cssi/SciSciGPT-SciSciNet huggingface dataset:
The Right People in the Wrong Places: The Paradox of Entrepreneurial Entry and Successful Opportunity Realization

We advance a model that highlights contingent linkages between overconfidence and narcissism, entrepreneurial entry, and the successful realization of venture opportunities. Overall, our proposals point to a paradox in which entrepreneurs high in overconfidence and narcissism are propelled toward more novel venture contexts—where these qualities are most detrimental to venture success—and are repelled from more familiar venture contexts—where these qualities are least harmful and may even facilitate venture success. To illuminate these patterns of misalignment, we attend to the defining characteristics of alternative venture contexts and the focal constructs of overconfidence and narcissism.
Heat Conduction in a Rectangular Parallelopiped With Multiple Cylindrical Cavities

Calcul de la conduction thermique stationnaire dans un parallellepipede rectangle renfermant 4 cavites cylindriques circulaires longitudinales
Equidissections of polygons

A dissection of a planar polygon K is a family of triangles whose union is K and such that the intersection of the interiors of any two distinct triangles is empty. If all the triangles have equal areas, the dissection is called an equidissection of K. An equidissection of K into m triangles is called an m-equidissection of K. It is known that in any m-equidissection of a square m is even. It has also been shown that in any m-equidissection of the regular n-gon, n≥5, m is a multiple of n and that in any m-equidissection of a centrally symmetric polygon m is even. In the present paper we explore equidissections of more general polygons. For instance, we show that for almost all polygons no equidissection exists. Furthermore, there are polygons for which the integers m such that the polygon has an m-equidissection are not the multiples of a single integer.
FIRST-FORBIDDEN BETA-DECAY MATRIX ELEMENTS

The general theory of first-forbidden beta-transitions involves seven nuclear matrix elements in the nonrelativistic approximation. In principle the number of independent parameters can be reduced to four with the help of the relation $({W}_{f}\ensuremath{-}{W}_{i})(f|X|i)=(f|[{H}_{0},X]|i)+(f|[{H}_{c},X]|i)+(f|[{H}_{\ensuremath{\nu}},X]|i).$ Here $W$ is an energy eigenvalue, $X$ a coordinate type first-forbidden operator, ${H}_{0}$ the free particle Hamiltonian, ${H}_{c}$ the Coulomb interaction, and ${H}_{\ensuremath{\nu}}$ the specifically nuclear interaction. The commutators of ${H}_{0}$ and ${H}_{c}$ with $X$ are easily evaluated, but [${H}_{\ensuremath{\nu}}$, $X$] presents difficulties. However, the matrix elements of [${H}_{\ensuremath{\nu}}$, $X$] can be estimated by general physical arguments based on the semi-empirical energy surface and the validity of shell model considerations. The explicit form of ${H}_{\ensuremath{\nu}}$ is not required a fortunate circumstance since ${H}_{\ensuremath{\nu}}$ for complex nuclei is at present essentially unknown. These calculations determine the common proportionality factor $\ensuremath{\Lambda}$ in the relations ${\frac{1}{2}\ensuremath{\Lambda}\ensuremath{\alpha}Z\ensuremath{\int}\frac{\mathbf{r}}{R},=\ensuremath{-}i\ensuremath{\int}\mathbf{\ensuremath{\alpha}},}{\frac{1}{2}\ensuremath{\Lambda}\ensuremath{\alpha}Z\ensuremath{\int}\frac{\mathbf{\ensuremath{\sigma}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{r}}{R},=\ensuremath{-}i\ensuremath{\int}{\ensuremath{\gamma}}_{5},}{\frac{1}{2}\ensuremath{\Lambda}\ensuremath{\alpha}Z\ensuremath{\int}\mathbf{\ensuremath{\sigma}}\ifmmode\times\else\texttimes\fi{}\frac{\mathbf{r}}{R},=\ensuremath{-}\ensuremath{\int}\ensuremath{\beta}\mathbf{\ensuremath{\alpha}}.}$
An extension of the finite hankel transform and applications

Abstract New finite Hankel transforms with kernels of the form [ J μ ( ξ i x ) Y μ ( ξ i a )- J μ ( ξ i a ) Y μ ( ξ i x )] and the corresponding infinite series are introduced, which bring the solution of Bessel's equation with asymmetric endpoint conditions within the realm of integral transform theory. A general solution for the transient temperatures produced in a finite, hollow cylinder by an asymmetrical internal heat source, when radiation takes place on all four surfaces, is accomplished. It is shown how this solution contains Carslaw and Jaeger's results [1] on hollow cylinders as a special case.
A genetic approach to the taxonomy of Mentzelia lindleyi and M. crocea (Loasaceae)

