bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tingkat Depresi, Cemas, dan Stres pada Pasien Kanker yang Menjalani Kemoterapi
Authors: Mastan Johanes A. , Rotty Linda W. A. , Haroen Harlinda , Hendratta Cecilia , Lasut Pearla 
Published: February 2024

Abstract: Chemotherapy in cancer patients has psychological impacts which are depression, anxiety and stress. This study aimed to evaluate the levels of depression, anxiety and stress in cancer patients undergoing chemotherapy. This was a descriptive study with a cross-sectional design. Samples were obtained by using non-probability sampling with purposive sampling technique. Subjects were cancer patients undergoing chemotherapy at Prof. Dr. R. D. Kandou Hospital aged over 18 years old, not pregnant, and not having an infectious disease. Assessment of levels of depression, anxiety and stress using DASS-42. The results obtained 62 patients undergoing chemotherapy; 47 were women (75.8%). The median and interquartile age range was 52 (14.75) years and body mass index (BMI) was 22 (5.17), 42 patients having an income <3.5 million rupiahs (67%), 36 patients with duration of illness >1 year (58%) and the majority of patients (79%) were in marital status. Among subjects, 23% experienced depression, 40% experienced generalized anxiety disorder, and 21% experienced stress. In conclusion, patients undergoing chemotherapy can experience depression, anxiety and stress disorders.
Keywords: depression; anxiety; stress; chemotherapy; cancer patients

Abstrak: Kemoterapi pada pasien kanker memiliki dampak psikis yaitu depresi, cemas, dan stres. Penelitian ini bertujuan mengetahui tingkat depresi, cemas, dan stres pada pasien kanker yang menjalani kemoterapi. Jenis penelitian ialah deskriptif dengan desain potong lintang. Sampel diperoleh menggunakan non-probability sampling dengan teknik purposive sampling. Subjek penelitian ialah pasien kanker yang menjalani kemoterapi di RSUP Prof. Dr. R. D. Kandou dengan usia di atas 18 tahun, tidak hamil, dan tidak sedang dalam pengobatan penyakit infeksi. Penilaian tingkat depresi, cemas, dan stres menggunakan DASS-42. Hasil penelitian mendapatkan­ 62 pasien yang menjalani kemoterapi; 47 pasien ialah perempuan (75,8%). Median dan interquartil range usia ialah 52 (14,75) tahun dan IMT 22(5,17), dengan 42 pasien mempunyai pendapatan <3,5 juta rupiah (67%), 36 pasien dengan lama sakit >1 tahun (58%) dan sebagian besar pasien (79%) dalam status kawin. Sebanyak 23% pasien mengalami depresi, 40% gangguan cemas menyeluruh, dan 21% mengalami stres. Simpulan penelitian ini ialah pasien yang menjalani kemoterapi dapat mengalami gangguan depresi, cemas dan stres.
Kata kunci: depresi; cemas; stres; kemoterapi; pasien kanker
ANALISIS PENGARUH FAKTOR – FAKTOR PENENTU KONTRAKTOR UNTUK KEMENANGAN TENDER
Authors: Pratama Alfian , Plamonia Nicco 
Published: February 2024

Proses lelang atau tender ialah suatu prosedur untuk pemilihan penyedia barang/jasa yang dilakukan secara terbuka dan diikuti oleh seluruh penyedia barang/jasa yang telah memenuhi syarat oleh panitia tender. Permasalahan utama yang sering terjadi yaitu kurang lengkapnya berkas tender ditambah dengan faktor lain seperti kenaikan harga, pengalaman kontraktor dan lain sebagainya yang dapat mempengaruhi keberhasilan dan kegagalan kontraktor mendapatkan keuntungan karena faktor – faktor ini tidak bisa diprediksi dengan pasti. Penelitian ini bertujuan untuk mengidentifikasi faktor apa saja yang mempengaruhi kemenangan tender online dan mengetahui faktor yang pengaruhnya paling dominan saat melakukan tender online. Metode penelitian yang digunakan adalah analisis statistik deskriptif, uji validitas, uji reliabilitas dan analisis faktor. Faktor yang mempengaruhi kemenangan kontraktor saat melakukan tender di Provinsi DKI Jakarta terdiri dari 4 identifikasi faktor yaitu: Administrasi, Teknis, Harga dan Lainnya serta 6 faktor baru dari hasil ekstraksi faktor, yaitu: Faktor I terbentuk dari 7 variabel (X1, X3, X7, X9, X15 dan X18); Faktor II terbentuk dari 6 variabel (X2, X5, X11, X14, X16 dan X17); Faktor III terbentuk dari 4 variabel (X4, X10, X19 dan X21); Faktor IV terbentuk dari 4 variabel (X8, X12, X13 dan X20); Faktor V terbentuk dari 2 variabel (X23 dan X25); & Faktor VI terbentuk dari 2 variabel (X22 dan X24). Faktor yang pengaruhnya paling menentukan adalah faktor 1 dengan nilai eigenvalues 7,831 karena dapat menjelaskan 31,322% variabilitas seluruh variabel dan memiliki kemampuan paling besar/sangat tinggi pengaruhnya terhadap kemenangan kontraktor saat melakukan tender online di Provinsi DKI Jakarta.
ANALISIS PERBANDINGAN VOLUME DAN BIAYA PADA PEKERJAAN ARSITEKTUR
Authors: Agustin Atika , Plamonia Nicco , Andreas Azaria 
Published: February 2024

