Parallel Pieces Research Articles

LEADING FOR EXPERTISE AS WELL AS EFFICIENCY

While leadership is usually a dispersed activity within schools, it is associated traditionally with headship. The role of headship has changed from a relatively benign first among equals to being the focus of accountability some way down the leadership pyramid in the English school system. This paper explores the challenges for head teachers at present and the styles of leadership that have evolved. It also proposes a way in which leadership of schooling can be rooted once more in the development and improvement of teaching and learning.The reference background for the paper comes from academic research, some of which provided the basis for ‘About Our Schools: Improving on Previous Best’1, as well as pragmatic research due to a regular presence in classrooms and schools.The article is intended to dovetail with the parallel piece in this journal by Tim Brighouse.

Late Byzantine sigillographic evidence from Cappadocia: lead seals from Kırşehir with a unique overstruck example

Abstract This short essay presents four 11th century A.D. Byzantine lead seals, all of which are stored in the local museum of Kırşehir, in ancient Cappadocia, which is located today in southeastern part of central Turkey. The Museum of Kırşehir owns a minor collection of at least 13 Byzantine lead seals and a selection of four unpublished seals is being presented, which were sold to the museum by local antique dealers from the Turkish provinces of Kırşehir and Aksaray. All of the seals are dated to the late 10th and early or mid-11th centuries A.D. No. 1 is an overstruck seal with a parallel piece which is a very unique specimen and raises some sigillographic and prosopographic questions. The three other seals are discussed with a focus to Byzantine dignitaries and their offices during the 11th century A.D. The descriptive discussion at the beginning briefly touches upon a some geographical and historical issues related to Kırşehir and its museum. This small collection of seals provides important evidence regarding the seal owners and the administration of the themes of Cappadocia and Charsianon on the eastern border of the Byzantine Empire. The paper offers a substantive analysis of the material, with a discussion and resolution of the sigillographic inscriptions and imagery.

Comparing bowel lengthening procedures: which, when, and why?

Purpose of reviewIntestinal failure secondary to short bowel syndrome is still a very serious condition. Treatment consists of parenteral nutrition to provide nutrients and maintain body weight. During the last decades, intestinal lengthening procedures have become more available. The goal of this review is to discuss the results of the literature on the most commonly performed intestinal lengthening procedures.Recent findingsLongitudinal Intestinal Lengthening, Serial Transverse Enteroplasty (STEP), and Spiral Intestinal Lengthening and Tailoring (SILT) are currently the most frequently reported intestinal lengthening procedures. The most recent literature of these procedures is described with respect to indication, technical details, complications, short and long-term outcome, and PN independence.SummaryOn the basis of indication, surgical complexity, complications, and clinical success, we conclude that the STEP procedure is probably the best choice for most centers.

An Unknown Work about Boris Godunov from the Post-Petrine Era

This article examines a new early manuscript containing two works by an unknown compiler in the 1730s: the story of the “tyrant Ivan the Terrible” and Boris Godunov “greedy” for autocratic power. The manuscript is kept in the State Archives of Ryazan Region as part of the collection of the Ryazan Provincial Scientific Archival Commission. The study demonstrates that its brief archaeographic description was given in 1892 by Aleksey Vasilyevich Selivanov, one of the founders of the archival commission in Ryazan. Relying on watermarks, he dates the collection to about 1727; in 2001, the manuscript was described anew in a review of the manuscript collection of the State Archives of Ryazan Region. The authors analyse the part of the manuscript collection containing an essay about Boris Godunov; this essay has not been introduced into scholarly circulation previously. The article reveals the compiler’s sources, which turn out to be translations of notes taken by foreigners about Russia between the sixteenth and seventeenth centuries, more particularly the works of Jerome Horsey, Jacob Ulfeldt, Adam Olearius, and some others. Also, the authors single out a whole series of parallel pieces of news from Jerome Horsey’s notes in a little-known version of the publication in Old German about Tsar Boris’ character. The authors focus on which notes would have been available to the alleged compiler of the collection in the seventeenth and early eighteenth centuries. The article contains data revealing the provenance of the work. Additionally, an assumption is made about the possible author of the published source, who was probably related to the circle of victims in the case of Artemy Volynsky. Finally, the appendix to the article contains the previously unpublished text of the manuscript about Boris Godunov.

