bluuebunny/crossref_metadata_2025 huggingface dataset:
Image segmentation evaluation and its application to object detection
Authors:   , Pont Tuset Jordi
Published: October 2023

The first parts of this Thesis are focused on the study of the supervised evaluation of image segmentation algorithms. Supervised in the sense that the segmentation results are compared to a human-made annotation, known as ground truth, by means of different measures of similarity. The evaluation depends, therefore, on three main points.
First, the image segmentation techniques we evaluate. We review the state of the art in image segmentation, making an explicit difference between those techniques that provide a flat output, that is, a single clustering of the set of pixels into regions; and those that produce a hierarchical segmentation, that is, a tree-like structure that represents regions at different scales from the details to the whole image.
Second, ground-truth databases are of paramount importance in the evaluation. They can be divided into those annotated only at object level, that is, with marked sets of pixels that refer to objects that do not cover the whole image; or those with annotated full partitions, which provide a full clustering of all pixels in an image. Depending on the type of database, we say that the analysis is done from an object perspective or from a partition perspective.
Finally, the similarity measures used to compare the generated results to the ground truth are what will provide us with a quantitative tool to evaluate whether our results are good, and in which way they can be improved. The main contributions of the first parts of the thesis are in the field of the similarity measures.
First of all, from an object perspective, we review the used basic measures to compare two object representations and show that some of them are equivalent. In order to evaluate full partitions and hierarchies against an object, one needs to select which of their regions form the object to be assessed. We review and improve these techniques by means of a mathematical model of the problem. This analysis allows us to show that hierarchies can represent objects much better with much less number of regions than flat partitions.
From a partition perspective, the literature about evaluation measures is large and entangled. Our first contribution is to review, structure, and deduplicate the measures available. We provide a new measure that we show that improves previous ones in terms of a set of qualitative and quantitative meta-measures. We also extend the measures on flat partitions to cover hierarchical segmentations.
The second part of this Thesis moves from the evaluation of image segmentation to its application to object detection. In particular, we build on some of the conclusions extracted in the first part to generate segmented object candidates. Given a set of hierarchies, we build the pairs and triplets of regions, we learn to combine the set from each hierarchy, and we rank them using low-level and mid-level cues. We conduct an extensive experimental validation that show that our method outperforms the state of the art in many metrics tested.
Multimodal microwave filters
Authors:   , Contreras Lizarraga Adrián Arturo
Published: October 2023

This thesis presents the conception, design and implementation of new topologies of multimodal microwave resonators and filters, using a combination of uniplanar technologies such as coplanar waveguide (CPW), coplanar strips (CPS) and slotlines. The term "multimodal" refers to uniplanar circuits in which the two fundamental modes of the CPW propagate (the even and the odd mode). By using both modes of the CPW, it is possible to achieve added functions, such as additional transmission zeros to increase the rejection, or to attenuate harmonic frequencies to improve the out-of-band rejection. Moreover, it is demonstrated that by using multimodal circuits, it is possible to reduce the length of of a conventional filter up to 80%. In addition to bandpass filters, new topologies of compact band-stop filters are developed. The proposed band-stop filters make use of slow-wave resonators to decrease the total area of the filters and achieve compact topologies.
This work also addresses the development of synthesis techniques for each multimodal filter. The design equations were obtained from generalized multimodal circuits available in the literature, which have been adapted for each particular case and modeled as basic filter components, such as immitance inverters or lumped elements. By using the proposed synthesis equations, it is possible to design filters with a desired response and relative bandwidth. The use of the proposed synthesis enables a fast analysis and design of multimodal filters using circuit simulators.
As an added feature, several reconfigurable and tunable filter topologies were demonstrated, using active devices (PIN diodes and varactors) or RF-MEMS. These new topologies demonstrate the flexibility of multimodal circuits. For the RF-MEMS-based tunable filters, different capacitive and ohmic switches were designed, fabricated and measured. As an example of the additional degrees of freedom using of RF-MEMS and multimodal CPW circuits, a reconfigurable filter using RF-MEMS switchable air-bridges as a reconfiguration device has been demonstrated in this work for the first time.
Unifying interaction across distributed controls in a smart environment using anthropology-based computing to make human-computer interaction "Calm"
Authors:   , Brown John N.A.
Published: October 2023

Rather than adapt human behavior to suit a life surrounded by computerized systems, is it possible to adapt the systems to suit humans? Mark Weiser called for this fundamental change to the design and engineering of computer systems nearly twenty years ago. We believe it is possible and offer a series of related theoretical developments and practical experiments designed in an attempt to build a system that can meet his challenge without resorting to black box design principles or Wizard of Oz protocols. This culminated in a trial involving 32 participants, each of whom used two different multimodal interactive techniques, based on our novel interaction paradigm, to intuitively control nine distributed devices in a smart home setting. The theoretical work and practical developments have led to our proposal of seven contributions to the state of the art.
Contribution to the development of pico-satellites for Earth observation and technology demonstrators
Authors:   , Jové Casulleras Roger
Published: October 2023

The submitted Ph.D. thesis is a contribution to the development of pico-satellites and nano-satellites for Earth Observation and Technology Demonstrators. Development of satellites with a mass from 1 kg up to 10 kg has really boosted during the past 15 years offering large costs reduction with respect to conventional (larger) satellites at compromised performances. However, these performances are increasing step by step, and their potential is about to explode. With 1.3 kg and a volume of 1 liter, 3Cat-1 is the first pico-satellite class satellite with up to seven different payloads on board: a harvesting energy powered beacon, a new topology solar cells, an optical sensor, a Geiger counter, a mono-atomic MEMS oxygen detector, a graphene transistor, and a Wireless Power Transfer experiment. Additionally, many main subsystems like the Electrical Power, the Attitude Determination and Control, and the Communication subsystems have been developed during this PhD. A description of each subsystem and how they have been integrated under these constrains are described in this PhD Thesis report. In the subsystems and in the experiments there are novel concepts and designs that will be explained. Some have been already published in the technical and scientific literature, others will be in the near future.