cussed in this paper, present a problem of this kind. Mentzelia tindleyi and M. crocea are spring flowering annuals with rounded, papillose seeds and linear filaments. These characters place them in Sectioll Trachyphytwm, whereas their large, mucronate petals with some orange pigment at the base distinguish them from other members of this section. The only Mentzelias likely to be confused with M. lindleyi and M. crocea are M. gracilenta T. & G. and M. nitens Greene. Mentzelia gracilenta grows in the inner Coast Ranges generally south of M. lindleyi, and can be distinguished from M. lindleyi and M. crocea by its smaller, blunt or retuse petals. Mentzelia nitens occurs on the Mojave Desert and is most readily distinguished from M. tindleyi and M. crocea by the lack of orange pigment in its petals. The relationship of M. lindleyi and M. crocea to other members of Section Trachyphytum has been briefly discussed in a previous paper (Thompson and Lewis, 1955). Meentzelia ltindleyi is characterized by broad yellow-orange petals with a prominent orange spot at the base and by its habit, many individuals branching at or just above the ground level. Plants of this sort occur in the inner Coast Ranges of Central California. Mentzelia croc,ea differs in having narrower, yellow petals with a faint orange spot at the base and by branching well above
Delayed hemorrhage from a gastrointestinal anastomotic suture line: report of a case.

The unusual occurrence of bleeding from a gastrointestinal anastomosis 29 days after right colectomy and ileotransverse colostomy is described. Diagnosis and prompt treatment were facilitated by the use of selective superior mesenteric arteriography.
The Cup of the Hand

In his Perspective, Laughlin provides historical context for the research article of Senthil et al., which proposes that quantum number fractionalization might occur at quantum critical points. Laughlin places particular emphasis on the cosmological implications of their ideas and the fact that these can, in principle, be tested with table-top experiments.
Ion beam analysis of glass surfaces: Dating, authentication and conservation

Abstract The use of MeV ion beams to analyze the altered surface layer present on all glasses is discussed. This includes a brief description of the structure of common glasses and how they react with typical environments. The use of nuclear reaction analysis and Rutherford backscattering to study this altered surface is illustrated. The importance of these methods to both glass dating and glass conservation is briefly discussed.
Microstructure of ultrathin films of YBa2Cu3O7- delta on MgO.

The microstructure of ultrathin films of ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ on MgO has been studied for film thicknesses from 1.2 to 12 nm. For thicknesses of 1.2, 2.4, and 7.2 nm, the films appear to be in the tetragonal modification and consist of interconnected, low-aspect-ratio (thickness to diameter ratio \ensuremath{\le}0.1) nuclei. The dominant growth mechanism is propagation in the a-b plane of one-unit-cell-high ledges by attachment onto the ledge face, resulting in a large difference between the c- and a-direction growth rates and forcing a two-dimensional appearance in the initial deposition. The 12-nm films are also tetragonal but provide complete coverage of the substrate. Their microstructure has passed the initial nucleation and growth stage and is similar to that of standard (thickness \ensuremath{\ge}100 nm) films. By analysis of the free energy of the tetragonal-to-orthorhombic transition occurring upon cooling from the deposition temperature, we note a film-thickness dependence of the energy available for the transition. We postulate this as an explanation for the lack of orthorhombicity in ultrathin films.
Resist Contrast Measurements Using A Development Rate Monitor

The variation of energy density with depth in electron exposed resists leads to contrast measurements which can depend on film thickness and development time. In this work, two new contrast parameters are defined. One of these is independent of resist thickness and may be used to characterize resist-developer material properties. The other is thickness and process dependent but can be related to feature profile quality. A development rate monitor was used to determine these contrast parameters by simultaneously measuring the dissolution rates from areas of resist exposed at different doses. The doses were chosen to model an isolated unexposed space in the resist, the worst contrast feature in electron beam lithography.
Expedient Preparation of 4,6-Dihalo-3-arylisobenzofuran-1(3H)-ones from 3,5-Dihalo-N-ethylbenzamides

3,5-Dihalobenzoic acid derivatives have long been known as scaffolds for compounds exhibiting a variety of biological activities. For example, compounds incorporating this moiety exhibit phytotoxic...
Cycle-dependent and time-dependent bone fracture with repeated loading

Fatigue tests of human cortical bone (up to 1.74 X 10(6) cycles) were conducted under tension-compression (T-C) and zero-tension (O-T) modes with a 2Hz, stress controlled, sinusoidal loading history. Tensile creep-fracture tests at constant stress levels were also performed. The relationship between the initial cyclic strain range and cycles to failure with the T-C specimens were consistent with that derived previously in low-cycle fatigue under strain control. Using a time-dependent failure model, the creep-fracture data was found to be consistent with previous studies of the influence of strain rate on the monotonic tensile strength of bone. The model also predicted quite well the time to failure for the O-T fatigue specimens, suggesting that creep damage plays an important role in O-T fatigue specimens.
Suppression of diamondback moth using Bt-transgenic plants as a trap crop

