Higgs dark energy in inert doublet model

Scalar fields are among the possible candidates for dark energy. This paper is devoted to the scalar fields from the inert doublet model, where instead of one as in the standard model, two SU(2) Higgs doublets are used. The component fields of one SU(2) doublet ($\phi_1$) act in an identical way to the standard model Higgs while the component fields of the second SU(2) doublet ($\phi_2$) are taken to be the dark energy candidate (which is done by assuming that the phase transition in the field has not yet occurred). It is found that one can arrange for late time acceleration (dark energy) by using an SU(2) Higgs doublet in the inert Higgs doublet model, whose vacuum expectation value is zero, in the quintessential regime.Comment: 6 pages, 4 figure

Linearizability of Systems of Ordinary Differential Equations Obtained by Complex Symmetry Analysis

Five equivalence classes had been found for systems of two second-order ordinary differential equations, transformable to linear equations (linearizable systems) by a change of variables. An "optimal (or simplest) canonical form" of linear systems had been established to obtain the symmetry structure, namely with 5, 6, 7, 8 and 15 dimensional Lie algebras. For those systems that arise from a scalar complex second-order ordinary differential equation, treated as a pair of real ordinary differential equations, a "reduced optimal canonical form" is obtained. This form yields three of the five equivalence classes of linearizable systems of two dimensions. We show that there exist 6, 7 and 15-dimensional algebras for these systems and illustrate our results with examples

Subjective Wellbeing of Undergraduate Engineering Students: A Mixed Methods Study

In higher education, the prevalence of mental health issues among students has raised concerns regarding their overall success and wellbeing. While existing research often focuses on identifying and addressing mental health problems, there is a lack of emphasis on understanding the positive contributors to students\u27 mental health. In this study, I expand the concept of mental health beyond the absence of negative mental health states to include the presence of positive mental health aspects through the concept of Subjective Wellbeing (SWB) (feeling that your life is going well, not badly), of engineering undergraduate participants. Both qualitative and quantitative data were collected from engineering undergraduate students within the College of Engineering at Utah State in a Concurrent Mixed Methods paradigm through an online survey. Analysis of the data provided valuable insights into SWB among undergraduate students and the factors perceived to contribute to it. Furthermore, this research offers recommendations aimed at enhancing the collegiate experiences of engineering undergraduates to positively influence their mental health and overall wellbeing. By focusing on the holistic understanding of subjective wellbeing, this study contributes to the broader dialogue on student mental health and the promotion of a thriving academic environment

Money Supply, Food Prices and Manufactured Product Prices: A Causality Analysis for Pakistan Economy

This pioneer research for Pakistan uses monthly time series data for the period of 1997-1 to 2008-4 to determine the causal relationship between the money supply, food prices and manufactured product prices in developing country like Pakistan. Empirical analysis is performed by using the ARDL and Toda Yamamoto causality test. The results show that the bidirectional causality between the food prices and money supply and unidirectional causality from money supply to manufactured product prices. On the other hand there is no causal relationship between the food prices and manufactured product prices. The important finding of this study is that food prices response faster then the manufactured product prices to a change in money supply in the Pakistan.

A Corpus Based Study of Distribution of Preposition in Pakistani and British Englishes

The present study, in the context of World Englishes, explores the distribution of preposition across two varieties of English i.e. Pakistani and British Englishes. It is a corpus based research and studies the frequency of preposition along with its types and (un)shared prepositions in the said varieties. These varieties of English have been studied using Lancaster- Oslo-Bergen (LOB), Freiburg LOB (FLOB) and Pakistani Written English corpus (PWE) respectively. CLAWS Tagger 7 and Antconc.3.3.5 have been used as research tools. The corpus methodology has contributed significantly to gain objective and quantitative findings. In Pakistani English the preposition has been found to be used more frequently than in the British variety. There have been found no significant differences between the numbers of the types of preposition. The findings of the study correspond closely to that of Mindt and Weber’s study (1989) conducted on the prepositional distribution in American and British Englishes. Keywords: Pakistani English; World Englishes; Preposition; Corpus based study

Macho Icons Going Places

This paper is an exploration of the increasing trend of popular macho representations on the back of three-wheeled auto rickshaws in the Punjab, Pakistan. Through an ethnographic field research it was observed that the painted visuals of popular icons in clichéd heroic poses are rampant on rickshaws, representing a mobile exhibition of urban folk art. These visuals are mostly taken from the local Punjabi film industry, which has eclipsed over the past two decades. This study further explored the reasons for the increase of male figures displayed on rickshaws (and other) popular art and the almost total extinction of female figures because of increased religious assertion in Pakistan over this two-decade period. Our analysis shows that the relationship between rickshaw drivers and a common male audience with these powerful visuals is so strong that it reinforces the 'impulse to image'. The power of macho visuals satisfies the taste of cinemagoers who love to travel by rickshaws loaded with such visuals. We argue that these macho ideal representations have a strong impact on the beholders and they influence society through the power they convey. Finally, this study concludes that the popular macho visuals effectively communicate real emotions and please the mood of vast audiences in particular segments of society

