bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic and Stress Analyisis of Spatial Flexible Mechanical Systems
Authors: Kremer J. M. , Shabana A. A. , Widera G. E. O. 
Published: March 2021

Abstract
This investigation concerns itself with the dynamic and stress analysis of thin, laminated composite plates consisting of layers of orthotropic laminae. It is assumed that the bonds between the laminae are infinitesimally thin and shear nondeformable. The finite element formulation presented is sufficiently general to accept an arbitrary number of layers and an arbitrary number of orthotropic material property sets. In the dynamic formulation presented, the laminae is assumed to undergo large arbitrary rigid body displacements and small elastic deformations. The nodal shape functions of the laminae are assumed to have rigid body modes that need to describe only large rigid body translations. Using the expressions for the kinetic and strain energies, the lamina mass and stiffness matrices are identified. The nonlinear mass matrix of the lamina is expressed in terms of a set of invariants that depend on the assumed displacement field. By summing the laminae kinetic and strain energies, the body mass and stiffness matrices are identified. It is shown that the body invariants can be expressed explicitly in terms of the invariants of its laminae. Numerical examples of a spatial RSSR mechanism demonstrate the use of the present formulation.
Redundant Robot: A Dynamic Performance Point of View
Authors: Marchis Vittorio , Sinatra Rosario 
Published: March 2021

Abstract
Redundant robots find important applications in non structured environment, particularly in presence of obstacles.
The number of degree of freedom (DOF) allow a choice of the configuration over range, even when the path has been planned and the constraints have been taken into account.
Optimization of the time history, to be planned for the robot, can be achieved with respect to several objective functions.
Following to a previous work by the Authors, the present paper analyzes the vibration eigenfrequencies, and their oscillation principal directions applied to a plane 3R manipulator, over its entire workspace.
A dynamic performance map, correlated to the robot geometrical parameters, has been calculated via Monte Carlo method.
PDES/STEP: A Status Report
Authors: Ryan Steven A. 
Published: March 2021

Abstract
This status report provides a current overview of the work that is progressing toward the development of an international Standard for the Exchange of Product model data (STEP). STEP has the potential for revolutionizing the exchange of product definition data. The current state of the art in product data exchange requires knowledge of both the sending and receiving system in order to expect a reliable exchange to occur. The basic premise that STEP is built upon is to support the exchange and sharing of product model data without the need to know the sending or receiving system. The first release of STEP as a Draft International Standard will occur in 1992. The capability of that release will provide a strong basis for system designers and integrators to develop STEP compliant products that can support a significant portion of the product definition data that is exchanged today between and within businesses.
Use of PDES in Group Technology Applications for Electronics
Authors: Harhalakis G. , Kinsey A. , Minis I. 
Published: March 2021

Abstract
A novel application of the PDES standard for automated group technology (GT) code generation is presented. The study focuses on microwave modules (MWM’s), which include a mechanical ground plane with machined features, as well as electrical artwork and electronic components. Several modifications and enhancements were made to the Layered Electrical Product information model of the PDES standard in order to capture the particular characteristics of MWM’s. The modified PDES model was implemented using the ORACLE relational database, and served as the primary input to the automated GT code generation system developed at the University of Maryland. The principle difficulties encountered using PDES in our work are discussed, including: (i) lack of a proper feature hierarchy, (ii) limiting supertype-subtype specifications, and (iii) complications in implementing the LEP model to a relational database schema.
Environment for Application Software Integration and Execution
Authors: Jones Kennie H. , Randall Donald P. , Rowell Lawrence F. , Gates Raymond L. , Nichols Chris M. , Williams S. Blake 
Published: March 2021

