2,680 research outputs found
On the Special Significance of the Latest PAMELA Results in Astroparticle Physics
In continuation of their earlier measurements, the PAMELA group reported data
on antiproton flux and ratios in 2010 at much higher energies. In
past we had dealt with these specific aspects of PAMELA data in great detail
and each time we captured the contemporary data-trends quite successfully with
the help of a multiple production model of secondary antiprotons with some
non-standard ilk and with some other absolutely standard assumptions and
approximations. In this work we aim at presenting a comprehensive and valid
description of all the available data on antiproton flux and the nature of
ratios at the highest energies reported so far by the PAMELA
experiment in 2010. The main physical implication of all this would, in the
end, be highlighted.Comment: 8 pages, 6 figure
Dark Matter Annihilation and the PAMELA, FERMI and ATIC Anomalies
If dark matter (DM) annihilation accounts for the tantalizing excess of
cosmic ray electron/positrons, as reported by the PAMELA, ATIC, HESS and FERMI
observatories, then the implied annihilation cross section must be relatively
large. This results, in the context of standard cosmological models, in very
small relic DM abundances that are incompatible with astrophysical
observations. We explore possible resolutions to this apparent conflict in
terms of non-standard cosmological scenarios; plausibly allowing for large
cross sections, while maintaining relic abundances in accord with current
observations.Comment: 13 pages, 3 figures; published for publication in Physical Review
Common gauge origin of discrete symmetries in observable sector and hidden sector
An extra Abelian gauge symmetry is motivated in many new physics models in
both supersymmetric and nonsupersymmetric cases. Such a new gauge symmetry may
interact with both the observable sector and the hidden sector. We
systematically investigate the most general residual discrete symmetries in
both sectors from a common Abelian gauge symmetry. Those discrete symmetries
can ensure the stability of the proton and the dark matter candidate. A hidden
sector dark matter candidate (lightest U-parity particle or LUP) interacts with
the standard model fields through the gauge boson Z', which may selectively
couple to quarks or leptons only. We make a comment on the implications of the
discrete symmetry and the leptonically coupling dark matter candidate, which
has been highlighted recently due to the possibility of the simultaneous
explanation of the DAMA and the PAMELA results. We also show how to construct
the most general U(1) charges for a given discrete symmetry, and discuss the
relation between the U(1) gauge symmetry and R-parity.Comment: Version to appear in JHE
Pengembangan Media Cd Pembelajaran Mata Kuliah Flat Pattern Design Untuk Mahasiswa Prodi Pkk Tata Busana Ft Unp Padang
This research aims to develop a learning media in the form of CD which can assiststudents in learning Flat Pattern Design by methods Pivot Method. This study is alsoto gain an overview of the feasibility study CD media as a learning medium FlatPattern Design. This study is a Research and Development (Research andDevelopment (R & D) is a research method used to produce a particular product andtest the effectiveness of a particular product. CD learning be tested in the Departmentof Family Welfare to students S1 dressmaking class of 2014 the number of 19 people.The steps undertaken in the development of learning CD media are: 1) pendefenisianstage. 2) design phase, 3) the development stage, at this stage of the development ofdata analysis are: 1) the validity of the data analysis, 2) practicalities of data analysis,and data analysis effectiveness. Based on the results of data analysis that is performedto test the validity of validator that expert instructional media obtained a score of 4,13considered valid and validator matter experts obtained a score of 4,4 can becategorized as very valid, the practicalities of the test carried out to a small group ofstudents obtained a score of 3,8 can be categorized as practical while testing thepracticalities large group obtained a score of 4,03 can be considered a practical andeffective data analysis of student test results before and after using instructional CDmedia increased 20,4% which can be considered effective. The media are in a verydecent criteria used as a medium of learning in terms of the validity of the dataanalysis, the practicalities and effectiveness
Persepsi Mahasiswa terhadap Pelaksanaan Kegiatan Pengalaman Lapangan Industri (Pli) di Dunia USAha/ Industri Program Studi S1 dan D3 Tata Busana Jurusan Kesejahteraan Keluarga Ft Unp
This study is a descriptive research with quantitative approach that aims to describe the perception of students S1 and D3 Fashion Design Family Welfare Department towards the implementation of Field Experience Industry (PLI) in the business/industry. The population in this study is all of the students S1 and D3 Fashion Design has implemented PLI from July to Desember 2012 and from January to June 2013 amounted to 37 people, samples were taken from all populations. Data processing is doing by determining the percentage and categorization. The result of the research showed student's perception of S1 and D3 Fashion Design Family welfare of the PLI observation activities in the business/industry are in the unfavorable category (63,9%), in planning activities in the business/industry that are in well enough category (74,9%), the pre-production activities are in well enough category (79,9%), whereas the production activities are in the unfavorable category (64,2%), perception of students S1 and D3 Fashion Design on the implementation of PLI in the business/industry well enough (70,1%). For that the students needs to encreas the ebility and skill of student in order to engage in any activity's PLI in the business/industry
Motif dan Pewarnaan Batik Tulis di Dusun Giriloyo Desa Wukirsari Kecamatan Imogiri Kabupaten Bantul Provinsi Daerah Istimewa YOGYAKARTA (Studi Kasus di Industri Batik Sri Kuncoro)
This research aimed to describe the shape of classical batik motif Yogyakarta using natural dyes and synthetic dyes as raw materials in the coloring process. This research method uses qualitative descriptive research. The data collection is done by using interview, observation and documentation. In this study, the informant of this data including: the leader and some of the craftsmen who know about batik and batik dyeing in in Sri Kuncoro batik industry. Furthermore, the data reviewed and analyzed by the steps of data reduction, data presentation, and conclusion drawing. Data validation was done by triangulation to the head of the village, batik museum educators.The survey results revealed that: there are hundreds of different name of classical motifs but the kind that widely produced in batik Sri Kuncoro is the motive sidoasih, sidomukti, wahyu tumurun, truntum, srikuncoro, udan liris, and sirgunggu wiguno. The motives provided are decorative naturalist, geometric, and decorative ornament consisting of primary, complementary ornament, and IsenIsen. In coloring method using two kinds of colorings, the two substances are natural dyes from plants derived from leaves, flowers, fruit peel, bark, and roots of plants, whilst the types of synthetic dyes are using naphtol, indigosol, and rapide. For batik dyeing process, the stages starting from mordanting of natural dyes, pattern making, klowong, nerusi, ngiseni, mencolet, menembok, dyeing, sagging, then the second dyeing process is to covers down
Eksistensi Agama Shinto dalam Pelaksanaan Matsuri di Jepang
Japan is one of the nations having an extensive historical culture, as well as the system of faith or religion. The existence of religion, as a part of their life, has been streaming from the ancient time (pre-modern) up to present. The implementation of their religious life is very unique and fascinating. Other remarkable issues is about the tight relationship among the religions especially Shinto with the festival performances which is held in Japan along the seasons
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