Radio wave propagation studies through modern windows

Abstract. It is a growing trend in the modern housing construction especially in northern parts of Europe and America to use modern windows with selective glasses in order to achieve the adequate thermal isolation. The idea is to conserve the energy and discourage the excess use of it following the guidelines of European commission, which aims to achieve zero energy buildings by 2020. Even though the use of such windows do address the energy issue at hand, but on the other hand they cause problems to the radio wave propagation through these windows. The reason for this is the use of metallic coating made of titanium oxide or silver oxide in general on these windows because of their good properties to provide thermal isolation, but are susceptible to deterioration of radio wave propagation through them. Various solutions to this problem have been addressed in this thesis along with their tradeoffs. The previous and current research being carried out to address this issue also have been discussed thoroughly including the research that worked as the motivation to pursue this issue. Amongst others, one solution is the use of passive repeater to achieve the power gain which have been focused on. A prototype repeater antenna developed earlier at CWC and tested through measurements addresses the problem considerably well. Measurements were taken at EMC chamber, University of Oulu, within the frequency range of 700 MHz to 10 GHz, and the results have been compared and analyzed in this thesis. According to our findings, the repeater antenna under the test has shown promising results. In the future work, the proposed repeater can be tested in real life scenarios and its performance can be analyzed within the real life environmental constraints

Comparison of Tramadol and Pethidine for the treatment of shivering during spinal anesthesia

Objectives: The aim of the study is to compare the effectiveness of tramadol vs pethidine for treatment of shivering occurring after spinal anesthesia. Study Design: Double blind comparative study. Place and duration of study: Department of anesthesiology and pain medicine, Combined Military Hospital Malir Cantt Karachi from 1st September to 31st December 2017. Methodology: 70 patients were selected following non-random convenient sampling and were divided into Group A and B. Group A received 0.25mg/kg tramadol while Group B received 0.35mg/kg pethidine. Time to complete control of shivering was noted. Nausea and vomiting were also evaluated by using a four-point scale (Table1). Results: Shivering was successfully controlled in 91.4% and 85.7% respectively in group A and B; success rates were not statistically different (p=0.23). Average time between injection tramadol to complete control of shivering in successfully treated Group A patients was 210±63 seconds (range of 100 to 310 seconds) and for pethidine average time was 174±52 seconds (range of 90 to 258 seconds). Pethidine showed a shorter time to control shivering which was statistically significant (p=0.09) but in real time amounted to an average of 0.6 minutes (Figure 2). Nausea and vomiting were more frequent (14.3% vs 8.6%) in group B as compared to Group A and this was statistically significant (p=0.03). Conclusion: Tramadol was found to be as effective as pethidine in controlling shivering with fewer side effects in spinal anesthesi

Impact of Financial Crisis on Textile Industry in Pakistan

The aim of study is to analyze the performance of Textile sector in Pakistan covering the pre–crisis period, post crisis period and period of crisis as well. For this purpose data were collected from overall textile sector from available sources for the period of five years. According to the most of the analysts, financial crisis 2008-09 is serious one after the world wide great depression of 1930’s. The analyses have been conducted on the basis of financial ratios (Profitability, liquidity and activity). The profitability ratios such as returns on assets were affected by financial crisis because returns on asset were decreased in crisis period as compared to cover pre and post crisis and same is the situation of return on equity that was also affected by financial crisis. The earnings per share are also reduced in financial crisis period because before and after crisis earning per share was positive but negative in crisis. The liquidity of this sector was also affected by financial crisis. Turnover of the assets also proved that assets were poorly managed by textile sector in financial crisis period. The results showed that the performance of textile sector had been better in pre-crisis and post-crisis while it was bad during crisis period

Petrophysics based Reservoir Evaluation of the Cretaceous Lower Goru “C” Sands, Middle Indus Basin, Sindh, Pakistan

