Optical phase cloaking of 700-nm light waves in the far field by a three-dimensional carpet cloak

Transformation optics is a design tool that connects geometry of space and propagation of light. Invisibility cloaking is a corresponding benchmark example. Recent experiments at optical frequencies have demonstrated cloaking for the light amplitude ("ray cloaking"). In this Letter, we demonstrate far-field cloaking of the light phase ("wave cloaking") by interferometric microscope-imaging experiments on the previously introduced three-dimensional carpet cloak at 700-nm wavelength and for arbitrary polarization of light

Evaluation of automated business process optimization

Today's highly competitive markets tend to favor enterprises, in which business processes are analyzed and optimized regularly, in order to be able to operate in accordance with their business goals. The variety of business process management (BPM) methods applied for this purpose, since the emergence of the concept of business reengineering in the 1990s, ranges from incremental adjustments to radical restructuring. In combination with contemporary workflow automation technology, modern redesign methods are powerful tools for enhancing business performance, enabling companies to maintain a winning margin. Optimization methods that deliver sustainable results using evolutionary approaches, however, are nowadays becoming increasingly popular - once again, two decades after continuous improvement paradigms had almost completely been abandoned in favor of revolutionary process redesign. This diploma thesis explores one such evolutionary BPM approach employed in the deep Business Optimization Platform (dBOP), a research prototype, which assists analysts with the selection and application of suitable process improvement techniques. The present work demonstrates an evaluation of dBOP with the help of simulated business scenarios based on real case studies, and documents the types of optimization patterns most readily applied through automated process redesign. For this purpose two business processes, one from a car rental enterprise and one from a health insurance company, are modeled and deployed on a process server, and executed using web services and sample data warehouses based on actual statistics. These processes are then analyzed with dBOP, in order to compare its optimization recommendations with those expected from a human analyst's perspective

Optical Microscopy of 3D Carpet Cloaks : Ray-Tracing Calculations

In a recent publication (T. Ergin et al., Science 328, 337 (2010)), three-dimensional broadband dielectric carpet cloaks have been fabricated and experimentally characterized by optical bright-field and dark-field microscopy using unpolarized light from an incandescent lamp. A direct comparison with theory has not been provided so far. In the present work, we treat the carpet cloak as well as the entire optical microscope within the ray-optics approximation and the cloak within the effective-medium approximation. We find good qualitative agreement between experimental results and our calculations

Gebelikte Akut Karın Nedeni Olarak Miyom Torsiyonu

Gebelikte akut karın tablosu, anatominin ve fi zyolojinin değişmesi nedeniyle, tanı ve tedavi basamaklarında klinik zorluk yaratmaktadır. Belirtiler değişmekte veya silikleşmekte, laboratuar incelemelerin sonucu gebelikteki fi zyolojik yanıtlarla karışabilmektedir. Karın ağrısı, obstetrik nedenlerle olabileceği kadar karın içi ve pelvis içi organlar nedeniyle de gelişebilmektedir. Leiomiyomlar geç üreme dönenimde sık rastlanan benin jinekolojik tümörlerdir. Çoğunlukla belirti vermezler. Miyom dejenerasyonu, saplı miyomun torsiyone olması veya kitle etkisine bağlı uterusun torsiyonuna yol açarak gebelikte ağrıya yol açabilir. Gebelikte akut karın tanısı ile cerrahi uygulanan torsiyone miyom olgusu tartışılmıştır. G1 P0 31 yaşında hasta, yirmi birinci gebelik haftasında karın ağrısı ile başvurdu. Fizik muayenede batın sağ kadranda defans ve rebaund mevcuttu. Ultrasonografi de ve Doppler incelemede her iki over normal olarak değerlendirildi. Akut appendisit ön tanısı ile eksploratif laparotomi uygulandı. İntraoperatif gözlemde uterus sağ lateral yüzde ince pediküllü subserozal miyomun torsiyone olduğu tespit edildi. Miyomektomi uygulandı. Gebelik normal seyrinde takip edildi

İlköğretim öğrencilerinin yaşam kalitesinin toplumsal sınıf değişkeni açısından incelenmesi: Aydın ilinde betimsel bir çalışma

