Leveraging 3D Benefits for Authentication

Authors: Jonathan Gurary, Ye Zhu, Huirong Fu

ABSTRACT
Devices with 3D capabilities are quickly gaining in popularity. In this paper, we propose to bring authentication into the third dimension. We define the concept of a 3D authentication scheme based on physical and psychological advantages of 3D. We implement an example of 3D authentication: 3DPass, to demonstrate the superiority of the 3D approach. Our security analysis of 3DPass demonstrates that 3DPass can exceed the password space of an 8 character alphanumeric password with just 6 choices. Our user study finds that 3DPass has superior memorability versus traditional alphanumeric passwords: 98% vs 83% recall rates after one week. We find that passwords in our scheme can be entered in 21 seconds on average when used with the Oculus Rift. We find that using the Oculus Rift improves entry time compared to a traditional 2D display, despite having no impact on presence (the feeling of “being there”) or user preference.

Source:

Journal: International Journal of Communications, Network and System Sciences
DOI: 10.4236/ijcns.2017.108B035 (PDF)
Paper Id: 78889 (metadata)

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The SMW Formula for Bounded Homogeneous Generalized Inverses with Applications

Author: Jianbing Cao

ABSTRACT
In this paper, we present an extension of the so-called classical Sherman-Morrison-Woodbury (for short SMW) formula for bounded homogeneous generalized inverse in Banach spaces. Some particular cases and applications will be also considered. Our results generalize the results of many authors for finite dimensional matrices and Hilbert space operators in the literature.

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Journal: Journal of Applied Mathematics and Physics
DOI: 10.4236/jamp.2017.59132 (PDF)
Paper Id: 78864 (metadata)

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Synthesis and Crystal Structure of N-(2-Pyridylmethyl)-L-Alanine) Isothiocyanate Cobalt(III)

Authors: Sally-Judith E. Ntum, Awawou G Paboudam, Asseng M. Conde,
Linda D. Nyamen, Aminou Mohamadou, James Raftery, Peter T. Ndifon

ABSTRACT
The title compound, [N-(2-pyridylmethyl)-(L)-alanine]Co(III) thiocyanate (1) was obtained from the reaction of Co(OOCH3)2·H2O with the tridentate reduced Schiff base ligand, N-(2-pyridylmethyl)-(L)-alanine (L) and NH4SCN and characterized by elemental analysis, IR, UV-visible, TGA and single-crystal X-ray diffraction. Structural and spectroscopic analyses reveal [Co(L)2)]SCN to be monomeric with Cobalt(III) adopting a pseudo-octahedral geometry, coordinating to two reduce Schiff base ligands. In the crystal lattice, the thiocyanate anion forms an intermolecular SCN···HNamine hydrogen bond, while adjacent monomers are linked by intermolecular Ocarboxyl···HNamine···H-bonds to form a supramolecular network. This work is therefore undertaken in an attempt to construct coordination framework structures of varying properties using the mixed-ligand strategy involving reduced Schiff bases and the thiocyanate ion.

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Journal: Crystal Structure Theory and Applications
DOI: 10.4236/csta.2017.63004 (PDF)
Paper Id: 78830 (metadata)

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Physical and Psychological Effects of the Shiatsu Stimulation in the Sitting Position