Growth and yield promoting effect of NPK fortified with pressmud compost on sugarcane

Combined application of press mud compost and inorganic fertilizers is a cost effective way to manage soil fertility in a sustainable way. To evaluate the results of press mud compost and inorganic based synthetic fertilizers, the present study was planned and research was conducted at Sheikhoo Sugarcane Research Farm located at Sheikhoo Sugar Mills, Kot Addu. The experiment was consist of six treatments namely T1 = No fertilizer, T2 = NPK 228-114-124 kg ha-1, T3 = 25 t ha-1 compost, T4 = NPK 228-114-124 kg ha-1+ 20 t ha-1 compost, T5 = NPK 114-57-62 kg ha-1+ 20 t ha-1 compost and T6 = NPK 228-114-124 kg ha-1+ 10 t ha-1 compost and was laid out in RCB design having four replications with a net plot size of 6 m x 8 m. Sugarcane growth and yield parameters including soil fertility levels (pre planting and post harvesting) were studied. Results showed that lower pH value (8.42) and higher organic matter contents (0.42) were recorded in treatment having compost @ 25 t ha-1. Whereas, higher N (0.028 %), P (7.27 ppm) and K (68.25 ppm) were found in those soils which were treated with NPK 228-114-124 kg ha-1+ 20 t ha-1 compost. Results regarding sugarcane growth and yield showed that maximum number of tillers (138.50 x103 ha-1) 135 days after planting, number of millable cane (104.25 x103 ha-1), number of nodes (25.25/ cane), cane girth (7.54 cm), cane length (3.89 m), cane yield (111.75 t ha-1), brix (22.08 %), pol (19.80 %) and sugar recovery (10.75 %) were observed in those plots treated with NPK 228-114-124 kg ha-1+ 20 t ha-1 compost. It can be concluded that the combined use of press mud compost and inorganic NPK fertilizers remained successful to promote the growth as well as the yield of sugarcane and soil fertility improvement in an efficient way

Impact of Development of Technology on Education: Key Micro and Macro Economies of Australia

The purpose of this paper was to discuss and examine the impact of development of technology on education in key micro and macro economies of Australia. Research for this paper included application of micro and macro economics concepts, presentation of facts that are collected from different sources as well as deeper analysis of the changes in micro and macro economies of Australia caused by technological changes in education supported by a range of other scholarly articles. The paper provides advantages and disadvantages of development of technology on education as well as impact of technology on education in key micro and macro economies of Australia. Based on the analysis, the education industry in general is benefitted by development of technology caused by increasing access to information and flexible study schedule through e-learning. The paper then moved into micro and macro analysis of the impact technology has on education.  The key factors in micro economics that were discussed are long run demand and supply, labour demand and supply, resistance to change and effect on universities and the environment. In macro economics, the key factors that were discussed are increased access to education in the country, decrease in structural unemployment rate, decreased demand for Australian academics, increased level of global competition and decrease in GDP as well as increase in information asymmetry. The paper provides detailed analysis on the impact of technological development on key micro and macro economies. In general, this paper suggests that as the inevitable development of technology in education will have both positive and negative effects on Australian economies, the key challenge is in managing the development by minimising its negative impacts and nourishing the positive impact

Privacy Preserving Enforcement of Sensitive Policies in Outsourced and Distributed Environments

The enforcement of sensitive policies in untrusted environments is still an open challenge for policy-based systems. On the one hand, taking any appropriate security decision requires access to these policies. On the other hand, if such access is allowed in an untrusted environment then confidential information might be leaked by the policies. The key challenge is how to enforce sensitive policies and protect content in untrusted environments. In the context of untrusted environments, we mainly distinguish between outsourced and distributed environments. The most attractive paradigms concerning outsourced and distributed environments are cloud computing and opportunistic networks, respectively. In this dissertation, we present the design, technical and implementation details of our proposed policy-based access control mechanisms for untrusted environments. First of all, we provide full confidentiality of access policies in outsourced environments, where service providers do not learn private information about policies. We support expressive policies and take into account contextual information. The system entities do not share any encryption keys. For complex user management, we offer the full-fledged Role-Based Access Control (RBAC) policies. In opportunistic networks, we protect content by specifying expressive policies. In our proposed approach, brokers match subscriptions against policies associated with content without compromising privacy of subscribers. As a result, unauthorised brokers neither gain access to content nor learn policies and authorised nodes gain access only if they satisfy policies specified by publishers. Our proposed system provides scalable key management in which loosely-coupled publishers and subscribers communicate without any prior contact. Finally, we have developed a prototype of the system that runs on real smartphones and analysed its performance.Comment: Ph.D. Dissertation. http://eprints-phd.biblio.unitn.it/1124