566 research outputs found
Epithelioid Cell Histiocytoma – An Unusual Variant of Dermatofibroma at an Uncommon Site
Epithelioid cell histiocytoma (ECH) is a rare variant of cutaneous fibrous histiocytoma involving primarily trunk and the extremities. It can delude the pathologist in considering other benign non neoplastic and neoplastic lesions. Awareness of this new entity can avert unnecessary treatment. We report a case of epithelioid cell histiocytoma in a 40 yr old male who presented with a painless nodular swelling over the dorsum of nose. The case is presented here for its rarity and an uncommon site of involvement
Gender Inequalities in the Allocation of Time to Household Production in Nepal
The thesis examines factors that may explain gender (working age group, married men and women, 15-60 years) inequalities in the allocation of time to household production in Nepal. Gender disparities in the allocation of unpaid care and domestic labor (home production) are a major and prevalent element of inequalities between men and women. I presume that each spouse\u27s time spent is influenced by personal and household factors. Furthermore, I argue that state can play substantial role in pursuing province level employment program (Karnali Province) in line with federal level employment program, namely Job Guarantee to uplift women\u27s economic empowerment by establishing respectable jobs in the care industry and elsewhere
Motivation of temporary employees
Employees are often considered a company's greatest asset to be viewed as a competitive advantage. For this reason it is important for companies to attract and retain the best employees; and; provide them with encouragement, stimulus, and make them feel that they are an integral part of the company's mission. Employees who believe that management is concerned about them as a whole person - not just an employee - are more productive, more satisfied, and more fulfilled. A satisfied workforce is likely to lead to more satisfied customers, which in turn will improve to profitability. This research examines the motivation levels of temporary employees working for companies operating in Finland in the Helsinki region. The research was conducted through face to face interview with HR personnel of Staffpoint oy and surveys conducted using questionnaire. The author’s personal experience of working as a temporary worker motivated the research on this particular topic.
The subject of this thesis is the motivation of temporary employees working for a staff rental business, who have different workplaces and different tasks to do. The research examines the factors that keep such employees motivated to continue their work and satisfy the needs of their customers. The research addresses the question whether staff rental businesses are doing enough to keep their employees motivated.
Both quantitative and qualitative methods of research were used to answer the questions and clarify the motivation levels of employees. The survey as quantitative method was distributed among the workers who work for the staff rental business. The survey consisted of questions such as why the employees are motivated to work as temporary employees and the factors that keep them motivated. The purpose of the survey was to collect information from 26 workers to show what the majority of people think and improve the reliability of the conclusion that could be drawn. A Face to face interview with Katri Hietakangas of Staffpoint oy as part of qualitative method was done with a recruiter who was asked a series of questions related to the motivation level of their employees and the part they played in keeping the motivation level of employees high.
The conducted surveys showed the majority of the workers are somewhat satisfied with their current working conditions. They are motivated because of the factors such as money, work flexibility and extra work. However, from the interview the conclusion drawn was there was no major issue of de-motivation among the employees of Staffpoint oy and it is difficult to determine whether the employees are satisfied or no unless their customers or the workers call them and tell them about the issues at work
An Unusual Melanocytic Nevus of Conjunctiva : Balloon Cell Nevus
Melanocytic nevi are one of the most common benign tumors of the conjunctiva. The balloon cell nevus is a rare and unusual variant of nevus of melanocytic origin, in which more than 50% of the tumor is composed of large polygonal cells with small nucleus and a clear to vacuolated cytoplasm. We describe a case of balloon cell nevus in a 6-year-old child who presented with pigmented lesion of the right eye since birth. The melanocytic nature of these cells was confirmed by immunohistochemical study. Excision of the tumor results in cure. This report describes a rare balloon cell nevus of conjunctiva which to the best of our knowledge is not documented in Indian literature
Standards-based sensor web for wide area monitoring of power systems
The balance of supply and demand of energy is the key factor in the stability of power systems. A small disturbance in the supply demand relationship, if not properly handled, can cascade into a major outage, costing millions of dollars to the stakeholders. Proper monitoring and exchange of critical information in real time is the only solution to prevent the instability in this vulnerable system. But, the disparity in the protocols used by power utilities and the lack of infrastructure for information exchange are proving to be hindrance to obtaining a reliable de-regularized power industry. In this thesis, an emerging Sensor Web Enablement (SWE) has been adapted for the wide area monitoring of power systems. SWE and CIM provide a solution to both problems; the heterogeneity of data and the lack of central repository of the data for proper action. The sensor data from utilities that are published in CIM were modeled thorough a SensorML and exposed via a Sensor Observation Service (SOS). This provides a standard method for discovering and accessing the sensor data between utilities and facilitates rapid response functionality to handle contingences