Abstract
The Environment For Application Software Integration and Execution (EASIE) is a methodology and a set of software utility programs developed at the NASA Langley Research Center for coordinating the use of engineering design and analysis computer programs. Under user direction, EASIE controls the execution of independently developed programs and manages the flow of data to and from a common relational data base in order to accomplish design or analysis objectives.
The process is highly automated. For example, a utility program generates a DATA DICTIONARY, describing the contents of the data base and the various subsets of data used by the application programs. Other utilities automatically generate FORTRAN or C subroutines to link the application programs with the database or to pre- and post-process the data. EASIE is also “user friendly,” providing “windows” into the data base to view subsets of the data and the means to modify the data at any time A key feature is the degree of independence it provides to the programmer and user from the details of the operating system and Data Base Management System.
EASIE has been used successfully in the integration of several design systems at Langley and within the aerospace industry. This paper discusses the application of EASIE to these specific systems, emphasizing the advantages it has provided to both programmers and users. Significant improvements made as a result of these experiences will also be discussed.
Uplifted marine terraces on Santa Catalina Island, California, USA
Authors: McInnis Margarita , Pinter Nicholas 
Published: March 2021

Abstract
Marine terraces are widespread along California's coastline, including on all of the Channel Islands, with the possible exception of Santa Catalina. For over a century, the origins of subhorizontal surfaces and gravel deposits on Santa Catalina have been debated, with recent suggestions that Santa Catalina has no marine terraces and is subsiding. We mapped, measured, and described terrace deposits on Santa Catalina Island, including both in situ deposits and distributed gravel float. Rounded gravels and cobbles, locally pholad-bored, are present as float across low-relief surfaces in the Little Harbor area. We also mapped and described the Eagles Nest Gravels, an ∼8-m-thick package overlying a broad bedrock-cut platform at ∼200 m elevation and dipping 3.2° northward. The Eagles Nest Gravels contain rounded cobbles and boulders, many of which contain pholad borings. Two other platforms are inferred from concordant gravels with similar orientations but at lower elevations. Terrace deposits on Santa Catalina truncate underlying lithological units, including a narrow band of fossiliferous Miocene to Pliocene sands. Terrace deposits and gravel lag on Santa Catalina closely resemble older terrace deposits on other California Channel Islands. The terraces on Santa Catalina Island remain undated but document at least 200 m of net uplift, similar to the elevations of undated terraces on the other Channel Islands. While the timing of uplift of Santa Catalina is unclear, analysis of terrace deposits in the Little Harbor area confirms their marine origin and settles the debate regarding the presence of marine terraces on Santa Catalina Island.
Pharmacologically treated diabetes and hospitalization among older Norwegians receiving homecare services from 2009 to 2014: a nationwide register study
Authors: Fismen Anne-Siri , Igland Jannicke , Teigland Tonje , Tell Grethe Seppola , Ostbye Truls , Haltbakk Johannes , Graue Marit , Birkeland Kare I , Peyrot Mark , Iversen Marjolein Memelink 
Published: March 2021

IntroductionThe aim was to assess whether annual hospitalization (admissions, length of stay and total days hospitalized) among persons >65 years receiving home care services in Norway were higher for persons with diabetes than those without diabetes. Given the growing prevalence of diabetes, this issue has great importance for policy makers who must plan for meeting these needs.Research design and methodsData were obtained from national Norwegian registries, and the study population varied from 112 487 to 125 593 per calendar year during 2009–2014. Diabetes was defined as having been registered with at least one prescription for blood glucose lowering medication. Overall and cause-specific hospitalization were compared, as well as temporal trends in hospitalization. Hospitalization outcomes for persons with and without diabetes were compared using log-binomial regression or quantile regression, adjusting for age and gender. Results are reported as incidence rate ratios (IRRs).ResultsHigher total hospitalization rates (IRR 1.17; 95% CI 1.12 to 1.22) were found among persons with, versus without, diabetes, and this difference remained stable throughout the study period. Similar reductions over time in hospital length of stay were observed among persons with and without diabetes, but total annual days hospitalized decreased significantly (p=0.001) more among those with diabetes than among those without diabetes.ConclusionsAmong older recipients of home care services in Norway, diabetes was associated with a higher overall risk of hospitalization and increased days in the hospital. Given the growing prevalence of diabetes, it is important for policy makers to plan for meeting these needs.
Predictors of controlled prescription drug non-medical and lifetime use among patients accessing public mental health services in Uganda: a cross-sectional study
Authors: Kamba Pakoyo Fadhiru , Mulangwa John , Kageni Peter , Balikuna Sulah , Kengo Allan , Mutamba Brian Byamah , Sewankambo Nelson , Adome Richard Odoi , Byakika-Kibwika Pauline 
Published: March 2021