Pembangunan sebuah proyek diperlukan perencanaan yang baik dengan mempertimbangkan waktu yang efisien, biaya yang efisien dan mutu yang berkualitas sehingga didapat suatu proyek konstruksi yang ekonomis, serta dapat diperhitungkan untuk melakukan sebuah pembangunan proyek agar tidak terjadi adanya perselisihan nilai estimasi yang signifikan dari anggaran yang disusun. Estimator dituntuti mempunyaii keahliani dalam perhitungani volume pekerjaan, penilaiani proyek konstruksi, dan keahliani spesifiki lainnya yang tidak lepas dari bantuan software yang berhubungan dengan perhitungan, pengolahan, dan penyajian data. Tujuan penelitian ini untuk menganalisis perbandingan perhitungan volume dan total biaya pada pekerjaan arsitektur menggunakan Software Autocad dengan Software Planswift dan menganalisis pemilihan metode yang lebih efisien antara Software Autocad atau Software Planswift dari segi waktu,biaya dan user. Metode penelitian dengan melakukan perhitungan quantity pekerjaan pada software autocad dan software planswift pada studi kasus proyek Apartement The Spring Residences Ciputat ini berlokasi di Jl. Otista Raya No.23, Kecamatan Ciputat Kota Tanggerang Selatan, Banten 15311. Proyek ini terdiri dari 24 lantai sedangkan perhitungan sebanyak 10 lantai. Selisih hasil perhitungan volume antara software autocad dan software planswift sebesar 546,21 m2 atau 1,16% untuk pekerjaan dinding dan lantai sebesar 274,61 m2 atau 8,26 %, dan pekerjaan plafond 23,83 m2 atau 0,35%. Total selisih biaya pekerjaan arsitektur sebesar Rp.168.677.357 dimana biaya ini lebih besar software autocad dibandingkan software planswift.
ANALISIS PERBANDINGAN PERCEPATAN PEKERJAAN PROYEK MENGGUNAKAN METODE TIME COST TRADE OFF, PENAMBAHAN SHIFT, DAN FAST TRACK
Authors: Sanjaya Ario , Dofir Akhmad 
Published: February 2024

Pertumbuhan pusat perbelanjaan modern merupakan fenomena perdagangan dan jasa yang biasa ditemukan di kota-kota kecil maupun di kota-kota besar di seluruh dunia. Sebuah pusat perbelanjaan modern yang dikenal sebagai "Mall" berkembang di kota-kota di Indonesia. Pada pelaksanaan konstruksi terkadang terjadi keterlambatan, bahkan bisa dikatakan hampir 80% mengalami keterlambatan. Jika proyek mengalami keterlambatan, dapat dipastikan proyek tersebut mengalami keterlambatan dalam penyelesaiannya sehingga dibutuhkan percepatan pelaksanaan proyek. Dengan hal tersebut, maka diperlukan penelitian untuk menganalisis perbandingan terhadap efektivitas biaya anggaran dan waktu pekerjaan proyek menggunakan metode Time Cost Trade Off, penambahan Shift pekerja, dan Fast Track. Dalam studi kasus Cibinong City Mall ini, pengembangan proyek mengalami hambatan di lapangan yang menyebabkan keterlambatan pekerjaan. Dengan membandingkan ketiga metode tersebut dapat membantu manajemen proyek dalam penentuan alternatif yang baik dalam meminimalisir biaya dan waktu penyelesaian proyek, terutama pada situasi di mana pekerjaan kritis selesai secepat mungkin. Hasil durasi waktu percepatan pekerjaan arsitektur hotel menggunakan metode TCTO menghasilkan efisiensi waktu senilai 2.71% dari durasi normal, pada penambahan jam kerja menghasilkan total penambahan biaya 6,677%, sedangkan penambahan tenaga kerja menghasilkan total penambahan biaya 0,12%. Alternatif percepatan dengan metode Shift menghasilkan waktu efisiensi percepatan 18.605%, dengan total penambahan biaya sebesar 1.18%. Alternatif percepatan dengan metode Fast Track menghasilkan efisiensi percepatan 4.264%, dengan overhead senilai 1.852%.
Analisa Coeficient of Performance (COP) Pada Mesin Pendingin Pembuat Ice Slurry
Authors: PARTAHI OLOAN ALDYN CLINTON , Muslim Muswar , Buwono Ayom 
Published: February 2024