Ist Andronikos Synadenos um die Mitte des 12. Jahrhunderts in normannische Gefangenschaft geraten?

Abstract The museum of Trebizond houses a seal with a metrical legend of special interest, documenting a Synadenos, who had for some time been in a Sicilian prison but managed to escape, and thanks the apostle Thomas for this liberation. He might be Andronikos Synadenos, the husband of Theodora Komnene, a daughter of Alexios I, who served with distinction as general and as diplomat. As a military commander he maintained order in several border regions such as Dyrrachion, Niš, Cyprus, and finally Trebizond. The legend of the seal enhances the information from his epitaph which is known from Codex Marc. gr. 574: Synadenos must have been taken prisoner as dux of Dyrrachion, either at the fights during the Second Crusade in 1147/49, or during the failed expedition to Southern Italy; it ended in 1158 by a peace treaty which included an exchange of prisoners. The seal stems from Synadenos’ last post in his military career as dux of Trapezunt (before 1179), since it was found there. A parallel piece, also published in this article, is nowadays in Dumbarton Oaks.

Liver-specific 3D sectioning molds for correlating in vivo CT and MRI with tumor histopathology in woodchucks(Marmota monax).

PurposeTo evaluate the spatial registration and correlation of liver and tumor histopathology sections with corresponding in vivo CT and MRI using 3D, liver-specific cutting molds in a woodchuck (Marmota monax) hepatic tumor model.MethodsFive woodchucks chronically infected with woodchuck hepatitis virus following inoculation at birth and with confirmed hepatic tumors were imaged by contrast enhanced CT or MRI. Virtual 3D liver or tumor models were generated by segmentation of in vivo CT or MR imaging. A specimen-specific cavity was created inside a block containing cutting slots aligned with an imaging plane using computer-aided design software, and the final cutting molds were fabricated using a 3D printer. Livers were resected two days after initial imaging, fixed with formalin or left unfixed, inserted into the 3D molds, and cut into parallel pieces by passing a sharp blade through the parallel slots in the mold. Histopathology sections were acquired and their spatial overlap with in vivo image slices was quantified using the Dice similarity coefficient (DSC).ResultsImaging of the woodchucks revealed heterogeneous hepatic tumors of varying size, number, and location. Specimen-specific 3D molds provided accurate co-localization of histopathology of whole livers, liver lobes, and pedunculated tumors with in vivo CT and MR imaging, with or without tissue fixation. Visual inspection of histopathology sections and corresponding in vivo image slices revealed spatial registration of analogous pathologic features. The mean DSC for all specimens was 0.83+/-0.05.ConclusionUse of specimen-specific 3D molds for en bloc liver dissection provided strong spatial overlap and feature correspondence between in vivo image slices and histopathology sections.

Was the later emperor Nikephoros Botaneiates the dux of Branicevo and Nis in the 1050s?

The mystery concerning a seal type erroneously interpreted in the past, could be solved with the help of a new parallel piece. The legend presents Nikephoros Botaneiates (who later became emperor) as magistros, bestes, bestarches , and doux of Nisos and Edesos for the middle of the 11th century (surely before 1061). This is the earliest mention of Nisos? upgrading from a strategis to a doukate (because of increasing difficulties with the kingdom of Hungary, the Pechenegs, and the archon of Diokleia). It is impossible to identify Edesos with one of the known toponyms of Edessa. We prefer to interpret Edesos as an (ephemeral?) Greek name of Branichevo (or esp. of its fortress). This town was the center of the northern part of the doukate of Nish, which reached till the Danube, and was of enormous strategic value. Two more seals mention Edesos as the seat of a topoteretes (the deputy commander of the doux) and of a metropolitan (perhaps of southern Hungary, during a period when Branichevo belonged to this kingdom). Finally some others seals from the region of Morava and Branichevo are discussed to illuminate the historical importance of this territory during the 11th and 12th centuries.

