427 research outputs found

    Investigating Equity Sensitivity as a Moderator of Relations Between Self-Efficacy and Workplace Attitudes

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    This study integrated measures of equity sensitivity and self-efficacy in an effort to better understand how these variables may affect job satisfaction, organizational commitment, and intent to leave. Equity sensitivity denotes how sensitive people are to overreward and underreward situations and has recently enhanced the accuracy of equity theory in predicting job satisfaction in social exchange situations. Self-efficacy, or task-specific self-confidence, is a central component of Bandura\u27s social cognitive theory, and its influence on individuals\u27 goals, efforts, and task persistence is well documented. Results from a field study of 242 employees in a health care firm support the moderating role of equity sensitivity in relations between self-efficacy and job satisfaction and between self-efficacy and intent to leave, but not between self-efficacy and organizational commitment. (PsycINFO Database Record (c) 2010 APA, all rights reserved

    Psychological Influences on Referent Choice*

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    This article discusses the psychological influences on referent selection. The nature of contemporary work environments, ones characterized by instability and uncertainty, may create increased needs on the part of individuals for comparative information. Individuals use social comparisons for managing both uncertainty and environmental change, and for making critical decisions about one\u27s job. Most literature on referent selection can be categorized along two basic schema: identification of the types of referents that exist and examination of the outcomes that result from referent selection. Studies have identified a multitude of potential referents, primarily drawn from the outcomes being examined, including pay referents, referents linked with one\u27s occupation, education, age and job, and referents derived from an employee\u27s social network

    Enforcing Multi-user Security Policies in Cloud Computing

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    The user can access data from any server with unlimited data with the security. Multi-user tendency will cost lesser than the expected cost in the single user environment. While dealing with cloud computing, confidential data can be secured from the unauthorized access and internal threats. Cloud servers use smart techniques for achieving this requirement like encryption and decryption of data. The database is stored in the encrypted format on the server & a complex query can be fired on it. Cloud server will maintain the access control policies to reveal the data from the database that are in the encrypted format. In the access control policies, we use KMA (Key Management Authority) which provides the keyset for encryption & decryption of the database. The attributes entered by the user will create one public key which is cipher text based. So this technique is called as cipher text based technique. This key is used for encryption. While registering, user will choose the policy and select the attributes on which security policy is based. Because of this it is called as cipher text policy attribute based encryption (CP-ABE). To achieve this complex encryption, we can use many algorithms like AES or DES encryption algorithms with CPABE algorithm. This scheme allows making SQL-like queries on encrypted database in multiuser environment while at the same time, the database owner assign different access rights to users that defines a specific policy for the database. The major use of this encryption is privacy, access control and data confidentiality and multi-user access control.DOI:http://dx.doi.org/10.11591/ijece.v3i4.306

    KONTRIBUSI DAN STRATEGI SEKTOR PERIKANAN DALAM MENINGKATKAN PENDAPATAN ASLI DAERAH DI KABUPATEN TIMOR TENGAH SELATAN

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    This research aims to determine how much the contribution of the fisheries sector to local own-source revenue and also to find out how to increase local revenue from the fisheries sector. The data collection techniques used in this study were interviews and documentation. The data analysis technique used is the contribution analysis and SWOT analysis. Contribution analysis used to find out how much the fisheries sector's contribution to Regional Original Income, SWOT analysis is used to find out how to increase local own-source revenue from the fisheries sector. Based on the data analysis conducted, it is concluded that: The contribution of the fisheries sector to local own-source revenue in 2015 was 0.0011%; in 2016 it increased to 0.0029% than in 2017 increased to 0.0032%. However, in 2018 it decreased to 0.0027%, but in 2019 it increased again to 0.0040%. Then from the SWOT analysis, the Regional Government of South Central Timor Regency can increase local own-source revenue from the fisheries sector by optimizing the available funds to cultivate a supportive geographic and training Human Resources to take advantage of market availability

    Lactobacillus acidophilus Derived Biosurfactant as a Biofilm Inhibitor: A Promising Investigation Using Microfluidic Approach