ObjectivesWe determined the prevalence of controlled prescription drug (CPD) non-medical and lifetime use and their predictors among patients at three public psychiatric clinics in Uganda to identify missed care opportunities, enhanced screening priorities, and drug control needs.MethodsA cross-sectional survey of 1275 patients was performed from November to December 2018. Interviewer-administered semi-structured questionnaires, desk review guide and urine drug assays were employed. Questionnaire recorded CPD non-medical and illicit drug use history from patients’ files, CPD lifetime use and risk factors. Desk review guide recorded recently prescribed drugs in patients’ files to corroborate with urine assays. Predictors were analysed by multivariate logistic regression.ResultsFrom desk review, 145 (11.4%) patients had history of CPD non-medical use and 36 (2.8%) had used illicit drugs. Of 988 patients who provided urine, 166 (16.8%) self-medicated CPDs, particularly benzodiazepines while 12 (1.2%) used illicit drugs. Of those with drug-positive urine, 123 (69.1%) had no documented history of CPD non-medical and illicit drug use. Being an inpatient (OR=10.90, p<0.001) was independently associated with CPD non-medical use. Additionally, being an inpatient (OR=8.29, p<0.001) and tobacco consumption (OR=1.85, p=0.041) were associated with CPD non-medical and illicit drug use combined. Among participants, 119 (9.3%) reported CPD lifetime use, and this was independently associated with education level (OR=2.71, p<0.001) and history of treatment for substance abuse (OR=2.08, p=0.018).ConclusionsCPD non-medical use is common among Uganda’s psychiatric patients, and more prevalent than illicit drug use. Rapid diagnostic assays may be needed in psychiatric care in resource limited settings. It is necessary to assess how CPD non-medical use impacts mental care outcomes and patient safety. High risk groups like inpatients and tobacco consumers should be prioritised in psychiatric screening.
Impact of chronic Achilles tendinopathy on health-related quality of life, work performance, healthcare utilisation and costs
Authors: Sleeswijk Visser Tjerk S O , van der Vlist Arco C , van Oosterom Robert F , van Veldhoven Peter , Verhaar Jan A N , de Vos Robert-Jan 
Published: March 2021

ObjectivesTo evaluate the impact of Achilles tendinopathy (AT) on quality of life (QoL), work performance, healthcare utilisation and costs in adults with conservatively treated chronic midportion AT.MethodsThis cross-sectional survey-based study included 80 patients and took place in a sports medicine department of a large regional hospital in the Netherlands. Data were collected before any intervention was given. Primary outcome was the EuroQol questionnaire (EQ-5D). The EQ-5D expresses the percentage of moderate/major problems on the domains self-care, anxiety/depression, mobility, usual activities and pain/discomfort. Secondary outcomes were the number of previous healthcare visits, work performance during the period of symptoms and estimated annual direct medical and indirect costs per patient as a result of AT.ResultsAll 80 patients completed the questionnaires. The EQ-5D scores were low for the domains self-care (1%) and anxiety/depression (20%), and high for the domains mobility (66%), usual activities (50%) and pain/discomfort (89%). Patients with AT mainly reported an impact on work productivity (38%). Work absenteeism due to AT was present in 9%. The total median (IQR) number of annual healthcare visits was 9 (3–11). The total mean (SD) estimated annual costs were €840 (1420) per patient with AT (mean (SD) US$991 (1675)).ConclusionsThis study shows the large impact of AT on QoL and work productivity. This study also provides new information about the socioeconomic impact of AT, which emphasises that this common and longstanding disease causes substantial costs. These findings stress the need for optimised treatment and improved preventive interventions for AT.Trial registration numberNCT02996409.
Dynamic Changes in Aortic Stiffness after Substantial Weight Loss by Laparoscopic Sleeve Gastrectomy in Patients with Obesity: A 1-Year Follow-Up Study
Authors: Gul Murat , Inci Sinan , Aktas Halil , Yildirim Oguz , Alsancak Yakup , Ozkan Namik 
Published: March 2021