Perancangan dan Realisasi Pengatur Kadar Garam pada Aquarium Air Laut Berbasis Mikrokontroler ATMEGA16

<p><em>Aquarium sea water is a place to keep the fish that live in sea water. Setting levels of salt in the water is one of the problems that often occur. The intensity of the impact on the salt content of appetite that can lead to stress fish so that the fish will die. This thesis will be made the design and realization of the regulator saline seawater aquarium. The main characteristics of the sensor voltage values salinity is issued is inversely proportional to the value of the water levels are detected. If the salt content the higher the voltage value becomes lower. The sensors used in the form of parallel metal pieces which serves as a detector of the change in resistance. The output of the censor will be the input to the ADC. While calculations using ATmega16 microcontroller and the result is displayed on the LCD. If the value of the salt content of sea water aquarium turned microcontroller ATmega16 control valves salt water and fresh water faucet to stabilize the salinity at a certain value. With this thesis is realized, it is expected to reduce the problems in the maintenance of saltwater fish.</em></p>

Jane, Unlimited by Kristin Cashore

Reviewed by: Jane, Unlimited by Kristin Cashore Kate Quealy-Gainer, Assistant Editor Cashore, Kristin Jane, Unlimited. Dawson/Penguin, 2017 [464p] Trade ed. ISBN 978-0-8037-4149-2 $17.99 E-book ed. ISBN 978-0-698-15889-4 $10.99 Reviewed from galleys R* Gr. 8-12 Before Jane’s beloved aunt went to Antarctica, she made Jane promise that if she was ever invited to the island estate of Tu Reviens that she would go. Now, Aunt Magnolia is dead and Kiran Thrash, Jane’s old tutor and daughter of the owner of Tu Reviens, pops up out of the blue to ask Jane to a gala at the manor. Jane’s arrival on the island brings only more strangeness—Kiran’s acting weird, an enigmatic girl named Ivy may or may not be interested in Jane, there are rumors of a missing family on the estate, and then one of the family’s precious paintings is stolen. Readers will be just as puzzled as Jane as Cashore sets the pieces for a traditional murder mystery and then upends the board, changing the game and the rules completely as Jane’s story is split into five separate but parallel pieces, originating in the choice she makes out of five options (think Choose Your Own Adventure). Jane—or at least one of the Janes—dives into worlds that largely follow conventional genre tropes—mystery, thriller, horror, sci-fi, fantasy—but connecting threads run through each story, and readers will be doubling back to see the related elements. Each dimension of the multiverse is solidly constructed; various facets of characters play predominantly in one version while taking a backseat in others, giving each person intriguing dimensionality. This is a true tour de force of genre mashups, and it will satisfy a wide range of readers. [End Page 8] Copyright © 2017 The Board of Trustees of the University of Illinois

1D Chaos-based Image Encryption Acceleration by using GPU

Chaos-based image encryption algorithm is one of the most important methods that are considered as the main part of many structuring encryption systems. In this paper, a new implementation of One-Dimension (1D) chaos-based image encryption algorithm is presented using the parallelism features of GPU and CPU. In order to use the parallelism power of CPU, the parallel computing toolbox of MATLAB, provides efficient methods for Parallel Task Processing (PARFOR) and Parallel Data Processing (SPMD). For further improving the execution time of the algorithm, sequential partitions are performed on CPU and the parallel pieces are executed on the GPU. The results of serial and parallel implementation on the color images with different resolutions, using MATLAB parallelism methods show when the size of the pictures increase, the performance of the 1D chaos-based image encryption algorithm in parallel implementation by the both parallel task “PARFOR” and data processing “SPMD” methods, becomes better. Also, the results of the implementation illustrate that the execution time when PARFOR scheme is used becomes better when the image size is higher than a threshold. Furthermore, the results of Cuda and Visual C++ implementation on the color images with different resolutions show that the simulation time using Cuda C++ is almost three times better than visual C++. Total results of the comparison show that when a combination of CPU and GPU is used, the execution speed reached its best state. Because of accelerating the image encryption process using the power of CPU and GPU, the proposed implementation is suitable for the multimedia application systems.

