Thermal analysis and Joule-Thomson expansion of black hole exhibiting metric-affine gravity

This study examines a recently hypothesized black hole, which is a perfect solution of metric-affine gravity with a positive cosmological constant, and its thermodynamic features as well as the Joule-Thomson expansion. We develop some thermodynamical quantities, such as volume, Gibbs free energy, and heat capacity, using the entropy and Hawking temperature. We also examine the first law of thermodynamics and thermal fluctuations, which might eliminate certain black hole instabilities. In this regard, a phase transition from unstable to stable is conceivable when the first law order corrections are present. Besides that, we study the efficiency of this system as a heat engine and the effect of metric-affine gravity for physical parameters $q_e$, $q_m$, $\kappa_{\mathrm{s}}$, $\kappa_{\mathrm{d}}$ and $\kappa_{\mathrm{sh}}$. Further, we study the Joule-Thomson coefficient, and the inversion temperature and also observed the isenthalpic curves in the $T_i -P_i$ plane. In metric-affine gravity, a comparison is made between the Van der Waals fluid and the black hole to study their similarities and differences

Computerized System to Enhance Situation Awareness: Key Challenges Associated with the Design, Evaluation, and Extension of a Prototype

ABSTRACT Successful decision making and task execution in emergency management require appropriate levels of situation awareness (SA). This paper proposes an ontology-based model for the design of a computer-based system, Situation Aware Vigilant Emergency Reasoner (SAVER) that supports the individual, shared and team SA of managers in emergency situations. SAVER is evaluated in simulated experiments that demonstrate the improvements in SA performance. The paper provides a complete description of the SAVER design, implementation, evaluation and its proposed extension from a proof-of-concept to a production environment

Career Development an Imperative of Job Satisfaction and Career Commitment: Empirical Evidence from Pakistani Employees in Banking Sector

The idea of strengthening human capital to beginning creativeness, business soul, and advancement through preparing the careers of institutional members using HRM policies and methods to develop different skills, mindsets and expertise with the ultimate aim to provide a range of innovative goods and services is gaining attention. The overall perspective for the research study was to discover the effects and outcomes of profession growth initiatives on companies and employees. The survey is conducted to collect data from the Banking sector in Islamabad and sample selected is of five major private banks. The data is analyzed by using SPSS and Amos to authenticate the model and propositions made by the researcher. Organizations invest resources in profession growth kinds of actions for recruiting, there tends to be less investment in similar kinds of actions for worker retention. This paper examines the link between profession preparing and profession control as antecedents of profession growth and job fulfillment, and profession dedication as its outcome. There is a significant link between the factors of profession preparing and profession control, and profession growth, and in turn, with job fulfillment and profession dedication. The paper converses about the significances of these conclusions for career development

Preventing DoS Attacks in IoT Using AES

The Internet of Things (IoT) is significant in today’s development of mobile networks enabling to obtain information from the environment, devices, and appliances. A number of applications have been implemented in various kinds of technologies. IoT has high exposure to security attacks and threats. There are several requirements in terms of security. Confidentiality is one of the major concerns in the wireless network. Integrity and availability are key issues along with the confidentiality. This research focuses on identifying the attacks that can occur in IoT. Packet filtering and patches method were used to secure the network and mitigate mentioned attacks but these techniques are not capable of achieving security in IoT. This paper uses Advanced Encryption Standard (AES) to address these mentioned security issues. Official AES version uses the standard for secret key encryption. However, several problems and attacks still occur with the implementation of this original AES. We modified AES by adding white box and the doubling of the AES encryption. We also replaced the Substitute-Byte (S-Box) in the conventional AES with the white box. The significance of a white box is where the whole AES cipher decomposed into round functions. While doubling the process of AES gives difficulty to the attacker or malware to interrupt the network or system. From the algorithms, our proposed solutions can control DoS attack on IoT and any other miniature devices

Demand Estimation and Forecasting for DALDA Banaspati in Pakistan: An Empirical Analysis from Multan District

The main purpose of our study is to estimate the demand equation. By using this equation, we have to forecast the future demand. To forecast demand, we have collected actual data on demand of Dalda, price of Dalda, price of Hoor and total sales from Jan 2013 – Dec 2014. By using the Multiple Regressions, we have formulated the demand equation from actual data, and then we have forecasted the values by using exponential smoothing technique for all independent variables. Forecasted demand for the Jan of 2015 is 2072.2921, Quantity demanded will increase by 272.2921 (15 percent) for Jan 2015 as compared to the Jan of 2013. We find that price elasticity is -0.825279 it means that demand of Dalda lie in inelastic portion, it means that if price increase or decrease, there is less impact on the quantity demanded. Cross price elasticity of sultan is positive, its value is 0.4964 it shows that it is substitute commodity. Cross price elasticity of Hoor should be positive, but according to our result its value is –2.718552, which means that in this specific area people are using Hoor as a complementary product .Cross price elasticity of total sales is 1.7299. Keywords: Multiple Regression Analysis, Demand Estimation and Forecasting, Elasticities, Price of Dalda, Total Sales

A COMPARATIVE RESEARCH TO EVALUATE MVA (MANUAL VACUUM ASPIRATION) AND MEDICAL TREATMENT TO MANAGE MISSED MISCARRIAGE (FIRST TRIMESTER)

