How Does Learning Happen for People Participating in Adventure Training?

Sammy King Fai Hui,Hoi Yan Cheung 서울대학교 교육연구소 2004 Asia Pacific Education Review Vol.5 No.1

Adventure training has become fashionable over the past few years in Hong Kong. Current Education Reform suggests learning should not be confined to the classroom, and adventure training is viewed as an alternative method to institutional routines for personal and group development. This paper reported a longitudinal study investigating how learning happened for four church members (out of twenty-five participants) purposively selected in an adventure team-building camp. Both quantitative and qualitative instruments were used. Results shed light on: (1) how the constructs of self-efficacy and organizational commitment helped to conceptualize what people meant by a team; (2) how qualitative findings revealed evidence of learning of the four members which could not be observed by quantitative findings; and (3) how participants experienced and learnt from adventure training.

A multi-institutional analysis of sternoclavicular joint coverage following osteomyelitis

Sammy Othman,Omar Elfanagely,Saïd C. Azoury,Geoffrey M. Kozak,Jessica Cunning,Arturo J. Rios-Diaz,Prashanth Palvannan,Patrick Greaney,Matthew P. Jenkins,Doraid Jarrar,Stephen J. Kovach,John P. Fischer 대한성형외과학회 2020 Archives of Plastic Surgery Vol.47 No.5

Background Sternoclavicular joint (SCJ) osteomyelitis is a rare pathology requiring urgent intervention. Several operative approaches have been described with conflicting reports. Here, we present a multi-institutional study utilizing multiple surgical pathways for SCJ reconstruction. Methods A multi-institutional retrospective cohort study was conducted to identify patients who underwent surgical repair for sternoclavicular osteomyelitis between 2008 and 2019. Patients were stratified according to reconstruction approach: single-stage reconstruction with advancement flap and delayed-reconstruction with flap following initial debridement. Demographics, operative approach, type of reconstruction, and postoperative outcomes were analyzed. Results Thirty-two patients were identified. Mean patient age was 56.2±13.8 years and 68.8% were male. The average body mass index (BMI) was 30.0±8.8 kg/m2. The most common infection etiologies were intravenous drug use and bacteremia (both 25%). Fourteen patients (43.8%) underwent one-stage reconstruction and 18 (56.2%) underwent delayed twostaged reconstruction. Both single and delayed-stage groups had comparable rates of reinfection (7.1% vs. 11.1%, respectively), surgical site complications (21.4% vs. 27.8%), readmissions (7.1% vs. 16.6%), and reoperations (7.1% vs. 5.6%; all P>0.05). The single-stage reconstruction group had a significantly lower BMI (26.2±5.7 kg/m2 vs. 32.9±9.1 kg/m2; P<0.05) and trended towards shorter hospital length of stay (11.3 days vs. 17.9 days; P=0.01). Conclusions Both single and delayed-stage approaches are appropriate methods with comparable outcomes for reconstruction for SCJ osteomyelitis. When clinically indicated, a singlestage reconstruction approach may be preferable in order to avoid a second operation as associated with the delayed phase, and possibly shortening total hospital length of stay.

무선 네트워크에서 시퀀스-투-시퀀스 기반 모바일 궤적 예측 모델

( Sammy Yap Xiang Bang ),양희규 ( Huigyu Yang ),( Syed M. Raza ),추현승 ( Hyunseung Choo ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.1

In 5G network environment, proactive mobility management is essential as 5G mobile networks provide new services with ultra-low latency through dense deployment of small cells. The importance of a system that actively controls device handover is emerging and it is essential to predict mobile trajectory during handover. Sequence-to-sequence model is a kind of deep learning model where it converts sequences from one domain to sequences in another domain, and mainly used in natural language processing. In this paper, we developed a system for predicting mobile trajectory in a wireless network environment using sequence-to-sequence model. Handover speed can be increased by utilize our sequence-to-sequence model in actual mobile network environment.

