bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coordinated pricing and inventory control problems with capacity constraints and fixed ordering cost
Authors: Zhang Ju‐Liang , Chen Jian , Lee Chung‐Yee 
Published: July 2012

AbstractThis article addresses a single‐item, finite‐horizon, periodic‐review coordinated decision model on pricing and inventory control with capacity constraints and fixed ordering cost. Demands in different periods are random and independent of each other, and their distributions depend on the price in the current period. Each period's stochastic demand function is the additive demand model. Pricing and ordering decisions are made at the beginning of each period, and all shortages are backlogged. The objective is to find an optimal policy that maximizes the total expected discounted profit. We show that the profit‐to‐go function is strongly CK‐concave, and the optimal policy has an (s,S,P) ‐like structure. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012
Efficiency of equilibria in restricted uniform machine scheduling with total weighted completion time as social cost
Authors: Correa José R. , Queyranne Maurice 
Published: July 2012

AbstractIn the last decade, there has been much progress in understanding scheduling problems in which selfish jobs aim to minimize their individual completion time. Most of this work has focused on makespan minimization as social objective. In contrast, we consider as social cost the total weighted completion time, that is, the sum of the agent costs, a standard definition of welfare in economics. In our setting, jobs are processed on restricted uniform parallel machines, where each machine has a speed and is only capable of processing a subset of jobs; a job's cost is its weighted completion time; and each machine sequences its jobs in weighted shortest processing time (WSPT) order. Whereas for the makespan social cost the price of anarchy is not bounded by a constant in most environments, we show that for our minsum social objective the price of anarchy is bounded above by a small constant, independent of the instance. Specifically, we show that the price of anarchy is exactly 2 for the class of unit jobs, unit speed instances where the finite processing time values define the edge set of a forest with the machines as nodes. For the general case of mixed job strategies and restricted uniform machines, we prove that the price of anarchy equals 4. From a classical machine scheduling perspective, our results establish the same constant performance guarantees for WSPT list scheduling. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012
Parvovirus B19 in pregnancy: possible consequences of vertical transmission
Authors: Puccetti C. , Contoli M. , Bonvicini F. , Cervi F. , Simonazzi G. , Gallinella G. , Murano P. , Farina A. , Guerra B. , Zerbini M. , Rizzo N. 
Published: July 2012

ABSTRACTObjectiveThe aim was to determine the outcome of pregnancies complicated by maternal Parvovirus B19 (B19) infection.MethodAmong 175 pregnant women referred to our clinic because of suspicion of a B19 infection, 63 with confirmed laboratory diagnosis of acute/recent B19 infection were followed up by ultrasound and Doppler measurement of the middle cerebral artery peak systolic velocity.ResultsThe vertical transmission rate was 31.7% (20/63). Of the 20 infected, 8 had hydrops, 1 had signs suggestive of meconium peritonitis and 1 had an isolated hydrothorax. Three fetuses presenting with hydrops were treated with intrauterine blood transfusion. Two of them died while the last showed resolution of anemia.Among the five untreated hydropic fetuses, one presented with mild signs that resolved spontaneously, two died at 16 and 17 weeks of gestation and two had also cardiomegaly and the parents opted for elective termination of pregnancy.All the anemic fetuses had middle cerebral artery peak systolic velocity values more than 1.8 multiples of the median. No stillbirth occurred.ConclusionsThe outcome of uncomplicated cases with B19 infection is good. In the presence of hydrops prognosis was very poor. It seems therefore logical to attempt to pick up this ominous signs early. © 2012 John Wiley & Sons, Ltd.
Measuring online endorsement of prescription opioids abuse: an integrative methodology
Authors: McNaughton Emily C. , Black Ryan A. , Zulueta Mirella G. , Budman Simon H. , Butler Stephen F. 
Published: July 2012

