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Journal articles on the topic 'WI 000'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Eriksson, Niklas, and Asle Fagerstrøm. "The Relative Impact of Wi-Fi Service on Young Consumers’ Hotel Booking Online." Journal of Hospitality & Tourism Research 42, no. 7 (March 1, 2017): 1152–69. http://dx.doi.org/10.1177/1096348017696844.

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This study aims to investigate the relative impact of Wi-Fi on consumers’ hotel bookings. It investigates two dimensions of Wi-Fi (price and reviews) in relation to overall hotel ratings, brand, and price per night. A scenario was arranged whereby participants (n = 120) booked a hotel room online. The results (r = .991, p = .000) of a conjoint analysis show that Wi-Fi price and Wi-Fi reviews affect the consumers’ booking, but not as much as hotel ratings and price per night. When looking only at Wi-Fi, results show that previous guests’ Wi-Fi reviews have a higher impact on booking than Wi-Fi price. Further analysis shows that Wi-Fi can be a “deal breaker” in a competitive and/or undifferentiated market. We propose that the impact of Wi-Fi can be understood as rule-governed behavior. Consequently, behavioral understanding of the impact of Wi-Fi could aid hotel managers in developing more effective marketing strategies.

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2

De Schrijver, K. "Outbreak of measles among adolescents, Belgium, 1996." Eurosurveillance 1, no. 6 (June 1, 1996): 46–47. http://dx.doi.org/10.2807/esm.01.06.00186-en.

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Measles was very common in Belgium before 1985, affecting 95% of children before they reached the age of 15 years. In 1984 the incidence of measles, calculated using data from a general practitioner surveillance system, was 823/100 000 inhabitants (2). Wi

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3

Romano-Munive, Adriana Fabiola, J. Jesus García-Correa, Luis F. García-Contreras, José Ramírez-García, Luis Uscanga, Varenka J. Barbero-Becerra, Carlos Moctezuma-Velázquez, et al. "Can topical epinephrine application to the papilla prevent pancreatitis after endoscopic retrograde cholangiopancreatography? Results from a double blind, multicentre, placebo controlled, randomised clinical trial." BMJ Open Gastroenterology 8, no. 1 (February 2021): e000562. http://dx.doi.org/10.1136/bmjgast-2020-000562.

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Background and study aimsPost-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is a complication associated with important morbidity, occasional mortality and high costs. Preventive strategies are suboptimal as PEP continues to affect 4% to 9% of patients. Spraying epinephrine on the papilla may decrease oedema and prevent PEP. This study aimed to compare rectal indomethacin plus epinephrine (EI) versus rectal indomethacin plus sterile water (WI) for the prevention of PEP.Patients and methodsThis multicentre randomised controlled trial included patients aged >18 years with an indication for ERCP and naive major papilla. All patients received 100 mg of rectal indomethacin and 10 mL of sterile water or a 1:10 000 epinephrine dilution. Patients were asked about PEP symptoms via telephone 24 hours and 7 days after the procedure. The trial was stopped half way through after a new publication reported an increased incidence of PEP among patients receiving epinephrine.ResultsOf the 3602 patients deemed eligible, 3054 were excluded after screening. The remaining 548 patients were randomised to EI group (n=275) or WI group (n=273). The EI and WI groups had similar baseline characteristics. Patients in the EI group had a similar incidence of PEP to those in the WI group (3.6% (10/275) vs 5.12% (14/273), p=0.41). Pancreatic duct guidewire insertion was identified as a risk factor for PEP (OR 4.38, 95% CI (1.44 to 13.29), p=0.009).ConclusionSpraying epinephrine on the papilla was no more effective than rectal indomethacin alone for the prevention of PEP.Trial registration numberThis study was registered with ClinicalTrials.gov (NCT02959112).

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Kameyama, Y., G. Shimoi, S. Kubo, and R. Hashizume. "102 REPEATED OVARIAN STIMULATIONS BY EXOGENOUS GONADOTROPIN COULD ALTER ATP CONTENT AND MITOCHONDRIAL DISTRIBUTION IN MOUSE OOCYTES." Reproduction, Fertility and Development 25, no. 1 (2013): 198. http://dx.doi.org/10.1071/rdv25n1ab102.

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Ovarian stimulation (OS) by exogenous gonadotropin enhances the availability of mammalian oocytes but compromises their developmental competence (Combelles and Albertini 2003 Biol. Reprod. 68, 812–821). Recently, several studies have reported mitochondrial function-related abnormalities in oocytes after single and repeated OSs. Because mitochondria can directly influence fertilization outcomes (El Shourbagy et al. 2006 Reproduction 131, 233–245), this study aimed to determine the relationship between mitochondria-related parameters and developmental competence on the basis of ATP content, mitochondrial DNA (mtDNA) copy number, mitochondrial distribution, and IVF results for oocytes after repeated OSs. Ovulated oocytes were recovered from ICR female mice treated with 7.5 IU of eCG and 5 IU of hCG at an interval of 48 h in 1 (control) to 3 stimulation cycles, which were performed at intervals of either 5 or 10 d (n = 15–25 in each treatment group). The ATP content in oocytes was determined using a luminometer and commercial kits (BacTiter-Glo; Promega, WI, USA; n = 15–29 in each treatment group). The mtDNA copy number in oocytes was quantified by performing absolute quantification with real-time PCR (n = 4–8 in each treatment group). Mitochondrial distribution in oocytes stained by rhodamine123 was observed under a confocal microscope (n = 12–26 in each treatment group). These analyses were performed only for morphologically normal oocytes. The data were analyzed by one-way ANOVA, followed by Fisher’s least significant difference, or by the chi-square test. Some mice did not ovulate in the third stimulation cycle for both intervals (5-d interval, 32%; 10-d interval, 80%). The mean numbers of ovulated oocytes gradually decreased with progression of the stimulation cycles. The ATP content of the oocytes significantly decreased both in the second and third stimulation cycles, performed with a 5-d interval (control, 1.038 ± 0.117 pmol; second cycle, 0.852 ± 0.189 pmol; third cycle, 0.932 ± 0.272 pmol). The mean mtDNA copy number in oocytes did not change significantly but varied widely in the third stimulation cycle (control, 146 000 ± 21 000; 5-d interval, 135 000 ± 35 000; 10-d interval: 148 000 ± 50 000; mean ± SD). The mitochondrial staining patterns were classified into homogeneous, aggregation, and perinuclear accumulation. The rates of aggregation and perinuclear accumulation increased after repeated stimulation cycles. The blastocyst rates did not significantly differ among the treatment groups after IVF (75–82%). Repeated OSs not only decreased the number of ovulated oocytes but also caused changes related with mitochondrial function, even in the morphologically normal ovulated oocytes. Translocation of active mitochondria, which are associated with energy production, has some functional correlation with successful pre-implantation development (Suzuki et al. 2006 J. Mamm. Ova. Res. 23, 128–134). Changes in mitochondrial distribution might compensate for the negative effect of the decrease in ATP content and low mtDNA copy number after repeated OSs to help reach the blastocyst stage.