Abstract Several types of trap crops have been recommended for managing the diamondback moth, Plutella xylostella , including collards ( Brassica oleracea var. acephala ) and Indian mustard ( Brassica juncea L.). However, results have been variable perhaps because populations of P. xylostella develop on these trap crops and spill over to the cash crop. To overcome this problem, we sought to develop “dead-end” trap crops that were more attractive for oviposition than the cash crop but on which P. xylostella larvae cannot survive. We have produced Bacillus thuringiensis (Bt)-transgenic collard and Indian mustard lines with a cry1C gene that have the potential to be used as a “dead-end” trap crop for P. xylostella . Greenhouse and small cage studies confirmed the control of P. xylostella larvae on the Bt crops. Furthermore, Indian mustard was significantly preferred over cabbage and collards for oviposition, regardless of whether the Indian mustard was Bt or non-Bt. The use of Bt Indian mustard as a trap crop significantly reduced the number of larvae that appeared on a cabbage cash crop, compared with using a non-Bt Indian mustard trap crop. However, this reduction also occurred when using Bt collards as a trap crop, despite collards being less preferred for oviposition. In fact, despite the overall increase in oviposition caused by the presence of Indian mustard compared with collards, the use of either Bt Indian mustard or Bt collards provided the same level of protection to the cash crop. Both plants also resulted in significant suppression of a P. xylostella population over 3 generations in the greenhouse test and 2 generations in the small cage experiment, suggesting that in places where immigration may be limited some long-term population suppression may occur. We suggest that Bt trap crops may be useful tools in situations where the cash crop may not be suitable or desirable for genetic engineering.
URINARY AND PLASMA ESTROGEN CONJUGATES, ESTRADIOL AND ESTRONE CONCENTRATIONS IN NONPREGNANT AND EARLY PREGNANT MARES

Abstract A direct radioimmunoassay for estrogen conjugates (EC) was applied to paired blood and urine samples collected from 20 mares and compared against estrone (E 1 ) and estradiol-17β (E 2 ) to monitor changes in estrogen production during ovulatory cycles and early pregnancy. Blood samples were taken daily from five mares through two consecutive ovulations and from six mares at 6-h intervals starting 48 hours prior to ovulation and continuing after ovulation had occurred. Blood samples were also collected daily or three times per week from conception until Day 60 of pregnancy in nine pregnant mares. The mean urinary EC, plasma EC and plasma E 2 dynamics were parallel in nonpregnant mares, with a 3-fold increase in mean urinary EC concentrations from baseline to the ovulatory peak, a 1.8-fold increase in mean plasma EC concentrations and a 1.4-fold increase in mean plasma E 2 concentrations. In early pregnancy, a two-fold increase in mean plasma E 1 and EC concentrations occurred in concert with a five-fold rise in mean urinary EC concentrations, whereas plasma E 2 did not change. Following hydrolysis and chromatographic separation, E 1 and E 2 were identified as the hydrolytic products in the urine of nonpregnant and pregnant mares; however, an unidentified estrogen was the major hydrolytic product in nonpregnant mares and pregnant mares prior to Day 38 of pregnancy. The increased resolution of the EC profiles compared with the profiles of other estrogen components indicates that the determination of EC in urine or plasma provides a useful alternative method for monitoring reproductive events in mares.
Newtonianism, reductionism and the art of congressional testimony

Earlier this year, at the University of Cambridge, Steven Weinberg gave a talk at the Tercentenary Celebration of Newton's Principia. This is what he said.
“Anti-Phase” Plasmonic and/or Metamaterial “Satellites” for Induced Transparency and Cloaking

Instead of totally covering an object with properly designed plasmonic shells in order to achieve cloaking, here we discuss the idea of using “anti-phase” scatterers placed near an object to get to the same goal.
Interactions of nitric oxide and organic nitroso compounds with metalloporphyrins and heme

The chemistry of nitric oxide (NO) has taken on new dimensions since the discovery, about a decade ago, of a myriad of biological events that NO participates in. Many of the foundations of metal-NO chemistry were laid out earlier by inorganic chemists and biochemists investigating the structures and electronic properties of the heme-NO moiety or its model compounds. Certainly, the persistent work over the last three decades by chemists working with metal nitrosyls has paid off. Current areas of research in heme-NO chemistry include (i) how the NO group approaches and binds to the metal center (or how it dissociates from the metal center); (ii) the ground state and excited state geometries of the metal-NOfragment; (iii) effects of the trans axial ligands on NO orientation and/or dissociation; and (iv) N-N bond formation from NO molecules catalyzed by heme groups.
Measuring a 10,000-fold enhancement of singlet molecular oxygen (1O2*) concentration on illuminated ice relative to the corresponding liquid solution

Abstract Much attention has focused on the highly reactive hydroxyl radical in the oxidation of trace organic compounds on snow and ice (and subsequent release of volatile organics to the atmospheric boundary layer) but other oxidants are likely also important in this processing. Here we examine the ice chemistry of singlet molecular oxygen (1O2*), which can be significant in atmospheric water drops but has not been examined in ice or snow. To examine 1O2* on ice we illuminate laboratory ices containing Rose Bengal (RB) as the source of 1O2*, furfuryl alcohol (FFA) as the probe, and Na2SO4 to control the total solute concentration. We find that the 1O2*-mediated loss of FFA (and, thus, the 1O2* concentration) is up to 11,000 times greater on ice than in the equivalent liquid sample at the same photon flux. We attribute this large increase in the 1O2* steady-state concentration to the freeze-concentration of solutes into liquid-like regions (LLRs) in/on ice: compared to the initial solution, in the LLRs of ice the sources for 1O2* are highly concentrated, while the concentration of the dominant sink for 1O2* (i.e., water) remains largely unchanged. Similar to results expected in liquid solution, rates of FFA loss in ice depend on both the initial sensitizer concentration and temperature, providing evidence that these reactions occur in LLRs. However, we find that the enhancement in 1O2* concentrations on ice does not follow predictions from freezing-point depression, likely because experiments were conducted below the eutectic temperature for sodium sulfate, where all of the salt should have precipitated. We also explore a method for separating 1O2* and OH contributions to FFA oxidation in laboratory ices and show its application to two natural snow samples. We find that 1O2* concentrations in these snows are approximately 100 times higher than observed in polluted, mid-latitude fog waters, showing that the enhancement of 1O2* on ice is environmentally relevant and that 1O2* could be a significant sink for electron-rich organic compounds in snow.
Genetic Requirements for Inheritance of RNAi in C. elegans

