380 research outputs found
The One-loop Open Superstring Massless Five-point Amplitude with the Non-Minimal Pure Spinor Formalism
No full textWe compute the massless five-point amplitude of open superstrings using the non-minimal pure spinor formalism and obtain a simple kinematic factor in pure spinor superspace, which can be viewed as the natural extension of the kinematic factor of the massless four-point amplitude. It encodes bosonic and fermionic external states in supersymmetric form and reduces to existing bosonic amplitudes when expanded in components, therefore proving their equivalence. We also show how to compute the kinematic structures involving fermionic states
SDSS J212531.92–010745.9 : the first definite PG 1159 close binary system
No full textAims. The archival spectrum of SDSS J212531.92−010745.9 shows not only the typical signature of a PG 1159 star, but also indicates the presence of a companion. Our aim was the proof of the binary nature of this object and the determination of its orbital period.
Methods. We performed time-series photometry of SDSS J212531.92−010745.9. We observed the object during 10 nights, spread over one month, with the Tübingen 80 cm and the Göttingen 50 cm telescopes. We fitted the observed light curve with a sine and simulated the light curve of this system with the nightfall program. Furthermore, we compared the spectrum of SDSS J212531.92−010745.9 with
NLTE models, the results of which also constrain the light curve solution.
Results. An orbital period of 6.95616(33) h with an amplitude of 0.354(3) mag is derived from our observations. A pulsation period could not be detected. For the PG 1159 star we found, as preliminary results from comparison with our NLTE models, T eff ∼ 90 000 K, log g ∼ 7.60, and the abundance ratio C/He ∼ 0.05 by number fraction. For the companion we obtained with a mean radius of 0.4 ± 0.1 R, a mass of 0.4 ± 0.1 M, and a temperature of 8200 K on the irradiated side, good agreement between the observed light curve and the nightfall simulation, but we do not regard those values as final
YOGA AS A BUSINESS OPPORTUNITY AND CHOICE OF PROFESSION HIGH SCHOOL GRADUATES THE HINDU MATARAM PUDJA GDE LAND ON THE ISLAND OF LOMBOK
No full textMany yoga skills needed by the institution of formal, non formal and individually to doyoga privat scattered on the island of Lombok. Activities train yoga by yoga instructor graduatesSTAHNGdePudjaMataram.Graduateswhobecameayogainstructororopeningyogabusinesshasyettoresponseproperly,itisnecessaryasearchabouttheelectionbackgroundmaterial,andmaterialprofessionyoganeededtobeabletotrainproperly.Sosynergybetweentheneedsofinstructorswiththematerialpresentedinthelecture.Itisimportantforacourseofstudyoreducationalinstitutiontofindouttheextenttowhichtherelevanceoftheprofileofgraduateswiththeabsorptionoftheworldofwork.BasedonthebackgroundthenexaminedwhySTAHNGdePudjaMataramgraduateschoosingayogainstructorasaprofession?andwhatabouttheprospectsofgraduatesofSTAHNGdeMataramPudjatoopenabusinessorbecomeayogainstructorontheislandofLombok?.Thisresearchisqualitativeresearchdesigntheresearchfield.approachtothetheorythatarerelevanttoresearch.Thetheoriesare:theoryofincentives, learning theory of R-Gagne and Neoclassical theory of economic growth. Thetechnique of data collection by observation, interview and documentation.From the results of the analysis and discussion of research it can be concluded the following:background Graduates STAHN Gde Pudja Mataram chose profession Yoga instructor, amongothers: (1) have the expertise of Yoga; (2) Yoga instructor has enough income; (3) the channellingofcustomsdoingyoga;and(4)asasideJob.ProspectsGraduateSTAHNGdeMataramPudjatoopenabusinessorbecomeayogainstructorinLombokislandbecausethefollowingthings,(1)theriseofsocialmediafeaturingyoga,(2)HotelsonLombokislandbegantoaddfacilitieswithyogaprogram;(3)ahealthylifestylebegantodevelopontheislandofLombok;(4)Lombokaremoreadvanced,causingsocietyseekingpeaceofsaturatedwiththeworldofwork;and(5)theexistenceoftheinstitutionbeganaddingextraschoolActivitieswithYoga.Keywords: Yoga, Instructors, Graduate
Pengembangan Media Pada Mata Pelajaran IPA Materi Tumbuhan Untuk Siswa
No full textThe purpose of this research is to produce products from the development of plant material media for elementary/MI students. This research uses research and development methods which use the development model procedure developed by Borg & Gall. In this research, the author limits it to the product development process. The dissemination process and large-scale testing will be written separately in another article. From this development, a product was produced in the form of media that uses the Articulate Storyline 3 application which can combine graphics and animation so it is very suitable for elementary school students. The use of computer-based technology is a way to produce or convey material using technology-based sources, where the information or material presented is stored in digital form. The author is here to provide a solution through the development of media related to plant material that can overcome problems for elementary school students
Gedächtnisrede von Pfarrer Nithack-Stahn für Herrn Geh. Med. R. Prof. Dr. Theodor Wilhelm Engelmann Berlin, d. 22. Mai 1909
No full textMedia Ekopedagik Dalam Pembelajaran (TPS) Think Pair Share Untuk Menunjang Hasil Belajar Peserta Didik