ABSTRACTPurposeThe ability to track prescription opioid abusers' endorsement of compounds may be valuable in forecasting abuser's preferences. We developed a metric, referred to as the Endorsement Ratio (ERo), to explore the feasibility of quantifying the sentiment expressed by opioid abusers who post online about prescription opioid products.MethodsInternet posts written between April 1, 2010 and March 31, 2011 and related to six prescription opioid compounds (oxycodone ER, hydrocodone, hydromorphone, oxymorphone, morphine ER, and tramadol) were identified and qualitatively coded. A mixed effects multinomial logistic regression was employed to model the probability of observing endorsing, discouraging, mixed, or unclear messages per compound. Endorsement‐to‐discouragement ratio (ERo) and ratio of endorsement‐to‐discouragement ratios (RERo) were estimated for each compound.ResultsIn the study sample of 12 838 Internet posts, a ranking of endorsement could be established, with oxymorphone as most endorsed (ERo = 7.39), followed by hydromorphone (ERo = 5.02), hydrocodone (ERo = 3.53), oxycodone ER (ERo = 3.23), morphine ER (ERo = 2.71), and tramadol (ERo = 1.76). Relative rankings of products required that route of administration be considered.ConclusionsThis study expands existing Internet monitoring approaches by developing a metric to estimate the endorsement of specific prescription opioid compounds as viewed through the lens of Internet communities. Route of administration must be taken into account when examining preferences of drug abusers for various products. This study did not assess whether the novel metric is valid with respect to classification of abuse rates of different drugs. Further studies examining external validation studies are warranted. Copyright © 2012 John Wiley & Sons, Ltd.
Preservice teachers' coping styles and their responses to bullying
Authors: Kahn Jeffrey H. , Jones Jayme L. , Wieland Amy L. 
Published: July 2012

AbstractThe literature suggests that teacher responses to bullying are a function of the type of aggression (overt vs. relational), the gender of the children involved, and characteristics of the teacher. We extended the literature by examining teachers' dispositional coping styles as a predictor of their responses to bullying. Preservice teachers (N = 97) completed a measure of coping styles and then responded to eight vignettes showing overt or relational aggression occurring among boys or girls. Overt aggression was viewed as a bigger problem than relational aggression, and teacher interventions were deemed more necessary for overt than relational aggression. Preservice teachers who typically use more active coping, less denial coping, and less self‐blame responded more actively to bullying, especially in response to relational aggression among boys. These findings point to the need to consider teacher coping styles when working with them to intervene effectively in responding to bullying. © 2012 Wiley Periodicals, Inc.
Teachers' perceptions of parent–teacher alliance and student–teacher relational conflict: Examining the role of ethnic differences and “disruptive” behavior
Authors: Thijs Jochem , Eilbracht Lizzy 
Published: July 2012

AbstractAlthough parents' relationships with teachers are considered to be an important aspect of parental school involvement, few studies have examined their implications for students' school adjustment. The present study provided further insight into the relevance of teachers' perceptions of the parent–teacher relationship by examining their link to teachers' perceptions of student–teacher relational conflict. Participants were 36 native Dutch teachers who rated their relationships with 230 Grade 4–6 students (59 Turkish–Dutch, 62 Moroccan–Dutch, and 109 native Dutch) and their parents. It was found that the perceived parent–teacher relationship could explain ethnic differences in student–teacher conflict that were previously unaccounted for. Moreover, the effect of the parent–teacher relationship was most pronounced for students with more perceived inattention/hyperactivity problems. Results are discussed in light of their theoretical importance and practical implications. © 2012 Wiley Periodicals, Inc.
Quality of life and sexual functioning in young women with early‐stage breast cancer 1 year after lumpectomy
Authors: Safarinejad Mohammad Reza , Shafiei Nayyer , Safarinejad Shiva 
Published: July 2012