In Caenorhabditis elegans, the introduction of double-stranded RNA triggers sequence-specific genetic interference (RNAi) that is transmitted to offspring. The inheritance properties associated with this phenomenon were examined. Transmission of the interference effect occurred through a dominant extragenic agent. The wild-type activities of the RNAi pathway genes rde-1 andrde-4 were required for the formation of this interfering agent but were not needed for interference thereafter. In contrast, therde-2 and mut-7 genes were required downstream for interference. These findings provide evidence for germ line transmission of an extragenic sequence-specific silencing factor and implicate rde-1 and rde-4 in the formation of the inherited agent.
Test patterns and quality metrics for digital video compression

Lossy video compression systems such as MPEG2 introduce picture impairments such as image blocking, color distortion and persistent color fragments, 'mosquito noise,' and blurring in their outputs. While there are video test clips which exhibit one or more of these distortions upon coding, there is need of a set of well-characterized test patterns and video quality metrics. Digital test patterns can deliver calibrated stresses to specific features of the encoder, much as the test patterns for analog video stress critical characteristics of that system. Metrics quantify the error effects of compression by a computation. NIST is developing such test patterns and metrics for compression rates that typically introduce perceptually negligible artifacts, i.e. for high quality video. The test patterns are designed for subjective and objective evaluation. The test patterns include a family of computer-generated spinning wheels to stress luminance-based macro-block motion estimation algorithms and images with strongly directional high-frequency content to stress quantization algorithms. In this paper we discuss the spinning wheel test pattern. It has been encoded at a variety of bit rates near the threshold for the perception of impairments. We have observed that impairment perceptibility depends on the local contrast. For the spinning wheel we report the contrast at the threshold for perception of impairments as a function of the bit rate. To quantify perceptual image blocking we have developed a metric which detects 'flats:' image blocks of constant (or near constant) luminance. The effectiveness of this metric is appraised.
Purification and properties of a new aminopeptidase from Escherichia COLI K12.

Abstract An aminopeptidase (EC 3.4.11.-) capable of hydrolyzing l -alanyl-β-naphthylamide and certain other aminoacyl β-naphthylamides was purified to homogeneity from extracts of Escherichia coli K-12. The enzyme, designated aminopeptidase II, is a monomeric protein of mol. wt. 100 000. It exhibits a broad pH optimum in the range pH 7.0–9.0. Although Zn 2+ , Fe 3+ and Cr 3+ are strong inhibitors of enzyme activity, a metal requirement for catalysis could not be firmly established. Neither sulfhydryl reagents nor serine protease inhibitors affected enzyme activity.
Depression symptoms and body dissatisfaction association among polycystic ovary syndrome women

Abstract Objective One publication reported that lower body satisfaction and lower education were independent predictors of depression in polycystic ovary syndrome (PCOS) in women. This study replicates that analysis using different instruments, and adds androgen levels to the model. Methods Cross-sectional analysis of questionnaires (Quick Inventory of Depressive Symptomatology-Self-Report, Body Esteem Scale) and serum androgens from a community cohort with (n=94) and without (n=96) PCOS, matched by BMI category. Non-parametric tests, Spearman correlations, and negative binomial regression models were analyzed. Results Depression symptoms were common (40–60% in lean, overweight and obese BMI categories) in the PCOS cohort, albeit generally of mild severity. The PCOS women had similar depression symptom severity (P > .20) and similar body dissatisfaction (P ≥ .25) as the regularly cycling women in total and stratified by BMI category. In both the PCOS and non-PCOS cohorts, depression symptom severity was positively correlated with dissatisfaction with physical appearance and physical conditioning (P Conclusions Among non-obese PCOS women, their subjective body image was strongly associated with the severity of their depression symptoms. Most of the obese PCOS cohort had low body satisfaction and depression symptoms, therefore individual differences in the body dissatisfaction scores were not helpful in identifying depression symptom severity. Neither testosterone nor free testosterone was associated with depression symptom severity in PCOS women after controlling for body dissatisfaction and age.
Sonographic findings of ovarian torsion in children