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5

Riedl, Christoph, Johannes Schöfmann, and Matthias Müller. "WI-Studierendenforum." WIRTSCHAFTSINFORMATIK 49, no. 4 (August 2007): 314–17. http://dx.doi.org/10.1007/s11576-007-0070-1.

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Valentin, C., R. West, and C. Herr. "269 THE ENHANCEMENT OF THE SENSITIVITY OF A PCR-BASED AVIAN SEX DETERMINATION ASSAY." Reproduction, Fertility and Development 20, no. 1 (2008): 214. http://dx.doi.org/10.1071/rdv20n1ab269.

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For over a decade it has been possible to externally sex monomorphic birds using PCR. A major drawback of the protocol developed by Richard Griffiths is that DNA from at least 20 000 cells is needed (Griffiths et al. 1996 Proc. Royal Soc. London B 263, 1249–1254). Our study attempted to decrease the number of cells required. A sequence within the chromobox-helicase-DNA-binding (CHD) gene, located on the sex chromosomes of all avian species, was amplified. The sequence lengths were 362 and 354 base pairs for the CHD-W and CHD-Z, respectively. The polyacrylamide gel electrophoresis (PAGE) purified primers used were 5´-TCTGCATCGCTAAATCCTTT-3´ and 5´-CTCCCAAGGATGAGRAAYTG-3´ (2.5 µm) (IDT, Inc., San Jose, CA, USA). All assays used Taq DNA polymerase (2.7 U) (M0273L, New England BioLabs, Ipswich, MA, USA) and deoxyribonucleotides (5 µm) (C01581, GenScript Corp, Piscataway, NJ, USA). Lymphocytes from chickens (Gallus domesticus) (10 cells/2 µL) were used as the DNA source for all experiments. Assays were run with positive and negative DNA controls. The DNA was replicated in a Corbett Rapid Thermocycler (Model FTS-IS, Corbett Research, Sydney, Australia) in 20 µL volumes with an annealing temperature of 48�C. All of the PCR products were separated using PAGE. An 8% gel (17:1, con- to bis-acrylamide) with 10 mm TRIS (pH 8) was formed in an agarose gel chamber (M12 Electrophoresis Unit, Edvotek, Bethesda, MD, USA) under Ar. The gel was placed in 10 mm TRIS (pH 8) in the electrophoresis apparatus and the PCR products were added to wells. The applied voltage was 200 and the duration was 2 h (PS500ST, Hoefer Scientific Instruments, San Francisco, CA, USA). The gel was stained for 30 min in 1.25 µm ethidium bromide in 100 mL of 10 mm TRIS (pH 8). Destaining was carried out over 45 min in 100 mL of H2O. The gel was viewed using a transilluminator (3–300, Fotodyne, Hartland, WI, USA) and photographed with an Olympus digital camera. An initial experiment established Griffiths' assay in our lab. Results were consistent with published data, albeit with the same troubling signal-to-noise problems. No signals were observed in assays with less than 20 000 cells. The next experiment compared the use of Griffiths' amplification buffer to a buffer we developed, Bart: 50 mm barbital, 1% dextran T-500, 50 mm KCl, 2.5 mm MgCl2, and 0.035% 2-mercaptoethanol. Signals were produced and a working assay was established with only 10 cells needed, significantly fewer cells than the 20 000 cells necessary for Griffiths' protocol. It was possible to increase the number of productive replication cycles from 35 to 45 without generation of noise. In fact, use of Bart eliminated primer-generated noise, leaving only sexing bands in the gel. Interestingly, when Bart was used with 20 000 cells, no signals were observed. Assays incorporating Bart were run in triplicate and signals were consistently observed. Reduction in the number of cells required for avian sex determination provides potential applications for the sexing of embryos or sexing from a single down feather. Our assay makes sex determination prior to hormonal treatment simple. We are currently replacing the use of the CHD gene with a conserved W-specific sequence.

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Reach, Gérard, Sophie Bentégeat, Isabelle Mounier-Emeury, Brigitte Le Cossec, Sadiyé Yesilmen, Vincent Hirsch, Yohann de Oliveira Granja, and Audrey Minetti. "Pedagogical value of a hospitality awards programme." BMJ Open Quality 8, no. 3 (September 2019): e000576. http://dx.doi.org/10.1136/bmjoq-2018-000576.

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ObjectiveAssistance Publique-Hôpitaux de Paris (AP-HP), the leading university hospital in France, proposed to offer its services to candidate on a voluntary basis for a hospitality award, certifying compliance to a 240-item home-made questionnaire designed by healthcare providers and patients’ representatives. It combined an objective examination of the services and patients’ questionnaires, covering seven domains: reception and information from admission to discharge; cleanliness, comfort and environment; proposed services (eg, access to Wi-Fi); culture, relaxation and well-being; meals; linen and relationship quality with hospital staff. The procedure was completed in two steps: an initial self-evaluation to detect improvable deficiencies, followed by an awarding visit. A service received the hospitality award if at least 80% of the reference criteria were met during this second evaluation. Here, we describe the construction of this hospitality awards programme and present a comparison of the scores obtained during the two steps.Design and methodsRetrospective comparison by usual statistical tests.SettingAP-HP, grouping 39 university hospitals (21 000 beds, 8 million annual patient visits).ParticipantsThe 211 services from 29 different hospitals engaged in the procedure (2017–2019).ResultsOnly one service did not get the award (self-evaluation 83%, visit score 79%). The score was higher during the awarding visit (89.0%±5.6%) than during self-evaluation (85.5%±4.3%, n=211, p<0.00001), with increased scores for the following domains (p<0.005): patient reception and information; cleanliness, comfort and environment; proposed services; culture, relaxation and well-being.Conclusion(1) Internal self-evaluation is feasible. (2) By diffusing criteria of hospitality, the procedure had a pedagogical value leading to rapid and significant improvements. (3) This quality assessment procedure results in an award that can be posted in the departments. By appealing to pride, this procedure should promote hospitality in hospitals.

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Graf, Verena, Daniel Voßkamp, Tobias Hagen, Tobias Bergenthal, and Maren Hesse. "WI-Studierendenforum." WIRTSCHAFTSINFORMATIK 48, no. 2 (April 2006): 143–46. http://dx.doi.org/10.1007/s11576-006-0031-0.

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Veit, Daniel, Dirk Neumann, and Carsten Holtmann. "WI-Aktuell." WIRTSCHAFTSINFORMATIK 48, no. 2 (April 2006): 147–48. http://dx.doi.org/10.1007/s11576-006-0032-z.

