A Generalized Space-Efficient Algorithm for Quantum Bit String Comparators

Quantum Bit String Comparators (QBSC) operate on two sequences of n-qubits, enabling the determination of their relationships, such as equality, greater than, or less than. This is analogous to the way conditional statements are used in programming languages. Consequently, QBSCs play a crucial role in various algorithms that can be executed or adapted for quantum computers. The development of efficient and generalized comparators for any $n$-qubit length has long posed a challenge, as they have a high-cost footprint and lead to quantum delays. Comparators that are efficient are associated with inputs of fixed length. As a result, comparators without a generalized circuit cannot be employed at a higher level, though they are well-suited for problems with limited size requirements. In this paper, we introduce a generalized design for the comparison of two $n$-qubit logic states using just two ancillary bits. The design is examined on the basis of qubit requirements, ancillary bit usage, quantum cost, quantum delay, gate operations, and circuit complexity, and is tested comprehensively on various input lengths. The work allows for sufficient flexibility in the design of quantum algorithms, which can accelerate quantum algorithm development

Pneumoperitoneum, pneumoretroperitoneum, pneumomediastinum and extensive subcutaneous emphysema in a patient with ulcerative colitis: a case report.

Abstract INTRODUCTION: Pneumo-mediastinum and subcutaneous emphysema are rare presentations of lower gastrointestinal tract perforation. PRESENTATION OF CASE: We are presenting the case of a middle aged man diagnosed with UC who presented with dyspnea and subcutaneous emphysema, attributed to multiple perforations including the stomach and colon. CASE DISCUSSION: Patients with ulcerative colitis (UC) are at an increased risk of perforations due to friability of colonic mucosa given the chronic inflammation and relapsing flares. Chronic use of steroids further predisposes to stress ulcers. These pathologies sometimes coexist and identification of each is crucial for the appropriate treatment plan. CONCLUSION: The case allows for a learning opportunity focusing on coexisting pathologies which may be differentiated based on anatomical knowledge and patient presentation. Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserve

On the estimation of population variance using auxiliary attribute in absence and presence of non-response

In this article we proposed a new class of estimators for estimating thefinite population variance using available auxiliary attribute in absence and presence of non-response problem. Properties such as bias and mean square error of the proposed class are derived up to the first order of approximation. The proposed class is more efficient than the Singh et al. (1988), Shabbir and Gupta (2007), Singh and Solanki (2013a), usual sample variance and regression estimators

Undermining alienative commitment through spiritual leadership: a moderated mediation model of social capital and political skill

PurposeThe purpose of the present study is to examine the relationship between spiritual leadership and employees' alienative commitment to the organization, both directly and indirectly, via employee social capital. We also test the role of employee political skill as a boundary condition of the indirect spiritual leadership–alienative commitment link.Design/methodology/approachTime-lagged data were collected from 491 employees in various manufacturing and service organizations. Data were analyzed using structural modeling equation in Mplus (8.6).FindingsSpiritual leadership was negatively associated with alienative commitment, both directly and indirectly, via social capital. Employee political skill moderated the indirect relationship between spiritual leadership and alienative commitment, such that the relationship was stronger when employee political skill was high (vs low).Practical implicationsThe demonstration of spiritual leadership's behaviors by both managers and employees can develop employees' social capital at work, which in turn can reduce employees' negative commitment to the organization. Likewise, improving employees' political skills can help leadership diminish alienative commitment.Originality/valueThe present work contributes to the literature on spiritual leadership by foregrounding how and why spiritual leadership undermines employee alienative commitment to the organization. By doing so, the study also enhances the nomological networks of the antecedents and outcomes of social capital and contributes to the scant literature on negative alienative commitment. Given the prevalence and negative repercussions of alienative commitment for employees' and organizations' productivity and performance, our findings are timely and relevant

Mass transfer efficiency of a tall and low plate free area liquid pulsed sieve-plate extraction column

Acknowledgements The authors would like to acknowledge Chakwal group of industries for funding the project. Ms. Madiha, Ms. Zona, Mr. Sohaib, Mr. Abdullah, Mr. Mudassar, and Mr. Salahuddin also deserve our acknowledgements for their assistance in different ways.Peer reviewedPublisher PD