Tesi doctoral és una contribució al desenvolupament de pico-satèl.lits per a observació de la Terra i demostradors tecnològics. El desenvolupament de satèl¿lits amb massa d'entre 1 kg i 10 kg ha crescut ràpidament durant els darrers 15 anys, oferint importants reduccions de cost respecte els satèl.lits més convencionals (i més grans) amb unes prestacions menors però al mateix temps, acceptables. No obstant, aquestes prestacions estan millorant pas a pas, i el seu potencial a prop d'explosionar. Amb una massa de 1.3 kg i un volum d'un litre, el 3Cat-1 és el primer pico-satèl.lit de la seva categoria equipat amb set diferents càrregues útils a bord: un senyal de radio-balisa alimentat amb energia provinent d'un sistema recol.lector d'energia ambient, una nova topologia de cel.les solars, un sensor òptic, un comptador Geiger, un detector MEMS d'oxigen atòmic, un transistor de grafè, i un experiment de transmissió d'energia per acoblament inductiu. A més a més, molts dels subsistemes com ara el d'energia elèctrica, control i determinació d'actitud, i el subsistema de comunicacions han estat desenvolupats durant aquesta Tesi doctoral. Una descripció de cada subsistema, i com han estat integrats en condicions d'espai, massa i energia reduïdes, s'explica en aquest document. En els subsistemes i en els experiments hi ha nous conceptes i dissenys explicats. Alguns han estat ja publicats en la literatura científica mentre que altres ho seran en un futur proper
Dispositivos de medición de frecuencia reconfigurables = Reconfigurable frequency measurement devices
Authors:   , Espinosa Espinosa Moisés Isaac
Published: October 2023

This thesis presents reconfigurable microwave discriminators used for the development of reconfigurable measurement circuits with high miniaturization, low power consumption, reduced weight and cost.
The concept is demonstrated by the design and manufacture of several microwave discriminator topologies to generate 2 and 4 bits used for frequency identification. These topologies are implemented with transmission lines (microstrip and coplanar waveguides), solid state technology, and micro mechanical-electro-systems MEMS.
Three reconfigurable microwave discriminator topologies are presented; the first topology generates 2-bits of frequency identification, the second topology generates 4-bit of frequency identification. These topologies use solid state technology (PIN diodes), microstrip transmission lines and operate in the frequency bands L and S. The third topology uses coplanar waveguides and two SPQT switches; each switch of the device is integrated in a RF-MEMS SPQT chip. This topology operates in the frequency bands C, X and Ku.
Finally, the last topology presented in this work is the design of a MEMS phase shifter, which generates a phase shift of 180°. This topology uses slotline transmission lines and operates in the frequency band Ka. This phase shifter allows developing reconfigurable microwave discriminators with high miniaturization and reduced weight.

En esta tesis se presenta el concepto de discriminadores de microondas reconfigurables de dos puertos para el desarrollo de sistemas de medición de frecuencia reconfigurables de alta miniaturización, peso y costo reducido. Este concepto es comprobado con el diseño y fabricación de varias topologías de discriminadores de microondas para generar 2 y 4 bits de identificación de frecuencia, implementados con líneas de transmisión microstrip y coplanar waveguide, y tecnología de estado sólido, y sistemas micro-electro-mecánicos MEMS. Se presentan tres topologías de discriminadores de microondas reconfigurables; uno genera 2 bits de identificación y los dos restantes generan 4 bits de identificación. Dos topologías utilizan tecnología de estado sólido (diodos PIN), líneas de transmisión microstrip y operan en la banda de frecuencia L y S. La última topología usa interruptores SPQT integrados en chips RF-MEMS, líneas de transmisión coplanar y opera en las bandas de operación C, X y Ku. Finalmente, se presenta el diseño de un defasador implementado con tecnología MEMS para generar un corrimiento de fase de 180°. Esta topología utiliza líneas de transmisión tipo slotline y opera en la banda Ka. Este defasador permite generar discriminadores de microondas reconfigurables con alta miniaturización, y peso reducido
Keunikan Model Marketing Dari Mulut Ke Mulut Dalam Era Digital
Authors: Pesa Nugraha Putu
Published: October 2023

Model pemasaran dari mulut ke mulut (word-of-mouth marketing) telah menjadi fenomena penting dalam dunia bisnis saat ini. Jurnal ini bertujuan untuk menyelidiki dan menganalisis keunikan model pemasaran dari mulut ke mulut sebagai salah satu alat pemasaran yang efektif dalam era digital. Melalui tinjauan literatur, penelitian ini mengidentifikasi faktor-faktor kunci yang mendorong keberhasilan model pemasaran dari mulut ke mulut dalam mencapai tujuan bisnis. Dalam jurnal ini, penulis mengeksplorasi bagaimana model pemasaran dari mulut ke mulut berbeda dari strategi pemasaran konvensional dan bagaimana keterlibatan konsumen memainkan peran sentral dalam proses ini. Selain itu, penelitian ini juga menganalisis dampak teknologi digital dan media sosial pada penyebaran pesan dari mulut ke mulut, serta mempertimbangkan peran pengaruh para influencer dalam mempengaruhi keputusan pembelian konsumen. Hasil dari penelitian ini menunjukkan bahwa keunikan model pemasaran dari mulut ke mulut terletak pada aspek-aspek seperti kepercayaan konsumen, otoritas sosial, dan efek jaringan yang kuat. Selain itu, model ini juga menunjukkan tingkat keberhasilan yang lebih tinggi dalam mempengaruhi perilaku konsumen dan memperluas jangkauan merek daripada metode pemasaran tradisional. Penelitian ini memberikan pandangan yang mendalam tentang potensi model pemasaran dari mulut ke mulut dalam meningkatkan kesadaran merek, loyalitas konsumen, dan peningkatan penjualan. Dalam era digital yang terus berkembang, pemahaman tentang bagaimana memanfaatkan model pemasaran dari mulut ke mulut dengan cerdas dan efektif dapat memberikan keunggulan kompetitif bagi perusahaan dalam memasarkan produk dan jasanya. Penelitian ini berkontribusi pada wawasan tentang strategi pemasaran inovatif yang relevan dengan tren konsumen saat ini, dan memberikan landasan untuk penelitian lebih lanjut dalam memahami fenomena pemasaran dari mulut ke mulut di masa depan.
Pengaruh Budaya Organisasi Dan Motivasi Berpretasi Terhadap Kepuasan Kerja Guru Smp Negeri di Kecamatan Lintong Nihuta
Authors: Siburian Indrawaty , Arli Sonti Pakpahan Betty , C. Marbun Rencan
Published: October 2023