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10

Schein, Michaela, and Daniela Schremser. "WI-Studierendenforum." WIRTSCHAFTSINFORMATIK 49, no. 6 (December 2007): 466–68. http://dx.doi.org/10.1007/s11576-007-0101-y.

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Fettke, Peter. "WI – Dissertationen." WIRTSCHAFTSINFORMATIK 50, no. 5 (October 2008): 425. http://dx.doi.org/10.1007/s11576-008-0083-4.

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Kozlova, Elizaveta. "WI – Vergleichende Literaturstudie." WIRTSCHAFTSINFORMATIK 50, no. 5 (October 2008): 418–24. http://dx.doi.org/10.1007/s11576-008-0087-0.

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13

Chaddad, Ahmad. "Automated Feature Extraction in Brain Tumor by Magnetic Resonance Imaging Using Gaussian Mixture Models." International Journal of Biomedical Imaging 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/868031.

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This paper presents a novel method for Glioblastoma (GBM) feature extraction based on Gaussian mixture model (GMM) features using MRI. We addressed the task of the new features to identify GBM using T1 and T2 weighted images (T1-WI, T2-WI) and Fluid-Attenuated Inversion Recovery (FLAIR) MR images. A pathologic area was detected using multithresholding segmentation with morphological operations of MR images. Multiclassifier techniques were considered to evaluate the performance of the feature based scheme in terms of its capability to discriminate GBM and normal tissue. GMM features demonstrated the best performance by the comparative study using principal component analysis (PCA) and wavelet based features. For the T1-WI, the accuracy performance was 97.05% (AUC = 92.73%) with 0.00% missed detection and 2.95% false alarm. In the T2-WI, the same accuracy (97.05%, AUC = 91.70%) value was achieved with 2.95% missed detection and 0.00% false alarm. In FLAIR mode the accuracy decreased to 94.11% (AUC = 95.85%) with 0.00% missed detection and 5.89% false alarm. These experimental results are promising to enhance the characteristics of heterogeneity and hence early treatment of GBM.

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Müller, Günter. "WI – Für Sie gelesen." WIRTSCHAFTSINFORMATIK 50, no. 2 (April 2008): 133–35. http://dx.doi.org/10.1365/s11576-008-0025-1.

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Müller, Günter. "WI – Für Sie gelesen." WIRTSCHAFTSINFORMATIK 50, no. 4 (August 2008): 322–23. http://dx.doi.org/10.1365/s11576-008-0066-5.

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Müller, Günter. "WI – Für Sie gelesen." WIRTSCHAFTSINFORMATIK 50, no. 6 (December 2008): 508–9. http://dx.doi.org/10.1365/s11576-008-0097-y.

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Buhl, Hans Ulrich. "WI – In eigener Sache." WIRTSCHAFTSINFORMATIK 51, no. 2 (December 14, 2008): 161. http://dx.doi.org/10.1007/s11576-008-0136-8.

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Alaggan, Mohammad, Mathieu Cunche, and Sébastien Gambs. "Privacy-preserving Wi-Fi Analytics." Proceedings on Privacy Enhancing Technologies 2018, no. 2 (April 1, 2018): 4–26. http://dx.doi.org/10.1515/popets-2018-0010.

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Abstract As communications-enabled devices are becoming more ubiquitous, it becomes easier to track the movements of individuals through the radio signals broadcasted by their devices. Thus, while there is a strong interest for physical analytics platforms to leverage this information for many purposes, this tracking also threatens the privacy of individuals. To solve this issue, we propose a privacy-preserving solution for collecting aggregate mobility patterns while satisfying the strong guarantee of ε-differential privacy. More precisely, we introduce a sanitization mechanism for efficient, privacy-preserving and non-interactive approximate distinct counting for physical analytics based on perturbed Bloom filters called Pan-Private BLIP. We also extend and generalize previous approaches for estimating distinct count of events and joint events (i.e., intersection and more generally t-out-of-n cardinalities). Finally, we evaluate expirementally our approach and compare it to previous ones on real datasets.

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Baqir, S., N. Al-Zeheimi, A. Bani Orabah, A. Al-kindi, Y. Al-Shakaili, and K. Al-Rasbi. "169 QUALITATIVE ASSESSMENT OF ENDANGERED ARABIAN TAHR/IBEX (HEMITRAGUS JAYAKARI) SEMEN USING BIOXCELL® AND TRILADYL® EXTENDERS." Reproduction, Fertility and Development 25, no. 1 (2013): 233. http://dx.doi.org/10.1071/rdv25n1ab169.

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The Arabian tahr/ibex is a small species of goat-antelope-like animal, indigenous to the United Arab Emirates and with a larger population in Oman. Although the animal was discovered in 1894, its numbers continue to decline, and the animal has been classified on the IUCN red list as an endangered species. Little is known about the male reproduction, specifically, extending and cryopreserving semen. This provides a crucial tool for the ex situ conservation of this endangered species. The objective of this study was to evaluate sperm characteristics of the Arabian ibex after dilution in 2 commercial extenders, namely Bioxcell® and Triladyl® based on multiple qualitative parameters. Semen was collected using an electroejaculator from males (n = 4, ~4 years old) during the reproductive season (February–April). Ejaculates were divided into 2 aliquots and extended 1 : 2 in Bioxcell® or Trilidayl® at 37°C. Diluted semen was evaluated for motility with computer-assisted semen analysis (Sperm Vision®, Minitube, Verona, WI, USA). Morphologically, samples were examined with eosin and nigrosin stain under light microscopy, in addition to structural or ultrastructural evaluation with the use of scanning (SEM) or transmission (TEM) electron microscopy. Viability tests were carried out with a LIVE/DEAD® sperm viability kit (Invitrogen, Carlsbad, CA, USA); samples were examined using a fluorescent microscope (Olympus BX51) or with a flow cytometer (FACSAriaTM III, FACSDiva software, BD) with an average flow of 20 000 sperm/event. Sperm samples were liquefied (37°C/5 min), washed with 0.9% NaCl, centrifuged (2000 rpm for 3 min), and filtered using 40-µm nylon mesh (BD, USA) before FACS analysis. Our data showed that semen diluted with Triladyl® had higher motility compared with samples extended with Bioxcell® (60 v. 41%). While eosin and nigrosin staining showed very low morphological abnormalities with both extenders (less than 2%), SEM and TEM assessment demonstrated slightly high incidents of cracked tails, ruptured membrane, and broken midpeace with samples diluted with Bioxcell®. Viability test showed that samples extended with Triladyl® had higher percentages of live sperm (33%) compared with Bioxcell® (21%). Similar viability numbers were obtained with FACSAriaTM III. These results indicate that diluting Arabian ibex semen with Triladyl® would provide improved motility, morphology, and viability compared with Bioxcell®. These findings would be extremely useful for an ex situ conservation program of the Arabian tahr/ibex.