Ice slurry muncul sebagai alternatif utama yang sangat mendukung kinerja nelayan dimulai dari bahan baku yang bisa langsung diambil ketika ditengah laut dan bertambahnya ruang pada kapal untuk penyimpanan ikan tersebut. Mesin Ice Slurry ini sebagai alat eksperimen untuk nelayan, nantinya pada penelitian kali ini akan dibuat variasi putaran pada pengaduk es (scrapper) dimana variasinya yaitu 500 rpm, 1000 rpm, 1200 rpm pada motor listrik yang kemudian direduksi oleh gearbox yang memiliki ratio 1 : 30 dan dibuktikan dengan volume air laut pada setiap variasi yang ditetapkan yaitu 20 liter dengan waktu 90 menit. Kualitas pendinginan yang dihasilkan dapat di tentukan oleh nilai COP yang mana hasil dari variasi tersebut kemudian dianalisis dan di dapat hasil nilai COP terbaik adalah 10,24 dengan putaran 1200 RPM.
Fabrication of a wider bandgap θ-Al2O3 by oxidation of ultrathin AlN films for leakage current reduction
Authors: Nakajima Yusuke , Takashima Akira , Noguchi Masaki , Isogai Tatsunori 
Published: February 2024

Abstract
Aluminum oxide (Al2O3) films were fabricated through the oxidation of ultrathin aluminum nitride (AlN) films. The fabricated films exhibited a leakage current reduction compared to that of conventional Al2O3 films fabricated using atomic layer deposition. This reduction in the leakage current can be attributed to the formation of θ-Al2O3, which has a wider-bandgap than γ-Al2O3. The formation of θ-Al2O3 was attributed to the residual stress caused by the oxidation of the AlN thin films.
Improvement of film quality and solar cell properties of perovskite by the addition of N-benzylhydroxylamine
Authors: Nagasawa Keisuke , Sano Takeshi , Chau Viet Nguyen , Okuyama Yutaka , Sayama Yuya , Oikawa Ryosuke , Hoshi Keigo , Chiba Takayuki , Kido Junji 
Published: February 2024

Abstract
In this study on perovskite solar cells (PVSCs), we incorporate N-benzylhydroxylamine (N-BzHoA) as an additive into the precursor solution. The addition of N-BzHoA suppressed the formation of unwanted PbI2 and δ-phase perovskite without affecting the band gap, confirming uniform and large grains in the perovskite film. The fabricated inverted PVSCs exhibited remarkably improved properties compared to the control device, with a power conversion efficiency of 17.49%, reduced hysteresis, and more than 89% retention of the initial capacity after 100 h of light exposure. Thus, this study highlights the effectiveness of N-BzHoA as an effective additive for inverted PVSCs.
Lightweight and high-precision materials property prediction using pre-trained Graph Neural Networks and its application to a small dataset
Authors: Nishio Kento , Shibata Kiyou , Mizoguchi Teruyasu 
Published: February 2024

Abstract
Large data sets are essential for building deep learning models. However, generating large datasets with higher theoretical levels and larger computational models remains difficult due to the high cost of first-principles calculation. Here, we propose a lightweight and highly accurate machine learning approach using pre-trained Graph Neural Networks (GNNs) for industrially important but difficult to scale models. The proposed method was applied to a small dataset of graphene surface systems containing surface defects, and achieved comparable accuracy with six orders of magnitude and faster learning than when the GNN was trained from scratch.
A.I., FASHION AND RIGHTS
Authors: Cianfanelli Elisabetta 
Published: February 2024

