Determination of the minimum bat sample group size to provide reliable parasite indices

2011 ◽  
pp. 202-205
Author(s):  
Art Polkanov
Keyword(s):  
Group Size ◽  
Sample Group

scholarly journals Determination of Varying Group Sizes for Pooling Procedure

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Wenjun Xiong ◽  
Hongyu Lu ◽  
Juan Ding
Keyword(s):  
Group Size ◽  
Rare Diseases ◽  
Population Heterogeneity ◽  
Sequential Procedure ◽  
Data Driven ◽  
Equal Group ◽  
Essential Step ◽  
Available Information ◽  
Individual Information

Pooling is an attractive strategy in screening infected specimens, especially for rare diseases. An essential step of performing the pooled test is to determine the group size. Sometimes, equal group size is not appropriate due to population heterogeneity. In this case, varying group sizes are preferred and could be determined while individual information is available. In this study, we propose a sequential procedure to determine varying group sizes through fully utilizing available information. This procedure is data driven. Simulations show that it has good performance in estimating parameters.

scholarly journals Determination of Priorities in Apparel Purchasing from Private Sale Websites

2017 ◽  
Vol 17 (4) ◽  
pp. 386-394 ◽  
Author(s):  
Canan Saricam ◽  
Nazan Erdumlu
Keyword(s):  
Analytical Hierarchy Process ◽  
Online Shopping ◽  
Product Information ◽  
Online Marketing ◽  
Pairwise Comparisons ◽  
Sample Group ◽  
Hierarchy Process ◽  
Hierarchical Manner

Abstract In the fast-changing internet era, private sale websites attracted an enormous interest from the consumers in especially online marketing of apparel goods. The retailers may garner more benefit if the prior issues for the consumers when they are purchasing apparel products online is known. Reviewing the literature, this study presents the factors in three groups in a hierarchical manner considering the multidimensional aspect of online purchasing of apparel products from private sale websites and then determines the prior issues for the consumers by making pairwise comparisons among these factors using analytical hierarchy process on a sample group of 100 Turkish respondents. The findings revealed that “privacy/security” in terms of online shopping criteria, “product information” in terms of apparel products criteria, and “discount ratio” in terms of private shopping criteria took highest scores of importance when the aspects were analyzed individually. Nonetheless, the parameters regarding the online shopping criteria were found to be more important than the criteria regarding the apparel products and private shopping criteria. In the end, it was also observed that these items that were found to have highest importance were actually corresponding to the risks of the situation.

scholarly journals Determination of the demographic characteristics of science and technology teachers: Sample of Istanbul

2011 ◽  
Vol 1 (3) ◽  
pp. 29-37
Author(s):  
Zafer Adıgüzel ◽  
Yasin Ünsal ◽  
Mustafa Karadağ
Keyword(s):  
Random Sample ◽  
Science And Technology ◽  
Business Case ◽  
Demographic Characteristics ◽  
Sample Group ◽  
Master Degree ◽  
Technology Teachers ◽  
Demographic Features

In this study, it is was aimed to determine point out the demographic features Science and Technology teachers in primary educations schools. Survey model and random sample approach are used in this study. The sample of the research is composed of 204 Science and Technology teachers working in İstanbul. Educations Form of the Teacher's Personal Properties is used for collecting data. As a result, the demographic characteristics of teachers of Science and Technology working in Istanbul were revealed. As a result, the sample group of teachers have only 16.18% a master degree, 66.20% appeared rented for the house. In addition, 16.66% of teachers additional revenue for the life of a business case put down as maintenance remains.

Critical factors in the determination of focus group size

1995 ◽  
Vol 12 (4) ◽  
pp. 474-475 ◽  
Author(s):  
Kwok Cho Tang ◽  
Alan Davis
Keyword(s):  
Focus Group ◽  
Group Size ◽  
Critical Factors

Penentuan Ukuran Kelompok dan Densitas Tangkasi (Tarsius tarsier) di Cagar Alam Tangkoko Batuangus, Kota Bitung, Sulawesi Utara (Group Size and Density Determination of Tankasi (Tarsius tarsier) in The Nature Reserve Tangkoko Batuangus, Bitung, North Su

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Ahmadin Awal Lumente ◽  
Saroyo Saroyo ◽  
Lalu Wahyudi ◽  
Adelfia Papu
Keyword(s):  
Group Size ◽  
Nature Reserve ◽  
Secondary Forest ◽  
Survey Method ◽  
Female Group ◽  
Survey Area ◽  
Habitat Types ◽  
Nest Location ◽  
Primitive Species

Abstrak Tangkasi (Tarsius tarsier) merupakan primata primitif (Prosimi) endemik di Pulau Sulawesi dan beberapa pulau satelitnya. Mereka menempati beberapa tipe habitat, antara lain hutan primer dan sekunder, semak, mangrove, dan pertanian. Organisasi sosialnya ialah keluarga monogami hingga multimale-multifemale. Penelitian ini dilaksanakan dengan tujuan untuk menentukan ukuran kelompok tangkasi. Penelitian dilaksanakan di Cagar Alam Tangkoko Batuangus pada bulan Juli sampai Agustus 2012. Metode yang digunakan ialah survei pada sarang tangkasi dan dilakukan penghitungan secara sensus. Luas area pengamatan ialah 100 ha yang dibagi menjadi 100 plot berukuran 100 m x 100 m. Waktu pengamatan ialah pada pagi hari pada jam 05.00-06.00 untuk menentukan lokasi sarang pada satu plot, yang selanjutnya dilakukan sensus pada sore harinya. Hasil penelitian menunjukkan bahwa di dalam 100 ha ditemukan 41 sarang atau tempat tidur tangkasi, rata-rata ukuran kelompok ialah 4,95 ± 2,26 ekor dengan modus 4. Kata kunci: ukuran kelompok, tangkasi (Tarsius tarsier), Cagar Alam Tangkoko Batuangus Abstract Tangkasi (Tarsius tarsier) is a primitive species of Sulawesi primates that is distributed in Sulawesi Island and some satellite islands. This species occupies in several habitat types, such as primary and secondary forest, shrub, mangrove, and farming area. Their social organization is monogamous family to multi-male/multi-female group. This study was conducted to determine the group size of tangkasi in the Tangkoko Batuangus Nature Reserve from July to August 2012. The survey method was used in the tangkasi nests and the census measurement was applied to the total of individuals at each nest of the 100 ha area. The 100-ha-survey area was divided into 100 plots and the size of each plot was 100 m x 100 m. The observation was carried out to determine the nest location in each plot every morning (05.00-06.00 am) and followed by the census in the afternoon. The results showed that there were 41 groups of tangkasi in the 100 ha area, the average of group size was 4,95 ± 2,26 and the modus was 4. Keywords: group size, tangkasi (Tarsius tarsier), Tangkoko Batungus Nature Reserve

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

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