Plasmon dispersion in quasi-one and one-dimensional systems with non-magnetic impurities

We calculate the plasmon dispersion in quasi-one-dimensional quantum wires, in the presence of non-magnetic impurities, taking into consideration the memory function formalism and the role of the forward scattering. The plasma frequency is reduced by the presence of impurities. We also calculate, analytically, the plasmon dispersion in the Born approximation, for the scattering of the electrons by the non-magnetic impurities. We compare our result with the numerical results of Sarma and Hwang.Comment: 12 pages, no figures, Physica E, 40, 474, (2008

Valuation and modeling of EQ-5D-5L health states using a hybrid approach

Background: The EQ-5D instrument is the most widely used preference-based health-related quality of life questionnaire in cost-effectiveness analysis of health care technologies. Recently, a version called EQ-5D-5L with 5 levels on each dimension was developed. This manuscript explores the performance of a hybrid approach for the modeling of EQ-5D-5L valuation data. Methods: Two elicitation techniques, the composite time trade-off, and discrete choice experiments, were applied to a sample of the Spanish population (n=1000) using a computer-based questionnaire. The sampling process consisted of 2 stages: stratified sampling of geographic area, followed by systematic sampling in each area. A hybrid regression model combining composite time trade-off and discrete choice data was used to estimate the potential value sets using main effects as starting point. The comparison between the models was performed using the criteria of logical consistency, goodness of fit, and parsimony. Results: Twenty-seven participants from the 1000 were removed following the exclusion criteria. The best-fitted model included 2 significant interaction terms but resulted in marginal improvements in model fit compared to the main effects model. We therefore selected the model results with main effects as a potential value set for this methodological study, based on the parsimony criteria. The results showed that the main effects hybrid model was consistent, with a range of utility values between 1 and -0.224. Conclusion: This paper shows the feasibility of using a hybrid approach to estimate a value set for EQ-5D-5L valuation data.</p

Gambaran Kepribadian Berdasarkan Tes Disc Mahasiswa Fakultas Kedokteran Universitas Sam Ratulangi Manado Semester 1 Tahun 2016

: Personality is one of the factors that influence human behavior. Personality factor has a supporting value to the success rate of a medical student. The purpose of this research was to detemine the personality based on DISC test to the first semester student of Faculty of Medicine at Sam Ratulangi University year 2016. This was a descriptive research using cross sectional study method. The subjects of research were all first semester student of Medical Faculty at Sam Ratulangi University year 2016 that have completed the inclusion criteria amounted to 101 people. The result showed that subjects of research that have a personality dominant type S were 47 subjects (46,53%), personality dominant type C were 34 subjects (33,66%), personality dominant type I were 18 subjects (17,82%), and personality dominant type D were 2 subjects (1,99%). From the result of the research, it can be concluded that personality based on DISC test to the first semester student of Medical Faculty at Sam Ratulangi University year 2016 the subjects of research mostly have a personality dominant type S total 47 subjects (46,53%)

Pengaruh Pelatihan, Penempatan Kerja, Dan Kompensasi Terhadap Kinerja Karyawan Pada PT. Bank Sulutgo Kantor Pusat Manado

Sumber daya manusia memiliki peran penting bagi Perusahaan, karena sumber daya manusia merupakan kombinasi antara tenaga, fisik, ide, bakat, pengetahuan, kreatifitas dan keterampilan yang dibutuhkan untuk menggerakan Perusahaan. Kinerja seorang karyawan merupakan awal yang penting bagi terciptanya kinerja Perusahaan. Penelitian ini bertujuan untuk mengetahui pengaruh pelatihan, penempatan kerja, dan kompensasi terhadap kinerja karyawan PT. Bank Sulutgo Kantor Pusat Manado. Sampel dalam penelitian ini berjumlah 103 orang. Metode analisis yang digunakan adalah asosiatif dengan teknis analisis regresi linear berganda. Hasil penelitian menunjukkan pelatihan, penempatan kerja, dan kompensasi baik secara simultan maupun parsial mempunyai pengaruh positif terhadap kinerja karyawan. Pimpinan PT. Bank Sulutgo Kantor Pusat Manado sebaiknya mempertahankan dan mengembangkan pelatihan yang telah dilaksanakan setiap tahunnya dan juga memperhatikan penempatan kerja dan kompensasi untuk meningkatkan kinerja karyawan dalam pelaksanaan tugasnya

Exploding the Role of Religious Institutions in Combating Child Trafficking in Nigeria