The clinical diagnosis of ovarian torsion is challenging and findings on pelvic sonography can be pivotal in making the correct diagnosis. To determine the sonographic characteristics in children of surgically and pathologically proven ovarian torsion. We performed a retrospective review of the sonograms and medical records of 41 patients with surgically and pathologically proven ovarian torsion at a pediatric hospital between 1994 and 2005. All sonograms were reviewed retrospectively by two pediatric radiologists with attention to the size, echotexture, location, presence of peripheral round cysts, and evidence of flow on Doppler sonography within the torsed ovary. The amount of free pelvic fluid was also recorded. The most common sonographic finding of ovarian torsion was an enlarged ovary/adnexal mass. All torsed adnexa were larger than the normal contralateral ovary, with the median volume 12 times that of the normal contralateral side. The majority (61%, n = 25) of the torsions occurred on the right. Color flow, either venous or arterial, was present in 62% (n = 21/34) of the torsed ovaries for which flow on Doppler sonography was documented. In 63% of the torsed ovaries (n = 26), the torsed adnexa appeared heterogeneous. Ovarian or para-ovarian pathology that may have acted as a potential lead point was present in 55% (n = 24) of torsed ovaries. The volume ratio of the torsed to normal ovary can predict the presence of an ovarian mass within the torsed ovary. In 70% of torsed ovaries with a volume ratio greater than 20, an ovarian mass was present, and in approximately 90% of those with a volume ratio less than 20, an internal mass was absent. An enlarged heterogeneous appearing ovary is the most common finding in ovarian torsion. The presence or absence of flow by Doppler sonography is not helpful in the diagnosis. The volume ratio of the torsed to the normal ovary can predict the presence of an internal mass within the torsed adnexa.
Fan Noise Reduction with Increased Bypass Nozzle Area

A model turbofan was tested in the NASA Glenn 9- by 15-ft low speed wind tunnel to explore far-field acoustic effects of a variable area bypass nozzle using three fixed nozzle flows. The baseline nozzle was sized to produce maximum stage performance at cruise condition. However, wind tunnel testing is conducted near sea level condition. Therefore, to simulate and obtain performance at other operating conditions, two additional nozzles were tested-one with +5% increase in weight flow (+5.4% area increase), sized to simulate the performance at the stage design point (takeoff) condition, and the other with a +7.5% increase in weight flow (+10.9% area increase) sized for maximum weight flow at sea level condition. Measured acoustic benefits with increased nozzle area showed effective perceived noise level reductions of 2 or more dB (for a 1500 ft fan flyover with a 3.35 scale factor) while the stage thrust actually increased by 2 to 3%. Noise reductions, principally in the level of broadband noise, were observed everywhere in the far field. Laser Doppler velocimetry measurements downstream of the rotor showed that the total turbulent velocity decreased with increasing nozzle flow, which may explain the reduced rotor broadband noise levels.
A Mother-Daughter Book Club: A Search for Intimacy

This study examines the nature of group interaction and response to texts in an African American, mother-daughter literature discussion group in a predominately White, Midwestern college town. The implications of this research for teachers and librarians include a discussion about the value of community and intergenerational literacy and adolescents’ need to share literacy events with adults from their own racialized group.
DNA arms do the legwork to ensure the directionality of λ site-specific recombination

The integrase protein of bacteriophage λ (Int) catalyzes site-specific recombination between λ phage and Escherichia coli genomes. Int is a tyrosine recombinase that binds to DNA core sites via a C-terminal catalytic domain and to a collection of arm DNA sites, distant from the site of recombination, via its N-terminal domain. The arm sites, in conjunction with accessory DNA-bending proteins, provide a means of regulating the efficiency and directionality of Int-catalyzed recombination. Recent crystal structures of λ Int tetramers bound to synaptic and Holliday junction intermediates, together with new biochemical data, suggest a mechanism for the allosteric control of the recombination reaction through arm DNA binding interactions.
Keynote 2: Content Delivery Acceleration

The Internet has evolved into a critical global infrastructure, affecting every facet of how we live and conduct business in all aspects while creating a myriad of entrepreneural possibilities and markets. It has become the platform through which content is pulled and pushed using various end devices. However, streaming content in a timely fashion does present a great challenge, and has a direct impact on the economic vibrance of content providers, service providers, and equipment vendors. This talk will discuss roadblocks in achieving rapid content delivery, cover the state of the art on accelerating content delivery, and present further challenges as the Internet continues to evolve. It will hopefully elicit more interest and efforts in advancing content delivery acceleration that will fuel further technological breakthroughs and economic growth.
The Fermilab RFQ Project

A 200 MHz Radio Frequency Quadrupole (RFQ) Linac is being designed and constructed for the acceleration of H- ions from 30 keV to 750 keV at a current of 30 mA. The RFQ is being developed as a possible replacement for the Fermilab preaccelerator and as an R and D project to investigate RFQ properties for future accelerators. The current status of the project is described.
Observation of the First-Order Stark Effect of Co on Ni(110)

The first-order Stark effect is observed for CO adsorbed on Ni(110). The Stark tuning rate is (1.1 \ifmmode\pm\else\textpm\fi{} 0.4) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}6}$ ${\mathrm{cm}}^{\ensuremath{-}1}$/(V/cm). The present measurement agrees with a model calculation. By electric field modulation of the resonant vibrational frequency of adsorbed molecules, the derivative vibrational spectrum can be measured. The spectra of CO on Ni(110) obtained are consistent with published electron-energy-loss spectra. The new technique is zero background, surface selective, and can be used in UHV or atmospheric pressure.
A simulation-based experimental investigation of supply/timing uncertainty in MRP systems

