IMPROVEMENT OF SERVICE QUALITY BY USING UBIQUITOUS COMPUTING IN HOSPITALITY

Economies of developed countries are primarily based on the services sector, where the hospitality industry plays an important role. As such, new service design and service innovation are vital for maintaining competitive advantage. Recently, ubiquitous computing has emerged as a key enabler in various industries in support of service innovation by facilitating the design of new services. This study aims to investigate the benefits provided by ubiquitous computing in the hospitality domain for improved service quality, customer satisfaction, and profitability. First, the literature on service quality is presented, and important quality dimensions are selected accordingly. After providing a brief review of related technologies and existing applications, a ubiquitous computing framework is proposed in support of innovative services for the hotel industry. Via the analysis of the framework, changes in business processes are exposed and the contributions of ubiquitous computing are discussed according to the identified service quality dimensions

Perde Duvarlı ve Çerçeveli Betonarme Binalarda Deprem Tasarım Sınıflarının Bina Maliyetine Etkisi

Betonarme binalarda yeterli dayanım için gerekli kaba inşaat maliyetleri farklı deprem tasarım sınıfları dikkate alınarak araştırılmıştır. Mevcut yapı stokunu temsil etmesi amacı ile belirlenen bina modelleri, dikkate alınan parametreler doğrultusunda dört farklı taban devrilme momenti oranı baz alınarak analiz edilmiştir. Bina modellerinin taşıyıcı sistemleri çerçeve sistem ve perde duvar + çerçeve sistem olmak üzere iki grup halinde dikkate alınmış, perde duvar etkilerinin bina maliyetine etkileri incelenmiştir. Perde duvar + çerçeve taşıyıcı sistemlerin tercih edilmesi durumunda kaba bina maliyetinde önemli bir artışın olmadığı görülmüştür. DTS2-DTS3-DTS4 de tasarlanan binalarda hesaplanan kaba bina maliyetleri benzer sonuçlar vermiştir. Ancak DTS1 de maliyet artışı ortalama %10 mertebesinde gerçekleşmiştir. Perde duvar + çerçeve taşıyıcı sistemlerin tercih edilmesi ile sağlanacak ciddi dayanım artışı avantajının yanında ortaya çıkan önemsiz maliyet artışlarının göz ardı edilebileceği kanaatine ulaşılmıştır. Bu nedenle tüm deprem tasarım sınıflarında perde duvar + çerçeve sistemlerin tercih edilmesi önerilmiştir

DİJİTAL OLGUNLUK İNDEKSİ: ORGANİZASYONLARIN DİJİTAL DÖNÜŞÜM YOLCULUĞUNDA VERİMLİLİĞİ ARTIRMAK İÇİN BİR KANTİTATİF YÖNTEM

Amaç: Literatürde dijital dönüşüm için geliştirilmiş olgunluk modellerinin incelenmesi ve yeni bir indeks yapısının temellerinin oluşturulması hedeflenmektedir. Böylece, işletmelerin mevcut dijital dönüşüm düzeylerini analiz edebilmesi, diğer işletmelerle objektif bir şekilde kıyas yapabilmesi, etkin bir şekilde dijital dönüşümü yönetebilmesi ve verimliliğini artırması beklenmektedir. Yöntem: Sistematik literatür taraması sonucunda tespit edilen 23 Olgunluk Modeli kapsam, amaca uygunluk, boyutların tamlığı gibi bir dizi kritere göre karşılaştırılarak analiz edilmiştir. Belirlenen eksiklikleri gidermek amacıyla işletmelerin dijital dönüşüm yeteneklerini kantitatif olarak değerlendiren yeni bir dijital olgunluk indeksi önerilmiştir. Bulgular: Analiz edilen olgunluk modellerinden hiçbiri beklenen kriterleri tam olarak karşılamadığından iyileştirilmeleri gerekmektedir. Bu çalışmada, ‘Strateji, Bilgi Teknolojileri, İnsan, Veri ve Süreçler’ boyutlarının değerlendirilmesinden oluşan bütünsel bir yaklaşım sunulmuştur. Özgünlük: İşletmeler dijital dönüşüm yolculuğunda kaynaklarını en verimli şekilde kullanarak, nereden başlanması ve nelerin yapılması gerektiğiyle ilgili bir yol haritası eksikliği yaşamaktadır. Bu çalışma, yatırım geri dönüş oranı en yüksek dijital dönüşüm projelerinin takvimini içeren bir rehberlik sunarak bu alandaki literatüre katkı sağlayacaktır