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Gorbāns, Imants, and Aleksejs Jurenoks. "Some Aspects of Good Practice for Safe Use of Wi-Fi, Based on Experiments and Standards." Applied Computer Systems 24, no. 2 (December 1, 2019): 161–65. http://dx.doi.org/10.2478/acss-2019-0020.

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Abstract The aim of the research is to study the effect of microwave Wi-Fi radiation on humans and plants. The paper investigates national standards for permissible exposure levels to microwave radiation, measures electric field intensity and justifies the point of view regarding the safe use of microwave technologies based on multiple plant cultivation experiments at different distances from a Wi-Fi router. The results demonstrate that the radiation of Wi-Fi routers significantly impairs the growth, development, yield and unexpected drought resistance of plants at short distances from the microwave source (up to 1 m to 2 m; –33 dBm to –43 dBm; >10 V/m). Slight effects are found up to about 4.5 m from a full-power home Wi-Fi router. As a result, suggestions are made for safe and balanced use of modern wireless technologies, which can complement occupational safety and health regulations.

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Harryman, Samuel W. H., Blake A. Grisham, Clint W. Boal, Samantha S. Kahl, Russell L. Martin, and Christian A. Hagen. "Multiscale Habitat Selection of Lesser Prairie-Chickens in a Row-Crop and Conservation Reserve Program Land Matrix." Journal of Fish and Wildlife Management 10, no. 1 (February 1, 2019): 126–36. http://dx.doi.org/10.3996/012018-jfwm-005.

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Abstract The lesser prairie-chicken Tympanuchus pallidicinctus has received considerable attention in recent years, as a result of population decline and the uncertainty of its status under the 1973 U.S. Endangered Species Act. Substantial effort has been exerted studying the life history of the species and effects of some management practices on its ecology. However, information is lacking regarding lesser prairie-chicken use and selection of Conservation Reserve Program fields in the Southern High Plains of Texas. To fill in this knowledge gap, we assessed habitat selection by lesser prairie-chickens within Conservation Reserve Program fields, native grassland, and row-crop agriculture in Texas, 2015–2017. We assessed habitat selection using a Type II design at the second order of selection (home range placement within the landscape) and a Type III design at the third order (Global Positioning System locations within the home range). At the second order of selection, lesser prairie-chickens selected Conservation Reserve Program fields seeded in nonnative grasses (wi = 3.99, 95% CI = 1.60–6.39) and native grasses and forbs (wi = 3.25, 95% CI = 1.99–4.52) year-round. Row-crop agriculture (wi = 0.17, 95% CI = 0.06–0.28) and native grassland (wi = 0.30, 95% CI = 0.06–0.55) were avoided. Native grass Conservation Reserve Program fields were used in proportion to their availability (wi = 1.33, 95% CI = 0.81–1.85) year-round. Only Conservation Reserve Program fields seeded in native grasses and forbs were selected at the third order of selection (wi = 1.32, 95% CI = 1.16–1.47). Based on our results, Conservation Reserve Program fields provide habitat for lesser prairie-chickens, and as such, may be beneficial to persistence of the species on the High Plains of Texas.

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Marjani, S. L., M. G. Carter, L.-Y. Sung, K. Inoue, S. Rodriguez-Zas, L. Wang, H. Yu, et al. "42 EFFECTS OF TRICHOSTATIN A TREATMENT ON GENE EXPRESSION OF CLONED MOUSE 2-CELL AND BLASTOCYST STAGE EMBRYOS." Reproduction, Fertility and Development 26, no. 1 (2014): 135. http://dx.doi.org/10.1071/rdv26n1ab42.

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Trichostatin A (TSA) is a potent inhibitor of histone deacetylases and has been shown to improve cloned embryo pre-implantation and term development. We examined the effects of TSA treatment on cloned mouse embryonic gene expression using microarrays. Cloned mouse embryos were generated using long-term haematopoietic stem cells (LT-HSC) and terminally differentiated granulocytes (Gr-1) as nuclear donors, which have been shown to have significantly different cloning efficiencies (Sung et al. 2006 Nat. Gen. 38, 1323–1328). Late 2-cell and blastocyst stage cloned embryos and control, BDF1 in vivo and IVF embryos (n = 10 from each embryo type and stage, except LT-HSC blastocysts, where n = 5) were snap frozen in liquid nitrogen. Total RNA was isolated from individual embryos and amplified using the TargetAmp 2 round Aminoallyl aRNA amplification kit (Epicentre Biotechnologies, Madison, WI, USA). Amplified RNA from each embryo and a standard reference was labelled with Cy3 or Cy5 and hybridized to the mouse exonic evidence based oligonucleotide (MEEBO) microarray allowing for the interrogation of ~25 000 genes. After Loess normalization, ANOVA with false discovery rate (P < 0.001) was used to identify differentially expressed (DE) genes. A subset of the DE genes was verified by RT-qPCR. These two cell types drastically differed in their potential to give rise to morula/blastocyst stage embryos: LT-HSC: 4.1% v. Gr-1: 38.9%. When treated with 10 nM TSA (Sigma, St. Louis, MO, USA) for 10 h immediately after activation, the morula/blastocyst rate increased to 66.1% for the LT-HSC cloned embryos and to 69.3% for the Gr-1 cloned embryos. At the 2-cell stage, we identified 2172 DE genes between the TSA-treated and untreated LT-HSC embryos. There were 512 DE genes between the Gr-1 and Gr-1 TSA embryos. Interestingly, the cloned embryos were more similar to the in vivo and IVF embryos after TSA treatment at the 2-cell stage, as evidenced by hierarchical clustering and the reduced number of DE genes: LT-HSC v. in vivo = 2622 genes; LT-HSC TSA v. in vivo = 473; Gr-1 v. in vivo = 1448; Gr-1 TSA v. in vivo = 312. By the blastocyst stage, the effect of TSA was considerably less pronounced with 18 and 17 DE genes between the LT-HSC/TSA and Gr-1/TSA embryos, respectively. These data indicate that TSA treatment normalizes 2-cell cloned embryo gene expression, enabling significantly more embryos to develop to the blastocyst stage. Our findings demonstrate that TSA exerted the greatest effect on the LT-HSC embryos, which were the most difficult to reprogram by SCNT.

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Anastasi, G., M. Conti, E. Gregori, and A. Passarella. "802.11 power-saving mode for mobile computing in Wi-Fi hotspots: Limitations, enhancements and open issues." Wireless Networks 14, no. 6 (January 17, 2007): 745–68. http://dx.doi.org/10.1007/s11276-006-0010-9.

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Perri, Enrico, Carlo Simonelli, Alessio Rossi, Athos Trecroci, Giampietro Alberti, and F. Marcello Iaia. "Relationship Between Wellness Index and Internal Training Load in Soccer: Application of a Machine Learning Model." International Journal of Sports Physiology and Performance 16, no. 5 (May 1, 2021): 695–703. http://dx.doi.org/10.1123/ijspp.2020-0093.