SUMMARY The uncertainty inherent in material requirements planning (MRP) systems is of two general types: demand uncertainty and supply uncertainty. Supply uncertainty is a result of late deliveries (timing) or order shrinkage (quantity) or both. The purpose of this paper is to examine the impact of operating policies on an MRP system given supply uncertainty resulting from timing factors, specifically the uncertainty caused by variability in the lead time of purchased parts. Experiments arc conducted to assess the impact of four factors: the amount of lead time variability, the amount of safety stock or safety lead time, the lot-size rule, and the holding cost and lateness penalty, on the total cost of the MRP system given supply/timing uncertainty. An MRP/Production simulator is employed to perform the experiments. Practical guidelines for the manager of an MRP system with supply/timing uncertainty are presented.
Empirical descriptors of unelevated MMPI profiles among chronic pain patients: A typological approach

The task of the clinician in evaluating the possible role of psychological factors in patients' pain disability is a most difficult one. This task becomes even more arduous when confronted with unelevated MMPI profiles from patients in whom physical findings are minimal or absent. The current study employs a multivariate, quantitative taxonomic procedure to delineate homogeneous subgroupings of chronic pain patients who meet this criterion. Subsequent analysis of base rate data for subgroups across a broad range of pain-related variables provide an actuarial basis of assessment of psychological factors within this population. Results indicate that of five subtypes identified, only one group of patients, who comprise 9% of the total sample, are likely to be free of significant psychological components in their pain behavior. Implications for clinical interpretation and future research are discussed.
epsilon expansion for the interfacial profile

The profile for the diffuse interface separating two coexisting phases in a scalar ($n=1$) system is calculated to first order in $\ensuremath{\epsilon}=4\ensuremath{-}d$. The lowest-order result is the renormalized Landau-Ginzburg expression. The $O(\ensuremath{\epsilon})$ correction is small even at $\ensuremath{\epsilon}=1$. A preliminary comparison with the experimental reflectivity measurements of Huang and Webb is made. Special difficulties involving the case $dl~3$ are discussed.
Expression, purification, crystallization and preliminary X-ray diffraction of a novel Nitrosomonas europaea cytochrome, cytochrome P460

Cytochrome P460 from Nitrosomonas europaea, a novel mono-heme protein containing an unusual cross-link between a conserved lysine and the porphyrin ring, has been recombinantly expressed and purified from Escherichia coli. The protein crystallizes readily and diffraction to 1.7 A has been obtained in-house. The crystals belong to the trigonal space group P31/221, with unit-cell parameters a = b = 53.3, c = 127.1 A, and contain one monomer in the asymmetric unit.
Operations Research in National Planning of Underdeveloped Countries

The problem of allocation of resources in development planning is treated in the form of a project-selection problem. The main features of the approach are a It provides for technological feasibility of the development program and satisfies the demand for final consumption at given prices at all points of time. b It yields a number of alternative programs that demonstrate the possible compromises between conflicting objectives of national planning Only “efficient” compromises are given. Thus, the decision-maker is furnished with the best possible basis for selection of a final compromise. c In selecting projects at a given point of time, it takes account of future opportunities for resource allocation.
Combined Wronskian solutions to the 2D Toda molecule equation

Abstract By combining two pieces of bi-directional Wronskian solutions, molecule solutions in Wronskian form are presented for the finite, semi-infinite and infinite bilinear 2D Toda molecule equations. In the cases of finite and semi-infinite lattices, separated-variable boundary conditions are imposed. The Jacobi identities for determinants are the key tool employed in the solution formulations.
High-Stakes Evaluation: Five Years Later

This article compares the International Nursing Association of Clinical Simulation and Learning (INACSL) memberships' thoughts and discussions about the use of simulation for high- stakes evaluation in nursing education to a similar town hall discussion, five years ago. Data on the topic of high-stakes testing were collected through a survey before the INACSL conference in June 2014. During a town hall meeting at the conference, the survey data was presented, attendees shared their thoughts and reacted to prepared comments by selected simulation leaders. Half of the town hall attendees favored high stakes testing before the survey findings and discussion. This number dropped to a third of the attendees by the end of the town hall meeting, by straw poll. The survey findings, a summary of the town hall discussion and final thoughts from simulation leaders are shared in this article.
Phase II study of 1,3‐Bis (2‐chloroethyl)‐1‐nitrosourea (BCNU, NSC #409962) with amphotericin B in bronchogenic carcinoma

Eighteen patients with unresectable bronchogenic carcinoma were treated with amphotericin B (7.5 mg/m2 on day 1, 15 mg/m2 on day 2, and 30 mg/m2 on days 3 and 4) plus BCNU (250 mg/m2 on day 4 following amphotericin B) with courses of therapy repeated every 8 weeks. All patients had metastatic disease, and 5 had received prior chemotherapy. Antitumor responses were observed in 8 patients. Six patients had partial responses (greater than 50% decrease in tumor area): 1 of 3 with small cell undifferentiated carcinoma, 1 of 4 patients with large cell undifferentiated carcinoma, 2 of 7 patients with adenocarcinoma, and 2 of 4 patients with epidermoid carcinoma. Two patients had objective improvement (25--50% decrease in tumor area): 1 with small cell undifferentiated carcinoma and 1 with epidermoid carcinoma. The median duration of remission was 3 months. The median duration of survival was 7 months for patients achieving partial response, and only 2 months for other patients. Myelosuppression was the dose limiting toxicity. One patient died with hepatocellular dysfunction, possibly related to BCNU. Transient hypotension was observed in 2 patients. We conclude that amphotericin B plus BCNU produced an encouragingly high response rate in patients with bronchogenic carcinoma, and that a randomized phase III trial is warranted to determine whether amphotericin B enhances the antitumor effects of nitrosoureas or other known antitumor agents.
Effect of Posterior Pituitary Polypeptides on the Flow of Urine after Injection in Lateral Ventricle of the Brain of a Cat