No full textIn this paper, the author tries to relate the literature study related to the comparison of Eco pedagogic media with TPS (Think Pair Share) learning in supporting student learning outcomes. From several studies such as relevant studies coupled with supporting theories, it is stated that Eco pedagogic media and TPS (Think Pair Share) models will provide broad opportunities for students to be able to think and train their reasoning so that students can then work together in groups. and can explain and provide information to other students. Of course, the information obtained is sourced from Eco pedagogic media in the form of the surrounding environment. The hope is that this Eco pedagogic media in TPS (Think Pair Share) learning can be used as a reference for every educator in creating an optimal learning atmosphere
Comparison of double sensor, skin, and rectal temperature recording for determining circadian rhthm
No full textBackground: In chronobiology studies, the circadian rhythm of core body temperature has often been monitored via rectal temperature recordings. Compliance with rectal recordings, however, limits voluntary participation and prevents a broader spectrum of investigations. With the progress of technology, systems have been developed which allow a measurement of the core body temperature from an intact skin surface, such as the Double Sensor [1], a skin surface temperature and heat-flux combining device. Studies regarding how well such systems reflect the circadian rhythm of core body temperature, however, are lacking.
Material & Methods: As part of the 2nd Berlin BedRest Study (BBR2-2), subjects underwent micro-g simulated conditions, i.e. 6° head-down tilt bed-rest. On bed-rest day 49, 24 hours temperature profiles were obtained in seven health men by a single skin surface temperature sensor and the Double Sensor, each placed at forehead (Tfhd, DSfhd) and sternum (Tste, DSste), and by a rectal probe (Trec). The degree of parallelism between measured temperature variables was assessed by calculating the Pearson correlation coefficient r. Rhythm characteristics determined by fitting a single cosine curve included MESOR, amplitude, and acrophase, and were statistically tested for significance by Student's paired t- test.
Results: Averaged value (± SD) of Pearson’s r was .867 (.059), .797 (.097), .519 (.373), -.021 (.549) for correlation between Trec with DSfhd, Tfhd, DSste, and Tste, respectively. The correlation mean demonstrated a good parallelism between Trec and temperatures obtained from the forehead. Regarding the rhythm parameters MESOR, amplitude, and acrophase, no significant difference was found between Trec and DSfhd, but between Tfhd and DSfhd as well as between Tfhd and Trec.
Discussion & Conclusions: Not the skin surface temperature recordings, but the temperatures of the Double Sensor from the forehead seem promising for determining the circadian rhythm of core body temperature in occupational and environmental medicine on earth and space, where the use of rectal probes is not feasible or desired.
References: 1. Gunga HC, Sandsund M, Reinertsen RE, Sattler F and Koch J. A non-invasive device to continuously determine heat strain in humans. Journal of Thermal Biology 33: 297-307, 2008
PENGEMBANGAN INSTRUMEN PENGUKURAN KARAKTER DIMENSI KEMANDIRIAN DAN INTEGRITAS DIRI PADA SISWA SD DI KABUPATEN BULELENG
No full textTujuan umum penelitian ini adalah untuk mengembangkan instrumen pengukuran karakter pada para remaja siswa di Provinsi Bali. Untuk mencapai tujuan penelitian ini, dilakukan penelitian pengembangan dengan tahap-tahap sebagai berikut: (1) fase pengembangan, dan (2) fase penilaian. Penelitian ini merupakan jenis penelitian pengembangan atau research and development (R&D). Subyek penelitian ini adalah siswa SD di Kabupaten Buleleng, yang dipilih dengan menggunakan teknik random. Produk penelitian ini adalah menghasilkan instrument pengukuran karakter dimensi kemandirian dan integritas diri. Penelitian pengembangan instrument ini mengikuti sepuluh langkah pengembangan instrumen dari Anastasi dan Fernandez yang dideskripsikan sebagai berikut. Pencapaian tujuan penelitian pada tahun pertama, ditempuh langkah-langkah (1) menetapkan tujuan tes, (2) analisis referensi, sumber belajar, dan merumuskan grand konsep variabel yang diukur, (3) menyusun kisi-kisi, (5) menulis butir tes, (6) telaah butir tes (expert validity) (7) Revisi/perbaikan butir tes. Sedangkan pada tahun kedua, dilanjutkan dengan langkah (8) uji coba tes secara empiric terbatas, (9) uji coba tes secara empiric pada skop lebih luas, (10) merakit tes. Analisis data uji coba tahun pertama dilakukan dengan formula Lawshe, dan analisis data uji coba tahun kedua dilakukan dengan analisis klasik dilanjutkan dengan analisis factor confirmatory. Kontribusi penelitian ini diharapkan dapat dijadikan sebagai salah satu alternatif rujukan untuk memenuhi kebutuhan aktivitas pembelajaran dalam rangka membangun karakter siswa sesuai dengan tuntutan era society 5.0
CHANGES IN VITAMIN D IN OVERWINTERERS IN ANTARCTICA
No full textIntroduction
Humans living and working in Antarctica face several physical and psychological demands such as very low
temperatures, altered circadian rhythm, lengthy periods of complete darkness (PCD) from may to august, isolation
and psychosocial stress. We assessed changes in Vitamin D concentration in overwinterers who inhabited the
German Research Station Neumayer III (RSN3) for 13 months from 2007 to 2012 and evaluated these changes
for dependency on month (M), season (S), gender (G), periodicity (P), fat mass (FM) and initial Vitamin D
concentrations (IVDC). We hypothesized the existence of dependency of VD from these parameters during the
overwinterers’ long-term stay in Antarctica.