Authors: Shinpei Oki, Koichi Ouchi, Mayumi Watanabe, Nozomu Mandai

ABSTRACT
Purpose: In this study, we investigated physical and psychological effects of the shiatsu (finger pressure) stimulation in a sitting position. Subjects and Methods: A crossover test was conducted on 20 subjects (average 34.5 ± 7.6 years old; male = 10, female = 10). First they were randomly divided into two groups: Group A (shiatsu stimulation/control) and group B (control/shiatsu stimulation). They had shiatsu stimulation (Namikoshi basic methods in the sitting position, five minutes). At the same time, POMS (profile of mood states), SBP (systolic blood pressure, DBP (diastolic blood pressure) and HR (heart rate) were measured. Results: Physical result—Compared to the baseline, the shiatsu stimulation showed statistical decreased SBP and HR while the control (no shiatsu stimulation) did not. Psychological result (POMS)— Compared to the baseline, the stimulation showed significant change in all six mood states (Tension-Anxiety, Depression-Dejection, Fatigue and Confusion decreased while Vigor elevated). Male showed statistical decrease in Tension-Anxiety, Depression-Dejection, Anger, Fatigue and Confusion as well as significant increase in Vigor. Female only showed decrease in Depression-Dejection and Anger. Discussion and Conclusion: The shiatsu stimulation in the sitting position could modulate autonomic nerve system and it could affect human body. Gender differences were found in physiological effect.

Source:

Journal: Health
DOI: 10.4236/health.2017.98091 (PDF)
Paper Id: 78785 (metadata)

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Determination of Customer Satisfaction in Conservative Concept Hotels by Ordinal Logistic Regression Analysis

Authors: Hakan Eygu, Ali Caglar Gulluce

ABSTRACT
The purpose of this study was to determine the satisfaction level and the expectations of the conservative hotel customers during their stay. For this purpose, a survey was conducted for customers who prefer to stay in conservative hotel facilities. Ordinal logistic regression analysis was conducted using a statistical package program on the data obtained with the help of questionnaires. 430 customers who were staying in conservative hotels were asked to answer 41 questions in the survey. As a result of the research, demographic characteristics of conservative hotel customers were found to be statistically significant between the dependent variable and their status of education levels, occupation status, monthly income, nationality, duration of hotel stay, previous hotel stay, and the desire to stay again in the same hotel. This is a unique study to determine as to whether the characteristics of conservative hotel customers in hotel facilities differ according to the individual and socio-cultural characteristics of customers, since the customer expectancy changes according to the period and conditions of the time of operation and to compare the current situation with the expectations of the customers.

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Journal: Journal of Financial Risk Management
DOI: 10.4236/jfrm.2017.63020 (PDF)
Paper Id: 78760 (metadata)

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Hashimoto’s Thyroiditis and Encephalopathy

Author: David S. Younger

ABSTRACT
Although very rare, the literature describes cases of Hashimoto encephalopathy attesting to its occurrence. Affected patients present with seizures, stroke-like episodes, transient focal and global neurological deficits, and a variety of neuropsychiatric disturbance from dementia to hallucinations and psychosis. The encephalopathy evolves with concomitantly elevated anti-thyroid peroxidase antibodies, independent from hormonal thyroid function setting it apart from thyrotoxicosis and myxedema. A new patient reported with Hashimoto’s encephalopathy, in whom neurocognitive impairment and stroke-like onset of hemiparesis and hemiparkinsonism correlated with brain magnetic resonance imaging fused with positron emission tomography.

Source:

Journal: World Journal of Neuroscience
DOI: 10.4236/wjns.2017.73026 (PDF)
Paper Id: 78768 (metadata)

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An Empirical Study of the Chinese Marriage Market: “Leftover” or Not?

Authors: Qingqing Peng, Lei Li

ABSTRACT
Using census data from 1990 to 2010, this paper describes the trend of the Chinese marriage market focusing on “leftover men” and “leftover women”. In general, it was identified that there was an increasing share of being single for young and more educated population. The share of single population for less educated men after age 35 was higher than other age groups across the years, providing consistent evidence for leftover men. Meanwhile, more educated women showed no clear difference in marriage rate than others in their late 30s. This study further found that increasing comparative supply of men and more educated women due to demographic change and education reform explains the phenomena observed. In addition, women who get married later were found to have husbands showing disadvantages in age and education level, while men displayed no similar pattern, suggesting that Chinese women might lower their selecting standard as their age increases.

