Performance Evaluation of Parallel Finite Element Electromagnetic Field Analysis using Numerical Human Models in HPC Environment

Amane Takei 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.4-2

Genome-wide insights of Ethiopian indigenous sheep populations reveal the population structure related to tail morphology and phylogeography

Agraw Amane,Gurja Belay,Yao Nasser,Martina Kyalo,Tadelle Dessie,Adebabay Kebede,Tesfaye Getachew,Jean‑Baka Domelevo Entfellner,Zewdu Edea,Olivier Hanotte,Getinet Mekuriaw Tarekegn 한국유전학회 2020 Genes & Genomics Vol.42 No.10

Background Ethiopian sheep living in diferent climatic zones and having contrasting morphologies are a most promising subject of molecular-genetic research. Elucidating their genetic diversity and genetic structure is critical for designing appropriate breeding and conservation strategies. Objective The study was aimed to investigate genome-wide genetic diversity and population structure of eight Ethiopian sheep populations. Methods A total of 115 blood samples were collected from four Ethiopian sheep populations that include Washera, Farta and Wollo (short fat-tailed) and Horro (long fat-tailed). DNA was extracted using Quick-DNA™ Miniprep plus kit. All DNA samples were genotyped using Ovine 50 K SNP BeadChip. To infer genetic relationships of Ethiopian sheep at national, continental and global levels, genotype data on four Ethiopian sheep (Adilo, Arsi-Bale, Menz and Black Head Somali) and sheep from east, north, and south Africa, Middle East and Asia were included in the study as reference. Results Mean genetic diversity of Ethiopian sheep populations ranged from 0.352±0.14 for Horro to 0.379±0.14 for ArsiBale sheep. Population structure and principal component analyses of the eight Ethiopian indigenous sheep revealed four distinct genetic cluster groups according to their tail phenotype and geographical distribution. The short fat-tailed sheep did not represent one genetic cluster group. Ethiopian fat-rump sheep share a common genetic background with the Kenyan fat-tailed sheep. Conclusion The results of the present study revealed the principal component and population structure follows a clear pattern of tail morphology and phylogeography. There is clear signature of admixture among the study Ethiopian sheep populations

Helicopter-Satellite Communication Experiment for Disaster Information Transmission

Fujino, Yoshiyuki,Satoh, Masaki,Miura, Amane,Minowa, Tadashi,Nagai, Seiji,Taira, Shinichi 통신위성우주산업연구회 2005 Joint Conference on Satellite Communications Vol.2005 No.-

We present the helicopter-satellite communication system that was successfully developed and demonstrated for the first time. Time diversity and blade-synchronized data transmission to avoid the shadowing due to rotor blades of the helicopter, satellite and polarization auto-tracking, semi-moving picture transmission and position fixing of the picture scene etc will be presented.

Fractal Approach to Alternating Current Impedance Spectroscopy Studies of Carbon Nanotubes/Epoxy Polymer Composites

Belhimria, Rajae,Boukheir, Sofia,Samir, Zineb,Len, Adel,Achour, Mohammed Essaid,Eber, Nandor,Costa, Luis Cadillon,Oueriagli, Amane Korean Society of Microscopy 2017 Applied microscopy Vol.47 No.3

The dielectric relaxation characteristics of composites with different concentrations of carbon nanotubes loaded in an epoxy polymer matrix has been studied as a function of frequency over a wide range (1 Hz~10 MHz) at room temperature. Two characterization techniques were used in this work to measure and calculate the dimensionality parameters: small angle neutron scattering and impedance spectroscopy. The results obtained from both methods are in good agreement, indicating the reliability of the estimated fractal dimension, despite of the difference in the length scales accessed by the two techniques.

Strategic Alliance within the Sugar Industry of Pakistan: A Resource Dependence Perspective

AMAN, Rameesha,KHAN, Abdul Rehman Korea Distribution Science Association 2021 Asian journal of business environment Vol.11 No.4

Purpose: This paper uses the resource-dependency theory to present the case of the Pakistan sugar industry to highlight how the industry uses a strategic alliance to gain a powerful bargaining position over its critical dependencies. The case of the Pakistan sugar industry is well-known and it is common knowledge that the alliance or the cartel within it is responsible for frequent price hikes and sugar supply shortages in the country. Research design, data and methodology: We use a case study, qualitative document analysis design to trace how the alliance overcomes its various dependencies, and in doing so, how does it harm various stakeholder interests. Results: This paper finds that the sugar industry alliance maintains its bargaining power by manipulating sugar supply through horizontal alliances, political affiliations, underselling and under-reporting sugar stocks, purchasing sugarcane from the black market, and by gaining billions of rupees in export subsidies by hoarding stock and using its political connections. Conclusion: The paper concludes by providing a summary of the measures which the government has taken to curb this anticompetitive conduct; the most important of which is the removal of protectionist measures for sugar trade and allowing market forces to control the demand and supply of sugar in the local market.

