Sub-wavelength position measurements with running wave driving fields

A scheme for sub-wavelength position measurements of quantum particles is discussed, which operates with running-wave laser fields as opposed to standing wave fields proposed in previous setups. The position is encoded in the phase of the applied fields rather than in the spatially modulated intensity of a standing wave. Therefore, disadvantages of standing wave schemes such as cases where the atom remains undetected since it is at a node of the standing wave field are avoided. Reversing the directions of parts of the driving laser fields allows to switch between different magnification levels, and thus to optimize the localization.Comment: 4 pages, 4 figure

The impact of human capital outsourcing on human capital management practices in Karachi pharmaceutical industry

Purpose: The aim of this research is to examine relationship between Human Capital Management (HRM) and Human Resource (HR) Outsourcing in the Pharmaceutical sector. The specific objective is to find out that how important is HRM for an Organization to perform its operations more efficiently, and at what level Human Resource Outsourcing is affecting it. Literature review: Literature review shows that HR outsourcing has positive impact on HRM for an Organization to perform its operations more efficiently. Methods: In order to conduct this research the methodology that has been used is quantitative in nature and closed ended Questionnaire was used to collect data. The universe of study was the employees of Pharmaceutical industry in Karachi Pakistan. The responses of each respondent were thoroughly analyzed by using SPSS software, and the results show that there is a negative relationship between the Human Capital Management (Gaining Knowledge, Current Trend of Business Environment, Organization Managing Their Human Asset and Practices and Policies Regarding Human Resource) and HR Outsourcing. Conclusions: It is concluded that all Independent Variables have the strongest Positive correlation with each other. There are lots of constraints, which any organization faces in terms of time, finance and, in some cases factors like strategic focus.Human Capital Management, Karachi, Pharmaceutical, Outsourcing

Coherent control of the Goos-Hanchen shift

Journals published by the American Physical Society can be found at http://publish.aps.org/The behavior of the Goos-Hanchen (GH) shifts in the reflected and transmitted light beam which is incident on a cavity containing an intracavity medium of three-level or four-level atoms with electromagnetically induced transparency (EIT) is discussed. We report a coherent control of the GH shift in a fixed configuration or device via superluminal and subluminal wave propagation. For superluminal wave propagation, we observe negative GH shifts in the reflected part of the incident light whereas the shifts are positive in the transmitted light beam. This corresponds to the negative group index of the cavity in the former case and positive group index of the cavity in the latter. For subluminal wave propagation, the behavior of the GH shifts in the reflected light changes and positive shifts appearhowever, the GH shifts in the transmitted light remains positive. The corresponding group index of the cavity is positive in both cases

Entangled radiation via a Raman-driven quantum-beat laser

Journals published by the American Physical Society can be found at http://publish.aps.org/We propose a scheme for the entanglement generation of two cavity modes using a four-level Raman-driven quantum-beat laser (QBL). The atomic coherence is generated by a Raman-type two-photon process. Two different sufficient conditions for entanglement generation have been investigated. The effect of cavity losses and strength of the driving fields on entanglement generation is studied for different initial states of the resonant cavity modes. The results are in agreement with the earlier scheme for the entanglement generation using a directly driven quantum-beat laser. We observe entanglement generation even for high cavity losses and with low strength of the driving fields. Further, there is no dipole-forbidden transition in the Raman-driven QBL system. Thus the proposed scheme for the entanglement generation is experimentally more viable as compared to the previous directly driven QBL system

Hanbury Brown-Twiss effect and thermal light ghost imaging

We show that the essential physics of the Hanbury Brown-Twiss (HBT) and the thermal light ghost imaging experiments is the same, i.e., due to the intensity fluctuations of the thermal light. However, in the ghost imaging experiments, a large number of bits information needs to be treated together, whereas in the HBT there is only one bit information required to be obtained. In the HBT experiment far field is used for the purpose of easy detection, while in the ghost image experiment near (or not-far) field is used for good quality image.Comment: 10 pages, 3 figure

Securing Cognitive Radio Networks using blockchains

Due to the increase in industrial applications of Internet of Things (IoT), number of internet connected devices have been increased accordingly. This has resulted in big challenges in terms of accessibility, scalability, connectivity and adaptability. IoT is capable of creating connections between devices on wireless medium but the utilization of scarce spectrum in efficient manner for the establishment of these connections is the biggest concern. To accommodate spectrum allocation problem different radio technologies are being utilized. One of the most efficient technique being used is cognitive radio, which dynamically allocate the unlicensed spectrum for IoT applications. Spectrum sensing being the fundamental component of Cognitive Radio Network (CRN) is threatened by security attacks. Process of spectrum sensing is disturbed by the malicious user (MU) which attacks the primary signal detection and affects the accuracy of sensing outcome. The presence of such MU in system, sending false sensing data can degrade the performance of cognitive radios. Therefore, in this article a blockchain based method is proposed for the MU detection in network. By using this method an MU can easily be discriminated from a reliable user through cryptographic keys. The efficiency of the proposed mechanism is analyzed through proper simulations using MATLAB. Consequently, this mechanism can be deployed for the validation of participating users in the process of spectrum sensing in CRN for IoTs.publishe