Objective: The objective of this research is to evaluate and contrast the medical treatment and MVA (Manual Vacuum Aspiration) for managing the miscarriage in the 1st trimester. Material and Methods: This comparative research was conducted at Sir Ganga Ram Hospital, Lahore (August 2017 to March 2018). This research consists of a total of 92 cases of patients having a gestation age of less than twelve (12) weeks of missed abortion in the first trimester. Two groups were made of the patients: group A was treated with MVA whereas group B was treated medically and their effectiveness was evaluated. Results: The patients’ mean age was (29.77 ± 6.786) years in which group A patients’ mean age was (30.61 ± 6.754) years while group B patients’ mean age was (28.93 ± 6.787) years. The gestational mean age was (5.87 ± 3.592) weeks in which group A gestational mean age was (6.09 ± 3.699) weeks while group B gestational mean age was (5.65 ± 3.510) weeks. In group A patients, the effectiveness of treatment was 91.30% (42 out of 46 patients) while in the group B patients, the effectiveness of the treatment was 69.57% (32 out of 46 patients). The rate of effectiveness of cure for group A was considerably greater than Group B i.e., 91.30% as compared to 69.57%, having (p=0.009). Conclusion: The outcome of this research proved that MVA is a far more useful modality of treatment than medical treatment i.e., misoprostol intravaginally, as the rate of effectiveness of cure was considerably greater for the group of MVA than the group which was treated medically and it was especially true in the group of patients with older ages. Keywords: Evacuation and Dilatation, Incomplete Abortion and Manual Vacuum Aspiration

Impact of Servant Leadership on Project Success Through Mediating Role of Team Motivation and Effectiveness:A Case of Software Industry

Project management in today’s intensely competitive environment has compelled organizations to adopt project management approach for better business results. Therefore, current research study aims to investigate the impact of servant leadership on project success with the mediating role of team motivation and team effectiveness in the software industry. A field survey was conducted, using a questionnaire as a survey tool. Data were collected from 219 respondents who have been working as team members of software development projects. The statistical results were obtained using the SPSS Process macro. The results show project managers need to exhibit a servant leadership style due to its strong influence on project success, albeit through team motivation and effectiveness. The findings from this study contribute to the field of leadership and project management along with the field of information systems and software engineering.</p

Influence of In-ovo Administration of Electrolyte on Eggs of Broiler Breeder During Perinatal Period and its Impact on Subsequent Broiler Performance

Background: The perinatal period (final some days of pre-hatch to initial some days of post-hatch) is mainly critical moment during the growth of hatchling because it is a evolutionary  time during which the hatchling undertakes catabolic, anabolic and physiological transfers from the consumption of egg components to external diet. Though, with the present endeavor of viable hatcheries as well as in view of instance to shift and release of hatchling to poultry farms, the hatchlings are unavoidably displayed to delay rationing from 48 to72 hrs. Consequently, tardy dieting, hatchling undergo deprivation as well as allocate the restricted deposits of nutrition food substances for maintenance of temperature modulation as well as anabolism & catabolism that hampers growth performance. In-ovo injection of nutrient (like, electrolytes) during last period of incubation can be applied as an approach to overcome above mentioned constraints.Methods: A total 240 broiler breeder (Ross-308) fertile eggs were set in incubator trays representing 60 eggs for each treatment. A 200-μL electrolyte mixture solution (comprising NaCl 3.5g, KCl1.5g, Na3C6H5O7 2.9g and dextrose 20g) with volumes of 100, 500 or 1000ml insertion treatment as well as non-injected control were incorporated during this trial. The mixtures of electrolytes solutions with different concentration is used in all treatments with dose of 200-μL into amniotic fluid of hatching eggs at day 18 in hatchery, and subsequent hatchability, blood profile and post-hatch performance were examined.Results: The results showed that none of the injections exhibited substantial (p > 0.05) influences on hatch rate or body weight (BW) at hatch, 3d as well as10d post hatch. Likewise, plasma refractive index (PRI), plasma triglyceride as well as glucose contents at d 3 & 10 were not influenced (p > 0.05) through any insertion treatments. Body weight gain (BWG), feed consumption and feed conversion ratio (FCR) throughout period at 0–32 weeks were also not influenced (p > 0.05) by in-ovo administration of the upgraded electrolyte mixture.Conclusion: This study envisaged that tested electrolyte mixture fluids were showed safe and sound for the incipient and hatchlings. It may be proposed that electrolyte mixtures possess ability intended for usage in blend with other electrolytes, nutrition food substances as well as encourages to the viable insertion of broiler hatching embryos for the advancement of incipient and initial post-hatch chick growth as well as advancement.Keywords: Electrolyte; In-ovo; Hatchability; Growth performanc

Bedtime Smart Phone Usage and Its Effects on Work-Related Behaviour at Workplace

The over usage and over dependency on digital devices, like smartphones, has been considered as a growing international epidemic. The increased dependency on gadgets, especially smartphones for personal and official uses, has also brought many detrimental effects on individual users. Hence it is vital to understand the negative effects of smartphone usage on human. Therefore, this study aims to investigate the effects of bedtime smartphone usage on work performances, interpersonal conflicts, and work engagement, via the mediating role of sleep quality among employees. Using a cross-sectional study design, a questionnaire-based field survey was conducted on 315 employees who participated as respondents. The results confirmed the negative effects of bedtime smartphone usage on sleep quality. Along with it, the effects of sleep quality on work performances, work engagements and interpersonal conflicts were also proven to be statistically significant. Regarding the mediating role of sleep quality, it was empirically evident that sleep quality mediates the relationship between bedtime smartphone usage with work performances and interpersonal conflicts. The findings revealed that bedtime smartphone usage reduces sleep quality among the employees, resulting in lower work performances and engagements while contributing to higher interpersonal conflicts. The findings concluded that smartphone usage before sleep increases the prospects of employees to be less productive, less engaged, and have more workplace conflicts. The findings warrant the continued managerial as well as academic research attention, as the smartphones are now used by many organisations to run businesses as well