewed. The incidence, correct, and missed diagnosis rates of anterior nasal spine fractures were studied. The relationship between the fracture and the shape of the anterior nasal spine was also analyzed.

Results:

The rate of anterior nasal spine fractures was 22.00% (44 of 200). The diagnostic accuracy was 4.55% (2 of 44) and the missed diagnosis rate was 95.45% (42 of 44). The fracture rates of the double rod, single rod, triangle, and irregular anterior nasal spine were 33.85% (22 of 65), 32.26% (10 of 31), 12.24% (12 of 98), and 0.00% (0 of 6), respectively. The double and single rod types of anterior nasal spine were most likely to be fractured than the type of triangle (χ2 = 11.05, 6.67, P < .0167). No fracture was found in the irregular type of anterior nasal spine.

Conclusion:

Anterior nasal spine fractures are not rare and the high missed diagnostic rate results from unfamiliarity with the structure. Double and single rod types of anterior nasal spines are easy to fracture. Bony reconstruction and thin thickness of CT images are necessary for diagnosis.