Impact of Performance Appraisal Politics on Work Outcome: Multidimensional Role of Intrinsic Motivation and Job Satisfaction

The current study focus on performance politics regarding appraisal in order to analyze the performance of employees, to interpret job satisfaction, organizational commitment, and employee’s turnover in the banking sector of Pakistan. At the same time, employees’ intrinsic motivation and satisfaction will were investigated as possible mediators. For this purpose, data was collected from the selected sample of various bank employees across different districts in KPK and Islamabad. Data was analyzed through exploratory factor analysis and structural equation modeling using SPSS & AMOS software. Results indicate that the relationship between performance appraisal politics (PALP) and employee’s commitment level is negative and significant, while performance appraisal politics is positively and significantly associated with turnover intentions. Interestingly, the relationship between job performance politics and job satisfaction was insignificant. In order to validate the meditational affect (Baron & Kenny, 1986) meditational technique was applied. Since the relationship between PAPL (Performance Appraisal Politics) and job satisfaction is found to be insignificant; hence, it is concluded that job satisfaction could not mediate the relationship between PAPL and turnover intention. In the proceeding step, the relationship between PAPL and turnover intention was checked with intrinsic motivation as a mediator. It was concluded that intrinsic motivation strongly mediated the relationship between PAPL and TRI. Based on the findings of the current study, future direction, managerial implication and limitations are also provided in the last section.&nbsp

Development and Evaluation of Sustained Release Microspheres of Repaglinide for Management of Type 2 Diabetes Mellitus

Sustained release dosage form is essential for diabetic patients which is marked by continuous therapy along with high margin of safety, patient compliance and fulfill economical features. Repaglinide is a class of meglitinide, a drug of choice to formulate microspheres by utilizing sodium alginate, olibanum gum and pectin in different ratios by using ionic-gelation method. Excellent results were found in rheological behavior and release studies. Microspheres size and percentage yield was found in the range of 694 ?m to 727 ?m and 73% to 75% respectively. SEM revealed that microspheres were discrete, spherical and free flowing. Entrapment efficiency was variable, ranges from 55% to 75%. Uniform drug release was observed in drug release kinetics, followed Higuchi model with non-fickian release. These microspheres proved to be suitable for oral sustained release of repaglinide. Keywords: Repaglinide, Microsphere, Ionic-gelation method, Olibanum gum, Pecti

Epidemiology and Control of Congo Fever in Sacrificial Animals of Pakistan

The cases and deaths due to Crimean-Congo haemorrhagic fever (CCHF) [49] virus commonly known as Congo virus (fatality rate 15%) have been reported throughout Pakistan from the last five years especially during religious occasion, Eid-ul-Azha. The annual increase in death rates due to CCHF demonstrate the importance of awareness of Congo fever at academia as well as public level. The symptoms of Congo fever which appear one to nine days after tick bite, include sudden high fever, muscle aches, abdominal pain, headache, dizziness, sore eyes, jaundice, mood swings, confusion, aggression, and sensitivity to light. The other signs include sore throat, joint pain, vomiting, diarrhea, hemorrhages, and bleeding from skin and large intestine. The Infection has been reported in many species of wild as well as domestic animals including hares, cattle, sheep, goats, dogs, mice and hedgehogs. At least 31 species of Hyalomma, Boophilus, Rhipicephalus, Dermacentor (Ixodidae: hard ticks) act as vector of CCHF in which transovarial, transstadial and venereal transmission occurs. The virus attacks the immune system of the host and influences the immune cells. The Congo fever virus can be isolated from blood, plasma and many body tissues (kidneys, liver, spleen, lungs, brain and bone marrow). Mice inoculation, enzyme-linked immunosorbent assay (ELISA), reverse transcription polymerase chain reaction (RT-PCR) can be used for detection of the infection. Furthermore, IgM and IgG antibodies against CCHFV can also be detected and quantified. Education of general public, tick control with acaricides, use of anti-CCHFV immunoglobulin, usage of approved repellents to prevent tick bites, wearing neutral-coloured garments, application of a permethrin spray to the clothing, avoiding tall grasses and shrubs, applying sunscreen, avoiding direct contact with the blood or tissues of animals are the factors for successful prevention of the infection