A transport study of high density helicon plasma discharges in the Prototype Material Plasma Exposure eXperiment
The Prototype Material Plasma Exposure eXperiment (Proto-MPEX) at Oak Ridge National Laboratory is instrumental in demonstrating the plasma source capability for the steady-state MPEX facility to study plasma-material interactions (PMIs). Proto-MPEX has justified MPEX by examining the efficiency of the helicon source, and auxiliary electron Bernstein wave (EBW) heating and ion cyclotron heating (ICH). This thesis aims to address the particle transport from the source toward the target in Proto-MPEX. The governing transport phenomenon in Proto-MPEX is identified using the electron temperature and density, Mach number, and other derived quantities. Extensive diagnostics coverage along the axial length of the device provided various plasma parameters. The upgraded Thomson scattering system and Mach-Double Langmuir probe were used for the study.A small variation in the axial temperature for both helicon-only and helicon with an auxiliary heating system indicates that Proto-MPEX operates in the sheath-limited regime. The presence of strong parallel convective heat along the axis, except near the source, was experimentally measured and predicted using a data-constrained B2.5 Eirene model. With EBW, the conductive heat flux increased around the launcher but was not found to be significant in comparison. With a small temperature gradient and highly conductive flux, Proto-MPEX plasma transport is suggested to be sheath-limited. Increasing collisionality and density at the target can induce conduction-limited regime in Proto-MPEX. During the efficiency study of the transport with EBW heating, a flat or downhill magnetic field from the heating location to the target was found to be preferential to deposit higher heat flux on to the target.The presence of various plasma sources creates a complex magnetic field geometry in Proto-MPEX. Such field variations create magnetic mirrors, which manifests Gas-dynamic trap for low energy and adiabatic-kinetic trapping for high energy plasmas. Experimentally, a linear increase in trapped density was observed with the mirror ratio for the low temperature population. Temporal profiles from flow measurement with ICH show plasma slow-down and the possibility of flow reversal upstream of the ICH resonance location. Discussions on some of the implication for the MPEX user facility is also presented
Antenna Selection And MIMO Capacity Estimation For Vehicular Communication Systems
Vehicular communication is one of the promising prospects of wireless communication capable of addressing the issues related to road safety, providing the framework for smart or intelligent cars. To provide a reliable wireless link for vehicular communication extensive channel modeling and measurements are required. In this thesis a novel cost-effective implementation of vehicular channel capacity measuring system using off-the-shelf devices is proposed. Then using the proposed system, various channel measurements are performed. The measurement results are utilized to examine multi-antenna systems for vehicular communication.
The challenge in developing an efficient network between cars is to understand the nature of random channels that changes with the location of antenna, surroundings and obstacles between the transmitting and receiving vehicles. In addition to measurements, in this thesis, the channel behavior has been studied through simulation. Wireless InSite from Remcom was used as a simulation tool to study different vehicular channels in environments with different structures to see the impact of obstacles and surroundings in the performance of the vehicular network. In particular, the behavior of different antenna locations on channel capacity of 2Ã2 Multiple Input Multiple Output (MIMO) systems is investigated. Channel capacities that are obtained from simulation and measurements provide the information about the changing nature of the channel and outline the essential considerations while choosing the antenna positions on the transmitting or receiving vehicles
Biochar Reduces the Pupation and Eclosion of a Specialist (Manduca sexta) and a Generalist Pest (Spodoptera frugiperda)
Chapter 1: This chapter incorporates detailed information about the biochar concept, its production, composition, and properties, harmful arthropods and their damage, the effect of soil on the arthropod community, and the application of biochar on arthropod control.
Chapter 2: The comprehensive lab experiment was conducted with modified pupation media enriched with walnut shell biochar (Chapter II) to evaluate the effects of biochar on the pupation and eclosion success rates of a specialist (Manduca sexta) and a generalist pest (Spodoptera frugiperda). We found that the biochar treatment led to a significant reduction in pupal mass, adult mass, adult wingspan, body length, and length of survival compared to the control. This was vital to understanding the direct impact of biochar on pupation and eclosion stages of pest development and serves as the foundation for future research of biochar on the soil to assess the effect of biochar on different stages of herbivores.
Chapter 3: This chapter provides an overview of my major findings and possible future directions for research to understand the biochar effect on arthropod’s control and potential solutions to incorporate different types of biochar on herbivores’ control and suggesting the biochar as a potential alternative against chemical insecticides for future references
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