AbstractBackgroundThe breast cancer (BC) and its treatment (mastectomy, radiotherapy, and chemotherapy) have considerable psychosexual impacts on women's life. This study evaluated sexual functioning, quality of life, and self‐esteem in young women with early‐stage BC.MethodsA total of 186 women with stage I or II BC and 204 age‐matched controls aged 25–45 years were recruited. To be eligible, patients had to be disease‐free and sexually active. They also had to have undergone lumpectomy at least 1 year previously and have completed chemotherapy and/or radiotherapy. Subjects completed Female Sexual Function Index, Short Form‐36 Health Survey, and Rosenberg Self‐Esteem questionnaire. Serum sex hormones were also measured in all subjects.ResultsOf BC patients, 57% experienced lubrication disorder followed by satisfaction disorder in 53.8%, desire disorder in 42.5%, and arousal disorder in 37.0% (all patients vs. healthy controls <0.01). Hormone‐treated patients were more likely to report sexual dysfunctions (p = 0.006). The radiotherapy + chemotherapy + hormone therapy was associated with an about sixfold increased risk of lubrication and satisfaction disorders (adjusted odds ratios = 6.4, 95%CI = 4.6–12.6, and adjusted odds ratios = 5.7, 95%CI = 3.4–11.4, respectively). Cancer patients had lower scores for all components of the Short Form‐36 Health Survey, except for pain. Levels of self‐esteem did not differ significantly between the two groups.ConclusionsYoung lumpectomized BC women reported a marked impairment in sexual functioning and quality of life.Copyright © 2012 John Wiley & Sons, Ltd.
A real‐time algorithm for nonlinear infinite horizon optimal control by time axis transformation method
Authors: Marutani Jun , Ohtsuka Toshiyuki 
Published: July 2012

SUMMARYIn this paper, a real‐time algorithm is proposed for nonlinear infinite horizon optimal control. The time axis transformation of the horizon is combined with receding horizon control to realize state feedback by numerical optimization over an infinite horizon. Moreover, a descriptor equation is utilized in place of a state equation to avoid the numerical difficulty due to the infinite horizon. Then a nonlinear equation is obtained to determine the trajectories of the state, costate, and control input over the transformed horizon. The nonlinear equation is solved at each sampling time by a continuation method to trace a time‐varying solution. The proposed algorithm is applied to nonlinear systems to evaluate its accuracy and effectiveness. Copyright © 2012 John Wiley & Sons, Ltd.
New approach to H ∞  filtering of two‐dimensional T‐S fuzzy systems
Authors: Li Lizhen , Wang Weiqun , Li Xiaofeng 
Published: July 2012

SUMMARYThis paper is concerned with the H ∞  filtering problem for two‐dimensional T‐S fuzzy systems. Sufficient conditions for the solvability of this problem are obtained by using basis‐dependent Lyapunov functions. By considering the measured output as an independent variable with respect to the state variable and the disturbance input, a new method for designing two‐dimensional H ∞  filters is presented. Moreover, it has been shown that the proposed method is equivalent to the conventional one. Therefore, the proposed method does not lead to any conservativeness that may be caused by separately considering the measured output, the state variable, and the disturbance input. In converting the parameterized linear matrix inequalities (PLMI) into LMI constraints, attention is focused on the reduction of the number of LMI‐based conditions. On the basis of the proposed theorem, the number of LMI‐based conditions is reduced to r3 from r3(r + 1)2 ∕ 4 by the conventional method. Thus, the computational advantage is obvious for fuzzy systems with large number of fuzzy rules. Simulation results have demonstrated the effectiveness of the proposed method. Copyright © 2012 John Wiley & Sons, Ltd.
Fabrication of Nanofluidic Biochips with Nanochannels for Applications in DNA Analysis
Authors: Xia Deying , Yan Juchao , Hou Shifeng 
Published: July 2012

AbstractWith the development of nanotechnology, great progress has been made in the fabrication of nanochannels. Nanofluidic biochips based on nanochannel structures allow biomolecule transport, bioseparation, and biodetection. The domain applications of nanofluidic biochips with nanochannels are DNA stretching and separation. In this Review, the general fabrication methods for nanochannel structures and their applications in DNA analysis are discussed. These representative fabrication approaches include conventional photolithography, interference lithography, electron‐beam lithography, nanoimprint lithography and polymer nanochannels. Other nanofabrication methods used to fabricate unique nanochannels, including sub‐10‐nm nanochannels, single nanochannels, and vertical nanochannels, are also mentioned. These nanofabrication methods provide an effective way to form nanoscale channel structures for nanofluidics and biosensor devices for DNA separation, detection, and sensing. The broad applications of nanochannels and future perspectives are also discussed.
Factors influencing individual management preferences for facilitating adaptation to climate change within the National Wildlife Refuge System
Authors: Magness Dawn R. , Lovecraft Amy Lauren , Morton John M. 
Published: July 2012

