bluuebunny/crossref_metadata_2025_split huggingface dataset:
Peningkatan Kemampuan Pemahaman dan Komunikasi Matematis Siswa SMK Melalui Pembelajaran Konstruktivisme Model Needha
Authors: Gardenia Nia 
Published: March 2018

<p>This study aims to determine the attainment and increase the ability of understanding and communication students’ mathematical vocational high school (SMK) through learning by using constructivist Needham Model. This research is a quasi-experiment design with a control group of non-equivalence using purposive sampling technique. The population in this study were all students of class X SMK Pajajaran Bandung scattered in 6 classes, and that the research sample is as many as two classes. Of the two classified into two groups, the group learning by using Needham and conventional models. Class X PM used as the experiment group, while X AP classes serve as a control group. The data were analyzed quantitative and qualitative. Quantitative analysis was performed by using tt-test t’ test, Mann-Whitney U test. Qualitative analysis was conducted to determine the attitude of the students after getting a constructivism learning of Needham Model. Data collected through the test and attitude scale. The results showed that, (1) Improving the ability of mathematical understanding of students who get teaching Needham Model better than students who received conventional learning, (2) Increasing the capability of mathematical communication students who has learning with Needam Model better than students who received conventional learning, (3) in general, students showed a positive attitude towards learning mathematics, problems and communication as well as to study of mathematics that uses Needham Models</p><p> <strong>Keywords: </strong>Constructivism Learning, Needham Model, The ability of mathematical understanding, mathematical communication skills.</p>
Penggunaan Model Pembelajaran Science Environment Technology and Society (Sets) untuk Meningkatkan Kemampuan Berpikir Kritis dan Sikap Ilmiah
Authors: Maimunah Maimunah 
Published: March 2018

<p>This study aimed to determine the improvement of critical thinking skills and student’s scientific attitudes on the colloidal material by applying the learning model science environment technology and society (SETS). The method was used in this study is quasi-experimental research design "Pretest-Posttest Nonequivalent Control Group Design". The sample in this study was a class XI student at one of SMAN in Majalengka, with totaling 62 students. Data collected through a written test and observation sheets. The results showed that SETS learning for colloidal material can enhance student’s critical thinking skills with N-Gain of 42% (moderate category) and the student’s scientific attitude was 72,7 % (excellent category). Increasing student’s critical thinking skills class experiment also differed significantly from the control class. Thus, learning chemistry with SETS learning model should be developed for the implementation of SETS learning can improve critical thinking skills and students’ scientific attitudes.</p><p> <strong>Keywords</strong>: colloidal systems, critical thinking skills, science environment technology and society (SETS), scientific attitude. </p>
Analisis Kemampuan Berpikir Kreatif Kimia Ditinjau dari Adversity Quotient, Sikap Ilmiah dan Minat Belajar
Authors: Nursa'adah Fatwa Patimah , Rosa Novrita Mulya 
Published: March 2018

<p>Tujuan dari penelitian adalah untuk menganalisis kemampuan berpikir kraetif kimia ditinjau dari adversity quotient, sikap ilmiah dan minat belajar. Subjek penelitian adalah mahasiswa Program Studi Pendidikan Matematika Universitas Indraprasta PGRI semester genap tahun akademik 2014/2015 , yang mengikuti perkuliahan Kimia Dasar II berjumlah 66 orang. Pemilihan kelas sampel menggunakan teknik multistage random sampling. Teknik pengumpulan data dilakukandengan melaksanakan tes kemampuan berpikir kreatif kimia berupa soal uraian. Data adversity quotient, sikap ilmiah dan minat belajar diperoleh dengan menggunakan angket skala sikap.Analisa data penelitian menggunakan korelasi dan regresi dengan bantuan program SPSS. Dari hasil penelitian disimpulkan bahwa ada pengaruh adversity quotient, sikap ilmiah dan minat belajar secara bersama-sama terhadap kemampuan berpikir kreatif dengan korelasi sebesar 0,359 dan koefisien determinasi sebesar 12,9%. Pengujian Signifikasi Koefisien Regresi diperoleh nilai sig 0,034 dan F<sub>hitung</sub> = 3,066. Uji pengaruh masing-masing variabel diperoleh terdapat pengaruh adversity quotient terhadap kemampuan berpikir kreatif dengan nilai sig = 0,012 dan t<sub>hitung</sub> = 2,595. Tidak terdapat pengaruh sikap ilmiah terhadap kemampuan berpikir kreatif dengan nilai sig = 0,646 dan t<sub>hitung</sub> = - 0,461. Tidak terdapat pengaruh minat belajar terhadap kemampuan berpikir kreatif dengan nilai sig = 0,508 dan t<sub>hitung</sub> = - 0,666.</p><p> </p><p>Kata kunci : kemampuan berpikir kreatif</p>
Pengaruh Kemampuan Berpikir Kritik dan Konsep Diri Terhadap Prestasi Belajar Matematika
Authors: Katarina Dona 
Published: March 2018