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Purpose: To investigate the relationship between the training load (TL = rate of perceived exertion × training time) and wellness index (WI) in soccer. Methods: The WI and TL data were recorded from 28 subelite players (age = 20.9 [2.4] y; height = 181.0 [5.8] cm; body mass = 72.0 [4.4] kg) throughout the 2017/2018 season. Predictive models were constructed using a supervised machine learning method that predicts the WI according to the planned TL. The validity of our predictive model was assessed by comparing the classification’s accuracy with the one computed from a baseline that randomly assigns a class to an example by respecting the distribution of classes (B1). Results: A higher TL was reported after the games and during match day (MD)-5 and MD-4, while a higher WI was recorded on the following days (MD-6, MD-4, and MD-3, respectively). A significant correlation was reported between daily TL (TLMDi) and WI measured the day after (WIMDi+1) (r = .72, P < .001). Additionally, a similar weekly pattern seems to be repeating itself throughout the season in both TL and WI. Nevertheless, the higher accuracy of ordinal regression (39% [2%]) compared with the results obtained by baseline B1 (21% [1%]) demonstrated that the machine learning approach used in this study can predict the WI according to the TL performed the day before (MD<i). Conclusion: The machine learning technique can be used to predict the WI based on a targeted weekly TL. Such an approach may contribute to enhancing the training-induced adaptations, maximizing the players’ readiness and reducing the potential drops in performance associated with poor wellness scores.

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Lassabe, F., P. Canalda, P. Chatonnay, and F. Spies. "Indoor Wi-Fi positioning: techniques and systems." annals of telecommunications - annales des télécommunications 64, no. 9-10 (July 22, 2009): 651–64. http://dx.doi.org/10.1007/s12243-009-0122-1.

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Frank, Ulrich. "WI – Mitteilungen des Fachbereichs Wirtschaftsinformatik der GI." WIRTSCHAFTSINFORMATIK 50, no. 2 (April 2008): 154. http://dx.doi.org/10.1365/s11576-008-0035-z.

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Bub, Udo, Helmut Krcmar, and Arnold Picot. "WI – Call for Papers Heft 5/2011." WIRTSCHAFTSINFORMATIK 52, no. 1 (January 21, 2010): 55–56. http://dx.doi.org/10.1007/s11576-009-0203-9.

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Müller, Günter, Noboru Sonehara, Isao Echizen, and Sven Wohlgemuth. "WI – Call for Papers Heft 3/2011." WIRTSCHAFTSINFORMATIK 52, no. 1 (January 19, 2010): 53–54. http://dx.doi.org/10.1007/s11576-009-0205-7.

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Pujolle, Guy, Hakima Chaouchi, and Dominique Gaïti. "A global architecture for the Wi-family." Telecommunication Systems 31, no. 2-3 (March 2006): 163–73. http://dx.doi.org/10.1007/s11235-006-6518-6.

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Diaconu, E. M. "Electrical Device Control System Through Wi-Fi Technology." Scientific Bulletin of Electrical Engineering Faculty 21, no. 1 (April 1, 2021): 18–21. http://dx.doi.org/10.2478/sbeef-2021-0004.

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Abstract The study aims for the development of a system that allows the management and control of an electrical device, this paper is an introduction to the world of smart home / IoT and transforms non-smart equipment offering the user greater control and customizable options just by connecting the desired device to the control system. The system consists of a control board that operates two relays, the relays have the main function of opening and closing the electrical circuit. The control board consists of an AMS1117 3.3V voltage lowering module, ESP8266 microcontroller and connectors for power supply and relay control. For the software part, the IDE programming language for the Arduino microcontroller was used, being an easy to use/understand and very versatile programming language.

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Kumara, B., S. Jinap, Y. B. Che Man, and M. S. A. Yusoff. "Note: Comparison of Colour Techniques to Measure Chocolate Fat Bloom." Food Science and Technology International 9, no. 4 (August 2003): 295–99. http://dx.doi.org/10.1177/108201303036045.

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A combination of digital camera, computer and graphic software can provide a less expensive and more versatile technique to determine the changes of colour on chocolate's surface in fat bloom assessment compared to instrumental colour measurement. Both techniques were applied and compared to measure the colour profiles at various locations on the surface of bloomed chocolates. Pearson correlation coefficients and sample paired t-test on whiteness index (WI) and L*a*b* values were calculated. The value of WI of chocolate samples from instrumental technique was in the range of 35.8-44.3 with a coefficient of variance (CV) ranging from 0.0 to 0.9%. Meanwhile, digital image technique gave a WI value ranging from 35.1 to 45.1 with a CV from 0.1 to 14.2%, respectively. A highly significant correlation was found for the means of WI (R21/4 0.821) and L* (R2 1/4 0.788) values between instrumental and digital image technique. b* value of digital image also had significant correlation with the instrumental data (R21/4 0.756). However, there were significantly different measurements in the values obtained (p<0.001) by both techniques. Thus, b* as well as a* values could not be used as a colour indicator in this study. The results suggested that though the digital image provided good measurement of WI and L*, the colour measurements of digital image were less precise as compared to the instrumental technique, therefore results from the digital image should be interpreted with caution.

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Xu, Jiahui, Honggui Li, Ying Lv, Chang Zhang, Yiting Chen, and Dezhao Yu. "Silencing XIST mitigated lipopolysaccharide (LPS)-induced inflammatory injury in human lung fibroblast WI-38 cells through modulating miR-30b-5p/CCL16 axis and TLR4/NF-κB signaling pathway." Open Life Sciences 16, no. 1 (January 1, 2021): 108–27. http://dx.doi.org/10.1515/biol-2021-0005.

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Abstract Background Emerging evidence shows that long noncoding RNA (lncRNA) has been a novel insight in various diseases, including pneumonia. Even though lncRNA X-inactive-specific transcript (XIST) is well studied, its role in pneumonia remains to be largely unrevealed. Methods Expression of XIST, miRNA-30b-5p (miR-30b-5p), and CC chemokine ligand 16 (CCL16) was detected using reverse transcriptase quantitative polymerase chain reaction and western blotting; their interaction was confirmed by dual-luciferase reporter assay. Apoptosis, inflammation, and toll-like receptor 4 (TLR4)/NF-κB signaling pathway were measured using methyl thiazolyl tetrazolium assay, flow cytometry, western blotting, and enzyme-linked immunosorbent assay. Results Lipopolysaccharide (LPS) stimulation decreased cell viability and B cell lymphoma (Bcl)-2 expression, and increased cell apoptosis rate and expression of Bcl-2-associated X protein (Bax), cleaved-caspase-3, interleukin (IL)-6, IL-1β, and tumor necrosis factor α (TNF-α) in WI-38 cells. Expression of XIST and CCL16 was upregulated in the serum of patients with pneumonia and LPS-induced WI-38 cells, respectively; silencing XIST and CCL16 could suppress LPS-induced apoptosis and inflammation in WI-38 cells, and this protection was abolished by miR-30b-5p downregulation. Moreover, XIST and CCL16 could physically bind to miR-30b-5p, and XIST regulated CCL16 expression via sponging miR-30b-5p. TLR4 and phosphorylated P65 (p-P65) and p-IκB-α were highly induced by LPS treatment, and this upregulation was diminished by blocking XIST, accompanied with CCL16 downregulation and miR-30b-5p upregulation. Conclusions Silencing XIST could alleviate LPS-induced inflammatory injury in human lung fibroblast WI-38 cells through modulating miR-30b-5p/CCL16 axis and inhibiting TLR4/NF-κB signaling pathway.