Fashion Design, both in its theoretical foundation and practical application, is experiencing a significant cognitive transformation. This evolution is best interpreted not simply as a mere transition but as a continuous process of adaptation that affects professions, processes, and cultures (Anantrasirichai & Bull, 2022). This ongoing change necessitates a critical re-evaluation and recalibration of current ontological and epistemological frameworks (Dufva & Dufva, 2019; Kraus et al., 2021), emphasizing the need to redefine and reconsider the principles and methodologies in the Fashion Design field. In this context, the emergence of artificial intelligence (AI) signifies the onset of an era of evolutions and revolutions in Fashion design thinking and practice, characterized by shifts, advancements, and radical changes (Ozmen Garibay et al., 2023). Fashion, traditionally reflective of societal, cultural, and economic dynamics, is now at a pivotal point due to the integration of AI into its processes. This transformation, both rapid and extensive, is reshaping the entire spectrum of the fashion industry, influencing various aspects such as design, production, customer purchasing experiences, and communication strategies (Särmäkari & Vänskä, 2022; Särmäkari, 2021).
The second issue of Fashion Highlight Journal situates itself within this evolving landscape, endeavoring to unravel and comprehend the multifaceted implications of integrating artificial intelligence in the realm of fashion design. Through the diverse perspectives and insights offered by its contributors, this issue aims to delve into the intricate ways AI is reshaping fashion design’s traditional methodologies and creative processes. This issue particularly aims to encourage scholarly discussion regarding the interplay between fashion, artificial intelligence, and rights. It examines how the fashion sector, within a rapidly changing environment, is addressing key concerns related to pri vacy, intellectual property, inclusivity, skills development, and responsibility. A significant area of focus is exploring AI’s potential to maintain diversity, function inclusively, and protect individual identities, highlighting its critical role in the context of contemporary fashion.
TURİZM İŞLETMELERİNDE Rekreasyon ve Animasyon
Authors: Turan Torun Burcu , Yeşilyurt Cem , Yeşilyurt Hülya , Çalışkan Caner , Koç Pelin , Çelik Sabri , Meriç Sağbetullah , Şahin Sedat 
Published: February 2024

Rekreasyona Giriş
Sabri ÇELİK

Rekreasyonun Tarihsel Gelişimi
Sağbetullah MERİÇ

Rekreasyon: Etkileşim Alanları
Hülya YEŞİLYURT
Caner ÇALIŞKAN

Rekreasyon ve Kamusal Alanlar
Pelin KOÇ

Animasyona Giriş
Songül ÖZER

Animasyon Hizmetlerinin Yönetimi
Burcu TURAN TORUN

Turizm ve Animasyon
Cem YEŞİLYURT

Otel İşletmelerinde Animasyon Hizmetleri ve Örnekleri
Sedat ŞAHİN
Besin Takviyelerine Bilimsel Bakış
Authors: Fidancı Ayşegül , Akpınar Büşranur , Kutsal Ece , Bal Ekin , Yıldırım Elif , Unutmaz Duman Emel , Ergin Esin Zekiye , Paksoy Feyza Nur , Derici Gizem Ece , Ergene Gözde , Akgün Ece , Güngör Hümeyra , Yiğit Kübra , Keser Muteber Gizem , Çeker Rumeysa , Uçak Selin , Çağlayan Ural Pınar , Andaç Öztürk Serap , Yıldız Şenol 
Published: February 2024

Besin Takviyesi ve Sağlıklı Beslenmenin Besin Takviyeleri ile İlişkisi
Şenol YILDIZ