Assessment for learning and for accountability in classrooms: The experience of four Hong Kong primary school curriculum leaders

Sammy King Fai Hui,Gavin T. L. Brown,Sky Wai Man Chan 서울대학교 교육연구소 2017 Asia Pacific Education Review Vol.18 No.1

Hong Kong has been implementing a policy of assessment for learning to counter-balance the strong, high-stakes, summative, and examination-oriented practices of the territory. While the purposes teachers have for various classroom assessment tasks are devoted to this learning premise, their views are bounded by the social expectations of assessment for accountability. This paper reports on a study of the types of assessment tasks used by four primary school curriculum leaders, the nature of assessment for learning in Hong Kong primary school context, and their views of how the tasks could support learning improvement in the accountability era. Results indicate that, consistent with official policy, “improvement” was the dominant reason for using the eight assessment tasks discussed in interviews. However, these tasks also met the functions of “accountability,” consistent with the dominant use of assessment in the Chinese context. It appears that assessment for learning in Hong Kong practice is still bounded by the need to demonstrating school quality through the preparation of students for examinations, which raises questions about the policy’s validity. This paper concludes with factors that hinder a formative learning practice and recommends some follow-up strategies under this improvement-accountability tension.

Serendipity in solution–GQDs zeolitic imidazole frameworks nanocomposites for highly sensitive detection of sulfide ions

Sammi, Heena,Kukkar, Deepak,Singh, Jaskaran,Kukkar, Preeti,Kaur, Rajwinder,Kaur, Harmanpreet,Rawat, Mohit,Singh, Gurjinder,Kim, Ki-Hyun Elsevier 2018 Sensors and actuators. B, Chemical Vol.255 No.3

<P><B>Abstract</B></P> <P>An innovative and facile sensing approach for common inorganic anions present in aqueous media has been developed using nanocomposites of europium doped graphene quantum dots (GQDs:Eu) with zeolitic imidazole frameworks (ZIF-8). GQDs:Eu, prepared initially by solvothermal approach (at <10nm in diameter), exhibited a strong and intense blue emission at 430nm when dispersed in ethanol. ZIF-8 nanocubes, synthesized on a parallel basis, were in a fairly uniform size distribution (e.g., 185nm in diameter). The formation of nanocomposites by surface adsorption (between GQDs:Eu and ZIF-8) led to significant increase in fluorescence intensity as observed through photo-luminescence spectroscopy. Their interactions with anions (e.g., in terms of variations in the fluorescence intensity) were initially checked against sulfide and other anionic species (e.g., Br<SUP>−</SUP>, Cl<SUP>−</SUP>, F<SUP>−</SUP>, and NO<SUB>3</SUB> <SUP>−</SUP>). Among the tested ions, GQDs:Eu-ZIF-8 were found to effectively and sensitively detect sulfide (S<SUP>2−</SUP>) with significantly high turn on fluorescence. The feasibility of this nanosensing system was explored further toward the detection of S<SUP>2−</SUP> ions. These nanocomposites were thus demonstrated to be feasible for solution-based sensing of S<SUP>2−</SUP> ions with high reproducibility and sensitivity at limit of detection (LOD) of 0.12ppm.</P> <P><B>Highlights</B></P> <P> <UL> <LI> An innovative approach for detection of pollutant sulfide ions is proposed. </LI> <LI> The method is built based upon turn on fluorescence intensity of GQDs:Eu in the matrix structure of Zeolitic Imidazole Framework Nanoparticles. </LI> <LI> Among the tested ions (e.g. S<SUP>2−</SUP>, Br<SUP>−</SUP>, Cl<SUP>−</SUP>, F<SUP>−</SUP>, and NO<SUB>3</SUB> <SUP>−</SUP>), the nanocomposites sensitively detect sulfide (S<SUP>2−</SUP>) with significantly high turn on fluorescence. </LI> <LI> This nanocomposite-based sensing method exhibit high reproducibility and sensitivity at limit of detection (LOD) of 0.12ppm. </LI> <LI> This approach can be extended further to the detection of sulfide ions from environmental samples. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>An innovative and facile sensing approach for solution-based sensing of sulfide (S<SUP>2−</SUP>) anions using nanocomposites of europium doped Graphene Quantum Dots (GQDs:Eu) with Zeolitic Imidazole Frameworks (ZIF-8) has been reported. These nanocomposites are thus demonstrated as an efficient platform for solution-based sensing of S<SUP>2−</SUP> ions with high reproducibility and selectivity.</P> <P>[DISPLAY OMISSION]</P>

