Miracle-dz/UniFAR-FTUs huggingface dataset:
Cloud Multidomain Access Control Model Based on Role and Trust-Degree

In order to solve the problem of access control among different security domains in cloud networks, this paper presents an access control model based on role and trust-degree. The model combines role-based access control and trust-based access control. The role assessment weights are defined based on the user’s role classes, and the trust-degree is calculated according to the role assessment weights and the role’s behavior. In order to increase the accuracy of access control, the model gives the concept and calculation methods of feedback trust-degree. To achieve fine-grained access control, the model introduces direct trust-degree, recommendation trust-degree, and feedback trust-degree, all of which participate in comprehensive trust-degree by adjusting their weights. A simulation experiment was conducted in the LAN environment, and a web system was used to construct an access control model with multisecurity domains in the experiment. The experimental results demonstrate that our model has higher security, expansibility, and flexibility.
POPULATIONS OF YOUNG STELLAR OBJECTS IN NEARBY MOLECULAR CLOUDS

We develop a new method for identifying young stellar objects (YSOs) from star-forming regions using the photometry data from Spitzer's c2d Legacy Project. The aim is to obtain YSO lists as complete as possible for studying statistical properties such as the star formation rate (SFR) and lifetimes of YSOs in different evolutionary stages. The largest obstacle in identifying YSOs comes from background galaxies with similar spectral energy distributions to YSOs. Traditionally, selected color–color and color–magnitude criteria are used to separate YSOs and galaxies. However, since there is no obvious boundary between YSOs and galaxies in color–color diagrams and color–magnitude diagrams (CMDs), those criteria may exclude faint YSOs near the boundary. In this paper, we separate the YSOs and galaxies in a multi-dimensional (multi-D) magnitude space, which is equivalent to using all variations of CMDs simultaneously. Comparing sources from molecular clouds to Spitzer's SWIRE data, which have a negligible amount of YSOs, we can naturally identify YSO candidates (YSOc) located outside of the galaxy-populated regions in the multi-D space. In the five c2d surveyed clouds, we select 322 new YSOc and miss/exclude 33 YSOc compared to Evans et al., and this results in 1313 YSOc in total. As a result, SFR increases 28% correspondingly, but the lifetimes of YSOs in different evolutionary stages remain unchanged. Compared to theories by Krumholz & McKee, our derived SFR suggests that star formation at a large scale is dominated by supersonic turbulence rather than magnetic fields. Furthermore, we identify seven new very low luminosity objects.
THE MATHEMATICS OF SECOND QUANTIZATION*

Here v(or) is known and M is a parameter. By letting v(oa) involve other parameters, the cases of symmetric walls, cusped cavities, Riabouchinsky flows, etc., can be treated in the same way. Using 5-25 points on barriers whose angular extent was as large as 1550, very good approximations were obtained to the curvature, and extremely good approximations to the profiles of the obstacles. This problem has already been adapted for explicit computation on the computing machine at the Institute for Advanced Study. Generalization of the preceding formulae to regions with corners and to annular regions can be easily made, but we have not explored their practicability for accurate computation on high-speed computing machines. A detailed discussion of the preceding formulae and their arithmetizations, together with the accuracy which may be expected if they are used, will appear in a longer article.
Notice of RetractionConstruction of Employee Trust Mechanism in Enterprise - Based on the Integration of Economic Contract and Psychological Contract

Enterprise is an assembly of multi-contract systems, whereas the base of enterprise contract is trust. Economic contract and psychological contract serve as trust liaisons between an enterprise and the employees. The economic contract builds the foundation of psychological contract, which in turn consolidates the economic contract. The ultimate goal of an enterprise is to achieve and maintain psychological contract which enhance satisfaction with economic contract. Based on theoretical analysis, this paper proposes that system construction, system management and emotion management, dynamic contract management and total compensation management conspire to influence the parallel development of economic contract and psychological contract, which further promote and ensure the trust mechanism between the employees and enterprise.
A study on the “Hollow Design” of Chinese bamboo product

