A Novel “回” Pattern Branch Antenna for 3G\4G\WLAN\Bluetooth\Navigation Applications

This study proposes and designs a multiband branch antenna with a structure that imitates the Chinese classical pattern structure. The antenna radiator’s structure is a symmetrical rectangular stub fused with a Chinese classical pattern structure, and the rectangular stub is bent so that the outer and inner stubs are coupled to each other to generate multiple frequency bands. Microstrip line feeding is the feeding mode, and the grounding plate is a trapezoidal structure formed by subtracting two triangles from a rectangle. The overall size of the antenna is 60 × 60 × 1.6 mm3, and the dielectric board adopts FR4. The substrate dielectric constant εr = 4.4, the thickness h = 1.6 mm, and the dielectric loss tangent tanδ = 0.02. For antenna modeling and parameter optimization, HFSS electromagnetic simulation software is used. The antenna can cover 1.49 to 1.60 GHz, 1.87 to 2.51 GHz, and 4.63 to 5.34 GHz and generate three main frequencies: 1.57, 2.15, and 5.06 GHz, according to test result. The antenna has omnidirectional radiation characteristics and can be widely used in future mobile communication network coverage.

STRUKTUR KALIMAT TUNGGAL BAHASA KANUM SOTA THE STRUCTURE OF THE SIMPLE SENTENCE OF KANUM SOTA LANGUAGE

Kanum Sota language is spoken by speaker aroun Sota District, Merauke, Papua Province. This study uses descriptive method to describe the structure of the simple sentence of Kanum Sota language. The result of analysis of the function of simple sentence elements shows us that the structures of simple sentence of Kanum Sota are Subject + Predicate (S+P), Subject + Object + Predicate (S + O + P), Subject + Predicate + Object (S + P + O), Subject + Adverb + Predicate (S + Adv. + P), and Subject + Obejct + Predicate + Adverb (S + O + P + Adv.). By simple sentence pattern, structure and kind of simple sentence of the Kanum Sota is known as follows: (1) transitive sentence whose pattern S:n/pron./NP + O:n/pron./NP + P: trans.Verb, and S:n/pron/NP + P:trans.verb + O:n/pron/NP, (2) Intransitive sentence pattern, S:n/pron/NP + P: intrans.verb, (3) descriptive sentence, S:n/pron/NP + P: adj./adj.phrase, (4) postposition sentence, S:n/pron/NP + P:postpositional phrase, (5) possessive sentence S:n/NP + P:possessive, (6) equative sentence S:n/pron/NP + P:n, and (7) numeral sentence S:n/pron/NP + P:num. Keywords: function, category, structure, simple sentence Abstrak Bahasa Kanum Sota digunakan oleh penutur yang tinggal di Distrik Sota, Kabupaten Merauke, Provinsi Papua. Penelitian ini menggunakana metode deskriptif yang bertujuan untuk mendeskripsikan struktur kalimat tunggal bahasa Kanum Sota. Berdasarkan hasil analisis fungsi unsur-unsur pembentuk kalimat tunggal, dapat diketahui struktur kalimat tunggal bahasa Kanum Sota, yaitu Subjek + Predikat (S + P), Subjek + Objek + Predikat (S + O + P), Subjek + Predikat + Objek (S + P + O), Subjek + Keterangan + Predikat (S + K + P), dan Subjek + Objek + Predikat + Keterangan (S + O + P + K). Berdasarkan pola dasar kalimat tunggal, dapat diketahui jenis kalimat dan struktur kalimat tunggal bahasa Kanum Sota, yaitu kalimat transitif berpola S:n/pron/fr.n + O:n/pron/fr.n + P:v.transitif terdapat juga kalimat transitif yang berpola S:n/pron/fr.n + P:v.transitif + O:n/pron/fr.n, kalimat intransitif berpola S:n/pron/fr.n + P:v intransitif, kalimat deskriptif berpola S:n/pron/fr.n + P:adj/fr.adj, kalimat posposisional berpola S:n/pron/fr.n + P:fr.posp, kalimat posesif berpola S:n/fr.n + P:Posf, kalimat ekuatif berpola S:n/pron/fr.n + P:n, dan kalimat numeralia berpola S:n/pron/fr.n + P:num. Kata kunci: fungsi, kategori, struktur, kalimat tunggal