The main purpose of this study is to examine 4th and 5th grade childrens’ quality of life in terms of their social class indicators. Child’s Quality of Life Inventory was used as a data gathering tool in this study. Data were obtained from the study was analyzed in accordance to information about schools’ social economic statues that gathered from The National Education Directorship in Aydın. Number, percentage, frequency, and chi square were used as a statistical method in present study. The finding of the study shows that life quality of children could be mainly revealed with socio economic statues of them. Also the study reveals the most of the children from low socio economic statue are working as a child labor for contributing to the family budget. The most of the families involved in the study explained that they were willing to send their children to the school after the compulsory elementary education. Beside of this finding, some of the families in the sample % 11,9  (n=16)  stated that they were reluctant to send their children to the school after the elementary education. The finding of the study can be considered in terms of public health, school health and general well-being statue of the children in Turkey. ÖzetBu çalışmanın temel amacı Aydın İlinde, ilköğretim 4. ve 5. sınıf öğrencilerinin yaşam kalitesinin sosyo-ekonomik düzey açısından incelenmesidir. Araştırmada veri toplama aracı olarak araştırmacılar tarafından geliştirilen “Çocuk Yaşam Kalitesi Tarama Envanteri” kullanılmıştır. Çalışmada elde edilen veriler, Aydın İl Milli Eğitim Müdürlüğü’nden alınan bilgiler doğrultusunda belirlenen alt, orta ve üst sosyo-ekonomik düzeylerden toplam 6 ilköğretim okulunun 4. ve 5. sınıf öğrencilerinden toplanarak bu veriler üzerinde sayı, yüzde, frekans ve ki kare analizleri gerçekleştirilmiştir. Araştırmanın bulguları, çocuk yaşam kalitesinin büyük oranda sosyo-ekonomik düzey ile açıklanabileceğini göstermektedir. Alt sosyo ekonomik düzeyden çocuklar okul dışında gelir getirici bir iş yaparak aile bütçesine katkıda bulunmaktadırlar. Sosyo-ekonomik düzeyi ne olursa olsun ailelerin çoğunluğu çocuklarının eğitimlerine ilköğretimden sonra da devam etmelerini isterken, alt sosyo-ekonomik düzeydeki okullara devam eden öğrenci ailelerinin %11,9 (n=16)’u “çocuğunun ilköğretimden sonra eğitimine devam etmemesini istemektedir. Tüm bu bulgular, toplum sağlığı, okul sağlığı ve çocuğun genel iyi olma durumu üzerine önemli önlemleri gerekli kılmaktadır.Bu çalışmanın temel amacı Aydın İlinde, ilköğretim 4. ve 5. sınıf öğrencilerinin yaşam kalitesinin sosyo-ekonomik düzey açısından incelenmesidir. Araştırmada veri toplama aracı olarak araştırmacılar tarafından geliştirilen “Çocuk Yaşam Kalitesi Tarama Envanteri” kullanılmıştır. Çalışmada elde edilen veriler, Aydın İl Milli Eğitim Müdürlüğü’nden alınan bilgiler doğrultusunda belirlenen alt, orta ve üst sosyo-ekonomik düzeylerden toplam 6 ilköğretim okulunun 4. ve 5. sınıf öğrencilerinden toplanarak bu veriler üzerinde sayı, yüzde, frekans ve ki kare analizleri gerçekleştirilmiştir. Araştırmanın bulguları, çocuk yaşam kalitesinin büyük oranda sosyo-ekonomik düzey ile açıklanabileceğini göstermektedir. Alt sosyo ekonomik düzeyden çocuklar okul dışında gelir getirici bir iş yaparak aile bütçesine katkıda bulunmaktadırlar. Sosyo-ekonomik düzeyi ne olursa olsun ailelerin çoğunluğu çocuklarının eğitimlerine ilköğretimden sonra da devam etmelerini isterken, alt sosyo-ekonomik düzeydeki okullara devam eden öğrenci ailelerinin %11,9 (n=16)’u “çocuğunun ilköğretimden sonra eğitimine devam etmemesini istemektedir. Tüm bu bulgular, toplum sağlığı, okul sağlığı ve çocuğun genel iyi olma durumu üzerine önemli önlemleri gerekli kılmaktadır

Impact of opioid-free analgesia on pain severity and patient satisfaction after discharge from surgery: multispecialty, prospective cohort study in 25 countries

Background: Balancing opioid stewardship and the need for adequate analgesia following discharge after surgery is challenging. This study aimed to compare the outcomes for patients discharged with opioid versus opioid-free analgesia after common surgical procedures.Methods: This international, multicentre, prospective cohort study collected data from patients undergoing common acute and elective general surgical, urological, gynaecological, and orthopaedic procedures. The primary outcomes were patient-reported time in severe pain measured on a numerical analogue scale from 0 to 100% and patient-reported satisfaction with pain relief during the first week following discharge. Data were collected by in-hospital chart review and patient telephone interview 1 week after discharge.Results: The study recruited 4273 patients from 144 centres in 25 countries; 1311 patients (30.7%) were prescribed opioid analgesia at discharge. Patients reported being in severe pain for 10 (i.q.r. 1-30)% of the first week after discharge and rated satisfaction with analgesia as 90 (i.q.r. 80-100) of 100. After adjustment for confounders, opioid analgesia on discharge was independently associated with increased pain severity (risk ratio 1.52, 95% c.i. 1.31 to 1.76; P < 0.001) and re-presentation to healthcare providers owing to side-effects of medication (OR 2.38, 95% c.i. 1.36 to 4.17; P = 0.004), but not with satisfaction with analgesia (beta coefficient 0.92, 95% c.i. -1.52 to 3.36; P = 0.468) compared with opioid-free analgesia. Although opioid prescribing varied greatly between high-income and low- and middle-income countries, patient-reported outcomes did not.Conclusion: Opioid analgesia prescription on surgical discharge is associated with a higher risk of re-presentation owing to side-effects of medication and increased patient-reported pain, but not with changes in patient-reported satisfaction. Opioid-free discharge analgesia should be adopted routinely

IN VIVO INDENTER EXPERIMENTS VIA ELLIPSOID INDENTER TIPS TO DETERMINE THE PERSONAL AND LOCAL IN-PLANE ANISOTROPIC MECHANICAL BEHAVIOR OF SOFT BIOLOGICAL TISSUES

Mechanical interaction of human body with surrounding is mostly via soft tissues because human body is nearly entirely covered with them. Finite element method, extensively used in various fields of engineering, could not reach to a similar success in simulating soft tissues (especially for modeling the interaction with exoskeletal prosteses and orthoses) mainly because soft tissue mechanical behavior is not known in detail in addition to relatively complex mechanical response of soft tissues

Computational performance analysis of an airborne rotor-type electricity generator wind turbine

This paper presents an analysis of the possible performance of a proposed airborne rotor type electricity generator wind turbine design. The innovative design proposal by inventor is based on the rotation of the airborne structure with blades attached to the airborne zeppelin and thus it is called an airborne rotor generator. In this paper computational fluid dynamics analysis of a model close to the proposed design is carried out and the results are presented. The proposed design examples are set to produce 10-100KW. The electrical energy generated through two symmetrically placed alternators at both ends of the zeppelin is transferred to the ground-based system through the tethered cords used to also stabilize the system. Thus, an airborne rotor generator is formed