Conventional single-port laparoscopic appendectomy for complicated appendicitis in children: Efficient and cost-effective.

BACKGROUND:Laparoscopic appendectomy (LA) is gradually gaining popularity among paediatric surgeons for complicated appendicitis. A retrospective study was conducted to compare conventional single port LA, multiport LA and open appendectomy (OA) for complicated appendicitis in children.PATIENTS AND METHODS:From January 1995 from December 2014, 1,408 patients (604 girls, 804 boys) underwent surgery for uncomplicated and complicated appendicitis. The patient characteristics, operation times, duration of hospitalization, operative costs, and postoperative complications were recorded. A 10-mm 0° scope with a parallel eye piece and an integrated 6 mm working channel were inserted through an 11-mm “conventional umbilical port” for single port LA.RESULTS:A total of 314 patients with complicated appendicitis (128 girls, 186 boys) underwent appendectomy. Among these, 102 patients (32.4%) underwent single port LA, 17 patients (5.4%) underwent multiport LA and 195 patients (62.1%) underwent OA. The hospital stay of the single port LA group was significantly less (3.88 ± 1.1) compared with multiport LA (5.41 ± 1.2) and OA groups (6.14 ± 1.1) (P < 0.001). Drain usage, wound infection and adhesive intestinal obstruction rates were significantly high in the OA group. There was no significant difference between the groups in postoperative intraabdominal abscess formation. Single-port LA performed for complicated appendicitis was cheaper compared with the other groups.CONCLUSIONS:The present study has shown that single-port LA for complicated appendicitis can be conducted in a reasonable operative time; it shortens the hospitalization period, markedly reduces postoperative wound infection and adhesive intestinal obstruction rates and does not increase the operative cost.

Ulisse all’Isola di Circe (Brussels 1650): Operatic Transformation of Classical Tradition and Dissolution of Stoic Problems

Abstract The present article is a close reading of the libretto of the first opera (drama musicale) staged in the Netherlands, in Brussels in 1650. The main point of interest is Ascanio Amalteo’s transformation or even breakaway from the classical tradition (esp. Homer and Ovid) to create a work with its own message, quite distant from classical texts but, paradoxically, approaching moral and psychological categories in Neo-Stoic mode. Perhaps it is not by chance that a parallel piece, Calderon’s second play on Circe (after the fiesta entitled El mayor encanto, amor, 1635), i.e. the auto sacramentale entitled Los encantos de la culpa (ca. 1650), is also a significant transformation of the motive done in the spirit of the Counter-Reformation. Both plays are the last allegorical interpretations of Circe myth and for the next two-hundred years the last important literary works about Ulysses.

Naturally Occurring Mutations in the MPS1 Gene Predispose Cells to Kinase Inhibitor Drug Resistance

Acquired resistance to therapy is perhaps the greatest challenge to effective clinical management of cancer. With several inhibitors of the mitotic checkpoint kinase MPS1 in preclinical development, we sought to investigate how resistance against these inhibitors may arise so that mitigation or bypass strategies could be addressed as early as possible. Toward this end, we modeled acquired resistance to the MPS1 inhibitors AZ3146, NMS-P715, and CCT251455, identifying five point mutations in the kinase domain of MPS1 that confer resistance against multiple inhibitors. Structural studies showed how the MPS1 mutants conferred resistance by causing steric hindrance to inhibitor binding. Notably, we show that these mutations occur in nontreated cancer cell lines and primary tumor specimens, and that they also preexist in normal lymphoblast and breast tissues. In a parallel piece of work, we also show that the EGFR p.T790M mutation, the most common mutation conferring resistance to the EGFR inhibitor gefitinib, also preexists in cancer cells and normal tissue. Our results therefore suggest that mutations conferring resistance to targeted therapy occur naturally in normal and malignant cells and these mutations do not arise as a result of the increased mutagenic plasticity of cancer cells.