Based on the analysis on hundreds of collected bamboo products in China, this paper summarizes six basic functions of bamboo products, discussing these functions embody hollow character in some way because of the hollow affordance of bamboo itself. Furthermore, this study brings up a new concept "Hollow Design", pointing out that the hollow character of bamboo is the origin of the "Hollow Design". Then, this paper finds two design modes of "Hollow Design" which are based on horizontal cutting and vertical cutting of bamboo culms, the hole produced by these two design modes is the key factor and higher development of "Hollow Design", four sorts of holes are discussed. Finally, three advantages of "Hollow Design" are pointed out: "Hollow Design" explores the hollow affordance of bamboo fully; uses the simplest form to finish the most suitable function; provides a new idea for product design, not only for bamboo product design itself.
Lithography beyond light: Microcontact printing with monolayer resists

We describe high-resolution lithography based on transfer of a pattern from an elastomeric stamp to a solid substrate by conformal contact : a nanoscale interaction between substrate and stamp on macroscopic scales that allows transport of material from stamp to substrate. The stamp is first formed by curing poly(dimethyl siloxane) (PDMS) on a master with the negative of the desired surface, resulting in an elastomeric solid with a pattern of reliefs, typically a few microns deep, on its surface. The stamp provides an ink that forms a self-assembled monolayer (SAM) on a solid surface by a covalent, chemical reaction. Because SAMs act as highly localized and efficient barriers to some wet etches, microcontact printing forms part of a convenient lithographic system not subject to diffraction or depth of focus limitations while still providing simultaneous transfer of patterned features. Our study helps to define the strengths and limitations of microcontact printing with SAMs, a process that is necessary to assess its worth to technology. We used lithography based on scanning tunneling microscopy (STM) to demonstrate that disruption of SAMs on gold allowed the formation of etched features as small as 20 nm using a CN - /O 2 etch. This result implied that etching occurred where damage of a few molecules in the ordered SAM allowed passage of cyanide, whereas adjacent molecules in the SAM remained unperturbed at this scale. Features as small as 30 nm 2 etched in gold over areas greater than 1 cm 2 resulted from microcontact printing with replicas of electron-beam-formed masters, with the transfer of these printed SAMs requiring only 1 s. STM studies of these transferred SAMs revealed an achievable order indistinguishable from that found for SAMs prepared from solution. Facile alignment of printing steps at submicron scales may result from new designs of stamps that exploit their limited deformability and lock-and-key-type approaches to mate stamp and substrate.
De-liver CLiPs and revitalize hepatocytes.

The liver is a highly quiescent organ, which has made the existence of hepatic stem cells debatable (1). However, upon injury, the liver shows a remarkable regenerative capacity unmatched by most human organs (2,3). Recent findings shed new light on the origins of liver progenitor cells (LPCs) and source of new hepatocytes during homeostasis and repair. Numerous groups have found that mature hepatocytes (MHs) themselves are the source of hepatic progenitor cells that contribute to liver regeneration (4,5). These findings highlight the plasticity of hepatocytes and a potential target for cell-based therapy in patients with severe liver dysfunction. If hepatocytes have that capacity in vivo , reprogramming of MHs in vitro might be a step in attaining liver regeneration.
Geostatistical space-time modeling for temperature estimation

Air temperature is one of important environmental phenomena with both spatial and temporal characteristics. In order to realize spatial-temporal interpolation at any point in space-time field, a kind of practical product-sum covariance for spatial-temporal modeling is chosen for monthly average air temperature in the three provinces (Heilongjiang, Jilin and Liaoning Province) of Northeast China from January 1972 to December 2008. As every station's temperature can be regarded as a time series, decomposition is processed and seasonal part is removed, and the residuals are generated for further analysis in space-time. Spatial-temporal variogram is built based on the ones of pure space and pure time. Extending 2d-kriging to 3d, the monthly average temperatures of all stations in January 2008 are estimated, and the effect is compared with spatial kriging. The result of compare shows that spatial-temporal interpolation is practical, and because of considering the correlation of both space and time, its accuracy is better than that of spatial kriging.
Colonoscopic screening of average-risk women for colorectal neoplasia.