Olfactometry responses of small hive beetle (Aethina tumida ) to hive materials

Aman Dek,Chuleui Jung 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10

Small hive beetles (SHBs) are parasites of bee colonies and is one of the invasive pest species worldwide. In this study, we aimed to investigate a chemical responsible for the attractiveness of a hive to this pest. Based on the laboratory observation, we found the fermented pollen dough (honey bee food) was highly attractive to adult SHBs. Olfactometer bioassay showed the crude methanol extract of this material is attractive to both sexes (> 60%). However, the methanol extracts of fresh honey and pollen patty which we used as a food of SHB were not attractive to the pest. The crude methanol extract of fermented pollen dough was subjected to partitioning with n-hexane, chloroform, ethyl acetate, and n-butanol. The n-hexane and chloroform fractions were attractive > 80% for both sex SHBs. On the other hand, ethyl acetate and n-butanol were repulsive >70% and >80%, respectively. The wandering larvae of the pest showed a reverse response for the solvent fractions observed in adults. HPLC and GC-MS analysis indicated the methanol extract of fermented pollen dough constitute butanoic acid (7.70%), neopentylamine (7.29%), (E)-9-octadecenoic acid ethyl ester (3.89%) and hexadecanoic acid, ethyl ester. While these compounds were not found even in a trace level in the methanol extract of honey and pollen patty. Based on this findings these constituents of the fermented pollen dough were formed by the action of SHB and its larvae and we believe these volatile organic compounds are responsible for attractiveness to SHB as pollen dough undergoes attach by SHB and ferment. We are working on investigating attractiveness of each of these chemicals toward the pest. We recommend further work on these chemicals for their application to control this pest.

Anomalies of the Healthcare Sector Using Workplace Safety and Job Satisfaction: A Case Study of Pakistan

AMAN-ULLAH, Attia,AZIZ, Azelin,IBRAHIM, Hadziroh Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.3

This study aims to investigate the impact of workplace safety on doctors' retention and turnover intention along with job satisfaction as the mediator. A questionnaire-based survey was conducted with 394 medical doctors working in thirty-five hospitals in Pakistan using a structural equation modeling. Results of the study showed that: 1) workplace safety has a significant positive relationship with employee retention; 2) workplace safety has a significant negative relationship with turnover intention; 3) workplace safety has a significant positive relationship with job satisfaction; 4) job satisfaction has a significant positive relationship with employee retention; 5) job satisfaction has a significant positive relationship with turnover intentions; 6) job satisfaction mediates between workplace safety and employee retention; while 7) job satisfaction failed to mediate between workplace safety and turnover intentions. The findings of the study suggest that in a fear-free and safe environment, employees' chance to stay will increases. The study also suggests that dissatisfied employees do not need to leave the organization. There can be other factors that can be explored in future studies. This study also provides a practical implication for the doctors' low retention and high turnover, specifically in the healthcare sector of Pakistan by providing guidelines to the human resource executives to focus on the strategic implementation of workplace safety.

Suitability of tomato leaves for larval development of Potato Tuber Moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

Aman Dekebo,Sunil Aryal,정철의 한국곤충학회 2019 Entomological Research Vol.49 No.6

The potato tuber moth (PTM) is an important pest of the potato plant and its tuber. With the expansion of its geographic range, the PTM could be potential threat to the tomato (Solanum lycopersicum L.), a congeneric species of the potato. To assess that risk, we tested larval feeding and development of PTM on leaves of five cultivated tomato varieties namely Moneymaker, Campari, Ailsa Craig, LA3475, E6203 and one wild tomato variety S. pimpinellifolium. PTM larvae accepted all tested plant leaves and developed into adults. Larval development was fastest on the Ailsa Craig variety. Pupae developed fastest on the Moneymaker variety and slowest on LA3475. Host acceptance and survival were highest on Ailsa Craig and lowest on LA3475. The significantly highest male proportion occurred on LA3475 variety. The study showed that PTM could be a potential threat to tomato cultivation which is rapidly increasing in temperate regions owing to climate change.

Chemical interaction of tomato and potato tuber moth mediated by leaf volatiles

Aman Dekebo,Chuleui Jung,Sunil Aryal 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10

The potato tuber moth (PTM) is an oligophagous pest on solanaceous crops. We tested adult olfactory behavior and larval development on 5 cultivated tomato varieties leaves including Moneymaker, Campari, Ailsa craig, LA3475 and E6203, and one wild species, S. pimpinellifolium. Bioassay on PTM larvae showed highest developmental performances in Ailsa craig, and lowest in LA3475. Tomato leaf hydro-distilled oils of Moneymaker, Campari, Ailsa craig, S. pimpinellifolium and E6203 showed strong attractiveness and LA3475 exhibited repulsiveness for mated adult PTM of both sexes in two-armed bioassay. The hydro-distilled oils of all tomato leaves contain the fatty acid n-hexadecanoic acid as a major compound. We conformed presence of n-hexandecanoic acid (palmitic acid) in the leaves by GC-MS. LA3475 consists of (1-hexyltetraecyl) cyclohexane (10.5%) as the second major compound which was absent in all other tomato varieties. A standard sample palmitic acid was tested against the pest at 0.1, 1 and 10 mg/ml did not show any significant olfactometer effect. On other hand, phytol showed a weak attractiveness (60.7-63.6%) and (57.6-60.5%) for male and female PTM, respectively at 0.1, 1 and 10 mg/ml. Additionally, SEM of these tomato varieties leaves showed they have trichomes with distinct shapes. We are working on HPLC, and GC-MS analysis of specific chemicals in trichomes of these tomato varieties leaves.

Supervised ECG wave segmentation using convolutional LSTM

Aman Malali,Srinidhi Hiriyannaiah,Siddesh G.M.,Srinivasa K.G.,Sanjay N.T. 한국통신학회 2020 ICT Express Vol.6 No.3

Electrocardiogram (ECG) is the graphical representation of electrical activity of the heart and is used to detect certain structural and functional heart conditions. Segmenting ECG waveforms and annotating constituent components is required for analysis of ECG and to arrive at a diagnosis. This paper proposes a Convolutional Long Short-Term Memory (ConvLSTM) neural network to segment the ECG waves. It consists of a convolutional layer followed by a Bidirectional LSTM architecture. The segmentation is achieved by adding additional features such as derivative of the ECG wave as well as the smoothened ECG wave and the model outperforms traditional Markov models.