PREVIOUS observations in this laboratory have indicated that the injection of catecholamines and certain posterior pituitary polypeptides into the lateral ventricle of the cat is associated with characteristic and drug-specific pressor–depressor responses of the peripheral circulation1. During the course of these earlier experiments, it was noted that the intraventricular introduction of posterior pituitary polypeptides was followed by a prompt increase of flow in urine. Other observers have reported that the peripheral administration of various posterior pituitary preparations may, on occasion, be attended by a rise of urine flow consequent to a solute diuresis2,3. The present experiments were designed to define certain aspects of the ‘diuretic’ effect of these drugs during their central administration.
Moment discretization for ill-posed problems with discrete weakly bounded noise

We study moment discretization for compact operator equations in Hilbert space with discrete noisy data. Instead of assuming that the error in the data converges strongly to 0, we only assume weak convergence of the noise as introduced by Eggermont et al. (Inverse Probl 25:115018, 2009). A specific instance would be random noise. Under the usual source conditions, we derive optimal convergence rates for Phillips-Tikhonov regularization. The analysis is based on the comparison of the discrete problem with a semi-discrete version of the problem, which is made possible by virtue of a quadrature result in a suitable reproducing kernel Hilbert space. Some numerical results using strong and weak discrepancy principles for the selection of the regularization parameter are presented.
Consumption-Based Metrics: From Autos to IT

In comparing computing systems, IT professionals need the ability to both gauge energy efficiency and understand the magnitude of improvements in power consumption.
SIRT7 and hepatic lipid metabolism

The mammalian sirtuin family, consisting of NAD+-dependent class III histone/protein deacetylases, has 7 members (Greiss and Gartner, 2009). The physiological activities and pathological associations of sirtuins have been subjects of intense interest, as these are key regulators of metabolic processes that often impinge on health, aging and lifespan (Chalkiadaki and Guarente, 2012; Houtkooper et al., 2012). Perhaps the least investigated of the sirtuins is SIRT7. Like its more illustrious family member SIRT1, SIRT7 is nuclear localized. More specifically, it is enriched in the nucleolus (Ford et al., 2006; Barber et al., 2012; Ryu et al., 2014). Functionally, SIRT7 was first described by Guarente's group to be associated with active ribosomal RNA genes (or rDNA), where it interacts with RNA polymerase I and positively regulate its transcription activity (Ford et al., 2006). SIRT7 also interacts directly with the rDNA transcription factor upstream binding factor (UBF), and is responsible for resuming rDNA transcription, suppressed during cell division, upon mitotic exit (Grob et al., 2009). Proteomics analyses indicate that SIRT7 is also associated with several nucleolus-localized chromatin remodeling complexes (Tsai et al., 2012) and is involved in multiple components of pathways regulating ribosome biogenesis and protein translation (Tsai et al., 2014). Other recent findings have also implicated a role for SIRT7 in regulating aspects of cell survival in multiple tissue/organ systems. Like SIRT1, SIRT7 deacetylates p53, and in this regard appears to be cardioprotective. Sirt7 knockout mice were shown to exhibit reduced lifespan with frequent development of heart hypertrophy and inflammatory cardiomyopathy (Vakhrusheva et al., 2008). SIRT7 also deacetylates the acetylated lysine 18 of histone H3, and together with its association with E26 transformed specific (ETS) domain containing transcription factor ELK4 and perhaps other tumor suppressor factors, appears to promote a state of malignancy (Barber et al., 2012).
Structure development of polyamide‐66 fibers during drawing and their microstructure characterization

Structure development during drawing was studied for three sets of polyamide-66 (PA66) fibers with density, optical microscopy, wide-angle X-ray diffraction, and Fourier transform infrared spectroscopy. The crystallinity, estimated by density measurements, remained virtually constant with increasing draw ratios, indicating that stress-induced crystallization did not occur for the PA66 fibers drawn at room temperature, but there was a rapid transformation from a hedrite morphology to a fibrillar one. The absence of stress-induced crystallization differed from the behavior of polyamide-6, and this was attributed to the stronger hydrogen bonding between polyamide chains and the higher glass-transition temperature of PA66. Polarized infrared spectroscopy was used to measure the transition-moment angles of the vibrations at 936 and 906 cm -1 , which were found to be 48 and 60°, respectively. The crystalline orientation was estimated from the band at 936 cm -1 , and the increase with an increasing draw ratio was in close quantitative agreement with X-ray diffraction data; this showed that infrared spectroscopy could be used reliably to measure the crystalline orientation of PA66 fibers. Because we were unable to obtain the transition-moment angle of the amorphous bands, the amorphous orientation was obtained with Stein's equation. The amorphous orientation developed more slowly than the crystalline orientation, which is typical behavior for flexible-chain polymers.
Effect of devolatilization on nitric oxide formation from coal nitrogen