BACKGROUND Veterans Affairs (VA) Cooperative Study 380 showed that some advanced colorectal neoplasias (i.e., adenomas at least 1 cm in diameter, villous adenomas, adenomas with high-grade dysplasia, or cancer) in men would be missed with the use of flexible sigmoidoscopy but detected by colonoscopy. In a tandem study, we examined the yield of screening colonoscopy in women. METHODS To determine the prevalence and location of advanced neoplasia, we offered colonoscopy to consecutive asymptomatic women referred for colon-cancer screening. The diagnostic yield of flexible sigmoidoscopy was calculated by estimating the proportion of patients with advanced neoplasia whose lesions would have been identified if they had undergone flexible sigmoidoscopy alone. Lesions were considered detectable by flexible sigmoidoscopy if they were in the distal colon or if they were in the proximal colon in patients who had concurrent small adenomas in the distal colon, a finding that would have led to colonoscopy. The results were compared with the results from VA Cooperative Study 380 for age-matched men and women with negative fecal occult-blood tests and no family history of colon cancer. RESULTS Colonoscopy was complete in 1463 women, 230 of whom (15.7 percent) had a family history of colon cancer. Colonoscopy revealed advanced neoplasia in 72 women (4.9 percent). If flexible sigmoidoscopy alone had been performed, advanced neoplasia would have been detected in 1.7 percent of these women (25 of 1463) and missed in 3.2 percent (47 of 1463). Only 35.2 percent of women with advanced neoplasia would have had their lesions identified if they had undergone flexible sigmoidoscopy alone, as compared with 66.3 percent of matched men from VA Cooperative Study 380 (P<0.001). CONCLUSIONS Colonoscopy may be the preferred method of screening for colorectal cancer in women.
Prognostic indicators in cats with hypertrophic cardiomyopathy.

BACKGROUND Left atrial (LA) enlargement, congestive heart failure (CHF), and aortic thromboembolism (ATE) are associated with decreased survival in cats with hypertrophic cardiomyopathy (HCM), but the prognostic value of echocardiographic variables has not been well characterized. HYPOTHESIS/OBJECTIVES We hypothesized that LA echocardiographic variables and assessment of left ventricular (LV) diastolic and systolic function would have prognostic value in cats with HCM. ANIMALS Two hundred eighty-two cats diagnosed with HCM. METHODS Clinical and echocardiographic records of affected cats seen at the Royal Veterinary College from 2004 to 2009 were retrospectively analyzed. Only cats with echocardiographic confirmation of LV diastolic wall thickness ≥ 6 mm were included. Outcomes were obtained from clinical records or referring veterinarians and owners. RESULTS Deaths occurred in 164 cats, of which 107 were believed to have been cardiac deaths. Univariable predictors of an increased risk of cardiac death included older age, absence of a murmur, presence of a gallop sound or arrhythmia, presentation with either CHF or ATE, extreme LV hypertrophy (≥ 9.0 mm), LV fractional shortening (FS%) ≤ 30%, regional wall hypokinesis, increased left atrial size, decreased left atrial function, spontaneous echo-contrast/thrombus or both, absence of left ventricular outflow tract obstruction, and a restrictive diastolic filling pattern. Cox's proportional hazard analysis identified LA dysfunction, low LV systolic function, and extreme LV hypertrophy as independent predictors of decreased cardiac survival time. CONCLUSIONS AND CLINICAL IMPORTANCE Echocardiographic measurement of LA function, extreme LV hypertrophy, and LV systolic function provides important prognostic information in cats with HCM.
A multicenter randomized controlled trial to evaluate the effect of adjuvant cisplatin and 5-fluorouracil therapy after curative resection in cases of pancreatic cancer.