Tujuan penelitian ini adalah untuk mengetahui pengaruh budaya organisasi dan motivasi berprestasi secara parsial maupun simultan terhadap kepuasan kerja guru SMP Negeri di-Kecamatan Lintong Nihuta, dengan hipotesis terdapat pengaruh yang positif dan signifikan. Penelitian ini menggunakan pendekatan kuantitatif deskriptif dan inferensial. Populasi penelitian ini adalah seluruh guru di SMP Negeri Kecamatan Lintong Nihuta yang bejumlah 167 orang dengan sampel 126 orang menggunakan tabel Krejcie dan Morgan. Instrumen penelitian ini berupa angket tertutup. Uji coba angket dilakukan kepada 30 guru yang bukan sampel, dan 15 butir soal teruji validitas dan reliabilitasnya. Hipotesis di atas diterima kebenarannya dengan data:1) terdapat pengaruh budaya organisasi terhadap kepuasan kerja sebesar 17,5% dengan thitung  2,189 > ttabel 1.97. 2) terdapat pengaruh motivasi berprestasi terhadap kepuasan kerja sebesar 58,4% dengan  thitung=7,434 > ttabel 1.97. 3) terdapat pengaruh  yang positif dan signifikan budaya organisasi dan motivasi berprestasi terhadap kepuasan kerja sebesar 53,6% dengan Fhitung =73,313 > Ftabel = 3.06. Dengan demikian H0 ditolak dan Ha diterima, Artinya terdapat pengaruh positif dan signifikan budaya organisasi dan motivasi berprestasi terhadap kepuasan kerja guru SMP Negeri di Kecamatan Lintong Nihuta secara parsial maupun simultan.
Pengaruh Kemampuan Manajerial Kepala Sekolah Dan Disiplin Kerja Guru Terhadap Mutu Pendidikan Sma Negeri Se-Kecamatan Doloksanggul
Authors: Sitorus Erbin , Panjaitan Binur , Dewi Aritonang Hanna
Published: October 2023

Tujuan Penelitian ini adalah untuk mengetahui: 1) pengaruh kemampuan manajerial kepala sekolah secara parsial terhadap mutu Pendidikan SMA Negeri Se-Kecamatan Doloksanggul; 2) pengaruh disiplin kerja guru secara parsial terhadap mutu Pendidikan SMA Negeri Se-Kecamatan Doloksanggul; 3) pengaruh kemampuan manajerial secara Bersama sama terhadap mutu pendidikan SMA Negeri Se-Kecamatan Doloksanggul. Penelitian ini menggunakan pendekatan kuantitatif deskriptif. Latar belakang penelitian ini adalah rendahnya mutu Pendidikan SMA Negeri Se-Kecamatan Doloksanggul dimana masih banyak siswa/I yang tidak masuk perguruan tinggi negeri. Beberapa factor yang mempengaruhi mutu Pendidikan adalah kemampuan manajerial kepala sekolah dan disiplin kerja guru. Dari hasil hasil Analisa data diperoleh hasil penelitian sebagai berikut: 1) persamaan regresi Y atas X1 dan X2 diperoleh Y = -3.689 + 0.540X1 + 0.956 X2, artinya bahwa setiap penambahan variable X1 satu satuan akan berkontribusi 0.540 terhadap mutu Pendidikan jika variable lain tetap, serta penambahan varibel X2 satu satuan akan berkontribusi 0.956 terhadap mutu Pendidikan jika variable lain tetap; 2) Variabel X1 dan variable X2 secara simultan mempengaruhi mutu Pendidikan sebesar 75.5%; 3) Uji hipotesa diperoleh: a) uji hipotesa X1 terhadap Y diperoleh persamaan regresinya Y = 45.810 + 0.846 X1 dan  thitung  = 9.290 >ttabel=1.997 sehingga H01 ditolak dan Ha1 diterima yaitu terdapat hubungan yang positif dan siginifikan kemampuan manajerial kepala sekolah terhadap mutu Pendidikan SMA Negeri Se-Kecamatan Doloksanggul; b) X2 terhadap Y diperoleh persamaan regresinya Y= 1.442 X2 – 0.888 dan  nilai thitung=9.664 > ttabel = 1.997, sehingga H02 ditolak dan Ha1 diterima yaitu terdapat hubungan yang positif dan signifikan disiplin kerja guru terhadap mutu Pendidikan; c) uji hipotesa X1 dan X2 terhadap Y diperoleh nilai Fhitung =98.592 > Ftabel = 3.140 sehingga H03 ditolak dan Ha3 diterima yaitu terdapat hubungan yang positif dan siginifikan variable kemampuan manajerial kepala sekolah dan variable disiplin kerja guru secara Bersama sama terhadap mutu Pendidikan SMA Negeri Se-Kecamatan Doloksanggul.
PHẪU THUẬT LICHTENSTEIN ĐIỀU TRỊ THOÁT VỊ BẸN NGHẸT TẠI CẦN THƠ NĂM 2021-2023
Authors: Thái Ngọc Hân , Nguyễn Văn Tuấn , Đặng Hồng Quân , Lâm Hoàng Huấn , Phạm Văn Lình
Published: October 2023