This study demonstrates the reservoir investigation of the Cretaceous Lower Goru “C” sand interval using exploratory well data from the middle Indus basin of Sindh. The petrophysical parameters including volume of shale, effective porosity, and water saturation of the investigated reservoir interval were calculated. The shale volume calculation results in 30–35% of non-clean (shale) lithology, which is high as compared to Sawan-01 and Sawan-08 wells. The effective porosity ranges from 12–16%, while the average value of water saturation in the complete interval of “C” sand falls in the range of 50–60%. However, certain zones with relatively lower water saturation values of around 30-50% are also observed. These zones are considered better pay zones in comparison to the other intervals. A “gas effect” phenomenon observed on cross plots represents the area of neutron-density cross-over indicating the presence of lighter hydrocarbons in this reservoir zone interva

Cloud-based Architecture of Raspberry Pi: Personal Cloud Storage

The research explained the reason why we need personal cloud storage. This research will show steps on how to build a personal cloud storage by using credit card size Raspberry Pi (minicomputer), which will help the user to enable cloud storage mode to their external hard drive. However, other cloud storage services like Dropbox, Google Drive, and iCloud gives limited amount of storage. This research will help the users to use (1TB) or above size external hard drive to be use and have access anywhere from any device over internet. Also the second part of this research focus on replace the laptops to raspberry pi that lecturers use in the classroom to play PowerPoint slides, and videos at university. Universities use laptops to plug and play their educational slides and videos. All these laptops price and maintenance cost lot to the university, if we look deeply just for play slides we do not have to buy a laptop which cost $300 and also the lecturer have to carry the laptops all the times from the faculty to classes, moreover most of the times the laptops are not available. Overcome above statement, all the laptops can be replaced to “Raspberry Pi” which cost$35 and it does not need any maintenance

Hemodynamic Comparison between modified saddle block and subarachnoid block for Transurethral Resection of Prostate

BACKGROUND:   Spinal anesthesia is often the mode of anesthesia in transurethral resection of prostate (TURP) albeit with risk of hypotension. However, hemodynamic derangement is often less pronounced in saddle block. This study was conducted to compare the mean fall in Mean arterial Pressure (MAP) and Heart rate (HR) between modified saddle block and subarachnoid block for TURP.  OBJECTIVE:   To compare the mean fall in MAP and HR between modified saddle block and subarachnoid block for TURP.  METHODS:   In this randomized controlled trial 120 patients undergoing elective TURP were included and divided into two groups. Group A Patients received subarachnoid block and Group B received modified saddle block. Baseline hemodynamics were recorded before and then at 5 minutes after anesthesia. All the collected data was entered into SPSS version 22 and analyzed. Quantitative data like age, BMI, ASA-PS score, duration of surgery and baseline hemodynamics were presented as means and standard deviations. The fall of mean arterial pressure (MAP) & heart rate (HR) were compared among groups by independent t test and P value < 0.05 was considered as statistically significant.   RESULTS:  Mean fall in MAP was 8.98±1.28 mmHg and 3.13±0.68 mmHg (p<0.001) in group A and B, respectively. Mean fall in HR was 7.17±0.98 and 2.78±0.59 (p<0.001) in group A and group B, respectively.  CONCLUSION:   Modified saddle block resulted in significantly decreased fall in MAP and HR as compared with subarachnoid block for TURP.  KEY WORDS:   Modified Saddle Block; Subarachnoid Block; Mean Arterial Pressure &nbsp

Impact of Training and Development on Organization Performance with Mediating Role of Intention to Quit as Human Resource Quality Cost

The study is focused on the analysis of the impact of the training and development efforts in the  Small  and Medium  Enterprises  of  Pakistan  on  the  intention  of  employees  to  leave  the organization  considering  it  as  an  expense  and  the  wastage  of  time  and  resources  by  the organization.  The  study  will  also  evaluate  the  ultimate  impact  of  the  intentions  of  the employees  on  the  performance  of  the  organization.  The salary  based  employees  of  the organizations  having  5 –  250  employees  have  been  selected  on  the  basis  of  stratified sampling  technique  for  the  data  collection  purposes.  Out  of 600  questionnaires  distributed, 290  were  returned  and  278  were  used  for  the  study.  The relationship of training and development and organization performance has been found to be positively mediated by the intention of employees to quit the organizations. The positive relationship might exist due to the  number  of  other  factors  like  inflation,  less  job  opportunities  existing  in  the  Pakistani context. The study will be highly significant for the practitioners in the SMEs, shifting their focus towards the increased training and development efforts