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Youngblood, R. C., S. T. Willard, P. L. Ryan, and J. M. Feugang. "149 DEVELOPMENT OF AN IN VITRO BIOLUMINESCENT SPERM BINDING ASSAY: PRELIMINARY DATA." Reproduction, Fertility and Development 26, no. 1 (2014): 188. http://dx.doi.org/10.1071/rdv26n1ab149.

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Quantum dot technology has enabled researchers to incorporate the intrinsic properties of such nanoparticles into physiological exploration. Previous work from our laboratory has demonstrated that quantum dots can be incorporated into spermatozoa without deleterious effects to physiological parameters such as motility, viability, and fertilizing potential (Feugang et al. 2012). However, the journey of spermatozoa within the female reproductive tract is met with many physicochemical obstacles and checkpoints that include the binding of spermatozoa to utero-oviducal epithelial cells. Moreover, the binding ability/affinity of quantum dot-labelled spermatozoa has not been tested and therefore, the objective of this study is to test the binding semblance of quantum dot-labelled spermatozoa to uterine epithelial cells compared to normal sperm, and the subsequent use of the technology to develop a bioluminescent sperm binding assay. Porcine uterine epithelial (PUE) cells were seeded into 96-well clear-bottomed plates (20 000 cells/well) and allowed to grow to 95% confluency. Motile spermatozoa were selected from fresh pooled semen of fertile boars and labelled with quantum dot nanoparticles to form quantum sperm, as previously described (Feugang et al. 2012). Final concentrations of 107 labelled (QD+) and non-labelled (QD–) spermatozoa were added to monolayers of PUE cells and co-incubated in PBS/polyvinylpyrrolidone (PVP) at 37°C, 5% CO2. The control consisted of PUE cells alone in the PBS/PVP medium. Each treatment was performed in triplicate and experiments were repeated 3 times. After 1 h of co-incubation, the supernatant from each well was transferred to the adjacent three wells. The co-incubated wells containing expected PUE-sperm binding were then washed 3 times with PBS/PVP to eliminate any unbound sperm. PUE-quantum sperm (QD+) and PUE-non-labelled sperm (QD–) complexes were verified using bright field microscopy, followed by measurement of photonic emission from each well (GloMax Multi Detection System, Promega, Madison, WI, USA). Data was analysed by ANOVA with the threshold of significance fixed at P < 0.05. There were no visual differences in binding patterns between QD+ and QD–, which appeared similar under the microscope. However, the photonic signals (relative luminescent units; RLU) from QD+ wells were significantly higher than both the control and QD– wells (2534.84 ± 639.91 v. 542.46 ± 639.91 and 806.48 ± 639.91 RLU; P < 0.05). Supernatants collected from the QD+ wells, representing unbound quantum sperm, had the highest photonic emissions when compared to all other wells, with or without spermatozoa (19 948.23 ± 639.91 RLU; P < 0.05). Results demonstrate that quantum dot nanoparticles can be incorporated into boar spermatozoa without affecting their binding affinity to uterine epithelial cells, and their subsequent use in a biophotonic sperm binding assay. Further optimization and experimentations are ongoing to establish whether bioluminescent quantum sperm could serve to develop sensitive in vitro binding assays to better characterise sperm viability. Support was provided by U.S. Department of Agriculture Agricultural Research Service (USDA-ARS) grant number 58-6402-3-0120

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Nurbayatin, Anita, Widjiati Widjiati, Relly Yanuari Primariawan, Bambang Poernomo, Sulistiawati Sulistiawati, and Rina Yudiwati. "RADIATION EFFECT OF WIRELESS FIDELITY (Wi-Fi) ON OOCYTE NUMBER OF OOCYTE STIMULATION IN MICE (Mus Musculus)." Folia Medica Indonesiana 53, no. 3 (November 4, 2017): 169. http://dx.doi.org/10.20473/fmi.v53i3.6440.

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Infertility is a problem experienced by some women and men around the world. Most infertility problems in women is caused by impaired reproductive organs or disrupted ovulation.. One factor that causes impaired oocyte maturation is wireless fidelity (Wi-Fi) radiation which has a radio frequency field of 2.45 GHz. The radiation may increase the activity of free radical cells through the fenton reaction pathways that cause infertility because of the disrupted oocyte development. This study aimed to determine the effect of Wi-Fi radiation on the number of oocytes. This was an experimental study using control group design. The subjects were 32 female mice selected through complete random sampling and divided into two groups: control (R0) and exposure (R1). Each group consisted of 16 mice. The Wi-Fi radio frequency used was 2.5 GHz. Mice (R1) were placed closer to Wi-Fi source (± 15cm), and there were two types of laptop PCs and 3G mobile phones connected to internet placed next to mice for 15 hours/28 days. The mice underwent a simultaneous cycle with intraperitoneal injection of PMSG and HCG. Furthermore, the mice were mated with vasectomized male monomatingly to induce ovulation. The fertilization pouch in both oviducts were observed for oocyte collection. The number of oocytes was calculated using an inverted microscope. There was a difference in the number of oocytes between control and exposure group. Statistical tests were analyzed using Mann Whitney U and resulted in significant values (p value = 0.00). No oocytes count in exposure group. In other words, the group underwent anovulation. In conclusion, Wi-Fi radiation affected the number of oocyte stimulation in mice. Therefore, it was important to minimize the risk factors that trigger electromagnetic radiation on reproductive health.

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Jeong, Yeonsik, Sandeep Kakumanu, Cheng-Lin Tsao, and Raghupathy Sivakumar. "VoIP over Wi-Fi Networks: Performance Analysis and Acceleration Algorithms." Mobile Networks and Applications 14, no. 4 (February 10, 2009): 523–38. http://dx.doi.org/10.1007/s11036-009-0157-6.

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Kalniņš, Rūdolfs, Jānis Puriņš, and Gundars Alksnis. "Security Evaluation of Wireless Network Access Points." Applied Computer Systems 21, no. 1 (May 24, 2017): 38–45. http://dx.doi.org/10.1515/acss-2017-0005.