Human trafficking is a global challenge especially in the 21stCentury. Nigeria like most developing countries is doing its best in addressing the menace of child trafficking. In view of the fact that religious institutions are highly respected in Nigeria, this paper intends to adopt a doctrinal methodology in examining the menace of child trafficking in Nigeria, by using the perspective of Islam and Christianity. Moreover, also seeing the role that can be played by the Supreme Council of Islamic Affairs and the Christian Association of Nigeria in the crusade against child trafficking in Nigeria Perdagangan manusia merupakan sebuah tantangan global pada abad ke-21. Sebagaimana negara berkembang pada umumnya, Nigeria melakukan upaya yang terbaik guna menangani ancaman perdagangan anak. Mengingat bahwa institusi keagamaan sangat dihormati di Nigeria, artikel ini bermaksud untuk mengadopsi metodologi doktrin dalam mengkaji ancaman perdagangan anak di Nigeria, melalui perspektif agama Islam dan agama Kristen perihal perdagangan anak. Selain itu, juga melihat peran yang dipegang oleh Dewan Tinggi Urusan Islam dan Asosiasi Umat Kristen Nigeria dalam perjuangan melawan perdagangan anak di Nigeria

Gambaran Makroskopik Dan Mikroskopik Pankreas Pada Hewan Coba Postmortem

: Medicolegal examination is beneficial in police investigation inter alia to determine the time of death and causes as well as mechanisms of death. Postmortem macroscopic and microscopic changes could be alternatives to estimate the time of death. This study was aimed to obtain the microscopic and macroscopic postmortem changes in pancreas based on the variation of time up to 48 hours. This was a descriptive observational study using two domestic pigs as animal model. Pancreas samples were obtained at time intervals as follows: 0 hour, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 8 hours, 10 hours, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, 24 hours, 26 hours, 28 hours, 30 hours, 33 hours, 36 hours, 39 hours, 42 hours, and 48 hours postmortem. The macroscopic examination showed changes in its consistency at 8 hours postmortem, followed by changes in color, consistency, and length during 39 hours postmortem. Microscopic changes of pancreas occurred at 2 hours postmortem as congestion of the acini. At 5 hours postmortem, the acinar cells were difficult to be identified; most of their nuclei were distributed out of the cells. At 8 hours postmortem the structures of acini could not be identified and the cells had undergone karyolysis. At 10 hours postmortem the structures of all acini could not be identified. Conclusion: Postmortem macroscopic changes of pancreas began at 8 hours postmortem meanwhile microscopic changes began at 2 hours postmortem as acinar congestion. At 8 hours postmortem most acini's structures could not be identified and their cells' nuclei underwent karyolysis

A U-shaped protection of altitude against mortality and infection of COVID-19 in Peru: An ecological study

Background The COVID-19 pandemic has affected the world in multiple ways and has been a challenge for the health systems of each country. From the beginning, risk factors for the severity and mortality of the disease were considered, as the spread of the virus was related to the living conditions of each population. Methods In this ecological study we have evaluated the role of geography, precisely the altitude above sea level in the incidence and mortality of COVID-19 in Peru. Incidence and mortality data were taken from the open-access database of the government of Peru until March 2021. COVID-19 cases and COVID-19 mortality were treated as cases/density population and 1000 x cases/inhabitants while altitude was treated as continuous and as a categorical variable divided in 7 categories. The relationship between COVID-19 cases or deaths for COVID-19 and altitude as continuous variable was determined using Spearman correlation test. Meanwhile when altitude was considered as a categorical variable, Poisson regression or negative binomial analyses were applied. Results A significant inverse correlation was found between COVID-19 cases by population density and altitude (r=-0.37 p < 0.001). By altitude categories, the lowest risk for infection was observed between 3,000 and 3,500 m (IRR 0.08; 95% CI 0.05,0.12). Moreover, we found an inverse correlation between altitude and COVID-19 mortality (r=-0.39 p < 0.001). Also, the lowest risk for mortality was observed between 3,000 and 3,500 m (IRR 0.12; 95%CI 0.08; 0.18). Similar results were found when analyses were adjusted for inhabitants and stratified by sex. Conclusion This study reports an inverse relationship between COVID-19 incidence and mortality with respect to the altitude of residence, particularly, a u-shaped protection is shown, with a highest benefit between 3000 and 3500 m. The possibility of using hypoxia as an alternative treatment requires more complex studies that should allow knowing the physiological and environmental mechanisms of the protective role