Đặt vấn đề: Thoát vị bẹn nghẹt là một biến chứng thường gặp trong cấp cứu ngoại khoa, có nhiều phương pháp điều trị bao gồm mổ mở và mổ nội soi. Phẫu thuật Lichtenstein đã được áp dụng trong điều trị thoát vị bẹn nghẹt từ lâu trên thế giới cũng như nước ta. Tuy nhiên, tại Cần Thơ, kỹ thuật này chưa được nghiên cứu một cách đầy đủ, vì vậy chúng tôi tiến hành thực hiện nghiên cứu này. Mục tiêu nghiên cứu: (1) Mô tả đặc điểm lâm sàng, cận lâm sàng của bệnh nhân thoát vị bẹn nghẹt; (2) Đánh giá kết quả điều trị thoát vị bẹn nghẹt bằng phương pháp Lichtenstein tại Bệnh viện Đa khoa Trung ương Cần Thơ và Bệnh viện Đa khoa thành phố Cần Thơ. Đối tượng và phương pháp nghiên cứu: Nghiên cứu tiến cứu, mô tả cắt ngang ở 35 bệnh nhân thoát vị bẹn nghẹt được điều trị bằng phương pháp Lichtenstein. Kết quả: Độ tuổi trung bình là 51,8±19,9. Có 45,7% bệnh nhân thoát vị bẹn nghẹt bên phải, bên trái 54,3%. ASA trung bình trước mổ là 1,3±0,5. Thời gian phẫu thuật trung bình 96,9±29,3 phút. Hoại tử ruột non có 1 trường hợp (2,9%). Có 2,9% trường hợp tụ dịch vết mổ và 2,9% trường hợp bí tiểu sau mổ. Thời gian nằm viện trung bình sau mổ 3,7±1,1 ngày. Đánh giá kết quả sớm: 91,4% tốt, 8,6% khá. Kết quả sau 6 tháng: 97,1% tốt, 2,9% khá. Kết luận: Điều trị thoát vị bẹn nghẹt bằng phẫu thuật Lichtenstein là an toàn và hiệu quả.
KẾT QUẢ ĐIỀU TRỊ UNG THƯ BÀNG QUANG CHƯA XÂM LẤN CƠ BẰNG PHẪU THUẬT CẮT ĐỐT NỘI SOI KẾT HỢP BƠM DOXORUBICIN TẠI BỆNH VIỆN ĐA KHOA TRUNG ƯƠNG CẦN THƠ
Authors: Phạm Hữu Tân , Đàm Văn Cương
Published: October 2023

Đặt vấn đề: Ung thư bàng quang là một loại ung thư thường gặp trong các loại ung thư đường tiết niệu. Tại thời điểm chẩn đoán, có khoảng 60-80% các trường hợp ung thư bàng quang chưa xâm lấn cơ. Phẫu thuật cắt đốt nội soi phối hợp điều trị tại chỗ sau phẫu thuật bằng bơm hoá chất vào bàng quang là điều trị tiêu chuẩn cho ung thư bàng quang chưa xâm lấn cơ. Doxorubicin hiện là hoá chất đang được sử dụng tại Bệnh viện Đa khoa Trung ương Cần Thơ. Mục tiêu nghiên cứu: Đánh giá kết quả điều trị ung thư bàng quang thể chưa xâm lấn cơ bằng phẫu thuật cắt đốt nội soi kết hợp bơm doxorubicin. Đối tượng và phương pháp nghiên cứu: Mô tả cắt ngang tiến cứu với 30 bệnh nhân ung thư bàng quang chưa xâm lấn cơ từ tháng 3/2021 đến tháng 1/2023. Kết quả: Tỉ lệ nam/nữ: 22/8. Tuổi trung bình: 55±11,7 tuổi. 73,3% trường hợp vào viện vì đái máu. Thời gian phẫu thuật trung bình: 35,22±13,5 phút. Thời gian nằm viện: 6,53±1,6 ngày. Kết quả phẫu thuật: hầu hết cho kết quả tốt (93,3%), không có trường hợp đạt kết quả xấu. Giải phẫu bệnh sau mổ: 56,7% PTa, 43,3% PT1 và phần lớn các trường hợp có độ biệt hóa Grade 1 (63,3%). Tỉ lệ tái phát sau 12 tháng: 3,8%. Kết luận: Phẫu thuật nội soi cắt đốt u bàng quang thể chưa xâm lấn cơ qua đường niệu đạo là phương pháp an toàn và khả thi. Hoá trị tại chỗ sau mổ bằng doxorubicin cho thấy an toàn, dễ thực hiện và không có biến chứng nặng. Tỉ lệ tái phát sau 12 tháng là 3,8%.
TÌNH HÌNH NHIỄM NẤM CANDIDA SPP. Ở PHỤ NỮ VIÊM ÂM ĐẠO TẠI BỆNH VIỆN ĐA KHOA TRUNG ƯƠNG CẦN THƠ NĂM 2022-2023
Authors: Nguyễn Thị Bé Ni , Trần Ngọc Dung , Lâm Đức Tâm , Đỗ Hoàng Long , Đinh Thị Hương Trúc , Nguyễn Thị Thảo Linh , Phan Hoàng Đạt
Published: October 2023

Đặt vấn đề: Viêm âm đạo là một trong những bệnh phụ khoa hay gặp nhất ở phụ nữ trong độ tuổi sinh đẻ với tác nhân gây viêm âm đạo thường gặp là nấm Candida spp. Việc chẩn đoán viêm âm đạo do nấm Candida chủ yếu dựa vào soi tươi mẫu dịch phết âm đạo và nuôi cấy nấm trong môi trường thạch Sabouraud. Mục tiêu nghiên cứu: (1) Xác định tỷ lệ nhiễm nấm Candida spp. ở phụ nữ viêm âm đạo đến khám tại Bệnh viện Đa khoa Trung ương Cần Thơ năm 2023; 2. Tìm hiểu một số yếu tố liên quan đến tình hình viêm âm đạo do nấm Candida spp. ở phụ nữ viêm âm đạo. Đối tượng và phương pháp nghiên cứu: Nghiên cứu trên 150 phụ nữ đến khám phụ khoa tại Bệnh viện Đa khoa Trung ương Cần Thơ và chẩn đoán xác định là viêm âm đạo. Bệnh nhân được lấy mẫu dịch phết âm đạo, làm xét nghiệm soi tươi và nuôi cấy trong môi trường Sabouraud. Kết quả: Tỷ lệ viêm âm đạo do nấm Candida spp. qua soi tươi là 22,7% và nuôi cấy trong môi trường Sabouraud là 38,0%. Một số yếu tố liên quan gồm nguồn nước không hợp vệ sinh, thói quen vệ sinh sinh dục hàng ngày, thay băng vệ sinh khi hành kinh, vệ sinh sau tiểu tiện (p<0,05). Kết luận: Tỷ lệ viêm âm đạo do nấm Candida spp. qua soi tươi là 22,7%, nuôi cấy trong môi trường Sabouraud là 38,0%. Viêm âm đạo do nấm Candida spp. có liên quan đến nguồn nước sinh hoạt, thói quen vệ sinh sinh dục, thay băng vệ sinh khi hành kinh, vệ sinh sau tiểu tiện (p<0,05).
NGHIÊN CỨU CHẤT LƯỢNG KHÁM CHỮA BỆNH NGOẠI TRÚ VÀ MỘT SỐ YẾU TỐ LIÊN QUAN TẠI KHOA KHÁM BỆNH, BỆNH VIỆN ĐA KHOA TÂN HƯNG NĂM 2023
Authors: Đỗ Thị Thuý Diễm , Trần Thiện Thuần , Lê Thị Kim Án , Ngô Bửu Thiệu
Published: October 2023