AbstractNational Wildlife Refuge System policies reference both historical condition and naturalness, but these concepts may not be valid management goals in a world with rapid climate change. Currently, within the refuge system, managers and biologists can individually decide whether management actions to maintain historical condition (retrospective) or actions to promote and enhance future condition (prospective) are appropriate. In February 2008, we surveyed 203 refuge system managers and biologists (via email) about climate change and management strategies to facilitate adaptation to climate change. Our goal was to explore factors that influence preference for retrospective or prospective strategies. Most managers and biologists (76%) believe that climate change has already influenced their refuge, but land‐use change and invasive species were considered more important landscape drivers. We did not find evidence that refuge purpose or inclusion of climate change in planning documents influenced individual preferences about strategies to facilitate adaptation. However, managers and biologists who conceptualize climate change as anthropogenic in origin were more likely to prefer retrospective strategies. Written responses indicate that managers and biologists prefer historical condition, but believe that retrospective strategies will be costly or impossible. Written comments also indicate that managers and biologists prefer strategies that allow species to adapt naturally and without intervention. We conclude that land management agencies need to provide the rationale for how climate change should be conceptualized in the short and long terms. Explicitly addressing conservation values may help to refine agency priorities in a rapidly changing world and to build the consensus necessary to strategically coordinate management across individual units in conservation reserves. © 2012 The Wildlife Society.
Private landowner interest in market‐based incentive programs for endangered species habitat conservation
Authors: Rodriguez Shari L. , Peterson M. Nils , Cubbage Frederick W. , Sills Erin O. , Bondell Howard D. 
Published: July 2012

AbstractMore than 75% of endangered species in the United States rely on private lands for habitat. Although this habitat has long been regulated under the Endangered Species Act, there is now broad agreement that economic incentives are also needed for effective protection on private land. Many different mechanisms for incentive programs have been proposed and tested. For example, recovery credit systems use term‐duration market‐based contracts to engage landowners in endangered species conservation. We examined how market‐mechanism design influences interest in endangered species habitat conservation using a survey of North Carolina Farm Bureau county advisory board members in 93 of the 100 North Carolina counties (n = 735) in 2009. Respondents preferred contracts (57% were interested) over easements (39% were interested). Endangered species conservation ranked low in importance relative to other conservation issues, but 45% of respondents were interested in contracts to conserve endangered species habitat on their property. The preferred contract duration was 10 years, and respondents preferred state‐ and agricultural‐related organizations over federal and wildlife conservation‐related organizations for managing contracts. Younger respondents, respondents who had previously participated in conservation programs, respondents who perceived endangered species conservation as important, and respondents who had lower property‐rights orientation scores, were most likely to be interested in contracts to restore and maintain endangered species habitat on their lands. Our results suggest that market mechanisms could drive down costs and drive up durations for endangered species habitat conservation contracts. Further, term contracts may prove critical for endangered species conservation efforts that require high levels of landowner support and spatial flexibility within relatively short‐time frames. © 2012 The Wildlife Society.
Optimal attractants to increase visits by clouded leopards to remote‐camera sets
Authors: Tanner Dawn , Zimmerman Patrick 
Published: July 2012

AbstractClouded leopards (Neofelis nebulosa) are rare Southeast Asian felids; they are almost exclusively studied in the wild using remote cameras. These studies identify presence–absence and estimate abundance of clouded leopards to improve conservation efforts. Photographing clouded leopards at remote‐camera sites requires extensive time in the field. Improving success of remote‐camera sets could improve knowledge about population dynamics and identify critical conservation areas for these animals. This study tested a range of visual and scent attractants widely used to attract felids and other carnivores to remote‐camera sites. The goal was to identify attractants that might best attract clouded leopards. During August 2011, we used captive animals (n = 9) at the Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA, to test attractants. Turkey feathers and U.S. Department of Agriculture scent disks were the best‐performing visual and scent attractants (P < 0.05 vs. control); a combination of the two was not significantly different from either individual treatment (P > 0.05). Turkey feathers and scent disks are attractants that are highly effective in a controlled setting and should be field‐tested; it appears that they may significantly improve success of remote‐camera sets targeting clouded leopards. © 2012 The Wildlife Society.
trans Influence and Steric Effect on the Distortions in Planar NiS4, NiS2PN, and NiS2P2 Chromophores
Authors: Srinivasan Subramaniam , Ramalingam Kuppukkannu , Rizzoli Corrado 
Published: July 2012