단방향 및 양방향 순환 신경망의 성능 평가

( Sammy Yap Xiang Bang ),정경희 ( Kyunghee Jung ),추현승 ( Hyunseung Choo ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.1

Case Series Review of the Safety and Effcacy of Endoscopic Ultrasound-Guided Splenic Mass Core Biopsy

Sammy Saab,Youssef Challita,David Holloman,Kelli Hathaway,Michel Kahaleh,Jose Nieto 대한소화기내시경학회 2018 Clinical Endoscopy Vol.51 No.6

Politicization of Sino-African Relations in Kenya and Zambia

Sammy Mwangi Waweru 동덕여자대학교 한중미래연구소 2018 한중미래연구 Vol.10 No.-

중국의 아프리카 연루는 아프리카 사회로부터 강한 지지와 반감을 동시에 불러일으키고 있다. 이 글은 대통령 선거 기간 정치적 지지를 확보하기 위해 중국의 연루를 찬성과 반대의 두 극단으로 정치화시 키는 국가의 사례를 분석하는 것을 목표로 하고 있다. 그 결과 중국 의 지원을 받는 케냐와 잠비아에서 대통령 후보들이 자국 국민의 대 중국 감정을 서로 상반된 목적으로 활용하고 있음을 발견했다. 구체 적으로 중국의 지원이 시민의 삶을 개선시키는 케냐에서는 정치지도 자들이 중국의 역할을 긍정적인 차원에서 적극적으로 활용하는 반면 잠비아의 야당 지도자들은 중국의 역할을 부정적으로 축소시키고 있 음을 발견했다. Chinese involvement in Africa has attracted both support and opposition from different segments of African society including; politicians, policy makers and ordinary citizens. This study examines politicization of Chinese involvement in Africa as means to mobilize political support during presidential election campaigns. It analyzes how and why during a presidential election campaigns there was popular support towards Chinese involvement in one case, as opposed to anti-Chinese sentiments in another. The study finds politicians’ support to Chinese involvement or opposition in form of anti-Chinese rhetoric is determined by how ordinary citizens have been affected by Chinese involvement in a given country. In a condition where Chinese involvement has positively impacted general citizens’ life, citizens have had positive attitude towards Chinese role. It is on this basis of citizens’ positive attitudes towards Chinese involvement that correspondingly influences politician’s popular support towards Chinese role in Africa. The opposite is true where Chinese role has had negative consequences on a local population. Therefore, politicization and spread of anti-Chinese sentiments is as a result of negative consequences of Chinese involvement on ordinary citizens in Africa.