Đặt vấn đề: Chất lượng dịch vụ khám chữa bệnh có liên quan đến sự hài lòng của người bệnh.  Mục tiêu nghiên cứu: Mô tả chất lượng khám chữa bệnh ngoại trú và một số yếu tố liên quan tại Khoa Khám bệnh, Bệnh viện Đa khoa Tân Hưng. Đối tượng và phương pháp nghiên cứu: Nghiên cứu mô tả cắt ngang trên 249 bệnh nhân đến khám ngoại trú tại Khoa Khám bệnh, Bệnh viện Đa khoa Tân Hưng. Kết quả: Tỷ lệ hài lòng chung về chất lượng dịch vụ khám chữa bệnh dưới góc độ người bệnh là 95,18%. Sự đảm bảo chất lượng chiếm tỷ lệ cao nhất trong hài lòng về chất lượng dịch vụ với 93,98%. Sự hài lòng về chất lượng dịch vụ của người bệnh có sử dụng bảo hiểm y tế có tỷ lệ thấp hơn đối tượng không sử dụng bảo hiểm y tế (p<0,05). Kết luận: Chất lượng khám chữa bệnh ngoại trú tại Bệnh viện Đa khoa Tân Hưng chiếm tỷ lệ cao và có liên quan đến việc không sử dụng bảo hiểm y tế.
Renewable Rush in Syria Faces Economic Crisis
Authors: Houran Mohamad Abou , Dagestani Abd Alwahed
Published: October 2023

Since 2011, the conflict in Syria left the country with a devastating energy sector and fragile economy. The residents struggle daily to live with only two hours a day of electricity. The crisis encouraged some Syrians to assemble photovoltaic (PV) panels to generate energy. Unfortunately, the geopolitical risks, the inflation, and displacement are making the situation worse. The geopolitical risks are complex and multifaceted due to the ongoing war and the involvement of various regional and international actors. In this letter, we focus on the situation in war-torn Syria, its economy, and the opportunities for renewable energy development in the country. We also give some recommendations for academics and policy makers.
CEO power, corporate governance, and firm leverage
Authors: Sheikh Shahbaz
Published: October 2023

This study empirically examines the effect of corporate governance on the relation between CEO power and firm leverage. Results from OLS and industry fixed effects regressions show that CEO power is positively associated with firm leverage. However, this association is driven by the strength of corporate governance as powerful CEOs tend to choose higher levels of debt only when corporate governance is strong. When corporate governance is weak, CEO power does not seem to have any effect on firm leverage. Overall, results indicate that strong corporate governance mitigates the severity of manager-shareholder conflicts and induces powerful CEOs to choose higher leverage.
Existence and uniqueness of the p-generalized modified error function
Authors: Bollati Julieta , Semitiel Jose A. , Natale Maria F. , Tarzia Domingo A.
Published: October 2023

In this article, we define a p-generalized modified error function as the solution to a non-linear ordinary differential equation of second order, with a Robin type boundary condition at x=0. We prove existence and uniqueness of a non-negative \(C^{\infty}\) solution by using a fixed point argument. We show that the p-generalized modified error function converges to the p-modified error function defined as the solution to a similar problem with a Dirichlet boundary condition. In both problems, for p=1, the generalized modified error function and the modified error function are recovered. In addition, we analyze the existence and uniqueness of solution to a problem with a Neumann boundary condition.

For more information see https://ejde.math.txstate.edu/Volumes/2020/35/abstr.html
Multiple positive solutions for biharmonic equation of Kirchhoff type involving concave-convex nonlinearities
Authors: Meng Fengjuan , Zhang Fubao , Zhang Yuanyuan
Published: October 2023

In this article, we study the multiplicity of positive solutions for the biharmonic equation of Kirchhoff type involving concave-convex nonlinearities, $$ \Delta^2u-\Big(a+b\int_{\mathbb{R}^N}|\nabla u|^2dx\Big)\Delta u+V(x)u =\lambda f_1(x)|u|^{q-2}u+f_2(x)|u|^{p-2}u. $$ Using the Nehari manifold, Ekeland variational principle, and the theory of Lagrange multipliers, we prove that there are at least two positive solutions, one of which is a positive ground state solution. For more information see https://ejde.math.txstate.edu/Volumes/2020/44/abstr.html
Tentativas de censura a livros nos primeiros dois anos do governo Bolsonaro 2019-2020
Authors: Reimao Sandra , Nery João Elias , Maués Flamarion
Published: October 2023

Esse artigo aborda as tentativas de censura a livros, no Brasil, nos anos de 2019 e 2020. Entende-se por censura a livros qualquer ação que vise dificultar, limitar ou constranger a redação, impressão, divulgação, distribuição, comercialização ou aquisição de livros. Esse artigo está organizado em quatros blocos: 1) censura a livros – 2015-2018 – o prenuncio; 2) Censura a livros em 2019 - Investidas contra duendes, bruxas, cultura africana e educação sexual e outros casos; 3) Censura em Rondônia e outros eventos em 2020 e 4) atos de resistência. O percurso percorrido deixa claro que o governo de Jair Bolsonaro busca consolidar-se através de um discurso de intolerância e ódio. Os casos de censura a livros que citamos neste estudo demonstram que proliferam atualmente no Brasil atitudes intolerantes e autoritárias que se somam e tentam construir uma cultura de vigilância e censura. Por outro lado, as vozes da resistência estão agindo, estão se fazendo presentes de forma contundente.
A intermitência da memória: transcontextualização em “O corpo”, de Clarice Lispector
Authors: Cunha João Manuel dos Santos
Published: October 2023