A, D, E, K Vitaminleri
Ayşegül FİDANCI

C Vitamini
Emel UNUTMAZ DUMAN

B1, B2 ve B3 Vitaminleri
Kübra YİĞİT

B5, B6, B7 Vitaminleri
Muteber Gizem KESER

Folik Asit
Gizem Ece DERİCİ

B12 Vitamini (Kobalamin)
Ekin BAL

EPA, DHA, DPA
Feyza Nur PAKSOY

Konjuge Linoleik Asit
Elif YILDIRIM

Selenyum
Ece KUTSAL

İyot
Gözde ERGENE

Çinko
Hatice Ece AKGÜN

Kalsiyum
Serap ANDAÇ ÖZTÜRK
Pınar ÇAĞLAYAN URAL

Demir
Selin UÇAK

Magnezyum
Büşranur AKPINAR

Kurkumin ve Ginkgo Biloba
Esin Zekiye ERGİN

Sarı Kantaron (St John’s Wort), Resveratrol ve Ginseng
Rumeysa ÇEKER

Glukozamin ve Kolajen
Kübra YİĞİT

Probiyotikler
Hümeyra GÜNGÖR
Doğal Açıklık Cerrahileri
Authors: Karaca İbrahim , Yassa Murat , Çalışkan Raziye Kıcık , Tunca Aysun Fendal , Alay İsmail , Tohma Yusuf Aytaç , Zeyneloğlu Hulusi Bülent , Cengiz Hüseyin , Demirayak Gökhan , Yılmaz Serhan , Aydın Hüsnü , Dural Ahmet Cem , Avcı Hakan , Yenice Mustafa Gürkan , Gözümoğulları Arif Onur , Yıldız Şükrü , Yıldız Güneş Özlem 
Published: February 2024

Doğal Acıklık Cerrahilerinin Tarihçesi
İbrahim KARACA

Doğal Acıklık Cerrahilerinde Anatomi
Murat YASSA

Doğal Acıklık Cerrahilerinde Kullanılan Aletler
Raziye Kıcık ÇALIŞKAN

Uterin Patolojilerde Doğal Acıklık Cerrahileri
Cihan KAYA
Aysun Fendal TUNCA

Adneksiyel Patolojilerde Doğal Acıklık Cerrahileri
İsmail ALAY

İnfertilitede Doğal Acıklık Cerrahileri Uygulamaları
Yusuf Aytaç TOHMA
Hulusi Bülent ZEYNELOĞLU

Urojinekoloji Pratiğinde Doğal Acıklık Cerrahileri
Hüseyin CENGİZ

Jinekolojik Onkolojide Doğal Acıklık Cerrahileri
Gökhan DEMİRAYAK

Kolorektal Hastalıklarda Doğal Acıklık Cerrahisi: TaTME
Serhan YILMAZ

Transoral Tiroid ve Paratiroid Cerrahileri
Hüsnü AYDIN
Ahmet Cem DURAL

Kulak Burun Boğaz Hastalıklarında Doğal Acıklık Cerrahileri
Hakan AVCI

Üroloji Uygulamalarında Doğal Acıklık Cerrahileri
Mustafa Gürkan YENİCE
Arif Onur GÖZÜMOĞULLARI

Doku ve Organ Cıkarma Yolu Olarak Doğal Acıklıklar
Şükrü YILDIZ

Doğal Acıklık Cerrahilerinde Anestezi Uygulamaları
Güneş Özlem YILDIZ
Planetary Complexity Revealed by the Joint Differential Entropy of Eigencolors
Authors: Segal Gary , Parkinson David , Bartlett Stuart 
Published: February 2024

Abstract
We propose a measure, the joint differential entropy of eigencolors, for determining the spatial complexity of exoplanets using only spatially unresolved light-curve data. The measure can be used to search for habitable planets, based on the premise of a potential association between life and exoplanet complexity. We present an analysis using disk-integrated light curves from Earth, developed in previous studies, as a proxy for exoplanet data. We show that this quantity is distinct from previous measures of exoplanet complexity due to its sensitivity to spatial information that is masked by features with large mutual information between wavelengths, such as cloud cover. The measure has a natural upper limit and appears to avoid a strong bias toward specific planetary features. This makes it a novel and generalizable method, which, when combined with other methods, can broaden the available indicators of habitability.
Orbital Torus Imaging: Acceleration, Density, and Dark Matter in the Galactic Disk Measured with Element Abundance Gradients
Authors: Horta Danny , Price-Whelan Adrian M. , Hogg David W. , Johnston Kathryn V. , Widrow Lawrence , Dalcanton Julianne J. , Ness Melissa K. , Hunt Jason A. S. 
Published: February 2024