Material & Methods
25-OH-Vitamin D concentrations (VDC) were determined from venous blood samples of n=43 inhabitants of the
RSN3 (28 male, 15 female) once per month, as were their FM using a scale and the bioimpedance-analysis.
Resulting data were statistically analyzed using respective statistical software for dependency on M, S, G, P, FM
and IVDC, as well as between VDC and IVDC after categorization in sufficient (SU), insufficient (IN) and deficient
(DE) IVDC.
Results
The evaluation revealed a decrease in VDC during PCD with dependency from M (p<0.001) and S (p<0.001), but
not from G (p=0.78). 49% of the participants had a VDC below 30nmol/l during PCD. A fitted sine curve described
the P of VDC (p<0.0001, r=0.492, r2=0.242). IVDC exhibited a positive relationship with FM (n.sig. p=0.129,
r=0.300, r2=0.09). VDC during PCD exhibited a positive relationship with IVDC (sig. P<0.001, r=0.533, r2=0.284).
There also was a dependency from IVDC categorized for SU, IN and DE of VDC during PCD (p<0.01) and VDC
post PCD (p<0.01).
Discussion & Conclusions
Long terms stays of humans in the antarctic German Research Station Neumayer III are associated with a
considerable decrease in 25-OH-Vitamin D concentrations; these changes follow a periodicity. We found no
dependency from gender. Our analysis revealed the tendency that a higher fat mass may be associated with
higher initial Vitamin D concentrations. In addition we found that higher initial Vitamin D concentrations may
protect from deficiencies during and post the darkness periods
Comparison of double sensor, skin, and rectal temperature recordings for determining circadian rhythm
No full textIntroduction
In chronobiology studies, the circadian rhythm of core body temperature has often been monitored via rectal
temperature recordings. Compliance with rectal recordings, however, limits voluntary participation and prevents a
broader spectrum of investigations. With the progress of technology, systems have been developed which allow a
measurement of the core body temperature from an intact skin surface, such as the Double Sensor [1], a skin
surface temperature and heat-flux combining device. Studies regarding how well such systems reflect the
circadian rhythm of core body temperature, however, are lacking.
Material & Methods
As part of the 2nd Berlin BedRest Study (BBR2-2), subjects underwent micro-g simulated conditions, i.e. 6° headdown
tilt bed-rest. On bed-rest day 49, 24 hours temperature profiles were obtained in seven healthy men by a
single skin surface temperature sensor and the Double Sensor, each placed at forehead (Tfhd, DSfhd) and sternum
(Tste, DSste), and by a rectal probe (Trec). The degree of parallelism between measured temperature variables was
assessed by calculating the Pearson correlation coefficient r. Rhythm characteristics determined by fitting a single
cosine curve included MESOR, amplitude, and acrophase, and were statistically tested for significance by
Student's paired t-test.
Results
Averaged value (± SD) of Pearson’s r was .867 (.059), .797 (.097), .519 (.373), -.021 (.549) for correlation
between Trec with DSfhd, Tfhd, DSste, and Tste, respectively. The correlation mean demonstrated a good parallelism
between Trec and temperatures obtained from the forehead. Regarding the rhythm parameters MESOR,
amplitude, and acrophase, no significant difference was found between Trec and DSfhd, but between Tfhd and DSfhd
as well as between Tfhd and Trec.
Discussion & Conclusions
Not the skin surface temperature recordings, but the temperatures of the Double Sensor from the forehead seem
promising for determining the circadian rhythm of core body temperature in occupational and environmental
medicine on earth and space, where the use of rectal probes is not feasible or desired
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