The direct effect of the ability to think criticism of the concept of self-esteem, self-concept directly determine the effect of students' mathematics achievement and to determine the effect of indirect criticism of the ability to think mathematics achievement through student self-concept. Data analysis using descriptive statistical methods and testing techniques of data analysis requirements. The results showed: (1). there are a significant direct influence thinking skills of criticism and self-concept of the student mathematics achievement. (2). there is a significant direct influence thinking skills critique of mathematics achievement. (3). there is a significant direct effect on the achievement of self-concept study mathematics. (4) there is an indirect effect is not significant ability to think criticism of mathematics achievement through self-concept.
Microstructural characterization of dynamic recrystallization in hot deformed LDX2101
Authors: Fang Yiliu , Gao Zhengyuan , Bai Wanjin , Sun Pengfei 
Published: March 2018

Abstract
The deformation behavior and dynamic recrystallization (DRX) mechanism of lean duplex stainless steel 2101 under hot compression were studied by means of optical microscopy and electron backscatter diffraction. Hot compression tests were performed at a temperature of 1 100 °C and strain rate of 0.01 s−1, and also at a temperature of 1 000 °C and strain rate of 30 s−1. The flow curves exhibit typical DRX characteristics, and the flow stress increases to a peak stress followed by work softening at higher strains. When the alloy was deformed at 1 000 °C and the strain rate of 30 s−1, new ferrite grains formed through a distinct DRX mechanism occurring in the vicinity of the δ/γ interface. When the alloy was deformed at 1 100 °C and strain rate of 0.01 s−1, a small number of fine γ phase grains distributed both in the δ ferrite matrix and at δ/γ interfaces. The refinement of γ phase was expected to form by dynamic strain induced δ to γ transformation and discontinuous dynamic recrystallisation (DDRX) mechanisms.
Computer screening for palliative care needs in primary care: a mixed-methods study
Authors: Mason Bruce , Boyd Kirsty , Steyn John , Kendall Marilyn , Macpherson Stella , Murray Scott A 
Published: March 2018

BackgroundThough the majority of people could benefit from palliative care before they die, most do not receive this approach, especially those with multimorbidity and frailty. GPs find it difficult to identify such patients.AimTo refine and evaluate the utility of a computer application (AnticiPal) to help primary care teams screen their registered patients for people who could benefit from palliative care.Design and settingA mixed-methods study of eight GP practices in Scotland, conducted in 2016–2017.MethodAfter a search development cycle the authors adopted a mixed-methods approach, combining analysis of the number of people identified by the search with qualitative observations of the computer search as used by primary care teams, and interviews with professionals and patients.ResultsThe search identified 0.8% of 62 708 registered patients. A total of 27 multidisciplinary meetings were observed, and eight GPs and 10 patients were interviewed. GPs thought the search identified many unrecognised patients with advanced multimorbidity and frailty, but were concerned about workload implications of assessment and care planning. Patients and carers endorsed the value of proactive identification of people with advanced illness.ConclusionGP practices can use computer searching to generate lists of patients for review and care planning. The challenges of starting a conversation about the future remain. However, most patients regard key components of palliative care (proactive planning, including sharing information with urgent care services) as important. Screening for people with deteriorating health at risk from unplanned care is a current focus for quality improvement and should not be limited by labelling it solely as ‘palliative care’.
Acceptability of text messages for safety netting patients with low-risk cancer symptoms: a qualitative study
Authors: Hirst Yasemin , Lim Anita Wey Wey 
Published: March 2018