Arterial stiffness has been identified as a powerful and independent risk factor for cardiovascular disease. Obesity is associated with an increased risk of aortic stiffness (AS) and adverse cardiovascular events. Herein, we aimed to evaluate the effects of weight loss after laparoscopic sleeve gastrectomy (LSG) on AS in individuals with morbid obesity by using the transthoracic echocardiography (TTE). A total of 53 patients with obesity (17 males, 36 females) who underwent LSG and did not have any known heart disease were included in the study. The AS parameters were measured with TTE. The demographic and echocardiographic data of the patients were studied before, at 1 month and 12 months after surgery. The mean age of the study group was 34.41±11.62, 68% of whom were female. There were no significant differences in terms of the standard echocardiography and Doppler measurements as compared with preoperative values (all p>0.05). When the elastic parameters of the aorta were compared, no significant differences were detected regarding aortic strain (%) ((16.28±4.11) vs (16.68±4.56), p=(0.998)), distensibility (cm2/dyn) ((6.74±1.78) vs (7.03±2.31), p=(0.997)) and Aortic Stiffness Index values ((10.73±3.84) vs (10.63±3.34), p=0.998) between baseline and first month after surgery. In the 12-month follow-up, it was determined that the aortic strain ((16.28±4.11) vs (22.74±5.79), p≤0.001) and distensibility ((6.74±1.78) vs (10.34±3.059), p<0.001)) values increased at significant levels. Weight loss by LSG improves arterial stiffness parameters in patients with obesity over a 1-year follow-up.
Two new freshwater planarian species (Platyhelminthes: Tricladida: Dugesiidae) partially sympatric in Argentinean Patagonia
Authors: Lenguas Francavilla M. , Negrete L. , Martínez-Aquino A. , Damborenea C. , Brusa F. 
Published: March 2021

Girardia Ball, 1974 is the most diverse and widely distributed genus of the family Dugesiidae (Platyhelminthes: Continenticola) in the Neotropical region. Seven out of the 52 species of the genus are known for Argentina. The Somuncurá Plateau is a region in northern Patagonia with several endemic flora and fauna, but little is known about the free-living Platyhelminthes. We describe two new species of Girardia partially inhabiting in sympatry in the Somuncurá Plateau: Girardia somuncura sp. nov. and Girardia tomasi sp. nov. The identification criteria that we followed was an integrative taxonomic approach based on morphological and molecular data. Thus, we used anatomical features focused on the reproductive system, together with a phylogenetic analysis, using a mitochondrial (COI barcode region) genetic marker. This study is the first phylogenetic analysis of the genus Girardia in which we include the southernmost representatives of America here described, thus making it possible to incorporate them in global phylogenies.
Ferromagnetic and spin-glass like transition in the q-neighbor Ising model on random graphs
Authors: Krawiecki A. 
Published: March 2021

AbstractTheq-neighbor Ising model is investigated on homogeneous random graphs with a fraction of edges associated randomly with antiferromagnetic exchange integrals and the remaining edges with ferromagnetic ones. It is a nonequilibrium model for the opinion formation in which the agents, represented by two-state spins, change their opinions according to a Metropolis-like algorithm taking into account interactions with only a randomly chosen subset of theirqneighbors. Depending on the model parameters in Monte Carlo simulations, phase diagrams are observed with first-order ferromagnetic transition, both first- and second-order ferromagnetic transitions and second-order ferromagnetic and spin-glass-like transitions as the temperature and fraction of antiferromagnetic exchange integrals are varied; in the latter case, the obtained phase diagrams qualitatively resemble those for the dilute spin-glass model. Homogeneous mean-field and pair approximations are extended to take into account the effect of the antiferromagnetic exchange interactions on the ferromagnetic phase transition in the model. For a broad range of parameters, critical temperatures for the first- or second-order ferromagnetic transition predicted by the homogeneous pair approximation show quantitative agreement with those obtained from Monte Carlo simulations; significant differences occur mainly in the vicinity of the tricritical point in which the critical lines for the second-order ferromagnetic and spin-glass-like transitions meet.Graphic abstract
Laugh your way to persuasive communication
Authors: Yaffe Philip 
Published: March 2021

