Web services are becoming important in applications from electronic commerce to application interoperation. While numerous efforts have focused on service composition, service selection among similar ...services from multiple providers has not been addressed. Such issue is more serious when services are embraced in Grid platforms, which are usually resource-conscious. Experimental results show that our considerations are valid and our preliminary solution works well in our Globus grid network.
BACKGROUND For anatomical and technical reasons, many transplant centers restrict laparoscopic live donor nephrectomy (in contrast with open live donor nephrectomy) to left kidneys. HYPOTHESIS This ...change in surgical practice increases procurement and transplantation rates of live donor kidneys with multiple renal arteries (RAs), without affecting donor and recipient outcomes. DESIGN AND SETTING Retrospective review at an academic tertiary care referral center comparing laparoscopically procured single vs multiple-RA kidney grafts (April 1997 to October 2000). PATIENTS Seventy-nine consecutive left laparoscopic live kidney donors and 78 transplant recipients. MAIN OUTCOME MEASURES Donor and recipient complications and postoperative length of stay; cold and warm ischemia time; operating time; short-term and long-term graft function; and survival. RESULTS We noted multiple RAs in 21 (27%) of all kidneys. The proportion of donors with 1 or more perioperative complications was 19% in the single-RA group vs 10% in the multiple-RA group (P was not significant). For the recipients, we noted no significant differences between groups with respect to surgical complications, quality of early and late graft function, rejection rates, graft losses (all immunologic), and graft survival. Cold and warm ischemia time and length of stay were similar for donors and recipients in both groups. Median operating times were significantly longer for the multiple-RA vs single-RA group (difference, 41 minutes for donors and 45 minutes for recipients; P<.02). CONCLUSIONS While the introduction of laparoscopic live donor nephrectomy has significantly increased the number of grafts with multiple RAs (compared with historical open controls), this change in practice is safe for both donors and recipients from a patient outcome–based perspective. However, from an economic perspective, the longer operating time associated with multiple-RA grafts provides strong added rationale for optimization of surgical instruments and techniques to make right-sided laparoscopic nephrectomy a routine intervention.Arch Surg. 2001;136:897-907-->
We report the discovery of a mysterious giant \(H_{\alpha}\) blob that is \(\sim 8\) kpc away from the main MaNGA target 1-24145, one component of a dry galaxy merger, identified in the first-year ...SDSS-IV MaNGA data. The size of the \(H_{\alpha}\) blob is \(\sim\) 3-4 kpc in radius, and the \(H_{\alpha}\) distribution is centrally concentrated. However, there is no optical continuum counterpart in deep broadband images reaching \(\sim\)26.9 mag arcsec\(^{-2}\) in surface brightness. We estimate that the masses of ionized and cold gases are \(3.3 \times 10^{5}\) \(\rm M_{\odot}\) and \(< 1.3 \times 10^{9}\) \(\rm M_{\odot}\), respectively. The emission-line ratios indicate that the \(H_{\alpha}\) blob is photoionized by a combination of massive young stars and AGN. Furthermore, the ionization line ratio decreases from MaNGA 1-24145 to the \(H_{\alpha}\) blob, suggesting that the primary ionizing source may come from MaNGA 1-24145, likely a low-activity AGN. Possible explanations of this \(H_{\alpha}\) blob include AGN outflow, the gas remnant being tidally or ram-pressure stripped from MaNGA 1-24145, or an extremely low surface brightness (LSB) galaxy. However, the stripping scenario is less favoured according to galaxy merger simulations and the morphology of the \(H_{\alpha}\) blob. With the current data, we can not distinguish whether this \(H_{\alpha}\) blob is ejected gas due to a past AGN outburst, or a special category of `ultra-diffuse galaxy' (UDG) interacting with MaNGA 1-24145 that further induces the gas inflow to fuel the AGN in MaNGA 1-24145.
This chapter describes the challenges involved in the integration of databases storing diverse but related types of life sciences data. A major challenge in this regard is the syntactic and semantic ...heterogeneity of life sciences databases. There is a strong need for standardizing the syntactic and semantic data representations. We discuss how to address this by using the emerging Semantic Web technologies based on the Resource Description Framework (RDF) standard. This chapter presents two use cases, namely YeastHub and LinkHub, which demonstrate how to use the latest RDF database technology to build data warehouses that facilitate integration of genomic/proteomic data and identifiers.
Spatial orientation is based on the integration of concordant and redundant information from the visual, vestibular, and somatosensory systems. When a person is submerged underwater, somatosensory ...cues are reduced, and vestibular cues are ambiguous with respect to upright or inverted position. Visual cues may be lost as a result of reduced ambient light. Underwater disorientation has been cited as one of the major factors that could inhibit emergency egress after a helicopter ditching into water. One countermeasure to familiarize aircrew with underwater disorientation is emergency egress training. This study examined the relative degree of underwater disorientation induced by the Modular Egress Training Simulator (METS) and the Shallow Water Egress Trainer (SWET).
There were 36 healthy subjects (28 males and 8 females) who participated in the study. Underwater disorientation was quantified by measuring the deviation of subjective vertical-pointing from the gravitational vertical, time to egress, and subjective reports of disorientation and ease of egress. A repeated measure design was employed with seat position (SWET chair, METS window, and METS aisle) as the sole factor.
Subjective response data indicated that the degree of disorientation is rated significantly higher, and the ease of egress is rated worse from the two METS seat positions than from the SWET. This is supported by the findings that subjective vertical-pointing accuracy is worse in the METS seat positions than in the SWET (p < 0.01). The time to egress is longer from the two METS seat positions than from SWET (p < 0.01).
Our results indicate that the METS device is effective for inducing underwater disorientation as provoked by simulated helicopter ditching. disorientation, vestibular, subjective pointing.
The use of microarray technology to perform parallel analysis of the expression pattern of a large number of genes in a single experiment has created a new frontier of medical research. The vast ...amount of gene expression data generated from multiple microarray experiments requires a robust database system that allows efficient data storage, retrieval, secure access, data dissemination, and integrated data analyses. To address the growing needs of microarray researchers at Yale and their collaborators, we have built the Yale Microarray Database (YMD). YMD is Web-accessible with the following features: (i) a Web program that tracks DNA samples between source plates and arrays, (ii) the capability of finding common genes/clones across different array platforms, (iii) an image file server, (iv) laboratory-based user management and access privileges, (v) project management, (vi) template data entry, (vii) linking gene expression data to annotation databases for functional analysis. YMD is currently being used on a pilot basis by several laboratories for different organisms and array platforms.
20mW C- or L-band ECLs using silicon MEMS electrostatic actuators tune over 5 THz, locking to 25 GHz channels with ±1.25 GHz accuracy and giving DFB-like system performance over a range of ...environmental conditions.
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