BackgroundSafety netting is an important diagnostic strategy for patients presenting to primary care with potential (low-risk) cancer symptoms. Typically, this involves asking patients to return if symptoms persist. However, this relies on patients re-appraising their symptoms and making follow-up appointments, which could contribute to delays in diagnosis. Text messaging is increasingly used in primary care to communicate with patients, and could be used to improve safety netting.AimTo explore the acceptability and feasibility of using text messages to safety net patients presenting with low-risk cancer symptoms in GP primary care (txt-netting).Design and settingQualitative focus group and interview study with London-based GPs.MethodParticipants were identified using convenience sampling methods. Five focus groups and two interviews were conducted with 22 GPs between August and December 2016. Sessions were audiorecorded, transcribed verbatim, and analysed using thematic analysis.ResultsGPs were amenable to the concept of using text messages in cancer safety netting, identifying it as an additional tool that could help manage patients and promote symptom awareness. There was wide variation in GP preferences for text message content, and a number of important potential barriers to txt-netting were identified. Concerns were raised about the difficulties of conveying complex safety netting advice within the constraints of a text message, and about confidentiality, widening inequalities, and workload implications.ConclusionText messages were perceived to be an acceptable potential strategy for safety netting patients with low-risk cancer symptoms. Further work is needed to ensure it is cost-effective, user friendly, confidential, and acceptable to patients.
An X-Ray Imaging Survey of Quasar Jets: The Complete Survey
Authors: Marshall H. L. , Gelbord J. M. , Worrall D. M. , Birkinshaw M. , Schwartz D. A. , Jauncey D. L. , Griffiths G. , Murphy D. W. , Lovell J. E. J. , Perlman E. S. , Godfrey L. 
Published: March 2018

Abstract
We present Chandra X-ray imaging of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like structure. X-rays are detected from 59% of 56 jets. No counter-jets were detected. The core spectra are fitted by power-law spectra with a photon index Γ
x
, whose distribution is consistent with a normal distribution, with a mean of 1.61+0.04
−0.05 and dispersion of 0.15+0.04
−0.03. We show that the distribution of α

rx
, the spectral index between the X-ray and radio band jet fluxes, fits a Gaussian with a mean of 0.974 ± 0.012 and dispersion of 0.077 ± 0.008. We test the model in which kiloparsec-scale X-rays result from inverse Compton scattering of cosmic microwave background photons off the jet’s relativistic electrons (the IC-CMB model). In the IC-CMB model, a quantity Q computed from observed fluxes and the apparent size of the emission region depends on redshift as (1 + z)3+α
. We fit Q ∝ (1 + z)
a
, finding a = 0.88 ± 0.90, and reject at 99.5% confidence the hypothesis that the average α

rx
depends on redshift in the manner expected in the IC-CMB model. This conclusion is mitigated by a lack of detailed knowledge of the emission region geometry, which requires deeper or higher resolution X-ray observations. Furthermore, if the IC-CMB model is valid for X-ray emission from kiloparsec-scale jets, then the jets must decelerate on average: bulk Lorentz factors should drop from about 15 to 2–3 between parsec and kiloparsec scales. Our results compound the problems that the IC-CMB model has in explaining the X-ray emission of kiloparsec-scale jets.
The SAMI Galaxy Survey: Gravitational Potential and Surface Density Drive Stellar Populations. I. Early-type Galaxies
Authors: Barone Tania M. , D’Eugenio Francesco , Colless Matthew , Scott Nicholas , Sande Jesse van de , Bland-Hawthorn Joss , Brough Sarah , Bryant Julia J. , Cortese Luca , Croom Scott M. , Foster Caroline , Goodwin Michael , Konstantopoulos Iraklis S. , Lawrence Jon S. , Lorente Nuria P. F. , Medling Anne M. , Owers Matt S. , Richards Samuel N. 
Published: March 2018