BACKGROUND There have been few randomized controlled clinical trials until now to determine the effectiveness of adjuvant treatments for pancreatic cancer, and the results reported so far are inconsistent. METHODS Patients with invasive ductal pancreatic cancer who underwent radical surgery with clear histological margins at 11 Japanese institutions were enrolled and randomly assigned to one of two groups: surgery-alone group (no further treatment after surgery) and the surgery + chemotherapy group [two courses of postoperative adjuvant systemic chemotherapy with cisplatin (80 mg/m(2), Day 1) and 5-fluorouracil (500 mg/m(2)/day, Days 1-5)]. Patients with a positive resectional margin or with resected distant metastases were excluded from the trial in order to minimize the influence of residual cancer. RESULTS Between 1992 and 2000, 89 patients were randomized into the two arms of the trial (45 patients to the surgery + chemotherapy arm and 44 patients to the surgery-alone arm). Four patients in total were found to be ineligible (three in the surgery + chemotherapy group and one in the surgery-alone group). The baseline characteristics were comparable between the two groups. In the surgery + chemotherapy group, four patients did not receive the adjuvant treatment because of patient refusal. Toxicity was minor and acceptable among the eligible patients in the surgery + chemotherapy group. The estimated 5-year survival rates were 26.4% in the surgery + chemotherapy group and 14.9% in the surgery-alone group, and the median duration of survival was 12.5 months and 15.8 months, respectively. The recurrence rates at 5 years were 73.6 and 80.8%, respectively, in the surgery + chemotherapy and the surgery-alone groups. The differences in the survival and recurrence rates between the two groups were not statistically significant. CONCLUSIONS Postoperative adjuvant chemotherapy using cisplatin and 5-fluorouracil was safe and well tolerated; however, no clear survival benefit could be demonstrated.
Hepatic Lipid Metabolism in Hypophysectomized and Growth Hormone-Treated Hypophysectomized Rats

Summary Changes which occur in hepatic lipid metabolism of hypophysectomized and bovine growth hormone-treated hypophysectomized rats were studied. Synthesis of lipids, as measured by the ability of tissue slices to incorporate 3H-glycerol into lipids, decreased rapidly following hypophysectomy. Three weeks after hypophysectomy, glycerol incorporation was approximately 40% of that in normal rats and remained depressed over the experimental period. Synthesis of acidic lipids was not appreciably affected by hypophysectomy but labeling of all other classes of lipids, particularly triglycerides, was diminished. Daily administration of bovine growth hormone over a 10-day period to animals 4-weeks posthypophysectomy resulted in a 75% increase in total lipid synthesis. Incorporation of label into the lecithin and cephalin fractions exhibited the greatest increase of those lipid fractions studied during the first 5 days of bovine growth hormone treatment.
Is alcohol good for your health?

In speaking about the role of alcohol in society, Abraham Lincoln observed, “None seemed to think the injury arose from the use of a bad thing but from the abuse of a very good thing. ” The article by Gaziano et al.1 in this issue of the Journal again raises the question whether, from the standpoint of one's health, moderate consumption of alcoholic beverages, usually defined as up to two standard drinks per day, is a good thing. Alcohol has been widely consumed through the ages because of its perceived benefits as a social lubricant and for relaxation, mood alteration, and .
Preservation of rat livers by cold storage: a comparison between the University of Wisconsin solution and Hypothermosol.

OBJECTIVES The University of Wisconsin solution (UW) is the gold standard for cold storage (CS) of donor livers. However, UW contains the colloid Hydroxyethyl starch (HES), which may cause perfusion deficits due to its high viscosity. Recently, a new CS preservation solution, Hypothermosol (HTS), was introduced which contains the less viscous colloid Dextran. The aim of this study was to assess HTS as a cold storage solution for preservation of the liver. METHODS In an isolated perfused rat liver model, hepatocellular damage was assessed after 24 hours of CS. Liver enzymes were measured during reperfusion with Krebs-Henseleit Buffer. Bile was collected during reperfusion as a parameter of liver function. RESULTS CS using HTS showed a significant decrease of ALT and LDH levels (as compared to UW) at all time points during reperfusion. For LDH these results where most pronounced at t=10 min (84 +/- 7.09 vs 113 +/- 7.57: p < 0.05) and t=30 min (149.2 +/- 9.68 vs 194 +/-6.52: p< 0.05). Regarding liver function, more bile was produced after 24 hours CS in HTS, but this did not reach statistical significancy. CONCLUSIONS Cold storage preservation of rat livers using Hypothermosol results in equal or even better preservation as compared to cold storage using UW.
Adaptive recovery of a chirped sinusoid in noise. I. Performance of the RLS algorithm