Abstract A simple heuristic model is proposed to explain the effect of devolatilization on both coal nitrogen conversion and NO formation. The model is cast into three temperature regimes, the intermediate regime II being initiated at T $ 1100 K . Regime II represents pyrolysis of repolymerized volatiles and thus accounts for the effects of temperature and temperature history on fuel nitrogen conversion. Based on this interpretation, NO formation results from volatiles combustion at high temperatures and char combustion at low temperatures ( T $ 1100 K ), in agreement with recent experimental data.
Redox cycling measurements of a model compound and dopamine in ultrasmall volumes with a self-contained microcavity device

Abstract A ∼13 μm diameter×8 μm deep cavity with integrated electrodes was used for redox cycling in ultrasmall volumes (∼1 nl) to selectively detect species that undergo reversible electron transfer reactions at electrodes in the presence of species that do not. Better sensitivities were obtained when the gold recessed microdisk (RMD), located at the bottom of the cavity, served as generator electrode and the gold tubular nanoband (TNB), located 4 μm away from the RMD and circling the cavity's wall, served as collector electrode, than for the reverse assignment. A gold electrode at the rim was the pseudoreference/auxiliary electrode. The signal at the collector electrode gave better detection limits than the amplified signal at the generator electrode for solutions of hexaamineruthenium(III) chloride and of dopamine, because charging current and faradaic current from interferents (e.g. oxygen and ascorbic acid) that undergo irreversible reactions were eliminated. The present work contrasts with other electrochemical detection methods for dopamine that require fast scan electronics or anionic coatings. It also contrasts with previously reported dopamine measurements that used redox cycling with larger working electrodes, external reference and auxiliary electrodes, and larger volumes. The detection limit for dopamine in the microcavity was 2 μM. By changing generator-collector spacings, the required performance at physiological concentrations should be possible.
Detection by the guinea pig of acoustic stimulation and of electrical stimulation of the brain

A threshold procedure using operant behavioral techniques with positive reinforcement was developed after initial efforts with avoidance behavioral procedures proved unsatisfactory. In the first of three experiments the operant threshold procedure was tested by determining masked auditory thresholds for trains of clicks. In a second experiment, similar techniques were used to measure thresholds for electrical stimulation of the brain. The last experiment, again an auditory problem, involved a determination of the absolute thresholds for trains of short noise bursts as a function of the time between bursts. Middle ear malfunction proved to be a more severe problem than had been anticipated on the basis of reports in the literature. The threshold procedure, however, seems to be adequate for determination of absolute or masked thresholds with auditory or electrical stimuli.
Some effects of type of group and sex on attitudes toward alcohol and alcoholism.

Attitudes toward alcohol use as well as alcoholism were compared across three groups: a community sample, a sample of graduate social work students, and a sample of prison inmates who were also members of A. A. The data were concerned with two attitudinal domains: attitudinal affect and cognition (belief). The results indicated more similarity between the community respondents and the prison inmates than for either with the student sample on both kinds of attitudinal measures. Only in terms of familiarity with drinking, drinkers, and treatment resources, were the inmates more similar to the students than to the community sample. Sex differences occurred within the community sample but generally not within the student sample. Attitudes toward alcohol use were consistent with attitudes toward alcoholism, in that both types of attitudes tended to be positive or negative, and familiarity with drinking and alcoholism was not related to attitudinal affect or cognition.
Bionomics of Carmenta haematica (Ureta) (Lepidoptera: Sesiidae) Which Attacks Snakeweeds (Gutierrezia spp) in Argentina

Abstract Adult Carmenta haematica are day-flying moths with orange (female) or clear (male) wings and a wingspan of 20 to 24 mm. Adults mated in bright sunlight. Females lived an average 2.3 days and laid an average 240 eggs each on stems and twigs of the host plant. Only 66% of the eggs hatched, mostly in the 4 h before dawn. Larvae had seven instars and reached ca. 24 mm long when full grown. Larvae entered the plant at the base of twigs or leaves or sometimes directly into the crowns. They were cannibalistic after the second instar and usually only one large larva occurred in a plant in the field. Larger larvae tunneled in the larger roots and made an exit hole in a large stem 5-8 cm above the crown where they pupated; a silken tube often protruded from the exit hole. The life cycle required ca. 139.5 days at 30°C: 15 days for the egg, 107 days for the larva, 16.5 days for the pupa, and 1 day for the adult to reach peak oviposition. Larval survival decreased below 0°C, and all larvae died after 1 day at −15°C. Larvae pupated in midsummer, adults emerged in late summer, and larvae developed during the fall, winter, and spring. The species was mostly univoltine, but the presence of some large larvae and pupae during most months indicated some variation. In the field, larvae infested 20 to 25% of medium-sized or large plants. At three locations of unusually high larval populations, the combined attack by C. haematica, other root borers, and drought killed most plants of Gutierrezia solbrigii Cabrera and Grindelia chiloensis Cabrera.