Source:

Journal: Open Journal of Social Sciences
DOI: 10.4236/jss.2017.58019 (PDF)
Paper Id: 78709 (metadata)

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Iron (III) Chloride Catalyzed Claisen Rearrangement Reaction of Allyloxyarenes under Microwave Conditions

Authors: Indah Nur Pramesti, Yutaka Okada

ABSTRACT
The Claisen rearrangement is a [3,3]-sigmatropic rearrangement which is an important method for new C-C bond formation in organic synthesis. This reaction is a typical thermal reaction that requires a high temperature and long reaction time. In this paper, the acceleration effects of the iron (III) chloride (FeCl3) catalyst and microwave irradiation during the Claisen rearrangement reaction of allyloxyarene derivatives are reported. The FeCl3 catalyst was able to initiate the reaction at low temperature and induced the subsequent cyclization reaction. The moderation of excellent yields was obtained in a short reaction time. The formation of complex ferric-arenes under microwave irradiation conditions to efficiently absorb the microwaves was expected and confirmed.

Source:

Journal: Green and Sustainable Chemistry
DOI: 10.4236/gsc.2017.73018 (PDF)
Paper Id: 78716 (metadata)

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Porous Structure of Municipal Solid Waste Incineration Bottom Ash in Initial Stage of Landfill

Authors: Shogo Sakita, Jun Nishimoto, Kazuyuki Nishimura

Source:

For quantitative estimation of the intra-layer porous structure in the initial stage of landfill formation with municipal solid waste incineration (MSWI) bottom ash, the water absorption of individual MSWI bottom ash particles was measured under still-water, degassed, and agitated conditions. The ratio of the water absorption rate found for the still-water procedure to the effective absorption capacity which was the one under degassing was 35.2%. In the water flow experiment of a column filled with MSWI bottom ash, the true density of the bottom ash was higher after water flow than before, which indicated that dissolution of the soluble components of the bottom ash particle surfaces resulted in a loss of apparent particle volume that more than offset the accompanying weight loss. The volume-based water absorption rate found for the bottom ash particles following 50 mL/h water flow through the column, as a ratio to the effective absorption capacity was about 51.8% of the effective absorption capacity. In a landfill layer comprised of MSWI bottom ash, it was suggested that some regions of the ash particle interiors underwent almost no contact with water.

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Journal: Journal of Geoscience and Environment Protection
DOI: 10.4236/gep.2017.59002 (PDF)
Paper Id: 78637 (metadata)

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Effect of Alteration of Glutathione Content on Cell Viability in α-Synuclein-Transfected SH-SY5Y Cells

Authors: Ken-Ichi Tanaka, Kanako Sonoda, Masato Asanuma

ABSTRACT
It is well known that α-synuclein (αS) plays an important role in the pathogenesis of Parkinson’s disease (PD). Moreover, oxidative stress is also thought to be an important factor in PD due to induction of dopaminergic neuronal cell death by free radicals and enhancement of αS fibrillation by oxidized stress. In the present study, to clarify the role of glutathione (GSH), an intracellular antioxidant, on the molecular mechanism of αS-induced cell injury, we examined the effects of L-buthionine-SR-sulfoximine (BSO), a GSH synthase inhibitor, with or without N-acetyl-L-cysteine (NAC), a source of GSH, on αS-induced cell injury in human neuroblastoma SH-SY5Y cells. Treatment with BSO significantly reduced the cell viability of both empty-vector- and αS-transfected SH-SY5Y cells in a dose-dependent manner (p < 0.01), although the ratio of αS-induced reduction of cell viability in α-syn-transfected cells was much greater than that in empty-vector-transfected cells. Moreover, BSO significantly reduced the intracellular total GSH level in both types of transformant cells. However, NAC significantly prevented BSO-induced reduction of both cell viability and GSH level in the αS-transfected cells. These findings suggest that GSH plays an important role in αS-induced cell injury by reducing cell viability.

Source:

Journal: Advances in Parkinson’s Disease
DOI: 10.4236/apd.2017.63010 (PDF)
Paper Id: 78635 (metadata)

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