Este ensaio examina as relações contextuais entre a ditadura militar brasileira (1964-1985) e a literatura de ficção produzida no país naquela época, centrando a reflexão na análise comparada de “O coração delator” (The tell-tale heart, Edgar Allan Poe, 1843), “O coração denunciador” (tradução de Clarice Lispector para o texto de Poe, 1974) e o conto “O corpo” (Clarice Lispector, 1974).
Fuzzy Classification of European Regions in the Evaluation of Smart Growth
Authors: Markowska Małgorzata , Jefmański Bartłomiej
Published: October 2023

“Europe 2020 Strategy” presents the vision of European economy development, in which smart development, i.e. development based on knowledge and innovation, constitutes one of major priorities. Smart specialization which refers to enterprises, research centres and high schools cooperating in defining the most promising areas of specialization in a given region, represents one of crucial smart development components. Smart specialization refers to both, the concept and the tool, allowing regions and countries to assess their unique position in knowledge-based economy. This knowledge should not be underestimated at the stage of preparing regional and interregional policy assumptions and specifying directions for the distribution of financial means allocated to further development of regions, constructing their advantage in regional space and position in knowledge based economy. Therefore, the essential objective of the hereby study is to distinguish classes of regions in European space with regard to one complex phenomenon, i.e. smart specialization. For this reason both classical and fuzzy classification methods were applied. Such approach facilitated e.g. specifying these regions for which it is difficult to provide clear division regarding their membership in distinguished classes. They are the regions which “keep searching” for their optimum path of smart development and which should be offered particular attention by entities managing development at regional, national and overall EU level.
Współzależność pomiędzy rozwojem teorii i praktyki badań reprezentacyjnych w Polsce
Authors: Kordos Jan
Published: October 2023

The author examines interplay between sample survey theory and practice in Poland over the past 60 years or so. He begins with the Neymans’s (1934) classic landmark paper which laid theoretical foundations to the probability sampling (or design-based) approach to inference from survey samples. Main ideas of that paper were first published in Polish in 1933 (Neyman, 1933) and had a significant impact on sampling practice in Poland before and after the World War II. Sample surveys conducted in 1950s and 1960s were consulted with J. Neyman during his visits in Poland in 1950 and 1958 (Fisz, 1950a; Zasepa, 1958). Some practical problems encountered in the design and analysis of sample surveys were partly solved by the Mathematical Commission of the CSO which was established in 1949, as an advisory and opinionmaking body to the CSO President in the field of sample surveys. The Commission concentrated specialists in the sampling methods both from the CSO and research centres in the country (Kordos, 2012a). The Commission had a significant impact on sampling practice in Poland and was active till 1993. Special attention is devoted to the impact of sampling theory on sampling practice in Poland, and particularly on sample designs and estimation methods in: sampling in time and rotation methods (Kordos, 1967, 2012b; Kowalczyk, 2004; Kowalski, 2006; Wesołowski, 2010); sample allocation and estimation methods (Bracha, 1994, 1996, 2003; Greń, 1964, 1966, 1969, 1970; Kordos, 1969, 1973, 1982; Wesołowski, 2004, Zasępa, 1962, 1972, 1993 ); data quality (Kordos, 1973, 1988); estimation methods for small areas (Dehnel, 2010; Domański, Pruska, 2001; Golata, 2004ab, 2012; Kalton et al., 1993; Kordos, 1991, 2000b, 2004; Kordos, Paradysz, 2000; Niemiro, Wesołowski, 2012; Paradysz, 1998; Wesołowski, 2004). Concluding remarks are given at the end.
Statystyka regionalna: stan, problemy i kierunki rozwoju
Authors: Paradysz Jan
Published: October 2023

This paper presents the state of Polish regional statistics, taking into account the guidelines contained in the EUROSTAT and the latest practices of the Central Statistical Office. The object of our attention are the sources of information, with particular emphasis on administrative records and the estimation for small areas. Problems and challenges of Polish regional statistics presented in the form of a SWOT analysis. We find a significant improvement in the methodology and sources of information supply in recent years. Active participation by a large number of Polish statisticians in meetings of small area estimation gives hope for further improvement in the regional statistics in Poland.
Analiza ubóstwa w przekroju powiatów w województwie wielkopolskim z wykorzystaniem metod statystyki małych obszarów
Authors: Wawrowski Łukasz
Published: October 2023

Poverty is very complex phenomenon. Limitation of this disadvantageous phenomenon is main goal of World Bank now. Nevertheless, to realize this mission methods of identification the poor are necessary. Indicates describing poverty are provide at very general level. Getting more detailed information is possible thanks to applied small area estimation (SAE). It is the set of methods which allow estimation of parameters at small sample size with usage of all available information sources. The main goal of this article is attempt to estimate at-risk-of-poverty rate at districts in Great Poland using chosen methods of SAE. These measure will calculation based on statistics data describing life level of households in Poland provided by Central Statistical Office. That estimation give comprehensive information at local level about poverty.
Zastosowanie wybranych metod statystyczno-ekonometrycznych w badaniu aktywności turystycznej seniorów w Polsce
Authors: Bąk Iwona
Published: October 2023

Purpose of this paper is to present an analysis of the dependences between a variable determining occurrence of a tourist trip and economic and socio-demographic variables that characterize households of seniors in Poland. The study is based on statistical data regarding tourist trips taken by members of households, where half of the household is of the age of 60 or more years. It has been culled from a survey performed in 2009 by the National Statistical Office, called „Tourism and leisure at households”. In researches about significance of factors determining occurrence of a tourist trip were used X2 independence test and logit model.
Upaya Meningkatkan Profesional Guru Sdn 14 Mudiak Lolo Dengan Menggunakan Model Pembelajaran Kooperatif Tipe Think Talk Write (Ttw) Pada Pembelajaran Ipa Melalui Pembinaan Kkg Sekolah
Authors: Syafrial Syafrial
Published: October 2023