Abstract
The well-established correlations between the mass of a galaxy and the properties of its stars are considered to be evidence for mass driving the evolution of the stellar population (SP). However, for early-type galaxies (ETGs), we find that g − i color and stellar metallicity [Z/H] correlate more strongly with gravitational potential Φ than with mass M, whereas SP age correlates best with surface density Σ. Specifically, for our sample of 625 ETGs with integral-field spectroscopy from the Sydney-AAO Multi-object Integral-field Galaxy Survey, compared to correlations with mass, the color–Φ, [Z/H]–Φ, and age–Σ relations show both a smaller scatter and a lower residual trend with galaxy size. For the star formation duration proxy [α/Fe], we find comparable results for trends with Φ and Σ, with both being significantly stronger than the [α/Fe]–M relation. In determining the strength of a trend, we analyze both the overall scatter, and the observational uncertainty on the parameters, in order to compare the intrinsic scatter in each correlation. These results lead us to the following inferences and interpretations: (1) the color–Φ diagram is a more precise tool for determining the developmental stage of the SP than the conventional color–mass diagram; and (2) gravitational potential is the primary regulator of global stellar metallicity, via its relation to the gas escape velocity. Furthermore, we propose the following two mechanisms for the age and [α/Fe] relations with Σ: (a) the age–Σ and [α/Fe]–Σ correlations arise as results of compactness-driven quenching mechanisms; and/or (b) as fossil records of the

relation in their disk-dominated progenitors.
Sun-sized Water Vapor Masers in Cepheus A
Authors: Sobolev A. M. , Moran J. M. , Gray M. D. , Alakoz A. , Imai H. , Baan W. A. , Tolmachev A. M. , Samodurov V. A. , Ladeyshchikov D. A. 
Published: March 2018

Abstract
We present the first VLBI observations of a Galactic water maser (in Cepheus A) made with a very long baseline interferometric array involving the RadioAstron Earth-orbiting satellite station as one of its elements. We detected two distinct components at −16.9 and 0.6 km s−1 with a fringe spacing of 66 μas. In total power, the 0.6 km s−1 component appears to be a single Gaussian component of strength 580 Jy and width of 0.7 km s−1. Single-telescope monitoring showed that its lifetime was only eight months. The absence of a Zeeman pattern implies the longitudinal magnetic field component is weaker than 120 mG. The space–Earth cross power spectrum shows two unresolved components smaller than 15 μas, corresponding to a linear scale of 1.6 × 1011 cm, about the diameter of the Sun, for a distance of 700 pc, separated by 0.54 km s−1 in velocity and by 160 ± 35 μas in angle. This is the smallest angular structure ever observed in a Galactic maser. The brightness temperatures are greater than 2 × 1014 K, and the line widths are 0.5 km s−1. Most of the flux (about 87%) is contained in a halo of angular size of 400 ± 150 μas. This structure is associated with the compact H ii region HW3diii. We have probably picked up the most prominent peaks in the angular size range of our interferometer. We discuss three dynamical models: (1) Keplerian motion around a central object, (2) two chance overlapping clouds, and (3) vortices caused by flow around an obstacle (i.e., von Kármán vortex street) with a Strouhal number of about 0.3.
Estimating the Turn-around Radii of Six Isolated Galaxy Groups in the Local Universe
Authors: Lee Jounghun 
Published: March 2018

Abstract
Estimates of the turn-around radii of six isolated galaxy groups in the nearby universe are presented. From the Tenth Data Release of the Sloan Digital Sky Survey, we first select those isolated galaxy groups at redshifts z ≤ 0.05 in the mass range [0.3–1]

whose nearest-neighbor groups are located at distances larger than 15 times their virial radii. Then, we search for a gravitationally interacting web-like structure around each isolated group, which appears as an inclined streak pattern in the anisotropic spatial distribution of the neighboring field galaxies. Out of 59 isolated groups, only seven are found to possess such web-like structures in their neighbor zones, but one of them turns out to be NGC 5353/4, whose turn-around radius was already measured in a previous work and was thus excluded from our analysis. Applying the Turn-around Radius Estimator algorithm devised by Lee et al. to the identified web-like structures of the remaining six target groups, we determine their turn-around radii and show that three out of the six targets have larger turn-around radii than the spherical bound limit predicted by Planck cosmology. We discuss possible sources of the apparent violations of the three groups, including the underestimated spherical bound limit due to the approximation of the turn-around mass by the virial mass.
The Entrainment and Screening of Returning and Postspawning Adult Salmonids at Irrigation Canals of the Umatilla River, Oregon
Authors: Simpson William G. 
Published: March 2018