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Abstract The paper focuses on the real-world usage of IEEE 802.11 wireless network encryption and Wi-Fi Protected Setup (WPS) function. A brief history on the development of encryption methods and WPS is given. Wireless scanning of 802.11 networks in a capital city has been performed, and the results of it have been analysed. To ascertain the knowledge about the security of wireless networks of the average user, an online survey has been conducted. To test the security of encryption methods and WPS function, practical attacks against private test wireless networks have been made. The authors conclude that the safest way to set up 802.11 network with a pre-shared key is to use Wi-Fi Protected Access 2 (WPA2) encryption without support for WPS function. Statistics in Riga shows that networks are often configured otherwise and thus vulnerable to attacks. Survey results prove that respondents are not well informed regarding the security of wireless networks.

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Shim, Dongha, and Jason Yi. "Ultra-wide-angle Wireless Endoscope with a Backend-camera-controller Architecture." International Journal of Electronics and Telecommunications 63, no. 1 (March 1, 2017): 19–24. http://dx.doi.org/10.1515/eletel-2017-0003.

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Abstract This paper presents a wireless endoscope with an ultra-wide FOV (Field of View) of 130° and HD resolution (1280×720 pixels). The proposed endoscope consists of a camera head, cable, camera controller, and wireless handle. The lens module with a 150° degrees AOV (Angle of View) is achieved using the plastic injection-molding process to reduce manufacturing costs. A serial CMOS image sensor using the MIPI (Mobile Industry Processor Interface) CSI-2 (Camera Serial Interface-2) interface physically separates the camera processor from the camera head. The camera head and the cable have a compact structure due to the BCC (Backend-Camera-Controller) architecture. The size of the camera head and the camera controller is 8×8×26 mm and 7×55 mm, respectively. The wireless handle supports a UWB (Ultra-Wide-Band) or a Wi-Fi communication to transmit video data. The UWB link supports a maximum data transfer rate of ~37 Mbps to transmit video data with a resolution of 1280×720 pixels at a frame rate of 30 fps in the MJPEG (Motion JPEG) format. Although the Wi-Fi link provides a lower data transfer rate (~8 Mbps Max.), it has the advantage of flexible interoperability with various mobile devices. The latency of the UWB link is measured to be ~0.1 sec. The Wi-Fi link has a larger latency (~0.5 sec) due to its lower data transfer rate. The proposed endoscope demonstrates the feasibility of a high-performance yet low-cost wireless endoscope using the BCC architecture. To the best of the author’s knowledge, the proposed endoscope has the largest FOV among all presently existing wireless endoscopes.

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Gallagher, Nicola E., Chris C. Patterson, Charlotte E. Neville, John Yarnell, Yoav Ben-Shlomo, Anne Fehily, John E. Gallacher, Natalie Lyner, and Jayne V. Woodside. "Dietary patterns and hearing loss in older men enrolled in the Caerphilly Study." British Journal of Nutrition 121, no. 8 (January 23, 2019): 877–86. http://dx.doi.org/10.1017/s0007114519000175.

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AbstractThe association between dietary patterns (DP) and prevalence of hearing loss in men enrolled in the Caerphilly Prospective Study was investigated. During 1979–1983, the study recruited 2512 men aged 45–59 years. At baseline, dietary data were collected using a semi-quantitative FFQ, and a 7-d weighed food intake (WI) in a 30 % subsample. Five years later, pure-tone unaided audiometric threshold was assessed at 0·5, 1, 2 and 4 kHz. Principal component analysis (PCA) identified three DP and multiple logistic and ordinal logistic regression models examined the association with hearing loss (defined as pure-tone average of frequencies 0·5, 1, 2 and 4 kHz >25 dB). Traditional, healthy and high-sugar/low-alcohol DP were found with both FFQ and WI data. With the FFQ data, fully adjusted models demonstrated significant inverse association between the healthy DP and hearing loss both as a dichotomous variable (OR=0·83; 95 % CI 0·77, 0·90; P<0·001) and as an ordinal variable (OR=0·87; 95 % CI 0·81, 0·94; P<0·001). With the WI data, fully adjusted models showed a significant and inverse association between the healthy DP and hearing loss (OR=0·85; 95 % CI 0·73, 0·99; P<0·03), and a significant association between the traditional DP (per fifth increase) and hearing loss both as a dichotomous variable (OR=1·18; 95 % CI 1·02, 1·35; P=0·02) and as an ordinal variable (OR=1·17; 95 % CI 1·03, 1·33; P=0·02). A healthy DP was significantly and inversely associated with hearing loss in older men. The role of diet in age-related hearing loss warrants further investigation.

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Ko, Y. F., M. L. Sim, and M. Nekovee. "Wi-Fi based broadband wireless access for users on the road." BT Technology Journal 24, no. 2 (April 2006): 123–29. http://dx.doi.org/10.1007/s10550-006-0049-2.

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Podolskaya, N. A., and F. N. Sherstyuk. "The problem of Wi-Fi radio-fading simulation: Solution and applications." Journal of Mathematical Sciences 152, no. 4 (July 2008): 571–77. http://dx.doi.org/10.1007/s10958-008-9079-2.

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Nakae, Ryuta, Masaya Nagaishi, Yosuke Kawamura, Yoshihiro Tanaka, Akio Hyodo, and Kensuke Suzuki. "Microhemorrhagic transformation of ischemic lesions on T2*-weighted magnetic resonance imaging after Pipeline embolization device treatment." Journal of Neurosurgery 130, no. 6 (June 2019): 1997–2004. http://dx.doi.org/10.3171/2017.12.jns172480.

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OBJECTIVEThe authors sought to demonstrate that hemorrhagic transformation of ischemic lesions is the main cause of delayed intracerebral hemorrhage (ICH) after Pipeline embolization device (PED) treatment and to estimate the rate of hemorrhagic transformation of new postprocedure ischemic lesions.METHODSPatients who underwent PED placement (PED group) from November 2015 to March 2017 or stent-mediated embolization (EN group) from December 2010 to October 2015 were retrospectively analyzed. Pre- and postprocedural MR images and 6-month follow-up MR images for each patient were scored for the presence of postprocedural bland ischemic and hemorrhagic lesions using diffusion-weighted MRI (DWI) and T2*-weighted MRI (T2*WI), respectively.RESULTSThe PED group comprised 28 patients with 30 intracranial aneurysms, and the EN group comprised 24 patients with 27 intracranial aneurysms. The mean number of ischemic lesions on DWI 1 day postprocedure was higher in the PED group than in the EN group (5.2 vs 2.7, p = 0.0010). The mean number of microbleeds detected on T2*WI 6 months postprocedure was higher in the PED group than in the EN group (0.6 vs 0.15, p = 0.028). A total of 36.7% of PED-treated patients exhibited new microbleeds on T2*WI at 6 months postprocedure, with at least 77.8% of these lesions representing hemorrhagic transformations of the new ischemic lesions observed on day 1 postprocedure. The rate of adjunctive coil embolization (27.3% vs 0.0%, p = 0.016) and the mean number of ischemic lesions observed 1 day postprocedure (6.6 vs 4.3, p = 0.020) were predictors of subsequent microbleeds in the PED group.CONCLUSIONSNew microbleeds detected using T2*WI at 6 months postprocedure were more common after PED treatment than after stent-mediated embolization. Approximately three-quarters of these lesions were hemorrhagic transformations of new ischemic lesions observed on day 1 postprocedure. Prevention of intraprocedural or postprocedural infarcts is necessary to reduce the risk of hemorrhagic complications following PED placement.