Dalam merancang sebuah pembelajran yang menyenangkan dan inovatif tidaklah mudah, karena membutuhkan kemampuan, keahlian yang khusus dalam bidang keguruan. Penelitian ini bertujuan untuk mengetahui apakah melalui pembinaan secara intensif di KKG dapat mengatasi permasalahan guru dalam menggunakan Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW)pada mata pelajaran IPA. Hipotesa tindakan bahwa pembinaan yang diberikan secara intensif di KKG dapat meningkatkan kemampuan guru dalam menggunakan Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW) pada mata pelajaran IPA di sekolah binaan. Penelitian ini dilakukan pada bulan Juli sampai dengan bulan Desember 2022 khusus untuk guru SDN 14 Mudiak Lolo Kecamatan Sungai Pagu Kabupaten Solok Selatan dengan jumlah guru 10 orang. Jenis statistik yang digunakan adalah statistik deskriptif, seperti teknik presentase. Dari hasil penelitian dapat disimpulkan bahwa Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW) dapat meningkatkan kemampuan profesional guru dalam merancang dan melaksanakan pembelajaran, yang mana pada siklus pertama baru 40% guru yang paham tentang Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW), pada siklus II meningkat menjadi 60%  dan pada siklus III meningkat menjadi 90%, dengan meningkatnya pemahaman guru tentang pengggunaan Model Pembelajaran Kooperatif Tipe Think Talk Write (TTW) dalam pembelajaran IPA pada akhirnya suasana pembelajaran yang efektif, aktif, dan kreatif dan menyenangkan akan muncul dengan sendirinya, sehingga hasil belajar siswa dapat meningkat.
Gender Differentiation And Women Empowerment With Reference To The Plays Of Mahesh Dattani
Authors:   Research Scholar, Desh Bhagat University, Mandi Gobindgarh, Fatehgarh, Punjab., Madhu Madhu ,   Head Mistress at Air Force School, Vadsar, Kalol, Gandhinagar, Gujarat, India
Published: October 2023

Mahesh Dattani is an Indian playwright who has written extensively about the lives of women in India. Dattani’s plays often explore the experiences of women in India, and how they are affected by social and cultural norms. This paper tries to discuss and explore the themes of gender discrimination, incest, patriarchy, women subordination, and power. In his plays, women are often shown as victims of patriarchal society. However, they also show how women can fight back against these forces. Dattani’s plays show that women are not simply victims of patriarchal society. They are strong and resilient individuals who can fight back against oppression. His plays offer a message of hope to women everywhere. In many of his plays, he explores the ways in which women are subjected to violence and discrimination and how they are fighting back against traumatic situations, such as abuse, incest, gender discrimination, and violence. Dattani’s plays are important because they give voice to the experiences of women who are often silenced. He shows that women are capable of overcoming adversity and resilience, and they will not hesitate to fight back for their rights. His plays also challenge traditional gender roles and stereotypes, and they offer a vision of a more just and equitable society.
Homelessness in Sierra Leone: An Overview of Social Work Intervention in Helping Homeless Population
Authors: Fullah Moses Abdul
Published: October 2023

The article looks at the key causes of the rise in homelessness as well as Social Work intervention strategies in helping homeless people in Freetown. In many nations, homelessness has been a long-standing social issue. How to help homeless individuals live independently is a dilemma encountered by those who work and volunteer in homeless shelters. The study looked at problems with homelessness among children, teens, adults, the elderly, women, and veterans over the previous years in this brief study. According to the findings, family circumstances, housing, unemployment, and mental illness are the main causes of homelessness. Initial instances of these issues result in homelessness, which in turn makes them worse. Effective community interventions and policies are needed to prevent and reduce homelessness, including drug rehabilitation facilities job support, and affordable housing.
The Effectiveness of Dynamic Probabilistic Flooding in On-Demand Routing Protocols for MANETs was Assessed Through a Performance Analysis
Authors: Hanashi Abdalla M. , Algoul Saleh
Published: October 2023

In mobile ad hoc networks (MANET), broadcasting is widely used in route discovery and many other network services. The efficiency of broadcasting protocol can affect the performance of the entire network. As such, the simple flooding algorithm aggravates a high number of unnecessary packet rebroadcasts, causing contention and packet collisions. Proper use of probabilistic method can reduce the number of rebroadcasting, therefore reduce the chance of contention and collision among neighboring nodes. A good probabilistic broadcast protocol can achieve high save rebroadcast and low collision. In this paper, we propose a dynamic probabilistic approach when nodes move according to way point mobility and compare it with simple flooding AODV and fixed probabilistic scheme. Our approach dynamically set the rebroadcasting probability according to the number of nieghbors nodes distributed in the ad hoc network. Simulation results show our approach performs better than both simple flooding and fixed probabilistic flooding.
Joining the UK National Monographs Strategy Expert Panel
Authors: Eve Martin Paul
Published: October 2023

I'm very pleased to announce that I am joining Jisc's National Monographs Strategy Expert Advisory Panel.
SXSW Panel: Vote to get Open Access on the agenda
Authors: Eve Martin Paul
Published: October 2023

So, in conjunction with the amazing people at South End Press -- a group of people unsurpassed in my esteem -- I'm proud to be part of a proposal for the SXSW conference this year. However, we need you to VOTE FOR OUR PANEL at PanelPicker. Please do this. It takes 2 minutes. What are we planning to talk about? How has digital publishing affected small independent presses? Are small independent presses suffering and why?
Measuring the elongation of vertebrae
Authors: Taylor Mike
Published: October 2023

Let’s take another look at that  Giraffatitan  cervical. MB.R.2180:C5, from a few days ago: That’s a pretty elongate vertebra, right? But  how  elongate, exactly? How can we quantify whether it’s more or less elongate than some other vertebra?
Tutorial 19: Open Access definitions and clarifications (in seven parts)
Authors: Taylor Mike
Published: October 2023

I’m gathering all seven parts of Tutorial 19 (“Open Access definitions and clarifications”) in one place for easy reference. Here they are: Part 1: what actually is Open Access?
The importance of cartilage in neck reconstructions
Authors: Taylor Mike
Published: October 2023