Cholecystectomy Conducted with Single-Port Incisionless-Intracorporeal Conventional Equipment-Endoscopic Surgery

As the interest in minimal invasive surgery has turned to single-site access surgery, single-incision laparoscopic surgery (SILS) is becoming popular. Recently limited numbers of pediatric SILS series have been published. SILS needs nonconventional three-lumen ports and articulated working instruments. However, it is possible to perform single-port laparoscopic cholecystectomy using a single conventional port and conventional working instruments. We herein present our preliminary experience with cholecystectomy conducted with single-port incisionless-intracorporeal conventional equipment-endoscopic surgery. During December 2009-October 2012, 27 patients (12 boys, 15 girls) underwent single-port incisionless-intracorporeal conventional equipment-endoscopic cholecystectomy. A 10-mm 0° scope with a parallel eye piece and an integrated 6-mm working channel is inserted through an 11-mm "conventional umbilical port." Conventional working instruments were introduced through the integrated working channel. The fundus of the gallbladder is hung with a transabdominal sling suture. The infundibulum is retracted laterally to expose the triangle of Calot with a second transabdominal sling suture. Then the cystic duct and the artery are dissected and clipped separately. The gallbladder is dissected from the liver bed with monopolar cautery and extracted through the umbilicus. The patients were 5-17 years of age (mean, 10.7±4.6 years). Cholecystectomy was performed through a single port in 23 patients. A second port insertion was necessary in 4 patients. No preoperative or postoperative complications were encountered. Mean operating time was 74.3±13 minutes. Single-port incisionless-intracorporeal conventional equipment-endoscopic cholecystectomy is feasible in pediatric patients with reasonable operating times. It is a safe, cheap, and highly minimal invasive procedure with excellent cosmetic results.

Electro-thermal FEM simulations of the 13 kA LHC joints

The interconnections between the superconducting main dipole and main quadrupole magnets are made of soldered joints of two superconducting Nb–Ti cables embedded in a copper busbar stabilizer. The primary cause of the September 2008 incident in the LHC was a defect in an interconnection between two dipole magnets. Analyses of the incident show that possibly more defects might be present in the 13kA circuits, which can lead to unprotected resistive transitions. To avoid the reoccurrence of such an event, thorough experimental and numerical investigations have taken place to determine the safe operating conditions of the LHC. However to show measured curves is beyond the scope of this article. Furthermore, improvements in the design have been proposed in the form of additional parallel copper pieces, or shunts, which bridge the possible voids in the soldering and offer a bypass for the current in case of a quench.The purpose of this work is to support the design choices and to indicate the sensitivity to some of the free parameters in the design. Electro-thermal Finite Element Method (FEM) simulations are performed, making use of COMSOL Multiphysics. The use of FEM allows for a profound three-dimensional analysis and some interesting features of the shunted busbar can only be revealed this way. Especially current redistribution in the shunted area of the interconnect gives important insights in the problem. The results obtained using the model are very sensitive to the exact geometrical properties as well as to the material properties, which drive the Joule heating inside the interconnection. Differences as compared to a one-dimensional model, QP3, are presented. QP3 is also used for simulations of non-shunted busbar joints as well as shunted busbars. Furthermore, margins are given for the soldering process and the quality control of the shunted interconnections, since the contact area between the stabilizer pieces and the shunt is an important quality aspect during the manufacturing of a safe interconnection.

COMPLEX RELUCTANCE OF INHOMOGENEOUS EULER-CAUCHY TUBULAR FERRITES TAKING INTO ACCOUNT FREQUENCY-DEPENDENT COMPLEX PERMEABILITY

This paper presents a novel contribution to the analysis of skin-efiect like phenomena in radially inhomogeneous tubular geometries that flt in the category of Euler-Cauchy structures (ECS). The advantage of ECSs is that solutions for the electromagnetic fleld can be described by very simple closed form formulae. This work addresses the evaluation of the per unit length complex magnetic reluctance of tubular ferrites, taking into account that their complex permeability strongly depends on the frequency. The motivation for this research is linked up with the nascent theory of magnetic transmission lines (MGTL), where the wave guiding structure is made of a pair of parallel ferrimagnetic pieces, and whose performance is critically dependent on the complex magnetic reluctance of its component pieces. The analysis presented is mainly focused on high frequency regimes up into the GHz range.