China and U.S. in Africa: A Case of Exaggerated Rivalry

Sammy Mwangi Waweru 한국정치사회연구소 2019 한국과 국제사회 Vol.3 No.1

중국의 부상과 그에 상응하여 세계 각지의 국제무대와 지역 수준에서 중국인의 참여가 증가했다. 이는 중국이 지금까지 미국의 영향력 대체를 위해 노력하고 있다고 알려져 있기 때문에 중국과 미국 사이에 전략적 경쟁과 경쟁의 주장이 설득력을 얻고 있다. 결과적으로 미국이 미국의 영향력과 이익을 보호하기 위해 중국의 개입 증가에 대응해야 한다는 요구가 있었다. 이 연구는 아프리카에 대한 중국의 참여가 증가 하면 대륙에서 미국의 전략적 이익을 대체하는 정도를 조사함으로써 이 논쟁에 기여하는 것을 목표로 하고 있다. 이 연구는 아프리카에 대 한 중국의 개입은 중국이 대륙에서 널리 묘사되고 상상한 것처럼 미국의 이익을 위협할 필요가 없는 틈새시장을 만드는 것을 수반했다고 주장한다. 이는 중국이 현저하게 위협할 수 있는 세계의 다른 전략적 부 분에 비해 미국은 역사적으로 아프리카에 대한 전략적 이해관계가 비교적 미미하다는 점을 전제로 한 것이다. 이런 식으로 볼 때, 아프리카에서의 중국인의 침투 증가는 미국의 핵심 전략적 이익에 즉각적인 위협을 가하지 않았기 때문에, 아프리카에서의 중국 주둔에 대항하기 위해 미국이 측정한 대응을 설명한다. Rise of China has correspondingly seen increased Chinese involvement at global stage and regional levels in different parts of the world. This has attracted claims of strategic competition and rivalry between China and U.S., as China is said to be working towards replacing hitherto U.S. influence. Consequently there have been calls for U.S. to counter increased Chinese involvement to safeguard U.S. influences and interests. This study aims to contribute to this debate by examining the extent to which increased Chinese involvement in Africa has, if any, supplanted U.S. strategic interests in the continent. The study contends that, Chinese involvement in Africa has entailed China creating own niche that does not necessary threaten U.S. interests in the continent as widely portrayed and imagined. This is premised on the fact that, U.S. has historically had relatively minimal strategic interests in Africa as compared to other more strategic parts of the world that China could significantly threaten. Seen in this way, increased Chinese penetration in Africa has not had immediate threats to U.S. core strategic interests, thus explaining U.S. measured response to counter Chinese presence in Africa.

China and U.S. in Africa: A Case of Exaggerated Rivalry

Waweru, Sammy Mwangi Korea Institute of Politics and Society 2019 한국과 국제사회 Vol.3 No.1

중국의 부상과 그에 상응하여 세계 각지의 국제무대와 지역 수준에서 중국인의 참여가 증가했다. 이는 중국이 지금까지 미국의 영향력 대체를 위해 노력하고 있다고 알려져 있기 때문에 중국과 미국 사이에 전략적 경쟁과 경쟁의 주장이 설득력을 얻고 있다. 결과적으로 미국이 미국의 영향력과 이익을 보호하기 위해 중국의 개입 증가에 대응해야 한다는 요구가 있었다. 이 연구는 아프리카에 대한 중국의 참여가 증가하면 대륙에서 미국의 전략적 이익을 대체하는 정도를 조사함으로써 이 논쟁에 기여하는 것을 목표로 하고 있다. 이 연구는 아프리카에 대한 중국의 개입은 중국이 대륙에서 널리 묘사되고 상상한 것처럼 미국의 이익을 위협할 필요가 없는 틈새시장을 만드는 것을 수반했다고 주장한다. 이는 중국이 현저하게 위협할 수 있는 세계의 다른 전략적 부분에 비해 미국은 역사적으로 아프리카에 대한 전략적 이해관계가 비교적 미미하다는 점을 전제로 한 것이다. 이런 식으로 볼 때, 아프리카에서의 중국인의 침투 증가는 미국의 핵심 전략적 이익에 즉각적인 위협을 가하지 않았기 때문에, 아프리카에서의 중국 주둔에 대항하기 위해 미국이 측정한 대응을 설명한다. Rise of China has correspondingly seen increased Chinese involvement at global stage and regional levels in different parts of the world. This has attracted claims of strategic competition and rivalry between China and U.S., as China is said to be working towards replacing hitherto U.S. influence. Consequently there have been calls for U.S. to counter increased Chinese involvement to safeguard U.S. influences and interests. This study aims to contribute to this debate by examining the extent to which increased Chinese involvement in Africa has, if any, supplanted U.S. strategic interests in the continent. The study contends that, Chinese involvement in Africa has entailed China creating own niche that does not necessary threaten U.S. interests in the continent as widely portrayed and imagined. This is premised on the fact that, U.S. has historically had relatively minimal strategic interests in Africa as compared to other more strategic parts of the world that China could significantly threaten. Seen in this way, increased Chinese penetration in Africa has not had immediate threats to U.S. core strategic interests, thus explaining U.S. measured response to counter Chinese presence in Africa.