Each "Communication Corner" essay is self-contained; however, they build on each other. For best results, before reading this essay and doing the exercise, go to the first essay "How an Ugly Duckling Became a Swan," then read each succeeding essay.
Have you ever noticed that people who tell jokes well usually give good speeches? This is not a coincidence. Telling jokes and giving speeches have more in common than it might appear. We can benefit from these similarities.
Changed avian assemblage of Savitribai Phule Pune University campus in last four decades
Authors: Choudaj Kiran , Wankhade Varsha 
Published: March 2021

Savitribai Phule Pune University is known for its biodiversity in Pune. In the present study, we have analyzed changes which have occurred on the campus and surrounding area over the last 40 years. Of the 90 bird species reported in the campus and Khadki pond in 1976, we failed to notice 34 species in 2018. A major reason for the decline in bird diversity could be changes in the campus habitat from low scrub jungle, fallow lands and grassland to buildings, roads, and exotic plantations. Increase in human settlement surrounding the campus may also be a contributing factor. Replacing exotic plants by indigenous plant species and control of land use can prevent further loss of biodiversity.
Distribution and diversity of climbing species in Papum Pare District of Arunachal Pradesh, India
Authors: Kashung Soyala , Gajurel Padma Raj , Singh Binay 
Published: March 2021

An investigation on the taxonomic diversity of climbing plants occurring in Papum Pare District, Arunachal Pradesh, northeastern India was conducted. A total of 187 species distributed over 55 families and 117 genera were collected and identified from the various forest areas of the district. Apart from one gymnosperm and five pteridophytes, all species belong to the angiosperm group. Fabaceae, Cucurbitaceae, Convolvulaceae, Vitaceae, and Apocynaceae were found to be the most dominant. Piper, Dioscorea, Ipomoea, and Rubus were dominant at the genus level. The study also revealed that majority of the climbers adopted twining mechanisms (43.85%) to ascend their host. It was found that a majority of the species were distributed below 500m with a decrease in diversity with altitudinal increment. The diversity of species above 1,500m was very limited where only 23 species were reported. Habitat degradation because of rapid developmental activities with limitation of the supporting tree species was found to be a serious threat to climbing plants.
The Picture of Language in Seeing the Nature of God in Kabbalah and Tantra
Authors: Martin Paul C. 
Published: March 2021

Abstract
In this paper I aim to show how a meaningful correlation can be made between the two mystical traditions of Kabbalah and Tantra by drawing upon ideas from the philosophy of art and aesthetics, especially as it relates to the intersection of images and words. A common leitmotif is that both of these traditions nominate a perception of God which through its manifold expression can be realized as a work of art. It represents a creative response to envisioning or “seeing” the divine realm, one that is renderable by the artist-writer on the material support of the enunciation. As an intentional account of his experiential consciousness of being with God, the artifact is aesthetically designed for the edification of the reader. A comparative connection between the two traditions can be found in this depictive and linguistic endeavor.
Expulsion Legitimacy from the Perspective of International and Emirati Law
Authors: Zakaria Aliaa , Barafi Jamal 
Published: March 2021

Abstract
Every country has the right to restrict the entry, stay, and deportation of aliens in accordance with international law. However, although States have the right to expel aliens, the expulsion mechanism is subject to domestic and international norms. In the United Arab Emirates, legislation has been enacted to deal with the significant number of aliens residing in or visiting the country.
This study clarifies the legality of expulsion and the safeguards stipulated in international and UAE federal law for this procedure, by reviewing the rulings of international and Emirati courts. It concludes that, although international law allows States to regulate foreign affairs in their territory, the mechanism for implementing expulsion and deportation remain subject to legal and judicial guarantees. The paper recommends that deportation decisions be made with caution. It clarifies the weaknesses of the international instruments pertaining to such decisions, and also commends the UAE’s experience in this field.