DISSOLUTION BEHAVIOR OF BIOACTIVE GLASS CERAMICS WITH DIFFERENT CaO/MgO RATIOS

In this work, powders of three different compositions, each having 34 SiO2-14.5 P2O5-1 CaF2-0.5 MgF (% wt) and ratio of CaO/MgO varying from 11.5:1 to 1:11.5 were thoroughly mixed and melted under oxy-acetylene flame in a fire clay crucible that made the glass formation cheaper in time and cost. The melt of each composition was quenched in water to form three different glasses. Every glass was sintered at 950°C to form three glass ceramics named G1, G2 and G3 respectively. To study the dissolution behavior, each sample was immersed in a simulated body fluid (SBF) for 2, 5, 10, 20 and 25 days at room temperature. Thin film XRD analysis revealed that the samples with larger CaO/MgO ratio exhibited better bioactivity. pH of SBF increased efficiently in case of G1 whereas in case of G2 and G3, this increase was slower due to greater amount of MgO. The concentrations of Ca, P, Mg and Si ions were measured by Atomic Absorption Spectroscopy. EDS analysis showed the increase in P and Ca ions and presence of C in G1 after 5 days immersion and after 10 days, in case of G2 indicating the higher formation rate of hydroxycarbonate Apatite layer in G1 as compared to G2 due to greater CaO/MgO ratio whereas in G3 Mg-hydroxycarbonate apatite (Ca(Mg)5(CO3)(PO4)3(OH)) (heneuite) layer was recognized after 20 days showing the least bioactivity due to very large amount of Mg and the least CaO/MgO ratio

Follow-up bibliometric analysis of neurosurgical publications from Pakistan and institutional comparison with other countries using h-index and i-10 Index

Aim: The aim of the study was to analyze the neurosurgical research output of Pakistan and compare it with that of developed countries.Methodology: We conducted a bibliometric analysis of publically available databases for all neurosurgical publications from Pakistan. All indexed peer-reviewed publications from January 2009 to December 2014 where at least one author was affiliated with any neurosurgical departments in Pakistan and research was conducted in Pakistan were selected. Manual and electronic search was done using MeSH terms to search for articles from Pakistan. Articles were then categorized according to design, subspecialty, region, and year.Results: Our search identified 121 articles during the defined study period (mean = 20.16 ± 5.2 papers/year). A relatively constant increase was noticed for the last 6 years, i.e., 2009-2014. From the total 121 references, 100 (82.4%) publications were from one city, and on subanalysis, 80 (66.1%) were from a single institution. Three primary authors cumulatively contributed to 76 (62.8%) of these publications. Almost two-thirds (n = 76, 62.8%) of these publications were published in either regional or international journals while only 37.2% (n = 45) were published in local nonneurosurgery-specific journals. Only one study in the 6-year study period was with Level I evidence (meta-analysis).Conclusion: Neurosurgery research in Pakistan has shown modest improvement in terms of quality and quantity. Collaboration between various centers and channelizing different resources to create national data registries along with basic science laboratories is much needed

Prognostic value of 1p/19q chromosomal codeletion in patients with oligodendroglioma

Oligodendrogliomas are common intra-axial primary brain tumours, and carry special significance due to several key features, which when present provide better prognosis compared to other intra-axial tumours. One of these features is presence of 1p/19q chromosomal codeletion that seems to not only be a marker of better prognosis but also signifies better response to chemotherapy. Herein the authors review the literature for evidence of the prognostic value of 1p/19q codeletion in OD

The Outcome of Unreamed Interlocking Nail for the Management of Open Fractures of Tibial Shaft: An Observational Case Series

Objective: This observational case series was designed to see of early debridement and unreamed interlocking nail have emerged as a better modality in the management of open fractures of the shaft of the tibia.Materials and Methods: This descriptive case series study was conducted at the Department of orthopedics, Wah general Hospital Rawalpindi for a period of 6 months. Through non-probability purposive sampling, 60 cases of open fracture of the tibia were included. Unreamed interlocking nail was inserted in all the sixty patients and each nail was statically locked with one screw proximally and one screw distally. Patients were followed regularly i.e on the 1st then 10th, 20th, 30th post-operative day then monthly for 9 months in OPD, and data for union and infection were recorded. Results: The mean age for all patients was 32.82 ± 8.87years. There were 49 (81.7%) male and 11 (18.3%) female patients involved in this study. There were 27 (45%) patients who presented with Gustilo Anderson type I fracture, 23 (38.3%) had Gustilo Anderson type II and 10 (16.7%) had Gustilo Anderson type IIIA. We observed that there were 17 (28.3%) patients who had a transverse fracture, 22 (36.7%) had an oblique fracture, 8 (13.3%) had a spiral fracture and 13 (21.7%) had comminuted fracture. Union occurred within 5 months in 50 (83.3%) patients, 9 (15 %) showed delayed union while 1 (1.7%) patient had non-union after a course of follow-up. Infection was also observed in follow-up in only 8 (13.3%) cases while 52 (86.7%) cases did not show any sign of infection. Conclusion: Unreamed interlocking nailing is quite enough to manage the patients presenting with an open tibial fracture in terms of a higher union rate with low infection and non-union rate