AbstractThe planar diamagnetic complexes [Ni(achdtc)2] (1),[Ni(achdtc)(PPh3)(NCS)] (2), and [Ni(achdtc)(PPh3)2]ClO4·0.5EtOAc (3) (achdtc = allylcyclohexylcarbodithioate) were prepared, characterized by elemental analysis, electronic, IR, NMR (1H, 13C, and 31P) spectroscopy and the crystal structures were determined by single‐crystal X‐ray crystallography. The characteristic thioureide bands occur at 1478, 1503, and 1507 cm–1 for 1, 2, and 3, respectively and the corresponding 13C chemical shifts are observed at 207.67, 204.16, and 202.31 ppm. 31P chemical shifts are observed at δ = 29.24 and 22.73 ppm for 2 and 3, respectively, indicating a strong interaction. Electronic spectral bands are observed at 480, 483, and 475 nm for 1, 2, and 3, corresponding to d → dxy/d transitions. Ni–S distances are asymmetric. The trans influence of PPh3 elongates the Ni–S bonds. The decrease in the S–Ni–S bite angle in 2 [78.80(16)°] and in 3 [78.36(2)°] compared to that observed in 1 [79.42(3)°] is due to the steric crowding of PPh3 around the central metal atom. A comparison of the bond parameters of compounds 1–3 shows a change in the arrangement from a planar NiS4 chromophore to distorted planar NiS2P2 chromophores. The observed distortion from planar to tetrahedral arrangement is influenced by the bulky triphenylphosphine ligand.
[VO(dien)]2GeS4: Solvothermal Synthesis and Crystal Structure with an Ortho‐Thiogermanate as Tetradentate Ligand
Authors: Wang Jing , Näther Christian , Djamil John , Bensch Wolfgang 
Published: July 2012

AbstractThe compound [VO(dien)]2GeS4 (1, dien = diethylenetriamine) features an ortho‐thiogermanate anion [GeS4]4–, which acts as tetradentate ligand joining [VO(dien)]2– complexes. The compound was obtained under solvothermal conditions crystallizing in thenon‐centrosymmetric orthorhombic space group Pna21 with a =19.8310(11), b = 8.0814(5), c = 12.0889(9) Å, V = 1937.4(2) Å3 and Z = 4. The V4+ cations are in a distorted octahedral environment of a tridentate dien molecule, one oxygen atom and two sulfur atoms from the [GeS4]4– anion. A three‐dimensional network is generated by hydrogen bonding interactions.
Regenerative Surgery: Tissue Engineering in General Surgical Practice
Authors: Wong Victor W. , Wan Derrick C. , Gurtner Geoffrey C. , Longaker Michael T. 
Published: July 2012

AbstractTissue engineering is a broad interdisciplinary field that aims to develop complex tissue and organ constructs through a combination of cell‐, biomaterial‐, and molecular‐based approaches. This approach has the potential to transform the surgical treatment for diseases including trauma, cancer, and congenital malformations. A fundamental knowledge of key concepts in regenerative medicine is imperative for surgeons to maintain a leading role in developing and implementing these technologies. Researchers have started to elucidate the biologic mechanisms that maintain organ homeostasis throughout life, indicating that humans may have the latent capacity to regenerate complex tissues. By exploiting this intrinsic potential of the body, we can move even closer to developing functional, autologous replacement parts for a wide range of surgical diseases.
JOINT UNIVERSALITY OF HURWITZ ZETA-FUNCTIONS
Authors: LAURINČIKAS ANTANAS 
Published: July 2012

AbstractIt is well known that Hurwitz zeta-functions with algebraically independent parameters over the field of rational numbers are universal in the sense that their shifts approximate simultaneously any collection of analytic functions. In this paper we introduce some classes of universal composite functions of a collection of Hurwitz zeta-functions.