As I mentioned a few days ago, Matt and I have a couple of papers in the new PLOS ONE Sauropod Gigantism collection.
Anti-tutorial: how to design and execute a really bad study
Authors: Taylor Mike
Published: October 2023

Suppose, hypothetically, that you worked for an organisation whose nominal goal is the advancement of science, but which has mutated into a highly profitable subscription-based publisher. And suppose you wanted to construct a study that showed the alternative — open-access publishing — is inferior.
Verleiten Lehrer zu „systematischen Urheberrechtsverletzungen”?
Authors: Pachali David
Published: October 2023

Im Feuilleton-Aufmacher der  Süddeutschen  schreibt Willi Winkler heute darüber, „wie Project Gutenberg das Urheberrecht unterläuft”. Kern des Anstoßes für Winkler: Die Buddenbrooks und andere Werke von Thomas Mann sind in den USA bereits gemeinfrei, in Deutschland noch nicht. Dennoch stehen sie bei gutenberg.org digitalisiert als E-Book online.
“Phat air meets wide gauge” meets color
Authors: Wedel Matt
Published: October 2023

Mark Witton, pterosaur-wrangler, Cthulhu-conjurer, globe-trotting paleo playboy and all-around scientific badass, drew this (and blogged about it): I liked it, but I thought it could use some color, so I hacked a crude version in GIMP and sent it to Mark with a, “Hey, please put this on a t-shirt so I can throw money at you” plea. Lo and behold, he did just that. You can get your own from Mark’s Zazzle store.
Maybrit Illner heute zum “Kalten Krieg um unsere Daten” – mit spannenden Gästen
Authors: Otto Philipp
Published: October 2023

Heute Abend um 22.45 Uhr geht wieder Maybrit Illner auf Sendung. In dieser Woche geht es um den ersten weltweiten Daten- und Überwachungsskandal der Internetgeschichte. Die Sendung verspricht kein übliches Talkshowgewohnheits-blabla zu werden. Dafür sorgen unter anderem die Gäste.
What is an ad-hominem attack?
Authors: Taylor Mike
Published: October 2023

I recently handled the revisions on a paper that hopefully will be in press very soon. One of the review comments was “Be very careful not to make  ad hominem  attacks”. I was a bit surprised to see that — I wasn’t aware that I’d made any — so I went back over the manuscript, and sure enough, there were no  ad hom  s in there. There was criticism, though, and I think that’s what the reviewer meant.
Brian Engh: Stomp time!
Authors: Wedel Matt
Published: October 2023

Because “here’s that Brian Engh sketch of a sauropod literally stomping the guts out of a theropod you ordered” was a bit ungainly for a post title.
Beards of the Mesozoic: Bob Nicholls edition
Authors: Wedel Matt
Published: October 2023

We’ve blogged a lot of Bob Nicholls‘ art (here, here, and here) and we’ll probably continue to do so for the foreseeable future. We don’t have much choice: he keeps drawing awesome things and giving us permission to post them. Like this defiantly shaggy  Apatosaurus  , which was probably the star of the Morrison version of  Duck Dynasty  . Writes Bob: Well, I think it’s awesome.
Here’s that Brachiosaurus altithorax skeleton you ordered
Authors: Wedel Matt
Published: October 2023

Here’s the mounted skeleton of  Brachiosaurus altithorax  outside the Field Museum in Chicago, based on the holotype FMNH P25107, with missing parts filled in from the mounted  Giraffatitan brancai  MB.R.2181 at the Museum für Naturkunde Berlin. To see it with humans and other animals for scale, go here. And here’s the same thing in silhouette.
Museum of Osteology: Tegu skull
Authors: Wedel Matt
Published: October 2023

Another shot from my visit last month to the Museum of Osteology in Oklahoma City: the business end of a tegu (  Tupinambis  ). Lots of cool stuff in this pic: heterodont dentition, wacky sclerotic ossicles, and some sweet neurovascular foramina along the maxilla. Someone should knock out a shrink-wrapped life restoration, a la  All Todays  .
Sauropods stomping theropods: Bryan Riolo’s Chaos Gigantes
Authors: Wedel Matt
Published: October 2023

This beauty is by Bryan Riolo, aka Algoroth on DeviantART, who also let me use his giant space Cthulhu for my Collect Call of Cthulhu over on Echo Station 5-7.  Update:  and here, belatedly, is a link to the piece on DA, with Bryan’s thoughts on it. I love the sense of scale here, with paralititans striding through the surf, the chiaroscuro, and the sheer amount of stuff going on. It reminds me of William Stout’s murals, and lots
Two SV-POW! papers in the new PLOS Collection!
Authors: Taylor Mike
Published: October 2023

This is an exciting day: the new PLOS Collection on sauropod gigantism is published to coincide with the start of this year’s SVP meeting! Like all PLOS papers, the contents are free to the world: free to read and to re-use. (What is a Collection?
iRights in China: „Lost in Translation” am 24. Juli in Peking
Authors: iRights.info Redaktion
Published: October 2023

Aus chinesischer Perspektive stellt der Westen eine Drohkulisse dar. Aus westlicher Perspektive macht China Angst. Wie lässt sich spezifisch darüber sprechen? Dieser Frage geht am 24. Juli die Konferenz „Lost in Translation” nach.
All right, then, this is the first ever adequately illustrated vertebra of Giraffatitan
Authors: Taylor Mike
Published: October 2023

I thought I’d done a decent job of illustrating MB.R.2180:C5 last time, but Wedel was not satisfied, demanding ventral and right-lateral views as well as the provided right lateral, anterior, posterior and dorsal. All right then: here you go! Here once more, for comparison, is Janensch’s (1950) illustration of the same vertebra:
Tutorial 25: How to Study for Gross Anatomy (and Just About Everything Else)
Authors: Wedel Matt
Published: October 2023

I started teaching fifteen years ago, as a graduate student at the University of Oklahoma in the spring of 1998. This document is a summary of everything I’ve learned about how students learn from then up until now. I’m setting it down in print because I found myself giving the same advice over and over again to students in one-on-one sessions—and at least for some of them, it’s made a difference. Here’s the summary.