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    Background: Biomedical devices and implants are adversely affected by biofilm-associated infections that pose serious public health issues. Biosurfactants (BSs) can combat pathogenic biofilms through their antimicrobial, antibiofilm and antiadhesive capabilities. The objective of our research was to produce biosurfactant (BS) from Lactobacillus acidophilus NCIM 2903 and investigate its antibiofilm, antiadhesive potential using microfluidics strategies by mimicking the micro-environment of biofilm. Methods: Antibiofilm and antiadhesive potential was effectively evaluated using different methods like microfluidics assay, catheter assay, polydimethlysiloxane (PDMS) disc assay. Along with this chemical and physical characteristics of BS were also evaluated. Results: Cell free biosurfactant (CFBS) obtained was found to be effective against biofilm which was validated through the microfluidic (MF) or Lab on Chip (LOC) approach. The potency of CFBS was also evaluated on catheter tubing and PDMS surfaces (representative bioimplants). The efficacy of CFBS was also demonstrated through the reduction in surface tension, interfacial tension, contact angle and low critical micelle concentration. Conclusion: CFBS was found to be a potent antimicrobial and antibiofilm agent. We believe that perhaps this is the first report on demonstrating the inhibiting effect of Lactobacillus spp. derived CFBS against selected bacteria via LOC approach. These findings can be explored to design various BSs based formulations exhibiting antimicrobial, antibiofilm and antiadhesive potential for biomedical applications

    Inhibition of pathogenic bacterial biofilms on PDMS based implants by L. acidophilus derived biosurfactant

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    Abstract Background Lactobacillus spp. predominantly shows its presence as a normal mucosal flora of the mouth and intestine. Therefore, the objective of our research is to investigate the in-vitro conditions for the prospective of medically valuable biosurfactants (BSs) derived from Lactobacillus spp. Biosurfactant (BS) obtained from Lactobacillus spp. exhibit antibiofilm and antiadhesive activity against broad range of microbes. In the present study we investigated the production, purification and properties of key components of the cell-associated-biosurfactant (CABS) from Lactobacillus acidophilus NCIM 2903. Results Extracted, purified, freeze-dried CABS shows reduction in surface tension (SFT) of phosphate buffer saline (PBS @pH 7.0) from 71 to 26 mN/m and had a critical micelle concentration (CMC) of 23.6 mg/mL. The CABS showed reduction in interfacial tension (IFT) against various hydrocarbons and had effective spreading capability as reflected through the decrease in contact angle (CA) on different surfaces (polydimethylsiloxane - PDMS, Teflon tape, glass surface, polystyrene film and OHP sheet). The anionic nature of CABS displayed stability at different pH and temperatures and formed stable emulsions. Thin layer chromatography (TLC) and Fourier transform infrared spectroscopy (FTIR) revealed CABS as glycolipoprotein type. The Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (SDS-PAGE) showed presence of multiple bands in a molecular range of 14.4 to 60 kDa, with prominent bands of 45 kDa. The CABS has significant antiadhesion and antibiofilm activity against tested bacterial strains. Conclusion The current challenging situation is to develop methods or search for the molecules that will prevent the formations of biofilm on medical bioimplants of PDMS based materials. These findings are supportive for the use of Lactobacilli derived BS as potential antiadhesive agent on various surfaces of biomedical devices

    Organ Donation and Utilization in the United States, 1997–2006

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75743/1/j.1600-6143.2008.02171.x.pd

    Vitamin C Prevents Hypogonadal Bone Loss

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    Epidemiologic studies correlate low vitamin C intake with bone loss. The genetic deletion of enzymes involved in de novo vitamin C synthesis in mice, likewise, causes severe osteoporosis. However, very few studies have evaluated a protective role of this dietary supplement on the skeleton. Here, we show that the ingestion of vitamin C prevents the low-turnover bone loss following ovariectomy in mice. We show that this prevention in areal bone mineral density and micro-CT parameters results from the stimulation of bone formation, demonstrable in vivo by histomorphometry, bone marker measurements, and quantitative PCR. Notably, the reductions in the bone formation rate, plasma osteocalcin levels, and ex vivo osteoblast gene expression 8 weeks post-ovariectomy are all returned to levels of sham-operated controls. The study establishes vitamin C as a skeletal anabolic agent. © 2012 Zhu et al
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