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Singh, Rajesh, Anita Gehlot, and Mrinal Kaushik. "Dynamic Modeling and Decision System for Smart Bin in Cities for Waste Management." International Journal of Intelligent Communication, Computing and Networks 1, no. 1 (August 25, 2020): 01–09. http://dx.doi.org/10.51735/ijiccn/001/06.

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The accumulation of waste in one place for much time makes it rotten and which leads to the attraction of flies and rodents, which can harbor many of health hazardous conditions? Likewise, some have the cure as burning waste, and this is worst planned for getting rid of this problem of waste as this further it pollutes air so as living being to as we inhale it. To avoid such disastrous situations, we are going to make these smart bins named as "IoT enabled Devices for Waste Management'. These dustbins are interfaced with IOT system with MSP-EXP430G2 Launchpad using Wi-Fi and GPRS modem. Hence, the state will be updated on to the HTML page along with it we have an App it will be making this system to be user handy for everyone. The heart of this system is a Wi-Fi module and GPRS modem; essential for its real-time data updates for picking up the team to function fluently. The main aim of this project is to protect the environment, peoples as well as the proper management of resource by adequate waste management devices.

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Barnett, John. "IAWA, IAWS and IUFRO Conference 23–26 June 2010, Madison, WI, USA." Wood Science and Technology 44, no. 1 (January 3, 2010): 1. http://dx.doi.org/10.1007/s00226-009-0301-2.

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Liu, Haining, and Magda El Zarki. "Adaptive Delay and Synchronization Control for Wi-Fi Based Mobile AV Conferencing." Wireless Personal Communications 34, no. 1-2 (July 2005): 143–62. http://dx.doi.org/10.1007/s11277-005-8731-0.

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Cuzanauskas, Tomas, and Aurimas Anskaitis. "TCP Performance in Multi-Polling Game Theory-Based IEEE 802.11 Networks." Electrical, Control and Communication Engineering 11, no. 1 (December 1, 2016): 33–40. http://dx.doi.org/10.1515/ecce-2016-0010.

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Abstract Easy usage and integration with various applications made IEEE 802.11 one of the most used technologies these days, both at home and business premises. Over the years, there have been many additional improvements to the 802.11 standards. Nevertheless, the algorithms and Media Access Control (MAC) layer methods are almost the same as in previous Wi-Fi versions. In this paper, a set of methods to improve the total system capacity is proposed – such as efficient transmit power management based on Game Theory with a custom wireless medium protocol. The transmit power management and wireless medium protocol is verified by both simulation and real application scenarios. The results conclude that the capacity of the proposed wireless medium protocol is overall 20 percent higher than the standard 802.11 wireless medium access protocols. Additional TCP Acknowledgment filtering, which was tested together with the proposed wireless medium access protocol, can provide up to 10-percent-higher TCP throughput in high-density scenarios, especially for asymmetrical traffic cases. The conducted research suggests that efficient power management could result in lighter transmit power allocation rules that are currently set by the local regulators for current Wi-Fi devices. Thus, better propagation characteristics and wireless medium management would lead to an overall higher wireless system capacity.

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Kharat, Santosh Abaji, Bhausaheb M. Panage, and Shubhada Nagarkar. "Use of QR code and Layar app for academic library services." Library Hi Tech News 34, no. 3 (May 2, 2017): 21–28. http://dx.doi.org/10.1108/lhtn-12-2016-0060.

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Purpose This study completed action research in the library. The purpose of this study is to increase awareness of the QR code and the Augmented Reality Application (ARA) among library users. Design/methodology/approach This is a technical review. Findings The researchers arranged tables in the library called “Scan Me” tables, and arranged academic books, journals and magazines with the QR code and the Layar material on a “scan me table”. The researchers designed one video using movie maker and other supporting software to provide guidelines on how to use the scan me table in the library. The researchers have shared this video among selected MBA libraries that have Wi-Fi and library software members. Originality/value This research also incorporates how to prepare virtual data and how they are linked with real data, how to give training to library staff to solve users’ queries and how to help them at the time of downloading the application or scanning material. Creating a better platform for this research required support from a library software design team as well as in-house technical or IT support staff for good maintenance of the library server, Wi-Fi equipment and so forth.

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Puel, Gilles, Valérie Fernandez, and Valérie Fautrero. "Alternative technologies for rural areas–what about the ‘alternative’ dimension of Wi-Fi?" GeoJournal 68, no. 1 (May 16, 2007): 41–53. http://dx.doi.org/10.1007/s10708-007-9052-5.

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Zàruba, G. V., M. Huber, F. A. Kamangar, and I. Chlamtac. "Indoor location tracking using RSSI readings from a single Wi-Fi access point." Wireless Networks 13, no. 2 (June 8, 2006): 221–35. http://dx.doi.org/10.1007/s11276-006-5064-1.

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Bonthu, Bhulakshmi, and M. Subaji. "An effective algorithm to overcome the practical hindrance for Wi-Fi based indoor positioning system." Open Computer Science 10, no. 1 (June 24, 2020): 117–23. http://dx.doi.org/10.1515/comp-2020-0010.

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AbstractIndoor tracking has evolved with various methods. The most popular method is using signal strength measuring techniques like triangulation, trilateration and fingerprinting, etc. Generally, these methods use the internal sensors of the smartphone. All these techniques require an adequate number of access point signals. The estimated positioning accuracy depends on the number of signals received at any point and precision of its signal (Wi-Fi radio waves) strength. In a practical environment, the received signal strength indicator (RSSI) of the access point is hindered by obstacles or blocks in the direct path or Line of sight. Such access points become an anomaly in the calculation of position. By detecting the anomaly access points and neglecting it during the computation of an indoor position will improve the accuracy of the positioning system. The proposed method, Practical Hindrance Avoidance in an Indoor Positioning System (PHA-IPS), eliminate the anomaly nodes while estimating the position, so then enhances the accuracy.

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Liu, Haining, and Magda El Zarki. "An adaptive delay and synchronization control scheme for Wi-Fi based audio/video conferencing." Wireless Networks 12, no. 4 (May 8, 2006): 511–22. http://dx.doi.org/10.1007/s11276-006-6549-7.

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