Assessment of process capabilities in transition to a data-driven organisation: A multidisciplinary approach

The ability to leverage data science can generate valuable insights and actions in organisations by enhancing data-driven decision-making to find optimal solutions based on complex business parameters and data. However, only a small percentage of the organisations can successfully obtain a business value from their investments due to a lack of organisational management, alignment, and culture. Becoming a data-driven organisation requires an organisational change that should be managed and fostered from a holistic multidisciplinary perspective. Accordingly, this study seeks to address these problems by developing the Data Drivenness Process Capability Determination Model (DDPCDM) based on the ISO/IEC 330xx family of standards. The proposed model enables organisations to determine their current management capabilities, derivation of a gap analysis, and the creation of a comprehensive roadmap for improvement in a structured and standardised way. DDPCDM comprises two main dimensions: process and capability. The process dimension consists of five organisational management processes: change management, skill and talent management, strategic alignment, organisational learning, and sponsorship and portfolio management. The capability dimension embraces six levels, from incomplete to innovating. The applicability and usability of DDPCDM are also evaluated by conducting a multiple-case study in two organisations. The results reveal that the proposed model is able to evaluate the strengths and weaknesses of an organisation in adopting, managing, and fostering the transition to a data-driven organisation and providing a roadmap for continuously improving the data-drivenness of organisations

Factors Affecting the Outcome in Traumatic Subarachnoid Hemorrhage

Objective: To define risk factors affecting the outcome in traumatic subarachnoid hemorrhage.Material and Methods: Forty-four patients with traumatic subarachnoid hemorrhage were evaluated retrospectively. They were divided into three groups according to their age: elderly (≥65 years), adult (16- 64 years), and children (<16 years). The clinical picture on admission was evaluated using the Glasgow Coma Scale. The patients were also divided into three groups according to their coma grading on admission: mild injury (Glasgow Coma Scale score 13-15), moderate injury (8-12), and severe injury (3-7). The amount of subarachnoid blood shown in computerized tomography was evaluated according to the Fisher index, and additional tomography findings were recorded. At last follow-up, presence of headache and neurological deficits as well as return to work or school were investigated, and the last clinical picture was evaluated with the Glasgow Outcome Scale.Results: There were 11 children, 23 adults and 10 elderly patients. Twelve patients died between 1-49 days after trauma; the others were followed for a mean of 14.6 months (from 10 to 30 months). In the children group, Glasgow Coma Scale score was significantly higher (p=0.004), subarachnoid blood amount was significantly lesser, and Glasgow Outcome Scale score was significantly better compared to the other groups. For all groups, higher trauma severity on admission was associated with higher Fisher index (p=0.016). Most important factors affecting clinical results were severity of head injury on admission (p=0.0001), Fisher index (p=0.003), and presence of additional findings on computerized tomography (p=0.0001).Conclusion: Traumatic subarachnoid hemorrhage usually has a good clinical outcome in children; however, in elderly patients, the outcome is worse, and there are usually additional intracranial traumatic lesions. Most important factors affecting outcome are blood amount on first computerized tomography, head trauma severity, and presence of additional intracranial traumatic lesions

Archaeogenetic analysis of Neolithic sheep from Anatolia suggests a complex demographic history since domestication

Yurtman, ozer, Yuncu et al. provide an ancient DNA data set to demonstrate the impact of human activity on the demographic history of domestic sheep. The authors demonstrate that there may have been multiple domestication events with notable changes to the gene pool of European and Anatolian sheep since the Neolithic. Sheep were among the first domesticated animals, but their demographic history is little understood. Here we analyzed nuclear polymorphism and mitochondrial data (mtDNA) from ancient central and west Anatolian sheep dating from Epipaleolithic to late Neolithic, comparatively with modern-day breeds and central Asian Neolithic/Bronze Age sheep (OBI). Analyzing ancient nuclear data, we found that Anatolian Neolithic sheep (ANS) are genetically closest to present-day European breeds relative to Asian breeds, a conclusion supported by mtDNA haplogroup frequencies. In contrast, OBI showed higher genetic affinity to present-day Asian breeds. These results suggest that the east-west genetic structure observed in present-day breeds had already emerged by 6000 BCE, hinting at multiple sheep domestication episodes or early wild introgression in southwest Asia. Furthermore, we found that ANS are genetically distinct from all modern breeds. Our results suggest that European and Anatolian domestic sheep gene pools have been strongly remolded since the Neolithic

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| &lt; 0.03 at 95% confidence level. [Figure not available: see fulltext.

Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at root s = 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.Peer reviewe