Gender prevalence and pattern structure of various online behaviors among adolescents in Abakan

Summary. The increased maladaptive Internet use and associated psychosomatic disorders in modern adolescents is an urgent medical problem. The aim of the study was to research the gender prevalence and pattern structure of various types of online behavior in adolescents from Abakan (Khakassia). Material and methods. A one-time screening examination of random samples of students from 4 schools in the city of Abakan was carried out from April to May 2019. It was examined 1360 adolescents (49.5% of boys and 50.5% of girls) aged 12-18 years (mean age 14.7 ± 1.3). Online behavior was assessed using the Chen Internet Addiction Scale (CIAS) based on the total CIAS score. There were 2 groups (boys and girls) for the indicators to be analyzed, with the data processed using the “Statistica 12” program. Results. Adaptive Internet use (AIU) is typical for 56.5% of Abakan adolescents, Non-adaptive maladaptive (NIU) — for 37.6% and Internet-dependent, pathological Internet use (PIU) — for 5.9%. The incidence and pattern structure of various types of online behavior are associated with gender. The prevalence of maladaptive types of online behavior is higher among girls: non-adaptive (42.4% versus 32.8% in boys) and pathological (8.0% versus 3.7%). There are significant gender differences in the Com, Wit, Tol scales, key symptoms of Internet addiction (KSIA), Problems Associated with Internet Addiction (PAIA) and the total CIAS score of the Chen scale. Girls have higher average scores for all subscales of the Chen questionnaire, i.e. both key symptoms of Internet addiction, and the total CIAS score. Conclusion. The prevalence of maladaptive types of online behavior among adolescents in Abakan and also a high association with gender confirm the relevance of the problem and indicate the further research in the given area is needed.

Prospective K-8 teachers’ noticing of student justifications and generalizations in the context of analyzing written artifacts and video-records

Background This paper contributes to current discussions about supporting prospective teachers (PSTs) in developing skills of noticing students’ mathematical thinking. We draw attention to PSTs’ initial noticing skills (prior to instruction focused on supporting noticing) as PSTs engage in analyzing written artifacts of student work and video-records. We examined and compared PSTs’ noticing skills as they analyzed how students reason about, generalize, and justify generalizations of figural patterns given student written work and video records. We identified aspects of student thinking about generalizations and justifications, which PSTs addressed and interpreted. We also examined how PSTs respond to students as they analyze student thinking given written artifacts of student work or video-records of small group discussions, and we identified the foci of PSTs’ responding practice. Results Our data revealed that PSTs’ initial noticing skills of student generalizations and justifications differed while accounting for ways in which student thinking was externalized (written work or video-records). PSTs’ attending-and-interpreting and their responding practices were focused on mathematically significant aspects of student thinking to a greater extent in the context of analyzing written artifacts compared to video records. While analyzing students’ written work, PSTs demonstrated greater attention to ways in which students analyzed patterns, students’ generalization strategies, and justifications linked to an understanding of the pattern structure, compared to analyzing student thinking captured via videos. Conclusion Our results document that without providing any intentional support for PSTs’ noticing skills, PSTs are more deliberate to focus on mathematically significant aspects of student thinking while analyzing written artifacts of student work compared to video-records. We believe that the analysis of student written work might demand from PSTs to be more analytical. While examining written representations, PSTs have to reconstruct students’ reasoning. Unlike the videos where the students tell or use gestures to express their thinking, written work provides fewer clues about student thinking. Thus, written work demands a deeper level of engagement from PSTs as they strive to understand student reasoning. Our study extends research on PSTs’ noticing skills by documenting differences in PSTs’ noticing in relation to the nature of artifacts of student work that PSTs analyze. Our work also adds to prior research on PSTs’ noticing by characterizing specific aspects of students’ thinking about pattern generalizations and justifications that PSTs address as they analyze student thinking and respond to students.

Direct-writing microporous polymer architectures – print, capture and release

Direct-writing of droplets onto fluid surfaces by inkjet printing to dial-in a required pattern, structure and function into a polymer film.