Abstract
Under the assumption of a simple and time-invariant gravitational potential, many Galactic dynamics techniques infer the milky Way’s mass and dark matter distributions from stellar kinematic observations. These methods typically rely on parameterized potential models of the Galaxy and must take into account nontrivial survey selection effects, because they make use of the density of stars in phase space. Large-scale spectroscopic surveys now supply information beyond kinematics in the form of precise stellar label measurements (especially element abundances). These element abundances are known to correlate with orbital actions or other dynamical invariants. Here, we use the Orbital Torus Imaging framework that uses abundance gradients in phase space to map orbits. In many cases these gradients can be measured without detailed knowledge of the selection function. We use stellar surface abundances from the Apache Point Observatory Galactic Evolution Experiment survey combined with kinematic data from the Gaia mission. Our method reveals the vertical (z-direction) orbital structure in the Galaxy and enables empirical measurements of the vertical acceleration field and orbital frequencies in the disk. From these measurements, we infer the total surface mass density, Σ, and midplane volume density, ρ
0, as a function of Galactocentric radius and height. Around the Sun, we find

Σ

⊙

(
z
=
1.1

kpc
)
=

72

−
9

+
6

M

⊙

pc

−
2

and

ρ

⊙

(
z
=
0
)
=

0.081

−
0.009

+
0.015

M

⊙

pc

−
3

using the most constraining abundance ratio, [Mg/Fe]. This corresponds to a dark matter contribution in surface density of Σ⊙,DM(z = 1.1 kpc) = 24 ± 4 M
⊙ pc−2, and in total volume mass density of ρ
⊙,DM(z = 0) = 0.011 ± 0.002 M
⊙ pc−3. Moreover, using these mass density values we estimate the scale length of the low-α disk to be h

R
= 2.24 ± 0.06 kpc.
Multispacecraft Energetic Particle Enhancements Associated with a Single Corotating Interaction Region
Authors: Starkey M. J. , Dayeh M. A. , Desai M. I. , Bučík R. , Hart S. T. , Elliott H. A. 
Published: February 2024

Abstract
The radial evolution of particles accelerated at corotating interaction regions (CIRs) is not fully understood, particularly the distance range over which this particle acceleration occurs and how the energy spectra are modulated by transport through the inner heliosphere. Here, we present observations of energetic proton enhancements associated with a CIR observed by Parker Solar Probe on 2021 April 25 during the inbound leg of its orbit near ∼46 R
s (∼0.21 au). The CIR is identified at additional spacecraft (Solar Terrestrial Relations Observatory, STEREO-A; Solar Orbiter, SolO; and Advanced Composition Explorer, ACE) using a corotation time delay estimation, and energetic proton spectra from each spacecraft are compared. We find that (1) energetic protons are observed near 46 R
s streaming sunward ahead of the CIR; (2) the CIR persists for at least one solar rotation and the corresponding energetic proton enhancements are observed at STEREO-A, SolO, and ACE; and (3) the proton energy spectrum is steeper near the Sun and hardens near 1 au. This observation presents the closest in situ energetic particle observation of a CIR to the Sun ever recorded. Results presented here suggest that particles can be accelerated by CIR structures within 1 au and these particles can penetrate very deep into the inner heliosphere.
Three-dimensional Velocity Diagnostics to Constrain the Type Ia Origin of Tycho's Supernova Remnant
Authors: Uchida Hiroyuki , Kasuga Tomoaki , Maeda Keiichi , Lee Shiu-Hang , Tanaka Takaaki , Bamba Aya 
Published: February 2024

Abstract
While various methods have been proposed to disentangle the progenitor system for Type Ia supernovae, their origin is still unclear. A circumstellar environment is key to distinguishing between the double-degenerate and single-degenerate (SD) scenarios since a dense wind cavity is expected only in the case of the SD system. We perform spatially resolved X-ray spectroscopy of Tycho’s supernova remnant (SNR) with XMM-Newton and reveal the three-dimensional velocity structure of the expanding shock-heated ejecta measured from Doppler-broadened lines of intermediate-mass elements. Obtained velocity profiles are fairly consistent with those expected from a uniformly expanding ejecta model near the center, whereas we discover a rapid deceleration (∼4000 to ∼1000 km s−1) near the edge of the remnant in almost every direction. The result strongly supports the presence of a dense wall entirely surrounding the remnant, which is confirmed also by our hydrodynamical simulation. We thus conclude that Tycho’s SNR is likely of SD origin. Our new method will be useful for understanding progenitor systems of Type Ia SNRs in the era of high-angular/energy-resolution X-ray astronomy with microcalorimeters.