Byzantine Lead Seals and Other Minor Objects from Mystras: New Historical Evidence for the Region of Byzantine Lakedaimon

Abstract This article presents the unpublished Byzantine lead seals from the archaeological collection of Mystras which now are stored in the depots of the Museum of Mystras. The first seal names a Michael Barys (late eleventh to early twelfth century). Probably he was bishop of Helos, known from another seal with metrical inscription which has not been fully read until now. – The second is a seal of an imperial protospatharios and tourmarches Spartaron Ioannes (mid-to-late tenth century). This military unit is attested by this seal and other three parallel pieces from the collection of Dumbarton Oaks. The name Spartaron and the fact that this seal was found in Sparta can be taken as evidence for the existence of a military unit which recalls the capabilities and fighting prowess of the Ancient Spartans. – The third lead seal mentions a vestarches and judge of the Velum, of Peloponnesos and Hellas (mid-to-late eleventh century) Petros Serblias. It describes an unknown stadium of the career of Petros Serblias, a person already known from other sources. At the end four metallic plates are presented, found near to the Upper Gate of the castle of Mystras, which are caps for bottles of theriaca, a well known antiseptic medicine from the apothecary of Due Mori in Venice (18th–19th century). Two of the seals were found in a recently unearthed Byzantine olive-press in a quarter of Byzantine Sparta where the city was expanded in the time between the tenth and twelfth century.

Examination of the resonator structure for a superconducting transmitting filter

We studied a resonator structure to reduce the current concentration at outer edge of a microstrip line. We developed a new microstrip line consisting of many parallel pieces separated by gaps. Electromagnetic simulations indicated that the current concentration of the outer edge of the sliced microstrip line was lower than that of a conventional microstrip line. We made a 3-pole filter of YBCO thin film using a sliced microstrip line and measured its power handling capability. The power handling capability was better than that of a conventional filter. We also examined other resonator structures to increase the power handling capability, for example, an S-type structure and a wide hair-pin structure. These resonator shapes had better power handling characteristics than a conventional microstrip resonator.

Sceaux de la collection Khoury

Summary. — The forty-nine seals of the Khoury collection, for the most part from Antioch, form a supplement to the collection of the archeological museum of Hatay (Antioch). They are all unpublished, though some have been known through parallel pieces. Their chronological distribution corresponds to the period of Byzantine rule over the metropolis of Northern Syria. These pieces bring new elements to our knowledge of local society.

Structure–function relationships in the integument of Salamandra salamandra during ontogenetic development

Morphological, cytological and transport properties of the integument of Salamandra salamandra were investigated during natural ontogenetic development, from birth to adult. Three stages were operationally defined: I, larvae, from birth to metamorphosis; II, metamorphosis (judged externally by the colour change and loss of the gills); and III, post-metamorphosis to adult. Pieces of skin were fixed at various stages for immunocytochemical examinations, and the electrical properties were investigated on parallel pieces. Distinct cellular changes take place in the skin during metamorphosis, and lectin (PNA, WGA and ConA) binding indicates profound changes in glycoprotein composition of cell membranes, following metamorphosis. Band 3 and carbonic anhydrase I (CA I) were confined to mitochondria-rich (MR)-like cells, and were detected only in the larval stage. CA II on the other hand, was detected both in MR-like and in MR cells following metamorphosis. The electrical studies show that the skin becomes more tight (transepithelial resistance increases) upon metamorphosis, followed by manifestation of amiloride-sensitive short-circuit current ( I sc) indicating that functional Na + uptake has been acquired. The skin of metamorphosed adults had no finite transepithelial Cl – conductance, and band 3 was not detected in its MR cells. The functional properties of MR-like and MR cells remain to be established.