Abstract
Anadromous salmonids can be vulnerable to entrainment at diversion intake structures on streams, effectively trapping fish in irrigation canals and removing them from a population. Currently little is known about how the differences in timing and direction of movement among adult salmonids contribute to their risk of entrainment and how successful they are at escaping irrigation canals. Potential routes of escape include passing against water currents and through the headgate of an irrigation canal intake or by navigating through screen and bypass infrastructure primarily designed to return juvenile fish to a stream. In this study, passive integrated transponders (PIT tags) were used to track the movement of adult Chinook Salmon Oncorhynchus tshawytscha (n = 573), Coho Salmon Oncorhynchus kisutch (n = 39), and anadromous Rainbow Trout Oncorhynchus mykiss (steelhead, n = 853) as they entered areas of the Umatilla River basin (Oregon) with irrigation canals and as they attempted to escape irrigation canals after entrainment. Although adult steelhead and spring Chinook Salmon often encountered diversions at similar times, the vast majority of entrained adults were steelhead (94%). Between 2% and 8% of adult steelhead observed entering the area were entrained. The entrainment of steelhead was strongly associated with downstream movements and Umatilla River discharge below 40 m3/s. Many downstream-moving steelhead were postspawning fish (kelts). As a result, vulnerability of anadromous adults to entrainment differed by species due to the direction of their movements and how these movements coincide with canal operations and river flows. It is unlikely that the screened irrigation canals acted as an ecological sink; the majority of adult salmonids approached the screen and bypass infrastructure (≥88%) and later river detection confirmed that many had used that infrastructure to return to the river (≥47%). However, half of steelhead appeared to experience bypass delays at fish screens. Adult steelhead that approached the canal headgate after becoming trapped in the canal did not successfully return to the Umatilla River using this route. Unscreened irrigation canals elsewhere may disproportionally trap downstream-moving steelhead, like postspawning kelts, due to their propensity for entrainment and their difficulties escaping through the water intakes of irrigation canals. In streams with anadromous salmonids, fish screen and bypass infrastructure primarily designed to eliminate the permanent entrainment of juvenile fish can also prevent the removal of adult fish that may reproductively contribute to the population.
Identité professionnelle et identité religieuse. Solidarités interminoritaires chez de futur·e·s intervenant·e·s du social
Authors: Kolly Maryam 
Published: March 2018

A Bruxelles – ville dualisée d’un point de vue socio-économique et au marché scolaire ethno-ségrégé –, une part des jeunesses se caractérise par une hétérogénéité culturelle résultant de trajectoires de migration (d’hier à aujourd’hui), trajectoires qui peuvent être à la source de religiosités affirmées. Sur base d’une vingtaine d’entretiens avec de futur·e·s intervenant·e·s du social, je fais émerger dans ce papier une « parole minoritaire » (i.e. au sens de C. Guillaumin) transversale à des jeunes descendant·e·s de migrant·e·s subsaharien·ne·s et maghrébin·e·s, catholiques et musulman·e·s. Qu’il s’agisse de l’image de la « femme voilée », de la circulation de l’énoncé « Je suis Charlie » ou de la compatibilité croire religieux/travail social, le corpus des interviews fait apparaître des solidarités interminoritaires construites en contre-point des discours hégémoniques intériorisés.
Professional identity and religious identity. Inter-minority solidarity among future social workers
Authors: Kolly Maryam 
Published: March 2018

In Brussels – a city subject to duality from a socioeconomic point of view and with ethnic segregation from an educational perspective – a proportion of its youth are characterised by cultural heterogeneity resulting from (past and present) migratory pathways, which may be at the origin of asserted religiousness. Based on approximately twenty interviews with future social workers, I have brought out a cross-cutting “perspective of minorities” (according to C. Guillaumin), of young descendents of sub-Saharan and north African immigrants, both Catholic and Muslim. Whether it is the image of the “veiled woman”, the circulation of the statement “I am Charlie” or the compatibility between religious faith and social work, the corpus of interviews brings out inter-minority solidarity built as a counterpoint to internalised hegemonic rhetoric.