The authors study the ability of the exponentially weighted recursive least square (RLS) algorithm to track a complex chirped exponential signal buried in additive white Gaussian noise (power P/sub n/). The signal is a sinusoid whose frequency is drifting at a constant rate Psi . lt is recovered using an M-tap adaptive predictor. Five principal aspects of the study are presented: the methodology of the analysis; proof of the quasi-deterministic nature of the data-covariance estimate R(k); a new analysis of RLS for an inverse system modeling problem; a new analysis of RLS for a deterministic time-varying model for the optimum filter; and an evaluation of the residual output mean-square error (MSE) resulting from the nonoptimality of the adaptive predictor (the misadjustment) in terms of the forgetting rate ( beta ) of the RLS algorithm. It is shown that the misadjustment is dominated by a lag term of order beta /sup -2/ and a noise term of order beta . Thus, a value beta /sub opt/ exists which yields a minimum misadjustment. It is proved that beta /sub opt/=((M+1) rho Psi /sup 2/)/sup 1/3/, and the minimum misadjustment is equal to (3/4)P/sub n/(M+1) beta /sub opt/, where rho is the input signal-to-noise ratio (SNR). >
A Sensitive and Inexpensive Yeast Bioassay for the Mycotoxin Zearalenone and Other Compounds with Estrogenic Activity

ABSTRACT Zearalenone (ZON) is a nonsteroidal estrogenic mycotoxin produced by plant-pathogenic species of Fusarium. As a consequence of infection with Fusarium culmorum and Fusarium graminearum, ZON can be found in cereals and derived food products. Since ZON is suspected to be a cause of human disease, including premature puberty syndrome, as well as hyperestrogenism in farm animals, several countries have established monitoring programs and guidelines for ZON levels in grain intended for human consumption and animal feed. We developed a low-cost method for monitoring ZON contamination in grain based on a sensitive yeast bioassay. The indicator Saccharomyces cerevisiae strain YZRM7 is unable to grow unless an engineered pyrimidine biosynthetic gene is activated by the expressed human estrogen receptor in the presence of exogenous estrogenic substances. Deletion of the genes encoding ATP-binding cassette (ABC) transporters Pdr5p and Snq2p increases net ZON uptake synergistically. Less than 1 μg of ZON per liter of medium is sufficient to allow growth of the indicator strain. To prevent interference with pyrimidines potentially present in biological samples, we also disrupted the genes FUR1 and URK1, blocking the pyrimidine salvage pathway. The bioassay strain YZRM7 allows qualitative detection and quantification of total estrogenic activity in cereal extracts without requiring further cleanup steps. Its high sensitivity makes this assay suitable for low-cost monitoring of contamination of maize and small grain cereals with estrogenic Fusarium mycotxins.
Digital radio mondiale: broadcasting and reception

In this paper, the DRM (digital radio mondiale) system for digital radio broadcasting, designed by the DRM consortium, is described. For receiving DRM signals properly some professional receivers are available. Modified AM receivers together with software allow DRM demodulation and audio decoding. In this paper the modification of the Grundig YB400 is presented.
A scalar compromise equilibrium for n-person prescriptive games

A scalar equilibrium (SE) is defined for n-person prescriptive games in normal form. When a decision criterion (notion of rationality) is either agreed upon by the players or prescribed by an external arbiter, the resulting decision process is modeled by a suitable scalar transformation (utility function). Each n-tuple of von Neumann-Morgenstern utilities is transformed into a nonnegative scalar value between 0 and 1. Any n-tuple yielding a largest scalar value determines an SE, which is always a pure strategy profile. SEs can be computed much faster than Nash equilibria, for example; and the decision criterion need not be based on the players’ selfishness. To illustrate the SE, we define a compromise equilibrium, establish its Pareto optimality, and present examples comparing it to other solution concepts.
Automatable lipid bilayer formation and ion channel measurement using sessile droplets

Artificial lipid bilayer membranes have been used to reconstitute ion channels for scientific and technological applications. Membrane formation has traditionally involved slow, labor intensive processes best suited to small scale laboratory experimentation. We have recently demonstrated a high throughput method of membrane formation using automated liquid-handling robotics. We describe here the integration of membrane formation and measurement with two methods compatible with automation and high throughput liquid-handling robotics. Both of these methods create artificial lipid bilayers by joining lipid monolayers self-assembled at the interface of aqueous and organic phases using sessile aqueous droplets in contact with a measurement electrode; one using a pin tool, commonly employed in high throughput fluid handling assays, and the other using a positive displacement pipette. Membranes formed with both methods were high quality and supported measurement of ion channels at the single molecule level. Full automation of bilayer production and measurement with the positive displacement pipette was demonstrated by integrating it with a motion control platform.